[go: up one dir, main page]

WO2008150289A1 - Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance - Google Patents

Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance Download PDF

Info

Publication number
WO2008150289A1
WO2008150289A1 PCT/US2007/070288 US2007070288W WO2008150289A1 WO 2008150289 A1 WO2008150289 A1 WO 2008150289A1 US 2007070288 W US2007070288 W US 2007070288W WO 2008150289 A1 WO2008150289 A1 WO 2008150289A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
circuit
set forth
heat exchanger
economizer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2007/070288
Other languages
English (en)
Inventor
Michael F. Taras
Alexander Lifson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carrier Corp filed Critical Carrier Corp
Priority to US12/528,642 priority Critical patent/US20100147006A1/en
Priority to EP07798044.9A priority patent/EP2162686A4/fr
Priority to PCT/US2007/070288 priority patent/WO2008150289A1/fr
Priority to CN200780053241A priority patent/CN101755175A/zh
Publication of WO2008150289A1 publication Critical patent/WO2008150289A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers

Definitions

  • This application relates to refrigerant systems with at least two cascaded circuits, and more particularly, to cascade refrigerant systems with performance enhancement features.
  • two distinct refrigerants can be utilized in each of the two circuits, with a hydrocarbon refrigerant utilized only in the upper stage circuit and another refrigerant utilized in the lower stage circuit.
  • the hydrocarbon type of refrigerant can be, for example, propane or isobutene refrigerant. Since the upper stage circuit can be located outside of the enclosed conditioned compartment, it would offer an advantage of locating the flammable refrigerant also outside of the enclosed space, which would mitigate fiammability concerns of these refrigerants.
  • the amount of charge in the upper stage circuit would be substantially reduced as compared to a single circuit refrigerant system. Since the amount of charge in the upper circuit is minimized, the concerns for the fiammability of the refrigerant in this circuit are also reduced.
  • the lower stage circuit is charged with the CO 2 refrigerant. Since only the lower stage circuit is charged with CO 2 , this circuit would operate at much lower pressure as compared to a single circuit refrigerant system (not cascaded) charged with C02 refrigerant. Propane or a like refrigerant would be utilized in the upper circuit.
  • the refrigerant system designer is still faced with many challenges dealing with further improvements of the system efficiency and capacity control.
  • an economizer cycle may be incorporated into a refrigerant system for its performance boost.
  • An economizer cycle operates to subcool a main refrigerant flow, and does so, in one variation, by tapping a portion of refrigerant from the main refrigerant flow and expanding this tapped refrigerant to some intermediate pressure. This expanded refrigerant is at a cooler temperature, and passes in a heat exchange relationship with the main refrigerant flow in an economizer heat exchanger.
  • a flash tank replaces the heat exchanger, where vapor and liquid refrigerant phases are separated, with the liquid flow continuing through the main circuit and the vapor flow injected into the compression process at some intermediate pressure.
  • a vapor refrigerant is returned to the compressor.
  • Another enhancement feature is a refrigerant bypass function.
  • a bypass function at least a portion of partially compressed refrigerant is returned to a refrigerant suction line, allowing for unloading of the refrigerant system.
  • Still another enhancement feature is a liquid-suction heat exchanger.
  • refrigerant downstream of an evaporator passes in heat exchange relationship with a refrigerant downstream of the condenser, allowing for additional subcooling and capacity increase of the refrigerant system.
  • these enhancement features were associated with a standard circuit, where the circuit had an evaporator and gas cooler (or condenser).
  • each of the cascaded circuits does not operate with an evaporator and gas cooler. Instead, the lower stage circuit has an evaporator and shares the common refrigerant-to-refrigerant heat exchanger with the upper stage circuit.
  • the upper circuit has the gas cooler and shares the same common refrigerant-to-refrigerant heat exchanger with the lower circuit. In other words, there is no evaporator associated with the upper circuit and there is no gas cooler associated with the lower circuit.
  • This invention provides additional design features enhancing the cascaded system performance and functionality to become comparable to the traditional refrigerant systems for a wide spectrum of operating and environmental conditions as described in the main body of this application.
  • cascaded refrigerant circuits are incorporated into a refrigerant system design.
  • an upper stage circuit includes a hydrocarbon refrigerant, such as for example propane or isobutene, which can be located outdoors.
