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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5495. 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

Cross flow fan, air blower and air conditioner

Номер: US20120263573A1
Автор: Takahide Tadokoro, Takashi Ikeda
Принадлежит: Mitsubishi Electric Corp

There is provided a cross flow fan that makes uniform a distribution of wind velocity along an axial direction of the fan at an exit of an air trunk and that lessens chance of separation of an air flow on an inlet side of the fan, and there are thereby provided a cross flow fan that accomplishes a lower input and smaller noise and an air blower and an air conditioner that use the cross flow fan. A cross flow fan being rotatably placed in a horizontally-long air trunk, and including a plurality of annular rings that are substantially parallel to each other and a plurality of blades that are radially interposed between adjacent rings, each having a circular arc cross sectional shape, and a camber angle of the blade is smaller at the ring side than at a center area of the blade between the rings in a longitudinal direction.

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Номер записи: 4
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: 5
10-01-2013 дата публикации

Fan

Номер: US20130011255A1
Автор: Alex Horng, Ko-Chien Wang
Принадлежит: Sunonwealth Electric Machine Industry Co Ltd

A fan includes a housing and a motor. The housing has a compartment, at least one lateral air inlet and at least one lateral air outlet. The lateral air inlet and lateral air outlet communicate with the compartment. The motor has a stator and an impeller. The impeller is coupled with the stator and includes a hub and a plurality of blades coupled with a top face of the hub. Each blade has first and second ends. The first ends of the blades face outwards, and the second ends of the blades define an air-guiding room encompassed by a virtual geometric pattern formed by a virtual line linking the second ends of the blades. The virtual geometric pattern has a maximal diameter. A gap is formed between the second ends of two adjacent blades. The gap is smaller than the maximal diameter of the virtual geometric pattern.

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Номер записи: 6
31-01-2013 дата публикации

Axial-radial turbomachine

Номер: US20130028724A1
Автор: Arno Richter, Christoph Lange
Принадлежит: MAN Diesel and Turbo SE

Axial-radial flow machine having an axial portion with at least one axial stage, a radial portion with at least one radial stage, a housing having an interior space with a dividing wall extending in a radial direction dividing the housing in an axial direction into a first partial space in which the axial portion is received and a second partial space in which the radial portion is received, and a shaft that extends in axial direction through the interior space and through the dividing wall and on which impellers of the axial portion and of the radial portion are received. A radial gap is formed between the dividing wall and a fluid guiding element of the radial portion. The fluid guiding element is axially fixed to the housing so as to be adjacent to the dividing wall. A plurality of fixing units which are distributed in circumferential direction are arranged in the radial gap, each of which fixing units axially fixes the dividing wall to the fluid guiding element.

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Номер записи: 7
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: 8
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: 9
11-07-2013 дата публикации

CROSS FLOW FAN AND AIR-CONDITIONING APPARATUS INCLUDING SAME

Номер: US20130177395A1
Автор: HAMADA Shingo, Ikeda Takashi, SHIROTA Mitsuhiro, Tadokoro Takahide
Принадлежит: Mitsubishi Electric Corporation

A cross flow fan including an impeller having at least two rings arranged with intervals in a fan rotation axis O direction and a plurality of blades that are arranged, between correlated rings, with intervals in a circumferential direction of the rings, in which the blade is divided into plural areas in the fan rotation axis O direction, and both ends adjacent to the rings are denoted as the blade-ring proximate sections and the center portion of the blade is denoted as the inter-blade-ring center section. The blade is formed such that the thickness of the inner peripheral blade end of the blade that is the inner peripheral end of the impeller is smaller in the inter-blade-ring center section than in the blade-ring proximate section. 111-. (canceled)12. A cross flow fan , comprising: at least two support plates arranged with intervals in a rotation axis direction, and', 'a plurality of blades arranged between correlated support plates, the blades being arranged with intervals in a circumferential direction of the support plates, wherein, 'an impeller including,'}each blade between the support plates is divided into a plurality of areas in the rotation axis direction such that both ends adjacent to the support plates are a first area and a center portion of the blade is a second area,a thickness of the blade in the second area is formed so as to become gradually thinner to an inner peripheral blade end that is an end of the blade on an inner-circumferential side of the impeller, andthe thickness of the inner peripheral blade end is formed such that the second area is smaller in thickness than the first area.13. The cross flow fan of claim 12 , wherein the thickness of the blade in the first area is formed so as to become gradually thicker from an outer peripheral blade end that is an end of the blade on an outer-circumferential side of the impeller to the inner peripheral blade end.14. The cross flow fan of claim 12 , wherein claim 12 ,after the thickness of the ...

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Номер записи: 10
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: 11
26-09-2013 дата публикации

Diffusion Type Fan Device

Номер: US20130251521A1
Автор: Che-Wei Kan
Принадлежит: Individual

A fan device includes a primary blade unit, a guiding member, and a secondary blade unit. The primary blade unit includes a mounting seat having a plurality of flow channels, and a primary blade rotatably mounted in the mounting seat and having a plurality of ventilating holes that are movable to align with the flow channels. The guiding member has a plurality of flow guiding ducts aligning with the flow channels. The guiding member has a flow guiding surface. The secondary blade unit includes a plurality of mounting plates having a vent hole for mounting a plurality of secondary blades. Thus, when the ambient air flow is introduced into the fan device, the primary blade unit and the secondary blade unit guide and inject the air flow in two different directions to diffuse and spread the air flow.

