-
公开(公告)号：US11686507B2
公开(公告)日：2023-06-27
申请号：US17576073
申请日：2022-01-14
发明人： Yves Jacques Raimbault , Philippe Del Marcel Tisserand , Qingnan Huang , Marie Tallotte , Clément Reignier
CPC分类号： F25B13/00 , F25B39/00 , F25B40/00 , F25B41/26 , F25B41/30 , F25B2313/0292 , F25B2313/0315 , F25B2600/2515 , F25B2700/2103
摘要： Systems and methods for controlled subcooling of working fluid in a heating, ventilation, air conditioning and refrigeration (HVACR) system through a suction line heat exchanger are disclosed. The suction line heat exchanger may receive a first fluid flow travelling to a suction of the compressor in the HVACR system and second flow of working fluid that is travelling from a heat exchanger receiving the discharge of the compressor to an expansion device. Superheating of the first working fluid may be determined based on temperature measurements prior to and following the suction line heat exchanger. The superheating may be used to control the quantity of the second flow of working fluid introduced into the suction line heat exchanger, for example to maintain superheat that is below a threshold value. These systems may include chillers and heat pump systems, and methods may be applied to chillers or heat pump systems.
-
公开(公告)号：US11555639B2
公开(公告)日：2023-01-17
申请号：US17009096
申请日：2020-09-01
IPC分类号： F25B1/00 , F25B49/02 , F25B41/31 , F25B41/20 , F25B41/40 , F25B13/00 , F25B29/00 , F25B39/00 , F25B43/00 , F25B47/02
摘要： There is provided a HVAC system comprising: a fluid circuit for conveying a refrigerant; a compressor for compressing the refrigerant; three heat exchangers defining an evaporator, an outdoor exchanger and a heat recovery exchanger provided along the fluid circuit; an expansion valve provided along the fluid circuit; and a receiver connected in parallel to the expansion valve, wherein a fill valve is located between the receiver and a connection upstream of the expansion valve and a drain valve is located between the receiver and a connection downstream of the expansion valve; wherein the fluid circuit comprises a plurality of valves which are configured to be controlled based on a selected operating mode such that at least one of the outdoor exchanger and the heat recovery exchanger is connected to a discharge line of the compressor and in series with one of the other heat exchangers which is connected to a suction line of the compressor, with the expansion valve disposed between the heat exchangers; wherein the fill and drain valves are configured to be controlled to store a volume of refrigerant in the receiver so as to provide an effective refrigerant charge in the fluid circuit that corresponds to the selected operating mode.
-
公开(公告)号：US20220381495A1
公开(公告)日：2022-12-01
申请号：US17818172
申请日：2022-08-08
摘要： A dynamic receiver is included in parallel to an expander of a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The dynamic receiver allows control of the refrigerant charge of the HVACR system to respond to different operating conditions. The dynamic receiver can be filled or emptied in response to the subcooling observed in the HVACR system compared to desired subcooling for various operating modes. The HVACR system can include a line directly conveying working fluid from compressor discharge to the dynamic receiver to allow emptying of the dynamic receiver to be assisted by injection of the compressor discharge.
-
公开(公告)号：US10935293B2
公开(公告)日：2021-03-02
申请号：US16457351
申请日：2019-06-28
摘要： Systems and methods are provided for controlling compressor systems to ensure sufficient pressure differentials to provide cooling. A compressor system includes a compressor, a suction pressure sensor at a suction of the compressor, a discharge pressure sensor, a condenser, an expansion device, a liquid line, a liquid line pressure sensor, an evaporator, a condenser blower and a controller. The method includes determining a pressure target based on an intermediate pressure within the compressor and a threshold cooling differential pressure value, determining a pressure ratio setpoint based on the pressure target and a liquid line pressure measured by the liquid line pressure sensor, controlling the condenser blower to operate based on the determined pressure ratio setpoint, determining a subcooling setpoint based on the pressure target and the liquid line pressure in the compressor system, and controlling the expansion device to operate based on the subcooling setpoint.
-
公开(公告)号：US20210055020A1
公开(公告)日：2021-02-25
申请号：US16944847
申请日：2020-07-31
发明人： Yves Jacques Raimbault , Philippe Del Marcel Tisserand , Qingnan Huang , Marie Tallotte , Clément Reignier
摘要： Systems and methods for controlled subcooling of working fluid in a heating, ventilation, air conditioning and refrigeration (HVACR) system through a suction line heat exchanger are disclosed. The suction line heat exchanger may receive a first fluid flow travelling to a suction of the compressor in the HVACR system and second flow of working fluid that is travelling from a heat exchanger receiving the discharge of the compressor to an expansion device. Superheating of the first working fluid may be determined based on temperature measurements prior to and following the suction line heat exchanger. The superheating may be used to control the quantity of the second flow of working fluid introduced into the suction line heat exchanger, for example to maintain superheat that is below a threshold value. These systems may include chillers and heat pump systems, and methods may be applied to chillers or heat pump systems.
