JP5851846B2 - Heat exchanger and manufacturing method thereof - Google Patents

Heat exchanger and manufacturing method thereof Download PDF

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JP5851846B2
JP5851846B2 JP2012000432A JP2012000432A JP5851846B2 JP 5851846 B2 JP5851846 B2 JP 5851846B2 JP 2012000432 A JP2012000432 A JP 2012000432A JP 2012000432 A JP2012000432 A JP 2012000432A JP 5851846 B2 JP5851846 B2 JP 5851846B2
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header
tube
heat exchanger
axial direction
notch
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JP2013139965A (en
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金子　智
智 金子
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Sanden Holdings Corp
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Description

本発明は、例えば車両用空気調和装置の蒸発器、凝縮器またはヒータ等として用いられる熱交換器及びその製造方法に関するものである。   The present invention relates to a heat exchanger used as, for example, an evaporator, a condenser or a heater of a vehicle air conditioner and a method for manufacturing the same.

従来、この種の熱交換器としては、熱媒体流通用の筒状のヘッダーと、互いにヘッダーの軸方向に間隔をおいて配置され、それぞれヘッダーの側面に接続される複数の熱媒体流通用のチューブとを備え、ヘッダーの側面に設けた複数の接続孔に各チューブの端部をそれぞれ挿入することにより、各チューブをヘッダーの側面に接続するようにしたものが知られている（例えば、特許文献１参照）。   Conventionally, as this kind of heat exchanger, a cylindrical header for heat medium distribution and a plurality of heat medium distribution holes arranged at intervals in the axial direction of the header and connected to the side surfaces of the header, respectively. It is known that each tube is connected to the side surface of the header by inserting the ends of each tube into a plurality of connection holes provided on the side surface of the header. Reference 1).

特許第４４５１９８１号公報Japanese Patent No. 4451981

しかしながら、前記熱交換器では、予め接続孔が設けられたヘッダーに各チューブの端部をそれぞれ挿入するようにしているため、各接続孔にチューブを一本ずつ挿入しなければならず、組立作業が煩雑になるという問題点があった。特に、フィンを用いずに扁平状のチューブを狭い間隔で配列した、いわゆるフィンレス型の熱交換器においては、チューブの表面による伝熱面積を大きくする必要があるため、チューブの本数が多くなり、その分だけチューブの挿入作業が煩雑になるという問題点があった。また、扁平状のチューブが挿入される横長の接続孔を互いに近接するように設ける場合、各接続孔の間部分が細長くなり、ヘッダーへの接続孔の打ち抜き加工が困難になるという問題点もあった。   However, in the heat exchanger, since the end of each tube is inserted into a header provided with a connection hole in advance, one tube must be inserted into each connection hole. There was a problem that became complicated. In particular, in so-called finless type heat exchangers in which flat tubes are arranged at narrow intervals without using fins, it is necessary to increase the heat transfer area by the surface of the tube, so the number of tubes increases, There was a problem that the tube insertion work was complicated accordingly. In addition, when the horizontally long connection holes into which the flat tubes are inserted are provided so as to be close to each other, the portion between the connection holes becomes elongated, and it is difficult to punch the connection holes into the header. It was.

本発明は前記問題点に鑑みてなされたものであり、その目的とするところは、チューブの本数が多い場合でも、各チューブをヘッダーに容易に接続することのできる熱交換器及びその製造方法を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a heat exchanger that can easily connect each tube to a header even when the number of tubes is large, and a method for manufacturing the same. It is to provide.

本発明は前記目的を達成するために、筒状に形成された熱媒体流通用のヘッダーと、互いにヘッダーの軸方向に間隔をおいて配置され、それぞれヘッダーの側面に接続される複数の熱媒体流通用のチューブとを備え、ヘッダーの側面には各チューブの端部がそれぞれ接続される複数の接続孔を設けた熱交換器において、前記ヘッダーを、互いにヘッダーの軸方向に接合される複数の分割部材によって形成するとともに、各分割部材の両端の接合端面のうち少なくとも一方の接合端面に前記接続孔の一部をなす切り欠き部を設け、互いに接合される各分割部材の接合端面間に前記切り欠き部によって接続孔を形成し、各分割部材の接合端面に、互いにヘッダーの径方向への移動を規制するように係合する係合部を設け、係合部を分割部材の軸方向一方の端面に設けた凸部と軸方向他方の端面に設けた凹部とから形成している。 In order to achieve the above-mentioned object, the present invention provides a header for circulating a heat medium formed in a cylindrical shape, and a plurality of heat mediums arranged at intervals in the axial direction of the header and connected to the side surfaces of the header, respectively. In a heat exchanger provided with a distribution tube, and provided with a plurality of connection holes to which the end portions of the respective tubes are connected on the side surfaces of the header, the header is joined to each other in the axial direction of the header. Formed by the divided members, and provided with a notch portion forming a part of the connection hole in at least one of the joint end surfaces of both ends of each of the divided members, and between the joint end surfaces of the divided members to be joined to each other the notches to form a connection hole, the joining end surfaces of the dividing member, an engaging portion that engages so as to restrict the radial movement of the header provided with each other, the axial direction of the dividing member engaging portion It is formed from a recess formed on the end surface of the convex portion and the other axial provided on one end face.

