Способы и системы для предотвращения протечки смазочного масла в газовых турбинах

Описана система уплотнения маслосборника, содержащая внешний источник сжатого воздуха, выполненный с возможностью дополнительной подачи сжатого воздуха к маслосборнику подшипникового узла, когда режимы работы газотурбинного двигателя таковы, что встроенный источник сжатого воздуха, например компрессор газогенератора, таков, что генерируемое давление воздуха оказывается недостаточным для создания избыточного давления в уплотнительной камере маслосборника. Описан также газотурбинный двигатель (варианты), содержащий такую систему уплотнения маслосборника. Кроме того, описан соответствующий способ управления газотурбинным двигателем для содействия снижению протечек смазочного масла. Технический результат изобретения – повышение надежности работы маслосборника путем предотвращения подгорания смазочного масла. 4 н. и 18 з.п. ф-лы, 6 ил.

ЭЛЕКТРИЧЕСКАЯ МАШИНА, КРЫЛЬЧАТКА И ВЕНТИЛЯТОР

Изобретение относится к области электрических машин. Осевая поточная крыльчатка (200) имеет ось (R) вращения и содержит центральную ступицу (201), содержащую основную стенку и боковую стенку, выступающую из основной стенки для образования чашеобразной конструкции, множество лопастей (204), каждая из которых прикреплена к центральной ступице (201) и содержит передний край (205) и задний край, множество экстракторов текучей среды, связанных с основной стенкой, для перемещения воздуха от внутренней части чашеобразной конструкции к внешней части чашеобразной конструкции через основную стенку. Техническим результатом является улучшение охлаждения. 3 н. и 22 з.п. ф-лы, 8 ил.

ЛОПАТКА РОТОРА И ВЕНТИЛЯТОР

Лопатка ротора содержит корпус лопатки ротора и участок хвостовика лопатки ротора, выполненный за одно целое с корпусом лопатки ротора. Корпус лопатки ротора образован укладкой множества композитных листов, каждый из которых изготовлен из волокон и матричной смолы, и включает множество первых групп композитных листов и множество вторых групп композитных листов, расположенных в направлении толщины лопатки. Каждая первая группа композитных листов включает множество композитных листов, уложенных один на другой от стороны центра толщины лопатки по направлению к спинке лопатки и которые отличаются друг от друга углом ориентации волокон. Каждая вторая группа композитных листов включает один или множество композитных листов, уложенных один на другой от стороны центра толщины лопатки по направлению к корыту лопатки и которые отличаются друг от друга углом ориентации волокон. Схемы укладки множества композитных листов в первой и во второй группе композитных листов являются одинаковыми. Результирующее ...

ШНУР ЭЛЕКТРОПИТАНИЯ В СБОРЕ И ЭЛЕКТРОННОЕ УСТРОЙСТВО

Настоящее изобретение относится к шнуру электропитания в сборе и электронному устройству. Шнур электропитания в сборе может содержать: шнур электропитания, штепсель шнура электропитания, расположенный на одном конце шнура электропитания для сопряжения с розеткой; и цоколь шнура электропитания, расположенный на другом конце шнура электропитания, и имеющий поверхности в верхней и нижней части, при этом каждая из поверхностей снабжена контактами подачи электропитания, причем контакты подачи электропитания в верхней или нижней части выполнены с возможностью соприкосновения с контактами подвода электропитания в узле подвода электропитания электронного устройства для подачи электропитания на электронное устройство при сопряжении цоколя шнура электропитания с узлом подвода электропитания. В технических решениях настоящего изобретения, электронное устройство может быть совместимо с множеством способов подачи электропитания, при этом легко контролируется состояние соединения электронного устройства ...

ЛОПАТКА ВЕНТИЛЯТОРА ДЛЯ АВИАЦИОННОГО ТУРБОРЕАКТИВНОГО ДВИГАТЕЛЯ С ИЗОГНУТЫМ ПРОФИЛЕМ В СЕЧЕНИЯХ НОЖКИ

... 1. Лопатка (4) вентилятора для авиационного турбореактивного двигателя, содержащая перо (6), аксиально проходящее между передней кромкой (18) и задней кромкой (20), и содержащая множество сечений пера (S), уложенных радиально между сечением ножки (S) и сечением головки (S), отличающаяся тем, что все сечения пера, заключенные между сечением ножки (S) и сечением пера (S), расположенным на радиальной высоте, соответствующей 30% общей радиальной высоты пера, имеют кривую средней линии, имеющей точку изгиба.2. Лопатка по п. 1, в которой точки изгиба кривых средней линии сечений пера, заключенных между сечением ножки и сечением пера, расположенным на радиальной высоте, соответствующей 30% общей радиальной высоты пера, расположены между 25% и 75% длины хорды лопатки, измеряемой от передней кромки в сторону задней кромки.3. Лопатка по п. 2, в которой точки изгиба кривых средней линии сечений пера, заключенных между сечением ножки и сечением пера, расположенным на радиальной высоте, соответствующей ...

ВОЗДУХООЧИСТИТЕЛЬ С ВОЗДУШНОЙ ТРУБОЙ

Настоящее изобретение относится к технике очистителей воздуха, а более конкретно - к воздухоочистителю с воздушной трубой. Воздушная труба для воздухоочистителя содержит канальный вентилятор в своем впускном отверстии и осевой вентилятор в своем выпускном отверстии, причем на внутренней стенке трубы между канальным вентилятором и осевым вентилятором сформирован дефлектор, выполненный с возможностью возмущения воздушного потока, который всасывается в трубу посредством канального вентилятора, направляется к осевому вентилятору вдоль по внутренней стенке трубы и высвобождается через осевой вентилятор, так чтобы вынудить по меньшей мере часть воздушного потока, направляемого к осевому вентилятору, отклониться от внутренней стенки трубы, при этом дефлектор содержит направленный внутрь выпуклый участок, сформированный на внутренней стенке трубы, выпуклый участок имеет форму возвышающейся округлости, и указанная округлость содержит поверхность стороны набегающего потока, обращенную к канальному ...

ВЕНТИЛЯТОР В СБОРЕ

ШНУР ЭЛЕКТРОПИТАНИЯ В СБОРЕ И ЭЛЕКТРОННОЕ УСТРОЙСТВО

СПОСОБ И УСТРОЙСТВО СОЕДИНЕНИЯ ВЕНТИЛЯТОРНОГО АГРЕГАТА И РАДИАТОРА ДЛЯ ДВИГАТЕЛЯ АВТОТРАНСПОРТНОГО СРЕДСТВА И ПОЛУЧЕННЫЙ УЗЕЛ ВЕНТИЛЯТОРНОГО АГРЕГАТА И РАДИАТОРА

... 1. Устройство соединения вентиляторного агрегата (3) с радиатором (5) автотранспортного средства, отличающееся тем, что содержит:- первую периферическую крепежную раму (9), поддерживающую вентиляторный агрегат (3), и вторую периферическую крепежную раму (11), поддерживающую радиатор (5), при этом, по меньшей мере, одна из крепежных рам (9) содержит, по меньшей мере, один периферический уплотнительный бортик (13), выполненный с возможностью перекрывания бокового периферического края другой крепежной рамы (11),- по меньшей мере, две верхние крепежные точки (19а) и, по меньшей мере, две нижние крепежные точки (19b), неподвижно соединенные с каждой из указанных крепежных рам (9, 11), при этом каждая крепежная точка (19а, 19b) содержит палец (19а1, 19b1) и лапку (19а2, 19b2), образующую гнездо, выполненные с возможностью взаимодействия друг с другом путем одновременного зацепления, при этом пальцы (19а1, 19b1) крепежных точек неподвижно соединены с одной крепежной рамой (9), а соответствующие ...

ХОЛОДИЛЬНЫЙ АППАРАТ С ВЕНТИЛЯТОРОМ

... 1. Холодильный аппарат, в частности бытовой холодильный аппарат, содержащий, по меньшей мере, одну камеру (26; 27), по меньшей мере, один вентилятор (1) и каркас (2), установленный, по меньшей мере, в одной камере (26; 27) и служащий для установки вентилятора (1), отличающийся тем, что вентилятор (1) выполнен с возможностью установки в каркас (2) в двух различных положениях, и что электрический контакт (10), соединенный с вентилятором (1), в первом положении вентилятора (1) может устанавливаться только в первое монтажное гнездо (16) каркаса (2), а во втором положении вентилятора (1) - только во второе монтажное гнездо (16) каркаса (2).2. Холодильный аппарат по п.1, отличающийся тем, что контакт (10) соединен с разъемом (8) на вентиляторе (1) кабелем (9), и что в первом положении расстояние между разъемом (8) и первым монтажным гнездом (16), а во втором положении - расстояние между разъемом (8) и вторым монтажным гнездом (16) больше длины кабеля (9).3. Холодильный аппарат по п.1, отличающийся ...

ЭЛЕКТРИЧЕСКАЯ МАШИНА, КРЫЛЬЧАТКА И ВЕНТИЛЯТОР

НАГНЕТАТЕЛЬНОЕ УСТРОЙСТВО И НАРУЖНЫЙ БЛОК КОНДИЦИОНЕРА ВОЗДУХА, СОДЕРЖАЩИЙ ЕГО

БЕСШУМНЫЙ ЭЛЕКТРОДВИГАТЕЛЬ С САМОВЕНТИЛЯЦИЕЙ, В ЧАСТНОСТИ, ДЛЯ ЖЕЛЕЗНОДОРОЖНОГО ТРАНСПОРТНОГО СРЕДСТВА

ДИФФУЗОР, ВЕНТИЛЯТОР С ТАКИМ ДИФФУЗОРОМ, А ТАКЖЕ УСТРОЙСТВО С ТАКИМИ ВЕНТИЛЯТОРАМИ

... 1. Диффузор, по меньшей мере с одной стенкой (8), которая охватывает впускное отверстие с круглым сечением, переходящим по высоте стенки (8) диффузора (4) в угольное сечение на выпуске диффузора (4), отличающийся тем, что у переходов (15) между сторонами (34-37) стенки (8) имеется винтообразность, которая следует закручиванию потока воздуха через диффузор.2. Диффузор по п. 1, отличающийся тем, что сечение диффузора (4), начиная со входного конца (6), сначала уменьшается, а затем увеличивается.3. Диффузор по п. 1 или 2, отличающийся тем, что угловое сечение предусмотрено более чем на четверти высоты стенки (8).4. Диффузор по п. 1, отличающийся тем, что диффузор (4) имеет по меньшей мере еще одну стенку (9, 10), которая окружена стенкой (8) на некотором расстоянии.5. Диффузор по п. 4, отличающийся тем, что еще одна стенка (9, 10) по меньшей мере на выпуске имеет угольное сечение.6. Диффузор по п. 5, отличающийся тем, что дополнительная стенка (9, 10) на входе имеет округлое, предпочтительно ...

ОСЕВОЙ ВЕНТИЛЯТОР И СПОСОБ ИЗГОТОВЛЕНИЯ ОСЕВОГО ВЕНТИЛЯТОРА

... 1. Осевой вентилятор с мотором (1), на котором со стороны ротора закреплена крыльчатка (23, 24), от втулки которой (23) отходят лопасти вентилятора (24), имеющие передний и задний канты (26, 27), и с подвеской (2), посредством которой мотор (1) закреплен на корпусе (3), и которая имеет по меньшей мере один состоящий из плоскостного материала элемент подкоса (4, 5, 8, 43), который соединяет мотор (1) с корпусом (3) и в направлении потока воздуха располагается приблизительно в положении "на ребре", отличающийся тем, что элемент подкоса (4, 5, 8, 43) на части своей длины снабжен по меньшей мере одним вырезом (7), образованным путем высечки в плоскостном материале.2. Осевой вентилятор по п. 1, отличающийся тем, что элемент подкоса (4, 5, 8, 43) образован металлической листовой деталью.3. Осевой вентилятор по п. 1, отличающийся тем, что по меньшей мере от одного края выреза (7) отходит по меньшей мере одна опорная деталь (34, 35), которая предпочтительно выполнена в виде одной детали с элементом ...

"Ventilator sowie zugehöriges Trägerelement"

Die vorliegende Erfindung betrifft einen Ventilator (1), insbesondere Axialventilator, mit einem Trägerelement (2) mit einem Wandring (4) und einem in dem Wandring (4) gehalterten elektrischen Ventilatormotor (6) mit einem Ventilator-Laufrad (8). Der Wandring (4) weist an seinem Außenumfang ein Scharnier (20) auf, das aus einem mit dem Wandring (4) verbundenen ersten Scharnierteil (22) und einem relativ zu dem ersten Scharnierteil (22) um eine Scharnierachse (X) schwenkbaren zweiten Scharnierteil (24) besteht, wobei das zweite Scharnierteil (24) als Klemmenkasten (26) zur Aufnahme von elektrischen Anschlussverbindern (27) ausgebildet ist. Ferner betrifft die Erfindung ein Trägerelement (2) für einen solchen Ventilator (1).

GEBLÄSEBAUGRUPPE UND VERFAHREN ZUM MONTIEREN DERSELBEN

Eine Gebläsebaugruppe enthält einen Ventilator, welcher eine Frontplatte enthält, die einen Ventilatoreinlass definiert. Die Gebläsebaugruppe enthält auch eine Einlassplatte, die benachbart zu dem Ventilator positioniert ist, so dass die Einlassplatte und die Frontplatte zwischen sich einen Hohlraum definieren, welcher sich umlaufend um den Ventilatoreinlass herum erstreckt. Ein Motor ist mit dem Ventilator und mit der Einlassplatte gekoppelt und so konfiguriert, dass er sich um die Rotationsachse dreht. Der Motor ist innerhalb des Hohlraums positioniert.

Kühlungslüfter

Ein Kühlungslüfter enthält einen mit einer Drehantriebsquelle verbundenen Nabenabschnitt (12), eine Vielzahl von aus dem Nabenabschnitt in radialer Richtung nach außen hervorstehenden Rotorblättern (13) und ein zylindrisches Ringelement (14) ausgestaltet zum ringförmigen Verbinden der Umgebungen von in radialer Richtung äußeren Endabschnitten der Vielzahl von Rotorblättern. Die aus dem Nabenabschnitt (12) in radialer Richtung nach außen hervorstehenden Rotorblättern (13) werden durch das zylindrische Ringelement (14) in der Nähe des äußeren Endabschnitts in radialer Richtung verbunden. Eine Lufteinlassausnehmung (16) ist an einem Endabschnitt in axialer Richtung einer Luftansaugseite des Ringelements (14) gebildet. Die Lufteinlassausnehmung (16) ist zwischen in Drehrichtung vorderen Bereichen aller Rotorblätter (13) auf dem Ringelement (14) und in Drehrichtung vorderen Bereichen der benachbarten Rotorblätter (13) angeordnet. Die von der äußeren Umfangsseite strömende Luft durchströmt die ...

Lüfter mit einem im Kunststoffgehäuse integrierten Ventilatormodul

Lüfter (100) zum Lüften und Trocknen von Gebäuden und Räumen, wobei der Lüfter (100) ein kunststoffaufweisendes oder aus Kunststoff bestehendes Lüftergehäuse (10) aufweist, wobei der Lüfter (100) ferner ein im Lüftergehäuse (10) angeordnetes Ventilatormodul (11) mit einem Ventilator (12) zur Luftförderung aufweist, dadurch gekennzeichnet, dass das Ventilatormodul (11) ein metallaufweisendes oder aus Metall bestehendes Ventilatorgehäuse (13) aufweist, welches den Ventilator (12) umfänglich umschließt.

Verfahren zur Optimierung eines Kraftfahrzeug-Kühlsystems

Die Erfindung betrifft ein Verfahren zur Optimierung eines Kraftfahrzeug-Kühlsystems (1), welches einen Radiator (40) sowie wenigstens einen dahinter an einer Lüfterzarge (10) montierten Kühlerlüfter (30, 31) aufweist. Um den Entwicklungsprozess einer an ein bestimmtes Kraftfahrzeugmodell angepassten Lüfterzarge zu optimieren, ist erfindungsgemäß vorgesehen, dass für eine Mehrzahl von Zargenkonfigurationen jeweils ein Testdurchlauf mit folgende Schritten durchgeführt wird:- Montage der Lüfterzarge (10) durch lösbares Befestigen einer Mehrzahl von Modulen (11 - 23) aneinander entsprechend der gewählten Zargenkonfiguration; sowie- Durchführen eines Testbetriebs zur Effektivitätsbestimmung der Kühlung bei eingebauter Lüfterzarge (10), und nach den Testdurchläufen eine optimale Zargenkonfiguration ausgewählt wird.

Gehäusering eines Axialventilators

Gehäusering (1) eines Axialventilators, gebildet aus mindestens zwei Ringsegmenten, mit einer nach radial außen weisenden Mantelfläche (2), wobei an der Mantelfläche (2) einstückig mindestens eine Befestigungsschiene (3) ausgebildet ist, welche einen Befestigungskanal (9) zur Einbringung und Fixierung von Befestigungselementen bildet.

Magnetische Befestigung für Ofenventilatoren

Magnetische Befestigung eines Ventilators an Holz-, Kohle-, Pellet- oder Gasöfen, dadurch gekennzeichnet, dass ein oder mehrere Magnete am Ventilatorfuß angebracht sind (Bild 2).

Integrierter Lüfter

Hydrostatischer Antrieb, insbesondere hydrostatischer Lüfterantrieb

Offenbart ist ein hydrostatischer Lüfterantrieb, der mit einem geschlossen Kreislauf betrieben wird, und der eine Verstellpumpe hat, deren Hubvolumen über eine Verstelleinrichtung einstellbar ist. Dabei ist die Verstellpumpe über zwei Arbeitsleitungen an einen Motor angeschlossen, der drehmomentfest an ein Lüfterrad gekoppelt ist. Der Lüfterantrieb hat eine Speisedruckpumpe und eine Stelldruckleitung, über die die Verstelleinrichtung mit Stelldruckmittel versorgt wird. An die Stelldruckleitung ist ein Druckabschneideventil angeschlossen, über das in Abhängigkeit eines Hochdrucks in der als Hochdruckleitung wirkenden Arbeitsleitung ein Stelldruck auf einen solchen Wert begrenzt werden kann, dass ein bestimmter Wert des Hochdrucks nicht überschritten wird. Erfindungsgemäß hat das Druckabschneideventil eine Vorsteuerung, so dass ein Arbeitsdruck der Verstellpumpe regelbar ist.

Modul für ein Kühlsystem eines Kraftfahrzeugs

Modul (1) für ein Kühlsystem eines Kraftfahrzeugs umfassend eine Antriebseinheit (2), ein Lüfterrad (3), wobei das Lüfterrad (3) über die Antriebseinheit (2) zu einer Drehbewegung antreibbar ist und eine Lüfternabe (4) sowie mehrere an der Lüfternabe (4) angeordnete, sich radial erstreckende Lüfterblätter (5) aufweist, und ein Spiralgehäuse (6), wobei das Lüfterrad (3) drehbar in dem Spiralgehäuse (6) aufgenommen ist, wobei die Lüfternabe (4) des Lüfterrads (3) hohl, nämlich einen axialen Kanal (7) ausbildend, gestaltet ist und die Lüfterblätter (5) jeweils zumindest einen sich über die Länge des jeweiligen Lüfterblatts (5) erstreckenden radialen Kanal (8) aufweisen, wobei der axiale Kanal (7) mit einem Kühlflüssigkeitszufluss (9) sowie den radialen Kanälen (8) in den Lüfterblättern (5) dichtend verbunden ist und die Lüfterblätter (5) jeweils an ihren von der Lüfternabe (4) wegweisenden Enden mit dem Spiralgehäuse (6) dichtend verbunden sind.

Combine harvester engine cooling system - has guide wheel to direct blown air through three concentric channels each of which convey different quantity of dust

The cooling system for the engine of a combine harvester, using air as a colling medium, has an axial fan (1) which directs the air through a duct (2) divided into three concentric channels (3, 4, 5). Due to the effect of a guide wheel (7), the heaviest dust particles are flung towards the outside, and the cleanest air is towards the centre. The middle channel (4) conveys air towards the cylinder, and the innermost channel (3) conveys nearly dust free air to an oil cooler which may be of honeycomb or plate type. The heavily dust laden air passed to a dust collector chamber, after which it may be passed to an auxiliary machine.

