JP2006329537A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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JP2006329537A
JP2006329537A JP2005154461A JP2005154461A JP2006329537A JP 2006329537 A JP2006329537 A JP 2006329537A JP 2005154461 A JP2005154461 A JP 2005154461A JP 2005154461 A JP2005154461 A JP 2005154461A JP 2006329537 A JP2006329537 A JP 2006329537A
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temperature side
heat exchange
high temperature
exchange tube
side heat
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JP2005154461A
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Tadashi Ikeda
直史 池田
Junichiro Kasuya
潤一郎 粕谷
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Sanden Corp
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Sanden Corp
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    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • 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
    • F28D2001/0253—Particular components
    • F28D2001/026—Cores
    • F28D2001/028—Cores with empty spaces or with additional elements integrated into the cores

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturizable heat exchanger reduced in manufacturing cost. <P>SOLUTION: A high temperature side outflow header 63 is provided with through-holes 63b allowing respective low temperature side heat exchanger tubes 64 to pass through, and a low temperature side outflow header 66 is provided with through holes 66b allowing respective high temperature side heat exchanger tubes 61 to pass through. The respective high temperature side heat exchanger tubes 61 and the respective low temperature side heat exchanger tubes 64 can thereby be connected to a high temperature side inflow header 62, the high temperature side outflow header 63, a low temperature side inflow header 65 and the low temperature side outflow header 66 by allowing the respective low temperature side heat exchanger tubes 64 and the respective high temperature side heat exchanger tubes 61 to pass through the through holes 63b, 66b provided in the high temperature side outflow header 63 and the low temperature side outflow header 66. As a result, the heat exchanger can be miniaturized, and the manufacturing cost can be reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、二酸化炭素を冷媒として用いた超臨界蒸気圧縮サイクルにおいて、放熱器から流出する高温高圧冷媒と圧縮機に吸入される低温低圧冷媒を熱交換するための内部熱交換器として用いられる熱交換器に関するものである。   The present invention relates to a heat used as an internal heat exchanger for exchanging heat between a high-temperature high-pressure refrigerant flowing out from a radiator and a low-temperature low-pressure refrigerant sucked into the compressor in a supercritical vapor compression cycle using carbon dioxide as a refrigerant. It relates to an exchanger.

従来、この種の熱交換器としては、高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温高圧冷媒と低温側熱交換チューブを流通する低温流体を熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層したものが知られている（例えば、特許文献１参照）。   Conventionally, as this type of heat exchanger, at least one high temperature side heat exchange tube through which a high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, and a low temperature fluid circulates. It has at least one low temperature side heat exchange tube and a pair of low temperature side headers connected to both ends of the low temperature side heat exchange tube, and distributes the high temperature and high pressure refrigerant that flows through the high temperature side heat exchange tube and the low temperature side heat exchange tube There is known a structure in which a high temperature side heat exchange tube and a low temperature side heat exchange tube are laminated so that heat exchange can be performed on a low temperature fluid (for example, see Patent Document 1).

この熱交換器は、二酸化炭素を冷媒として用いた超臨界蒸気圧縮サイクルにおいて、蒸発器に流入する冷媒と蒸発器から流出する冷媒のエンタルピ差を増大させるために、放熱器から流出する高温高圧の冷媒と圧縮機に吸入される低温低圧の冷媒を熱交換させるための内部熱交換器として用いられる。
特開２００２−３４０４８５号公報 In a supercritical vapor compression cycle using carbon dioxide as a refrigerant, this heat exchanger has a high temperature and high pressure that flows out of the radiator in order to increase the enthalpy difference between the refrigerant flowing into the evaporator and the refrigerant flowing out of the evaporator. It is used as an internal heat exchanger for exchanging heat between the refrigerant and the low-temperature and low-pressure refrigerant sucked into the compressor.
JP 2002-340485 A

しかしながら、従来の熱交換器では、高温側熱交換チューブ及び低温側熱交換チューブをそれぞれ高温側ヘッダ及び低温側ヘッダに接続する際に、高温側ヘッダ及び低温側ヘッダが互いに接触しないように高温側熱交換チューブ及び低温側熱交換チューブに曲げ加工を施したり、高温側ヘッダ及び低温側ヘッダを互いに接触しない形状に形成したりしなければならず、外形寸法が大きくなるとともに、加工工程が増加して製造コストが高くなるという問題点があった。   However, in the conventional heat exchanger, when the high temperature side heat exchange tube and the low temperature side heat exchange tube are connected to the high temperature side header and the low temperature side header, respectively, the high temperature side header and the low temperature side header are not in contact with each other. The heat exchange tube and the low temperature side heat exchange tube must be bent, or the high temperature side header and the low temperature side header must be formed in a shape that does not contact each other. Therefore, there was a problem that the manufacturing cost was high.

本発明は前記問題点に鑑みてなされたものであり、その目的とするところは、小型化を図ることができるとともに、製造コストの低減を図ることのできる熱交換器を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a heat exchanger that can be reduced in size and can reduce manufacturing costs.

本発明は前記目的を達成するために、高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、前記各高温側ヘッダの一方に、各低温側ヘッダの一方に接続される低温側熱交換チューブが貫通する貫通孔を形成し、各低温側ヘッダの他方に、各高温側ヘッダの他方に接続される高温側熱交換チューブが貫通する貫通孔を形成している。   In order to achieve the above object, the present invention circulates at least one high temperature side heat exchange tube through which a high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, and a low temperature fluid. It includes at least one low temperature side heat exchange tube and a pair of low temperature side headers connected to both ends of the low temperature side heat exchange tube, and distributes the high temperature fluid and the low temperature side heat exchange tube that circulate through the high temperature side heat exchange tube. A heat exchanger in which a high-temperature side heat exchange tube and a low-temperature side heat exchange tube are stacked so that heat exchange with a low-temperature fluid is possible, and the low-temperature side connected to one of the high-temperature side headers and one of the low-temperature side headers A through hole through which the heat exchange tube passes is formed, and a through hole through which the high temperature side heat exchange tube connected to the other of each high temperature side header passes is formed in the other of each low temperature side header.

また、本発明は、高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、前記各高温側ヘッダまたは各低温側ヘッダに、各低温側ヘッダに接続される低温側熱交換チューブまたは各高温側ヘッダに接続される高温側熱交換チューブが貫通する貫通孔を形成している。   The present invention also provides at least one high temperature side heat exchange tube through which a high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, and at least one low temperature side through which the low temperature fluid flows. A heat exchange tube and a pair of low temperature side headers connected to both ends of the low temperature side heat exchange tube, and heats the high temperature fluid flowing through the high temperature side heat exchange tube and the low temperature fluid flowing through the low temperature side heat exchange tube. A heat exchanger in which a high temperature side heat exchange tube and a low temperature side heat exchange tube are laminated so as to be replaceable, and each of the high temperature side header or each low temperature side header has a low temperature side heat exchange tube connected to each low temperature side header or A through hole through which the high temperature side heat exchange tube connected to each high temperature side header passes is formed.

これにより、貫通孔に低温側熱交換チューブ及び高温側熱交換チューブを貫通させることにより、各高温側ヘッダ及び各低温側ヘッダにそれぞれ高温側熱交換チューブ及び低温側熱交換チューブが接続されることから、高温側ヘッダ及び低温側ヘッダが互いに接触しないように高温側熱交換チューブ及び低温側熱交換チューブに曲げ加工を施したり、各高温側ヘッダ及び各低温側ヘッダをそれぞれ互いに接触しない形状に形成する必要がない。   Thus, the high temperature side heat exchange tube and the low temperature side heat exchange tube are connected to each high temperature side header and each low temperature side header by passing the low temperature side heat exchange tube and the high temperature side heat exchange tube through the through hole. The high temperature side heat exchange tube and the low temperature side heat exchange tube are bent so that the high temperature side header and the low temperature side header do not contact each other, and each high temperature side header and each low temperature side header are formed into shapes that do not contact each other. There is no need to do.