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Номер записи: 12
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: 13
03-10-2013 дата публикации

Cross flow fan and indoor unit of air-conditioning apparatus

Номер: US20130259669A1
Автор: Mitsuhiro Shirota, Shingo Hamada, Takahide Tadokoro, Takashi Ikeda
Принадлежит: Mitsubishi Electric Corp

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

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Номер записи: 14
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: 15
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: 16
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: 17
19-12-2013 дата публикации

CROSS FLOW FAN, AIR-SENDING DEVICE, AND AIR-CONDITIONING APPARATUS

Номер: US20130336788A1
Автор: Hirakawa Seiji, Ikeda Takashi, Tadokoro Takahide
Принадлежит: Mitsubishi Electric Corporation

A cross flow fan achieves low power input and low noise level by preventing flow separation on an air inlet side and reducing a maximum air velocity in the gap between the blades. At least one of units constituting a cross flow fan is an appearance unit configured such that when the unit is sequentially cut in a direction from one of rings to the other ring along a plane whose normal coincides with a rotation axis, a region S and a region C appear, the radius of a second circle, serving as an inner circumferencial circle (having a radius), in the region S being a first radius of predetermined length, the radius of the second circle, serving as the inner circumferencial circle, in the region C being a second radius shorter than the first radius. 113-. (canceled)14. A cross flow fan comprising two ring-shaped blade supporting members arranged at a predetermined distance from each other in an axial direction of a rotation axis of the blade supporting members; and', 'a plurality of blades arranged between the blade supporting members and at outer parts of the blade supporting members and positioned with an interval one another in a circumferential direction of the rotation axis,, 'at least one unit including'} the first radius regions each having a first radius that is a radius of an inner circumferential circle connecting inner circumferential ends of the blades in cross-section perpendicular to the axial direction, the first radius regions each extending continuously in the axial direction,', 'the second radius region having a second radius that is a radius of another inner circumferential circle connecting inner circumferential ends of the blades, the second radius region being different from the first radius and extending continuously in the axial direction,, 'wherein the blades have first radius regions and a second radius region,'}wherein the first radius regions are provided at both ends of the blades in the axial direction,wherein the second radius region is ...

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Номер записи: 18
19-12-2013 дата публикации

CROSS-FLOW FAN, MOLDING DIE, AND FLUID FEEDER

Номер: US20130336793A1
Автор: Ohtsuka Masaki, Shiraichi Yukishige
Принадлежит: SHARP KABUSHIKI KAISHA

A cross-flow fan includes a plurality of fan blades provided to be circumferentially spaced apart from each other. The fan blade has an inner edge portion arranged on the radially inner side to/from which air flows in/out, and an outer edge portion arranged on the radially outer side to/from which air flows in/out. Fan blade has a blade surface extending between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface arranged on the rotation direction side of the cross-flow fan and a suction surface arranged on the back side of the pressure surface. When cut along a plane orthogonal to the rotation axis of the cross-flow fan, the fan blade has a blade cross-sectional shape in which a concave portion concave from the pressure surface is formed. 1. A cross-flow fan comprising a plurality of vane portions provided to be circumferentially spaced apart from each other , each having an inner edge portion arranged on a radially inner side to/from which air flows in/out , and an outer edge portion arranged on a radially outer side to/from which air flows in/out , whereinsaid vane portion has a blade surface extending between said inner edge portion and said outer edge portion and including a pressure surface arranged on a rotation direction side of the cross-flow fan and a suction surface arranged on a back side of said pressure surface, andwhen cut along a plane orthogonal to a rotation axis of the cross-flow fan, said vane portion has a blade cross-sectional shape in which a concave portion concave from said pressure surface is formed.2. The cross-flow fan according to claim 1 , wherein when cut along the plane orthogonal to the rotation axis of the cross-flow fan claim 1 , said vane portion has a blade cross-sectional shape in which said concave portion is formed only at said pressure surface claim 1 , of said pressure surface and said suction surface.3. The cross-flow fan according to claim 1 , whereinsaid concave portion has a ...

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Номер записи: 19
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: 20
05-01-2017 дата публикации

BLADE OF CROSS-FLOW FAN

Номер: US20170002827A1
Автор: UDA Masafumi
Принадлежит:

A blade of a cross-flow fan including leading and trailing edge portions arranged on inner and outer peripheral sides of the cross-flow, and a base portion formed between the edge portions. The edge portions are arc shaped. The base portion has a pressure surface and a suction surface. A radius of the leading-edge portion is greater than a radius of the trailing-edge portion. A maximum thickness is at a position of maximum thickness that is closer to the leading-edge portion than to the trailing-edge portion. A first thickness is at an intermediate position on a blade chord. A second thickness is at a position set apart from an outer-peripheral end of the blade chord by 5% of the chord length. A value obtained by dividing the first thickness by the maximum thickness that is greater than a value obtained by dividing the second thickness by the first thickness. 1. A blade of a cross-flow fan comprising:a leading-edge portion arranged on an inner-peripheral side of the cross-flow fan, the leading-edge portion being formed in an arc shape;a trailing-edge portion arranged on an outer-peripheral side of the cross-flow fan, the trailing-edge portion being formed in an arc shape; and a pressure surface configured and arranged to generate positive pressure, and', 'a suction surface configured and arranged to generate negative pressure,, 'a base portion formed between the leading-edge portion and the trailing-edge portion, the base portion having'}the leading-edge portion and the trailing-edge portion being formed such that a radius of the leading-edge portion is greater than a radius of the trailing-edge portion, and a maximum thickness at a position of maximum thickness that is closer to the leading-edge portion than to the trailing-edge portion,', 'a first thickness at an intermediate position on a blade chord,', 'a second thickness at a position set apart from an outer-peripheral end of the blade chord by 5% of the chord length, and, 'the base portion being formed so as ...

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Номер записи: 21
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: 22
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: 23
04-01-2018 дата публикации

AIR CIRCULATOR WITH VEIN CONTROL SYSTEM

Номер: US20180003401A1
Автор: Cartwright Brian M., Ediger Glen W., HOLUB Timothy, Israel Gary, Pease Gregory
Принадлежит: VORNADO AIR, LLC

The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either he directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between. 1a blower; wherein the blower is vertically aligned; wherein the blower directs a laminar flow of air in a direction which is perpendicular to the vertical alignment of the blower;a mounting platform, wherein the mounting platform is secured above the blower; wherein the major axis of the mounting platform is aligned substantially parallel to the laminar flow of the air from the blower;a front post and a rear post secured to the mounting platform; wherein the front post and the and rear post are arranged along a line which is parallel to the laminar flow of the air from the blower;a cam system; wherein the cam system comprises a cam knob, a cam stem and a cam lobe;wherein the cam lobe is rotatably secured to the mounting platform; further wherein the cam knob is secured to the cam lobe by a vertically aligned cam stem;an air outlet portion, wherein the air outlet portion is comprised of a plurality of veins;wherein the veins are vertically aligned; wherein each of the veins is comprised of a plurality of upstream ribs and at least one downstream rib; wherein the upstream ribs and the at least one downstream rib are joined at a center axis; wherein the upstream ribs are aligned in a first direction; wherein the at least one downstream rib is aligned in a second direction which is offset from the first direction;wherein each of the plurality of veins further comprises at least one pivot pin; wherein the at least one ...

