JP5574700B2 - Evaporator with cool storage function - Google Patents
Evaporator with cool storage function Download PDFInfo
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- JP5574700B2 JP5574700B2 JP2009293849A JP2009293849A JP5574700B2 JP 5574700 B2 JP5574700 B2 JP 5574700B2 JP 2009293849 A JP2009293849 A JP 2009293849A JP 2009293849 A JP2009293849 A JP 2009293849A JP 5574700 B2 JP5574700 B2 JP 5574700B2
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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.
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た蓄冷機能付きエバポレータであって、
蓄冷材容器における冷媒流通管にろう付された面に、下方に向かって風下側または風上側に傾斜させられ、かつ傾斜下端部が複数の冷媒流通管からなる組における通風方向に隣り合う２つの冷媒流通管間の隙間に開口した複数の排水用凹溝が形成されており、
蓄冷材容器における通風方向に隣り合う２つの冷媒流通管にろう付されたろう付部分の風上側部分に、下方に向かって風下側に傾斜した複数の排水用凹溝が上下方向に間隔をおいて形成され、同じく上記ろう付部分の風下側部分に、下方に向かって風上側に傾斜した複数の排水用凹溝が上下方向に間隔をおいて形成され、蓄冷材容器の上記ろう付部分の風上側部分に形成された排水用凹溝の傾斜下端部と、同じく風下側部分に形成された排水用凹溝の傾斜下端部との高さ位置が異なっている蓄冷機能付きエバポレータ。
1) A set of a plurality of flat refrigerant flow tubes extending in the vertical direction and facing the width direction in the ventilation direction and spaced apart in the ventilation direction is in a direction perpendicular to the width direction of the refrigerant flow tube. A flat regenerator container in which a plurality of refrigerant distribution pipes are arranged at intervals and extends in the up-down direction on the one side of the set consisting of a plurality of refrigerant flow pipes and directed in the width direction in the ventilation direction, and in which the regenerator material is enclosed, An evaporator with a cold storage function disposed so as to straddle the refrigerant flow pipe adjacent in the ventilation direction and brazed to the refrigerant flow pipe,
Two surfaces that are brazed to the refrigerant flow pipe in the cool storage material container are inclined leeward or upwind toward the lower side, and the lower end of the inclination is adjacent to the ventilation direction in a set of a plurality of refrigerant flow pipes. A plurality of drain grooves are formed in the gap between the refrigerant flow pipes .
In the cool storage material container, a plurality of concave grooves for drainage inclined downward on the leeward side at the upper side of the brazed portion brazed to two refrigerant flow pipes adjacent to each other in the direction of ventilation in the cold storage material container are vertically spaced. A plurality of drainage concave grooves formed on the leeward side of the brazing part and inclined downward on the windward side are formed at intervals in the vertical direction, and the wind of the brazing part of the cold storage material container is formed. The evaporator with a cool storage function in which the height positions of the inclined lower end portion of the drainage ditch formed in the upper portion and the inclined lower end portion of the drainage ditch formed in the leeward portion are different.
2)蓄冷材容器の排水用凹溝が、蓄冷材容器における冷媒流通管にろう付された壁を内方に変形させることによって形成されている上記1)記載の蓄冷機能付きエバポレータ。 2) The evaporator with a cool storage function according to the above 1) , wherein the concave groove for drainage of the cool storage material container is formed by inwardly deforming a wall brazed to the refrigerant flow pipe in the cool storage material container.
3)冷媒流通管および蓄冷材容器が別個に形成されており、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おり、通風方向に並んだ複数の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、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)または2)記載の蓄冷機能付きエバポレータ。 3) The refrigerant circulation pipe and the cold storage material container are formed separately, and the cold storage material container is brazed to the refrigerant flow pipe, and the windward edge or the leeward edge of the container main body in the ventilation direction. And an internal volume increasing portion having a dimension in the thickness direction that is larger than a dimension in the thickness direction of the container main body portion. A combination of a plurality of refrigerant flow pipes arranged in the direction and a combination of cold storage containers brazed to the refrigerant flow pipes of the set are arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe Between the adjacent combinations 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 internal volume increasing portion of both side portions of the fin in the ventilation direction is Provided Above 1) or 2) an evaporator with a cool storage function according portions, than the refrigerant circulation pipe is protruded in the air outwardly, the fins are brazed on both sides of the internal volume increasing portion of the cold storage container.
