JP5026100B2

JP5026100B2 - Heat exchanger

Info

Publication number: JP5026100B2
Application number: JP2007026591A
Authority: JP
Inventors: 聖一端
Original assignee: T.RAD CO., L T D.
Current assignee: T.RAD CO., L T D.
Priority date: 2007-02-06
Filing date: 2007-02-06
Publication date: 2012-09-12
Anticipated expiration: 2027-02-06
Also published as: JP2008190797A

Description

本発明は、冷媒が蛇行状に流通する主として空調用熱交換器に関する。 The present invention mainly relates to a heat exchanger for air conditioning in which a refrigerant circulates in a meandering manner.

従来の空調用の熱交換器は、主としてクロスフィンタイプのものである。この熱交換器は、多数のチューブ挿通孔を有するプレートフィンを並列し、それにヘアピンチューブを多数挿通し、そのチューブの端部間をＵベンドチューブで連結することにより、冷媒流路を蛇行状に形成したものである。
また、Ｕベンドチューブを多数使用する代わりに、下記特許文献においては、第１プレート部に多数の凹部を形成しておき、その第１プレートに平坦な第２プレートを接合し、その第２プレートに多数のチューブ挿通孔を穿設しておく。そして、熱交換器コアの各チューブ端を第２プレートの孔に挿通し、各凹部によってチューブ端間を流路接続したものが提案されている。 Conventional heat exchangers for air conditioning are mainly of the cross fin type. In this heat exchanger, plate fins having a large number of tube insertion holes are juxtaposed, a large number of hairpin tubes are inserted into the plate fins, and the ends of the tubes are connected by U-bend tubes, thereby making the refrigerant flow path meandering. Formed.
Instead of using a large number of U-bend tubes, in the following patent document, a large number of concave portions are formed in the first plate portion, and a flat second plate is joined to the first plate, and the second plate A number of tube insertion holes are drilled in. And the thing which inserted each tube end of the heat exchanger core into the hole of the 2nd plate, and connected the flow path between tube ends by each recessed part is proposed.

特開２００３−２４０４６８号公報JP 2003-240468 A

各チューブの端部間をＵベンドチューブで接続する従来の熱交換器は、熱交換器のコンパクト性に欠けるとともに、部品点数が多く組立作業性に欠ける欠点があった。また、上記特許文献に記載の発明の場合には、第１プレートをプレス成形して連結用の凹部を形成し、第２プレートは平坦に形成している。そのため、それらによる流路の深さが浅くならざるを得ず、冷媒の流路抵抗が増大するおそれがある。また、第１プレートにより深い凹部を形成するとすれば、冷媒の耐圧性に欠ける欠点がある。
そこで、本発明は係る問題点を解決することを課題とする。 The conventional heat exchanger in which the ends of the tubes are connected by U-bend tubes has a drawback that the heat exchanger is not compact and has a large number of parts and lacks assembly workability. In the case of the invention described in the above patent document, the first plate is press-molded to form a concavity for connection, and the second plate is formed flat. Therefore, the depth of the flow path by them must be shallow, and the flow path resistance of the refrigerant may increase. Further, if a deep recess is formed in the first plate, there is a drawback that the pressure resistance of the refrigerant is lacking.
Then, this invention makes it a subject to solve the problem which concerns.