  • the upper stage circuit is positioned in a cascaded relationship with a lower stage circuit, which would normally utilize the CO 2 refrigerant.
  • the upper stage circuit is mainly located in the outdoor environment, while the lower stage circuit is normally located in the indoor environment. However, other locations would also fall within the scope of this invention.
  • the lower stage inside CO 2 circuit operates in a subcritical region while the upper stage outside cascaded circuit would operate in a transcritical region if it was charged with the same CO 2 refrigerant.
  • the combination of the two circuits provides performance enhancements for the supercritical region operation of the CO 2 circuit.
  • at least one of the circuits can be equipped with the economized cycle, utilizing either economizer heat exchanger or flash tank arrangements.
  • at least one of the circuits can be equipped with a liquid suction heat exchanger.
  • an unloading feature can be provided for one or both cascaded refrigerant circuits.
  • Figure 1 shows a schematic of prior art system
  • Figure 2 generally illustrates a feature of this prior art.
  • Figure 3 shows a first embodiment of the present invention.
  • Figure 4 shows a second embodiment of the present invention.
  • Figure 5 shows a third embodiment of the present invention.
  • Figure 6 shows a fourth embodiment of the present invention.
  • Figure 7 shows a fifth embodiment of the present invention.
  • Figure 8 shows a sixth embodiment of the present invention.
  • Figure 9 shows a seventh embodiment of the present invention.
  • Figure 10 shows an eighth embodiment of the present invention.
  • FIG. 1 shows a prior art refrigerant system 20 incorporating two cascaded circuits 21 and 23.
  • a lower stage circuit 23 includes a compressor 22 delivering a compressed refrigerant into a refrigerant-to-refrigerant heat exchanger 24.
  • Refrigerant passes from the heat exchanger 24 through an expansion device 26, and to an indoor heat exchanger 28.
  • a fan 30 blows air over external surfaces of the indoor heat exchanger 28 and delivers that conditioned air into the environment 32.
  • the lower stage circuit 23 would normally be charged with a refrigerant that would operate in a subcritical region.
  • One such refrigerant that can be used for this circuit would be CO 2 refrigerant that, while in the lower cascaded circuit, would still be in the subcritical region. If this same
  • CO 2 refrigerant would have been used in the upper cascaded circuit, it is likely to operate at transcritical regime.
  • a compressor 34 compresses a refrigerant and delivers it to a second outdoor heat exchanger 36.
  • a fan 38 blows air over the heat exchanger 36.
  • Refrigerant passes from the heat exchanger 36 downstream to an expansion device 40, and then back through the refrigerant-to-refrigerant heat exchanger 24 to the compressor 22.
  • Figure 2 shows a P-h chart for the refrigerant system 20.
  • the upper stage circuit 21 can be charged with a hydrocarbon refrigerant, and in particular, this refrigerant is disclosed as one of propane or isobutene. It is known that propane and isobutene have great thermo-physical properties as refrigerants, however, they are both potentially explosive, and there are safety concerns to use them, especially in confined environments. By limiting hydrocarbon refrigerant applications to the outdoor heat exchangers, the problem of explosiveness is significantly reduced. Further, by charging only the upper stage cascaded circuit 21 with the hydrocarbon refrigerant, the refrigerant system designer reduces the total amount of the hydrocarbon refrigerant used within the refrigerant system 20, consequently decreasing the flammability risk from using hydrocarbon refrigerants. Moreover, by positioning the fans 38 in an optimum orientation with respect to heat exchanger 36, any leakage or accidental discharge of the hydrocarbon refrigerant into the conditioned space can be directed toward the outdoor environment, thus further minimizing risks of explosion.
  • the lower stage cascaded circuit 23 preferably operates in a subcritical region. Further, while it is disclosed that the upper stage cascaded circuit 21 operates with a hydrocarbon refrigerant, the circuit 21 can operate with other suitable refrigerants. In disclosed embodiments, additional enhancement features are provided to allow the cascaded circuits to perform more efficiently.
  • the upper stage cascaded circuit 100 is equipped with an economizer function 102 that would increase the capacity and amount of subcooling to the main refrigerant flow for this upper stage cascaded economized circuit 100. Consequently, the performance of the lower stage cascaded circuit 101 is also enhanced, since the performance of the refrigerant-to-refrigerant heat exchanger 104, that provides heat transfer interaction means between the upper stage cascaded circuit 100 and the lower stage cascaded circuit 101 and serves as a condenser for the lower stage cascaded circuit 101, is increased.
  • An economizer heat exchanger 109 and an economizer expansion device 99 are shown. Therefore, the capacity and efficiency of the overall cascaded refrigerant system shown in Figure 3 is augmented.
