US20060288733A1 - Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant - Google Patents

Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant Download PDF

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Publication number
US20060288733A1
US20060288733A1 US10/555,311 US55531105A US2006288733A1 US 20060288733 A1 US20060288733 A1 US 20060288733A1 US 55531105 A US55531105 A US 55531105A US 2006288733 A1 US2006288733 A1 US 2006288733A1
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United States
Prior art keywords
refrigerant
evaporator
outlet
intermediate portion
passage
Prior art date
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Abandoned
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US10/555,311
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English (en)
Inventor
Etsuo Shinmura
Osamu Haneda
Koichiro Take
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Takeda GmbH
Resonac Holdings Corp
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Showa Denko KK
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Publication date
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Priority to US10/555,311 priority Critical patent/US20060288733A1/en
Publication of US20060288733A1 publication Critical patent/US20060288733A1/en
Assigned to SHOWA DENKO K.K. reassignment SHOWA DENKO K.K. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HANEDA, OSAMU, SHINMURA, ETSUO, TAKE, KOICHIRO
Assigned to NYCOMED GMBH reassignment NYCOMED GMBH CHANGE OF NAME Assignors: ALTANA PHARMA AG
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00335—Heat exchangers for air-conditioning devices of the gas-air type
    • 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
    • F25B39/02—Evaporators
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators

Definitions

  • the present invention relates to a refrigeration system for use in a refrigeration cycle or the like using CO 2 as a refrigerant. It also relates to an evaporator to be preferably used in the refrigeration system, a method of evaporating a refrigerant, and a vehicle equipped with the refrigeration system.
  • evaporators for use in a refrigeration cycle using CO 2 for example, evaporators disclosed by the following patent documents Nos. 1 and 2 are well-known.
  • a low-temperature and low-pressure liquid-phase CO 2 refrigerant passed through a compressor, a cooler (evaporator) such as a gas cooler and a decompressing device such as an expansion valve.
  • the refrigerant introduced into the evaporator exchanges the heat with the ambient air to thereby be heated while passing through the evaporator, causing a gradual increase in vapor quality. Then, it flows out of the evaporator as a gaseous refrigerant.
  • non-patent document No. 1 discloses a relationship between vapor quality and evaporation coefficient of heat transfer during evaporation process of CO 2 refrigeration.
  • This document reports as follows.
  • the coefficient of evaporation heat transfer can be kept large enough, resulting in high heat exchanging efficiency.
  • a predetermined value a range of 0.4 to 0.6
  • the coefficient of evaporation heat transfer becomes extremely low, resulting in extremely decreased heat exchanging efficiency.
  • the present inventors analyzed in detail a change of vapor quality of CO 2 refrigerant in conventional evaporators shown in the aforementioned patent documents Nos. 1 and 2, and revealed the fact that in conventional evaporators, sufficient heat exchanging efficiency cannot be obtained in the entire region of the evaporator, causing a deterioration of the heat exchanging performance.
  • the refrigerant immediately after being introduced via the refrigerant inlet 201 is large in ratio of liquid phase refrigerant, and therefore low in vapor quality.
  • the ratio of the gaseous phase refrigerant becomes higher due to the heat exchanging with the ambient air, raising the vapor quality up to the predetermined value (the range of 0.4 to 0.6).
  • the refrigerant is introduced to the refrigerant outlet 202 while increasing the vapor quality.
  • the vapor quality of refrigerant is lower than the predetermined value, and therefore large enough coefficient of heat transfer can be secured, which in turn causes efficient heat exchange.
  • the vapor quality of refrigerant becomes higher than the predetermined value, and therefore the heat exchanging rate extremely drops, which may cause a deterioration of the heat exchange performance.
  • the present invention has been made in view of the aforementioned drawbacks, and aims to provide an evaporator, a refrigeration system, a vehicle equipped with the system, and a method of evaporating a refrigerant capable of preventing the vapor quality of refrigerant in an evaporator passage from being increased and capable of enhancing the heat exchanging performance.
  • the first invention has the following structure.
  • An evaporator for use in a refrigeration system includes:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the second invention has the following structure.
  • An evaporator for use in a refrigeration system the evaporator comprises:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of paths in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the third invention has the following structure.
  • An evaporator for use in a refrigeration system comprising:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of evaporation passages in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage corresponding to a connecting portion between adjacent evaporation passages for discharging a refrigerant high in vapor quality passing through the intermediate portion.