また、本発明は、高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、前記各低温側ヘッダに、各高温側ヘッダに接続される低温側熱交換チューブが貫通する貫通孔を形成し、各高温側ヘッダの一方と各低温側ヘッダの一方との間に、高温側熱交換チューブを流通する高温流体と外部の空気とを熱交換させることにより高温流体を放熱させることが可能な放熱部を設けている。   The present invention also provides at least one high temperature side heat exchange tube through which a high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, and at least one low temperature side through which the low temperature fluid flows. A heat exchange tube and a pair of low temperature side headers connected to both ends of the low temperature side heat exchange tube, and heats the high temperature fluid flowing through the high temperature side heat exchange tube and the low temperature fluid flowing through the low temperature side heat exchange tube. A heat exchanger in which a high temperature side heat exchange tube and a low temperature side heat exchange tube are laminated so as to be replaceable, and each low temperature side header has a through-hole through which a low temperature side heat exchange tube connected to each high temperature side header passes. And heat is exchanged between the high temperature fluid flowing through the high temperature side heat exchange tube and the external air between one of the high temperature side headers and one of the low temperature side headers. It is provided with a heat radiating portion capable.

これにより、各高温側ヘッダの一方と各低温側ヘッダの一方との間に放熱部が設けられることから、蒸気圧縮サイクルの放熱器及び内部熱交換器が一体に構成される。   Thereby, since a heat radiating part is provided between one of each high temperature side header and one of each low temperature side header, the heat radiator and internal heat exchanger of a vapor compression cycle are constituted in one.

また、本発明は、高温流体が流通する複数の高温側熱交換チューブと、各高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する複数の低温側熱交換チューブと、各低温側熱交換チューブの両端側に接続された一対の低温側熱交換ヘッダとを備え、一部の高温側熱交換チューブを流通する高温流体と各低温側熱交換チューブを流通する低温流体とを熱交換可能に一部の高温側熱交換チューブと各低温側熱交換チューブを積層した熱交換器であって、前記各低温側ヘッダに、低温流体と熱交換する高温流体が流通する高温側熱交換チューブが貫通する貫通孔を形成し、各高温側ヘッダの一方と各低温側ヘッダの一方との間と、前記一部の高温側熱交換チューブ以外の高温側熱交換チューブが接続された各高温側ヘッダの間に、高温側熱交換チューブを流通する高温流体と外部の空気とを熱交換させることにより高温流体を放熱させることが可能な放熱部を設けている。   The present invention also provides a plurality of high temperature side heat exchange tubes through which a high temperature fluid flows, a pair of high temperature side headers connected to both ends of each high temperature side heat exchange tube, and a plurality of low temperature side heats through which a low temperature fluid flows. It has an exchange tube and a pair of low temperature side heat exchange headers connected to both ends of each low temperature side heat exchange tube, and distributes the high temperature fluid flowing through some of the high temperature side heat exchange tubes and each low temperature side heat exchange tube A heat exchanger in which a part of the high temperature side heat exchange tubes and each of the low temperature side heat exchange tubes are stacked so that heat exchange with the low temperature fluid is performed, and each of the low temperature side headers has a high temperature fluid that exchanges heat with the low temperature fluid. A high-temperature side heat exchange tube other than the one part of the high-temperature side heat exchange tubes is formed between the one of the high-temperature side headers and one of the low-temperature side headers. Connected to each high temperature side During the header is provided with a heat radiating portion capable of radiating high temperature fluid by a high temperature fluid and the external air flowing through the hot-side heat exchanger tubes to heat exchange.

これにより、各高温側ヘッダの一方と各低温側ヘッダの一方との間と、一部の高温側熱交換チューブ以外の高温側熱交換チューブが接続された各高温側ヘッダとの間に放熱部が設けられることから、蒸気圧縮サイクルの放熱器及び内部熱交換器が一体に構成される。   Thereby, between one of each high temperature side header and one of each low temperature side header, and each high temperature side header to which high temperature side heat exchange tubes other than some high temperature side heat exchange tubes are connected Therefore, the radiator of the vapor compression cycle and the internal heat exchanger are configured integrally.

本発明によれば、高温側ヘッダ及び低温側ヘッダが互いに接触しないように高温側熱交換チューブ及び低温側熱交換チューブに曲げ加工を施したり、各高温側ヘッダ及び各低温側ヘッダをそれぞれ互いに接触しない形状に形成する必要はなく、各高温側ヘッダ及び各低温側流入ヘッダにそれぞれ高温側熱交換チューブ及び低温側熱交換チューブを接続することができるので、熱交換器の小型化を図ることができるとともに、製造コストの低減を図ることができる。   According to the present invention, the high temperature side heat exchange tube and the low temperature side heat exchange tube are bent so that the high temperature side header and the low temperature side header do not contact each other, or each high temperature side header and each low temperature side header are in contact with each other. It is not necessary to form in a shape that does not need to be, and since the high temperature side heat exchange tube and the low temperature side heat exchange tube can be connected to each high temperature side header and each low temperature side inflow header, respectively, it is possible to reduce the size of the heat exchanger In addition, the manufacturing cost can be reduced.

また、蒸気圧縮サイクルの放熱器及び内部熱交換器が一体に構成することができるので、蒸気圧縮サイクル装置の小型化を図ることができる。   In addition, since the heat radiator and the internal heat exchanger of the vapor compression cycle can be integrally configured, the vapor compression cycle device can be downsized.

図１乃至図６は本発明の第１の実施形態を示すもので、図１は熱交換器の斜視図、図２は熱交換器が接続された冷媒回路図、図３は熱交換器の平面断面図、図４は熱交換器の正面断面図、図５は高温側熱交換チューブ及び低温側熱交換チューブを示す要部斜視図、図６は接続孔及び貫通孔を示す低温側流出ヘッダの要部正面断面図である。   1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view of a heat exchanger, FIG. 2 is a refrigerant circuit diagram to which a heat exchanger is connected, and FIG. 3 is a heat exchanger. 4 is a front cross-sectional view of the heat exchanger, FIG. 5 is a perspective view of the main part showing the high temperature side heat exchange tube and the low temperature side heat exchange tube, and FIG. 6 is a low temperature side outflow header showing the connection hole and the through hole. It is principal part front sectional drawing of.

図２は本発明の熱交換器を備えた超臨界蒸気圧縮装置の冷媒回路１を示すものであり、圧縮機２、放熱器３、膨張弁４、蒸発器５、熱交換器６（内部熱交換器）が銅管等の冷媒流通用の配管によって接続されている。冷媒回路１には冷媒として高温高圧側が超臨界状態となる二酸化炭素が充填され、熱交換器６は放熱器３から流出する高温高圧冷媒と圧縮機２に吸入される低温低圧冷媒を熱交換するようになっている。   FIG. 2 shows a refrigerant circuit 1 of a supercritical vapor compression apparatus provided with a heat exchanger according to the present invention, which includes a compressor 2, a radiator 3, an expansion valve 4, an evaporator 5, a heat exchanger 6 (internal heat). The exchanger is connected by piping for refrigerant circulation such as a copper pipe. The refrigerant circuit 1 is filled with carbon dioxide which is in a supercritical state on the high temperature and high pressure side as a refrigerant, and the heat exchanger 6 exchanges heat between the high temperature and high pressure refrigerant flowing out of the radiator 3 and the low temperature and low pressure refrigerant sucked into the compressor 2. It is like that.