請求項１記載の本発明は、多数のチューブ(1) が互いに平行に並列されると共に、チューブ(1) の外面に多数のフィン(2) を接触固定してコア(3) が構成され、その各チューブ(1) の端部間を連結して蛇行状の流路が形成される熱交換器において、
多数の第１凹部(4) が互いに離間して形成された第１プレート部(5) と、前記各第１凹部(4) に整合する多数の第２凹部(6) が互いに離間して形成され且つ、その各第２凹部(6) に前記チューブ(1) の端部に整合する複数のチューブ連通孔(7) が互いに離間して形成された第２プレート部(8) と、を具備し、
夫々の第１凹部(4) と第２凹部(6) とが互いに対向するように両プレート部(6)(8) が重ね合わされて夫々の凹部(4)(6) 内に小タンク部(16) を形成するとともに、その各小タンク部(16) 以外の部分が一体に液密に接合されて、多数の小タンク部(16) 付きの偏平な連結部材(9) を構成し、
その連結部材(9)は、一枚の金属板により第１プレート部(5) の各第１凹部(4) と第２プレート部(8) の各第２凹部(6) とが線対称に一体にプレス成形され、その対称線(11) の位置で金属板が折り返されてなり、
その第１凹部(4)の周縁部で、少なくともその長手方向の端部に、その金属板を貫通するスリット(12)が形成され、それにより第１凹部(4)と第２凹部(6)周縁の平面どうしの接触を良好として、ろう付けの際の各凹部周縁のろうまわりを良くし且つ、そこにろう材を保持するように構成し、
その連結部材(9) が前記コア(3) の側面に配置されて、夫々の小タンク部(16) の各チューブ挿通孔(7) に前記各チューブ(1) の端部が液密に挿通固定されてなる熱交換器である。 According to the first aspect of the present invention, a large number of tubes (1) are arranged in parallel to each other, and a large number of fins (2) are fixed in contact with the outer surface of the tube (1) to form a core (3). In the heat exchanger in which the end portions of the tubes (1) are connected to form a meandering flow path,
A first plate portion (5) formed with a large number of first recesses (4) spaced apart from each other and a plurality of second recesses (6) aligned with the respective first recesses (4) are formed spaced apart from each other. And a plurality of tube communication holes (7) aligned with the end portions of the tubes (1) in the second recesses (6). And
Both plate portions (6) and (8) are overlapped so that the respective first recesses (4) and the second recesses (6) face each other, and a small tank portion (in the respective recesses (4) and (6)). 16), and portions other than each small tank portion (16) are integrally liquid-tightly joined to form a flat connecting member (9) with a large number of small tank portions (16).
In the connecting member (9), the first concave portion (4) of the first plate portion (5) and the second concave portion (6) of the second plate portion (8) are axisymmetric with a single metal plate. It is press-molded integrally, and the metal plate is folded at the position of the symmetry line (11).
A slit (12) penetrating the metal plate is formed at the peripheral edge of the first recess (4) at least at the end in the longitudinal direction, whereby the first recess (4) and the second recess (6) are formed. It is configured so that the contact between the peripheral planes is good, the periphery of each recess periphery is improved during brazing, and the brazing material is held there.
The connecting member (9) is disposed on the side surface of the core (3), and the end of each tube (1) is liquid-tightly inserted into each tube insertion hole (7) of each small tank section (16). This is a fixed heat exchanger.

請求項２記載の本発明は、請求項１に記載において、
前記第２凹部(6) の各チューブ挿通孔(7) の孔縁部を外面側に突設して小筒部(10) が形成されてなる熱交換器である。 The present invention according to claim 2 is the invention according to claim 1 ,
It is a heat exchanger in which a small tube portion (10) is formed by projecting a hole edge portion of each tube insertion hole (7) of the second recess (6) to the outer surface side.

請求項３に記載の本発明は、請求項１または請求項２において、
前記各チューブ(1) は、その軸線がＵ字状に形成されたものからなり、前記連結部材(9) が前記コア(3) の一側のみに配置された熱交換器である。 According to a third aspect of the present invention, in the first or second aspect ,
Each of the tubes (1) is a heat exchanger whose axis is formed in a U shape, and the connecting member (9) is disposed only on one side of the core (3).

請求項４記載の本発明は、請求項１または請求項２において、
前記各チューブ(1) は、その軸線が直線状に形成されたものからなり、一対の前記連結部材(9) が前記コア(3) の両側に配置された熱交換器である。 The present invention according to claim 4 provides the method according to claim 1 or claim 2 ,
Each of the tubes (1) is a heat exchanger in which an axis is formed in a straight line, and a pair of the connecting members (9) are disposed on both sides of the core (3).

