JP2021134926A

JP2021134926A - Laminate-type heat exchanger

Info

Publication number: JP2021134926A
Application number: JP2020028452A
Authority: JP
Inventors: 直哉瀬戸丸; Naoya Setomaru
Original assignee: T Rad Co Ltd
Current assignee: T Rad Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-09-13
Anticipated expiration: 2040-02-21
Also published as: JP7456795B2

Abstract

To provide a laminate-type heat exchanger which facilitates a positioning structure of a partitioning plate of a heat exchanger in which two cores are separated by the partitioning plate in a laminate direction, and oblivion in assembling the partitioning plate can be detected from outside.SOLUTION: The present invention includes: a first core 2a composed of a laminate of a flat tube 1; a second core 2b; a partitioning plate 3 provided parallel with a planar part 1a of the flat tube 1 by separating between the two cores 2a, 2b in a laminate direction of the flat tube 1; and a casing 4 fitted to a whole outer periphery of the two cores 2a, 2b with the partitioning plate 3 positioned at center. A locking hook 3d is formed on an outer peripheral edge of the partitioning plate 3 so as to project toward an outer surface of the casing 4, and on the casing 4, an engagement part 4e is formed which engages with the locking hook 3d of the partitioning plate 3. In a state where the locking hook 3d of the partitioning plate 3 being engaged with the engagement part 4e of the casing 4, the tip of the locking hook 3d is projected from an outer surface of the casing 4.SELECTED DRAWING: Figure 2

Description

本発明は、自動車の内燃機関等に用いられる積層型熱交換器に最適なものに関し、特に、仕切板によって２つのコアを積層方向に分離した積層型熱交換器の組立て性の向上に関する。 The present invention relates to the most suitable for a laminated heat exchanger used in an internal combustion engine of an automobile, and more particularly to an improvement in assembling property of a laminated heat exchanger in which two cores are separated in a stacking direction by a partition plate.

下記特許文献１および特許文献２に記載の熱交換器は、偏平チューブの積層体からなるコアを有し、そのコア全体をカバーで被嵌したものである。各偏平チューブ内にガスが流通するガス流路が形成され、カバーと各偏平チューブの外面との間に冷媒流路が形成され、ガスと冷媒との間に熱交換を行うものである。
特許文献１、特許文献２に記載された熱交換器は、ガスのみがＵ字状タンクで反転され、ガス流路が２パスに形成される。一方、冷媒流路はＵターンすることなく、１パスに流通する。
冷媒流路が１パスの場合、冷媒の出入口となる一対のパイプが離間して配置されることになり、一対のパイプを近接して配置する必要がある場合、その要望に対応できない欠点がある。 The heat exchangers described in Patent Documents 1 and 2 below have a core made of a laminated body of flat tubes, and the entire core is covered with a cover. A gas flow path through which gas flows is formed in each flat tube, a refrigerant flow path is formed between the cover and the outer surface of each flat tube, and heat exchange is performed between the gas and the refrigerant.
In the heat exchangers described in Patent Document 1 and Patent Document 2, only the gas is inverted in the U-shaped tank, and the gas flow path is formed in two paths. On the other hand, the refrigerant flow path flows in one pass without making a U-turn.
When the refrigerant flow path is one pass, the pair of pipes that serve as the inlet and outlet of the refrigerant are arranged apart from each other, and when it is necessary to arrange the pair of pipes close to each other, there is a drawback that the request cannot be met. ..

特開２０１３−８８０１０号公報Japanese Unexamined Patent Publication No. 2013-88010 特許第６２７６０５４号公報Japanese Patent No. 6276054

この欠点を解決し、更に冷媒流れ反転構造を省スペース化するための構造として、本発明者は、次の積層型熱交換器を考案している。
この積層型熱交換器は、偏平チューブの積層体からなる第１コア及び第２コアを有し、その両コアとの間を、偏平チューブの積層方向に分離して、偏平チューブの平面部に平行に仕切板を配置する。この仕切板を両コアの中間に配置した状態で、その両コアの外周全体を１つのケーシングで被嵌する。そして、仕切板とケーシングの内面側との間の一部に冷媒流れ反転構造を設け、冷媒流路側を２パス化している。
このような構造により、ガス流路側及び冷媒流路側をともに２パスに流通させることができ、更に、冷媒流れ反転構造の省スペース化を図ることができる。
なお、この構造は、本発明者が本願発明を創作するに当たり、その過程で考案したものであり、従来技術ではない。 The present inventor has devised the following laminated heat exchanger as a structure for solving this drawback and further saving the space of the refrigerant flow reversal structure.
This laminated heat exchanger has a first core and a second core made of a laminated body of flat tubes, and the two cores are separated in the laminating direction of the flat tubes to form a flat portion of the flat tubes. Arrange the partition plates in parallel. With this partition plate arranged in the middle of both cores, the entire outer circumference of both cores is fitted with one casing. Then, a refrigerant flow reversing structure is provided in a part between the partition plate and the inner surface side of the casing, and the refrigerant flow path side is made into two passes.
With such a structure, both the gas flow path side and the refrigerant flow path side can be circulated in two paths, and further, the space saving of the refrigerant flow reversal structure can be achieved.
It should be noted that this structure was devised in the process of the present inventor's creation of the present invention, and is not a prior art.

しかしながら、本発明者が考案した積層型熱交換器は、第１コアと第２コアとの間に仕切板を配置し、積層型熱交換器の組立て後に、仕切板が正確な位置に配置されているかを確認することができない欠点がある。
また、仕切板は薄い部品であるため、組み込み忘れが生じるおそれがある。
そこで、本発明は、仕切板を確実に正確な位置に配置するとともに、その仕切板の組み込み忘れを検出できる積層型熱交換器の提供することを課題とする。 However, in the laminated heat exchanger devised by the present inventor, a partition plate is arranged between the first core and the second core, and the partition plate is arranged at an accurate position after assembling the laminated heat exchanger. There is a drawback that it is not possible to confirm whether it is.
Moreover, since the partition plate is a thin part, there is a risk of forgetting to install it.
Therefore, it is an object of the present invention to provide a laminated heat exchanger capable of reliably arranging a partition plate at an accurate position and detecting forgetting to install the partition plate.

