EP2198215A1 - Procédés et systèmes pour utiliser un dispositif d'échangeurs de chaleur à mini canaux dans un circuit de réfrigération - Google Patents

Procédés et systèmes pour utiliser un dispositif d'échangeurs de chaleur à mini canaux dans un circuit de réfrigération

Info

Publication number
EP2198215A1
EP2198215A1 EP07838285A EP07838285A EP2198215A1 EP 2198215 A1 EP2198215 A1 EP 2198215A1 EP 07838285 A EP07838285 A EP 07838285A EP 07838285 A EP07838285 A EP 07838285A EP 2198215 A1 EP2198215 A1 EP 2198215A1
Authority
EP
European Patent Office
Prior art keywords
manifold
system charge
tank
heat
exchanger
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.)
Granted
Application number
EP07838285A
Other languages
German (de)
English (en)
Other versions
EP2198215A4 (fr
EP2198215B1 (fr
Inventor
Salvatore Macri
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
Publication of EP2198215A1 publication Critical patent/EP2198215A1/fr
Publication of EP2198215A4 publication Critical patent/EP2198215A4/fr
Application granted granted Critical
Publication of EP2198215B1 publication Critical patent/EP2198215B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B2400/16—Receivers
    • 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
    • F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/06—Damage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0063—Condensers