Lüfterkupplung

Die Erfindung betrifft eine Lüfterkupplung, insbesondere für einen Lüfter (110) einer Kühlanlage eines Kraftfahrzeugmotors, mit einem Gehäuse und einem ringförmigen Flansch (116) zum Anschluss des Lüfters (110), wobei der Flansch (116) zentrisch um eine Gehäuseachse (120) angeordnet ist, wobei der Flansch (116) senkrecht zu der Gehäuseachse (120) eine flächige Flanschringebene (136, 138, 144) ausbildet und eine Flanschringinnenseite (124) und eine Flanschringaußenseite (134) aufweist, die die Flanschringebene (136, 138, 144) begrenzen, wobei der Flansch (116) in der Flanschringebene (136, 138, 144) bereichsweise in Richtung parallel zu der Gehäuseachse (120) verformt ist.

Axialventilator mit Bypasskanal im Elektronikgehäuse

Die Erfindung betrifft einen Axialventilator (1) mit einem Motor (2) und einem über den Motor (2) antreibbaren und um eine Rotationsachse (RA) rotierbaren Ventilatorrad (3), das den Motor (2) radial außenseitig umschließend angeordnet ist und im Betrieb einen Ausblasluftstrom von einer Saugseite (S) zu einer Druckseite (D) erzeugt, wobei axial angrenzend an dem Motor (2) eine Motorelektronik (4) in einem Elektronikgehäuse (8) aufgenommen angeordnet ist, wobei in dem Elektronikgehäuse (8) mindestens ein durchgängiger Bypasskanal (9) ausgebildet ist, der sich von einer Einströmöffnung (7) an einer dem Ventilatorrad (3) gegenüberliegenden axialen Stirnseite des Elektronikgehäuses (8) in axialer Richtung bis zu der Motorelektronik (4) erstreckt und anschließend nach radial außen entlang der Motorelektronik (4) bis zu einer radialen Ausströmöffnung (6) an dem Elektronikgehäuse (8) verläuft, und wobei die Ausströmöffnung (6) auf der Druckseite oder angrenzend zur Druckseite ausgebildet ist, so ...

Outlet guide vane for aircraft turbine engine, presenting an improved lubricant cooling function

AXIAL FLOW FAN ASSEMBLY

... 1370573 Axial-flow fans HUDSON PRODUCTS CORP 22 May 1972 [20 Dec 1971] 24026/72 Heading F1C An axial flow fan comprises first and second impellers 19, 20 of equal outer diameter and rotating at a desired speed within a ring 18 of constant inner diameter, the blades of the second impeller being of greater average pitch than those of the first impeller, and the axial spacing between the impellers being considerably less than would be necessary for the impellers to do the same useful work with the blades of the second impeller at the same average pitch as the blades of the first impeller and rotating at the desired speed. For 14 foot diameter impellers, the centres of the hubs may be spaced apart by 20 inches, whereby the air entering the second impeller retains most of the whirl velocity with which it left the first impeller, this necessitating the greater blade pitch provided on the second impeller. The blades of the second impeller are offset circumferentially relative to those of the first ...

A motor and a handheld product having a motor

A fan housing assembly

Continuous band propeller

A design to increase and smoothly improve the throughput of fluid (air or gas) through the inlet fan(or fans) of an aero-engine system

Blower and fan,blower and fan system,and method for supplying wind using the blower and fan system

Downstream variable guide vanes for a fan

A fan assembly

A fan assembly, eg in the form of a humidifying apparatus, includes a body (12, figs.1-3) and an air outlet (14) connected to the body. The body includes an air inlet 72 in the form of a plurality of apertures formed in an outer casing of the body, an impeller and a motor for driving the impeller to generate an air flow and a drive circuit 74 for actuating the motor. The drive circuit 74 is connected to the outer casing and a panel 290 shields the drive circuit 74 from the air flow passing along the air flow path. The drive circuit 74 includes a connector 75a for connecting the drive circuit 74 to a power cable, the connector 75a being located within the outer casing. The outer casing includes an aperture 75b through which the power cable is inserted to connect the cable to the connector. The panel 290 includes a drain hole (298, fig.16) located eg in a trough 296 beneath the connector 75a.

Axial-flow ventilation fan

An axial-flow fan having a stepped housing defined by an inlet part and an outlet part, the outlet part having the inside diameter smaller than the inside diameter of the inlet part, the inlet part adjoined to an inlet tube of an inside diameter substantially equal to the inside diameter of the outlet part of the housing. The outlet part of the housing accommodates a rotor having blades arranged such that their forward tips are located in the inlet part of the housing and a ferrule being secured at a certain distance from the inlet tube coaxially with the housing to form with the housing an annular chamber having on the side of the rotor an inlet passage and on the side of the inlet tube an outlet passage. Rigidly affixed in this chamber are guide vanes pointing by their heels to the inlet tube. The heels of the guide vanes extend to the inlet tube and are radially curved at a portion between the inlet tube and the ferrule to form an annular radial grill.

Fluidfoil

Columnar air moving devices, systems and methods

AXIAL FANS

Fans for ventilation

A fan for ventilation such as a building ventilation extractor comprising a housing 22, an impeller 44, a motor 48 arranged to drive the impeller to drive air from an inlet to an outlet 24, the impeller located centrally in a flow duct, and at least one inlet guide vane 70 for guiding flow approaching the impeller. Also disclosed is: a fan having the impeller located axially wholly within a tapered duct portion of the duct; A fan having at least one downstream guide vane being at least partly curved and arranged to reduce swirl in downstream flow; A fan wherein the motor is located in a duct and having a motor cover, the motor and cover secured to a support by a common fixing; A ventilation system arranged to push air out of a building through an exhaust duct; A data communication system having a link from a plurality of fan units to a controller to enable common fan speed boost; A system to control the fans based on weather data; A data communications system having a data store remote ...

Thermal/noise management in a scroll pump

Inprovements in and relating to ventilating fan arrangements

An axial flow fan mounted on a vertical axis above an underground passage through which air is to be circulated, comprises a first stationary wall 6 extending upwardly of the fan impeller 1 and of increasing circular boundary dimensions in the vertically upward direction whilst being symmetrical about the fan axis to form an inner wall of a diffusion chamber 10 for air being extracted by the fan, a second stationary wall 8 comprising a lower conical portion 8b disposed below the impeller and co-axially therewith whereby air being extracted converges towards the fan blades 3 and a further upper portion 8a extending above the impeller and of increasing circular boundary dimension in vertically upward direction, the minimum circumference of the wall 8 being located in the same horizontal region as the impeller and dimensioned to clear the tips of the fan blades, the upper portion 8a forming the outer wall of the diffusion chamber 10 which chamber is of annular hydraucone form and in vertical ...

Air moving device with bypass intake

Chiller

Kühler (1), aufweisend: - einen Ventilator mit einem im Wesentlichen starren Ventilatorgehäuse (4), welches einen Ventilator-Luftströmungsraum (9) einschließt, - einen Wärmetauscher mit einem im Wesentlichen starren Wärmetauschergehäuse (6), welches einen Wärmetauscher-Luftströmungsraum (12) einschließt, und - ein Luftführungselement (2), welches den VentilatorLuftströmungsraum (9) innerhalb des Ventilatorgehäuses (4) mit dem Wärmetauscher-Luftströmungsraum (12) innerhalb des Wärmetauschergehäuses (6) im Wesentlichen fluiddicht verbindet, wobei das Luftführungselement (2) aus einem flexiblen, insbesondere gummielastischen, Material gebildet ist, wobei - zumindest eine starre Verbindung (14) zwischen dem Ventilatorgehäuse (4) und dem Wärmetauschergehäuse (6) vorgesehen ist.

Filteranordnung

Eine Vorrichtung zum Entfernen von festen und/oder flüssigen, in einem gasförmigen Medium enthaltenen Teilchen, insbesondere zum Entfernen von Feinstaub aus Luft, besitzt in einem Gehäuse (2) untergebracht eine Filteranordnung (13), die wenigstens ein Vorfilter (14) und ein Hauptfilter (15) aufweist. Weiters ist in dem Gehäuse (2) der Vorrichtung (1) wenigstens eine Einrichtung zum Erzeugen eines Luftstromes durch das Gehäuse (2) vorgesehen, die wenigstens einen elektromotorisch angetriebenen Ventilator (6) umfasst. Die Energie (Strom) für das Antreiben des Ventilators (6) wird durch ein an der Oberseite des Gehäuses (2) angeordnetes Fotovoltaikmodul (9) zur Verfügung gestellt.Das Gehäuse (2) ist im Wesentlichen rahmenförmig ausgebildet und besitzt an der Lufteintrittseite ein Gitter (5) und an der Luftaustrittsseite ein weiteres Gitter (4). Dem lufteintrittseitig angeordneten Gitter (5) kann eine Anzeigevorrichtung (8) für Werbehinweise oder sonstige Hinweise zugeordnet sein.

Axial compressor, blower or fan with decreased noise production

Portable fan

The present invention is directed to a portable fan for the use in firefighting and other ventilation use-cases. The portable fan provides firefighters the ability to provide positive pressure ventilation in use for fighting fires which does not require power cables or combustible fuel powered motors, and provides increased portability, reduced risk, and reduced deployment time associated with managing and fighting a fire.

Heart pump drive and bearing

A heart pump including a housing defining a cavity including at least one inlet aligned with an axis of the cavity and at least one outlet provided in a circumferential outer wall of the cavity. An impeller is provided within the cavity, the impeller including a rotor and vanes mounted on the rotor for urging fluid from the inlet radially outwardly to the outlet. A drive is provided for rotating the impeller in the cavity, the drive including a plurality of circumferentially spaced permanent drive magnets mounted within and proximate a first face of the rotor, adjacent drive magnets having opposing polarities and a plurality of circumferentially spaced drive coils mounted within the housing proximate a first end of the cavity, each coil being wound on a respective drive stator pole of a drive stator and being substantially radially aligned with the drive magnets, the drive coils being configured to generate a drive magnetic field that cooperates with the drive magnets to thereby rotate ...

Ceiling fan

Axial fan

Disclosed is an axial fan for blowing air, for an electric fan, heater, or the like. Compared to existing models, for the same diameter and rotational speed, the disclosed axial fan produces a greater area and volume of air flow in front of the axial fan. Also, the axial fan can be manufactured using a two-piece mold, making mass production easy, while maintaining the strength of the fan itself. The axial fan is provided with: a rotating shaft part attached to the rotating shaft of a rotational drive means; a set of internal blades provided coaxially with and to the outside of the rotating shaft part; and a set of external blades provided coaxially with and to the outside of the set of internal blades. The set of internal blades comprises a plurality of internal blades provided radially around the rotating shaft part, and the set of external blades comprises a plurality of external blades provided radially around the rotating shaft part. The numbers, areas, angles, and shapes of the internal ...

Handheld Blower

A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation. 14 1 10 142 1,42 AC) 1.31 0 141 1 140 142 1321 '13 ./ 1 1742 S3 ...

Variable-geometry ducted fan

VARIABLE-GEOMETRY DUCTED FAN A variable-geometry ducted fan (200) may include an air duct (202) having a longitudinal axis (X), the air duct (202) including an inlet (206) of the variable-geometry ducted fan (200), a fan (204) rotatably mounted within the air duct (202) downstream from the inlet (206), the fan (204) including fan blades (232) defining a fan area (A4), and a variable-area nozzle (236) coupled to the air duct (202) downstream from the fan (204), the variable-area nozzle (236) including an exhaust (248) of the variable-geometry ducted fan (200) having a variable exhaust area (A5 ).

Ceiling fan with moisture protection features

A fan may be designed for the strategic diversion of water through or around a housing enclosing a controller and/or a motor. The enclosure may include one or more paths for directing moisture away from the controller or the motor. For instance, the housing may include a gap between a support structure and the housing for preventing moisture from entering the housing. The housing may also include a hollow structure for directing moisture through the housing. Additionally, the housing may include one or more channels, raised walls, gutters, and shields for preventing fluid, such as liquid water, from entering an enclosure for the controller or motor.

RECIRCULATION BARRIER FOR A HEAT TRANSFER SYSTEM

AIR FENCE FOR FAN BLADE

A fan comprises a rotatable hub, a plurality of fan blades coupled with the hub, and a plurality of air fences coupled with the fan blades. Each fan blade has a free end and an opposite end secured to the hub. The air fences are positioned at selected locations along the length of the fan blades, between the ends of the fan blades. Each air fence includes a fin, which may extend upwardly or downwardly from the fan blade. Each air fence may be formed of a resilient material and may be configured to allow the air fence to be snapped onto a fan blade. Each air fence may define an opening through which a fan blade may be inserted. One or more surfaces of the air fence may be contoured to complement a surface contour of an airfoil shaped fan blade.

GAS TURBINE ENGINE FAN BLADE CONTAINMENT SYSTEMS

Gas turbine engine fan blade containment systems are disclosed. An example fan blade containment system includes a shield to be coupled to an aircraft structure and to at least partially surround a circumference of an aircraft engine. The shield is to be spaced from an outer surface the aircraft engine when the shield is coupled to the aircraft structure. The shield is to form a laminated clevis at an end of the shield. A retention rod is to be positioned in the laminated clevis of the shield. The retention rod is to engage a lug hook of the aircraft structure to anchor the shield to the aircraft structure ...

PLASTIC FAN SHROUD AND CONE ASSEMBLY AND METHOD

... ²A housing assembly for a fan portion. The housing assembly has a monolithic ²shroud ²assembly which has a shroud having a face-wall that substantially defines a ²face-wall ²plane and an orifice wall extending from the face-wall in a first direction. ²The shroud ²assembly has a door operable to close a passage defined at least by the ²orifice wall and ²a magnetic pocket on one of the orifice wall or the door including at least ²one open end ²to receive a magnetic assembly. The shroud assembly further has a striker ²pocket on ²one of the door or the orifice wall configured to contain a striker member. ²The door is ²separated from the monolithic shroud assembly and the striker pocket is placed ²²adjacent the magnet pocket.² ...

FAN PLENUM ASSEMBLY AND ATTACHMENT IN A MERCHANDISER

A fan plenum assembly for a merchandiser. The fan plenum assembly includes a plenum housing that defines an opening configured to receive a fan, and that has a side wall with a slot and a slot extension continuous with the slot. The slot has a major axis extending through a center of the slot. A bearing is configured to rotationally support a hinge pin and is coupled to the side wall. The bearing includes a positioning element that is disposed in the slot and in the slot extension. The positioning element is movable within the slot and the slot extension such that the bearing is movable along the major axis to permit axial adjustment of a position of the bearing relative to the plenum housing and the bearing is immovable rotationally relative to the plenum housing.

VARIABLE EFFECTIVE AREA FAN NOZZLE

A turbofan engine is provided having a fan and a core in flow communication with the fan. The turbofan engine also includes a nacelle assembly enclosing the fan and at least a portion of the core to define a bypass passage with the core. The nacelle assembly includes a fan cowl extending around the fan and a thrust reverser system. The thrust reverser system is movable between a fully stowed position, a partially deployed position, and a fully deployed position. The thrust reverser system is configured to be held in the partially deployed position to allow an additional amount of airflow to exit from the bypass passage.

FRONT ENCLOSURE WHICH IS SEALED DURING THE MODULAR DISMANTLING OF A TURBOJET WITH REDUCTION GEAR

Turboréacteur à double flux comportant une soufflante (S) entraînée, via un arbre de soufflante (3) porté par au moins deux premiers paliers (11, 12), par un arbre de turbine (4) porté par au moins un deuxième palier (10) comportant une bague fixe (25) et une bague mobile (26), ledit arbre de turbine entraînant ledit arbre de soufflante (3) au travers d'un dispositif de réduction de la vitesse de rotation (7), ledit dispositif de réduction de la vitesse de rotation et lesdits premiers et deuxième paliers étant logés dans une enceinte de lubrification (E1) dont l'enveloppe comprend des parties fixes et des parties mobiles reliées les unes aux autres par des moyens d'étanchéité (29, 30, 31), ledit dispositif de réduction comportant une roue d'entrée (27) conformée pour recevoir le couple transmis par ledit arbre de turbine par l'intermédiaire de moyens d'entraînement (8, 9) rattachés à ladite bague mobile,caractérisé en ce que l'enceinte de lubrification forme un anneau coaxial avec l'arbre ...

THERMAL ELECTRIC ASSEMBLY ATTACHED ON AN OUTER SURFACE OF A HOT SECTION OF A GAS TURBINE ENGINE TO GENERATE ELECTRICAL POWER

A gas turbine engine assembly may include a combustion chamber for igniting a fuel and air mixture that generates a core stream flow. The gas turbine engine may also include a hot section cowling for directing the core stream flow through the engine assembly. The hot section cowling may include an inside surface and an outside surface opposite the inside surface. The gas turbine engine assembly may additionally include a plurality of thermoelectric generator (TEG) assemblies that are thermally attached to the outside surface of the hot section cowling. Each TEG assembly may include a multiplicity of thermoelectric generator (TEG) devices that generate an electric current based on a temperature differential across each of the multiplicity of TEG devices. The TEG devices may include different materials that are used in different heat zones along the hot section cowling between the combustion chamber and an exhaust end of the engine.

ROTOR BLADE AND FAN

In the present invention a rotor blade main body (37) is equipped with multiple first composite sheet groups (51) and multiple second composite sheet groups (53) provided along the thickness direction (TD). Each first composite sheet group (51) has multiple composite sheets (49) overlapping from the blade thickness center (TC) toward the dorsal surface (39). Each second composite sheet group (53) has the multiple composite sheets (49) overlapping from the blade thickness center (TC) toward the ventral surface (41). The combined direction (CD) of the orientation directions of the reinforcing fibers of the multiple composite sheets (49) in each sheet group (51, 53) is inclined 20-45 degrees toward the rear edge with respect to the span direction (SD).

COUNTER-ROTATING FAN ARRANGEMENT AND FAN DRIVE SYSTEM FOR EVAPORATIVE COOLING EQUIPMENT

A counter-rotating fan system for evaporative cooling equipment. The system can include a first axial fan disposed in an air conduit of an evaporative equipment unit, a second axial fan disposed in the air conduit and arranged coaxially with the first fan, a transmission for driving the first axial fan and the second axial fan and a motor for driving the transmission, wherein the direction of rotation of the first axial fan is opposite to the direction of rotation of the second axial fan.

ICE DEFLECTOR FOR A FAN HOUSING

In various implementations, a fan system may include a housing and a fan. The fan may reside in an orifice of the housing. The fan system may include a grate disposed proximate a top surface and an ice deflector. The ice deflector may inhibit ice formation on portions of the housing, orifice, and/or fan residing in the orifice.

HIGH EFFICIENCY, LOW-NOISE, AXIAL FAN ASSEMBLY

A high efficiency fan (16) and stator arrangement for generating an airflow through a heat exchanger is disclosed herein. The fan (16) is rotated about its rotational axis by an electric motor, and includes eight blades (22) extending radially from a hub (54) to a circular band (38). Each fan blade (22) has a stagger angle and chord lengths which vary along the span of the blades (22). Each fan blade (22) also includes a trailing edge (60) having a flat surface extending along the edge. The flat surfaces of each fan blade a re coincident with a plane perpendicular to the rotational axis. The fan produc es an airflow when rotated about the rotational axis, wherein a component of th e airflow occurs at a first angle to the rotational axis. The fan support has a central bearing support and twenty elongated airfoils extending radially outward from the bearing support. Each airfoil has substantially the same length as the fan blades (22) and includes a curved airflow guiding surface having a ...

Axialgebläse.

Ventilateur axial

Verfahren zur Herstellung von Axialventilatoren mit unterschiedlichen Durchmessern in Baukastenweise

Axialströmungsapparat

Schaufelanordnung an Axialverdichter, Gebläse oder Ventilator

INSTALLATION FAN.

Axial small fan.

Refrigerator with active air circulation.

Das Kühlgerät besitzt ein plattenförmiges Rückwandelement (3a, 3b, 4, 5), das an der Rückseite des Nutzraums angeordnet ist und welches einen Kühlluftkanal (6a) bildet. Im Rückwandelement (3a, 3b, 4, 5) ist weiter ein Ventilator (10) angeordnet, mit welchem die Luft vom Nutzraum durch den Kühlluftkanal (6a) und wieder zurück in den Nutzraum gefördert werden kann. Dabei wird sie von einem Kühlelement (40), welches an oder im Kühlluftkanal (6a) angeordnet ist, gekühlt. Die Einlasse und die Auslässe des Kühlluftkanals (6a) sind dabei an den Kanten des Rückwandelements (3a, 3b, 4, 5) angeordnet.