請求項１に記載の本発明は、対向する一対の平面部１ａと、両平面部１ａ間を連結する一対の側部１ｂとにより偏平チューブ１が形成され、夫々の平面部１ａが平行に位置するように多数の偏平チューブ１が積層されてコアを形成し、
コアの外周に沿ってケーシングが被嵌され、各偏平チューブ１内にガス流路が形成されると共に、各偏平チューブ１の外周とケーシングとの間に冷媒流路が形成され、ガス流路に流通するガスと冷媒流路に流通する冷媒との間に熱交換が行われる熱交換器において、
それぞれ前記偏平チューブ１の積層体よりなる第１コア２ａと、第２コア２ｂと、
両コア２ａ，２ｂとの間を、前記積層方向に分離して、前記平面部１ａに平行に配置した仕切板３と、
前記仕切板３を中間に位置して前記両コア２ａ，２ｂの外周全体に被嵌するケーシング４と、を具備し、
前記第１コア２ａの第１ガス流路５ａの一端と、前記第２コア２ｂの第２ガス流路５ｂの一端との間が、ガス１７の流れを反転させるガス流れ反転部材７で連結されており、
冷媒１６の流れが、第１コア２ａの第１冷媒流路６ａから第２コア２ｂの第２冷媒流路６ｂへ反転されており、
前記仕切板３の外周縁には、ケーシング４の外面側に向けて突出する係止爪３ｄが形成され、
前記ケーシング４には、前記仕切板３の係止爪３ｄを係合する係合部４ｅが形成されており、
前記仕切板３の係止爪３ｄが前記ケーシング４の係合部４ｅに係合された状態で、前記係止爪３ｄの先端がケーシング４の外面から突出している積層型熱交換器である。 According to the first aspect of the present invention, the flat tube 1 is formed by a pair of flat surface portions 1a facing each other and a pair of side portions 1b connecting the two flat surface portions 1a, and the flat surface portions 1a are positioned in parallel. A large number of flat tubes 1 are laminated to form a core so as to form a core.
A casing is fitted along the outer circumference of the core, a gas flow path is formed in each flat tube 1, and a refrigerant flow path is formed between the outer circumference of each flat tube 1 and the casing to form a gas flow path. In a heat exchanger in which heat is exchanged between the flowing gas and the refrigerant flowing in the refrigerant flow path.
The first core 2a and the second core 2b, which are made of the laminated body of the flat tube 1, respectively,
A partition plate 3 separated from the cores 2a and 2b in the stacking direction and arranged in parallel with the flat surface portion 1a.
A casing 4 in which the partition plate 3 is located in the middle and is fitted on the entire outer periphery of both cores 2a and 2b is provided.
One end of the first gas flow path 5a of the first core 2a and one end of the second gas flow path 5b of the second core 2b are connected by a gas flow reversing member 7 that reverses the flow of the gas 17. And
The flow of the refrigerant 16 is reversed from the first refrigerant flow path 6a of the first core 2a to the second refrigerant flow path 6b of the second core 2b.
A locking claw 3d protruding toward the outer surface side of the casing 4 is formed on the outer peripheral edge of the partition plate 3.
The casing 4 is formed with an engaging portion 4e that engages the locking claw 3d of the partition plate 3.
This is a laminated heat exchanger in which the tip of the locking claw 3d protrudes from the outer surface of the casing 4 in a state where the locking claw 3d of the partition plate 3 is engaged with the engaging portion 4e of the casing 4.

請求項２に記載の本発明は、請求項１に記載の積層型熱交換器において、
前記仕切板３の幅方向の縁部には、一対の前記係止爪３ｄが突設されており、その一対の係止爪３ｄは、前記仕切板３の前記ガス流れ反転部材７を配置する側に形成されている積層型熱交換器である。 The present invention according to claim 2 is the laminated heat exchanger according to claim 1.
A pair of the locking claws 3d are projected from the edge portion in the width direction of the partition plate 3, and the pair of locking claws 3d arrange the gas flow reversing member 7 of the partition plate 3. It is a laminated heat exchanger formed on the side.

請求項３に記載の本発明は、請求項１又は請求項２のいずれかに記載の積層型熱交換器において、
前記ケーシング４は、底部４ｃとその底部４ｃから立ち上がる一対の側壁部４ｄとからなるケーシング本体４ａと、そのケーシング本体４ａに嵌合される蓋体４ｂとから形成されており、
前記係合部４ｅが、前記ケーシング本体４ａの側壁部４ｄの前記ガス流れ反転部材７の配置側に形成されている積層型熱交換器である。 The present invention according to claim 3 is the laminated heat exchanger according to any one of claims 1 and 2.
The casing 4 is formed of a casing main body 4a composed of a bottom portion 4c and a pair of side wall portions 4d rising from the bottom portion 4c, and a lid body 4b fitted to the casing main body 4a.
The engaging portion 4e is a laminated heat exchanger formed on the arrangement side of the gas flow reversing member 7 of the side wall portion 4d of the casing main body 4a.

請求項４に記載の本発明は、請求項２又は請求項３のいずれかに記載の積層型熱交換器において、
前記係合部４ｅは、前記ガス流れ反転部材７側の方向の端部まで切欠かれて形成されたスリット２２であり、
前記仕切板３の前記係止爪３ｄが前記スリット２２に係止され、
前記ケーシング４と前記ガス流れ反転部材７との間に、前記係止爪３ｄが挟持されている積層型熱交換器である。 The present invention according to claim 4 is the laminated heat exchanger according to any one of claims 2 and 3.
The engaging portion 4e is a slit 22 formed by being cut out to an end portion in the direction of the gas flow reversing member 7.
The locking claw 3d of the partition plate 3 is locked to the slit 22.
This is a laminated heat exchanger in which the locking claw 3d is sandwiched between the casing 4 and the gas flow reversing member 7.

請求項５に記載の本発明は、請求項４に記載の積層型熱交換器において、
前記仕切板３の前記係止爪３ｄには、ろう材が塗布されていない積層型熱交換器である。 The present invention according to claim 5 is the laminated heat exchanger according to claim 4.
The locking claw 3d of the partition plate 3 is a laminated heat exchanger in which no brazing material is applied.

請求項６に記載の本発明は、請求項１に記載の積層型熱交換器において、
前記仕切板３は、その外周縁の一部に前記ケーシング４の内面と接触しない縁３ｃを有し、前記縁３ｃとケーシング４との間に連絡路８が形成されており、
冷媒１６の流れが、前記連絡路８を介して、第１コア２ａの第１冷媒流路６ａから第２コア２ｂの第２冷媒流路６ｂへ反転されている積層型熱交換器である。 The present invention according to claim 6 is the laminated heat exchanger according to claim 1.
The partition plate 3 has an edge 3c that does not come into contact with the inner surface of the casing 4 on a part of the outer peripheral edge thereof, and a connecting path 8 is formed between the edge 3c and the casing 4.
This is a laminated heat exchanger in which the flow of the refrigerant 16 is reversed from the first refrigerant flow path 6a of the first core 2a to the second refrigerant flow path 6b of the second core 2b via the connecting path 8.

