JP2015010776A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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JP2015010776A
JP2015010776A JP2013136632A JP2013136632A JP2015010776A JP 2015010776 A JP2015010776 A JP 2015010776A JP 2013136632 A JP2013136632 A JP 2013136632A JP 2013136632 A JP2013136632 A JP 2013136632A JP 2015010776 A JP2015010776 A JP 2015010776A
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storage material
heat
heat storage
latent heat
heat exchange
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JP6214242B2 (en
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直久 東山
Naohisa Higashiyama
直久 東山
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Mahle Behr Thermal Systems Japan Ltd
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Keihin Thermal Technology Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchange capable of decreasing the number of components.SOLUTION: A heat exchanger 1 includes a plurality of heat exchange tubes 12 arranged distanced from one another in parallel with longitudinal directions of the heat exchange tubes 12 set to the same direction. Latent heat storage mediums 16 in which paraffin is fixed to thermoplastic elastomer are arranged in gaps 14A out of all gaps 14A and 14B formed between the adjacent heat exchange tubes 12. Corrugated fins 15 are arranged in the gaps 14A in which the latent heat storage mediums 16 are arranged so as to contact the heat exchange tubes 12 on both sides, and spaces formed between the corrugated fins 15 and the heat exchange tubes 12 on both sides are filled with the latent heat storage mediums 16.

Description

この発明は熱交換器に関する。   The present invention relates to a heat exchanger.

この明細書および特許請求の範囲において、図１の上下を上下というものとする。   In this specification and claims, the top and bottom of FIG.

近年、環境保護や自動車の燃費向上などを目的として、信号待ちなどの停車時にエンジンを自動的に停止させる自動車が提案されている。   In recent years, automobiles have been proposed that automatically stop the engine when the vehicle stops, such as when waiting for a signal, for the purpose of environmental protection or improvement in automobile fuel efficiency.

しかしながら、通常のカーエアコンにおいては、エンジンを停止させると、エンジンを駆動源とする圧縮機が停止するので、エバポレータに冷媒が供給されなくなり、冷房能力が急激に低下するという問題がある。   However, in a normal car air conditioner, when the engine is stopped, the compressor using the engine as a driving source stops, so that there is a problem that the refrigerant is not supplied to the evaporator and the cooling capacity is rapidly reduced.

そこで、このような問題を解決するために、エバポレータに蓄冷機能を付与し、エンジンが停止して圧縮機が停止した際に、エバポレータに蓄えられた冷熱を放冷して車室内を冷却することが考えられている。   Therefore, in order to solve such problems, the evaporator is provided with a cold storage function, and when the engine stops and the compressor stops, the cold stored in the evaporator is discharged to cool the vehicle interior. Is considered.

この種の蓄冷機能付きエバポレータとして、上下方向にのびるとともに幅方向が通風方向を向いた複数の扁平状冷媒流通管（熱交換管）が、互いに間隔をおいて並列状に配置されており、隣り合う冷媒流通管どうしの間に通風間隙が形成され、全通風間隙のうち一部の通風間隙に蓄冷材が封入された蓄冷材容器が配置されるとともに、残りの通風間隙にアウターフィンが配置され、蓄冷材容器が、２枚の金属板の周縁部どうしを接合することにより形成され、蓄冷材容器内にインナーフィンが配置されている蓄冷機能付きエバポレータが提案されている（特許文献１参照）。   In this type of evaporator with a cold storage function, a plurality of flat refrigerant flow pipes (heat exchange pipes) extending in the vertical direction and having the width direction facing the ventilation direction are arranged in parallel with a space between each other. Ventilation gaps are formed between the matching refrigerant flow pipes, and a cool storage material container in which the cool storage material is sealed in a part of the ventilation gaps is arranged, and outer fins are arranged in the remaining ventilation gaps. An evaporator with a cool storage function is proposed in which a cool storage material container is formed by joining the peripheral portions of two metal plates, and an inner fin is disposed in the cool storage material container (see Patent Document 1). .

特許文献１記載の蓄冷機能付きエバポレータによれば、圧縮機が作動している通常の冷房時には、冷媒流通管内を流れる冷媒の有する冷熱が、蓄冷材容器の両側壁を形成する金属板に伝えられた後、直接またはインナーフィンを介して蓄冷材容器内の蓄冷材に伝わって蓄冷材に冷熱が蓄えられるようになっている。一方、圧縮機が停止した際には、蓄冷材容器内の蓄冷材に蓄えられた冷熱が、直接またはインナーフィンを介して蓄冷材容器の両側壁を形成する金属板に伝えられた後冷媒流通管に伝えられ、冷媒流通管を通って蓄冷材容器が配置された通風間隙の両隣の通風間隙に配置されたアウターフィンに伝えられ、アウターフィンから当該通風間隙を流れる空気に放冷されるようになっている。   According to the evaporator with a cool storage function described in Patent Document 1, during normal cooling when the compressor is operating, the cold heat of the coolant flowing in the coolant circulation pipe is transmitted to the metal plates that form both side walls of the cool storage material container. After that, it is transmitted to the regenerator material in the regenerator material container directly or via the inner fin, so that the cold energy is stored in the regenerator material. On the other hand, when the compressor is stopped, the cold energy stored in the regenerator material in the regenerator material container is transferred to the metal plates that form both side walls of the regenerator material container directly or via the inner fins, and then the refrigerant circulation It is transmitted to the pipe, is transmitted to the outer fin arranged in the ventilation gap adjacent to the ventilation gap where the cool storage material container is arranged through the refrigerant circulation pipe, and is allowed to cool from the outer fin to the air flowing through the ventilation gap. It has become.