Definitions

  • the present disclosure is related to a refrigeration circuit. More particularly, the present disclosure is related to a refrigeration circuit having a mini-channel heat- exchanger and a system charge tank.
  • Refrigeration circuits are typically used in a number of devices in order to condition (e.g., cool, dehumidify, etc) ambient air within a predefined space such as, but not limited to, a house, a building, a car, a refrigerator, a freezer, and other conditioned spaces.
  • a typical refrigeration circuit contains at least a compressor, a condenser, a receiver, a series of valves, at least one evaporator, and a system charge of refrigerant, which circulates throughout the circuit.
  • RTF coils have large internal volumes and provide sufficient space so that the compressed system charge can be stored within the storage area.
  • MCHX mini-channel heat-exchanger
  • a mini-channel heat-exchanger for a refrigeration circuit having an inlet manifold; a first return manifold; a first heat exchange pass in fluid communication between the inlet manifold and the first return manifold, the first heat exchange pass including a plurality of mini-channels; and a system charge tank in direct fluid communication with the first return manifold.
  • a method of performing a system pumpdown in an air conditioning system having a refrigeration circuit includes closing a first valve; running a compressor until all of a system charge has been compressed between the compressor and the first valve and liquid system charge fills a portion of a mini- channel heat-exchanger and a system charge tank, the system charge tank being fluidly connected to the mini-channel heat-exchanger.
  • FIG. 1 is a schematic representation of an exemplary embodiment of a refrigeration circuit according to the present disclosure.
  • FIG. 2 is a side view of a mini-channel heat-exchanger with an integrated system charge tank in vertical orientation according to the present disclosure.
  • FIG. 3 is a top view of a first exemplary embodiment of the heat-exchanger of FIG. 2 configured for use in a vertical orientation according to the present disclosure.
  • FIG. 4 is a side view of a second exemplary embodiment of the heat- exchanger of FIG. 2 configured for use in a horizontal orientation according to the present disclosure.
  • Refrigeration circuit 10 includes a system charge ta ⁇ k (“tank") 12 that can be used to store system charge during a system pump down.
  • tank 12 is shown in use with a mini-channel heat-exchanger, which for purposes of clarity is illustrated as a condenser 14.
  • tank 12 is full of flowing refrigerant in a gaseous state.
  • tank 12 is configured to be filled with refrigerant in a liquid state during the system pump down.
  • Refrigeration circuit 10 includes tank 12, condenser 14, a compressor 18, an evaporator 20, a first valve 22, a second valve 24, a system charge of refrigerant 30, and an expansion device 40. During operation, refrigeration circuit 10 operates in a known manner. Operation of refrigeration circuit 10 is made with reference to FIGS. 1 , 2, and 3.
  • Compressor 18 compresses system charge 30, which flows uninterrupted from the compressor to condenser 14.
  • Condensor 14 includes a plurality of mini- channels 16 arranged in a plurality of heat-exchange passes.
  • Compressed system charge 30 in a gaseous state flows into condenser 14 through first inlet 32 into an inlet manifold 32-1.
  • Inlet manifold 32-1 distributes the flow of charge 30 into a first pass 16-1.
  • Circuit 10 includes at least one condenser fan (not shown) that propels ambient outside air over condenser 14 enabling a heat-exchange between system charge 30 and the ambient outside air.
  • the system charge begins to change from a gaseous state to a liquid state.
  • system charge 30 is collected in a first return manifold 36-1.
  • Tank 12 is in fluid communication with first return manifold 36-1 through a plurality of conduits 38-1 , 38-2.
  • plurality of conduits 38 is a set of holes so that tank 12 is integral with condenser 14.
  • plurality of conduits 38 may be pipes so that tank 12 can be remote from condenser 14.
  • Tank 12 has a length (L T ) that is substantially equal to the length of first return manifold 36-1 (L M ).
  • L T the length of first return manifold 36-1
  • the upper conduit 38-1 is positioned at or near the top of the first return manifold, while the lower conduit 38-2 is positioned at or near the bottom of the first return manifold.
  • a floor (F ⁇ ) of tank 12 is co-planar with or slightly higher than a floor (F M ) of manifold 36-1.
  • condenser 14 is configured for arrangement in a substantially vertical position in refrigeration circuit 10.
  • Return manifold 36-1 distributes the flow of charge 30 into a second pass 16- 2.
  • system charge 30 is collected in a second return manifold 36-2, which distributes the flow of charge 30 into a third pass 16-3.
  • system charge 30 is collected in a third return manifold 36-3, which distributes the flow of charge 30 into a fourth pass 16-4.
  • system charge 30 is collected in an outlet manifold 34-1 , which passes the collected system charge out of condenser 14 at an outlet 34.
  • condenser 14 is illustrated by way of example as a four-pass mini-channel heat-exchanger. However, it is contemplated by the present disclosure for condenser 14 to have as few as one pass and as many passes as desired for the proper operation of circuit 10.
  • Condenser 14 is fluidly connected to expansion device 40 such that system charge 30 flows from the condenser uninterrupted to the expansion device.
