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31. 发明申请

US20210054849A1 IMPELLER WITH CHORDWISE VANE THICKNESS VARIATION 有权
公开(公告)号：US20210054849A1
公开(公告)日：2021-02-25
申请号：US16546781
申请日：2019-08-21
申请人： PRATT & WHITNEY CANADA CORP.
发明人： Jason NICHOLS
IPC分类号： F04D29/24 , F04D29/28 , F04D29/30 , F04D29/44
摘要： An impeller for a centrifugal compressor, the impeller comprising: a hub defining a rotation axis about which the impeller is rotatable; and a vane extending from the hub, the vane having a leading edge, a trailing edge, and a chord defined therebetween, a pressure side of the vane and a suction side of the vane opposite the pressure side, a vane thickness defined transversely between the pressure side and the suction side, the vane thickness reducing over at least a downstream 40% of the chord, the vane thickness having a trailing edge thickness value at the trailing edge of between 40% and 80% of a maximum thickness value of the vane thickness.

32. 发明授权

US10914313B2 Heat dissipation blade and heat dissipation fan 有权
公开(公告)号：US10914313B2
公开(公告)日：2021-02-09
申请号：US16111220
申请日：2018-08-24
申请人： Acer Incorporated
发明人： Shun-Ta Yu , Wen-Neng Liao , Cheng-Yu Cheng , Jau-Han Ke , Cheng-Wen Hsieh
IPC分类号： F04D29/30 , F04D29/28
摘要： 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.

33. 发明申请

US20210033106A1 DELIVERY DEVICE COMPRISING A SIDE CHANNEL BLOWER OR PERIPHERAL BLOWER 有权
公开(公告)号：US20210033106A1
公开(公告)日：2021-02-04
申请号：US16940818
申请日：2020-07-28
申请人： Schwäbische Hüttenwerke Automotive GmbH
发明人： Dominik Baur , Uwe Meinig
IPC分类号： F04D29/44 , F04D23/00 , F04D29/28 , F04D29/30 , F04D29/42 , F04D29/66
摘要： A delivery device for a medium to be delivered, for example for purging a filter for volatile fuel components, including a blower, which is embodied as a side channel blower or peripheral blower, and optionally an electric drive motor for the blower. The blower including: a housing, including: an inlet and an outlet for the medium to be delivered, for example purge air; a delivery channel which extends in the circumferential direction and has a side channel; and an interrupter channel which extends in the circumferential direction for separating the inlet and the outlet; and an impeller which can rotate in the housing about a rotational axis and includes paddles which, when the impeller is rotated, pass through the delivery channel and the interrupter channel. The delivery device is configured such that the delivery-pressure-over-delivery-flow characteristic curve of the delivery device or the blower flattens or drops towards minimum delivery flow.

34. 发明授权

US10859093B2 Blower 有权
公开(公告)号：US10859093B2
公开(公告)日：2020-12-08
申请号：US15875081
申请日：2018-01-19
申请人： NIDEC CORPORATION
发明人： Takehito Tamaoka , Masashi Hirayama , Naruyuki Horaitani , Shun Hirano , Takayuki Ito
IPC分类号： F04D29/30 , F04D29/28 , F04D29/42 , F04D25/06 , F04D25/02 , F04D17/16
摘要： A blower includes an impeller rotatable about a central axis, a motor that drives the impeller, and a housing that accommodates the impeller and the motor. The impeller includes a plurality of vanes arrayed in a circumferential direction and a flange in which the plurality of vanes are provided at an outer circumferential edge on a radially outer side. The housing includes a first housing that faces a vane lower end surface located on an axial-direction lower side of the vane with a gap interposed therebetween. The vane lower end surface includes a first vane end surface in which a shortest distance to the first housing in an axial direction increases toward the radially outer side.

35. 发明申请

US20200370562A1 IMPELLER HAVING PRIMARY BLADES AND SECONDARY BLADES 审中-公开
公开(公告)号：US20200370562A1
公开(公告)日：2020-11-26
申请号：US16761530
申请日：2017-12-15
申请人： AERONET INC.
发明人： Seungbae LEE
IPC分类号： F04D29/30
摘要： Provided is an impeller including a first portion including a first hub and a plurality of primary blades each extending while being spaced an equal distance from each other along an outer circumference of the first hub and a second portion including a second hub coupled to a lower side of the first hub by using a projection-groove coupling manner and a plurality of secondary blades each extending while being spaced apart from each other along an outer circumference of the second hub. Here, when a projection angle between a leading edge (L.E.) and a trailing edge (T.E.) of each of the primary blades is Φ1, and a projection angle between a leading edge (L.E.) and a trailing edge (T.E.) of each of the secondary blades is θ1, the projection angle Φ1 and θ1 includes an upstream angle Φ1u and θ1u and a downstream angle Φ1d and θ1d, at which the primary blade and the secondary blade overlap each other, and an angle Φ1m and θ1m at which the primary blade and the secondary blade do not overlap each other, and the projection angle θ1 is less than the projection angle Φ1 to satisfy an equation 0