FAN AND ASSOCIATED SUPPORT ELEMENT

Axial flow fan

The invention refers to an axial flow fan which can realize small noise and high hydrostatic pressure. A leading edge (12a) of a rotating blade (12) of an impeller (10) is formed in an arc recessed in a direction opposite to a rotating direction of the impeller. An angle (1) where an extended line of the recessed arc of the leading edge (12a) meets another extended line of a curve of a side edge (12b) is set in an acute angle of 30 to 37 degrees in a front view so that a leading tip of the rotating blade may be projected in the rotating direction. An opening angle (3) of a suction-side slant portion (31) of a venturi casing is set in the range of 12 to 17 degrees and an opening angle ( 4 ) of a discharge-side slant portion (33) is set in the range of 30 to 35 degrees.

Cooling tower axial flow fan with hollow disc/annular structure

VARIABLE PITCH FAN ASSEMBLY WITH BLADE PITCH INDICATION

Fan and motor mechanism thereof

Fan motor

Double electric fan

Air purifier

Ventilation device

Turbine rotor blade, integral vane disk, with its associated compressor rotor and fan rotor

TRANSFORMER ASSEMBLY WITH IMPROVED AIR COOLING

REDUCED PROPELLER HUB FOR FAN OF A MOTOR VEHICLE

PROCEDE DE FONCTIONNEMENT D'UNE TURBOMACHINE AXIALE ET MACHINE DE CE GENRE POUR LA MISE EN OEUVRE DU PROCEDE

L'INVENTION CONCERNE UN PROCEDE DE FONCTIONNEMENT D'UNE TURBOMACHINE AXIALE COMPORTANT UN ROTOR MUNI D'UN MOYEU ET AUQUEL EST ADJOINTE UNE ENVELOPPE PAR EXEMPLE CYLINDRIQUE. PROCEDE CARACTERISE PAR LE FAIT QUE D'UNE PART, DANS LA REGION DU MOYEU DU ROTOR EXPOSEE AU DETACHEMENT, AFIN DE DIMINUER LA DEVIATION DE L'ECOULEMENT RELATIF ET DONC AUSSI LA CHARGE DE LA GRILLE D'AUBES, ON DIMINUE L'APPORT D'ENERGIE DANS LES SECTIONS DE PROFIL CORRESPONDANTES EN DIMINUANT LA VARIATION DE LA COMPOSANTE CIRCONFERENTIELLE DE L'ECOULEMENT ABSOLU C ENTRE L'ENTREE ET LA SORTIE DU ROTOR ET QUE D'AUTRE PART, DANS CES SECTIONS DE PROFIL, ON FOURNIT UN SUPPLEMENT D'ENERGIE AVANT ETOU APRES LE ROTOR POUR MAINTENIR APPROXIMATIVEMENT CONSTANTE DANS TOUTES LES SECTIONS D'AUBES LA QUANTITE D'ENERGIE RESULTANT DE LA CONCEPTION.

MOTOVENTILATEUR OF COOLING

AXIAL VENTILATOR, IN PARTICULAR FOR EQUIPMENTS DE DUST EXTRACTION IN THE UNDERGROUND CONSTRUCTION INDUSTRIES AND TUNNELS

AUTOMOTIVE FAN COMPRISING A STATOR UPSTREAM OF THE PROPELLER

Flat wall-mounted electric fan for electronic equipment - has resilient disc sealing end of channel formed through centre of rotor

BLOWER OBJECT CREATOR HAS REDUCED THE REACTION TORQUE.

L'invention concerne un souffleur portatif (10) comprenant : - un ventilateur axial de soufflage (16) - une poignée (12) présentant un point médian d'équilibre (E) - une buse de soufflage connectée en aval du ventilateur axial, - au moins une tuyère d'aspiration (32) connectée en amont du ventilateur axial et présentant une bouche d'admission d'air (34). Conformément à l'invention la tuyère d'admission d'air comprend un réseau (42) de canaux directionnels (44) d'homogénéisation d'un flux d'air d'admission, le réseau de canaux directionnels étant ménagé au voisinage de la bouche d'admission d'air (34). L'invention trouve des applications notamment dans le domaine des souffleurs électroportatifs pour l'entretien des espaces publics.

INTERNAL COMBUSTION ENGINE AND COOLING SYSTEM

Ventilator unit for heat exchanger for automotive vehicle air-conditioning system, has fan directly facing heat exchanger

L'invention concerne un groupe moto-ventilateur, destiné notamment à faire circuler un flux d'air dans un échangeur de chaleur (2) de véhicule automobile. Il comprend une hélice (6) ayant un bord d'attaque (22) et un bord de fuite (24) montée tournante sur un stator (8). Des éléments aérodynamiques (9) du stator (8) sont placés entre l'échangeur de chaleur (2) et le bord d'attaque (22) lorsque le groupe moto-ventilateur (4) se trouve en position de fonctionnement en regard de l'échangeur (2). La distance (32) entre le bord d'attaque et les éléments aérodynamiques est voisine du tiers de la corde de l'hélice.

FAN JET [...] FIRE-FIGHTING

Un ventilateur (1) pour la lutte contre l'incendie comprend une hélice (2) montée coaxiale dans une enveloppe tubulaire (3) pour produire un jet d'air axial. Le ventilateur (1) comprend un dispositif de guidage (9) de flux d'air prévu dans l'enveloppe (3) pour obtenir un jet d'air concentré à section sensiblement ovalisée ...

Motor fan unit, particularly for cooling a motor vehicle

L'invention propose un groupe motoventilateur du type axial comportant un moteur dont l'arbre de sortie du rotor porte une hélice (18, 24) qui est reçue dans une buse (12) d'un panneau sur lequel est fixé le moteur, caractérisé en ce que les dimensions de la buse (12) sont adaptées au diamètre extérieur et aux caractéristiques aérodynamiques d'une première hélice (18) et en ce qu'il est prévu au moins une virole intermédiaire (26) susceptible d'être montée dans la buse (12) pour permettre son adaptation aux caractéristiques d'au moins une deuxième hélice (24) de plus petites dimensions.

Ventilator blower assembly for underground railway tunnel - has funnel-shaped wall forming diffusion chamber and intake

제빙 효율이 개선된 제빙장치

... 제빙 효율이 개선된 제빙장치가 개시된다. 본 발명의 일 실시예에 따르면, 물을 제빙하는 아이스 트레이; 냉기를 제공받아 상기 냉기를 상기 아이스 트레이 하부에 공급하는 제빙 덕트부; 상기 아이스 트레이의 하부에 회전 가능하게 설치되어 상기 제빙 덕트부에서 공급된 냉기를 이송시키는 스크롤팬 유닛; 및 상기 아이스 트레이의 하부에 배치되어 상기 스크롤팬 유닛에 의해 이송되는 냉기가 상기 아이스 트레이의 하부 전체에 골고루 공급되도록 유도하는 냉기 가이드부를 포함하는 제빙 효율이 개선된 제빙장치가 제공될 수 있다.

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 ...

Variable performance vaneaxial fan with high efficiency

The design of a high efficiency, variable performance vaneaxial fan, requires the utilization of typical fan and single stage compressor design methodologies. To be able to replace multiple fans, the variable vaneaxial fan design must be capable of operation at several different flow rates and total pressures. These operation points can be met by varying motor revolutions per minute (RPM) or geometric parameters such as the hub diameter, tip diameter, as well as blade geometry including number of blades, pitch, spacing, and length. An ideal design with variable performance can replace a family of current fan designs by providing the capability for efficient operation over a range of flow rates and total pressures. This level of variability would not only allow the fan to respond to changing environmental conditions but also to be fit into systems with different characteristics.

Fan device

A fan device includes an impeller, a motor, a fan frame, a circuit board and a covering member. The motor is used for driving rotation of the impeller. The fan frame includes an axial-flow channel for accommodating the impeller and the motor and includes a receptacle. The receptacle is defined by two airflow inlet/outlet plates, one channel wall and two lateral plates. The circuit board is accommodated within the receptacle. The covering member is used for sheltering the receptacle.

Method of detecting and controlling stall in an axial fan

A method of detecting stall in an axial fan through acoustical measurements in air the air flow, includes measuring the sound emanating from the flow adjacent the fan, preparing a visual representation of the sound, comparing the visual representation with a library of fixed visual representations derived from a plurality of tests representative of the performance of the fan under a range of operating parameters, selecting the fixed visual representation most closely matching the visual representation of the said sound, and deriving a control signal from the selected fixed visual representation. The visual representations are formed by a symmetrised dot pattern (SDP) technique.

Transformer assembly with enhanced air cooling

A cooling system for a transformer comprises a fan duct and a housing which together enclose an interior space. A transformer located in the interior space is mounted on the fan duct, and has a plurality of core sections surrounded by windings and separated by gaps. An air channeling structure is located between the transformer and the fan duct. A cooling airflow path extends through the air channeling structure, and between core sections of the transformer.

Control system and method for fan

A safety control method for a fan includes: capturing an image of an object next to the fan and gathering distances between a plurality of points on the object and a depth-sensing camera, obtaining the distance between the object in the scene and the fan, comparing the distance between the object and the fan against a first preset value, and cutting off power to the fan when the distance between the object and the fan is less than the first preset value.

Fan array fan section in air-handling systems

A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.

FAN, MOLDING DIE, AND FLUID FEEDER

A cross-flow fan includes a plurality of fan blades. The fan blade has an inner edge portion arranged on an inner circumferential side and an outer edge portion arranged on an outer circumferential side. In the fan blade, a blade surface extending between the inner edge portion and the outer edge portion and constituted of a positive pressure surface and a negative pressure surface is formed. The fan blade has such a blade cross-sectional shape that a large-thickness portion at which a thickness between the positive pressure surface and the negative pressure surface is greatest is arranged closer to the inner edge portion. A recess recessed in the blade surface is formed at a position closer to the inner edge portion where the large-thickness portion is arranged, than to the outer edge portion. 1. A fan , comprising:a plurality of vane portions having an inner edge portion arranged on an inner circumferential side and an outer edge portion arranged on an outer circumferential side and provided at a distance from one another in a circumferential direction,said vane portion having a blade surface formed, which extends between said inner edge portion and said outer edge portion and is constituted of a positive pressure surface arranged on a side of a direction of rotation of the fan and a negative pressure surface arranged on a back side of said positive pressure surface,a fluid flow which flows between said inner edge portion and said outer edge portion being generated over said blade surface as the fan rotates,said vane portion having such a blade cross-sectional shape that a large-thickness portion at which a thickness between said positive pressure surface and said negative pressure surface is greatest is arranged closer to any one of said inner edge portion and said outer edge portion when it is cut in a plane orthogonal to a rotation axis of the fan, anda recess recessed in said blade surface being formed at a position closer to any one of said inner edge portion ...

AXIAL FLOW FAN

An axial flow fan, with which effective work of blades is ensured and blade tip vortices are suppressed, thereby reducing noise. The axial flow fan includes blades, which are each formed such that a chord centerline connecting chord center points from inner to outer peripheral ends of the blade is curved so as to protrude toward a downstream side in a whole region. 1. An axial flow fan comprising:a boss that rotates about a shaft center; anda plurality of blades disposed in an outer peripheral portion of the boss,wherein the blades are each formed such that a chord centerline connecting chord center points from an inner peripheral end of the blade to an outer peripheral end of the blade is curved so as to protrude toward a downstream side of an air flow in a whole region of the blade in a radial direction.2. The axial flow fan of claim 1 , whereinthe chord centerline of each blade is divided into a first region and a second region in a range of the blade from the inner peripheral end to the outer peripheral end,in the first region, the blade is formed such that the chord centerline is curved so as to be directed toward the downstream side of the air flow as the chord centerline extends toward an outer peripheral side and so as to protrude toward the downstream side, andin the second region, the blade is formed such that the chord centerline is curved so as to be directed toward an upstream side of the air flow as the chord centerline extends toward the outer peripheral side and so as to protrude toward the downstream side.3. The axial flow fan of claim 2 , {'br': None, 'i': Ro', 'Rt−Rb, '0.55 Подробнее

IMPELLER

A combined fan-compressor impeller comprises a single hub and a plurality of spaced main blades extending outwardly from the hub such that an air passage channel is defined between two of the main blades. Each of the main blades is a mixed flow blade which continuously extends from a fan section at an inlet end of a channel to a compressor section at an outlet end of the channel without any axial clearance between the fan section and the compressor section, providing aerodynamic matching of pressurized air flowing through the channel from the fan section to the compressor section. 1. A combined fan-compressor impeller , comprising a single hub and a plurality of spaced main blades extending outwardly from said hub , an air passage channel being defined between two of said main blades , wherein each of said main blades is a mixed flow blade which continuously extends from a fan section at an inlet end of a channel to a compressor section at an outlet end of said channel without any axial clearance between said fan section and said compressor section , thereby providing aerodynamic matching of pressurized air flowing through said channel from said fan section to said compressor section.2. The impeller according to claim 1 , wherein the main blade comprises a fan portion and an elongated compressor portion having a blade height from the hub which is significantly less than that of said fan portion.3. The impeller according to claim 2 , wherein one portion of pressurized air exits the impeller via a first outlet from a trailing edge of the fan portion leading to a bypass duct.4. The impeller according to claim 3 , wherein another portion of pressurized air exits the impeller via a second outlet through a compressor section end of the channel.5. The impeller according to claim 1 , further comprising one or more splitter blades claim 1 , each of said splitter blades extending outwardly from the hub and positioned between two adjacent main blades.6. The impeller according ...

Filter mounts for a portable fan and methods for mounting a filter to a portable fan

A filter frame is removably attachable to a box fan. The filter frame is adapted for receiving a standard HVAC-style filter for removing contaminants from air flow induced by the fan. In this manner, a cost-effective means for filtering a flow of air is provided for residential and commercial settings. The filter frame is adaptable to a variety of standard box fan types of different styles and dimensions. The frame is configured to accommodate standard filters, such as those readily available from retail hardware stores and home centers.

Recirculation fan and fan assembly thereof

A recirculation fan includes a casing, a covering member, and a fan assembly. The casing has a base. The covering member is coupled with the casing to define an accommodation space. The fan assembly is disposed within the accommodation space, and includes a first impeller, a second impeller, a motor, and a plurality of magnetic elements. The second impeller is located beside the first impeller. The motor is fixed on the base of the casing and connected with the first impeller for driving rotation of the first impeller. The magnetic elements are arranged between the first impeller and the second impeller. A wind force generated by the first impeller and a magnetic torque resulted from a magnetic vortex of the magnetic elements cause contactless rotation of the second impeller.

Recirculation fan and wind-guiding device thereof

A recirculation fan includes a casing, a covering member, a wind-guiding device, a passive impeller, and an active impeller. The covering member is coupled with the casing to define an accommodation space. The wind-guiding device is disposed on the covering member, and includes a wind-guiding cover and a magnetoresistive structure. The magnetoresistive structure is disposed on the covering member and the wind-guiding cover. The passive impeller is disposed within the accommodation space. The active impeller is disposed within the accommodation space and located beside the passive impeller for generating a wind to drive rotation of the passive impeller and the wind-guiding cover. In response to a magnetic torque resulted from a magnetic vortex of the magnetoresistive structure, a rotating speed of the wind-guiding cover is slowed down.

Air-extracting type heat dissipating apparatus

An air-extracting type heat dissipating apparatus includes a frame, a fan body, a plurality of air-inhaling holes and a plurality of air-exhaling holes. The side portion of the frame has an accommodating space. The fan body is disposed in the frame and has a first side and a second side. The air-inhaling holes are disposed on the side portion of the frame in corresponding to the accommodating space. The air-exhaling holes are disposed on the frame and located on the second side. An air is inhaled into the accommodating space through the air-inhaling holes, and exhaled to the first side through the air-exhaling holes, and then it is exhaled to the second side by the fan body.

IMPELLER FOR AXIAL FLOW FAN AND AXIAL FLOW FAN USING THE SAME

There is provided an impeller for an axial flow fan, which includes a plurality of blades arranged in a circumferential direction. In each of the blades, with respect to a center point of a chord length of the blade, a leading edge side shape of the blade and a trailing edge side shape of the blade are line-symmetric, and a shape of the blade at one face side is different from a shape of the blade at the other face side. 1. An impeller for an axial flow fan , comprising:a plurality of blades arranged in a circumferential direction, with respect to a center point of a chord length of the blade, a leading edge side shape of the blade and a trailing edge side shape of the blade are line-symmetric, and', 'a shape of the blade at one surface side is different from a shape of the blade at the other surface side., 'wherein in each of the blades,'}2. The impeller according to claim 1 ,wherein the shape of the blade at the one surface side is defined by a concave shape having an arc shape with a predetermined radius of curvature, andwherein the shape of the blade at the other surface side is defined by a convex shape having an arc shape with a predetermined radius of curvature.3. The impeller according to claim 1 ,wherein the one face side is a pressure surface side during a normal rotation of the impeller.4. An axial flow fan comprising:an impeller including a plurality of blades arranged in a circumferential direction;a motor configured to rotate the impeller; anda casing which accommodates the impeller, and includes a base portion supporting the motor, with respect to a center point of a chord length of the blade, a leading edge side shape of the blade and a trailing edge side shape of the blade are line-symmetric, and', 'a shape of the blade at one surface side is different from a shape of the blade at the other face side., 'wherein in each of the blades,'}5. The axial flow fan according to claim 4 ,wherein the shape of the blade at the one surface side is defined by a ...

CANTILEVER FAN

A cantilever fan including a cantilever blade that is clamped at one end. The fan includes an actuator that applies a periodic force to the blade resulting in periodic deflections of the blade. 1. A cantilever fan , comprising:a cantilever blade, wherein the blade is clamped at one end and includes a blade tip located at the furthest point on the blade from the clamped end;wherein the blade tip is free to oscillate;wherein the blade has a length that extends from the clamped end to the blade tip;an actuator having at least one component that does not oscillate with the blade and is nearly stationary with respect to the clamped end of the blade;wherein the actuator applies a periodic force to the blade at a location along the length of the blade resulting in periodic deflections of the blade.2. The cantilever fan of wherein the actuator is configured to provide the periodic force at a frequency that is equal to or near the preferred vibrational mode of the blade.3. The cantilever fan of further comprising:a mass attached to the cantilever blade;wherein the mass is configured to provide enhanced stability of the blade oscillations by reducing the excitement of the blade's higher mechanical modes.4. The cantilever fan of whereinthe cantilever blade includes at least one leg section and a paddle section with the paddle section being most distal to the clamped end of the blade and the leg section connecting the paddle section to the blade clamp;wherein, during operation of the fan, the leg section is configured to bend more than the paddle section.5. The cantilever fan of further comprising:a mass attached to the cantilever blade.6. A cantilever fan claim 4 , comprising:a cantilever blade clamped at one end with a clamp assembly;an actuator that applies periodic forces to the clamp assembly;wherein the actuator's periodic forces cause the clamp assembly to oscillate and wherein the oscillation of the clamp assembly causes a periodic force to be applied to the blade ...

FAN DEVICE

A fan device includes a rotor and recesses to be filled with claylike weights The rotor includes an impeller and a shaft The impeller has a hub and vanes The recesses are provided on a surface that crosses an axial direction of the hub Each recess has a first area and a second area The first area is circumferentially arranged and extends in a substantially circumferential direction. The second area is connected to an outer circumferential side of the first area and has a shorter length in the circumferential direction than the first area The weight is closely adhered to wall surfaces and formed along a radial direction in the second area so as to prevent separation thereof. 1. A fan device comprising:an impeller having a hub and vanes which are provided at an outer circumferential portion of the hub;a shaft being provided at a center of the hub; anda rotor including the impeller and the shaft and being supported so as to be rotatable around the shaft,wherein the rotor is provided with at least one recess for attaching a balance weight, the recess has a first area and at least one second area, the first area is located on a circumference having the shaft as a center and extends in a substantially circumferential direction, the second area is connected to the first area and has a shorter length in the circumferential direction than the first area.2. The fan device according to claim 1 , wherein the recess is formed on a surface that crosses an axial direction of the rotor.3. The fan device according to claim 1 , wherein the recess is formed on a surface that is parallel to an axial direction of the rotor.4. The fan device according to claim 1 , wherein the balance weight is attached to at least one second area.5. The fan device according to claim 4 , wherein the balance weight is a curable resin which is cured after being adhered to the recess in uncured state.6. The fan device according to claim 5 , wherein the curable resin is a thermosetting resin or a two part ...

Aluminum airfoil

A method of making an aluminum airfoil includes brazing a first airfoil piece and a second airfoil piece together using a braze material that includes an element selected from magnesium and zinc, to form a braze joint between the first airfoil piece and the second airfoil piece. At least one of the first airfoil piece or the second airfoil piece has an aluminum alloy composition that includes greater than 0.8% by weight of zinc.

