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公开(公告)号：US11965515B2
公开(公告)日：2024-04-23
申请号：US17839734
申请日：2022-06-14
Applicant: Carrier Corporation
Inventor： Wei Zhang
IPC: F04D17/10 , F04D25/06 , F04D29/051 , F04D29/056 , F04D29/057 , F04D29/08 , F25B31/02
CPC classification number: F04D17/10 , F04D25/06 , F04D29/051 , F04D29/056 , F04D29/057 , F04D29/083 , F25B31/026
Abstract: A centrifugal compressor, including: a housing; a motor assembly disposed in the housing and a motor cavity and a motor shaft 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 located at the first end of the motor shaft and provided with a first labyrinth sealing mechanism; a second impeller assembly located at the second end of the motor shaft and provided with a second labyrinth sealing mechanism; a first gas bearing assembly provided between the motor cavity and the first impeller assembly; and a second gas bearing assembly provided between the motor cavity and the second impeller assembly; wherein the first labyrinth sealing mechanism is kept in gas communication with the first gas bearing assembly, and the second labyrinth sealing mechanism is kept in gas communication with the second gas bearing assembly.
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公开(公告)号：US11852425B2
公开(公告)日：2023-12-26
申请号：US17113663
申请日：2020-12-07
Applicant: Carrier Corporation
Inventor： Wei Zhang , Abbas A. Alahyari , Jack Leon Esformes
CPC classification number: F28F9/22 , F28D7/1607 , F28F2009/228
Abstract: The present disclosure relates to heat exchangers and heat exchange systems such heat exchangers. The heat exchangers include a shell having an inlet and an outlet and heat exchange tube bundles arranged therein. The shell includes a first region communicating with the inlet configured to accommodate the heat exchange tube bundles and a refrigerant input from the inlet. The refrigerant performs heat exchange with a fluid in the heat exchange tube bundles. A second region is arranged between the first region and the outlet and communicates with the first region and the outlet. A heating device is disposed in the second region. Embodiments may optimize spatial layout of the heat exchanger tube bundles, effectively improving the utilization of shell space of the heat exchanger the heat transfer efficiency of the heat exchanger at the same material cost, and enhance the overall performance, safety and reliability of the system.
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3.发明公开公开(公告)号：US20240240645A1
公开(公告)日：2024-07-18
申请号：US18415260
申请日：2024-01-17
Applicant: Carrier Corporation
Inventor： Wei Zhang , Jiedong Li , Jun Cao , Caiyan Jin
IPC: F04D29/056 , F04D17/10 , F04D29/42
CPC classification number: F04D29/056 , F04D17/10 , F04D29/4206
Abstract: The present invention relates to a gas bearing for a centrifugal compressor, comprising a housing and a motor shaft located within the housing. The gas bearing comprises: a bearing housing, sleeved on an outer side of the motor shaft and fixed on the housing of the centrifugal compressor; an electromagnetic stator, fixed in or near the middle of the top of the bearing housing, and wound with a coil that can be powered; an electromagnetic rotor, fixed on an outer surface of the motor shaft and arranged circumferentially around the motor shaft; and a foil, located between the bearing housing and the motor shaft, and attached with a frication-resistant coating. The present invention further proposes a centrifugal compressor configured with the gas bearing, and a refrigeration system equipped with the centrifugal compressor.
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公开(公告)号：US20230384008A1
公开(公告)日：2023-11-30
申请号：US18322107
申请日：2023-05-23
Applicant: CARRIER CORPORATION
Inventor： Wei Zhang
CPC classification number: F25B43/006 , F25B43/02 , F25B31/004 , F25B2341/0011 , F25B2341/0015
Abstract: The refrigeration system comprises: a main flow path comprising a compressor, a condenser, a throttling device and an evaporator, wherein the compressor comprises at least a first compression stage and a second compression stage; and the refrigeration system further comprises: an ejector configured to eject low-pressure refrigerant from the evaporator by means of high-pressure refrigerant from the condenser and to mix them into medium-pressure gas-liquid two-phase refrigerant; and a separator configured to separate the medium-pressure gas-liquid two-phase refrigerant from the ejector into gas-phase refrigerant and liquid-phase refrigerant, to deliver the gas-phase refrigerant separated to a gas supply port between a fluid outlet of the first compression stage and a fluid inlet of the second compression stage in the compressor, and to deliver the liquid-phase refrigerant separated to a motor housing of the compressor for cooling a rotor and a stator in the motor housing by flash evaporation.
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公开(公告)号：US11598582B2
公开(公告)日：2023-03-07
申请号：US17127603
申请日：2020-12-18
Applicant: Carrier Corporation
Inventor： Wei Zhang , Bryce Kirk Moore , Abbas A. Alahyari , Dhruv Chanakya Hoysall , Tobias H. Sienel , Jack Leon Esformes
Abstract: A shell-and-tube heat exchanger and an air conditioning system. The shell-and-tube heat exchanger includes: a shell provided with a liquid inlet and an vapor outlet, the vapor outlet being disposed at an top portion of the shell; and a heat exchange tube bundle disposed in the shell in an axial direction of the shell; wherein the heat exchange tube bundle includes: a plurality of first heat exchange tubes located at an upper portion, the first heat exchange tubes having a first spacing therebetween; and a plurality of second heat exchange tubes located at a lower portion, the second heat exchange tubes having a second spacing therebetween; the first spacing is different from the second spacing.
