公开(公告)号：US11506210B2

公开(公告)日：2022-11-22

申请号：US15734854

申请日：2020-09-10

Applicant: Carrier Corporation

Inventor： Hao Zhao ,  Xi Feng ,  Shuguang Zhang ,  Jun Cao ,  Huanan Li ,  Shuang Lu

IPC: F04D17/12 ,  F04D17/10 ,  F04D25/06 ,  F04D29/056 ,  F04D29/063 ,  F04D29/42 ,  F04D29/44

Abstract: A centrifugal compressor and a refrigerating device. The compressor includes: a shell, which has a fluid inlet at a first position of the shell, and a fluid outlet at a second position of the shell, a motor assembly, which is arranged in the shell and includes a stator and a rotor, the rotor including a vertically arranged rotor shaft, and the rotor shaft including a lower end and an upper end; a centrifugal compression mechanism, an impeller of which is connected with the rotor shaft so as to be driven by the motor assembly; and a guide member, which is located above the centrifugal compression mechanism, and which defines a flow passage alone or together with a top part of the shell.

公开(公告)号：US20220196298A1

公开(公告)日：2022-06-23

申请号：US17254930

申请日：2020-09-11

Applicant: Carrier Corporation

Inventor： Xi Feng ,  Shuguang Zhang ,  Jun Cao ,  Hao Zhao

IPC: F25B31/00 ,  F25B1/10 ,  F25B49/02 ,  F25B41/22 ,  F25B5/02 ,  H02P29/60

Abstract: An air conditioning system includes a main circuit having a multi-stage compressor, a condenser, a throttling element and an evaporator connected by pipelines; and a cooling branch, the inlet of which is connected to the main circuit between the condenser and the throttling element, and the outlet of which is connected to at least one of the first-stage suction port and the intermediate-stage suction port of the multi-stage compressor, wherein the cooling branch flows through the drive motor of the multi-stage compressor, and a regulating valve for controlling the opening of the cooling branch is provided on the cooling branch; and a control module that controls the opening of the regulating valve on the cooling branch based on the temperature of the outlet downstream of the drive motor on the cooling branch and the intermediate suction pressure of the intermediate-stage suction port of the multi-stage compressor.

公开(公告)号：US20210317837A1

公开(公告)日：2021-10-14

申请号：US17122138

申请日：2020-12-15

Applicant: Carrier Corporation

Inventor： Jun Cao ,  Vishnu M. Sishtla ,  Sheng Chen ,  Hao Zhao

IPC: F04D27/00 ,  F04D25/06

Abstract: The invention relates to a centrifugal compressor and a method of operating the same. A centrifugal compressor of the invention includes an impeller, a diffuser and a variable diffusion system, wherein the diffuser is disposed downstream of the impeller and has a respective diffuser frame that defines at least a channel through which the fluid flows from the impeller; moreover, the variable diffusion system comprises a movable body that is able to move relative to the channel and an electromagnetic actuating device, and the electromagnetic actuating device controls the movable body to move relative to the channel in an electromagnetic driving manner. The variable diffusion system of the centrifugal compressor in the invention is simple in implementation structure, low in cost, easy to operate and good in stability and reliability.

公开(公告)号：US11946674B2

公开(公告)日：2024-04-02

申请号：US17254930

申请日：2020-09-11

Applicant: Carrier Corporation

Inventor： Xi Feng ,  Shuguang Zhang ,  Jun Cao ,  Hao Zhao

IPC: F25B31/00 ,  F25B1/10 ,  F25B5/02 ,  F25B41/22 ,  F25B49/02 ,  H02P29/60

CPC classification number: F25B31/006 ,  F25B1/10 ,  F25B5/02 ,  F25B41/22 ,  F25B49/02 ,  H02P29/60 ,  F25B2400/05 ,  F25B2600/2513 ,  F25B2600/2515 ,  F25B2700/1933 ,  F25B2700/2115

Abstract: An air conditioning system includes a main circuit having a multi-stage compressor, a condenser, a throttling element and an evaporator connected by pipelines; and a cooling branch, the inlet of which is connected to the main circuit between the condenser and the throttling element, and the outlet of which is connected to at least one of the first-stage suction port and the intermediate-stage suction port of the multi-stage compressor, wherein refrigerant from the cooling branch flows through the drive motor of the multi-stage compressor, and a regulating valve for controlling the opening of the cooling branch is provided on the cooling branch; and a control module that controls the opening of the regulating valve on the cooling branch based on the temperature of the outlet downstream of the drive motor on the cooling branch and the intermediate suction pressure of the intermediate-stage suction port of the multi-stage compressor.

公开(公告)号：US20210364001A1

公开(公告)日：2021-11-25

申请号：US15734854

申请日：2020-09-10

Applicant: Carrier Corporation

Inventor： Hao Zhao ,  Xi Feng ,  Shuguang Zhang ,  Jun Cao ,  Huanan Li ,  Shuang Lu

IPC: F04D25/06 ,  F04D17/10 ,  F04D29/056 ,  F04D29/063 ,  F04D29/42 ,  F04D29/44

Abstract: A centrifugal compressor and a refrigerating device. The compressor includes: a shell, which has a fluid inlet at a first position of the shell, and a fluid outlet at a second position of the shell, a motor assembly, which is arranged in the shell and includes a stator and a rotor, the rotor including a vertically arranged rotor shaft, and the rotor shaft including a lower end and an upper end; a centrifugal compression mechanism, an impeller of which is connected with the rotor shaft so as to be driven by the motor assembly; and a guide member, which is located above the centrifugal compression mechanism, and which defines a flow passage alone or together with a top part of the shell.