  • the position of expansion device 40 can be changed from a fully open position to a fully closed position, and any position therebetween. When expansion device 40 is in a fully closed position, system charge 30, in a liquid state, will collect at the expansion device until such time that the expansion device is opened.
  • Expansion device 40 can be any known expansion device such as, but not limited to, a fixed expansion device (e.g., an orifice) or a controllable expansion device (e.g., a thermal expansion valve).
  • expansion device 40 When expansion device 40 is opened, system charge 30 flows uninterrupted to first valve 22.
  • First valve 22 can be opened or closed either manually or by means of electrical communication from a controller (not shown).
  • first valve 22 is open such that system charge 30 can flow continuously to evaporator 20.
  • system charge 30 As system charge 30 flows through evaporator 20, system charge 30 is in heat-exchange communication with a working fluid (not shown) to condition the working fluid.
  • the working fluid can be ambient indoor air or a secondary loop fluid such as, but not limited to, chilled water or glycol.
  • System charge 30 then exits evaporator 20 and flows continuously to second valve 24.
  • Second valve 24 can be in either an open or closed position and its position can be changed either manually or via electrical communication from a controller (not shown). When second valve 24 is opened, system charge 30 flows uninterrupted from evaporator 20 to compressor 18.
  • first valve 22 is closed and compressor 18 is run.
  • compressed system charge 30 flows through condenser 14 wherein the system charge is changed from a gaseous to liquid state.
  • Liquid system charge 30 will then collect at first valve 22 and will then be collected in the condenser.
  • the liquid system charge will flow through and be collected in the condenser in a reverse order to the normal direction of flow of the system charge. For example, the liquid system charge 30 will first be collected in outlet manifold 34-1 , fourth pass 16-4, and third return manifold 36-3. The collection of liquid system charge 30 will continue until the liquid level reaches the bottom conduit 38-2. Once the fluid level reaches the bottom conduit 38-2, the liquid system charge 30 is collected in tank 12, as well as in the remaining portions of condenser 14.
  • tank 12 is positioned on first return manifold 36-1 so that flow of system charge 30 through first and second conduits 38- 1, 38-2 is in a horizontal direction.
  • Compressor 18 will continue to run until all of system charge 30 has been compressed at which time second valve 24 will be closed. Upon completion of the pumpdown, all of compressed system charge 30 will be stored in outside portion 28 of refrigeration circuit 10 between first and second valves 22, 24.
  • outside portion 28 can be dissociated from inside portion 26 allowing for the inside portion to be serviced without replacing any of system charge 30.
  • First valve 22 and second valve 24 can then be opened. It is contemplated that first and second valves 22, 24 can be either fully opened or partially opened either manually or through electrical communication from a controller (not shown). As such, system charge 30 can now flow freely throughout refrigeration circuit 10. Compressor 18 is turned on and system charge 30 circulates throughout circuit 10.
  • condenser 14 is configured for arrangement in a substantially horizontal position in refrigeration circuit 10. More particularly, tank 12 is arranged with respect to a flow direction through mini-channels 16 so that there is an approximately ninety-degree angle between the tank and the mini-channels.
  • liquid system charge 30 collects at first valve 22 and will then be collected in condenser 14. As the level of liquid system charge 30 increases in condenser 14, the liquid system charge will flow through and be collected in the condenser in a reverse order to the normal direction of flow of the system charge. For example, liquid system charge 30 will first be collected in outlet manifold 34-1 , fourth pass 16-4, and third return manifold 36-3. The collection of liquid system charge 30 continues until the liquid level reaches bottom conduit 38-2. Once the fluid level reaches bottom conduit 38-2, the liquid system charge 30 is collected in tank 12, as well as the remaining portions of condenser 14.
  • tank 12 is positioned on first return manifold 36-1 so that the flow of system charge 30 through first and second conduits 38-1 , 38-2 is in a vertical direction.
  • tank 12 is positioned on first return manifold 36-1 so that flow of system charge 30 through first and second conduits 38- 1 , 38-2 is in a vertical direction.
  • tank 12 is described in use with condenser 14. However, it is contemplated by the present disclosure for tank 12 to find equal use with evaporator 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur à mini canaux destiné à un circuit de réfrigération comportant un collecteur d'entrée, un premier collecteur de renvoi, un premier passage d'échange de chaleur en communication par fluide entre le collecteur d'entrée et le premier collecteur de renvoi, le premier passage d'échange de chaleur incluant une pluralité de mini canaux, ainsi qu'un réservoir de charge de système en communication directe par fluide avec le premier collecteur de renvoi.
EP07838285.0A 2007-09-14 2007-09-14 Dispositif échangeur de chaleur et procédé pour un circuit de réfrigération Active EP2198215B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/020057 WO2009035440A1 (fr) 2007-09-14 2007-09-14 Procédés et systèmes pour utiliser un dispositif d'échangeurs de chaleur à mini canaux dans un circuit de réfrigération

