ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР И КОНДИЦИОНЕР С ТАКИМ ВЕНТИЛЯТОРОМ

Настоящее изобретение относится к центробежному вентилятору, а также к содержащему его воздушному кондиционеру. Воздушный кондиционер, включающий в себя корпус и воздуходувный блок, который включает: корпус, чтобы направлять всасывание и испускание воздуха, центробежный вентилятор, расположенный внутри корпуса; электродвигатель и вал электродвигателя, при этом вентилятор включает в себя: основание, соединенное с валом электродвигателя; множество лопаток, отстоящих одна от другой в окружном направлении основания для направления воздуха, введенного в осевом направлении основания, по окружному направлению основания; входную кромку, выполненную на каждой из лопаток и расположенную вблизи вала электродвигателя; выходную кромку, выполненную на каждой из лопаток и обращенную в сторону внешнего окружного направления основания; и, по меньшей мере, одну первую лопатку, включенную в лопатки, причем входная кромка первой лопатки проходит на большем расстоянии от вала электродвигателя, чем входная кромка ...

ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР И КОНДИЦИОНЕР С ТАКИМ ВЕНТИЛЯТОРОМ

ВСАСЫВАЮЩЕЕ СОЕДИНЕНИЕ, ПРЕДНАЗНАЧЕННОЕ ДЛЯ СОЕДИНЕНИЯ ВСАСЫВАЮЩЕЙ ТРУБЫ С ЦЕНТРОБЕЖНЫМ НАСОСОМ, УСТАНОВЛЕННЫМ СУХИМ

... 1. Всасывающее соединение, предназначенное для соединения всасывающей трубы с центробежным насосом, установленным Сухим, содержащее первый фланец (10), который включает в себя центрально расположенное сквозное отверстие (11) и который выполнен с возможностью соединения с выходом всасывающей трубы, и второй фланец (12), который включает в себя центрально расположенное сквозное отверстие (13) и который выполнен с возможностью соединения с входом центробежного насоса, отличающееся тем, что всасывающее соединение содержит первую муфту (15) трубы, выполненную с возможностью перемещения в осевом направлении, видимом в направлении потока, между рабочим положением, в котором упомянутая первая муфта (15) трубы соединяет с возможностью разъединения первый фланец (10) и второй фланец (12), и, таким образом, приводит сквозное отверстие (11) первого фланца (10) в связь по текучей среде со сквозным отверстием (13) второго фланца (12), и положением обслуживания, в котором первая муфта (15) трубы расположена ...

Grubenluefter

Verdichterstufe eines Turboladers mit Strömungsverstärker

Ein Energierückgewinnungssystem und Verfahren sind für die Verdichterstufe eines Turboladers während Pumpvermeidungsbetrieb vorgesehen. Die Verdichterstufe weist ein Gehäuse, das einen Einlass definiert, eine Einlasskammer, einen Diffusor und ein Spiralgehäuse auf. Ein Strömungsverstärker ist in dem Verdichtergehäuse oder in einem getrennten Element vorgesehen. Falls. die Verdichterstufe nahe einer Pumpbedingung arbeitet, wird Ladeluft von einer Systemladeluftquelle zu dem Strömungsverstärker geleitet, der die Luft im Wesentlichen entlang der inneren umfänglichen Oberfläche der Einlasskammer in eine stromabwärtige Richtung in Bezug auf die Lufteinlassstromrichtung auslässt. Die Ladeluft wird in einer im Wesentlichen ringförmigen Art mit einer erhöhten Geschwindigkeit derart zugeführt, dass mindestens ein Teil des Einlassluftstroms von der Ladeluft mitgerissen wird, so dass die Geschwindigkeit der Luft zu dem Verdichterrad erhöht und Energie der Ladeluft zurückgewonnen wird.

Improvements in or relating to blowers

... 968,529. Centrifugal blowers. K. PRESTL. Oct. 12, 1962 [Oct. 12, 1961], No. 38802/62. Heading F1C. A motor-driven blower comprises an impeller arranged to rotate in a housing and to draw in axially and expel approximately tangentially through a discharge opening in the housing, which also has two suction openings in its axially opposite walls, and the impeller has three chambers lying next to one another axially, of which the middle one communicates with one of the two outer chambers through an opening in an intermediate wall; the impeller being located on the motor shaft by means of the other, closed intermediate wall. The blower shown comprises two plates f, k dividing the impeller into three compartments I, II, III, the impeller being secured to the motor shaft e at the plate f. Compartment III draws in air through port g in a side wall d of the casing, while compartments I and II draw in air through port h in the opposite side wall, plate k being apertured at l to permit entry to the ...

A cross-flow fan

A fan

Centrifugal fan assembly for road sweeping machines

A centrifugal fan assembly 19 for the debris collection arrangement of a road cleaning machine. In a first aspect the assembly comprises a casing 101, an impeller 103 and a wall 107. The casing comprises a volute potion 30 connected to an outlet passageway 31, a corner 106 being formed there between. The impeller comprises a plurality of blades 25 and is located in the volute portion proximate the corner. The wall separates the outlet passageway into first and second passageways 36, 37, and extends to an inner end 102 proximate the impeller. When a blade passes the inner end a second pressure wave is formed that destructively interferes with a first pressure formed by a blade passing the corner. In a second aspect the impeller comprises first and second plates mounted around a hub, and a plurality of blades extending between the plates. The spacing between each blade and a first adjacent blade is different from the spacing between the blade and a second opposing adjacent blade.

A fan

Improvements in or relating to machines for inducing flow of fluid for example pumpsand blowers

... 876,611. Mixing fluids. FIRTH CLEVELAND Ltd. July 2, 1957, No. 20871/57. Class 86 [Also in Groups VI, X, XI, XXVI, XXVIII and XXXIV] A mixer or emulsifier comprises a transverse-flow impeller 440 (see Group XXVI) which co-operates with a plate-like mem. ber 452 and rods 451 of elliptical section to set up a vortical flow having a vortex core V. The suction of the vortex core V draws a further fluid into the impeller from a tube 445 having an inlet valve 447. For example, air may be drawn in through the valve 447 to form an emulsion with liquid such as cream, flowing through the impeller 440. Specifications 757,543, 876,620 and 876,621 are referred to.

LUFTFOERDERMASCHINE, INSBESONDERE ZUR BELUEFTUNG VON SCHUTZRAEUMEN

INTERIOR UNIT AND AIR CONDITIONING SYSTEM

ANTI-INTOXICATION AND ANTI-EDDY STABILIZER

Centrifugal fan

Suction connection for connecting a suction pipe to a dry installed centrifugal pump

The invention relates to a suction connection, comprising a first flange (10) that includes a centrally located through hole (11) and is arranged to be connected to an outlet of a suction pipe and a second flange (12) that includes a centrally located through hole (13) and that is arranged to be connected to an inlet of a dry installed centrifugal pump. According to the invention the suction connection comprises a first pipe socket (15), which is displacable in the axial direction between an operative position in which said first pipe socket (15) disengageably connects the first flange (10) and the second flange (12) and thereby puts the through hole (11) of the first flange (10) in fluid communication with the through hole (13) of the second flange (12), and a service position in which said first pipe socket (15) is located at a distance from the second flange (12) and thereby admit access to the through hole (13) of the second flange (12).

Centrifugal fan and air conditioner having the same

An air blowing unit of an air conditioner includes a housing to guide suction and discharge of air, a centrifugal fan positioned inside the housing, and a motor to drive the centrifugal fan. The centrifugal fan includes a base coupled to a motor shaft coupled to the motor, a plurality of blades disposed spaced apart from each other in a circumferential direction of the base to guide air introduced in an axial direction of the base to the circumferential direction, a leading edge provided to the blades and arranged close to the motor shaft, a trailing edge provided to the blades and facing in an outer circumferential direction of the base, and at least one first blade of the blades, the leading edge of the first blade being shorter than the leading edge of the other blades.

Transverse fan with randomly varying J-shape tongue

SINGLE-STAGE, MULTIPLE OUTLET CENTRIFUGAL BLOWER

SINGLE-STAGE, MULTIPLE OUTLET CENTRIFUGAL BLOWER

SINGLE-STAGE, MULTIPLE OUTLET CENTRIFUGAL BLOWER The rotatable impeller of a single-stage centrifugal blower is housed in a casing one side of which comprises a spiral plenum having an opening which extends along a predetermined limited portion of the perimeter of the impeller and the other side of which includes a port located near the periphery of the impeller but displaced from the opening of the plenum so that it is out of register with that opening. The spiral plenum includes an exit section that provides a first fluid outlet from the casing, and the port serves as a second, independent fluid outlet.

Ventilator mit Spiralgehäuse.

Zentrifugalventilator mit Spiralgehäuse aus Blech.

Radialventilator, insbesondere für Ölbrenner

Air-delivery machine

Centrifugal compressor.

Radialverdichter (10), insbesondere Radialverdichter eines Abgasturboladers, mit einem rotierenden Laufrad (11); mit einem feststehenden Gehäuse (13); mit einem vom Gehäuse (13) definierten Hauptströmungskanal (17) zum Zuführen eines zu verdichtenden Mediums in Richtung auf das Laufrad (11); mit einer radial ausserhalb des Hauptströmungskanals (17) angeordneten Sekundärströmungskammer (18), welche durch eine Konturwand (19) vom Hauptströmungskanal (17) abgegrenzt ist und welche im Bereich des Laufrads (11) mit dem Hauptströmungskanal über einer Sekundärströmungsöffnung (21) verbunden ist; mit sich in der Sekundärströmungskammer (18) erstreckenden Streben (22), über welche die Konturwand (19) mit dem Gehäuse (13) verbunden ist. Die Streben (22) sind derart gekrümmt, dass sich im Meridianschnitt gesehen ein erster Anbindungsabschnitt (23) der jeweiligen Strebe (22) an der Konturwand (19) in Radialrichtung oder überwiegend in Radialrichtung und ein zweiter Anbindungsabschnitt (24) der jeweiligen ...

Air supply fan

DISCHARGE SECTION STRUCTURE FOR CENTRIFUGAL COMPRESSOR

Centrifugal Fan And Air Conditioner Having Same

An air blowing unit of an air conditioner includes a housing to guide suction and discharge of air, a centrifugal fan positioned inside the housing, and a motor to drive the centrifugal fan. The centrifugal fan includes a base coupled to a motor shaft coupled to the motor, a plurality of blades disposed spaced apart from each other in a circumferential direction of the base to guide air introduced in an axial direction of the base to the circumferential direction, a leading edge provided to the blades and arranged close to the motor shaft, a trailing edge provided to the blades and facing in an outer circumferential direction of the base, and at least one first blade of the blades, the leading edge of the first blade being shorter than the leading edge of the other blades.

IMPROVEMENTS TO CENTRIPETAL OR CENTRIFUGAL TURBOMACHINERY.

Centrifugal ventilation device for motor vehicle, has suction unit adjacent to opening of air outlet and extending perpendicular to direction of air flow exhaust via opening of air outlet

Dispositif de ventilation centrifuge (1) comportant une roue (3) pourvue de pales qui est apte à être entraînée en rotation à l'intérieur d'une enceinte (2) dont la paroi (6) est dotée, d'une part, d'une ouverture d'entrée d'air (7) ménagée sensiblement en regard de l'axe de rotation « X » de la roue (3), et d'autre part, une ouverture de sortie d'air (8) ménagée de manière sensiblement perpendiculaire et décalée par rapport audites axes de rotation « X » de la roue (3), caractérisé en ce que le dispositif de ventilation centrifuge (1) comporte des moyens d'aspiration (20) aptes à extraire une partie de l'air circulant à proximité d'une portion dite active (10) de la paroi (6), qui est adjacente à l'ouverture de sortie (8) et qui s'étend de manière sensiblement perpendiculaire à la direction d'échappement du flux d'air via ladite ouverture de sortie (8).

Improvements with the following flow of the fluids of the nonrectilinear trajectories

HOUSING AIR INLET AND HEATING, VENTILATION AND/OR BICYCLE HANDLEBARS CORRESPONDING

L'invention concerne un boîtier d'entrée d'air (1), notamment pour une installation de chauffage, ventilation et/ou climatisation de véhicule automobile, comprenant : - au moins une entrée d'air, - au moins une sortie d'air (21), - un groupe moto-ventilateur (3) comprenant une roue de ventilateur (7) apte à aspirer un flux d'air en provenance d'une entrée d'air, et - une volute (17) : • destinée à loger la roue de ventilateur (7) et • présentant un contour débutant par un nez de volute (19) et évoluant jusqu'à la sortie d'air (21), Selon l'invention, - le boîtier d'entrée d'air (1) comporte au moins un déflecteur (29) agencé pour dévier le flux d'air de façon à le diriger vers la sortie d'air (21), et - le déflecteur (29) s'étend au niveau du nez de volute, dans le prolongement d'une paroi de la volute (17) et de façon tangentielle à la roue de ventilateur (7).

원심팬

... 본 발명은 원심팬에 관한 것이다. 일 측면에 따른 원심팬은 공기를 흡입 또는 토출하기 위한 임펠러; 상기 임펠러를 회전시키기 위한 모터; 상기 임펠러를 수용하며, 상기 임펠러의 회전에 의해 공기가 흡입되는 흡입구 및 공기가 토출되는 토출구가 형성되는 하우징; 및 상기 토출구의 일측에 형성된 컷오프부를 포함하고, 상기 하우징 내부에서 유동되는 공기의 유동단면적은 상기 컷오프부로부터 상기 공기의 유동 방향을 따라 상기 토출구 측으로 갈수록 증가하고, 상기 임펠러의 저면부에서 상기 하우징의 내주면까지 상기 임펠러의 회전축방향으로의 거리는, 상기 컷오프부로부터 상기 공기의 유동 방향을 따라 상기 토출구 측으로 갈수록 적어도 일부분에서 증가한다.

Centrifugal fan

A centrifugal fan is disclosed. The centrifugal fan includes a fan device and a case. The fan device includes an impeller and a plurality of blades, wherein the plurality of blades is mounted apart around the impeller. The case is provided to allow the fan device to be disposed and rotated inside it. The case includes a top cover, a bottom cover and a side wall. The side wall is mounted between the top cover and the bottom cover. The side wall includes a fixed part and a deformable part. The fixed part is connected with the top cover and the bottom cover, and the deformable part is connected with the fixed part.

Conexion de succion para conectar un tubo de succion a una bomba centrifuga instalada en seco, que comprende una primera brida que incluye un agujero pasante, donde una conexion de succion comprende un primer manguito de tubo, el cual es desplazable en la direccion axial, visto en la direccion de flujo, entre una posicion operativa en la cual el primer manguito de tubo se conecta en forma desenganchable a la primera brida y la segunda brida.

Conexión de succión para conectar un tubo de succión a una bomba centrífuga instalada en seco, que comprende una primera brida que incluye un agujero pasante, donde una conexión de succión comprende un primer manguito de tubo, el cual es desplazable en la dirección axial, visto en la dirección de flujo, entre una posición operativa en la cual el primer manguito de tubo se conecta en forma desenganchable a la primera brida y la segunda brida.

CENTRIFUGAL FAN AND HEATING DEVICE PROVIDED THEREWITH

The present invention relates to a centrifugal fan comprising a fan housing with a radial outlet opening arranged in a radial peripheral wall thereof, a rotor arranged rotatably in the fan housing and provided close to an axial rotation axis thereof with a rotor inflow opening, wherein the fan housing is provided close to the rotation axis of the rotor with an axial inlet opening, and a tube part which extends in the fan housing from the radial outlet opening arranged in the radial peripheral wall and inward along the radial peripheral wall. The invention further relates to a heating device comprising a burner with a fuel mixture infeed opening, a centrifugal fan according to the invention, and wherein a fluid connection is provided between the fuel mixture infeed opening of the burner and the outlet opening of the centrifugal fan.

Centrifugal fan

A centrifugal blower unit comprising an impeller disposed therein and a scroll casing covering the exterior, the scroll casing having an outlet port, a tongue-like portion, a scroll portion of a volute shape and side casing plates provided with inlet ports on both sides, featuring advantages of increasing a static pressure and reducing an input power and noise while also achieving compactness in size. The scroll portion is provided with tapered scroll walls formed in anti-tongue-side wall adjacent to the outlet port by having it bent along bent lines toward the impeller and at angles to a driving shaft of the impeller such that a cross sectional area of the scroll portion in a direction of the driving shaft becomes gradually smaller toward the side casing plates.

Cutoff for fan or blower

A cutoff for a blower housing. The cutoff comprises a cutoff having an edge, the edge includes first and second ends and a midsection. The midsection includes an acoustical reduction section. Each end includes an efficiency enhancing portion curving from a first smaller radial dimension to a second greater radial dimension proximal the acoustical reduction section. The acoustical reduction section is located between the first and second ends and has a greater third radial dimension greater than the first or second radial dimensions.

Apparatus and method for efficiency and output capacity matching in a centrifugal fan

An efficiency matching device and method. The efficiency matching device is utilized in combination with a centrifugal fan adapted to deliver an air mass flow through an air delivery system. The fan has a housing that defines an inlet port and an exit port. The fan additionally has an impeller disposed within the housing. The impeller draws air into the inlet port, accelerates the air, and discharges the air through the exit port. The efficiency matching device is shiftably carried within the exit port for selectively varying the area of the exit port such that the efficiency of the centrifugal fan can be varied to match the output efficiency of the fan to the desired air mass flow through the air delivery system.

Centrifugal fluid machine

At a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating shaft 2 within a casing 1 and having a volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the leading edge of the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

VOLUTE FOR A CENTRIFUGAL COMPRESSOR

A volute for use in a centrifugal compressor that includes an impeller. The volute includes a housing defining a central aperture, an inlet channel, and a fluid collecting channel. The central aperture is adapted to receive the impeller such that the impeller discharges a fluid to the inlet channel. The inlet channel directs the flow to the collecting channel. A discharge portion is coupled to the housing and includes a discharge passage in fluid communication with the collecting channel to discharge the fluid. A tongue portion is disposed between the collecting channel and the discharge portion. The tongue is operable to separate the fluid into a first flow that flows through the collecting channel and a second flow that flows through the discharge passage.

Blower housing construction

A blower comprises a unit blower housing of molded plastic material having a circular outer wall and laterally spaced front and rear walls, defining an impeller chamber and a tangential outlet upon a first axis adapted to receive a flexible hose. The outlet defines with an end portion of the outer wall a reverse curved cut off edge extending between the side walls. An opening in the front wall is arranged upon a second axis at right angles to the first axis and receives an air inlet cone secured to the housing by a plurality of threaded inserts molded into the housing. An electric motor upon a support has a drive shaft extending through the rear wall. The rear wall is mounted upon and secured to the motor and an impeller is positioned within the housing and axially mounted upon the motor shaft and has an air intake receiving the air inlet cone. The second axis is so arranged relative to the first axis that the impeller defines with the cut off edge an optimum gap of reduced dimension for ...

CENTRIFUGAL FAN

A centrifugal fan includes a top cover plate, a bottom plate, a sidewall and an impeller. The sidewall is defined with an air outlet. The impeller includes a hub and a plurality of blades extending radially outwardly from the hub. An air passage channel is defined between outmost free ends of the blades and an inner surface of the sidewall. A tongue is provided near the air outlet and protrudes inwardly and laterally from the inner surface of the sidewall towards the outmost free ends of the blades. The tongue has an outer surface facing the outmost free ends of the blades. A plurality of grooves is defined in the outer surface along a lengthwise direction of the tongue.

TANGENTIAL FAN CUTOFF

ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР И НАГРЕВАТЕЛЬНОЕ УСТРОЙСТВО, СНАБЖЕННОЕ ТАКИМ ЦЕНТРОБЕЖНЫМ ВЕНТИЛЯТОРОМ

Изобретение относится к центробежному вентилятору, содержащему корпус вентилятора с радиальным выходным отверстием, которое выполнено в радиальной периферийной стенке корпуса вентилятора, ротор, с возможностью вращения расположенный в корпусе вентилятора и вблизи продольной оси вращения снабженный входным отверстием. Вблизи оси вращения ротора корпус вентилятора снабжен осевым входным отверстием и трубчатой частью, которая продолжается в корпусе вентилятора от радиального выходного отверстия, выполненного в радиальной периферийной стенке, и внутрь вдоль радиальной периферийной стенки. Изобретение дополнительно относится к нагревательному устройству, содержащему горелку и центробежный вентилятор, соответствующий изобретению. Изобретение направлено на снижение шума вентилятора, а также на снижение стоимости и трудозатрат при производстве такого вентилятора. 2 н. и 20 з.п. ф-лы, 9 ил.

ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР

Изобретение относится к области транспортного машиностроения. Центробежный вентилятор содержит корпус и крыльчатку, установленную в корпусе и выполненную с возможностью вращения вокруг заданной оси вращения. Корпус имеет осевое входное отверстие, в которое втягивается воздух, и тангенциальное выпускное отверстие, через которое выдувается воздух. Тангенциальное выпускное отверстие образовано первой кромкой, параллельной оси вращения и расположенной вблизи крыльчатки, второй кромкой, противоположной первой кромке и расположенной на расстоянии от крыльчатки, и двумя боковыми кромками, каждая из которых соединяет первую кромку со второй кромкой. Вентилятор также содержит выступающий участок, расположенный вблизи тангенциального выпускного отверстия, образованный первой кромкой и имеющий выпуклую поверхность внутри корпуса и переходную поверхность между выпуклой поверхностью и первой кромкой. Вентилятор дополнительно содержит выступ, проходящий вдоль каждой из боковых кромок к противоположной ...