請求項５記載の本発明は、請求項１〜請求項４のいずれかにおいて、
第２プレート部(8) が第１プレート部(5) の縁より突出し、その突出部が断面Ｌ字状に形成されて熱交換器取付け用側板を兼ねる熱交換器である。 A fifth aspect of the present invention provides the method according to any one of the first to fourth aspects,
The second plate portion (8) protrudes from the edge of the first plate portion (5), and the protruding portion is formed in an L-shaped cross section to serve as a heat exchanger mounting side plate.

本発明の熱交換器は、多数のチューブ１が並列され、その流路が蛇行状に形成されたものにおいて、一対の第１プレート部５、第２プレート部８を重ね合せて、多数の小タンク部16付きの偏平な連結部材９を構成し、その小タンク部16のチューブ挿通孔７にチューブ１の端部が液密に挿通固定されてなるものであるから、多数のチューブ１間を連結部材９により同時に一体的に連結することができる。しかも、各チューブ１の端部は小タンク部16のチューブ挿通孔７に挿通されて液密に挿通固定されるものであるから、それらの接続部の信頼性が向上する。
また、夫々の小タンク部16は、第１プレート部５の第１凹部４とそれに整合する第２プレート部８の第２凹部６とが対向してなり、各プレート部はプレス成形体からなるため、無理なく第１凹部４、第２凹部６を形成し、十分な容量の各小タンク部16を形成できる。それにより各チューブ１の接続部における流体抵抗を減少し、熱交換性能のよいものを提供できる。 In the heat exchanger according to the present invention, a large number of tubes 1 are arranged in parallel and the flow path is formed in a meandering shape, and a pair of first plate portion 5 and second plate portion 8 are overlapped to form a large number of small tubes. Since the flat connecting member 9 with the tank portion 16 is configured, and the end portion of the tube 1 is liquid-tightly inserted and fixed in the tube insertion hole 7 of the small tank portion 16, a large number of tubes 1 are connected. The connecting members 9 can be integrally connected at the same time. In addition, since the end portions of the tubes 1 are inserted through the tube insertion holes 7 of the small tank portion 16 and are fluid-tightly inserted and fixed, the reliability of the connecting portions is improved.
Each of the small tank portions 16 has the first concave portion 4 of the first plate portion 5 opposed to the second concave portion 6 of the second plate portion 8 aligned therewith, and each plate portion is made of a press-formed body. Therefore, the first concave portion 4 and the second concave portion 6 can be formed without difficulty and each small tank portion 16 having a sufficient capacity can be formed. Thereby, the fluid resistance in the connection part of each tube 1 can be reduced, and a thing with good heat exchange performance can be provided.

さらに、一枚の金属板をプレス成形により第１凹部４と第２凹部６とを線対称に設けた第１プレート部５と第２プレート部８とを一体に形成し、その対称線11の位置で金属板を折り返して偏平な連結部材９を構成したので、部品点数を少なくし、製造しやすく精度の高い熱交換器を提供できる。
そして、その第１凹部(4)の周縁部で、少なくともその長手方向の端部に、その金属板を貫通するスリット(12)が形成され、それにより第１凹部(4)と第２凹部(6)周縁の平面どうしの接触を良好として、ろう付けの際の各凹部周縁のろうまわりを良くし且つ、そこにろう材を保持するように構成したものである。即ち、スリット(12)により、凹部まわりの剛性を弱めて、各凹部回りの平坦部の接触を良好とし、ろう付けの信頼性を向上できる。
上記の構成において、第２凹部６の各チューブ挿通孔７の孔縁部を外面側に突出させて、小筒部10を形成した場合には、その小筒部10とチューブ１との接続部の液密性をさらに向上しうる。 Further, the first plate portion 5 and the second plate portion 8 in which the first concave portion 4 and the second concave portion 6 are provided in line symmetry are formed integrally by press forming a single metal plate, and the symmetrical line 11 is formed. since it is configured a flat connecting member 9 is folded a metal plate in position, and reduce the number of parts can be provided a manufacturing easy accurate heat exchanger.
Then , a slit (12) penetrating the metal plate is formed at least at the end in the longitudinal direction at the peripheral edge of the first recess (4), whereby the first recess (4) and the second recess ( 6) It is constructed so that the contact between the peripheral planes is good, the periphery of each recess periphery during brazing is improved, and the brazing material is held there. That is, the slit (12) weakens the rigidity around the recesses, improves the contact of the flat part around each recess, and improves the brazing reliability.
In the above configuration, when the small tube portion 10 is formed by projecting the edge of each tube insertion hole 7 of the second recess 6 toward the outer surface, the connecting portion between the small tube portion 10 and the tube 1 is formed. The liquid tightness can be further improved.