  • the refrigerant in cases where the structure as recited in the aforementioned Item 6 is employed, the refrigerant can be circulated smoothly.
  • first to third inventions as recited in the following structures [7] and [8], it can be preferably used in an evaporator using supercritical refrigerant such as a carbon dioxide (CO 2 ).
  • supercritical refrigerant such as a carbon dioxide (CO 2 ).
  • the fourth invention has the following structure.
  • An evaporator for use in a refrigeration system comprising:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gaseous refrigerant among the refrigerant passing through the intermediate portion.
  • the fifth invention has the following structure.
  • An evaporator for use in a refrigeration system comprising:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of paths in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gaseous refrigerant among the refrigerant passing through the intermediate portion.
  • the sixth invention has the following structure.
  • An evaporator for use in a refrigeration system comprising:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of evaporation passages in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage corresponding to a connection portion between adjacent evaporation passages for discharging a gaseous refrigerant among the refrigerant passing through the intermediate portion.
  • the gas phase refrigerant in cases where the structure as recited in the aforementioned Item 12 is employed, the gas phase refrigerant can be extracted assuredly at the intermediate portion of the evaporator passage, further improving the heat exchanging efficient.
  • the refrigerant in cases where the aforementioned structure as recited in Item 13, the refrigerant can be circulated smoothly.
  • first to third inventions as recited in the following structures [14] and [15], it can be preferably used in an evaporator using supercritical refrigerant such as a carbon dioxide (CO 2 ).
  • supercritical refrigerant such as a carbon dioxide (CO 2 ).
  • the aforementioned first to third inventions can be preferably applied to a refrigeration system as shown below.
  • the seventh invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor, wherein the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the eight invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the ninth invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of evaporation passages in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage corresponding to a connecting portion between adjacent evaporation passages for discharging a refrigerant high in vapor quality passing through the intermediate portion.
  • the aforementioned fourth to sixth inventions can be preferably applied to a refrigeration system as shown below.
  • the tenth invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • the eleventh invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of paths in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • the twelfth invention has the following structure.
  • a refrigeration system in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of evaporation passages in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage corresponding to a connection portion between adjacent evaporation passages for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • the aforementioned first to third inventions can be preferably applied to a method for evaporating a refrigeration as shown below.
  • the thirteenth invention has the following structure.
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the fourteenth invention has the following structure.
  • the evaporator comprises:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet by passing the refrigerant through the plurality of paths in turn;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the fifteenth invention has the following structure.
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • the aforementioned fourth to sixth inventions can be preferably applied to a method for evaporating a refrigeration as shown below.
  • the sixteenth invention has the following structure.
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet
  • the seventeenth invention has the following structure.
  • the evaporator comprises:
  • a pair of header tanks disposed in parallel with each other and provided with a refrigerant inlet and a refrigerant outlet;
  • a plurality of heat exchanging tubes each having both ends connected to the header tanks in fluid communication and arranged in parallel with each other in a longitudinal direction of the header tank;
  • the eighteenth invention has the following structure.
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for leading the refrigerant introduced via the refrigerant inlet to the refrigerant outlet via by passing the refrigerant through the plurality of evaporation passages in turn,
  • the invention can be preferably applied to an evaporator for use in vehicles as will be explained below.
  • the nineteenth invention has the following structure.
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the twentieth invention has the following structure.
  • An evaporator for use in a vehicle refrigeration system comprising:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • the aforementioned nineteenth or twentieth invention can be preferably applied to the following structure.
  • the twenty-first invention has the following structure.
  • a refrigeration system for use in vehicles in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the twenty-second invention has the following structure.
  • a refrigeration system for use in vehicles in which a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor,
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • the twenty-third invention has the following structure.
  • a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor, and
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a refrigerant high in vapor quality among the refrigerant passing through the intermediate portion.
  • the twentieth-fourth invention has the following structure.
  • a high-temperature and high-pressure refrigerant compressed by a compressor is cooled by a cooler, a low-temperature and high-pressure refrigerant cooled by the cooler is decompressed by a decompressor, and then the refrigerant decompressed by the decompressor is evaporated by an evaporator and returned to the compressor, and
  • the evaporator comprises:
  • a refrigerant inlet for introducing a refrigerant
  • a refrigerant outlet for discharging the refrigerant
  • an evaporator passage for causing the refrigerant introduced via the refrigerant inlet to evaporate and leading the refrigerant to the refrigerant outlet;
  • an intermediate outlet provided at an intermediate portion of the evaporator passage for discharging a gas phase refrigerant among the refrigerant passing through the intermediate portion.