НАГНЕТАТЕЛЬНЫЙ УЗЕЛ (ВАРИАНТЫ), ТРАНСПОРТНОЕ СРЕДСТВО И СПОСОБ ИЗМЕНЕНИЯ СКОРОСТИ ВОЗДУШНОГО ПОТОКА В НАГНЕТАТЕЛЬНОМ УЗЛЕ

КОРПУС С ВЕНТИЛЯТОРНЫМ ЭЛЕКТРОДВИГАТЕЛЕМ

... 1. Корпусной узел вентиляторного электродвигателя, содержащий вентиляторный электродвигатель, внутренний корпус, в котором установлен вентиляторный двигатель и выполнены выходные отверстия, наружный корпус, окружающий внутренний корпус, и каналы для прохода воздуха, выполненные в пространстве между внутренним и наружным корпусами и направляющие воздух, выпускаемый из выходных отверстий внутреннего корпуса, с обеспечением его перемещения вдоль по меньшей мере части наружной поверхности внутреннего корпуса и последующего выпуска за пределы наружного корпуса.2. Корпусной узел по п.1, в котором каналы для прохода воздуха образованы перегородками.3. Корпусной узел по п.2, в котором перегородки выполнены полностью на наружной поверхности внутреннего корпуса.4. Корпусной узел по п.1, в котором наружный корпус дополнительно содержит отверстие для впуска воздуха, выполненное на боковой поверхности его верхней части и сообщающееся с внутренним корпусом, и отверстие для выпуска воздуха, выполненное ...

ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР

... 1. Центробежный вентилятор, содержащий корпус (2) и крыльчатку (5), установленную в корпусе (2) и выполненную с возможностью вращения вокруг заданной оси (Х) вращения, причем корпус (2) имеет осевое входное отверстие, в которое втягивается воздух, и тангенциальное выпускное отверстие (7), через которое выдувается воздух, при этом тангенциальное выпускное отверстие (7) образовано первой кромкой (8), по существу, параллельной оси (Х) вращения и расположенной вблизи крыльчатки (5), второй кромкой (9), противоположной первой кромке (8) и расположенной на расстоянии от крыльчатки (5), и двумя боковыми кромками (10), каждая из которых соединяет первую кромку (8) со второй кромкой (9), отличающийся тем, что он также содержит выступающий участок (12), расположенный вблизи тангенциального выпускного отверстия (7), образованный первой кромкой (8) и имеющий выпуклую поверхность (16) внутри корпуса (2) и переходную поверхность (15) между выпуклой поверхностью (16) и первой кромкой (8).2. Вентилятор ...

Radialkompressor und Verfahren zum Herstellen eines Radialkompressors

Radialkompressor und Verfahren zum Herstellen eines Radialkompressors, wobei der Radialkompressor ein Kompressorgehäuse, eine drehbar in dem Kompressorgehäuse gelagerte Kompressorwellen, wenigstens ein in dem Kompressorgehäuse auf der Kompressorwelle angeordnetes Kompressorlaufrad und ein einem letzten Kompressorlaufrad des Radialkompressors in einem Fluidpfad im Kompressorgehäuse nachgelagertes Fluidausleitelement bestimmter Erstreckung in Radial- und Axialrichtung aufweist, wobei das Fluidausleitelement eine sich um ein bestimmtes Winkelmaß in einer Umfangsrichtung erstreckende Fluidpassage aufweist zum Ausleiten von über das letzte Kompressorlaufrad beschleunigtem Fluid aus dem Kompressorgehäuse und wobei das Fluidausleitelement von Material mit einer bestimmten Materialstruktur gebildet ist und die Fluidpassage als nachträglich eingebrachte räumliche Unterbrechung in einem Stoffzusammenhalt der Materialstruktur ausgebildet ist.

GYROSCOPE EXHAUST

RADIAL FLOW COMPRESSOR

CROSS-FLOW FAN

Sirocco fan and air conditioner

ANTI-NOISE AND ANTI-VORTEX FLOW SHARING DEVICE

A centrifugal fan (10) with improved efficiency and decreased noise, comprising a fan housing (12), in the form of a fan housing, with parallel sides (22, 23), which are fixed to opposite edges of a casing scroll (24), and a fan or impeller (25) with blades (27), positioned inside the fan housing (12), in such a way that it does or does not overlap the end of a inlet cone (26); a flow device element (20), shaped and produced in a single piece (20) or in more than one piece (28, 30), with at least one appendage facing the inlet cone (26), and if necessary overlapping the impeller (25) and extending for the width of the discharge opening (21), in such a way to allow homogenization of the flow delivered and reduction of vortices, which cause high noise and loss of efficiency of the centrifugal fan (10).

CENTRIFUGAL FAN AND HEATING DEVICE PROVIDED THEREWITH

Draught fan structure and air-conditioner

Ventilating fan

CENTRIFUGAL FAN HAS NOISE REDUCED FOR Ventilation system Of a MOTOR VEHICLE

Built-in box shaped ventilator duct - contains spiral shaoed extractor with central side discharge outlet

Motorized blower, for motor vehicle heater, has scroll casing with opening for motor housing directly supporting control module

L'invention concerne un groupe moto-ventilateur comportant un moteur, un capot support moteur avec logement moteur et rebord circulaire, un module de commande du moteur, une turbine cylindrique entraînée en rotation par le moteur autour d'un axe de rotation Δ, et un boîtier de volute (10) approximativement cylindrique logeant dans sa partie centrale la turbine et comportant un premier côté (10a) avec une ouverture circulaire (13) destinée à recevoir le capot support moteur, l'ouverture circulaire (13) étant sensiblement tangente à un nez de volute (11), un deuxième côté opposé au premier (10a) avec une ouverture d'admission d'air, et une paroi périphérique enveloppant la turbine (12) circonférentiellement avec un contour ayant un rayon croissant par rapport à l'axe de rotation A du moteur, la paroi périphérique débutant à sa partie de plus faible rayon par le nez de volute (11). L'ouverture circulaire (13) est centrée autour d'un axe A décalé par rapport à l'axe de rotation A du moteur ...

Air conditioner and Noise control method of the same

ELLIPTICAL VORTEX WALL FOR TRANSVERSE FANS

TURBO BLOWER APPARATUS HAVING INTEGRALLY COUPLED DISCHARGE PIPE

According to the present invention, a turbo blower apparatus comprises: a driving unit (10) taking in external air introduced through an inlet (4) formed in a hollow cabinet (1) to be blown and compressing the external air supplied from the inlet (4) to be discharged; a blower unit (11) connected to the driving unit (10); and a discharge pipe coupled to the blower unit (11) using a flange and fixated and coupled to an upper end of the cabinet (1). Accordingly, the present invention provides a stable structure, wherein pipes disposed in the discharge pipe and the outside of the cabinet to be connected through the additional flange while the discharge pipe connected to the blower disposed inside the turbo blower apparatus is integrally fixated to the cabinet as the exterior. COPYRIGHT KIPO 2016 ...

Wall assembly vortex and impeller for transverse fan

Ventilator

A ventilator includes a first casing, a second casing, a fan blade and a protrusion. The second casing is connected corresponding to the first casing and formed a fluid channel with the first casing. The fan blade is disposed between the first casing and the second casing. When the fan blade is rotated, the fluid channel is formed a fluid extrusion zone and a fluid decompression zone. The protrusion is disposed in the fluid channel and extended to the fluid decompression zone from adjacent an intersection line of the fluid extrusion zone and the fluid decompression zone. The invention can increase air pressure of the fan at the situation of the same noise.

Centrifugal fan and housing thereof

A centrifugal fan has a housing with an axially-defined air inlet and a laterally-defined air outlet. A first barricade is axially and outwardly extended from the periphery of the air inlet to prevent foreign matters entering the air inlet. A second barricade is axially and outwardly extended from a periphery of the air outlet to securely contact a baffle of a system so as to reduce the reflow of air from the air outlet.

CENTRIFUGAL BLOWER, AIR-BLOWING APPARATUS, AIR-CONDITIONING APPARATUS, AND REFRIGERATION CYCLE APPARATUS

RADIAL FAN AND A HIGH-PRESSURE CLEANING DEVICE HAVING A RADIAL FAN

The invention relates to a radial fan having a crucible-shaped impeller (10) and a housing (11) receiving the impeller (10), wherein the circumferential wall (18) of the housing, starting at a first circumferential wall region (19) arched in the manner of a pitch circle and extending directly along the impeller (10), on the one hand, in the direction of rotation of the impeller (10) has a second circumferential wall region (20), which has a radial distance to the impeller (10) that increases in a spiral-like manner up to an outlet region (21), and, on the other hand, has a third circumferential wall region (22) likewise extending up to the outlet region (21) counter to the direction of rotation of the impeller (10). Two side walls (25, 26) cover the axial fronts of the impeller, wherein a separating wall (28) disposed on one of the side walls engages in the crucible-shaped impeller (10), and partitions the interior thereof into a first (V1) and a second suction chamber (V2), wherein a suction ...

MOTOR FAN SYSTEM

The invention relates to a motor fan system comprising: a motor; a motor support cover with a motor housing and a circular flange; a motor control unit; a cylindrical turbine which is rotated by the motor around an axis of rotation Δ; and an essentially-cylindrical scroll casing (10) which houses the turbine in the central part thereof. The aforementioned casing comprises: a first side (10a) containing a circular opening (13) which is intended to receive the motor support cover and which is more or less tangent to a scroll nose piece (11); a second side which is disposed opposite the first (10a) and which is provided with an air inlet; and a peripheral wall which surrounds the turbine (12) in a circumferential manner with one contour thereof having a radius that increases in relation to the axis of rotation Δ of the motor, said peripheral wall beginning at the part thereof with the smallest radius at the scroll nose (11). The aforementioned circular opening (13) is centred around an axis ...

Blower

This invention is designed to reduce a harsh noise, by suppressing a wind noise generated at a wind-receiving end, which is caused by forming the wind-receiving end of an outlet port for air so as to be parallel to a side extending along the direction of the rotation axis of a vane of an impeller. For the purpose of reducing the harsh noise, the wind-receiving end (1d1) of the outlet port (1d) is provided in the form of steps or with inclination with respect to a side (3a1) extending along the direction of the rotation axis of a vane (3a) of the impeller (3) so that the wind sent and blown out by the vanes (3a) of the impeller (3) is prevented from blowing against the wind-receiving end (1d1) all at once throughout its entire width.

AIR DUCT ASSEMBLYS, AND FAN HEATERS

Disclosed are an air duct assembly and a fan heater applying in the air duct assembly, which includes a volute tongue positioned in the volute forms an air duct with the volute. The air duct is configured with an air inlet and an air outlet. A cross-flow wind turbine positioned in the air duct introduce the airflow into the air duct from the air inlet, and blow out the airflow in the air duct through the air outlet. The volute includes a first volute tongue member, the size of the angle between the line connecting the root portion M of the first volute tongue member to the axis O of the cross-flow wind turbine and the line connecting the root portion N of the second volute tongue member to the axis O of the cross-flow wind turbine on the same cross-section is from 110° to 170°.

COMPRESSOR

A compressor comprises a housing defining an inlet, a volute, an outlet, and a compressor chamber between the inlet and the outlet within which a compressor wheel is rotatably mounted. The housing has discrete attached first and second housing portions, the first housing portion defining at least part of the inlet and the second housing portion defining at least part of a volute of the outlet. The first housing portion has a conductive element for conducting an electric signal and a second sensor arrangement in sensing communication with the inlet. The compressor further comprises a first sensor arrangement, the first sensor arrangement being configured such that it is in sensing communication with the volute or outlet and such that it is electrically connected to the conductive element.

CENTRIFUGAL FAN

A centrifugal fan includes: an impeller configured to suction or discharge air; a motor configured to rotate the impeller; a housing configured to accommodate the impeller and have a suction port through which air is suctioned by rotation of the impeller and a discharge port through which air is discharged by rotation of the impeller; and a cut-off portion formed on one side of the discharge port. A flow cross-sectional area of air flowing in the housing is gradually increased from the cut-off portion to the discharge port in an air flow direction, and a distance from a lower portion of the impeller to an inner peripheral surface of the housing in a rotational axis direction of the impeller is gradually increased in at least a portion from the cut-off portion to the discharge port in the air flow direction.

Airfoils and Machines Incorporating Airfoils

Various embodiments of an airfoil and machines with airfoils are disclosed. The airfoils include a thicker leading airfoil portion and a thinner trailing airfoil portion. In one embodiment, the leading airfoil portion is formed by bending a body of the airfoil back toward itself. In another embodiment, the leading airfoil portion has a solid geometry and includes two elliptic surfaces. To prevent detachment of airflow, the leading airfoil portion includes at least two arc portions or surfaces that act to direct the airflow down to the trailing airfoil portion in a manner that stabilizes vortexes that may form in the region of changing thickness.

Blower

SUCTION DEVICE WITH SOUND MIRROR DEVICE

A suction device is provided which includes a fan device for generating a suction air flow and an air conveying device having at least one flow deflection element comprising an inlet tube and an outlet tube, wherein the outlet tube is oriented transversely to the inlet tube, and wherein in a transitional area between the inlet tube and the outlet tube there is arranged a sound mirror device, which at least one of (i) reflects and (ii) absorbs sound.

Centrifugal compressor and turbocharger

A diffuser includes a ring-shaped parallel part, and a ring-shaped throttling part formed continuously to the inside of the parallel part in a radial direction. A wall surface of the throttling part includes a flow passage area minimum portion which makes minimal a flow passage area of the diffuser, and a ring-shaped protruding portion located closer to the outlet side of the compressor wheel than the flow passage area minimum portion, and protruding toward the flow passage of the diffuser.

Centrifugal blower

It is intended to provide a centrifugal blower capable of suppressing the generation of noise including periodic noise that is caused by interference between a tongue and an impeller. The centrifugal blower is provided with an impeller (2) provided with plural blades around a rotating shaft; a casing (3) which houses the impeller (2) and has a suction portion at one end in an axial line direction of the rotating shaft; a spiral flow passage (4) formed around the impeller (2) in the casing (3); and a tongue (6) for suppressing inflow of air from a winding end to a winding origin of the spiral flow passage (4). The centrifugal blower is characterized in that an extension (20) is provided at a tip of the tongue (6) in a reverse rotational direction that is reverse to a rotational direction of the impeller (2) in such a manner that it projects in the reverse rotational direction by a length that varies depending on the position in the axial line direction and that the gap between itself and ...

CONVECTION OVEN

Ovens and methods for preparing food. An oven includes a cabinet and an oven chamber in the cabinet. A fan is provided for moving gas in the oven. The oven can include a fan scroll housing having multiple fan discharge ducts defining respective gas flow paths from the fan. The oven can include a turning vane configured for turning gas flow and for heating the gas flow.

Airfoils and Machines Incorporating Airfoils

Various embodiments of an airfoil and machines with airfoils are disclosed. The airfoils include a thicker leading airfoil portion and a thinner trailing airfoil portion. In one embodiment, the leading airfoil portion is formed by bending a body of the airfoil back toward itself. In another embodiment, the leading airfoil portion has a solid geometry and includes two elliptic surfaces. To prevent detachment of airflow, the leading airfoil portion includes at least two arc portions or surfaces that act to direct the airflow down to the trailing airfoil portion in a manner that stabilizes vortexes that may form in the region of changing thickness.

空調室内機

РАДИАЛЬНЫЙ ВЕНТИЛЯТОР

Изобретение относится к вентиляционному устройству, а более конкретно к усовершенствованному радиальному вентилятору. Радиальный вентилятор с одинарным или сдвоенным заборным устройством предусмотрен с крыльчаткой вентилятора закрытого типа, которая образована из вращающегося лопастного колеса (10), имеющего, по меньшей мере, покрывающий элемент (13). Лопасти (11) крыльчатки вентилятора являются плоскими и наклонены назад относительно направления вращения крыльчатки вентилятора, а покрывающий элемент (13) содержит вдоль направления потока участок (13А) поверхности усеченного конуса, первый криволинейный участок (13В) поверхности и второй криволинейный участок (13С) поверхности, причем радиус кривизны первого криволинейного участка поверхности меньше радиуса кривизны второго криволинейного участка поверхности. Изобретение обеспечивает увеличение к.п.д. радиальных вентиляторов благодаря использованию оптимальной комбинации параметров, например числа, формы и расположения лопастей крыльчатки ...

ВСАСЫВАЮЩЕЕ СОЕДИНЕНИЕ, ПРЕДНАЗНАЧЕННОЕ ДЛЯ СОЕДИНЕНИЯ ВСАСЫВАЮЩЕЙ ТРУБЫ С ЦЕНТРОБЕЖНЫМ НАСОСОМ, УСТАНОВЛЕННЫМ СУХИМ

Изобретение относится к машиностроению и может быть использовано для откачивания насосом использованной или сточной воды. Всасывающее соединение предназначено для соединения всасывающей трубы с центробежным насосом, установленным сухим, содержащее первый и второй фланцы. Первый фланец включает в себя центрально расположенное сквозное отверстие и выполнен с возможностью соединения с выходом всасывающей трубы. Второй фланец включает в себя центрально расположенное сквозное отверстие и выполнен с возможностью соединения с входом центробежного насоса. Всасывающее соединение содержит первую муфту трубы, выполненную с возможностью перемещения в осевом направлении, видимом в направлении потока, между рабочим положением, в котором упомянутая первая муфта трубы соединяет с возможностью разъединения первый фланец и второй фланец, и, таким образом, приводит сквозное отверстие первого фланца в связь по текучей среде со сквозным отверстием второго фланца, и положением обслуживания, в котором первая ...

НАГНЕТАТЕЛЬНЫЙ УЗЕЛ (ВАРИАНТЫ), ТРАНСПОРТНОЕ СРЕДСТВО И СПОСОБ ИЗМЕНЕНИЯ СКОРОСТИ ВОЗДУШНОГО ПОТОКА В НАГНЕТАТЕЛЬНОМ УЗЛЕ

Изобретение относится к системе обогрева, вентиляции и кондиционирования воздуха. Нагнетательный узел содержит корпус, имеющий стенку в форме «улитки», электродвигатель, имеющий выходной вал, продолжающийся в корпусе, лопастное колесо, расположенное в корпусе и установленное на выходном валу, для создания воздушного потока вдоль тракта воздушного потока в корпусе, выпуск воздушного потока и отсекатель. Отсекатель может поворачиваться вокруг своей центральной или центровой оси и образует, по существу, непрерывную поверхность со стенкой в форме «улитки» и с выпуском воздушного потока вдоль тракта воздушного потока в первом положении, и образует воздушный зазор. Нагнетательный узел также содержит исполнительный механизм для поворота отсекателя из первого положения во второе положение, в котором воздушный зазор увеличен для уменьшения воздушного потока. Достигается упрощение конструкции и уменьшение турбулентности, шума и вибрации. 4 н. и 14 з.п. ф-лы, 3 ил.

НАГНЕТАТЕЛЬНЫЙ УЗЕЛ (ВАРИАНТЫ), ТРАНСПОРТНОЕ СРЕДСТВО, СОДЕРЖАЩЕЕ ТАКОЙ УЗЕЛ, И СПОСОБ ИЗМЕНЕНИЯ СКОРОСТИ ВОЗДУШНОГО ПОТОКА В НАГНЕТАТЕЛЬНОМ УЗЛЕ

Изобретение относится к системе вентиляции и кондиционирования транспортных средств. Нагнетательный узел содержит корпус, имеющий стенку в форме «улитки», электродвигатель, содержащий выпускной вал, продолжающийся в корпусе, лопастное колесо, расположенное в корпусе и установленное на выпускном валу, для создания воздушного потока вдоль пути воздушного потока в корпусе, выпуск воздушного потока и отсекатель улитки. Отсекатель улитки является мембраной, расположенной между стенкой в форме «улитки» и выпуском воздушного потока, и образует по существу непрерывную поверхность со стенкой в форме «улитки» и с выпуском воздушного потока вдоль пути воздушного потока. В первом положении мембрана по существу натянута, а во втором положении мембрана ослаблена. В качестве альтернативы, мембрана является надуваемой посредством клапана в сообщении по текучей среде с мембраной. Достигается уменьшение шума и вибрации. 4 н. и 14 з.п. ф-лы, 4 ил.

Kreiselaggregat für Fluide

Radialgebläse

Radialgebläse

Radialgebläse (1) mit einem ein Seitenteil (2) und ein topfartiges Gehäuseteil (3) aufweisenden Gehäuse (4), einem darin angeordnetem Lüfterrad (5) mit sich radial erstreckenden Schaufeln (6), einem am Seitenteil angeordneten Elektromotor (7) und mit einem von Gehäuseteil und Seitenteil gebildeten Druckraum (8), der mit dem Lüfterrad-Raum zwischen den Schaufeln (6) im Querschnitt eine Düse (8') nach Art einer Venturi-Düse bildet, und das Verhältnis größte Schaufelhöhe (H)/größter Durchmesser (D) der Spirale im wesentlichen zwischen H/D = 0,08 und H/D = 0,3 beträgt.

Gebläseanordnung für ein Fahrzeug

Eine Gebläseanordnung umfasst ein Gehäuse mit einer Spiralwand, einen Motor mit einer Ausgangswelle, die sich innerhalb des Gehäuses erstreckt, ein Laufrad, das innerhalb des Gehäuses positioniert und an der Ausgangswelle befestigt ist, zum Erzeugen eines Luftstroms entlang eines Luftstromwegs innerhalb des Gehäuses, einen Luftstromauslass und einen Spiralenabschluss. Der Spiralenabschluss kann um seinen Mittelpunkt oder seine Mittelachse drehen und bildet mit der Spiralwand und mit dem Luftstromauslass entlang des Luftstromwegs in einer ersten Stellung eine im Wesentlichen durchgängige Fläche und definiert einen Luftspalt. Die Gebläseanordnung umfasst des Weiteren einen Aktuator zum Drehen des Spiralenabschlusses aus der ersten Stellung in eine zweite Stellung, wobei der Luftspalt zum Reduzieren des Luftstroms vergrößert wird.

Verdichter eines Abgasturboladers

Die vorliegende Erfindung betrifft einen Verdichter (1) eines Abgasturboladers mit einem Verdichtergehäuse (2), das einen Verdichter-Auslassstutzen (3) aufweist, und mit einem Schalldämpfer (4), dadurch gekennzeichnet, dass der Schalldämpfer (4) als separates Bauteil ausgebildet ist, das mit dem Auslassstutzen (3) verbindbar ist.

Compressor with sensor

A compressor comprises a housing 7 defining an inlet11, a volute 12, an outlet 25, and a compressor chamber between the inlet and the outlet within which a compressor wheel 6 is rotatably mounted. The housing has discrete attached first and second housing portions 30, 32, the first housing portion defining at least part of the inlet, and the second housing portion defining at least part of the volute. The first housing portion has a conductive element 42 for conducting an electric signal. The compressor further comprises a first sensor 38 which is in sensing communication with the volute or outlet and/or such that it is electrically connected to the conductive element. A second sensor 36 may be in sensing communication with the inlet, and may also be electrically connected to the conductive element. The first and second sensors may each comprise at least one of a pressure, temperature or mass flow sensor.