請求項１に記載の積層型熱交換器は、仕切板３の外周縁にケーシング４の外面側に向けて突出する係止爪３ｄが形成され、ケーシング４に仕切板３の係止爪３ｄを係合する係合部４ｅが形成され、仕切板３の係止爪３ｄがケーシング４の係合部４ｅに係合された状態で、係止爪３ｄの先端がケーシング４の外面から突出しているものである。
そのため、仕切板３の位置決めが容易に出来、仕切板３が正確な位置にあることを確認することができる。 In the laminated heat exchanger according to claim 1, a locking claw 3d protruding toward the outer surface side of the casing 4 is formed on the outer peripheral edge of the partition plate 3, and the locking claw 3d of the partition plate 3 is formed on the casing 4. The engaging portion 4e to be engaged is formed, and the tip of the locking claw 3d protrudes from the outer surface of the casing 4 in a state where the locking claw 3d of the partition plate 3 is engaged with the engaging portion 4e of the casing 4. It is a thing.
Therefore, the partition plate 3 can be easily positioned, and it can be confirmed that the partition plate 3 is in an accurate position.

請求項２に記載の積層型熱交換器は、仕切板３の幅方向の縁部に一対の係止爪３ｄが突設されており、その一対の係止爪３ｄが仕切板３のガス流れ反転部材７を配置する側に形成されているものである。
このような位置に係止爪３ｄを設けることで、仕切板３の積層型熱交換器への組み付けが容易になる。 In the laminated heat exchanger according to claim 2, a pair of locking claws 3d are projected from the edge portion in the width direction of the partition plate 3, and the pair of locking claws 3d are the gas flow of the partition plate 3. It is formed on the side where the reversing member 7 is arranged.
By providing the locking claw 3d at such a position, the partition plate 3 can be easily assembled to the laminated heat exchanger.

請求項３に記載の積層型熱交換器は、ケーシング４が底部４ｃとその底部４ｃから立ち上がる一対の側壁部４ｄとからなるケーシング本体４ａと、そのケーシング本体４ａに嵌合される蓋体４ｂとから形成されており、係合部４ｅが、ケーシング本体４ａの側壁部４ｄのガス流れ反転部材７の配置側に形成されているものである。
この構成により、ケーシング本体４ａの仕切板３の係止爪３ｄが係止された側壁部４ｄは、蓋体４ｂの立ち上がり部によって押さえられることにより、仕切板３の係止爪３ｄとケーシング４の係合部４ｅとの組み付けが強固となる。 The laminated heat exchanger according to claim 3 includes a casing main body 4a in which the casing 4 is composed of a bottom portion 4c and a pair of side wall portions 4d rising from the bottom portion 4c, and a lid body 4b fitted to the casing main body 4a. The engaging portion 4e is formed on the side wall portion 4d of the casing main body 4a on the arrangement side of the gas flow reversing member 7.
With this configuration, the side wall portion 4d to which the locking claw 3d of the partition plate 3 of the casing main body 4a is locked is pressed by the rising portion of the lid 4b, so that the locking claw 3d of the partition plate 3 and the casing 4 are pressed. The assembly with the engaging portion 4e becomes strong.

請求項４に記載の積層型熱交換器は、係合部４ｅがガス流れ反転部材７側の方向の端部まで切欠かれて形成されたスリット２２であり、仕切板３の係止爪３ｄがスリット２２に係止され、ケーシング４とガス流れ反転部材７との間に、係止爪３ｄが挟持されるものである。
この構造により、仕切板３の係止爪３ｄの係合部４ｅへの組み付けが容易となるとともに、ケーシング４とガス流れ反転部材７との間に、係止爪３ｄが挟持されることで、仕切板３の係止爪３ｄの位置決めがされる。 The laminated heat exchanger according to claim 4 is a slit 22 formed by the engaging portion 4e being cut out to the end in the direction of the gas flow reversing member 7, and the locking claw 3d of the partition plate 3 is formed. It is locked to the slit 22 and the locking claw 3d is sandwiched between the casing 4 and the gas flow reversing member 7.
With this structure, the locking claw 3d of the partition plate 3 can be easily assembled to the engaging portion 4e, and the locking claw 3d is sandwiched between the casing 4 and the gas flow reversing member 7. The locking claw 3d of the partition plate 3 is positioned.

請求項５に記載の積層型熱交換器は、仕切板３の前記係止爪３ｄには、ろう材が塗布されていないものである。
この場合、ろう付け時に仕切板３に隣接する部品（コア，ガス流れ反転部材７）に塗布されたろう材が回り、ろう付けされることになるため、仕切板３にろう材を塗布する作業が不要となる。 In the laminated heat exchanger according to claim 5, the brazing material is not applied to the locking claw 3d of the partition plate 3.
In this case, the brazing material applied to the parts (core, gas flow reversing member 7) adjacent to the partition plate 3 is rotated and brazed at the time of brazing, so that the work of applying the brazing material to the partition plate 3 is performed. It becomes unnecessary.

請求項６に記載の積層型熱交換器は、仕切板３の外周縁の一部にケーシング４の内面と接触しない縁３ｃを有し、その縁３ｃとケーシング４との間に連絡路８が形成されており、冷媒１６の流れが、連絡路８を介して、第１コア２ａの第１冷媒流路６ａから第２コア２ｂの第２冷媒流路６ｂへ反転されているものである。
この構造により、冷媒の流れを反転させる構造をケーシングの内部に設けることができ、簡単な構造で積層型熱交換器の省スペース化ができる。 The laminated heat exchanger according to claim 6 has an edge 3c that does not come into contact with the inner surface of the casing 4 on a part of the outer peripheral edge of the partition plate 3, and a connecting path 8 is provided between the edge 3c and the casing 4. The flow of the refrigerant 16 is formed and is inverted from the first refrigerant flow path 6a of the first core 2a to the second refrigerant flow path 6b of the second core 2b via the connecting path 8.
With this structure, a structure for reversing the flow of the refrigerant can be provided inside the casing, and the space of the laminated heat exchanger can be saved with a simple structure.

