公开(公告)号：US20240255201A1

公开(公告)日：2024-08-01

申请号：US17789312

申请日：2021-08-19

申请人： NEC Corporation

发明人： Takashi OHTSUKA ,  Koichi Todoroki ,  Yoshinori Miyamoto ,  Masaki Chiba ,  Mahiro Hachiya ,  Minoru Yoshikawa

IPC分类号： F25B49/02 ,  F25B13/00

CPC分类号： F25B49/02 ,  F25B13/00 ,  F25B2700/1933

摘要： An object of the present invention is to prevent cavitation in a refrigerant pump from occurring due to a decrease in a net positive suction head in a cooling device.
A cooling device of the present invention is a cooling device using a refrigeration cycle in which a refrigerant is circulated through a heat receiver (1), a compressor (2), a heat radiator (3), and an expander (4), and includes a tank (5) that separates the refrigerant supplied from the expander (4) into a gas phase refrigerant and a liquid phase refrigerant, a pump (6) that sends the liquid phase refrigerant separated in the tank (5) to the heat receiver (1), and a control unit (7) that controls the amount of increase in pressure of the compressor 2 in the refrigeration cycle, and the control unit (7) increases the pressure of the compressor (2) in a limited range in which the value of the net positive suction head of the pump (6) does not fall below a predetermined value.

公开(公告)号：US20240175595A1

公开(公告)日：2024-05-30

申请号：US18282901

申请日：2022-02-24

申请人： FUJITSU GENERAL LIMITED

发明人： Shinji SASAKI

IPC分类号： F24F11/63 ,  F24F11/30 ,  F25B49/02

CPC分类号： F24F11/63 ,  F24F11/30 ,  F25B49/02 ,  F25B2700/04 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/21151 ,  F25B2700/21152

摘要： An air conditioning system includes an air conditioner that includes a refrigerant circuit that is constituted to have a structure in which indoor unit is connected to an outdoor unit and a predetermined amount of refrigerant is filled, and a server. The conditioner includes a first processor detect a quantity related to control of the conditioner, acquire the detected value, and transmit the acquired value to the server. The server includes a second processor receive the value from the conditioner, estimate a remaining refrigerant amount of the refrigerant remaining in the circuit by using a value of a feature value in a case where a state quantity related to an amount of the refrigerant that is filled in the circuit is indicated by the feature value, and determine whether the value of the feature value is detection value that is to be used to estimate the remaining refrigerant amount.

公开(公告)号：US11994136B2

公开(公告)日：2024-05-28

申请号：US17618910

申请日：2020-07-31

申请人： DANFOSS A/S

发明人： Lin Xiang Sun ,  Brandon Keith Pritchard

IPC分类号： F04D27/00 ,  F04D17/12 ,  F24F1/24 ,  F25B31/00 ,  H02K11/25

CPC分类号： F04D17/122 ,  F04D27/007 ,  F24F1/24 ,  F25B31/008 ,  H02K11/25 ,  F25B2700/1933

摘要： A refrigerant compressor includes, among other things, a first stage and a second stage downstream of the first stage, and a cooling line configured to cool power electronics. The cooling line is configured to be switched between a first mode and a second mode. The first mode is configured to dump refrigerant between the first stage and the second stage, and the second mode is configured to dump refrigerant upstream of the first stage.

公开(公告)号：US11946674B2

公开(公告)日：2024-04-02

申请号：US17254930

申请日：2020-09-11

申请人： Carrier Corporation

发明人： Xi Feng ,  Shuguang Zhang ,  Jun Cao ,  Hao Zhao

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

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

摘要： 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：US20240068722A1

公开(公告)日：2024-02-29

申请号：US18260608

申请日：2021-09-07

申请人： GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD. ,  MIDEA GROUP CO., LTD.

发明人： Zhongzhen LI ,  Bo FAN

IPC分类号： F25B49/02

CPC分类号： F25B49/02 ,  F25B2500/222 ,  F25B2700/171 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/2103 ,  F25B2700/2106 ,  F25B2700/21151 ,  F25B2700/21152

摘要： An air conditioning system, a refrigerant state detection method and a computer-readable storage medium. By adjusting first operating parameters of the air conditioning system, where the first operating parameters include a frequency of a compressor, a wind speed setting, and an opening degree of an electronic expansion valve; collecting second operating parameters of the air conditioning system at a preset time after the first operating parameters have been adjusted, where the second operating parameters include an outdoor environment temperature and operating parameters of the compressor; and determining a refrigerant state of the air conditioning system according to the second operating parameters.

公开(公告)号：US20240053077A1

公开(公告)日：2024-02-15

申请号：US18492630

申请日：2023-10-23

申请人： Rheem Manufacturing Company

发明人： Derek Brasuell ,  Mark Creason ,  Robert Neihouse

IPC分类号： F25B49/02

CPC分类号： F25B49/022 ,  F25B2700/1933 ,  F25B2600/0253 ,  F25B2700/02 ,  F25B2700/21151

摘要： Disclosed herein are air conditioning systems including a refrigerant line configured to transport a refrigerant; a compressor in fluid communication with the suction line; and a controller in communication with a sensor configured to measure a characteristic of the refrigerant line. The compressor can be configured to move the refrigerant through the refrigerant line, and the refrigerant can have a first temperature at the outlet of the compressor. The controller can be configured to receive sensor data from the sensor indicating a current value associated with the characteristic of the refrigerant line; determine, based at least partially on the sensor data, that the characteristic of the refrigerant line is above a predetermined threshold; and output instructions for the compressor to perform one or more corrective actions.