Improvements in and relating to centrifugal fans

... 479,823. Centrifugal fans. BRITISH THOMSON-HOUSTON CO., Ltd. June 1, 1937, No. 15224. Convention date, June 1, 1936. [Class 110 (i)] To reduce the noise of operation of a centrifugal fan with blades extending axially from the hub, sound-deadening material 32, Fig. 4, is located at the outlet in the space between the casing 20 and a perforated cut-off 29. The cut-off consists of a plate 30 extending partly around the impeller within the casing and doubled back to join the outlet edge of the casing parallel to the impeller axis. The blades 34, Fig. 5, are secured to a shroud ring 35 and extend partly through a curved orifice 27 secured to the inlet and extending to the shroud ring. The radial distance R between the outer edges of opposed blades at the shround ring 35 is 1À33 times the distance r at the hub ring 36 ; and the spacing A between the front wall 41 and the front end 42 of the discharge side 43 of the blades is 1À65 times the spacing B between the rear end 44 and the rear wall 45 ...

CENTRIFUGAL BLOWER

AIR HOISTING ENGINE, IN PARTICULAR FOR THE VENTILATION OF SHELTER

HOUSING FOR A RADIAL FLOW COMPRESSOR.

AIR HOISTING ENGINE, IN PARTICULAR FOR THE VENTILATION OF SHELTER

Suction connection for connecting a suction pipe to a dry installed centrifugal pump

The invention relates to a suction connection, comprising a first flange (10) that includes a centrally located through hole (11) and is arranged to be connected to an outlet of a suction pipe and a second flange (12) that includes a centrally located through hole (13) and that is arranged to be connected to an inlet of a dry installed centrifugal pump. According to the invention the suction connection comprises a first pipe socket (15), which is displacable in the axial direction between an operative position in which said first pipe socket (15) disengageably connects the first flange (10) and the second flange (12) and thereby puts the through hole (11) of the first flange (10) in fluid communication with the through hole (13) of the second flange (12), and a service position in which said first pipe socket (15) is located at a distance from the second flange (12) and thereby admit access to the through hole (13) of the second flange (12).

Вентиляторный блок воздухонагнетателя

1. Блок воздухонагнетателя для системы обогрева, вентиляции и кондиционирования воздуха, который содержит кожух с установленным в нем мотором, первый вентилятор и второй вентилятор, функционально соединенные с мотором и выровненные по одной оси относительно друг друга таким образом, чтобы втягивать воздух из первого впускного отверстия и второго впускного отверстия соответственно, а также выпускное отверстие, в которое поступает воздух от первого вентилятора и второго вентилятора и которое направляет воздух в пассажирский салон.2. Блок воздухонагнетателя по п.1, который содержит вал, приводимый в действие мотором и проходящий от первого и второго противоположных концов мотора, где первый вентилятор соединен с первым концом вала, а второй вентилятор соединен со вторым концом вала.3. Блок воздухонагнетателя по п.2, в котором кожух также имеет первое впускное отверстие, через которое первый вентилятор втягивает воздух в кожух, и второе впускное отверстие, через которое второй вентилятор втягивает воздух в кожух.4. Блок воздухонагнетателя по п.3, в котором первый вентилятор выполнен с возможностью втягивать рециркуляционный воздух из пассажирского салона и воздух снаружи от пассажирского салона.5. Блок воздухонагнетателя по п.1, в котором первый вентилятор выполнен с возможностью втягивать рециркуляционный воздух из пассажирского салона и воздух снаружи от пассажирского салона.6. Блок воздухонагнетателя по п.1, в котором второй вентилятор выполнен с возможностью втягивать рециркуляционный воздух из пассажирского салона и воздух снаружи пассажирского салона.7. Блок воздухонагнетателя по п.1, в котором первый в РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 142 830 U1 (51) МПК B60H 1/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014106120/11, 19.02.2014 (24) Дата начала отсчета срока действия патента: 19.02.2014 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): МЭРАНВИЛЛ Клэй ...

Compact scroll fan assembly

A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.

Blower fan

A blower fan includes a housing arranged to accommodate an impeller, wherein an upper surface portion of the housing includes a motor fixing portion, a peripheral portion, and a plurality of ribs interconnecting the motor fixing portion and the peripheral portion, the upper surface portion including a plurality of air intake ports defined between the motor fixing portion, the peripheral portion and the plurality of ribs being arranged to oppose the impeller; and the peripheral portion includes a peripheral low portion arranged to surround or substantially surround outer peripheries of the air intake ports and positioned lower than upper surfaces of the plurality of ribs and a peripheral high portion provided with rib extension portions continuously extending from the plurality of ribs and positioned higher than an upper surface of the peripheral low portion.

Centrifugal fan and projector

A centrifugal fan introducing air via an inlet port in a direction of a rotation axis and discharging the air via an outlet port in the a direction of a centrifugal force produced by rotation includes: an impeller having a plurality of vanes around the rotation axis; and a housing including the inlet port and supporting the impeller such that the impeller is allowed to freely rotate in the housing. An inclined portion is formed at least at a part of edge portion of the inlet port, the inclined portion widening to the side that the impeller is disposed.

Ventilating fan

A ventilating fan includes a sirocco fan disposed in a box-shaped body and an adapter connected to an air outlet of the sirocco fan. The sirocco fan is composed of two opposite scroll plates with scroll shapes and a casing plate sandwiched between the two scroll plates. An overall air inlet of the sirocco fan is disposed on the first scroll plate and a central line of the air outlet of the adapter is offset towards the second scroll plate. The present invention is advantageous in that no turbulence is generated at the adapter and the wind amount of the ventilating fan is thus ensured and noise is reduced. Therefore, the present invention can provide a small air blowing device with high efficiency and improve stability of performance of the product.

MULTIBLADE CENTRIFUGAL FAN AND AIR CONDITIONER EQUIPPED WITH THE SAME

Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section. 1. A multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction ,wherein at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in a rotation-axis direction such that an extended height thereof gradually increases in the rotational direction from a scroll start position of the scroll casing, andwherein at least one stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.2. The multiblade centrifugal fan according to claim 1 , wherein the lower end surface opposite the upper end surface that is provided with an inlet in the scroll casing serves as the inclined end surface that is extended in the rotation-axis direction such that the extended height thereof gradually increases in the rotational direction claim ...

Electric blower and vacuum cleaner comprising same

Disclosed is an electric blower having a stator, a rotor, a bracket, a rotary fan, an air guide and a fan case. The air guide comprises a partition plate, a diffuser disposed around outer periphery of the rotary fan in the air guide, a partition-plate sloped portion and a guide vane. The fan case has a fan-facing portion, a fan case shoulder bent at the outermost part of the fan-facing portion, and a cylindrical portion extending cylindrically in an axial direction from the fan case shoulder. The fan case shoulder is so bent that it forms substantially a right angle.

Centrifugal fan

A centrifugal fan may include an impeller arranged to rotate about a rotation axis, an impeller case arranged to accommodate the impeller, a motor arranged to rotate the impeller, and a motor case arranged to accommodate the motor. The impeller may include a boss portion joined to a shaft arranged to rotate about the rotation axis, a hub arranged to extend radially outward from the boss portion, and a plurality of blades. Each blade may be arranged to extend radially outward. An inner wall of the impeller case may include an inside surface extending radially outward along an upper end portion of each blade. A side end portion of an air inlet defined in a central portion of the impeller case may include a curved surface projecting radially inward.

Centrifugal fan and fan with sound-muffling box having the centrifugal fan built-in

A centrifugal fan includes a casing side plate with a casing inlet, a spiral scroll, a tongue, a casing outlet, a main plate, a retaining ring, multiple blades arranged between the main plate and the retaining ring, and an air-intake space surrounded by the blades. The centrifugal fan further includes an airflow accelerator in the air-intake space for increasing an airflow speed of a gas toward the blades.

Fan

A fan for generating an air current includes a body having an air inlet, and a nozzle connected to the body. The nozzle includes an interior passage for receiving an air flow from the body and an air outlet from which the air flow is emitted from the fan. The interior passage extends about an opening or bore through which air from outside the nozzle is drawn by air emitted from the air outlet. The body includes a duct having an air inlet and an air outlet, an impeller located within the duct for drawing the air flow through the duct, and a motor for driving the impeller. A noise suppression cavity is located beneath the air inlet of the duct. The cavity has an inlet which is located beneath, and is preferably concentric with, the air inlet of the duct.

STEPPED PARTING JOINT ON A TRANSMISSION HOUSING OF A FLUID MACHINE

A divisible housing of a fluid machine for a transmission to be received in the divisible housing is provided. The transmission provided for receiving in the divisible housing includes a large wheel and at least two pinion shafts which are in engagement with the large wheel. The divisible housing includes a first housing element and a second housing element which is connected to the first housing element via a parting joint. The at least two pinion shafts may be received in the parting joint. The parting joint includes a parting joint step, the at least two pinion shafts being receivable in the parting joint on both sides of the parting joint step. 110-. (canceled)11. A divisible housing of a fluid machine for a transmission receivable in the divisible housing and having a large wheel and at least two pinion shafts which are in engagement with the large wheel , the divisible housing comprising:a first housing element; anda second housing element connected to the first housing element via a parting joint,wherein the at least two pinion shafts being receivable in the parting joint,wherein the parting joint includes a parting joint jump, which forms two different horizontal levels in the parting joint, andwherein the at least two pinion shafts are receivable in the parting joint on both sides of the parting joint jump at the two different horizontal levels.12. The divisible housing of a fluid machine as claimed in claim 11 ,wherein the first housing element and the second housing element each include a step corresponding to one another and forming the parting joint jump.13. The divisible housing of a fluid machine as claimed in claim 11 ,wherein the transmission is received in the divisible housing, the at least two pinion shafts being received in the parting joint on both sides of the parting joint jump.14. The divisible housing of a fluid machine as claimed in claim 13 , wherein one axis of rotation of two axes of rotation of the at least two pinion shafts is ...

Celing mounted ventilation fan with illumination

The ceiling mounted ventilation fan with illumination employs a configuration in which a second opening for guiding light from an illumination unit into the room is formed in a lower part of a main housing and in which a air inlet on a fan casing of a fan unit is provided so as to open toward upper part of the main housing. Thus the air inlet of the fan unit opens in a direction opposite to the second opening communicating with inside of the room. As a result, sounds such as operation noises from the fan unit that are transmitted to outside of the fan unit chiefly through the air inlet can be made to resist being transmitted through the second opening into the room, so that the noises can be reduced.

CENTRIFUGAL BLOWING FAN

A centrifugal blowing fan includes a back yoke made from metal, having a substantially bottomed cylindrical portion around a rotating shaft of a motor, an inner surface attached with a magnet of the motor mounted thereon and a flange portion disposed around a periphery of an opening of the cylindrical portion; and a cylindrical impeller made from resin, having a plurality of blades circumferentially arranged, an annular collar portion joined with first ends of the plurality of blades and a doughnut-shaped disk portion joined with second ends of the plurality of blades, wherein the disk portion has at least one fitting, and the flange portion has at least one fitted space receiving the at least one fitting so as to concentrically and fixedly connect the impeller and the back yoke. 1. A centrifugal blowing fan for radially exhausting air axially taken therein , the centrifugal blowing fan comprising:a back yoke made from metal, the back yoke having a substantially bottomed cylindrical portion around a rotating shaft of a motor, an inner surface attached with a magnet of the motor mounted thereon and a flange portion disposed around a periphery of an opening of the cylindrical portion, and the back yoke rotating integrally with the rotating shaft; anda cylindrical impeller made from resin, the impeller having a plurality of blades circumferentially arranged, an annular collar portion joined with first ends of the plurality of blades and a doughnut-shaped disk portion joined with second ends of the plurality of blades,wherein the cylindrical portion of the back yoke has an outer diameter smaller than an inner diameter of the impeller, and the flange portion has an outer diameter substantially same to or slightly larger than an outer diameter of the disk portion of the impeller, andwherein the disk portion of the impeller has at least one fitting, and the flange portion of the back yoke has at least one fitted space receiving the at least one fitting so as to ...

CENTRIFUGAL BLOWER AND VEHICLE AIR CONDITIONER PROVIDED WITH THE SAME

A centrifugal blower includes a centrifugal fan; an electric motor that rotationally drives the centrifugal fan; a fan case that has an air inlet and an air outlet and that internally accommodates the centrifugal fan; and an electric motor case () that has a cylinder () accommodating the electric motor and a flange portion () extending radially outward from the cylinder () and that is fitted to the fan case. The flange portion () is provided with a ring-shaped rib portion () that protrudes from the flange portion (); the ring-shaped rib portion () is provided with a plurality of slits (and ) that extend from the flange portion () in the axial direction of the cylinder (); and the flange portion () between the ring-shaped rib portion () and the cylinder () is inclined in a circumferential direction toward the slits (and ). 1. A centrifugal blower comprising:a centrifugal fan;an electric motor that rotationally drives the centrifugal fan;a fan case that has an air inlet and an air outlet and that internally accommodates the centrifugal fan; andan electric motor case that has a cylinder accommodating the electric motor and a flange portion extending radially outward from the cylinder and that is fitted to the fan case,wherein the flange portion is provided with, in a concentric manner with the cylinder, a ring-shaped rib portion that protrudes from the flange portion;the ring-shaped rib portion is provided with a slit that extends from the flange portion in the axial direction of the cylinder; andthe flange portion between the ring-shaped rib portion and the cylinder is inclined in a circumferential direction toward the slit.2. A centrifugal blower according to claim 1 , wherein an extension end portion of the ring-shaped rib portion is inclined downward from an outer circumference of the extension end portion toward an inner circumference thereof.3. A centrifugal blower according to claim 1 , wherein a predetermined space is formed between the extension end portion of ...

Extended Length Cutoff Blower

A blower assembly including a blower housing having a side wall with a first portion extending from the initial cutoff through an angle of at least 45° or more, the first portion having a radius which is substantially constant or which increases at a relatively small rate. The side wall additionally includes a second portion, extending from the end of the first portion to the outlet, which forms a continuous curve with the first portion and has an increasing radius which is increasing at a larger rate and has a rate of increase that is also increasing with housing angle. The shape of the side wall allows a reduction in the overall size of the blower housing for a given size of impeller. 2. The blower assembly of claim 1 , further comprising:the air inlet opening being circular and having an inner diameter dimension that is smaller than an inner diameter dimension of the plurality of blades surrounding the impeller interior.3. The blower assembly of claim 1 , further comprising:the impeller having an axial width dimension that is smaller than an exterior diameter dimension of the impeller.4. The blower assembly of claim 1 , further comprising:the point on the side wall being spaced in the rotation direction from the cutoff by an arc of at most 120°.5. The blower assembly of claim 4 , further comprising:the radial distance of the side wall from the axis of rotation increasing at the rate as the side wall extends in the rotation direction from the point on the side wall through an arc of at least 180°.7. The blower assembly of claim 6 , further comprising:the air inlet opening being circular and having an inner diameter dimension that is smaller than an inner diameter dimension of the plurality of blades surrounding the impeller interior.8. The blower assembly of claim 7 , further comprising:the impeller having an axial width dimension that is smaller than an exterior diameter dimension of the impeller.9. The blower assembly of claim 6 , further comprising:the motor ...

ELECTRONIC DEVICE

A centrifugal fan includes a housing and a fan body. The housing includes an upper cover and a lower cover. The fan body is disposed in the housing and includes a hub and at least a blade. The hub is pivotally connected to the lower cover. The blade includes an air intake portion and an air exhaust portion. The air intake portion is connected to the peripheral edge of the hub. The air exhaust portion is connected to the air intake portion and is disposed between the upper cover and the lower cover. The width of the air exhaust portion is gradually reduced along a direction away from the air intake portion. 1. A centrifugal fan , comprising:a casing including a upper cover and a lower cover; and a fan hub pivotally connected to the lower cover; and', 'a fan blade, wherein the fan blade includes an air intake portion and an air exhaust portion, the air intake portion is connected to an outer edge of the fan hub, the air exhaust portion is connected to the air intake portion and disposed between the upper cover and the lower cover, and the width of the air exhaust portion is reduced along a direction away from the air intake portion., 'a fan body disposed in the casing, wherein the fan body includes2. The centrifugal fan according to claim 1 , wherein a cross section of the air exhaust portion vertical to the upper cover and the lower cover includes an upper contour line and a lower contour line claim 1 , the upper contour line includes a upper close point relative to the upper cover claim 1 , and the lower contour line includes a lower close point relative to the lower cover.3. The centrifugal fan according to claim 2 , wherein the vertical distance from the upper contour line to the upper cover is increased along a direction away from the upper close point claim 2 , and the vertical distance of the lower contour line relative to the lower cover is increased along a direction away from the lower close point.4. The centrifugal fan according to claim 3 , wherein the ...

Centrifugal Fan

A centrifugal fan includes a fan frame, a motor, an impeller and an axial positioning member. The fan frame includes a base plate portion, a cover plate portion, and a lateral wall portion arranged between the base plate portion and the cover plate portion. The cover plate portion includes an air inlet, and the lateral wall portion includes an air outlet. The motor is received in the fan frame. The impeller is rotatably coupled with the motor. The axial positioning member is arranged along a path surrounding the air inlet of the fan frame. The axial positioning member includes a coupling face and an abutting face opposite to the coupling face. The coupling face is coupled with the cover plate portion of the fan frame. The abutting face is spaced from the coupling face. 1. A centrifugal fan comprising:a fan frame comprising a base plate portion, a cover plate portion, and a lateral wall portion arranged between the base plate portion and the cover plate portion, wherein the cover plate portion comprises an air inlet, and wherein the lateral wall portion comprises an air outlet;a motor received in the fan frame;an impeller rotatably coupled with the motor; andat least one axial positioning member arranged along a path surrounding the air inlet of the fan frame, wherein each of the at least one axial positioning member comprises a coupling face and an abutting face opposite to the coupling face, wherein the coupling face is coupled with the cover plate portion of the fan frame, and wherein the abutting face is spaced from the coupling face.2. The centrifugal fan as claimed in claim 1 , wherein the fan frame has a first height in an axial direction of the fan frame claim 1 , wherein each of the at least one axial positioning member has a second height in the axial direction of the fan frame claim 1 , and wherein the second height is 20% to 80% of the first height.3. The centrifugal fan as claimed in claim 2 , wherein the second height is 40% to 60% of the first height.4 ...

BLOWER ASSEMBLY FOR ELECTRONIC DEVICE

In one embodiment a blower comprises a case comprising a first surface, a second surface opposite the first surface, and a side wall extending between portions of the first surface and the second surface, wherein the side wall comprises an air inlet and an air outlet, an impeller disposed in the case and rotatable about an axis of rotation extending between the first surface and the second surface. Portions of the side wall are disposed at least a first distance from the axis of rotation and the impeller is to define a circumferential airflow path within the case, and the impeller is to create an airflow in the circumferential airflow path between the air inlet and the air outlet. 1. A blower , comprising:a case comprising a first surface, a second surface opposite the first surface, and a side wall extending between portions of the first surface and the second surface, wherein the side wall comprises an air inlet and an air outlet;an impeller disposed in the case and rotatable about an axis of rotation extending between the first surface and the second surface;wherein portions of the side wall are disposed at least a first distance from the axis of rotation and the impeller is to define a circumferential airflow path within the case; andwherein the impeller is to create an airflow in the circumferential airflow path between the air inlet and the air outlet.2. The blower of claim 1 , wherein:the impeller is to rotate about an axis of rotation perpendicular to a first plane; andthe air outlet defines an aperture disposed in a second plane, substantially perpendicular to the first plane.3. The blower of claim 1 , wherein the impeller comprises blades constructed from a porous material.4. The blower of claim 2 , wherein:the aperture is disposed within 5 millimeters of a plane perpendicular to the first plane which includes the axis of rotation.5. The blower of claim 1 , wherein:portions of the impeller are disposed at a second distance from the axis of rotation; andthe ...

ROTOR ASSEMBLY

The disclosure relates to a high-speed radial fan and to a rotor assembly () for a high-speed radial fan, comprising a bearing tube () which is axially open in the interior and in which a shaft () carrying a fan wheel () is mounted with a rotor (), wherein the rotor () of the rotor assembly () is mounted in a cylindrical separating can (). 1102040305050103. A rotor assembly () for a high-speed radial fan , comprising a bearing tube () which is axially open in the interior and in which a shaft () carrying a fan wheel () is mounted with a rotor () , wherein the rotor () of the rotor assembly () is mounted in a cylindrical separating can ().211023. The radial fan () with a rotor assembly () according to claim 1 , characterized in that the radial fan has a fan housing () claim 1 , which is formed as a single piece with the separating can ().31204050403. The radial fan () according to claim 1 , characterized in that the bearing tube () with the shaft () and the rotor () mounted on the shaft () is arranged in the separating can () claim 1 , which is closed around the circumference.41322a. The radial fan () according to claim 2 , characterized in that the separating can () extends away from a substantially flat housing base plate () of the fan housing () in the axial direction.5150515033a. The radial fan () according to claim 1 , characterized in that an air gap is formed between the rotor () and a stator () surrounding the rotor () claim 1 , and the separating can () with its cylindrical separating can walls () is arranged within the air gap.613. The radial fan () according to claim 1 , characterized in that the material of the separating can () is an isolator or has a contact resistance greater than 10 Ohm.7140242025203050. The radial fan () according to claim 1 , characterized in that the shaft () claim 1 , on a first bearing () arranged in the bearing tube () and a second bearing () arranged in the bearing tube () spaced apart in the axial direction as relates to the ...

