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JP2011158127A - Heat exchanger - Google Patents

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JP2011158127A
JP2011158127A JP2010018301A JP2010018301A JP2011158127A JP 2011158127 A JP2011158127 A JP 2011158127A JP 2010018301 A JP2010018301 A JP 2010018301A JP 2010018301 A JP2010018301 A JP 2010018301A JP 2011158127 A JP2011158127 A JP 2011158127A
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refrigerant
refrigerant inlet
header
space
heat exchange
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基之 ▲高▼木
Motoyuki Takagi
Naohisa Higashiyama
直久 東山
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Resonac Holdings Corp
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Showa Denko KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of further homogenizing a discharged air temperature in a case of being used as an evaporator. <P>SOLUTION: This evaporator 1 includes a refrigerant inlet header portion 5 having a refrigerant inlet 8 at its right end, and a plurality of heat exchange tubes 16 connected to the refrigerant inlet header portion 5. The inside of the refrigerant inlet header portion 5 is divided into first and second spaces 35, 36 by a partitioning portion 37 in a state of being vertically arranged. The refrigerant inlet 8 is communicated with the first space 35, and the heat exchange tubes 16 face the second space 36. A refrigerant flows into the second space 36 from the first space 35 through a communicating port 48 formed on a left end of the partitioning portion 37. Projecting portions 45 projecting to a heat exchanger 16 side, and recessed portions 46 recessed to the opposite side are alternately disposed in the longitudinal direction of the refrigerant inlet header portion 5, on a part at a refrigerant inlet 8 side with respect to the communicating port 48 of a lower face facing the second space 36, of the partitioning portion 37 in the refrigerant inlet header portion 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、たとえば自動車に搭載される冷凍サイクルであるカーエアコンのエバポレータに好適に使用される熱交換器に関する。   The present invention relates to a heat exchanger that is suitably used for an evaporator of a car air conditioner that is a refrigeration cycle mounted on an automobile, for example.

この明細書および特許請求の範囲において、図1〜図3の上下を上下というものとする。   In this specification and claims, the top and bottom of FIGS.

たとえば高性能化および小型軽量化の要求を満たすエバポレータとして、本出願人は、先に、上下方向に間隔をおいて配置された1対のヘッダタンクと、両ヘッダタンク間に、長さ方向を上下方向に向けるとともにヘッダタンクの長さ方向に間隔をおいて配置された複数の扁平状熱交換管とを備えており、上側の第1ヘッダタンクが、冷媒入口ヘッダ部と、冷媒入口ヘッダ部の風上側に設けられるとともに冷媒入口ヘッダ部に一体化された冷媒出口ヘッダ部とを備え、下側の第2ヘッダタンクが、冷媒入口ヘッダ部と対向するように設けられた第1中間ヘッダ部と、冷媒出口ヘッダ部と対向するように第1中間ヘッダ部の風上側に設けられるとともに第1中間ヘッダ部に一体化された第2中間ヘッダ部とを備え、両ヘッダタンクの各ヘッダ部どうしの間に、それぞれ両ヘッダタンクの長さ方向に間隔をおいて配置された複数の熱交換管からなる熱交換管群が1列ずつ設けられるとともに、各熱交換管群の熱交換管の上下両端部が、第1ヘッダタンクの各ヘッダ部および第2ヘッダタンクの各ヘッダ部に接続され、冷媒入口ヘッダ部の一端部に冷媒入口が設けられるとともに他端が閉鎖され、冷媒出口ヘッダ部における冷媒入口と同一端部に冷媒出口が設けられるとともに他端部が閉鎖され、冷媒入口ヘッダ部内が、仕切部によって上下に並んだ第1および第2の空間に区画され、冷媒入口が第1空間内に通じるとともに、第2空間内に熱交換管が臨むようになされ、当該仕切部における冷媒入口ヘッダ部の閉鎖端部に、第1空間と第2空間とを通じさせる連通口が形成され、冷媒入口から冷媒入口ヘッダ部内に流入した冷媒が、連通口を通って流れ方向を変えるようにUターンして第1空間から第2空間に入った後、熱交換管内に流入するようになされたエバポレータを提案した(特許文献1参照)。   For example, as an evaporator that satisfies the demands for high performance and small size and light weight, the present applicant has previously set a length direction between a pair of header tanks arranged at intervals in the vertical direction and the header tanks. A plurality of flat heat exchange pipes that are oriented in the vertical direction and spaced apart in the length direction of the header tank, the upper first header tank comprising a refrigerant inlet header section, and a refrigerant inlet header section And a refrigerant outlet header part integrated with the refrigerant inlet header part, and a first intermediate header part provided so that the lower second header tank faces the refrigerant inlet header part And a second intermediate header portion provided on the windward side of the first intermediate header portion so as to face the refrigerant outlet header portion and integrated with the first intermediate header portion, and each header portion of both header tanks In between, a heat exchange tube group consisting of a plurality of heat exchange tubes arranged at intervals in the length direction of both header tanks is provided, and each of the heat exchange tubes of each heat exchange tube group is provided. Both upper and lower end portions are connected to each header portion of the first header tank and each header portion of the second header tank, a refrigerant inlet is provided at one end portion of the refrigerant inlet header portion, and the other end is closed, and a refrigerant outlet header portion A refrigerant outlet is provided at the same end as the refrigerant inlet and the other end is closed. The refrigerant inlet header is partitioned into first and second spaces arranged vertically by a partition, and the refrigerant inlet is the first. While communicating with the space, the heat exchange pipe faces the second space, and a communication port is formed in the closed end portion of the refrigerant inlet header portion in the partition portion to allow the first space and the second space to pass through. With refrigerant An evaporator that is adapted to flow into the heat exchange pipe after the refrigerant flowing into the refrigerant inlet header from the first space enters the second space by making a U-turn so as to change the flow direction through the communication port. Proposed (see Patent Document 1).

しかしながら、本発明者等が種々検討した結果、特許文献1記載のエバポレータにおいては、次のような問題が生じることを見出した。   However, as a result of various studies by the present inventors, it has been found that the following problems occur in the evaporator described in Patent Document 1.

すなわち、特許文献1記載のエバポレータにおいては、当該エバポレータを備えたカーエアコンの冷媒流量が多くなった場合に、冷媒入口ヘッダ部内において、連通口を通って第1空間から第2空間に流入した冷媒の流速が連通口の近傍において極めて速くなるので、冷媒が連通口の近傍の熱交換管内に流入しにくくなり、その結果冷媒入口ヘッダ部に接続された全熱交換管への冷媒の分布が不均一になる。したがって、エバポレータを通過してきた空気の温度である吐気温が、連通口が形成された側の端部において不均一になり、エバポレータの全幅に対する吐気温の均一化が不十分になる場合が生じることを見出した。   That is, in the evaporator described in Patent Document 1, when the refrigerant flow rate of the car air conditioner including the evaporator increases, the refrigerant that has flowed into the second space from the first space through the communication port in the refrigerant inlet header portion. The flow rate of the refrigerant becomes extremely fast in the vicinity of the communication port, so that it becomes difficult for the refrigerant to flow into the heat exchange pipe near the communication port, and as a result, the distribution of the refrigerant to the total heat exchange pipe connected to the refrigerant inlet header is not good. It becomes uniform. Therefore, the discharge temperature that is the temperature of the air that has passed through the evaporator becomes non-uniform at the end on the side where the communication port is formed, and the uniformity of the discharge temperature for the entire width of the evaporator may be insufficient. I found.

特開2008−298319号公報JP 2008-298319 A

この発明の目的は、上記問題を解決し、エバポレータとして用いた場合、吐気温のさらなる均一化を図りうる熱交換器を提供することにある。   An object of the present invention is to provide a heat exchanger that can solve the above-described problems and can achieve a more uniform discharge temperature when used as an evaporator.