本発明の第１実施例の積層型熱交換器を示す分解斜視図。The exploded perspective view which shows the laminated heat exchanger of 1st Example of this invention. 同積層型熱交換器の組立て斜視図及びＢ部拡大図。Assembled perspective view and enlarged view of part B of the laminated heat exchanger. 図２（Ｂ）の側面図及び図３（Ａ）のＢ−Ｂ矢視断面図。A side view of FIG. 2 (B) and a cross-sectional view taken along the line BB of FIG. 3 (A). 図２（Ａ）のＩＶ−ＩＶ矢視断面図。FIG. 2 (A) is a cross-sectional view taken along the line IV-IV. 図４のＶ−Ｖ矢視断面図。FIG. 4 is a cross-sectional view taken along the line VV of FIG. 本発明の第２実施例の積層型熱交換器の仕切板３の組み付け状態を示す側面図及び図６（Ａ）のＢ−Ｂ矢視断面図。A side view showing an assembled state of the partition plate 3 of the laminated heat exchanger of the second embodiment of the present invention, and a cross-sectional view taken along the line BB of FIG. 6 (A). 本発明の第３実施例の積層型熱交換器の仕切板３の組み付け状態を示す側面図及び図７（Ａ）のＢ−Ｂ矢視断面図。A side view showing an assembled state of the partition plate 3 of the laminated heat exchanger according to the third embodiment of the present invention, and a cross-sectional view taken along the line BB of FIG. 7 (A).

次に、図面に基づいて、本発明の実施の形態につき、説明する。
図１〜図５は、本発明の第１実施例の積層型熱交換器を示す。図１はその分解斜視図、図２（Ａ）は同組立て斜視図、図２（Ｂ）は図２（Ａ）のＢ部拡大図、図３（Ａ）は図２（Ｂ）の側面図、図３（Ｂ）は図３（Ａ）のＢ−Ｂ矢視断面図である。また、図４は図２（Ａ）のＩＶ−ＩＶ矢視断面図であり、図５は図４のＶ−Ｖ矢視断面図である。 Next, an embodiment of the present invention will be described with reference to the drawings.
1 to 5 show a laminated heat exchanger according to a first embodiment of the present invention. 1 is an exploded perspective view thereof, FIG. 2 (A) is an assembled perspective view, FIG. 2 (B) is an enlarged view of part B of FIG. 2 (A), and FIG. 3 (A) is a side view of FIG. 2 (B). , FIG. 3 (B) is a cross-sectional view taken along the line BB of FIG. 3 (A). Further, FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2 (A), and FIG. 5 is a cross-sectional view taken along the line V-V of FIG.

この熱交換器は、それぞれ偏平チューブ１の積層体からなる第１コア２ａと第２コア２ｂとを有する。各偏平チューブ１は、その横断面が矩形に形成されており、対向する一対の平面部１ａと、その平面部１ａ間を連結する側部１ｂを有する。各コア２ａ、２ｂは、平面部１ａが平行になるように積層される。
それらの各コア２ａ、２ｂが、仕切板３を介して、積層されることにより、積層コアが形成される。積層コアの外周がケーシング４で被嵌される。 This heat exchanger has a first core 2a and a second core 2b, which are made of a laminated body of flat tubes 1, respectively. Each flat tube 1 has a rectangular cross section, and has a pair of flat surface portions 1a facing each other and a side portion 1b connecting the flat surface portions 1a. The cores 2a and 2b are laminated so that the flat surface portions 1a are parallel to each other.
The laminated cores are formed by laminating the respective cores 2a and 2b via the partition plate 3. The outer circumference of the laminated core is fitted with the casing 4.

この形態では、各偏平チューブ１の軸線方向の両端は、厚み方向に拡開され、その開口が方形となる拡開部１ｃが形成されている。そして、第１コア２ａ、第２コア２ｂはそれぞれ偏平チューブ１の拡開部１ｃにおいて、積層される。
この例では、図１及び図２に示すように、第１コア２ａのガス１７の流れの上流端、第２コア２ｂのガス１７の流れの下流端には、ガスヘッダ１３が被嵌されている。また、第１コア２ａのガス１７の流れの下流端、第２コア２ｂのガス１７の流れの上流端には、各コア２ａ、２ｂを束ねる枠体１５が被嵌されている。 In this form, both ends of each flat tube 1 in the axial direction are expanded in the thickness direction, and an expanded portion 1c having a square opening is formed. Then, the first core 2a and the second core 2b are laminated in the expanded portion 1c of the flat tube 1, respectively.
In this example, as shown in FIGS. 1 and 2, a gas header 13 is fitted at the upstream end of the gas 17 flow of the first core 2a and the downstream end of the gas 17 flow of the second core 2b. .. Further, a frame body 15 for bundling the cores 2a and 2b is fitted at the downstream end of the flow of the gas 17 of the first core 2a and the upstream end of the flow of the gas 17 of the second core 2b.

第１コア２ａ、第２コア２ｂを被嵌するケーシング４には、複数のケーシング膨出部２０が形成されている。偏平チューブ１の平面部１ａの４隅に配置されたケーシング膨出部２０は、そのうちの１つ以上の隅部に連絡路８を構成するケーシング膨出部２０を配置することが好ましい。この例では、後述に述べる第１冷媒流路６ａの冷媒流れの下流側で、且つ、第２冷媒流路６ｂの冷媒流れの上流側に相当する部分の２隅に、連絡路８を構成するケーシング膨出部２０が形成されている。
また、各ケーシング膨出部２０は、側部１ｂに平行で、且つケーシング４に一体に外側に膨出している。 A plurality of casing bulging portions 20 are formed in the casing 4 in which the first core 2a and the second core 2b are fitted. The casing bulging portions 20 arranged at the four corners of the flat surface portion 1a of the flat tube 1 preferably have the casing bulging portions 20 forming the connecting path 8 arranged at one or more corners thereof. In this example, the connecting paths 8 are formed at two corners of the portion corresponding to the downstream side of the refrigerant flow of the first refrigerant flow path 6a and the upstream side of the refrigerant flow of the second refrigerant flow path 6b, which will be described later. The casing bulging portion 20 is formed.
Further, each casing bulging portion 20 is parallel to the side portion 1b and bulges outward integrally with the casing 4.