BLOWER ASSEMBLY FOR ELECTRONIC DEVICE

In one embodiment a blower comprises a case comprising a first surface, a second surface opposite the first surface, and a side wall extending between portions of the first surface and the second surface, wherein the side wall comprises an air inlet and an air outlet, an impeller disposed in the case and rotatable about an axis of rotation extending through a hub, wherein the impeller comprises a plurality of blades which define a gap with the hub, wherein portions of the side wall are disposed at least a first distance from the axis of rotation and the impeller is to define a circumferential airflow path within the case, wherein the impeller is to create an airflow in the circumferential airflow path between the air inlet and the air outlet, and a feature disposed in the gap to impede recirculation of air in the case. 1. A blower , comprising:a case comprising a first surface, a second surface opposite the first surface, and a side wall extending between portions of the first surface and the second surface, wherein the side wall comprises an air inlet and an air outlet;an impeller disposed in the case and rotatable about an axis of rotation extending through a hub, wherein the impeller comprises a plurality of blades which define a gap with the hub;wherein portions of the side wall are disposed at least a first distance from the axis of rotation and the impeller is to define a circumferential airflow path within the case;wherein the impeller is to create an airflow in the circumferential airflow path between the air inlet and the air outlet; anda feature disposed in the gap to impede recirculation of air in the case.2. The blower of claim 1 , wherein:the feature comprises an arcuate member disposed within portions of the gap.3. The blower of claim 1 , wherein the feature is formed integrally with at least one of the first surface or the second surface.4. The blower of claim 1 , wherein:the impeller blades are formed from at least one of a rigid material or a porous ...

AIR-CONDITIONING INDOOR MACHINE

A wall-mounted air-conditioning indoor machine includes a cross-flow fan, a casing and a heat exchanger. The casing includes a stabilizer and a rear guider. The stabilizer is divided into top and bottom parts with a tongue part in between. The stabilizer, rear guider, and cross-flow fan are arranged so that three expressions, (θa−θ)><(θb−θ)<, and θb≧θa, are satisfied. A reference angle (θ) is formed by a fan-referencing horizontal line and a scroll-referencing line. A first angle (θa) is formed by the fan-referencing horizontal line and a first straight line connecting a fan center point and a front-surface-side closest point of the stabilizer. A second angle (θb) is formed by the fan-referencing horizontal line and a second straight line connecting the fan center point and a back-surface-side closest point of the rear guider. 1. A wall-mounted air-conditioning indoor machine , comprising:a cross-flow fan arranged and configured to generate an air flow, the cross-flow fan having a plurality of blades aligned along a circumference thereof;a casing including a stabilizer on a front-surface side and a rear guider on a back-surface side, the stabilizer being divided into a top part and a bottom part with a tongue part in between, a blown air channel being formed in the casing by the stabilizer and the rear guider, and the blown air channel having a scroll shape through which air flows from the cross-flow fan to a blow-out port; anda heat exchanger including a front-surface-side heat exchange section and a back-surface-side heat exchange section, the heat exchanger being arranged on an airflow-upstream side of the cross-flow fan; a horizontal line through a fan center point, which is a rotational center of the cross-flow fan, being a fan-referencing horizontal line,', 'a line designated as a scroll-referencing line being a straight line, which of any straight line tangent to a circle connecting outer ends of the plurality of fan blades of the cross-flow fan and adjoining ...

FAN, MOLDING DIE, AND FLUID FEEDER

A fan includes a plurality of blade portions arranged spaced apart from each other in a circumferential direction, each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of the pressure surface. The plurality of blade portions include a first blade portion and a second blade portion different from each other in at least one of an outer peripheral blade tip angle and an inner peripheral blade tip angle, and are provided such that a discrepancy angle is equal among a plurality of the blade portion. 1. A fan comprising a plurality of blade portions arranged spaced apart from each other in a circumferential direction , each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of said pressure surface , whereinwhen cut along a plane orthogonal to a rotation axis of the fan, said blade portion has an inner edge portion at which a center line between said pressure surface and said suction surface intersects an inner peripheral-side blade tip, and an outer edge portion at which the center line intersects an outer peripheral-side blade tip,as the fan is rotated, a fluid flow is produced on said blade surface to flow between said inner edge portion and said outer edge portion,when an angle between a straight line passing through a rotational center of the fan and said outer edge portion and a tangent of said center line at said outer edge portion is defined as an outer peripheral blade tip angle, an angle between a straight line passing through the rotational center of the fan and said inner edge portion and a tangent of said center line at said inner edge portion is defined as an inner peripheral blade tip angle, and an angle between a chord line in contact with the inner peripheral-side and outer peripheral-side blade tips on said pressure surface side, ...

CENTRIFUGAL FAN

A centrifugal fan includes a fan frame and a fan impeller received in the fan frame. The fan frame has at least one air inlet and at least one air outlet respectively formed on two sides of the fan frame. The fan impeller has a hub, an extension section outward extending from the hub and multiple blades disposed on the extension section. Each blade has a front end and a rear end. The rear ends of the blades are annularly arranged to together define a virtual geometrical configuration. A flow guide space is defined between the virtual geometrical configuration and the hub. A chord length is defined between the front and rear ends of the blade. The flow guide space has a width larger than or equal to the chord length so as to thin the centrifugal fan and enhance the performance thereof. 1. A centrifugal fan comprising:a fan frame, an upper side and a lower side of the fan frame being closed, the fan frame having an internal receiving space, the fan frame having at least one air inlet and at least one air outlet in communication with the receiving space, the air inlet and the air outlet being respectively formed on one side of the fan frame and another side of the fan frame; anda fan impeller received in the receiving space, the fan impeller having multiple blades, an extension section and a hub, the extension section outward extending from an outer circumference of the hub, the blades being disposed on the extension section in a direction away from the hub, each blade having a front end and a rear end, the rear ends of the blades being annularly arranged to together define a virtual geometrical configuration, a flow guide space being defined between the virtual geometrical configuration and the hub, a chord length being defined between the front end and the rear end of the blade, the flow guide space having a width larger than or equal to the chord length of the blade.2. The centrifugal fan as claimed in claim 1 , wherein the fan frame further has a cover board claim ...

TURBOCHARGER

A turbocharger includes a compressor housing including a scroll chamber, and a seal plate assembled to the compressor housing. The compressor housing and the seal plate define an intake passage. The seal plate includes a plate-side connecting portion in contact with the compressor housing. The radius of curvature of a wall surface of the scroll chamber of the compressor housing, in a section including a compressor rotational axis, is increased in a direction toward an outlet located on the downstream side of the scroll chamber in an intake air flow direction. The plate-side connecting portion protrudes in a direction along the compressor rotational axis. The radius of curvature of an inner surface of the seal plate continuous with the scroll chamber of the intake passage, in the section including the compressor rotational axis, is increased in the direction toward the outlet of the scroll chamber. 1a compressor housing including a scroll chamber; anda seal plate assembled to the compressor housing,the compressor housing and the seal plate defining an intake passage,the seal plate including a plate-side connecting portion in contact with the compressor housing,a radius of curvature of a wall surface of the scroll chamber of the compressor housing, in a section including a compressor rotational axis, being increased in a direction toward an outlet located on a downstream side of the scroll chamber in an intake air flow direction,the plate-side connecting portion protruding in a direction along the compressor rotational axis, anda radius of curvature of an inner surface of the seal plate continuous with the scroll chamber of the intake passage, in the section including the compressor rotational axis, being increased in the direction toward the outlet of the scroll chamber.. A turbocharger comprising: The disclosure of Japanese Patent Application No. 2014-139301 filed on Jul. 7, 2014 including the specification, drawings and abstract is incorporated herein by reference ...

SHROUDED FAN IMPELLER WITH REDUCED COVER OVERLAP

The described embodiments relate to improving efficiency of a low-profile cooling fan. In one embodiment, an impeller of the cooling fan includes a shroud which covers a central portion of the impeller, thereby allowing a central inlet portion of the blades to have an increased fan blade height when compared to a cooling fan constrained by minimum part tolerances between the fan blades and a portion of the fan housing. In some embodiments, the impeller includes splitter blades that can improve performance of the low-profile cooling fan. 1. A fan comprising:a cover having a first cover plate and a second cover plate vertically separated to define an interior fan region between the first cover plate and the second cover plate; and a central hub,', 'a plurality of blades extending from an interior edge of each blade coupled with the central hub to an exterior edge of each blade, wherein each blade of the plurality of blades is characterized by a first edge proximate the first cover plate and a second edge opposite the first edge, and wherein the exterior edge of each blade of the plurality of blades at least partially extends within the interior fan region, and', 'a shroud coupled with the plurality of blades along the second edge of each blade of the plurality of blades., 'an impeller comprising2. The fan of claim 1 , wherein the shroud is characterized by an interior edge and an exterior edge extending towards an outer edge of the second cover plate claim 1 , wherein the exterior edge of the shroud is separated from the outer edge of the second cover plate by a gap length.3. The fan of claim 2 , wherein a ratio of the gap length to a diameter of the impeller measured to the exterior edges of the plurality of blades is less than 0.01.4. The fan of claim 2 , wherein the shroud defines a lip extending across the gap length and past an exterior edge of the second cover plate claim 2 , and wherein an outer diameter of the shroud is less than an outer diameter defined by ...

BOSS THERMAL SEAL

Systems and methods for thermal seals are described herein. A thermal seal may comprise a first metallic plate having a first inner surface and a first outer surface, a second metallic plate having a second inner surface and a second outer surface, the second metallic plate being oriented substantially parallel to the first metallic plate such that the first inner surface and the second inner surface are separated by a gap, and a thermal wool having a plate portion in contact with the first inner surface and the second inner surface, the plate portion filling a void between the first inner surface and the second inner surface, and having a shoulder portion extending from a perimeter of the plate portion, the shoulder portion extending outward from between the first metallic plate and the second metallic plate. 1. A thermal seal comprising:a first metallic plate having a first inner surface and a first outer surface;a second metallic plate having a second inner surface and a second outer surface, the second metallic plate being oriented substantially parallel to the first metallic plate such that the first inner surface and the second inner surface are separated by a gap; anda thermal wool having a plate portion in contact with the first inner surface and the second inner surface, the plate portion filling a void between the first inner surface and the second inner surface, and having a shoulder portion extending from a perimeter of the plate portion, the shoulder portion extending outward from between the first metallic plate and the second metallic plate.2. The thermal seal of claim 1 , wherein the shoulder portion bends in a direction perpendicular to the plate portion claim 1 , the shoulder portion configured to thermally seal at least a portion of an adjacent component.3. The thermal seal of claim 1 , wherein an aperture is disposed in the thermal seal claim 1 , the aperture having a centerline axis being substantially perpendicular to the first metallic plate ...

Shaft Seal

A shaft seal for an exhaust fan. The seal limits leakage from within an exhaust fan housing around an exhaust fan drive shaft that extends between a rotational power source exterior to the exhaust fan housing and a position within the exhaust fan housing. The seal comprises a plenum generally positioned about the exhaust fan drive shaft at the point where the shaft extends into the fan housing; an auxiliary blower comprising a housing, an internal blade driven by an auxiliary blower drive shaft, and an auxiliary blower drive to rotate the drive shaft where the auxiliary blower drive is operatively associated with the rotational power source such that operation of the rotational power sources causes a rotation of the exhaust fan drive shaft and the auxiliary blower drive shaft; and a duct fluidly connecting the auxiliary blower housing to the plenum. 117-. (canceled)18. A shaft seal for an exhaust fan , the shaft seal for limiting the leakage of a fluid from within an exhaust fan housing around an exhaust fan drive shaft that extends between a position exterior to the exhaust fan housing and a position within the exhaust fan housing , the shaft seal comprising:a plenum generally positioned about the exhaust fan drive shaft at the point where the exhaust fan drive shaft extends into the exhaust fan housing;an auxiliary blower comprising an auxiliary blower housing, an internal auxiliary blower blade or impeller driven by an auxiliary blower drive shaft, and an auxiliary blower drive to rotate the auxiliary blower drive shaft, said auxiliary blower drive comprising a first pulley mounted to said auxiliary blower drive shaft, said first pulley rotated by a belt driven by a second pulley mounted to either the exhaust fan drive shaft or to a rotating shaft of an exhaust fan motor; anda duct fluidly connecting said auxiliary blower housing to said plenum,said auxiliary blower mounted upon a track such that the position of said first pulley relative to said second pulley ...

Centrifugal impeller and centrifugal fan comprising the same

A centrifugal impeller including a wheel cover, a wheel disc, and a plurality of blades disposed between the wheel cover and the wheel disc. The wheel cover and the wheel disc each includes a sheet metal, and the plurality of blades includes a composite material. The wheel cover includes an air inlet. The wheel disc includes a central part and a motor mounting base disposed on the central part. Every two adjacent blades form an air channel including an air outlet. The plurality of blades each includes a metal frame, and a plastic shell disposed on the metal frame. Two ends of the metal frame are connected to the wheel cover and the wheel disc, respectively. The metal frame is integrated with the plastic shell through injection molding. The plastic shell is wrapped around at least a part of the metal frame.

CENTRIFUGAL FAN

A valve device for a cooling water system of a motor vehicle, with a housing including a first connection and a second connection for a first liquid circuit, and a third connection and a fourth connection for a second liquid circuit, wherein the first connection is permanently fluidically connected to the second connection, and with a valve unit including a movably mounted valve element with which a thermally activatable spring element is associated, and which opens a connection between the third connection and the fourth connection in a first end position and cuts off the connection in a second end position. The thermally activatable spring element is arranged in a chamber located between the first connection and the second connection, which is permanently cut off from the third and the fourth connection and which preloads the valve element in the direction of the second end position. 1. A centrifugal fan comprising:a resin upper casing,a resin lower casing,an impeller,a motor, anda circuit board,wherein the impeller, the motor and the circuit board are housed between the resin upper casing and the resin lower casing,ribs are formed at a bottom surface of the lower casing,the lower casing includes primary pins for fixing the circuit board to the lower casing, andthe primary pins are reinforced by the rib.2. The centrifugal fan according to claim 1 , wherein the ribs include primary ribs extending along a radial direction and secondary ribs extending along a circumferential direction claim 1 , andeach of the primary pins is provided in a standing manner at a part where the primary rib and the secondary rib intersect.3. The centrifugal fan according to claim 2 , wherein the lower casing includes a circular protruding part reinforced by the primary ribs claim 2 , anda hollow cylindrical bearing holder, rotatably holding a shaft, which is a rotating axis of the impeller, is held in the circular protruding part.4. The centrifugal fan according to claim 3 , wherein each ...

BLOWER

A blower including a volute, a motor, a blower wheel, and a box. The motor is disposed on the volute. The motor includes a spindle, a rotor assembly, a stator assembly, a motor housing, a front-end cover, a rear-end cover and a capacitor. The rotor assembly is disposed on the spindle. The stator assembly and the motor housing are integrated and sleeved on the rotor assembly. The front-end cover and the rear-end cover are installed on the two ends of the motor housing, respectively. Two ends of the spindle are supported on the bearing of the front-end cover and the bearing of the rear-end cover, respectively. The front end of the spindle extends into the volute and is connected to the blower wheel. The capacitor is disposed in a cavity formed by the box and the rear-end cover. 2. The blower of claim 1 , wherein the box comprises a cavity part and a turnup part extending out from an end of the cavity part; the capacitor is positioned in the cavity part.3. The blower of claim 2 , wherein a ring-shaped gasket is disposed between the turnup part and the rear-end cover.4. The blower of claim 3 , wherein the turnup part claim 3 , the gasket and the rear-end cover are locked and fixed together through a plurality of bolts.5. The blower of claim 2 , wherein the front-end cover and the rear-end cover are respectively disposed on two ends of the motor housing through bolts and nuts.6. The blower of claim 3 , wherein the front-end cover and the rear-end cover are respectively disposed on two ends of the motor housing through bolts and nuts.7. The blower of claim 4 , wherein the front-end cover and the rear-end cover are respectively disposed on two ends of the motor housing through bolts and nuts.8. The blower of claim 5 , wherein first gaps and second gaps corresponding to the first gaps are respectively disposed on outer edges of the turnup part and the gasket; and the nuts are disposed in the first gaps and the second gaps.9. The blower of claim 6 , wherein first gaps and ...

BLOWER

A blower has a centrifugal multi-blade fan that has blades around a rotation axis and a casing that houses the centrifugal multi-blade fan. The centrifugal multi-blade fan satisfies a relation of d/h≧5, in which d is a diameter of a part having the blades, and h is a height of the blades in an axial direction of the rotation axis. A part of the casing on one side in an axial direction of the centrifugal multi-blade fan has an air suction port. A part of the casing on the radial outer side of the centrifugal multi-blade fan has an air passage through which air blown from the centrifugal multi-blade fan flows. The casing has an enlargement portion that enlarges the air passage on at least one of the one side and an other side in the axial direction as the casing extends toward the radial outer side. 1. A blower comprising:a centrifugal multi-blade fan that has blades around a rotation axis, the centrifugal multi-blade fan that draws air from a radial inner side and blows the air to a radial outer side; anda casing that houses the centrifugal multi-blade fan, wherein{'b': 1', '1', '1', '1, 'the centrifugal multi-blade fan satisfies a relation of d/h≧5, in which d is a diameter of a part having the blades, and h is a height of the blades in an axial direction of the rotation axis,'}a part of the casing on one side in an axial direction of the centrifugal multi-blade fan has an air suction port that draws the air,a part of the casing on the radial outer side of the centrifugal multi-blade fan has an air passage through which air blown from the centrifugal multi-blade fan flows, andthe casing has an enlargement portion that enlarges the air passage on at least one of the one side and an other side in the axial direction as the casing extends toward the radial outer side.2. The blower according to claim 1 , whereina surface of the blower casing on the one side in the axial direction has a recessed portion that is recessed toward the other side in the axial direction and ...

Ceiling mounted ventilation fan with illumination

A ceiling mounted ventilation fan includes a housing, a fan unit and lighting equipment installed in the housing. The housing including a first opening connected to an air outlet and communicating with a duct, and a second opening that communicates with a room interior. The lighting equipment includes an illumination unit, and a cover, that surrounds the illumination unit, and has a reflecting surface which reflects light from the illumination unit and guides the light into the room. The fan unit includes a fan and a casing positioned at a first position, spaced, from a second position that is above the second opening, the fan casing surrounding the fan and having an air inlet opening directed upwardly. Air is introduced through the second opening and through the air inlet into the fan unit and is discharged through into the duct by the fan unit.

SHAFTLESS FAN STRUCTURE

A shaftless fan includes a fan stator, a vane rotor and a rolling bearing. The rolling bearing is installed between the fan stator and the vane rotor and includes an inner ring, an outer ring, and a plurality of rolling elements rollably installed between the inner and outer rings, and the inner and outer rings of the rolling bearing are rotated in opposite direction with respect to each other, so that the vane rotor can be rotated on the fan stator to connect the fan stator with the vane rotor through the rolling bearing, so as to achieve the shaftless effect. 1. A shaftless fan structure , comprising:a fan stator;a vane rotor; anda rolling bearing, installed between the fan stator and the vane rotor, and including an inner ring, an outer ring, and a plurality of rolling elements rollably installed between the inner and outer rings; wherein the inner and outer rings are rotated in opposite directions with respect to each other, so that the vane rotor can be rotated on the fan stator.2. The shaftless fan structure of claim 1 , wherein the vane rotor includes an impeller claim 1 , a plurality of blades disposed outside the impeller claim 1 , and a magnetic element installed in the impeller claim 1 , and the impeller has a circular wall claim 1 , and each blade is arranged around the periphery of the impeller and mounted onto the circular wall.3. The shaftless fan structure of claim 2 , further comprising a hood for mounting the fan stator thereon claim 2 , and a bearing collar mounted onto the hood and fixed onto the inner ring of the rolling bearing claim 2 , and the outer ring of the rolling bearing being fixed into the circular wall of the vane rotor.4. The shaftless fan structure of claim 3 , wherein the impeller is covered onto the exterior of the fan stator and provided for the fan stator to be accommodated in a space enclosed by the impeller and the circular wall of the impeller.5. The shaftless fan structure of claim 3 , wherein the rolling bearing is a ball ...

FAN, MOLDING DIE, AND FLUID FEEDER

A fan includes a plurality of blade portions arranged spaced apart from each other in a circumferential direction, each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of said pressure surface. The plurality of the blade portions include a first blade portion and a second blade portion in which when they are rotated around the rotation axis of the fan and overlapped on one blade portion, one of an inner edge portion and an outer edge portion is disposed to be coincident with each other, and the other of the inner edge portion and the outer edge portion is disposed to be displaced from each other. 1. A fan comprising a plurality of blade portions arranged spaced apart from each other in a circumferential direction , each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of said pressure surface , whereinwhen cut along a plane orthogonal to a rotation axis of the fan, said blade portion has an inner edge portion at which a center line between said pressure surface and said suction surface intersects an inner peripheral-side blade tip, and an outer edge portion at which the center line intersects an outer peripheral-side blade tip,as the fan is rotated, a fluid flow is produced on said blade surface to flow between said inner edge portion and said outer edge portion,when an angle between a straight line passing through a rotational center of the fan and said outer edge portion and a tangent of said center line at said outer edge portion is defined as an outer peripheral blade tip angle, and an angle between a straight line passing through the rotational center of the fan and said inner edge portion and a tangent of said center line at said inner edge portion is defined as an inner peripheral blade tip angle,a plurality of said blade portions are ...

Fan Impeller and Fan Using Fan Impeller

The present invention discloses an impeller for a fan, which comprises a plurality of blades (2) and a rear wheel disc (1); the plurality of blades (2) are arranged one by one successively along a circumferential direction of the rear wheel disc (1); an angle α is defined between the first projection line (21a) of each outer edge (21) and a radial line of the rear wheel disc (1) and satisfies the following condition: −60°≤α≤60°; an angle β is defined between the second projection line (22a) of each inner edge (22) and the radial line of the rear wheel disc (1) and satisfies the following condition: 20°≤β≤70°; an angle θ is defined between a first connecting line (L1) and a second connecting line (L2) and satisfies the following condition: 10°≤Θ≤65°. The impeller for a fan is good in aerodynamic performance, high in both fan efficiency and air pressure, and large in gradient of the generated negative pressure.

