公开(公告)号：US20240288183A1

公开(公告)日：2024-08-29

申请号：US18426556

申请日：2024-01-30

申请人： Evapco, Inc.

发明人： Kurt L. Liebendorfer ,  Gregory S. Derosier ,  Trevor Hegg ,  Sarah L. Ferrari ,  Don Hamilton ,  Nicholas Hesser ,  Kenneth Wright

IPC分类号： F24F1/46 ,  F25B5/02 ,  F25B9/00 ,  F25B39/02 ,  F25B39/04 ,  F25B41/39 ,  F25B43/00 ,  F25B49/00 ,  F25D23/00

CPC分类号： F24F1/46 ,  F25B9/002 ,  F25B39/028 ,  F25B39/04 ,  F25B41/39 ,  F25B43/00 ,  F25B49/005 ,  F25D23/006 ,  F25B5/02 ,  F25B43/006 ,  F25B2339/041 ,  F25B2400/05 ,  F25B2400/071 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2500/17 ,  F25B2700/13 ,  F25B2700/1351 ,  F25B2700/19 ,  F25B2700/21175

摘要： A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.

公开(公告)号：US11821458B2

公开(公告)日：2023-11-21

申请号：US16619330

申请日：2018-07-17

申请人： Daikin Industries, LTD.

发明人： Makoto Kojima ,  Takuro Yamada

IPC分类号： F25B41/40 ,  F16B7/04 ,  F16B7/02 ,  F25B41/42 ,  F25B41/39

CPC分类号： F16B7/0413 ,  F16B7/025 ,  F25B41/39 ,  F25B41/40 ,  F25B41/42

摘要： A refrigerant-channel branching component for connecting a connection pipe connected to an outdoor unit with a connection pipe directed toward a plurality of indoor units, the refrigerant-channel branching component includes: an inlet portion; and outlet portions. At least one of the plurality of outlet portions includes: a reference space into which a reference connection pipe with a predetermined outside diameter is inserted; a first space that is adjacent to the reference space and has an inside diameter greater than an inside diameter of the reference connection pipe; and a second space that is adjacent to the first space and has an inside diameter greater than the inside diameter of the first space.

公开(公告)号：US11802725B2

公开(公告)日：2023-10-31

申请号：US16631556

申请日：2017-09-15

申请人： Mitsubishi Electric Corporation

发明人： Hiroyuki Okano

IPC分类号： F25B49/02 ,  F25B13/00 ,  F25B41/34 ,  F25B41/39

CPC分类号： F25B49/02 ,  F25B13/00 ,  F25B41/34 ,  F25B41/39 ,  F25B2313/0233 ,  F25B2313/0252 ,  F25B2313/0253 ,  F25B2600/2513

摘要： The air-conditioning apparatus includes the plurality of heat source apparatuses; a plurality of indoor units each including an indoor heat exchanger and each configured to perform one of cooling and heating operations; a relay device connected to the heat source apparatuses by a high pressure pipe and a low pressure pipe and configured to distribute refrigerant flowing therein from the heat source apparatuses to the plurality of indoor units; and a controller configured to control operations of the heat source apparatuses. The relay device includes a relay device temperature detecting unit configured to detect a temperature of the refrigerant flowing through the bypass pipe. During the heating main operation, the controller changes an opening degree of each of the outdoor side expansion devices based on the temperature detected by the relay device temperature detecting unit.

公开(公告)号：US11725851B2

公开(公告)日：2023-08-15

申请号：US16497504

申请日：2018-03-23

申请人： Carrier Corporation

发明人： Haiping Ding ,  Shaojuan Si ,  Xiangyuan Zhang ,  Michael A. Stark

IPC分类号： F25B1/10 ,  F25B41/20 ,  F25B5/04 ,  F25B41/39

CPC分类号： F25B1/10 ,  F25B5/04 ,  F25B41/20 ,  F25B41/39 ,  F25B2400/0411 ,  F25B2400/13 ,  F25B2500/31 ,  F25B2600/2501 ,  F25B2600/2509 ,  F25B2700/19 ,  F25B2700/21

摘要： A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.

公开(公告)号：US20230204258A1

公开(公告)日：2023-06-29

申请号：US17996626

申请日：2021-04-22

申请人： Karlsruher Institut für Technologie

发明人： Steffen Grohmann ,  Eugen Shabagin ,  David Gomse

IPC分类号： F25B9/00 ,  F25B41/39 ,  F25B9/02

CPC分类号： F25B9/006 ,  F25B9/02 ,  F25B41/39 ,  F25B2400/23

摘要： The invention relates to an apparatus (112) and to a method (210) for generating cryogenic temperatures. The apparatus (112) comprises at least one cooling stage (111) which has a cold region (110) and a warm region (116), and a refrigerant mixture designed specifically for the cooling stage (111) is provided in the warm region (116), the refrigerant mixture having at least two components each having a different boiling temperature, and the cold region (110) comprises at least one cooling stage (111): - a first heat exchanger (122), which has a high-pressure side (120) to receive the refrigerant mixture at a high-pressure level from the warm region (116) of the cooling stage (111) and a low-pressure side (126) to deliver the refrigerant mixture to the warm region (116) of the cooling stage (111); - a first expansion device (136), which is designed for expansion and for cooling of the refrigerant mixture at a low-pressure level; - a second heat exchanger (148), which is designed for cooling and for partial condensation of a proportion of the refrigerant mixture located in a buffer volume (140), the buffer volume (140) being designed to limit the pressure exerted by the refrigerant mixture; and - a second expansion device (150), which is designed for separation of the buffer volume (140) from the low-pressure level of the cooling stage (111) or connection of the buffer volume (140) to said low-pressure level. The invention enables autonomous operation of the apparatus (112) and of the method (210) for generating cryogenic temperatures, in which each cooling stage (111) of the apparatus (112) can be filled with a pre-defined refrigerant mixture and can be permanently operated, and in particular in the cooling phase the refrigerating capacity can be increased, while incorrect distribution of the refrigerant of the relevant cooling stage (111) among parallel flow channels at the cold end of the first heat exchanger (122) can be prevented.