この熱交換器６は、高温高圧の冷媒が流通する複数の高温側熱交換チューブ６１と、各高温側熱交換チューブ６１の冷媒流入側に接続された高温側流入ヘッダ６２と、各高温側熱交換チューブ６１の冷媒流出側に接続された高温側流出ヘッダ６３と、低温低圧の冷媒が流通する複数の低温側熱交換チューブ６４と、各低温側熱交換チューブ６４の冷媒流入側に接続された低温側流入ヘッダ６５と、各低温側熱交換チューブ６４の冷媒流出側に接続された低温側流出ヘッダ６６とを備えている。   The heat exchanger 6 includes a plurality of high temperature side heat exchange tubes 61 through which high temperature and high pressure refrigerant flows, a high temperature side inflow header 62 connected to the refrigerant inflow side of each high temperature side heat exchange tube 61, and each high temperature side heat. The high temperature side outflow header 63 connected to the refrigerant outflow side of the exchange tube 61, a plurality of low temperature side heat exchange tubes 64 through which low temperature and low pressure refrigerant flows, and the refrigerant inflow side of each low temperature side heat exchange tube 64 are connected. A low temperature side inflow header 65 and a low temperature side outflow header 66 connected to the refrigerant outflow side of each low temperature side heat exchange tube 64 are provided.

各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４は、熱伝導率の高いアルミニウム等の金属を断面略楕円形状に形成した扁平チューブからなり、その内部には、断面円形状に形成された冷媒通路６１ａ，６４ａが断面長手方向に複数設けられている。各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４は、断面略楕円形状の扁平チューブ以外に、板状部材の内部に冷媒通路が形成されたもの等、熱交換が可能な面を有しているものであればよい。冷媒通路６１ａ，６４ａは、断面円形状の冷媒通路６１ａ，６４ａを扁平チューブの断面長手方向に複数設ける以外に、断面矩形状の冷媒通路を扁平チューブの断面長手方向に複数設けるようにしてもよいし、一つの冷媒通路を扁平チューブの内部に設けるようにしてもよい。各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４は、図５に示すように、それぞれ交互に積層され、各高温側熱交換チューブ６１を流通する冷媒と各低温側熱交換チューブ６４を流通する冷媒を熱交換するようになっている。また、各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４は、それぞれ冷媒の流通方向に同一の長さに形成され、それぞれの端部が所定長さだけずれるように交互に積層されている。   Each of the high temperature side heat exchange tubes 61 and each of the low temperature side heat exchange tubes 64 is a flat tube in which a metal having a high thermal conductivity such as aluminum is formed in a substantially elliptical cross section, and is formed in a circular cross section in the inside thereof. A plurality of refrigerant passages 61a and 64a are provided in the longitudinal direction of the cross section. Each of the high temperature side heat exchange tubes 61 and each of the low temperature side heat exchange tubes 64 has a surface capable of heat exchange, such as a flat member having a refrigerant passage formed inside a plate member, in addition to a flat tube having a substantially elliptical cross section. Anything can be used. The refrigerant passages 61a and 64a may be provided with a plurality of rectangular refrigerant passages in the cross-sectional longitudinal direction of the flat tube, in addition to providing a plurality of circular refrigerant passages 61a and 64a in the cross-sectional longitudinal direction of the flat tube. However, one refrigerant passage may be provided inside the flat tube. As shown in FIG. 5, the high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64 are alternately stacked, and the refrigerant flowing through the high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64 are connected to each other. Heat is exchanged for the circulating refrigerant. The high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64 are formed to have the same length in the refrigerant flow direction, and are alternately stacked so that the respective end portions are shifted by a predetermined length. Yes.

高温側流入ヘッダ６２、高温側流出ヘッダ６３、低温側流入ヘッダ６５及び低温側流出ヘッダ６６は、それぞれ各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４が積層される方向に延びる中空円筒状に形成されている。また、高温側流入ヘッダ６２、高温側流出ヘッダ６３、低温側流入ヘッダ６５及び低温側流出ヘッダ６６は、それぞれ各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４の冷媒通路の延びる方向に配置され、高温側流入ヘッダ６２と高温側流出ヘッダ６３の間の高温側流入ヘッダ６２側に低温側流出ヘッダ６６が配置され、高温側流出ヘッダ６３の外側に低温側流入ヘッダ６５が配置されている。 高温側流入ヘッダ６２には、各高温側熱交換チューブ６１の一端が接続される複数の接続孔６２ａが設けられている。また、高温側流入ヘッダ６２には、高温冷媒流入口６２ｂが設けられ、放熱器３の流出側が接続されている。   The high temperature side inflow header 62, the high temperature side outflow header 63, the low temperature side inflow header 65, and the low temperature side outflow header 66 are hollow cylinders extending in the direction in which the high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64 are laminated, respectively. It is formed in a shape. Moreover, the high temperature side inflow header 62, the high temperature side outflow header 63, the low temperature side inflow header 65, and the low temperature side outflow header 66 are in the extending direction of the refrigerant passages of the high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64, respectively. The low temperature side outflow header 66 is disposed on the high temperature side inflow header 62 side between the high temperature side inflow header 62 and the high temperature side outflow header 63, and the low temperature side inflow header 65 is disposed outside the high temperature side outflow header 63. Yes. The high temperature side inflow header 62 is provided with a plurality of connection holes 62a to which one end of each high temperature side heat exchange tube 61 is connected. Further, the high temperature side inflow header 62 is provided with a high temperature refrigerant inlet 62b, and the outflow side of the radiator 3 is connected thereto.

高温側流出ヘッダ６３には、各高温側熱交換チューブ６１の他端が接続される複数の接続孔６３ａが設けられるとともに、各低温側熱交換チューブ６４を貫通させるための複数の貫通孔６３ｂが設けられている。また、高温側流出ヘッダ６３には、高温冷媒流出口６３ｃが設けられ、膨張弁４を介して蒸発器５の流入側に接続されている。   The high temperature side outflow header 63 is provided with a plurality of connection holes 63a to which the other ends of the high temperature side heat exchange tubes 61 are connected, and a plurality of through holes 63b for allowing the low temperature side heat exchange tubes 64 to pass therethrough. Is provided. Further, the high temperature side outflow header 63 is provided with a high temperature refrigerant outlet 63 c and is connected to the inflow side of the evaporator 5 through the expansion valve 4.

低温側流入ヘッダ６５には、各低温側熱交換チューブ６４の一端が接続される複数の接続孔６５ａが設けられている。また、低温側流入ヘッダ６５には、低温冷媒流入口６５ｂが設けられ、蒸発器５の流出側が接続されている。   The low temperature side inflow header 65 is provided with a plurality of connection holes 65a to which one end of each low temperature side heat exchange tube 64 is connected. Further, the low temperature side inflow header 65 is provided with a low temperature refrigerant inlet 65b, and the outflow side of the evaporator 5 is connected thereto.