  • a bypass valve 106 can be installed to connect an intermediate pressure side 107 of the upper stage cascaded circuit 100 to the suction pressure side 108 of this circuit. Selective opening of the bypass valve 106 provides the compressor unloading and capacity control means for the upper stage cascaded circuit 100, and therefore for the entire refrigerant system.
  • the economizer function 102 provided for the upper stage cascaded circuit 100 by the economizer heat exchanger 109 in the Figure 3 embodiment can be also provided by a flash tank 112, as shown in Figure 4, and an expansion device 199.
  • the upper stage cascaded circuit 100 can also be equipped with a liquid-suction heat exchanger (LSHE) 114, as shown in Figure 5, once again for the purpose of improving the capacity and amount of subcooling achieved in this upper stage cascaded circuit 100, by transferring heat from the hot refrigerant in a refrigerant line 116 to the suction refrigerant vapor in a refrigerant line 108.
  • LSHE liquid-suction heat exchanger
  • Figure 6 shows another embodiment where the economizer heat exchanger 109 and the liquid- suction heat exchanger 114 features are combined to achieve even further capacity and efficiency improvements for the upper stage cascaded circuit 100, and thus for the entire cascaded refrigerant system.
  • Figure 7 represents another cascaded schematic, where an economizer heat exchanger 120 is incorporated into the lower stage cascaded circuit 101.
  • this lower stage cascaded circuit 101 can also be equipped with an unloader valve 122, which would allow for bypass of a portion of refrigerant from an intermediate pressure side to suction pressure side.
  • Figure 8 shows yet another cascaded schematic where a flash tank 130 is incorporated into the lower stage cascaded circuit 101.
  • Figure 9 shows still another cascaded schematic where a liquid-suction heat exchanger 132 is incorporated into the lower stage cascaded circuit 101.
  • Figure 10 yet shows another yet another cascaded schematic where both functions of the liquid-suction heat exchanger 132 and economizer heat exchanger 120 are incorporated into the lower stage cascaded circuit 101.
  • These enhancement features can be used independently or in combination with each other.
  • This embodiment shows a lower stage compressor 202 and an upper stage compressor 201.
  • Figure 10 also schematically shows a "black box" 300, which illustrates a performance enhancement feature such as disclosed in any of the above embodiments. That is, both circuits can be provided with such a feature.
  • performance enhancement features described above could be incorporated and operated independently or in combination with each other for each of the cascaded circuits within the refrigerant system. Also, it has to be understood that there could be more than two cascaded circuits operating within a refrigerant system. Obviously, in many cases, it would make more sense to apply performance enhancement features listed above to the cascaded circuits charged with the refrigerants that don't operate well in the basic refrigerant cycle.
  • compressor types could be used in this invention.
  • scroll, screw, rotary, or reciprocating compressors can be employed.
  • refrigerant systems that utilize this invention can be used in many different applications, including, but not limited to, air conditioning systems, heat pump systems, marine container units, refrigeration truck-trailer units, and supermarket refrigeration systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne un système réfrigérant amélioré qui incorpore au moins deux circuits disposés en cascade. De préférence, le circuit supérieur utilise un réfrigérant à base d'hydrocarbure et de préférence le circuit inférieur utilise un réfrigérant à base de CO2...De préférence le circuit en cascade à base de CO2 fonctionne surtout dans une région sous critique. Pour améliorer l'efficacité et la capacité de commande du système réfrigérant en cascade, au moins un des circuits est équipé de caractéristiques d'augmentation de performance comme, par exemple, une fonction économie fournie par un réservoir de détente ou un échangeur de chaleur économiseur. D'autres caractéristiques d'amélioration peuvent comprendre également un échangeur de chaleur d'aspiration de liquide et une fonction de dérivation.
PCT/US2007/070288 2007-06-04 2007-06-04 Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance Ceased WO2008150289A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/528,642 US20100147006A1 (en) 2007-06-04 2007-06-04 Refrigerant system with cascaded circuits and performance enhancement features
EP07798044.9A EP2162686A4 (fr) 2007-06-04 2007-06-04 Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance
PCT/US2007/070288 WO2008150289A1 (fr) 2007-06-04 2007-06-04 Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance
CN200780053241A CN101755175A (zh) 2007-06-04 2007-06-04 具有级联回路和性能增强部件的制冷系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/070288 WO2008150289A1 (fr) 2007-06-04 2007-06-04 Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance

Publications (1)

Publication Number Publication Date
WO2008150289A1 true WO2008150289A1 (fr) 2008-12-11

Family

ID=40093957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/070288 Ceased WO2008150289A1 (fr) 2007-06-04 2007-06-04 Système réfrigérant avec circuits en cascade et caractéristiques d'amélioration de performance

Country Status (4)

Country Link
US (1) US20100147006A1 (fr)
EP (1) EP2162686A4 (fr)
CN (1) CN101755175A (fr)
WO (1) WO2008150289A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100300135A1 (en) * 2009-05-27 2010-12-02 Masahisa Otake Refrigerating apparatus
WO2011097583A3 (fr) * 2010-02-08 2011-11-24 Johnson Controls Technology Company Échangeur thermique comportant des sections de bobine empilées
US20110283725A1 (en) * 2010-05-20 2011-11-24 Sim Jieseop Hot water supply apparatus associated with heat pump
WO2012060164A1 (fr) * 2010-11-04 2012-05-10 サンデン株式会社 Dispositif de chauffage de l'air du type pompe à chaleur
US20130061612A1 (en) * 2009-11-11 2013-03-14 E.I. Du Pont De Nemours And Company Refrigerant storage in secondary loop refrigeration systems
WO2013110866A1 (fr) 2012-01-26 2013-08-01 Arkema France Systeme de refrigeration en cascade
EP2708833A1 (fr) * 2012-09-14 2014-03-19 Hitachi Appliances, Inc. Système de réfrigération en cascade
US9217592B2 (en) 2010-11-17 2015-12-22 Johnson Controls Technology Company Method and apparatus for variable refrigerant chiller operation
EP2910871A4 (fr) * 2012-09-21 2017-04-19 Mitsubishi Electric Corporation Dispositif de réfrigération
WO2021030732A1 (fr) * 2019-08-14 2021-02-18 Biocompatibles Uk Limited Cryoréfrigérateur double étage
DE102020201349A1 (de) 2020-02-04 2021-08-05 Volkswagen Aktiengesellschaft Kältemittelkreislaufanordnung und Verfahren zum Betrieb einer Kältemittelkreislaufanordnung

