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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 3210. Отображено 100.
26-01-2012 дата публикации

Diagonal fan

Номер: US20120020778A1
Автор: Gerhard Ruck
Принадлежит: ruck Ventilatoren GmbH

A diagonal fan for gaseous media has a diagonal impeller with a plurality of vanes, which are fastened on a carrier plate, and a guide device, adjoining the diagonal impeller in the axial direction on the outflow side, for increasing the pressure of the medium, with a plurality of guide vanes. The vanes of the diagonal impeller and/or the guide vanes of the guide device are three-dimensionally twisted. By means of an intake unit, the gaseous medium can be directed into the diagonal impeller. The intake unit and/or an exhaust unit, by means of which the gaseous medium can be directed out of the guide device, is, or are, provided as an exchangeable module and can be fastened on the diagonal fan by means of a fastening element.

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Номер записи: 1
02-02-2012 дата публикации

Impeller and rotary machine

Номер: US20120027599A1
Автор: Jo Masutani
Принадлежит: Mitsubishi Heavy Industries Ltd

An impeller of a rotary machine, in which the direction of flow changes from an axial direction to a radial direction as it goes from the inside in the radial direction of a fluid flow passage to the outside in the radial direction thereof, includes: a hub surface constituting at least a portion of the fluid flow passage; a blade surface constituting at least a portion of the fluid flow passage; and a bulge that bulges toward the inside of the fluid flow passage at a corner where a pressure surface, which configures the blade surface, comes in contact with the hub surface in the vicinity of an inlet of the fluid flow passage.

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Номер записи: 2
09-08-2012 дата публикации

Impeller and fluid pump

Номер: US20120201700A1
Автор: Edward J. TALASKI
Принадлежит: TI Group Automotive Systems LLC

A fluid pump may include an electric motor having an output shaft driven for rotation about an axis and a pump assembly coupled to the output shaft. The pump assembly has a first cap and a second cap with at least one pumping channel defined between the first and second caps, and an impeller between the first and second caps. The impeller is driven for rotation by the output shaft of the motor and includes a plurality of vanes in communication with the at least one pumping channel. Each vane has a root segment and a tip segment and a line from a base of the root segment to an outer edge of the tip segment trails a line extending from the axis of rotation to the base of the root segment by an angle of between 0° and 30° relative to the direction of rotation of the impeller.

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Номер записи: 3
18-10-2012 дата публикации

Impeller and turbomachinery including the impeller

Номер: US20120263599A1
Автор: Hideo Nishida, Hiromi Kobayashi, Kazuyuki Sugimura, Toshio Ito
Принадлежит: Hitachi Plant Technologies Ltd

An impeller includes a hub plate and a plurality of blades circumferentially disposed at intervals on one surface side of the hub plate. Each blade has a shape formed by piling up a plurality of blade sections in a blade height-wise direction of each blade in a reference impeller in which the hub plate intersects with the blades and which includes a linear element blade in the blade height-wise direction so as to form a curvilinear element blade. In piling up the blade sections, amounts of tangential lean and sweep to be applied to the blade sections are increased as it goes from an end face of at least one of a hub plate side end and a counter hub plate side end toward a span intermediate part of the blade.

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Номер записи: 4
28-03-2013 дата публикации

ELECTRICAL MACHINE HAVING A FAN WHEEL

Номер: US20130078102A1
Автор: Dikmenli Erdogan
Принадлежит: ROBERT BOSCH GMBH

The invention relates to an electrical machine having a fan wheel which comprises an injection-moulded blade carrier ring with fan blades as well as an annular insertion part which is integrated into the blade carrier ring and which comprises passage openings via which the blade carrier ring is connected to the fan blades. 14528524. An electrical machine having a fan impeller , having at least one injection-molded blade support ring having fan blades () and an annular insert part () which is integrated in the blade support ring () , characterized in that passage openings () are made in the insert part () , the blade support ring () being connected to the fan blades () via said passage openings.252. The electrical machine as claimed in claim 1 , characterized in that a smallest inside radius (r) of the insert part () is smaller than a smallest inside radius (r) of the blade support ring ().345. The electrical machine as claimed in claim 1 , characterized in that the fan blades () each have a radial extent and rest on an end face of the insert part () over the entire radial extent.4542. The electrical machine as claimed in claim 1 , characterized in that a surface of an end face of the insert part () which is situated opposite the fan blades () is covered by material of the blade support ring ().525. The electrical machine as claimed in claim 1 , characterized in that the blade support ring () surrounds a radially outer circumferential face of the insert part ().6592. The electrical machine as claimed in claim 1 , characterized in that a radially outer circumferential face of the insert part () is provided with an interlocking geometry in the form of radial indentations () or projections claim 1 , and the interlocking geometry is covered by the blade support ring ().79. The electrical machine as claimed in claim 6 , characterized in that the indentations () are in the form of triangular notches.848. The electrical machine as claimed in claim 1 , characterized in that ...

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Номер записи: 5
11-04-2013 дата публикации

Blade structure for centrifugal fan

Номер: US20130089425A1
Автор: Chun-Ming Wu
Принадлежит: Individual

A blade structure for centrifugal fan includes a hub, a first blade unit, and a second blade unit. The hub includes at least one connection section, to a radially outer end of which an annular body is connected. The annular body has a first side and an opposite second side; and the first and the second blade unit are arranged on and spaced along the first and the second side of the annular body, respectively. By providing the first and the second blade unit around the hub of a centrifugal fan, the air flows and pressure produced by the centrifugal fan can be largely increased at effectively reduced noise.

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Номер записи: 6
12-09-2013 дата публикации

Centrifugal fan

Номер: US20130236303A1
Автор: Hiroyoshi Teshima, Takuya Teramoto
Принадлежит: Nidec Corp

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

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Номер записи: 7
26-09-2013 дата публикации

ROTARY MACHINE

Номер: US20130251531A1
Автор: Nakaniwa Akihiro, Shinohara Hitoshi, YAGI Nobuyori
Принадлежит:

Provided is a rotary machine including: a shaft that rotates; a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; and an impeller having a plurality of blades provided on a surface of the disc. The hub has a tight fit section having an internal radius that is smaller than a radius of the shaft, and a loose fit section having an internal radius that is greater than the internal radius of the tight fit section. The loose fit section is provided on the front end side of the hub with respect to the tight fit section. 1. A rotary machine comprising:a shaft that rotates;a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; andan impeller having a plurality of blades provided on a surface of the disc, a tight fit section having an internal radius that is smaller than a radius of the shaft, and', 'a loose fit section having an internal radius that is greater than the internal radius of the tight fit section, and, 'wherein the hub comprisesthe loose fit section is provided on the front end side of the hub with respect to the tight fit section.2. The rotary machine according to claim 1 , wherein a groove portion dented so as to surround the hub is provided on a rear surface of the surface of the disc.3. The rotary machine according to claim 1 , wherein a first tapered portion having an external radius gradually increasing toward the front end of the hub is provided in the rear end of the hub.4. The rotary machine according to claim 3 , further comprising:a sleeve that is fitted into the shaft so as to come into contact with the front end of the hub, and guides the air flow to the disc.5. The rotary machine according to claim 4 , wherein the plurality of impellers are provided in series in the shaft claim 4 ,a sleeve that guides the air ...

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Номер записи: 8
28-11-2013 дата публикации

IMPELLER FOR ELECTRIC BLOWER

Номер: US20130315743A1
Автор: CHO Yong Wan
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is an impeller for an electric blower including: an upper plate; a lower plate; and a blade positioned between the upper plate and the lower plate, wherein the lower plate includes a burring part formed at an inner diameter portion thereof to which a shaft is insertedly coupled. In addition, disclosed herein is an impeller for an electric blower including: an upper plate; a lower plate; and a blade positioned between the upper plate and the lower plate, wherein the lower plate includes a burring part formed at an inner diameter portion thereof to which a shaft is insertedly coupled and a washer part extended in a direction perpendicular to the burring part. 1. An impeller for an electric blower comprising:an upper plate;a lower plate; anda blade positioned between the upper plate and the lower plate,wherein the lower plate includes a burring part formed at an inner diameter portion thereof to which a shaft is insertedly coupled.2. The impeller as set forth in claim 1 , wherein the burring part is protruded so that the inner diameter portion of the lower plate into which the shaft is inserted stands up vertically toward the upper plate.3. The impeller as set forth in claim 1 , wherein the shaft is insertedly coupled to the burring part of the lower plate claim 1 , and the nut is screw-coupled to an upper end portion of the shaft so as to be positioned at an upper end portion of the burring part.4. The impeller as set forth in claim 1 , further comprising auxiliary members positioned at an inner diameter portion of the impeller to which the shaft is coupled.5. The impeller as set forth in claim 4 , wherein the auxiliary members are coupled to both surfaces of the lower plate claim 4 , having the lower plate therebetween claim 4 , and an upper surface of the auxiliary member positioned on an upper surface of the lower plate is fixed by the nut.6. An impeller for an electric blower comprising:an upper plate;a lower plate; anda blade positioned between ...

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Номер записи: 9
05-12-2013 дата публикации

CENTRIFUGAL BLOWER WITH COOLING FUNCTION

Номер: US20130319642A1
Автор: Higashiyama Naohisa
Принадлежит: KEIHIN THERMAL TECHNOLOGY CORPORATION

A centrifugal blower with a cooling function includes an impeller, a scroll casing, and an evaporator. The impeller includes a plurality of blades provided around a rotary shaft and blows out in a radially outward direction air taken in along the axial direction of the rotary shaft. The scroll casing accommodates the impeller, and has an intake port, a spiral air passage, and a discharge port. The evaporator is disposed in the air passage of the scroll casing. The evaporator includes a plurality of refrigerant passage members which are stacked in the longitudinal direction of the rotary shaft of the impeller and each of which has a refrigerant flow channel. An air-passing clearance is provided between adjacent refrigerant passage members. The centrifugal blower with a cooling function is used for a vehicle air conditioner. 1. A centrifugal blower with a cooling function comprising:an impeller which includes a plurality of blades provided around a rotary shaft and which blows out in a radially outward direction air taken in along an axial direction of the rotary shaft;a scroll casing which accommodates the impeller and which has an intake port for taking in air along the axial direction of the rotary shaft of the impeller, a spiral air passage through which the air blown out from the impeller flows, and a discharge port for blowing out the air having flowed through the air passage; andan evaporator which is disposed in the air passage of the scroll casing and which has a refrigerant flow channel and an air-passing clearance through which the air flowing through the air passage passes.2. A centrifugal blower with a cooling function according to claim 1 , wherein the evaporator includes a plurality of refrigerant passage members stacked in the longitudinal direction of the rotary shaft of the impeller claim 1 , the refrigerant flow channel is provided in each of the refrigerant passage members claim 1 , and the air-passing clearance is provided between adjacent ...

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Номер записи: 10
05-12-2013 дата публикации

Propeller For Ventilator, With A Variable Blade Angle

Номер: US20130323062A1
Автор: Demory Bruno, Henner Manuel, Tannoury Elias
Принадлежит: VALEO SYSTEMES THERMIQUES

A blower wheel comprises a hub, a guide and blades extending radially between the hub and the guide, each blade comprising a root at its junction with the hub and a head at the junction with the guide, each blade having a leading edge and a trailing edge between which, at each flattened cross section, a chord is defined. For each blade, in the radial direction from the root to the head, the pitch angle between the chord and the rotation axis of the wheel varies and the variation in the pitch angle between the root and the head has a point of inflexion between a first level and a second level. 1. A blower wheel for cooling an engine for driving a motor vehicle , said blower wheel comprising a hub , a guide and blades extending radially between the hub and the guide , each blade comprising a root at its junction with the hub and a head at the junction with the guide , each blade having a leading edge and a trailing edge between which , at each flattened cross section , a chord is defined , wherein for each blade , in the radial direction from the root to the head , a pitch angle between the chord and the rotation axis of the wheel varies and wherein the variation in the pitch angle between the root and the head has a point of inflexion between a first level and a second level.2. The wheel as claimed in claim 1 , wherein in the radial direction claim 1 , the pitch angle increases sharply with the radius up to the first level and the pitch angle increases again with the radius between the first level and the second level.3. The wheel as claimed in claim 1 , wherein at the head claim 1 , the pitch angle reduces sharply between the second level and the head.4. The wheel as claimed in claim 3 , wherein in the radial direction claim 3 , the pitch angle reduces sharply with the radius up to the first level and the pitch angle reduces again with the radius between the first level and the second level.5. The wheel as claimed in claim 1 , wherein the pitch angle increases ...

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Номер записи: 11
09-01-2014 дата публикации

Blower wheel with improved wheel hub to blade interface

Номер: US20140010657A1
Автор: Jayanthi Iyer
Принадлежит: Visteon Global Technologies Inc

A blower wheel for use in a blower assembly includes a hub, a concentrically arranged outer ring, an array of spaced apart blades extending between the hub and the outer ring. The hub includes an outer first surface and an inner second surface. An interface between an outer edge of a first end of each of the blades and an outer peripheral edge of the outer first surface of the hub is minimized, increasing an effective blade exit height of the blower wheel. As such, an effective open area for airflow between the blades of the blower wheel is increased over that of the prior art blower wheels. Further, a substantially planar lower face of the hub provides additional structural integrity to the hub, and thereby the blades.

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Номер записи: 12
05-01-2017 дата публикации

Blower for breathing apparatus

Номер: US20170002830A1
Автор: Johannes Nicolaas Bothma
Принадлежит: Fisher and Paykel Healthcare Ltd

A blower for a breathing apparatus has a diffuser for increasing static pressure and/or reducing noise and/or mitigating pressure instabilities and/or managing reverse flow.

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Номер записи: 13
02-01-2020 дата публикации

WHEEL BLADE FOR TURBOMACHINE, COMPRISING A WINGLET AT ITS TIP AND AT THE LEADING EDGE

Номер: US20200003219A1
Автор: ARTUS Fabien, BOUCHIA Youssef, Tarnowski Laurent Pierre
Принадлежит: SAFRAN HELICOPTER ENGINES

A wheel blade for a turbomachine compressor. The blade comprises a body extending between the root of the blade in the direction of the height of the blade. The body extends from a leading-edge to a trailing edge in a direction of the camber line of the blade. The blade comprises a winglet located in the extension of the body in the direction of the height. The winglet is located at the tip of the blade and at the leading edge of the blade. The body has a curvature oriented in a first direction of rotation with respect to the direction of the camber line, the winglet having a curvature in a second direction of rotation counter to the first direction of rotation. 112-. (canceled)13. A wheel blade for a compressor of a turbomachine , comprising:a root and a tip that are spaced apart from each other in the height direction of the blade,a body running from the root to the tip in the height direction and running from a leading edge to a trailing edge in a direction of the skeleton of the blade,wherein the blade comprises a winglet located along the extension of the body in the height direction, at the tip of the blade and on the leading edge of the blade,wherein the body has a curvature oriented in a first direction of rotation about a direction parallel to the direction of the skeleton of the blade, and wherein the winglet has a curvature solely in a second direction of rotation that is opposite the first direction of rotation.14. A blade according to claim 13 , wherein the winglet starts at the leading edge and extends in the direction of the trailing edge.15. A blade according to claim 13 , wherein the length of the winglet in the direction of the skeleton of the blade is between 0% and 100% of the length of the blade in the direction of the skeleton of the blade.16. A blade according to claim 13 , wherein the width of the winglet in the transverse direction of the blade gradually decreases from the leading edge to the trailing edge.17. A blade according to claim 13 , ...

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Номер записи: 14
02-01-2020 дата публикации

COMPRESSOR AND TURBOCHARGER

Номер: US20200003223A1
Автор: Iwakiri Kenichiro
Принадлежит: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

A compressor comprises: a rotor including a hub and a blade provided on an outer peripheral surface of the hub; and a casing surrounding the rotor so as to face a tip of the blade across a gap. Provided that the gap between the tip of the blade and the casing has a size t0 at a leading edge of the blade, the gap between the tip of the blade and the casing has a size larger than t0 in at least a partial range downstream of the leading edge in an axial direction of the rotor. 18-. (canceled)9. A compressor , comprising:a rotor including a hub and a blade provided on an outer peripheral surface of the hub; anda casing surrounding the rotor so as to face a tip of the blade across a gap,whereinprovided that the gap between the tip of the blade and the casing has a size t0 at a leading edge of the blade, the gap between the tip of the blade and the casing has a size larger than t0 in at least a partial range downstream of the leading edge in an axial direction of the rotor andwherein{'sub': MAX', 'MAX, 'in a size distribution of the gap between the tip of the blade and the casing from the leading edge to a trailing edge of the blade, a maximum value tof the gap satisfies 1.1t0≤t≤1.5t0.'}10. The compressor according to claim 9 ,whereinprovided that a meridional length from the leading edge along the tip of the blade is L and that a meridional length from the leading edge to the trailing edge of the blade along the tip of the blade is L1, the gap between the tip of the blade and the casing has a size larger than t0 in at least a part of a range 0 Подробнее

Номер записи: 15
12-01-2017 дата публикации

ELECTRICALLY DRIVEN PUMP

Номер: US20170009779A1
Автор: BAO Junfeng, Fang Chen, NIU Lianjing, ZHANG Junchao, Zhang Rongrong
Принадлежит: Hangzhou Sanhua Research Institute Co., Ltd.

An electrically driven pump is provided, which includes an impeller. The impeller includes an upper plate, blades and a lower plate. The blades are formed on a lower surface of the upper plate, the blades include first blades and second blades, and a length of each of the first blades is greater than a length of each of the second blades. The first blades are uniformly distributed along a circumference of the upper plate. The first blades and the second blades are distributed alternately in the circumferential direction. The first blades each include a first head portion and a first tail portion, the second blade includes a second head portion and a second tail portion, and the first tail portion and the second tail portion are aligned with outer edge of the upper plate. The impeller arranged in such manner facilitates the improvement of hydraulic efficiency and lift. 1. An electrically driven pump , comprising a rotor assembly , a stator assembly , and a partition , wherein the rotor assembly and the stator assembly are partitioned by the partition , the rotor assembly comprises an impeller , the impeller comprises an upper plate , blades and a lower plate , the blades are provided between the upper plate and the lower plate , and the upper plate comprises an upper surface and a lower surface , wherein ,the blades and the upper plate are integrally formed by injection molding, the blades are located on the lower surface of the upper plate, the blades comprise first blades and second blades, and each of the first blades and the second blades comprises a camber, or a combination of two or more than two cambers, or a combination of a camber and a plane;a length of each of the first blades is greater than a length of each of the second blades, the first blades are uniformly distributed along a circumference of the upper plate, and the second blades are uniformly distributed along the circumference of the upper plate;a number of the first blades is the same as a number ...