公开(公告)号：US11885546B1

公开(公告)日：2024-01-30

申请号：US17807834

申请日：2022-06-20

申请人： Trane International Inc.

发明人： Jeffrey L. Stewart

IPC分类号： F25B49/02 ,  F24F1/06 ,  F24F110/22

CPC分类号： F25B49/022 ,  F24F1/06 ,  F24F2110/22 ,  F25B2600/025 ,  F25B2600/111 ,  F25B2700/1933

摘要： Examples of the present disclosure relate to climate control systems and outdoor units that use humidity measurements associated with the outdoor environment to improve the operation of one or more components. In some examples, an outdoor unit of a climate control system includes a housing, a compressor located within the housing that circulate a refrigerant fluid, and a humidity sensor that detects a humidity condition of an outdoor environment. The outdoor unit may further include control circuitry that controls the compressor by establishing a target parameter, where the target parameter is associated with a property of a refrigerant fluid. The control circuitry may further receive measurements associated with the humidity condition of the outdoor environment, adjust the target parameter based on the measurement, monitor the property of the refrigerant fluid, compare the monitored property to the adjusted target parameter, and adjust operation of the compressor based on the comparison.

公开(公告)号：US11802726B2

公开(公告)日：2023-10-31

申请号：US17272538

申请日：2018-12-06

申请人： Mitsubishi Electric Corporation

发明人： Tsuyoshi Matsuo ,  Masafumi Tomita ,  Mizuo Sakai

IPC分类号： F25B49/00 ,  F25B49/02

CPC分类号： F25B49/022 ,  F25B2600/027 ,  F25B2700/1931 ,  F25B2700/1933

摘要： A refrigeration cycle device includes a compressor to compress refrigerant, a suction-side detector to detect a pressure of the refrigerant to be suctioned into the compressor, a discharge-side detector to detect a pressure of the refrigerant discharged from the compressor, and controlling circuitry that controls the compressor. When the ratio of a second pressure value detected by the discharge-side detector to a first pressure value detected by the suction-side detector is not between a predetermined upper limit and a predetermined lower limit, the controlling circuitry controls the compressor such that the ratio falls between the predetermined upper limit and the predetermined lower limit.

公开(公告)号：US11781789B2

公开(公告)日：2023-10-10

申请号：US17834831

申请日：2022-06-07

申请人： Energy Recovery, Inc.

发明人： Azam Mihir Thatte ,  Behzad Zamanian Yazdi ,  David Deloyd Anderson ,  James Elliott McLean, Jr. ,  Joseph Michael Marchetti ,  Omprakash Samudrala ,  Neelesh Sarawate ,  Kuo-Chiang Chen ,  Farshad Ghasripoor

IPC分类号： F25B13/00 ,  F25B7/00 ,  F25B30/02 ,  F25B9/00 ,  F03G7/00 ,  F25B39/00 ,  F25B49/02 ,  F25B41/20 ,  F25B39/04

CPC分类号： F25B7/00 ,  F03G7/00 ,  F25B9/008 ,  F25B13/00 ,  F25B30/02 ,  F25B39/00 ,  F25B39/04 ,  F25B41/20 ,  F25B49/02 ,  F25B49/022 ,  F25B2600/025 ,  F25B2600/13 ,  F25B2700/13 ,  F25B2700/151 ,  F25B2700/195 ,  F25B2700/1933 ,  F25B2700/21152 ,  F25B2700/21173

摘要： A fluid handling system includes a pressure exchanger (PX) configured to receive a first fluid at a first pressure and a second fluid at a second pressure and exchange pressure between the first fluid and the second fluid. The system further includes a condenser configured to provide corresponding thermal energy from the first fluid to a corresponding environment. The system further includes a receiver to receive the first fluid output by the PX. The receiver forms a chamber to separate the first fluid into a first gas and a first liquid. The system further includes a first booster to increase pressure of a portion of the first gas to form the second fluid at the second pressure and provide the second fluid at the second pressure to the PX.

公开(公告)号：US20230296302A1

公开(公告)日：2023-09-21

申请号：US18006626

申请日：2021-09-28

申请人： Mitsubishi Electric Corporation

发明人： Yuki TAMURA ,  Nobukazu KOSONE ,  Keisuke KATO

IPC分类号： F25B49/02 ,  G05B19/4155

CPC分类号： F25B49/025 ,  G05B19/4155 ,  F25B2600/021 ,  F25B2700/151 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2600/0253 ,  G05B2219/45219

摘要： A device management system for an inverter compressor is a device management system for an inverter compressor provided with a motor to be driven by an inverter, and includes: a partial discharge detector that detects a voltage of the motor to detect a partial discharge that occurs in the motor; and a determination module that determines whether there is a risk of occurrence of the partial discharge or whether the partial discharge occurs based on a result of detection by the partial discharge detector. When the voltage detected by the partial discharge detector is higher than a first threshold, the determination module determines that there is a risk of the occurrence of the partial discharge or the partial discharge occurs, and performs a protective operation to reduce the risk of the occurrence of the partial discharge in the motor or the occurrence of the partial discharge in the motor.