しかしながら、特許文献１記載の蓄冷機能付きエバポレータによれば、蓄冷材容器を形成する金属板を必要とし、部品点数が多くなるという問題がある。   However, according to the evaporator with a cool storage function described in Patent Document 1, there is a problem that a metal plate that forms a cool storage material container is required and the number of parts increases.

特開２０１３−６１１３７号公報JP 2013-61137 A

この発明の目的は、上記問題を解決し、部品点数を低減しうる熱交換器を提供することにある。   An object of the present invention is to provide a heat exchanger that can solve the above problems and reduce the number of parts.

本発明は、上記目的を達成するために以下の態様からなる。   In order to achieve the above object, the present invention comprises the following aspects.

1)長手方向を同方向に向けるとともに互いに間隔をおいて並列状に配置された複数の熱交換管を備えており、隣り合う熱交換管どうしの間に形成されたすべての間隙のうち一部の間隙に、熱可塑性エラストマーにパラフィンが固定された潜熱蓄熱材が配置されている熱交換器。   1) It is provided with a plurality of heat exchange tubes whose longitudinal directions are directed in the same direction and are arranged in parallel at intervals, and some of all the gaps formed between adjacent heat exchange tubes A heat exchanger in which a latent heat storage material in which paraffin is fixed to a thermoplastic elastomer is disposed in the gap.

2)隣り合う熱交換管どうしの間に形成されたすべての間隙のうち潜熱蓄熱材が配置されている間隙に、両側の熱交換管と接触するようにフィンが配置されており、フィンと両側の熱交換管との間に形成される空間が潜熱蓄熱材で埋められている上記1)記載の熱交換器。   2) Fins are arranged in contact with the heat exchange pipes on both sides in the gaps where the latent heat storage material is arranged among all the gaps formed between adjacent heat exchange pipes. The heat exchanger according to 1) above, wherein a space formed between the heat exchange pipe is filled with a latent heat storage material.

3)潜熱蓄熱材が、フィンにより保持されている上記2)記載の熱交換器。   3) The heat exchanger according to 2) above, wherein the latent heat storage material is held by fins.

4)潜熱蓄熱材が配置されたすべての間隙の通風方向両端部のうち少なくとも風下側端部が開放されている上記1)〜3)のうちのいずれかに記載の熱交換器。   4) The heat exchanger according to any one of the above 1) to 3), wherein at least the leeward side end portions of the both ends in the ventilation direction of all the gaps where the latent heat storage material is disposed are opened.

5)潜熱蓄熱材の風上側端部が、防塵板により覆われている上記4)記載の熱交換器。   5) The heat exchanger according to 4) above, wherein the windward end of the latent heat storage material is covered with a dustproof plate.

6)潜熱蓄熱材が、網状構造の熱可塑性エラストマー中に、パラフィンが取り込まれて固定されることにより形成されている上記1)〜5)のうちのいずれかに記載の熱交換器。   6) The heat exchanger according to any one of 1) to 5) above, wherein the latent heat storage material is formed by taking and fixing paraffin in a network-structured thermoplastic elastomer.

7)潜熱蓄熱材が、熱可塑性エラストマー中に、パラフィンを内包するマイクロカプセルが分散固定されることにより形成されている上記1)〜5)のうちのいずれかに記載の熱交換器。   7) The heat exchanger according to any one of 1) to 5) above, wherein the latent heat storage material is formed by dispersing and fixing microcapsules containing paraffin in a thermoplastic elastomer.

8)熱交換管が冷熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する冷熱により冷却されるようになされ、熱交換管内を流れる媒体が、隣り合うすべての間隙のうち潜熱蓄熱材が配置されていない間隙を流れる空気から熱を奪って気化し、蓄冷機能付きエバポレータとして用いられる上記1)〜7)のうちのいずれかに記載の熱交換器。   8) The heat exchange pipe flows the medium that transports the cold heat, and the latent heat storage material is cooled by the cold heat of the medium flowing in the heat exchange pipe, so that the medium flowing in the heat exchange pipe The heat exchanger according to any one of 1) to 7) above, wherein the heat is taken from the air flowing through the gap where the latent heat storage material is not disposed and vaporized, and used as an evaporator with a cold storage function.