上記いずれかの構成において、チューブ１としてその軸線がＵ字状に形成されたものを使用する場合には、連結部材９をコア３の一側面のみに配置することができ、構造の簡単な、信頼性の高い熱交換器を提供できる。
上記いずれかの構成において、チューブ１としてその軸線が直線状に形成されたものを使用する場合には、一対の連結部材９によって多数の各チューブ１間を連結することができる。
上記いずれかの構成において、第２プレート部８の端部を第１プレート部５の縁より突出し、その突出部を断面Ｌ字状に形成し、それを熱交換器取付け用側板とする場合には、全体として部品点数が少なく、強度の高い熱交換器を提供できる。 In any one of the above configurations, when the tube 1 whose axis is formed in a U shape is used, the connecting member 9 can be disposed only on one side surface of the core 3, and the structure is simple. A highly reliable heat exchanger can be provided.
In any one of the above-described configurations, when a tube 1 whose axis is formed in a straight line is used, a large number of tubes 1 can be connected by a pair of connecting members 9.
In any of the above configurations, when the end portion of the second plate portion 8 protrudes from the edge of the first plate portion 5 and the protruding portion is formed in an L-shaped cross section, which is used as a heat exchanger mounting side plate. Can provide a high-strength heat exchanger with a small number of parts as a whole.

次に図面に基づいて本発明の各実施の形態につき説明する。図１は本発明の熱交換器に用いられる連結部材９の要部を示し、（Ａ）はその正面図、（Ｂ）はその展開図、（Ｃ）は同縦断面図であって、（Ｂ）のＣ−Ｃ上におけるものである。また、図２は同熱交換器の一部分解正面図を示し、図３は同要部正面図および同側面図である。 Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1: shows the principal part of the connection member 9 used for the heat exchanger of this invention, (A) is the front view, (B) is the expanded view, (C) is the longitudinal cross-sectional view, B) on CC. FIG. 2 is a partially exploded front view of the heat exchanger, and FIG. 3 is a front view and a side view of the main part.

この熱交換器は、図２および図３に示す如く、多数のプレート型のフィン２が小隙を有して並列され、そのチューブ挿通孔に多数のチューブ１が貫通しチューブ１とフィン２とが接触固定されたものである。この例ではチューブ１はその軸線がＵ字状に形成されている、いわゆるヘアピンチューブが用いられている。そして、そのヘアピンチューブは図２において左側にＵ字部1bが位置し、右側に端部1aが開口してコア３を構成する。またこの例ではチューブ１は図３（Ｂ）に示す如く、コア３の長手方向に対して斜めに配置されている。係るコア３自体は公知のものである。 As shown in FIGS. 2 and 3, this heat exchanger has a large number of plate-type fins 2 arranged in parallel with a small gap, and a large number of tubes 1 pass through the tube insertion holes so that the tubes 1, fins 2, Is fixed by contact. In this example, the tube 1 is a so-called hairpin tube whose axis is U-shaped. In the hairpin tube, the U-shaped portion 1b is located on the left side in FIG. 2, and the end portion 1a is opened on the right side to constitute the core 3. In this example, the tube 1 is disposed obliquely with respect to the longitudinal direction of the core 3 as shown in FIG. The core 3 itself is a known one.