Publications (3)

Publication Number Publication Date
EP2198215A1 true EP2198215A1 (fr) 2010-06-23
EP2198215A4 EP2198215A4 (fr) 2013-12-11
EP2198215B1 EP2198215B1 (fr) 2019-05-22

Family

ID=40452276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07838285.0A Active EP2198215B1 (fr) 2007-09-14 2007-09-14 Dispositif échangeur de chaleur et procédé pour un circuit de réfrigération

Country Status (6)

Country Link
US (1) US20110005243A1 (fr)
EP (1) EP2198215B1 (fr)
CN (1) CN102016455B (fr)
ES (1) ES2728398T3 (fr)
HK (1) HK1156390A1 (fr)
WO (1) WO2009035440A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5536420B2 (ja) * 2009-11-10 2014-07-02 シャープ株式会社 セパレート型空気調和機
US20110219790A1 (en) * 2010-03-14 2011-09-15 Trane International Inc. System and Method For Charging HVAC System
US20130255294A1 (en) * 2012-03-28 2013-10-03 Trane International Inc. Charge Port For Microchannel Heat Exchanger Systems
MX2017010897A (es) * 2015-02-24 2018-06-05 Walmart Apollo Llc Recuperador de calor de refrigeracion.
EP3929503A3 (fr) 2015-06-29 2022-03-30 Trane International Inc. Échangeur de chaleur comprenant un volume de stockage de réfrigérant
TWM561776U (zh) * 2017-03-01 2018-06-11 雙鴻科技股份有限公司 水冷式散熱模組

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224358A (en) * 1990-10-04 1993-07-06 Nippondenso Co., Ltd. Refrigerating apparatus and modulator
FR2747768A1 (fr) * 1996-04-18 1997-10-24 Valeo Thermique Moteur Sa Condenseur pour circuit de refrigeration, en particulier pour la climatisation d'un vehicule automobile
US20010004935A1 (en) * 1999-12-09 2001-06-28 Ryouichi Sanada Refrigerant condenser used for automotive air conditioner
JP2003014336A (ja) * 2001-06-29 2003-01-15 Japan Climate Systems Corp 凝縮器
JP2004069272A (ja) * 2002-08-09 2004-03-04 Denso Corp 冷凍サイクル装置

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JPH05157382A (ja) * 1991-12-09 1993-06-22 Mitsubishi Heavy Ind Ltd 空気調和機
US5277032A (en) * 1992-07-17 1994-01-11 Cfc Reclamation And Recycling Service, Inc. Apparatus for recovering and recycling refrigerants
FR2735845B1 (fr) * 1995-06-22 1997-08-29 Valeo Thermique Moteur Sa Raccord coude pour boite collectrice tubulaire d'un condenseur de climatisation de vehicule
FR2742531B1 (fr) * 1995-12-13 1998-01-30 Valeo Thermique Moteur Sa Plaque collectrice d'echangeur de chaleur, procede pour sa fabrication et echangeur de chaleur comprenant une telle plaque collectrice
FR2746490B1 (fr) * 1996-03-25 1998-04-30 Valeo Thermique Moteur Sa Condenseur a reservoir integre pour circuit de refrigeration
CN1162537A (zh) * 1996-03-25 1997-10-22 瓦莱奥热机公司 用于冷却回路的具有一体化容器的冷凝器
JP4147709B2 (ja) * 1999-03-05 2008-09-10 株式会社デンソー 冷媒凝縮器
JP4078812B2 (ja) * 2000-04-26 2008-04-23 株式会社デンソー 冷凍サイクル装置
CN2606005Y (zh) * 2003-02-20 2004-03-10 上海德尔福汽车空调***有限公司 汽车空调过冷式冷凝器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224358A (en) * 1990-10-04 1993-07-06 Nippondenso Co., Ltd. Refrigerating apparatus and modulator
FR2747768A1 (fr) * 1996-04-18 1997-10-24 Valeo Thermique Moteur Sa Condenseur pour circuit de refrigeration, en particulier pour la climatisation d'un vehicule automobile
US20010004935A1 (en) * 1999-12-09 2001-06-28 Ryouichi Sanada Refrigerant condenser used for automotive air conditioner
JP2003014336A (ja) * 2001-06-29 2003-01-15 Japan Climate Systems Corp 凝縮器
JP2004069272A (ja) * 2002-08-09 2004-03-04 Denso Corp 冷凍サイクル装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009035440A1 *

Also Published As

Publication number Publication date
ES2728398T3 (es) 2019-10-24
HK1156390A1 (en) 2012-06-08
WO2009035440A1 (fr) 2009-03-19
US20110005243A1 (en) 2011-01-13
EP2198215A4 (fr) 2013-12-11
CN102016455A (zh) 2011-04-13
EP2198215B1 (fr) 2019-05-22
CN102016455B (zh) 2013-08-21

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