低温側流出ヘッダ６６には、各低温側熱交換チューブ６４の他端が接続される複数の接続孔６６ａが設けられるとともに、各高温側熱交換チューブ６１を貫通させるための複数の貫通孔６６ｂが設けられている。また、低温側流出ヘッダ６６には低温冷媒流出口６６ｃが設けられ、圧縮機２の吸入側が接続されている。   The low temperature side outflow header 66 is provided with a plurality of connection holes 66a to which the other ends of the respective low temperature side heat exchange tubes 64 are connected, and a plurality of through holes 66b for allowing the high temperature side heat exchange tubes 61 to pass therethrough. Is provided. Further, the low temperature side outflow header 66 is provided with a low temperature refrigerant outlet 66c, to which the suction side of the compressor 2 is connected.

以上のように構成された熱交換器において、圧縮機２から吐出された高温高圧の冷媒は、放熱器３を流通して空気と熱交換することにより冷却された後、熱交換器６の高温側流入ヘッダ６２に高温冷媒流入口６２ｂを介して流入する。高温側流入ヘッダ６２に流入した冷媒は、分流されて各高温側熱交換チューブ６１を流通し、低温側流出ヘッダ６６及び各低温側熱交換チューブ６４を流通する冷媒と熱交換することにより冷却されて高温側流出ヘッダ６３に流入する。高温側流出ヘッダ６３の高温冷媒流出口６３ｃから流出した冷媒は、膨張弁４によって減圧された後に蒸発器５を流通し、空気と熱交換することにより加熱される。蒸発器５から流出した冷媒は、熱交換器６の低温側流入ヘッダ６５に低温冷媒流入口６５ｂを介して流入した後、分流されて各低温側熱交換チューブ６４を流通し、高温側流出ヘッダ６３及び各高温側熱交換チューブ６１を流通する冷媒と熱交換することにより加熱されて低温側流出ヘッダ６６に流入する。低温側流出ヘッダ６６の低温冷媒流出口６６ｃから流出した冷媒は、圧縮機２に吸入される。このような冷媒の循環によって、蒸発器５に流入する冷媒と蒸発器５から流出する冷媒のエンタルピ差を増大させることが可能となる。   In the heat exchanger configured as described above, the high-temperature and high-pressure refrigerant discharged from the compressor 2 is cooled by circulating heat through the radiator 3 and exchanging heat with air, and then the high temperature of the heat exchanger 6. It flows into the side inflow header 62 through the high-temperature refrigerant inflow port 62b. The refrigerant flowing into the high temperature side inflow header 62 is diverted and flows through each high temperature side heat exchange tube 61, and is cooled by exchanging heat with the refrigerant flowing through the low temperature side outflow header 66 and each low temperature side heat exchange tube 64. And flows into the high temperature side outflow header 63. The refrigerant flowing out from the high temperature refrigerant outlet 63c of the high temperature side outflow header 63 is heated by exchanging heat with the air after flowing through the evaporator 5 after being decompressed by the expansion valve 4. The refrigerant flowing out of the evaporator 5 flows into the low temperature side inflow header 65 of the heat exchanger 6 through the low temperature refrigerant inflow port 65b, and then is divided to flow through each of the low temperature side heat exchange tubes 64, and the high temperature side outflow header. 63 and the high temperature side heat exchange tubes 61 are heated by exchanging heat with the refrigerant flowing through the high temperature side heat exchange tubes 61 and flow into the low temperature side outflow header 66. The refrigerant that has flowed out from the low-temperature refrigerant outlet 66 c of the low-temperature side outflow header 66 is sucked into the compressor 2. Such refrigerant circulation makes it possible to increase the enthalpy difference between the refrigerant flowing into the evaporator 5 and the refrigerant flowing out of the evaporator 5.

このように、本実施形態の熱交換器によれば、高温側流出ヘッダ６３に各低温側熱交換チューブ６４を貫通させる貫通孔６３ｂを設けるとともに、低温側流出ヘッダ６６に各高温側熱交換チューブ６１を貫通させる貫通孔６６ｂを設けたので、高温側流出ヘッダ６３及び低温側流出ヘッダ６６に設けられた貫通孔６３ｂ，６６ｂに各低温側熱交換チューブ６４及び各高温側熱交換チューブ６１を貫通させることにより、高温側流入ヘッダ６２と低温側流出ヘッダ６６、高温側流出ヘッダ６３と低温側流入ヘッダ６５が互いに接触しないように高温側熱交換チューブ６１及び低温側熱交換チューブ６４に曲げ加工を施したり、高温側流入ヘッダ６２、高温側流出ヘッダ６３、低温側流入ヘッダ６５及び低温側流出ヘッダ６６を互いに接触しない形状に形成する必要はなく、高温側流入ヘッダ６２、高温側流出ヘッダ６３、低温側流入ヘッダ６５及び低温側流出ヘッダ６６にそれぞれ各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４を接続することができ、熱交換器の小型化を図ることができるとともに、製造コストの低減を図ることができる。   As described above, according to the heat exchanger of the present embodiment, the high temperature side outflow header 63 is provided with the through holes 63b that allow the low temperature side outflow headers 64 to pass through, and the low temperature side outflow header 66 is provided with the high temperature side heat exchange tubes. Since the through-hole 66b that penetrates 61 is provided, the low-temperature side heat exchange tubes 64 and the high-temperature side heat exchange tubes 61 are passed through the through-holes 63b and 66b provided in the high-temperature side outflow header 63 and the low-temperature side outflow header 66, respectively. As a result, the high temperature side heat exchange tube 61 and the low temperature side heat exchange tube 64 are bent so that the high temperature side inflow header 62 and the low temperature side outflow header 66 do not contact each other. Or the high temperature side inflow header 62, the high temperature side outflow header 63, the low temperature side inflow header 65, and the low temperature side outflow header 66 are not in contact with each other. The high temperature side inflow header 62, the high temperature side outflow header 63, the low temperature side inflow header 65, and the low temperature side outflow header 66 are connected to the high temperature side heat exchange tubes 61 and the low temperature side heat exchange tubes 64, respectively. Thus, the heat exchanger can be miniaturized and the manufacturing cost can be reduced.

また、各高温側熱交換チューブ６１及び低温側熱交換チューブ６４を、冷媒の流通方向の長さを同一に形成し、互いに冷媒の流通方向に所定距離ずらして積層するようにしたので、各高温側熱交換チューブ６１及び各低温側熱交換チューブ６４として同一の部材を用いることができ、部品の共通化を図ることができる。   In addition, since the high-temperature side heat exchange tubes 61 and the low-temperature side heat exchange tubes 64 are formed with the same length in the refrigerant flow direction and are shifted from each other by a predetermined distance in the refrigerant flow direction, The same member can be used as the side heat exchange tube 61 and each low temperature side heat exchange tube 64, and parts can be shared.