ここにおいて、本発明の特徴は連結部材９にある。連結部材９は一枚の金属板のプレス成形体からなり、図１（Ｂ）に示す如く展開状態で、長手方向に平行な中心線である対称線11の両側に第１プレート部５と第２プレート部８とを有し、その同一平面側に第１凹部４と第２凹部６とが対称線11に対して対称にプレス形成されている。
そして、第１凹部４の外周に隣接し、互いに離間した複数のスリット12が穿設されている。このスリット12は、ろう付けの際のろうまわりを良好に行うものである。また、第２プレート部８の第２凹部６両端部には一対のチューブ挿通孔７が設けられている。その孔縁部がバーリング加工されて、外面側に小筒部10を形成する。
そして、対称線11を中心とし第１凹部４と第２凹部６とが対向するように折り返され、図１に示す如く第１プレート部５と第２プレート部８とが接触して連結部材９を構成する。なお、この金属板の内面側には予めろう材が被覆されたものが用いられる。 Here, the feature of the present invention resides in the connecting member 9. The connecting member 9 is made of a press-formed body of a single metal plate, and in the unfolded state as shown in FIG. 1 (B), the first plate portion 5 and the first plate 5 are arranged on both sides of a symmetry line 11 that is a center line parallel to the longitudinal direction. The first concave portion 4 and the second concave portion 6 are press-formed symmetrically with respect to the symmetry line 11 on the same plane side.
A plurality of slits 12 are formed adjacent to the outer periphery of the first recess 4 and spaced apart from each other. The slit 12 is used to satisfactorily perform brazing around the brazing. A pair of tube insertion holes 7 are provided at both ends of the second concave portion 6 of the second plate portion 8. The hole edge portion is burring processed to form the small tube portion 10 on the outer surface side.
Then, the first concave portion 4 and the second concave portion 6 are folded back so that the first concave portion 4 and the second concave portion 6 face each other with the symmetry line 11 as the center, and the first plate portion 5 and the second plate portion 8 come into contact with each other as shown in FIG. Configure. Note that the inner surface of the metal plate is previously coated with a brazing material.

このようにしてなる連結部材９は、夫々の第１凹部４、第２凹部６内に小タンク部16を形成するとともに、その小タンク部16以外の部分が接触固定され、多数の小タンク部16を有し偏平に形成される。そしてこの連結部材９が、図２および図３に示す如くコア３の右側に位置し、チューブ１の端部1aが連結部材９の小筒部10に夫々嵌着し、両者間が一体にろう付け固定されるとともに、第１プレート部５と第２プレート部８の平面間も一体にろう付け固定される。そして、一対の接続管14の端部がコア３の上下両端に位置するチューブ１の端部1aに結合され、熱交換器を完成する。
そして、一方の接続管14から冷媒13が供給され、各チューブ１内を蛇行状に流通して、他方の接続管14からそれが流出する。そして、コア３の厚み方向に空気が流通し、それと冷媒13との間に熱交換が行われるものである。 The connecting member 9 thus formed forms a small tank portion 16 in each of the first concave portion 4 and the second concave portion 6, and the portions other than the small tank portion 16 are fixed in contact with each other. 16 is formed flat. 2 and 3, the connecting member 9 is positioned on the right side of the core 3, and the end 1a of the tube 1 is fitted into the small tube portion 10 of the connecting member 9, respectively, so that the two are integrated. While being fixed by brazing, the planes of the first plate portion 5 and the second plate portion 8 are also brazed and fixed integrally. And the edge part of a pair of connecting pipe 14 is couple | bonded with the edge part 1a of the tube 1 located in the up-and-down both ends of the core 3, and a heat exchanger is completed.
Then, the refrigerant 13 is supplied from one connecting pipe 14 and flows in a meandering manner in each tube 1, and flows out from the other connecting pipe 14. Then, air flows in the thickness direction of the core 3, and heat exchange is performed between the air and the refrigerant 13.