9)潜熱蓄熱材が配置された間隙の両隣に、潜熱蓄熱材が配置されていない間隙がある上記8)記載の熱交換器。   9) The heat exchanger according to 8) above, wherein there are gaps where no latent heat storage material is arranged on both sides of the gap where the latent heat storage material is arranged.

10)熱交換管が温熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する温熱により加熱されるようになされている上記1)〜7)のうちのいずれかに記載の熱交換器。   10) The heat exchange pipe flows a medium for transporting warm heat, and the latent heat storage material is heated by the warm heat of the medium flowing in the heat exchange pipe. Heat exchanger.

上記1)〜10)の熱交換器は、長手方向を同方向に向けるとともに互いに間隔をおいて並列状に配置された複数の熱交換管を備えており、隣り合う熱交換管どうしの間に形成されたすべての間隙のうち一部の間隙に、熱可塑性エラストマーにパラフィンが固定された潜熱蓄熱材が配置されており、熱可塑性エラストマーは、パラフィンの融点以上の温度においてもゴム状弾性を有するので、上記1)〜10)の熱交換器によればパラフィンが溶け出すことはなく、形状保持性に優れている。したがって、潜熱蓄熱材を収容する容器やインナーフィンを必要とせず、特許文献１記載の蓄冷機能付きエバポレータに比べて部品点数を低減することが可能になる。   The heat exchangers of the above 1) to 10) are provided with a plurality of heat exchange tubes arranged in parallel and spaced apart from each other with their longitudinal directions oriented in the same direction, and between adjacent heat exchange tubes. A latent heat storage material in which paraffin is fixed to a thermoplastic elastomer is disposed in a part of all the formed gaps, and the thermoplastic elastomer has rubber-like elasticity even at a temperature equal to or higher than the melting point of paraffin. Therefore, according to the heat exchangers of the above 1) to 10), paraffin does not melt and is excellent in shape retention. Therefore, a container for storing the latent heat storage material and an inner fin are not required, and the number of parts can be reduced as compared with the evaporator with a cold storage function described in Patent Document 1.

そして、上記8)の熱交換器のように、熱交換管が冷熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する冷熱により冷却されるようになされ、熱交換管内を流れる媒体が、隣り合うすべての間隙のうち潜熱蓄熱材が配置されていない間隙を流れる空気から熱を奪って気化し、蓄冷機能付きエバポレータとして用いられる場合、圧縮機が作動している通常の冷房時には、熱交換管内を流れる冷媒の有する冷熱が、潜熱蓄熱材に伝わって潜熱蓄熱材に冷熱が蓄えられる。一方、圧縮機が停止した際には、潜熱蓄熱材に蓄えられた冷熱が熱交換管に伝えられ、熱交換管を通って潜熱蓄蓄熱材が配置された間隙の両隣の間隙を流れる空気に放冷される。   And, like the heat exchanger of 8) above, the heat exchange pipe flows the medium for transporting cold heat, and the latent heat storage material is cooled by the cold heat of the medium flowing in the heat exchange pipe, When the medium flowing through the air is vaporized by taking heat from the air flowing through the gaps where no latent heat storage material is arranged among all adjacent gaps, and used as an evaporator with a cold storage function, the compressor is operating normally During cooling, the cold heat of the refrigerant flowing in the heat exchange pipe is transmitted to the latent heat storage material, and the cold heat is stored in the latent heat storage material. On the other hand, when the compressor is stopped, the cold heat stored in the latent heat storage material is transmitted to the heat exchange pipe, and the air flowing through the gap adjacent to the gap where the latent heat storage heat storage material is arranged passes through the heat exchange pipe. It is allowed to cool.

上記2)の熱交換器によれば、隣り合う熱交換管どうしの間に形成されたすべての間隙のうち潜熱蓄熱材が配置されている間隙に、両側の熱交換管と接触するようにフィンが配置されており、フィンと両側の熱交換管との間に形成される空間が潜熱蓄熱材で埋められているので、熱交換管と潜熱蓄熱材との間の冷熱の伝熱が効率よく行われる。すなわち、熱交換管内を流れる流体の有する冷熱または温熱が、フィンを経て潜熱蓄熱材の全体に伝わり、これとは逆に、潜熱蓄熱材全体に蓄えられた冷熱または温熱が、フィンを経て熱交換管に伝わる。その結果、熱交換管と潜熱蓄熱材との間の冷熱の伝熱が効率よく行われる。   According to the heat exchanger of 2) above, the fins are in contact with the heat exchange tubes on both sides in the gaps where the latent heat storage material is arranged among all the gaps formed between adjacent heat exchange tubes. Since the space formed between the fins and the heat exchange tubes on both sides is filled with the latent heat storage material, the heat transfer between the heat exchange tube and the latent heat storage material is efficient. Done. In other words, the cold or warm heat of the fluid flowing in the heat exchange pipe is transmitted to the entire latent heat storage material through the fins. Conversely, the cold or warm heat stored in the entire latent heat storage material is exchanged through the fins. It is transmitted to the tube. As a result, cold heat transfer between the heat exchange tube and the latent heat storage material is efficiently performed.