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)一端部に冷媒入口を有するとともに他端部が閉鎖された冷媒入口ヘッダ部と、長さ方向を上下方向に向けるとともに冷媒入口ヘッダ部の長さ方向に間隔をおいて配置され、かつ冷媒入口ヘッダ部に接続された複数の熱交換管とを備えており、冷媒入口ヘッダ部内が、仕切部によって上下に並んだ第1および第2の空間に区画され、冷媒入口が第1空間内に通じるとともに、第2空間内に熱交換管が臨むようになされており、冷媒が、仕切部における冷媒入口ヘッダ部の閉鎖端部側の部分に形成された連通部を通って第1空間から第2空間に流入するようになされている熱交換器において、
冷媒入口ヘッダ部内の仕切部における第2空間に臨む下面の連通部よりも冷媒入口側の部分に、熱交換器側に突出した凸部と、これと反対側に凹んだ凹部とが、冷媒入口ヘッダ部の長さ方向に並んで交互に設けられている熱交換器。
1) a refrigerant inlet header portion having a refrigerant inlet at one end and the other end closed; and a refrigerant in which the length direction is directed vertically and the refrigerant inlet header portion is spaced apart in the length direction A plurality of heat exchange pipes connected to the inlet header, the refrigerant inlet header is partitioned into first and second spaces arranged vertically by a partition, and the refrigerant inlet is in the first space. And the heat exchange tube faces the second space, and the refrigerant passes through the communication portion formed in the closed end side portion of the refrigerant inlet header portion in the partition portion from the first space. In a heat exchanger designed to flow into two spaces,
A convex portion projecting toward the heat exchanger and a concave portion recessed on the opposite side are formed in the refrigerant inlet side portion of the partition portion in the refrigerant inlet header portion on the refrigerant inlet side with respect to the communicating portion on the lower surface facing the second space. A heat exchanger provided alternately along the length of the header.

2)上記連通部が、冷媒入口ヘッダ部の閉鎖端部に位置する熱交換管よりも上記閉鎖端部側において仕切部に形成され、冷媒入口ヘッダ部内の仕切部下面の凸部および凹部が設けられている範囲内に、冷媒入口ヘッダ部の閉鎖端部に位置する熱交換管を含んで少なくとも3つの熱交換管が配置されている上記1)記載の熱交換器。   2) The communication part is formed in the partition part on the closed end side of the heat exchange pipe located at the closed end part of the refrigerant inlet header part, and a convex part and a concave part on the lower surface of the partition part in the refrigerant inlet header part are provided. The heat exchanger as described in 1) above, wherein at least three heat exchange tubes are arranged including a heat exchange tube located at a closed end portion of the refrigerant inlet header portion within a range.

3)仕切部の凸部が、冷媒入口ヘッダ部の長さ方向に隣り合う熱交換管どうしの間に設けられ、同じく凹部が熱交換管と対応する位置に設けられている上記1)または2)記載の熱交換器。   3) The above 1) or 2 in which the convex part of the partition part is provided between the heat exchange pipes adjacent to each other in the length direction of the refrigerant inlet header part, and the concave part is also provided at a position corresponding to the heat exchange pipe. ) The heat exchanger described.

4)冷媒入口ヘッダ部が、熱交換管が接続された第1部材と、第1部材の上側を覆う第2部材と、第1部材と第2部材との間に配置されて第1および第2部材にろう付され、かつ冷媒入口ヘッダ部内を第1および第2の空間に区画する仕切部を有する第3部材とを備えており、第3部材を変形させることにより、第3部材の仕切部下面に凸部および凹部が設けられている上記1)〜3)のうちのいずれかに記載の熱交換器。   4) The refrigerant inlet header is disposed between the first member to which the heat exchange pipe is connected, the second member that covers the upper side of the first member, and the first member and the second member. A third member having a partition portion brazed to the two members and partitioning the refrigerant inlet header portion into first and second spaces, and the third member is deformed to deform the third member. 4. The heat exchanger according to any one of 1) to 3), wherein a convex portion and a concave portion are provided on the lower surface of the portion.

5)冷媒入口ヘッダ部の風上側に冷媒出口ヘッダ部が一体に設けられ、冷媒出口ヘッダ部に、長さ方向を上下方向に向けるとともに冷媒出口ヘッダ部の長さ方向に間隔をおいて配置された複数の熱交換管が接続されており、冷媒出口ヘッダ部の一端部に冷媒出口が設けられるとともに他端部が閉鎖され、冷媒出口ヘッダ部内が、仕切部によって上下に並んだ第1および第2の空間に区画され、当該仕切部に第1および第2空間を通じさせる冷媒通過穴が形成され、冷媒出口が第1空間内に通じるとともに、第2空間内に熱交換管が臨むようになされ、
冷媒入口ヘッダ部および冷媒出口ヘッダ部が1つのヘッダタンクに設けられており、当該ヘッダタンクが、熱交換管が接続された第1部材と、第1部材の上側を覆う第2部材と、第1部材と第2部材との間に配置されて第1および第2部材にろう付された第3部材と、第1部材、第2部材および第3部材の両端にろう付されたエンド部材とよりなり、第1および第2部材に、それぞれ冷媒入口ヘッダ部および冷媒出口ヘッダ部を形成するヘッダ形成部が設けられ、第3部材に、冷媒入口ヘッダ部内および冷媒出口ヘッダ部内をそれぞれ第1および第2空間に区画する2つの仕切部が設けられ、いずれか一方のエンド部材に冷媒入口および冷媒出口が形成され、第3部材を変形させることにより第3部材の両仕切部下面に凸部および凹部が設けられている上記1)〜3)のうちのいずれかに記載の熱交換器。
5) A refrigerant outlet header portion is integrally provided on the windward side of the refrigerant inlet header portion, and the refrigerant outlet header portion is disposed with an interval in the length direction of the refrigerant outlet header portion with the length direction directed in the vertical direction. A plurality of heat exchange pipes are connected, a refrigerant outlet is provided at one end of the refrigerant outlet header portion, the other end portion is closed, and the inside of the refrigerant outlet header portion is vertically aligned by a partition portion. A refrigerant passage hole that is partitioned into two spaces and that allows the first and second spaces to pass through the partition is formed, the refrigerant outlet communicates with the first space, and the heat exchange tube faces the second space. ,
The refrigerant inlet header portion and the refrigerant outlet header portion are provided in one header tank, and the header tank includes a first member to which the heat exchange pipe is connected, a second member that covers the upper side of the first member, A third member disposed between the first member and the second member and brazed to the first and second members; an end member brazed to both ends of the first member, the second member and the third member; The first and second members are provided with header forming portions that form the refrigerant inlet header portion and the refrigerant outlet header portion, respectively, and the third member has the first and second portions inside the refrigerant inlet header portion and the refrigerant outlet header portion, respectively. Two partition portions that divide into the second space are provided, a refrigerant inlet and a refrigerant outlet are formed in one of the end members, and a convex portion and a bottom surface of both partition portions of the third member are deformed by deforming the third member. Recessed A heat exchanger according to any one of the above 1) to 3) being.

上記1)〜5)の熱交換器によれば、冷媒入口ヘッダ部内の仕切部における第2空間に臨む下面の連通部よりも冷媒入口側の部分に、熱交換器側に突出した凸部と、これと反対側に凹んだ凹部とが、冷媒入口ヘッダ部の長さ方向に並んで交互に設けられているので、連通部を通って第1空間から第2空間に流入した冷媒は、凸部および凹部の働きによって、上下に蛇行状に流れながら冷媒入口が形成された側に流れることになる。その結果、冷媒入口ヘッダ部において、連通部を通って第1空間から第2空間に流入した冷媒の流速が低下させられることになり、連通部の近傍の熱交換管内にも流入しやすくなって、冷媒入口ヘッダ部に接続された全熱交換管への冷媒の分布が均一化される。したがって、上記1)〜5)の熱交換器を適用したエバポレータを備えたカーエアコンの冷媒流量が多くなった場合であっても、冷媒は、冷媒入口とは反対側の端部に位置する複数の熱交換管内にも流入し易くなり、エバポレータを通過してきた空気の温度である吐気温が冷媒入口とは反対側の端部においても均一化され、吐気温のさらなる均一化を図ることが可能になる。   According to the heat exchangers 1) to 5) described above, a convex portion protruding toward the heat exchanger is provided at a portion closer to the refrigerant inlet than a communicating portion on the lower surface facing the second space in the partition portion in the refrigerant inlet header portion. Since the recesses recessed on the opposite side are alternately arranged in the length direction of the refrigerant inlet header portion, the refrigerant flowing into the second space from the first space through the communication portion is convex. By the action of the part and the concave part, it flows to the side where the refrigerant inlet is formed while flowing in a serpentine shape up and down. As a result, in the refrigerant inlet header, the flow rate of the refrigerant that has flowed from the first space into the second space through the communication portion is reduced, and it is easy to flow into the heat exchange pipe near the communication portion. The distribution of the refrigerant to the total heat exchange pipe connected to the refrigerant inlet header is made uniform. Therefore, even when the refrigerant flow rate of the car air conditioner including the evaporator to which the heat exchangers 1) to 5) described above is increased, the refrigerant is a plurality of refrigerants positioned at the end opposite to the refrigerant inlet. The air discharge temperature, which is the temperature of the air that has passed through the evaporator, is made uniform even at the end opposite to the refrigerant inlet, so that the air discharge temperature can be made even more uniform. become.