なお、ろう付けの際、連結部材９の第１プレート部５側に設けられたスリット12は、特に小タンク部16の長手方向端部におけるろう付け不良を防止する。すなわち、第１プレート部５と第２プレート部８との接触部のろう付けにおいて、小タンク部16の長手方向両端部に、平面どうしの非接触部が生じやすく、その部分にろう付け不良が起こりがちであるが、スリット12の存在によって、平面どうしを接触し易くしかつ、スリット12にろう材を保持してろう付け不良を防止するものである。 In addition, when brazing, the slit 12 provided on the first plate portion 5 side of the connecting member 9 prevents brazing failure particularly at the longitudinal end portion of the small tank portion 16. That is, in the brazing of the contact portion between the first plate portion 5 and the second plate portion 8, non-contact portions between the flat surfaces are likely to occur at both ends in the longitudinal direction of the small tank portion 16, and there is a brazing defect at that portion. Although it tends to occur, the presence of the slit 12 makes the flat surfaces easy to contact with each other and holds the brazing material in the slit 12 to prevent brazing failure.

次に図４および図５は本発明の第２の実施例であり、図４はその連結部材９の要部を示す正面図および展開図であり、図５は同熱交換器の側面図である。
この熱交換器が図３のそれと異なる点は、図３ではチューブ１が斜め配列であるのに対し、図５ではそれが縦に配列されている。そして、この例では、チューブ１がコア３の幅方向に２列に配置されている。そのチューブ１の配列に整合するように、連結部材９はこの例では下端を除いて２列に配置されている。そして、図４（Ｂ）の最下端において第２凹部６、第１凹部４は斜めに配列され、それらが図５の如く重ね合わされて、前列と後列とをそれによって連結している。 Next, FIG. 4 and FIG. 5 are the 2nd Example of this invention, FIG. 4 is the front view and expansion | deployment figure which show the principal part of the connection member 9, FIG. 5 is a side view of the same heat exchanger. is there.
The heat exchanger differs from that of FIG. 3 in that the tubes 1 are arranged in an oblique arrangement in FIG. 3 whereas they are arranged vertically in FIG. In this example, the tubes 1 are arranged in two rows in the width direction of the core 3. In this example, the connecting members 9 are arranged in two rows except for the lower end so as to match the arrangement of the tubes 1. Then, the second recess 6 and the first recess 4 are arranged obliquely at the lowermost end of FIG. 4B, and they are overlapped as shown in FIG. 5, thereby connecting the front row and the rear row.

この例において、第１プレート部５におけるスリット12は最下端を除いて一対の第１凹部４間に縦に配置され、最下単においては図１（Ｂ）と同様に形成されている。これは縦列においては幅方向に離間した一対の第１凹部４の中間部に、平面どうしの接触不良およびろう付け不良が生じやすいのを補っているものである。
この例でも図４（Ｂ）において、対称線11を中心にして第１プレート部５と第２プレート部８とが折り曲げられ、両者が一体に接合され、図４（Ａ）に示す如く形成される。そして、その連結部材９が図５に示す如くコア３の各チューブ１間を縦方向に連結するものである。
この例では、最上端に位置する一対のチューブ１に夫々接続管14が接続され、一方の接続管14から冷媒13が流入し、各チューブ１をコア３の前面側において蛇行状に流通し、最下端において、それが後列に移動し、後列の各チューブ１を蛇行状に流通して接続管14から放出される。そして、空気はコア３の厚み方向に流通し、それと冷媒13との間に熱交換が行われるものである。 In this example, the slit 12 in the first plate portion 5 is vertically disposed between the pair of first recesses 4 except for the lowermost end, and is formed in the same manner as in FIG. This compensates for the occurrence of poor contact between the flat surfaces and poor brazing at the intermediate portion of the pair of first recesses 4 spaced apart in the width direction in the column.
Also in this example, in FIG. 4 (B), the first plate portion 5 and the second plate portion 8 are bent around the symmetry line 11, and both are joined together to form as shown in FIG. 4 (A). The The connecting member 9 connects the tubes 1 of the core 3 in the vertical direction as shown in FIG.
In this example, a connecting pipe 14 is connected to each of the pair of tubes 1 located at the uppermost ends, the refrigerant 13 flows from one connecting pipe 14, and each tube 1 circulates in a meandering manner on the front side of the core 3. At the lowermost end, it moves to the rear row, and passes through each tube 1 in the rear row in a meandering manner and is discharged from the connecting tube 14. The air flows in the thickness direction of the core 3, and heat exchange is performed between the air and the refrigerant 13.