第１コア２ａと第２コア２ｂとの間には、それらを積層方向に分離する仕切板３が、偏平チューブ１の平面部１ａに平行に配置される。
仕切板３は、その平面において、２つの隅部（連絡路８以外のケーシング膨出部２０に相当する位置）に、仕切板３の幅方向に突出する凸部３ｂを有し、ケーシング４の連絡路８を構成する２つの隅部には、ケーシング４と接触しない縁３ｃを有する。
そして、その連絡路８以外のケーシング膨出部２０では、仕切板３の凸部３ｂがケーシング膨出部２０の内面と接触し、ケーシング膨出部２０内を積層方向に閉塞する。
図５に示す如く、仕切板３のケーシング４と接触しない縁３ｃとケーシング膨出部２０とにより、第１冷媒流路６ａと第２冷媒流路６ｂを連通する連絡路８が形成される。 Between the first core 2a and the second core 2b, a partition plate 3 that separates them in the stacking direction is arranged parallel to the flat surface portion 1a of the flat tube 1.
The partition plate 3 has convex portions 3b protruding in the width direction of the partition plate 3 at two corners (positions corresponding to the casing bulging portion 20 other than the connecting path 8) on the plane thereof, and the casing 4 has. The two corners forming the connecting path 8 have edges 3c that do not come into contact with the casing 4.
Then, in the casing bulging portion 20 other than the connecting path 8, the convex portion 3b of the partition plate 3 comes into contact with the inner surface of the casing bulging portion 20 and closes the inside of the casing bulging portion 20 in the stacking direction.
As shown in FIG. 5, the edge 3c of the partition plate 3 that does not come into contact with the casing 4 and the casing bulging portion 20 form a communication path 8 that communicates the first refrigerant flow path 6a and the second refrigerant flow path 6b.

第１コア２ａ、第２コア２ｂの一方の端部間は、枠体１５を介して、ガス流れ反転部材７により連結される。この例では、ガス流れ反転部材７は湾曲したＵターン部を有するタンクで形成されている。さらに、第１コア２ａ、第２コア２ｂの他方の端部間は、フランジ９に接続される。フランジ９は、偏平チューブ１の積層方向の中間に架橋部９ａが形成され、その内側に一対のガスヘッダ１３の開口縁が接続される。
仕切板３は、第１コア２ａのガスへッダ１３と第２コア２ｂのガスへッダ１３との間に、挟持されている。 One end of the first core 2a and the second core 2b is connected by a gas flow reversing member 7 via a frame body 15. In this example, the gas flow reversing member 7 is formed of a tank having a curved U-turn portion. Further, the other ends of the first core 2a and the second core 2b are connected to the flange 9. In the flange 9, a crosslinked portion 9a is formed in the middle of the flat tube 1 in the stacking direction, and the opening edges of the pair of gas headers 13 are connected to the inside thereof.
The partition plate 3 is sandwiched between the gas header 13 of the first core 2a and the gas header 13 of the second core 2b.

ケーシング４には、一対の冷媒パイプ１４が突設される。
この例では、図１に示す如く、一方の冷媒パイプ１４は、仕切板３で分離された第１コア２ａの第１冷媒流路６ａに連通し、第１冷媒流路６ａの冷媒流れの上流側のケーシング膨出部２０に突設されている。他方の冷媒パイプ１４は、第２コア２ｂの第２冷媒流路６ｂに連通し、第２冷媒流路６ｂの冷媒流れの下流側で、一方の冷媒パイプ１４と同一位置のケーシング膨出部２０に突設されている。 A pair of refrigerant pipes 14 are projected from the casing 4.
In this example, as shown in FIG. 1, one of the refrigerant pipes 14 communicates with the first refrigerant flow path 6a of the first core 2a separated by the partition plate 3, and is upstream of the refrigerant flow of the first refrigerant flow path 6a. It is projected from the casing bulging portion 20 on the side. The other refrigerant pipe 14 communicates with the second refrigerant flow path 6b of the second core 2b, and the casing bulging portion 20 at the same position as the one refrigerant pipe 14 on the downstream side of the refrigerant flow of the second refrigerant flow path 6b. It is thrust into.

この積層型熱交換器は、図２（Ａ）及び図４において、ガス１７がフランジ９の架橋部９ａの右上側から第１コア２ａに流入する。そのガス１７が偏平チューブ１の内部を左側へ流通して、ガス流れ反転部材７によりガス１７の流れが下方に反転し、フランジ９の架橋部９ａの右下側から流出する。
また、冷媒１６は、第１冷媒流路６ａと連通する右上側の冷媒パイプ１４から流入し、第１コア２ａの各偏平チューブ１の外面側を左に流通する。その冷媒１６の流れが、仕切板３の縁３ｃ（図１参照）とケーシング４の内周との間に形成される連絡路８を流通（図５参照）することで、冷媒１６の流れが下方に反転する。そして、第２コア２ｂの各偏平チューブ１の外面側を右方に流通して、それが第２冷媒流路６ｂと連通する右下側の冷媒パイプ１４から流出する。
そして、冷媒１６とガス１７との間に熱交換が行われる。 In this laminated heat exchanger, in FIGS. 2A and 4, the gas 17 flows into the first core 2a from the upper right side of the crosslinked portion 9a of the flange 9. The gas 17 flows to the left inside the flat tube 1, the flow of the gas 17 is reversed downward by the gas flow reversing member 7, and the gas 17 flows out from the lower right side of the crosslinked portion 9a of the flange 9.
Further, the refrigerant 16 flows in from the refrigerant pipe 14 on the upper right side communicating with the first refrigerant flow path 6a, and flows to the left on the outer surface side of each flat tube 1 of the first core 2a. The flow of the refrigerant 16 flows through the connecting path 8 formed between the edge 3c of the partition plate 3 (see FIG. 1) and the inner circumference of the casing 4 (see FIG. 5), so that the flow of the refrigerant 16 flows. Flip down. Then, it circulates to the right on the outer surface side of each flat tube 1 of the second core 2b, and flows out from the lower right refrigerant pipe 14 communicating with the second refrigerant flow path 6b.
Then, heat exchange is performed between the refrigerant 16 and the gas 17.