STACKING-TYPE STATOR USING MULTILAYER PRINTED CIRCUIT BOARD, AND SINGLE-PHASE MOTOR AND COOLING FAN USING SAME

Provided is a stacking-type stator using a multilayer printed circuit board (PCB) in which torque generation can be maximized in an opposite rotor, and a single-phase motor and a cooling fan both using the same. The stacking-type stator includes: a multilayer printed circuit board (PCB) that is stacked and integrated with a penetration opening; and a coil pattern patterned on each layer of the multilayer PCB, wherein throughholes are formed to penetrate the multilayer PCB and connect the coil patterns, wherein the coil pattern comprises: inner and outer rotating direction pattern portions which are arranged in a circumferential direction at intervals along an inner circumference and an outer circumference concentrically with the penetration opening; and a radial pattern portion that interconnects the inner rotating direction pattern portion and the outer rotating direction pattern portion that are adjacent to each other and is disposed along the radial direction. 1. A stacking-type stator for a single-phase motor , the stacking-type stator comprising:a multilayer printed circuit board (PCB) that is stacked and integrated with a penetration opening; anda coil pattern patterned on each layer of the multilayer PCB,wherein throughholes are formed to penetrate the multilayer PCB and connect the coil patterns,wherein the coil pattern comprises:inner and outer rotating direction pattern portions which are arranged in a circumferential direction at intervals along an inner circumference and an outer circumference concentrically with the penetration opening; anda radial pattern portion that interconnects the inner rotating direction pattern portion and the outer rotating direction pattern portion that are adjacent to each other and is disposed along the radial direction.2. The stacking-type stator for a single-phase motor of claim 1 , whereinthe coil pattern is patterned in a spiral pattern so that protrusions and recesses are repeated along the perimeter of the penetration ...

RADIAL VENTILATOR

A radial ventilator () has a base part (), a housing part (), with a discharge , placed on the base part (), a motor electronics unit (), and an internal rotor electric motor. The motor drives a ventilator wheel () via a shaft (). The motor electronics unit () and a stator () of the electric motor are encapsulated by an extrusion coating () in the base part () and together form an integral one-piece structural unit. The radial ventilator () has a pressure chamber (D) enlarging in a spiral shape around the ventilator wheel (). The pressure chamber (D) is formed and defined by the housing part () and the extrusion coating (). 116.-. (canceled)17. A radial ventilator comprising: a base part , a housing part placed on the base part , a motor electronics unit , and an internal rotor electric motor;a ventilator wheel drive via a shaft of the electric motor;the motor electronics unit and a stator of the electric motor are encapsulated by an extrusion coating in the base part and together form an integral one-piece structural unit; the radial ventilator has a pressure chamber expanding in a spiral shape around the ventilator wheel, the pressure chamber is formed and defined by the housing part and the extrusion coating.18. The radial ventilator as claimed in claim 17 , wherein the extrusion coating comprises a protruding ring section extending in the axial direction claim 17 , the axial end face of the ring section defines the pressure chamber and the ring section defines a receptacle chamber for the motor electronics unit.19. The radial ventilator as claimed in claim 17 , wherein the spiral-shaped pressure chamber is formed by an axial and radial expansion.20. The radial ventilator as claimed in claim 17 , wherein the housing part has a constant diameter delimiting the pressure chamber and a spiral shape of the pressure chamber is exclusively defined by the extrusion coating.21. The radial ventilator as claimed in claim 17 , wherein the electric motor is arranged on a ...

PORTABLE WORK APPARATUS

A portable work apparatus has a drive motor and a housing which is formed at least partially by a housing part. The work apparatus has an operating fluid tank which is formed separately from the housing part and which has a cavity for receiving operating fluid. The operating fluid tank has a first portion which is arranged in a receptacle of the housing part, and a second portion which at least partially delimits the cavity and which protrudes from the receptacle. Provision is made for the operating fluid tank to be fixed to the housing part by at least one fastener, and for the receptacle to be delimited at least partially by a plurality of ribs of the housing part that are arranged at a spacing (f) from one another. 1. A portable work apparatus comprising:a drive motor;a housing part;a housing at least partially formed by said housing part;an operating fluid tank formed separately from said housing part;said operating fluid tank defining a cavity configured to accommodate operating fluid;said housing part including a receptacle;said operating fluid tank having a first section arranged in said receptacle of said housing part;said operating fluid tank further having a second section projecting out of said receptacle and at least partially delimiting said cavity;at least one fastener configured to fix said operating fluid tank to said housing part;said housing part having a plurality of ribs mutually arranged at a distance (f) to each other; and,said plurality of ribs at least partially delimiting said receptacle.2. The portable work apparatus of claim 1 , wherein said second section includes a filler neck.3. The portable work apparatus of claim 1 , wherein:said operating fluid tank defines a circumferential direction and a circumferential range (e);each of said ribs has an individual measured width (c); and,the sum of said individual measured widths (c) is less than 50% of said circumferential range (e).4. The portable work apparatus of claim 1 , wherein:said ...

Centrifugal Fan Assembly For Road Sweeping Machines

The present invention is directed to a centrifugal fan assembly () for the debris collection arrangement () of a road cleaning machine (). The assembly () comprises a casing (), a rotatable impeller () and a wall (). The casing () comprises a volute potion () connected to an outlet passageway (), a corner () being formed therebetween. The impeller () comprises a plurality of blades () and is located in the volute portion () proximate the corner (). The wall () separates the outlet passageway () into a first and second passageway () and extends to an inner end () proximate the impeller (). The inner end () is positioned, and the impeller () is arranged, such that when a blade () passes the inner end () a second pressure wave is formed that destructively interferes with a first pressure wave formed by a blade () passing the corner (). The distance W between the inner end () and impeller () is greater than the distance Z between the corner () and impeller (). 2. A centrifugal fan assembly as claimed in wherein W is in the range of from 1.1Z to and including 1.5Z.3. A centrifugal fan assembly as claimed in any one of the preceding claims wherein the angle about the centre of rotation of the impeller between the inner end and corner is the sum of:the angle between at least two of the plurality of blades; andan angle, which is less than the angle between two adjacent blades, resulting in the second pressure wave being out of phase by approximately 180° to the first pressure wave.4. A centrifugal fan assembly as claimed in wherein the angle about the centre of rotation of the impeller between the inner end and corner is the sum of:the angle between three of the plurality of blades; andan angle, which is less than the angle between two adjacent blades, resulting in the second pressure wave being out of phase by approximately 180° to the first pressure wave.5. A centrifugal fan assembly as claimed in any one of the preceding claims wherein the number of blades is a multiple ...

FAN COVER WITH PLURALITY OF OPENINGS

Example implementations relate to a fan cover with a plurality of openings. For example, a device may include a fan cover to a fan device and a heat conduction device, a portion of the heat conduction device being coupled to an inside surface of the fan cover. The fan cover provides airflow for heat dissipation in a computing device and surrounds at least a portion of the fan device. The fan device has a first side associated with an axis about which an impeller of the fan device is capable of rotating and a second side associated with blade edges of the impeller of the fan device. The fan cover includes a flat portion to surround the first side and a curved portion to surround the second side, the curved portion having a plurality of openings such that airflow produced by the fan device is capable of passing through. 1. A device , comprising:a fan device, the fan device having a first side associated with an axis about which an impeller of the fan device is capable of rotating and a second side associated with blade edges of the impeller of the fan device; a flat portion to surround the first side of the fan device; and', 'a curved portion to surround the second side of the fan device, the curved portion having a plurality of openings such that the airflow produced by the fan device is capable of passing through the plurality of openings; and, 'a fan cover to surround at least a portion of the fan device, the fan cover to provide airflow for heat dissipation in a computing device, the fan cover comprisinga heat conduction device, wherein a portion of the heat conduction device is coupled to an inside surface of the fan cover.2. The device of claim 1 , wherein the fan cover is made of metal.3. The device of claim 1 , wherein the fan cover is made of a plastic.4. The device of claim 1 , wherein the heat conduction device is to send heat from a component of the computing device to the plurality of openings.5. The device of claim 1 , wherein the heat conduction device ...

Gas injection blower

A gas injection blower includes a housing forming a box around the pump chamber, wherein the perimeter of the housing is also formed with a pump chamber communicating air inlet and an exhaust outlet, a fan shaft connected to a drive shaft the form of a rotatable type arranged in the pump chamber, the air inlet, forming a pressurized chamber of the pump flow passage between the fan and air vents and communicate with each other, the drive shaft extending through the shaft connected to a pump outdoor power source, wherein the drive shaft, at least between the inner wall of the frame around the blades and the pump chamber is formed a slit communicating the boost pressure drop of the flow channel, which is housing and forming a gap communicating the pressure drop gas injection passage; with the passage of gas injected into the inner injection cleaning gas pressure, to improve the traditional drop relatively easy accumulation of dust inside the gap problem.

Centrifugal compressor casing and centrifugal compressor

A centrifugal compressor casing, comprising a bundle which rotatably supports a rotating shaft, and an impeller fixed to the rotating shaft and that rotates with the rotating shaft about an axis of the rotating shaft, and in which an annular suction flow channel centered on the axis introduces fluid into the flow channel of the impeller, and an annular discharge flow channel centered on the axis that discharges the fluid from the flow channel of the impeller, are formed; a casing main body which covers the bundle from the outer circumferential side; and a volute piece which is provided on an inner surface of the casing main body in the discharge flow channel.

FAN AND COVER FOR FAN

A fan includes an electric motor and a fan wheel drivable or driven by the electric motor, arranged within its housing. The underside of the housing has an opening for an electric outlet, and a side the housing has a bracket, thereby forming a bushing. An electric line is arranged at least partially at the underside of the housing and is guided through the bushing, and a cover element is arranged at the underside of the housing. The cover element has a first section and a second section. The cover element is arranged at the underside of the housing in such a way that the first section is at least partially arranged in the bushing and clamps the electric line in the bushing while forming a strain relief, and that the second section covers the opening. 1. Fan having a housing , wherein in the housing an electric motor and a fan wheel drivable or driven by the electric motor are arranged , wherein on an underside of the housing , the housing has an opening for an electric outlet , wherein on a circumferential side the housing has a bracket , so that a bushing is formed between the bracket and the circumferential side , wherein an electric line is arranged at least partially at the underside of the housing and is guided through the bushing , characterized in that a cover element is arranged at the underside of the housing , wherein the cover element has a first section and a second section , wherein the first section and the second section are arranged at an angle towards each other , and in that the cover element is arranged at the underside of the housing in such a way that the first section is at least partially arranged in the bushing and clamps the electric line in the bushing while forming a strain relief , and in that the second section covers the opening.2. Fan according to claim 1 , characterized in that a duct is formed between the second section and the underside of the housing claim 1 , wherein the electric line is arranged in the duct claim 1 , and in that ...

QUIET BLOWER APPARATUS AND SYSTEM AND METHOD FOR REDUCING BLOWER NOISE

A blower assembly including a motor, an impeller and a volute that is configured such that an inlet chamber of the volute and an outlet chamber of the volute are divided from one another by an airtight membrane and the membrane is configured to allow the transmission of pressure waves between the inlet and outlet chambers. 1. A system for reducing noise generated by a blower , the system comprising:a blower, comprising a motor, an impeller, an inlet port, and an outlet port;an enclosure in which the blower is located, the enclosure being divided into an inlet section including an enclosure inlet port and an outlet section including an enclosure outlet port, the outlet section having a higher pressure than the inlet section in use; anda separator configured to divide the enclosure into the inlet section and the outlet section and to provide acoustic communication between the inlet section and the outlet section.2. The system of wherein the separator comprises a membrane.3. The system of wherein the separator is at least in part flexible.4. The system of wherein the separator is configured to vibrate to produce at least a partial cancellation of noise generated by the blower.5. The system of wherein the separator comprises foil.6. The system of wherein the separator comprises any of a plastic claim 5 , polymer claim 5 , elastomer or rubber.7. The system of wherein the separator is metallic.8. The system of wherein the separator comprises one or more regions of compliance.9. The system of wherein the separator comprises a relatively hard central portion with a flexible surround or flexible connection points.10. The system of further comprising a layer formed by the separator and an additional separator claim 1 , the layer providing a fluid medium to transmit acoustic waves between the inlet section and the outlet section.11. The system of claim 1 , wherein the separator is balloon-like and is in fluid connection with the outlet port of the blower and the outlet port of ...

Power blower

A power blower includes a power blower main body and a blower tube member. The main body takes in air through an air intake portion by rotation of a blower fan rotated by a motor and discharges the air from an air discharge portion. The blower tube member has an opening on a base end side through which air discharged from the air discharge portion of the main body flows in, and an opening on a tip end side from which the air which has flowed in, is blown out. When a plane perpendicular to an axis of the blower tube member is in contact with the opening at the tip end side of the blower tube member, blown-air passages are formed on opposite sides of contact portions of the opening at the tip end side of the blower tube member and the plane.

CENTRIFUGAL PUMP AND METHOD OF PRODUCING CENTRIFUGAL PUMP

A centrifugal pump includes a metallic main body casing in which a rotating blade member is accommodated. The metallic main body casing includes an upper main body casing, a lower main body casing which is fixed to the upper main body casing, and a blade casing, which partitions an interior space formed by the upper main body casing and the lower main body casing so that a fluid introducing passage is formed at an upper portion, and a rotating accommodating space that accommodates the rotating blade member is formed at a lower portion. An edge of the blade casing is airtightly fixed to the upper main body casing or the lower main body casing. 1. A centrifugal pump comprising:a metallic main body casing in which a rotating blade member is accommodated, an upper main body casing,', 'a lower main body casing which is fixed to the upper main body casing, and, 'the metallic main body casing including;'}a blade casing, which partitions an interior space formed by the upper main body casing and the lower main body casing so thata fluid introducing passage is formed at an upper portion, anda rotating accommodating space that accommodates the rotating blade member is formed at a lower portion,wherein an edge of the blade casing is airtightly fixed to the upper main body casing or the lower main body casing.2. The centrifugal pump of claim 1 , wherein the edge of the blade casing is airtightly fixed by welding claim 1 , brazing or adhesion.3. The centrifugal pump of claim 2 , wherein on a vicinity of a fixing portion of at least one of the upper main body casing claim 2 , the blade casing claim 2 , and the lower main body casing claim 2 , a groove for flow stop which prevents the fixing material from flowing is formed.4. The centrifugal pump of claim 3 , wherein the groove for flow stop is formed by notching at least one of the upper main body casing claim 3 , the blade casing claim 3 , and the lower main body casing.5. The centrifugal pump of claim 3 , wherein the groove for ...

PROPELLER FAN, BLOWER DEVICE, AND OUTDOOR EQUIPMENT

A propeller fan, including: a boss; and a plurality of blades, each of the plurality of blades including a pressure surface and a suction surface, in which: when a connecting portion between the pressure surface and a side surface of the boss is defined as a pressure surface-side boundary portion, and a connecting portion between the suction surface and the side surface of the boss is defined as a suction surface-side boundary portion, a curvature of the suction surface-side boundary portion is smaller than a curvature of the pressure surface-side boundary portion; and as a blade area projected on a plane orthogonal to the rotation axis, a blade area of the suction surface is larger than a blade area of the pressure surface. 1. A propeller fan , comprising:a boss provided so as to be rotatable about a rotation axis; anda plurality of blades formed along a side surface of the boss,each of the plurality of blades comprising a pressure surface and a suction surface, wherein:when a connecting portion between the pressure surface of the each of the blades and the side surface of the boss is defined as a pressure surface-side boundary portion, and a connecting portion between the suction surface of the each of the blades and the side surface of the boss is defined as a suction surface-side boundary portion, a curvature of the suction surface-side boundary portion is smaller than a curvature of the pressure surface-side boundary portion; andas a blade area projected on a plane orthogonal to the rotation axis, a blade area of the suction surface is larger than a blade area of the pressure surface.2. The propeller fan according to claim 1 , wherein a radius of a leading end portion of the suction surface-side boundary portion is smaller than a radius of a leading end portion of the pressure surface-side boundary portion.3. The propeller fan according to claim 1 , wherein a radius of a trailing end portion of the suction surface-side boundary portion is larger than the radius ...

CENTRIFUGAL FAN

A centrifugal fan includes: an impeller; an upper casing that is disposed above the impeller; a lower casing that is disposed below the impeller; an outlet port that is provided between the upper casing and the lower casing and from which an air suctioned by rotation of the impeller is discharged, wherein the upper casing is provided with a flange that protrudes in an outer radial direction of the impeller from an outer circumferential edge of the upper casing, and wherein the flange partially covers the outlet port when viewed from a direction perpendicular to a rotation axis of the impeller. 1. A centrifugal fan comprising:an impeller;an upper casing that is disposed above the impeller;a lower casing, that is disposed below the impeller;an outlet port that is provided between the upper casing and the lower casing and from which an air suctioned by rotation of the impeller is discharged,wherein the upper casing is provided with a flange that protrudes in an outer radial direction of the impeller from an outer circumferential edge of the upper casing, andwherein the flange partially covers the outlet port when viewed from a direction perpendicular to a rotation axis of the impeller.2. The centrifugal fan according to claim 1 ,wherein the flange is formed by integral molding with the upper casing.3. The centrifugal fan according to claim 1 ,wherein the flange is provided with a plurality of protruding streaks that protrude in a direction along the rotation axis of the impeller from a surface of the flange facing the lower casing.4. The centrifugal fan according to claim 3 ,wherein lengths of the protruding streaks in the radial direction of the impeller are set in accordance with a length of the flange protruding from the outer circumferential edge of the lower casing at positions at which the protruding streaks are provided.5. The centrifugal fan according to claim 1 ,wherein the impeller is provided with a hub, a plurality of blades, and an annular shroud,wherein ...

FAN

A blower fan includes a lower plate portion made of a material having a thermal conductivity of 1.0 W/(m·K) or more, and a side wall portion made of a material having a thermal conductivity of 1.0 W/(m·K) or more. An upper plate portion arranged to cover an upper side of the impeller includes an air inlet. The upper plate portion, the side wall portion, and the lower plate portion are arranged to together define an air outlet on the lateral side of the impeller. The blower fan further includes a heat source contact portion with which a heat source is to be in contact, the heat source contact portion being arranged in a surface of the blower fan which faces away from the impeller. The heat source contact portion and the tongue portion are arranged to at least partially overlap with each other in the plan view. 1. A blower fan comprising:an impeller including a plurality of blades arranged to rotate about a central axis extending in a vertical direction and arranged in a circumferential direction, and a blade support portion arranged to support the blades;a motor portion arranged to rotate the impeller; anda housing arranged to contain the impeller; wherein a lower plate portion arranged to cover a lower side of the impeller, arranged to support the motor portion, and made of a material having a thermal conductivity of 1.0 W/(m·K) or more; and', 'a side wall portion arranged to cover a lateral side of the impeller, connected with the lower plate portion, and made of a material having a thermal conductivity of 1.0 W/(m·K) or more;, 'the housing includesa channel joining a space above the impeller and a space between the impeller and the lower plate portion to each other in an axial direction is defined between adjacent ones of the blades of the impeller;an upper plate portion arranged to cover an upper side of the impeller includes an air inlet;the upper plate portion, the side wall portion, and the lower plate portion are arranged to together define an air outlet on ...

COOLING FAN WITH MOVING BAFFLE

A cooling fan includes a frame base including a frame wall, a bottom plate and a cover plate for enclosing and defining a containing space. The vane wheel is installed in the containing space and provided for producing a cooling forced airflow when the vane wheel is in a forward rotation status and forming a strong wind area, and producing a dust discharging forced airflow when the vane wheel is in a reverse rotation status. The moving baffle module is rotably installed in the strong wind area, and the frame base includes a dust discharging opening configured to be corresponsive to the periphery of the strong wind area, and the dust discharging forced airflow is affected by the moving baffle module to discharge dust from the dust discharging opening to the outside. 1. A cooling fan with a moving baffle , provided for discharging dust in the cooling fan , comprising:a frame base, including a frame wall, combined to a bottom plate and a cover plate which are disposed on upper and lower sides of the frame wall respectively, and a containing space enclosed and defined by the frame wall, the bottom plate and the cover plate;a vane wheel, installed in the containing space, and provided for producing a cooling forced airflow when the vane wheel is in a forward rotation status and forming a strong wind area, and producing a dust discharging forced airflow when the vane wheel is in a reverse rotation status; anda moving baffle module, rotably installed in the strong wind area; and the frame base having at least one dust discharging opening configured to be corresponsive to the periphery of the strong wind area, and the dust discharging forced airflow being affected by the moving baffle module to discharge the dust from the dust discharging opening to the outside.2. The cooling fan with a moving baffle as claimed in claim 1 , wherein the moving baffle module comprises a shaft claim 1 , and a baffle axially installed to the shaft and driven by the dust discharging forced ...

Centrifugal Fan

There is provided a centrifugal fan capable of minimizing variations of the vent flow amount of the gas in the direction of the height of the vent. 1. A centrifugal fan , comprising:a housing including an intake port; andan impeller arranged inside the housing, including a base part and a plurality of vanes, whereinthe intake port takes in gas on one end portion side in the rotary axis direction,a face of the base part on a side of the intake port comprises a gradient face inclined toward a rotary shaft and the intake port,the plurality of vanes are provided at the gradient face, andthe width of the vanes in the radial direction is increased from the intake port side toward the gradient face.2. The centrifugal fan according to claim 1 , whereinthe ratio H/W is equal to or larger than 0.55, whereinH [mm] is a length of the impeller in the rotary axis direction and,W [mm] is a length of the impeller in the radial direction.3. The centrifugal fan according to claim 1 , whereinthe length of the impeller in the radial direction is from 30 mm to 110 mm.4. The centrifugal fan according to claim 1 , whereinD2 is equal to or smaller than D1×0.9, whereinD1 [mm] is a distance of the inner shape of the inside of the plurality of vanes on the intake port side and,D2 [mm] is a distance of the inner shape of the inside of the plurality of vanes on the base part side.5. The centrifugal fan according to claim 4 , whereinthe distance D2 [mm] is equal to or larger than the distance D1×0.4 [mm].6. The centrifugal fan according to claim 1 , whereinthe height of the top portion of the gradient face is smaller than a height of the center of the impeller.7. The centrifugal fan according to claim 1 , whereinthe vanes have an identical curvature radius in the rotary axis direction andthe inner end portion of the vane extends consecutively from the intake port side to the base part side in the radial direction.8. The centrifugal fan according to claim 1 , whereinthe impeller has a ring part ...