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Номер записи: 16
14-01-2016 дата публикации

FAN IMPELLER STRUCTURE AND COOLING FAN THEREOF

Номер: US20160010655A1
Автор: Wu Chun-Ming
Принадлежит:

A fan impeller structure and a cooling fan thereof. The fan impeller structure includes a hub and a flow guide body. The hub has an extension section extending from outer circumference of the hub. The extension section has a first face and a second face. An axial center of the flow guide body is defined with an axial line. A fitting section outward extends from the axial line. A spoiler section is connected to the fitting section in a direction away from the axial line. The spoiler section is formed with multiple axial perforations and multiple radial perforations. The flow guide body is disposed on the first face or the second face of the extension section of the hub. The flow guide body is employed to replace the blades of conventional cooling fan. The perforations of the flow guide body can forcedly guide air in a narrow space. 1. A fan impeller structure comprising:a hub; anda flow guide body, an axial center of the flow guide body being defined with an axial line, a fitting section outward extending from the axial line, a spoiler section being connected to the fitting section in a direction away from the axial line, the spoiler section being formed with multiple axial perforations and multiple radial perforations, the flow guide body being fitted around the hub via the fitting section.2. The fan impeller structure as claimed in claim 1 , wherein the flow guide body is selected from a group consisting of foamed porous structure body claim 1 , sponge claim 1 , porous wooden material and foamed metal.3. The fan impeller structure as claimed in claim 1 , wherein a shaft is inserted in the hub.4. The fan impeller structure as claimed in claim 1 , wherein the axial perforations and radial perforations of the spoiler section communicate with each other.5. The fan impeller structure as claimed in claim 1 , wherein the flow guide body has the form of a circular disc body or an elliptic disc body or a geometric plate body.6. A fan impeller structure comprising:a hub, the ...

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Номер записи: 17
10-01-2019 дата публикации

IMPELLER OF CENTRIFUGAL FAN AND METHOD AND APPARATUS FOR MANUFACTURING THE SAME

Номер: US20190010961A1
Автор: KUMAOU Shigeo
Принадлежит:

An impeller of a centrifugal fan includes multiple blades arranged annularly around a rotational axis, a main plate, a shroud, main plate-side welded portions between main plate-side blade axial ends of the blades and the main plate, and shroud-side welded portions between shroud-side blade axial ends of the blades and the shroud. The main plate is arranged opposite to main plate-side blade axial ends. The shroud is arranged opposite to shroud-side blade axial ends. The main plate-side welded portions have main plate-side welding holes that are recesses extending through the main plate to portions of the main plate-side blade axial ends. The shroud-side welded portions have shroud-side welding holes that are recesses extending through the shroud to portions of the shroud-side blade axial ends. 1. An impeller of a centrifugal fan , the impeller comprising:multiple blades arranged annularly around a rotational axis, each blade having two blade axial ends that are both ends along a direction of the rotational axis;a main plate arranged opposite to a main plate-side blade axial end that is one of the two blade axial ends of each of the blades;a shroud arranged opposite to a shroud-side blade axial end that is an other of the two blade axial ends of each of the blades;main plate-side welded portions between the main plate-side blade axial ends and the main plate, the main plate-side welded portions having main plate-side welding holes that are recesses extending through the main plate to portions of the main plate-side blade axial ends; andshroud-side welded portions between the shroud-side blade axial ends and the shroud, the shroud-side welded portions having shroud-side welding holes that are recesses extending through the shroud to portions of the shroud-side blade axial ends.2. The impeller of the centrifugal fan according to claim 1 , whereinthe main plate has a blade-side main plate surface arranged opposite to the main plate-side blade axial ends and an opposite- ...

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Номер записи: 18
09-01-2020 дата публикации

Phi Fan

Номер: US20200011344A1
Автор: Krahn Gilbert H.
Принадлежит:

A fluid displacement device including a center shaft and a plurality of vanes. Each of the plurality of vanes has an inner edge, an outer edge, and a spiraling edge disposed between the inner edge and the outer edge. The spiraling edge of each of the plurality of vanes follows a Fibonacci spiral based on circular arcs traced through a Fibonacci tiling comprising squares having side lengths that are a multiple of at least five successive Fibonacci numbers. 1. A fluid displacement device , comprising:a center shaft;a plurality of vanes, each of the plurality of vanes having an inner edge, an outer edge, and a spiraling edge disposed between the inner edge and the outer edge;wherein the spiraling edge of each of the plurality of vanes follows a Fibonacci spiral based on circular arcs traced through a Fibonacci tiling comprising squares having side lengths that are a multiple of at least five successive Fibonacci numbers.2. The fluid displacement device of claim 1 , wherein the plurality of vanes comprises from two to five vanes.3. The fluid displacement device of claim 1 , wherein the outer edges of the plurality of vanes are substantially equidistantly spaced around the center shaft.4. The fluid displacement device of claim 1 , wherein the at least five successive Fibonacci numbers are 1 claim 1 , 1 claim 1 , 2 claim 1 , 3 claim 1 , 5.5. The fluid displacement device of claim 1 , wherein the at least five successive Fibonacci numbers comprises at least six Fibonacci numbers.6. The fluid displacement device of claim 5 , wherein the at least six Fibonacci numbers are 1 claim 5 , 1 claim 5 , 2 claim 5 , 3 claim 5 , 5 claim 5 , 8.7. The fluid displacement device of claim 1 , wherein the center shaft has a first end and a second end defining a length of the center shaft therebetween and wherein the length is from 10 to 20 times the side length of a first square of the Fibonacci tiling.8. The fluid displacement device of claim 7 , wherein the length is from 13 to 17 times ...

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Номер записи: 19
03-02-2022 дата публикации

SYSTEMS AND METHODS FOR IMPROVING AIRFLOW IN A CENTRIFUGAL BLOWER

Номер: US20220034330A1
Автор: ADURY Kashyap, DURGAPPA Sudeendra, KAATZ Keith Walter, Shah Ketan R.
Принадлежит:

An impeller for a centrifugal blower includes at least one blade oriented in a radial direction of the impeller. The blade has an airfoil section with a radially inward end and a radially outward end that are thinner than at least one point between the radially inward end and the radially outward end. 1. An impeller for a centrifugal blower , the impeller comprising:at least one blade oriented in a radial direction of the impeller, the blade including an airfoil section with a radially inward end and a radially outward end that are thinner than at least one point between the radially inward end and the radially outward end.2. The impeller of claim 1 , wherein the airfoil is raked in backward direction relative to a rotational direction of the impeller.3. The impeller of claim 2 , wherein the rake of at least a portion of the airfoil section is between −15° and −30°.4. The impeller of claim 1 , wherein the airfoil section has National Advisory Committee for Aeronautics (NACA) 4405 geometry.5. The impeller of claim 1 , wherein the blade is continuous between a hub and a support ring radially outward from the hub.6. The impeller of claim 5 , wherein the support ring is connected to and supports the radially outward end of the airfoil section.7. The impeller of claim 1 , wherein the impeller comprises a plurality of blades with a varying pitch between blades of the plurality of blades.8. The impeller of claim 1 , wherein the airfoil section is curved in backward direction relative to a rotational direction of the impeller.9. The impeller of claim 1 , wherein at least a portion of the airfoil section has a tilt in the direction of rotation.10. An impeller for a centrifugal blower claim 1 , the impeller comprising:a hub configured to connect to an axle at a rotational axis; and an airfoil section with a radially inward end and a radially outward end that are thinner than at least one point between the radially inward end and the radially outward end, the airfoil section ...

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Номер записи: 20
19-01-2017 дата публикации

AXIAL-FLUX INDUCTION MOTOR PUMP

Номер: US20170016449A1
Автор: Gieras Jacek F., Ribarov Lubomir A.
Принадлежит:

A pump comprises a housing partially defining a cavity, an impeller arranged in cavity, the impeller including a first disk, and a vane arranged on the first disk, the impeller operative to rotate about a rotational axis, a first stator core arranged on the housing, windings arranged on the first stator core, and a first inlet defined by the housing, wherein the first inlet, the impeller, and the housing partially define a fluid flow path. 1. A pump comprising:a housing partially defining a cavity;an impeller arranged in cavity, the impeller including a first disk, and a vane arranged on the first disk, the impeller operative to rotate about a rotational axis;a first stator core arranged on the housing;windings arranged on the first stator core; anda first inlet defined by the housing, wherein the first inlet, the impeller, and the housing partially define a fluid flow path.2. The pump of claim 1 , further comprising a conductive material arranged on a surface of the first disk such that the conductive material is disposed between the first disk and the first stator core such that the conductive material and the first stator core partially define a gap therebetween.3. The pump of claim 1 , wherein further comprising a second stator core arranged on the housing claim 1 , wherein the second stator core is arranged circumferentially about the rotational axis.4. The pump of claim 1 , wherein the first disk includes a ferromagnetic material that is conductive to electric current and magnetic flux.5. The pump of claim 3 , wherein the impeller further includes a second disk arranged such that the vane is disposed between the second disk and the first disk claim 3 , the second disk including a ferromagnetic material that is conductive to electric current and magnetic flux.6. The pump of claim 5 , further comprising a conductive material arranged on a surface of the second disk such that the conductive material is disposed between the second disk and the second stator core ...

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Номер записи: 21
18-01-2018 дата публикации

SIDE-CHANNEL BLOWER FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20180017069A1
Автор: BOUTROS-MIKHAIL MATTHIAS, Peters Rainer
Принадлежит: PIERBURG GMBH

A side-channel blower for an internal combustion engine includes a flow housing, an impeller which rotates in the flow housing, a housing wall which surrounds the impeller, a drive unit which drives the impeller, impeller blades arranged in a radially outer region of the impeller, a radial gap arranged between the impeller and the housing wall, an inlet, an outlet, two flow channels which connect the inlet to the outlet, and an interruption zone arranged between the outlet and the inlet which interrupts the two flow channels in a peripheral direction. The impeller blades open in a radially outward direction. A respective one of the two flow channels is respectively formed axially opposite to the impeller blades in the flow housing. The impeller blades each comprise a V-shaped cross-section. 17-. (canceled)8. A side-channel blower for an internal combustion engine , the side-channel blower comprising:a flow housing;an impeller comprising a rotary axis and being configured to rotate in the flow housing;a housing wall configured to radially surround the impeller;a drive unit configured to drive the impeller;impeller blades arranged in a radially outer region of the impeller, the impeller blades being configured to open in a radially outward direction;a radial gap arranged between the impeller and the housing wall;an inlet;an outlet;two flow channels configured to connect the inlet to the outlet and to be fluidically connected to one another via intermediate spaces between the impeller blades, a respective one of the two flow channels being respectively formed axially opposite to the impeller blades in the flow housing; andan interruption zone arranged between the outlet and the inlet, the interruption zone being configured to interrupt the two flow channels in a peripheral direction,wherein,the impeller blades, as seen from a cross section of a plane on which the rotary axis lies, each comprise a V-shaped cross-section so that, in a direction of rotation of the ...

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Номер записи: 22
18-01-2018 дата публикации

Side-channel blower for an internal combustion engine, comprising a wide interrupting gap

Номер: US20180017084A1
Автор: Matthias Boutros-Mikhail, Rainer Peters
Принадлежит: PIERBURG GMBH

A side-channel blower for an internal combustion engine includes a flow housing, an impeller which rotates in the flow housing, a drive unit which drives the impeller, a housing wall with a radially delimiting housing wall, impeller blades arranged in a radially outer region of the impeller, a radial gap arranged between the impeller and the housing wall, an inlet, an outlet, and two flow channels. The housing wall radially surrounds the impeller. The impeller blades open in a radially outward direction. The two flow channels connect the inlet to the outlet and are fluidically connected to one another via intermediate spaces between the impeller blades. An interruption zone is arranged between the outlet and the inlet which interrupts the two flow channels in a peripheral direction. A radial interrupting gap is arranged between the impeller and the radially delimiting housing wall in the entire interruption zone.

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Номер записи: 23
16-01-2020 дата публикации

INJECTION-MOLDED IMPELLER

Номер: US20200016800A1
Автор: YAMAGUCHI Tetsuo
Принадлежит:

An injection-molded impeller includes a center shaft portion and a plurality of vanes. The plurality of vanes are formed at a peripheral area of the center shaft portion at regular intervals. The injection-molded impeller is rotated around an axial center CL of the center shaft portion to flow out a fluid flowed in between the adjacent vanes from a direction along the axial center CL of the center shaft portion toward a radially outer side. The vanes include non-deflecting shape portions and arc-shaped flow deflecting portions. The non-deflecting shape portions linearly extend from the center shaft portion along a radial direction. The flow deflecting portions extend from the non-deflecting shape portions to radially outward ends. The vanes are formed in a spiral pattern from one end side to another end side along the axial center CL of the center shaft portion. 1. An injection-molded impeller comprising:a center shaft portion; anda plurality of vanes formed at a peripheral area of the center shaft portion at regular intervals, whereinthe injection-molded impeller is rotated around an axial center of the center shaft portion to flow out a fluid flowed in between the adjacent vanes from a direction along the axial center of the center shaft portion toward a radially outer side, andthe vanes include non-deflecting shape portions and arc-shaped flow deflecting portions, the non-deflecting shape portions linearly extend from the center shaft portion along a radial direction, the flow deflecting portions extend from the non-deflecting shape portions to radially outward ends, and the vanes are formed in a spiral pattern from one end side to another end side along the axial center of the center shaft portion.2. The injection-molded impeller according to claim 1 , whereinthe vanes are formed in the spiral pattern at constant helix angles from the one end side to the other end side along the axial center of the center shaft portion.3. The injection-molded impeller according ...

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Номер записи: 24
17-01-2019 дата публикации

BLOWER

Номер: US20190017515A1
Автор: Kato Shinya, SEKITO Yasuhiro
Принадлежит: Denso Corporation

A blower configured to suction and discharge first fluid and second fluid includes a fan and a division wall. The fan is configured to rotate relative to the division wall. The division wall is spaced from the fan and positioned in a suction space, the division wall partitioning the suction space into a space through which the first fluid passes and a space through which the second fluid passes. The division wall includes a base and a widened portion. The base guides flows of the first fluid and the second fluid toward the fan. In the suction space, the widened portion is closer to a rotation area of the fan than the base is. A width of the widened portion in a direction along a thickness of an end of the base connected to the widened portion is larger than the thickness of the end of the base.

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Номер записи: 25
28-01-2016 дата публикации

IMPELLER FOR A CENTRIFUGAL PUMP AND CENTRIFUGAL PUMP

Номер: US20160025100A1
Автор: Rodrigues Arnaldo
Принадлежит:

An impeller for a centrifugal pump has at least one vane which has a lower side concavely curved in at least one part region and which has at least one kink line in at least one part region. The kink line extends at least substantially along a main direction of extent of the at least one vane. The vane is open in a V shape along the kink line in at least one part region in the direction of a surface normal of the lower side. 1. An impeller for a centrifugal pump , comprisingat least one vane having a lower side concavely curved in at least one part region and having at least one kink line in the at least one part region, the kink line extending at least substantially along a main direction of an extent of the at least one vane, the vane being open in a V shape along the kink line in at least one part region in the direction of a surface normal of the lower side.2. An impeller in accordance with claim 1 , whereinthe at least one vane has at the lower side an opening angle which is spanned by the kink line and which is less than 180 degrees in the at least one part region.3. An impeller in accordance with claim 2 , whereinthe opening angle has in the at least one part region a bisectrix lying at least substantially in a plane oriented perpendicular to an axis of rotation.4. An impeller in accordance with claim 3 , whereinthe bisectrix and the kink line span the plane oriented perpendicular to the axis of rotation.5. An impeller in accordance with claim 1 , whereinthe lower side of the vane has at least two part surfaces arranged on oppositely disposed sides of the kink line and which include a respective acute angle at the kink line with a plane perpendicular to an axis of rotation.6. An impeller in accordance with claim 5 , whereinthe angles between the plane perpendicular to the axis of rotation and the part surfaces are each less than 80 degrees.7. An impeller in accordance with claim 5 , whereinthe part surfaces have an at least a substantially planar ...

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Номер записи: 26
26-01-2017 дата публикации

CENTRIFUGAL FAN

Номер: US20170023001A1
Автор: CHOI Woojoo, Chung Choonmyun, IM Dongkyun, Yang Taeman
Принадлежит:

Disclosed herein is a centrifugal fan. The centrifugal fan includes a back plate having a central portion for coupling with a rotation center shaft, a plurality of blades extending from the back plate, and a shroud which is connected to end portions of the blades and has an introduction end portion and a discharge end portion through which fluid passes, and the discharge end portion is rounded with a predetermined curvature in a direction away from the back plate. 1. A centrifugal fan comprising:a back plate having a central portion for coupling with a rotation center shaft;a plurality of blades extending from the back plate; anda shroud having a circular ring shape and connected to end portions of the blades, wherein the shroud comprises:an introduction end portion through which fluid is introduced;a connection portion curved to have a diameter that gradually increases from the introduction end portion; anda discharge end portion through which the fluid is discharged via the connection portion, andwherein the discharge end portion is rounded in a direction away from the back plate.2. The centrifugal fan according to claim 1 , wherein the discharge end portion has a larger curvature than the connection portion.3. The centrifugal fan according to claim 2 , wherein the curvature of the discharge end portion is equal to or more than a single arc (1arc).4. The centrifugal fan according to claim 1 , wherein the back plate comprises a connection portion which extends in a radial direction of the back plate from the central portion and connects the central portion to a circumferential portion claim 1 , and the circumferential portion is rounded in a direction away from the discharge end portion of the shroud.5. The centrifugal fan according to claim 4 , wherein a distance between the discharge end portion of the shroud and the circumferential portion of the back plate is gradually increased in a discharge direction of the fluid.6. The centrifugal fan according to claim 4 , ...