  • FIG. 1 is a perspective view showing an evaporation apparatus of a refrigeration system for use in vehicles to which an evaporator according to an embodiment of this invention is applied;
  • FIG. 2 is an exploded perspective view showing the lower header tank portion of the evaporator according to the embodiment
  • FIG. 3 is a perspective view showing the lower header tank portion of the evaporator according to the embodiment.
  • FIG. 4 is a cross-sectional view showing the evaporator according to the embodiment.
  • FIG. 5 is an exploded perspective view showing the upper header tank portion of the evaporator according to the embodiment.
  • FIG. 6 is a perspective view showing the partitioning plates of the evaporator according to the embodiment.
  • FIG. 7 is a perspective view showing a gas-liquid separator applied to the evaporation apparatus according to the embodiment.
  • FIG. 8 is a refrigeration passage circuit showing the flow of refrigerant in the evaporation apparatus according to the embodiment.
  • FIG. 9A is a block diagram showing the relationship between the liquid phase refrigerant and the gas phase refrigerant in the evaporator according to the embodiment.
  • FIG. 9B is a graph showing the relationship between the vapor quality of refrigerant and the evaporation coefficient of heat transfer in the evaporator according to the embodiment.
  • FIG. 10A is a block diagram showing the relationship between the liquid phase refrigerant and the gas phase refrigerant in a conventional evaporator.
  • FIG. 10B is a graph showing the relationship between the vapor quality of refrigerant and the evaporation coefficient of heat transfer in the evaporator according to the embodiment.
  • FIGS. 1 to 5 show an evaporation apparatus to be applied to a refrigeration system for use in vehicles which is an embodiment of the present invention.
  • this evaporation apparatus is an apparatus to be applied to an vapor compressing type refrigeration cycle using CO 2 as a refrigerant, and includes an evaporator 100 and a gas-liquid separator 70 provided at a part of a refrigerant passage of the evaporator 100 .
  • the evaporator 100 is provided with, as fundamental structural components, a pair of upper and lower flat header tanks 10 and 30 , flat heat exchanging tubes 1 a and 1 b disposed between the pair of header tanks 10 and 30 with both ends thereof connected to the pair of header tanks 10 and 30 in fluid communication, arranged in parallel with each other in the longitudinal direction (right and left direction) of the header tank, and arranged in two rows in the widthwise direction (fore and aft direction) of the header tank, and corrugated fins each disposed between adjacent tubes 1 a and 1 b.
  • the lower header tank 10 is provided with a header tank main body 11 and a cover plate 20 .
  • the header tank main body 11 is provided with a total of six refrigerant passages 12 a and 12 b extending in the longitudinal direction of the header tank main body 11 therein and disposed in parallel in the fore and aft direction.
  • a plurality of tube connecting apertures 14 a and 14 b each having an elongated configuration corresponding to the end face configuration of the heat exchanging tube 1 a and 1 b and arranged at predetermined intervals in the longitudinal direction of the header tank 10 .
  • round communication apertures 15 a disposed between adjacent refrigerant passages 12 a among the front three refrigerant passages 12 a and between adjacent front side tube connecting apertures 14 a
  • round communication apertures 15 b disposed between adjacent refrigerant passages 12 b among the rear three refrigerant passages 12 b and between adjacent rear side tube connecting apertures 14 b .
  • Each communication aperture 15 a ( 15 b ) and each tube connecting aperture 14 a ( 14 b ) are communicated with corresponding refrigerant passages 12 a ( 12 b ).
  • the front side communication apertures 15 a and the front side tube connecting aperture 14 a cause the front side three refrigerant passages 12 a to be communicated with each other, and the rear side communication apertures 15 b and the rear side tube connecting aperture 14 b cause the rear side three refrigerant passages 12 b to be communicated with each other.
  • each end of the header tank main body 11 is formed cut portion 16 continuing from the front face of the main body 11 and to the rear face thereof and crossing the six refrigerant passages 12 a and 12 b.