COOLING FAN

A cooling fan includes a boss section () connected to a rotary drive source, a plurality of blades () protruding outward from the boss section in a radial direction, and a cylindrical ring member () configured to annularly connect the vicinities of end sections outside in the radial direction of the plurality of blades. The plurality of blades () protruding outward from the boss section () in the radial direction are connected by the cylindrical ring member () in the vicinity of the end section outside in the radial direction. An air inlet groove () is formed at an end section in an axial direction of an air suction side of the ring member (). The air inlet groove () is disposed between front regions in the rotation direction of all of the blades () on the ring member () and front regions in the rotation direction of the blades () adjacent thereto. The air flowing from the outer circumferential side passes through the air inlet groove () of the ring member () and gradually changes a direction to be suctioned between the blades (). 1. A cooling fan , comprising:a boss section connected to a rotary drive source;a plurality of blades protruding outward from the boss section in a radial direction; anda cylindrical ring member configured to annularly connect the vicinities of end sections outside in the radial direction of the plurality of blades,wherein an air inlet groove is formed at an end section in an axial direction of an air suction side of the ring member.2. The cooling fan according to claim 1 , wherein the air inlet groove is disposed between front regions in the rotation direction of all of the blades on the ring member and front regions in the rotation direction of the blades adjacent thereto.3. The cooling fan according to claim 2 , wherein a lightening groove is formed at the end section in the axial direction of the air ejection side of the ring member to deviate from the air inlet groove in a circumferential direction.4. The cooling fan according to ...

Vibration Isolating Engine Cooling Fan

An axial fan assembly includes a hub, a plurality of connection structures, and a plurality of isolated members. The hub is rotatable about an axis of rotation and includes a radially extending face and a cylindrical portion extending axially from the face. The face includes a radially inner face portion and a radially outer face portion. The plurality of connection structures extends radially inwardly from the radially outer face portion and extends radially outward from the radially inner face portion. The plurality of isolated members extends radially outwardly from the radially inner face portion and is isolated from the plurality of connection structures and from the radially outer face portion by a plurality of slots. 1. An axial fan assembly comprising:a hub rotatable about an axis of rotation and including a radially extending face and a cylindrical portion extending axially from said face, said face including a radially inner face portion and a radially outer face portion;a plurality of connection structures extending radially outwardly from said radially inner face portion and extending radially inwardly from said radially outer face portion; anda plurality of isolated members extending radially outwardly from said radially inner face portion, said plurality of isolated members being isolated from said plurality of connection structures and said radially outer face portion by a plurality of slots.2. The axial fan assembly of claim 1 , further comprising:a plurality of connection tabs extending radially inwardly from said radially outer face portion,wherein each connection tab of said plurality of connection tabs defines an aperture, andwherein each of said apertures extends through one of said connection tabs of said plurality of connection tabs.3. The axial fan assembly of claim 1 , wherein at least one connection structure of said plurality of connection structures defines an aperture extending through said at least one connection structure.4. The axial ...

Evaporative cooling apparatus and methods

An evaporative cooling apparatus includes a liquid reservoir and a pump coupled to the liquid reservoir. The pump includes a pressure output that applies a static pressure against the liquid stored in the liquid reservoir. The applied pressure forces liquid through a liquid supply line to a nozzle unit, and the liquid is ejected into a stream of forced air from a fan for evaporative cooling applications. The pressure output is also in fluid communication with the nozzle unit via a gas supply line extending between the pressure output and the nozzle unit for delivering gas into the nozzle unit. The gas delivered to the nozzle unit interacts with the liquid inside the nozzle unit to generate the atomized spray of liquid droplets.

FAN ARRAY FAN SECTION IN AIR-HANDLING SYSTEMS

A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration. 1. A fan array fan section in an air-handling system to supply air to a building , comprising:an air handling compartment having a discharge plenum configured to deliver air to a ventilation system for at least a portion of the building;a fan array of fan units positioned in the air handling compartment, the fan units configured to be ON and OFF;wherein the air handling compartment includes multiple chambers arranged in an array where at least a portion of the chambers are located proximate to one another in at least one row or column, wherein the fan units are positioned in corresponding chambers of the air handling compartment; andan array controller configured to meet a first air demand by operating all of the fan units at a first fan speed and to meet the first air demand by operating a subset of the fan units at a second fan speed.2. The fan array fan section of claim 1 , further comprising sound attenuation layers within the corresponding chambers.3. The fan array fan section of claim 2 , wherein the sound attenuation layers include a perforated facing and at least one layer of insulation material.4. The fan array fan section of claim 2 , wherein the sound attenuation layers include sound insulation means for attenuating sound and securing means for preventing the sound insulation means from being drawn into the corresponding chamber.5. The fan array fan section of claim 2 , wherein the sound attenuation layers ...

AXIAL FLOW FAN

The present invention provide an axial flow fan which comprises an impeller having a plurality of blades, a motor arranged to rotate the impeller, a casing accommodating the impeller and the motor, and a lead wire for supplying electric power to the motor, wherein the casing comprises a cylindrical housing, a motor base installing the motor, and a plurality of spokes connecting the housing with the motor base, and wherein the plurality of spokes include a spoke having a straight shape and a spoke having a curved shape convexly toward a rotational direction of the impeller. 1. An axial flow fan comprising:an impeller having a plurality of blades;a motor arranged to rotate the impeller;a casing accommodating the impeller and the motor; anda lead wire for supplying electric power to the motor,wherein the casing comprises a cylindrical housing, a motor base installing the motor, and a plurality of spokes connecting the housing with the motor base, and wherein the plurality of spokes include a spoke having a straight shape and a spoke having a curved shape convexly toward a rotational direction of the impeller.2. The axial flow fan according to claim 1 , wherein the spoke having the straight shape and the spoke having the curved shape are provided so that when a radial length of the spoke having the straight shape is defined as L and an amount of the curvature of the spoke having the curved shape is defined as X claim 1 , a displacement of the curved shape (X/L) is less than 0.2.3. The axial flow fan according to claim 1 , wherein the lead wire is disposed on the spoke having the straight shape.4. The axial flow fan according to claim 1 , wherein the plurality of spokes include one of the spoke having the straight shape and three of the spokes having the curved shape. The present invention relates to an axial flow fan, and in particular, an axial flow fan used for cooling electronic device(s) or the like.Generally, in an electronic device such as personal computers, ...

Slim fan

A slim fan includes a casing, a fan module and a ring cover. The casing includes an upper casing which has an opening, and a lower casing. The fan module includes a plurality of fans annularly disposed in the opening, and each of the fans has a first side and a second side opposite to each other. The ring cover is connected to the first side of the fans and exposed out of the opening. The height of the fans is equal to that between the upper casing and the lower casing.

IMPELLER AND FAN

An impeller applied to a fan is disclosed. The impeller includes a hub, a plurality of centrifugal blades and a plurality of axial blades. One end of each of the centrifugal blades is disposed around the circumference of the hub. The axial blades are respectively connected to the other end of a part of the centrifugal blades. A fan applying the impeller is also disclosed. 1. An impeller applied to a fan , comprising:a hub;a plurality of centrifugal blades, wherein one end of each of the centrifugal blades is disposed around circumference of the hub; anda plurality of axial blades, wherein the other end of a part of the centrifugal blades is connected to the axial blades, respectively.2. The impeller according to claim 1 , wherein the number of the axial blades is less than or equals to the number of the centrifugal blades.3. The impeller according to claim I claim 1 , wherein each of the centrifugal blades and the connected axial blades are integrally formed.4. The impeller according to claim 1 , wherein the hub claim 1 , the centrifugal blades and the axial blades are integrally formed.5. The impeller according to claim 1 , wherein the other end of the centrifugal blades is respectively connected to a connecting element.6. An impeller applied to a fan claim 1 , comprising:a hub; anda plurality of composite blades disposed around circumference of the hub, wherein each of the composite blades extends from the hub and includes a centrifugal part and an axial part in sequence.7. The impeller according to claim 6 , wherein the impeller further includes:a plurality of centrifugal blades staggerly disposed with the composite blades.8. The impeller according to claim 6 , wherein the hub and the composite blades are integrally formed.9. The impeller according to claim 6 , wherein the impeller further includes:a connecting clement connected to the centrifugal part or a connecting part between the centrifugal part and the centrifugal part.10. A fan claim 6 , comprising: a hub ...

Cross flow fan and indoor unit of air-conditioning apparatus

An impeller element includes a plurality of blades disposed along an outer circumference of a circular support plate. Each blade is divided into a plurality of blade sections in a rotational axis direction. At least one of the divided blade sections as a long-chord blade section is configured such that a chord as a line segment connecting a blade outer-circumferential edge and a blade inner-circumferential edge of the blade in a cross section perpendicular to a rotational axis of the blade has a greater length than a chord of another one of the blade sections as a short-chord blade section. The blade inner-circumferential edge of the at least one long-chord blade section having the longer chord protrudes toward the inner circumferential side, relative to the blade inner-circumferential edge of the at least other one of the blade sections as the short-chord blade section having the shorter chord.

FAN ASSEMBLY

A fan assembly includes a nozzle and a device for creating an air flow through the nozzle. The nozzle includes an interior passage, a mouth for receiving the air flow from the interior passage, and a Coanda surface located adjacent the mouth and over which the mouth is arranged to direct the air flow. The mouth and the Coanda surface extend about an axis. The Coanda surface comprises a diffuser portion, the angle subtended between the axis and the diffuser portion of the Coanda surface varying about the axis. 1. A fan assembly comprising a nozzle and a device for creating an air flow through the nozzle , the nozzle comprising an interior passage , a mouth for receiving the air flow from the interior passage , and a Coanda surface located adjacent the mouth and over which the mouth is arranged to direct the air flow , wherein the mouth and the Coanda surface extend about an axis , and wherein the Coanda surface comprises a diffuser portion , the angle subtended between the axis and the diffuser portion varying about the axis.2. The fan assembly of claim 1 , wherein the Coanda surface is continuous about the axis.3. The fan assembly of claim 1 , wherein the angle varies along the surface between at least one maximum value and at least one minimum value.4. The fan assembly of claim 1 , wherein the angle varies along the Coanda surface between a plurality of maximum values and a plurality of minimum values.5. The fan assembly of claim 3 , wherein the maximum value is at least twice the minimum value.6. The fan assembly of claim 3 , wherein the minimum value is in the range from −15° to 15°.7. The fan assembly of claim 3 , wherein the maximum value is in the range from 20 to 35°.8. The fan assembly of claim 3 , wherein the angle is at a minimum value at at least one of an upper extremity and a lower extremity of the Coanda surface.9. The fan assembly of claim 1 , wherein the angle subtended between the axis and the diffuser portion of the Coanda surface varies ...

Axial fan and control method thereof

An axial fan includes a fan frame, an impeller and a motor. The fan frame has a frame body, a base and plural connecting members. The base is disposed at the center of a side of the frame body. The connecting members connect the frame body to the base. The impeller is accommodated in the frame body and disposed on the base. The impeller has a rotating shaft, a hub and plural blades disposed around the hub. The motor is disposed on the base and connects with the rotating shaft to drive the impeller to rotate. When the impeller rotates forwardly, the airflow is induced to flow through the connecting members, blades, and one side of the frame body away from the base. When the impeller rotates reversely, the airflow is induced to flow through the side of the frame body, blades and connecting members.

CEILING FAN

A ceiling fan includes a suspending unit and a ceiling fan body. The ceiling fan body includes a shaft; a motor; a plurality of blades; an upper body cover having a first opening, at a central part, for passing the shaft therethrough, and a second opening outside the first opening; and a lower body cover. The upper body cover rotates with the blades and has a first wall standing vertically between the first opening and the second opening. 1. A ceiling fan comprising:a suspending unit fixed to a ceiling; and a shaft configured to be suspended by the suspending unit;', 'a motor fixed at a bottom of the shaft;', 'a plurality of blades attached to the motor;', 'an upper body cover disposed on an upper surface of the motor; and', 'a lower body cover covering the motor,', 'the upper body cover having a first opening at a central part for passing the shaft therethrough, and a second opening outside the first opening,', 'wherein the upper body cover rotates with the blades and has a first wall standing vertically between the first opening and the second opening., 'a ceiling fan body suspended by the suspending unit, the ceiling fan body including2. The ceiling fan of claim 1 , whereinthe upper body cover has a first inclined surface inclining downward in an outward direction between the first opening and the first wall.3. The ceiling fan of claim 1 , whereinthe first wall is adjacent to the second opening.4. The ceiling fan of claim 1 , whereinthe upper body cover has a second inclined surface outside the first wall, inclining downward in the outward direction from the first wall; andthe second opening is formed in the second inclined surface.5. The ceiling fan of claim 1 , whereinthe upper body cover further includes a second wall standing around the shaft along a periphery of the first opening.6. The ceiling fan of claim 1 , further comprising:an outer cover covering a periphery of the suspending unit and the upper body cover.7. The ceiling fan of claim 2 , whereinthe ...

Geared Architecture for High Speed and Small Volume Fan Drive Turbine

A gas turbine engine includes a flex mount for a fan drive gear system. A very high speed fan drive turbine drives the fan drive gear system.

AXIAL FAN

The invention relates to an axial fan for delivering cooling air, in particular for an internal combustion engine of a motor vehicle, comprising fan blades which are fastened to a hub and which have a pressure side and a suction side and a trailing edge and a blade depth, on the pressure side of which fan blades is arranged a hub ramp which rises counter to the direction of rotation of the axial fan, wherein the trailing edge has an outer region situated radially outside the hub ramp and has an inner region situated radially within the hub ramp. 1. An axial fan for delivering cooling air , in particular for an internal combustion engine of a motor vehicle , comprising fan blades which are fastened to a hub and which have a pressure side and a suction side and a trailing edge and a blade depth , on the respective pressure side of which fan blades is arranged a hub ramp which rises counter to the direction of rotation of the axial fan , wherein the trailing edge has an outer region situated radially outside the hub ramp and has an inner region situated radially within the hub ramp , wherein the trailing edge has , in the outer region radially outside the hub ramp , a profile which continues in substantially unchanging fashion radially inward across the radial position of the hub ramp into the inner region , and which , in the radially innermost region , runs toward the hub.2. The axial fan as claimed in claim 1 , wherein the radially innermost region is the radially inner component of the radius of the radially inner region.3. The axial fan as claimed in claim 2 , wherein the component is approximately one third claim 2 , approximately one quarter or preferably less than approximately one fifth of the radius of the inner region of the trailing edge.4. The axial fan as claimed in claim 1 , wherein the blade depth in the inner region corresponds to the blade depth in the outer region.5. The axial fan as claimed in claim 1 , wherein the trailing edge is formed as a ...

AXIAL FLOW FAN

An axial flow fan includes: an impeller, a hub of which is attached to a rotation shaft of a rotation driving device; and a venturi casing that surrounds an outer circumference in a radial direction of the impeller and includes a suction port and a discharge port facing each other in an axial direction of the rotation shaft. A positive pressure surface of a plurality of blades integrally attached to the hub includes a plurality of step portions that is curved so as to comply with a curved shape of a front edge portion in a rotation direction of the blades. 1. An axial flow fan comprising:an impeller, a hub of which is attached to a rotation shaft of a rotation driving device; anda plurality of blades integrally attached to the hub, wherein a positive pressure surface of the plurality of blades includes a plurality of step portions that is curved so as to comply with a curved shape of a front edge portion in a rotation direction of the blades.2. An axial flow fan comprising:an impeller, a hub of which is attached to a rotation shaft of a rotation driving device; anda venturi casing that surrounds an outer circumference in a radial direction of the impeller, and includes a suction port and a discharge port facing each other in an axial direction of the rotation shaft,wherein a positive pressure surface of the plurality of blades integrally attached to the hub includes a plurality of step portions that is curved so as to comply with a curved shape of a front edge portion in a rotation direction of the blades.3. The axial flow fan according to claim 1 ,wherein the respective step portions are extended and curved from an inner circumferential portion of each blade to an outer circumferential portion thereof, in the positive pressure surface of each blade.4. The axial flow fan according to claim 1 ,wherein the step portion located on a rear edge portion side of the blade is curved so that a curvature thereof is reduced compared to a step portion located on a front edge ...

DIAGONAL FAN

The invention relates to a diagonal fan for gaseous media, with a diagonal impeller () having a carrier plate () with several vanes () arranged thereon, with a guide device () that is connected downstream to the diagonal impeller () for increasing the pressure of the medium, and with a cover plate (), which encloses the carrier plate () radially and which extends, at least in sections, axially along the carrier plate (), wherein a gap () is formed between the vane ends () of the vanes () on the carrier plate (), which extend towards the cover plate (), and wherein the vane ends () of the vanes () on the carrier plate () and a peripheral face () of the cover plate (), which is allocated to the vane ends (), can be positioned axially relatively to one another for adjusting a gap width S of the gap () with at least one axial adjustment unit () (see FIG. for this). 1. Diagonal fan for gaseous mediahaving a diagonal impeller, which has a carrier plate having several vanes arranged thereon,having a guide device connected downstream to the diagonal impeller for increasing the pressure of the medium andhaving a cover plate, which encloses the carrier plate radially and which extends axially, at least in sections, along the carrier plate,wherein a gap is formed between the vane ends of the vanes on the carrier plate, which extend in the direction of the cover plate, and the cover plate,wherein the vane ends of the vanes on the carrier plate and a peripheral face of the cover plate, which is allocated to the vane ends, is positioned relative to one another for adjusting a gap width S of the gap axially with at least one axial adjustment unit.2. Diagonal fan according to claim 1 , wherein the at least one axial adjustment unit is provided between the carrier plate and a motor that drives the carrier plate claim 1 , and in that the cover plate is provided statically on a housing portion of an intake unit.3. Diagonal fan according to claim 1 , wherein the at least one axial ...

Fan and fan frame thereof

A fan includes a fan frame and a fan wheel. The fan frame includes a frame body and a first waved structure. The frame body has a wind enter side and a wind exhaust side, wherein the wind enter side is opposite to the wind exhaust side. The first waved structure is formed on the wind enter side of the frame body. The first waved structure has a plurality of first peaks and a plurality of first valleys, wherein the first peaks and the first valleys are arranged separately. The fan wheel is rotatably disposed in the fan frame.

AXIAL FLOW FAN

A leading edge of a rotating blade of an impeller is formed in an arc recessed in a direction opposite to a rotating direction of the impeller. An angle where an extended line of the recessed arc of the leading edge meets another extended line of a curve of a side edge is set in an acute angle of 30 to 37 degrees in a front view so that a leading tip of the rotating blade may be projected in the rotating direction. An opening angle of a suction-side slant portion of a venturi casing is set in the range of 12 to 17 degrees and an opening angle of a discharge-side slant portion is set in the range of 30 to 35 degrees. 1. An axial flow fan , comprising:an impeller mounted on a rotating shaft of a rotary drive device; anda venturi casing surrounding an outer periphery of the impeller in a radial direction and including a suction port and a discharge port which face each other in an axial direction of the rotating shaft,wherein a leading edge of a rotating blade of the impeller is formed in an arc recessed in a direction opposite to a rotating direction of the impeller, and an angle where an extended line of the recessed arc of the leading edge meets another extended line of a curve of a side edge is set in an acute angle of 30 to 37 degrees in a front view such that a leading tip of the rotating blade is projected in the rotating direction, andan opening angle of a suction-side slant portion of the venturi casing is set in a range of 12 to 17 degrees and an opening angle of a discharge-side slant portion of the venturi casing is set in a range of 30 to 35 degrees.2. The axial flow fan according to claim 1 , wherein a distance from a boundary between a linear portion and the discharge-side slant portion of the venturi casing to an intersection of a trailing edge and the side edge of the rotating blade is set to approximately 0.1 to 0.5 mm such that the boundary and the intersection are located in nearly the same position.3. The axial flow fan according to claim 1 , ...

Fan

Provided is a fan. The fan includes a hub and a blade extending from the hub. The blade includes a blade rear end having a predetermined curvature and a blade side end connected to the blade rear end. The blade rear end includes ridge parts protruding in a predetermined direction from an extension and furrow parts protruding in a direction opposite to the predetermined direction.