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Номер записи: 27
24-01-2019 дата публикации

FAN WHEEL, FAN, AND SYSTEM HAVING AT LEAST ONE FAN

Номер: US20190024674A1
Автор: HOFMANN Georg, HUB Sandra, LOERCHER Frieder
Принадлежит: ZIEHL-ABEGG SE

A fan wheel for a fan is equipped with at least two fan blades with a wavy design. A fan has at least one such fan wheel. A system has at least one fan with such a fan wheel. 1. A fan wheel for a fan with at least two fan blades with wavy design.2. The fan wheel according to claim 1 , characterized by the fact that the surface of the fan blade is not claim 1 , or is hardly claim 1 , wavy in a random planar profile extending over the span claim 1 , meaning the waviness essentially refers to the blade leading edge and blade trailing edge.3. The fan wheel according to claim 1 , characterized by the fact that the surfaces of the fan blades reveal waviness seen in at least one planar profile extending over the span which preferably extends over the entire fan blade.4. The fan wheel according to claim 1 , characterized by the fact that the waviness runs in an approximately sinus shape claim 1 , with instances of waviness with lengths preferably with amplitudes in the region of 3 mm to 50 mm and/or between 0.5 and 5% of the maximum fan wheel diameter and with instances of waviness with angles preferably with amplitudes in the region of 0.3° to 3°.5. The fan wheel according to claim 1 , characterized by the fact that no cover ring is present and the outermost area of the fan blade (the free end) ends with negative sickling and possibly a V position.6. The fan wheel according to claim 1 , characterized by the fact that the inner and/or outer area of the fan blade (an end secured to the hub ring or cover ring respectively) is at an angle of 75° to 105° claim 1 , preferably of approximately 90° claim 1 , to the hub ring claim 1 , whereby the corresponding angle with the non-wavy reference blade is considerably more acute or obtuse claim 1 , that is to say is not within the range stated.7. The fan wheel according to claim 1 , characterized by the fact that the fan blade is produced from sheet material (metal or plastic).8. The fan wheel according to claim 1 , characterized by ...

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Номер записи: 28
29-01-2015 дата публикации

FAN BLADE STRUCTURE AND CENTRIFUGAL FAN USING THE SAME

Номер: US20150030441A1
Автор: HUANG Sung-Chuan, KUAN Ta-Ching, LAI Yi-Chi, Wu Ming-Hsiu
Принадлежит: ASUSTEK COMPUTER INC.

A fan blade structure applied to a centrifugal fan is provided. The fan blade structure includes a wheel hub and an annular vane. The wheel hub includes a plurality of connecting brackets, and the annular vane includes multiple crests and troughs which interlace to form a continuous curved surface. The continuous curved surface has an outer ring surface and an inner ring surface. The connecting brackets are connected to the inner ring surface and drive the annular vane to rotate. 1. A fan blade structure applied to a centrifugal fan , the fan blade structure comprising:a wheel hub including a plurality of connecting brackets; andan annular vane including multiple crests and troughs, wherein the crests and the troughs interlace to form a continuous curved surface, the continuous curved surface includes an outer ring surface and an inner ring surface, and the connecting brackets are connected to the inner ring surface and drive the annular vane to rotate.2. The fan blade structure according to claim 1 , wherein the continuous curved surface of the annular vane is a wave curved surface.3. The fan blade structure according to claim 1 , wherein the continuous curved surface of the annular vane presents a periodical or non-periodical change.4. The fan blade structure according to claim 1 , wherein the wheel hub claim 1 , the annular vane and the connecting brackets are integrated to form a single component.5. A centrifugal fan claim 1 , comprising:a fan blade structure including a wheel hub and an annular vane, wherein the wheel hub includes a plurality of connecting brackets, the annular vane includes multiple crests and troughs, the crests and the troughs interlace to form a continuous curved surface, the continuous curved surface includes an outer ring surface and an inner ring surface, and the connecting brackets are connected to the inner ring surface;a motor disposed in the wheel hub of the fan blade structure and driving the wheel hub of the fan blade structure to ...

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Номер записи: 29
29-01-2015 дата публикации

TURBO FAN AND AIR CONDITIONING APPARATUS

Номер: US20150030454A1
Автор: Ikeda Takashi, Kurihara Makoto, Tadokoro Takahide, Takagi Masahiko
Принадлежит: Mitsubishi Electric Corporation

A turbo fan blade front edge has, between a main-plate-side blade front edge and a shroud-side blade front edge, a projecting blade front edge that distances from a blade rear edge (located in a rotation direction A) as it becomes further away from a main plate, which curves to a position away from a rotation center. In a range close to the main plate, a main-plate-side front-edge skirt portion distances from the blade rear edge and inclines away from the rotation center as it becomes closer to the main plate. A main-plate-side blade rear edge, close to the main plate of the blade rear edge, is substantially perpendicular to the main plate and a shroud-side blade rear edge, close to a shroud, is inclined so as to gradually distance away from the blade front edge (behind in the rotation direction A) as it becomes further away from the main plate. 1. (canceled)2. A turbo fan comprising:a disk-shaped main plate provided with a rotation center at a center thereof and a projecting boss formed in a vicinity of the rotation center;a cylindrical shroud arranged opposite to the main plate and provided with a diameter expanded portion configured to have an inner diameter increasing with decrease in distance to the main plate; anda plurality of blades, with one end and the other end being joined to the main plate and the shroud, respectively, whereineach blade includes a blade front edge and a blade rear edge, andthe blade front edge of each blade is located closer to the rotation center than the blade rear edge of the blade, and farther in a direction of rotation of the turbo fan than the blade rear edge, whereina blade outer face, which is a face away from the rotation center of the blade, is formed on a projecting face projecting in a direction away from the rotation center, wherein a main-plate-side blade front edge close to the main plate,', 'a shroud-side blade front edge close to the shroud, and', 'a projecting blade front edge formed between the main-plate-side blade ...

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Номер записи: 30
04-02-2016 дата публикации

ELECTRIC BLOWER

Номер: US20160032938A1
Автор: HAYAMITSU Ryosuke
Принадлежит:

An electric blower includes a centrifugal impeller, a diffuser including stationary vanes on a discharge side of the centrifugal impeller, a motor configured to drive the centrifugal impeller, a fan case configured to cover the centrifugal impeller and the diffuser, a housing case joined to the fan case, and return guide vanes that guide air which has been guided by the stationary vanes to an inner surface of the fan case radially inward through a space under the diffuser. The housing case includes an annular lower plate portion located axially below the diffuser. Each return guide vane is continuous with an upper surface of the annular lower plate portion. An upper end of each return guide vane is located axially opposite to the diffuser. 1. An electric blower comprising:a centrifugal impeller configured to rotate about a central axis extending in a vertical direction;a diffuser including a plurality of stationary vanes located on a discharge side of the centrifugal impeller;a motor configured to drive the centrifugal impeller;a fan case configured to cover the centrifugal impeller and the diffuser, and including an inlet port located axially opposite to a central portion of an upper surface of the centrifugal impeller;a housing case located radially outside of the motor, and joined to the fan case; anda plurality of return guide vanes each of which is configured to guide air which has been guided by each of the plurality of stationary vanes of the diffuser to an inner surface of the fan case radially inward through a space under the diffuser; whereinthe housing case includes an annular lower plate portion located axially below the diffuser;each of the plurality of return guide vanes is continuous with an upper surface of the annular lower plate portion; andan upper end of each of the plurality of return guide vanes is located axially opposite to the diffuser.2. The electric blower according to claim 1 , wherein an inner circumferential portion of each of the ...

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Номер записи: 31
01-02-2018 дата публикации

VENTILATOR WHEEL AND VENTILATOR

Номер: US20180030994A1
Автор: GEBERT Daniel, Konzal Alexander, Mueller Jens, STREHLE Michael
Принадлежит:

The invention relates to a ventilator wheel which is produced in the form of a radial or a diagonal ventilator wheel, and comprises a bottom disc and a plurality of ventilator blades arranged, on said bottom disc, so as to be distributed about an axial rotational axis, said bottom disc comprising a circumferential radial outer edge section that, when viewed in cross-section, extends in a curved shape in at least some sections and thus forms an elliptical transition of said bottom disc from a radial extension into an axial extension. 1. A ventilator wheel designed as a radial ventilator wheel or diagonal ventilator wheel , with a bottom disk and a plurality of ventilator blades arranged and distributed about an axial axis of rotation on the bottom disk , whose axial height dimension runs between an intake side and the bottom disk , wherein the bottom disk has a circumferential radial outer rim section which runs at least for a portion as a curved shape , looking in the cross section , and thereby forms an elliptical transition of the bottom disk from a radial extension to an axial extension , the ventilator blades having a radial outer edge , each forming a transition point on a side with the bottom disk , and an imaginary ring joining the transition points in the circumferential direction forms a boundary line to which the elliptical transition of the bottom disk is adjacent immediately or with a spacing in the radial direction.2. The ventilator wheel according to claim 1 , wherein the elliptical transition in the circumferential radial outer rim section of the bottom disk has a half-axis length ratio (a)/(b) in a range of 1 to 10 claim 1 , especially 2 to 5 claim 1 , where (a) corresponds to a half-axis length in the radial direction and (b) to a half-axis length in the axial direction of the ventilator wheel.3. The ventilator wheel according to claim 1 , wherein an axial prolongation is formed in the axial direction on the elliptical transition as a single piece.4 ...

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Номер записи: 32
05-02-2015 дата публикации

Gas Transfer Vacuum Pump

Номер: US20150037137A1
Автор: Dowdeswell Stephen, Schofield Nigel Paul, Stones Ian David
Принадлежит:

An improved vacuum pump mechanism is described in which an intersecting solid or perforated element is arranged to intersect a channel member. Relative movement of the intersecting solid or perforated element and channel member causes gas molecules to be urged from inlet to an outlet of the pump. Gas molecules are constrained within the channel member and interaction of the gas molecules with the flat and smooth surfaces of the intersecting solid or perforated member influence momentum of the gas molecules so that they are directed towards the outlet. In one embodiment, the channel member is formed as a helix and the intersecting solid or perforated elements are disk-shaped. An alternative embodiment is provided having the channel member configured as a spiral and the perforated elements as cylindrical skirts. The pump provides significant improvements in pump capacity, reduced power consumption and size of pump. 1. A vacuum pump having a mechanism comprising;a intersecting element arranged to intersect a channel formed on a surface of a channel member, said channel being arranged to guide gas molecules from an inlet of the pump towards an outlet, whereinthe intersecting element and channel member are arranged to move relative to one another so that, during use, gas molecules are urged along the channel towards the outlet, said intersecting element being arranged to allow gas molecules to pass through or around it, and the intersecting element has upstream and downstream surfaces arranged to interact with gas molecules and said surfaces are in the plane of the intersecting element and are free of protrusions.2. The vacuum pump according to claim 1 , wherein the channel member comprises a slot claim 1 , disposed in a wall of the channel claim 1 , arranged to accommodate the intersecting element at a point where the intersecting element intersects the channel.3. The vacuum pump according to claim 2 , wherein the intersecting element is perforated and the slot extends ...

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Номер записи: 33
04-02-2021 дата публикации

HIGH-AIRFLOW BLOWER FAN INCLUDING NON-EQUIDISTANT BLADES

Номер: US20210033102A1
Автор: Sung Yeol Gyu
Принадлежит:

A high-airflow blower fan including an impeller having a mounting hole in which a driving motor is mounted, and a pair of blades repeatedly disposed on an upper surface and a lower surface of the impeller at a first interval along a radial direction, wherein the pair of blades includes a first blade configured to extend with a curvature in an inner direction from an outer circumference of the impeller, and a second blade disposed to be spaced apart from the first blade at a second interval in a clockwise direction or in a counterclockwise direction and configured to extend relatively smaller than a radial length of the first blade in an inner radial direction from the outer surface of the impeller. 1. A high-airflow blower fan including non-equidistant blades , which is rotated by an impeller and a driving motor for driving the impeller to form an airflow , the high-airflow blower fan comprising:an impeller having a mounting hole in which a driving motor is mounted; and a first blade configured to extend with a curvature in an inner direction from an outer circumference of the impeller; and', 'a second blade disposed to be spaced apart from the first blade at a second interval in a clockwise direction or in a counterclockwise direction and configured to extend relatively smaller than a radial length of the first blade in an inner radial direction from the outer surface of the impeller,, 'a pair of blades repeatedly disposed on an upper surface and a lower surface of the impeller at a first interval along a radial direction, the pair of blades comprisingwherein when the pair of blades is arranged in plural at the impeller along the radial direction, the first interval is formed greater than the second interval.2. The high-airflow blower fan including non-equidistant blades of claim 1 , wherein when the second blade extends from the outer circumference of the impeller to an inner circumference thereof claim 1 , the second blade extends in the inner direction within ...

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Номер записи: 34
11-02-2016 дата публикации

FAN

Номер: US20160040683A1
Автор: Chretien Ludovic Andre, Cocks Rachele Barbara, Marks Michael Allen, Stauffer Zachary Joseph, Warriner Lisa Marie, Westhoff Joshua James
Принадлежит:

A centrifugal fan is described. The fan uses a blade that is tapered across the span of the blade. The taper can be larger towards the end opposite of the inlet or larger at the inlet. The blade may be backwardly inclined and/or curved. The fan may also include a turning vane. 1. A centrifugal fan , having an inlet and an outlet , said fan comprising:a blade, said blade being tapered in the radial direction of the blade.2. The fan of claim 1 , wherein the taper of said blade is larger towards one of the inlet and the end opposite the inlet.3. The fan of claim 1 , further comprising a turning vane.4. The fan of claim 3 , wherein said turning vane is adapted to separate air as it enters into the blades.5. A fan defining an axis of rotation thereof and an air flow direction claim 3 , said fan comprising a plurality of blades claim 3 , at least one of said plurality of blades having a length along a direction parallel to an axis of fan rotation claim 3 , at least one of said plurality of blades having a width transverse to its length claim 3 , the width of the said one of said at least one of the blades being progressively increasing in width in a direction parallel to the axis of fan rotation and in the direction opposed to the air flow direction.6. The fan of :further defining an internal air flow passage thereof; andfurther comprising an element positioned in said internal air flow passage of the fan.7. The fan of claim 6 , wherein said element comprises a turning vane.8. The fan of claim 7 , wherein said turning vane includes a smoothly-rounded entry nose and a thin extended trailing edge.9. The fan of : 'wherein said turning vane includes a circular ring internally mounted to the internal periphery of the blades.', 'wherein said blades define an internal periphery of said blades; and'}10. The fan of claim 7 , further comprising a second turning vane spaced from said first mentioned turning vane.11. The fan of claim 10 , wherein said first mentioned turning vane and ...

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Номер записи: 35
09-02-2017 дата публикации

IMPELLER AND ROTATING MACHINE PROVIDED WITH SAME

Номер: US20170037866A1
Автор: IWAMOTO Shinji, SAITO Ryosuke
Принадлежит:

An impeller comprises a disc that rotates about an axis, and blades a plurality of which are disposed in the circumferential direction of the disc with intervals therebetween. Of the angles formed by a tangent line to a projection curve line which is a center curve line of the thickness of the blade projected from the axis direction to the disc, and an imaginary line orthogonal to a line connecting the axis and a tangent point between the projection curve line and the tangent line, if the angle formed at the rotation direction rear-side and the outer peripheral side of the disc is defined as a blade angle, then the blade angle of the blade has a prescribed gradual increase region and gradual decrease region from the center towards the outside, and at the center of an inflection region of the gradual increase region and of the gradual decrease region, provided is a partial gradual decrease region having a smaller blade angle decrease amount than the blade angle increase amount of the gradual increase region. 15.-. (canceled)6. An impeller comprising:a disc that is supported by a rotating shaft and rotates about an axis of the rotating shaft; anda plurality of blades that are provided to lie substantially in a radial direction on the disc,wherein a flow passage is formed between the blades, and a fluid is delivered radially outward from a rotation center along each of the blades by the rotation of the disc,wherein, in a case where an angle formed on a backward side in a rotational direction of the disc and an outer peripheral side of the disc among angles formed between a tangent line to a projection curve line obtained by projecting a center curve line of the thickness of the blade onto the disc from the direction of the axis of the rotating shaft and an imaginary line orthogonal to a straight line connecting a tangent point between the projection curve line and the tangent line is defined as a blade angle,the blade angle of the blade has a predetermined gradual ...

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Номер записи: 36
09-02-2017 дата публикации

Fan for ovens for cooking foods

Номер: US20170038080A1
Автор: Enrico MARTINI, Oscar Martini
Принадлежит: MATIKA Srl, MaTlKa Srl

Fan for ovens for cooking foods, which comprises: a support plate arranged substantially orthogonal to the rotation axis of the fan; and multiple blades projectingly fixed on the support plate and radially arranged around the rotation axis. Each blade of the fan is provided with an internal edge, which is shaped with a convex portion that is projectingly extended between a first and a second concavity of the internal edge itself.

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Номер записи: 37
08-02-2018 дата публикации

Turbofan and air-conditioning apparatus

Номер: US20180038379A1
Автор: Kazuki ISOMURA, Makoto Kurihara
Принадлежит: Mitsubishi Electric Corp

Provided is a turbofan producing reduced noise and easily manufactured. A coupling portion between a blade main portion and a blade cover is formed in a surface region (pressure surface) parallel to a direction of air flowing over the pressure surface of each blade. With this configuration, the air sucked from a direction of a rotation axis of a turbofan is less liable to enter a gap of the coupling portion of the blade, thereby being capable of reducing noise. Further, noise is reduced so that high-precision dimensional control of the gap of the coupling portion of the blade is not required. Consequently, dimensional control at the time of manufacture is facilitated to thereby facilitate manufacture.

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Номер записи: 38
07-02-2019 дата публикации

Centrifugal Impeller and Centrifugal Blower

Номер: US20190040874A1
Автор: Fang Chuan Hui, GUO Chuan Jiang, Liu Feng, PAN Gang, PAN Ji Cheng, SONG Yong Qiang, Xue Feng
Принадлежит:

A centrifugal blower includes an electric motor, a centrifugal impeller driven by the motor, a diffuser mounted to the motor and disposed between the motor and the centrifugal impeller, and a casing mounted to the diffuser. The centrifugal impeller is received in a chamber defined by the diffuser and the casing. the casing defines an opening facing the inlet of the centrifugal impeller. The diffuser has a plurality of passage walls, and a plurality of diffusing passages, each bounded by neighboring passage walls. The diffuser further has at least one mounting portion connected to one of the passage walls. A cross section of each of the diffusing passages is increased form an outer end to an inner end thereof and no throat is formed in each of the diffusing passages. 1. A centrifugal blower comprising:an electric motor;a centrifugal impeller driven by the motor;a diffuser mounted to the motor and disposed between the motor and the centrifugal impeller; anda casing mounted to the diffuser, the centrifugal impeller being received in a chamber defined by the diffuser and the casing, the casing having an opening facing the inlet of the centrifugal impeller;wherein the diffuser has a plurality of passage walls, and a plurality of diffusing passages, each bounded by neighboring passage walls, the diffuser further has at least one mounting portion connected to one of the passage walls, a cross section of each of the diffusing passages is increased form an outer end to an inner end thereof and no throat is formed in each of the diffusing passages.2. The centrifugal blower of claim 1 , wherein said at least one mounting portion is connected to an inner ends of the corresponding one of the passage walls claim 1 , each of said at least one mounting portion comprises a cylindrical surface protrudes towards the center of the diffuser.3. The centrifugal blower of claim 2 , wherein the cylindrical surface is connected to the corresponding one of the passage walls with a smooth ...