  • a cut portion 16 a Further formed on the lower surface side of the intermediate portion of the header tank main body 11 is a cut portion 16 a continuing from the front face of the main body 11 to the intermediate portion thereof and crossing the front side three refrigerant passages 12 a.
  • the cover plate 20 has a size corresponding to the upper surface of the header tank main body 11 .
  • Formed in this cover plate 20 are a plurality of elongated tube insertion apertures 24 a and 24 b corresponding to the tube connecting apertures 14 a and 14 b and disposed in two rows at certain intervals in the longitudinal direction of the cover plate.
  • This cover plate 20 is fixed on the upper surface of the header tank main body 11 with the tube insertion apertures 24 a and 24 b aligned with the tube connecting apertures 14 a and 14 b in a laminated manner, thereby closing the communication apertures 15 a and 15 b.
  • the upper side header tank 30 is provided with a header tank main body 31 and a cover plate 40 .
  • header tank main body 31 In the header tank main body 31 , in the same manner as mentioned above, a total of six refrigerant passages 32 a and 32 b , tube connecting apertures 34 a and 34 b and communication apertures 15 a and 15 b are formed.
  • cut portions 36 b are formed in the upper surface side of both end portions of the upper side header tank main body 31 . Further formed in the lower surface side of the intermediate portion of the header tank 31 is a cut portion 36 b continuing from the rear face of the header tank to the widthwise middle portion and crossing the rear side three refrigerant passages 32 b.
  • a cover plate 40 disposed on the lower surface of the upper side header tank main body 31 is provided with tube insertion aperture 44 a and 44 b in the same manner as mentioned above.
  • This cover plate 40 is fixed to the lower surface of the header tank main body 31 with the tube insertion apertures 44 a and 44 b aligned with the tube connecting apertures 34 a and 34 b in a laminated manner, thereby closing the communication apertures 15 a and 15 b.
  • the heat exchanging tube 1 a ( 1 b ) is constituted by an article formed by an extrusion method or a drawing method, and has a flat cross-sectional shape.
  • Formed in the heat exchanging tube 1 a ( 1 b ) are a plurality of tube apertures 2 extending in the longitudinal direction of the tube and arranged in the widthwise direction thereof.
  • the tube aperture 2 constitutes a heat exchanging passage.
  • the upper and lower end portions of the plurality of heat exchanging tubes 1 a and 1 b are inserted in the tube insertion apertures 24 a and 24 b of the cover plate 20 and 40 of the aforementioned header tank 10 and 30 and then inserted in and connected to the tube connecting apertures 14 a , 14 b , 34 a and 34 b of the header tank main body 11 and 31 .
  • a plurality of heat exchanging tubes 1 a and 1 b are disposed in parallel with each other along the widthwise direction of the evaporator in two rows.
  • a corrugated fin 5 is disposed between the adjacent heat exchanging tubes 1 a and 1 b .
  • the front side refrigerant passages 12 a and 32 a of the header tanks 10 and 30 are communicated with each other via the front row side heat exchanging tubes 1 a
  • the rear side refrigerant passages 12 b and 32 b are communicated with each other via the rear row side heat exchanging tubes 1 b.
  • partition plates 51 to 56 are fitted so as to partition each refrigerant passage 12 a , 12 b , 32 a and 32 b.
  • the partition plate 51 positioned at one end portion (right side end portion) of the upper header tank 30 has a refrigerant inlet 51 b at a position corresponding to the rear side refrigerant passages 32 b .
  • the remaining area is closed.
  • the partition plate 52 ( 53 ) positioned at the intermediate portion of the header tank 10 ( 30 ) is entirely closed.
  • the partition plate 53 positioned at the other end portion (left side end portion) of the upper header tank 30 has an upper side external communication portion 53 b at a position corresponding to the rear side refrigerant passages 32 b .
  • the remaining area is closed.
  • the partition plate 54 positioned at the other end portion of the lower header tank 10 has a lower side external communication portion 54 a at a position corresponding to the front side refrigerant passages 12 a .
  • the remaining area is closed.
  • the partition plate 56 positioned at one end portion of the lower header tank 10 has a refrigerant outlet 56 a at a position corresponding to the front side refrigerant passages 12 a .
  • the remaining area is closed.
  • an end portion of the refrigerant inlet tube 61 b inserted into the one end rear portion of the upper header tank 30 is connected to the refrigerant inlet 51 b .