一例として、図４に示すように、冷媒流れとガス流れとは並行流とすることができる。その場合、ガスの流入口近傍に冷媒入口用の冷媒パイプ１４を配管し、ガスの流出口近傍に冷媒出口用の冷媒パイプ１４を配管すると、沸騰が起こりやすいガス入口側を集中的に冷却することができるため、沸騰を防止できる。
また、図１に示すように、仕切板３の側部端に空気抜き３ａを欠設しておくと良い。積層型熱交換器の全体が重力方向に平行に位置され、ガス流れ反転部材７が下側に配置され、フランジ９が上側に配置されるように使用する場合、この空気抜き３ａは各コアの上端部に滞留する空気を一方のコアから他方のコアに流通させ、出口側の冷媒パイプ１４から外部に滞留した空気を放出することができる。 As an example, as shown in FIG. 4, the refrigerant flow and the gas flow can be parallel flows. In that case, if the refrigerant pipe 14 for the refrigerant inlet is piped near the gas inlet and the refrigerant pipe 14 for the refrigerant outlet is piped near the gas outlet, the gas inlet side where boiling is likely to occur is intensively cooled. Therefore, boiling can be prevented.
Further, as shown in FIG. 1, it is preferable that the air vent 3a is not provided at the side end of the partition plate 3. When the entire laminated heat exchanger is positioned parallel to the direction of gravity, the gas flow reversing member 7 is arranged on the lower side, and the flange 9 is arranged on the upper side, the air vent 3a is the upper end of each core. The air staying in the portion can be circulated from one core to the other core, and the air staying in the outside can be discharged from the refrigerant pipe 14 on the outlet side.

本発明の積層型熱交換器は、仕切板３の位置決め構造に特徴がある。
第１実施例の積層型熱交換器の仕切板３の外周縁には、ケーシング４の外面側に向けて突出する係止爪３ｄが形成されている。
具体的には、図１及び図２に示す如く、仕切板３のガス流れ反転部材７を配置する側で、且つ、仕切板３の幅方向の両側の縁部に、その部分からガス流れ反転部材７側の方向へ延長する付根部３ｆが形成され、付根部３ｆの外周縁から係止爪３ｄがケーシングの外面側に向けて突出している。 The laminated heat exchanger of the present invention is characterized by a positioning structure of the partition plate 3.
A locking claw 3d that projects toward the outer surface side of the casing 4 is formed on the outer peripheral edge of the partition plate 3 of the laminated heat exchanger of the first embodiment.
Specifically, as shown in FIGS. 1 and 2, the gas flow is reversed from the portion of the partition plate 3 on the side where the gas flow reversing member 7 is arranged and on both side edges of the partition plate 3 in the width direction. A root portion 3f extending in the direction of the member 7 side is formed, and the locking claw 3d projects from the outer peripheral edge of the root portion 3f toward the outer surface side of the casing.

また、ケーシング４には、仕切板３の係止爪３ｄを係合する係合部４ｅが形成されている。
この例のケーシング４は、底部４ｃとその底部４ｃから立ち上がる一対の側壁部４ｄとからなるケーシング本体４ａと、そのケーシング本体４ａに嵌合される蓋体４ｂとから形成されている。この例では、上記係合部４ｅは、ケーシング本体４ａの側壁部４ｄのガス流れ反転部材７の配置側に孔２１として形成されている。孔２１の高さは、仕切板３の板厚と同程度とし、孔２１の幅も仕切板３の係止爪３ｄの幅と同程度とすることが好ましい。
仕切板３の係止爪３ｄをケーシング４の孔２１に挿通することにより、係合する。この係合状態において、図３（Ｂ）に示す如く、係止爪３ｄの先端はケーシング４の外面から突出する。
仕切板３の付根部３ｆの外周縁は、ケーシングの側壁部４ｄの内面と接触する。 Further, the casing 4 is formed with an engaging portion 4e for engaging the locking claw 3d of the partition plate 3.
The casing 4 of this example is formed of a casing main body 4a including a bottom portion 4c and a pair of side wall portions 4d rising from the bottom portion 4c, and a lid body 4b fitted to the casing main body 4a. In this example, the engaging portion 4e is formed as a hole 21 on the arrangement side of the gas flow reversing member 7 of the side wall portion 4d of the casing main body 4a. It is preferable that the height of the hole 21 is about the same as the thickness of the partition plate 3 and the width of the hole 21 is also about the same as the width of the locking claw 3d of the partition plate 3.
The locking claw 3d of the partition plate 3 is inserted into the hole 21 of the casing 4 to engage the partition plate 3. In this engaged state, as shown in FIG. 3B, the tip of the locking claw 3d protrudes from the outer surface of the casing 4.
The outer peripheral edge of the root portion 3f of the partition plate 3 comes into contact with the inner surface of the side wall portion 4d of the casing.

また、ガス流れ反転部材７のケーシング４との接続部の縁には、係止爪３ｄが整合する位置に欠切部７ａが形成されている。この欠切部７ａは、図２（Ｂ）、図３のように、ガス流れ反転部材７がケーシング４と嵌着した時に、係止爪３ｄと干渉しないようにするために設けられる。また、この欠切部７ａは、形成しなくともよい。 Further, a notch portion 7a is formed at a position where the locking claws 3d are aligned on the edge of the connection portion of the gas flow reversing member 7 with the casing 4. As shown in FIGS. 2B and 3, the cutout portion 7a is provided so as not to interfere with the locking claw 3d when the gas flow reversing member 7 is fitted to the casing 4. Further, the cutout portion 7a does not have to be formed.

ケーシング４の係合部４ｅに仕切板３の係止爪３ｄを挿通することにより、仕切板３の上下、左右、前後が仮固定される。また、仕切板３の係止爪３ｄの先端がケーシング４の外面から突出している。そのため、簡単な構造で、仕切板３の組み込み忘れを防止することができ、仕切板３が的確な位置にあることを確認することができる。
また、ケーシング４がケーシング本体４ａと、そのケーシング本体４ａに嵌合される蓋体４ｂとから形成されている場合、仕切板３の係止爪３ｄをケーシング本体４ａの側壁部４ｄの係合部４ｅに取付けることが容易であり、仕切板３がケーシング本体４ａに取付けられた状態で、蓋体４ｂの立ち上がり部によって押さえられることにより、仕切板３の係止爪３ｄとケーシング４ａの係合部４ｅとの組み付けが強固となる。 By inserting the locking claw 3d of the partition plate 3 into the engaging portion 4e of the casing 4, the top, bottom, left, right, front and back of the partition plate 3 are temporarily fixed. Further, the tip of the locking claw 3d of the partition plate 3 projects from the outer surface of the casing 4. Therefore, with a simple structure, it is possible to prevent the partition plate 3 from being forgotten to be assembled, and it is possible to confirm that the partition plate 3 is in an accurate position.
Further, when the casing 4 is formed of the casing main body 4a and the lid 4b fitted to the casing main body 4a, the locking claw 3d of the partition plate 3 is engaged with the side wall portion 4d of the casing main body 4a. It is easy to attach to 4e, and when the partition plate 3 is attached to the casing body 4a, it is pressed by the rising portion of the lid 4b, so that the engaging portion between the locking claw 3d of the partition plate 3 and the casing 4a The assembly with 4e becomes strong.