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Номер записи: 39
06-02-2020 дата публикации

Blower wheel

Номер: US20200040904A1
Автор: Alexander Konzal, Erhard Gruber, Jens Müller
Принадлежит: Ebm Papst Mulfingen GmbH and Co KG

A blower wheel having a plurality of blower wheel blades arranged in a blade ring, which are connected to a disc covering the blower wheel blades, at least in sections, on at least one axial side, wherein a connection between the blower wheel blades and the disc determines a transition geometry, which has a rounded curve of a quadratic function when viewed in the cross-section, at least on one side of the blower wheel blades, particularly a side facing radially inward with respect to an axis of rotation of the blower wheel.

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Номер записи: 40
15-02-2018 дата публикации

IMPELLER FOR CENTRIFUGAL PUMPS

Номер: US20180045213A1
Автор: BALBO Fabio, GROPPO Renato, Kuroiwa So, MATTEAZZI Mariano, OBUCHI Masashi, SAKIHAMA Dai
Принадлежит: EBARA CORPORATION

An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft. The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust. 1. An impeller for centrifugal pumps comprising a first disk element , functionally arranged toward the inlet , which is coaxial to and faces a second disk element , which is functionally arranged toward the delivery; said second disk element being connected rigidly to said first disk element by angularly spaced vanes and being centrally provided with a fastening means for fastening to a transmission shaft; said impeller being characterized in that it comprises openings formed in the substantially peripheral region of said second disk element , between pairs of adjacent vanes , substantially at the areas subjected to the greatest axial thrust.2. The impeller according to claim 1 , characterized in that the radially peripheral side of each of said openings extends at a distance that is shorter than that of the peripheral edge of said second disk element claim 1 , with respect to the rotation axis of said impeller.3. The impeller according to claim 1 , characterized in that said openings are constituted by contoured slots that are formed in the substantially peripheral region of said second disk element claim 1 , between pairs of adjacent vanes; the radially peripheral side of each of said contoured slots having an arc-like profile with a convexity facing said rotation axis.4. The impeller according to claim 3 , characterized ...

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Номер записи: 41
03-03-2022 дата публикации

Refrigeration system mixed-flow compressor

Номер: US20220065256A1
Автор: Michael M. JOLY, Vishnu Sishtla, William T. COUSINS
Принадлежит: Carrier Corp

A compressor includes a housing, a first compression stage defined within the housing, a second compression stage defined within the housing, and a motor disposed between the first compression stage and the second compression stage relative to a flow of fluid through the compressor. The first compression component of the first compression stage has a mixed-flow configuration and the second compression component of the second compression stage has a radial-flow configuration.

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Номер записи: 42
08-05-2014 дата публикации

CENTRIFUGAL FAN IMPELLER STRUCTURE

Номер: US20140127024A1
Автор: Lee Sheng-Pei, YANG Chih-Wei
Принадлежит: ASIA VITAL COMPONENTS CO., LTD.

A centrifugal fan impeller structure includes a hub and a blade body set. The hub has an extension section. The blade body set has multiple blade bodies. The blade bodies outward extend from the extension section of the hub. Each two adjacent blade bodies define therebetween a flow way, an air outlet and an air inlet. The air outlet and the air inlet are respectively positioned at two ends of the flow way in communication with the flow way. The air outlets are arranged at unequal intervals so as to greatly reduce noise in operation. 1. A centrifugal fan impeller structure comprising:a hub having an extension section; anda blade body set having multiple blade bodies, the blade bodies outward extending from the extension section of the hub, each two adjacent blade bodies defining therebetween a flow way, an air outlet and an air inlet, the air outlet and the air inlet being respectively positioned at two ends of the flow way in communication with the flow way, the air outlets being arranged at unequal intervals.2. The centrifugal fan impeller structure as claimed in claim 1 , wherein each blade body has a first end and a second end claim 1 , the air inlet being defined between the first ends of each two adjacent blade bodies claim 1 , the air outlet being defined between the second ends of each two adjacent blade bodies.3. The centrifugal fan impeller structure as claimed in claim 2 , wherein the second ends have unequal widths.4. The centrifugal fan impeller structure as claimed in claim 2 , wherein the first ends together define a first pitch circle claim 2 , a tangent of the first pitch circle at the first end being defined as a first tangent claim 2 , the blade body having a blade central line claim 2 , a tangent of the blade body central line at the first end being defined as a second tangent claim 2 , the second tangent intersecting the first tangent to contain an air incoming angle.5. The centrifugal fan impeller structure as claimed in claim 2 , wherein the ...

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Номер записи: 43
08-05-2014 дата публикации

CENTRIFUGAL FAN IMPELLER STRUCTURE

Номер: US20140127029A1
Автор: Lee Sheng-Pei, YANG Chih-Wei
Принадлежит: ASIA VITAL COMPONENTS CO., LTD.

A centrifugal fan impeller structure includes a hub having multiple blades. The blades extend from a circumference of the hub in a direction away from the hub. Each two adjacent blades define therebetween a flow way, an air outlet and an air inlet. The air outlet and the air inlet are respectively positioned at two ends of the flow way in communication with the flow way. The air outlets are arranged at unequal intervals so as to greatly reduce noise in operation. 1. A centrifugal fan impeller structure comprising:a hub having multiple blades, the blades extending from a circumference of the hub in a direction away from the hub, each two adjacent blades defining therebetween a flow way, an air outlet and an air inlet, the air outlet and the air inlet being respectively positioned at two ends of the flow way in communication with the flow way, the air outlets being arranged at unequal intervals.2. The centrifugal fan impeller structure as claimed in claim 1 , wherein each blade has a first end and a second end claim 1 , the air inlet being defined between the first ends of each two adjacent blades claim 1 , the air outlet being defined between the second ends of each two adjacent blades.3. The centrifugal fan impeller structure as claimed in claim 2 , wherein the second ends have unequal widths.4. The centrifugal fan impeller structure as claimed in claim 2 , wherein the first ends together define a first pitch circle claim 2 , a tangent of the first pitch circle at the first end being defined as a first tangent claim 2 , the blade having a blade central line claim 2 , a tangent of the blade central line at the first end being defined as a second tangent claim 2 , the second tangent intersecting the first tangent to contain an air incoming angle.5. The centrifugal fan impeller structure as claimed in claim 2 , wherein the second ends together define a second pitch circle claim 2 , a tangent of the second pitch circle at the second end being defined as a third tangent ...

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Номер записи: 44
22-02-2018 дата публикации

FAN ASSEMBLY FOR A DRYER APPLIANCE

Номер: US20180051409A1
Автор: Pollett James, Yu Zhiquan
Принадлежит:

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

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Номер записи: 45
15-05-2014 дата публикации

Centrifugal fan and air conditioner using the same

Номер: US20140133988A1
Автор: KIM Junghoon, Son Minu, SON Sangyuk
Принадлежит:

A centrifugal fan and an air conditioner using the same are provided. A gurney flap having a rectangular plate or a S-shaped, twisted gurney flap may be formed in a tip of a blade provided in or on a hub of the centrifugal fan, so that noise may be effectively reduced, and efficiency increased. Further, the blade with the gurney flap may be easily formed integrally with the hub, enhancing productivity. 1. A centrifugal fan , comprising:a hub; anda plurality of blades provided on the hub, wherein a gurney flap is formed in or at a tip of each of the plurality of blades.2. The centrifugal fan of claim 1 , wherein the gurney flap has a S-shaped claim 1 , twisted shape.3. The centrifugal fan of claim 2 , wherein an upper end of the gurney flap extends horizontally with respect to an upper end of the respective blade claim 2 , and a lower end of the gurney flap extends perpendicular to a lower end of the respective blade.4. The centrifugal fan of claim 2 , wherein an upper end of the gurney flap is formed at approximately 180 degrees with respect to an upper end of the respective blade claim 2 , and a lower end of the gurney flap formed at approximately 90 degrees with respect to a lower end of the respective blade.5. The centrifugal fan of claim 1 , wherein the gurney flap is a rectangular plate and forms a predetermined angle with respect to a plane of the respective blade.6. The centrifugal fan of claim 5 , wherein the predetermined angle is any one of approximately 90 degrees claim 5 , approximately 135 degrees claim 5 , or approximately 150 degrees.7. The centrifugal fan of claim 6 , wherein the predetermined angle is approximately 135 degrees.8. The centrifugal fan of claim 1 , wherein a horizontal length of the gurney flap is not more than approximately 2% of a horizontal length of the respective blade.9. The centrifugal fan of claim 1 , wherein the hub is integrally formed by injection molding with the plurality of blades each having the gurney flap.10. The ...

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Номер записи: 46
15-05-2014 дата публикации

Impeller and electric blower having the same

Номер: US20140134012A1
Автор: Yong Wan CHO
Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is an impeller including: an upper surface, which is an air inlet portion; a lower surface, which is an air outlet portion; and blades formed between the upper and lower surfaces, wherein the upper and lower surfaces are provided with guide grooves for balancing of a motor.

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Номер записи: 47
01-03-2018 дата публикации

IMPELLER AND CENTRIFUGAL COMPRESSOR

Номер: US20180058468A1
Автор: Chiba Kazuki, Masutani Jo, YAGI Nobuyori, Yanagisawa Shin
Принадлежит:

An impeller includes a disk formed in a disk shape about an axis, and a plurality of blades provided at intervals in a circumferential direction on one side in the axial direction of the disk. The blades define a flow path extending from one side in the axial direction toward a radial outer side and include a low-rigidity region and a high-rigidity region. The low-rigidity region has an inlet, an outlet of the extending region of the flow path, a relatively small plate thickness, and has a relatively small inclination angle with respect to the disk. The high-rigidity region adjacent to the low-rigidity region has a relatively large plate thickness, and a relatively large inclination angle with respect to the disk. 1. An impeller comprising:a disk formed in a disk shape about an axis; anda plurality of blades provided at intervals in a circumferential direction on one side in the axial direction of the disk and that defines a flow path extending from one side in the axial direction toward a radial outer side, wherein a low-rigidity region that includes at least one of an inlet and an outlet of the extending region of the flow path, has a relatively small plate thickness, and has a relatively small inclination angle with respect to the disk; and', 'a high-rigidity region adjacent to the low-rigidity region, having a relatively large plate thickness, and having a relatively large inclination angle with respect to the disk., 'the blades include2. The impeller according to claim 1 , wherein the high-rigidity region is a central portion between the inlet and the outlet in the extending region of the flow path.3. The impeller according to claim 1 , wherein:curvature in a radial direction of the axis is relatively small in the low-rigidity region, andcurvature in the radial direction of the axis is relatively large in the high-rigidity region.4. The impeller according to claim 1 , further comprising a cover that covers the plurality of blades from one side in the axial ...

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Номер записи: 48
05-03-2015 дата публикации

Scroll tongue part and rotary machine including the same

Номер: US20150063994A1
Автор: Bong Gun Shin, Jin Soo Lee, Jong Jae CHO, Seung Hoon Lee, Sung Chul AHN
Принадлежит: Samsung Techwin Co Ltd

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

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Номер записи: 49
28-02-2019 дата публикации

HEAT DISSIPATION BLADE AND HEAT DISSIPATION FAN

Номер: US20190063451A1
Автор: Cheng Cheng-Yu, Hsieh Cheng-Wen, Ke Jau-Han, LIAO Wen-Neng, Yu Shun-Ta
Принадлежит: ACER INCORPORATED

A heat dissipation fan including a hub and a plurality of heat dissipation blades is provided. The heat dissipation blades are arranged around the periphery of the hub. Each of the heat dissipation blades includes a curved surface body and a flow guiding portion. The curved surface body has a pressure bearing surface and a negative pressing surface opposite to the pressure bearing surface. The flow guiding portion is connected to the curved surface body. The flow guiding portion has a concave surface and a convex surface opposite to the concave surface, wherein the concave surface is recessed in the pressure bearing surface and the convex surface protrudes outward from the negative pressing surface. 1. A heat dissipation blade , adapted to be fixed to a hub , wherein the heat dissipation blade comprises:a curved surface body, having a pressure bearing surface and a negative pressing surface opposite to the pressure bearing surface; anda flow guiding portion, connected to the curved surface body, wherein the flow guiding portion has a concave surface and a convex surface opposite to the concave surface, the concave surface is recessed in the pressure bearing surface, and the convex surface protrudes outward from the negative pressing surface.2. The heat dissipation blade as claimed in claim 1 , wherein the curved surface body further has a combining end and a flow guiding end opposite to the combining end claim 1 , the combining end is fixed to the hub claim 1 , and the flow guiding portion is disposed to be adjacent to an end edge of the flow guiding end.3. The heat dissipation blade as claimed in claim 1 , wherein the curved surface body and the flow guiding portion are an integrally formed sheet metal component claim 1 , and the flow guiding portion is formed at the curved surface body by punching.4. The heat dissipation blade as claimed in claim 1 , wherein the concave surface comprises a concave curved surface.5. The heat dissipation blade as claimed in claim 4 ...

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Номер записи: 50
28-02-2019 дата публикации

COOLING FAN STRUCTURE WITH ROTATIONAL CYLINDRICAL FAN BLADES

Номер: US20190063454A1
Автор: Chang Bor-Haw, Wang Chung-Shu
Принадлежит:

A cooling fan structure with rotational cylindrical fan vanes includes a rotary body and multiple rotational cylindrical bodies. The rotary body includes a rotor assembly and a stator assembly corresponding to the rotor assembly for driving the rotor assembly to rotate. The rotor assembly includes a hub. The hub has a top section and a circumferential section. The rotational cylindrical bodies are rotatably disposed on the top section or the circumferential section of the hub. When the rotary body rotates, the rotational cylindrical bodies are driven by the rotary body to self-rotate. 1. A cooling fan structure with rotational cylindrical fan vanes , comprising:a rotary body including a rotor assembly and a stator assembly corresponding to the rotor assembly for driving the rotor assembly to rotate, the rotor assembly including a hub, the hub having a top section and a circumferential section; andmultiple rotational cylindrical bodies rotatably disposed on the top section or the circumferential section of the hub, whereby when the rotary body rotates, the rotational cylindrical bodies are driven by the rotary body to self-rotate.2. The cooling fan structure with rotational cylindrical fan vanes as claimed in claim 1 , wherein the hub includes multiple link members claim 1 , the link members being disposed on the top section or the circumferential section of the hub claim 1 , one end of each of the rotational cylindrical bodies being rotatably connected with the link member.3. The cooling fan structure with rotational cylindrical fan vanes as claimed in claim 2 , wherein the rotor assembly includes a first internal space and a second internal space claim 2 , the second internal space being annularly positioned around the first internal space claim 2 , a hub shaft being disposed in the first internal space and connected with the hub claim 2 , a case section and a magnetic member being received in the first internal space claim 2 , the magnetic member being disposed on ...

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Номер записи: 51
10-03-2016 дата публикации

Stator Disk and Vacuum Pump

Номер: US20160069350A1
Автор: Kabasawa Takashi, Nonaka Manabu
Принадлежит: EDWARDS JAPAN LIMITED

A stator disk includes a connection hole for improving exhaust efficiency in a vacuum pump including a Seigbahn type molecular pump portion, and a vacuum pump including the stator disk. The vacuum pump according to an embodiment includes a Seigbahn type molecular pump portion and includes, in a stator disk disposed therein, a connection hole that connects an upper space (an inlet port side region, an upstream side region) with a lower space (an outlet port side region, a downstream side region) in the axial direction of the stator disk. 1. A stator disk that is used in a first gas transfer mechanism for transferring gas from an inlet port side to an outlet port side and forms a spiral groove exhaust portion by interaction with a rotating disk , whereina spiral groove including a root portion and a ridge portion is formed in at least a part of opposed surfaces of the stator disk and the rotating disk, anda connection hole penetrating from the inlet port side to the outlet port side is provided in an inner circumference side portion of the stator disk.2. The stator disk according to claim 1 , wherein the connection hole is a connection hole that connects claim 1 , among the root portions claim 1 , the root portion formed on a surface of the stator disk on the inlet port side with the root portion formed on a surface of the stator disk on the outlet port side.3. The stator disk according to claim 1 , wherein an opening portion of the connection hole is formed in claim 1 , among the root portions claim 1 , the root portion of either a surface of the stator disk on the inlet port side or a surface of the stator disk on the outlet port side.4. The stator disk according to claim 1 , wherein an opening portion of the connection hole is formed across claim 1 , among the root portions claim 1 , a plurality of the root portions at an end of the outlet port side on a surface of the stator disk on the inlet port side claim 1 , or a plurality of the root portions at an end of the ...

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Номер записи: 52
27-02-2020 дата публикации

FAN BLADE STRUCTURE AND CENTRIFUGAL FAN

Номер: US20200063750A1
Автор: Yuan Mei-Hua
Принадлежит:

The present invention relates to a fan blade structure and a centrifugal fan. The centrifugal fan comprises a fan case having a first inlet and an outlet and a fan blade structure received in the fan case. The fan blade structure comprises a hub and a plurality of blades disposed at the outer edge of the hub. Each of the blades has a first portion and a second portion. 1. A fan blade structure , applied in a centrifugal fan , comprising:a hub and a plurality of blades, wherein the blades are disposed at the outer edge of the hub, wherein each of the blades has a first portion and a second portion, wherein a virtual line extends vertically between the first portion and the second portion, wherein the second portion extends outwards from one end of the first portion adjacent to the virtual line, wherein the surface area of the first portion is larger than or smaller than that of the second portion.2. The fan blade structure according to claim 1 , wherein the first portion has a top surface and a bottom surface claim 1 , wherein one end of the top surface and one end of the bottom surface are attached at the outer edge of the hub claim 1 , wherein the other end of the top surface and the other end of the bottom surface are disposed far away from the outer edge of the hub claim 1 , wherein the second portion has a first side and a second side claim 1 , wherein the first side extends obliquely and outwards from the other end of the top surface to connect to one end of the second side claim 1 , wherein the other end of the second side connects horizontally and adjacently to the other end of the bottom surface claim 1 , wherein the virtual line extends downwards and vertically from the connection between the first side and the other end of the top surface to the bottom surface correspondingly.3. The fan blade structure according to claim 1 , wherein the first portion has a top surface claim 1 , a bottom surface claim 1 , and a side surface claim 1 , wherein one end of the ...