上記3)の熱交換器によれば、冷媒入口ヘッダ部において、連通部を通って第1空間から第2空間に流入した冷媒が、各熱交換管内に流入しやすくなり、冷媒入口ヘッダ部に接続された全熱交換管への冷媒の分布が一層均一化される。   According to the heat exchanger of the above 3), in the refrigerant inlet header part, the refrigerant that has flowed from the first space into the second space through the communication part can easily flow into each heat exchange pipe, and the refrigerant inlet header part The distribution of the refrigerant to the connected total heat exchange pipe is made more uniform.

上記5)の熱交換器によれば、冷媒入口ヘッダ部および冷媒出口ヘッダ部を比較的簡単に製造することができる。   According to the heat exchanger of 5) above, the refrigerant inlet header part and the refrigerant outlet header part can be manufactured relatively easily.

この発明の熱交換器を適用した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。1 is a partially cutaway perspective view showing an overall configuration of an evaporator to which a heat exchanger according to the present invention is applied. 図1のエバポレータの後方から見た一部を省略した垂直断面図である。It is the vertical sectional view which abbreviate | omitted one part seen from the back of the evaporator of FIG. 一部を省略した図2のA−A線拡大断面図である。It is the AA line expanded sectional view of Drawing 2 which omitted some. 図2のB−B線断面図である。FIG. 3 is a sectional view taken along line B-B in FIG. 2. 図1のエバポレータの第1ヘッダタンクの分解斜視図である。It is a disassembled perspective view of the 1st header tank of the evaporator of FIG. 図2の部分拡大図である。FIG. 3 is a partially enlarged view of FIG. 2. 図1のエバポレータの第2ヘッダタンクの分解斜視図である。It is a disassembled perspective view of the 2nd header tank of the evaporator of FIG. 図2のC−C線断面図である。It is CC sectional view taken on the line of FIG.

以下、この発明の実施形態を、図面を参照して説明する。この実施形態は、この発明による熱交換器を、カーエアコンのエバポレータに適用したものである。   Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the heat exchanger according to the present invention is applied to an evaporator of a car air conditioner.

以下の説明において、隣接する熱交換管どうしの間の通風間隙を流れる空気の下流側(図1、図3、図4および図8に矢印Xで示す方向)を前、これと反対側を後といい、図2の左右を左右というものとする。   In the following description, the downstream side of the air flowing in the ventilation gap between adjacent heat exchange tubes (the direction indicated by the arrow X in FIGS. 1, 3, 4 and 8) is the front, and the opposite side is the rear. 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はエバポレータの全体構成を示し、図2〜図8はエバポレータの要部の構成を示す。   FIG. 1 shows the overall configuration of the evaporator, and FIGS. 2 to 8 show the configuration of the main part of the evaporator.

図1〜図4および図8において、エバポレータ(1)は、上下方向に間隔をおいて配置されかつ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。   1 to 4 and 8, the evaporator (1) includes an aluminum first header tank (2) and an aluminum second header tank (3) which are arranged in the vertical direction and extend in the horizontal 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)に位置しかつ左右方向にのびる冷媒入口ヘッダ部(5)と、後側(通風方向上流側)に位置しかつ左右方向にのびる冷媒出口ヘッダ部(6)と、両ヘッダ部(5)(6)を相互に連結一体化する連結部(7)とを備えている。第1ヘッダタンク(2)の冷媒入口ヘッダ部(5)は右端部に冷媒入口(8)を有するとともに左端部が閉鎖され、同じく冷媒出口ヘッダ部(6)は右端部に冷媒出口(9)を有するとともに左端部が閉鎖されており、第1ヘッダタンク(2)の冷媒入口ヘッダ部(5)にアルミニウム製冷媒入口管(11)が冷媒入口(8)に通じるように接続され、同じく冷媒出口ヘッダ部(6)にアルミニウム製冷媒出口管(12)が冷媒出口(9)に通じるように接続されている。第2ヘッダタンク(3)は、前側に位置しかつ左右方向にのびる第1中間ヘッダ部(13)と、後側に位置しかつ左右方向にのびる第2中間ヘッダ部(14)と、両ヘッダ部(13)(14)を相互に連結一体化する連結部(15)とを備えている。   The first header tank (2) is located on the front side (downstream side in the ventilation direction) and extends in the left-right direction, and the refrigerant inlet header portion (5) extends on the rear side (upstream side in the ventilation direction) and extends in the left-right direction. The outlet header portion (6) and the connecting portion (7) for connecting and integrating the header portions (5) and (6) to each other are provided. The refrigerant inlet header part (5) of the first header tank (2) has a refrigerant inlet (8) at the right end and is closed at the left end. Similarly, the refrigerant outlet header part (6) is at the refrigerant outlet (9) at the right end. And the left end is closed, and an aluminum refrigerant inlet pipe (11) is connected to the refrigerant inlet header (5) of the first header tank (2) so as to communicate with the refrigerant inlet (8). An aluminum refrigerant outlet pipe (12) is connected to the outlet header (6) so as to communicate with the refrigerant outlet (9). The second header tank (3) includes a first intermediate header portion (13) located on the front side and extending in the left-right direction; a second intermediate header portion (14) located on the rear side and extending in the left-right direction; A connecting portion (15) for connecting and integrating the portions (13) and (14) to each other;

熱交換コア部(4)は、左右方向に間隔をおいて並列状に配置された複数の熱交換管(16)からなる熱交換管群(17)が、前後方向に並んで複数列、ここでは2列配置され、各熱交換管群(17)の隣接する熱交換管(16)どうしの間の通風間隙、および各熱交換管群(17)の左右両端の熱交換管(16)の外側にそれぞれコルゲートフィン(18)が配置されて熱交換管(16)にろう付され、さらに左右両端のコルゲートフィン(18)の外側にそれぞれ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)にろう付されることにより構成されている。そして、前側熱交換管群(17)の熱交換管(16)の上下両端は冷媒入口ヘッダ部(5)および第1中間ヘッダ部(13)に接続され、後側熱交換管群(17)の熱交換管(16)の上下両端部は冷媒出口ヘッダ部(6)および第2中間ヘッダ部(14)に接続されている。   The heat exchange core section (4) is composed of a plurality of heat exchange pipe groups (17) composed of a plurality of heat exchange pipes (16) arranged in parallel at intervals in the left-right direction. Are arranged in two rows, the ventilation gap between adjacent heat exchange tubes (16) of each heat exchange tube group (17), and the heat exchange tubes (16) at the left and right ends of each heat exchange tube group (17). Corrugated fins (18) are arranged on the outside and brazed to the heat exchange pipe (16), and aluminum side plates (19) are arranged on the outer sides of the corrugated fins (18) on both the left and right ends, respectively. It is configured by brazing to 18). The upper and lower ends of the heat exchange pipe (16) of the front heat exchange pipe group (17) are connected to the refrigerant inlet header part (5) and the first intermediate header part (13), and the rear heat exchange pipe group (17). The upper and lower ends of the heat exchange pipe (16) are connected to the refrigerant outlet header (6) and the second intermediate header (14).

熱交換管(16)はアルミニウム押出形材で形成されたベア材からなり、幅方向を前後方向に向けて配置されるとともに幅方向に並んだ複数の冷媒通路を有する扁平状である。コルゲートフィン(18)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を用いて波状に形成されたものであり、波頂部、波底部および波頂部と波底部とを連結する水平状連結部よりなり、連結部に複数のルーバが前後方向に並んで形成されている。コルゲートフィン(18)は、前後の熱交換管群(17)を構成する前後両熱交換管(16)に共有されており、その前後方向の幅は前側熱交換管(16)の前側縁と後側熱交換管(16)の後側縁との間隔をほぼ等しくなっている。そして、コルゲートフィン(18)の波頂部および波底部は、前後の熱交換管(16)にろう付されている。コルゲートフィン(18)の前側縁は前側熱交換管(16)の前側縁よりも若干前方に突出している。なお、1つのコルゲートフィン(18)が前後両熱交換管群(17)に共有される代わりに、両熱交換管群(17)の隣り合う熱交換管(16)どうしの間にそれぞれコルゲートフィンが配置されていてもよい。   The heat exchange pipe (16) is made of a bare material formed of an aluminum extruded profile, and has a flat shape having a plurality of refrigerant passages arranged in the width direction and arranged in the width direction in the front-rear direction. The corrugated fin (18) is formed in a wave shape using an aluminum brazing sheet having a brazing filler metal layer on both sides, and is composed of a wave-like portion, a wave-bottom portion, and a horizontal connecting portion that connects the wave-top portion and the wave-bottom portion, A plurality of louvers are formed in the connecting portion side by side in the front-rear direction. The corrugated fin (18) is shared by the front and rear heat exchange tubes (16) constituting the front and rear heat exchange tube group (17), and the width in the front and rear direction is the same as that of the front edge of the front heat exchange tube (16). The distance from the rear edge of the rear heat exchange pipe (16) is substantially equal. The wave crest and wave bottom of the corrugated fin (18) are brazed to the front and rear heat exchange tubes (16). The front edge of the corrugated fin (18) protrudes slightly forward from the front edge of the front heat exchange pipe (16). In addition, instead of one corrugated fin (18) being shared by both the front and rear heat exchange tube groups (17), each corrugated fin is disposed between adjacent heat exchange tubes (16) of both heat exchange tube groups (17). May be arranged.