4)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3)記載の蓄冷機能付きエバポレータ。 4) The evaporator with a cool storage function according to 3) above, wherein the interiors of the cool storage material containers are communicated with each other in the internal volume increasing portion.
上記1)〜4)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、下方に向かって風下側または風上側に傾斜させられ、かつ傾斜下端部が複数の冷媒流通管からなる組における通風方向に隣り合う２つの冷媒流通管間の隙間に開口した複数の排水用凹溝が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、通風方向に隣り合う２つの冷媒流通管間の隙間を通って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 4) , between the refrigerant flow pipe and the cold storage material container brazed to the refrigerant flow pipe, it is inclined downward or leeward toward the leeward side, and Since a plurality of drain grooves are formed in the gap between two refrigerant flow pipes adjacent to each other in the ventilation direction in a set of a plurality of refrigerant flow pipes whose inclined lower ends are formed, one side of the refrigerant flow pipe and the cold storage material Even if a gap is scattered between the outer surface of the container, the condensed water that has entered the gap enters the drainage ditch, flows downward in the drainage ditch, and is adjacent to the
上記1)の蓄冷機能付きエバポレータによれば、排水用凹溝を冷媒流通管に形成する場合の冷媒の流通抵抗の増大を防止することができる。 According to the evaporator with a cold storage function of 1) above, it is possible to prevent an increase in refrigerant flow resistance when the drainage concave groove is formed in the refrigerant flow pipe.
上記2)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 cold storage function of 2) above, the drain groove can be formed relatively easily on the surface brazed to the refrigerant flow pipe in the cold storage material container.
上記3)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 the cold storage function of 3) above, the cold storage material container is connected to the container main body portion brazed to the refrigerant circulation pipe, and the windward side edge or the leeward side edge portion of the container main body portion in the ventilation direction 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、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。 In addition, a combination of a plurality of refrigerant flow tubes arranged in the ventilation direction and a combination of cool storage containers brazed to the refrigerant flow tubes of the set are spaced apart in a direction perpendicular to the width direction of the refrigerant flow tubes. Between the adjacent combinations, a fin is arranged in the ventilation gap and brazed to the refrigerant flow pipe and the cold storage material container, and the inner volume of the fins on both sides in the ventilation direction The portion on the side where the increasing portion is provided protrudes outward in the ventilation direction from the refrigerant flow pipe, and fins are brazed on both sides of the inner volume increasing portion of the cold storage material container, so the engine stops and compresses When the machine is stopped, the cold heat of the cold storage material in the internal volume increasing portion of the cold storage material container is passed through the fins brazed from both side surfaces of the internal volume increasing portion to both side surfaces of the internal volume increasing portion. Through the air Since Erareru, to improve cooling performance.
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4)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 a cool storage function of 4) above, a regenerator filling port is formed in the inner volume increasing portion of any one of the cool storage material containers, and an air vent is provided in the inner volume increasing portion of any one of the cool 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.
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い、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 referred to as the front, the opposite side is referred to as the rear, and the left and right when viewed from the front, that is, the left and right in FIG. It shall be left and right.
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)), Aluminum flat shape with one side of the set (14) consisting of two refrigerant flow pipes (13), here left side, extending in the vertical direction and facing in the width direction in the front-rear direction and enclosing the regenerator The cool storage material container (15) is disposed so as to straddle the two refrigerant flow pipes (13) of each group (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フィン(18)が配置されており、右端のコルゲートフィン(18)は前後両冷媒流通管(13)に跨ってろう付され、左端のコルゲートフィン(18)は蓄冷材容器(15)にろう付されている。左右両端のコルゲートフィン(18)の外側にはアルミニウム製サイドプレート(19)が配置されてコルゲートフィン(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 fin (18) is also arranged on the outside, the right end corrugated fin (18) is brazed across both the front and rear refrigerant flow pipes (13), and the left end corrugated fin (18) is a cold storage container (15) is brazed. Aluminum side plates (19) are placed outside the corrugated fins (18) at the left and right ends and brazed to the corrugated 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 them.