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2662986C (fr) * 2008-04-18 2012-02-07 Serge Dube Unite de refrigeration au dioxyde de carbone
US8997510B2 (en) * 2010-03-10 2015-04-07 Craig McKenzie Solar powered compressor/pump combination
WO2012012493A2 (fr) * 2010-07-23 2012-01-26 Carrier Corporation Cycle d'éjection
CN102374168A (zh) * 2010-08-10 2012-03-14 广东美芝制冷设备有限公司 碳氢制冷剂旋转式压缩机
CN103348200B (zh) * 2011-02-22 2015-05-06 株式会社日立制作所 空气调节热水供给系统
JP5656691B2 (ja) * 2011-03-04 2015-01-21 三菱電機株式会社 冷凍装置
JP2012193908A (ja) * 2011-03-17 2012-10-11 Toshiba Carrier Corp 二元冷凍サイクル装置
JP5136968B2 (ja) * 2011-03-31 2013-02-06 三浦工業株式会社 蒸気発生システム
CN103635761A (zh) * 2011-08-04 2014-03-12 三菱电机株式会社 冷冻装置
JP5761857B2 (ja) * 2011-09-19 2015-08-12 東芝キヤリア株式会社 二元冷凍サイクル装置
DE102011089091A1 (de) * 2011-12-19 2013-06-20 Behr Gmbh & Co. Kg Wärmeübertrager
KR101852797B1 (ko) * 2012-01-09 2018-06-07 엘지전자 주식회사 캐스케이드 히트펌프 장치
KR101873595B1 (ko) 2012-01-10 2018-07-02 엘지전자 주식회사 캐스케이드 히트펌프 장치 및 그 구동 방법
TW201411068A (zh) * 2012-08-01 2014-03-16 Du Pont 於級聯熱泵中在最終級聯階段使用包含ｚ－１，１，１，４，４，４－六氟－２－丁烯之工作流體製造加熱
WO2014047401A1 (fr) 2012-09-20 2014-03-27 Thermo King Corporation Système de transport réfrigéré électrique
CA2815783C (fr) 2013-04-05 2014-11-18 Marc-Andre Lesmerises Systeme de refroidissement au co2 et procede de fonctionnement de celui-ci
CN103486755B (zh) * 2013-10-18 2016-02-24 安徽美乐柯制冷空调设备有限公司 一种二氧化碳复叠式商用制冷系统
WO2016112275A1 (fr) * 2015-01-09 2016-07-14 Trane International Inc. Pompe à chaleur
CA2928553C (fr) 2015-04-29 2023-09-26 Marc-Andre Lesmerises Appareil de refroidissement de co2 et methode d'exploitation dudit appareil
CN104807231A (zh) * 2015-05-12 2015-07-29 上海海洋大学 一种可切换双级和复叠的船用节能超低温制冷系统
CN104896813B (zh) * 2015-06-29 2018-06-05 广东美的暖通设备有限公司 用于空调的多联机系统
CN105066496B (zh) * 2015-07-27 2017-11-03 刘秋克 一种变容双级热泵锅炉集中供热替代机组
US10578344B2 (en) 2015-08-19 2020-03-03 Carrier Corporation Reversible liquid suction gas heat exchanger
CN108351137B (zh) 2015-11-09 2021-12-03 开利公司 并联回路联运集装箱
US10670322B2 (en) 2015-11-09 2020-06-02 Carrier Corporation Series loop intermodal container
JP6522156B2 (ja) * 2015-12-15 2019-05-29 三菱電機株式会社 二元冷凍装置用圧縮機及び二元冷凍装置
US9845979B2 (en) * 2015-12-15 2017-12-19 WinWay Tech. Co., Ltd. Evaporator for a cascade refrigeration system
US20170217592A1 (en) * 2016-02-01 2017-08-03 General Electric Company Aircraft Thermal Management System
KR20250021644A (ko) * 2016-02-16 2025-02-13 허니웰 인터내셔널 인코포레이티드 다단계 저 gwp 에어 컨디셔닝 시스템
CN106766353B (zh) * 2016-12-26 2019-11-22 天津商业大学 能实现双级压缩与复叠循环的制冷系统
TWI638966B (zh) 2017-08-31 2018-10-21 台灣日立江森自控股份有限公司 動力式熱管空調系統
US10365023B2 (en) * 2017-09-06 2019-07-30 Heatcraft Refrigeration Products Llc Refrigeration system with integrated air conditioning by parallel solenoid valves and check valve
US11378318B2 (en) 2018-03-06 2022-07-05 Vilter Manufacturing Llc Cascade system for use in economizer compressor and related methods
IL260159B (en) * 2018-06-19 2022-02-01 N A M Tech Ltd A cooling system consisting of multiple cascades
CN113056642A (zh) * 2018-11-07 2021-06-29 伸和控制工业股份有限公司 流体调温系统和制冷装置
CN109489289B (zh) 2018-11-14 2020-02-18 珠海格力电器股份有限公司 复叠式空气调节系统
DE102019123941A1 (de) * 2019-09-06 2021-03-11 Miele & Cie. Kg Wärmepumpen-Wäschetrockner und Verfahren zu dessen Betrieb
CN112594952A (zh) * 2020-12-16 2021-04-02 宁波爱握乐热能科技有限公司 超低温变频复叠式空气源热泵机组
JP7557171B2 (ja) 2021-01-26 2024-09-27 伸和コントロールズ株式会社 流体温調システム
MX2023014751A (es) * 2021-06-16 2024-03-25 Univ Colorado State Res Found Sistema de bomba de calor de fuente de aire y metodo de uso para generacion de vapor industrial.
CN115597248A (zh) * 2022-09-30 2023-01-13 杭州长川科技股份有限公司（Cn） 制冷模块、制冷系统、芯片测试分选机及制冷方法
US20240125519A1 (en) * 2022-10-12 2024-04-18 Daikin Comfort Technologies Manufacturing, L.P. Cascade cold climate heat pump system
CN117267971A (zh) * 2022-10-31 2023-12-22 付朝乾 一种两级压缩三级复叠型冷热双供热泵
JP7436727B1 (ja) 2023-04-24 2024-02-22 コベルコ・コンプレッサ株式会社 冷凍システム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434221A (en) * 1943-07-02 1948-01-06 Honeywell Regulator Co Control means for plural stage refrigerating systems
US3199304A (en) * 1963-01-18 1965-08-10 Air Prod & Chem Methods for producing low temperature refrigeration
US4918942A (en) * 1989-10-11 1990-04-24 General Electric Company Refrigeration system with dual evaporators and suction line heating
US6293119B1 (en) * 2000-09-18 2001-09-25 American Standard International Inc. Enhanced economizer function in air conditioner employing multiple water-cooled condensers
US6519967B1 (en) * 2001-08-03 2003-02-18 Grasso Gmbh Refrigeration Technology Arrangement for cascade refrigeration system