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Номер записи: 53
27-02-2020 дата публикации

CENTRIFUGAL COMPRESSOR AND TURBOCHARGER

Номер: US20200063751A1
Автор: Hayashi Yoshihiro, Iwakiri Kenichiro
Принадлежит: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

A centrifugal compressor includes an impeller including a hub and a plurality of blades disposed on an outer peripheral surface of the hub at intervals in a circumferential direction, and a casing accommodating the impeller and defining an inlet passage for introducing air along an axial direction of the impeller. An inner peripheral surface of the inlet passage includes a narrowed portion, and an inclined portion connected to a downstream side of the narrowed portion and having a radial distance from a rotational axis of the impeller gradually increasing toward the vicinity of tips of leading edges of the blades. Further, 0.01R1≤σ≤0.1R1 is satisfied, where R1 is radial distance between a downstream end of the inclined portion and the rotational axis, R2 is radial distance between a downstream end of the narrowed portion and the rotational axis, and σ is constriction amount which is a difference between R1 and R2. 1. A centrifugal compressor comprising:an impeller including a hub and a plurality of blades disposed on an outer peripheral surface of the hub at intervals in a circumferential direction; anda casing accommodating the impeller and defining an inlet passage for introducing air to the impeller along an axial direction of the impeller therein,wherein an inner peripheral surface of the inlet passage includes a narrowed portion and an inclined portion connected to a downstream side of the narrowed portion, a distance between the inclined portion and a rotational axis of the impeller in a radial direction gradually increasing toward a vicinity of tips of leading edges of the blades, andwherein 0.01R1≤σ≤0.1R1 is satisfied, where R1 is a distance between a downstream end of the inclined portion and the rotational axis of the impeller in the radial direction, R2 is a distance between a downstream end of the narrowed portion and the rotational axis of the impeller in the radial direction, and σ is a constriction amount which is a difference between R1 and R2.2. The ...

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Номер записи: 54
11-03-2021 дата публикации

IMPELLER FOR A LIQUID PUMP

Номер: US20210071680A1
Автор: Rarick Gregory S.
Принадлежит:

A centrifugal pump impeller is providing that has vanes of a configuration that enhances pumping efficiency. The impeller has a base with a connector boss located at a center of rotation and a plurality of vanes extending from the base in spaced relation about the boss. Each vane having a leading end edge adjacent the boss and a trailing end edge adjacent an outer periphery of the base. Each of the trailing end edges being disposed parallel to an axis of rotation of the base, and each of the leading end edges being inclined forwardly at an angle relative to an operative rotational direction of the impeller and being spaced from the boss. For each vane, the leading end edge thereof is disposed at an acute angle relative to the trailing end edge thereof. 1. An impeller for a liquid pump , comprising:a base with a connector boss located at a center of rotation of the impeller; anda plurality of vanes extending from the base in spaced relation about the boss, each vane having a leading end edge adjacent the boss and a trailing end edge adjacent an outer periphery of the base;each of said trailing end edges being disposed parallel to an axis of rotation of the base, and each of said leading end edges being inclined forwardly at an angle relative to an operative rotational direction of the impeller and being spaced from the boss.2. The impeller according to claim 1 , wherein claim 1 , for each of the vanes claim 1 , the leading end edge thereof is disposed at an acute angle relative to the trailing end edge thereof.3. The impeller according to claim 2 , wherein the acute angle is 30°.4. The impeller according to claim 2 , wherein each vane has a predetermined camber length between the leading end edge and the trailing end edge claim 2 , each vane has a proceeding surface and a receding surface along the camber length claim 2 , and each vane has a thickness between the proceeding surface and receding surface that varies along the camber length.5. The impeller according to ...

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Номер записи: 55
11-03-2021 дата публикации

CENTRIFUGAL FAN

Номер: US20210071682A1
Автор: Chang Shun-Chen, Chen Chih-Chung, Hsu Kuo-Tung, Lee Shao-Ning, YANG Chao-Fu
Принадлежит:

A centrifugal fan is provided and includes an impeller, a motor, a first case and a second case. The motor is connected with the impeller to drive the impeller to rotate. The first case and the second case are assembled to form an accommodation space for accommodating the impeller and the motor. The first case includes a first side, a first guiding wall, a flow inlet and a flow outlet. The flow inlet is disposed on the first side, the first guiding wall is connected with the first side, and the flow outlet and the flow inlet are located at a same side of the centrifugal fan. The second case includes a second side and a second guiding wall connected with the second side. The first guiding wall and the second guiding wall are assembled to form a flow guiding channel, which has cross-sectional areas with different sizes. 1. A centrifugal fan comprising:an impeller;a motor connected with the impeller and configured to drive the impeller to rotate; anda first case and a second case, wherein the first case comprises a first side, a first guiding wall, a flow inlet and a flow outlet, and the second case comprises a second side and a second guiding wall, wherein the first side and the second side are opposite to each other, and assembled with each other through the first guiding wall and the second guiding wall to form an accommodation space and a flow guiding channel, wherein the first guiding wall and the second guiding wall spatially correspond to each other and respectively include a guiding portion configured together to form the guiding channel, wherein the flow outlet and the flow inlet are located at a same side of the centrifugal fan, the flow inlet, the flow outlet and the impeller have axial lines extending in a same direction, the impeller and the motor are accommodated within the accommodation space, and the flow guiding channel is in fluid communication between the accommodation space and the flow outlet.2. The centrifugal fan according to claim 1 , wherein a ...

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Номер записи: 56
07-03-2019 дата публикации

CENTRIFUGAL FAN

Номер: US20190072112A1
Автор: CHIOU Ing-Jer, LIN HSIN-CHEN
Принадлежит:

A centrifugal fan includes a housing and an impeller. The housing includes a sidewall, and the sidewall includes a tongue portion. The impeller includes a fan hub and a plurality of blades. The fan hub is rotatably disposed in the housing, and the tongue portion has an inner contour line on a reference plane. The blades connect to the fan hub. Each one of the blades has an end surface facing the sidewall. The end surface has an outer contour line on the section of the blade. Any two adjacent blades have different outer contour lines. The outer contour line of at least one first blade of the plurality of blades is parallel to the inner contour line. The outer contour line of at least one second blade of the plurality of blades is not parallel to the inner contour line. 1. A centrifugal fan , comprising:a housing, comprising a sidewall, and the sidewall includes a tongue portion; and a fan hub, rotatably disposed in the housing, and the tongue portion having an inner contour line on a reference plane; and', 'a plurality of blades, connecting to the fan hub, each one of the blades having an end surface facing towards the sidewall, and the end surface having an outer contour line on the section of the blade,, 'an impeller, comprisingwherein any two adjacent blades have different outer contour lines, the outer contour line of at least one first blade of the plurality of blades is parallel to the inner contour line, and the outer contour line of at least one second blade of the plurality of blades is not parallel to the inner contour line.2. The centrifugal fan according to claim 1 , wherein claim 1 , when at least one of the first blades moves to lead the end surface and the reference plane to intersect claim 1 , a minimum distance exists between the end surface of the at least one blade and the inner contour line.3. The centrifugal fan according to claim 1 , wherein the fan hub is rotatably disposed in the housing along an axis claim 1 , and the outer contour line of ...

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Номер записи: 57
05-03-2020 дата публикации

Centrifugal Fan Blade Assembly and Centrifugal Fan

Номер: US20200072233A1
Автор: LI Dawei, LI Jianjian, TIAN Yasong, WU Junhong, Xiong Jun
Принадлежит:

Disclosed are a centrifugal fan blade assembly and a centrifugal fan, comprising a plurality of blades, a blade leading edge of at least some of the blades being provided with an interference groove, the interference groove extending in a width direction of the blade. By providing the interference groove extending in the width direction of the blade on the blade leading edge, when the fan blade assembly is running, the interference groove changes noise frequency, thereby preventing the blade leading edge from producing a relatively large broadband noise after being impacted by a high speed air flow, thus effectively reducing noise. 1. A centrifugal fan blade assembly , comprising a plurality of blades , wherein , a leading edge of at least some of the blades is provided with an interference groove extending in a width direction of the blade.2. The centrifugal fan blade assembly according to claim 1 , wherein claim 1 , the interference groove is a V-shaped groove.3. The centrifugal fan blade assembly according to claim 2 , wherein claim 2 , an apex angle of the V-shaped groove is α claim 2 , wherein 30°≤α≤85°.4. The centrifugal fan blade assembly according to claim 2 , wherein claim 2 , a groove depth of the V-shaped groove is h claim 2 , wherein 0 mm Подробнее

Номер записи: 58
05-03-2020 дата публикации

ASYMMETRIC DOUBLE INLET BACKWARD CURVED BLOWER

Номер: US20200072237A1
Автор: Anderson Jackie S., Bushnell Peter R.
Принадлежит:

A blower assembly includes a blower housing and a fan wheel mounted within the blower housing and being rotatable about an axis of rotation. The fan wheel includes a support disk positioned near a center of the fan wheel. A first wheel portion having a first plurality of impeller blades is positioned adjacent a first side of the support disk. A second wheel portion having a second plurality of impeller blades is positioned adjacent a second side of the support disk. The first wheel portion and the second wheel portion are asymmetrical about a plane oriented perpendicular to the axis of rotation and intersecting the support disk. 1. A blower assembly comprising:a blower housing; a support disk positioned near a center of the fan wheel;', 'a first wheel portion having a first plurality of impeller blades, the first wheel portion being positioned adjacent a first side of the support disk; and', 'a second wheel portion having a second plurality of impeller blades, the second wheel portion being positioned adjacent a second side of the support disk, wherein the first wheel portion and the second wheel portion are asymmetrical about a plane oriented perpendicular to the axis of rotation and intersecting the support disk., 'a fan wheel mounted within the blower housing and being rotatable about an axis of rotation, the fan wheel including2. The blower assembly according to claim 1 , wherein at least one of a number of impeller blades claim 1 , a blade angle claim 1 , blade height claim 1 , inlet diameter claim 1 , and chord of the first wheel portion is different than the second wheel portion.3. The blower assembly according to claim 1 , wherein a configuration of the first wheel portion is optimized for integration with a motor and a configuration of the second wheel portion is optimized for maximum fan efficiency.4. The blower assembly according to claim 3 , wherein the first plurality of impeller blades is greater in number than the second plurality of impeller blades.5 ...

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Номер записи: 59
14-03-2019 дата публикации

IMPELLER, ROTARY MACHINE, AND IMPELLER MANUFACTURING METHOD

Номер: US20190078583A1
Автор: Tokuyama Shinichiro, YAMASHITA Shuichi
Принадлежит: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION

An impeller includes: a disc having a disc shape; a plurality of blades formed on a surface facing a first side in an axial direction of the disc; and a cover surrounding the plurality of blades. The cover includes: an inner circumferential surface connected to the blades with a diameter decreasing from the second side toward a first side in the axial direction; and a distal end surface extending from an end portion of the inner circumferential surface on the first side in the axial direction toward the outside in a radial direction and facing the first side in the axial direction. A front edge portion extends from a boundary between the inner circumferential surface and the distal end surface toward the inside in the radial direction. 1. An impeller comprising:a disc having a disc shape about an axis;a plurality of blades formed on a surface facing a first side in an axial direction of the disc at intervals in a circumferential direction around the axis; anda cover surrounding the plurality of blades from the first side in the axial direction, whereinthe cover includes:an inner circumferential surface connected to the blades with a diameter decreasing from the second side toward a first side in the axial direction; anda distal end surface extending from an end portion of the inner circumferential surface on the first side in the axial direction toward the outside in a radial direction and facing the first side in the axial direction, anda front edge portion, which is an edge portion of the blade on the first side in the axial direction, extends from a boundary between the inner circumferential surface and the distal end surface toward the inside in the radial direction.2. The impeller according to claim 1 , wherein the distal end surface has a convex curved surface disposed on the second side in the axial direction toward the inside in the radial direction.3. The impeller according to claim 1 , wherein the front edge portion has a protruding edge portion protruding ...

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Номер записи: 60
26-03-2015 дата публикации

Impeller for a Ventilation Unit and Ventilation Unit Comprising said Impeller

Номер: US20150086371A1
Автор: Avonto Alessandro, Cella Mazzariol Pietro Paolo, Galanzino Gian Francesco
Принадлежит:

The present invention refers to an impeller () for a ventilation unit (), especially for use in plants for the aerobic treatment of organic waste. According to the invention, said impeller () comprises means () adapted to create an under-pressure zone in the central region of the impeller itself, at its hub (). Thanks to this measure, condensate water deriving from the humidity of the air sucked/blown by the ventilation unit () is prevented from leaking along the rotation shaft () of the impeller (), towards its motor and towards the outside environment. 1. Impeller for ventilation unit , comprises a housing , a pair of solid disk-like plates , received within said housing arranged mutually facing and parallel at a certain distance from each other and provided centrally with a through-hole for a cylindrical hub , a plurality of first radial blades arranged between said plates and extending from said hub , wherein the impeller comprises means for creating , in use , at the central hub of said plates , a zone having a pressure lower than that in the peripheral zone of said plates.2. Impeller according to claim 1 , wherein on at least a first one of said plates claim 1 , on its side opposite to the side facing the second one of said plates and facing the inner wall of said housing there are provided a plurality of second radial blades extending from said hub towards the periphery of said at least one plate claim 1 , said second radial blades cooperating claim 1 , in use claim 1 , with said inner wall of said housing for creating claim 1 , at said central hub of said plates claim 1 , a zone having a pressure lower than that on the peripheral zone of said plates.3. Impeller according to claim 2 , wherein said second radial blades extend perpendicularly to the surface of said at least one plate claim 2 , between said at least one plate and said inner wall of said housing.4. Impeller according to claim 2 , wherein said first radial blades and said second radial blades are ...

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Номер записи: 61
19-03-2020 дата публикации

CENTRIFUGAL FAN

Номер: US20200088209A1
Автор: CHEN Chien-Jung, HSU Chih-Tsung, WU Chan-Yi, WU Hsin-Hsien
Принадлежит:

A centrifugal fan includes a casing and an impeller module. The casing defines an accommodating space having an air inlet and an air outlet. The impeller module is mounted in the accommodating space for allowing air flow to enter from the air inlet and exit from the air outlet. The impeller module includes a body and a plurality of blade units connected to and annularly distributed along a circumference of the body. Each blade unit has a plurality of blades arranged equi-angularly. A blade spacing which is defined between each adjacent pair of the blades of one of the blade units is different from a blade spacing which is defined between each adjacent pair of the blades of another one of the blade units. 1. A centrifugal fan comprising:a casing defining an accommodating space that has an air inlet and an air outlet; andan impeller module mounted in said accommodating space and rotatable about an axis for allowing air flow to enter from said air inlet and exit from said air outlet, said impeller module including a body and a plurality of blade units connected to and annularly distributed along a circumference of said body, each of said blade units having a plurality of blades that are equi-angularly arranged along said circumference of said body, a blade spacing which is defined between each adjacent pair of said blades of one of said blade units being different from a blade spacing which is defined between each adjacent pair of said blades of another one of said blade units.2. The centrifugal fan as claimed in claim 1 , wherein:said plurality of blade units includes at least three blade units;the blade spacings among said blade units are different; andsaid blade units are arranged in the order of size of the blade spacings.3. The centrifugal fan as claimed in claim 1 , wherein said impeller module includes exactly three blade units.4. The centrifugal fan as claimed in claim 1 , wherein said impeller module includes exactly four blade units.5. The centrifugal fan as ...

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Номер записи: 62
01-04-2021 дата публикации

BLOWER DEVICE

Номер: US20210095686A1
Автор: SHIRAISHI Yukinobu, UCHINO TAKASHI
Принадлежит:

A blower device includes a rotor rotatable about a central axis extending in a vertical direction, an impeller attached to the rotor, and an annular ring centered on the central axis. The rotor includes a rotor cylindrical portion that extends in the axial direction and a flange that extends radially outward from the rotor cylindrical portion. The impeller includes an annular impeller base centered on the central axis. The ring is connected to the impeller base in the axial direction. The flange is held between the impeller base and the ring in the axial direction. 1. A blower device comprising:a rotor rotatable about a central axis extending in a vertical direction;an impeller attached to the rotor; anda ring that is annular and centered on the central axis; wherein a rotor cylindrical portion extending in an axial direction; and', 'a flange that extends radially outward from the rotor cylindrical portion;, 'the rotor includesthe impeller includes an impeller base that is annular and centered on the central axis;the ring is connected to the impeller base in the axial direction; andthe flange is held between the impeller base and the ring in the axial direction.2. The blower device according to claim 1 , wherein the impeller base includes an impeller first protrusion protruding downward from a lower surface of the impeller base claim 1 , the impeller first protrusion being disposed radially outward of the flange and connected to the ring.3. The blower device according to claim 2 , wherein a tip of the impeller first protrusion is welded to the ring.4. The blower device according to claim 2 , wherein the ring includes a ring first protrusion that protrudes upward at a position radially outward of the impeller first protrusion claim 2 , the ring first protrusion facing the impeller first protrusion in a radial direction.5. The blower device according to claim 4 , whereinan impeller second protrusion is on the lower surface of the impeller base at a position radially ...

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Номер записи: 63
12-05-2022 дата публикации

Impeller, multi-blade air-sending device, and air-conditioning apparatus

Номер: US20220145893A1
Автор: Hiroshi Tsutsumi, Hiroyasu Hayashi, Kazuya MICHIKAMI, Ryo Horie, Takahiro Yamatani, Takuya Teramoto
Принадлежит: Mitsubishi Electric Corp

An impeller includes a backing plate, a rim disposed so as to face the backing plate, and a plurality of blades arranged in a circumferential direction around a virtual rotation axis of the backing plate. Each of the plurality of blades has an inner circumferential end, an outer circumferential end a sirocco blade portion being forward-swept and including the outer circumferential end and having a blade outlet angle of larger than 90 degrees, and a turbo blade portion being swept-back and including the inner circumferential end, a first region located closer to the backing plate than a middle point in an axial direction of the rotation axis, and a second region located closer to the rim than the first region. Each of the plurality of blades is formed such that a blade length in the first region is longer than a blade length in the second region. In the first region and the second region, a ratio of the turbo blade portion in the radial direction is larger than a ratio of the sirocco blade portion in the radial direction.