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(20)と、容器本体部(20)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(20)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(21)とよりなる。容器本体部(20)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(21)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(20)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(21)は、容器本体部(20)対して右方のみに膨出しており、容器本体部(20)および内容積増大部(21)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 (20) brazed to the refrigerant flow pipes (13) before and after, and the refrigerant inlet header part (5) and the first intermediate header part (9) connected to the front side edge of the container main body part (20). The inner volume increasing part (21 which is provided so as to protrude forward from the front edge of the container and whose thickness direction (left and right direction) is higher than the thickness direction (left and right direction) of the container body (20) (21 ). The dimensions in the left-right direction of the container body (20) are the same as the whole. The dimension of the inner volume increasing portion (21) 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 (20) of the regenerator container (15). It is equal to the height with the dimension in the thickness direction added. The inner volume increasing portion (21) bulges only to the right with respect to the container main body portion (20), and the left side surfaces of the container main body portion (20) and the inner volume increasing portion (21) are flush with each other.
蓄冷材容器(15)の容器本体部(20)における冷媒流通管(13)にろう付された面、ここでは右側面には、下方に向かって前後いずれか一方に傾斜させられ、かつ傾斜下端部が複数の冷媒流通管(13)からなる組(14)における前後に隣り合う冷媒流通管(13)間の隙間(14A)に開口した複数の排水用凹溝(22)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形成されている。すなわち、蓄冷材容器(15)における前後方向に隣り合う２つの冷媒流通管(13)にろう付されたろう付部分の後側部分（風上側部分）に、下方に向かって前方（風下側）に傾斜するとともに、傾斜下端部が２つの冷媒流通管(13)からなる組(14)における前後に隣り合う冷媒流通管(13)間の隙間(14A)に臨んだ複数の排水用凹溝(22)が上下方向に間隔をおいて形成され、同じく上記ろう付部分の前側部分（風下側部分）に、下方に向かって後側（風上側）に傾斜するとともに、傾斜下端部が２つの冷媒流通管(13)からなる組(14)における前後に隣り合う冷媒流通管(13)間の隙間(14A)に臨んだ複数の排水用凹溝(22)が上下方向に間隔をおいて形成されている。 The surface brazed to the refrigerant flow pipe (13) in the container main body (20) of the cold storage material container (15), here the right side surface, is inclined to either one of the front and rear in the downward direction, and the inclined lower end A plurality of drain grooves (22) opened in the gap (14A) between the refrigerant flow pipes (13) adjacent in the front and rear in the set (14) consisting of a plurality of refrigerant flow pipes (13) are provided in the cold storage container It is formed by deforming inwardly the wall brazed to the refrigerant flow pipe (13) in (15). That is, on the rear part (windward part) of the brazed part brazed to two refrigerant flow pipes (13) adjacent in the front-rear direction in the cold storage material container (15), forward (downward) downward A plurality of drain grooves (22) that are inclined and face the gap (14A) between the refrigerant flow pipes (13) adjacent to each other in the front and rear in the set (14) including two refrigerant flow pipes (13). ) Are formed at intervals in the vertical direction, and are inclined to the front portion (leeward side portion) of the brazed portion and rearward (windward side) toward the lower side, and the lower end portion of the slant has two refrigerant circulations. A plurality of drain grooves (22) facing the gap (14A) between the refrigerant flow pipes (13) adjacent to each other in the front and rear of the group (14) consisting of the pipes (13) are formed at intervals in the vertical direction. Yes.
蓄冷材容器(15)の内容積増大部(21)の上下両端部は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(23)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(21)のタンク形成部(23)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(21)のタンク形成部(23)内どうしは、タンク形成部(23)の膨出端壁に形成された連通穴(24)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(21)の上下のタンク形成部(23)によって上下両連通タンク(25)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(25)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(25)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。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 inner volume increasing portion (21) of the cold storage material container (15) protrude outward in the vertical direction, and the protruding tank forming portion (23) bulging outward in the left-right direction is formed in the protruding portion. Is provided. The tank forming portions (23) of the inner volume increasing portions (21) of the adjacent cool storage material containers (15) are brazed to each other, so that all the cool storage material containers (15) are integrated. Further, the inside of the tank forming portion (23) of the inner volume increasing portion (21) of the adjacent cool storage material container (15) has a communication hole (24) formed in the bulging end wall of the tank forming portion (23). Is communicated through. The upper and lower communication tanks (25) are formed by the upper and lower tank forming portions (23) of the inner volume increasing portion (21) 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 (25). Although not shown in the drawings, a regenerator filling port is formed in one of the upper and lower communication tanks (25), 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. 