第1ヘッダタンク(2)は、両面にろう材層を有するアルミニウムブレージングシートにプレス加工を施すことにより形成されかつすべての熱交換管(4)が接続されたプレート状の第1部材(21)と、両面にろう材層を有するアルミニウムブレージングシートにプレス加工を施すことにより形成されかつ第1部材(21)の上側を覆う第2部材(22)と、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またはアルミニウムベア材にプレス加工を施すことにより形成されかつ第1部材(21)と第2部材(22)との間に配置されて両部材(21)(22)にろう付された第3部材(23)と、両面にろう材層を有するアルミニウムブレージングシートにプレス加工を施すことにより形成されかつ第1部材(21)、第2部材(22)および第3部材(23)の左右両端にろう付されたアルミニウム製左右両エンド部材(24)(25)と、右エンド部材(25)の外面に、冷媒入口ヘッダ部(5)および冷媒出口ヘッダ部(6)に跨るようにろう付された前後方向に長いアルミニウム製のジョイントプレート(26)とよりなり、ジョイントプレート(26)に、冷媒入口管(11)および冷媒出口管(12)が接続されている。なお、ジョイントプレート(26)は、アルミニウムベア材にプレス加工を施すことにより形成されている。   The first header tank (2) is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and a plate-shaped first member (21) to which all heat exchange tubes (4) are connected. A second member (22) formed by pressing an aluminum brazing sheet having a brazing material layer on both sides and covering the upper side of the first member (21); and an aluminum brazing sheet having a brazing material layer on both sides Alternatively, a third member formed by pressing aluminum bare material and disposed between the first member (21) and the second member (22) and brazed to both members (21) (22). (23) and a brazing material formed on the both sides of the first member (21), the second member (22) and the third member (23) by pressing an aluminum brazing sheet having a brazing material layer on both sides. Attached aluminum Long aluminum in the front-rear direction brazed to straddle the refrigerant inlet header (5) and the refrigerant outlet header (6) on the outer surfaces of the left and right end members (24) (25) and the right end member (25) The refrigerant inlet pipe (11) and the refrigerant outlet pipe (12) are connected to the joint plate (26). The joint plate (26) is formed by pressing a bare aluminum material.

図2〜図6に示すように、第1部材(21)は、冷媒入口ヘッダ部(5)および冷媒出口ヘッダ部(6)の下部を形成する下方膨出状の前後両ヘッダ形成部(27)(28)と、前後両ヘッダ形成部(27)(28)どうしを一体に連結しかつ連結部(7)の下部を形成する連結壁(29)とよりなる。第1部材(21)の両ヘッダ形成部(27)(28)に、それぞれ前後方向に長い複数の管挿通穴(31)が、左右方向に間隔をおきかつ左右方向に関して同一位置に来るように形成されている。そして、熱交換管(16)の上端部が管挿通穴(31)に挿入されて第1部材(21)のろう材層を利用して第1部材(21)にろう付されている。   As shown in FIGS. 2 to 6, the first member (21) includes a front and rear header forming portion (27) that bulges downward and forms lower portions of the refrigerant inlet header portion (5) and the refrigerant outlet header portion (6). ) (28) and a connecting wall (29) for connecting the front and rear header forming portions (27) and (28) together and forming the lower portion of the connecting portion (7). A plurality of pipe insertion holes (31) that are long in the front-rear direction are arranged in both header forming portions (27), (28) of the first member (21) at intervals in the left-right direction and at the same position in the left-right direction. Is formed. The upper end portion of the heat exchange pipe (16) is inserted into the pipe insertion hole (31) and brazed to the first member (21) using the brazing material layer of the first member (21).

第2部材(22)は、冷媒入口ヘッダ部(5)および冷媒出口ヘッダ部(6)の上部を形成する上方膨出状の前後両ヘッダ形成部(32)(33)と、前後両ヘッダ形成部(32)(33)どうしを一体に連結しかつ連結部(7)の上部を形成する連結壁(34)とよりなる。   The second member (22) includes upper and lower front and rear header forming portions (32) and (33) forming upper portions of the refrigerant inlet header portion (5) and the refrigerant outlet header portion (6), and front and rear header formation. The parts (32) and (33) are integrally connected to each other and are formed with a connecting wall (34) that forms the upper part of the connecting part (7).

第3部材(23)は、冷媒入口ヘッダ部(5)内を上下に並んだ第1の空間(35)および第2の空間(36)に区画する板状の前側仕切部(37)と、冷媒出口ヘッダ部(6)内を上下に並んだ第1の空間(38)および第2の空間(39)に区画する板状の後側仕切部(41)と、両仕切部(37)(41)を一体に連結しかつ連結部(7)の上下方向の中間部を形成する連結壁(42)とよりなる。冷媒入口ヘッダ部(5)の冷媒入口(8)が第1空間(35)内に通じるとともに、第2空間(36)内に前側熱交換管群(17)の熱交換管(16)が臨むようになされており、第1空間(35)内に冷媒入口(8)を通して冷媒が流入し、第2空間(36)から熱交換管(16)内に冷媒が流入する。冷媒出口ヘッダ部(6)の冷媒出口(9)が第1空間(38)に通じるとともに、第2空間(39)内に後側熱交換管群(17)の熱交換管(16)が臨むようになされており、第1空間(38)内から冷媒出口(9)を通して冷媒が流出し、第2空間(39)内に熱交換管(16)から冷媒が流入する。   The third member (23) includes a plate-shaped front partition (37) that divides the refrigerant inlet header (5) into a first space (35) and a second space (36) arranged vertically. A plate-like rear partition (41) that partitions the refrigerant outlet header (6) into a first space (38) and a second space (39) arranged vertically, and both partitions (37) ( 41) and a connecting wall (42) that forms an intermediate portion in the vertical direction of the connecting portion (7). The refrigerant inlet (8) of the refrigerant inlet header (5) communicates with the first space (35), and the heat exchange pipe (16) of the front heat exchange pipe group (17) faces the second space (36). The refrigerant flows into the first space (35) through the refrigerant inlet (8), and the refrigerant flows from the second space (36) into the heat exchange pipe (16). The refrigerant outlet (9) of the refrigerant outlet header (6) communicates with the first space (38), and the heat exchange pipe (16) of the rear heat exchange pipe group (17) faces the second space (39). The refrigerant flows out from the first space (38) through the refrigerant outlet (9), and the refrigerant flows from the heat exchange pipe (16) into the second space (39).