次に図６および図７は本発明の第３の実施の形態を示し、この例は、複数の混合部15用の小タンク部16が並列されたものである。そして、二系列に流通する冷媒13が各小タンク部16に合流して混合され、ついで再度二系列に分流する。そしてそれが繰り返されるものである。なお、この小タンク部16の外周にもスリット12が形成され、それによって第１プレート部５、第２プレート部８を張り合わせる際のろうまわりの安定性を確保する。また、これら各実施例のスリット12の位置は、連結部材９の強度とろうまわりの状況に応じて適宜設計変更することができる。 Next, FIGS. 6 and 7 show a third embodiment of the present invention. In this example, small tank portions 16 for a plurality of mixing portions 15 are arranged in parallel. Then, the refrigerant 13 flowing in two lines joins and is mixed in each small tank section 16, and then again diverts into two lines. And that is repeated. In addition, a slit 12 is also formed on the outer periphery of the small tank portion 16, thereby ensuring the stability of the brazing around the first plate portion 5 and the second plate portion 8. Further, the position of the slit 12 in each of the embodiments can be appropriately changed in design according to the strength of the connecting member 9 and the situation of the wax.

次に図８は本発明の第４の実施の形態を示すものであって、コア３の上面側から見た熱交換器の分解平面図である。
この例が図２のそれと異なる点は、図２ではチューブ１としてヘアピンチューブを用いたものに対し、図８の例はチューブ１として直線管を用いたものである。そのために、一対の連結部材９をコア３の両側に配置し、各チューブ１間を連結したものである。この例ではチューブ１はコア３の厚み方向に４列配置されている。また、連結部材９を構成する第１プレート部５、第２プレート部８はその長手方向一端（紙面で裏面側、図示せず）で折り返され、両者が接触固定されたものである。
さらに、第２プレート部８の幅方向両端部は第１プレート部５のそれよりも突出され、その突出部が断面Ｌ字状に形成されて補強部18を構成する。そして、この補強部18を介して熱交換器全体が適宜な図示しない支持材に取付けられるものである。 Next, FIG. 8 shows a fourth embodiment of the present invention and is an exploded plan view of the heat exchanger as viewed from the upper surface side of the core 3.
2 is different from that of FIG. 2 in that a hairpin tube is used as the tube 1 in FIG. 2 and a straight tube is used as the tube 1 in the example of FIG. Therefore, a pair of connecting members 9 are arranged on both sides of the core 3 and the tubes 1 are connected to each other. In this example, the tubes 1 are arranged in four rows in the thickness direction of the core 3. The first plate portion 5 and the second plate portion 8 constituting the connecting member 9 are folded back at one end in the longitudinal direction (on the back side of the paper, not shown), and both are fixed in contact with each other.
Furthermore, the width direction both ends of the 2nd plate part 8 protrude rather than that of the 1st plate part 5, The protrusion part is formed in cross-sectional L shape, and comprises the reinforcement part 18. As shown in FIG. The entire heat exchanger is attached to an appropriate support material (not shown) via the reinforcing portion 18.

本発明の第１の実施の形態における熱交換器に用いられる連結部材９の要部を示し、（Ａ）はその正面図、（Ｂ）は同展開図、（Ｃ）は横断面図であって、（Ｂ）のＣ−Ｃ線上におけるものである。The principal part of the connection member 9 used for the heat exchanger in the 1st Embodiment of this invention is shown, (A) is the front view, (B) is the same expanded view, (C) is a cross-sectional view. (B) on the CC line. 同熱交換器の一部分解正面図。The partially exploded front view of the same heat exchanger. 同熱交換器の要部正面図および同側面図。The principal part front view and the same side view of the same heat exchanger. 本発明の第２の実施の形態を示す熱交換器の連結部材９の正面図および展開図。The front view and expansion | deployment figure of the connection member 9 of the heat exchanger which show the 2nd Embodiment of this invention.