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590595A (en) * 1969-06-03 1971-07-06 Thermotron Corp Cascade refrigeration system with refrigerant bypass
US3733845A (en) * 1972-01-19 1973-05-22 D Lieberman Cascaded multicircuit,multirefrigerant refrigeration system
JPS5496853A (en) * 1978-01-18 1979-07-31 Hitachi Ltd Cooling process with furonic compound coolant
US4548629A (en) * 1983-10-11 1985-10-22 Exxon Production Research Co. Process for the liquefaction of natural gas
IT1176290B (it) * 1984-06-12 1987-08-18 Snam Progetti Processo per raffreddamento e liquefazione di gas a basso punto di ebollizione
EP0179225B1 (fr) * 1984-09-19 1988-10-19 Kabushiki Kaisha Toshiba Système de pompe de chaleur
US4869069A (en) * 1987-04-09 1989-09-26 Frank J. Scherer Integrated cascade refrigeration system
US5462110A (en) * 1993-12-30 1995-10-31 Sarver; Donald L. Closed loop air-cycle heating and cooling system
US7004936B2 (en) * 2000-08-09 2006-02-28 Cryocor, Inc. Refrigeration source for a cryoablation catheter
DE10000331C2 (de) * 2000-01-07 2001-12-13 Loh Kg Rittal Werk Kühleinrichtung
EP1134514A1 (fr) * 2000-03-17 2001-09-19 Société des Produits Nestlé S.A. Système frigorifique
US6189329B1 (en) * 2000-04-04 2001-02-20 Venturedyne Limited Cascade refrigeration system
US6986262B2 (en) * 2002-11-28 2006-01-17 Sanyo Electric Co., Ltd. Binary refrigeration unit
US20040211193A1 (en) * 2003-04-23 2004-10-28 Ams Research Corporation Cryocooler with oil lubricated compressor
EP1688685B1 (fr) * 2003-11-21 2014-08-13 Mayekawa Mfg Co.Ltd. Système de refroidissement ammoniac / CO2
KR20060123206A (ko) * 2003-11-28 2006-12-01 미쓰비시덴키 가부시키가이샤 냉동 장치 및 공기 조화 장치
ITTO20040588A1 (it) * 2004-09-06 2004-12-06 Iarp S R L Impianto frigorifero a compressione di co2 per applicazioni di bassa temperatura
WO2006094969A1 (fr) * 2005-03-09 2006-09-14 Shell Internationale Research Maatschappij B.V. Procede de liquefaction d’un flux riche en hydrocarbures
WO2008112572A1 (fr) * 2007-03-09 2008-09-18 Johnson Controls Technology Company Système de réfrigération