第3部材(23)の前側仕切部(37)および後側仕切部(41)の下面には、下方に突出した凸部(45)と上方に凹んだ凹部(46)とが左右方向に交互に並んで設けられている。冷媒入口ヘッダ部(5)内の前側仕切部(37)下面の凸部(45)および凹部(46)が設けられている範囲内に、冷媒入口ヘッダ部(5)の閉鎖端部、すなわち左端部に位置する熱交換管(16)を含んで少なくとも3つの熱交換管(16)、ここではすべての熱交換管(16)が配置されている。凸部(45)は、左右方向に隣り合う熱交換管(16)どうしの間に形成され、凹部(46)は各熱交換管(16)と対応する位置、すなわち各熱交換管(16)の上方に形成されている。前側仕切部(37)および後側仕切部(41)の下面の凸部(45)および凹部(46)は、前側仕切部(37)および後側仕切部(41)を変形させることによって、前後方向に長い方形状でありかつ下方に膨出した膨出部(47)を左右方向に間隔をおいて複数形成することにより設けられている。なお、凸部(45)および凹部(46)は、前側仕切部(37)および後側仕切部(41)を変形させることによって、前後方向に長い方形状である上方膨出部を左右方向に間隔をおいて複数形成することにより設けられていてもよい。   On the lower surface of the front partition part (37) and the rear partition part (41) of the third member (23), a convex part (45) projecting downward and a concave part (46) concave upward are alternately arranged in the left-right direction. It is provided side by side. The closed end of the refrigerant inlet header (5), that is, the left end within the range where the convex part (45) and the concave part (46) on the lower surface of the front partition (37) in the refrigerant inlet header (5) are provided. At least three heat exchange pipes (16) including the heat exchange pipe (16) located in the section, here, all the heat exchange pipes (16) are arranged. The convex portion (45) is formed between the heat exchange tubes (16) adjacent in the left-right direction, and the concave portion (46) corresponds to each heat exchange tube (16), that is, each heat exchange tube (16). Is formed above. The convex part (45) and the concave part (46) on the lower surface of the front partition part (37) and the rear partition part (41) are deformed by changing the front partition part (37) and the rear partition part (41). It is provided by forming a plurality of bulging portions (47) that are long in the direction and bulge downward at intervals in the left-right direction. The convex part (45) and the concave part (46) are formed by deforming the front partition part (37) and the rear partition part (41) so that the upward bulging part, which has a long rectangular shape in the front-rear direction, extends in the left-right direction. It may be provided by forming a plurality at intervals.

第3部材(23)の前側仕切部(37)の左端部(冷媒入口ヘッダ部(5)の閉鎖端部側の部分)における左端部に配置された熱交換管(15)よりも左側の部分には、平面から見て前後方向に長くかつ冷媒入口ヘッダ部(5)内の2つの空間(35)(36)を通じさせる方形状の連通口(48)(連通部)が形成されている。前側仕切部(37)における連通口(48)の左側縁部に、第2空間(36)側に突出し、かつ冷媒を右側に案内するガイド部(49)が一体に形成されている。図6に示すように、ガイド部(49)は、下側に向かって右側(冷媒入口(8)側)に傾斜した案内用の傾斜部(49a)と、傾斜部(49a)の先端に連なって右側にのびる水平部(49b)と、前側仕切部(37)における連通口(48)の前後両側縁部に、下方に向かって前後方向内方に傾斜するように一体に形成され、かつ傾斜部(49a)および水平部(49b)の前後両側縁部を前側仕切部(37)に連結する連結部(49c)とよりなる。ガイド部(49)の水平部(49b)の先端(右端)は、第3部材(23)の前側仕切部(37)に形成された連通口(48)の右側縁のほぼ真下に位置している。なお、ここでは、ガイド部(49)の水平部(49b)の上面は、熱交換管(16)の上端とほぼ同一高さ位置にある。また、第3部材(23)の前側仕切部(37)の前後方向の中央部でかつ左右方向の中央部および左右両側部分には、円形冷媒通過穴(51)が形成されている。円形冷媒通過穴(51)は下方膨出部(47)の底壁に形成されている。なお、左側部分の円形冷媒通過穴(51)は他の円形冷媒通過穴(51)よりも大きくなっている。   A portion on the left side of the heat exchange pipe (15) arranged at the left end of the left end of the front partition (37) of the third member (23) (the portion on the closed end of the refrigerant inlet header (5)) Is formed with a rectangular communication port (48) (communication portion) that is long in the front-rear direction when viewed from the plane and allows the two spaces (35) and (36) in the refrigerant inlet header portion (5) to pass therethrough. A guide portion (49) that protrudes toward the second space (36) and guides the refrigerant to the right side is integrally formed at the left edge portion of the communication port (48) in the front partitioning portion (37). As shown in FIG. 6, the guide portion (49) is connected to the guide inclined portion (49a) inclined downward on the right side (the refrigerant inlet (8) side) and the tip of the inclined portion (49a). The horizontal part (49b) extending to the right side and the front and rear side edges of the communication port (48) in the front partition part (37) are integrally formed and inclined so as to incline in the front-rear direction downward. It comprises a connecting part (49c) for connecting the front and rear side edges of the part (49a) and the horizontal part (49b) to the front partition part (37). The tip (right end) of the horizontal portion (49b) of the guide portion (49) is located almost directly below the right edge of the communication port (48) formed in the front partition portion (37) of the third member (23). Yes. Here, the upper surface of the horizontal portion (49b) of the guide portion (49) is substantially at the same height as the upper end of the heat exchange tube (16). In addition, a circular refrigerant passage hole (51) is formed in the front-rear direction center portion of the third member (23) in the front-rear direction, the left-right direction center portion, and the left and right side portions. The circular coolant passage hole (51) is formed in the bottom wall of the downward bulge portion (47). Note that the circular refrigerant passage hole (51) on the left side is larger than the other circular refrigerant passage holes (51).

第3部材(23)の後側仕切部(41)の後側部分における左右両端寄りの部分を除いた部分には、冷媒出口ヘッダ部(6)の第1空間(38)と第2空間(39)とを通じさせる複数の方形冷媒通過穴(52)が、左右方向に間隔をおいて形成されている。方形冷媒通過穴(52)は、下方膨出部(47)の底壁に形成されている。   In the rear part of the rear partitioning part (41) of the third member (23) except for the parts near the left and right ends, the first space (38) and the second space (38) of the refrigerant outlet header part (6) are provided. 39), a plurality of rectangular refrigerant passage holes (52) are formed at intervals in the left-right direction. The rectangular refrigerant passage hole (52) is formed in the bottom wall of the downward bulge portion (47).

そして、第1部材(21)および第2部材(22)の前側ヘッダ形成部(27)(32)と第3部材(23)の前側仕切部(37)とにより両端が開口した入口ヘッダ部本体(5A)が形成され、第1部材(21)および第2部材(22)の後側ヘッダ形成部(28)(33)と、第3部材(23)の後側仕切部(41)とにより両端が開口した出口ヘッダ部本体(6A)が形成されている。すなわち、入口ヘッダ部本体(5A)の前側ヘッダ形成部(27)(32)および前側仕切部(37)と、出口ヘッダ部本体(6A)の後側ヘッダ形成部(28)(33)および後側仕切部(41)とはそれぞれ一体化されている。   And the inlet header main body which both ends opened by the front header formation part (27) (32) of the 1st member (21) and the 2nd member (22), and the front partition part (37) of the 3rd member (23) (5A) is formed by the rear header forming portions (28), (33) of the first member (21) and the second member (22) and the rear partition portion (41) of the third member (23). An outlet header main body (6A) having both ends opened is formed. That is, the front header forming portions (27) and (32) and the front partitioning portion (37) of the inlet header body (5A), and the rear header forming portions (28) and (33) and the rear header portion (6A) Each of the side partition portions (41) is integrated.

左エンド部材(24)は、入口ヘッダ部本体(5A)の左端開口を閉鎖する前キャップ(24a)と、出口ヘッダ部本体(6A)の左端開口を閉鎖する後キャップ(24b)とを有している。左エンド部材(24)の前キャップ(24a)に、第1空間(35)内に嵌め入れられる突出部(53)および第2空間(36)内に嵌め入れられる突出部(54)が形成され、同じく後キャップ(24b)に、第1空間(38)内に嵌め入れられる突出部(55)および第2空間(39)内に嵌め入れられる突出部(56)が形成されている。   The left end member (24) has a front cap (24a) for closing the left end opening of the inlet header body (5A) and a rear cap (24b) for closing the left end opening of the outlet header body (6A). ing. The front cap (24a) of the left end member (24) is formed with a protrusion (53) that fits in the first space (35) and a protrusion (54) that fits in the second space (36). Similarly, the rear cap (24b) is formed with a protruding portion (55) fitted into the first space (38) and a protruding portion (56) fitted into the second space (39).