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Номер записи: 24
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: 25
07-01-2021 дата публикации

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

Номер: US20210003140A1
Автор: Hiroya Ito, Katsuyuki Yamamoto, Shingo Hamada, Takafumi Abe, Takahide Tadokoro, Takashi Ikeda, Takuya Teramoto, Yuki UGAJIN
Принадлежит: Mitsubishi Electric Corp

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

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Номер записи: 26
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: 27
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: 28
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: 29
09-01-2020 дата публикации

WIND WHEEL AND BLOWER COMPRISING THE SAME

Номер: US20200011343A1
Автор: LIN Yanhu, Lin Yong, XIAO Baixian, Zhang Miao
Принадлежит:

A wind wheel including a first air plate, a second air plate, and a plurality of blades disposed between the first air plate and the second air plate. The first air plate includes a central part and an air inlet disposed in the central part; each two adjacent blades form an air duct. The plurality of blades each includes an inlet section next to the air inlet, an intermediate section, and an outlet section. The thickness of the intermediate section is greater than the thickness of the inlet section and the thickness of the outlet section. 1. A wind wheel , comprising: a first air plate , a second air plate , and a plurality of blades disposed between the first air plate and the second air plate; the first air plate comprises a central part and an air inlet disposed in the central part;', 'each two adjacent blades form an air duct;', 'the plurality of blades each comprises an inlet section next to the air inlet, an intermediate section, and an outlet section; and', 'a thickness of the intermediate section is greater than a thickness of the inlet section and a thickness of the outlet section., 'wherein2. The wind wheel of claim 1 , wherein the intermediate section comprises a middle part and two ends; and the thickness of the intermediate section decreases from the middle part to the two ends.3. The wind wheel of claim 2 , wherein the inlet section comprises a first connecting end connected to the intermediate section and an innermost end next to the air inlet; and the thickness of the inlet section decreases from the first connecting end to the innermost end.4. The wind wheel of claim 3 , wherein the outlet section comprises a second connecting end connected to the intermediate section and an outermost end connected to the second connecting end; and the thickness of the outlet section decreases from the second connecting end to the outermost end.512. The wind wheel of claim 4 , wherein a profile of each of the plurality of blades is an arc; randomly select a point on ...

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Номер записи: 30
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: 31
03-02-2022 дата публикации

AIR INTAKE HOUSING AND BLOWER FOR A CORRESPONDING MOTOR VEHICLE HEATING, VENTILATION AND/OR AIR CONDITIONING DEVICE

Номер: US20220032727A1
Автор: Ailloud Fabrice, Barbier Thierry, Pierres Philippe
Принадлежит: VALEO SYSTEMES THERMIQUES

The invention relates to an air intake housing (), in particular for a heating, ventilation and/or air conditioning device, comprising: —at least two distinct air inlets (), and —air guiding members () configured to direct at least one air flow that is intended to be admitted into the air intake housing (). According to the invention, the air guiding members comprise at least three flaps (), one of these being a central flap () and two lateral flaps () arranged one on each side of the central flap (), said flaps () being positioned between the said two distinct air inlets () of the air intake housing () so as to be able to move about a single axis of pivoting (). The invention also relates to a suction blower () comprising such an air intake housing () and to a corresponding heating, ventilation and/or air conditioning device. 1. An air intake housing for a heating , ventilation and/or air conditioning device , comprising:at least two distinct air inlets extending over a width of the air intake housing; andair guiding members configured to direct at least one airflow configured to be admitted into the air intake housing,the air guiding members comprising at least three flaps, the at least three flaps comprising a central flap and two lateral flaps arranged on either side of the central flap, said flaps being arranged between said two distinct air inlets of the air intake housing, such as to be able to move about a single pivot axle,wherein the central flap extends over a portion) of said width of the air intake housing that is greater than the portion the width over which the two lateral flaps extend.2. The air intake housing as claimed in claim 1 , wherein said flaps are each arranged with the ability to move between a first extreme position claim 1 , in which said flap closes off a first air intake claim 1 , and a second extreme position claim 1 , in which said flap closes off the other air intake.3. The air intake housing as claimed in claim 1 , wherein said ...

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Номер записи: 32
03-02-2022 дата публикации

HEAT EXCHANGER MODULE FOR A MOTOR VEHICLE

Номер: US20220032767A1
Автор: Azzouz Kamel, Garnier Sebastien, Lissner Michael, Mammeri Amrid
Принадлежит: VALEO SYSTEMES THERMIQUES

The invention relates to a heat exchange module () for a motor vehicle, comprising: 1. A heat exchange module for a motor vehicle , comprising:a first heat exchanger having at least a first stage and a second stage, said first heat exchanger being configured such that the first stage and the second stage are in fluid connection within the same cooling circuit of the motor vehicle; anda ventilation device comprising at least one tangential fan for setting in motion an air flow configured to pass through at least the first heat exchanger,wherein the first and second stages of the first heat exchanger are arranged opposite each other, one behind the other with respect to the direction of flow of the air flow, so that the air set in motion by the tangential fan passes successively through the first stage and then through the second stage of the first heat exchanger.2. The heat exchange module as claimed in claim 1 , wherein the first stage and the second stage of the first heat exchanger are connected to each other by at least one fluid connection allowing the heat-transfer fluid to circulate in series from one stage to the other of the first heat exchanger.3. The heat exchange module as claimed in claim 1 , wherein the first stage and the second stage of the first heat exchanger are respectively connected to said cooling circuit via fluid connections allowing the heat-transfer fluid to circulate in parallel in the first stage and the second stage within said cooling circuit.4. The heat exchange module as claimed in claim 1 , wherein:the first stage comprises a first bundle of heat exchange ducts,the second stage comprises a second bundle of heat exchange ducts, andwherein said first heat exchanger comprises a common first header box placed at a first end of the first and second bundles of heat exchange ducts.5. The heat exchange module as claimed in claim 4 , wherein said first heat exchanger comprises a second common header box placed at a second end of the first and ...