FAN ASSEMBLY

A fan assembly () includes a housing () with an air inlet (), a fan inlet (), and an air outlet (). The fan assembly further includes an impeller () and a motor () configured to drive the impeller, the impeller having a plurality of circumferentially positioned spaced blades (). An air-permeable guard () is positioned between the air inlet and the fan inlet to prevent users from touching the impeller (), and is spaced a first distance () from the fan inlet (), and a second distance from the air inlet () so that a filter () may be provided between the air inlet () and the air-permeable guard (). Preferably, the first distance () is such so as to allow incoming air to at least partially rotate prior to entering the fan inlet. Preferably, the plurality of circumferentially positioned spaced blades () is positioned circumferentially around a domed center () of the impeller (), the domed center () facing the fan inlet (), and the domed center () co-rotates with the spaced blades (). 1. A fan assembly comprising:a housing comprising an air inlet, a fan inlet, and an air outlet;an impeller between the fan inlet and the air outlet the impeller comprising a plurality of circumferentially positioned spaced blades;a motor configured to drive the impeller;an air-permeable guard positioned between the air inlet and the fan inlet to prevent users from touching the impeller, wherein the air-permeable guard is spaced a first distance from the fan inlet, and a second distance from the air inlet, the air-permeable guard having a larger cross-sectional area than a cross-sectional area of the fan inlet, anda filter between the air inlet and the air-permeable guard, the filter having a larger cross-sectional area than the cross-sectional area of the fan inlet,wherein an air flow path between the filter and the fan inlet has a substantially same cross-sectional area that is larger than the cross-sectional area of the fan inlet over a distance that is a least 15 mm.2. The fan assembly of ...

Centrifugal Fan

A centrifugal fan is formed from an impeller installed within a casing. The impeller is formed from two plates that are interconnected by a plurality of blades. A duct extends through each blade. At each of its ends, the duct opens at one of the plates. Air enters the fan from through a central opening formed in one of the plates, moves to a medial zone between the plates, and exits the fan at the medial zone's unwalled periphery. Air also crosses the fan by way of the ducts formed within each blade. 1. An impeller having a rotational axis , comprising:a first plate having a central opening and a plurality of duct openings;a second plate having a central hub and a plurality of duct openings; and 'an open-ended duct formed within the blade and interconnecting one and only one duct opening in the first plate with one and only one duct opening in the second plate.', 'a plurality of blades interconnecting the first and second plates and circumferentially spaced around the rotational axis, each blade comprising2. The impeller of in which the central opening communicates with a medial zone between the plates having no peripheral wall; and in which the impeller defines mutually exclusive fluid path segments claim 1 , comprising:a first fluid path segment that includes the central opening and the medial zone; andone or more second fluid path segments, each of which includes at least one of the ducts.3. The impeller of in which the first and one or more second path segments are arranged in a heat-transferring relationship.4. The impeller of in which the first plate and the plurality of blades are formed as a single piece.5. The impeller of in which the first plate comprises a funnel-shaped structure that tapers toward the second plate.6. The impeller of in which each of the plurality of blades have a concave first external surface and an opposed convex second external surface.7. The impeller of in which the concave first external surface leads as the impeller rotates.8. The ...

FAN HOUSING WITH METAL FOAM AND FAN HAVING THE FAN HOUSING

A fan has a fan housing and an impeller mounted in the fan housing. The fan housing has a main case, and a foamed metal plate securely mounted in an air inlet of the main case. Hot air inhaled into the main case is forced to flow through pores in the foamed metal plate. Thus, heat in the hot air is conducted to the foamed metal plate and then to the main case. The heat in the hot air is dissipated to reduce temperature of the hot air in advance. Accordingly, heat dissipation efficiency of the fan is improved. Since the foamed metal plate hinders flow of the hot air, the hot air flowing into the main case is reduced. Therefore, air pressure and flowing speed of the hot air flowing into the main case is reduced, such that noise made by the fan is also reduced. 1. A fan housing having:a main case having an air inlet formed through the main case; anda foamed metal plate being porous structured, mounted in the air inlet of the main case, and securely attached to the main case.2. The fan housing as claimed in claim 1 , wherein the foamed metal plate covers part of the air inlet of the main case.3. The fan housing as claimed in claim 2 , wherein the foamed metal plate is annular.4. The fan housing as claimed in claim 1 , wherein the foamed metal plate covers the air inlet of the main case completely.5. The fan housing as claimed in claim 4 , wherein the foamed metal plate corresponds in shape and size to the air inlet of the main case.6. The fan housing as claimed in claim 1 , wherein the foamed metal plate is made of aluminum claim 1 , nickel claim 1 , cooper claim 1 , or alloys thereof.7. The fan housing as claimed in claim 1 , wherein the main case is made of metal.8. The fan housing as claimed in claim 1 , wherein an outer peripheral edge of the foamed metal plate is securely attached to an outer surface of the main case.9. The fan housing as claimed in claim 1 , wherein an outer peripheral edge of the foamed metal plate is securely attached to a hole edge defined ...

Fan Device and Electronic Device Thereof

A fan device and an electronic device thereof are disclosed. The fan device is disposed in a casing of the electronic device and adjacent to a board of the casing, wherein the board has a first state and a second state. The fan device includes a plurality of fan blades, a shaft, and a ball. The shaft is connected to the plurality of fan blades and allows the plurality of fan blades rotating with the shaft, wherein at least one end of the shaft has a ball accommodating portion and an opening. The ball is disposed in the ball accommodating portion and limited by the opening for not separate from the ball accommodating portion. When the board is in the first state, a gap is between the ball and the casing. When the board is in the second state, the board and the ball touch each other. 1. A fan device , disposed in a casing of an electronic device and adjacent to a board of the casing , wherein the board has a first state indicating not being applied force and a second state indicating being applied forced , the fan device comprising:a plurality of fan blades;a shaft, connected to the plurality of fan blades and allowing the plurality of fan blades rotating with the shaft, wherein at least one end of the shaft has a ball accommodating portion and an opening communicating with the ball accommodating portion; anda ball, disposed in the ball accommodating portion and limited by the opening for not separating from the ball accommodating portion;wherein when the board is in the first state, a gap is between the ball and the board;when the board is in the second state, the board and the ball touch each other.2. The fan device as claimed in claim 1 , wherein the shaft has two ends claim 1 , and the ball accommodating portion and the opening are only disposed on one end which is near the board.3. The fan device as claimed in claim 1 , wherein a diameter of the opening is smaller than a diameter of the ball.4. The fan device as claimed in claim 1 , wherein the ball accommodating ...

VERTICAL TOWER FANVERTICAL TOWER FAN AND METHOD FOR QUICKLY ASSEMBLYING AND DISASSEMBLYING THE SAME

A vertical tower fan may include a control unit, a fan unit having a shaft, a shell assembly and a main body. A securing unit supporting by a number of resilient units is disposed underneath the control unit. When the user wants to remove the fan unit from the fan, he/she can simply lift the securing unit, and the top portion of the shaft can be separated from the securing unit. Meanwhile, the bottom portion of the shaft can be removed from a protrusion, so the entire fan unit can be separated from the fan for cleaning or repairing without using any tools, 1. A vertical tower fan comprising:a fan unit having a shaft extending from a top portion thereof;a main body having a receiving space to receive the fan unit; anda shell assembly that includes a front cover and rear cover,wherein a securing unit is disposed at a top portion of the receiving space to secure a top portion of the fan unit, and a fan receiving hole is formed at a bottom portion of the fan unit to receive a protrusion at a bottom portion of the receiving space, so the fan unit is secured on both the top and bottom portions in the receiving space.2. The vertical tower fan of claim 1 , wherein the front cover and rear cover are disposed on a front surface and rear surface of the fan in a “snap-in” manner claim 1 , so they are easily to be put on the fan and removed therefrom.3. The vertical tower fan of claim 1 , further comprising a control unit having a control panel located on an upper portion of the vertical tower fan in order to control the speed or rotation of the fan unit.4. The vertical tower fan of claim 1 , wherein the securing unit is supported by one or more resilient units claim 1 , so the securing unit is configured to move vertically from one position to another position within a predetermined distance underneath the control unit claim 1 , and the top portion of the shaft is secured in the receiving space by inserting the shaft into a receiving hole of the securing unit when the securing ...

Automatic Fan Inlet Closure Apparatus and Methods

Embodiments of the inventive technology may include an automatically reconfigurable flow blocking damper to prevent back flow; applications include, e.g., centrifugal fans that may at times be susceptible to such back flow, such as centrifugal fans established in an array and discharging to a common space. A clutch may effect damper engagement with rotatable componentry such that the damper is engaged with rotatable componentry when the damper is in open configuration, and effect damper disengagement from rotatable componentry such that the damper is disengaged from rotatable componentry when the damper is in closed configuration. The clutch may, in particular embodiments, act to prevent rotational imbalance problems otherwise observed when the damper is engaged to and rotates with rotatable componentry. 1. A centrifugal fan comprising:stationary fan inlet componentry that defines an opening through which fluid enters said centrifugal fan;rotatable componentry established downstream of said stationary fan inlet componentry, wherein said rotatable componentry rotates about a fan axis in response to an applied torque, said rotatable componentry comprising blades that impel said fluid;an axially translatable flowpath closure damper that axially translates along said fan axis and that is reconfigurable from a closed configuration to an open configuration;a damper support that supports said axially translatable flowpath closure damper so that it can axially translate along said fan axis; anda clutch that engages said axially translatable flowpath closure damper to said rotatable componentry so that, when said axially translatable flowpath closure damper is in said open configuration, said axially translatable flowpath closure damper is engaged to and co-rotates with said rotatable componentry.2. A centrifugal fan as described in wherein at least part of said clutch is housed within said damper support.3. A centrifugal fan as described in further comprising a fan housing. ...

CENTRIFUGAL FAN

A centrifugal fan includes: a casing including an upper casing, a lower casing, and struts disposed between the upper casing and the lower casing; and an impeller that is provided in the casing, the impeller having an annular shroud, a plurality of blades, and a main plate, wherein the main plate of the impeller has an inclined surface between an inner circumference side and an outer circumference side of the impeller, and wherein the inner circumference side of the impeller is located at an upward position in an axial direction of the impeller, and the outer circumference side of the impeller is located at an downward position in the axial direction of the impeller. 1. A centrifugal fan comprising:a casing including an upper casing, a lower casing, and struts disposed between the upper casing and the lower casing; andan impeller that is provided in the casing, the impeller having an annular shroud, a plurality of blades, and a main plate,wherein the main plate of the impeller has an inclined surface between an inner circumference side and an outer circumference side of the impeller, andwherein the inner circumference side of the impeller is located at an upward position in an axial direction of the impeller, and the outer circumference side of the impeller is located at an downward position in the axial direction of the impeller.2. The centrifugal fan according to claim 1 ,wherein the lower casing comprises a motor base and a base plate, andwherein the upper casing and the base plate have a larger outer diameter than the impeller.3. The centrifugal fan according to claim 2 ,wherein a lower surface of an outer circumferential end of the upper casing has a cross section having a curved surface protruding toward an upper surface side of the upper casing, andwherein an upper surface of an outer circumferential end of the base plate of the lower casing has a cross section having a curved surface protruding toward the upper surface side of the upper casing. 1. Field of ...

DIAGONAL FAN HAVING AN OPTIMIZED HOUSING

A diagonal fan having an electric motor, a housing and a diagonal impeller generating a diagonal flow which is deflected into an axial flow direction. The diagonal impeller has impeller blades, an air inlet and an air outlet, wherein the housing forms a flow channel for an airflow generated by the diagonal impeller, which has a non-rotationally symmetric axial section and a cylindrical axial section axially directly adjacent, as seen in the flow direction, wherein an air outlet-side radial outer end of the diagonal impeller is arranged in the cylindrical axial section of the flow channel of the housing and an air gap is provided between the radial outer end and the housing, and wherein the non-rotationally symmetric axial section of the flow channel is arranged in a region of the flow channel which is adjacent to the air-inlet side of the air gap in an axial plane with the diagonal impeller. 1. A diagonal fan comprising an electric motor , a housing and a diagonal impeller received within the housing and operable via the electric motor , the diagonal flow generated during the operation of which diagonal impeller is deflected into an axial flow direction ,wherein the diagonal impeller has impeller blades distributed in the circumferential direction as well as an air inlet and an air outlet,wherein the housing forms a flow channel for an airflow generated by the diagonal impeller, the flow channel having a non-rotationally symmetric axial section and a cylindrical axial section axially directly adjacent to the non-rotationally symmetric axial section, as seen in the flow direction,wherein a radial outer end of the diagonal impeller at an air outlet-side is arranged in the cylindrical axial section of the flow channel of the housing and an air gap (S) is provided between the radial outer end and the housing, andwherein the non-rotationally symmetric axial section of the flow channel is arranged in a region of the flow channel which is adjacent to an air-inlet side of ...

FAN

A fan includes a casing and a fan blade. The casing has at least one air inlet and an air outlet. The fan blade is disposed in the casing. An air flow compression area is defined in the casing. An auxiliary air inlet is disposed on the casing at the air flow compression area. Furthermore, another fan includes a casing and a fan blade. The casing has an upper casing, a lower casing and a side casing located between the upper casing and the lower casing. The upper casing or the lower casing has at least one air inlet, and the side casing has an air outlet. The fan blade is disposed in the casing. An internal space of the casing is defined as an air flow compression area. An auxiliary air inlet is disposed on the casing at the air flow compression area. 1. A fan , comprising:a casing having at least one air inlet and an air outlet; anda fan blade disposed in the casing, wherein an air flow compression area is defined in the casing, an air flow pressure in the air flow compression area is lower than the atmospheric pressure outside the casing, and the casing has an auxiliary air inlet disposed at the air flow compression area.2. The fan according to claim 1 , wherein the casing comprises an upper casing claim 1 , a lower casing claim 1 , and a side casing located between the upper casing and the lower casing claim 1 , the upper casing and the lower casing respectively have the air inlet claim 1 , and the air outlet is located at the side casing.3. The fan according to claim 1 , wherein the casing comprises an upper casing claim 1 , a lower casing claim 1 , and a side casing located between the upper casing and the lower casing; a first point is defined at a position of the side casing which is closest to an axle center of the fan blade claim 1 , a second point is defined at a position of the side casing which is farthest from the air outlet; a connecting line from the first point to the axle center of the fan blade and a connecting line from the second point to the axle ...

FAN ASSEMBLY FOR DISPLAYING AN IMAGE

Apparatus and methods for displaying an image by a rotating structure are provided. The rotating structure can comprise blades of a fan. The fan can be a cooling fan for an electronics device such as an augmented reality display. In some embodiments, the rotating structure comprises light sources that emit light to generate the image. The light sources can comprises light-field emitters. In other embodiments, the rotating structure is illuminated by an external (e.g., non-rotating) light source. 167.-. (canceled)68. A display apparatus for displaying a representation of an image , the display apparatus comprising:a rotatable structure;a motor configured to rotate the rotatable structure;a plurality of light sources positioned relative to the rotatable structure so as to direct light toward the rotatable structure;a non-transitory memory configured to store image data to be displayed by the display apparatus, the image data comprising one or more views of the image at a viewing direction; and drive the motor to rotate the rotatable structure about a rotation axis, the rotatable structure positioned at a rotation angle as a function of time,', 'access the image data,', 'map the image data to the plurality of light sources based at least in part on the rotation angle, and', 'illuminate the plurality of light sources based at least in part on the mapped image data., 'a processor operably coupled to the non-transitory memory, the motor, and the plurality of light sources, the processor comprising executable instructions to69. The apparatus of claim 68 , wherein the rotatable structure comprises a fan assembly.70. The apparatus of claim 69 , wherein the rotatable structure is included in at least one of a desk fan claim 69 , a ceiling fan claim 69 , a household fan claim 69 , a propeller on an aerial vehicle claim 69 , an engine turbine claim 69 , an electric cooling fan claim 69 , a computer fan claim 69 , a cooling fan for an electronic device claim 69 , or a ...

Centrifugal blower, air-blowing apparatus, air-conditioning apparatus, and refrigeration cycle apparatus

A centrifugal air blower comprises a fan; and a scroll casing. The scroll casing includes: a sidewall covering the fan from an axial direction of a rotation axis on which the fan rotates, the side wall having a suction opening for sucking air; a discharge opening for discharging an airflow generated by the fan; a tongue portion for guiding the airflow to the discharge opening; a peripheral wall surrounding the fan from a radial direction of the rotation axis; and a bell mouth formed along the suction opening of the sidewall. The bell mouth includes an upstream end and a downstream end, the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening, the downstream end being an end portion on a downstream side in the direction of flow of the air.

FAN

A fan includes a cylindrical impeller, and a casing including a first side plate, a second side plate and an outer plate. In each of the first side plate and the second side plate, parts respectively corresponding to starting end and terminal end sides of the spiral ventilation passage, and a section corresponding to a connecting ventilation passage extending from a terminal end portion of the spiral ventilation passage in a rotating direction of the impeller and connected to a starting end portion of the spiral ventilation passage form a smooth surface by: connecting flat planes having a certain height; connecting inclined planes having a height gradually changed; or connecting a flat plane and an inclined plane; and a dimension of the spiral ventilation passage in the rotation axis direction of the impeller gradually decreases from the starting end portion and the terminal end portion to a predetermined position. 1. A fan comprising:a cylindrical impeller; anda casing configured to accommodate the impeller, and including a spiral ventilation passage formed radially outside the impeller, a first side plate provided on a first end side of a rotation axis direction of the impeller;', 'a second side plate provided on a second end side of the rotation axis direction of the impeller, and including an air suction port; and', 'an outer plate provided radially outside the impeller, wherein:, 'the casing includingin each of the first side plate and the second side plate, parts respectively corresponding to a starting end side and a terminal end side of the spiral ventilation passage, and a section corresponding to a connecting ventilation passage which extends from a terminal end portion of the spiral ventilation passage in a rotating direction of the impeller and is connected to a starting end portion of the spiral ventilation passage form a smooth surface by at least one of: connecting flat planes having a certain height; connecting inclined planes having a height ...

VENTILATION SYSTEM AND METHOD

Embodiments of the invention provide a ventilation assembly including a scroll assembly that can include a blower assembly including a motor coupled to a blower wheel. Some embodiments include a discharge grid capable of being coupled to the scroll using a coupling pin or snap tabs. In some embodiments, the discharge grid includes a plurality of vertical and horizontal fins, and an outlet restriction. In some embodiments, at least one of the plurality of horizontal fins extends from the outlet restriction to couple with at least one vertical fin to form an aperture. In other embodiments, at least a portion of at least one of the plurality of vertical and horizontal fins includes a flared surface. Some embodiments include a scroll assembly that includes a scroll crescent. In some embodiments, a scroll including a discharge grid and scroll crescent can at least partially guide a fluid within the ventilation assembly. 1. A ventilation assembly including a discharge grid , the discharge grid comprising:an outlet restriction, the outlet restriction comprising a restriction wall including an inner surface and a first edge and a second edge; anda main wall coupled to the first edge and the inner surface, the main wall including a first end and a second end and first and second surfaces; anda plurality of substantially vertical fins, the plurality of vertical fins including a first substantially vertical fin including a top edge and a bottom edge, the bottom edge of the first substantially vertical fin coupled to the restriction wall at the second edge and the inner surface;a plurality of substantially horizontal fins, the plurality of substantially horizontal fins coupled to the second surface of the main wall and the inner surface of the restriction wall and the first substantially vertical fin; andwherein at least one of the plurality of substantially horizontal fins extends from the outlet restriction to couple with at least one other substantially vertical fin and form ...

Airflow System With Fan Spacer For Work Vehicles

An airflow system that has a fan spacer within a fan assembly is provided for use with equipment such as work vehicles, which may include agricultural implements or other agricultural equipment. The fan spacer influences a width dimension of a fan housing interior and airflow characteristics of the fan assembly, such as output pressure and flow rate, to optimize fan performance for a particular implementation. In this way, the fan spacer allows for highly customizable fan performances by using housing spacers to modify fan housing dimensions and provide performance characteristics that correspond to what is needed for particular implementations while using common fan housing segments. 1. An airflow system of a work vehicle , the airflow system comprising:an air-assisted product delivery and/or cleaning system; a fan drive;', 'an impeller driven to rotate by the fan drive;', an inlet for directing air into the fan housing interior as pulled into the fan housing interior by rotation of the impeller;', 'an outlet for directing air out of the fan housing interior as pushed out of the fan housing interior by rotation of the impeller;', wherein a first fan housing segment of the at least first and second housing segments overlies a first portion of the impeller;', 'wherein a second fan housing segment of the at least first and second housing segments overlies a second portion of the impeller; and, 'at least first and second housing segments;'}, 'at least one fan spacer arranged between respective ones of the at least first and second housing segments for influencing a width dimension of the fan housing interior and airflow characteristics of the fan assembly., 'a fan housing that surrounds a space inside of the fan housing to define a fan housing interior with the impeller arranged for rotation within the fan housing interior, the fan housing including], 'a fan system configured to provide an airflow to the air-assisted product delivery and/or cleaning system; the fan ...

FAN ASSEMBLY FOR DISPLAYING AN IMAGE

Apparatus and methods for displaying an image by a rotating structure are provided. The rotating structure can comprise blades of a fan. The fan can be a cooling fan for an electronics device such as an augmented reality display. In some embodiments, the rotating structure comprises light sources that emit light to generate the image. The light sources can comprises light-field emitters. In other embodiments, the rotating structure is illuminated by an external (e.g., non-rotating) light source. 1. A fan assembly for displaying a representation of an image , the fan assembly comprising:a plurality of fan blades;a motor configured to rotate the plurality of fan blades to induce an airflow;a plurality of light sources disposed on at least one of the plurality of fan blades;a non-transitory memory configured to store image data to be displayed by the fan assembly, the image data comprising one or more views of the image at a viewing direction; and drive the motor to rotate the plurality of fan blades about a rotation axis, the plurality of fan blades positioned at a rotation angle as a function of time,', 'access the image data,', 'map the image data to each of the plurality of light sources based at least in part on the rotation angle, and', 'illuminate the plurality of light sources based at least in part on the mapped image data., 'a processor operably coupled to the non-transitory memory, the motor, and the plurality of light sources, the processor comprising executable instructions to2. The fan assembly of claim 1 , wherein the image data is representative of a light field image claim 1 , the light field image configured to provide a plurality of different views of the image at different viewing directions.3. The fan assembly of claim 1 , wherein the plurality of light sources comprise at least one of a light field sub-display claim 1 , a liquid crystal claim 1 , a light emitting diode (LED) claim 1 , an organic LED claim 1 , or a laser.4. The fan assembly of ...