右エンド部材(25)は、入口ヘッダ部本体(5A)の右端開口を閉鎖する前キャップ(25a)と、出口ヘッダ部本体(6A)の右端開口を閉鎖する後キャップ(25b)とを有している。右エンド部材(25)の前キャップ(25a)に、第1空間(35)内に嵌め入れられる突出部(57)および第2空間(36)内に嵌め入れられる突出部(58)が形成され、同じく後キャップ(25b)に、第1空間(38)内に嵌め入れられる突出部(59)および第2空間(39)内に嵌め入れられる突出部(61)が形成されている。右エンド部材(25)における前キャップ(25a)の上側の突出部(57)の突出端壁に冷媒入口(8)が形成され、同じく後キャップ(25b)の上側の突出部(59)の突出端壁に冷媒出口(9)が形成されている。   The right end member (25) has a front cap (25a) for closing the right end opening of the inlet header body (5A), and a rear cap (25b) for closing the right end opening of the outlet header body (6A). ing. The front cap (25a) of the right end member (25) is formed with a protrusion (57) fitted into the first space (35) and a protrusion (58) fitted into the second space (36). Similarly, the rear cap (25b) is formed with a protrusion (59) that fits into the first space (38) and a protrusion (61) that fits into the second space (39). A refrigerant inlet (8) is formed in the protruding end wall of the upper protrusion (57) of the front cap (25a) in the right end member (25), and the protrusion of the upper protrusion (59) of the rear cap (25b) is also formed. A refrigerant outlet (9) is formed in the end wall.

ジョイントプレート(26)は、右エンド部材(25)の冷媒入口(8)に通じる冷媒流入部(62)および冷媒出口(9)に通じる冷媒流出部(63)を有している。ジョイントプレート(26)の冷媒流入部(62)に、冷媒入口管(11)の一端部が差し込まれてろう付され、同じく冷媒流出部(63)に、冷媒出口管(12)の一端部が差し込まれてろう付されている。   The joint plate (26) has a refrigerant inflow part (62) communicating with the refrigerant inlet (8) of the right end member (25) and a refrigerant outflow part (63) communicating with the refrigerant outlet (9). One end of the refrigerant inlet pipe (11) is inserted into the refrigerant inflow part (62) of the joint plate (26) and brazed, and similarly, one end of the refrigerant outlet pipe (12) is connected to the refrigerant outflow part (63). It is inserted and brazed.

第2ヘッダタンク(3)は、第1ヘッダタンクとほぼ同様な構成であるとともに、第1ヘッダタンク(2)とは上下逆向きに配置されたものであり、同一部分には同一符号を付す。   The second header tank (3) has substantially the same configuration as the first header tank, and is disposed upside down with respect to the first header tank (2). .

なお、第2ヘッダタンク(3)の第1部材(21)の両ヘッダ形成部(27)(28)は第1中間ヘッダ部(13)および第2中間ヘッダ部(14)の上部を形成し、第2部材(22)の両ヘッダ形成部(32)(33)は第1中間ヘッダ部(13)および第2中間ヘッダ部(14)の下部を形成する。第3部材(23)の前側仕切部(37)によって、第1中間ヘッダ部(13)内が、冷媒入口ヘッダ部(5)の第1空間(35)と同様な構成の第1空間(35)と、第1空間(35)の上側に位置し、かつ冷媒入口ヘッダ部(5)の第2空間(36)と同様な構成であるとともに前側熱交換管群(17)の熱交換管(16)が通じる第2空間(36)とに区画されている。また、第3部材(23)の後側仕切部(41)によって、第2中間ヘッダ部(14)内が、冷媒出口ヘッダ部(6)の第1空間(38)と同様な構成の第1空間(38)と、第1空間(38)の上側に位置し、かつ冷媒入口ヘッダ部(5)の第2空間(36)と同様な構成であるとともに後側熱交換管群(17)の熱交換管(16)が通じる第2空間(39)とに区画されている。さらに、第1〜第3部材(21)(22)(23)の連結壁(29)(34)(42)によって連結部(15)が形成されている。   In addition, the header forming portions (27) and (28) of the first member (21) of the second header tank (3) form the upper portions of the first intermediate header portion (13) and the second intermediate header portion (14). The header forming parts 32 and 33 of the second member 22 form the lower part of the first intermediate header part 13 and the second intermediate header part 14. The first partition (37) of the third member (23) has a first space (35) having the same configuration as the first space (35) of the refrigerant inlet header (5) in the first intermediate header (13). ) And the heat exchange pipes of the front heat exchange pipe group (17) (similar to the second space (36) of the refrigerant inlet header (5)) and located above the first space (35). 16) is divided into a second space (36). Also, the first partition having the same configuration as the first space (38) of the refrigerant outlet header (6) is formed in the second intermediate header (14) by the rear partition (41) of the third member (23). The space (38) is located on the upper side of the first space (38) and has the same configuration as that of the second space (36) of the refrigerant inlet header (5) and the rear heat exchange tube group (17). It is partitioned into a second space (39) through which the heat exchange pipe (16) communicates. Further, a connecting portion (15) is formed by the connecting walls (29), (34) and (42) of the first to third members (21), (22) and (23).

そして、第1部材(21)および第2部材(22)の前側ヘッダ形成部(27)(32)と第3部材(23)の前側仕切部(37)とにより両端が開口した第1中間ヘッダ部本体(13A)が形成され、第1部材(21)および第2部材(22)の後側ヘッダ形成部(28)(33)と、第3部材(23)の後側仕切部(41)とにより両端が開口した第2中間ヘッダ部本体(14A)が形成されている。すなわち、第1中間ヘッダ部本体(13A)の前側ヘッダ形成部(27)(32)および前側仕切部(37)と、第2中間ヘッダ部本体(14A)の後側ヘッダ形成部(28)(33)および後側仕切部(41)とはそれぞれ一体化されている。   And the 1st intermediate header which both ends opened by the front side header formation part (27) (32) of the 1st member (21) and the 2nd member (22), and the front side partition part (37) of the 3rd member (23) The main body (13A) is formed, the rear header forming portions (28), (33) of the first member (21) and the second member (22), and the rear partition portion (41) of the third member (23). Thus, the second intermediate header body (14A) having both ends opened is formed. That is, the front header forming portions (27) and (32) and the front partitioning portion (37) of the first intermediate header portion main body (13A) and the rear header forming portion (28) of the second intermediate header portion main body (14A) ( 33) and the rear partition (41) are integrated with each other.

また、右エンド部材(25)の冷媒入口(8)が、第1中間ヘッダ部(13)から冷媒が流出する冷媒流出口となり、同じく冷媒出口(9)が第1中間ヘッダ部(13)から流出した冷媒が第2中間ヘッダ部(14)内に流入する冷媒流入口となっている。   The refrigerant inlet (8) of the right end member (25) serves as a refrigerant outlet from which refrigerant flows out of the first intermediate header portion (13), and the refrigerant outlet (9) also extends from the first intermediate header portion (13). The refrigerant that has flowed out serves as a refrigerant inlet into which the second intermediate header portion (14) flows.

図2、図3、図7および図8に示すように、第2ヘッダタンク(3)の第1ヘッダタンク(2)との相違点は、次の通りである。   As shown in FIGS. 2, 3, 7 and 8, the second header tank (3) is different from the first header tank (2) as follows.

第1の相違点は、第3部材(23)の前側仕切部(37)に、連通口(48)、ガイド部(49)および円形冷媒通過穴(51)は形成されておらず、隣り合う膨出部(47)間および左右両端の膨出部(47)の左右方向外側に、それぞれ第1中間ヘッダ部(13)の上下両空間(35)(36)を通じさせる前後方向に長い連通穴(64)が形成されていることにある。   The first difference is that the front partitioning portion (37) of the third member (23) is not formed with the communication port (48), the guide portion (49), and the circular refrigerant passage hole (51), and is adjacent to each other. A long communication hole extending in the front-rear direction through the upper and lower spaces (35), (36) of the first intermediate header part (13) between the bulge parts (47) and outside of the left and right bulge parts (47). (64) is formed.

第2の相違点は、第3部材(23)の後側仕切部(41)に方形冷媒通過穴(52)は形成されておらず、全膨出部(47)のうちの一部の複数の膨出部(47)の底壁に円形連通穴(65)が貫通状に形成されていることにある。隣り合う円形連通穴(65)間の間隔は、右端部から遠ざかるにつれて徐々に大きくなっている。   The second difference is that a square refrigerant passage hole (52) is not formed in the rear partitioning portion (41) of the third member (23), and some of the plurality of bulging portions (47) The circular communication hole (65) is formed in the bottom wall of the bulging portion (47). The distance between adjacent circular communication holes (65) gradually increases as the distance from the right end increases.