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Номер записи: 33
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: 34
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: 35
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: 36
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: 37
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: 38
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: 39
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: 40
26-01-2017 дата публикации

TURBOCHARGER SYSTEMS WITH DIRECT TURBINE INTERFACES

Номер: US20170022993A1
Автор: Eckl Filip
Принадлежит: HONEYWELL INTERNATIONAL INC.

Turbine assemblies and related turbocharger systems having direct turbine interfaces are provided. One exemplary turbine assembly includes a first turbine housing having an outlet portion defining a fluid outlet of a first turbine and a second turbine housing having an inlet portion defining a fluid inlet of a second turbine, wherein at least a portion of the outlet portion radially surrounds at least a portion of the inlet portion to provide a direct interface from the fluid outlet of the first turbine to the fluid inlet of the second turbine in an axial direction. 1. A turbine assembly comprising:a first turbine housing having an outlet portion defining a fluid outlet of a first turbine; anda second turbine housing having an inlet portion defining a fluid inlet of a second turbine, wherein at least a portion of the outlet portion radially surrounds at least a portion of the inlet portion to provide a direct interface from the fluid outlet of the first turbine to the fluid inlet of the second turbine in an axial direction.2. The turbine assembly of claim 1 , wherein the first turbine comprises a radial turbine and the second turbine comprises an axial turbine.3. The turbine assembly of claim 2 , wherein rotational axes of the radial turbine and the axial turbine are concentrically aligned in the axial direction.4. The turbine assembly of claim 3 , further comprising a structure to provide a seal between the portion of the outlet portion and the second turbine housing.5. The turbine assembly of claim 2 , the first turbine housing having a second inlet portion defining a radial fluid inlet claim 2 , wherein a first dimension of the outlet portion extending towards the second turbine in the axial direction is less than a second dimension of the second inlet portion in the axial direction.6. The turbine assembly of claim 1 , wherein an inner surface of the portion of the outlet portion is adjacent to an outer surface of the portion of the inlet portion in a radial ...

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Номер записи: 41
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: 42
24-01-2019 дата публикации

Thermal caulking device

Номер: US20190022954A1
Автор: Hiroshi Ishikawa, Naohiro Ohtsu, Satoshi Shiozaki, Shigeto Akahori, Yoshinori Tsurugai, Yuichi Tajiri
Принадлежит: Honda Motor Co Ltd

The first electrode section ( 7 a ) and the second electrode section ( 7 b ) are formed such that the outer portion connected to the upper portion of the heating section ( 6 ) is thinner than the inner portion connected to the lower portion of the heating section ( 6 ). The heating section ( 6 ) and the first electrode section ( 7 a ) are interconnected by an R-shaped first connecting portion ( 21 ). The inner circumferential sloping surface of the heating section ( 6 ) and the second electrode section ( 7 b ) are interconnected by an R-shaped second connecting portion ( 22 ). The first and second connecting portions ( 21 )( 22 ) are formed such that R becomes larger from the upper end to the lower end, where the upper portion is thin and the lower portion is thick. The thickness of an intermediate portion ( 6 b ) is smaller than the thicknesses of the first and second connecting portions ( 21 )( 22 ).

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Номер записи: 43
25-01-2018 дата публикации

FAN ASSEMBLY

Номер: US20180023588A1
Автор: DUINEVELD Paulus Cornelis, MALTHA KRIJN, Van Der Kooi Johannes Tseard
Принадлежит:

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

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Номер записи: 44
25-01-2018 дата публикации

MULTI-DIRECTIONAL COOLING FAN

Номер: US20180023590A1
Автор: Song Binglu
Принадлежит:

A cooling fan extending vertically to define a longitudinal axis, the cooling fan configured to blow air and mist therefrom. The cooling fan includes a base and multiple stacked duct housings with a fan housing therebetween, each of the duct housing being rotatably coupled to each other. The base includes a water tank associated with an atomizer, an axial flow fan, and a misting tube, the misting tube extending upward from the atomizer along the axis through an air duct defined by the duct housings. Each of the duct housings include an air outlet and a misting outlet to independently disperse air and mist therefrom to be mixed upon exiting the cooling fan. With this arrangement, each one of the duct housings is rotatable about the longitudinal axis relative to an adjacent one of the multiple duct housings to provide directional misted air flow from multiple selected positions. 1. A cooling fan extending vertically to define a longitudinal axis , the cooling fan configured to blow air and mist therefrom , the cooling fan comprising:a base including a tank sized and configured to hold water, the tank including a misting tube, an atomizer, and an axial flow fan associated therewith;a fan housing rotatably coupled to the base, the fan housing defining an air inlet therein and including a fan coupled to the fan housing, the fan housing defining a base duct adjacent to the fan configured to facilitate upward air flow;a first duct housing coupled to the fan housing so as to facilitate the air flow from the base duct, the first duct housing positioned above the fan housing and including a first air outlet and a first misting outlet, the first air outlet communicating with the air flow flowing from the base duct, the first misting outlet communicating with the misting tube;a second duct housing rotatably coupled to the first duct housing so as to facilitate the air flow from the first duct housing, the second duct housing positioned above the first duct housing and including ...

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Номер записи: 45
10-02-2022 дата публикации

SYSTEM, APPARATUS, AND METHOD FOR PROVIDING A FLOW OF AIR

Номер: US20220042517A1
Автор: Lazar Eli Stewart, Snyder Matthew Melvin George
Принадлежит:

An apparatus is disclosed. The apparatus has a first housing having a first cavity, a second housing disposed in the first housing and including a second cavity and at least one aperture, a first fan assembly configured to generate a first airflow through the first housing, and a second fan assembly configured to generate a second airflow from the second cavity to the first cavity via the at least one aperture. 1. An apparatus , comprising:a first housing having a first cavity;a second housing disposed in the first housing and including a second cavity and at least one aperture;a first fan assembly configured to generate a first airflow through the first housing; anda second fan assembly configured to generate a second airflow from the second cavity to the first cavity via the at least one aperture.2. The apparatus of claim 1 , wherein the first fan assembly includes a first fan that rotates about a same axis as a second fan of the second fan assembly claim 1 , the first fan rotating in a first rotational direction that is opposite to a second rotational direction of the second fan.3. The apparatus of claim 1 , wherein the second fan assembly includes a second fan having a second diameter that is disposed within the second cavity of the second housing.4. The apparatus of claim 3 , wherein the first fan assembly includes a first fan having a first diameter that is greater than the second diameter.5. The apparatus of claim 1 , wherein the first fan assembly includes a first fan driven by a first shaft and the second fan assembly includes a second fan driven by a second shaft claim 1 , the first shaft and the second shaft being concentric shafts.6. The apparatus of claim 1 , wherein the second housing is one of a table fan housing supported by a stand or a ceiling fan housing supporting the second fan assembly that is a ceiling fan assembly.7. The apparatus of claim 1 , wherein a first step portion forming a first recess that faces away from the second cavity is ...

