JP5764335B2 - Evaporator with cool storage function - Google Patents

Evaporator with cool storage function Download PDF

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JP5764335B2
JP5764335B2 JP2011016167A JP2011016167A JP5764335B2 JP 5764335 B2 JP5764335 B2 JP 5764335B2 JP 2011016167 A JP2011016167 A JP 2011016167A JP 2011016167 A JP2011016167 A JP 2011016167A JP 5764335 B2 JP5764335 B2 JP 5764335B2
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storage material
refrigerant
cold storage
refrigerant flow
water channel
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JP2012154595A (en
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直久 東山
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
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Description

この発明は、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に用いられる蓄冷機能付きエバポレータに関する。   The present invention relates to an evaporator with a cold storage function used in 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.

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、上下方向に間隔をおいて配置された１対のタンクと、両タンク間に、幅方向を通風方向に向けるとともにタンクの長さ方向に間隔をおいて配置され、かつ両端部がそれぞれ両タンクに通じさせられた複数の扁平状冷媒流通管と、上下方向にのびるとともに冷媒流通管に熱的に接触させられた複数の蓄冷材容器とを備えており、各蓄冷材容器内に潜熱蓄冷材が封入されており、蓄冷材容器内の蓄冷材が、冷媒流通管内を流れる冷媒の有する冷熱により冷却されるようにな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）。   As an evaporator with this kind of cold storage function, a pair of tanks arranged at intervals in the vertical direction, and between the two tanks, the width direction is directed in the direction of ventilation and the tanks are arranged at intervals in the length direction. And a plurality of flat refrigerant flow pipes whose both ends are respectively communicated with both tanks, and a plurality of cold storage material containers that extend in the vertical direction and are in thermal contact with the refrigerant flow pipes, An evaporator with a regenerator function is proposed in which a latent heat regenerator material is enclosed in a regenerator material container, and the regenerator material in the regenerator material container is cooled by the cold heat of the refrigerant flowing in the refrigerant distribution pipe. (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、蓄冷材容器内の蓄冷材に伝わって蓄冷材に蓄えられ、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、蓄冷材容器が熱的に接触させられた冷媒流通管を通って通風間隙に配置されたフィンに伝えられ、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 the cold storage function described in Patent Document 1, during normal cooling when the compressor is operating, the cold heat of the refrigerant flowing in the refrigerant distribution pipe is transmitted to the cold storage material in the cold storage material container and stored in the cold storage material. When the compressor is stopped, the cold energy stored in the cool storage material in the cool storage material container passes through the refrigerant flow pipe in which the cool storage material container is in thermal contact with the fins arranged in the ventilation gap. It is transmitted and it cools to the air which flows through the said ventilation gap from a fin.

ところで、この種の蓄冷機能付きエバポレータの蓄冷材容器内に封入される蓄冷材としては、融点が５〜１０℃に調整されたパラフィン系の潜熱蓄熱材を用いるのが一般的である。たとえば特許文献１に記載された蓄冷機能付きエバポレータにおいても、蓄冷材容器内に封入される蓄冷材としては、融点が６℃であるテトラデカンが用いられている。   By the way, as a cool storage material enclosed in the cool storage material container of this kind of evaporator with a cool storage function, it is common to use the paraffin-type latent heat storage material in which melting | fusing point was adjusted to 5-10 degreeC. For example, also in the evaporator with a cool storage function described in Patent Document 1, tetradecane having a melting point of 6 ° C. is used as the cool storage material enclosed in the cool storage material container.

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おいては、圧縮機が停止した際に、蓄冷材容器内の蓄冷材に蓄えられた冷熱のみが、通風間隙に配置されたフィンに伝えられ、フィンから当該通風間隙を流れる空気に放冷されるので、比較的短時間で蓄冷材に蓄えられた冷熱が消費されて放冷時間が短くなる可能性がある。また、蓄冷材の融点が５〜１０℃であるから、エバポレータの冷媒流通管内を流れる冷媒の温度が５℃よりも低くなった場合には、それ以上の冷熱を蓄えることができない。   However, in the evaporator with the cold storage function described in Patent Document 1, when the compressor stops, only the cold heat stored in the cold storage material in the cold storage material container is transmitted to the fins arranged in the ventilation gap, and from the fins Since it cools to the air which flows through the said ventilation gap, the cool heat stored in the cool storage material is consumed in a comparatively short time, and there is a possibility that the cool time is shortened. Moreover, since the melting | fusing point of a cool storage material is 5-10 degreeC, when the temperature of the refrigerant | coolant which flows through the inside of the refrigerant | coolant circulation pipe | tube of an evaporator becomes lower than 5 degreeC, the cold heat beyond that cannot be stored.

特許第４０４３７７６号公報Japanese Patent No. 4043776

この発明の目的は、上記問題を解決し、放冷時間を延長しうる蓄冷機能付きエバポレータを提供することにある。   An object of the present invention is to provide an evaporator with a cold storage function that can solve the above-described problems and extend the cooling time.

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)上下方向にのびるとともに幅方向が通風方向を向いた状態で互いに間隔をおいて並列状に配置された複数の扁平状冷媒流通管と、上下方向にのびるとともに幅方向が通風方向を向き、かつ内部に蓄冷材が封入された複数の扁平状蓄冷材容器とを有し、蓄冷材容器が、少なくとも一部が冷媒流通管に沿うように配置されて冷媒流通管に熱的に接触させられ、蓄冷材容器内の蓄冷材が、冷媒流通管内を流れる冷媒の有する冷熱により冷却されるようになされている蓄冷機能付きエバポレータにおいて、
冷媒流通管と、蓄冷材容器における冷媒流通管に沿う部分との間に、蓄冷材容器の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に流す水路が、蓄冷材容器の上端部から下端部にかけて設けられており、
蓄冷材容器の冷媒流通管側を向いた面に、冷媒流通管側に突出して突出端が冷媒流通管に接触するとともに風上側から風下側に向かって下方に傾斜し、かつ熱交換コア部の風上側部分から風下側部分に至る複数の第１水路形成用凸条と、冷媒流通管側に突出して突出端が冷媒流通管に接触するとともに風上側から風下側に向かって上方に傾斜し、かつ熱交換コア部の風上側部分から風下側部分に至る複数の第２水路形成用凸条とが、上下方向に間隔をおくとともに上下方向に交互に並んで設けられ、第１水路形成用凸条と第１水路形成用凸条の直下に間隔をおいて設けられた第２水路形成用凸条とからなる第１の組、および第２水路形成用凸条と第２水路形成用凸条の直下に間隔をおいて設けられた第１水路形成用凸条とからなる第２の組を有し、前記第１の組において、第１水路形成用凸条の風下側端部が、第２水路形成用凸条の風下側端部よりも風上側でかつ第２水路形成用凸条よりも上方に位置し、前記第２の組において、第２水路形成用凸条の風上側端部が、第１水路形成用凸条の風上側端部よりも風下側でかつ第１水路形成用凸条よりも上方に位置している蓄冷機能付きエバポレータ。 1) A plurality of flat refrigerant flow pipes that are arranged in parallel with an interval between each other in a state of extending in the vertical direction and in the width direction facing the ventilation direction, and extending in the vertical direction and the width direction in the ventilation direction, And a plurality of flat regenerator containers enclosing the regenerator material, and the regenerator container is arranged so that at least a part thereof is along the refrigerant flow pipe and is brought into thermal contact with the refrigerant flow pipe. In the evaporator with a cold storage function, the cold storage material in the cold storage material container is cooled by the cold heat of the refrigerant flowing in the refrigerant circulation pipe.
Between the refrigerant circulation pipe and the portion along the refrigerant circulation pipe in the cold storage material container, the length of the cold storage material container is longer than the vertical direction, and the condensed water generated is generated from the top to the bottom. A flowing water channel is provided from the upper end to the lower end of the cool storage material container ,
The surface of the cold storage material container facing the refrigerant flow pipe side protrudes toward the refrigerant flow pipe side, the protruding end contacts the refrigerant flow pipe and is inclined downward from the windward side toward the leeward side, and the heat exchange core part A plurality of first water channel forming ridges extending from the windward side part to the leeward side part, projecting toward the refrigerant flow pipe side and projecting ends contacting the refrigerant flow pipe and inclined upward from the windward side toward the leeward side; A plurality of second water channel forming ridges extending from the windward side portion to the leeward side portion of the heat exchange core portion are provided in the vertical direction and alternately arranged in the vertical direction. A first pair of second water channel forming ridges and a second water channel forming ridge that are provided immediately below the first water channel forming ridges, and a second water channel forming ridge. A second set of first waterway forming ridges provided at an interval directly below In the first set, the leeward side end of the first waterway forming ridge is on the leeward side than the leeward side end of the second waterway forming ridge and more than the second waterway forming ridge. In the second set, the leeward end of the second waterway forming ridge is leeward than the windward end of the first waterway forming ridge and is the first waterway forming convex in the second set. Evaporator with cool storage function located above the strip.