図７乃至図８は本発明の第２の実施形態を示すもので、図７は熱交換器の正面断面図、図８は高温側熱交換チューブ及び低温側熱交換チューブの要部斜視図である。尚、前記実施形態と同様の構成部分には同一の符号を付して示す。   FIGS. 7 to 8 show a second embodiment of the present invention. FIG. 7 is a front sectional view of a heat exchanger, and FIG. 8 is a perspective view of a main part of a high temperature side heat exchange tube and a low temperature side heat exchange tube. is there. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

本実施形態の熱交換器７は、高温側流入ヘッダ７２と高温側流出ヘッダ７３の間に低温側流入ヘッダ７５及び低温側流出ヘッダ７６が配置され、低温側流入ヘッダ７５及び低温側流出ヘッダ７６にそれぞれ高温側熱交換チューブ７１を貫通させる複数の貫通孔７５ｂ，７６ｂが設けられている。また、低温側流入ヘッダ７５及び低温側流出ヘッダ７６を流通する冷媒の圧力は高温側流入ヘッダ７２と高温側流出ヘッダ７３を流通する冷媒の圧力よりも小さくなるため、低温側流入ヘッダ７５及び低温側流出ヘッダ７６を形成する部材の厚さは、高温側流入ヘッダ７２及び高温側流出ヘッダ７３を形成する部材と比較して薄く形成されている。更に、各低温側熱交換チューブ７４を流通する冷媒の圧力は、高温側熱交換チューブ７１を流通する冷媒の圧力よりも小さくなるため、各低温側熱交換チューブ７４を形成する部材の厚さは各高温側熱交換チューブ７１を形成する部材と比較して薄く形成されている。また、各低温側熱交換チューブ７４と各高温側熱交換チューブ７１は、それぞれを形成する部材の厚さを同じ厚さに形成し、各高温側熱交換チューブ７１の冷媒通路の内径と比較して各低温側熱交換チューブ７４の冷媒通路の内径を大きく形成するようにしてもよい。   In the heat exchanger 7 of the present embodiment, a low temperature side inflow header 75 and a low temperature side outflow header 76 are arranged between the high temperature side inflow header 72 and the high temperature side outflow header 73, and the low temperature side inflow header 75 and the low temperature side outflow header 76. Are provided with a plurality of through holes 75b, 76b through which the high temperature side heat exchange tube 71 passes. Further, since the pressure of the refrigerant flowing through the low temperature side inflow header 75 and the low temperature side outflow header 76 is smaller than the pressure of the refrigerant flowing through the high temperature side inflow header 72 and the high temperature side outflow header 73, the low temperature side inflow header 75 and the low temperature. The thickness of the member forming the side outflow header 76 is thinner than the members forming the high temperature side inflow header 72 and the high temperature side outflow header 73. Further, since the pressure of the refrigerant flowing through each low-temperature side heat exchange tube 74 is smaller than the pressure of the refrigerant flowing through the high-temperature side heat exchange tube 71, the thickness of the member forming each low-temperature side heat exchange tube 74 is It is formed thinner than the member forming each high temperature side heat exchange tube 71. In addition, each low temperature side heat exchange tube 74 and each high temperature side heat exchange tube 71 are formed to have the same thickness, and compared with the inner diameter of the refrigerant passage of each high temperature side heat exchange tube 71. Thus, the inner diameter of the refrigerant passage of each low-temperature side heat exchange tube 74 may be formed large.

以上のように構成された熱交換器において、圧縮機２から吐出された高温高圧の冷媒は前記第１の実施形態と同様に流通することにより、蒸発器５に流入する冷媒と蒸発器５から流出する冷媒のエンタルピ差を増大させることが可能となる。   In the heat exchanger configured as described above, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows in the same manner as in the first embodiment, so that the refrigerant flowing into the evaporator 5 and the evaporator 5 It becomes possible to increase the enthalpy difference of the refrigerant flowing out.

このように、本実施形態の熱交換器によれば、低温側流入ヘッダ７５及び低温側流出ヘッダ７６に各高温側熱交換チューブ７１を貫通させる貫通孔７５ｂ，７６ｂを設けたので、低温側流入ヘッダ７５及び低温側流出ヘッダ７６に設けられた各貫通孔７５ｂ，７６ｂに各高温側熱交換チューブ７１を貫通させることにより、高温側流入ヘッダ７２と低温側流出ヘッダ７６、高温側流出ヘッダ７３と低温側流入ヘッダ７５が互いに接触しないように高温側熱交換チューブ７１及び低温側熱交換チューブ７４に曲げ加工を施したり、高温側流入ヘッダ７２、高温側流出ヘッダ７３、低温側流入ヘッダ７５及び低温側流出ヘッダ７６を互いに接触しない形状に形成する必要はなく、高温側流入ヘッダ７２、高温側流出ヘッダ７３、低温側流入ヘッダ７５及び低温側流出ヘッダ７６に各高温側熱交換チューブ７１及び各低温側熱交換チューブ７４を接続することができ、熱交換器の小型化を図ることができるとともに、製造コストの低減を図ることができる。また、低温側流入ヘッダ７５及び低温側流出ヘッダ７６をそれぞれ同一の部材とすることができ、部品の共通化を図ることができる。   As described above, according to the heat exchanger of the present embodiment, the low temperature side inflow header 75 and the low temperature side outflow header 76 are provided with the through holes 75b and 76b that allow the high temperature side heat exchange tubes 71 to pass through. The high temperature side inflow header 72, the low temperature side outflow header 76, the high temperature side outflow header 73, and the like by passing the high temperature side heat exchange tubes 71 through the through holes 75 b and 76 b provided in the header 75 and the low temperature side outflow header 76. The high temperature side heat exchange tube 71 and the low temperature side heat exchange tube 74 are bent so that the low temperature side inflow header 75 does not contact each other, or the high temperature side inflow header 72, the high temperature side outflow header 73, the low temperature side inflow header 75, and the low temperature side It is not necessary to form the side outflow headers 76 in a shape that does not contact each other, and the high temperature side inflow header 72, the high temperature side outflow header 73, and the low temperature side inflow header 5 and the low temperature side outflow header 76 can be connected to each high temperature side heat exchange tube 71 and each low temperature side heat exchange tube 74, so that the heat exchanger can be miniaturized and the manufacturing cost can be reduced. Can do. Moreover, the low temperature side inflow header 75 and the low temperature side outflow header 76 can be made into the same member, respectively, and parts can be shared.

尚、前記第２の実施形態では、低温側流入ヘッダ７５及び低温側流出ヘッダ７６にそれぞれ各高温側熱交換チューブ７１を貫通させる複数の貫通孔７５ｂ，７６ｂを設け、高温側流入ヘッダ７２と高温側流出ヘッダ７３の間に低温側流入ヘッダ７５及び低温側流出ヘッダ７６を配置したものを示したが、高温側流入ヘッダ７２及び高温側流出ヘッダ７３に各低温側熱交換チューブ７４を貫通させる貫通孔を設け、低温側流入ヘッダ７５と低温側流出ヘッダ７６の間に高温側流入ヘッダ７２及び高温側流出ヘッダ７３を配置するようにしてもよい。   In the second embodiment, the low temperature side inflow header 75 and the low temperature side outflow header 76 are provided with a plurality of through holes 75b and 76b that allow the high temperature side heat exchange tubes 71 to penetrate, respectively. Although the low temperature side inflow header 75 and the low temperature side outflow header 76 are arranged between the side outflow headers 73, the high temperature side inflow header 72 and the high temperature side outflow header 73 are penetrated through the low temperature side heat exchange tubes 74. A hole may be provided, and the high temperature side inflow header 72 and the high temperature side outflow header 73 may be disposed between the low temperature side inflow header 75 and the low temperature side outflow header 76.