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(26)(27)よりなる。すべてのアルミニウム板(26)(27)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(26)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(20)形成用の第１膨出部(28)と、第１膨出部(28)の前側に連なるとともに左方に膨出し、かつ第１膨出部(28)と膨出高さの等しい内容積増大部(21)形成用の第２膨出部(29)と、第２膨出部(29)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(29)よりも膨出高さの高いタンク形成部(23)形成用の第３膨出部(31)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(26)における第３膨出部(31)の膨出端壁に連通穴(24)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 (26), (27) in which peripheral portions are brazed to each other. All the aluminum plates (26) and (27) 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 are the same. The left aluminum plate (26) constituting the cool storage material container (15) occupies most of the portion excluding the front side portion, and the first bulge portion for forming the container body portion (20) bulging to the left ( 28) and a first bulge for forming an internal volume increasing portion (21) connected to the front side of the first bulging portion (28) and bulging to the left and having the same bulging height as the first bulging portion (28). Two bulges (29) and a tank formed at the upper and lower ends of the second bulge (29) and bulging to the left and having a higher bulge than the second bulge (29) And a third bulging portion (31) for forming the portion (23). A communication hole (24) is formed in the bulging end wall of the third bulging portion (31) in the left aluminum plate (26) 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(27)は、前側部分を除いた大部分を占める容器本体部(20)形成用の平坦部(32)と、平坦部(32)の前側に連なるとともに右方に膨出した内容積増大部(21)形成用の第１膨出部(33)と、第１膨出部(33)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(33)よりも膨出高さの高いタンク形成部(23)形成用の第２膨出部(34)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(27)の平坦部(32)の右側面に、当該平坦部(32)を変形させることによって排水用凹溝(22)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(27)における第２膨出部(34)の膨出端壁に連通穴(24)が形成されている。そして、２枚のアルミニウム板(26)(27)を、膨出部(29)(33)および(31)(34)の開口どうしが対向するとともに平坦部(32)により第１膨出部(28)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(23)どうしは、第３膨出部(31)と第２膨出部(34)の連通穴(24)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 (27) constituting the cold storage material container (15) includes a flat part (32) for forming the container main body part (20) that occupies most of the front part, and the front side of the flat part (32). And a first bulging portion (33) for forming an inner volume increasing portion (21) that bulges to the right and the upper and lower ends of the first bulging portion (33) and bulges to the right. And a second bulging portion (34) for forming a tank forming portion (23) having a bulging height higher than that of the first bulging portion (33). On the right side surface of the flat portion (32) of the right aluminum plate (27) constituting the cold storage material container (15), a drain groove (22) is formed by deforming the flat portion (32). A communication hole (24) is formed in the bulging end wall of the second bulging portion (34) in the right aluminum plate (27) constituting the cold storage material container (15) excluding the rightmost cold storage material container (15). Yes. The two aluminum plates (26), (27) are arranged so that the openings of the bulging portions (29), (33) and (31), (34) face each other, and the first bulging portion ( The cold storage material container (15) is formed by brazing so that the opening of 28) is closed. The tank forming portions (23) of two adjacent cool storage material containers (15) are mutually connected so that the communication holes (24) of the third bulging portion (31) and the second bulging portion (34) communicate with each other. It is brazed.
コルゲートフィン(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、コルゲートフィン(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(21)の左右両側面にろう付されている。 The front side portion of the corrugated fin (18) protrudes forward from the front refrigerant flow pipe (13), and the portion of the corrugated fin (18) that protrudes forward from the front refrigerant flow pipe (13) The left and right side surfaces of the internal volume increasing portion (21) of the cold 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、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 ( 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). 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(20)内の蓄冷材が冷却されるとともに、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(21)内の蓄冷材が冷却され、その結果蓄冷材に冷熱が蓄えられる。 At this time, the cool storage material in the container body (20) of the cool storage material container (15) was cooled by the coolant flowing in the coolant circulation pipe (13), and was cooled by the coolant through the ventilation gap (17). The cool storage material in the internal volume increasing portion (21) of the cool storage material container (15) is cooled by the air, and as a result, cold heat is stored in the cool storage material.