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Номер записи: 64
28-03-2019 дата публикации

Centrifugal blower

Номер: US20190093665A1
Автор: Fumiya Ishii, Masanori Yasuda, Shuzo Oda
Принадлежит: Denso Corp, Soken Inc

A centrifugal blower includes: a centrifugal fan, which includes a shroud ring; and a case. The case includes a cover portion that covers a surface of the shroud ring located on one side in an axial direction. The cover portion includes a recess formed in a cover opposing surface, which is opposed to the shroud ring, and the recess is shaped in a form of a circle. The shroud ring includes at least one projection that is formed in a ring opposing surface, which is opposed to the cover portion. A gap is formed between the cover portion and the shroud ring. A shortest distance between a radially inner end part of the shroud ring and the cover portion is set to be larger than a shortest distance between a surface of the projection and a surface of the recess.

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Номер записи: 65
06-04-2017 дата публикации

CENTRIFUGAL FAN

Номер: US20170097015A1
Автор: Choi Dongwook, KIM Jinsoo, SONG Kiwook
Принадлежит:

A centrifugal fan includes: a housing; an impeller which is mounted in the housing; a hub which is provided in the impeller and is rotated by a driving force of a motor; and a plurality of blades which radially extend at the hub. Each of the plurality of blades is formed to have a shape curved from a leading edge to a trailing edge in a rotational direction of the impeller in each of the plurality of blades. A farthest point from a plane connecting the leading edge and the trailing edge is defined as a peak portion. The peak portion is placed closer to the leading edge than the trailing edge. 1. A centrifugal fan comprising:a housing;an impeller mounted inside the housing;a hub provided inside the impeller, the hub being rotated by a driving force of a motor; anda plurality of blades attached to the hub, each of the blades radially extending from the hub and having a leading edge and a trailing edge;wherein each of the plurality of blades has a curved shape from the leading edge to the trailing edge in a rotational direction of the impeller,wherein a peak point of each of the plurality of blades is located closer to the leading edge than the trailing edge, whereby the peak point is a point that is farthest from a plane connecting the leading edge and the trailing edge.2. The centrifugal fan of claim 1 , wherein a ratio of a distance from the leading edge to the peak portion to a distance from the leading edge to the trailing edge is defined as a position of maximum camber (POMC) value claim 1 , the POMC value being greater than or equal to 0.01 and less than or equal to 0.49.3. The centrifugal fan of claim 1 , wherein a ratio of a height of the peak portion to a distance from the leading edge to the trailing edge is defined as a maximum camber (MC) value claim 1 , the MC value being greater than or equal to 0.05 and less than or equal to 0.16.4. The centrifugal fan of claim 1 , wherein an entrance angle of air at the leading edge is greater than or equal to 90.74° ...

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Номер записи: 66
29-04-2021 дата публикации

Mixed-flow compressor configuration for a refrigeration system

Номер: US20210123444A1
Автор: Michael M. JOLY, Vishnu M. Sishtla
Принадлежит: CARRIER CORPORATION

A centrifugal compressor includes a casing. An impeller is arranged within the casing. The impeller is rotatable about an axis. A diffuser section is arranged within the casing. The diffuser section is positioned axially downstream from an outlet of the impeller and includes a forward portion fixed relative to the impeller and an aft portion distinct from the forward portion.

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Номер записи: 67
10-07-2014 дата публикации

FAN MODULE

Номер: US20140193242A1
Автор: KUO Chun-Chih, Lin Che-Wei
Принадлежит: ACER INCORPORATED

A fan module including a first fan, a second fan and a actuator is provided. The first fan has a first pivot portion and a plurality of first fan blades. Each first fan blade has a first blade face. The second fan has a second pivot portion and a plurality of second fan blades corresponding to the first fan blades. Each second fan blade has a second blade face. The second pivot portion is slidably disposed at a containing cavity of the first pivot portion. The actuator is adapted to drive the first fan to rotate. The first fan is adapted to drive the second fan to rotate. When the second pivot portion protrudes out of the containing cavity, a part of each of the second blade faces does not overlap with the corresponding first blade face along a direction perpendicular to the corresponding first blade face. 1. A fan module for an electronic device , comprising:a first fan, having a first pivot portion and a plurality of first fan blades, wherein each of the first fan blades is connected to the first pivot portion and has a first blade face, and the first pivot portion has a first containing cavity;a second fan, having a second pivot portion and a plurality of second fan blades, wherein each of the second fan blades is connected to the second pivot portion and has a second blade face, the second pivot portion is slidably disposed in the first containing cavity along an axis, and the second fan blades respectively correspond to the first fan blades; andan actuator, coupled to the first pivot portion for driving the first fan to rotate around the axis, wherein the first fan drives the second fan to rotate around the axis,wherein when the second pivot portion slides to a first position to protrude out of the first containing cavity, a portion of each of the second blade faces does not overlap with a corresponding one of the first blade faces in a direction perpendicular to the corresponding first blade face.2. The fan module as claimed in claim 1 , wherein when the ...

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Номер записи: 68
30-04-2015 дата публикации

VANE PACK ASSEMBLY FOR VTG TURBOCHARGERS

Номер: US20150118038A1
Автор: Ward Daniel N.
Принадлежит:

A vane pack assembly is provided that can remove the spacers between the upper and lower vane rings to a location outside of the exhaust flow through the vane ring. In particular, the spacers are located within the vanes. Further, the assembly can effectively retain the small blocks used in varying the angle of the vanes on their associated vane pivot posts. A vane pack with such a configuration can use inexpensive parts, eliminate the need for welding of the vane pack and/or simplify the vane pack assembly process. Further, the vane pack can be decoupled from the turbine housing, thereby avoiding problems with differential thermal expansion. 1100. A vane pack () for a variable geometry turbocharger comprising:{'b': 26', '28, 'an upper vane ring () and a lower vane ring ();'}{'b': 60', '26', '28', '60', '65', '68', '65', '70', '60, 'a plurality of vanes () operatively positioned between the upper and lower vane rings (, ), each vane () having opposing cheek surfaces () with a vane post () protruding from one of the cheek surfaces (), a bore () extending through each vane ();'}{'b': 72', '90', '72', '26', '28', '70', '60, 'a plurality of fasteners () having a head () at one end, each fastener () extending through the upper and lower vane rings (, ) and the bore () of a respective one of the vanes (); and'}{'b': 74', '26', '28', '74', '70', '60, 'a plurality of spacers () for maintaining a minimum distance between the upper and lower vane rings (, ), each spacer () being received in the bore () of a respective one of the vanes (),'}{'b': 60', '68', '72', '74', '26', '28, 'the vanes () being pivotable about the vane post () or the fastener (), whereby the spacers () are not located within the flow path between the upper and lower vane rings (, ).'}2907292289492. The vane pack of claim 1 , wherein the head () of the fasteners () is received in a counterbore () of the lower vane ring () so as to be substantially flush with or recessed from an outer surface () of the ...

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Номер записи: 69
26-04-2018 дата публикации

AXIAL FAN WHEEL

Номер: US20180112675A1
Автор: Gell Christian, Neff Andreas
Принадлежит:

An axial fan wheel, in particular for the radiator of a motor vehicle engine, is described. The axial fan wheel includes a crown ring having a multiplicity of rotor blades, a hub having an inner ring which is connected or connectable to a drive shaft, and having, for the purpose of torque transmission, connection surfaces along an outer periphery of the hub which are connected to the inner ring and to the crown ring. The hub has through-passages between the inner ring and the outer periphery. At least one element, arranged rotationally fixedly on the axial fan wheel inside the crown ring, is designed to maintain a pressure difference in the axial direction when the axial fan wheel rotates. 1. An axial fan wheel , comprising:a crown ring having a plurality of rotor blades;a hub having an inner ring connectable to a drive shaft, having, for the purpose of torque transmission, connection surfaces along an outer periphery of the hub which are connected to the inner ring and to the crown ring, wherein the hub has through-passages between the inner ring and the outer periphery, andat least one element, arranged in a rotationally fixed manner on the axial fan wheel inside the crown ring, designed to maintain a pressure difference in the axial direction when the axial fan wheel rotates.2. The axial fan wheel according to claim 1 , wherein a surface portion claim 1 , projecting into a plane of rotation claim 1 , of the hub between the inner ring and the outer periphery is smaller than a surface portion claim 1 , projected into the plane of rotation claim 1 , of the through-passages between the inner ring and the outer periphery.3. The axial fan wheel according to claim 1 , wherein a radial width of the through-passages is greater than a diameter of the inner ring.4. The axial fan wheel according to claim 1 , wherein the at least one element closes off the through-passages between the inner ring and the outer periphery claim 1 , or the interior of the crown ring.5. The axial ...

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Номер записи: 70
18-04-2019 дата публикации

Polymer Compressor Wheel with Co-Molded Bore Insert

Номер: US20190113046A1
Автор: Carr Malcolm Philip, Palmer-White Tristram, Rogerson Andrew, Slater Simon
Принадлежит: BORGWARNER INC.

A centrifugal compressor wheel assembly that can be employed in devices such as turbochargers or as a component for mechanisms requiring a compressor wheel assembly that includes a tubular insert with a compressor wheel member connected thereto which engages a shaft and a turbocharger including the compressor wheel assembly. The tubular insert has a wall member defining a shaft bore that extends from an inlet end to an opposed outlet end. The wall member has an outer circumferential surface and an opposed inner circumferential surface. At least one engagement member may be defined on the inner circumferential surface. An engagement member may be defined on the outer circumferential surface. The tubular insert can be composed of a suitable metal. 1. A compressor wheel assembly comprising:a metal tubular insert having a shaft bore extending from an inlet end to an outlet end opposed to the inlet end, and a wall member, the wall member having an outer circumferential surface and an inner circumferential surface opposed to the outer circumferential surface defining the tubular insert shaft bore, wherein the at least one of the outer circumferential surface or inner circumferential surface includes at least one engagement member defined thereon;a compressor wheel member composed of a polymeric material, the compressor wheel having an axially extending center portion molded on to the tubular insert, the center portion having an inlet end and an outlet end opposed to the inlet end, the compressor wheel member further having a blade array projecting outward from the center portion, the blade array having an outer surface and an inner region and a plurality of circumferentially-spaced, radially and axially extending blades disposed thereon; anda shaft having an outer surface, the shaft extending through the tubular insert wherein the at least one contoured surface region on the opposed inner surface of the tubular insert engages the outer surface of the shaft.2. The ...

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Номер записи: 71
24-07-2014 дата публикации

HIGH OUTPUT FAN WHEEL

Номер: US20140205459A1
Автор: Dobie Michael J.
Принадлежит: Standex International Corporation

A high output bent fin type of fan wheel for use in appliances such as but not limited to microwave ovens. The fan wheel is made by single 90-degree bends for each fan blade relative to the flat mounting plate. Unique to fan wheel is the large fan blade surface area in relation to the total area of the metal used in wheel. 1. A centrifugal fan for an oven having a fan motor , wherein said fan is made from a single sheet of metal using a bent fin-type plurality of fan blades , said fan comprising:a mounting plate having a plate surface area, wherein said mounting plate is used to connect said fan to the fan motor;a plurality of fan blades wherein each blade has a tip and wherein said plurality of fan blades having a fan blade surface area, wherein the fan blade surface area is greater than the plate surface area of said mounting plate; and wherein each of said plurality of fan blades is made by a single 90 degree bend relative to said mounting plate; and wherein each blade of said plurality of fan blades is inclined backward at a predetermined angle.2. The centrifugal fan of wherein the predetermined angle is 39 degrees.3. The centrifugal fan of further comprising an outer ring attached to the tips of said plurality of fan blades in order to stabilize each blade at the proper 90 degrees.4. The centrifugal fan of is made from stainless steel which allows for thinner claim 1 , less expensive and lighter weight materials.5. The centrifugal fan of wherein the number of said fan blades is an odd number.6. The centrifugal fan of where the odd number of blades is 7. This application claims benefit of U.S. Provisional Application Ser. No. 61/755,546 filed Jan. 23, 2013, pursuant to 35 USC §119 (e).This invention relates to fans for appliances, in particular, high output bent fin type of fan wheels.Fan choices for cooking ovens generally include centrifugal, axial, and missed flow blower wheels. Centrifugal fans are further broken down into forward inclined, backward inclined ...

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Номер записи: 72
25-08-2022 дата публикации

Impeller for Centrifugal Fan and Centrifugal Fan

Номер: US20220268294A1
Автор: Feng Shifeng, Ma Xiaokui, WANG LI
Принадлежит:

The present application discloses an impeller for a centrifugal fan and a centrifugal fan. The impeller comprises a support member and several vanes. The support member has an inner wall that defines a hollow portion. The several vanes are arranged inside the hollow portion, each of the several vanes is connected with the inner wall and extends along the axial direction of the support member, and the several vanes are arranged along the circumferential direction of the support member. Each of the several vanes is bent and comprises a front edge, a tail edge, a convex suction surface, and a concave pressure surface, the suction surface and the pressure surface are arranged to oppose each other, and the front edge and the tail edge are arranged to oppose each other, wherein the tail edge is connected with the inner wall of the support member, and wherein several protrusions are provided on the suction surface, and the several protrusions are arranged to be close to the front edge. The protrusions can regulate the flow of a fluid immediately when the fluid contacts the vanes. During the flow regulation process, a large vortex in the fluid can be divided into several small vortices. Such small vortices have smaller friction resistance, and the kinetic energy dissipated from the motion of the small vortices themselves can be partially cancelled out, thereby reducing the noise of the impeller and improving the performance of the centrifugal fan. 1. An impeller for a centrifugal fan , wherein the impeller comprises:a support member, wherein the support member is cylindrical and has an inner wall that defines a hollow portion; anda plurality of vanes arranged inside the hollow portion, wherein each vane of the several plurality of vanes is connected with the inner wall and extends along an axial direction of the support member, and the plurality of vanes is arranged along a circumferential direction of the support member;wherein each vane of the plurality of vanes is bent ...

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Номер записи: 73
25-04-2019 дата публикации

FAN IMPELLER STRUCTURE AND COOLING FAN THEREOF

Номер: US20190120243A1
Автор: Wu Chun-Ming
Принадлежит:

A fan impeller structure and a cooling fan thereof. The fan impeller structure consisting of a hub and a flow guide body. The hub has an extension section extending from outer circumference of the hub. The extension section has a first face and a second face. An axial center of the flow guide body is defined with an axial line. A fitting section outward extends from the axial line. A spoiler section is connected to the fitting section in a direction away from the axial line. The spoiler section is formed with multiple axial perforations that communicate with multiple radial perforations. The flow guide body is disposed on the first or second face of the extension section of the hub. The flow guide body is employed to replace the blades of conventional cooling fan. The perforations of the flow guide body can forcedly guide air in a narrow space. 1. A fan impeller structure consisting of a hub and a flow guide body , the hub having an extension section extending from outer circumference of the hub , the extension section having a first face and a second face , an axial center of the flow guide body being defined with an axial line , a fitting section outward extending from the axial line , a spoiler section being connected to the fitting section in a direction away from the axial line , the spoiler section being formed with multiple axial perforations that communicate with multiple radial perforations such that an airflow is guided through said perforations and propelled by said spoiler , the flow guide body being disposed on the first face or the second face of the extension section of the hub , and the flow guide body is selected from a group consisting of a foamed porous structure , a spongey , porous wooden material and a foamed metal.2. The fan impeller structure as claimed in claim 1 , wherein a recess is formed between the fitting section of the flow guide body and the outer circumference of the hub.3. The fan impeller structure as claimed in claim 2 , wherein ...

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Номер записи: 74
25-04-2019 дата публикации

Fan Wheel Disc And Fan Wheel

Номер: US20190120245A1
Автор: GRUBER Erhard, Konzal Alexander
Принадлежит:

A fan wheel disc has at least one region that extends in a curved manner, at least in some sections, from radially inside to radially outside. A blade attachment surface is formed at least in some sections. The blade attachment fixedly connects an axial end side of at least one fan wheel blade. The blade attachment surface extends, at least in some sections, within the curved region of the fan wheel disc within a two-dimensional connecting plane. 115-. (canceled)16. A fan wheel disc having at least one region that extends in a curved manner at least in some sections from radially inside to radially outside , comprising:a blade attachment surface for fixedly connecting an axial end side of at least one fan wheel blade, the blade attachment surface is formed at least in some sections;the blade attachment surface extends, at least in some sections, within the curved region of the fan wheel disc within a two-dimensional connecting plane (E).174. The fan wheel disc according to claim 16 , wherein it is plastically deformed along the at least one blade attachment surface () at least in some sections.18. The fan wheel disc according to claim 17 , wherein the at least one blade attachment surface is formed in a press-in section that is pressed by plastic deformation in an axial direction into the fan wheel disc.19. The fan wheel disc according to claim 18 , wherein the press-in section comprises a deformation section that is plastically deformed in axial direction and protrudes axially with respect to a disc surface and which extends along the connecting plane (E).20. The fan wheel disc according to claim 19 , wherein claim 19 , viewed in circumferential direction claim 19 , the deformation section comprises an inlet section that forms a rounded off leading edge.21. The fan wheel disc according to wherein the deformation section has a variable width (B) along its extension in circumferential direction.22. The fan wheel disc according to claim 21 , wherein the width (B) of ...

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Номер записи: 75
02-05-2019 дата публикации

FAN

Номер: US20190128278A1
Автор: CHAN Chih-Wei, Yeh Ching-Hsien
Принадлежит: DELTA ELECTRONICS, INC.

A fan includes a hub and a blade assembly. The hub has a central portion and an extension portion. The extension portion is extended outwardly from a peripheral edge of the central portion. The blade assembly includes a plurality of blades. Each blade has a leading edge, each of the leading edges is an end point of each blade that is most close to the central portion. The blades are disposed around the hub. At least a part of the leading edges of the blades are connected to the extension portion, and distances between a center of the central portion and the leading edges of at least two blades are different. Therefore, the factors of fan and the quality of voice could be enhanced, and the multi-frequencies noise could be avoided during operation. 1. A fan , comprising:a hub having a central portion and an extension portion, wherein the extension portion is extended outwardly from a peripheral edge of the central portion; anda blade assembly comprising a plurality of blades, wherein each of the blades has a leading edge, each of the leading edges is an end point of each of the blades that is most close to the central portion, the blades are disposed around the hub, at least a part of the leading edges of the blades are connected to the extension portion, and distances from at least two leading edges to a center of the central portion are different.2. The fan according to further comprising a ring-shaped structure claim 1 , wherein the ring-shaped structure is disposed around the hub with center at the center of the central portion claim 1 , each of the blades has a rear tip claim 1 , each of the rear tips is an end point of each of the blades that is far away from the central portion claim 1 , and the ring-shaped structure is connected to the rear tip of each of the blades or the adjacency of the rear tip of each of the blades.3. The fan according to claim 2 , wherein when the ring-shaped structure is connected to the adjacency of the rear tip of each of the blades ...