図９乃至図１０は本発明の第３の実施形態を示すもので、図９は熱交換器の斜視図、図１０は熱交換器の正面断面図である。尚、前記実施形態と同様の構成部分には同一の符号を付して示す。   9 to 10 show a third embodiment of the present invention. FIG. 9 is a perspective view of the heat exchanger, and FIG. 10 is a front sectional view of the heat exchanger. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

本実施形態の熱交換器８は、図２に示す冷媒回路の放熱器３及び熱交換器６（内部熱交換器）を一体に設けたもので、高温側流入ヘッダ８２と高温側流出ヘッダ８３の間の高温側流出ヘッダ８３側に隣接して低温側流入ヘッダ８５が配置され、高温側流入ヘッダ８２と間隔をおいて低温側流出ヘッダ８６が配置されている。また、低温側流入ヘッダ８５及び低温側流出ヘッダ８６には、前記第１及び第２の実施形態と同様に、それぞれ各高温側熱交換チューブ８１を貫通させる複数の貫通孔８５ｂ，８６ｂが設けられている。各高温側熱交換チューブ８１は、互いに間隔をおいて設けられ、両端がそれぞれ高温側流入ヘッダ８２及び高温側流出ヘッダ８３に接続されている。各低温側熱交換チューブ８４は、各高温側熱交換チューブ８１の両面に積層され、両端がそれぞれ低温側流入ヘッダ８５及び低温側流出ヘッダ８６に接続されている。高温側流入ヘッダ８２と低温側流出ヘッダ８６の間に位置する各高温側熱交換チューブ８１の間には、アルミニウム等の金属板を断面波形状に形成した放熱フィン８７が設けられている。即ち、高温側流入ヘッダ８２と低温側流出ヘッダ８６との間には放熱部８ａが構成され、低温側流入ヘッダ８５と低温側流出ヘッダ８６の間には内部熱交換部８ｂが構成されている。   The heat exchanger 8 of the present embodiment is integrally provided with the radiator 3 and the heat exchanger 6 (internal heat exchanger) of the refrigerant circuit shown in FIG. 2, and includes a high temperature side inflow header 82 and a high temperature side outflow header 83. The low temperature side inflow header 85 is disposed adjacent to the high temperature side outflow header 83 side, and the low temperature side outflow header 86 is disposed at a distance from the high temperature side inflow header 82. In addition, the low temperature side inflow header 85 and the low temperature side outflow header 86 are provided with a plurality of through holes 85b and 86b, respectively, through which the high temperature side heat exchange tubes 81 pass, as in the first and second embodiments. ing. Each high temperature side heat exchange tube 81 is provided at a distance from each other, and both ends thereof are connected to a high temperature side inflow header 82 and a high temperature side outflow header 83, respectively. Each low temperature side heat exchange tube 84 is laminated on both surfaces of each high temperature side heat exchange tube 81, and both ends thereof are connected to a low temperature side inflow header 85 and a low temperature side outflow header 86, respectively. Between each high temperature side heat exchange tube 81 located between the high temperature side inflow header 82 and the low temperature side outflow header 86, the radiation fin 87 which formed metal plates, such as aluminum, in the cross-sectional wave shape is provided. That is, a heat radiating portion 8 a is formed between the high temperature side inflow header 82 and the low temperature side outflow header 86, and an internal heat exchanging portion 8 b is formed between the low temperature side inflow header 85 and the low temperature side outflow header 86. .

以上のように構成された熱交換器において、圧縮機２から吐出された高温高圧の冷媒は、熱交換器８の高温側流入ヘッダ８２に高温冷媒流入口８２ｂを介して流入する。高温側流入ヘッダ８２に流入した冷媒は、分流されて各高温側熱交換チューブ８１を流通し、放熱部８ａにおいて空気と熱交換することにより冷却され、内部熱交換部８ｂにおいて低温側流入ヘッダ８５、低温側流出ヘッダ８６及び各低温側熱交換チューブ８４を流通する冷媒と熱交換することにより冷却されて高温側流出ヘッダ８３に流入する。高温側流出ヘッダ８３の高温冷媒流出口８３ｂから流出した冷媒は、膨張弁４によって減圧された後に蒸発器５を流通し、空気と熱交換することにより加熱される。蒸発器５から流出した冷媒は、熱交換器８の低温側流入ヘッダ８５に低温冷媒流入口８５ｃを介して流入した後、分流されて各低温側熱交換チューブ８４を流通し、各高温側熱交換チューブ８１を流通する冷媒と熱交換することにより加熱されて低温側流出ヘッダ８６に流入する。低温側流出ヘッダ８６の低温冷媒流出口８６ｃから流出した冷媒は、圧縮機２に吸入される。このような冷媒の循環によって、蒸発器５に流入する冷媒と蒸発器５から流出する冷媒のエンタルピ差を増大させることが可能となる。   In the heat exchanger configured as described above, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the high-temperature side inflow header 82 of the heat exchanger 8 via the high-temperature refrigerant inlet 82b. The refrigerant flowing into the high temperature side inflow header 82 is divided and flows through each high temperature side heat exchange tube 81 and is cooled by exchanging heat with air in the heat radiating section 8a, and the low temperature side inflow header 85 in the internal heat exchange section 8b. Then, it is cooled by exchanging heat with the refrigerant flowing through the low temperature side outflow header 86 and the respective low temperature side heat exchange tubes 84 and flows into the high temperature side outflow header 83. The refrigerant flowing out from the high temperature refrigerant outlet 83b of the high temperature side outflow header 83 is heated by exchanging heat with the air after flowing through the evaporator 5 after being decompressed by the expansion valve 4. The refrigerant that has flowed out of the evaporator 5 flows into the low temperature side inflow header 85 of the heat exchanger 8 through the low temperature refrigerant inlet 85c, and then is divided to flow through the low temperature side heat exchange tubes 84, and each high temperature side heat. Heat is exchanged with the refrigerant circulating in the exchange tube 81 and flows into the low temperature side outflow header 86. The refrigerant flowing out from the low-temperature refrigerant outlet 86 c of the low-temperature side outflow header 86 is sucked into the compressor 2. Such refrigerant circulation makes it possible to increase the enthalpy difference between the refrigerant flowing into the evaporator 5 and the refrigerant flowing out of the evaporator 5.

このように、本実施形態の熱交換器によれば、高温側流入ヘッダ８２と低温側流出ヘッダ８６の間に放熱部８ａを構成したので、放熱器及び熱交換器を一体に構成することができ、蒸気圧縮サイクル装置の小型化を図ることができる。   Thus, according to the heat exchanger of this embodiment, since the heat radiating portion 8a is configured between the high temperature side inflow header 82 and the low temperature side outflow header 86, the heat radiator and the heat exchanger can be configured integrally. This can reduce the size of the vapor compression cycle device.

尚、前記第３の実施形態では、各高温側熱交換チューブ８１の両面側に低温側熱交換チューブ８４を積層したものを示したが、図１１に示すように、各高温側熱交換チューブ８１の片面側のみに低温側熱交換チューブ８４を積層するようにしてもよい。   In the third embodiment, the high temperature side heat exchange tubes 81 are laminated on the both sides of the low temperature side heat exchange tubes 84. However, as shown in FIG. Alternatively, the low temperature side heat exchange tube 84 may be laminated only on one side.

また、前記第３の実施形態では、各高温側熱交換チューブ８１にそれぞれ低温側熱交換チューブ８４を積層し、各高温側熱交換チューブ８１を流通する高温の冷媒と各低温側熱交換チューブ８４を流通する低温の冷媒を熱交換させるようにしたものを示したが、図１２に示すように、一部の高温側熱交換チューブ８１に低温側熱交換チューブ８４を積層し、一部の高温側熱交換チューブ８１を流通する高温の冷媒と各低温側熱交換チューブ８４を流通する低温の冷媒を熱交換させるようにしてもよい。   In the third embodiment, the low temperature side heat exchange tubes 84 are stacked on the high temperature side heat exchange tubes 81, respectively, and the high temperature refrigerant flowing through the high temperature side heat exchange tubes 81 and the low temperature side heat exchange tubes 84 are stacked. However, as shown in FIG. 12, a low-temperature side heat exchange tube 84 is laminated on a part of the high-temperature side heat exchange tubes 81 and a part of the high-temperature refrigerant is circulated. You may make it heat-exchange the high temperature refrigerant | coolant which distribute | circulates the side heat exchange tube 81, and the low temperature refrigerant | coolant which distribute | circulates each low temperature side heat exchange tube 84. FIG.