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Номер записи: 46
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: 47
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: 48
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: 49
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: 50
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: 51
17-02-2022 дата публикации

MIXED-FLOW COMPRESSOR WITH COUNTER-ROTATING DIFFUSER

Номер: US20220049717A1
Автор: Cousins William T., Halbe Chaitanya Vishwajit, Joly Michael M., Sishtla Vishnu M.
Принадлежит:

A compressor includes a housing. An impeller is located within the housing and rotatable about an impeller axis in a first rotational direction. A rotor section is rotatable about the impeller axis in a second rotational direction opposite the first rotational direction. 1. A compressor comprising:a housing;an impeller located within the housing and rotatable about an impeller axis in a first rotational direction; anda rotor section rotatable about the impeller axis in a second rotational direction opposite the first rotational direction.2. The compressor of claim 1 , wherein the rotor section includes a rotor having at least one row of rotor blades.3. The compressor of claim 1 , wherein the impeller includes a hub and a plurality of impeller blades extending outward from the hub toward a portion of the housing.4. The compressor of claim 3 , wherein the rotor section includes a cylindrical rotor with a plurality of rotor blades extending from a surface of the cylindrical rotor.5. The compressor of claim 4 , wherein the plurality of impeller blades each include an upstream end and downstream end with the upstream end being circumferentially spaced in the first rotational direction from the downstream end and the plurality of rotor blades each include an upstream end and a downstream end with the upstream end being circumferentially spaced in the second rotational direction from the downstream end.6. The compressor of claim 5 , wherein each of the plurality of rotor blades and each of the plurality of impeller blades include a curvature in the first circumferential direction.7. The compressor of claim 1 , wherein the impeller is driven by an impeller motor and the rotor is driven by a separate rotor motor.8. The compressor of claim 1 , wherein the impeller is driven by an impeller motor and the rotor section is driven by the impeller motor through a transmission to reverse a rotational output of the impeller motor.9. The compressor of claim 8 , wherein the ...

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Номер записи: 52
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: 53
05-02-2015 дата публикации

Fan Assembly and Method

Номер: US20150037154A1
Автор: Adamski Stephen A., Buckley Michael F., Hall Craig R., Menoni Dominic Phillip, Shelby Richard R.
Принадлежит:

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches. 1. A fan assembly comprising:a plurality of blades;an end ring connected to the plurality of blades;a hub ring connected to the plurality of blades, the hub ring having a split-ring configuration with ends of the hub ring rigidly fixed relative to one another; anda hub strip having a pair of end portions connected to the hub ring across a central opening of the hub ring from one another and a body portion intermediate the end portions.2. The fan assembly of further comprising another hub strip having end portions connected to the hub ring across the central opening from one another and a body portion intermediate the end portions.3. The fan assembly of wherein the hub ring and the end portions of the hub strip have generally flat configurations with the end portions overlapping the hub ring at the connections therebetween.4. The fan assembly of further comprising a hub connected to the body portion of the hub strip for connecting the hub strip to a motive source.5. The fan assembly of wherein the hub ring defines a plurality of slots sized to receive the plurality of blades.6. The fan assembly of further comprising another end ring connected to the plurality of blades claim 1 , the hub ring connected to the plurality of blades intermediate the end rings along the blades.7. A ...

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Номер записи: 54
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: 55
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: 56
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: 57
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: 58
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: 59
07-02-2019 дата публикации

HYDRAULIC ROTARY DRIVE

Номер: US20190040867A1
Автор: Chen Liang
Принадлежит:

A hydraulic rotary drive includes a stator and an impeller rotatably connected to the stator. The stator has a liquid chamber defining a liquid inlet, a liquid outlet, and a flow circuit extending between the liquid inlet and the liquid outlet. The impeller is rotatably has a plurality of butterfly blades positioned in the flow circuit, and a rotation axis. Each butterfly blade extends radially away from the rotation axis, and includes first and second wings that are rotatable relative to each other about a radial axis between an open position and a closed position. 1. A hydraulic rotary drive comprising:a stator having a liquid chamber defining a liquid inlet, a liquid outlet, and a flow circuit extending between the liquid inlet and the liquid outlet; andan impeller rotatably connected to the stator, the impeller having a plurality of butterfly blades positioned in the flow circuit, and a rotation axis,wherein each butterfly blade extends radially away from the rotation axis, and includes first and second wings that are rotatable relative to each other about a radial axis between an open position and a closed position.2. The hydraulic rotary drive of claim 1 , wherein:each of the first and second wings has a liquid drive surface,in the open position, the liquid drive surfaces of the first and second wings is oriented to promote energy exchange with liquid in the flow circuit, andin the closed position, the liquid drive surfaces of the first and second wings is oriented to inhibit energy exchange with liquid in the flow circuit.3. The hydraulic rotary drive of claim 1 , wherein:in the open position, each butterfly blade has a first height parallel to the rotation axis, andin the closed position, each butterfly blade has a second height parallel to the rotation axis and that is less than the first height.4. The hydraulic rotary drive of claim 3 , wherein:the second height is less than one quarter of the first height5. The hydraulic rotary drive of claim 1 , wherein: ...