第3の相違点は、右エンド部材(25)の後キャップ(25b)の下側の突出部(59)における冷媒流入口(9)の周縁部の下側部分に、第2中間ヘッダ部(14)内方に向かって上方に傾斜または湾曲、ここでは湾曲したガイド部(68)が一体に形成されていることである。ガイド部(68)は、第2中間ヘッダ部(14)の第1空間(38)内に流入する冷媒を、上側に案内する。   The third difference is that the second intermediate header portion (on the lower portion of the peripheral edge of the refrigerant inlet (9) in the lower protrusion (59) of the rear cap (25b) of the right end member (25) is formed. 14) A guide portion (68) that is inclined or curved upward inward, that is, curved here, is integrally formed. The guide part (68) guides the refrigerant flowing into the first space (38) of the second intermediate header part (14) upward.

第4の相違点は、右エンド部材(25)の上縁の前後方向中央部に、上方に突出した山形の突出部(71)が一体に形成されていることにある。   The fourth difference is that a chevron-shaped projecting portion (71) projecting upward is integrally formed at the center in the front-rear direction of the upper edge of the right end member (25).

第5の相違点は、右エンド部材(25)にはジョイントプレート(26)はろう付されておらず、右エンド部材(25)の外面に、第1中間ヘッダ部(13)内および第2中間ヘッダ部(14)を通じさせるアルミニウム製の連通部材(72)がろう付されていることにある。連通部材(72)には、右エンド部材(25)の冷媒流出口(8)と冷媒流入口(9)とを通じさせるように外方膨出部(73)が形成されている。外方膨出部(73)の内部が、右エンド部材(25)の冷媒流出口(8)と冷媒流入口(9)とを通じさせる連通路となっている。   The fifth difference is that the right end member (25) is not brazed with the joint plate (26), and the outer surface of the right end member (25) is arranged in the first intermediate header (13) and in the second end. The aluminum communicating member (72) to be passed through the intermediate header portion (14) is brazed. The communication member (72) is formed with an outward bulging portion (73) so as to pass through the refrigerant outlet (8) and the refrigerant inlet (9) of the right end member (25). The inside of the outward bulge portion (73) serves as a communication path through which the refrigerant outlet (8) and the refrigerant inlet (9) of the right end member (25) are passed.

上述したエバポレータ(1)は、入口管(11)および出口管(12)を除いたすべての部品が組み合わされて一括ろう付されることにより製造される。   The above-described evaporator (1) is manufactured by combining all parts except the inlet pipe (11) and the outlet pipe (12) and brazing them together.

エバポレータ(1)は、圧縮機および冷媒冷却器としてのコンデンサとともに、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車両、たとえば自動車に搭載される。   The evaporator (1) constitutes a refrigeration cycle using a chlorofluorocarbon refrigerant together with a compressor and a condenser as a refrigerant cooler, and is mounted on a vehicle such as an automobile as a car air conditioner.

上述したエバポレータ(1)においては、圧縮機のオン時には、圧縮機、コンデンサおよび膨張弁を通過した気液混相の2相冷媒は、冷媒入口管(11)からジョイントプレート(26)の冷媒流入部(62)を通り、右エンド部材(25)の冷媒入口(8)を経て冷媒入口ヘッダ部(5)の第1空間(35)内に入る。第1空間(35)内に入った冷媒は、第1空間(35)内を冷媒入口ヘッダ部(5)の長さ方向に流れ、連通口(48)を通って第2空間(36)内に流入するとともに、円形冷媒通過穴(51)を通って第2空間(36)内に流入し、分流して前側熱交換管群(17)の熱交換管(16)内に流入する。連通口(48)を通って第1空間(35)から第2空間(36)に流入した冷媒は、第3部材(23)の前側仕切部(37)下面の凸部(45)および凹部(46)の働きによって、上下に蛇行状に流れながら冷媒入口(8)が形成された右側に流れることになる。その結果、冷媒入口ヘッダ部(5)において、連通口(48)を通って第1空間(35)から第2空間(36)に流入した冷媒の流速が低下させられることになり、連通口(48)の近傍の熱交換管(16)内にも流入しやすくなって、冷媒入口ヘッダ部(5)に接続された全熱交換管(16)への冷媒の分布が均一化される。   In the evaporator (1) described above, when the compressor is turned on, the gas-liquid mixed-phase two-phase refrigerant that has passed through the compressor, the condenser, and the expansion valve flows from the refrigerant inlet pipe (11) to the refrigerant inflow portion of the joint plate (26). (62) passes through the refrigerant inlet (8) of the right end member (25) and enters the first space (35) of the refrigerant inlet header (5). The refrigerant that has entered the first space (35) flows in the first space (35) in the length direction of the refrigerant inlet header (5), passes through the communication port (48), and enters the second space (36). And flows into the second space (36) through the circular refrigerant passage hole (51), and is divided and flows into the heat exchange pipe (16) of the front heat exchange pipe group (17). The refrigerant that has flowed from the first space (35) into the second space (36) through the communication port (48) flows into the convex portions (45) and the concave portions (45) on the lower surface of the front partition (37) of the third member (23). By the action of 46), it flows to the right side where the refrigerant inlet (8) is formed while flowing in a meandering manner. As a result, in the refrigerant inlet header (5), the flow rate of the refrigerant flowing from the first space (35) into the second space (36) through the communication port (48) is reduced, and the communication port ( 48) easily flows into the heat exchange pipe (16) in the vicinity of 48), and the distribution of the refrigerant to the total heat exchange pipe (16) connected to the refrigerant inlet header (5) is made uniform.

熱交換管(16)内に流入した冷媒は、熱交換管(16)内を下方に流れて第2ヘッダタンク(3)の第1中間ヘッダ部(13)の第2空間(36)内に入る。第1中間ヘッダ部(13)の第2空間(36)内に入った冷媒は、第3部材(23)の前側仕切部(37)の連通穴(64)を通って第1空間(35)内に入り、第1空間(35)内を右方に流れ、右エンド部材(25)の前キャップ(25a)の冷媒流出口(8)、連通部材(72)の外方膨出部(73)内の連通路および後キャップ(25b)の冷媒流入口(9)を通ることにより、流れ方向を変えるようにターンして第2中間ヘッダ部(14)の第1空間(38)内に入る。   The refrigerant flowing into the heat exchange pipe (16) flows downward in the heat exchange pipe (16) and enters the second space (36) of the first intermediate header portion (13) of the second header tank (3). enter. The refrigerant that has entered the second space (36) of the first intermediate header portion (13) passes through the communication hole (64) of the front partitioning portion (37) of the third member (23), and thus the first space (35). The refrigerant flows into the first space (35) to the right, flows into the right end member (25), the refrigerant outlet (8) of the front cap (25a), and the outward bulge (73) of the communication member (72). ) And through the refrigerant inlet (9) of the rear cap (25b) to turn to change the flow direction and enter the first space (38) of the second intermediate header (14). .

第2中間ヘッダ部(14)の第1空間(38)内に入った冷媒は左方に流れ、第3部材(23)の後側仕切部(41)の円形連通穴(65)を通って第2空間(39)内に入り、分流して後側熱交換管群(17)の熱交換管(16)内に流入する。   The refrigerant that has entered the first space (38) of the second intermediate header (14) flows to the left and passes through the circular communication hole (65) of the rear partition (41) of the third member (23). The air enters the second space (39), is divided, and flows into the heat exchange pipe (16) of the rear heat exchange pipe group (17).

熱交換管(16)内に流入した冷媒は、熱交換管(16)内を上方に流れて冷媒出口ヘッダ部(6)の第2空間(39)内に入り、第3部材(23)の後側仕切部(41)の方形冷媒通過穴(52)を通って第1空間(38)内に入る。   The refrigerant that has flowed into the heat exchange pipe (16) flows upward in the heat exchange pipe (16) and enters the second space (39) of the refrigerant outlet header (6), and reaches the third member (23). It enters the first space (38) through the rectangular refrigerant passage hole (52) of the rear partition (41).

冷媒出口ヘッダ部(6)の第1空間(38)内に入った冷媒は右方に流れ、右エンド部材(25)の後キャップ(25b)の冷媒出口(9)およびジョイントプレート(26)の冷媒流出部(63)を通り、冷媒出口管(12)に流出する。   The refrigerant that has entered the first space (38) of the refrigerant outlet header (6) flows to the right, and the refrigerant outlet (9) of the rear cap (25b) of the right end member (25) and the joint plate (26). It passes through the refrigerant outlet (63) and flows out to the refrigerant outlet pipe (12).

そして、冷媒が前後両熱交換管群(17)の熱交換管(16)内を流れる間に、熱交換コア部(4)の通風間隙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。   While the refrigerant flows in the heat exchange pipe (16) of both the front and rear heat exchange pipe groups (17), the refrigerant exchanges heat with the air passing through the ventilation gap of the heat exchange core section (4). And leaked.