また、前記第３の実施形態では、低温側流入ヘッダ８５及び低温側流出ヘッダ８６に各高温側熱交換チューブ８１を貫通させる貫通孔８５ｂ，８６ｂを設け、高温側流入ヘッダ８２と高温側流出ヘッダ８３の間に低温側流入ヘッダ８５及び低温側流出ヘッダ８６を配置したものを示したが、図１３に示すように、低温側流入ヘッダ８６を高温側流出ヘッダ８２の外側に配置するようにしてもよい。   In the third embodiment, the low temperature side inflow header 85 and the low temperature side outflow header 86 are provided with through-holes 85b and 86b that allow the high temperature side heat exchange tubes 81 to pass therethrough, and the high temperature side inflow header 82 and the high temperature side outflow header. In FIG. 13, the low temperature side inflow header 85 and the low temperature side outflow header 86 are disposed. However, as shown in FIG. 13, the low temperature side inflow header 86 is disposed outside the high temperature side outflow header 82. Also good.

本発明の第１の実施形態を示す熱交換器の全体斜視図The whole heat exchanger perspective view showing the 1st embodiment of the present invention. 熱交換器が接続された冷媒回路図Refrigerant circuit diagram with heat exchanger connected 熱交換器の平面断面図Plan sectional view of heat exchanger 熱交換器の正面断面図Front cross section of heat exchanger 高温側熱交換チューブ及び低温側熱交換チューブを示す要部斜視図The principal part perspective view which shows a high temperature side heat exchange tube and a low temperature side heat exchange tube 接続孔及び貫通孔を示す低温側流出ヘッダの要部正面断面図Front cross-sectional view of the main part of the low temperature side outflow header showing the connection hole and the through hole 本発明の第２の実施形態を示す熱交換器の全体正面断面図Whole front sectional drawing of the heat exchanger which shows the 2nd Embodiment of this invention 高温側熱交換チューブ及び低温側熱交換チューブの要部斜視図High temperature side heat exchange tube and low temperature side heat exchange tube main part perspective view 本発明の第３の実施形態を示す熱交換器の全体斜視図Whole perspective view of the heat exchanger which shows the 3rd Embodiment of this invention 熱交換器の正面断面図Front cross section of heat exchanger その他の例を示す熱交換器の正面断面図Front sectional view of heat exchanger showing other examples その他の例を示す熱交換器の正面断面図Front sectional view of heat exchanger showing other examples その他の例を示す熱交換器の正面断面図Front sectional view of heat exchanger showing other examples

符号の説明Explanation of symbols

６…熱交換器、６１…高温側熱交換チューブ、６２…高温側流入ヘッダ、６３…高温側流出ヘッダ、６３ｂ…貫通孔、６４…低温側熱交換チューブ、６５…低温側流入ヘッダ、６６…低温側流出ヘッダ、６６ｂ…貫通孔、７…熱交換器、７１…高温側熱交換チューブ、７２…高温側流入ヘッダ、７３…高温側流出ヘッダ、７４…低温側熱交換チューブ、７５…低温側流入ヘッダ、７５ｂ…貫通孔、７６…低温側流出ヘッダ、７６ｂ…貫通孔、８…熱交換器、８ａ…放熱部、８ｂ…内部熱交換部、８１…高温側熱交換チューブ、８２…高温側流入ヘッダ、８３…高温側流出ヘッダ、８４…低温側熱交換チューブ、８５…低温側流入ヘッダ、８５ｂ…貫通孔、８６…低温側流出ヘッダ、８６ｂ…貫通孔、８７…放熱フィン。
DESCRIPTION OF SYMBOLS 6 ... Heat exchanger, 61 ... High temperature side heat exchange tube, 62 ... High temperature side inflow header, 63 ... High temperature side outflow header, 63b ... Through-hole, 64 ... Low temperature side heat exchange tube, 65 ... Low temperature side inflow header, 66 ... Low temperature side outflow header, 66b ... through hole, 7 ... heat exchanger, 71 ... high temperature side heat exchange tube, 72 ... high temperature side inflow header, 73 ... high temperature side outflow header, 74 ... low temperature side heat exchange tube, 75 ... low temperature side Inflow header, 75b ... through hole, 76 ... low temperature side outflow header, 76b ... through hole, 8 ... heat exchanger, 8a ... heat radiation part, 8b ... internal heat exchange part, 81 ... high temperature side heat exchange tube, 82 ... high temperature side Inflow header, 83 ... High temperature side outflow header, 84 ... Low temperature side heat exchange tube, 85 ... Low temperature side inflow header, 85b ... Through hole, 86 ... Low temperature side outflow header, 86b ... Through hole, 87 ... Radiation fin.

Claims (7)

高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、
前記各高温側ヘッダの一方に、各低温側ヘッダの一方に接続される低温側熱交換チューブが貫通する貫通孔を形成し、
各低温側ヘッダの他方に、各高温側ヘッダの他方に接続される高温側熱交換チューブが貫通する貫通孔を形成した
ことを特徴とする熱交換器。 At least one high temperature side heat exchange tube through which the high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, at least one low temperature side heat exchange tube through which the low temperature fluid flows, and a low temperature A pair of low-temperature headers connected to both ends of the side heat exchange tube, and the high-temperature side heat that allows heat exchange between the high-temperature fluid flowing through the high-temperature side heat exchange tube and the low-temperature fluid flowing through the low-temperature side heat exchange tube A heat exchanger in which an exchange tube and a low-temperature side heat exchange tube are laminated,
In one of the high temperature side headers, a through hole is formed through which a low temperature side heat exchange tube connected to one of the low temperature side headers passes.
A heat exchanger, wherein a through hole through which a high temperature side heat exchange tube connected to the other of each high temperature side header passes is formed in the other of each low temperature side header. 前記高温側熱交換チューブ及び低温側熱交換チューブを、高温流体及び低温流体の流通方向の長さを同一に形成するとともに、流体の流通方向に互いに所定距離だけずらして積層した
ことを特徴とする請求項１記載の熱交換器。 The high temperature side heat exchange tube and the low temperature side heat exchange tube have the same length in the flow direction of the high temperature fluid and the low temperature fluid, and are stacked while being shifted from each other by a predetermined distance in the flow direction of the fluid. The heat exchanger according to claim 1. 前記各高温側ヘッダの他方と各低温側ヘッダの他方との間に、高温側熱交換チューブを流通する高温流体と外部の空気とを熱交換させることにより高温流体を放熱させることが可能な放熱部を設けた
ことを特徴とする請求項１記載の熱交換器。 Heat dissipation capable of dissipating the high-temperature fluid by exchanging heat between the high-temperature fluid flowing through the high-temperature side heat exchange tube and the external air between the other of the high-temperature side headers and the other of the low-temperature side headers. The heat exchanger according to claim 1, wherein the heat exchanger is provided. 高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、
前記各高温側ヘッダまたは各低温側ヘッダに、各低温側ヘッダに接続される低温側熱交換チューブまたは各高温側ヘッダに接続される高温側熱交換チューブが貫通する貫通孔を形成した
ことを特徴とする熱交換器。 At least one high temperature side heat exchange tube through which the high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, at least one low temperature side heat exchange tube through which the low temperature fluid flows, and a low temperature A pair of low-temperature headers connected to both ends of the side heat exchange tube, and the high-temperature side heat that allows heat exchange between the high-temperature fluid flowing through the high-temperature side heat exchange tube and the low-temperature fluid flowing through the low-temperature side heat exchange tube A heat exchanger in which an exchange tube and a low-temperature side heat exchange tube are laminated,
Each high temperature side header or each low temperature side header has a through hole through which a low temperature side heat exchange tube connected to each low temperature side header or a high temperature side heat exchange tube connected to each high temperature side header penetrates. Heat exchanger. 高温流体が流通する少なくとも一つの高温側熱交換チューブと、高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する少なくとも一つの低温側熱交換チューブと、低温側熱交換チューブの両端側に接続された一対の低温側ヘッダとを備え、高温側熱交換チューブを流通する高温流体と低温側熱交換チューブを流通する低温流体とを熱交換可能に高温側熱交換チューブと低温側熱交換チューブを積層した熱交換器であって、
前記各低温側ヘッダに、各高温側ヘッダに接続される高温側熱交換チューブが貫通する貫通孔を形成し、
各高温側ヘッダの一方と各低温側ヘッダの一方との間に、高温側熱交換チューブを流通する高温流体と外部の空気とを熱交換させることにより高温流体を放熱させることが可能な放熱部を設けた
ことを特徴とする熱交換器。 At least one high temperature side heat exchange tube through which the high temperature fluid flows, a pair of high temperature side headers connected to both ends of the high temperature side heat exchange tube, at least one low temperature side heat exchange tube through which the low temperature fluid flows, and a low temperature A pair of low temperature side headers connected to both ends of the side heat exchange tube, and the high temperature side heat is exchangeable between the high temperature fluid flowing through the high temperature side heat exchange tube and the low temperature fluid flowing through the low temperature side heat exchange tube A heat exchanger in which an exchange tube and a low-temperature side heat exchange tube are laminated,
In each of the low temperature side headers, a through hole through which a high temperature side heat exchange tube connected to each high temperature side header passes is formed.
A heat dissipating part capable of dissipating the high temperature fluid by exchanging heat between the high temperature fluid flowing through the high temperature side heat exchange tube and the external air between one of the high temperature side headers and one of the low temperature side headers. The heat exchanger characterized by providing. 高温流体が流通する複数の高温側熱交換チューブと、各高温側熱交換チューブの両端側に接続された一対の高温側ヘッダと、低温流体が流通する複数の低温側熱交換チューブと、各低温側熱交換チューブの両端側に接続された一対の低温側熱交換ヘッダとを備え、一部の高温側熱交換チューブを流通する高温流体と各低温側熱交換チューブを流通する低温流体とを熱交換可能に一部の高温側熱交換チューブと各低温側熱交換チューブを積層した熱交換器であって、
前記各低温側ヘッダに、低温流体と熱交換する高温流体が流通する高温側熱交換チューブが貫通する貫通孔を形成し、
各高温側ヘッダの一方と各低温側ヘッダの一方との間と、前記一部の高温側熱交換チューブ以外の高温側熱交換チューブが接続された各高温側ヘッダの間に、高温側熱交換チューブを流通する高温流体と外部の空気とを熱交換させることにより高温流体を放熱させることが可能な放熱部を設けた
ことを特徴とする熱交換器。 A plurality of high temperature side heat exchange tubes through which the high temperature fluid flows, a pair of high temperature side headers connected to both ends of each high temperature side heat exchange tube, a plurality of low temperature side heat exchange tubes through which the low temperature fluid flows, and each low temperature A pair of low-temperature side heat exchange headers connected to both ends of the side heat exchange tube, and heats the high-temperature fluid flowing through some of the high-temperature side heat exchange tubes and the low-temperature fluid flowing through each low-temperature side heat exchange tube. A heat exchanger in which a part of the high temperature side heat exchange tubes and each low temperature side heat exchange tube are laminated so as to be exchangeable,
In each of the low temperature side headers, a through hole through which a high temperature side heat exchange tube through which a high temperature fluid that exchanges heat with a low temperature fluid flows is formed,
High-temperature side heat exchange between one of the high-temperature side headers and one of the low-temperature-side headers and between the high-temperature side headers connected to the high-temperature side heat exchange tubes other than the part of the high-temperature side heat exchange tubes A heat exchanger comprising a heat dissipating part capable of dissipating heat from a high-temperature fluid by exchanging heat between the high-temperature fluid flowing through the tube and external air. 前記高温流体及び低温流体として二酸化炭素を用いた
ことを特徴とする請求項１、２、３、４、５または６記載の熱交換器。
The heat exchanger according to claim 1, 2, 3, 4, 5 or 6, wherein carbon dioxide is used as the high temperature fluid and the low temperature fluid.
JP2005154461A 2005-05-26 2005-05-26 Heat exchanger Pending JP2006329537A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036696A (en) * 2011-08-09 2013-02-21 Daikin Industries Ltd Heat exchanger and freezer unit including the same
WO2013114474A1 (en) * 2012-01-30 2013-08-08 三菱電機株式会社 Stacked heat exchanger, heat pump system equipped therewith, and method for manufacturing stacked heat exchanger
JPWO2013132544A1 (en) * 2012-03-07 2015-07-30 三菱電機株式会社 Heat exchanger and heat pump system equipped with the heat exchanger
CN108627042A (en) * 2018-02-06 2018-10-09 南京航空航天大学 Three media heat exchanger of integrated molding based on Multi-hole parallel flow flat tube
WO2022166236A1 (en) * 2020-08-26 2022-08-11 广东美的暖通设备有限公司 Heat exchanger, electric control box and air conditioning system
EP4134610A4 (en) * 2020-08-26 2023-10-18 GD Midea Heating & Ventilating Equipment Co., Ltd. Heat exchanger, electric control box and air conditioning system
RU2821677C2 (en) * 2021-02-08 2024-06-26 ГД МИДЕА ХИТИНГ энд ВЕНТИЛЕЙТИНГ ЭКВИПМЕНТ КО., ЛТД. Heat exchanger and method of its manufacturing, electric control unit and air conditioning system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036696A (en) * 2011-08-09 2013-02-21 Daikin Industries Ltd Heat exchanger and freezer unit including the same
WO2013114474A1 (en) * 2012-01-30 2013-08-08 三菱電機株式会社 Stacked heat exchanger, heat pump system equipped therewith, and method for manufacturing stacked heat exchanger
JP5661205B2 (en) * 2012-01-30 2015-01-28 三菱電機株式会社 Laminated heat exchanger, heat pump system equipped with the same, and manufacturing method of laminated heat exchanger
JPWO2013132544A1 (en) * 2012-03-07 2015-07-30 三菱電機株式会社 Heat exchanger and heat pump system equipped with the heat exchanger
CN108627042A (en) * 2018-02-06 2018-10-09 南京航空航天大学 Three media heat exchanger of integrated molding based on Multi-hole parallel flow flat tube
WO2022166236A1 (en) * 2020-08-26 2022-08-11 广东美的暖通设备有限公司 Heat exchanger, electric control box and air conditioning system
EP4134610A4 (en) * 2020-08-26 2023-10-18 GD Midea Heating & Ventilating Equipment Co., Ltd. Heat exchanger, electric control box and air conditioning system
RU2821677C2 (en) * 2021-02-08 2024-06-26 ГД МИДЕА ХИТИНГ энд ВЕНТИЛЕЙТИНГ ЭКВИПМЕНТ КО., ЛТД. Heat exchanger and method of its manufacturing, electric control unit and air conditioning system

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