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Номер записи: 60
07-02-2019 дата публикации

Fan Assembly and Method

Номер: US20190040869A1
Автор: Adamski Stephen A., Buckley Michael F., Hall Craig R., Menoni Dominic Phillip, Shelby Richard R.
Принадлежит:

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches. 1. A method of manufacturing a fan assembly , the method comprising:bending an elongated, flat member having a pair of straight edges into an annular configuration wherein the edges are annular;joining end portions of the annular member together to rigidly fix the annular member in a flat, annular configuration;connecting the flat, annular member to end portions of a plurality of curved blades; andconnecting a hub support to the curved blades at a position spaced from the annular member along the curved blades.2. The method of further comprising forming openings in the flat claim 1 , annular member; andconnecting the flat, annular member to the end portions of the curved blades includes advancing portions of the curved blades into the openings of the flat, annular member.3. The method of wherein bending the elongated claim 1 , flat member into the annular configuration includes bending the elongated claim 1 , flat member so that one of the edges is a radially inner edge having a first radius and the other of the edges is a radially outer edge having a second radius lager than the first radius.4. The method of wherein the elongated claim 1 , flat member has a length claim 1 , a width perpendicular to the length defined between the edges claim 1 , and a thickness perpendicular ...

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Номер записи: 61
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: 62
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: 63
18-02-2021 дата публикации

Low Profile Fan and Method of Using Same

Номер: US20210048030A1
Автор: Junkel Eric F., Weber Charles
Принадлежит:

A method includes providing a fan unit that has an elongate housing and supports that support the fan unit on a support surface. The elongate housing has an intake, a discharge, and a hollow interior in which a blower is rotatably disposed such that when the fan unit is energized, the blower draws air from the intake into the hollow interior and discharges air from hollow interior through the discharge. The intake has a length that extends in a direction parallel to a longitudinal axis of the housing. The discharge has a length that extends in a direction parallel to the longitudinal axis of the housing. A user is directed to place the fan unit on the support surface in a manner such that the fan is supported by the supports and the longitudinal axis of the housing is horizontal. 1. A method comprising:providing a fan unit, wherein the fan unit has an elongate housing and supports that are adapted and configured to support the fan unit on a support surface, the elongate housing has an intake, a discharge, and a hollow interior in which a blower is rotatably disposed such that when the fan unit is energized, the blower draws air from the intake into the hollow interior and discharges air from hollow interior through the discharge, the intake has a length that extends in a direction parallel to a longitudinal axis of the housing, the discharge has a length that extends in a direction parallel to the longitudinal axis of the housing; anddirecting a user to place the fan unit on the support surface in a manner such that the fan is supported by the supports and the longitudinal axis of the housing is horizontal.2. The method of wherein the step of directing the user to place the fan unit on the support surface includes directing the user to place the fan unit on a floor.3. The method of wherein the step of directing the user to place the fan unit on the floor comprises a bathroom floor.4. The method of wherein the step of directing the user to place the fan unit on the ...

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Номер записи: 64
15-02-2018 дата публикации

AIRCRAFT TAIL WITH CROSS-FLOW FAN SYSTEMS

Номер: US20180044010A1
Автор: Groninga Kirk L., Louis Matthew E., Robertson Daniel B.
Принадлежит: Bell Helicopter Textron Inc.

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

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Номер записи: 65
15-02-2018 дата публикации

Apparatus and method for directing thrust from tilting cross-flow fan wings on an aircraft

Номер: US20180044013A1
Автор: Daniel B. Robertson, Kirk L. Groninga, Matthew E. Louis
Принадлежит: BELL HELICOPTER TEXTRON INC

A variable thrust cross-flow fan system for an aircraft including a rotatable wing member having a first housing member; an actuator assembly operably coupled to the first housing member; and a variable thrust cross-flow fan assembly including a first and second driver plates having a plurality of blades rotatably mounted therebetween. The plurality of blades has a circular path of travel when rotating and includes a control assembly coupled to the plurality of blades to generate a variable thrust force. The control assembly includes a control cam that is substantially non-rotatable relative to the first and second driver plates and a hinge member that is fixedly connected to the control cam and to the first housing member at a hinge axis. Rotation of the first housing member by the actuator assembly imparts rotation of the control cam about the hinge axis, thereby changing the direction of the variable thrust force.

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Номер записи: 66
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: 67
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: 68
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: 69
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: 70
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: 71
23-02-2017 дата публикации

MULTI-BLADE FAN

Номер: US20170051760A1
Автор: UDA Masafumi
Принадлежит:

A multi-blade fan includes a support body rotatable about a rotary shaft, and a plurality of blades secured to the support body such that an inter-blade pitch angle relative to the rotary shaft assumes a prescribed arrangement. The blades extend along an axial direction of the rotary shaft. The plurality of blades are disposed such that, with respect to amplitude values of periodic functions at individual orders when the prescribed arrangement is expanded in a periodic Fourier series, a maximum amplitude value is less than 200% of a second-largest amplitude value. 1. A multi-blade fan comprising:a support body rotatable about a rotary shaft; anda plurality of blades secured to the support body such that an inter-blade pitch angle relative to the rotary shaft assumes a prescribed arrangement, the blades extending along an axial direction of the rotary shaft,the plurality of blades being disposed such that, with respect to amplitude values of periodic functions at individual orders when the prescribed arrangement is expanded in a periodic Fourier series, a maximum amplitude value is less than 200% of a second-largest amplitude value.2. The multi-blade fan according to claim 1 , whereinthe plurality of blades are disposed such that, with respect to the amplitude values of periodic functions at individual orders of the periodic Fourier series, the second-largest amplitude value is equal to or less than 100% of the maximum amplitude value and the third-largest amplitude value is within a range of 50-100% of the maximum amplitude value.3. The multi-blade fan according to claim 2 , whereinthe plurality of blades are disposed such that the amplitude values of periodic functions at a number of orders equal to or greater than one-third of a total number of orders of the periodic Fourier series are within a range of 50-100% of the maximum amplitude value.4. The multi-blade fan according to claim 3 , whereinthe plurality of blades are disposed such that the amplitude values of ...