このように組み立てた積層型熱交換器は、高温の炉内で一体的にろう付される。
このろう付の際、仕切板３に隣接する部品（例えば、各コア２ａ、２ｂ，ガス流れ反転部材７）にろう材を塗布しておくことで、ろう材が塗布された部材から仕切板３の各接触部分にろう材が回り、仕切板３がろう付けされることになるため、仕切板３にろう材を塗布する作業が不要となる。 The laminated heat exchanger assembled in this way is integrally brazed in a high temperature furnace.
At the time of this brazing, by applying the brazing material to the parts (for example, each core 2a, 2b, the gas flow reversing member 7) adjacent to the partition plate 3, the partition plate 3 is formed from the member coated with the brazing material. Since the brazing material is rotated around each contact portion of the above and the partition plate 3 is brazed, the work of applying the brazing material to the partition plate 3 becomes unnecessary.

仕切板３の組み込み忘れや、位置ずれが起こると、ケーシング４と各コア２ａ、２ｂ間に仕切板３の板厚分の隙間が生じ、その隙間の部分から冷媒漏れが生じるおそれがある。また、仕切板３の組み込み忘れや、位置ずれは、冷媒入口用の冷媒パイプ１４から流入した冷媒が、第１コア２ａから第２コア２ｂへ流通せずに、直接、冷媒出口用の冷媒パイプ１４から流出するため、熱交換が不可能な状態になる。
上述のような仕切板３の位置決め構造を有することで、仕切板３の組み込み忘れや、位置ずれが起こることを防止できる。
図１に示すように、各コア２ａ、２ｂの偏平チューブ１の表面にディンプル１８を突設しておき、仕切板３には、そのディンプル１８の先端と当接するディンプル３ｅを突設しておくと良い。この構造は、ろう付時に積層型熱交換器のケーシングの外側から治具により加えられる圧縮を受けた時に、偏平チューブ１にその圧縮を十分に伝えることができ、各偏平チューブ１の内部に挿入されたインナーフィンが密着した状態でろう付をすることができる。 If the partition plate 3 is forgotten to be assembled or the position is displaced, a gap corresponding to the thickness of the partition plate 3 is generated between the casing 4 and the cores 2a and 2b, and the refrigerant may leak from the gap portion. Further, if the partition plate 3 is forgotten to be installed or the position is misaligned, the refrigerant flowing from the refrigerant pipe 14 for the refrigerant inlet does not flow from the first core 2a to the second core 2b, but directly to the refrigerant pipe for the refrigerant outlet. Since it flows out from 14, heat exchange becomes impossible.
By having the positioning structure of the partition plate 3 as described above, it is possible to prevent the partition plate 3 from being forgotten to be assembled or misalignment.
As shown in FIG. 1, dimples 18 are projected on the surface of the flat tubes 1 of the cores 2a and 2b, and dimples 3e that come into contact with the tips of the dimples 18 are projected on the partition plate 3. Is good. This structure can sufficiently transmit the compression to the flat tube 1 when it receives the compression applied by the jig from the outside of the casing of the laminated heat exchanger during brazing, and is inserted into each flat tube 1. Brazing can be performed with the inner fins in close contact with each other.

図６（Ａ）は、本発明の第２実施例の積層型熱交換器の仕切板３の組み付け状態を示す側面図であり、図６（Ｂ）は図６（Ａ）のＢ−Ｂ矢視断面図である。
この実施例が第１実施例と異なる点は、係止爪３ｄと係合部４ｅとの係合構造の点である。
この実施例のケーシング４の係合部４ｅは、ガス流れ反転部材７の接続部側の方向の端部まで切欠かれてスリット２２が形成されている。このスリット２２に仕切板３の係止爪３ｄをスリット２２の端部まで挿通し、当接させる。その後、ガス流れ反転部材７をケーシング４に嵌合し、ケーシング４とガス流れ反転部材７との間に、係止爪３ｄを挟持した状態でろう付固定される。
この構造の場合、係合部４ｅが孔２１の場合よりも、仕切板３の係止爪３ｄのケーシング４への組み付け及び位置決めが容易となる。 FIG. 6A is a side view showing an assembled state of the partition plate 3 of the laminated heat exchanger according to the second embodiment of the present invention, and FIG. 6B is an arrow BB of FIG. 6A. It is a cross-sectional view.
The difference between this embodiment and the first embodiment is the engagement structure between the locking claw 3d and the engaging portion 4e.
The engaging portion 4e of the casing 4 of this embodiment is cut out to the end in the direction of the connecting portion side of the gas flow reversing member 7 to form a slit 22. The locking claw 3d of the partition plate 3 is inserted into the slit 22 up to the end of the slit 22 and brought into contact with the slit 22. After that, the gas flow reversing member 7 is fitted to the casing 4, and the locking claw 3d is sandwiched between the casing 4 and the gas flow reversing member 7 and fixed by brazing.
In the case of this structure, assembling and positioning of the locking claw 3d of the partition plate 3 to the casing 4 is easier than in the case where the engaging portion 4e is the hole 21.

図７（Ａ）は、本発明の第３実施例の積層型熱交換器の仕切板３の組み付け状態を示す側面図であり、図７（Ｂ）は図７（Ａ）のＢ−Ｂ矢視断面図である。
この実施例が第２実施例と異なる点は、ガス流れ反転部材７に切欠き７ａが設けられていない点である。
このように切欠き７ａがないガス流れ反転部材７の端面であっても、第２実施例と同様の効果が得られる。 FIG. 7A is a side view showing an assembled state of the partition plate 3 of the laminated heat exchanger according to the third embodiment of the present invention, and FIG. 7B is an arrow BB of FIG. 7A. It is a cross-sectional view.
The difference between this embodiment and the second embodiment is that the gas flow reversing member 7 is not provided with the notch 7a.
Even with the end face of the gas flow reversing member 7 having no notch 7a as described above, the same effect as that of the second embodiment can be obtained.