FAN MODULE

A fan module includes a module housing, a first set of stationary blades, a second set of stationary blades, a motor, and a dynamic blade combination. The module housing has a channel having an inlet. The first and second sets of stationary blades are disposed at the inner wall of the module housing. The motor is disposed in the channel and includes a rotor. The dynamic blade combination includes a hub fixed to a periphery of the rotor, and a first set of dynamic blades and a second set of dynamic blades that surround and are disposed to a periphery of the hub. The first set of dynamic blades is located between the inlet and the first set of stationary blades. The second set of dynamic blades is located between the first and second set of stationary blades. 1. A fan module , comprising:a module housing having a channel, wherein two ends of the channel are respectively an inlet and an outlet;a first and second set of stationary blades disposed at the inner wall of the module housing and located in the channel;a motor disposed in the channel and comprising a rotor; and a hub fixed to a periphery of the rotor and driven by the motor to rotate;', 'a first set of dynamic blades; and', 'a second set of dynamic blades;', 'wherein, the first and second set of dynamic blades surround and are disposed at a periphery of the hub, the first set of dynamic blades are located between the inlet and the first set of stationary blades, and the second set of dynamic blades are located between the first set of stationary blades and the second set of stationary blades., 'a dynamic blade combination, comprising2. The fan module of claim 1 , wherein the channel comprises:a converging section connected to the inlet and tapered off from the inlet toward the outlet, wherein the first set of dynamic blades are located at the converging section;a diverging section connected to the outlet and tapered off from the outlet toward the inlet; anda supercharged section connected between the ...

Method and apparatus for independently varying airflow and noise generation of a fan

A fan design method and fan structure is described, enabling independent control of the volume of airflow and the amount of noise produced. The noise produced is a close approximation to a pleasing red noise spectrum, and is generated solely by the interaction of the rotating fan blades with a petal assembly or a fan enclosure in several embodiments. A petal assembly may be positioned at varying spacings behind the rotating fan blades to control the level of noise production with minimal effect on the volume of airflow. Various aspects of the fan blade configuration, such as the blade pitch, camber, span, chord, etc., may be manipulated to control the ratio of airflow volume to the amount of noise produced.

FAN AND PRESSURE-INCREASING BLADE ASSEMBLY THEREOF

A fan includes a frame and an impeller including a hub, a plurality of first blades, a first ring-shaped structure, and a plurality of second blades. The first blades are disposed around the hub. The hub and the first blades are surrounded by the first ring-shaped structure connected with the ends of the first blades, and a central area is structured therebetween. The second blades are connected with an outer rim of the first ring-shaped structure. The frame includes a base, an axle tube portion disposed on the base, and a receiving portion. The impeller is disposed on the axle tube portion. The receiving portion includes plural third blades disposed around the base corresponding to the central area. The first and third blades are matched to each other to be assembled for transforming a tangent velocity into a static pressure to increase the pressure generated by the central area. 1. A fan , comprising: a hub;', 'a plurality of first blades disposed around the hub;', 'a first ring-shaped structure connected with ends of the first blades, wherein the hub and the first blades are surrounded by the first ring-shaped structure, and the central area is structured between the first ring-shaped structure and the hub; and', 'a plurality of second blades connected with an outer rim of the first ring-shaped structure; and, 'an impeller forming a central area in a specific radius and the impeller comprising a base;', 'an axle tube portion disposed on the base, wherein the impeller is disposed on the axle tube portion; and', 'a receiving portion including a plurality of third blades, wherein the third blades are disposed around the base and corresponding to the central area of the impeller,, 'a frame comprisingwherein the first blades and the third blades are matched to each other to be assembled as a pressure-increasing blade assembly, and a tangent velocity of an airflow generated by rotation of the central area is transformed into a static pressure by the pressure-increasing ...

WEARABLE BLOWER AND ASSEMBLY

An assembly including a wearable blower having a fan, a motor, an air duct having a duct housing thereof, a handle attached to the duct housing, and a hanger disposed on the duct housing. The hanger has an attachment part attached to the duct housing and adjacent to the handle and a hanger part connected to the attachment part for holding an accessory attached to the blower. The hanger part rotates with respect to the duct housing at a first hanging position whereat the hanger part is unfolded with an opening mouth for holding the accessory of the blower and the hanger part rotates with respect to the duct housing at a second folded position. Thus, the arrangement of the hanger can help the user to hold the accessory of the blower at the work states. 1. A wearable blower , comprising:a fan;a drive unit configured to drive the fan;an air duct having a duct housing for accommodating at least one of the fan and the drive unit therein;a handle attached to the duct housing; anda hanger disposed on the duct housing, the hanger having an attachment part rotatably attached to the duct housing and adjacent to the handle, and a hanger part connected to the attachment part for holding an accessory attached to the blower;wherein the hanger part rotates with respect to the duct housing at a first hanging position whereat the hanger part is unfolded with an opening mouth configured for holding the accessory attached to the blower, and the hanger part rotates with respect to the duct housing at a second folded position whereat the hanger part is folded.212. The blower of claim 1 , wherein a distance L of an end of the hanger part to a central line of the blower at the second folded position along a direction perpendicular to a the central line is less than a distance L of the end of the hanger part to the central line of the blower at the first hanging position.334. The blower of claim 1 , wherein the hanger part includes an opened hook claim 1 , the opened hook of the hanger has ...

AIR COMPRESSION DEVICE

The present application discloses an air compression device, including a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; and a filter through which air passes, the air being sucked into the housing. The filter may include a plate member having a first main plate portion provided with air holes through which the air passes. A surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air. 1. An air compression device , comprising:a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; anda filter through which air passes, the air being sucked into the housing,wherein the filter includes a plate member having a first main plate portion provided with air holes through which the air passes, andwherein a surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air.2. The air compression device according to claim 1 ,wherein the filter includes a second main plate portion aligned with the plate member in a third direction different from the first and second directions, andwherein the second direction has a first intersection angle with an imaginary plane which perpendicularly intersects with the first direction.3. The air compression device according to claim 2 ,wherein the air holes in the first main plate portion include a first air hole, and a second air hole aligned with the first air hole in a fourth direction along the surface of the plate member,wherein the second main plate portion includes a third air hole extending in a fifth direction having a second intersection angle with the fourth direction, and a fourth air hole ...

FLUID STRAIGHTENING CONNECTION UNIT

Various connection units are disclosed. The connection unit can be configured to straighten a flow of air, such as to reduce the distance before the flow of air becomes substantially laminar. The connection unit can include a drag reduction unit. The drag reduction unit can be configured to redirect airflow to the center of the connection unit. The connection unit can include a wake diverting component configured to lift air away from the periphery of the connection unit and/or redirect the airflow towards a radial center connection unit. 1. A system for redirecting airflow , the system comprising:an upstream component comprising an engagement portion on a downstream end of the upstream component; an upstream engagement portion;', 'a drag reduction unit positioned at or near an upstream end of the connection unit;', 'a wake diverting component protruding from an internal surface of the connection unit, the wake diverting component located downstream of the drag reduction unit; and', 'a downstream engagement portion;, 'a connection unit comprisinga downstream component comprising an engagement portion on an upstream end of the downstream component;wherein the upstream engagement portion of the connection unit is configured to engage with the engagement portion of the upstream component, and wherein the downstream engagement portion of the connection unit is configured to engage with the engagement portion of the downstream component; andwherein the connection unit is configured to receive a flow of non-laminar air from the upstream component and to provide, within a distance of less than or equal to 12 inches downstream of the connection unit, a flow of substantially laminar air to the downstream component.2. The system of claim 1 , wherein the drag reduction unit comprises a generally hemispherical shape.3. The system of claim 1 , wherein the drag reduction unit is radially centered within the connection unit.4. The system of claim 1 , wherein the wake diverting ...

Turbocharger Having Improved Rupture Containment

A turbocharger for a powered machine including a turbine is disclosed. The turbocharger may include a turbine wheel including a disk section, the disk section including a disk body, the disk body including a length extending between a longitudinal axis and a blade platform. The disk section may further include a shoulder section positioned radially outward the longitudinal axis, a neck section positioned radially outward the shoulder section and a throat section positioned radially outward the neck section, an upstream axial plane coextensive with an upstream side of the blade platform, a downstream axial plane coextensive with a downstream side of the blade platform. Further, the turbine burst shield section may have a geometry that peaks in depth in the burst plane which prevents ejection of secondary mass in the event of a turbine burst.

FAN VIBRATION DAMPING STRUCTURE AND FAN WITH THE VIBRATION DAMPING STRUCTURE

A fan vibration damping structure and a fan with the vibration damping structure. The fan vibration damping structure includes a bearing cup, a first bearing, a second bearing, a third bearing, an elastic member and at least one oil seal. The bearing cup has an internal receiving space and a bearing hole in communication with each other. The first, second and third bearings and the elastic member are disposed in the receiving space. A high-viscosity-coefficient oil is filled in the receiving space. The fan vibration damping structure is applied to the fan to greatly reduce vibration of the fan in operation. 1. A fan vibration damping structure comprising a bearing cup , the bearing cup having a bearing hole and a receiving space in communication with each other , a first bearing and a second bearing being disposed in the receiving space , a third bearing , an elastic member , at least one oil seal being disposed between the first and second bearings , a high-viscosity-coefficient oil being filled between the first and second bearings.2. The fan vibration damping structure as claimed in claim 1 , wherein the first and second bearings are ball bearings claim 1 , while the third bearing is an oil-retaining bearing.3. The fan vibration damping structure as claimed in claim 1 , wherein a locating member is further disposed between the third bearing and the elastic member claim 1 , the first and second bearings being disposed at two ends of the receiving space claim 1 , the oil seal being disposed between the first and third bearings claim 1 , the locating member being disposed between the third bearing and the elastic member.4. The fan vibration damping structure as claimed in claim 3 , wherein the locating member is a retainer ring.5. The fan vibration damping structure as claimed in claim 1 , wherein a stop section radially protrudes from the bearing cup into the receiving space and one side of the first bearing abuts against the stop section.6. A fan with a fan ...

DRIVE ASSEMBLY PROVIDED WITH A CONTINUOUSLY VARIABLE TRANSMISSION AND A DIRECTION REVERSING MECHANISM

A drive assembly including a CVT and a direction reversing mechanism is described herein. The direction reversing mechanism is such that the output of the drive assembly may rotate at variable speed in a first direction and at a fixed speed in a second direction. 1. A drive assembly comprising:an input shaft;a CVT provided with an input associated with the input shaft and with an output;an output shaft;a direction reversing mechanism having a forward input associated with the input shaft, a reverse input associated with the output of the CVT and an output associated with the output shaft; the direction reversing mechanism being movable between a forward position where the output of the direction reversing mechanism is interconnected with the forward input and a reverse position where the output of the direction reversing mechanism is interconnected with the reverse input.2. A drive assembly as recited in claim 1 , wherein the direction reversing mechanism includes a third position where the output of the direction reversing mechanism is freewheeling.3. A drive assembly as recited in claim 2 , wherein the direction reversing mechanism includes a three-position clutch.4. A drive assembly as recited in claim 3 , wherein the three-position clutch includes a first fixed disk connected to output of the CVT claim 3 , a second fixed disk connected to the input shaft and a movable disk connected to the output shaft.4. A drive assembly as recited in claim 3 , wherein the three-position clutch includes a first fixed disk connected to output of the CVT claim 3 , a second fixed disk connected to the input shaft and a movable disk connected to the output shaft5. A drive assembly as recited in claim 4 , wherein the first fixed disk is connected to the output of the CVT via a pair of meshed gears.6. A drive assembly as recited in claim 4 , wherein the second fixed disk is connected to the input shaft via a pair of meshed gears.7. A drive assembly as recited in claim 4 , wherein the ...

OUTDOOR FAN MOTOR AND AIR-CONDITIONING APPARATUS

In a motor, a connection portion between a lead wire and an aluminum wire is provided distant from a terminal block, with a leading end of a winding residing on one of cores that is not adjacent to a core that is at a position where the terminal block is provided. 1. An outdoor fan motor comprising: a stator including a plurality of cores and in which aluminum wires are used as windings;a rotor rotatably provided on an inner circumferential side of the stator;a body outer shell provided as a resin mold that secures the stator;a terminal block provided to a bottom portion of the body outer shell and including terminals with which the stator and an external power source are connected to each other; andlead wires made of copper wires and connecting the terminals of the terminal block to the aluminum wires forming the windings,wherein a connection portion between each of the lead wires and a corresponding one of the aluminum wires is provided distant from the terminal block, with a leading end of each of the windings residing on one of the cores that is not adjacent to a core of the cores that is at a position where the terminal block is provided.2. The outdoor fan motor of claim 1 ,wherein a position of the leading end of each of the windings is offset by 180 degrees or more about a center of rotation with respect to the core of the cores that is at the position where the terminal block is provided.3. The outdoor fan motor of claim 1 ,wherein a portion of the terminal block is embedded in the bottom portion, and the embedded portion is on any of the cores.4. The outdoor fan motor of any one of claim 1 , wherein at least either of a dehumidifying agent and varnish is applied to the connection portion and a joining portion between the aluminum wires.5. An air-conditioning apparatus comprising:a fan provided in a casing and configured to take in air from an air inlet and to blow the air that has passed through a heat exchanger from an air outlet;{'claim-ref': {'@idref': ' ...

CEILING FAN

A ceiling fan comprising: a fan motor and blade assembly, a mounting tube for suspending the fan motor and blade assembly from a ceiling, and a power supply mounted within the mounting tube configured to power the fan motor. Also a ceiling fan comprising a moulded stator frame, a raised turret integrally moulded within the frame configured to enclose and mount a motor controller, and an external user changeable auxiliary module. Also ceiling fan comprising: a totally enclosed safety extra low voltage fan motor assembly configured to be suspended from an upper side, and a scaling arrangement within the assembly providing a substantial degree of ingress protection against dust and water incident from at least an under side. Also a method comprising providing a ceiling fan comprising moulded stator frame, and mounting an external user changeable auxiliary module to a raised turret integrally moulded within the frame. 1. A ceiling fan comprisinga fan motor and blade assembly,a mounting tube for suspending the fan motor and blade assembly from a ceiling, anda power supply mounted within the mounting tube configured to power the fan motor,2. The ceiling fan in wherein the power supply is a switched mode power supply (SMPS).3. The ceiling fan in wherein the SMPS is configured to output a safety extra low voltage to power the fan motor.4. The ceiling fan in wherein the SMPS is configured to output a voltage less than or equal to 60V to power the fan motor.5. The ceiling fan in wherein the SMPS has 2 levels of output isolation.6. The ceiling fan in wherein the fan motor is an electrically commutated (EC) motor7. The ceiling fan in wherein the motor is a double rotor claim 6 , axial flux toroidally wound (TORUS) motor8. The ceiling fan in further comprising a motor controller configured to control the fan motor using back eta sensing claim 6 ,9. The ceiling fan in any of further comprising a sealing arrangement within the fan motor and blade assembly providing a substantial ...

HEAT MODULE

The fan includes an impeller, a motor, and a housing. The housing includes a side wall portion and a lower plate portion. at least one of the lower plate portion and 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 a lateral side of the impeller. At or near an opposite end of the heat pipe, the heat pipe includes a contact portion arranged to be in contact with one of an upper surface of the lower plate portion and a lower surface of the upper plate portion. A longitudinal direction of at least a portion of the heat pipe extends at an angle with respect to the air outlet. 1. A heat module comprising:a fan; anda heat pipe arranged to be in thermal contact with a heat source at or near one end thereof, and arranged to be in thermal contact with the fan at or near an opposite end thereof; wherein an impeller including a plurality of blades arranged in a circumferential direction about a central axis extending in a vertical direction;', 'a motor arranged to rotate the impeller; and', 'a housing arranged to accommodate the impeller and the motor;, 'the fan includes a side wall portion arranged to cover a lateral side of the impeller, and including at least one opening each of which opens into an exterior space outside of the fan, each of the at least one opening extending over a circumferential extent; and', 'a lower plate portion arranged to be in contact with the side wall portion, and arranged to support the impeller through the motor such that the impeller is rotatable;, 'the housing includesat least one of the lower plate portion and 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 air outlet is a ...

METHOD FOR ASSEMBLING COMPRESSOR, AND BUNDLE GUIDE DEVICE

A method for assembling a compressor comprises: a bundle arrangement step in which a bundle is arranged behind the opening of a casing in the insertion direction; a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both an outside traveling device and an intermediate traveling device; and a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both an inside traveling device and the outside traveling device. 1. A method for assembling a compressor including a bundle having a rotor therein , a casing into which the bundle is inserted , and an inside traveling device supporting the front end of the bundle in the direction of the insertion into the casing and capable of traveling in the insertion direction on the inner peripheral surface of the casing , and an outside traveling device supporting the rear end of the bundle in the insertion direction and capable of traveling in the insertion direction on a base surface disposed outside the casing and an intermediate traveling device supporting the intermediate portion of the bundle between the inside traveling device and the outside traveling device in the insertion direction and capable of traveling on the base surface being removable from the compressor , comprising:a bundle arrangement step in which the bundle is arranged behind an opening of the casing in the insertion direction;a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both the outside traveling device and the intermediate traveling device; anda second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both the inside traveling device and the outside traveling device.2. ...

Propeller Fan and Air Conditioner Equipped with the Same

In order to suppress that a velocity in the vicinity of a bell mouth is lowered to induce non-uniformity in velocity at an outlet of a blade and an outlet of the bell mouth caused by adoption of a forward-swept blade which makes a tip vortex small as means for noise reduction, in a blade of a propeller fan, a trailing edge portion which has been rotationally projected on a plane passing through a rotational axis is formed from the rotational axis toward a blade tip portion so as to bend from the suction side to the discharge side with a first curvature, and is further formed so as to bend with a second curvature which is smaller than the aforementioned first curvature with an inflection point interposed. 1. A propeller fan , comprising:a rotational axis serving as a center of rotation; anda plurality of blades provided around the rotational axis,a bell mouth being arranged outside in an outer radial direction of the plurality of blades, whereineach of the plurality of blades is formed bya trailing edge portion formed on the rear relative to a rotation direction, a leading edge portion formed on the front relative to the rotation direction, a blade tip portion formed from a tip portion in an outer radial direction of the trailing edge portion toward a tip portion in an outer radial direction of the leading edge portion,the trailing edge portion which has been rotationally projected on a plane passing through the rotational axis is formed from the rotational axis toward the blade tip portion so as to bend from the suction side to the discharge side with a first curvature, and further is formed so as to bend with a second curvature which is smaller than the first curvature with an inflection point interposed.2. The propeller fan according to claim 1 , whereinon an end face of the bell mouth which is closest to the blade, a position which is an end portion in a discharge direction and where an angle is changed in an outer radial direction almost matches a position of ...

COOLING SYSTEM FOR STREAMLINED AIRFLOW

A cooling system includes a fan and a system component. The fan includes a plurality of fan blades and configured to rotate in a fan direction. The system component is located downstream of the fan, and includes a cutout for passing of airflow from the fan, and a bridge spanning the cutout. The bridge includes a center section and at least one arm section extending from the center section to an edge of the cutout along a curved path offset towards the fan direction. 1. A system for providing streamlined airflow , comprising:a fan comprising a plurality of fan blades and configured to rotate in a fan direction; and a center section; and', 'at least one arm section extending from the center section to an edge of the cutout along a curved path offset towards the fan direction;, 'a system component located downstream of the fan, comprising a cutout for passing of airflow from the fan, and a bridge spanning the cutout, wherein the bridge comprises2. The system of claim 1 , further comprising a spinner faring that extends from the center section of the system component.3. The system of claim 1 , further comprising a reverse blade faring extends from each of the at least one arm section.4. The system of claim 1 , wherein each of the plurality of fan blades comprises a leading fan edge facing towards the fan direction and a trailing fan edge facing against the fan direction claim 1 , wherein each of the at least one arm section comprises a leading arm edge facing the fan direction and a trailing arm edge facing against the fan direction.5. The system of claim 4 , wherein the leading arm edge follows a convex path from the center section to the edge of the cutout.6. The system of claim 4 , wherein the trailing arm edge follows a concave path from the center section to the edge of the cutout.7. The system of claim 4 , wherein the leading arm edge and trailing arm edge have an approximately equivalent shape.8. The system of claim 4 , wherein the leading arm edge of each of the ...

Stepped leading edge fan blade

A fan blade apparatus for use in a high-volume, low-speed fan wherein the fan blade includes a body portion, a leading edge portion and a trailing portion. The fan blade coupled to an electric motor configured to rotate in an intended direction wherein the leading portion of the fan blade is at the forefront of the rotation of the blade. The leading edge portion of the fan blade includes a series of steps extending along the length of the leading edge. The stepped configuration creates turbulent air flow when the electric motor rotates in the intended direction.