上記3)の熱交換器によれば、隣り合う熱交換管どうしの間からの潜熱蓄熱材の脱落を確実に防止することができる。   According to the heat exchanger of 3) above, it is possible to reliably prevent the latent heat storage material from falling off between adjacent heat exchange tubes.

上記5)の熱交換器によれば、潜熱蓄熱材への塵埃の付着を防止することが可能になり、熱可塑性エラストマーの劣化を抑制することができる。   According to the heat exchanger of 5) above, it is possible to prevent dust from adhering to the latent heat storage material and to suppress deterioration of the thermoplastic elastomer.

上記6)および7)の熱交換器に用いられている潜熱蓄熱材において、熱可塑性エラストマーは、パラフィンの融点以上の温度においてもゴム状弾性を有するので、パラフィンが溶け出すことはなく、形状保持性に優れている。   In the latent heat storage material used in the heat exchangers of 6) and 7) above, the thermoplastic elastomer has rubber-like elasticity even at a temperature equal to or higher than the melting point of paraffin, so that the paraffin does not melt and retains its shape. Excellent in properties.

上記8)の熱交換器によれば、熱交換管が冷熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する冷熱により冷却されるようになされ、熱交換管内を流れる媒体が、隣り合うすべての間隙のうち潜熱蓄熱材が配置されていない間隙を流れる空気から熱を奪って気化し、蓄冷機能付きエバポレータとして用いられる場合、圧縮機が作動している通常の冷房時には、熱交換管内を流れる冷媒の有する冷熱が、潜熱蓄熱材に伝わって潜熱蓄熱材に冷熱が蓄えられる。一方、圧縮機が停止した際には、潜熱蓄熱材に蓄えられた冷熱が熱交換管に伝えられ、熱交換管を通って潜熱蓄熱材が配置された間隙の両隣の間隙を流れる空気に放冷される。そして、熱可塑性エラストマーは、パラフィンの融点以上の温度においてもゴム状弾性を有するので、パラフィンが溶け出すことはなく、形状保持性に優れている。したがって、潜熱蓄熱材を収容する容器を必要とせず、特許文献１記載の蓄冷機能付きエバポレータに比べて部品点数を低減することが可能になる。   According to the heat exchanger of the above 8), the heat exchange pipe flows the medium for transporting cold heat, and the latent heat storage material is cooled by the cold heat of the medium flowing in the heat exchange pipe, and flows in the heat exchange pipe. When the medium is vaporized by taking heat from the air flowing through the gaps where no latent heat storage material is arranged among all adjacent gaps and used as an evaporator with a cold storage function, during normal cooling when the compressor is operating The cold heat of the refrigerant flowing in the heat exchange pipe is transmitted to the latent heat storage material, and the cold heat is stored in the latent heat storage material. On the other hand, when the compressor is stopped, the cold heat stored in the latent heat storage material is transmitted to the heat exchange pipe, and is released to the air flowing through the gap adjacent to the gap where the latent heat storage material is disposed through the heat exchange pipe. It is cooled. And since the thermoplastic elastomer has rubber-like elasticity even at a temperature equal to or higher than the melting point of paraffin, the paraffin does not melt and is excellent in shape retention. Therefore, a container for storing the latent heat storage material is not required, and the number of parts can be reduced as compared with the evaporator with a cold storage function described in Patent Document 1.

この発明による熱交換器を適用した蓄冷機能付きエバポレータの全体構成を示す斜視図である。It is a perspective view which shows the whole structure of the evaporator with a cool storage function to which the heat exchanger by this invention is applied. 図１の蓄冷機能付きエバポレータの部分拡大水平断面図である。It is a partial expanded horizontal sectional view of the evaporator with a cool storage function of FIG. 図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG.

以下、この発明の実施形態を、図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

以下の説明において、通風方向下流側（図１および図２に矢印Ｘで示す方向）を前、これと反対側を後というものとし、通風方向下流側から見た際の上下、左右（図１の上下、左右）を上下、左右というものとする。   In the following description, the downstream side in the ventilation direction (the direction indicated by the arrow X in FIGS. 1 and 2) is referred to as the front side, and the opposite side is referred to as the rear side. Are up and down and left and right.

さらに、以下の説明において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。   Furthermore, in the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

図１はこの発明による熱交換器を適用した蓄冷機能付きエバポレータの全体構成を示し、図２および図３はその要部の構成を示す。   FIG. 1 shows the overall configuration of an evaporator with a cold storage function to which a heat exchanger according to the present invention is applied, and FIGS. 2 and 3 show the configuration of the main part thereof.