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Номер записи: 72
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: 73
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: 74
03-03-2016 дата публикации

IMPELLER AND BLOWER

Номер: US20160061214A1
Автор: HAYAMITSU Ryosuke
Принадлежит:

An impeller is arranged to rotate about a central axis, and includes a disk-shaped portion arranged to extend radially with respect to the central axis, and a plurality of rotor blades arranged along a circumferential direction on one surface of the disk-shaped portion. Each rotor blade has one end arranged at an outer edge portion of the disk-shaped portion, and an opposite end arranged radially inward of the outer edge portion of the disk-shaped portion. The rotor blades include a plurality of first rotor blades each of which includes a first curvature portion and a plurality of second curvature portions. A center of the radius of curvature of the first curvature portion of each first rotor blade is arranged on a first side of the first rotor blade with respect to the circumferential direction. A center of the radius of curvature of each second curvature portion of each first rotor blade is arranged on a second side of the first rotor blade with respect to the circumferential direction. The first curvature portion is arranged radially inward of each second curvature portion. Regarding adjacent ones of the second curvature portions, the radius of curvature of the second curvature portion arranged radially outward is greater than the radius of curvature of the second curvature portion arranged radially inward. 1. An impeller arranged to rotate about a central axis , the impeller comprising:a disk-shaped portion arranged to extend radially with respect to the central axis; anda plurality of rotor blades arranged along a circumferential direction on one surface of the disk-shaped portion, each rotor blade having one end arranged at an outer edge portion of the disk-shaped portion, and an opposite end arranged radially inward of the outer edge portion of the disk-shaped portion; whereinthe rotor blades include a plurality of first rotor blades each of which includes a first curvature portion and a plurality of second curvature portions;a center of a radius of curvature ...

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Номер записи: 75
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: 76
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: 77
05-03-2015 дата публикации

FAN AND IMPELLER THEREOF

Номер: US20150064011A1
Автор: HSU WEN-CHUN, Lai Jiasheng, Xu Shiman
Принадлежит:

An impeller includes a fan frame, a hub, a plurality of axial blades and a plurality of wind guiding blades. The fan frame has a wind inlet, a wind outlet and an inner ring-shaped oblique surface, wherein the wind inlet is opposite to the wind outlet, and the inner ring-shaped oblique surface is formed at an inner side wall of the fan frame and adjacent to the wind inlet. The hub is disposed in the fan frame. The axial blades are connected to the inner side wall of the fan frame and the hub. The wind guiding blades protrude from the inner ring-shaped oblique surface. 1. An impeller comprising:a fan frame having a wind inlet, a wind outlet and an inner ring-shaped oblique surface, the wind inlet being opposite to the wind outlet, the inner ring-shaped oblique surface being formed at an inner side wall of the fan frame and adjacent to the wind inlet;a hub disposed in the fan frame;a plurality of axial blades connected to the inner side wall of the fan frame and the hub; anda plurality of wind guiding blades protruding from the inner ring-shaped oblique surface.2. The impeller of claim 1 , wherein an internal diameter of the fan frame along the inner ring-shaped oblique surface decreases gradually from the wind inlet to the wind outlet claim 1 , such that the wind outlet is smaller than the wind inlet.3. The impeller of claim 1 , wherein the axial blades and the wind guiding blades are arranged interlacedly.4. The impeller of claim 1 , further comprising a plurality of centrifugal blades connected to an outer side wall of the fan frame.5. The impeller of claim 1 , wherein each of the axial blades has a recess portion and the recess portion faces the wind outlet.6. A fan comprising:a stator; and a fan frame having a wind inlet, a wind outlet and an inner ring-shaped oblique surface, the wind inlet being opposite to the wind outlet, the inner ring-shaped oblique surface being formed at an inner side wall of the fan frame and adjacent to the wind inlet;', 'a hub disposed ...

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Номер записи: 78
04-03-2021 дата публикации

Impeller shroud with slidable coupling for clearance control in a centrifugal compressor

Номер: US20210062824A1
Автор: Jeffrey Crutchfield, Jonathan Acker, Mark Whitlock, Michael Nesteroff, Nate Cooper, Nathan Ottow
Принадлежит: Rolls Royce Corp, Rolls Royce North American Technologies Inc

A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a high pressure air source, an air piston mounted between an engine casing and the shroud and adapted to receive high pressure air from the high pressure air source, a mounting arm coupling the shroud and air piston, and a slidable coupling adapted to allow axial movement of the shroud and joining the shroud to an axial member.

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Номер записи: 79
27-02-2020 дата публикации

BLOWER APPARATUS AND AUTOMOTIVE AIR CONDITIONER

Номер: US20200062075A1
Автор: HIROSUE Satoshi, MORIYA Shigeyuki, OTSUKI Takaya, Saiki Yuji
Принадлежит:

A blower apparatus includes an impeller and a casing that accommodates the impeller. The casing includes an upper wall including an intake port, a lower wall, a side wall that includes an exhaust port, and a tongue portion connected to the upper wall. The side wall includes a first side wall, and a second side wall disposed downstream in a rotational direction of the impeller relative to the first side wall via the exhaust port. The tongue portion extends from the second side wall toward the first side wall, and includes a lower portion opposed to the lower wall. The lower portion includes a first lower portion on the base end side and a second lower portion on the tip side. A distance between the first lower portion and the lower wall is shorter than a distance between the second lower portion and the lower wall. 1. A blower apparatus comprising:an impeller rotatable about a center axis extending in an up-and-down direction;a motor to rotate the impeller; anda casing that accommodates the impeller; wherein an upper wall including an intake port that opens in an axial direction;', 'a lower wall opposed to the upper wall in the axial direction;', 'a side wall that connects the upper wall and the lower wall, and includes an exhaust port that opens in a cross direction crossing the axial direction; and', 'a tongue portion connected to the upper wall;, 'the casing includes a first side wall; and', 'a second side wall disposed downstream in a rotational direction of the impeller relative to the first side wall via the exhaust port;, 'the side wall includesthe tongue portion extends from the second side wall toward the first side wall, and includes a lower portion opposed to the lower wall;the lower portion includes a first lower portion on a base end side and a second lower portion on a tip side; anda distance between the first lower portion and the lower wall is shorter than a distance between the second lower portion and the lower wall.2. The blower apparatus according ...