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Patent Agency Ranking
公开(公告)号：US11585577B2
公开(公告)日：2023-02-21
申请号：US17125111
申请日：2020-12-17
Applicant: CARRIER CORPORATION
Inventor： Wei Zhang
Abstract: The disclosure relates to a heat exchanger. The heat exchanger includes a shell and heat exchange tube bundles located in the shell, the shell has an inlet and an outlet, and a refrigerant flows in through the inlet, exchanges heat with a fluid in the heat exchange tube bundles, and then flows out from the outlet, and the outlet is provided with an extension section that extends into an interior of the shell and has a receiving portion configured to receive at least a part of a liquid in the refrigerant flowing toward the outlet after heat exchange. The disclosure is easy to manufacture, install and maintain, and has a low cost. By optimizing the structure of an outlet pipeline of the heat exchanger, the influence of liquid carryover can be effectively controlled, and the overall performance, safety and reliability of the system can be enhanced.
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公开(公告)号：US20220403850A1
公开(公告)日：2022-12-22
申请号：US17839734
申请日：2022-06-14
Applicant: Carrier Corporation
Inventor： Wei Zhang
IPC: F04D17/10 , F25B31/02 , F04D25/06 , F04D29/056 , F04D29/051 , F04D29/08
Abstract: A centrifugal compressor, including: a housing; a motor assembly disposed in the housing and a motor cavity and a motor shaft 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 located at the first end of the motor shaft and provided with a first labyrinth sealing mechanism; a second impeller assembly located at the second end of the motor shaft and provided with a second labyrinth sealing mechanism; a first gas bearing assembly provided between the motor cavity and the first impeller assembly; and a second gas bearing assembly provided between the motor cavity and the second impeller assembly; wherein the first labyrinth sealing mechanism is kept in gas communication with the first gas bearing assembly, and the second labyrinth sealing mechanism is kept in gas communication with the second gas bearing assembly.
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公开(公告)号：US20220146214A1
公开(公告)日：2022-05-12
申请号：US17453017
申请日：2021-11-01
Applicant: Carrier Corporation
Inventor： Lokanath Mohanta , Wei Zhang
Abstract: A finned tube (e.g., for use in a flooded and falling film evaporator) is provided. The finned tube includes a tube body with an interior surface and an exterior surface. The finned tube may include a plurality of adjacent helical fins (e.g., continuously or intermittently) protruding circumferentially around the exterior surface of the tube body. At least one channel is disposed between the plurality of adjacent helical fins. Each respective helical fin includes at least one sidewall and a fin top. Each channel includes at least one channel enhancement impressed radially into and transversely through at intervals around the circumference of the exterior surface of the tube body. The finned tube may also include at least one top enhancement and/or sidewall enhancement impressed radially into and transversely through at intervals around the circumference of the exterior surface of the tube body.
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公开(公告)号：US20210318039A1
公开(公告)日：2021-10-14
申请号：US17125111
申请日：2020-12-17
Applicant: CARRIER CORPORATION
Inventor： Wei Zhang
Abstract: The disclosure relates to a heat exchanger. The heat exchanger includes a shell and heat exchange tube bundles located in the shell, the shell has an inlet and an outlet, and a refrigerant flows in through the inlet, exchanges heat with a fluid in the heat exchange tube bundles, and then flows out from the outlet, and the outlet is provided with an extension section that extends into an interior of the shell and has a receiving portion configured to receive at least a part of a liquid in the refrigerant flowing toward the outlet after heat exchange. The disclosure is easy to manufacture, install and maintain, and has a low cost. By optimizing the structure of an outlet pipeline of the heat exchanger, the influence of liquid carryover can be effectively controlled, and the overall performance, safety and reliability of the system can be enhanced.
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公开(公告)号：US20210190445A1
公开(公告)日：2021-06-24
申请号：US17127603
申请日：2020-12-18
Applicant: Carrier Corporation
Inventor： Wei Zhang , Bryce Kirk Moore , Abbas A. Alahyari , Dhruv Chanakya Hoysall , Tobias H. Sienel , Jack Leon Esformes
Abstract: A shell-and-tube heat exchanger and an air conditioning system. The shell-and-tube heat exchanger includes: a shell provided with a liquid inlet and an vapor outlet, the vapor outlet being disposed at an top portion of the shell; and a heat exchange tube bundle disposed in the shell in an axial direction of the shell; wherein the heat exchange tube bundle includes: a plurality of first heat exchange tubes located at an upper portion, the first heat exchange tubes having a first spacing therebetween; and a plurality of second heat exchange tubes located at a lower portion, the second heat exchange tubes having a second spacing therebetween; the first spacing is different from the second spacing.
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