図１において、蓄冷機能付きエバポレータ(1)（熱交換器）は、上下方向に間隔をおいて配置された左右方向にのびるアルミニウム製上ヘッダタンク(2)およびアルミニウム製下ヘッダタンク(3)と、両ヘッダタンク(2)(3)間に設けられた熱交換コア部(4)とを備えている。   In FIG. 1, an evaporator (1) (heat exchanger) with a cold storage function includes an aluminum upper header tank (2) and an aluminum lower header tank (3), which are arranged in the vertical direction and are spaced apart from each other. And a heat exchange core portion (4) provided between the header tanks (2) and (3).

上ヘッダタンク(2)は、前側（通風方向下流側）に位置する風下側上ヘッダ部(5)と、後側（通風方向上流側）に位置しかつ風下側上ヘッダ部(5)に一体化された風上側上ヘッダ部(6)とを備えている。風下側上ヘッダ部(5)の左端部に冷媒入口(7)が設けられ、風上側上ヘッダ部(6)の右端部に冷媒出口(8)が設けられている。下ヘッダタンク(3)は、前側に位置する風下側下ヘッダ部(9)と、後側に位置しかつ風下側下ヘッダ部(9)に一体化された風上側下ヘッダ部(11)とを備えている。   The upper header tank (2) is integrated with the leeward upper header part (5) located on the front side (downstream side of the ventilation direction) and the rear side (upstream side of the ventilation direction) and integrated with the leeward side upper header part (5) And a windward upper header section (6). A refrigerant inlet (7) is provided at the left end of the leeward upper header portion (5), and a refrigerant outlet (8) is provided at the right end of the leeward upper header portion (6). The lower header tank (3) includes a leeward lower header portion (9) located on the front side, and an upwind lower header portion (11) located on the rear side and integrated with the leeward lower header portion (9). It has.

図１および図２に示すように、熱交換コア部(4)には、長手方向が上下方向を向くとともに幅方向が通風方向（前後方向）を向いた複数のアルミニウム押出形材製扁平状冷媒流通管(12)が、左右方向（冷媒流通管(12)の厚み方向）に間隔をおいて並列状に配置されている。ここでは、前後方向に間隔をおいて配置された２つの冷媒流通管(12)からなる複数の組(13)が左右方向に間隔をおいて配置されており、前後の冷媒流通管(12)よりなる組(13)の隣り合うものどうしの間に間隙(14A)(14B)が形成されている。前側の冷媒流通管(12)の上端部は風下側上ヘッダ部(5)に接続されるとともに、同下端部は風下側下ヘッダ部(9)に接続されている。また、後側の冷媒流通管(12)の上端部は風上側上ヘッダ部(6)に接続されるとともに、同下端部は風上側下ヘッダ部(11)に接続されている。そして、冷媒は、冷媒入口(7)を通ってエバポレータ(1)の風下側上ヘッダ部(5)内に入り、全冷媒流通管(12)を通って風上側上ヘッダ部(6)の冷媒出口(8)から流出するようになっている。   As shown in FIGS. 1 and 2, the heat exchange core (4) has a flat refrigerant made of a plurality of extruded aluminum shapes whose longitudinal direction faces the vertical direction and whose width direction faces the ventilation direction (front-rear direction). The flow pipes (12) are arranged in parallel in the left-right direction (thickness direction of the refrigerant flow pipe (12)). Here, a plurality of sets (13) consisting of two refrigerant flow pipes (12) arranged at intervals in the front-rear direction are arranged at intervals in the left-right direction, and the front and rear refrigerant flow pipes (12) A gap (14A) (14B) is formed between adjacent members of the set (13). An upper end portion of the front refrigerant flow pipe (12) is connected to the leeward upper header portion (5), and a lower end portion thereof is connected to the leeward lower header portion (9). Further, the upper end portion of the rear refrigerant flow pipe (12) is connected to the windward upper header portion (6), and the lower end portion thereof is connected to the windward lower header portion (11). Then, the refrigerant passes through the refrigerant inlet (7) and enters the leeward upper header portion (5) of the evaporator (1), passes through the entire refrigerant flow pipe (12), and flows into the leeward upper header portion (6). It flows out from the outlet (8).

熱交換コア部(4)における全間隙(14A)(14B)に、両面にろう材層を有するアルミニウムブレージングシートからなり、かつ前後方向にのびる波頂部、前後方向にのびる波底部、および波頂部と波底部とを連結する連結部よりなるアルミニウム製コルゲートフィン(15)が、前後両冷媒流通管(12)に跨るように配置されて間隙(14A)(14B)を形成する左右両側の組(13)を構成する前後両冷媒流通管(12)にろう付されている。   The total gap (14A) (14B) in the heat exchange core part (4) is made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and has a wave crest extending in the front-rear direction, a wave bottom extending in the front-rear direction, and a wave crest A pair of aluminum corrugated fins (15) consisting of a connecting part that connects the wave bottom part is arranged so as to straddle both the front and rear refrigerant flow pipes (12) to form a gap (14A) (14B) (13 ) Is brazed to both the front and rear refrigerant flow pipes (12).