Fan blades with abrasive tips

A fan blade for a gas turbine engine is disclosed. The disclosed fan blade includes an airfoil having a leading edge, a trailing ling edge, a convex side, a concave side and a distal tip. The leading edge, trailing edge, convex side and concave side of the airfoil is at least partially coated with an erosion resistant coating. The distal tip of the airfoil is coated with a bonded abrasive coating. The bonded abrasive coating engages the abradable coating disposed on the fan liner and, because of its low thermal conductivity, reduces heat transfer to the distal tip of the fan blade. The reduction in heat transfer to the distal tip of the fan blade preserves the integrity of erosion resistant coatings that may be applied to the body or the airfoil of the fan blade.

FAN BACKFLOW PREVENTION STRUCTURE

A fan backflow prevention structure includes a frame body, a first static blade and a second static blade. The frame body has a peripheral wall. Two ends of the peripheral wall are respectively formed with an air inlet and an air outlet. A base seat is correspondingly disposed at the air outlet. The first static blade outward extends from the base seat and includes multiple static blade sections. Two ends of each static blade section are respectively connected with the base seat and the peripheral wall. The second static blade is disposed at the air outlet and rotatably assembled with the base seat. The second static blade has an assembling section and multiple stop sections outward extending from the assembling section. 1. A fan backflow prevention structure comprising:a frame body having a peripheral wall, two ends of the peripheral wall being respectively formed with an air inlet and an air outlet, a base seat being correspondingly disposed at the air outlet;a first static blade outward extending from the base seat, the first static blade including multiple static blade sections, two ends of each static blade section being respectively connected with the base seat and the peripheral wall; anda second static blade disposed at the air outlet and rotatably assembled with the base seat, the second static blade having an assembling section, multiple stop sections outward extending from the assembling section.2. The fan backflow prevention structure as claimed in claim 1 , wherein the first static blade and the frame body are integrally formed.3. The fan backflow prevention structure as claimed in claim 1 , wherein the assembling section and the stop sections integrally formed claim 1 , the stop sections outward radially extending from the assembling section and being arranged at intervals.4. The fan backflow prevention structure as claimed in claim 1 , wherein the base seat is further formed with a hub section protruding from an outer circumference of a bottom section ...

MICRO FAN

A micro fan is provided. The micro fan includes a rotor and a stator. The stator includes an axial induced coil unit and a circuit board. The axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers. 1. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers,wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,wherein the axial induced coil unit generate an magnetic force to rotate the rotor,wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.2. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil into a flat-shaped bundle,wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,wherein the axial induced coil unit generate an magnetic force to rotate the rotor,wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.3. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the stator is produced by the following steps:providing the axial induced coil unit;directly mounting the axial induced coil unit on the circuit board by surface mount technology, and the axial induced coil unit is a magnetic pole unit of the stator,wherein an end contact of ...

Propeller fan, air-sending device, and refrigeration cycle apparatus

A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.

REAR GRILL ASSEMBLY FOR BOX FAN

Disclosed is a rear grill assembly for a box fan including a rear grill, an electric motor support positioned on the rear grill by a positioning structure, and a frame arranged on the periphery of the rear grill by a snap structure. The frame includes a bottom cover, a top cover, and two side boards connected between the bottom cover and the top cover. The electric motor support is positioned on the rear grill by the positioning structure so that the electric motor support can be mounted easily and firmly. Thus, shortening the time for mounting the motor support, and improving the efficiency for mounting the rear grill assembly. Moreover, since the bottom cover, the top cover and the two side boards are assembled to form a frame, each part can be produced separately, whereby the difficulty in producing the frame is decreased to a certain extent. 1. A rear grill assembly for a box fan comprising:a rear grill;a positioning structure;a snap structure;an electric motor support located on the rear grill through the positioning structure; anda frame arranged at a peripheral edge of the rear grill through the snap structure, and comprising a bottom cover, a top cover and two lateral plates connected between the bottom cover and the top cover.2. The rear grill assembly for the box fan according to claim 1 , wherein the electric motor support comprises: a plurality of support bodies in a strip shape claim 1 , each support body is located with respect to the rear grill through the positioning structure.3. The rear grill assembly for the box fan according to claim 2 , wherein two support bodies are provided and arranged in parallel to each other claim 2 , each support body extends upwards to an upper edge of the rear grill and downwards to a lower edge of the rear grill claim 2 , an electric motor of the box fan is configured to be fixed between the two support bodies.4. The rear grill assembly for the box fan according to claim 2 , further comprising an electric motor ...

PACKAGED COMPRESSOR

The packaged compressor includes inside a package: a compressor main body compressing air; a cooling fan; a fan cover attached to the cooling fan and opened to a suction side and to an upward direction being a delivery side of the cooling fan; an exhaust duct provided above a delivery side opening of the fan cover and extending in a vertical direction; and an air-cooled heat exchanger arranged to be inclined with respect to a vertical direction inside the exhaust duct and configured to exchange heat between air compressed by the compressor main body and air delivered by the cooling fan. 1. A packaged compressor comprising inside a package:a compressor main body compressing air;a cooling fan;a fan cover attached to the cooling fan and opened to a suction side and to an upward direction being a delivery side of the cooling fan;an exhaust duct provided above a delivery side opening of the fan cover and extending in a vertical direction; andan air-cooled heat exchanger arranged to be inclined with respect to a vertical direction inside the exhaust duct and configured to exchange heat between air compressed by the compressor main body and air delivered by the cooling fan.2. The packaged compressor according to claim 1 , whereina suction side opening of the fan cover opens to a horizontal direction, andthe package includes an intake port for introducing cooling air in a height position where the cooling fan cannot be directly viewed through the suction side opening.3. The packaged compressor according to claim 1 , further comprising a sound insulating plate installed in a vertical direction on an upper side of the air-cooled heat exchanger inside the exhaust duct.4. The packaged compressor according to claim 3 , wherein the sound insulating plate is installed so as to cross a ventilation direction of the air-cooled heat exchanger.5. The packaged compressor according to claim 4 , wherein a sound absorbing material is stuck to the sound insulating plate.6. The packaged ...

ELECTRIC AIRCRAFT PROPULSION SYSTEM

An electric propulsion system for an aircraft includes a nacelle and an electric machine. The electric machine includes a stator positioned in the nacelle, and a rotor and fan assembly positioned in a primary flow path through the nacelle. The rotor and fan assembly includes a cylindrical fan shroud, a plurality of rotor magnets positioned on an outer surface of the fan shroud, and a fan hub mounted on a central support shaft via one or more bearings. A plurality of fan blades extend between an inner surface of the fan shroud and an outer surface of the fan hub. The rotor magnets may be loaded in compression in a radial direction when the rotor and fan assembly is at rest. The fan blades may be pre-stressed in a radial direction when the rotor and fan assembly is at rest. 1. A propulsion system for an aircraft , the system comprising:a nacelle defining a primary air flow path from an inlet end of the nacelle to an outlet end of the nacelle; a first stator positioned in the nacelle and comprising a first one or more stator windings; and', a first fan shroud having a first outer surface;', 'a first plurality of rotor magnets positioned directly on the first outer surface of the first fan shroud and concentric with the first one or more stator windings;', 'a first fan hub positioned concentrically interior of the first fan shroud, the first fan hub being coupled to a central support shaft; and', 'a first plurality of fan blades extending between the first fan shroud and the first fan hub., 'a first rotor and fan assembly positioned in the primary flow path, the first rotor and fan assembly comprising], 'a first electric machine comprising2. The system of claim 1 , comprising: a second stator positioned in the nacelle and comprising a second one or more stator windings; and', a second fan shroud having a second outer surface;', 'a second plurality of rotor magnets positioned directly on the second outer surface of the second fan shroud and concentric with the second one ...

BLOWER WITH SILENCER

A blower with a silencer has the blower including an axial fan including a casing, a motor attached to the casing, and a rotor having a shaft portion attached to the motor and rotated and a blade formed to protrude to an outer side of the shaft portion in a radial direction, and a silencer attached to the casing, in which the silencer includes a resonator that selectively silences a dominant sound generated by the axial fan, the silencer is disposed at a position in which at least a part of the silencer overlaps with the shaft portion, as viewed from a rotation axis direction of the rotor, and in a case in which, in a cross section perpendicular to a rotation axis of the rotor, a circle around the rotation axis, which has a radius of a line connecting the rotation axis and a point of a most distal end of the blade, is defined as a rotation region, an area of the silencer in the cross section perpendicular to the rotation axis is smaller than an area of the rotation region. 1. A blower with a silencer , the blower comprising:an axial fan including a casing, a motor attached to the casing, and a rotor having a shaft portion attached to the motor and rotated and a blade formed to protrude to an outer side of the shaft portion in a radial direction; anda silencer attached to the casing,wherein the silencer includes a resonator,the silencer is disposed at a position in which at least a part of the silencer overlaps with the shaft portion, as viewed from a rotation axis direction of the rotor, andin a case in which, in a cross section perpendicular to a rotation axis of the rotor, a circle around the rotation axis, which has a radius of a line connecting the rotation axis and a point of a most distal end of the blade, is defined as a rotation region, an area of the silencer in the cross section perpendicular to the rotation axis is smaller than an area of the rotation region.2. The blower with a silencer according to claim 1 ,wherein the silencer is disposed to overlap ...

SUPPLEMENTAL COOLING OF CABIN AIR COMPRESSOR MOTOR

An assembly includes a first conductor, a tube extending along the first conductor between first and second ends of the first conductor, and an electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor. Another assembly includes a plurality of conductors, a first tube extending along at least one of the conductors, and an electrically-insulating barrier enclosing the conductors and the first tube in which the barrier maintains spacing between the first tube and one or more adjacent conductors. In each assembly, the tube is configured to permit a fluid to flow therethrough. A method of manufacturing a feeder cable includes providing conductors that extend between first and second lugs of each conductor, enclosing the conductors within an electrically-insulating layer, and forming a cooling passage within the electrically-insulating layer that extends along one of the conductors. 1. An assembly comprising:a first conductor extending from a first end to a second end;a tube extending along the first conductor between the first and second ends of the first conductor; andan electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor, wherein the tube is configured to permit a fluid to flow therethrough.2. The assembly of and further comprising:a cabinet in flow communication with a first end of the tube, wherein the cabinet is configured to mount one or more electrical components; anda first duct in flow communication with a second end of the tube, wherein a first pressure within the first duct is less than a second pressure within the cabinet.3. The assembly of claim 2 , wherein the tube has a hydraulic diameter and a length that produce a pressure drop associated with the fluid flowing therethrough claim 2 , and wherein the pressure drop is less than a differential pressure between the first and second pressures.4. The assembly ...

Removable mask airflow device

A removable mask airflow device, comprising a first portion constructed and arranged to be positioned at an exterior surface of a facemask, the first portion comprising an opening and at least one flow processing device disposed at the opening and a second portion constructed and arranged to be positioned at an interior surface of the facemask. The at least one flow processing device is configured to process fluid flow through the opening. The second portion is constructed and arranged to couple with the first portion with a portion of the facemask being between the first portion and the second portion.

PROPELLER FAN

A first opening, which passes through the blade surface part from a negative pressure side toward a positive pressure side, is provided between the first blade element and the second blade element on the blade surface part. A space between an outer edge of the first blade element extended from the side surface toward an outer edge side of the blade, and an outer edge of the second blade element extended from the side surface toward the outer edge side of the blade on the positive pressure surface side, is opened from the side surface in a radial direction of the blade surface part, so that an air current coming from the negative pressure side toward the positive pressure side through the first opening, flows from the first opening toward the outer edge side of the blade along the positive pressure surface. 1. A propeller fan comprising:a hub including a side surface around a center axis; anda plurality of blades disposed on the side surface of the hub, whereinthe blades each include a blade surface part, which is extended from a based end connected to the side surface of the hub to an outer edge, and the blade surface part includes an inner peripheral part, which is positioned on the base end side, and an outer peripheral part, which is positioned on the outer edge side,an inner peripheral blade, which is extending from the side surface of the hub toward the outer edge side, is formed on a positive pressure surface of the blade surface part at the inner peripheral part of each of the blades,the inner peripheral blade projects from the positive pressure surface of the blade surface part toward a positive pressure side, and includes a plurality of blade elements, which are arranged side by side in a rotation direction of the blade,the blade elements include a first blade element, which are arranged on a front edge side in the rotation direction of the blade, and a second blade element, which are arranged to be adjacent to the first blade element on a rear edge side in ...

AIR BLOWING DEVICE AND AIR BLOWING MACHINE FOR GENERATING RISING AIR

An air blowing device includes: an air blower provided in connection with a support stand, the air blower being configured to generate rising air; a support frame attached to the support stand; and a wind-direction changing device configured to change a wind direction to a direction crossing a direction of the rising air upon receipt of the rising air, wherein descending air blown to periphery around the air blower is generated by the wind-direction changing device, and the wind-direction changing device is supported by the support frame. 1. An air blowing device comprising:an air blower provided in connection with a support stand, the air blower being configured to blows air from a discharge opening to generate rising air;a support frame attached to the support stand; anda wind-direction changing device configured to change a wind direction to a direction crossing a direction of the rising air upon receipt of the rising air,whereinthe wind-direction changing device is configured to generate descending air in a direction in which the descending air is blown to an area around the air blower,the wind-direction changing device is supported by the support frame.2. An air blowing device comprising:an air blower configured to blows air from a discharge opening to generate rising air;an air filter provided on an intake opening or the discharge opening of the air blower; anda wind-direction changing device configured to change a wind direction to a direction crossing a direction of the rising air upon receipt of the rising air,whereinthe wind-direction changing device is configured to generate descending air in a direction in which the descending air is blown to an area around the air blower.3. The air blowing device according to claim 2 , wherein the air blower including the air filter is provided in connection with a support stand claim 2 , a support frame is attached to the support stand claim 2 , and the wind-direction changing device is supported by the support frame.4 ...

MIXED FLOW FAN MODULE AND PORTABLE AIR PURIFIER WITH MIXED FLOW FAN MODULE

A mixed flow fan module and a portable air purifier including a mixed flow fan module are provided. The mixed flow fan module may include a fan housing having an outer surface that is curved along a circumferential direction and defining an operation space, a fan rotatably disposed inside of the fan housing, and a fan base coupled to the fan housing and configured to guide air toward the fan. 1. A mixed flow fan module , comprising:a fan housing having an outer surface that is curved along a circumferential direction and defining an operation space;a fan rotatably disposed inside of the fan housing; anda fan base coupled to the fan housing and configured to guide air in a direction toward the fan, wherein the fan housing, the fan, and the fan base are coupled together to form a module.2. The mixed flow fan module of claim 1 , wherein the fan housing comprises:a support plate disposed at a center of the fan housing;a connecting supporter that extends outward from the support plate in a radial direction; anda side supporter that is spaced apart from the support plate, connected to the connecting supporter, and having a circular curved surface along an outer circumference thereof.3. The mixed flow fan module of claim 2 , wherein the fan housing further comprises a protrusion mounting groove defined on a lower surface of the side supporter claim 2 , having a concave shape claim 2 , and to which a coupling protrusion of the fan base is coupled.4. The mixed flow fan module of claim 2 , wherein the fan housing further comprises an inner guide that protrudes inward from the side supporter and having a first inclined surface claim 2 , wherein an inner diameter of the first inclined surface decreases toward the fan base.5. The mixed flow fan module of claim 2 , wherein the fan housing further comprises a wire guide disposed on a side surface of the connecting supporter and configured to support a lower side of a wire to move the wire along the side surface of the connecting ...

FAN FRAME STRUCTURE

A fan frame structure includes a frame having a bottom surface, a top surface and a flow passage. The flow passage is located between the bottom surface and the top surface, and the bottom surface and the top surface are provided with an outlet opening and an inlet opening, respectively, which are communicable with the flow passage. The outlet opening has an outlet edge, on and along which a plurality of notches communicable with the flow passage is cut. By providing the notches on the outlet edge, it is able to largely reduce the noise and the vibration produced when a fan operates. 1. A fan frame structure , comprising:a frame having a bottom surface, a top surface and a flow passage; the flow passage being located between the bottom surface and the top surface, and the bottom surface and the top surface being provided with an outlet opening and an inlet opening, respectively, which are communicable with the flow passage; and the outlet opening having an outlet edge, on and along which a plurality of notches communicable with the flow passage is cut.2. The fan frame structure as claimed in claim 1 , wherein the notches are so cut on and along the outlet edge that they are either equally spaced claim 1 , unequally spaced claim 1 , or in a staggered arrangement.3. The fan frame structure as claimed in claim 1 , wherein the outlet edge is selected from the group consisting of a surface bent at an angle and a slant surface.4. The fan frame structure as claimed in claim 1 , wherein the notches have a shape selected from the group consisting of a groove claim 1 , a triangle claim 1 , a polygon claim 1 , and an isosceles trapezoid.5. The fan frame structure as claimed in claim 1 , wherein the notches can be cut on the outlet edge in a direction perpendicular to or not perpendicular to the outlet edge.6. The fan frame structure as claimed in claim 1 , further comprising a base located in the flow passage; and the base being supported at the outlet opening and connected to ...

SUSPENDED FAN GENERATING RANDOM MOVEMENT OF A MAIN BODY

An assembly has a base, a support, a cord, a main body, and a random movement article. The support has a first end and a second end, and the first end is attached to the base. The cord is attached to the second end of the support, and the main body is suspended from the support by the cord. The main body includes a fan configured to produce airflow in an airflow direction. The random movement article is secured to the main body and, when the fan is producing airflow, creates random movement of the main body. 1. An assembly comprising:a base;a support having a first end and a second end, the first end of the support attached to the base;a cord attached to the second end of the support;a main body, the main body being suspended from the support by the cord, with the main body including a fan configured to produce airflow in an airflow direction; anda random movement article secured to the main body and creating random movement of the main body when the fan is producing the airflow.2. The assembly of claim 1 , wherein the support has an elliptical arch shape.3. The assembly of claim 1 , wherein the support is flexible claim 1 , the second end of the support being configured to deflect when the fan is producing the airflow.4. The assembly of claim 1 , wherein the base is configured to sit on a generally horizontal surface.5. The assembly of claim 1 , wherein the base is configured to mount to a generally vertical surface.6. The assembly of claim 1 , wherein the main body further includes a top portion claim 1 , with the cord attached to the top portion at an attachment point claim 1 , andthe random movement article is secured to the top portion and is asymmetrical about the attachment point.7. The assembly of claim 1 , wherein the main body further includes a top portion claim 1 , with the cord attached to the top portion at an attachment point claim 1 , andthe random movement article is secured to the top portion and is unbalanced weight about the attachment point.8. ...

Plastic Fan Shroud And Cone Assembly And Method

A manufacturing method and assembly for providing ventilation to a selected structure is disclosed. The assembly may include various features such as flexible portions, rigid portions, and assembly portions. Further, various steps may be used to form the assembly to achieve selected results, such as single piece formation, inclusion of various positioning members, and packaging or shipping considerations. 13.-. (canceled)4. A fan housing assembly for ventilating a structure , the structure being defined in part by an exterior wall , the fan housing comprising:a shroud having a front sidewall to be mounted to the exterior wall of the structure and an orifice wall extending from the front sidewall in a direction away from the exterior wall, the front sidewall defining a passage through the orifice wall; anda conical diffuser extending from the shroud and defined by a plurality of diffuser members configured to be interconnected, wherein each of the plurality of diffuser members includes a plurality of slots on a first side and a plurality of tabs on a second side opposite the first side, wherein the diffuser is coupled to the shroud;at least the diffuser member having a third side extending between the first and second sides, and a fourth side extending between the first and second sides, the third side of the at least the one diffuser member having a first radius and the fourth side of the at least one diffuser member having a second radius, the first radius being different from the second radius;wherein the each of the plurality of diffuser members is substantially flat across a first major surface and a second major surface, where both the first major surface and the second major surface extend between the first side that includes the plurality of slots and the second side that includes the plurality of tabs at least prior to being interconnected with another of the diffuser members.5. The fan housing assembly of further comprising:a grill member having an external ...