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(22)内に入るとともに、排水用凹溝(22)内を下方に流れ、各組(14)の前後に隣り合う冷媒流通管(13)間の隙間(14A)を通って下方に流れ落ちる。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 (22), flows downward in the drainage ditch (22), and the gap between the refrigerant circulation pipes (13) adjacent to each other before and after each set (14) ( Flows down through 14A). 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(20)内の蓄冷材の有する冷熱が、容器本体部(20)の左側面から蓄冷材容器(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とともに、容器本体部(20)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。また、蓄冷材容器(15)の内容積増大部(21)内の蓄冷材の有する冷熱は、内容積増大部(21)の左右両側面から内容積増大部(21)の左右両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 stops, the cold heat of the regenerator material in the container body (20) of the regenerator container (15) is transferred from the left side of the container body (20) to the left side of the regenerator container (15). It is transmitted to the air passing through the ventilation gap (17) via the corrugated fin (18) brazed to the refrigerant flow pipe (13) and the refrigerant flow pipe ( It is transmitted to the air passing through the ventilation gap (17) through the corrugated fin (18) brazed to 13). Also, the cold heat of the regenerator material in the inner volume increasing portion (21) of the cool storage material container (15) will be transferred from the left and right side surfaces of the inner volume increasing portion (21) to the left and right side surfaces of the inner volume increasing portion (21). The air is transmitted to the air passing through the ventilation gap (17) through the attached 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
(14A)：前後の冷媒流通管間の隙間
(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)：コルゲートフィン
(20)：容器本体部
(21)：内容積増大部
(22)：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
(14A): Gap between the front and rear refrigerant flow pipes
(15): Cold storage container
(16): Combination of each set of refrigerant distribution pipe and cool storage container
(17): Ventilation gap
(18): Corrugated fin
(20): Container body
(21): Internal volume increasing part
(22): Drain for drainage
Claims (4)
蓄冷材容器における冷媒流通管にろう付された面に、下方に向かって風下側または風上側に傾斜させられ、かつ傾斜下端部が複数の冷媒流通管からなる組における通風方向に隣り合う２つの冷媒流通管間の隙間に開口した複数の排水用凹溝が形成されており、
蓄冷材容器における通風方向に隣り合う２つの冷媒流通管にろう付されたろう付部分の風上側部分に、下方に向かって風下側に傾斜した複数の排水用凹溝が上下方向に間隔をおいて形成され、同じく上記ろう付部分の風下側部分に、下方に向かって風上側に傾斜した複数の排水用凹溝が上下方向に間隔をおいて形成され、蓄冷材容器の上記ろう付部分の風上側部分に形成された排水用凹溝の傾斜下端部と、同じく風下側部分に形成された排水用凹溝の傾斜下端部との高さ位置が異なっている蓄冷機能付きエバポレータ。 A set of a plurality of flat refrigerant flow pipes extending in the vertical direction and facing the width direction in the ventilation direction and spaced apart in the ventilation direction is spaced in a direction perpendicular to the width direction of the refrigerant flow pipe. A flat regenerator container with a plurality of refrigerant flow pipes arranged in the vertical direction and extending in the vertical direction and in the width direction in the ventilation direction and enclosing the regenerator material in the ventilation direction An evaporator with a cold storage function disposed so as to straddle the refrigerant circulation pipe adjacent to the refrigerant circulation pipe,
Two surfaces that are brazed to the refrigerant flow pipe in the cool storage material container are inclined leeward or upwind toward the lower side, and the lower end of the inclination is adjacent to the ventilation direction in a set of a plurality of refrigerant flow pipes. A plurality of drain grooves are formed in the gap between the refrigerant flow pipes .
In the cool storage material container, a plurality of concave grooves for drainage inclined downward on the leeward side at the upper side of the brazed portion brazed to two refrigerant flow pipes adjacent to each other in the direction of ventilation in the cold storage material container are vertically spaced. A plurality of drainage concave grooves formed on the leeward side of the brazing part and inclined downward on the windward side are formed at intervals in the vertical direction, and the wind of the brazing part of the cold storage material container is formed. The evaporator with a cool storage function in which the height positions of the inclined lower end portion of the drainage ditch formed in the upper portion and the inclined lower end portion of the drainage ditch formed in the leeward portion are different .
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| JP5772748B2 (en) | 2012-07-23 | 2015-09-02 | 株式会社デンソー | Evaporator |
| JP5862507B2 (en) | 2012-08-07 | 2016-02-16 | 株式会社デンソー | Cold storage heat exchanger |
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| JPH09292196A (en) * | 1996-03-01 | 1997-11-11 | Denso Corp | Cold heat regenerating type chilling unit |
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| DE10156944A1 (en) * | 2001-01-05 | 2002-07-11 | Behr Gmbh & Co | Air conditioning system for motor vehicle with compressor arranged in refrigeration circuit and evaporator of air to be conditioned for the interior of the vehicle |
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