公开(公告)号：US11624555B2

公开(公告)日：2023-04-11

申请号：US16826907

申请日：2020-03-23

申请人： Air Products and Chemicals, Inc.

发明人： Gowri Krishnamurthy ,  Mark Julian Roberts

IPC分类号： F25J1/00 ,  F25J1/02 ,  F25B9/00 ,  F25B1/10 ,  F25B5/00 ,  F25B41/39

摘要： A system and method for increasing the efficiency of natural gas liquefaction processes by using a hybrid cooling system and method. More specifically, a system and method for converting a transcritical precooling refrigeration process to a subcritical process. In one embodiment, the refrigerant is cooled to sub-critical temperature using an economizer. In another embodiment, the refrigerant is cooled to a sub-critical temperature using an auxiliary heat exchanger. Optionally, the economizer or auxiliary heat exchanger can be bypassed when ambient temperatures are sufficiently low to cool the refrigerant to a sub-critical temperature. In another embodiment, the refrigerant is isentropically expanded.

公开(公告)号：US11493250B2

公开(公告)日：2022-11-08

申请号：US17156353

申请日：2021-01-22

申请人： Lennox Industries Inc.

发明人： Der-Kai Hung

IPC分类号： F25B49/02 ,  F25B5/00 ,  F25B13/00 ,  F25B41/20 ,  F25B29/00 ,  F25B41/39 ,  F25B41/385

摘要： A system comprising a compressor, a first valve coupled to the compressor and to a first coil, a first expansion valve coupled to the first coil, and a second expansion valve. The second expansion valve coupled to a second coil. A second valve is coupled to the second coil and the compressor. A third valve is coupled to the compressor and a third coil. In response to receiving a heating demand that is below a threshold heating demand, a controller induces an artificial heating demand.

公开(公告)号：US20220333834A1

公开(公告)日：2022-10-20

申请号：US17626792

申请日：2020-07-14

申请人： Johnson Controls Tyco IP Holdings LLP

发明人： William Leslie Kopko

IPC分类号： F25B39/02 ,  F25B41/39 ,  F25B5/04 ,  F25B6/04 ,  F28D7/00 ,  F28D7/16

摘要： A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes a first vapor compression flow path having a first condenser configured to place a working fluid in a heat exchange relationship with a cooling fluid, a second vapor compression flow path having a first evaporator configured to place the working fluid in a heat exchange relationship with a conditioning fluid, and a shared vapor compression flow path having a second condenser configured to place the working fluid in a heat exchange relationship with the cooling fluid and a second evaporator configured to place the working fluid in a heat exchange relationship with the conditioning fluid. The first vapor compression flow path is configured to direct working fluid vapor from the second evaporator to the first condenser and the second vapor compression flow path is configured to direct working fluid liquid from the second evaporator to the first evaporator.

公开(公告)号：US11371725B2

公开(公告)日：2022-06-28

申请号：US17071456

申请日：2020-10-15

申请人： Therma-Stor LLC

发明人： Scott E. Sloan ,  Weizhong Yu ,  Grant M. Lorang ,  Todd R. DeMonte ,  Timothy S. O'Brien

IPC分类号： F24F3/153 ,  F25B13/00 ,  F25B5/04 ,  F24F3/14 ,  F25B6/04 ,  F25B49/02 ,  F25B41/39 ,  F25B41/385

摘要： A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

公开(公告)号：US11267315B2

公开(公告)日：2022-03-08

申请号：US16651771

申请日：2018-09-14

申请人： Marelli Corporation

发明人： Jun Hatakeyama ,  Satoshi Ogihara ,  Tatsuya Osaki ,  Tomohiro Maeda ,  Mitsuaki Nagata ,  Yasuhito Ookawara

IPC分类号： B60H1/00 ,  B60H1/22 ,  B60H3/02 ,  F25B43/00 ,  B60H1/32 ,  F25B40/00 ,  F25B49/02 ,  F25B41/20 ,  F25B6/04 ,  F25B41/39 ,  F25B5/04

摘要： An air-conditioning device includes: a compressor; an outdoor heat exchanger; an evaporating unit configured to evaporate refrigerant a heater unit configured to heat the air by using the heat of the refrigerant a liquid receiver arranged at the downstream side of the outdoor heat exchanger and a restrictor mechanism provided between the heater unit and the outdoor heat exchanger, wherein, in an operation state in which the flow of the refrigerant is restricted by the restrictor mechanism and heat is released in the heater unit, a first operation mode and a second operation mode are switched, the first operation mode being set such that the liquid-phase refrigerant is stored in the liquid receiver and the gaseous-phase refrigerant is guided to the compressor and the second operation mode being set such that the liquid-phase refrigerant stored in the liquid receiver is guided to the evaporating unit.