APPARATUS FOR PREVENTING AXIAL-FLOW COMPRESSOR FROM STALLING BY EMPLOYING CASING TREATMENT

An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment includes an outer casing having an inner wall with a slot formed to face a rotor blade, an inner casing moveable so as to open the slot in an unstable operating region and close the slot of the outer casing in a stable operating region, and a drive means for moving the inner casing along the axial direction of the outer casing. Thus, the apparatus can be applied not only to a casing treatment structure where the slope of a slot does not vary with the rotational position of the rotor, but also to a casing with a variously shaped slot such as a radial slot or an axial skewed slot. 1. An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment , in which the axial-flow compressor comprises an outer casing having a slot formed in an inner wall faced with a rotor , the apparatus comprising:an inner casing moveable in an axial direction of the outer casing to open or close the slot of the outer casing; anda drive means to move the inner casing in an axial direction of the outer casing.2. The apparatus of claim 1 , wherein the outer casing comprises:a cavity in fluid communication with the slot in the axial direction of the outer casing, and being positioned within the outer casing; anda slot in fluid communication with the cavity in a direction of wall thickness of the outer casing.3. The apparatus of claim 2 , wherein the drive means comprises:a connecting member connected with the inner casing and extended externally through the slot; anda move means to move the connecting member in the axial direction of the outer casing.4. The apparatus of claim 3 , wherein the move means comprises:a cylinder connected with the connecting member, and an interior of which is divided by a partition into a left side and a right side;a first valve and a second valve to control an inflow of a high pressure air at a downstream of the axial-flow compressor ...

VACUUM GENERATOR FLOW DIVERTER

Embodiments provide systems and methods for providing improved air flow for vacuum generator systems. The systems may include a housing with an impeller and a diverter having an airflow flange comprising an arrow-like projection configured to extend into an airflow space of the housing. The diverter may have curved surfaces that help guide airflow movement within the housing. 1. A diverter for being positioned in a housing of a vacuum generator system , comprising:a securement flange;first and second upper walls; andan airflow flange configured to extend into an airflow space of the housing.2. The system of claim 1 , wherein the securement flange comprises one or more openings.3. The system of claim 1 , wherein the housing comprises an inside housing portion and an outside housing portion claim 1 , wherein the securement flange is sandwiched between the inside housing portion and the outside housing portion.4. The system of claim 1 , wherein the airflow flange comprises an arrow-like projection.5. The system of claim 1 , further comprising a first curved wall extending between the first upper wall and the airflow flange and a second curved wall extending between the second upper wall and the airflow flange.6. A vacuum generator system claim 1 , comprising:a housing comprising first and second portions, the first and second portions each comprising inner curved surfaces;an impeller;a diverter comprising a flange configured to be received between the first and second portions, first and second upper walls configured to abut the housing, an airflow flange comprising an arrow-like projection configured to extend into an airflow space of the housing, a first curved surface extending between the first upper wall and the airflow flange, and a second curved surface extending between the second upper wall and the airflow flange, wherein in use, airflow created up by impeller movement is diverted along the first and second curved walls of the diverter and the inner curved ...

Fan device

A fan device 1 includes a second housing 12 and a hub 27. The hub 27 includes a hub body part 272 and a hub outer peripheral wall part 271. The hub body part 272 is a surface extending in the radial direction orthogonal to the direction of the axis x, and the hub body part 272 covers the motor 20 from the upper side “a” in the direction of an axis c. The hub outer peripheral wall part 271 extends from the end portion of the hub body part 272 toward the lower side “b” from the upper side “a” in the direction of the axis x. Assuming that the outer diameter of the outer peripheral surface of the hub outer peripheral wall part 271 is “a1”, and the outer diameter of the outer peripheral surface of the base outer peripheral wall part 124 is “b1”, 1.05<b1/a1<1.13 is established.

Solar Powered Portable Personal Cooling System with Dual Modes of Operation

The present invention provides a device that provides the wearer a personal zone of cooling effect. Specifically, a headwear is provided that incorporates a stabilizing and aerating platform to house and support an array of photo-voltaic cells that in turn power strategically placed and positionable personal variable speed fans. The present invention also anticipates and counters the power decreases typically encountered by photo-voltaic cells when operating in elevated temperatures. The present invention also provides dual modality of use to provide a smaller photo-voltaic cell array in situations where a sacrifice in power is acceptable to limit its' size.

AXIAL FLOW FAN

An axial flow fan is provided. The axial flow fan includes an impeller and a fan frame. The impeller has a maximum outer diameter. The fan frame includes a first body and a second body. The first body includes a plurality of connecting elements and a base. The connecting elements are connected to the base. The second body is a hollow body, and used for disposing around the impeller. The second body includes a flow passage having a minimum inner diameter. The minimum inner diameter of the flow passage is not larger than the maximum outer diameter of the impeller. Therefore, the size of the second body does not restrict the maximum outer diameter of the impeller, and the shape of the impeller and the shape of the fan frame can be designed flexibly according to the practical demand. 1. An axial flow fan , comprising:an impeller having a maximum outer diameter; anda fan frame comprising a first body and a second body, the first body comprising a plurality of connecting elements and a base, the connecting elements connected to the base, the second body being a hollow body for disposing around the impeller, the second body comprising a flow passage having a minimum inner diameter, wherein the minimum inner diameter of the flow passage is not larger than the maximum outer diameter of the impeller.2. The axial flow fan according to claim 1 , wherein the second body comprises a first opening claim 1 , an inner diameter of the first opening is larger than the maximum outer diameter of the impeller; via the first opening claim 1 , the second body is mounted around the impeller.3. The axial flow fan according to claim 2 , wherein the first body comprises a first side wall claim 2 , a first edge and at least one first combining portion claim 2 , the first edge is formed on the first side wall claim 2 , the at least one first combining portion is formed on the first edge claim 2 , and extends along the first side wall and the first edge.4. The axial flow fan according to claim 3 ...

FAN AND ARRANGEMENT HAVING SUCH A FAN

A fan with a nozzle mounted to a base plate, wherein the base plate has on its rear wall a mounting device with an upper and lower holding device for mounting the fan on a top-hat rail. The upper holding device and the lower holding device reach over an upper edge or a lower edge respectively of the top-hat rail in the mounted state and are arranged offset from one another in a direction running parallel to the longitudinal axis of the top-hat rail in the mounted state of the fan. 1. A fan with a nozzle which is fastened on a base plate , wherein the base plate , on its rear wall , has a fastening device with at least one upper retaining device and at least one lower retaining device for fastening the fan on a top-hat rail , wherein the upper retaining device and the lower retaining device , in the fastened state , engage around an upper periphery and a lower periphery , respectively , of the top-hat rail and are offset in relation to one another in a direction which , in the fastened state of the fan , runs parallel to the longitudinal axis of the top-hat rail , wherein those ends of the retaining devices which are directed toward one another in this direction form inner ends , and the inner end of the upper retaining device and the inner end of the lower retaining device are spaced apart by a distance of a width which is greater than the distance between the upper periphery and the lower periphery of the top-hat rail , and therefore the fan can be inserted into the top-hat rail by being tilted in a direction of tilting insertion about a tilting axis perpendicular to a longitudinal direction of the top-hat rail.2. The fan as claimed in claim 1 , wherein the upper and the lower retaining devices have bevels which are directed toward one another and are intended for reducing a tilting angle which is necessary for insertion purposes.3. The fan as claimed in claim 1 , wherein the upper and the lower retaining devices are designed to be essentially rotationally ...

ENHANCED AXIAL AIR MOVER SYSTEM WITH ENCLOSURE PROFILE

Implementations of an enhanced axial air mover system address various issues such as drying performance, transportability, storage, use, and assembly. Some implementations include ergonomic positioning of a carrying handle relative to positioning of a fan-assembly to make the system easier to carry. Enclosures with variable diameter profiles increase air flow performance. A floor edge allows for flush positioning of the air mover's outlet to improve flow of air. Various supports and engagement members allow for horizontal and/or vertical engagement of a plurality of the air movers for storage or increased air moving capacity for a given application. An alignment guide assists with positioning of the air mover with respect to a room wall to enhance air flow within the room. A cord retaining system provides an enhanced approach for securing the air mover's electrical cord. Grill guards have slotted ends to assist with assembly of the air mover. 1. An air mover system comprising:a fan assembly including a propeller and a motor, the propeller coupled to the motor; anda housing assembly including an enclosure, the enclosure having an interior bounded by an inlet and an outlet, the fan assembly positioned within the interior, the enclosure having a variable diameter including a first diameter at the inlet, a second diameter at the outlet and a third diameter at a mid-point on a first dimension extending from the inlet and outlet, the difference between the first diameter and the third diameter is at least five percent of the first diameter.2. The air mover system of wherein the difference between the first diameter and the third diameter is at least ten percent of the first diameter. 1. Field of the InventionThe present invention is related to axial air movers.2. Description of the Related ArtAir movers are used for such applications as to dry buildings and other structures when accidents have occurred causing areas in the buildings and other structures to become wet. ...

ENHANCED AXIAL AIR MOVER SYSTEM WITH MATRIX

Implementations of an enhanced axial air mover system address various issues such as drying performance, transportability, storage, use, and assembly. Some implementations include ergonomic positioning of a carrying handle relative to positioning of a fan-assembly to make the system easier to carry. Enclosures with variable diameter profiles increase air flow performance. A floor edge allows for flush positioning of the air mover's outlet to improve flow of air. Various supports and engagement members allow for horizontal and/or vertical engagement of a plurality of the air movers for storage or increased air moving capacity for a given application. An alignment guide assists with positioning of the air mover with respect to a room wall to enhance air flow within the room. A cord retaining system provides an enhanced approach for securing the air mover's electrical cord. Grill guards have slotted ends to assist with assembly of the air mover. 1. An air mover system comprising:a fan assembly including a propeller and a motor, the propeller coupled to the motor; anda housing assembly including an enclosure, the enclosure having a bottom and a top, the enclosure having an interior bounded by an inlet and an outlet, an inlet portion extending from the inlet and an outlet portion extending from the outlet, the fan assembly positioned within the enclosure, a first portion of the bottom shaped to at least partially support the inlet portion and a second portion of the bottom shaped to at least partially support the outlet portion on a floor, for a second copy of the air mover system, the top having a first portion shaped to support the first portion of the bottom of the copy, the top having a second portion shaped to support the second portion of the bottom of the copy when the copy is positioned on top of the air mover system.2. An air mover system comprising:a fan assembly including a propeller and a motor, the propeller coupled to the motor; anda housing assembly ...

CENTRIFICAL COMPRESSOR ASSEMBLY FOR A GAS TURBINE ENGINE

A compressor adapted for use in a gas turbine engine includes an impeller, a diffuser, and a deswirler. The impeller is arranged circumferentially about an axis and configured to rotate about the axis. The diffuser is arranged circumferentially around the impeller to receive the air from the impeller. The deswirler is configured to receive the air from the diffuser and to conduct the air into a combustion chamber. 1. A compressor adapted for use in for a gas turbine engine , the compressor comprisingan impeller arranged circumferentially about an axis and configured to rotate about the axis to compress air,a diffuser arranged circumferentially around the impeller to receive the compressed air from the impeller, the diffuser aligned axially with an outer tip of the impeller,a deswirler configured to receive the compressed air from the diffuser and to conduct the compressed air into a combustion chamber, the deswirler arranged circumferentially about the diffuser, anda case assembly that includes an outer case arranged circumferentially about the diffuser, an inner combustor case arranged circumferentially around the axis and located radially inward of the outer case to define the combustion chamber radially between the outer case and the inner combustor case, and a plurality of struts that extend radially and axially between and interconnect directly the outer case and the inner combustor case so that force loads applied to the inner combustor case during the use of the compressor are transmitted to the outer case through the plurality of struts to avoid transmitting the force loads through the diffuser.2. The compressor of claim 1 , wherein the diffuser is decoupled from the case assembly and the deswirler such that the diffuser may thermally grow radially and axially relative to the case assembly and the deswirler.3. The compressor of claim 1 , wherein the outer case is integrally formed with the deswirler and defines an outer wall of the deswirler that is exposed ...

AIR CIRCULATOR HAVING DUAL ROTARY VANE

An air circulator having a dual rotary vane according to an exemplary embodiment of the present invention includes: a casing assembly having a suction port through which air is introduced, and a discharge port through which the air is discharged; an intake fan assembly including an intake motor fixedly coupled in the casing assembly, and an intake fan configured to be rotatably driven by the intake motor; and an exhaust fan assembly including an exhaust motor fixedly coupled in the casing assembly, and an exhaust fan configured to be rotatably driven by the exhaust motor, in which a rotational speed of the exhaust fan is higher than a rotational speed of the intake fan. 1. An air circulator having a dual rotary vane , the air circulator comprising:a casing assembly having a suction port through which air is introduced, and a discharge port through which the air is discharged;an intake fan assembly comprising an intake motor fixedly coupled in the casing assembly, and an intake fan configured to be rotatably driven by the intake motor; andan exhaust fan assembly comprising an exhaust motor fixedly coupled in the casing assembly, and an exhaust fan configured to be rotatably driven by the exhaust motor and having a rotation radius smaller than a rotation radius of the intake fan,wherein a rotational speed of the exhaust fan is higher than a rotational speed of the intake fan.2. The air circulator of claim 1 , wherein when the rotational speed of the intake fan is R1 and the rotational speed of the exhaust fan is R2 claim 1 , R1:R2 is 1:1.5 to 1:1.7.3. The air circulator of claim 1 , wherein when the rotational speed of the intake fan is R1 and the rotational speed of the exhaust fan is R2 claim 1 , R1:R2 is 1:1.7 to 1:2.4. The air circulator of claim 1 , wherein when the rotational speed of the intake fan is R1 and the rotational speed of the exhaust fan is R2 claim 1 , R1:R2 is 1:2.5. The air circulator of claim 1 , wherein when the rotational speed of the intake fan ...

Apparatuses, methods and systems for harnessing fluid flow with flexible mechanical transducers

The APPARATUSES, METHODS AND SYSTEMS FOR HARNESSING FLUID FLOW WITH FLEXIBLE MECHANICAL TRANSDUCERS include mechanisms that include flexible elements with strained deformations. In some implementations, oscillations of strained deformations in fins are excited by a moving fluid. By coupling the fin structure to an electrical generator and/or pump, energy from the moving fluid can be converted into electrical energy or used to perform useful mechanical work. In some implementations, the fin may be coupled to a motor or other actuator which causes the strained deformations to move, thereby imparting force onto the fluid to move or mix fluid or perform other useful work.

FAN FRAME AND FAN MODULE

The present invention relates to a fan frame for a plurality of fan modules, particularly for a radiator of a motor vehicle, comprising a first fan holder having a first outflow region, at least one further fan holder having a further outflow region, and an intermediate region that connects adjoining edge regions of the first and the further fan holders to each other. The fan frame is characterised in that a shielding device, which separates the first and a further outflow region from each other, is provided in the intermediate region. The present invention further relates to a fan module, particularly having such a fan frame.

Fan assembly and fan frame

A fan assembly and a fan frame thereof are disclosed. The fan assembly includes a fan frame and an impeller disposed in the fan frame. The fan frame has an air inlet end and an air outlet end, and includes a sidewall, a top portion and a bottom portion. The top portion is disposed close to the air inlet end and connected to one end of the sidewall. The bottom portion is disposed close to the air outlet end and connected to the other end of the sidewall. The bottom portion has at least one silencing structure.

AIRFOIL WITH STRESS-REDUCING FILLET ADAPTED FOR USE IN A GAS TURBINE ENGINE

The present disclosure is directed toward airfoils used in gas turbine engines. More specifically, the present disclosure teaches airfoils with fillets for managing stresses in airfoils during use in gas turbine engines. 1. A gas turbine engine comprisingan engine core including a compressor assembly, a combustor assembly, and a turbine assembly,a fan assembly including a fan rotor coupled to the engine core to be driven by the engine core, an inner guide vane assembly arranged to interact with air discharged by the fan rotor moving into the engine core, and an outer guide vane assembly arranged to interact with air discharged by the fan rotor moving around the engine core,wherein the outer guide vane assembly includes an inner band arranged around at least a portion of a central axis and an airfoil that extends radially outward from the inner band away from the central axis, the airfoil including a sheet of material that is folded to define a leading edge of the airfoil, a pressure side of the airfoil, and a suction side of the airfoil, the sheet of material being welded to define a trailing edge of the airfoil, andwherein at least one of the pressure side and the suction side of the airfoil is shaped to form a fillet at the interface of the airfoil with the inner band, the fillet shaped to taper such that the fillet increases in size as the fillet extends from the trailing edge along a chord length of the airfoil toward the leading edge of the airfoil.2. The engine of claim 1 , wherein both the pressure side and the suction side of the airfoil are shaped to form a fillet at the interface of the airfoil with the inner band claim 1 , the fillet shaped to taper such that the fillet increases in size as the fillet extends from the trailing edge along a chord length of the airfoil toward the leading edge.3. The engine of claim 1 , wherein the fillet has a first radial height at the trailing edge and a second radial height claim 1 , greater than the first radial height ...

INTEGRATED CEILING DEVICE WITH MECHANICAL ARRANGEMENT FOR A LIGHT SOURCE

An integrated ceiling device () includes an electronics assembly () and a mechanical arrangement (). The mechanical arrangement includes a housing (), a heat dissipating structure (), and support arms (). The housing is configured to retain the electronics assembly. The heat dissipating structure includes a lamp seat () for receiving a light source (), and a central opening () surrounded by fins (). The support arms extend between and interconnect the housing with the heat dissipating structure. The housing is positioned within the central opening and is spaced apart from the fins of the heat dissipating structure to enable a free flow of air in an air gap () between the housing () and the structure (). The electronics assembly may include a plurality of elements () retained in the housing which are spaced apart from the heat dissipating structure. 1. An integrated ceiling device comprising: a housing retaining an electrical assembly;', wherein the housing extends partially above the heat sink and is positioned about a vertical axis of the heat sink, and', 'wherein the housing is coupled to the heat sink to form a through air gap extending between the housing and the heat sink; and, 'a heat sink having a plurality of monolithically formed heat dissipating fins,'}], 'a mechanical arrangement comprisingat least one light source thermally coupled to and disposed on the heat sink.2. The device of claim 1 , wherein the heat sink monolithically forming the plurality of heat dissipating fins retains the at least one light source illuminating a surface below the mechanical arrangement.3. The device of claim 1 , wherein the monolithically formed heat dissipating fins are disposed at least on an outer perimeter of the heat sink.4. The device of claim 1 , wherein an outer surface of the housing comprises a plurality of heat dissipating fins.5. The device of claim 1 , further comprising: an optical assembly coupled to the heat sink.6. The device of claim 5 , wherein the optical ...

THERMALLY PROTECTED MOTOR/GENERATOR FOR GAS TURBINE ENGINE

A turbofan engine includes a main engine shaft rotatable about an engine axis. A bearing assembly supports rotation of the main engine shaft. A bearing compartment defines an enclosed space around the bearing assembly. An electric machine is supported within the bearing compartment and coupled to the main engine shaft. A turbofan engine assembly and a method are also disclosed. 1. A turbofan engine comprising:a main engine shaft rotatable about an engine axis;a bearing assembly supporting rotation of the main engine shaft;a bearing compartment defining an enclosed space around the bearing assembly; andan electric machine supported within the bearing compartment and coupled to the main engine shaft.2. The turbofan engine as recited in claim 1 , wherein the bearing compartment is disposed within a turbine exhaust case.3. The turbofan engine as recited in claim 2 , wherein the main engine shaft comprises a shaft coupled to an aft most turbine section.4. The turbofan engine as recited in claim 3 , wherein the bearing assembly comprises a forward bearing spaced axially apart from an aft bearing.5. The turbofan engine as recited in claim 2 , including a supply conduit that extends at least partially through the turbine exhaust case and includes a lubricant passage communicating lubricant to the bearing assembly and electric machine within the bearing compartment.6. The turbofan engine as recited in claim 5 , wherein an electric power cable is routed through the supply conduit and at least partially surrounded by the lubricant passage.7. The turbofan engine as recited in claim 6 , wherein the electric power cable is disposed along a centerline of the supply conduit and the lubricant passage is disposed at least partially around the electric power cable.8. The turbofan engine as recited in claim 7 , wherein the lubricant passage comprises a least lubricant supply passage and a lubricant return passage.9. The turbofan engine as recited in claim 2 , including a transmission ...

FAN MOTOR

A fan motor includes a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction; an impeller including a plurality of blades, and arranged to rotate together with the rotating portion; a housing arranged to house the motor and the impeller therein; and a plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward. The housing includes a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein; a flange portion arranged to project radially outward from at least a portion of the tubular portion; a lead wire outlet defined in at least a portion of the tubular portion, and arranged to pass through the tubular portion in a radial direction; and a vertical groove arranged to be in communication with the lead wire outlet, and arranged to pass through the flange portion in an axial direction. The flange portion includes a first restricting portion arranged to extend toward the tubular portion. At least one of the lead wires is drawn radially outward through the lead wire outlet, and is held in the vertical groove radially inside of the first restricting portion. 1. A fan motor comprising:a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction;an impeller including a plurality of blades, and arranged to rotate together with the rotating portion;a housing arranged to house the motor and the impeller therein; anda plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward; whereinthe housing includes:a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein;a flange portion arranged to project radially ...