熱交換コア部(4)における全間隙(14A)(14B)のうち一部の複数の間隙(14A)でかつ隣接していない間隙(14A)に、熱可塑性エラストマーにパラフィンが固定された潜熱蓄熱材(16)が配置されており、コルゲートフィン(15)と両側の冷媒流通管(12)との間に形成される空間が潜熱蓄熱材(16)で埋められている。潜熱蓄熱材(16)としては、網状構造の熱可塑性エラストマー中に、パラフィンが取り込まれて固定されることにより形成されている潜熱蓄熱材、たとえばＪＳＲ社製、「ＣＡＬＧＲＩＰ」が用いられる。なお、潜熱蓄熱材(16)中のパラフィンの凝固点は、５〜１０℃程度に調整しておくことが好ましい。また、網状構造の熱可塑性エラストマー中に、パラフィンが取り込まれて固定されることにより形成されている潜熱蓄熱材に代えて、他の潜熱蓄熱材、たとえば熱可塑性エラストマー中に、パラフィンを内包するマイクロカプセルが分散固定されることにより形成されている潜熱蓄熱材が用いられてもよい。潜熱蓄熱材(16)が配置された間隙(14A)の風下側端部は開放されている。潜熱蓄熱材(16)の風上側端部は、左右方向に隣り合う管組(13)の風上側冷媒流通管(12)の風上側縁部に跨ってろう付されたアルミニウム製防塵板(17)により覆われている。   Latent heat storage in which paraffin is fixed to thermoplastic elastomer in some gaps (14A) and non-adjacent gaps (14A) among all gaps (14A) (14B) in heat exchange core part (4) The material (16) is disposed, and the space formed between the corrugated fin (15) and the refrigerant flow pipes (12) on both sides is filled with the latent heat storage material (16). As the latent heat storage material (16), a latent heat storage material formed by taking and fixing paraffin in a network-structured thermoplastic elastomer, for example, “CALGRIP” manufactured by JSR Corporation, is used. In addition, it is preferable to adjust the freezing point of the paraffin in the latent heat storage material (16) to about 5 to 10 ° C. Moreover, instead of the latent heat storage material formed by taking and fixing paraffin in the network-structured thermoplastic elastomer, a microcapsule containing paraffin in another latent heat storage material, for example, a thermoplastic elastomer. A latent heat storage material formed by dispersing and fixing capsules may be used. The leeward side end of the gap (14A) in which the latent heat storage material (16) is disposed is open. The windward end of the latent heat storage material (16) is an aluminum dustproof plate (17) brazed across the windward edge of the windward refrigerant circulation pipe (12) of the pipe assembly (13) adjacent in the left-right direction. ).

潜熱蓄熱材(16)が配置された間隙(14A)を除いたすべての間隙(14B)、ここでは潜熱蓄熱材(16)が配置された間隙(14A)の左右両側に隣り合う間隙(14B)は、通風間隙となっている。なお、左右両端の冷媒流通管(12)の組(13)の外側にも両面にろう材層を有するアルミニウムブレージングシートからなるコルゲートフィン(15)が配置されて前後両冷媒流通管(12)にろう付され、さらに左右両端のコルゲートフィン(15)の外側にアルミニウム製サイドプレート(18)が配置されてコルゲートフィン(15)にろう付されている。左右両端の冷媒流通管(12)とサイドプレート(18)との間も通風間隙となっている。   All the gaps (14B) except the gap (14A) where the latent heat storage material (16) is arranged, here, the gaps (14B) adjacent to the left and right sides of the gap (14A) where the latent heat storage material (16) is arranged Is a ventilation gap. In addition, corrugated fins (15) made of an aluminum brazing sheet having brazing filler metal layers on both sides are also arranged outside the set (13) of the refrigerant flow pipes (12) at the left and right ends, and the refrigerant flow pipes (12) at both the front and rear are arranged. The aluminum side plate (18) is disposed outside the corrugated fins (15) at both the left and right ends and brazed to the corrugated fins (15). A ventilation gap is also formed between the refrigerant flow pipes (12) and the side plates (18) at the left and right ends.