この発明による熱交換器は、カーエアコンを構成する冷凍サイクルのエバポレータとして好適に用いられる。   The heat exchanger according to the present invention is suitably used as an evaporator of a refrigeration cycle constituting a car air conditioner.

(1):エバポレータ(熱交換器)
(2):第1ヘッダタンク
(5):冷媒入口ヘッダ部
(6):冷媒出口ヘッダ部
(8):冷媒入口
(9):冷媒出口
(16):熱交換管
(21):第1部材
(22):第2部材
(23):第3部材
(24):左エンド部材
(25):右エンド部材
(35):第1空間
(36):第2空間
(37):前側仕切部
(38):第1空間
(39):第2空間
(41):後側仕切部
(48):連通口(連通部)
(52):冷媒通過穴
(1): Evaporator (heat exchanger)
(2): First header tank
(5): Refrigerant inlet header
(6): Refrigerant outlet header
(8): Refrigerant inlet
(9): Refrigerant outlet
(16): Heat exchange pipe
(21): First member
(22): Second member
(23): Third member
(24): Left end member
(25): Right end member
(35): 1st space
(36): Second space
(37): Front partition
(38): 1st space
(39): Second space
(41): Rear partition
(48): Communication port (communication part)
(52): Refrigerant passage hole

Claims (5)

一端部に冷媒入口を有するとともに他端部が閉鎖された冷媒入口ヘッダ部と、長さ方向を上下方向に向けるとともに冷媒入口ヘッダ部の長さ方向に間隔をおいて配置され、かつ冷媒入口ヘッダ部に接続された複数の熱交換管とを備えており、冷媒入口ヘッダ部内が、仕切部によって上下に並んだ第1および第2の空間に区画され、冷媒入口が第1空間内に通じるとともに、第2空間内に熱交換管が臨むようになされており、冷媒が、仕切部における冷媒入口ヘッダ部の閉鎖端部側の部分に形成された連通部を通って第1空間から第2空間に流入するようになされている熱交換器において、
冷媒入口ヘッダ部内の仕切部における第2空間に臨む下面の連通部よりも冷媒入口側の部分に、熱交換器側に突出した凸部と、これと反対側に凹んだ凹部とが、冷媒入口ヘッダ部の長さ方向に並んで交互に設けられている熱交換器。
A refrigerant inlet header having a refrigerant inlet at one end and closed at the other end; and a refrigerant inlet header arranged with a distance in the length direction of the refrigerant inlet header with the length direction directed vertically A plurality of heat exchange pipes connected to the section, the refrigerant inlet header section is partitioned into first and second spaces arranged vertically by a partitioning section, and the refrigerant inlet communicates with the first space. The heat exchange tube faces the second space, and the refrigerant passes from the first space to the second space through the communication portion formed in the portion of the partition portion on the closed end side of the refrigerant inlet header portion. In a heat exchanger designed to flow into
A convex portion projecting toward the heat exchanger and a concave portion recessed on the opposite side are formed in the refrigerant inlet side portion of the partition portion in the refrigerant inlet header portion on the refrigerant inlet side with respect to the communicating portion on the lower surface facing the second space. A heat exchanger provided alternately along the length of the header.
上記連通部が、冷媒入口ヘッダ部の閉鎖端部に位置する熱交換管よりも上記閉鎖端部側において仕切部に形成され、冷媒入口ヘッダ部内の仕切部下面の凸部および凹部が設けられている範囲内に、冷媒入口ヘッダ部の閉鎖端部に位置する熱交換管を含んで少なくとも3つの熱交換管が配置されている請求項1記載の熱交換器。 The communication portion is formed in the partition portion on the closed end side with respect to the heat exchange pipe located at the closed end portion of the refrigerant inlet header portion, and a convex portion and a concave portion on the lower surface of the partition portion in the refrigerant inlet header portion are provided. 2. The heat exchanger according to claim 1, wherein at least three heat exchange tubes are arranged within a range including a heat exchange tube located at a closed end portion of the refrigerant inlet header portion. 仕切部の凸部が、冷媒入口ヘッダ部の長さ方向に隣り合う熱交換管どうしの間に設けられ、同じく凹部が熱交換管と対応する位置に設けられている請求項1または2記載の熱交換器。 The convex part of a partition part is provided between the heat exchange pipe | tubes adjacent to the length direction of a refrigerant | coolant inlet header part, and the recessed part is similarly provided in the position corresponding to a heat exchange pipe | tube. Heat exchanger. 冷媒入口ヘッダ部が、熱交換管が接続された第1部材と、第1部材の上側を覆う第2部材と、第1部材と第2部材との間に配置されて第1および第2部材にろう付され、かつ冷媒入口ヘッダ部内を第1および第2の空間に区画する仕切部を有する第3部材とを備えており、第3部材を変形させることにより、第3部材の仕切部下面に凸部および凹部が設けられている請求項1〜3のうちのいずれかに記載の熱交換器。 A refrigerant inlet header is disposed between the first member to which the heat exchange pipe is connected, the second member that covers the upper side of the first member, and the first member and the second member, and the first and second members. And a third member having a partition portion for partitioning the inside of the refrigerant inlet header into first and second spaces, and by deforming the third member, the lower surface of the partition portion of the third member The heat exchanger according to any one of claims 1 to 3, wherein a convex portion and a concave portion are provided on the surface. 冷媒入口ヘッダ部の風上側に冷媒出口ヘッダ部が一体に設けられ、冷媒出口ヘッダ部に、長さ方向を上下方向に向けるとともに冷媒出口ヘッダ部の長さ方向に間隔をおいて配置された複数の熱交換管が接続されており、冷媒出口ヘッダ部の一端部に冷媒出口が設けられるとともに他端部が閉鎖され、冷媒出口ヘッダ部内が、仕切部によって上下に並んだ第1および第2の空間に区画され、当該仕切部に第1および第2空間を通じさせる冷媒通過穴が形成され、冷媒出口が第1空間内に通じるとともに、第2空間内に熱交換管が臨むようになされ、
冷媒入口ヘッダ部および冷媒出口ヘッダ部が1つのヘッダタンクに設けられており、当該ヘッダタンクが、熱交換管が接続された第1部材と、第1部材の上側を覆う第2部材と、第1部材と第2部材との間に配置されて第1および第2部材にろう付された第3部材と、第1部材、第2部材および第3部材の両端にろう付されたエンド部材とよりなり、第1および第2部材に、それぞれ冷媒入口ヘッダ部および冷媒出口ヘッダ部を形成するヘッダ形成部が設けられ、第3部材に、冷媒入口ヘッダ部内および冷媒出口ヘッダ部内をそれぞれ第1および第2空間に区画する2つの仕切部が設けられ、いずれか一方のエンド部材に冷媒入口および冷媒出口が形成され、第3部材を変形させることにより第3部材の両仕切部下面に凸部および凹部が設けられている請求項1〜3のうちのいずれかに記載の熱交換器。
A plurality of refrigerant outlet header portions integrally provided on the windward side of the refrigerant inlet header portion, the length of the refrigerant outlet header portion being directed in the up and down direction, and an interval in the length direction of the refrigerant outlet header portion. The refrigerant outlet header portion is provided with a refrigerant outlet at one end thereof, the other end portion thereof is closed, and the refrigerant outlet header portion is arranged in a vertical direction by a partitioning portion. A refrigerant passage hole that is partitioned into a space and allows the first and second spaces to pass through the partition is formed, the refrigerant outlet communicates with the first space, and the heat exchange tube faces the second space.
The refrigerant inlet header portion and the refrigerant outlet header portion are provided in one header tank, and the header tank includes a first member to which the heat exchange pipe is connected, a second member that covers the upper side of the first member, A third member disposed between the first member and the second member and brazed to the first and second members; an end member brazed to both ends of the first member, the second member and the third member; The first and second members are provided with header forming portions that form the refrigerant inlet header portion and the refrigerant outlet header portion, respectively, and the third member has the first and second portions inside the refrigerant inlet header portion and the refrigerant outlet header portion, respectively. Two partition portions that divide into the second space are provided, a refrigerant inlet and a refrigerant outlet are formed in one of the end members, and a convex portion and a bottom surface of both partition portions of the third member are deformed by deforming the third member. Recessed A heat exchanger according to any one of claims 1-3 being.
JP2010018301A 2010-01-29 2010-01-29 Heat exchanger Pending JP2011158127A (en)

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JP2015064136A (en) * 2013-09-25 2015-04-09 株式会社デンソー Cold storage heat exchanger
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