AIR SHUTTER AND RADIATING FAN INCLUDING THE SAME

An air shutter comprises a holder, two compressible elastic members, a plurality of blades, and two cover plates. The holder comprises a central hub, an outer frame and a plurality of connecting pieces, and the outer frame has two annular grooves for receiving the two compressible elastic members. Each of the plurality of blades locates between two adjacent connecting pieces and one end is pivotally connected to the central hub and the other end is pivotally connected to the two compressible elastic members. In a windless state, a gap between two adjacent connecting pieces is closed by one of the blades, and when the windless state changes to a windy state, each blade is rotated by a wind force and area of the gap expands with the increase of the wind force. A radiating fan comprising the air shutter is also provided. 1. An air shutter , comprising:a central hub;an outer frame around the central hub and comprising two annular grooves on opposite sides of the outer frame;two compressible elastic members, each movably received in a respective one of the annular grooves; anda plurality of blades, each of the blades comprising a first shaft pivotally connected to the central hub and two second shafts pivotally connected to the compressible elastic members,wherein the compressible elastic members apply a resilient force to the blades to rotate the blades, thereby changing a distance between the compression elastic members;wherein if the blades are rotated by wind forces, the distance between the compressible elastic members is increased; andwherein if the blades are not rotated by wind forces, the distance between the compressible elastic members is decreased to apply the resilient force on the blades.2. The air shutter as claimed in claim 1 , wherein each of the blades comprises a scalloped body claim 1 , the first shaft and the second shafts protrude from the scalloped body claim 1 , the first shaft is at an end of the scalloped body.3. The air shutter as claimed in ...

FAN BANK ASSEMBLY

A portable air movement source includes: a plurality of framed box fans stacked upon and secured to one another, the plurality of framed box fans number between 2 and 4; each framed box fan including a plurality of box fans joined together in frame surrounding the plurality of box fans, the plurality of box fans number between 2 and 4, and each box fan creates a breeze noticeable at 7-25 feet from the box fan; the frame includes a first generally rectangular member and a second generally rectangular member spaced away from the first member, wherein the plurality of box fans is located within and surrounded by the first generally rectangular frame member and the second generally rectangular frame member, the frame is made of metal, plastic, wood, and/or composite materials; and a plurality of caster affixed to the frame whereby the portable air movement source is moveable. 1. A portable air movement source comprises:a plurality of framed box fans stacked upon and secured to one another, the plurality of framed box fans number between 2 and 4;each framed box fan including a plurality of box fans joined together in frame surrounding the plurality of box fans, the plurality of box fans number between 2 and 4, and each box fan creates a breeze noticeable at 7-25 feet from the box fan;the frame includes a first generally rectangular member and a second generally rectangular member spaced away from the first member, wherein the plurality of box fans is located within and surrounded by the first generally rectangular frame member and the second generally rectangular frame member, the frame is made of metal, plastic, wood, and/or composite materials; anda plurality of caster affixed to the frame whereby the portable air movement source is moveable.23. The portable air movement source of wherein the plurality of box fans number .3. The portable air movement source of wherein at least one caster is lockable.4. The portable air movement source of wherein the frame material is ...

Fan device

A fan device for a table of a user comprising a fan, a pivot pin for tilting and a mechanism, for connection to a desktop in the form of two clips or a bracket with screws. It is positioned between the user and the desktop. The pivot pin for tilting is positioned beyond the edge of and within the thickness of the desktop, allowing for a maximum height of protrusion of the fan above and below the desktop less than the dimensions of the fan and allowing to direct the air flow to the greater part of the user area. The technical result is the decrease in the height of protrusion of the fan above and below the desktop.

PORTABLE BLOWER WITH ATTACHMENT CLIP

A portable blower is suitable for blowing leaves and debris. The blower includes a housing defining a handle, a battery compartment, and a motor housing. A DC motor with an output shaft is disposed in the motor housing, and a fan blade is connected to the output shaft. 1. A portable blower comprising:a housing defining a handle, a battery compartment, and a motor housing;batteries disposed in the battery compartment;a DC motor disposed in the motor housing and having an output shaft, the DC motor being electrically connected with the batteries via a power switch; anda fan blade connected to the output shaft,wherein the DC motor is configured for speeds between 8,000-50,000 rpm, and wherein an output of the batteries is between 12-30 volts.2. A portable blower according to claim 1 , further comprising a shroud cover secured to the housing and surrounding the fan blade.3. A portable blower according to claim 1 , wherein the housing comprises a connector tube on an exterior surface claim 1 , the connector tube being sized to receive an extension shaft.4. A portable blower according to claim 3 , wherein the connector tube is integral with the housing.5. A portable blower according to claim 4 , wherein the connector tube is disposed adjacent the motor housing.6. A portable blower according to claim 3 , wherein the housing comprises a connector guide disposed spaced from the connector tube claim 3 , the connector guide being sized to receive the extension shaft in a snap fit.7. A portable blower according to claim 1 , wherein the housing comprises a left side body and a right side body secured together with at least one connector claim 1 , the left and right side bodies being formed of molded plastic.8. A portable blower according to claim 1 , wherein the housing comprises a clip disposed at an end thereof opposite from the motor housing.9. A portable blower according to claim 8 , wherein the clip is integral with a cover for the battery compartment.10. A portable blower ...

POWER EQUIPMENT COOLING SYSTEM

A method of cooling blower components may include rotating a fan assembly () responsive to operation of a motor (). The rotation of the fan assembly may create an underpressure region in an inlet portion () and an overpressure region at a main channel () of the fan assembly (). The method may further include drawing air into the inlet portion () through a control unit housing portion () of a housing () of the blower () to cool a control unit () of the blower (), drawing air into the inlet portion () through a battery compartment () to cool a battery () of the blower (), and pushing air from the main channel () through a motor housing () to cool the motor (). 1. A blower comprising:a housing including a handle portion;a motor provided in a motor housing;a fan assembly operably coupled to the motor to force air through a blower tube responsive to operation of the motor; andcontrol circuitry provided in a control unit housing portion of the housing to selectively apply power to the motor for operation of the motor,wherein the fan assembly draws air into an inlet portion to be expelled at an outlet of the blower tube responsive to operation of the motor, andwherein the control unit housing portion includes at least one inlet aperture in the housing to draw cooling air to cool the control unit prior to expelling the cooling air into the inlet portion via at least one outlet aperture.2. The blower of claim 1 , wherein the motor housing further comprises at least one motor housing inlet aperture to enable a portion of the air passing through the fan assembly to enter the motor housing to cool the motor.3. The blower of claim 2 , wherein the portion of the air that enters the motor housing moves in a direction parallel to a tube axis of the blower tube prior to exiting the motor housing into the blower tube.4. The blower of claim 2 , wherein the at least one motor housing inlet aperture is located between a fan blade and a stator blade of the fan assembly.5. The blower of ...

Axial Fan

The axial fan has a motor (), on the rotor side of which an impeller is fixed, wherein fan blades () with a front and a rear edge () project from the hub of said impeller. The motor () is fixed to a housing () by means of a suspension (). The suspension has a bracing part ( to ) made of a flat material, said bracing part connecting the motor () to the housing () and being arranged in an approximately vertical manner in the flow direction of the air. The aim of the invention is to design the axial fan such that the axial fan has a high overall efficiency and only a low flow resistance. This is achieved in that the bracing part ( to ) is provided with at least one recess () over a part of the length of the bracing part. The flow resistance due to the bracing part is minimized by means of the recess. The recess reduces the weight of the axial fan. The noise emitted by the axial fan is significantly reduced because the size of vortex-related flow separation regions is significantly reduced by means of the recess. 122.-. (canceled)23. An axial fan comprising:a housinga motor comprising a rotor;a blower wheel attached to the rotor;the blower wheel comprising a hub and fan blades attached to the hub;the fan blades comprising a leading edge and a trailing edge, respectively;a suspension arrangement comprising at least one brace part made from flat material;the at least one brace part connecting the motor to the housing;the at least one brace part arranged in a direction of airflow so as to be approximately on edge;the at least one brace part having a length and comprising at least one opening along some of said length;the at least one opening formed by a punch-out in the flat material.24. The axial fan according to claim 23 , wherein the at least one brace part is a sheet metal part.25. The axial fan according to claim 23 , wherein the at least one brace part comprises at least one support part claim 23 , wherein the at least one opening has at least one edge and the at ...

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.

Vacuum Pump

An object is to reduce an adhesion amount of a product in a vacuum pump as a whole and effectively prevent occurrence of a trouble in a vacuum pump electric system due to a magnetic flux leak. A vacuum pump includes a rotor enclosed in a pump case, a rotating shaft fixed to the rotor, a supporting means that rotatably supports the rotating shaft, a driving means that rotates the rotating shaft, and thread-groove-exhaust-portion stators that form thread grove exhaust passages between the thread-groove-exhaust-portion stator and an outer circumferential side of or an inner circumferential side of the rotor. A heating portion is provided below the thread-groove-exhaust-portion stators. The heating portion includes a yoke, a coil, and a heating plate. The heating portion heats the yoke and the heating plate with electromagnetic induction heating by feeding an alternating current to the coil.

A VARIABLE PITCH FAN AND A METHOD FOR VARYING THE BLADE PITCH IN A FAN

A variable pitch fan is provided, which comprises a plurality of blades (), a supporting device () for supporting the blades (), a rotation device () for rotating the supporting device () around a rotation axis (X), so that the blades () rotate with the supporting device () to control an air flow, and an adjusting device for adjusting a pitch of the blades by tilting each blade () around a respective tilt axis (Z), the adjusting device comprising a driven element () fixed relative to a blade (). 1. A variable pitch fan , comprising:a plurality of blades;a supporting device configured to support the plurality of blades;a rotation device configured to rotate the supporting device around a rotation axis, so that the plurality of blades rotate with the supporting device to control an air flow;an adjusting device configured to adjust a pitch of the plurality of blades by tilting each blade of the plurality of blades around a respective tilt axis of a plurality of tilt axes, the adjusting device comprising a plurality of driven elements each fixed relative to a respective blade of the plurality of blades;wherein the adjusting device comprises a plurality of mechanical driving elements supported by the supporting device so as to rotate with the supporting device, each mechanical driving element of the plurality of mechanical driving elements being linearly displaceable relative to the supporting device and being coupled to a respective driven element of the plurality of driven elements so that a linear motion of each mechanical driving element of the plurality of mechanical driving elements is converted into a rotary motion of the respective driven element of the plurality of driven elements around the respective tilt axis of the plurality of tilt axes.2. The variable pitch fan of claim 1 , wherein each mechanical driving element of the plurality of mechanical driving elements comprises a rack claim 1 , and each respective driven element of the plurality of driven elements ...

ANNULAR FAN WIRING STRUCTURE

An annular fan wiring structure includes a frame body and at least one groove annularly formed on an outer circumference of the frame body. The groove has an open end and a closed end opposite to the open end. The open end is flush with the outer circumference of the frame body. According to the structural design of the annular fan wiring structure, the wire assembly can be securely received in the groove to facilitate storage of the annular fan. In addition, multiple annular fans can be most compactly stacked to form an annular fan module. Also, the manufacturing cost of the annular fan is lowered. 1. An annular fan wiring structure comprising a frame body and at least one groove annularly formed on an outer circumference of the frame body , the groove having an open end and a closed end opposite to the open end , the open end being flush with the outer circumference of the frame body.2. The annular fan wiring structure as claimed in claim 1 , wherein at least one first protrusion and at least one second protrusion opposite to the first protrusion are respectively formed on two opposite inner walls of the groove claim 1 , the first and second protrusions respectively protruding from the two opposite inner walls of the groove toward a center of the groove in adjacency to the open end of the groove.33334. The annular fan wiring structure as claimed in claim 2 , wherein the first and second protrusions claim 2 , together define an opening in communication with the groove.4. The annular fan wiring structure as claimed in claim 1 , wherein the groove includes a first groove claim 1 , a second groove claim 1 , a third groove and a fourth groove claim 1 , the first to fourth grooves being annularly formed on the outer circumference of the frame body.5. The annular fan wiring structure as claimed in claim 4 , wherein the first to fourth grooves are arranged at equal intervals.6. The annular fan wiring structure as claimed in claim 4 , wherein the first to fourth grooves ...

FILTER MOUNTS FOR A PORTABLE FAN AND METHODS FOR MOUNTING A FILTER TO A PORTABLE FAN

A filter frame is removably attachable to a box fan. The filter frame is adapted for receiving a standard HVAC-style filter for removing contaminants from air flow induced by the fan. In this manner, a cost-effective means for filtering a flow of air is provided for residential and commercial settings. The filter frame is adaptable to a variety of standard box fan types of different styles and dimensions. The frame is configured to accommodate standard filters, such as those readily available from retail hardware stores and home centers. 1. A removable filter frame for a fan , comprising:a frame body including opposed first and second side channels, the first and second side channels defining a slot for insertion of an air filter, the slot having an upper end that allows for insertion and removal of an air filter, and a lower end that includes a stop for restricting further movement of an inserted air filter;a first attachment position at the first side channel;a second attachment position at the second side channel;a first elastic band and a second elastic band coupled to the frame body at the first and second attachment positions respectively, the elastic bands constructed and arranged to extend about a portion of a fan chassis so that when installed, tension in the elastic bands operates to secure the frame body to a fan; anda diagonal cross member coupled between the first side channel and the second side channel.2. The apparatus of wherein the elastic bands are removably attached to the frame body at the first and second attachment positions.3. The apparatus of further comprising hooks at proximal ends of the elastic bands to removably attach the elastic bands to the frame body at the first and second attachment positions.4. The apparatus of wherein the elastic bands are fixedly attached to the frame body at the first and second attachment positions.5. The apparatus of further comprising hooks at distal ends of elastic bands constructed and arranged to grasp a ...

NACELLE ASSEMBLY

The present disclosure relates generally to a fan nacelle assembly circumferentially surrounding a fan section, the fan nacelle assembly including an inner wall including an inner wall axial length, and an outer wall an outer wall axial length, wherein the outer wall axial length is greater than the inner wall axial length. 1. A gas turbine engine including a fan section , the fan section comprising:a plurality of fan blades;a plurality of guide vanes positioned aft of the plurality of fan blades;a fan containment case circumferentially surrounding the plurality of fan blades and the plurality of guide vanes, the fan casing comprising a first casing coupling member located on an outer surface forward of the plurality of fan blades, and a second casing coupling member located on the outer surface aft of the plurality of guide vanes; and an inner wall including an inner aft end, wherein the inner aft end is operably coupled to the first casing coupling member;', 'an outer wall including an outer wall aft end, wherein the outer wall aft end is positioned aft of the first casing coupling member., 'a fan nacelle assembly circumferentially surrounding the fan casing, the fan nacelle assembly comprising2. The gas turbine of engine of claim 1 , wherein the outer wall is monolithic.3. The gas turbine engine of claim 1 , further comprising an engine accessory affixed to the outer surface of the fan containment case claim 1 , wherein the engine accessory includes an accessory axial length.4. The gas turbine engine of claim 3 , wherein the outer wall further comprises an access opening disposed therein claim 3 , wherein the access opening is located adjacent to the engine accessory.5. The gas turbine engine of claim 3 , wherein the fan nacelle assembly further comprises a fan compartment cowling panel operably coupled to the outer wall aft end and the second casing coupling member claim 3 , wherein the fan cowl panel includes a panel axial length.6. The gas turbine engine of ...

FAN CASING ASSEMBLIES AND METHOD OF MOUNTING A COOLER TO A FAN CASING

A fan casing assembly for a turbine engine including a fan casing having a peripheral wall, a surface cooler having a first surface confronting the peripheral wall and forward and aft projections, which are radially spaced from the first surface and located between the peripheral wall and the first surface, and a mounting bracket to mount the surface cooler to the fan casing and a method of mounting a surface cooler to a fan casing of a turbine engine. 1. A fan casing assembly comprising:an annular fan casing having peripheral wall and opposing forward and aft edges and at least one fan casing fastener opening passing through the peripheral wall;an annular surface cooler having a first surface confronting the peripheral wall and having opposing forward and aft edges, with corresponding forward and aft hooks, which are radially spaced from the first surface and located between the peripheral wall and the first surface; anda mounting bracket having a body with opposing first and second flanges and at least one mounting bracket fastener opening corresponding to the fan casing fastener opening, wherein the first and second flanges underlie the corresponding forward and aft hooks, and a fastener extends through the corresponding fan casing fastener opening and mounting bracket fastener opening to retain the annular surface cooler to the annular fan casing.2. The fan casing assembly of wherein one of the forward and aft hooks extends in an aft direction and the other of the forward and aft hooks extends in a forward direction.3. The fan casing assembly of claim 1 , further comprising a wear attenuator located between the first and second flanges and the forward and aft hooks.4. The fan casing assembly of wherein the wear attenuator includes a set of C-shaped wear attenuators located about a free end of the forward and aft hooks.5. The fan casing assembly of wherein the wear attenuator is made from PEEK.6. The fan casing assembly of claim 1 , further comprising a cover ...

MASKING BLADED DISC FOR REDUCING THE RADAR SIGNATURE OF A MOVING COMPRESSOR MOVING DISC OF A JET ENGINE

A bladed disc for masking a moving disc of a jet engine, including blades, each blade including a pressure-side wall and a suction-side wall that meet at a leading-edge and at a trailing edge, and wherein each blade has a pressure-side wall and a suction-side wall each including a concave zone and a convex zone that are at a distance from the leading-edge and from the trailing edge and are spaced apart from one another, these concave zones and these convex zones each extending over the majority of the height of the blade, the concave zone of the pressure-side wall is opposite the convex zone of the suction-side wall, the concave zone of the suction-side wall is opposite the convex zone of the pressure-side wall. 1. A bladed wheel for masking a moving wheel of a turbojet engine , comprising vanes , each vane including a lower surface wall and an upper surface wall joined at a leading edge and at a trailing edge and extending along a span axis from a root to a tip , and wherein:the lower surface wall includes an upstream portion extending from the leading edge to a convex zone of said lower surface wall, a central portion extending from the convex zone to a concave zone of said lower surface wall, and a downstream portion extending from the concave zone to the trailing edge;the upper surface wall includes an upstream portion extending from the leading edge to a concave zone of said upper surface wall, a central portion extending from the concave zone to a convex zone of said upper surface wall, and a downstream portion extending from the convex zone to the trailing edge;said concave zones and said convex zones each extend over most of the height of the vane along its span axis;the concave zone of the lower surface wall faces the convex zone of the upper surface wall, and the concave zone of the upper surface wall faces the convex zone of the lower surface wall.2. The bladed wheel according to claim 1 , wherein each vane is a variable setting vane.3. The bladed wheel ...

CEILING FAN AND FAN SET

A ceiling fan and a fan set are provided. The fan set includes an upper fixed plate, a lower fixed plate, and a plurality of fan blades. The upper fixed plate has a plurality of first through holes that are in a ring-shaped arrangement, and the lower fixed plate has a plurality of second through holes that are in a ring-shaped arrangement. The quantity of the second through holes is equal to the quantity of the first through holes, and the positions of the second through holes respectively correspond to the positions of the first through hole. Each of the fan blades has an assembly portion, a blade portion, and three fasteners. The fasteners pass through the first through holes and the second through holes such that each of the fan blades is fastened between the upper fixed plate and the lower fixed plate. 1. A ceiling fan for being disposed on a ceiling , the ceiling fan comprising:a top cover;a rod having two ends, wherein one of the two ends of the rod is connected to the top cover;an external rotor motor disposed on another one of the two ends of the rod, wherein the external rotor motor includes a fixed unit and a rotating unit that is assembled on the fixed unit, and wherein the fixed unit is assembled on the another one of the two ends of the rod, and the rotating unit is rotatable relative to the fixed unit; and an upper fixed plate disposed on a side of the rotating unit adjacent to the rod and having a plurality of first through holes that are in a ring-shaped arrangement, wherein the quantity of the first through holes is 3M, and M is a positive integer equal to or greater than 3;', 'a lower fixed plate disposed on a side of the rotating unit away from the rod and spaced apart from the upper fixed plate, wherein the lower fixed plate has a plurality of second through holes that are in a ring-shaped arrangement, and wherein the quantity of the second through holes is equal to the quantity of the first through holes, and the positions of the second through ...