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Номер записи: 76
02-05-2019 дата публикации

HEAT DISSIPATION FAN

Номер: US20190128279A1
Автор: Cheng Cheng-Yu, Hsieh Cheng-Wen, LIAO Wen-Neng, Lin Yu-Ming, Yu Shun-Ta
Принадлежит: ACER INCORPORATED

A heat dissipation fan including a hub and a plurality of metal fan blades disposed all around the hub. Each of the metal fan blades has a first end and a second end opposite to each other, wherein the first end is connected to the hub, and the metal fan blade has a flap wing at the second end. An angle is included between the flap wing and a surface of the metal fan blade. 1. A heat dissipation fan , comprising:a hub; anda plurality of metal fan blades, disposed all around the hub, each of the metal fan blades having a first end and a second end opposite to each other, wherein the first end is connected to the hub, the second end has at least one flap wing, and an angle is included between the flap wing and a surface of the metal fan blade, the flap wing extending from a first metal fan blade of the plurality of metal fan blades toward a second metal fan blade of the plurality of metal fan blades to maintain a gap between the flap wing and the second metal fan blade, and the first metal fan blade being adjacent to the second metal fan blade.2. The heat dissipation fan as recited in claim 1 , wherein each of the metal fan blades further has a broken blade edge located at the second end claim 1 , and the flap wing is adjacent to the broken blade edge.3. The heat dissipation fan as recited in claim 2 , wherein the second end has a pair of flap wings claim 2 , and the pair of flap wings are connected at two opposite sides of the broken blade edge.4. The heat dissipation fan as recited in claim 2 , wherein the metal fan blade claim 2 , the broken blade edge and the flap wing are formed by stamping and being a piece of sheet metal.5. The heat dissipation fan as recited in claim 1 , wherein the flap wing appears to have a swept-back design with respect to a rotation direction of the heat dissipation fan.6. The heat dissipation fan as recited in claim 1 , wherein the flap wing appears to have a forward-swept design with respect to a rotation direction of the heat ...

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Номер записи: 77
19-05-2016 дата публикации

IMPELLER FOR CENTRIFUGAL FAN AND CENTRIFUGAL FAN

Номер: US20160138614A1
Автор: FUCHIBE Manabu
Принадлежит:

There is provided an impeller for a centrifugal fan which rotates around an axis extending from one side to the other side. The impeller includes a main plate, a plurality of blades each having one side portion located at the one side and the other side portion located at the other side, the one side portion being connected to a first surface of the main plate, and a connecting ring which connects the other side portions of the blades. A first circumferential groove to which a first balance weight is attachable is formed in an outer circumferential portion of a second surface of the main plate facing toward the one side. A second circumferential groove to which a second balance weight is attachable is formed in the connecting ring. An annular raised portion is formed on the first surface at a portion corresponding to the first circumferential groove. 1. An impeller for a centrifugal fan which rotates around an axis extending from one side to the other side , the impeller comprising:a main plate;a plurality of blades each having one side portion located at the one side and the other side portion located at the other side, the one side portion being connected to a first surface of the main plate; anda connecting ring configured to connect the other side portions of the plurality of blades,wherein a first circumferential groove to which a first balance weight is attachable is formed in an outer circumferential portion on a second surface of the main plate, the second surface facing toward the one side;a second circumferential groove to which a second balance weight is attachable is formed in the connecting ring; andan annular raised portion is formed on the first surface of the main plate, at a location corresponding to the first circumferential groove.2. The impeller for the centrifugal fan according to claim 1 , wherein the main plate has a cup-shaped hub section protruding toward the other side; anda shaft is fixed to the hub section.3. The impeller for the ...

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Номер записи: 78
17-05-2018 дата публикации

Centrifugal Compressor

Номер: US20180135643A1
Автор: HIRADATE Kiyotaka, Kawaguchi Daisuke, SAKAMOTO Kiyohide
Принадлежит:

A centrifugal compressor of the present invention can be operated without degrading the efficiency of the impeller or reducing the operating range thereof even when the centrifugal compressor is operated in an environment in which a liquid likely mixes. A centrifugal compressor of the present invention includes a rotating shaft which rotates rotationally, and an impeller including a hub fixed to the rotating shaft and plural vanes fixed to the hub at a predetermined interval in a circumferential direction. The centrifugal compressor compresses a fluid by rotation of the impeller. The hub includes plural through holes penetrating the hub from a front side to a rear side of the impeller. 1. A centrifugal compressor comprising:a rotating shaft which rotates rotationally; andan impeller including a hub fixed to the rotating shaft and a plurality of vanes fixed to the hub at a predetermined interval in a circumferential direction;wherein the centrifugal compressor compresses a fluid by rotation of the impeller, andwherein the hub includes a plurality of through holes penetrating the hub from a front side to a rear side of the impeller.2. The centrifugal compressor according to claim 1 ,wherein the through holes are provided between the vanes on the rotating shaft side.3. The centrifugal compressor according to claim 1 ,wherein the through holes are located between an inlet radius Rh of the hub and an inlet radius Rsh of a shroud of the vanes.4. The centrifugal compressor according to claim 1 ,wherein a plurality of grooves extended to the through holes are formed along an inner surface of the hub.5. The centrifugal compressor according to claim 4 ,wherein the grooves and the through holes are located between an inlet radius Rh of the hub and an inlet radius Rsh of a shroud of the vanes.6. The centrifugal compressor according to claim 1 ,wherein the impeller includes a leakage reducing member on the rear side, the leakage reducing member reducing a leakage flow flowing ...

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Номер записи: 79
30-04-2020 дата публикации

Blower Assembly

Номер: US20200132085A1
Автор: Adamski Stephen A., Baker Stephen, Baral Madan, Chinoda Zvirimumwoyo P., Shoemaker Nathan K.
Принадлежит:

In accordance with one aspect of the current disclosure, a blower assembly is provided that includes a housing having a pair of side walls and an outer wall connecting the side walls. The outer wall has a cutoff portion and an outlet portion. The housing includes an outlet defined at least in part by an outlet end of the outlet portion and the cutoff portion. The outer wall includes a scroll portion connecting the cutoff portion and the outlet portion. The outlet portion flares outwardly away from the cutoff portion as the outlet portion extends from the scroll portion to the outlet end of the outlet portion. 1. A blower assembly comprising:a housing having a pair of side walls and an outer wall connecting the side walls, the outer wall having a cutoff portion and an outlet portion;an outlet of the housing defined at least in part by an outlet end of the outlet portion and the cutoff portion;a scroll portion of the outer wall connecting the cutoff portion and the outlet portion; andthe outlet portion flaring outwardly away from the cutoff portion as the outlet portion extends from the scroll portion to the outlet end of the outlet portion.2. The blower assembly of claim 1 , wherein the outlet portion of the housing outer wall is substantially planar.3. The blower assembly of claim 2 , wherein the outer wall includes a scroll portion end between the scroll portion and the outlet portion claim 2 , the scroll portion end forming a transition from the curvature of the scroll portion to the outlet portion.4. The blower assembly of wherein the scroll portion has an inner radius that increases continuously as the scroll portion extends from the cutoff portion to the outlet portion.5. The blower assembly of wherein the scroll portion has a radius of curvature (RH) defined according to the following equation:{'br': None, 'i': RH=RW', 'K*L, '*(1+)'}wherein:K is the sine of a development angle in the range of 0.13 radians to 0.17 radians, 'RW is an outer radius of a fan for ...

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Номер записи: 80
09-05-2019 дата публикации

BLOWER IMPELLER FOR A HANDHELD BLOWER

Номер: US20190136866A1
Автор: Kedelty Dominic, Khorshidi Maryam
Принадлежит:

A blower impeller having a plate with a first side surface, a second side surface, and an outer circumferential edge extending between the first and second side surfaces; a front blade series extending from the first side surface, the front blade series comprising a plurality of front fins, wherein each front fin includes a first radius of curvature and a second radius of curvature; and a rear blade series extending from the second side, the rear blade series comprising a plurality of rear fins. 1. A blower impeller , comprising:a plate having a first side surface, a second side surface, and an outer circumferential edge extending between the first and second side surfaces;a front blade series extending from the first side surface, the front blade series comprising a plurality of front fins, wherein each front fin includes a first radius of curvature and a second radius of curvature; anda rear blade series extending from the second side, the rear blade series comprising a plurality of rear fins.2. The blower impeller as in claim 1 , wherein the first side surface further comprises a central hub having a detent and a sloped transition portion.3. The blower impeller as in claim 2 , wherein the sloped transition portion comprises a gradient claim 2 , the gradient transitioning radially outward from the central hub toward the outer circumferential edge.4. The blower impeller as in claim 3 , wherein the first side surface includes a substantially flat portion extending radially from the outer circumferential edge to substantially adjacent the central hub.5. The blower impeller as in claim 3 , wherein the sloped transition portion includes a substantially linear plane claim 3 , a concave-sloping plane or a convex-sloping plane.6. The blower impeller as in claim 1 , further comprising a cylindrical projection claim 1 , wherein the cylindrical projection is centrally located on the second side surface and extends perpendicularly therefrom.7. The blower impeller as in claim ...

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Номер записи: 81
26-05-2016 дата публикации

CENTRIFUGAL ROTOR

Номер: US20160146215A1
Автор: Sgambati Stéphane
Принадлежит:

A centrifugal rotor includes a hub () having a longitudinal axis (), a fluid inlet (), a first flange referred to as upstream flange () and having an opening () around the hub (), a second flange referred to as downstream flange () separated from the first flange by blades () thus forming ducts each delimited by the first flange (), the second flange () and two blades () and extending from the fluid inlet () to a peripheral outlet (), near the peripheral outlet () the first flange () having a concave zone () facing towards the ducts whereas the second flange () has a convex zone () facing towards the ducts. 110-. (canceled)112. A centrifugal rotor () , comprising:{'b': 10', '8, 'a hub () having a longitudinal axis ();'}{'b': '20', 'a fluid inlet ();'}{'b': 12', '22', '10, 'a first flange upstream () and having an opening () around the hub ();'}{'b': 14', '16', '12', '14', '16', '20', '26, 'a second flange () separated downstream from said first flange by vanes () thereby forming channels each delimited by the first flange (), the second flange () and two of the vanes () extending from the fluid inlet () to a peripheral outlet ();'}{'b': 26', '12', '32', '14', '34, 'wherein at a proximity of the peripheral outlet (), the first flange () includes a concave area () oriented towards the channels, and the second flange () includes a convex area () oriented towards the channels.'}121214. The centrifugal rotor of claim 11 , wherein the first flange () and the second flange () comprise a circular shape around the longitudinal axis.13128. The centrifugal rotor of claim 11 , wherein a surface tangent to the concave area of the first flange () exiting the channel forms an angle of between 1° and 45° claim 11 , with a radial plane perpendicular to the longitudinal axis ().14368. The centrifugal rotor of claim 13 , wherein the surface tangent () to the concave area of the first flange exiting the channel forms an angle of between 10′ and 30° claim 13 , with a radial plane ...

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Номер записи: 82
24-05-2018 дата публикации

IMPELLER FOR A FLUID PUMP

Номер: US20180142696A1
Автор: Le Dore Antoine, Muller Sylvain
Принадлежит:

A monolithic impeller includes a gear opening defined by a cylindrical member and an inner surface being splined for receiving a gear shaft and defining an impeller axis. A plurality of blades each include an arcuate configuration extending outwardly relative to the impeller axis. The blades include a proximal end disposed proximate the cylindrical member and a distal end disposed radially outwardly from the cylindrical member. A cover member extends radially outwardly to the distal end of the plurality of blades and defines a fluid inlet that is concentric with the impeller axis. A hub member is spaced from the cover member by the blades extending radially outwardly from the cylindrical member. The proximal end of the blades extend radially inwardly of the fluid inlet and the distal end of the blades terminating at a common concentric diameter as an outermost portion of the cover member and the hub member. 1. An impeller for a fluid pump , comprising:a gear opening defined by a cylindrical member including an inner surface being splined for receiving a gear shaft with said cylindrical member defining an impeller axis;a plurality of blades including an arcuate configuration extending outwardly relative to said impeller axis, each of said plurality of blades including a proximal end being disposed proximate said cylindrical member and a distal end disposed radially outwardly from said cylindrical member;a cover member extending radially outwardly to said distal end of said plurality of blades and defining a fluid inlet being concentric with said impeller axis;a hub member spaced from said cover member by said plurality of blades and extending radially outwardly from said cylindrical member; and said proximal end of said blades extending radially inwardly of said fluid inlet and continuously in along said impeller axis to and end portion with said distal end of said blades terminating at a common concentric diameter as an outermost portion of said cover member and ...

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Номер записи: 83
08-09-2022 дата публикации

FAN IMPELLER WITH SECTIONS HAVING DIFFERENT BLADE DESIGN GEOMETRIES

Номер: US20220287202A1
Автор: Aiello Anthony Joseph, Degner Brett W., Dybenko Jesse T., NAGHIB LAHOUTI Arash, Prather Eric R.
Принадлежит:

Fan assemblies are disclosed. Fan assemblies include an impeller with asymmetric design. For example, an impeller may include a first set of blades with one geometry and second set of fan blades with another geometry. This enables a dual-inlet centrifugal fan to generate different air flow performance characteristics for the air entering one fan inlet compared to the air entering the other fan inlet. The impeller, with different fan blade configurations, can better handle air flow entering the fan assembly through different inlets, particularly when the air flow conditions differ through the inlets due to impeding structures (e.g., motor, struts, etc.). As a result, air flow distribution from air leaving the impeller, including the locations associated with the different fan blade configurations, is relatively uniform. Beneficially, when air flow distribution uniformity increases, the fan assembly operates more efficiently, as air flow pressure losses due to flow separation are mitigated. 1. An electronic device , comprising:a housing that defines an internal volume; and a first impeller blade having a first blade geometry,', 'a second impeller blade having a second blade geometry different from the first blade geometry, and', 'a separating structure that separates the first impeller blade from the second impeller blade., 'an impeller comprising, 'a fan assembly located in the internal volume, the fan assembly comprising2. The electronic device of claim 1 , wherein:the separating structure comprises a disc that comprises a first surface and a second surface opposite the first surface,the first impeller blade is located on the first surface, and the second impeller blade is located on the second surface.3. The electronic device of claim 2 , wherein the disc comprises an edge that defines an outer diameter claim 2 , and the first impeller blade and the second impeller blade extend to the edge.4. The electronic device of claim 1 , wherein:the first blade geometry ...

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Номер записи: 84
21-08-2014 дата публикации

Fan Impeller with Multiple Blades Shaped and Disposed to Provide High Air-Power Efficiency

Номер: US20140233178A1
Автор: John Franz
Принадлежит: Hewlett Packard Development Co LP

A fan impeller with multiple blades shaped and disposed to provide high air-power efficiency. The fan impeller includes a hub, a first plurality of primary blades and a second plurality of secondary blades. The leading edge of the first secondary blade is disposed proximately to the trailing edge of the first primary blade. A leading edge portion of the first secondary blade is also disposed in an inter-blade space between the first primary blade and a second primary blade. A trailing edge portion of the first secondary blade is disposed outside of the inter-blade space and towards a bottom of the hub. A cooling fan including the fan impeller, and an electrical apparatus including the cooling fan that includes the fan impeller are also provided.

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Номер записи: 85
16-05-2019 дата публикации

Blower assembly for use in an air handling system and method for assembling the same

Номер: US20190145657A1
Автор: Joseph A. Henry, Sahand Pirouzpanah
Принадлежит: Regal Beloit America Inc

A blower assembly includes a housing including an inner shell and an outer shell that define a flow passage therebetween. The inner shell also at least partially defines a cavity. The blower assembly also includes a fan coupled within the housing such that the fan also at least partially defines the cavity. The blower assembly further includes a motor configured to rotate about an axis. The motor is coupled to the inner shell and is positioned within the cavity radially inward of the flow passage.

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Номер записи: 86
31-05-2018 дата публикации

CENTRIFUGAL BLOWER

Номер: US20180149158A1
Автор: ISHII Fumiya, ODA Shuzo, Yasuda Masanori
Принадлежит:

The inside of a blower casing of a centrifugal blower includes a discharge airflow path, which extends outward in a radial direction of a rotating shaft, on an airflow downstream side from a trailing edge of each of blades of a centrifugal fan. The discharge airflow path includes an adjacent airflow path adjacent to the trailing edge of each blade. When the length in the axial direction of the blade at the trailing edge is assumed to be blade height, and when the length in the axial direction at the trailing edge of the centrifugal fan is assumed to be fan height, the length in the axial direction of the adjacent airflow path is equal to or larger than the blade height and equal to or smaller than the fan height. 110.-. (canceled)11. A centrifugal blower for blowing air , comprising:a centrifugal fan that sucks air from one side of a rotating shaft in its axial direction and discharges the air radially outward of the rotating shaft; anda blower casing that accommodates the centrifugal fan and opens along an entire circumference of the blower casing around the rotating shaft, wherein: a plurality of blades arranged side by side in a circumferential direction of the rotating shaft;', 'a shroud that connects together one sides of the plurality of blades in the axial direction; and', 'a main plate that connects together the other sides of the plurality of blades in the axial direction and is connected to the rotating shaft;, 'the centrifugal fan includesthe blower casing includes therein a discharge airflow path, which extends radially outward of the rotating shaft, on an airflow downstream side of a trailing edge of each of the plurality of blades;the discharge airflow path includes an adjacent airflow path adjacent to the trailing edge of each of the plurality of blades; and a length of the trailing edge of each of the plurality of blades in the axial direction is a blade height; and', 'a length of the centrifugal fan at the trailing edge in the axial direction is a ...