同熱交換器の側面図。The side view of the same heat exchanger. 本発明の第３の実施の形態を示す熱交換器の連結部材９の要部正面図および展開図。The principal part front view and expansion | deployment figure of the connection member 9 of the heat exchanger which show the 3rd Embodiment of this invention. 同熱交換器の要部側面図。The principal part side view of the same heat exchanger. 本発明の第４の実施の形態を示す熱交換器の要部分解平面図。The principal part exploded plan view of the heat exchanger which shows the 4th Embodiment of this invention.

Explanation of symbols

１チューブ
1a 端部
1b Ｕ字部
２フィン
３コア
４第１凹部
５第１プレート部 1 tube
1a end
1b U-shaped part 2 Fin 3 Core 4 1st recessed part 5 1st plate part

６第２凹部
７チューブ挿通孔
８第２プレート部
９連結部材
10 小筒部
11 対称線
12 スリット 6 Second concave portion 7 Tube insertion hole 8 Second plate portion 9 Connecting member
10 Small tube
11 symmetry line
12 Slit

13 冷媒
14 接続管
15 混合部
16 小タンク部
17 ろう材
18 補強部
19 空気 13 Refrigerant
14 Connection pipe
15 Mixing section
16 Small tank
17 Brazing material
18 Reinforcement
19 Air

Claims

A large number of tubes (1) are juxtaposed in parallel with each other, and a large number of fins (2) are contacted and fixed to the outer surface of the tube (1) to form a core (3), and the end of each tube (1) In a heat exchanger in which a meandering flow path is formed by connecting between,
A first plate portion (5) formed with a large number of first recesses (4) spaced apart from each other and a plurality of second recesses (6) aligned with the respective first recesses (4) are formed spaced apart from each other. And a plurality of tube communication holes (7) aligned with the end portions of the tubes (1) in the second recesses (6). And
Both plate portions (6) and (8) are overlapped so that the respective first recesses (4) and the second recesses (6) face each other, and a small tank portion (in the respective recesses (4) and (6)). 16), and portions other than each small tank portion (16) are integrally liquid-tightly joined to form a flat connecting member (9) with a large number of small tank portions (16).
In the connecting member (9), the first concave portion (4) of the first plate portion (5) and the second concave portion (6) of the second plate portion (8) are axisymmetric with a single metal plate. It is press-molded integrally, and the metal plate is folded at the position of the symmetry line (11).
A slit (12) penetrating the metal plate is formed at least at the end in the longitudinal direction at one peripheral edge of the first recess (4) and the second recess (6), whereby the first recess ( 4) and the second recess (6) are configured so that the contact between the peripheral flat surfaces is good, the periphery of each recess periphery is improved during brazing, and the brazing material is held there.
The connecting member (9) is disposed on the side surface of the core (3), and the end of each tube (1) is liquid-tightly inserted into each tube insertion hole (7) of each small tank section (16). A fixed heat exchanger.

In claim 1 ,
A heat exchanger in which a hole portion of each tube insertion hole (7) of the second recess (6) is provided on the outer surface side to form a small tube portion (10).

In claim 1 or claim 2 ,
Each of the tubes (1) has a U-shaped axis, and the connection member (9) is disposed only on one side of the core (3).

In any one of Claims 1-3 ,
Each of the tubes (1) has a linearly formed axis, and a pair of the connecting members (9) are arranged on both sides of the core (3).

In any one of Claims 1-4 ,
A heat exchanger in which the second plate portion (8) protrudes from the edge of the first plate portion (5), and the protruding portion is formed in an L-shaped cross section and also serves as a heat exchanger mounting side plate.