  • the inlet tube 61 b is connected to the rear side refrigerant passages 32 b of the upper side header tank 30 .
  • the refrigerant outlet tube 61 a disposed along the front side of one end face of the evaporator 100 in the up-and-down direction has a lower end portion bent toward the lower side header tank 10 .
  • the lower end portion is inserted from the front side of one end face of the lower header tank 10 to be connected to the refrigerant outlet 56 a .
  • the refrigerant outlet tube 61 a is connected to the front side refrigerant passage 12 a of the lower side header tank 10 in fluid communication.
  • the gas-liquid separator 70 is disposed along the other end face of the evaporator 100 in the up-and-down direction. Connected to the refrigerant inlet 71 of this gas-liquid separator 70 is an end of a first connecting tube 81 .
  • the other end of the connecting tube 81 is inserted from the rear portion of the other end face of the upper header tank 30 and connected to the upper side external communication portion 53 b in fluid communication.
  • the refrigerant inlet 71 of the gas-liquid separator 70 is connected to the rear side refrigerant passage 32 b in a fluid communication via the first connecting tube 81 .
  • the liquid phase outlet 72 of the gas-liquid separator 70 Connected to the liquid phase outlet 72 of the gas-liquid separator 70 is an end of a second connecting tube 82 .
  • the other end of the connecting tube 82 is inserted from the front portion of the other end face of the lower header tank 10 and connected to the lower side external communication portion 54 a .
  • the liquid phase outlet 72 of the gas-liquid separator 70 is connected to the front side refrigerant passage 12 a of the lower header tank 30 in fluid communication.
  • the gas phase outlet 73 of the gas-liquid separator 70 is one end of a bypass pipe 83 .
  • the other end of the bypass pipe 83 is connected to the aforementioned refrigerant outlet pipe 61 a .
  • the gas phase outlet 73 of the gas-liquid separator 70 is connected to the refrigerant outlet pipe 61 a in fluid communication via the bypass pipe 83 .
  • the gas phase outlet 73 of the gas-liquid separator 70 constitutes an intermediate outlet.
  • the evaporation apparatus of this embodiment having the aforementioned structure forms a refrigeration system using CO 2 together with a compressor, a cooler (condenser) such as a gas cooler and a decompressor such as an expansion valve.
  • the high-temperature and high-pressure gas phase refrigerant compressed by a compressor is cooled by a condenser. Thereafter, the low-temperature and high-pressure refrigerant (liquid refrigerant) is expanded and decompressed by the expansion valve to be a low-temperature and low-pressure refrigerant.
  • This low-temperature and low-pressure liquid phase refrigerant is introduced into the one end side half portion (right side half portion) of the rear side refrigerant passage 32 b in the upper header tank 30 of the evaporator 100 .
  • the introduced refrigerant flows downward through a plurality of heat exchanging tubes 1 b (first path P 1 ) disposed at the one end side half portion (right side half portion) among the rear row heat exchanging tubes 1 b to be introduced into the one end side half portion (right side half portion) of the rear row side refrigerant passage 12 b of the lower header tank 10 .
  • the refrigerant introduced into the one end side half portion of the lower rear side refrigerant passage 12 b is introduced into the other end side half portion (left side half portion) via the rear side refrigerant passage 12 b .
  • the refrigerant introduced into the other end side half portion of the lower rear side refrigerant passage 12 b flows upward through a plurality of heat exchanging tubes (second path P 2 ) disposed at the other end side half portion (left side half portion) among the rear row heat exchanging tubes 1 b to be introduced into the other end side half portion of the rear side refrigerant passage 32 b in the upper header tank 30 .
  • the refrigerant introduced into the other end side half portion of the upper rear side refrigerant passage 32 b is introduced into the gas-liquid separator 70 via the upper side external communication portion 53 b and the first connecting tube 81 .
  • the refrigerant introduced into the gas-liquid separator 70 is separated into a gas phase refrigerant and a liquid phase refrigerant. Only the liquid phase refrigerant is introduced into the other end side half portion (right side half portion) of the front side refrigerant passage 12 a in the lower header tank 10 via the liquid phase outlet 72 and the second connecting tube 82 .