上述した蓄冷機能付きエバポレータ(1)は、車両のエンジンを駆動源とする圧縮機、圧縮機から吐出された冷媒を冷却するコンデンサ（冷媒冷却器）、コンデンサを通過した冷媒を減圧する膨張弁（減圧器）とともに冷凍サイクルを構成し、カーエアコンとして、停車時に圧縮機の駆動源であるエンジンを一時的に停止させる車両、たとえば自動車に搭載される。そして、圧縮機が作動している場合には、圧縮機で圧縮されてコンデンサおよび膨張弁を通過した低圧の気液混相の２相冷媒が、冷媒入口(7)を通って蓄冷機能付きエバポレータ(1)の風下側上ヘッダ部(5)内に入り、全冷媒流通管(12)を通って風上側上ヘッダ部(6)の冷媒出口(8)から流出する。冷媒が冷媒流通管(12)内を流れる間に、通風間隙(14B)を通過する空気と熱交換をし、冷媒は気相となって流出する。   The evaporator with a cold storage function (1) described above includes a compressor that uses a vehicle engine as a drive source, a condenser that cools the refrigerant discharged from the compressor (refrigerant cooler), and an expansion valve that depressurizes the refrigerant that has passed through the condenser ( A refrigeration cycle is configured together with a decompressor, and is mounted as a car air conditioner on a vehicle, such as an automobile, that temporarily stops an engine that is a drive source of a compressor when the vehicle is stopped. When the compressor is operating, the low-pressure gas-liquid mixed-phase two-phase refrigerant compressed by the compressor and passed through the condenser and the expansion valve passes through the refrigerant inlet (7) and has an evaporator with a cold storage function ( It enters into the leeward upper header part (5) of 1) and flows out from the refrigerant outlet (8) of the leeward upper header part (6) through the entire refrigerant flow pipe (12). While the refrigerant flows in the refrigerant circulation pipe (12), heat exchange is performed with the air passing through the ventilation gap (14B), and the refrigerant flows out in a gas phase.

圧縮機の作動時には、冷媒流通管(12)内を流れる冷媒の有する冷熱が、冷媒流通管(12)の左右両側壁およびコルゲートフィン(15)を経て潜熱蓄熱材(16)の全体に伝わって潜熱蓄熱材(16)に冷熱が蓄えられる。   During operation of the compressor, the cold heat of the refrigerant flowing in the refrigerant flow pipe (12) is transmitted to the entire latent heat storage material (16) through the left and right side walls of the refrigerant flow pipe (12) and the corrugated fins (15). Cold heat is stored in the latent heat storage material (16).

圧縮機が停止した場合には、潜熱蓄熱材(16)に蓄えられた冷熱が、直接冷媒流通管(12)に伝わるとともに、コルゲートフィン(15)を経て冷媒流通管(12)に伝わり、さらに冷媒流通管(12)を通過して当該冷媒流通管(12)における潜熱蓄熱材(16)が配置された間隙(14A)とは反対側の通風間隙(14B)に配置されているコルゲートフィン(15)に伝わる。そして、コルゲートフィン(15)を介して通風間隙(14B)を通過する空気に伝えられる。したがって、エバポレータ(1)を通過した風の温度が上昇したとしても、当該風は冷却されるので、冷房能力の急激な低下が防止される。   When the compressor is stopped, the cold heat stored in the latent heat storage material (16) is transmitted directly to the refrigerant flow pipe (12), is further transmitted to the refrigerant flow pipe (12) through the corrugated fin (15), and Corrugated fins disposed in the ventilation gap (14B) opposite to the gap (14A) where the latent heat storage material (16) in the refrigerant circulation pipe (12) is disposed through the refrigerant circulation pipe (12) 15) Then, the air is transmitted to the air passing through the ventilation gap (14B) via the corrugated fin (15). Therefore, even if the temperature of the wind that has passed through the evaporator (1) rises, the wind is cooled, so that a rapid decrease in the cooling capacity is prevented.

上記実施形態においては、潜熱蓄熱材(16)の風上側端部は、左右方向に隣り合う管組(13)の風上側冷媒流通管(12)の風上側縁部に跨ってろう付されたアルミニウム製防塵板(17)により覆われているが、これに限定されるものではなく、防塵板(17)は必ずしも必要としない。   In the above embodiment, the windward end of the latent heat storage material (16) is brazed across the windward edge of the windward refrigerant flow pipe (12) of the pipe assembly (13) adjacent in the left-right direction. Although it is covered with the aluminum dustproof plate (17), it is not limited to this, and the dustproof plate (17) is not necessarily required.

上記実施形態においては、この発明による熱交換器が、蓄冷機能付きエバポレータに適用されているが、これに限定されるものではなく、熱交換管が温熱を輸送する媒体を流すものであり、潜熱蓄熱材が、熱交換管内を流れる媒体の有する温熱により加熱されるようになされている熱交換器に適用されることもある。   In the above embodiment, the heat exchanger according to the present invention is applied to an evaporator with a cold storage function, but is not limited to this, and the heat exchange pipe flows a medium for transporting warm heat, and latent heat The heat storage material may be applied to a heat exchanger that is heated by the warm heat of the medium flowing in the heat exchange pipe.