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Номер записи: 80
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: 81
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: 82
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: 83
12-03-2015 дата публикации

FAN IMPELLER

Номер: US20150071782A1
Автор: BÄHREN Henning, HORNHARDT Christian, Wolf Matthias, XIA Yingan
Принадлежит:

A fan impeller for the conveyance of a gaseous fluid includes several blades arranged with constant angular spacing around a rotation axis. At least one blade has a boundary zone and an inner zone, together with a bead extending between them along a curved path and/or the boundary zone is determined by a first blade surface and the inner zone is determined by a second blade surface, which are arranged with varying geometry. 1. A fan impeller for conveying a gaseous fluid , comprising:first and second supports; anda plurality of blades having first and second axial end sections, each of the blades extending between the first and second supports and being respectively affixed to the first and second supports along the first and second axial end sections, the blades being arranged with a constant angular spacing in an annular space around a rotation axis;wherein at least one of the blades has a continuous boundary zone extending along a periphery of the blade and at least one inner zone surrounded by the boundary zone; andwherein: at least one bead lies between the boundary zone and the inner zone along a curved path having at least a portion that is substantially L-shaped; and/or the boundary zone and the inner zone respectively comprise first and second blade surfaces with differing geometries such that the first and second blade surfaces are offset from each other along at least a portion of a juncture therebetween.2. The fan impeller of claim 1 , wherein at least one of the first and second blade surfaces has a constant curvature in at least one cross-sectional plane.3. The fan impeller of claim 1 , wherein the boundary zone is frame-like and/or the curved path for the at least one bead is substantially U-shaped or continuous.4. The fan impeller of claim 3 , wherein at least one of the first and second blade surfaces has a constant curvature in at least one cross-sectional plane.5. The fan impeller of claim 3 , wherein the curvatures of the first and second blade ...

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Номер записи: 84
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: 85
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: 86
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: 87
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: 88
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: 89
16-03-2017 дата публикации

COUNTER-ROTATING COMPRESSOR

Номер: US20170074280A1
Автор: Vo Huu Doc
Принадлежит:

A compressor is described which includes a non-axial first rotor, and a second rotor disposed immediately downstream from the first rotor and being co-axial therewith about a longitudinal axis of rotation. The second rotor rotates in a direction opposite the non-axial first rotor to discharge fluid flow into an uninterrupted passage between an outlet of the second rotor and one of a downstream combustor or a further compression stage. The uninterrupted passage is free of a diffusing passage. A gas turbine engine including such a compressor and a method of compressing fluid flow is also described. 1. A compressor comprising: a non-axial first rotor; and a second rotor disposed immediately downstream from the first rotor and being co-axial therewith about a longitudinal axis of rotation , the second rotor rotating in a direction opposite the non-axial first rotor to discharge fluid flow into an uninterrupted passage between an outlet of the second rotor and one of a downstream combustor or a further compression stage , the uninterrupted passage being free of a diffusing passage.2. The compressor as defined in claim 1 , comprising an annular gap between rotor blades of the non-axial first rotor and rotor blades of the second rotor.3. The compressor as defined in claim 2 , comprising a curved fluid conduit located in the annular gap claim 2 , the curved fluid conduit turning fluid flow discharged from the rotor blades of the non-axial first rotor to reduce a radial direction flow component therefrom.4. The compressor as defined in claim 3 , wherein the rotor blades of the second rotor extend into the fluid conduit.5. The compressor as defined in claim 1 , wherein rotation of the second rotor turns fluid flow discharged from the non-axial first rotor in a substantially axial direction.6. The compressor as defined in claim 1 , wherein the non-axial first rotor rotates about the longitudinal axis at a first rotational speed and the second rotor rotates about the ...

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Номер записи: 90
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: 91
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: 92
12-06-2014 дата публикации

Accoustic Baffle For Centrifugal Blowers

Номер: US20140158463A1
Автор: Robert Glynn Wiegers, Scott Alan Sanborn
Принадлежит: Textron Innovations Inc

An acoustic baffle for reducing noise of a centrifugal fan includes a base for mounting with a fan outlet and a projection extending from the length of the base at a back side of the base and curving away from a top surface of the base. The projection continuously tapers from the base to an apex that aligns with a center line of the base. The projection extends over the fan wheel and tapers from left and right sides of the outlet to a fan tangency point at a midpoint of the outlet and aligned with the apex, when the acoustic baffle is installed in the outlet. The acoustic baffle effects a gradual variation in radial and tangential airflow at the blower outlet, to reduce fan blade passage tone.

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Номер записи: 93
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: 94
26-03-2015 дата публикации

EXHAUST-GAS TURBOCHARGER

Номер: US20150086341A1
Автор: Heidingsfelder Leif, Kanoffsky Nico
Принадлежит:

An exhaust-gas turbocharger () having a turbine () which is provided with a variable turbine geometry and/or with a wastegate; and having an actuator () which is connected to the variable turbine geometry and/or to the wastegate by means of a coupling rod () composed of plastic. The coupling rod () is connected, at its end regions, by means of a first eyelet () at one side to a pin () of the actuator () and by means of a second eyelet () at the other side to a pin () of an adjusting lever () of the variable turbine geometry and/or of the wastegate. The eyelets () of the coupling rod () are provided with in each case one metal sleeve ( and respectively). 213149. The exhaust-gas turbocharger as claimed in claim 1 , wherein the metal sleeves ( claim 1 , ) are cast at the edge into the plastics material of the coupling rod () by a process of encapsulation by injection molding.39. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod () is of rectilinear design.49. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod () is of crank design.571181291516. The exhaust-gas turbocharger as claimed in claim 1 , wherein the pins ( claim 1 , ) are fixed in the eyelets ( claim 1 , ) of the coupling rod () by means of lock washers ( and respectively).69. The exhaust-gas turbocharger as claimed in claim 1 , wherein one end region of the coupling rod () is connected to an electric actuator.79. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod () is a control rod of a pneumatic actuator.8918128121314. A coupling rod () of an exhaust-gas turbocharger () claim 1 , having two end regions which are spaced apart from one another and in which eyelets ( and ) are formed claim 1 , wherein the eyelets ( claim 1 , ) are provided with in each case one metal sleeve ( and ).913149. The coupling rod as claimed in claim 8 , wherein the metal sleeves ( claim 8 , ) are cast at the edge into the plastics material of the ...

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Номер записи: 95
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: 96
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: 97
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: 98
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: 99
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: 100