本発明の積層型熱交換器の各コア２ａ、２ｂの構成、各コア２ａ、２ｂを形成する偏平チューブ１の構成、ケーシング４の構成、ガス流れ反転部材７の構成は、図示されているものに限定されるものではない。
例えば、ガス流れ反転部材７として、湾曲したＵターン部を有するタンクに替えて、Ｕ字状の幅広の管体等を用いることができる。
各偏平チューブ１の両端は、拡開部１ｃを有してなくともよい。その場合、一対のヘッダープレートの偏平孔に各偏平チューブ１を挿通し、各ヘッダープレートにそれぞれヘッダ本体が取付けられる。
本発明の仕切板３の係止爪３ｄの位置は、図面に記載された実施例の位置に限るものではない。例えば、付根部３ｆを設けずに、仕切板３の凸部３ｂの位置に設けることもできる。 The configurations of the cores 2a and 2b of the laminated heat exchanger of the present invention, the configuration of the flat tube 1 forming the cores 2a and 2b, the configuration of the casing 4, and the configuration of the gas flow reversing member 7 are illustrated. It is not limited to.
For example, as the gas flow reversing member 7, a U-shaped wide tube or the like can be used instead of the tank having a curved U-turn portion.
Both ends of each flat tube 1 do not have to have the expansion portion 1c. In that case, each flat tube 1 is inserted into the flat holes of the pair of header plates, and the header body is attached to each header plate.
The position of the locking claw 3d of the partition plate 3 of the present invention is not limited to the position of the embodiment described in the drawings. For example, the root portion 3f may not be provided, but may be provided at the position of the convex portion 3b of the partition plate 3.

１偏平チューブ
１ａ平面部
１ｂ側部
１ｃ拡開部
２ａ第１コア
２ｂ第２コア 1 Flat tube 1a Flat part 1b Side part 1c Expansion part 2a 1st core 2b 2nd core

３仕切板
３ａ空気抜き
３ｂ凸部
３ｃ縁
３ｄ係止爪
３ｅディンプル
３ｆ付根部 3 Partition plate 3a Air vent 3b Convex part 3c Edge 3d Locking claw 3e Dimple 3f Root part

４ケーシング
４ａケーシング本体
４ｂ蓋体
４ｃ底部
４ｄ側壁部
４ｅ係合部 4 Casing 4a Casing body 4b Lid 4c Bottom 4d Side wall 4e Engagement

５ａ第１ガス流路
５ｂ第２ガス流路
６ａ第１冷媒流路
６ｂ第２冷媒流路
７ガス流れ反転部材
７ａ切欠き
８連絡路
９フランジ
９ａ架橋部 5a 1st gas flow path 5b 2nd gas flow path 6a 1st refrigerant flow path 6b 2nd refrigerant flow path 7 Gas flow reversing member 7a Notch 8 Communication path 9 Flange 9a Cross-linking part

１３ガスヘッダ
１４冷媒パイプ
１５枠体
１６冷媒
１７ガス
１８ディンプル
２０ケーシング膨出部
２１孔
２２スリット 13 Gas header 14 Refrigerant pipe 15 Frame 16 Refrigerant 17 Gas 18 Dimples 20 Casing bulge 21 Holes 22 Slits

Claims

A flat tube (1) is formed by a pair of flat surface portions (1a) facing each other and a pair of side portions (1b) connecting both flat surface portions (1a), and the flat surface portions (1a) are positioned in parallel. A large number of flat tubes (1) are laminated to form a core so as to form a core.
A casing is fitted along the outer periphery of the core, a gas flow path is formed in each flat tube (1), and a refrigerant flow path is formed between the outer periphery of each flat tube (1) and the casing. In a heat exchanger in which heat is exchanged between the gas flowing in the gas flow path and the refrigerant flowing in the refrigerant flow path.
A first core (2a) and a second core (2b) made of a laminated body of the flat tube (1), respectively,
A partition plate (3) separated from both cores (2a) and (2b) in the stacking direction and arranged in parallel with the flat surface portion (1a).
A casing (4) in which the partition plate (3) is located in the middle and is fitted on the entire outer circumference of both cores (2a) and (2b) is provided.
The flow of gas (17) flows between one end of the first gas flow path (5a) of the first core (2a) and one end of the second gas flow path (5b) of the second core (2b). It is connected by a gas flow reversing member (7) to be reversed,
The flow of the refrigerant (16) is reversed from the first refrigerant flow path (6a) of the first core (2a) to the second refrigerant flow path (6b) of the second core (2b).
A locking claw (3d) protruding toward the outer surface side of the casing (4) is formed on the outer peripheral edge of the partition plate (3).
The casing (4) is formed with an engaging portion (4e) for engaging the locking claw (3d) of the partition plate (3).
In a state where the locking claw (3d) of the partition plate (3) is engaged with the engaging portion (4e) of the casing (4), the tip of the locking claw (3d) is the outer surface of the casing (4). Laminated heat exchanger protruding from.

In the laminated heat exchanger according to claim 1,
A pair of the locking claws (3d) are projected from the edge portion in the width direction of the partition plate (3), and the pair of locking claws (3d) are the said to the partition plate (3). A laminated heat exchanger formed on the side where the gas flow reversing member (7) is arranged.

In the laminated heat exchanger according to claim 1 or 2.
The casing (4) has a casing main body (4a) composed of a bottom portion (4c) and a pair of side wall portions (4d) rising from the bottom portion (4c), and a lid body (4a) fitted to the casing main body (4a). It is formed from 4b) and
A laminated heat exchanger in which the engaging portion (4e) is formed on the side wall portion (4d) of the casing main body (4a) on the arrangement side of the gas flow reversing member (7).

In the laminated heat exchanger according to any one of claims 2 or 3.
The engaging portion (4e) is a slit (22) formed by being cut out to an end portion in the direction toward the gas flow reversing member (7).
The locking claw (3d) of the partition plate (3) is locked to the slit (22).
A laminated heat exchanger in which the locking claw (3d) is sandwiched between the casing (4) and the gas flow reversing member (7).

In the laminated heat exchanger according to claim 4,
A laminated heat exchanger in which a brazing material is not applied to the locking claw (3d) of the partition plate (3).

In the laminated heat exchanger according to claim 1,
The partition plate (3) has an edge (3c) that does not come into contact with the inner surface of the casing (4) on a part of the outer peripheral edge thereof, and a connecting path (3c) is provided between the edge (3c) and the casing (4). 8) is formed,
The flow of the refrigerant (16) flows from the first refrigerant flow path (6a) of the first core (2a) to the second refrigerant flow path (6b) of the second core (2b) via the connecting path (8). Laminated heat exchanger that is inverted.