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163 条记录 (耗时 0.019 秒)

    CENTRIFUGAL COMPRESSOR AND REFRIGERATION SYSTEM
    3.
    发明公开
    CENTRIFUGAL COMPRESSOR AND REFRIGERATION SYSTEM 审中-公开

    公开(公告)号：EP4105492A1

    公开(公告)日：2022-12-21

    申请号：EP22178496.0

    申请日：2022-06-10

    申请人： Carrier Corporation

    发明人： ZHANG, Wei

    IPC分类号： F04D17/12 ,  F04D25/06 ,  F04D29/051 ,  F04D29/057 ,  F04D29/10 ,  F04D29/12

    摘要： The present invention relates to a centrifugal compressor (100), comprising: a housing (110); a motor assembly (120) disposed in the housing and comprising a motor cavity (121) and a motor shaft (122) located in the motor cavity, the motor shaft having a first end and a second end extending from the motor cavity; a first impeller assembly (130) located at the first end of the motor shaft (122) and provided with a first labyrinth sealing mechanism (131); a second impeller assembly (140) located at the second end of the motor shaft and provided with a second labyrinth sealing mechanism (141); a first gas bearing assembly (150) provided between the motor cavity (122) and the first impeller assembly (130); and a second gas bearing assembly (160) provided between the motor cavity and the second impeller assembly (140); wherein the first labyrinth sealing mechanism (131) is kept in gas communication with the first gas bearing assembly (150), and the second labyrinth sealing mechanism (141) is kept in gas communication with the second gas bearing assembly (160). The present invention further provides a refrigeration system configured with the centrifugal compressor (100). The centrifugal compressor (100) according to the present invention can meet the gas supply requirements of the gas bearing in a simple and economical manner.

    A BRAKING ARRANGEMENT FOR A VEHICLE AND A METHOD OF CONTROLLING A BRAKING ARRANGEMENT OF A VEHICLE
    4.
    发明公开
    A BRAKING ARRANGEMENT FOR A VEHICLE AND A METHOD OF CONTROLLING A BRAKING ARRANGEMENT OF A VEHICLE 审中-公开

    公开(公告)号：EP4091890A1

    公开(公告)日：2022-11-23

    申请号：EP21175347.0

    申请日：2021-05-21

    申请人： VOLVO TRUCK CORPORATION

    发明人： RAHM, Fredrik ,  AUDHAV, Tove ,  BHAVANI SHANKAR, Vijai Shankar

    IPC分类号： B60T17/02 ,  F02B39/10 ,  F04D29/057

    摘要： One aspect of the present invention relates to a braking arrangement (100) for a vehicle (10), the braking arrangement comprising an electric machine (102) electrically connectable to an electric power source (104), a brake compressor (106) positioned in an air flow conduit (111), the brake compressor being configured to pressurize a flow of air (113) and to exhaust the pressurized flow of air, and a compressor shaft (107) mechanically connecting the electric machine and the brake compressor to each other, wherein the electric machine is configured to generate a torque on the compressor shaft for operating the brake compressor to pressurize the flow of air, the braking arrangement further comprising an air bearing arrangement (120, 120'), the air bearing arrangement being fluidly connectable to a pressurized brake air tank (150) of the vehicle via an air bearing conduit (158), wherein the air bearing arrangement is suspending the compressor shaft to at least one of the electric machine and the brake compressor.
    Another aspect of the present invention relates to a method of controlling a braking arrangement of a vehicle.

    MOTOR AND BEARING COOLING PATHS
    8.
    发明公开
    MOTOR AND BEARING COOLING PATHS 审中-公开

    公开(公告)号：EP3771833A1

    公开(公告)日：2021-02-03

    申请号：EP19216333.5

    申请日：2019-12-13

    申请人： Hamilton Sundstrand Corporation

    发明人： MERRITT, Brent J. ,  BEERS, Craig M. ,  BECK, John M.

    IPC分类号： F04D29/054 ,  F04D17/10 ,  F04D25/06 ,  F04D25/08 ,  F04D29/051 ,  F04D29/056 ,  F04D29/58 ,  F04D29/057

    摘要： A compressor according to an exemplary embodiment of this disclosure, among other possible things includes, a rotor (22) driven by a shaft (30) and configured to compress air. A motor (28) drives the shaft. First and second journal bearings (34a, 34b) facilitate rotation of the shaft. The first journal bearing is located upstream from the motor, and the second journal bearing is located downstream from the motor. A thrust bearing (33) also facilitates rotation of the shaft. The thrust bearing is downstream from the second journal bearing. A tie rod (70) connects the shaft to a motor rotor shaft adjacent the first journal bearing. The tie rod includes an opening (68) which is configured to communicate cooling air from the motor to the rotor. A method for cooling a compressor is also disclosed.

    A TURBO COMPRESSOR PROVIDED WITH AN AXIAL BEARING COOLING ARRANGEMENT
    9.
    发明公开
    A TURBO COMPRESSOR PROVIDED WITH AN AXIAL BEARING COOLING ARRANGEMENT 审中-公开

    公开(公告)号：EP3613993A1

    公开(公告)日：2020-02-26

    申请号：EP19192850.6

    申请日：2019-08-21

    申请人： Danfoss A/S

    发明人： COTE, Julien ,  VANDESTEENE, Stan ,  VLASTUIN, Jonathan

    IPC分类号： F04D29/057 ,  F04D29/44 ,  F04D29/58 ,  F04D29/051 ,  F04D25/06

    摘要： The turbo compressor includes a drive shaft (3); an impeller (7.1) connected to an first axial end portion of the drive shaft (3); an electrical motor connected to a second axial end portion of the drive shaft (3); an axial bearing arrangement configured to limit an axial movement of the drive shaft (3) during operation, the axial bearing arrangement including an axial bearing plate (18) having an annular ring shape and facing towards the impeller (7.1); an inlet distributor (33) at least partially defining an inlet refrigerant flow path (P) ; and an axial bearing cooling arrangement including bypass openings (40) formed in the inlet distributor (33) and a bypass refrigerant flow path (43) defined by the inlet distributor (33) and the axial bearing plate (18), the bypass openings (40) being configured to derive a part of an inlet refrigerant flow, flowing into the inlet refrigerant flow path (P), into the bypass refrigerant flow path (43) so as to at least partially cool the axial bearing plate (18).