  • the refrigerant introduced into the other end side half portion (left side half portion) of the lower front side refrigerant passage 12 a flows upward through a plurality of heat exchanging tubes (third path P 3 ) disposed at the other end side half portion (left side half portion) among the front row heat exchanging tubes 1 a to be introduced into the other end side half portion of the front side refrigerant passage 32 a in the upper header tank 30 .
  • the refrigerant introduced into the other end side half portion of the upper front side refrigerant passage 32 a is introduced into one end side half portion via the refrigerant passage 32 a.
  • the refrigerant introduced into one end side half portion of the upper front side refrigerant passage 32 a flows downward through a plurality of heat exchanging tubes (fourth path P 4 ) disposed at one end side half portion (right side half portion) among the front row heat exchanging tubes 1 a to be introduced into one end side half portion of the front side refrigerant passage 32 a in the lower header tank 10 .
  • the liquid phase refrigerant exchanges heat with the ambient air to be heated and evaporated while passing through the first path (P 1 ) to the fourth path (P 4 ).
  • This evaporated gas phase refrigerant flows out of the refrigerant outlet 56 a and the refrigerant outlet tube 61 a.
  • the gas phase refrigerant separated by the gas-liquid separator 70 is introduced into the bypass pipe 83 via the gas phase outlet 73 . Then, the gas phase refrigerant is introduced into the refrigerant outlet pipe 61 a via the bypass pipe 83 .
  • the dispersion refrigerant bypassed the third and fourth paths P 3 and P 4 is merged with the main refrigerant passed the third and fourth paths P 3 and P 4 in the refrigerant outlet pipe 61 a . Thereafter, the merged refrigerant will be returned to the compressor.
  • the entire refrigerant passage from the refrigerant inlet 51 b of the evaporation apparatus to the refrigerant outlet 56 a forms an evaporator passage.
  • the refrigerant component high in vapor quality i.e., a gas phase refrigerant
  • the refrigerant component high in vapor quality i.e., a gas phase refrigerant
  • This flowage of this gas phase component causes deterioration of the vapor quality as the entire refrigerant.
  • the refrigerant low in vapor quality can be passed through the third and fourth paths P 3 and P 4 , heat exchanging can be performed by the low vapor quality refrigerant through out the entire paths P 1 to P 4 .
  • the gas phase refrigerant high in vapor quality is discharged at a part of the evaporator passage.
  • FIG. 9A it becomes possible to prevent deterioration of the rate of the liquid refrigerant with respect to the gas phase refrigerant.
  • FIG. 9B in the evaporator passage, heat exchanging can be performed almost at the entire region of the evaporator passage at lower vapor quality in a state in which the refrigerant vapor quality does not largely exceed a predetermined value, resulting in an enhanced heat exchanging efficiency and heat exchanging performance.
  • the gas phase refrigerant it is preferable to discharge (flow out) the gas phase refrigerant at the time when the vapor quality of the refrigerant passing through the first and second paths P 1 and P 2 reaches the range of 0.3 to 0.7, more preferably 0.4 to 0.6.
  • a gas-liquid separator before the evaporator 100 so that only the liquid phase refrigerant is introduced into the evaporator 100 and the gas phase refrigerant is merged with the refrigerant passed in the evaporator passage at the vicinity of the evaporator outlet. That is, in this structure, since only the liquid phase refrigerant low in vapor quality can be introduced into the evaporator 100 , the raising of refrigerant vapor quality in the evaporator passage can be prevented more assuredly, further enhancing the heat exchanging efficiency.
  • the refrigerant can be sufficiently filled in the longitudinal direction of the header tank, enhancing the dispersiblity in the heat exchanging passages, which further enhances the heat exchanging performance.
  • the explanation is directed to the case in which only one intermediate outlet (gas phase outlet 73 ) for discharging the refrigerant high in vapor quality is provided.
  • the present invention is not limited to the above, and two or more intermediate outlets can be provided.
  • the explanation is directed to the case in which the intermediate outlet is provided between the second path and the third path.
  • the present invention is not limited to the above, and the intermediate outlet can be provided at any portion on the evaporator passage.
  • the intermediate outlet can be provided between the first and second paths, or the third and fourth paths.
  • the number of paths is not limited to the aforementioned embodiment, and can be less than three or more than five.
  • the explanation is directed to the case in which the present invention is applied to the header type evaporator.