この発明による蓄熱材容器は、停車時に圧縮機の駆動源であるエンジンを一時的に停止させる車両のカーエアコンを構成する冷凍サイクルの蓄冷機能付きエバポレータに好適に用いられる。   The heat storage material container according to the present invention is suitably used for an evaporator with a cold storage function of a refrigeration cycle that constitutes a car air conditioner of a vehicle that temporarily stops an engine that is a drive source of a compressor when the vehicle is stopped.

(1)：蓄冷機能付きエバポレータ（熱交換器）
(12)：冷媒流通管（熱交換管）
(14A)(14B)：間隙
(15)：コルゲートフィン
(16)：潜熱蓄熱材
(17)：防塵板 (1): Evaporator with heat storage function (heat exchanger)
(12): Refrigerant distribution pipe (heat exchange pipe)
(14A) (14B): Gap
(15): Corrugated fin
(16): Latent heat storage material
(17): Dustproof plate

Claims (10)

長手方向を同方向に向けるとともに互いに間隔をおいて並列状に配置された複数の熱交換管を備えており、隣り合う熱交換管どうしの間に形成されたすべての間隙のうち一部の間隙に、熱可塑性エラストマーにパラフィンが固定された潜熱蓄熱材が配置されている熱交換器。 A plurality of heat exchange pipes having a longitudinal direction in the same direction and arranged in parallel at intervals are provided, and a part of all the gaps formed between adjacent heat exchange pipes In addition, a heat exchanger in which a latent heat storage material in which paraffin is fixed to a thermoplastic elastomer is disposed. 隣り合う熱交換管どうしの間に形成されたすべての間隙のうち潜熱蓄熱材が配置されている間隙に、両側の熱交換管と接触するようにフィンが配置されており、フィンと両側の熱交換管との間に形成される空間が潜熱蓄熱材で埋められている請求項１記載の熱交換器。 Of all the gaps formed between adjacent heat exchange tubes, fins are placed in the gaps where the latent heat storage material is placed so as to contact the heat exchange tubes on both sides. The heat exchanger according to claim 1, wherein a space formed between the exchange pipes is filled with a latent heat storage material. 潜熱蓄熱材が、フィンにより保持されている請求項２記載の熱交換器。 The heat exchanger according to claim 2, wherein the latent heat storage material is held by fins. 潜熱蓄熱材が配置されたすべての間隙の通風方向両端部のうち少なくとも風下側端部が開放されている請求項１〜３のうちのいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 3, wherein at least the leeward side end portions of both end portions in the ventilation direction of all the gaps where the latent heat storage material is disposed are opened. 潜熱蓄熱材の風上側端部が、防塵板により覆われ、潜熱蓄熱材が配置された間隙の風下側端部が開放されている請求項４記載の熱交換器。 The heat exchanger according to claim 4, wherein the windward end of the latent heat storage material is covered with a dustproof plate, and the leeward end of the gap in which the latent heat storage material is disposed is opened. 潜熱蓄熱材が、網状構造の熱可塑性エラストマー中に、パラフィンが取り込まれて固定されることにより形成されている請求項１〜５のうちのいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 5, wherein the latent heat storage material is formed by capturing and fixing paraffin in a thermoplastic elastomer having a network structure. 潜熱蓄熱材が、熱可塑性エラストマー中に、パラフィンを内包するマイクロカプセルが分散固定されることにより形成されている請求項１〜５のうちのいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 5, wherein the latent heat storage material is formed by dispersing and fixing microcapsules enclosing paraffin in a thermoplastic elastomer. 熱交換管が冷熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する冷熱により冷却されるようになされ、熱交換管内を流れる媒体が、隣り合うすべての間隙のうち潜熱蓄熱材が配置されていない間隙を流れる空気から熱を奪って気化し、蓄冷機能付きエバポレータとして用いられる請求項１〜７のうちのいずれかに記載の熱交換器。 The heat exchange pipe flows a medium for transporting cold heat, and the latent heat storage material is cooled by the cold heat of the medium flowing in the heat exchange pipe, and the medium flowing in the heat exchange pipe has latent heat in all adjacent gaps. The heat exchanger according to any one of claims 1 to 7, which is used as an evaporator with a cold storage function by removing heat from air flowing through a gap in which no heat storage material is disposed. 潜熱蓄熱材が配置された間隙の両隣に、潜熱蓄熱材が配置されていない間隙がある請求項８記載の熱交換器。 The heat exchanger according to claim 8, wherein there is a gap where no latent heat storage material is arranged, on both sides of the gap where the latent heat storage material is arranged. 熱交換管が温熱を輸送する媒体を流すとともに、潜熱蓄熱材が熱交換管内を流れる媒体の有する温熱により加熱されるようになされている請求項１〜７のうちのいずれかに記載の熱交換器。 The heat exchange according to any one of claims 1 to 7, wherein the heat exchange pipe flows a medium for transporting warm heat, and the latent heat storage material is heated by the warm heat of the medium flowing in the heat exchange pipe. vessel.
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