AIR BLOWER, ION TRANSMITTING DEVICE, ELECTRICAL APPLIANCE, AND REMOTE CONTROL HOLDING STRUCTURE

An inlet port and an outlet port which are open in a body housing , an air-blowing pathway disposed inside the body housing , making the inlet port and the outlet port communicate with each other, and also having a plurality of divisional pathways obtained by division with partition plates , an air-blowing fan disposed upstream from the divisional pathways inside the air-blowing pathway , a removable inner cover covering the divisional pathways and having an inner surface which forms a side wall of the air-blowing pathway , and a removable exterior cover covering the inner cover to form an outer surface of the body housing are provided, and the inner cover has marking portions formed on an outer surface along the partition plates 1. An air blower comprising a body housing having an inlet port and an outlet port which are open; an air-blowing duct disposed inside the body housing , making the inlet port and the outlet port communicate with each other , and also having a plurality of divisional pathways obtained by division with partition plates; an air-blowing fan disposed upstream from the divisional pathways inside the air-blowing duct; a removable inner cover covering the divisional pathways and having an inner surface which forms a side wall of the air-blowing duct; and a removable exterior cover covering the inner cover to form an outer surface of the body housing;wherein the inner cover has marking portions formed on an outer surface along the partition plates.2. The air blower according to claim 1 ,wherein the inlet port is provided in a lower part of the body housing and the outlet port is provided in a front surface of the body housing above the inlet port, and the partition plates have a lower part extending in a vertical direction and an upper part curved toward the outlet port.3. The air blower according to or claim 1 ,wherein fitting grooves fitting in the partition plates are provided in the inner surface of the inner cover, and rear surfaces of the ...

Fan

A blower fan according to a preferred embodiment of the present invention is a centrifugal fan. At least a portion of each of a plurality of blades of an impeller portion is arranged above a stator. A lower plate portion is arranged to define an air channel portion and an air outlet arranged on a lateral side of the impeller portion when a side wall portion arranged to surround an outer circumference of the impeller portion and an upper plate portion arranged above the impeller portion are present. The air channel portion is arranged to extend in a circumferential direction between an outer circumference of the stator and the side wall portion. At least a portion of a circuit board is arranged in the air channel portion and on the lower plate portion. A plurality of lead wires extending from the stator are connected to the circuit board in the air channel portion.

BED VENTILATORS AND METHODS OF USE

An apparatus has a bed with bedding; an air mover; and an air outlet defined by the air mover to direct air into a sleep zone of the bed. A method includes operating an air mover to direct air into a sleep zone defined between a bed and bedding. 1. An apparatus comprising:a bed with bedding;an air mover; andan air outlet defined by the air mover to direct air into a sleep zone of the bed.2. The apparatus of in which the air outlet is oriented to direct air into contact with bedding above the air mover to form a bedding air conduit into the sleep zone of the bed.3. The apparatus of in which:the bedding air conduit extends up along a side of the bed;the air mover is mounted to a side of the bed above a floor surface; adjacent stacked mattresses; or', 'between a mattress and a bed frame; and, 'the air mover is mounted to the side of the bed via a bed mount that extends laterally between a horizontal cantilever plate or horizontal cantilever bar; or', 'a part that hooks onto an upstanding wall of the bed frame., 'the bed mount comprises49-. (canceled)10. The apparatus of in which the air mover further comprises a bedding support that props up bedding above the air mover.1117-. (canceled)18. The apparatus of :further comprising a controller connected to send control signals to the air mover; andfurther comprising one or more of a motion sensor and a temperature sensor, in which the controller is connected to send control signals to the air mover based on signals from the one or more of a motion sensor and a temperature sensor.1920-. (canceled)21. The apparatus of :further comprising a motion sensor; detect a sleeping mode where a user is within the sleep zone between the bedding and the bed; and', 'detect a non-sleeping mode where a user is on the bedding and outside the sleep zone; and, 'in which the controller is programmed to use signals from the motion sensor to when the sleeping mode is detected, maintain the air mover in, or initiate the air mover to enter, an ...

BLOWER

A blower includes a housing including an inlet and an outlet, a motor to drive a rotatable shaft, first and second impellers provided to the shaft, the first and second impellers each including a plurality of impeller blades, a first stationary component provided to the housing and including stator vanes downstream of the first impeller, and a second stationary component provided to the housing and including stator vanes downstream of the second impeller. A first set of stator vanes of the first stationary component is provided around the motor and are configured and arranged to direct airflow along the motor, to de-swirl the airflow and to decelerate air to increase pressure. A blower including a third impeller and third stationary component positioned above the first impeller is also described. 1. A PAP device , comprising:a casing; anda blower provided within the casing,the casing including at least first and second chambers and a plurality of conduits that allow air to pass from the first chamber to the second chamber, the plurality of conduits arranged to provide acoustic impedance and flow measurement by providing a defined pressure drop.2. A PAP device according to claim 1 , wherein the plurality of conduits includes a plurality of parallel tubes to provide laminar flow.3. A PAP device according to claim 1 , wherein the plurality of conduits includes 5-50 tubes.4. A PAP device according to claim 1 , further comprising a flow plate to support the plurality of conduits between the first and second chambers.5. A PAP device according to claim 1 , wherein the defined pressure drop is about 0-5 cmHO.6. A PAP device according to claim 1 , wherein the first chamber is an inlet chamber to allow ambient air to enter the casing and the second chamber is a blower chamber to receive the blower.7. A PAP device according to claim 6 , further comprising one or more inlet conduits extending at least partially into the inlet chamber.8. A PAP device according to claim 7 , ...

CENTRIFUGAL BLOWER ASSEMBLY AND METHOD FOR ASSEMBLING THE SAME

A centrifugal blower assembly includes a scroll wall, a pair of opposing sidewalls, and a cutoff plate. The scroll wall is positioned between the pair of opposing sidewalls such that the scroll wall and opposing sidewalls together define a blower chamber and a blower outlet. The scroll wall extends circumferentially between a cutoff point to an end point and defines a cutout extending circumferentially from the cutoff point. The scroll wall, the pair of opposing sidewalls, and the cutoff point define a blower outlet, wherein the blower outlet defines a blower outlet area. The cutoff plate extends circumferentially from the end point. The cutoff plate defines a notch defining a notch area, the notch area and the blower outlet area define a total blower outlet area, wherein the notch includes a center portion that defines a portion of an elliptical shape. 1. A centrifugal blower assembly comprising:a scroll wall and a pair of opposing sidewalls, said scroll wall positioned between said pair of opposing sidewalls such that said scroll wall and said pair of opposing sidewalls define a blower chamber, said scroll wall extends circumferentially between a cutoff point to an end point and defines a cutout extending circumferentially from said cutoff point, said scroll wall, said pair of opposing sidewalls, and said cutoff point define a blower outlet, said blower outlet defining a blower outlet area; anda cutoff plate extending circumferentially from said end point, said cutoff plate defines a notch defining a notch area, said notch area and said blower outlet area define a total blower outlet area, wherein said notch includes a center portion that defines a portion of an elliptical shape.2. The centrifugal blower assembly in accordance with claim 1 , wherein said notch includes at least one sloped portion adjacent said center portion.3. The centrifugal blower assembly in accordance with claim 1 , wherein said notch includes two sloped portions each positioned adjacent said ...

BLOWER ATTACHMENT FOR A LAWNMOWER

A blower attachment for a lawnmower. The blower attachment includes an impeller and a shroud that are attachable to the lawnmower deck or undercarriage. The shroud includes a disc-shaped bottom portion defining a reduced-diameter opening. The impeller is centrally positioned over the reduced-diameter opening. Rotation of the impeller draws air through the reduced-diameter opening before being discharged from the lawnmower for the removal of debris from a lawn surface. 1. A blower attachment for a lawnmower comprising:an impeller attachable to the lawnmower, the impeller including a plurality of blades, the impeller defining an outer impeller diameter; anda shroud attachable to the lawnmower, the shroud having a bottom portion below the impeller defining an airflow inlet, the airflow inlet having a diameter less than the outer impeller diameter, wherein air is drawn through the airflow inlet in response to rotation of the impeller for discharge from the lawnmower.2. The blower attachment of wherein the shroud includes a discharge chute.3. The blower attachment of wherein the discharge chute extends generally tangentially from the impeller.4. The blower attachment of wherein the bottom portion of the shroud is disk shaped and wherein the airflow inlet is circular.5. The blower attachment of wherein the bottom portion includes an outer diameter that is greater than twice the airflow inlet diameter.6. The blower attachment of wherein the bottom portion includes an outer diameter that is approximately three times the airflow inlet diameter.7. The blower attachment of wherein the shroud is attachable to the lawnmower housing along a lower periphery of the lawnmower housing.8. A blower assembly for blowing yard debris comprising:a lawnmower having a lawnmower housing and a blade attachment portion; and an impeller removably coupled to the blade attachment portion,', 'a shroud removably coupled to the lawnmower housing, wherein the shroud includes a planar bottom portion ...

FAN HAVING AN IMPELLER INCLUDING A RESIN PORTION AND A METAL PLATE

A fan includes an impeller and a metallic base portion. The base portion is arranged to be in thermal contact with a heat source. The impeller includes a resin portion including a plurality of blades, and a metal plate. In addition, the metal plate includes a flat plate portion arranged below the blades. A lower surface of the flat plate portion and an upper surface of the base portion are arranged axially opposite to each other with a gap intervening therebetween. An axial dimension of the gap is arranged to be 200 □m or less at least at a portion of the gap. Heat of the heat source is transferred to the metal plate through radiation from the base portion. Then, an air current produced by the impeller absorbs the heat from the metal plate. The heat generated from the heat source is thus efficiently discharged to an outside. 1. A fan comprising:a motor arranged to produce a torque centered on a central axis extending;an impeller arranged to rotate through the torque to blow air in a centrifugal direction; a metallic base portion arranged to extend perpendicularly to the central axis below the impeller to support the motor, the impeller rotating with respect to the base portion;', 'a side wall portion arranged to surround the impeller in a circumferential direction radially outside the impeller while partly defining an outlet to discharge the air in the centrifugal direction; and', 'a cover arranged to extend perpendicularly to the central axis above the impeller, the cover including an inlet to take the air inside the for gas;, 'a housing to accommodate the impeller comprisingwherein the impeller includes:a resin portion including a blade support portion directly or indirectly fixed to a rotating portion of the motor, and a plurality of blades arranged radially outside of the blade support portion;a metal plate having a ring shape including an inner part and a flat plate portion provided circumferentially outside the inner part, the metal plate being attached to the ...

THIN COOLING FAN

A thin cooling fan includes a fan shell, a motor, a plurality of blades, and a PCB. The fan shell comprises a base plate and a shell cover which cover to each other to form an inner space. The base plate has a first surface facing toward the inner space and a second surface having a receiving space and opposite to the first surface. The motor is combined in the inner space. The blades are disposed in the inner space and rotated by the motor. The PCB is disposed in the receiving space and flush with the second surface. Thus, the whole thickness of the cooling fan is reduced and the flow channel design in the inner space is not affected. 1. A thin cooling fan , comprising:a fan shell comprising a base plate and a shell cover, wherein the base plate and the shell cover combined with each other to form an inner space and an air channel, wherein the base plate has a first surface facing the inner space and a second surface opposite to the first surface, wherein the second surface has a receiving space comprising a recess zone and a hollow zone, wherein the shell cover extends along the air channel to form a curved surface recessed toward the inner space;a motor installed in the inner space;a plurality of blades disposed in the inner space and driven by the motor; anda printed circuit board (PCB) disposed in the receiving space and flush with the second surface;wherein the shell cover comprises at least one guiding slot and at least one auxiliary inlet disposed in the at least one guiding slot, and the at least one guiding slot slopes from the surface of the shell cover toward the at least one auxiliary inlet which communicates with the air channel.2. The thin cooling fan according to claim 1 , wherein the air channel has an outlet claim 1 , a first pressurization zone claim 1 , and a second pressurization zone communicating with the first pressurization zone claim 1 , the first and the second pressurization zones are located at opposite sides of the inner space claim 1 , ...

FAN MOTOR

The present invention provides a fan motor which includes a housing, a stator disposed inside the housing, a rotor disposed inside the stator, a blade coupled to the rotor and a printed circuit board disposed under the blade, wherein the housing includes an upper housing and a lower housing, wherein a board coupling portion to which the printed circuit board is coupled is disposed concavely formed at a lower outer surface of the lower housing, and the first mounting portion of the printed circuit board is coupled to the board coupling portion, wherein the board coupling portion includes a component hole and the component hole is disposed between an outer circumferential surface of the blade and an inner circumferential surface thereof. Therefore, an advantageous effect that a component having a large height may be mounted within a limited design height. 1. A fan motor comprising:a housing;a stator disposed inside the housing;a rotor disposed inside the stator;a blade coupled to the rotor; anda printed circuit board disposed under the blade,wherein the housing includes an upper housing and a lower housing,wherein a board coupling portion to which the printed circuit board is coupled is disposed concavely formed at a lower outer surface of the lower housing, and the first mounting portion of the printed circuit board is coupled to the board coupling portion,wherein the board coupling portion includes a component hole and the component hole is disposed between an outer circumferential surface of the blade and an inner circumferential surface thereof.2. The fan motor of claim 1 , wherein the printed circuit board includes:a first mounting portion positioned inside a radius of the blade; anda second mounting portion positioned outside the radius of the blade,wherein a component mounted on the first mounting portion is inserted into the component hole.3. The fan motor of claim 2 ,wherein the upper housing including a board cover covering the part to cover the second ...

AIRCRAFT TAIL WITH CROSS-FLOW FAN SYSTEMS

In one aspect, there is provided an aircraft, including a fuselage having a longitudinal axis extending from a front portion through an aft portion; first and second tail members extending from the aft portion; a first cross-flow fan system rotatably mounted to the first tail member; and a second cross-flow fan system rotatably mounted to the second tail member. The first and second cross-flow fan systems are configured to provide a forward thrust vector and an anti-torque vector on the aircraft. The first and second cross-flow fan systems can have a rotational axis oriented generally vertically. In another aspect, there is an aircraft including a fuselage having a front portion and a tail portion; and a cross-flow fan system supported by the tail portion. Embodiments include a cross-flow fan system retrofittable onto an aircraft and methods for retrofitting an aircraft with a cross-flow fan system. 1. An aircraft , comprising:a fuselage having a longitudinal axis extending from a front portion through an aft portion;first and second tail members extending from the aft portion;a first cross-flow fan system rotatably mounted to the first tail member; anda second cross-flow fan system rotatably mounted to the second tail member.2. The aircraft according to claim 1 , wherein the first and second cross-flow fan systems are configured to provide a forward thrust vector on the aircraft.3. The aircraft according to claim 1 , wherein the first and second cross-flow fan systems are configured to provide yaw control for the aircraft.4. The aircraft according to claim 1 , wherein the first and second cross-flow fan systems are configured to provide an anti-torque vector on the aircraft.5. The aircraft according to claim 1 , wherein the first and second cross-flow fan systems are each configured to rotate about a rotational axis.6. The aircraft according to claim 5 , wherein the rotational axis is generally perpendicular to the longitudinal axis of the fuselage.7. The aircraft ...

SINGLE SUCTION CENTRIFUGAL BLOWER

A single suction type centrifugal fan includes a casing, an impeller, and a main plate. The casing includes a side plate and a motor fixing side plate, and the side plate and the motor fixing side plate are arranged in parallel. A rectifying plate is provided between the motor fixing side plate and the main plate, and the rectifying plate is formed from an inclined surface in which an area of a cross section orthogonal to a rotation shaft is reduced toward the impeller around the rotation shaft of a motor. A first rectifying plate diameter at another side of the rectifying plate closer to the impeller is smaller than an impeller diameter of the impeller. 1. A single suction type centrifugal fan comprising:a casing including a scroll;an impeller built in the casing, the impeller having a plurality of blades; anda main plate disposed between a motor and the impeller, and fixed to a rotation shaft of the motor,wherein 'the side plate and the motor fixing side plate are arranged in parallel and the impeller is fixed to the motor,', 'the casing includes a side plate having a suction port, and a motor fixing side plate to which the motor is fixed,'}a rectifying plate surrounding the rotation shaft is provided between the motor fixing side plate and the main plate,the rectifying plate is formed from an inclined surface of which an area in a cross section orthogonal to the rotation shaft decreases toward the impeller around the rotation shaft, anda first rectifying plate diameter at one side of the rectifying plate closer to the impeller is smaller than an impeller diameter of the impeller.2. The single suction type centrifugal fan according to claim 1 , wherein a second rectifying plate diameter at another side of the rectifying plate closer to the motor fixing side plate is same as the impeller diameter.3. The single suction type centrifugal fan according to claim 1 , wherein the main plate has an opening provided within an area confined by the first rectifying plate ...

FAN SHUTTER DEVICE

A fan shutter device includes a frame, multiple slats and multiple sleeves. The frame has a first side and a second side, each of which is formed with multiple assembling channels, multiple fixing holes and multiple displacement slots. Each slat has two extension sections and a connection shaft. Each of two ends of the connection shaft is formed with a connection socket. Each sleeve has a pivot pin and a sleeve section. The pivot pin is assembled and connected in the connection socket. Multiple fixing members are respectively passed through the fixing holes to directly fix the sleeves so that the first and second sides are prevented from deforming in assembling process. The slats are spaced from the frame by a gap without abrading with or interfering with the frame. The extension sections are disposed in the displacement slots, which restrict the rotational angle of the slats. 1. A fan shutter device for assembling with a fan , the fan shutter device comprising:a frame having a first side and a second side, an inlet and an outlet being respectively formed on two faces of the frame, each of the first and second sides being formed with multiple assembling channels, multiple fixing holes and multiple displacement slots;multiple slats disposed between the inlet and the outlet, each slat having a connection shaft on one side, each of two ends of the connection shaft being formed with a connection socket; andmultiple sleeves, each sleeve having a pivot pin and a sleeve section, the pivot pin being assembled and connected in the connection socket, the sleeve sections being positioned in the assembling channels, multiple fixing members being respectively passed through the fixing holes and connected with the sleeve sections.2. The fan shutter device as claimed in claim 1 , wherein a passage is formed between the inlet and the outlet and the slats are disposed in the passage.3. The fan shutter device as claimed in claim 1 , wherein the fixing holes pass through the first and ...

Single or multiple stage blower and nested volute(s) and/or impeller(s) therefor

A double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively. The first volute is connected to an inlet and the second volute is connected to an outlet. The blower motor assembly is supported in a chassis enclosure and a radially outer inter-stage path is between the first and second volute. The second volute is at least partially substantially concentrically nested with the radially outer inter-stage gas path.

Blower

A blower includes a mounting base, a motor, an impeller, and an electronic control unit. The motor is mounted to the mounting base from one direction. The impeller is mounted on the motor. The electronic control unit is mounted on the mounting base from an opposite direction. The mounting base defines a through hole. The through hole is axially aligned with a motor shaft to expose an axial end of the motor shaft opposite from the impeller. The electronic control unit comprises a printed circuit board disposed offset from the through hole. 1. A blower comprising:a mounting base defining a through hole;a motor mounted to an upper side of the mounting base and comprising a motor shaft,an impeller mounted on the motor, the through hole of the mounting base being axially aligned with the motor shaft to expose an axial end of the motor shaft opposite from the impeller; andan electronic control unit mounted to a lower side of the mounting base, the electronic control unit comprising a printed circuit board disposed offset from the through hole of the mounting base.2. The blower of claim 1 , wherein the blower further comprises a heat dissipating device configured to dissipate heat of the electronic control unit.3. The blower of claim 2 , wherein the mounting base defines an air entrance claim 2 , and the heat dissipating device is disposed adjacent the air entrance.4. The blower of claim 3 , wherein the blower further comprises a control box claim 3 , and the electronic control unit and the heat dissipating device are both disposed in the control box.5. The blower of claim 4 , wherein the control box is mounted to the lower side of the mounting base claim 4 , and the control box is disposed offset from the through hole.6. The blower of claim 5 , wherein the electronic control unit is mounted in the control box claim 5 , and is mounted to the mounting base through the control box.7. The blower of claim 4 , wherein the mounting base comprises a mounting plate and an ...

COOLING FAN AND ELECTRONIC DEVICES WITH A COOLING FAN

An electronic device includes a fan assembly that draws air (including heated air) away from components and forces the air out of the electronic device. The fan assembly includes a guide vane located in the fan housing. Subsequent to air entering the fan assembly via the fan inlets, the guide vane is designed to direct the air to a fan outlet. Further, the guide vane is designed and positioned in the fan assembly to limit or prevent flow separation that may cause the heated air to recirculate and may also cause increased turbulence leading to elevated acoustic noise. Furthermore, the guide vane may include a tapered region to allow the heated air to readily flow over the guide vane to limit or prevent a vortex from occurring within the fan assembly. Using the guide vane, the fan assembly drives more air at the same fan speed and lowers noise generation. 1. An electronic device , comprising:an enclosure that defines an internal volume; and a fan housing that defines one or more fan inlets and a fan outlet,', 'an impeller that drives air into the one or more fan inlets, and', 'a guide vane positioned in the fan housing, wherein at least some of the air received by the impeller is directed by the guide vane prior to passing through the fan outlet., 'a fan assembly positioned in the internal volume, the fan assembly comprising2. The electronic device of claim 1 , wherein the fan housing comprises a first housing part and a second housing part coupled with the first housing part.3. The electronic device of claim 2 , wherein the one or more fan inlets comprise a first through hole formed in the first housing part and a second through hole formed in the second housing part claim 2 , and wherein the guide vane extends from the second housing part.4. The electronic device of claim 1 , further comprising:a display secured with the enclosure;a transparent protective cover that overlays the display; anda stand, wherein the enclosure is rotationally coupled with the stand.5. The ...

Volute assembly and induced draft fan comprising the same

A volute assembly includes a volute body, a cover plate, and a seal. The volute body includes a top plate, a side plate protruding axially from an edge of the top plate, a cavity formed by the top plate and the side plate, and an exhaust duct disposed on the side plate and communicating with the cavity. The side plate includes a first bottom edge and a plurality of clamping blocks disposed at intervals on the first bottom edge. The cover plate includes a bottom plate and an annular sleeve surrounding the bottom plate. The annular sleeve includes a second bottom edge and a flange protruding from the second bottom edge. The flange includes a plurality of buckles disposed at intervals. The seal is disposed around the annular sleeve and is supported by the flange. The side plate is matched with the annular sleeve in shape.