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Номер записи: 87
09-06-2016 дата публикации

AIRFOIL FOR INLET GUIDE VANE (IGV) OF MULTISTAGE COMPRESSOR

Номер: US20160160874A1
Автор: Clark Tristan William, Lamicq Olivier J.L.
Принадлежит: Solar Turbines Incorporated

A vane for an Inlet Guide Vane (IGV) of a multistage compressor includes a root portion, a tip portion, and an airfoil extending therebetween. The vane is configured such that a ratio of the maximum thickness of the airfoil to a chord length (T/C) at 50% of the span height (H) taken from the tip portion of the vane is configured to lie in the range of 0.11 to 0.12. In addition to the ratio (T/C) at 50% of the span height (H) being in range of 0.11 to 0.12, a ratio of the maximum thickness to the chord length (T/C) at various points along the airfoil varies with span height (H) of the vane i.e., distance taken from the tip portion of the vane and the local chord length C present at that span height H of the vane taken from the tip portion. 1. A vane for an Inlet Guide Vane (IGV) of a multistage compressor , the vane comprising:a root portion;a tip portion located distally from the root portion with a span height (H) defined therebetween; and{'sub': 'max', 'an airfoil extending longitudinally between the root portion and the tip portion, wherein a ratio of the maximum thickness of the airfoil to the chord length (T/C) at 50% of the span height (H) taken from the tip portion of the vane is configured to lie in the range of 0.11 to 0.12.'}2. The vane of further including a leading edge and a trailing edge transversely disposed at opposing ends of the root portion claim 1 , the tip portion claim 1 , and the airfoil claim 1 , wherein the leading edge and the trailing edge are separated by the chord length (C) defined therebetween.3. The vane of claim 1 , wherein a ratio of the maximum thickness of the airfoil to the chord length (T/C) at the tip portion is configured to lie in the range of 0.09 to 0.10.4. The vane of claim 2 , wherein a ratio of the maximum thickness of the airfoil to the chord length (T/C) is configured to lie in the range of 0.09 to 0.10 at:10% of the span height (H) taken from the tip portion of the vane;40% of the span height (H) taken from the root ...

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Номер записи: 88
23-05-2019 дата публикации

Mixed-flow fan

Номер: US20190154042A1
Автор: Chao-Fu YANG, Shih-Di CHEN, Shun-Chen Chang
Принадлежит: Delta Electronics Inc

A mixed flow fan includes a bottom base, an outer cover disposed on the bottom base, a motor disposed on the base, and a hub located between the outer case and the motor. The hub includes a first outer surface and a second outer surface connected to the first outer surface and inclined relative to the first outer surface. The slope of the first outer surface relative to the central axis is greater than the slope of the second outer surface relative to the central axis. The base includes a side surface adjacent to the second outer surface. The slope of the side surface relative to the central axis is equal to the slope of the second outer surface relative to the central axis.

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Номер записи: 89
08-06-2017 дата публикации

CENTRIFUGAL FAN

Номер: US20170159662A1
Автор: TERAMOTO Takuya, Teshima Hiroyoshi
Принадлежит:

A centrifugal fan may include an impeller arranged to rotate about a rotation axis, an impeller case arranged to accommodate the impeller, a motor arranged to rotate the impeller, and a motor case arranged to accommodate the motor. The impeller may include a boss portion joined to a shaft arranged to rotate about the rotation axis, a hub arranged to extend radially outward from the boss portion, and a plurality of blades. Each blade may be arranged to extend radially outward. An inner wall of the impeller case may include an inside surface extending radially outward along an upper end portion of each blade. A side end portion of an air inlet defined in a central portion of the impeller case may include a curved surface projecting radially inward. 1. A centrifugal fan comprising:an impeller arranged to rotate about a rotation axis;an impeller case arranged to accommodate the impeller;a motor arranged to rotate the impeller; and [ a boss portion joined to a shaft arranged to rotate about the rotation axis;', 'a hub arranged to extend radially outward from an outer circumferential surface of the boss portion; and', 'a plurality of blades arranged on an upper surface of the hub;, 'the impeller comprises, 'each blade is arranged to extend radially outward away from the rotation axis;', 'an inner wall of the impeller case is arranged to cover the blades, and comprises an inside surface extending radially outward along an upper end portion of each blade;', 'the impeller case comprises an air inlet defined in a central portion thereof, with a side end portion of the air inlet comprising a curved surface projecting radially inward; and', 'the each blade has an axially upper end projecting upward and positioned radially outward of a radially innermost end of the curved surface of the air inlet; and', 'a distance between the each blade and the inside surface of the impeller case is arranged to be shortest at the axially upper end of the each blade., 'a motor case joined to the ...

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Номер записи: 90
24-06-2021 дата публикации

Humidification and air cleaning apparatus

Номер: US20210190345A1
Автор: Jaehyuk Jung, Seokho Choi, Seungdeok YANG
Принадлежит: LG ELECTRONICS INC

A humidification and air cleaning apparatus is provided, in which a wave having a predetermined cycle is formed on a plurality of blades of a blower fan, such that operating noise caused by a flow of discharged air may be minimized, and a wave is formed at a trailing edge, such that a phase difference may be formed for air to be separated, and air flow noise of the discharged air may be reduced.

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Номер записи: 91
29-09-2022 дата публикации

Fan unit for a ventilator

Номер: US20220305224A1
Автор: Angela Gerlach
Принадлежит: Loewenstein Medical Technology SA

Fan unit for a ventilator, comprising a housing with a suction connector which forms an inlet duct for the suction-side inflow of a fluid into the housing, a pressure connector which forms an outlet duct for the pressure-side outflow of the fluid from the housing, and a fan impeller mounted rotatably in the housing and being configured, by rotation, to suck in the fluid via the suction connector and to convey it through the inlet duct into the housing, and to eject the fluid again via the pressure connector and to convey it through the outlet duct out of the housing. The suction connector has at least one flow guiding element on its inner face which faces the inlet duct and defines an inlet duct nominal diameter, by which element an inlet duct internal diameter differing at least in sections from the inlet duct nominal diameter is set.

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Номер записи: 92
21-05-2020 дата публикации

CROSS-FLOW WIND TURBINE, AND FAN HEATER

Номер: US20200158137A1
Автор: MA Lie, TAN Chengbo, Wang Qing
Принадлежит:

Disclosed are a cross-flow wind turbine and a fan heater applying the cross-flow wind turbine, in which the cross-flow wind turbine includes two fixing plates oppositely disposed and a plurality of blades connected between the two fixing plates, the plurality of blades being disposed at intervals along an outer edge of the fixing plate, and the blades are disposed twisted along an axial direction of the cross-flow wind turbine, and a relative twisting angle at both ends of one of the blades is no less than 5° and no more than 40°. 1. A cross-flow wind turbine applied to a fan heater , comprising:two fixing plates disposed opposite to each other, anda plurality of blades connected between the two fixing plates, the plurality of blades being disposed at intervals along an outer edge of each fixing plate,wherein the plurality of blades are twisted along an axial direction of the cross-flow wind turbine, and a relative twisting angle at a first and second end of one of the plurality of blades is between 5° and 40°.2. The cross-flow wind turbine of claim 1 ,wherein the plurality of blades are obliquely disposed between the two fixing plates along the axial direction of the cross-flow wind turbine, andwherein an inclined angle θ formed between one of the plurality of blades and one of the fixing plates, is no less than 85° and no more than 88°.3. The cross-flow wind turbine of claim 1 ,wherein a cross section of one of the plurality of blades has an arc shape with a chord length 6 mm to 8 mm.4. The cross-flow wind turbine of claim 3 ,wherein a wheel diameter ratio d/D of a cross-flow wind turbine ranges from 0.7 to 0.85.5. The cross-flow wind turbine of claim 1 ,wherein a thickness of one of the plurality of blades ranges from 0.3 mm to 0.5 mm.6. The cross-flow wind turbine of claim 1 ,wherein an outer diameter D of a cross-flow wind turbine ranges from 30 mm to 100 mm, andwherein a length of the cross-flow wind turbine ranges from 150 mm to 600 mm.7. The cross-flow wind ...

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Номер записи: 93
01-07-2021 дата публикации

PROPELLER FAN

Номер: US20210199122A1
Автор: FUNADA Kazuya, SAWADA Hirotaka
Принадлежит: FUJITSU GENERAL LIMITED

A propeller fan includes a hub and a plurality of blades, wherein the blade has a plurality of blade elements branching on a way from an outer peripheral portion to an inner peripheral portion, the plurality of blade elements form a hole which is a flow path for airflow, between the adjacent blade elements, have a first blade element on an upstream side and a second blade element on a downstream side to be adjacent to the first blade element which branch at a branch point, and include an extension portion as a part of the first blade element, on a trailing edge of the first blade element from the branch point to a side surface of the hub, and at least a part of a leading edge of the second blade element overlaps with a rotation orbit of the extension portion with a central axis as a rotation center. 1. A propeller fan comprising:a hub having a side surface around a central axis; anda plurality of blades provided to the side surface,wherein the blade has, in a portion from a base connected to the hub to an outer periphery, an inner peripheral portion positioned on the base side and an outer peripheral portion positioned on the outer peripheral side, and has a plurality of blade elements branching on a way from the outer peripheral portion to the inner peripheral portion,the plurality of blade elements have a trailing edge on a downstream side of rotation with the central axis as a rotation center, and a leading edge on an upstream side of the rotation, are connected to the side surface at a pitch angle with respect to the central axis, and form a hole which is a flow path for airflow, between the adjacent blade elements,the plurality of blade elements have a first blade element on the upstream side of the rotation and a second blade element on the downstream side of the rotation to be adjacent to the first blade element which branch at a branch point on the way from the outer peripheral portion to the inner peripheral portion, and include an extension portion as a ...

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Номер записи: 94
23-06-2016 дата публикации

Ring fan and shroud air guide system

Номер: US20160177967A9
Автор: James W. Bailey, Jonathan B. Stagg
Принадлежит: Individual

A ring fan and shroud guide system which includes a rotating fan member with a conical outer ring and a cylindrical shroud member overlapping at least a portion of the outer ring. A plurality of guide vanes are provided in the shroud which minimize the tangential velocity component of the air flow entering the tip-gap region and provide improved air flow through the system. The guide vanes can have a curved configuration.

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Номер записи: 95
21-06-2018 дата публикации

HVAC SYSTEM

Номер: US20180170146A1
Автор: Hoyle Richard, Wright Wayne
Принадлежит:

An HVAC system according to an example of the present disclosure includes a blower rotatable about an axis that has a first axial end and a second axial end opposite the first axial end. A hub is positioned to divide the blower into a first section for receiving a first fluid flow and a second section for receiving a second fluid flow fluidly isolated from the first fluid flow. The blower is configured to receive the first and second fluid flows in through the first axial end 1. An HVAC system comprising:a blower rotatable about an axis and having a first axial end and a second axial end opposite the first axial end; anda hub positioned to divide the blower into a first section for receiving a first fluid flow and a second section for receiving a second fluid flow fluidly isolated from the first fluid flow, the blower configured to receive the first and second fluid flows in through the first axial end.2. The HVAC system as recited in claim 1 , wherein the first fluid flow is outside air claim 1 , and the second fluid flow is inside air from a vehicle passenger compartment.3. The HVAC system as recited in claim 1 , wherein the blower is configured to pass the first fluid flow and the second fluid flow out of the blower in a radially outward direction.4. The HVAC system as recited in claim 1 , comprising:a second hub having a radially outer surface configured to guide the second fluid flow.5. The HVAC system as recited in claim 4 , comprising:a motor;a shaft driven by the motor, wherein the second hub is configured to fluidly separate the second airflow from the motor and the shaft.6. The HVAC system as recited in claim 4 , wherein the second hub is generally bell- shaped.7. The HVAC system as recited in claim 1 , wherein the hub extends radially outward as it extends from the first axial end toward the second axial end.8. The HVAC system as recited in claim 1 , wherein the first fluid flow is received across a first surface of the hub claim 1 , and the second fluid ...

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Номер записи: 96
18-09-2014 дата публикации

CENTRIFUGAL COMPRESSORS AND METHODS OF DESIGNING DIFFUSER VANES FOR THE SAME

Номер: US20140271170A1
Автор: Holbrook Greg
Принадлежит: HONEYWELL INTERNATIONAL INC.

Centrifugal compressors, methods of forming centrifugal compressors, and methods of designing diffuser vanes in centrifugal compressors are provided herein. In an embodiment, a method of designing diffuser vanes includes providing an initial two-dimensional diffuser vane layout including initial diffuser vane peripheries radially spaced about an axis. The initial diffuser vane peripheries are rotated using a computer processor to produce rotated diffuser vane peripheries having offset trailing ends relative to the initial diffuser vane peripheries. The rotated diffuser vane peripheries are circumferentially shifted about the axis to produce shifted diffuser vane peripheries. Leading ends of the shifted diffuser vane peripheries are offset from the leading ends of the initial diffuser vane peripheries. Diffuser vane surfaces are generated that connect the shifted diffuser vane peripheries to the corresponding initial diffuser vane peripheries to form diffuser vanes in a twisted configuration. 1. A method of designing diffuser vanes in a centrifugal compressor comprising a diffuser and an impeller concentrically rotatable relative to the diffuser about an axis , the method comprising:providing an initial two-dimensional diffuser vane layout including initial diffuser vane peripheries radially spaced about the axis;rotating the initial diffuser vane peripheries using a computer processor to produce rotated diffuser vane peripheries having offset trailing ends relative to trailing ends of the initial diffuser vane peripheries;circumferentially shifting the rotated diffuser vane peripheries about the axis using the computer processor to produce shifted diffuser vane peripheries, wherein leading ends of the shifted diffuser vane peripheries are offset from the leading ends of the initial diffuser vane peripheries;generating diffuser vane surfaces connecting the shifted diffuser vane peripheries to the corresponding initial diffuser vane peripheries using the computer ...

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Номер записи: 97
28-06-2018 дата публикации

IMPELLER WITH INCLINED AND REVERSE INCLINED BLADES

Номер: US20180180062A1
Автор: Kenyon Barton John
Принадлежит:

An impeller for use in a centrifugal blower, the impeller includes a hub defining an axis of rotation for the impeller; a plurality of inclined blades, the plurality of inclined blades extending away from the hub; and a plurality of reverse inclined blades, the plurality of reverse inclined blades extending away from the hub. Each of the plurality of inclined blades are joined to an adjacent inclined blade at least in part by a reverse inclined blade. 1. An impeller for use in a centrifugal blower , the impeller comprising:a hub defining an axis of rotation for the impeller;a plurality of inclined blades, the plurality of inclined blades extending away from the hub; anda plurality of reverse inclined blades, the plurality of reverse inclined blades extending away from the hub,wherein each of the plurality of inclined blades are joined to an adjacent inclined blade at least in part by a reverse inclined blade.2. The impeller according to claim 1 , wherein each of the plurality of inclined blades forms a substantially V-shaped cross-section with the adjacent reverse inclined blade.3. The impeller according to any one of and claim 1 , wherein the plurality of inclined blades and the plurality of reverse inclined blades are connected together in a continuous manner at a circumference of the impeller that is radially outward from the hub.4. The impeller according to claim 3 , further comprising a plurality of flat sectors that that are each substantially perpendicular to the axis of rotation claim 3 , wherein a portion of the sectors are at the circumference.5. The impeller according to any one of to claim 3 , wherein each of the plurality of inclined blades and each of the plurality of reverse inclined blades provide a flow path in a direction from the hub towards an outer perimeter of the impeller.6. The impeller according to claim 5 , wherein the flow path extends to the outer perimeter.7. The impeller according to any one of to claim 5 , wherein the plurality of ...

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Номер записи: 98
09-07-2015 дата публикации

CENTRIFUGAL MULTI-BLADE BLOWER

Номер: US20150192143A1
Автор: Imahigashi Shouichi, Sakai Masaharu
Принадлежит:

A centrifugal multi-blade blower includes an impeller, and a casing that accommodates the impeller, and draws in air at least from an inlet port of the casing which opens on one end side of a rotation shaft and blows out the air radially outward of the rotation shaft. The impeller includes a main plate that is joined to the rotation shaft, vanes which are arranged around the axis of the rotation shaft and the other end sides of which in the rotation axis direction are connected to the main plate, and a side plate that connects together the vanes on their one end sides in the rotation axis direction. The vanes are characterized in that an inlet angle on a cross-sectional surface crossing each inner peripheral edge part of the vanes on a meridian plane of the impeller in a predetermined direction is evenly made in the entire region from the side plate-side through the main plate-side, and that outer peripheral edge parts of the vanes are configured to be away from the axis of the rotation shaft from the main plate-side toward the side plate-side. 1. A centrifugal multi-blade blower comprising:a rotation shaft;an impeller that rotates with the rotation shaft as a center of the rotation and includes:a main plate that is coupled with the rotation shaft;a plurality of vanes that are arranged around an axis of the rotation shaft; anda side plate that connects together the plurality of vanes on one end side of the rotation shaft; anda casing that accommodates the impeller and includes an inlet port which opens at least on the one end side of the rotation shaft, wherein:the blower draws in air through the inlet port and blows out the air radially outward of the rotation shaft;the plurality of vanes on the other end side of the rotation shaft are connected to the main plate;the plurality of vanes are configured such that an inlet angle on a cross-sectional surface crossing each inner peripheral edge part of the plurality of vanes on a meridian plane of the impeller in a ...

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Номер записи: 99
29-06-2017 дата публикации

Impeller And Pump Using The Impeller

Номер: US20170184116A1
Автор: Fang Chuan Hui, GUO Chuan Jiang, ZHANG Xiao Liang
Принадлежит:

An impeller includes a back cover plate, and vanes and a hub disposed on the back cover plate. The impeller further includes a sealing ring disposed on one end of the impeller away from the back cover plate. A pump using the impeller includes a volute housing and a driving device. The volute housing includes a diffusor chamber, an inlet pipe and an outlet pipe. The impeller is rotatably received in the diffusor chamber and connected to the driving device. A baffle portion is disposed on an end wall in the diffusor chamber adjacent the inlet pipe. The baffle portion engages with the sealing ring to prevent back flow of the fluid. The pump has enhanced fluid delivery efficiency. The back cover plate may further define arc strip-shaped balance holes for reducing an axial force applied to the impeller, such that rotation of the impeller is more stable. 1. An impeller comprising:a back cover plate,a plurality of vanes disposed on the back cover plate;a hub disposed on the back cover plate; anda sealing ring connected to each of the vanes and disposed on ends of the vanes away from the back cover plate.2. The impeller of claim 1 , wherein the back cover plate defines a recess in one side of the back cover plate claim 1 , and the hub is disposed in the recess of the back cover plate.3. The impeller of claim 1 , wherein the back cover plate further defines a plurality of balance holes.4. The impeller of claim 3 , wherein the number of the balance holes is equal to the number of the vanes.5. The impeller of claim 4 , wherein the plurality of balance holes is arranged into a ring in the back cover plate claim 4 , and each of the vanes is disposed between two adjacent balance holes.6. The impeller of claim 5 , wherein the back cover plate further defines a plurality of through holes arranged into a ring claim 5 , and the plurality of through holes are spaced from each other and evenly distributed in an annular area cooperatively bounded by the balance holes and the hub.7. The ...

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Номер записи: 100