36. 发明授权

US10690142B2 Blade of cross-flow fan 有权
公开(公告)号：US10690142B2
公开(公告)日：2020-06-23
申请号：US15107434
申请日：2014-12-18
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Masafumi Uda
IPC分类号： F04D29/28 , F24F1/0025 , F04D29/66 , F04D17/04 , F04D29/30
摘要： 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 midpoint of 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.

37. 发明授权

US10687440B1 Multi-radial-zone varying blade density fan system 有权
公开(公告)号：US10687440B1
公开(公告)日：2020-06-16
申请号：US16256631
申请日：2019-01-24
申请人： Dell Products L.P.
发明人： Qinghong He , Travis Christian North
IPC分类号： H05K7/20 , F04D29/58 , F04D29/60 , F04D29/30 , F04D29/28
摘要： A multi-radial-zone varying blade density fan system includes a fan in a fan chassis including a plurality of fan blades. A first radial fan zone on the fan includes a first fan blade density provided by fan blades located in the first radial fan zone. A second radial fan zone on the fan is located adjacent the first radial fan zone and includes a second fan blade density that is greater than the first fan blade density and that is provided by fan blades located in the second radial fan zone. A third radial fan zone on the fan is located adjacent the second radial fan zone and includes a third fan blade density that is greater than the second fan blade density and that is provided by fan blades located in the third radial fan zone.

38. 发明授权

US10677258B2 Blower comprising impeller and motor 有权
公开(公告)号：US10677258B2
公开(公告)日：2020-06-09
申请号：US15875134
申请日：2018-01-19
申请人： NIDEC CORPORATION
发明人： Takehito Tamaoka , Masashi Hirayama , Naruyuki Horaitani , Shun Hirano , Takayuki Ito
IPC分类号： F04D29/28 , F04D25/08 , F04D29/42 , F04D29/30 , F04D17/16 , F04D29/66 , G06F1/20 , H05K7/20 , H01L23/467 , F04D25/06
摘要： The blowing device includes an impeller that is rotatable about a center axis and a motor that drives the impeller. The impeller includes a plurality of vanes arranged in a circumferential direction, a flange in which the plurality of vanes are provided at the outer circumferential edge in a radial-direction outside, and a plate-shaped first shielding unit located between the vanes adjacent to each other in the circumferential direction. The first shielding unit is connected to a rear edge surface on an opposite side to the rotation direction of the vane and an outside surface located on the radial-direction outside of the flange.

39. 发明授权

US10662971B2 Phi fan 有权
公开(公告)号：US10662971B2
公开(公告)日：2020-05-26
申请号：US16503991
申请日：2019-07-05
申请人： Gilbert H. Krahn
发明人： Gilbert H. Krahn
IPC分类号： F04D29/30 , F01D5/14 , F04D17/06
摘要： 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.

40. 发明授权

US10662968B2 Method of manufacturing centrifugal fan 有权
公开(公告)号：US10662968B2
公开(公告)日：2020-05-26
申请号：US14443196
申请日：2014-05-09
申请人： LG ELECTRONICS INC.
发明人： Sang Yuk Son , Kyung Jung Lee
IPC分类号： F04D29/28 , F04D29/62 , B23K11/00 , B23K11/11 , B23K11/16 , B23K26/32 , B23K26/244 , F04D29/30 , F04D17/10 , F04D29/44 , B21D11/20 , B21J5/00 , B21K3/04 , B23K101/00 , B23K103/04
摘要： A method of manufacturing a centrifugal fan is provided that includes cutting a metal sheet to form a positive pressure surface forming member and a negative pressure surface forming member, respectively, forming a positive pressure surface and a negative pressure surface; pressing the positive pressure surface forming member and the negative pressure surface forming member to form a first curved surface forming the positive pressure surface and a second curved surface forming the negative pressure surface; trimming the positive pressure surface forming member provided with the fast curved surface and the negative pressure surface forming member provided with the second curved surface to form a shroud bonding surface and a main plate bonding surface; bending the shroud bonding surface and the main plate bonding surface; bonding the positive pressure surface forming member and the negative pressure surface forming member to each other; and bonding the shroud bonding surface and a shroud to each other and bonding the main plate bonding surface and a main plate to each other in a bonded state of the positive pressure surface forming member and the negative pressure surface forming member.

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