  • the present invention is not limited to the above, and can be applied to another evaporators, such as a serpentine tube type evaporator, a laminate tube type evaporator, a drawn cup type evaporator, or an evaporator having plate fins.
  • the refrigerant high in vapor quality among the refrigerant which is being raised in vapor quality during the evaporation procedure flows out at the intermediate position of the evaporator passage, excessive raising in vapor quality of the refrigerant can be prevented during the evaporation procedure, enabling the heat exchanging of the refrigerant almost at the entire region of the evaporator passage in a state in which the vapor quality of the refrigerant is low. This prevents deterioration of the coefficient of heat transfer, resulting in enhanced heat exchanging efficiency and heat exchanging performance.
  • the present invention can be utilized in a refrigeration system for use in a refrigeration cycle or the like using CO 2 as a refrigerant. It also can be utilized in an evaporator to be employed in the refrigeration system, a method of evaporating a refrigerant and a vehicle equipped with the refrigeration system.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US10/555,311 2003-05-09 2004-04-30 Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant Abandoned US20060288733A1 (en)

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US10/555,311 US20060288733A1 (en) 2003-05-09 2004-04-30 Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant

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JP2003132044A JP2004333065A (ja) 2003-05-09 2003-05-09 蒸発器、冷凍システム、そのシステムを備えた車両及び冷媒の蒸発方法
JP2003-132044 2003-05-09
US47830303P 2003-06-16 2003-06-16
PCT/JP2004/006401 WO2004099686A1 (en) 2003-05-09 2004-04-30 Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant
US10/555,311 US20060288733A1 (en) 2003-05-09 2004-04-30 Evaporator refrigeration system vehicle equipped with said system and method of evaporating refrigerant

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050235691A1 (en) * 2004-04-08 2005-10-27 Denso Corporation Refrigerant evaporator
WO2008110249A1 (de) * 2007-03-15 2008-09-18 Behr Gmbh & Co. Kg Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediums
EP2037203A2 (en) * 2007-09-11 2009-03-18 Wai Kwan Cheung Condenser assembly
US20100126213A1 (en) * 2007-06-15 2010-05-27 Tsinghua University Liquid-Vapor Separating Method and a Liquid-Vapor Separating Type Evaporator
US9551533B2 (en) 2012-07-17 2017-01-24 Calsonic Kansei Corporation Heat exchanger unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5114771B2 (ja) * 2007-05-29 2013-01-09 株式会社ケーヒン・サーマル・テクノロジー 熱交換器
CN102954629A (zh) * 2012-11-13 2013-03-06 顺德职业技术学院 控制干度强化传热蒸发器

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JPS5736580U (zh) * 1980-08-08 1982-02-26
JPS58277U (ja) * 1981-06-25 1983-01-05 松下電器産業株式会社 冷凍サイクル
JPH1151510A (ja) * 1997-07-30 1999-02-26 Sanyo Electric Co Ltd 蒸発器
JP4686062B2 (ja) * 2000-06-26 2011-05-18 昭和電工株式会社 エバポレータ
JP4718716B2 (ja) * 2001-05-01 2011-07-06 三菱重工業株式会社 ガスクーラ及び車載用空調装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050235691A1 (en) * 2004-04-08 2005-10-27 Denso Corporation Refrigerant evaporator
US7367203B2 (en) * 2004-04-08 2008-05-06 Denso Corporation Refrigerant evaporator
WO2008110249A1 (de) * 2007-03-15 2008-09-18 Behr Gmbh & Co. Kg Wärmeübertrager zum verdampfen eines flüssigen teils eines mediums mit bypass für einen dampfförmigen teil des mediums
US20100126213A1 (en) * 2007-06-15 2010-05-27 Tsinghua University Liquid-Vapor Separating Method and a Liquid-Vapor Separating Type Evaporator
EP2037203A2 (en) * 2007-09-11 2009-03-18 Wai Kwan Cheung Condenser assembly
EP2037203A3 (en) * 2007-09-11 2009-09-09 Wai Kwan Cheung Condenser assembly
US9551533B2 (en) 2012-07-17 2017-01-24 Calsonic Kansei Corporation Heat exchanger unit

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CN1784576A (zh) 2006-06-07
EP1623166A4 (en) 2009-01-28
WO2004099686A1 (en) 2004-11-18
JP2004333065A (ja) 2004-11-25
EP1623166A1 (en) 2006-02-08

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