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公开(公告)号：US12031544B2
公开(公告)日：2024-07-09
申请号：US18035326
申请日：2020-12-23
CPC分类号： F04D29/164 , F04D29/547 , F05D2250/51
摘要： A fan includes an impeller including a boss and a plurality of blades; an air guide portion through which an airflow moves from one end to the other end of the air guide portion; and a bell mouth defining a first suction passage inside the bell mouth and defining, together with an inner surface of the air guide portion, a second suction passage outside the bell mouth. Between an upstream end point located in an inlet of the first suction passage and a downstream end point located in an outlet of the first suction passage of the bell mouth, the bell mouth includes a minimum possible radius point to which a distance, in a radial direction, from a rotation axis of the boss is smaller than a distance, in the radial direction, from the rotation axis to the downstream end point.
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2.发明公开公开(公告)号：US20240026894A1
公开(公告)日：2024-01-25
申请号：US18256103
申请日：2021-11-03
申请人： AECC SHANGHAI COMMERCIAL AIRCRAFT ENGINE MANUFACTURING CO., LTD. , AECC COMMERCIAL AIRCRAFT ENGINE CO., LTD.
发明人： Chuanjun CAO , Jinchun WANG , Zeyong YIN , Jibao LI , Fan WU , Xiaoshi ZHANG , Zhilong ZHAI , Yixuan JIANG
CPC分类号： F04D29/164 , F04D29/542
摘要： A method includes simplifying flowing of airflow at root of a rotor blade into flowing of free jet, and determining an airflow expansion angle according to Mach number of incoming flow at root of a stator vane; calculating a radial height difference between a first end point on a leading edge of a stator platform and a trailing edge of an adjacent rotor platform by using an axial distance thereof, the angle and a deviation coefficient; determining position of the first end point with radial height difference; determining intersection point of the leading edge and the stator platform as position of a second end point on the leading edge; and determining a profile line between the points by bridging spline curves, so that the tail end thereof is tangent to the intersection line, and the starting end thereof is kept on same plane as side wall of the leading edge.
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公开(公告)号：US11859640B2
公开(公告)日：2024-01-02
申请号：US17791812
申请日：2020-12-04
申请人： ZIEHL-ABEGG SE
发明人： Frieder Loercher
CPC分类号： F04D29/542 , F04D19/002 , F04D29/023 , F04D29/164 , F05D2250/52
摘要： A housing for a fan, in an embodiment for an axial or diagonal fan, with the fan including an impeller and at least one flow-through region, wherein immediately downstream of the impeller or the blades of the impeller in an outer region of the housing and thus in the flow-through region, multiple individual, free-standing guide elements are provided. A fan includes a corresponding housing.
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公开(公告)号：US20230332611A1
公开(公告)日：2023-10-19
申请号：US18042915
申请日：2021-06-22
申请人： BATTLEMAX (PTY) LTD
CPC分类号： F04D29/167 , F04D7/04 , F04D29/4273 , F04D29/2266
摘要： A centrifugal pump which includes a tubular structure which extends into an eye of an impeller and which directs a medium to be pumped into the eye, and wherein an axially extending annular cylindrical sealing clearance is formed between opposing surfaces of the impeller and the structure.
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公开(公告)号：US20230279865A1
公开(公告)日：2023-09-07
申请号：US18197782
申请日：2023-05-16
申请人： Danfoss A/S
发明人： James Wilson , Jin Yan , Lin Xiang Sun , Ruiguo Gao , Brenden Richman
CPC分类号： F04D29/162 , F04D17/10 , F01D5/186 , F01D5/28 , F16J15/4472 , F05D2240/55 , F01D5/189 , F04D29/102 , F01D11/02
摘要： In some aspects, the techniques described herein relate to a refrigerant compressor, including: a stator; a rotor configured to rotate with respect to the stator; and at least one step seal between the rotor and the stator, wherein the step seal includes a first tooth and a second tooth extending from the rotor toward the stator, wherein a downstream surface of the first tooth and an upstream surface of the second tooth are arranged at an angle relative to one another, wherein the angle is less than 90°.
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公开(公告)号：US11674406B2
公开(公告)日：2023-06-13
申请号：US17395882
申请日：2021-08-06
发明人： Simon Baker-Ostiguy
IPC分类号： F01D11/18 , F04D29/16 , B01D19/00 , F01D11/02 , F04D29/08 , F01D5/04 , F04D29/24 , F04D29/30 , F04D29/22 , B04B5/12
CPC分类号： F01D11/18 , B01D19/00 , B01D19/0042 , B01D19/0052 , B04B5/12 , F01D5/043 , F01D5/048 , F01D11/02 , F01D11/025 , F04D29/083 , F04D29/086 , F04D29/162 , F04D29/167 , F04D29/2266 , F04D29/242 , F04D29/245 , F04D29/30 , F05D2250/11 , F05D2250/12 , F05D2250/292 , F05D2260/608 , F05D2300/50212
摘要： An assembly is provided for a turbine engine. This assembly includes a static structure and an impeller rotor housed within the static structure. The impeller rotor includes a vane structure and a shroud. The vane structure includes a first sidewall, a second sidewall and a plurality of vanes arranged circumferentially about a rotational axis. The vanes include a first vane. The first vane includes a first portion, a second portion and a third portion. The first portion is axially between the first sidewall and the second sidewall. The second portion is radially between the first sidewall and the shroud. The third portion is radially between the second sidewall and the shroud. The shroud circumscribes the vane structure. A gap is formed by and extends between the shroud and the static structure. A dimension of the gap changes as the gap extends along the shroud.
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公开(公告)号：US20230032483A1
公开(公告)日：2023-02-02
申请号：US17791812
申请日：2020-12-04
申请人： ZIEHL-ABEGG SE
发明人： Frieder LOERCHER
摘要： A housing for a fan, in an embodiment for an axial or diagonal fan, with the fan including an impeller and at least one flow-through region, wherein immediately downstream of the impeller or the blades of the impeller in an outer region of the housing and thus in the flow-through region, multiple individual, free-standing guide elements are provided. A fan includes a corresponding housing.
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公开(公告)号：US11319961B2
公开(公告)日：2022-05-03
申请号：US16081621
申请日：2016-05-20
发明人： Atsushi Kono , Takashi Ikeda
IPC分类号： F04D25/16 , F24F1/00 , F04D29/16 , F04D29/42 , F24F1/0022 , F24F1/0059 , F24F1/38 , F24F1/40 , F24F1/0007
摘要： A centrifugal blower having high efficiency and reduced noise is provided. A centrifugal blower to be accommodated in a housing having an air inlet includes a spiral casing having a bell mouth and a centrifugal fan housed in the casing. The bell mouth includes a first region and a second region. The first region is disposed closest to the air inlet. A distance from a rotational axis of the centrifugal fan to a downstream end in the first region is greater than a distance from the rotational axis to the downstream end in the second region. A curvature of a surface of the first region in a cross section including the rotational axis is smaller than a curvature of a surface of the second region in a cross section including the rotational axis.
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公开(公告)号：US20220074417A1
公开(公告)日：2022-03-10
申请号：US17530905
申请日：2021-11-19
申请人： Oshkosh Corporation
摘要： A fluid supply system includes a fluid delivery system including a pump, a sensor configured to acquire data regarding the fluid delivery system, and a processing circuit coupled to the sensor. The processing circuit is configured to determine a health level of the fluid delivery system based on the data and provide a notification in response to the health level not satisfying a threshold.
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公开(公告)号：US11242857B2
公开(公告)日：2022-02-08
申请号：US16492192
申请日：2018-03-08
IPC分类号： F04D17/12 , F04D29/046 , F04D29/16
摘要： The centrifugal turbo-compressor (2) includes a hermetic casing; a drive shaft (6); a first and a second compression stage (12, 13) configured to compress a refrigerant and respectively including a first and a second impeller (18, 19) connected to the drive shaft (6) and being arranged in a back-to-back configuration; an interstage sealing device provided between the first and second impellers (18, 19). The hermetic casing includes a main casing portion (4) in which are arranged the first and second compression stages (12, 13) and the inter-stage sealing device. The first and second compression stage (12, 13) respectively includes a first and a second aerodynamic member (29, 31) each having an annular disc shape and respectively facing front-sides (21, 22) of the first and second impellers (18, 19).
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