FAN BODIES WITH PRESSURE REGULATING CHAMBERS

Examples herein relate to fan bodies with pressure regulating chambers. For instance, in some examples a fan body can define an outlet, an inlet, a fan chamber that is in fluidic communication with the inlet and the outlet, and a hollow pressure regulating chamber having an opening that is in fluidic communication with the fan chamber. 1. A fan body , comprising: 'and', 'a surface defining a fan chamber having volume that extends from an inlet of the fan chamber to an outlet of the fan chamber;'}a hollow pressure regulating chamber extending into the surface defining the fan chamber to provide an additional volume and having an opening to the additional volume of the hollow pressure regulating chamber that is in fluidic communication with the volume of the fan chamber to permit fluid flow between the volume of the fan chamber and the additional volume to regulate a pressure of fluid in the volume of the fan chamber.2. The fan body of claim 1 , wherein the hollow pressure regulating chamber is elongated.3. The fan body of claim 1 , wherein the hollow pressure regulating chamber is in fluidic communication with the fan chamber without any intervening components between the hollow pressure regulating chamber and the fan chamber.4. The fan body of claim 1 , wherein the hollow pressure regulating chamber is concentric to the fan chamber.5. The fan body of claim 1 , wherein the hollow pressure regulating chamber includes an inner surface defining the additional volume of the hollow pressure regulating chamber.6. The fan body of claim 5 , wherein the additional volume of the hollow pressure regulating chamber is less than the volume of the fan chamber.7. A fan comprising: 'and', 'a fan body including a surface defining a fan chamber having volume that extends from an inlet of the fan chamber to an outlet of the fan chambera hollow pressure regulating chamber extending into the surface defining the fan chamber to provide an additional volume in addition to the volume of the ...

CENTRIFUGAL COMPRESSOR FOR A TURBOCHARGER, HAVING SYNERGISTIC PORTED SHROUD AND INLET-ADJUSTMENT MECHANISM

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between a closed position, an open position, and a super-open position. The compressor also includes a ported shroud system. The inlet-adjustment mechanism includes a plurality of blades disposed about the air inlet and movable radially inwardly and outwardly for defining the various positions. In the closed position, the effective diameter of air inlet is reduced and the blades block flow through the ported shroud system. In the open position, the blades still block the ported shroud but the effective inlet diameter is increased relative to the closed position. In the super-open position, the blades unblock the ported shroud so that an additional amount of flow can pass through the ported shroud, thereby shifting the compressor's choke flow line to higher flow rates. 1. A turbocharger , comprising:a turbine housing and a turbine wheel mounted in the turbine housing and connected to a rotatable shaft for rotation therewith, the turbine housing receiving exhaust gas and supplying the exhaust gas to the turbine wheel;a centrifugal compressor assembly comprising a compressor housing and a compressor wheel mounted in the compressor housing and connected to the rotatable shaft for rotation therewith, the compressor wheel having blades and defining an inducer portion, the compressor housing having an air inlet wall defining an air inlet for leading air generally axially into the compressor wheel, the compressor housing further defining a shroud surface that is adjacent to and follows a radially outer contour of the compressor wheel;a compressor inlet-adjustment mechanism disposed in the air inlet of the compressor housing and movable between a closed position and a super-open position, the inlet-adjustment mechanism comprising a plurality of blades that are distributed about a circumference of the air inlet and that collectively form a ...

Fan motor

The present invention provides a fan motor which includes a housing, a stator disposed inside the housing, a rotor disposed inside the stator, a blade coupled to the rotor, and a printed circuit board disposed under the blade, wherein the printed circuit board includes a first mounting portion positioned inside a radius of the blade and a second mounting portion positioned outside the radius of the blade, and in which a component having a large height is mounted on the second mounting portion. Therefore, an advantageous effect that a component having a large height may be mounted within a limited design height.

Low-profile blowers and methods

A blower configured to be positioned in confined spaces and to provide ventilation of a fluid, such as temperature controlled air, is disclosed. In various embodiments, the blower is configured to have a reduced axial thickness, which can be desired in such confined spaces. In some embodiments, the blower has an integral filter, a wire channel for the routing of one or more wires, and/or an exposed backplate. In some embodiments, the blower has a snap-fit circuit board, containment system for mounting the motor, one or more vanes for directing fluid flow, shrouded impeller, and/or integrated connector.

CENTRIFUGAL BLOWER SYSTEM WITH INTERNAL GAS MIXING AND GAS PHASE CHEMICAL REACTOR INCORPORATING SAME

A centrifugal blower system has internal gas mixing capability. 1. A centrifugal blower system comprising:a) a series of blower units, each blower unit in the series comprising a casing having an axial inlet and a radial outlet, an impeller disposed within the casing for drawing a gaseous medium at a first pressure into the axial inlet and expelling gaseous medium at a second higher pressure through the radial outlet and a motor for driving the impeller;b) a duct having a first end connected to the radial outlet of a blower unit in the series, a second end connected to the axial inlet of another blower unit in the series, and a gas flow-confining wall defining an internal gas flow passageway; and,c) a gas flow inlet for admitting a gaseous medium to the gas flow passageway of duct (b), the gas flow inlet being defined in or connected to the gas flow-confining wall of duct (b).2. The centrifugal blower system of wherein inlet (c) is connected to a source of second gaseous medium claim 1 , the second gaseous medium in combination with first gaseous medium expelled from a blower unit whose radial outlet is connected to the first end of duct (b) being capable of forming a reactive and/or explosive mixture claim 1 , the motor driving the impeller of the blower unit the axial inlet of which is connected to the second end of duct (b) being an explosion-resistant or gas-sealed electric motor or an electric motor disposed externally to the housing of the blower unit and connected to the impeller thereof by a shaft.3. The centrifugal blower system of further comprising:d) a controller for controlling the operation of the blower system.4. The centrifugal blower system of further comprising:e) a gaseous medium directing structure which is at least one of (i) the interior surface of the gas flow-confining wall of duct (b) configured to be substantially parallel to the flow of gaseous medium expelled from the radial outlet of a blower unit to which duct (b) is connected, and (ii) ...

LOW-NOISE BLOWER

A low-noise blower that can provide a smooth transition of fluid flow and reduce audible noise, which can disrupt a patient's rest and cause fatigue to patients and caregivers, the blower having an impeller and a housing, the impeller with an impeller plate and a plurality of blades each attached to the impeller plate, and the housing with an impeller cavity and a collector, where a slot with inclined surfaces extends between the impeller cavity and the collector. 1. A blower comprising:an impeller having an impeller plate and a plurality of blades attached to the impeller plate, wherein the impeller plate comprises a top surface, and the plurality of blades comprise a top surface; anda housing comprising a top housing portion and a bottom housing portion, the top housing portion having a slot upper edge with an inclined surface, and the bottom housing portion having a slot lower edge with an inclined surface;wherein the top and bottom housing portions are coupled together to form an impeller cavity, a collector surrounding the impeller cavity, and a slot extending between the impeller cavity and the collector such that a distance between the inclined surfaces of the slot upper edge and the slot lower edge increases from the impeller cavity to the collector; andwherein the impeller is positioned within the cavity with the top surface of the plurality of blades aligned the slot upper edge, and the top surface of the impeller plate aligned with the slot lower edge.2. The blower of claim 1 , wherein each of the slot upper edge and the slot lower edge comprise a radius proximate to the impeller claim 1 , and wherein the top surface of the plurality of blades is aligned with a peak of the upper edge radius claim 1 , and the top surface of the impeller plate is aligned with a peak of the lower edge radius.3. The blower of claim 1 , wherein the inclined surfaces are disposed relative to each other at an angle within a range of 10-40 degrees.4. The blower of claim 1 , ...

FAN ASSEMBLY FOR A DRYER APPLIANCE

A fan assembly for a dryer appliance is provided. The fan assembly includes an inlet duct that fluidly couples a chamber of the dryer appliance to a fan inlet. The inlet duct includes one or more guide vanes that are configured to direct the air in a manner that improves the pressure rise across the fan, thereby improving appliance performance. For example, the guide vanes may be positioned and oriented to generate a negative pre-swirl of the flow of air, such that the flow of air enters the fan inlet rotating in a direction opposite the direction of rotation of an impeller. Additionally, or alternatively, one or more guide vanes may be positioned and oriented to generate a laminar flow of otherwise turbulent air from the chamber of the dryer appliance. 1. A dryer appliance defining a vertical direction , the dryer appliance comprising:a cabinet defining a vent;a drum rotatably mounted within the cabinet, the drum defining a chamber for receipt of articles for drying;a motor; and an impeller, the impeller being in mechanical communication with the motor and rotatable about the axial direction to urge a flow of air from the chamber of the drum to the vent of the cabinet;', 'an inlet duct that extends between and fluidly couples the chamber and a fan inlet;', 'a guide vane positioned within the inlet duct and oriented for directing the flow of air within the inlet duct, the guide vane defining an upstream end proximate the chamber and a downstream end proximate the fan inlet, the downstream end of the guide vane defining a tangent line; and', 'an exhaust duct that extends between and fluidly couples a fan outlet and the vent of the cabinet., 'a fan assembly defining an axial direction, a radial direction, and a circumferential direction, the fan assembly comprising2. The dryer appliance of claim 1 , wherein the impeller comprises a base plate and a plurality of blades claim 1 , the plurality of blades spaced about the base plate along the circumferential direction ...

FAN MODULE AND ELECTRONIC DEVICE USING THE SAME

A fan module and an electronic device using the fan module are provided. The fan module includes a housing, a fan blade assembly, and a fan hub. The housing has a first surface on which plural wind guiding structures are arranged. The fan blade assembly is pivoted to the housing through the fan hub and adapted to rotate along a rotation direction. The wind guiding structures are arranged along a circumferential direction of the fan hub to guide a wind flow into the housing while the fan blade assembly is being rotated. 1. A fan module comprising:a housing having a first surface, and a plurality of wind guiding structures being located on the first surface;a fan blade assembly pivoted to the housing and adapted to rotate along a rotation direction; anda fan hub, the fan blade assembly being pivoted to the housing through the fan hub, wherein the wind guiding structures are arranged along a circumferential direction of the fan hub to guide a wind flow into the housing while the fan blade assembly is being rotated.2. The fan module according to claim 1 , wherein the wind guiding structures are arranged along a circumferential direction and disposed around at least one portion of the fan hub in a radiating manner.3. The fan module according to claim 1 , wherein orthogonal projections of the wind guiding structures on a bottom of the housing are located within an orthogonal projection of the fan blade assembly on the bottom of the housing.4. The fan module according to claim 1 , wherein the first surface has a fan hub opening claim 1 , and the fan hub is located in the fan hub opening.5. The fan module according to claim 4 , wherein a diameter of the fan hub opening is greater than a diameter of the fan hub.6. The fan module according to claim 1 , wherein the wind guiding structures are protruding wind stopping openings claim 1 , and each of the protruding wind stopping openings faces toward an upstream side of the rotation direction.7. The fan module according to claim ...

FAN ASSEMBLY

A fan assembly includes a fan hub. The fan hub has a body. The body includes a top surface and a bottom surface opposite to the top surface. The top surface defines a first recess towards the bottom surface. 1. A fan assembly comprising:a fan hub having a body comprising a top surface and a bottom surface opposite to the top surface, wherein the top surface defines a first recess towards the bottom surface.2. The fan assembly of claim 1 , wherein the bottom surface defines a second recess towards the top surface claim 1 , the first recess and the second recess are spaced apart from each other.3. The fan assembly of claim 2 , further comprising a plurality of fans claim 2 , wherein the fans extend outside from the body radically.4. The fan assembly of claim 3 , further comprising a shaft claim 3 , wherein the second recess comprises a bottom surface claim 3 , the bottom surface is parallel to the bottom surface of the body claim 3 , the shaft protrudes from the bottom surface of the second recess towards the bottom surface of the body.5. The fan assembly of claim 4 , wherein the shaft and the body are coaxial.6. The fan assembly of claim 4 , further comprising a fan box claim 4 , a bearing group claim 4 , and a stator group claim 4 , wherein the fan box comprises a frame and a bearing block claim 4 , the frame comprises an upper surface and a lower surface opposite to the upper surface claim 4 , the upper surface defines a receiving space towards the lower surface claim 4 , the bearing block is located at a center of the receiving space and is adjacent to the lower surface claim 4 , the fan box further comprises a shaft tube protruding from a center of the bearing block towards the upper surface claim 4 , the shaft tube runs through the stator group claim 4 , the stator group is fixed on the bearing block claim 4 , the shaft tube defines a through hole to receive the bearing group claim 4 , the fan hub is received in the receiving space and is fixed on the bearing ...

SYSTEMS AND METHODS OF IMPROVED PLANT CULTIVATION AND ELONGATE AIRFLOW ASSEMBLY FOR THE SAME

An elongate air delivery assembly having a housing extending between two end caps. The housing includes a plurality of exit vents from which airflow is provided in a consistent sheet at a uniform velocity, and the housing is rotatable about a central longitudinal axis to change a direction of the airflow. A method of improving plant cultivation includes positioning one or more elongate air delivery systems adjacent rows of plants such that the sheet of air generated by the elongate air delivery system is directed horizontally across the plants underneath their plant canopy. 1. An elongate airflow assembly comprising:a first end and a second end positioned opposite the first end;a housing extending between the first and second ends and defining a central longitudinal axis, the housing including a plurality of intake slots and a plurality of exit vents; anda plurality of fans positioned within the housing and including a plurality of blades that are rotatable about a fan axis in a first rotational direction,wherein, when the plurality of blades are rotated in the first rotational direction, air flows through the plurality of intake slots in a first airflow direction generally tangential to the central longitudinal axis and flows through the plurality of exit vents in a second airflow direction generally tangential to the longitudinal axis.2. The elongate airflow assembly of claim 1 , wherein the housing is rotatable about the central longitudinal axis that extends through a center of the housing and between the first and second ends.3. The elongate airflow assembly of claim 2 , wherein the housing is rotatable about the central longitudinal axis in the first rotational direction and a second rotational direction that is opposite the first rotational direction.4. The elongate airflow assembly of claim 2 , wherein the first end comprises a first end cap including a first perimeter portion claim 2 , and wherein a position of the first perimeter portion is independent of ...

Cooling fan and cooling device with cooling fan

A cooling fan includes a frame and a fan body. A bottom end of the frame forms a pressed portion that borders an air inlet. The pressed portion increases the size of the air inlet allowing more air to flow to better cool an electronic device.

WATER COOLING RADIATOR WITH HEAT CONDUCTING PLATE OF FULL-INJECTION-MOLDING CLOSED HEAT RADIATION STRUCTURE

A water cooling radiator with a heat conducting plate of full-injection-molding closed heat radiation structure, including a surface cover, a motor, a main chamber provided with a motor mounting groove and a water cooling liquid inlet/outlet, an impeller arranged at the bottom of the main chamber, a turbine housing provided at the bottom of the impeller, and a heat radiation baseplate provided with an upper baseplate and a lower baseplate. A motor transmission seat is arranged in the motor mounting groove, and the bottom of the impeller is provided with fan blades. The bottom of the upper baseplate is provided with a throttling plate connected with the upper baseplate in a limiting contact manner through a throttling plate limiting groove, and the throttling plate is provided with a throttling plate through hole. The bottom of the lower baseplate is inlaid and connected with a metal bottom heat radiation plate insert. 11345331333133243314414425455155457107717272737371775774747757474173109. A water cooling radiator with a heat conducting plate of a full-injection-molding closed heat radiation structure , comprising: a surface cover () , a motor , a main chamber () , an impeller () , a turbine housing () and a heat radiation baseplate , wherein the top of the main chamber () is provided with a motor mounting groove (); a motor transmission seat () is arranged in the motor mounting groove (); one side of the main chamber () is provided with a water cooling liquid inlet/outlet (); the impeller () is arranged at the bottom of the main chamber () and corresponds to the bottom outer side of the motor mounting groove (); the bottom of the impeller () is provided with fan blades () , and the impeller () is provided with a shaft connection seat (); the turbine housing () is arranged at the lower side of the impeller (); the turbine housing () is provided with a water cooling liquid outlet (); the bottom of the turbine housing () is provided with a water cooling liquid suction ...

Drive system for an agricultural product distribution system

An agricultural product distribution system includes a fan configured to provide an air flow that fluidizes and transports particulate material throughout the agricultural product distribution system. The fan includes an impeller, an inlet position on a first axial side of the fan, and an outlet position on a peripheral side of the fan. The agricultural product distribution system includes a power transfer shaft having a first end non-rotatably coupled to the impeller, wherein the power transfer shaft extends through the inlet of the fan.

TURBO COMPRESSOR AND TURBO CHILLER USING SAME

The purpose of the present invention is to provide: a turbo compressor which is provided with an open impeller and has the minimal gap between the shroud and the impeller such that efficiency is improved and the safe operating region is enlarged; and a turbo chiller using the same. The turbo compressor is provided with an open impeller with a shroud provided on the side of a casing, and the rotary shaft is supported by a radial magnetic bearing and a magnetic thrust bearing. The turbo compressor is provided with a control unit that comprises: a load calculating means that calculates the axial thrust load generated by the pressure distribution of the compressor; and an axial support position control means that controls a gap between the impeller and the shroud to be a target gap by varying, on the basis of the axial thrust load, the axial support position of the rotary shaft due to the magnetic thrust bearing. 17-. (canceled)8. A turbo compressor comprising:an open impeller with a shroud provided on a casing side;a rotary shaft which is supported by a radial magnetic bearing and a thrust magnetic bearing; and load calculating means for calculating an axial direction thrust load generated by a pressure distribution of the compressor, and', {'b': 1', '2', '1, 'axial direction support position controlling means for controlling a gap between the impeller and the shroud to at least two different target gaps including a minimum gap S and a gap S which is greater than the gap S by changing an axial direction support position of the rotary shaft determined by the thrust magnetic bearing on the basis of the axial direction thrust load.'}], 'a controller which includes'}9. The turbo compressor according to claim 8 ,{'b': 1', '2', '1, 'wherein the axial direction support position controlling means has a function of, when an operation condition in which the axial direction thrust load is rapidly changed is detected, correcting and controlling the axial direction support position ...

COMPOSITE FAN HOUSING AND METHOD

A fan assembly, fan housing, and associated methods are shown. Configurations and methods are shown that include reinforcing layers over a seam of a housing, such as a composite housing. In one example, both an inside and an outside of a seam are reinforced. 1. A fan assembly , comprising:an impeller;a rotatable shaft coupled to a center of the impeller; and at least two housing portions joined together at a seam; and', 'a reinforcing layer adhered over the seam on an inside of the housing., 'a housing covering at least a portion of the impeller, the housing including2. The fan assembly of claim 1 , wherein the least two housing portions include composite material portions.3. The fan assembly of claim 2 , wherein the least two housing portions include fiberglass reinforced composite portions.4. The fan assembly of claim 1 , wherein the reinforcing layer includes multiple reinforcing layers.5. The fan assembly of claim 4 , wherein the multiple reinforcing layers includes both a woven fiber reinforced composite layer and random matted fiber reinforced composite layer.6. The fan assembly of claim 1 , wherein the at least two housing portions are adhered together along an extending portion of the two housing portions that extends away from an outside of the housing.7. A fan assembly claim 1 , comprising:an impeller;a rotatable shaft coupled to a center of the impeller; and at least two housing portions joined together at a seam;', 'a first reinforcing layer adhered over the seam on an inside of the housing; and', 'a second reinforcing layer covering the seam on an outside of the housing., 'a housing covering at least a portion of the impeller, the housing including8. The fan assembly of claim 7 , wherein the least two housing portions include composite material portions.9. The fan assembly of claim 7 , wherein the second reinforcing layer includes a fiber reinforced composite layer.10. The fan assembly of claim 7 , further including a number of mechanical fasteners that ...

Blade module and fan using the same

A blade module and a fan using the same are provided. The blade module includes a rotating shaft and a plurality of blades. Each blade is connected to the rotating shaft and includes a blade body and an airflow guiding portion. The airflow guiding portion is connected to the blade body and has an opening.

Scroll tongue part and rotary machine including the same

There is provided a casing of a rotary machine which includes a diffuser part; a scroll part into which fluid emitted from the diffuser part flows; and a scroll tongue part including: a tongue portion; a bottom surface extending from a bottom surface of the diffuser part; and a flow opening provided between the tongue portion and the bottom surface, the fluid moving from the diffuser part to the scroll part through the flow opening, wherein the bottom surface of the scroll tongue part is coplanar with the bottom surface of the diffuser part.

IMPELLER AND CENTRIFUGAL COMPRESSOR

An impeller includes: a disk which is supported so as to be rotatable around an axis and which includes an outer peripheral surface expanding toward an outside in a radial direction of the disk as it goes to one side in an axial direction of the axis; a plurality of blades which are arranged on the outer peripheral surface of the disk at intervals in a circumferential direction of the disk; and a cover which is disposed at a position facing the outer peripheral surface of the disk so as to cover the plurality of blades. A leading edge of the blade includes: a straight portion which extends so as to be close to one side in the axial direction from the cover toward the disk; and a scooped portion which is receded in relation to the straight portion and of which at least a portion close to the disk is formed in an arc shape when viewed from the circumferential direction. 1. An impeller comprising:a disk which is supported so as to be rotatable around an axis and which includes an outer peripheral surface expanding toward an outside in a radial direction of the disk as it goes to one side in an axial direction of the axis;a plurality of blades which are arranged on the outer peripheral surface of the disk at intervals in a circumferential direction of the disk; anda cover which is disposed at a position facing the outer peripheral surface of the disk so as to cover the plurality of blades,wherein a leading edge of the blade includes:a straight portion which extends so as to be close to one side in the axial direction from the cover toward the disk; anda scooped portion which is receded in relation to the straight portion and of which at least a portion close to the disk is formed in an arc shape when viewed from the circumferential direction.2. The impeller according to claim 1 , wherein a portion of the scooped portion which is close to the cover is formed in an arc shape when viewed from the circumferential direction.3. The impeller according to claim 1 , wherein a ...