-
公开(公告)号：US11953240B2
公开(公告)日：2024-04-09
申请号：US17668109
申请日：2022-02-09
CPC分类号： F25B30/02 , F25B13/00 , F25B29/003 , F25B40/06 , F25B2313/02731 , F25B2700/21152
摘要： There is disclosed a reversible heat pump system 100 and a method of operating a reversible heat pump system to control the temperature of a process fluid of a chiller system 500. In a cooling mode, a working fluid is circulated for co-current flow with a process fluid at a heat exchanger 104 functioning as an evaporator heat exchanger, whereas in a heating mode, the working fluid is circulated for counter-current flow with the process fluid at the same heat exchanger 104 functioning as a condenser heat exchanger.
-
公开(公告)号：US11885545B2
公开(公告)日：2024-01-30
申请号：US17818172
申请日：2022-08-08
CPC分类号： F25B49/02 , F25B40/02 , F25B41/20 , F25B43/006 , F25B45/00 , F25B2345/003 , F25B2345/006 , F25B2400/161 , F25B2400/19 , F25B2500/23 , F25B2500/24 , F25B2600/2523 , F25B2700/19 , F25B2700/21
摘要： A dynamic receiver is included in parallel to an expander of a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The dynamic receiver allows control of the refrigerant charge of the HVACR system to respond to different operating conditions. The dynamic receiver can be filled or emptied in response to the subcooling observed in the HVACR system compared to desired subcooling for various operating modes. The HVACR system can include a line directly conveying working fluid from compressor discharge to the dynamic receiver to allow emptying of the dynamic receiver to be assisted by injection of the compressor discharge.
-
公开(公告)号：US20220290905A1
公开(公告)日：2022-09-15
申请号：US17826938
申请日：2022-05-27
发明人： Yves Jacques Raimbault , Philippe Del Marcel Tisserand , Gabriel Mateos , Stephane David Koenigsecker
IPC分类号： F25B41/20
摘要： A dynamic receiver is included in parallel to an expander of a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The dynamic receiver allows control of the refrigerant charge of the HVACR system to respond to different operating conditions. The dynamic receiver can be filled or emptied in response to the subcooling observed in the HVACR system compared to desired subcooling for various operating modes. The flow through an expander of the HVACR system can be controlled to account for the mass flow rate through an outlet valve of the dynamic receiver when the dynamic receiver is emptied, preventing or reducing instability or effects on system parameters such as the suction superheat.
-
公开(公告)号：US20210180847A1
公开(公告)日：2021-06-17
申请号：US17188496
申请日：2021-03-01
IPC分类号： F25B49/02
摘要： Systems and methods are provided for controlling compressor systems to ensure sufficient pressure differentials to provide cooling. A compressor system includes a compressor, a suction pressure sensor at a suction of the compressor, a discharge pressure sensor, a condenser, an expansion device, a liquid line, a liquid line pressure sensor, an evaporator, a condenser blower and a controller. The method includes determining a pressure target based on an intermediate pressure within the compressor and a threshold cooling differential pressure value, determining a pressure ratio setpoint based on the pressure target and a liquid line pressure measured by the liquid line pressure sensor, controlling the condenser blower to operate based on the determined pressure ratio setpoint, determining a subcooling setpoint based on the pressure target and the liquid line pressure in the compressor system, and controlling the expansion device to operate based on the subcooling setpoint.
-
公开(公告)号：US20240353159A1
公开(公告)日：2024-10-24
申请号：US18304828
申请日：2023-04-21
CPC分类号： F25B45/00 , F25B30/02 , F25B41/20 , F25B49/02 , F25B2600/05
摘要： A receiver assembly for a heat pump system is provided including a first receiver volume and a second receiver volume. The first receiver volume is configured to accommodate an amount of refrigerant based on a difference between a refrigerant charge for cooling operations of the heat pump system and a refrigerant charge for heating operations of the heat pump system. The second receiver volume has a first fluid connection configured to receive a hot gas injection and a second fluid connection. An expander is disposed along the second fluid connection. The receiver assembly further includes a fluid line configured to connect the first receiver volume and the second receiver volume and a controllable valve configured to regulate flow between the first receiver volume and the second receiver volume disposed along the fluid line.
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.015 秒)