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434221A (en) * 1943-07-02 1948-01-06 Honeywell Regulator Co Control means for plural stage refrigerating systems
US3199304A (en) * 1963-01-18 1965-08-10 Air Prod & Chem Methods for producing low temperature refrigeration
US4918942A (en) * 1989-10-11 1990-04-24 General Electric Company Refrigeration system with dual evaporators and suction line heating
US6293119B1 (en) * 2000-09-18 2001-09-25 American Standard International Inc. Enhanced economizer function in air conditioner employing multiple water-cooled condensers
US6519967B1 (en) * 2001-08-03 2003-02-18 Grasso Gmbh Refrigeration Technology Arrangement for cascade refrigeration system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2162686A4 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010276230A (ja) * 2009-05-27 2010-12-09 Sanyo Electric Co Ltd 冷凍装置
US20100300135A1 (en) * 2009-05-27 2010-12-02 Masahisa Otake Refrigerating apparatus
US8991204B2 (en) * 2009-05-27 2015-03-31 Panasonic Intellectual Property Management Co., Ltd. Refrigerating apparatus
US20130061612A1 (en) * 2009-11-11 2013-03-14 E.I. Du Pont De Nemours And Company Refrigerant storage in secondary loop refrigeration systems
US9869487B2 (en) 2010-02-08 2018-01-16 Johnson Controls Technology Company Heat exchanger having stacked coil sections
EP3264003A1 (fr) * 2010-02-08 2018-01-03 Johnson Controls Technology Company Système de compression à vapeur
CN102753902A (zh) * 2010-02-08 2012-10-24 江森自控科技公司 具有堆叠的盘管段的热交换器
JP2013519064A (ja) * 2010-02-08 2013-05-23 ジョンソン コントロールズ テクノロジー カンパニー 積層コイル区間を有する熱交換器
US10215444B2 (en) 2010-02-08 2019-02-26 Johnson Controls Technology Company Heat exchanger having stacked coil sections
WO2011097583A3 (fr) * 2010-02-08 2011-11-24 Johnson Controls Technology Company Échangeur thermique comportant des sections de bobine empilées
US20110283725A1 (en) * 2010-05-20 2011-11-24 Sim Jieseop Hot water supply apparatus associated with heat pump
US9347683B2 (en) 2010-05-20 2016-05-24 Lg Electronics Inc. Hot water supply apparatus associated with heat pump
US9416990B2 (en) * 2010-05-20 2016-08-16 Lg Electronics Inc. Hot water supply apparatus associated with heat pump
WO2012060164A1 (fr) * 2010-11-04 2012-05-10 サンデン株式会社 Dispositif de chauffage de l'air du type pompe à chaleur
US9157667B2 (en) 2010-11-04 2015-10-13 Sanden Corporation Heat pump-type heating device
JP2012097993A (ja) * 2010-11-04 2012-05-24 Sanden Corp ヒートポンプ式暖房装置
US9217592B2 (en) 2010-11-17 2015-12-22 Johnson Controls Technology Company Method and apparatus for variable refrigerant chiller operation
WO2013110866A1 (fr) 2012-01-26 2013-08-01 Arkema France Systeme de refrigeration en cascade
EP2708833A1 (fr) * 2012-09-14 2014-03-19 Hitachi Appliances, Inc. Système de réfrigération en cascade
EP2910871A4 (fr) * 2012-09-21 2017-04-19 Mitsubishi Electric Corporation Dispositif de réfrigération
WO2021030732A1 (fr) * 2019-08-14 2021-02-18 Biocompatibles Uk Limited Cryoréfrigérateur double étage
US11786285B2 (en) 2019-08-14 2023-10-17 Biocompatibles Uk Limited Dual stage cryocooler
US12383326B2 (en) 2019-08-14 2025-08-12 Biocompatibles Uk Limited Dual stage cryocooler
DE102020201349A1 (de) 2020-02-04 2021-08-05 Volkswagen Aktiengesellschaft Kältemittelkreislaufanordnung und Verfahren zum Betrieb einer Kältemittelkreislaufanordnung

