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公开(公告)号：EP4156469A1
公开(公告)日：2023-03-29
申请号：EP22183672.9
申请日：2022-07-07
摘要： A stator (302) and a motor (300) including a stator (302). The stator (302) includes a stator hub (306), a plurality of stator teeth (308) extending from the stator hub (306) that define a stator slot (112) having a stator slot base (112a), at least one winding (310) disposed in the stator slot, and one or more oscillating heat pipes (150) disposed at least partially in the at least one winding (310). The at least one winding (310) is held apart from the stator slot base (112a) so that a cooling channel (350) is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes (150) is disposed in the channel (350) so cooling fluid can be passed between the stator slot base (112a) and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes (150).
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公开(公告)号：EP4292202A1
公开(公告)日：2023-12-20
申请号：EP21709305.3
申请日：2021-02-09
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公开(公告)号：EP4292200A1
公开(公告)日：2023-12-20
申请号：EP21709300.4
申请日：2021-02-09
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4.发明公开
公开(公告)号：EP4016815A1
公开(公告)日：2022-06-22
申请号：EP21210274.3
申请日：2021-11-24
摘要： An electric motor system includes an electric motor (10), and a thermal management system (12). The thermal management system (12) includes a two-phase refrigerant circuit (28) circulating a flow of refrigerant through the electric motor (10), and a refrigerant-air heat exchanger (18) fluidly connected to the electric motor (10) via the two-phase refrigerant circuit (28), such that the flow of refrigerant is boiled via heat generated by the electric motor (10), and returned to a subcooled liquid state to cool the electric motor (10). A method of dissipating thermal energy from an electric motor (10) includes urging a flow of refrigerant through an electric motor (10), thereby boiling the flow of refrigerant, directing the flow of refrigerant from the electric motor to a refrigerant-air heat exchanger (18) via a two-phase refrigerant circuit (28), and cooling the refrigerant to a sub-cooled liquid state at the refrigerant-air heat exchanger via thermal energy exchange with a flow of air through the refrigerant-air heat exchanger (28).
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公开(公告)号：EP4184758A1
公开(公告)日：2023-05-24
申请号：EP22193785.7
申请日：2022-09-02
摘要： Aircraft electric motors (200; 300; 400; 500; 600) are described. The aircraft electric motors include a motor unit having a rotor (102; 212; 302) and a stator (106; 210; 304; 402; 502; 602), wherein the stator includes a plurality of windings (114; 310; 403; 604) and cooling channels (230; 314) arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system (204). The cooling system includes an oscillating heat pipe (406; 504; 606) containing a first working fluid (412; 506; 612), wherein the oscillating heat pipe is arranged to pick up heat from at least one winding, the oscillating heat pipe having an evaporator section (408; 508; 608) arranged in thermal contact with the at least one winding (403) and a condenser section (410; 510; 610) arranged away from the evaporator section and a heat pickup portion (416; 514; 616) arranged to receive a second working fluid (420; 518; 620) to remove heat from the condenser section of the oscillating heat pipe.
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公开(公告)号：EP4178091A1
公开(公告)日：2023-05-10
申请号：EP22193943.2
申请日：2022-09-05
摘要： Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor (212) and a stator (210), wherein the stator includes a plurality of windings (310) and cooling channels (314) arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system having at least one directional feature (706, 708) forming a portion of at least one cooling channel, the at least one directional feature configured to prevent backflow of a cooling fluid that passes through the at least one cooling channel.
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公开(公告)号：EP4178085A1
公开(公告)日：2023-05-10
申请号：EP22194969.6
申请日：2022-09-09
摘要： Aircraft electric motors are described. The aircraft electric motors includes a motor unit having a rotor (302) and a stator (304), wherein the stator includes a plurality of windings (310) and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes at least one cooling channel (404) integrally formed within at least one winding, wherein the at least one cooling channel comprises an inlet (410) to receive a two-phase cooling fluid and an outlet (412) configured to discharge the two-phase cooling fluid, wherein a cross-sectional area of the at least one cooling channel at the inlet is less than a cross-sectional area of the at least one cooling channel at the outlet.
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公开(公告)号：EP4175130A1
公开(公告)日：2023-05-03
申请号：EP22191734.7
申请日：2022-08-23
IPC分类号： H02K9/19 , H02K11/33 , H02K3/24 , H02K1/20 , H02K9/18 , H02K9/20 , H02K21/12 , H02K21/14 , H02K21/22
摘要： Aircraft electric motors include a motor unit (404) having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit (406) is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path (412) configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path (414) configured to direct flow of the working fluid through the drive unit (406) and a separator (410) arranged upstream of each of the liquid cooling path (412) and the vapor cooling path (414) and configured to direct a liquid portion of the working fluid into the liquid cooling path (412) and configured to direct a vapor portion of the working fluid into the vapor cooling path (414).
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公开(公告)号：EP4087091A1
公开(公告)日：2022-11-09
申请号：EP22166824.7
申请日：2022-04-05
发明人： TANGUDU, Jagadeesh Kumar , ALAHYARI, Abbas A. , CHAUDHRY, Zaffir A. , SUR, Aritra , SAVIERS, Kimberly Rae , ZHAO, Wenping , ZHANG, Huan , KUCZEK, Andrzej Ernest
IPC分类号： H02K1/18 , H02K1/30 , H02K7/116 , H02K9/10 , H02K21/12 , H02K1/20 , H02K21/14 , H02K21/22 , H02K1/27 , H02K1/278 , H02K7/08 , H02K16/02
摘要： Aircraft electric motors are described. The aircraft electric motors include a cooling system (204) comprising an annular heat exchanger (226), a motor housing (202) arranged radially inward from the heat exchanger, the motor housing defining a rotor-stator cavity and a gear assembly cavity, a rotor sleeve (216) arranged within the rotor-stator cavity, a gear assembly (224) arranged within the gear assembly cavity, a first shaft (220) operably coupled to the rotor sleeve and configured to be rotationally driven by the rotor sleeve to drive rotation of a portion of the gear assembly, and a second shaft (222) operably coupled to the gear assembly and configured to be rotationally driven by the gear assembly.
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公开(公告)号：EP3878523A1
公开(公告)日：2021-09-15
申请号：EP21161868.1
申请日：2021-03-10
摘要： A system and method for providing inerting gas to a protected space. Oxygen is directed from an oxygen source (12) to a motive port (64) of an ejector (18), and air is introduced to a suction port (68) of the ejector. A gas mixture of oxygen and air is directed from an outlet port (73) of the ejector to a reactor, and a reactant is directed from a reactant source (16) to the reactor. Oxygen in the gas mixture is reacted with the reactant to incorporate the oxygen into a non-combustible compound, and an inerting gas comprising the non-combustible compound is directed to the protected space (22).
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