2)隣り合う冷媒流通管どうしの間に間隙が形成されるとともに、蓄冷材容器の数が間隙の数よりも少なくなされ、全間隙のうち一部の複数の間隙に蓄冷材容器が配置されるとともに、蓄冷材容器の両面が両側の冷媒流通管の片面に沿わされ、蓄冷材容器の両面のうち少なくとも片面と冷媒流通管の片面との間に水路が形成され、残りの間隙にフィンが配置されている上記1)記載の蓄冷機能付きエバポレータ。 With a gap is formed between the refrigerant tubes each other for 2) adjacent the number of cold storage container is made smaller than the number of gaps, cold storage container are arranged in a plurality of gap portions of the total gap At the same time, both sides of the cold storage material container are aligned along one side of the refrigerant flow pipe on both sides, a water channel is formed between at least one side of the cold storage material container and one side of the refrigerant flow pipe, and fins are arranged in the remaining gap. The evaporator with a cold storage function as described in 1) above.

3)各冷媒流通管および蓄冷材容器が、それぞれ幅方向を通風方向に向けた扁平状であり、各冷媒流通管の片面側のみに蓄冷材容器が配置されるとともに蓄冷材容器の片面が冷媒流通管の片面に沿わされ、蓄冷材容器の片面と冷媒流通管の片面との間に水路が形成され、冷媒流通管および蓄冷材容器からなる組み合わせ体が、冷媒流通管の幅方向と直角をなす方向に間隔をおいて配置され、隣り合う組み合わせ体どうしの間が風が通る間隙とされ、当該間隙にフィンが配置されている上記1)記載の蓄冷機能付きエバポレータ。 3) Each refrigerant distribution pipe and the cold storage material container are each flat in the width direction in the ventilation direction, the cold storage material container is disposed only on one side of each refrigerant distribution pipe, and one side of the cold storage material container is the refrigerant Along the one side of the flow pipe, a water channel is formed between one side of the cold storage material container and one side of the refrigerant flow pipe, and the combination consisting of the refrigerant flow pipe and the cold storage material container is perpendicular to the width direction of the refrigerant flow pipe. The evaporator with a cool storage function according to 1) above, wherein the evaporator is disposed at intervals in a direction formed between the adjacent combinations, and a gap is provided between the adjacent combinations, and fins are disposed in the gap .

4)蓄冷材容器における冷媒流通管側を向いた面に、両水路形成用凸条よりも短くかつ風上側から風下側に向かって上方および／または下方に傾斜しているとともに、突出端が冷媒流通管に接触する複数の短凸条が間隔をおいて設けられている上記1)〜3)のうちのいずれかに記載の蓄冷機能付きエバポレータ。 4) The surface of the cool storage material container facing the refrigerant flow pipe side is shorter than the two water channel forming ridges and is inclined upward and / or downward from the windward side to the leeward side, and the protruding end is the refrigerant. The evaporator with a cold storage function according to any one of the above 1) to 3), wherein a plurality of short ridges contacting the flow pipe are provided at intervals.

5)すべての蓄冷材容器のうち少なくとも一部の複数の蓄冷材容器の内部空間どうしが連通部を介して通じさせられている上記1)〜4)のうちのいずれかに記載の蓄冷機能付きエバポレータ。 5) With the regenerator function according to any one of the above 1) to 4) , wherein the internal spaces of at least some of the regenerator containers among all the regenerator containers are communicated with each other through the communication portion. Evaporator.

上記1)〜5)の蓄冷機能付きエバポレータによれば、冷媒流通管と、蓄冷材容器における冷媒流通管に沿う部分との間に、蓄冷材容器の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に流す水路が設けられているので、圧縮機が作動している通常の冷房時に、水路内に凝縮水が発生するとともに、発生した凝縮水が凍結することがある。そして、圧縮機が停止した際に、蓄冷材封入部の蓄冷材貯留部内の蓄冷材に蓄えられた冷熱だけではなく、水路を流れる凝縮水の顕熱としての冷熱や、水路内において凝縮水が凍結していた場合には、凍結した凝縮水の潜熱としての冷熱および溶融した後に水路を流れる凝縮水の顕熱としての冷熱が、冷媒流通管を経て間隙を流れる空気に放冷されるので、放冷時間を延長することができる。 According to the evaporator with a cool storage function of 1) to 5) above, the length of the cool storage material container is longer than the vertical length of the cool storage material container between the coolant circulation pipe and the portion of the cool storage material container along the coolant circulation pipe. Condensate is generated in the water channel during normal cooling when the compressor is operating because the water channel for generating condensed water and flowing the condensed water from top to bottom is provided. May freeze. And when the compressor stops, not only the cold heat stored in the cold storage material in the cold storage material storage part of the cold storage material enclosure, but also the cold heat as the sensible heat of the condensed water flowing through the water channel, and the condensed water in the water channel In the case of freezing, since the cold heat as the latent heat of the frozen condensed water and the cold heat as the sensible heat of the condensed water flowing through the water channel after being melted are cooled to the air flowing through the gap through the refrigerant flow pipe, The cooling time can be extended.

また、融点が５〜１０℃の蓄冷材を使用し、エバポレータの冷媒流通管内を流れる冷媒の温度が５℃よりも低くなった場合には、水路内に発生した凝縮水を凍結させることによって、凝縮水に潜熱としての冷熱を蓄えることができる。   Moreover, when the temperature of the refrigerant | coolant which flows through the inside of the refrigerant | coolant distribution pipe | tube of an evaporator becomes lower than 5 degreeC using the cool storage material whose melting | fusing point is 5-10 degreeC, by condensing the condensed water which generate | occur | produced in the water channel, Cold water as latent heat can be stored in the condensed water.

上記1)の蓄冷機能付きエバポレータによれば、水路の長さを効果的に長くすることができるので、水路を流れる凝縮水の顕熱としての冷熱を長時間にわたって冷媒流通管を経て間隙を流れる空気に放冷することができ、放冷時間を延長することができる。  According to the evaporator with the cold storage function of 1) above, the length of the water channel can be effectively lengthened, so that the cold heat as the sensible heat of the condensed water flowing through the water channel flows through the gap through the refrigerant circulation pipe for a long time. It can be cooled to air, and the cooling time can be extended.

上記1)の蓄冷機能付きエバポレータによれば、蓄冷材容器における冷媒流通管に沿う面と冷媒流通管の片面との間に、蓄冷材容器の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に流す水路を、比較的簡単に設けることができる。 According to the evaporator with a cool storage function of 1) above, the length of the cool storage material container between the surface along the coolant circulation pipe and one side of the coolant circulation pipe is longer than the vertical length of the cool storage material container, and condensed water is contained inside. It is possible to relatively easily provide a water channel that causes the generated condensed water to flow downward from above .

上記2)および3)の蓄冷機能付きエバポレータによれば、冷媒流通管と、蓄冷材容器における冷媒流通管に沿う部分との間に、水路を設けやすくなる。 According to the evaporator with a cool storage function of the 2) and 3), the refrigerant tubes, between the portion along the refrigerant tubes in cold storage container, ease provided waterways Kunar.

上記4)の蓄冷機能付きエバポレータによれば、蓄冷材容器と冷媒流通管との接触面積を増大させることができ、蓄冷時および放冷時の両者間での冷熱の伝熱を効率良く行うことができる。しかも、短凸条は、風上側から風下側に向かって上方および／または下方に傾斜しているので、凝縮水の水路への流入を妨げることが防止される。 According to the evaporator with the cold storage function of 4) above , the contact area between the cold storage material container and the refrigerant circulation pipe can be increased, and the heat transfer between the cold storage and the cool-down can be efficiently performed. Can do. Moreover, since the short ridges are inclined upward and / or downward from the windward side toward the leeward side, it is possible to prevent the inflow of the condensed water into the water channel.

この発明の蓄冷機能付きエバポレータの全体構成を示す一部切り欠き斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway perspective view showing an overall configuration of an evaporator with a cold storage function of the present invention. 図１のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 図１の蓄冷機能付きエバポレータの蓄冷材容器を示す右側面図である。It is a right view which shows the cool storage material container of the evaporator with a cool storage function of FIG. 図１の蓄冷機能付きエバポレータの蓄冷材容器を示す分解斜視図である。It is a disassembled perspective view which shows the cool storage material container of the evaporator with a cool storage function of FIG. この発明の蓄冷機能付きエバポレータの他の実施形態を示す図２相当の断面図である。It is sectional drawing equivalent to FIG. 2 which shows other embodiment of the evaporator with a cool storage function of this invention.

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する。また、前方から後方を見た際の左右、すなわち図１の左右を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 the front, and the opposite side is the rear. Further, the left and right when viewing the rear from the front, that is, the left and right in FIG.

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はこの発明による蓄冷機能付きエバポレータの全体構成を示し、図２〜図４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 according to the present invention, and FIGS.

図１において、蓄冷機能付きエバポレータ(1)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第１ヘッダタンク(2)およびアルミニウム製第２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 with a cold storage function (1) includes an aluminum first header tank (2) and an aluminum second header tank (3) extending in the horizontal direction and spaced apart in the vertical direction, and both headers. And a heat exchange core part (4) provided between the tanks (2) and (3).

第１ヘッダタンク(2)は、前側（通風方向下流側）に位置する冷媒入口ヘッダ部(5)と、後側（通風方向上流側）に位置しかつ冷媒入口ヘッダ部(5)に一体化された冷媒出口ヘッダ部(6)とを備えている。冷媒入口ヘッダ部(5)の右端部に冷媒入口(7)が設けられ、冷媒出口ヘッダ部(6)の右端部に冷媒出口(8)が設けられている。第２ヘッダタンク(3)は、前側に位置する第１中間ヘッダ部(9)と、後側に位置しかつ第１中間ヘッダ部(9)に一体化された第２中間ヘッダ部(11)とを備えている。第２ヘッダタンク(3)の第１中間ヘッダ部(9)内と第２中間ヘッダ部(11)内とは、両中間ヘッダ部(9)(11)の右端部に跨って接合され、かつ内部が通路となった連通部材(12)を介して通じさせられている。   The first header tank (2) is integrated with the refrigerant inlet header (5) located on the front side (downstream in the ventilation direction) and the refrigerant inlet header (5) located on the rear side (upstream in the ventilation direction). And a refrigerant outlet header portion (6). A refrigerant inlet (7) is provided at the right end of the refrigerant inlet header (5), and a refrigerant outlet (8) is provided at the right end of the refrigerant outlet header (6). The second header tank (3) includes a first intermediate header portion (9) located on the front side and a second intermediate header portion (11) located on the rear side and integrated with the first intermediate header portion (9). And. The first intermediate header portion (9) and the second intermediate header portion (11) of the second header tank (3) are joined across the right end portions of the intermediate header portions (9) and (11), and The inside is communicated via a communication member (12) that forms a passage.

図１および図２に示すように、熱交換コア部(4)には、上下方向にのびる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(13)が、左右方向に間隔をおいて並列状に配置されている。すなわち、前後方向に間隔をおいて配置された複数、ここでは２つの冷媒流通管(13)からなる複数の組(14)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(13)よりなる組(14)の隣り合うものどうしの間に間隙(15)が形成されている。前側の冷媒流通管(13)の上端部は冷媒入口ヘッダ部(5)に接続されるとともに、同下端部は第１中間ヘッダ部(9)に接続されている。また、後側の冷媒流通管(13)の上端部は冷媒出口ヘッダ部(6)に接続されるとともに、同下端部は第２中間ヘッダ部(11)に接続されている。 As shown in FIG. 1 and FIG. 2, the heat exchange core (4) has a plurality of extruded aluminum flat refrigerant flow pipes that extend in the vertical direction and whose width direction faces the ventilation direction (front-rear direction). 13) are arranged in parallel at intervals in the left-right direction. That is, a plurality of sets (14) composed of a plurality of refrigerant distribution pipes (13) arranged at intervals in the front-rear direction, here two refrigerant distribution pipes (13), are arranged at intervals in the left-right direction. A gap (15) is formed between adjacent ones of the group (14) consisting of (13). The upper end of the front refrigerant flow pipe (13) is connected to the refrigerant inlet header (5), and the lower end is connected to the first intermediate header (9). The upper end of the rear refrigerant flow pipe (13) is connected to the refrigerant outlet header (6), and the lower end is connected to the second intermediate header (11).

熱交換コア部(4)における全間隙(15)のうち一部の複数の間隙(15)でかつ隣接していない間隙(15)において、密閉状の内部空間(16a)内に蓄冷材（図示略）が封入されたアルミニウム製扁平状蓄冷材容器(16)が、幅方向を前後方向に向けた状態で前後両冷媒流通管(13)に跨るように配置されており、蓄冷材容器(16)の左右両面の少なくとも一部がそれぞれ左右両側の冷媒流通管(13)の片面に沿わされている。すなわち、蓄冷機能付きエバポレータ(1)は、間隙(15)の数よりも少ない数の複数の蓄冷材容器(16)を備えている。また、残りの間隙(15)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るコルゲート状のアウターフィン(17)が、前後両冷媒流通管(13)に跨るように配置されて間隙(15)を形成する左右両側の組(14)を構成する前後両冷媒流通管(13)にろう付されており、蓄冷材容器(16)が配置された間隙(15)の両側の間隙(15)にそれぞれアウターフィン(17)が配置されている。また、左右両端の冷媒流通管(13)の組(14)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アウターフィン(17)が配置されて前後両冷媒流通管(13)にろう付され、さらに左右両端のアウターフィン(17)の外側にアルミニウム製サイドプレート(18)が配置されてアウターフィン(17)にろう付されている。 Among the total gaps (15) in the heat exchange core part (4), some of the gaps (15) and non-adjacent gaps (15) have a cold storage material (shown in the sealed internal space (16a)). An aluminum flat cold storage container (16) enclosed in abbreviated) is placed so as to straddle the front and rear refrigerant flow pipes (13) with the width direction facing the front and rear direction, and the cold storage container (16 ) At least a part of both the left and right sides of the refrigerant distribution pipe (13) on both the left and right sides. That is, the evaporator with a cold storage function (1) includes a plurality of cold storage material containers (16) whose number is smaller than the number of gaps (15). Further, the remaining gap (15), corrugated outer fins made of aluminum brazing sheet (17) is disposed so as to straddle the front and rear refrigerant flow tube (13) a gap (15 having a brazing material layer over opposite surfaces ) And the gaps (15) on both sides of the gap (15) in which the cold storage material container (16) is disposed. Outer fins (17) are respectively arranged on the respective sides. In addition, outer fins (17) made of an aluminum brazing sheet having a brazing filler metal layer on both sides are also arranged outside the set (14) of the refrigerant flow pipes (13) at the left and right ends, and the front and rear refrigerant flow pipes (13) are arranged. An aluminum side plate (18) is disposed outside the outer fins (17) at both the left and right ends and brazed to the outer fins (17).

蓄冷材容器(16)は、前側冷媒流通管(13)の前側縁よりも後方に位置し、かつ各組(14)の前後２つの冷媒流通管(13)にろう付された本体部(21)と、本体部(21)の前側縁部（風下側縁部）に連なるとともに前側冷媒流通管(13)の前側縁よりも前方（通風方向外側）に張り出すように設けられた外方張り出し部(22)とを備えており、本体部(21)の左右両面がそれぞれ左右両側の冷媒流通管(13)の片面に沿わされている。   The cold storage material container (16) is located behind the front edge of the front refrigerant flow pipe (13) and is brazed to the two refrigerant flow pipes (13) before and after each pair (14) (21 ) And the front edge (leeward edge) of the main body (21) and the outward protrusion provided to protrude forward (outside the ventilation direction) from the front edge of the front refrigerant flow pipe (13) Part (22), and the left and right sides of the main body part (21) are respectively aligned with one side of the refrigerant flow pipe (13) on both the left and right sides.

図３に示すように、蓄冷材容器(16)の本体部(21)における冷媒流通管(13)に沿う左右両面と冷媒流通管(13)との間に、蓄冷材容器(16)の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に流す水路(23)が設けられている。水路(23)は、蓄冷材容器(16)の上端部から下端部にかけて設けられており、凝縮水を蛇行状に流す。水路(23)は、蓄冷材容器(16)の本体部(21)の左右両面に、風上側（前側）から風下側（後側）に向かって下方に傾斜した第１の水路形成用凸条(24)と、風上側から風下側に向かって上方に傾斜した第２の水路形成用凸条(25)とが、上下方向に間隔をおいて交互に形成されることによって設けられている。両水路形成用凸条(24)(25)は、それぞれ本体部(21)の左右両側壁を外方に突出するように変形させることにより形成されており、両水路形成用凸条(24)(25)の突出端は、冷媒流通管(13)に接触させられてろう付されている。第１の水路形成用凸条(24)の風上側端部は、第２の水路形成用凸条(25)の風上側端部よりも風上側に位置しており、第１の水路形成用凸条(24)の風下側端部は、第２の水路形成用凸条(25)の風下側端部よりも風上側に位置している。すなわち、蓄冷材容器(16)の本体部(21)は、第１の水路形成用凸条(24)と、第１の水路形成用凸条(24)の直下に間隔を設けられた第２の水路形成用凸条(25)とからなる組を有しており、前記２つの水路形成用凸条(24)(25)からなる組において、第１の水路形成用凸条(24)の風上側端部および風下側端部が、それぞれ第２の水路形成用凸条(25)の風上側端部および風下側端部よりも風上側に位置している。そして、第１の水路形成用凸条(24)の上面に沿って風下側に流れた凝縮水が、その風下側端部から第２の水路形成用凸条(25)の上面に流下して第２の水路形成用凸条(25)の上面に沿って風上側に流れ、その風上側端部から第１の水路形成用凸条(24)の上面に流下して風下側に流れることを繰り返すことによって、水路(23)内で発生した凝縮水が、水路(23)を蓄冷材容器(16)の上端部から下端部に向かって蛇行状に流れる。   As shown in FIG. 3, the upper and lower sides of the cool storage material container (16) are disposed between the left and right sides along the coolant circulation pipe (13) and the coolant circulation pipe (13) in the main body (21) of the cool storage material container (16). A water channel (23) that is longer than the length of the direction and that generates condensed water inside and allows the generated condensed water to flow from top to bottom is provided. The water channel (23) is provided from the upper end portion to the lower end portion of the cold storage material container (16), and allows the condensed water to flow in a meandering manner. The water channel (23) is a first ridge for forming a water channel that is inclined downward from the windward side (front side) toward the leeward side (rear side) on the left and right sides of the main body (21) of the cold storage material container (16). (24) and second ridges (25) for forming a water channel inclined upward from the windward side toward the leeward side are provided by being alternately formed at intervals in the vertical direction. Both water channel forming ridges (24), (25) are formed by deforming the left and right side walls of the main body (21) so as to protrude outward, and both water channel forming ridges (24) The protruding end of (25) is brought into contact with the refrigerant flow pipe (13) and brazed. The windward end of the first waterway forming ridge (24) is located on the windward side of the windward end of the second waterway forming ridge (25), and the first waterway forming ridge (24) The leeward side end of the ridge (24) is located on the leeward side of the leeward side end of the second waterway forming ridge (25). That is, the main body part (21) of the cold storage material container (16) is spaced apart from the first water channel forming ridge (24) and the first water channel forming ridge (24). Of the first channel forming ridge (24) in the group consisting of the two channel forming ridges (24), (25). The windward end and the leeward end are located on the windward side of the windward end and the leeward end of the second waterway forming ridge (25), respectively. And the condensed water which flowed to the leeward side along the upper surface of the first water channel forming ridge (24) flows down from the leeward side end portion to the upper surface of the second water channel forming ridge (25). It flows to the windward side along the upper surface of the second water channel forming ridge (25), and flows down from the windward end to the upper surface of the first water channel forming ridge (24) and flows to the leeward side. By repeating, the condensed water generated in the water channel (23) flows in a meandering manner through the water channel (23) from the upper end portion to the lower end portion of the cool storage material container (16).

また、蓄冷材容器(16)の本体部(21)における冷媒流通管(13)に沿う左右両面に、両水路形成用凸条(24)(25)よりも短くかつ風上側から風下側に向かって下方に傾斜している複数の第１短凸条(26)と、風上側から風下側に向かって上方に傾斜している複数の第２短凸条(27)とが、それぞれ本体部(21)の左右両側壁を外方に突出するように変形させることにより間隔をおいて設けられており、両短凸条(26)(27)の突出端は冷媒流通管(13)に接触させられてろう付されている。第１短凸条(26)は、第１の水路形成用凸条(24)の風下側部分の上方に上下方向に間隔をおいて複数設けられ、第２短凸条(27)は、第２の水路形成用凸条(25)の風上側部分の上方に上下方向に間隔をおいて複数設けられている。すべての凸条(24)(25)(26)(27)間には隙間が存在しており、これにより通風部が確保されている。なお、すべての凸条(24)(25)(26)(27)の突出高さは等しくなっている。   Further, on both the left and right sides along the refrigerant flow pipe (13) in the main body (21) of the cool storage material container (16), it is shorter than both the water channel forming ridges (24) and (25) and extends from the leeward side toward the leeward side. A plurality of first short ridges (26) inclined downward and a plurality of second short ridges (27) inclined upward from the windward side toward the leeward side are respectively the main body portions ( The left and right side walls of 21) are deformed so as to protrude outward, and are provided at an interval, and the protruding ends of both short ridges (26) (27) are brought into contact with the refrigerant flow pipe (13). It is brazed. A plurality of first short ridges (26) are provided above the leeward side portion of the first water channel forming ridge (24) at intervals in the vertical direction, and the second short ridges (27) A plurality of water channel forming ridges (25) are provided above and on the windward side of the ridge (25) at intervals in the vertical direction. There are gaps between all the ridges (24), (25), (26), and (27), thereby securing a ventilation portion. Note that the protruding heights of all the ridges (24), (25), (26), and (27) are equal.

蓄冷材容器(16)の外方張り出し部(22)は、上下方向の寸法が本体部(21)の上下方向の寸法と等しく、かつ左右方向の寸法が本体部(21)の左右方向の寸法よりも大きくなっており、本体部(21)に対して左右方向外方に膨出している。外方張り出し部(22)の左右方向の寸法は、冷媒流通管(13)の左右方向の寸法である管高さの２倍に、蓄冷材容器(16)の本体部(21)の左右方向の寸法と、左右両側の凸条(24)(25)(26)(27)の突出高さを加えた高さと等しくなっている。   The outwardly projecting portion (22) of the cold storage material container (16) has the vertical dimension equal to the vertical dimension of the main body (21) and the horizontal dimension is the horizontal dimension of the main body (21). It is larger than the main body part (21) and bulges outward in the left-right direction. The lateral dimension of the outward projecting part (22) is twice the pipe height, which is the lateral dimension of the refrigerant flow pipe (13), and the lateral direction of the main body part (21) of the regenerator container (16). And the height obtained by adding the protruding heights of the left and right ridges (24), (25), (26), and (27).

蓄冷材容器(16)内には、本体部(21)の後端部から外方張り出し部(22)の前端部に至るアルミニウム製インナーフィン(28)が、上下方向のほぼ全体にわたって配置されている。インナーフィン(28)は、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コルゲート状である。インナーフィン(28)のフィン高さは全体に等しく、蓄冷材容器(16)の本体部(21)の左右両側壁内面にろう付されている。   In the cold storage material container (16), an aluminum inner fin (28) extending from the rear end portion of the main body portion (21) to the front end portion of the outwardly projecting portion (22) is disposed over substantially the entire vertical direction. Yes. The inner fin (28) has a corrugated shape including a wave crest extending in the front-rear direction, a wave bottom extending in the front-rear direction, and a connecting portion connecting the wave crest and the wave bottom. The fins of the inner fins (28) have the same height, and are brazed to the inner surfaces of the left and right side walls of the main body (21) of the cool storage material container (16).

蓄冷材容器(16)内へ充填される蓄冷材としては、凝固点が５〜１０℃程度に調整されたパラフィン系潜熱蓄冷材が用いられる。具体的には、ペンタデカン、テトラデカンなどが用いられる。蓄冷材容器(16)内の蓄冷材充填率（蓄冷材容器(16)の密閉された内部空間(16a)の内容積に対する封入された蓄冷材の体積の比率）は、７０〜９０％、好ましくは７０〜８０％である。   As the regenerator material filled in the regenerator material container (16), a paraffin-based latent heat regenerator material whose freezing point is adjusted to about 5 to 10 ° C is used. Specifically, pentadecane, tetradecane, or the like is used. Cold storage material filling rate in the cold storage material container (16) (ratio of the volume of the enclosed cold storage material to the internal volume of the sealed internal space (16a) of the cold storage material container (16)) is preferably 70 to 90%, preferably Is 70-80%.

図４に示すように、蓄冷材容器(16)は、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にプレス加工が施されることにより形成され、かつ周縁部どうしが互いにろう付された２枚の略縦長方形状アルミニウム板(29)(31)よりなる。蓄冷材容器(16)を構成する右側のアルミニウム板(29)における本体部(21)を形成する部分、すなわち前側部分を除いた大部分には、右方に膨出した第１膨出部(32)が設けられ、同じく外方張り出し部(22)を形成する部分、すなわち前側部分には、第１膨出部(32)の前側に連なるとともに右方に膨出し、かつ第１膨出部(32)よりも膨出高さの高い第２膨出部(33)が、上下方向の全長にわたって設けられている。第１膨出部(32)の膨出頂壁(32a)に、両水路形成用凸条(24)(25)および両短凸条(26)(27)が形成されている。蓄冷材容器(16)を構成する左側のアルミニウム板(31)は、右側アルミニウム板(29)を左右逆向きにしたものであり、同一部分には同一符号を付す。   As shown in FIG. 4, the cold storage material container (16) is formed by pressing an aluminum brazing sheet having a brazing material layer on both sides, and the peripheral portions are brazed to each other. It consists of substantially vertical rectangular aluminum plates (29) and (31). A portion of the right aluminum plate (29) constituting the cold storage material container (16) forming the main body portion (21), that is, most of the portion excluding the front side portion, is a first bulge portion bulging rightward ( 32) is provided, and the portion that also forms the outwardly projecting portion (22), that is, the front portion, is connected to the front side of the first bulging portion (32) and bulges to the right, and the first bulging portion A second bulging portion (33) having a bulging height higher than (32) is provided over the entire length in the vertical direction. On the bulging top wall (32a) of the first bulging portion (32), both water channel forming ridges (24) and (25) and both short ridges (26) and (27) are formed. The left aluminum plate (31) constituting the cold storage material container (16) is the right aluminum plate (29) reversed in the left-right direction, and the same parts are denoted by the same reference numerals.

そして、２枚のアルミニウム板(29)(31)を、インナーフィン(28)を間に挟んで第１および第２膨出部(32)(33)の開口どうしが対向するように組み合わせ、この状態でろう付することによって蓄冷材容器(16)が形成されている。ここで、両アルミニウム板(29)(31)の第１膨出部(32)により本体部(21)が形成され、第２膨出部(33)により外方張り出し部(22)が形成されている。   Then, the two aluminum plates (29) and (31) are combined so that the openings of the first and second bulge portions (32) and (33) face each other with the inner fin (28) interposed therebetween. The cold storage material container (16) is formed by brazing in a state. Here, a main body part (21) is formed by the first bulge part (32) of both aluminum plates (29) and (31), and an outwardly projecting part (22) is formed by the second bulge part (33). ing.

アウターフィン(17)は、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コルゲート状である。アウターフィン(17)は、前側冷媒流通管(13)の前側縁よりも後方に位置し、かつ各組(14)の前後の冷媒流通管(13)にろう付されたフィン本体部(34)と、フィン本体部(34)の前側縁に連なるとともに後側冷媒流通管(13)の前側縁よりも前方に張り出すように設けられた外方張り出し部(35)とを備えている。そして、蓄冷材容器(16)が配置された間隙(15)の両隣の間隙(15)に配置されたアウターフィン(17)の外方張り出し部(35)が、蓄冷材容器(16)の外方張り出し部(22)の左右両側面にろう付されている。また、隣接するアウターフィン(17)の外方張り出し部(35)間にはアルミニウム製スペーサ(36)が配置されており、外方張り出し部(35)にろう付されている。 The outer fin (17) has a corrugated shape including a wave crest extending in the front-rear direction, a wave bottom extending in the front-rear direction, and a connecting portion connecting the wave crest and the wave bottom. The outer fin (17) is located behind the front edge of the front refrigerant flow pipe (13) and is finned to the refrigerant flow pipe (13) before and after each set (14) by the fin main body (34) And an outwardly extending portion (35) provided so as to extend forward of the front side edge of the rear refrigerant flow pipe (13) while continuing to the front side edge of the fin body portion (34). The outward projecting portion of the outer fin disposed in the gap (15) on both sides of the cold storage container (16) is arranged a gap (15) (17) (35), out of the cold storage container (16) It is brazed to the left and right side surfaces of the side projecting portion (22). An aluminum spacer (36) is disposed between the outwardly projecting portions (35) of the adjacent outer fins (17), and is brazed to the outwardly projecting portion (35).

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)の冷媒入口ヘッダ部(5)内に入り、前側の全冷媒流通管(13)を通って第１中間ヘッダ部(9)内に流入する。第１中間ヘッダ部(9)内に入った冷媒は、連通部材(12)を通って第２中間ヘッダ部(11)内に入った後、後側の全冷媒流通管(13)を通って出口ヘッダ部(6)内に流入し、冷媒出口(8)から流出する。そして、冷媒が冷媒流通管(13)内を流れる間に、間隙(15)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 ( The refrigerant enters the refrigerant inlet header part (5) of 1) and flows into the first intermediate header part (9) through the front all refrigerant circulation pipe (13). The refrigerant that has entered the first intermediate header portion (9) passes through the communication member (12), enters the second intermediate header portion (11), and then passes through the rear refrigerant flow pipe (13). It flows into the outlet header (6) and flows out from the refrigerant outlet (8). And while a refrigerant | coolant flows through the inside of a refrigerant | coolant distribution pipe (13), it heat-exchanges with the air which passes a clearance gap (15), and a refrigerant | coolant flows out into a gaseous phase.

このとき、冷媒流通管(13)内を流れる冷媒の有する冷熱によって蓄冷材容器(16)の本体部(21)内の蓄冷材が冷却され、さらに本体部(21)内の冷却された蓄冷材の有する冷熱がインナーフィン(28)を介して蓄冷材容器(16)の外方張り出し部(22)内の蓄冷材に伝えられるとともに、間隙(15)を通って冷媒により冷やされた空気の有する冷熱が外方張り出し部(22)内の蓄冷材に伝えられ、その結果蓄冷材容器(16)内全体の蓄冷材に冷熱が蓄えられる。また、冷媒流通管(13)内を流れる冷媒によって、水路(23)内において凝縮水が発生し、凝縮水に顕熱としての冷熱が蓄えられる。また、水路(23)内に発生した凝縮水は少なくとも一部が凍結し、潜熱としての冷熱が蓄えられる。 At this time, the cold storage material in the main body (21) of the cold storage material container (16) is cooled by the cold heat of the refrigerant flowing in the refrigerant flow pipe (13), and further the cooled cold storage material in the main body (21) Is transmitted to the cold storage material in the outwardly projecting portion (22) of the cold storage material container (16) through the inner fin (28), and the air cooled by the refrigerant through the gap (15) has Cold heat is transmitted to the cold storage material in the outward projecting portion (22), and as a result, cold heat is stored in the entire cold storage material in the cold storage material container (16). Further, condensed water is generated in the water channel (23) by the refrigerant flowing in the refrigerant flow pipe (13), and cold heat as sensible heat is stored in the condensed water. Further, at least part of the condensed water generated in the water channel (23) is frozen, and cold heat as latent heat is stored.

圧縮機が停止した場合には、蓄冷材容器(16)の本体部(21)および外方張り出し部(22)内の蓄冷材の有する冷熱が、インナーフィン(28)を介して本体部(21)および外方張り出し部(22)の左右両側壁に伝えられる。本体部(21)の左右両側壁に伝えられた冷熱は、冷媒流通管(13)を通過し、当該冷媒流通管(13)にろう付されているアウターフィン(17)のフィン本体部(34)を介して蓄冷材容器(16)が配置されている間隙(15)の両隣の間隙(15)を通過する空気に伝えられる。外方張り出し部(22)の左右両側壁に伝えられた冷熱は、外方張り出し部(22)の左右両側面にろう付されたアウターフィン(17)の外方張り出し部(35)を介して間隙(15)を通過する空気に放冷される。また、水路(23)を流れる凝縮水の顕熱としての冷熱や、水路(23)内において凝縮水が凍結した場合には、氷の潜熱としての冷熱および溶融した後に水路を流れる凝縮水の顕熱としての冷熱が、冷媒流通管(13)を通過し、アウターフィン(17)のフィン本体部(34)を介して蓄冷材容器(16)が配置されている間隙(15)の両隣の間隙(15)を通過する空気に伝えられる。その結果、間隙(15)を流れる空気に放冷される放冷時間を延長することができる。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 energy of the cool storage material in the main body (21) and the outwardly projecting portion (22) of the cool storage material container (16) is transferred to the main body (21 through the inner fin (28). ) And the left and right side walls of the outward projecting portion (22). The cold transmitted to the left and right side walls of the main body (21) passes through the refrigerant flow pipe (13) and is finned to the fin main body (34) of the outer fin (17) brazed to the refrigerant flow pipe (13). ) through the cold storage container (16) is transmitted to the air passing through the gap (15) on both sides of the gap (15) being arranged. The cold heat transmitted to the left and right side walls of the outward projecting part (22) passes through the outer projecting part (35) of the outer fin (17) brazed to the left and right side surfaces of the outer projecting part (22). It is allowed to cool to the air passing through the gap (15). In addition, when the condensed water flowing through the water channel (23) is cooled as sensible heat, or when the condensed water is frozen in the water channel (23), the cold water as latent heat of ice and the condensed water flowing through the water channel after melting are sensible. cold as heat, passes through the refrigerant circulation pipe (13), the gap on both sides of the gap cold storage container through the fin body of the outer fins (17) (34) (16) is arranged (15) It is transmitted to the air passing through (15). As a result, the cooling time for cooling to the air flowing through the gap (15) can be extended. 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、蓄冷材容器(16)の両面と冷媒流通管(13)の片面との間に水路(23)が設けられているが、これに限定されるものではなく、蓄冷材容器(16)の片面と冷媒流通管(13)の片面との間に水路(23)が設けられていてもよい。この場合、水路(23)が設けられていない側においては、蓄冷材容器(16)の本体部(21)は平坦面であり、冷媒流通管(13)に面接触した状態でろう付される。   In the above embodiment, the water channel (23) is provided between both surfaces of the cool storage material container (16) and one surface of the refrigerant circulation pipe (13), but the present invention is not limited to this, and the cool storage material container A water channel (23) may be provided between one side of (16) and one side of the refrigerant flow pipe (13). In this case, on the side where the water channel (23) is not provided, the main body (21) of the regenerator container (16) is a flat surface and brazed in a state of surface contact with the refrigerant flow pipe (13). .

図５はこの発明による蓄冷機能付きエバポレータの他の実施形態を示す。   FIG. 5 shows another embodiment of an evaporator with a cold storage function according to the present invention.

図５において、熱交換コア部(4)における前後２つの冷媒流通管(13)からなる各組(14)の片面、ここでは左面側に、各組(14)の２つの冷媒流通管(13)に跨るように、密閉状の内部空間(40a)内に蓄冷材（図示略）が封入されたアルミニウム製扁平状蓄冷材容器(40)が、幅方向を前後方向に向けた状態で配置されており、蓄冷材容器(40)の右面の少なくとも一部が右側の冷媒流通管(13)の左面に沿わされている。   In FIG. 5, the two refrigerant flow pipes (13) of each set (14) are arranged on one side of each set (14) consisting of two refrigerant flow pipes (13) at the front and rear in the heat exchange core (4), here on the left side. ), An aluminum flat cold storage container (40) in which a cold storage material (not shown) is enclosed in a sealed internal space (40a) is placed with the width direction facing the front-rear direction. In addition, at least a part of the right side of the cool storage material container (40) extends along the left side of the right refrigerant circulation pipe (13).

蓄冷材容器(40)は、前側冷媒流通管(13)の前側縁よりも後方に位置し、かつ各組(14)の前後の冷媒流通管(13)にろう付された本体部(42)と、本体部(42)の前側縁部に連なるとともに前側冷媒流通管(13)よりも前方に張り出すように設けられた外方張り出し部(43)とを備えており、本体部(42)の右面が右側の冷媒流通管(13)の左面に沿わされている。   The cool storage material container (40) is located behind the front edge of the front refrigerant flow pipe (13) and brazed to the refrigerant flow pipe (13) before and after each set (14). And an outward projecting portion (43) provided to extend forward from the front refrigerant flow pipe (13) and to the front edge of the main body portion (42), and the main body portion (42). The right side of the right side is along the left side of the right refrigerant circulation pipe (13).

蓄冷材容器(40)の本体部(42)における冷媒流通管(13)に沿う右面と冷媒流通管(13)との間に、蓄冷材容器(40)の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に向かって蛇行状に流す水路(23)が設けられている。図示は省略したが、水路(23)は、蓄冷材容器(40)の本体部(42)の右面に、風上側（前側）から風下側（後側）に向かって下方に傾斜した第１の水路形成用凸条(24)と、風上側から風下側に向かって上方に傾斜した第２の水路形成用凸条(25)とが、上下方向に間隔をおいて交互に形成されることによって設けられている。水路(23)および両水路形成用凸条(24)(25)の構成は、図３に示す第１の実施形態の蓄冷機能付きエバポレータ(1)と同じであり、水路(23)内で発生した凝縮水が、水路(23)を蓄冷材容器(40)の上端から下端に向かって蛇行状に流れる。   Between the right surface along the refrigerant flow pipe (13) and the refrigerant flow pipe (13) in the main body part (42) of the cold storage material container (40), and longer than the vertical length of the cold storage material container (40), and A water channel (23) is provided in which condensed water is generated and the generated condensed water flows in a meandering manner from top to bottom. Although not shown, the water channel (23) is formed on the right surface of the main body (42) of the regenerator container (40), and is inclined downward from the windward side (front side) toward the leeward side (rear side). The water channel forming ridges (24) and the second water channel forming ridges (25) inclined upward from the windward side toward the leeward side are alternately formed at intervals in the vertical direction. Is provided. The configuration of the water channel (23) and the ridges (24) and (25) for forming both water channels are the same as those of the evaporator (1) with the cold storage function of the first embodiment shown in FIG. 3, and are generated in the water channel (23). The condensed water thus flows in a meandering manner from the upper end to the lower end of the cool storage material container (40) through the water channel (23).

また、蓄冷材容器(40)の本体部(42)における冷媒流通管(13)に沿う右面に、両水路形成用凸条(24)(25)の他に、両水路形成用凸条(24)(25)よりも短くかつ風上側から風下側に向かって下方に傾斜している複数の第１短凸条(26)と、風上側から風下側に向かって上方に傾斜している複数の第２短凸条(27)とが形成されている。両短凸条(26)(27)の構成は、図３に示す第１の実施形態の蓄冷機能付きエバポレータ(1)と同じである。   Further, on the right surface along the refrigerant flow pipe (13) in the main body (42) of the cool storage material container (40), in addition to the double waterway forming ridges (24) and (25), the double waterway forming ridges (24 And a plurality of first short ridges (26) which are shorter than (25) and are inclined downward from the windward side toward the leeward side, and a plurality of first short protrusions (26) which are inclined upwardly from the windward side toward the leeward side A second short ridge (27) is formed. The configuration of both short ridges (26) and (27) is the same as the evaporator (1) with a cold storage function of the first embodiment shown in FIG.

蓄冷材容器(40)の外方張り出し部(43)は、上下方向の寸法が本体部(42)の上下方向の寸法と等しく、かつ左右方向の寸法が本体部(42)の左右方向の寸法よりも大きくなっており、本体部(42)に対して左右方向外方に膨出している。外方張り出し部(43)の左右方向の寸法は、冷媒流通管(13)の左右方向の寸法である管高さに、蓄冷材容器(40)の本体部(42)の左右方向の寸法と、凸条(24)(25)(26)(27)の突出高さを加えた高さと等しくなっている。   The outwardly projecting portion (43) of the cold storage material container (40) has the vertical dimension equal to the vertical dimension of the main body (42), and the horizontal dimension is the horizontal dimension of the main body (42). It is larger than the main body portion (42) and bulges outward in the left-right direction. The lateral dimension of the outward projecting part (43) is the same as the lateral dimension of the main body (42) of the cold storage container (40) to the pipe height that is the lateral dimension of the refrigerant flow pipe (13). It is equal to the height obtained by adding the protruding heights of the ridges (24), (25), (26), and (27).

蓄冷材容器(40)内には、本体部(42)の後端部から外方張り出し部(43)の前端部に至るアルミニウム製インナーフィン(44)が、上下方向のほぼ全体にわたって配置されている。インナーフィン(44)は、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コルゲート状である。インナーフィン(44)のフィン高さは全体に等しく、蓄冷材容器(40)の本体部(42)および外方張り出し部(43)の左側壁内面と、本体部(42)の右側壁内面とにろう付されている。   Inside the cool storage material container (40), aluminum inner fins (44) extending from the rear end of the main body (42) to the front end of the outwardly projecting portion (43) are disposed over substantially the entire vertical direction. Yes. The inner fin (44) has a corrugated shape including a wave crest extending in the front-rear direction, a wave bottom extending in the front-rear direction, and a connecting portion connecting the wave crest and the wave bottom. The fin height of the inner fin (44) is the same as the whole, and the left side wall inner surface of the main body part (42) and the outward projecting part (43) of the cold storage material container (40) and the right side wall inner surface of the main body part (42). It is brazed.

蓄冷材容器(40)内へ充填される蓄冷材としては、凝固点が５〜１０℃程度に調整されたパラフィン系潜熱蓄冷材が用いられる。具体的には、ペンタデカン、テトラデカンなどが用いられる。蓄冷材容器(40)内の蓄冷材充填率（蓄冷材容器(16)の密閉された内部空間(40a)の内容積に対する封入された蓄冷材の体積の比率）は、７０〜９０％、好ましくは７０〜８０％である。   As the cold storage material filled in the cold storage material container (40), a paraffin-based latent heat cold storage material having a freezing point adjusted to about 5 to 10 ° C is used. Specifically, pentadecane, tetradecane, or the like is used. Cool storage material filling rate in the cool storage material container (40) (ratio of the volume of the enclosed cool storage material to the internal volume of the sealed internal space (40a) of the cool storage material container (16)) is preferably 70 to 90%, preferably Is 70-80%.

蓄冷材容器(40)は、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にプレス加工が施されることにより形成され、かつ周縁部どうしが互いにろう付された２枚の略縦長方形状アルミニウム板周縁部どうしが互いにろう付された２枚の略縦長方形状アルミニウム板(45)(46)よりなる。蓄冷材容器(40)を構成する右側のアルミニウム板(45)における本体部(42)を形成する部分(47)、すなわち前側部分を除いた大部分に、両水路形成用凸条(24)(25)および両短凸条(26)(27)が形成されている。また、右側のアルミニウム板(45)における外方張り出し部(43)を形成する部分、すなわち前側部分には、右方に膨出した膨出部(48)が、上下方向の全長にわたって設けられている。   The cool storage material container (40) is formed by pressing aluminum brazing sheets having a brazing filler metal layer on both sides, and the peripheral edges of two substantially vertical rectangular aluminum plates whose peripheral portions are brazed to each other. It consists of two substantially vertical rectangular aluminum plates (45) and (46) whose parts are brazed to each other. In the right aluminum plate (45) constituting the cool storage material container (40), the portion (47) forming the main body portion (42), that is, most of the portion excluding the front side portion, both water channel forming ridges (24) ( 25) and both short ridges (26) and (27) are formed. In addition, a bulge portion (48) that bulges rightward is provided over the entire length in the vertical direction at the portion of the right aluminum plate (45) that forms the outward projection (43), i.e., the front portion. Yes.

蓄冷材容器(40)を構成する左側のアルミニウム板(46)における本体部(42)を形成する部分、すなわち前側部分を除いた大部分には、左方に膨出した第１膨出部(49)が設けられ、同じく外方張り出し部(43)を形成する部分、すなわち前側部分には、第１膨出部(49)の前側に連なるとともに右方に膨出し、かつ第１膨出部(49)と膨出高さの等しい第２膨出部(51)が、上下方向の全長にわたって設けられている。   A portion of the left aluminum plate (46) forming the cold storage material container (40) forming the main body portion (42), that is, most of the portion excluding the front side portion, has a first bulging portion bulging leftward ( 49) is provided, and the portion that also forms the outwardly projecting portion (43), that is, the front portion, is connected to the front side of the first bulging portion (49) and bulges to the right, and the first bulging portion A second bulging portion (51) having the same bulging height as (49) is provided over the entire length in the vertical direction.

そして、２枚のアルミニウム板(45)(46)を、インナーフィン(44)を間に挟んで左側アルミニウム板(46)の第１膨出部(49)の開口を、右側アルミニウム板(36)の本体部(42)を形成する部分(47)で塞ぐとともに、両アルミニウム板(45)(46)の膨出部(48)(51)の開口どうしが対向するように組み合わせ、この状態でろう付することによって蓄冷材容器(40)が形成されている。ここで、右側アルミニウム板(45)の部分(47)と左側アルミニウム板(46)の第１膨出部(49)により本体部(42)が形成され、右側アルミニウム板(46)の膨出部(48)と左側アルミニウム板(47)の第２膨出部(51)により外方張り出し部(43)が形成されている。   Then, the two aluminum plates (45), (46) are sandwiched between the inner fins (44), and the opening of the first bulging portion (49) of the left side aluminum plate (46) is opened to the right side aluminum plate (36). The part (47) that forms the main body part (42) of the aluminum plate is closed and the bulging parts (48) and (51) of the aluminum plates (45) and (46) are combined so that the openings face each other. The cold storage container (40) is formed by attaching. Here, the body portion (42) is formed by the portion (47) of the right aluminum plate (45) and the first bulging portion (49) of the left aluminum plate (46), and the bulging portion of the right aluminum plate (46). An outwardly projecting portion (43) is formed by (48) and the second bulging portion (51) of the left aluminum plate (47).

熱交換コア部(4)において、前後方向に並んだ２つの冷媒流通管(13)からなる各組(14)および各組(14)の２つの冷媒流通管(13)に跨って配置された蓄冷材容器(40)によって、複数の組み合わせ体(52)が構成されている。当該組み合わせ体(52)は左右方向に間隔をおいて配置されており、隣り合う組み合わせ体(52)どうしの間が風が通る間隙(15)となるとともに、当該間隙(15)にアルミニウム製アウターフィン(17)が配置されて冷媒流通管(13)および蓄冷材容器(40)にろう付されている。各組(14)の冷媒流通管(13)および蓄冷材容器(40)からなる組み合わせ体(52)の右側に位置するアウターフィン(17)のフィン本体部(34)は各組(14)の前後の冷媒流通管(13)にろう付され、同じく外方張り出し部(35)は蓄冷材容器(40)の外方張り出し部(43)にろう付されている。また、各組(14)の冷媒流通管(13)および蓄冷材容器(40)からなる組み合わせ体(52)の左側に位置するアウターフィン(17)のフィン本体部(34)は蓄冷材容器(40)の本体部(42)にろう付され、同じく外方張り出し部(35)は蓄冷材容器(40)の外方張り出し部(43)にろう付されている。 In the heat exchange core part (4), each pair (14) composed of two refrigerant flow pipes (13) arranged in the front-rear direction and the two refrigerant flow pipes (13) of each set (14) are arranged straddling. The cool storage material container (40) constitutes a plurality of combinations (52). The combination body (52) is arranged at intervals in the left-right direction, and a gap (15) through which wind passes between adjacent combination bodies (52) is formed, and an aluminum outer cover is formed in the gap (15). Fins (17) are arranged and brazed to the refrigerant flow pipe (13) and the cold storage material container (40). The fin body (34) of the outer fin (17) located on the right side of the combination body (52) consisting of the refrigerant flow pipe (13) and the regenerator container (40) of each pair (14) The outer projecting portion (35) is brazed to the outer projecting portion (43) of the cold storage material container (40). Further, the fin body portion (34) of the outer fin (17) located on the left side of the combination body (52) composed of the refrigerant flow pipe (13) and the cold storage material container (40) of each set (14) is a cold storage material container ( 40) is brazed to the main body portion (42), and the outwardly projecting portion (35) is also brazed to the outwardly projecting portion (43) of the cool storage material container (40).

上記２つの実施形態においては、各蓄冷材容器(16)(40)が独立しているが、これに限定されるものではなく、全蓄冷材容器(16)(40)のうち、少なくとも一部の複数の蓄冷材容器(16)(40)の内部空間(16a)(40a)どうしが、適当な連通部を介して通じさせられていてもよい。   In the above two embodiments, each cool storage material container (16) (40) is independent, but is not limited to this. At least a part of all cool storage material containers (16) (40) is used. The internal spaces (16a) and (40a) of the plurality of cool storage material containers (16) and (40) may be communicated with each other via an appropriate communication portion.

この発明による蓄冷機能付きエバポレータは、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に好適に用いられる。   The evaporator with a cold storage function according to the present invention is suitably used in a refrigeration cycle constituting a car air conditioner for 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
(13)：冷媒流通管
(15)：間隙
(16)(40)：蓄冷材容器
(16a)(40a)：内部空間
(17)：アウターフィン
(23)：水路
(24)：第１の水路形成用凸条
(25)：第２の水路形成用凸条
(26)(27)：短凸条
(52)：組み合わせ体
(1): Evaporator with cool storage function
(13): Refrigerant distribution pipe
(15): Gap
(16) (40): Cold storage container
(16a) (40a): Interior space
(17): Outer fin
(23): Waterway
(24): First ridge for water channel formation
(25): Second waterway forming ridge
(26) (27): Short ridge
(52): Combination

Claims (5)

上下方向にのびるとともに幅方向が通風方向を向いた状態で互いに間隔をおいて並列状に配置された複数の扁平状冷媒流通管と、上下方向にのびるとともに幅方向が通風方向を向き、かつ内部に蓄冷材が封入された複数の扁平状蓄冷材容器とを有し、蓄冷材容器が、少なくとも一部が冷媒流通管に沿うように配置されて冷媒流通管に熱的に接触させられ、蓄冷材容器内の蓄冷材が、冷媒流通管内を流れる冷媒の有する冷熱により冷却されるようになされている蓄冷機能付きエバポレータにおいて、
冷媒流通管と、蓄冷材容器における冷媒流通管に沿う部分との間に、蓄冷材容器の上下方向の長さよりも長く、かつ内部に凝縮水を発生させるとともに発生した凝縮水を上から下に流す水路が、蓄冷材容器の上端部から下端部にかけて設けられており、
蓄冷材容器の冷媒流通管側を向いた面に、冷媒流通管側に突出して突出端が冷媒流通管に接触するとともに風上側から風下側に向かって下方に傾斜し、かつ熱交換コア部の風上側部分から風下側部分に至る複数の第１水路形成用凸条と、冷媒流通管側に突出して突出端が冷媒流通管に接触するとともに風上側から風下側に向かって上方に傾斜し、かつ熱交換コア部の風上側部分から風下側部分に至る複数の第２水路形成用凸条とが、上下方向に間隔をおくとともに上下方向に交互に並んで設けられ、第１水路形成用凸条と第１水路形成用凸条の直下に間隔をおいて設けられた第２水路形成用凸条とからなる第１の組、および第２水路形成用凸条と第２水路形成用凸条の直下に間隔をおいて設けられた第１水路形成用凸条とからなる第２の組を有し、前記第１の組において、第１水路形成用凸条の風下側端部が、第２水路形成用凸条の風下側端部よりも風上側でかつ第２水路形成用凸条よりも上方に位置し、前記第２の組において、第２水路形成用凸条の風上側端部が、第１水路形成用凸条の風上側端部よりも風下側でかつ第１水路形成用凸条よりも上方に位置している蓄冷機能付きエバポレータ。 A plurality of flat refrigerant tubes arranged in parallel like the width direction extends vertically spaced apart from each other in a state facing the ventilating direction, the width direction extends vertically oriented ventilation direction, and internal A plurality of flat regenerator containers filled with the regenerator material, and the cool storage material container is arranged so that at least a part thereof is along the refrigerant flow pipe and is brought into thermal contact with the refrigerant flow pipe. In the evaporator with the cold storage function, the cold storage material in the material container is cooled by the cold heat of the refrigerant flowing in the refrigerant flow pipe.
Between the refrigerant circulation pipe and the portion along the refrigerant circulation pipe in the cold storage material container, the length of the cold storage material container is longer than the vertical direction, and the condensed water generated is generated from the top to the bottom. A flowing water channel is provided from the upper end to the lower end of the cool storage material container ,
The surface of the cold storage material container facing the refrigerant flow pipe side protrudes toward the refrigerant flow pipe side, the protruding end contacts the refrigerant flow pipe and is inclined downward from the windward side toward the leeward side, and the heat exchange core part A plurality of first water channel forming ridges extending from the windward side part to the leeward side part, projecting toward the refrigerant flow pipe side and projecting ends contacting the refrigerant flow pipe and inclined upward from the windward side toward the leeward side; A plurality of second water channel forming ridges extending from the windward side portion to the leeward side portion of the heat exchange core portion are provided in the vertical direction and alternately arranged in the vertical direction. A first pair of second water channel forming ridges and a second water channel forming ridge that are provided immediately below the first water channel forming ridges, and a second water channel forming ridge. A second set of first waterway forming ridges provided at an interval directly below In the first set, the leeward side end of the first waterway forming ridge is on the leeward side than the leeward side end of the second waterway forming ridge and more than the second waterway forming ridge. In the second set, the leeward end of the second waterway forming ridge is leeward than the windward end of the first waterway forming ridge and is the first waterway forming convex in the second set. Evaporator with cool storage function located above the strip. 隣り合う冷媒流通管どうしの間に間隙が形成されるとともに、蓄冷材容器の数が間隙の数よりも少なくなされ、全間隙のうち一部の複数の間隙に蓄冷材容器が配置されるとともに、蓄冷材容器の両面が両側の冷媒流通管の片面に沿わされ、蓄冷材容器の両面のうち少なくとも片面と冷媒流通管の片面との間に水路が形成され、残りの間隙にフィンが配置されている請求項１記載の蓄冷機能付きエバポレータ。 With a gap is formed between the refrigerant tubes each other adjacent, with the number of the cold storage container is made smaller than the number of gaps, cold storage container to a plurality of the gap portion of the total gap is arranged, Both sides of the cold storage material container are along one side of the refrigerant flow pipes on both sides, a water channel is formed between at least one side of the cold storage material container and one side of the refrigerant flow pipe, and fins are arranged in the remaining gap. The evaporator with a cool storage function according to claim 1. 各冷媒流通管の片面側のみに蓄冷材容器が配置されるとともに蓄冷材容器の片面が冷媒流通管の片面に沿わされ、蓄冷材容器の片面と冷媒流通管の片面との間に水路が形成され、冷媒流通管および蓄冷材容器からなる組み合わせ体が、冷媒流通管の幅方向と直角をなす方向に間隔をおいて配置され、隣り合う組み合わせ体どうしの間が風が通る間隙とされ、当該間隙にフィンが配置されている請求項１記載の蓄冷機能付きエバポレータ。 A regenerator container is disposed only on one side of each refrigerant distribution pipe, and one side of the regenerator container is provided along one side of the refrigerant distribution pipe, and a water channel is formed between one side of the regenerator container and one side of the refrigerant distribution pipe. is a combination body consisting of containers refrigerant tubes and regenerator material is disposed at intervals in a direction forming a width direction perpendicular to the refrigerant flow pipe, is a gap between the combined body each other adjacent passes the wind, the The evaporator with a cool storage function according to claim 1, wherein fins are arranged in the gap . 蓄冷材容器における冷媒流通管側を向いた面に、両水路形成用凸条よりも短くかつ風上側から風下側に向かって上方および／または下方に傾斜しているとともに、突出端が冷媒流通管に接触する複数の短凸条が間隔をおいて設けられている請求項１〜３のうちのいずれかに記載の蓄冷機能付きエバポレータ。 The surface of the cold storage material container facing the refrigerant flow pipe side is shorter than the two water channel forming ridges and is inclined upward and / or downward from the windward side toward the leeward side, and the protruding end is the refrigerant flow pipe. The evaporator with a cool storage function according to any one of claims 1 to 3, wherein a plurality of short ridges in contact with each other are provided at intervals . すべての蓄冷材容器のうち少なくとも一部の複数の蓄冷材容器の内部空間どうしが連通部を介して通じさせられている請求項１〜４のうちのいずれかに記載の蓄冷機能付きエバポレータ。 The evaporator with a cool storage function according to any one of claims 1 to 4, wherein internal spaces of at least some of the cool storage material containers among all the cool storage material containers are communicated with each other through a communication portion .
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