Also Published As

Publication number Publication date
CN101755175A (zh) 2010-06-23
US20100147006A1 (en) 2010-06-17
EP2162686A4 (fr) 2013-05-22
EP2162686A1 (fr) 2010-03-17

Similar Documents

Publication Publication Date Title
US20100147006A1 (en) Refrigerant system with cascaded circuits and performance enhancement features
CN101960235B (zh) 制冷装置
US8375741B2 (en) Refrigerant system with intercooler and liquid/vapor injection
US20110094259A1 (en) Multi-stage refrigerant system with different compressor types
US20100043475A1 (en) Co2 refrigerant system with booster circuit
US20100199715A1 (en) Refrigerant system with bypass line and dedicated economized flow compression chamber
US20100058781A1 (en) Refrigerant system with economizer, intercooler and multi-stage compressor
US20100071391A1 (en) Co2 refrigerant system with tandem compressors, expander and economizer
US20100083677A1 (en) Economized refrigerant system utilizing expander with intermediate pressure port
EP3862651B1 (fr) Dispositif à cycle frigorifique
CN104833122B (zh) 冷冻装置
CN101878402A (zh) 冷冻装置
JP2011214753A (ja) 冷凍装置
WO2013146415A1 (fr) Dispositif de chauffage du type pompe à chaleur
US7225635B2 (en) Refrigerant cycle apparatus
JPH1114167A (ja) 空気調和機
EP3862656A1 (fr) Dispositif à cycle frigorifique
JP6765086B2 (ja) 冷凍装置
US20100058783A1 (en) Injection of refrigerant in system with expander
JP2009204243A (ja) 冷凍装置
WO2008111968A1 (fr) Prévention de la solidification d'un fluide frigorigène
HK1145201A (en) Refrigerant system with cascaded circuits and performance enhancement features
KR20240024340A (ko) 냉장 시스템 및 방법
CN108870788A (zh) 制冷循环装置和具有该制冷循环装置的液体循环装置
GB2438794A (en) Refrigeration plant for transcritical operation with an economiser

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780053241.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07798044

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12528642

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2007798044

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE