JP5624761B2 - Evaporator with cool storage function - Google Patents

Evaporator with cool storage function Download PDF

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JP5624761B2
JP5624761B2 JP2009294043A JP2009294043A JP5624761B2 JP 5624761 B2 JP5624761 B2 JP 5624761B2 JP 2009294043 A JP2009294043 A JP 2009294043A JP 2009294043 A JP2009294043 A JP 2009294043A JP 5624761 B2 JP5624761 B2 JP 5624761B2
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storage material
cold storage
container
brazed
material container
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JP2011133182A5 (en
JP2011133182A (en
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広仲 佐々木
広仲 佐々木
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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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/32Cooling devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates

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  • Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
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  • General Engineering & Computer Science (AREA)

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および図2の上下を上下というものとする。   In this specification and the claims, the top and bottom of FIGS. 1 and 2 are the top and bottom.

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.

ところで、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。   By the way, in a normal car air conditioner, when the engine is stopped, the compressor using the engine as a driving source stops, so 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利用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 a problem, the evaporator is provided with a cold storage function, and when the engine stops and the compressor stops, the interior of the vehicle can be cooled using the cold energy stored in the evaporator. It is considered.

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を通風方向に向け、かつ通風方向に間隔をおいて配置された複数の扁平状冷媒流通管からなる組が、冷媒流通管の幅方向と直角をなす方向に間隔をおいて複数配置され、複数の冷媒流通管からなる組の片面側に、上下方向にのびるとともに幅方向を通風方向に向け、かつ内部に蓄冷材が封入された扁平状蓄冷材容器が、通風方向に隣り合う冷媒流通管に跨るように配置されて冷媒流通管にろう付され、通風方向に並んだ冷媒流通管からなる組および当該組の冷媒流通管にろう付された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通風間隙とされ、通風間隙にフィンが配置されて冷媒流通管および蓄冷材容器にろう付されているものが提案されている(特許文献1参照)。   As an evaporator with a cold storage function, a set consisting of a plurality of flat refrigerant flow pipes extending in the vertical direction and extending in the width direction in the ventilation direction and spaced in the ventilation direction is perpendicular to the width direction of the refrigerant flow pipe A flat regenerator in which a plurality of refrigerant circulation pipes are arranged at intervals in a direction extending in the vertical direction and in the width direction in the direction of ventilation, and in which a regenerator material is enclosed. The material container is disposed so as to straddle the refrigerant flow pipes adjacent to each other in the ventilation direction, brazed to the refrigerant flow pipes, and brazed to the set of refrigerant flow pipes arranged in the ventilation direction and the refrigerant flow pipes of the set. A combination body composed of cold storage material containers is arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, a ventilation gap is formed between adjacent combination bodies, and fins are arranged in the ventilation gap to cool the combination body. What is brazed to the flow pipe and the cold storage container it has been proposed (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おいては、冷媒流通管の片面と蓄冷材容器の外面とが面接触させられてろう付されているが、この場合、冷媒流通管の片面と蓄冷材容器の外面との間に、両者が全面にわたって完全にろう付されないことにより生じる隙間が散在するおそれがある。そして、圧縮機が作動して車室内を冷媒流通管内を流れる冷媒の働きにより冷却する際に、発生した凝縮水が上記隙間内に侵入し、当該隙間内での凝縮水の滞留および当該凝縮水の凍結と、凝縮水の解凍とを繰り返し、その結果上記隙間が徐々に大きくなって、やがて蓄冷材容器全体が冷媒流通管から剥がれるおそれがある。また、上記隙間に凝縮水が滞留することにより、冷媒流通管および蓄冷材容器が腐食するおそれがある。   In the evaporator with a cool storage function described in Patent Document 1, one side of the refrigerant flow tube and the outer surface of the cool storage material container are brought into surface contact and brazed, but in this case, one side of the coolant flow tube and the cool storage material container There may be a gap between the outer surface and the outer surface due to the fact that they are not completely brazed over the entire surface. When the compressor is actuated to cool the passenger compartment by the action of the refrigerant flowing in the refrigerant flow pipe, the generated condensed water enters the gap, and the condensed water stays in the gap and the condensed water Freezing and thawing of condensed water are repeated, and as a result, the gap gradually increases, and the entire cool storage material container may be peeled off from the refrigerant circulation pipe. In addition, the condensed water stays in the gap, which may cause corrosion of the refrigerant flow pipe and the cold storage material container.

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、蓄冷材容器全体の冷媒流通管からの剥がれを長期間にわたって防止しうるとともに、冷媒流通管および蓄冷材容器の腐食を防止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 solves the above-mentioned problems and can prevent the entire cold storage material container from peeling off from the refrigerant circulation pipe for a long period of time and can prevent corrosion of the refrigerant circulation pipe and the cold storage material container. It is to provide.

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複数の扁平状冷媒流通管が、冷媒流通管の幅方向と直角をなす方向に間隔をおいて複数配置され、冷媒流通管の片面側に、上下方向にのびるとともに幅方向を通風方向に向け、かつ内部に蓄冷材が封入された扁平状蓄冷材容器が配置されて冷媒流通管にろう付された蓄冷機能付きエバポレータであって、
蓄冷材容器の片面側に冷媒流通管が配置されて蓄冷材容器にろう付されるとともに、蓄冷材容器の他面側にフィンが配置されて蓄冷材容器にろう付されており、冷媒流通管と冷媒流通管にろう付された蓄冷材容器との間に、上下方向にのびかつ下端が下方に開口した複数の排水用凹溝が、通風方向に間隔をおいて形成され、蓄冷材容器が、冷媒流通管にろう付された容器本体部と、容器本体部の通風方向の風上側縁部または風下側縁部に連なるとともに冷媒流通管よりも通風方向外側に突出するように設けられ、かつ厚み方向の寸法が容器本体部の厚み方向の寸法よりも大きくなった内容積増大部とを備え、蓄冷材容器の排水用凹溝が、蓄冷材容器の容器本体部における冷媒流通管にろう付された面に、容器本体部の壁を内方に変形させることによって形成され、蓄冷材容器内に、容器本体部から内容積増大部に至る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。
1) A plurality of flat refrigerant flow pipes extending in the vertical direction and having a width direction facing the ventilation direction are arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, and one side of the refrigerant flow pipe In addition, an evaporator with a cold storage function, in which a flat cold storage material container that extends in the vertical direction and faces the width direction in the ventilation direction and in which the cold storage material is enclosed is brazed to the refrigerant flow pipe,
The refrigerant distribution pipe is arranged on one side of the cold storage material container and brazed to the cold storage material container, and the fin is arranged on the other side of the cold storage material container and brazed to the cold storage material container. and between the brazed the cold storage container to the refrigerant circulation pipe, a plurality of drainage grooves that extend in the vertical direction and the lower end is opened downward is formed at intervals in the draft direction, the cold storage container A container main body brazed to the refrigerant flow pipe, and a winder side edge or a leeward side edge of the container main body part in the ventilation direction, and is provided so as to protrude outward in the ventilation direction from the refrigerant flow pipe, and And an internal volume increasing portion whose dimension in the thickness direction is larger than the dimension in the thickness direction of the container body, and the drainage groove of the cool storage material container is brazed to the refrigerant flow pipe in the container body of the cool storage material container. The inner wall of the container body is Formed by the cold storage material container, with a cool storage function evaporator inner fin is disposed extending from the container body in the internal volume increasing portion.

2)通風方向に並んだ冷媒流通管および当該冷媒流通管にろう付された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通風間隙とされ、通風間隙にフィンが配置されて冷媒流通管および蓄冷材容器にろう付され、フィンにおける通風方向の両側部分のうちの内容積増大部が設けられた側の部分が、冷媒流通管よりも通風方向外側に突出させられ、蓄冷材容器の内容積増大部の両面にフィンがろう付されている上記1)記載の蓄冷機能付きエバポレータ。 2) A combination of a refrigerant circulation pipe arranged in the ventilation direction and a cold storage material container brazed to the refrigerant circulation pipe is arranged adjacent to each other at intervals in a direction perpendicular to the width direction of the refrigerant circulation pipe. The side between the combined bodies is a ventilation gap, fins are arranged in the ventilation gap, brazed to the refrigerant flow pipe and the cold storage material container, and the inner volume increasing portion of the both sides of the fin in the ventilation direction is provided. The evaporator with a cold storage function according to the above 1) , wherein the portion is protruded outward in the ventilation direction from the refrigerant circulation pipe, and fins are brazed to both surfaces of the internal volume increasing portion of the cold storage material container.

3)蓄冷材容器の内部どうしが内容積増大部において連通させられている上記1)または2)記載の蓄冷機能付きエバポレータ。 3) The evaporator with a cool storage function according to 1) or 2), wherein the interiors of the cool storage material containers are communicated with each other in the internal volume increasing portion.

上記1)〜3)の蓄冷機能付きエバポレータによれば、冷媒流通管と冷媒流通管にろう付された蓄冷材容器との間に、上下方向にのびかつ下端が下方に開口した複数の排水用凹溝が、通風方向に間隔をおいて形成されているので、冷媒流通管の片面と蓄冷材容器の外面との間に隙間が散在していたとしても、当該隙間に侵入した凝縮水は、排水用凹溝内に入って当該排水用凹溝内を下方に流れ、蓄冷材容器の下方に流れ落ちる。したがって、冷媒流通管の片面と蓄冷材容器の外面との間に、両者が全面にわたって完全にろう付されないことにより生じる隙間内への凝縮水の滞留が抑制されるとともに、当該隙間内に凝縮水が滞留することに起因する凝縮水の凍結が抑制され、蓄冷材容器全体の冷媒流通管からの剥がれを長期間にわたって防止することができる。また、冷媒流通管の片面と蓄冷材容器の外面との間に散在する隙間内への凝縮水の滞留が抑制されるので、冷媒流通管および蓄冷材容器の腐食を防止することができる。 According to the evaporator with a cold storage function of the above 1) to 3) , a plurality of drainage pipes extending in the vertical direction and having a lower end opened downward between the refrigerant circulation pipe and the cold storage material container brazed to the refrigerant circulation pipe. Since the concave grooves are formed at intervals in the ventilation direction , even if a gap is scattered between one side of the refrigerant flow pipe and the outer surface of the cold storage material container, the condensed water that has entered the gap is It enters the drainage ditch and flows downward in the drainage ditch, and then flows down to the cool storage material container. Therefore, the condensate is prevented from staying in the gap between the one surface of the refrigerant flow pipe and the outer surface of the cool storage material container, and the condensate is not completely brazed over the entire surface. Freezing of condensed water resulting from the retention of water can be suppressed, and peeling of the entire cool storage material container from the refrigerant circulation pipe can be prevented over a long period of time. In addition, since the condensate stays in the gaps scattered between one side of the refrigerant flow tube and the outer surface of the cold storage material container, corrosion of the refrigerant flow tube and the cold storage material container can be prevented.

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ろう付された面に、排水用凹溝を比較的簡単に形成することができる。 According to the evaporator with a cool storage function of 1) above, the drain groove can be formed relatively easily on the surface brazed to the refrigerant flow pipe in the cool storage material container.

上記1)の蓄冷機能付きエバポレータによれば、蓄冷材容器が、冷媒流通管にろう付された容器本体部と、容器本体部の通風方向の風上側縁部または風下側縁部に連なるとともに冷媒流通管よりも通風方向外側に突出するように設けられ、かつ厚み方向の寸法が容器本体部の厚み方向の寸法よりも大きくなった内容積増大部とを備えているので、蓄冷材容器の容器高さが全体に同一の場合に比べて、蓄冷材容器および冷媒流通管の長さを長くしたり、蓄冷材容器の厚み方向の寸法である容器高さを全体に高くしたりすることなく、蓄冷材容器に封入される蓄冷材の量を多くすることができる。したがって、蓄冷機能付きエバポレータの小型軽量化を図ることができる。しかも、内容積増大部を設けることに起因する通風間隙の面積の減少を抑制することができ、熱交換コア部の寸法を変えない場合であっても、通気抵抗の上昇を抑制することができる。 According to the evaporator with a cold storage function of 1) above, the cold storage material container is connected to the container main body part brazed to the refrigerant flow pipe, and the windward side edge or the leeward side edge part in the ventilation direction of the container main body part and the refrigerant. The container of the regenerator container is provided with an inner volume increasing portion provided so as to protrude outward in the ventilation direction from the circulation pipe and having a dimension in the thickness direction larger than a dimension in the thickness direction of the container main body. Compared to the case where the height is the same as the whole, without increasing the length of the cold storage material container and the refrigerant distribution pipe, or without increasing the overall container height that is the dimension in the thickness direction of the cold storage material container, The quantity of the cool storage material enclosed with the cool storage material container can be increased. Therefore, the evaporator with a cold storage function can be reduced in size and weight. Moreover, it is possible to suppress a decrease in the area of the ventilation gap due to the provision of the internal volume increasing portion, and it is possible to suppress an increase in ventilation resistance even when the dimensions of the heat exchange core portion are not changed. .

また、通風方向に並んだ複数の冷媒流通管および当該冷媒流通管にろう付された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通風間隙とされ、通風間隙にフィンが配置されて冷媒流通管および蓄冷材容器にろう付され、フィンにおける通風方向の両側部分のうちの内容積増大部が設けられた側の部分が、冷媒流通管よりも通風方向外側に突出させられ、蓄冷材容器の内容積増大部の両面にフィンがろう付されているので、エンジンが停止して圧縮機が停止した際に、蓄冷材容器の内容積増大部内の蓄冷材の有する冷熱が、内容積増大部の両側面から内容積増大部の両側面にろう付されているフィンを介して通風間隙を通過する空気に伝えられるので、放冷性能が向上する。   Further, a combination body composed of a plurality of refrigerant flow tubes arranged in the ventilation direction and a cold storage material container brazed to the refrigerant flow tubes is arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow tubes, Between the adjacent combinations is a ventilation gap, fins are arranged in the ventilation gap and brazed to the refrigerant circulation pipe and the cold storage material container, and an internal volume increasing portion is provided in both sides of the fin in the ventilation direction. When the engine stops and the compressor stops, the part on the other side protrudes outward in the ventilation direction from the refrigerant flow pipe and the fins are brazed to both sides of the internal volume increasing part of the cold storage material container. In addition, the cold heat of the regenerator material in the inner volume increasing portion of the cool storage material container is converted into the air passing through the ventilation gap via fins brazed from both side surfaces of the inner volume increasing portion to both side surfaces of the inner volume increasing portion. Because you can tell Cooling performance is improved.

特に、内容積増大部が容器本体部の風下側に設けられている場合には、通風間隙を流れてくる空気の温度が低くなっている部分に、多くの蓄冷材が入れられている内容積増大部が存在することになるので、蓄冷材を効率良く冷却することができ、蓄冷性能が向上する。   In particular, when the internal volume increasing part is provided on the leeward side of the container body part, the internal volume in which a large amount of cold storage material is placed in the part where the temperature of the air flowing through the ventilation gap is low Since an increase part will exist, a cool storage material can be cooled efficiently and cold storage performance improves.

上記3)の蓄冷機能付きエバポレータによれば、いずれか1つの蓄冷材容器の内容積増大部に蓄冷材充填口を形成するとともに、いずれか1つの蓄冷材容器の内容積増大部に空気抜き口を形成しておくことにより、内部どうしが連通させられている蓄冷材容器内への蓄冷材の封入作業が簡単になる。 According to the evaporator with the cold storage function of 3) above, the cold storage material filling port is formed in the internal volume increasing portion of any one of the cold storage material containers, and the air vent port is provided in the internal volume increasing portion of any one of the cold storage material containers. By forming, it becomes easy to enclose the regenerator material in the regenerator container in which the interiors communicate with each other.

この発明の実施形態1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 according to Embodiment 1 of the present invention. 図1の一部を省略したA−A線拡大断面図である。It is the AA line expanded sectional view which abbreviate | omitted a part of FIG. 図2のB−B線拡大断面図である。FIG. 3 is an enlarged sectional view taken along line B-B in FIG. 2. 図2のC−C線拡大断面図である。FIG. 3 is an enlarged sectional view taken along the line CC in FIG. 2. 一体化された複数の蓄冷材容器を示す斜視図である。It is a perspective view which shows the some cool storage material container integrated. 1つ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 one cool storage material container.

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〜図4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 to 4) 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.

また、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。   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6はその要部の構成を示す。   FIG. 1 shows the overall structure of an evaporator with a cold storage function according to the present invention, and FIGS.

図1および図2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 and FIG. 2, the 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 a heat exchange core portion (4) provided between the header 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)の右端部に跨ってろう付され、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 brazed across the right end portions of the intermediate header portions (9) and (11). And it is made to communicate through the communicating member (12) whose inside became a passage.

図1〜図4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を前後方向に向け、かつ前後方向に間隔をおいて配置された複数、ここでは2つのアルミニウム押出形材製扁平状冷媒流通管(13)からなる組(14)が、左右方向(冷媒流通管(13)の幅方向と直角をなす方向)に間隔をおいて複数配置されており、2つの冷媒流通管(13)からなる組(14)の片面、ここでは左側面側に、上下方向にのびるとともに幅方向を前後方向に向け、かつ内部に蓄冷材(図示略)が封入されたアルミニウム製扁平状蓄冷材容器(15)が、各組(14)の2つの冷媒流通管(13)に跨るように配置されて冷媒流通管(13)にろう付されている。   As shown in FIGS. 1 to 4, the heat exchange core portion (4) has a plurality of, in this case, two, extending in the vertical direction and oriented in the width direction in the front-rear direction and spaced in the front-rear direction. A plurality of sets (14) of flat refrigerant flow pipes (13) made of extruded aluminum material are arranged at intervals in the left-right direction (direction perpendicular to the width direction of the refrigerant flow pipe (13)), One side of the set (14) consisting of two refrigerant flow pipes (13), in this case the left side, extends in the vertical direction and the width direction in the front-rear direction, and a regenerator (not shown) is enclosed inside. An aluminum flat cold storage container (15) is disposed so as to straddle the two refrigerant flow pipes (13) of each set (14) and brazed to the refrigerant flow pipe (13).

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。そして、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)に跨ってろう付された蓄冷材容器(15)によって、複数の組み合わせ体(16)が構成されるとともに、当該組み合わせ体(16)が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(16)どうしの間が通風間隙(17)となり、当該通風間隙(17)にアルミニウム製コルゲートフィン(18)が配置されて冷媒流通管(13)および蓄冷材容器(15)にろう付されている。各組(14)の冷媒流通管(13)および各組(14)の冷媒流通管(13)にろう付された蓄冷材容器(15)からなる組み合わせ体(16)の左右両端に位置するものの外側にもアルミニウム製コルゲート状アウターフィン(18)が配置されており、右端のアウターフィン(18)は前後両冷媒流通管(13)に跨ってろう付され、左端のアウターフィン(18)は蓄冷材容器(15)にろう付されている。なお、アウターフィン(18)は、波頂部、波底部および波頂部と波底部とを連結する連結部とよりなるコルゲート状であり、波頂部および波底部を前後方向に向けて配置されている。左右両端のアウターフィン(18)の外側にはアルミニウム製サイドプレート(19)が配置されてアウターフィン(18)にろう付されており、サイドプレート(19)と左右両端の組み合わせ体(16)との間にも通風間隙(17)が設けられている。   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). Then, each set (14) composed of two refrigerant flow pipes (13) arranged in the front-rear direction and the cold storage material container (15) brazed across the two refrigerant flow pipes (13) of each set (14) A plurality of combinations (16) are configured by the above, and the combinations (16) are arranged at intervals in the left-right direction, and between the adjacent combinations (16), the ventilation gap (17) Thus, an aluminum corrugated fin (18) is disposed in the ventilation gap (17) and brazed to the refrigerant flow pipe (13) and the cold storage material container (15). Although located at the left and right ends of the combination body (16) composed of the refrigerant storage pipe (13) brazed to the refrigerant circulation pipe (13) of each group (14) and the refrigerant circulation pipe (13) of each group (14) An aluminum corrugated outer fin (18) is also arranged on the outside, the right end outer fin (18) is brazed across both the front and rear refrigerant flow pipes (13), and the left end outer fin (18) is cold storage It is brazed to the material container (15). The outer fin (18) has a corrugated shape including a wave crest part, a wave bottom part, and a connecting part that connects the wave crest part and the wave bottom part, and the wave crest part and the wave bottom part are arranged in the front-rear direction. Aluminum side plates (19) are placed outside the outer fins (18) at the left and right ends and brazed to the outer fins (18), and the combination of the side plate (19) and the left and right ends (16) A ventilation gap (17) is also provided between the two.

図2〜図5に示すように、蓄冷材容器(15)は、冷媒入口ヘッダ部(5)および第1中間ヘッダ部(9)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)にろう付された容器本体部(21)と、容器本体部(21)の前側縁に連なるとともに冷媒入口ヘッダ部(5)および第1中間ヘッダ部(9)の前側縁よりも前方に突出するように設けられ、かつ厚み方向(左右方向)の寸法が容器本体部(21)の厚み方向(左右方向)の寸法よりも高くなった内容積増大部(22)とよりなる。容器本体部(21)の左右方向の寸法は全体に等しくなっている。内容積増大部(22)の左右方向の寸法は、冷媒流通管(13)の厚み方向(左右方向)の寸法である管高さに、蓄冷材容器(15)の容器本体部(21)の厚み方向の寸法を加えた高さと等しくなっている。内容積増大部(22)は、容器本体部(21)対して右方のみに膨出しており、容器本体部(21)および内容積増大部(22)の左側面は面一である。   As shown in FIGS. 2 to 5, the regenerator container (15) is located behind the front side edges of the refrigerant inlet header (5) and the first intermediate header (9), and each set (14). The container main body part (21) brazed to the refrigerant flow pipes (13) before and after the pipe, the front edge of the container main body part (21), the refrigerant inlet header part (5), and the first intermediate header part (9) The inner volume increasing portion (22) is provided so as to protrude forward from the front edge of the container, and the dimension in the thickness direction (left and right direction) is higher than the dimension in the thickness direction (left and right direction) of the container body (21). ). The dimensions in the left-right direction of the container body (21) are the same as the whole. The dimension of the inner volume increasing part (22) in the left-right direction is equal to the pipe height which is the dimension in the thickness direction (left-right direction) of the refrigerant flow pipe (13), and the container main body part (21) of the regenerator container (15). It is equal to the height with the dimension in the thickness direction added. The inner volume increasing portion (22) bulges only to the right with respect to the container main body portion (21), and the left side surfaces of the container main body portion (21) and the inner volume increasing portion (22) are flush with each other.

蓄冷材容器(15)内には、容器本体部(21)の後側縁部から内容積増大部(22)の前端部に至るアルミニウム製インナーフィン(23)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(23)は、波頂部、波底部および波頂部と波底部とを連結する連結部とよりなるコルゲート状であり、波頂部および波底部を前後方向に向けて配置されている。インナーフィン(23)のフィン高さは全体に等しく、蓄冷材容器(15)の容器本体部(21)および内容積増大部(22)の左側壁内面と、容器本体部(21)の右側壁内面とにろう付されている。   Inside the cool storage material container (15), aluminum inner fins (23) extending from the rear edge of the container body (21) to the front end of the internal volume increasing part (22) are arranged over substantially the entire vertical direction. Has been. The inner fin (23) has a corrugated shape including a wave crest part, a wave bottom part, and a connecting part that connects the wave crest part and the wave bottom part, and the wave crest part and the wave bottom part are arranged in the front-rear direction. The fin height of the inner fin (23) is the same as the whole, the inner surface of the left side wall of the container body (21) and the inner volume increasing part (22) of the cold storage material container (15), and the right side wall of the container body (21) It is brazed to the inner surface.

蓄冷材容器(15)の容器本体部(21)における前後の冷媒流通管(13)にろう付された面、ここでは右側面には、上下方向にのびかつ下端が蓄冷材容器(15)の下方に開口した複数の排水用凹溝(24)が、蓄冷材容器(15)における冷媒流通管(13)にろう付された壁を内方に変形させることによって、前後方向に間隔をおいて形成されている。排水用凹溝(24)は、蓄冷材容器(15)の上端近傍から下端近傍までのびている。なお、排水用凹溝(24)は、各組(14)の前後の冷媒流通管(13)間の隙間にも形成されている。   The surface of the cool storage material container (15) brazed to the front and rear refrigerant flow pipes (13), in this case, the right side surface, extends vertically and has a lower end extending from the cool storage material container (15). A plurality of drain grooves (24) opened downward are spaced in the front-rear direction by deforming inwardly the wall brazed to the refrigerant flow pipe (13) in the cold storage container (15). Is formed. The drainage ditch (24) extends from the vicinity of the upper end of the cold storage material container (15) to the vicinity of the lower end. The drainage ditch (24) is also formed in the gap between the refrigerant flow pipes (13) before and after each set (14).

蓄冷材容器(15)の内容積増大部(22)の上下両端部は、容器本体部(21)よりも上下方向外側に突出しており、当該突出部に、左右方向外方に膨出した膨出状タンク形成部(25)が設けられている。隣り合う蓄冷材容器(15)の内容積増大部(22)のタンク形成部(25)どうしは相互にろう付されており、これによりすべての蓄冷材容器(15)が一体化されている。また、隣り合う蓄冷材容器(15)の内容積増大部(22)のタンク形成部(25)内どうしは、タンク形成部(25)の膨出端壁に形成された連通穴(26)を介して通じさせられている。そして、すべての蓄冷材容器(15)の内容積増大部(22)の上下のタンク形成部(25)によって上下両連通タンク(27)が形成されており、すべての蓄冷材容器(15)の内部が上下両連通タンク(27)において通じさせられている。図示は省略したが、上下両連通タンク(27)のうちのいずれか一方に蓄冷材充填口が形成されるとともに、同他方に空気抜き口が形成されており、蓄冷材充填口を通して全蓄冷材容器(15)内に蓄冷材が充填されるようになっている。このとき、蓄冷材は、まず蓄冷材容器(15)の内容積増大部(22)内に入り、インナーフィン(23)の隣り合う連結部間を通って、容器本体部(21)内に入る。蓄冷材充填口および空気抜き口は、蓄冷材容器(15)内への蓄冷材の充填後に適当な手段により塞がれている。蓄冷材容器(15)内へ充填される蓄冷材としては、たとえば水系、パラフィン系などの凝固点が3〜10℃程度に調整されたものが用いられる。また、蓄冷材容器(15)内への蓄冷材の充填量は、全蓄冷材容器(15)内を上端部まで満たすような量とするのがよい。   The upper and lower end portions of the internal volume increasing portion (22) of the cold storage material container (15) protrude outward in the vertical direction from the container main body portion (21), and the protruding portion bulges outward in the left-right direction. A protruding tank forming part (25) is provided. The tank forming portions (25) of the inner volume increasing portions (22) of the adjacent cool storage material containers (15) are brazed to each other, thereby integrating all the cool storage material containers (15). Further, the inside of the tank forming portion (25) of the inner volume increasing portion (22) of the adjacent cool storage material container (15) has a communication hole (26) formed in the bulging end wall of the tank forming portion (25). Is communicated through. Then, upper and lower communication tanks (27) are formed by the upper and lower tank forming portions (25) of the inner volume increasing portions (22) of all the cool storage material containers (15), and all the cool storage material containers (15) The inside communicates with the upper and lower communication tanks (27). Although not shown, a regenerator filling port is formed in one of the upper and lower communication tanks (27), and an air vent is formed in the other, and all the regenerator containers are formed through the regenerator filling port. (15) The cold storage material is filled inside. At this time, the regenerator material first enters the internal volume increasing portion (22) of the regenerator material container (15), passes between adjacent connecting portions of the inner fin (23), and enters the container main body portion (21). . The cool storage material filling port and the air vent port are closed by appropriate means after the cool storage material container (15) is filled with the cool storage material. As the cold storage material filled in the cold storage material container (15), for example, a water-based, paraffin-based or the like whose freezing point is adjusted to about 3 to 10 ° C is used. Further, the amount of the regenerator material filled in the regenerator material container (15) is preferably an amount that fills the entire regenerator material container (15) up to the upper end.

図6に示すように、蓄冷材容器(15)は、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(28)(29)よりなる。すべてのアルミニウム板(28)(29)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からなり、左右両方から見た外形は同一となっている。蓄冷材容器(15)を構成する左側のアルミニウム板(28)は、前側部分を除いた大部分を占めるとともに、左方に膨出した容器本体部(21)形成用の第1膨出部(31)と、第1膨出部(31)の前側に連なるとともに左方に膨出し、かつ第1膨出部(31)と膨出高さの等しい内容積増大部(22)形成用の第2膨出部(32)と、第2膨出部(32)の上下両端部に設けられて左方に膨出し、かつ第2膨出部(32)よりも膨出高さの高いタンク形成部(25)形成用の第3膨出部(33)とを備えている。左端の蓄冷材容器(15)を除いた蓄冷材容器(15)を構成する左側アルミニウム板(28)における第3膨出部(33)の膨出端壁に連通穴(26)が形成されている。   As shown in FIG. 6, the cool storage material container (15) is composed of two substantially vertical rectangular aluminum plates (28) and (29) whose peripheral portions are brazed to each other. All the aluminum plates (28) and (29) are made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and the outer shapes viewed from both the left and right sides are the same. The left aluminum plate (28) constituting the cool storage material container (15) occupies most of the portion excluding the front side portion, and forms a first bulge portion for forming the container body portion (21) bulged to the left ( 31) and an inner volume increasing portion (22) for forming the inner volume increasing portion (22) which is connected to the front side of the first bulging portion (31) and bulges to the left and has the same bulging height as the first bulging portion (31). Two bulges (32) and tanks provided at both upper and lower ends of the second bulge (32) and bulging to the left and having a higher bulge than the second bulge (32) And a third bulging portion (33) for forming the portion (25). A communication hole (26) is formed in the bulging end wall of the third bulging portion (33) in the left aluminum plate (28) constituting the cold storage material container (15) excluding the leftmost cold storage material container (15). Yes.

蓄冷材容器(15)を構成する右側のアルミニウム板(29)は、前側部分を除いた大部分を占める容器本体部(21)形成用の平坦部(34)と、平坦部(34)の前側に連なるとともに右方に膨出した内容積増大部(22)形成用の第1膨出部(35)と、第1膨出部(35)の上下両端部に設けられて右方に膨出し、かつ第1膨出部(35)よりも膨出高さの高いタンク形成部(25)形成用の第2膨出部(36)とを備えている。蓄冷材容器(15)を構成する右側アルミニウム板(29)の平坦部(34)における左側アルミニウム板(28)とのろう付部を除いた部分に、当該平坦部(34)を変形させることによって上下方向にのびる複数の凸条(37)が前後方向に間隔をおいて複数形成されている。そして、凸条(37)の突出端部が冷媒流通管(13)にろう付され、前後方向に隣り合う凸条(37)間に排水用凹溝(24)が形成されている。右端の蓄冷材容器(15)を除いた蓄冷材容器(15)を構成する右側アルミニウム板(29)における第2膨出部(36)の膨出端壁に連通穴(26)が形成されている。そして、2枚のアルミニウム板(28)(29)を、膨出部(32)(35)および(33)(36)の開口どうしが対向するとともに、平坦部(34)によって第1膨出部(31)の開口を閉鎖するように組み合わせてろう付することにより、蓄冷材容器(15)が形成されている。隣接する2つの蓄冷材容器(15)のタンク形成部(25)どうしは、第3膨出部(33)と第2膨出部(36)の連通穴(26)どうしが通じるように相互にろう付されている。   The right aluminum plate (29) constituting the regenerator container (15) includes a flat part (34) for forming the container body part (21) occupying most of the front part excluding the front part, and the front side of the flat part (34). And a first bulging portion (35) for forming an internal volume increasing portion (22) that bulges to the right and bulges to the right by being provided at both upper and lower ends of the first bulging portion (35). And a second bulging portion (36) for forming a tank forming portion (25) having a bulging height higher than that of the first bulging portion (35). By deforming the flat portion (34) into a portion of the flat portion (34) of the right aluminum plate (29) constituting the cold storage material container (15) excluding the brazed portion with the left aluminum plate (28). A plurality of ridges (37) extending in the vertical direction are formed at intervals in the front-rear direction. The projecting end of the ridge (37) is brazed to the refrigerant flow pipe (13), and a drain groove (24) is formed between the ridges (37) adjacent in the front-rear direction. A communication hole (26) is formed in the bulging end wall of the second bulging portion (36) in the right aluminum plate (29) constituting the cold storage material container (15) excluding the rightmost cold storage material container (15). Yes. The two aluminum plates (28) and (29) are arranged so that the openings of the bulging portions (32) (35) and (33) (36) face each other, and the first bulging portion is formed by the flat portion (34). The cold storage material container (15) is formed by brazing so that the opening of (31) is closed. The tank forming parts (25) of two adjacent cool storage material containers (15) are mutually connected so that the communication holes (26) of the third bulging part (33) and the second bulging part (36) communicate with each other. It is brazed.

アウターフィン(18)の前側部分は、前側の冷媒流通管(13)よりも前方に突出させられており、アウターフィン(18)における前側の冷媒流通管(13)よりも前方に突出した部分が、左右両側に位置する蓄冷材容器(15)の内容積増大部(22)の左右両側面にろう付されている。   The front side portion of the outer fin (18) protrudes forward from the front refrigerant flow tube (13), and the outer fin (18) has a portion protruding forward from the front refrigerant flow tube (13). The left and right side surfaces of the internal volume increasing portion (22) of the cool storage material container (15) located on both the left and right sides are brazed.

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)とともにフロン系冷媒を使用する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、通風間隙(17)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 that uses a chlorofluorocarbon refrigerant together with a decompressor) is mounted on a vehicle, for example, an automobile, that temporarily stops an engine that is a driving source of a compressor when the vehicle is stopped as a car air conditioner. 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 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). Then, while the refrigerant flows through the refrigerant flow pipe (13), heat exchange is performed with the air passing through the ventilation gap (17), and the refrigerant flows out as a gas phase.

このとき、冷媒流通管(13)内を流れる冷媒によって蓄冷材容器(15)の容器本体部(21)内の蓄冷材が冷却されるとともに、容器本体部(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(23)を介して蓄冷材容器(15)の内容積増大部(22)内の蓄冷材に伝えられ、さらに通風間隙(17)を通って冷媒により冷やされた空気によって蓄冷材容器(15)の内容積増大部(22)内の蓄冷材が冷却され、その結果蓄冷材容器(15)内全体の蓄冷材に冷熱が蓄えられる。   At this time, the cold storage material in the container main body (21) of the cold storage container (15) is cooled by the refrigerant flowing in the refrigerant flow pipe (13), and the cooled cold storage material in the container main body (21) Is transmitted to the regenerator material in the internal volume increasing portion (22) of the regenerator material container (15) through the inner fin (23), and further by the air cooled by the refrigerant through the ventilation gap (17). The cold storage material in the internal volume increasing portion (22) of the cold storage material container (15) is cooled, and as a result, cold heat is stored in the entire cold storage material in the cold storage material container (15).

また、圧縮機が作動している場合には、大気中の水分が凝縮して凝縮水が発生する。ここで、冷媒流通管(13)の片面と蓄冷材容器(15)の外面との間に、両者が全面にわたって完全にろう付されないことにより生じる隙間が散在していたとしても、当該隙間に侵入した凝縮水は、排水用凹溝(24)内に入るとともに、排水用凹溝(24)内を下方に流れ、蓄冷材容器(15)の下方に流れ落ちる。したがって、冷媒流通管(13)の片面と蓄冷材容器(15)の外面との間に生じた隙間内への凝縮水の滞留が抑制されるとともに、当該隙間内に凝縮水が滞留することに起因する凝縮水の凍結が抑制され、蓄冷材容器(15)全体の冷媒流通管(13)からの剥がれを長期間にわたって防止することができる。また、冷媒流通管(13)の片面と蓄冷材容器(15)の外面との間に散在する隙間内への凝縮水の滞留が抑制されるので、冷媒流通管(13)および蓄冷材容器(15)の腐食を防止することができる。   Further, when the compressor is operating, moisture in the atmosphere is condensed and condensed water is generated. Here, even if there is a gap between one side of the refrigerant flow pipe (13) and the outer surface of the cold storage material container (15) that is not completely brazed over the entire surface, it enters the gap. The condensed water enters the drainage ditch (24), flows downward in the drainage ditch (24), and flows down to the cool storage material container (15). Accordingly, the condensate water stays in the gap formed between one side of the refrigerant flow pipe (13) and the outer surface of the cool storage material container (15), and the condensate water stays in the gap. Freezing of the condensed water due to this is suppressed, and peeling of the entire cool storage material container (15) from the refrigerant circulation pipe (13) can be prevented over a long period of time. In addition, since the condensate water stays in the gaps scattered between one side of the refrigerant flow pipe (13) and the outer surface of the cold storage material container (15), the refrigerant flow pipe (13) and the cold storage material container ( 15) Corrosion can be prevented.

圧縮機が停止した場合には、蓄冷材容器(15)の容器本体部(21)および内容積増大部(22)内の蓄冷材の有する冷熱が、インナーフィン(23)を介して容器本体部(21)および内容積増大部(22)の左側壁に伝えられ、さらに蓄冷材容器(15)の左側面にろう付されているコルゲートフィン(18)を介して通風間隙(17)を通過する空気に伝えられる。また、蓄冷材容器(15)の容器本体部(21)内の蓄冷材の有する冷熱が、インナーフィン(23)を介して容器本体部(21)の右側壁に伝えられるとともに、容器本体部(21)の右側面から冷媒流通管(13)および当該冷媒流通管(13)にろう付されているコルゲートフィン(18)を介して通風間隙(17)を通過する空気に伝えられる。さらに、蓄冷材容器(15)の内容積増大部(22)内の蓄冷材の有する冷熱は、内容積増大部(22)の右側面から内容積増大部(22)の右側面にろう付されているコルゲートフィン(18)を介して通風間隙(17)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 of the cold storage material in the container main body (21) and the internal volume increasing portion (22) of the cold storage material container (15) is transferred to the container main body through the inner fin (23). (21) and the internal volume increasing portion (22) are transmitted to the left side wall, and further pass through the ventilation gap (17) through the corrugated fin (18) brazed to the left side surface of the cold storage material container (15). It is transmitted to the air. In addition, the cold heat of the cool storage material in the container body (21) of the cool storage material container (15) is transmitted to the right side wall of the container body (21) via the inner fin (23), and the container body ( 21) is transmitted to the air passing through the ventilation gap (17) through the refrigerant flow pipe (13) and the corrugated fin (18) brazed to the refrigerant flow pipe (13). Furthermore, the cold heat of the regenerator material in the inner volume increasing part (22) of the cooler material container (15) is brazed from the right side surface of the inner volume increasing part (22) to the right side surface of the inner volume increasing part (22). It is transmitted to the air passing through the ventilation gap (17) through the corrugated fin (18). 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、蓄冷機能付きエバポレータの冷媒流通管は、所謂積層型エバポレータの場合と同様に、2枚のアルミニウム板を対向させて周縁部どうしをろう付することにより形成された扁平中空体に設けられていてもよい。すなわち、扁平中空体を構成する両アルミニウム板間に膨出状に形成されたものであってもよい。また、上記実施形態において、排水用凹溝は蓄冷材容器に形成されているが、これに限定されるものではなく、冷媒流通管に形成されたり、蓄冷材容器および冷媒流通管の両者に形成されたりしてもよい。   In the above embodiment, the refrigerant flow pipe of the evaporator with a cold storage function is formed in a flat hollow body formed by brazing the peripheral portions with two aluminum plates facing each other, as in the case of a so-called laminated evaporator. It may be provided. That is, it may be formed in a bulging shape between both aluminum plates constituting the flat hollow body. Moreover, in the said embodiment, although the ditch | groove for drainage is formed in the cool storage material container, it is not limited to this, It forms in a refrigerant | coolant distribution pipe, or it forms in both a cold storage material container and a refrigerant | coolant distribution pipe. It may be done.

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
(14):前後の冷媒流通管からなる組
(15):蓄冷材容器
(16):各組の冷媒流通管と蓄冷材容器との組み合わせ体
(17):通風間隙
(18):アウターフィン
(21):容器本体部
(22):内容積増大部
(24):排水用凹溝
(1): Evaporator with cool storage function
(13): Refrigerant distribution pipe
(14): A set consisting of front and rear refrigerant flow pipes
(15): Cold storage container
(16): Combination of each set of refrigerant flow pipe and cool storage container
(17): Ventilation gap
(18): Outer fin
(21): Container body
(22): Internal volume increasing part
(24): Drain for drainage

Claims (3)

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複数配置され、冷媒流通管の片面側に、上下方向にのびるとともに幅方向を通風方向に向け、かつ内部に蓄冷材が封入された扁平状蓄冷材容器が配置されて冷媒流通管にろう付された蓄冷機能付きエバポレータであって、
蓄冷材容器の片面側に冷媒流通管が配置されて蓄冷材容器にろう付されるとともに、蓄冷材容器の他面側にフィンが配置されて蓄冷材容器にろう付されており、冷媒流通管と冷媒流通管にろう付された蓄冷材容器との間に、上下方向にのびかつ下端が下方に開口した複数の排水用凹溝が、通風方向に間隔をおいて形成され、蓄冷材容器が、冷媒流通管にろう付された容器本体部と、容器本体部の通風方向の風上側縁部または風下側縁部に連なるとともに冷媒流通管よりも通風方向外側に突出するように設けられ、かつ厚み方向の寸法が容器本体部の厚み方向の寸法よりも大きくなった内容積増大部とを備え、蓄冷材容器の排水用凹溝が、蓄冷材容器の容器本体部における冷媒流通管にろう付された面に、容器本体部の壁を内方に変形させることによって形成され、蓄冷材容器内に、容器本体部から内容積増大部に至る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。
A plurality of flat refrigerant flow pipes extending in the vertical direction and having a width direction facing the ventilation direction are arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, on one side of the refrigerant flow pipe, An evaporator with a cold storage function that extends in the vertical direction and faces the width direction in the ventilation direction, and a flat cold storage material container in which the cold storage material is sealed is disposed and brazed to the refrigerant flow pipe,
The refrigerant distribution pipe is arranged on one side of the cold storage material container and brazed to the cold storage material container, and the fin is arranged on the other side of the cold storage material container and brazed to the cold storage material container. and between the brazed the cold storage container to the refrigerant circulation pipe, a plurality of drainage grooves that extend in the vertical direction and the lower end is opened downward is formed at intervals in the draft direction, the cold storage container A container main body brazed to the refrigerant flow pipe, and a winder side edge or a leeward side edge of the container main body part in the ventilation direction, and is provided so as to protrude outward in the ventilation direction from the refrigerant flow pipe, and And an internal volume increasing portion whose dimension in the thickness direction is larger than the dimension in the thickness direction of the container body, and the drainage groove of the cool storage material container is brazed to the refrigerant flow pipe in the container body of the cool storage material container. The inner wall of the container body is Formed by the cold storage material container, with a cool storage function evaporator inner fin is disposed extending from the container body in the internal volume increasing portion.
通風方向に並んだ冷媒流通管および当該冷媒流通管にろう付された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通風間隙とされ、通風間隙にフィンが配置されて冷媒流通管および蓄冷材容器にろう付され、フィンにおける通風方向の両側部分のうちの内容積増大部が設けられた側の部分が、冷媒流通管よりも通風方向外側に突出させられ、蓄冷材容器の内容積増大部の両面にフィンがろう付されている請求項1記載の蓄冷機能付きエバポレータ。 A combination of refrigerant circulation pipes arranged in the ventilation direction and a cold storage material container brazed to the refrigerant circulation pipe are arranged at intervals in a direction perpendicular to the width direction of the refrigerant circulation pipe, and are adjacent to each other. The space between the two is a ventilation gap, fins are arranged in the ventilation gap and brazed to the refrigerant flow pipe and the cold storage material container, and the portion of the fin on the side where the internal volume increasing portion is provided in both sides in the ventilation direction The evaporator with a cool storage function according to claim 1, wherein the evaporator protrudes outward in the ventilation direction from the refrigerant circulation pipe, and fins are brazed to both surfaces of the internal volume increasing portion of the cool storage material container . 蓄冷材容器の内部どうしが内容積増大部において連通させられている請求項1または2記載の蓄冷機能付きエバポレータ。 The evaporator with a cool storage function according to claim 1 or 2, wherein the interiors of the cool storage material containers are communicated with each other in the internal volume increasing portion .
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