また、本発明は前記目的を達成するために、熱媒体流通用の筒状のヘッダーと、互いにヘッダーの軸方向に間隔をおいて配置され、それぞれヘッダーの側面に接続される複数の熱媒体流通用のチューブとを備え、ヘッダーの側面には各チューブの端部がそれぞれ接続される複数の接続孔を設けた熱交換器の製造方法において、前記ヘッダーを、互いにヘッダーの軸方向に接合される複数の分割部材によって形成するとともに、各分割部材の両端の接合端面のうち少なくとも一方の接合端面に前記接続孔の一部をなす切り欠き部を設け、チューブの端部が分割部材の切り欠き部に係合するように分割部材とチューブとを交互に積み重ねるとともに、各分割部材の軸方向一方の端面に設けた凸部と軸方向他方の端面に設けた凹部とを互いにヘッダーの径方向への移動を規制するように係合することにより、各チューブの端部が各接続孔にそれぞれ接続されたヘッダーを形成するようにしている。 In order to achieve the above object, the present invention provides a cylindrical header for heat medium distribution and a plurality of heat medium distributions that are arranged at intervals in the axial direction of the header and are respectively connected to the side surfaces of the header. In the heat exchanger manufacturing method, the headers are joined to each other in the axial direction of the header. A plurality of divided members are formed, and at least one of the bonded end surfaces of each divided member is provided with a cutout portion forming a part of the connection hole, and the tube end portion is a cutout portion of the divided member. with stacked alternately a dividing member and the tube so as to engage the header to each other and a recess formed in the convex portion and the end face of the other axial provided on one axial end surface of each divided member By engaging so as to restrict the movement of the radial direction, the ends of each tube is to form a header respectively connected to the respective connection holes.

これにより、各チューブの端部が分割部材の切り欠き部に係合するように分割部材とチューブとを交互に積み重ねることにより、各チューブの端部が各接続孔にそれぞれ接続されたヘッダーを形成することができる。また、各分割部材の接合端面に設けられた係合部としての凸部及び凹部が互いにヘッダーの径方向への移動を規制するように係合することから、各分割部材を積み重ねる際、各分割部材同士が容易且つ正確に位置決めされる。 As a result, the divided member and the tube are alternately stacked so that the end of each tube is engaged with the notch of the divided member, thereby forming a header in which the end of each tube is connected to each connection hole. can do. In addition, since the convex portions and the concave portions as the engaging portions provided on the joining end surfaces of the respective divided members engage with each other so as to restrict the movement of the header in the radial direction, The members are easily and accurately positioned.

本発明によれば、各チューブの端部が各接続孔にそれぞれ接続されたヘッダーを容易に形成することができるので、チューブの本数が多い場合でも組立作業が煩雑になることがなく、生産性の向上を図ることができる。また、各分割部材を積み重ねる際、各分割部材同士を容易且つ正確に位置決めすることができるので、組立作業を効率良く行うことができる。 According to the present invention, it is possible to easily form headers in which the end portions of the respective tubes are connected to the respective connection holes, so that the assembly work is not complicated even when the number of tubes is large, and the productivity is increased. Can be improved. Further, when the divided members are stacked, the divided members can be positioned easily and accurately, so that the assembling work can be performed efficiently.

本発明の第１の実施形態を示す熱交換器の斜視図The perspective view of the heat exchanger which shows the 1st Embodiment of this invention ヘッダー部材の上面側斜視図Top side perspective view of header member ヘッダー部材の下面側斜視図Bottom perspective view of header member ヘッダー部材の背面断面図Rear sectional view of header member 上側蓋部材の背面断面図Rear cross-sectional view of upper lid member 下側蓋部材の背面断面図Rear cross-sectional view of the lower lid member チューブの部分斜視図Partial perspective view of tube チューブの側面断面図Side cross-sectional view of tube ヘッダーの組立工程を示す斜視図Perspective view showing assembly process of header ヘッダーの組立工程を示す斜視図Perspective view showing assembly process of header ヘッダーの組立工程を示す部分背面断面図Partial rear sectional view showing the assembly process of the header ヘッダーの部分背面断面図Partial rear sectional view of the header 熱媒体の流通状態を示す熱交換器の正面断面図Front sectional view of the heat exchanger showing the flow state of the heat medium 冷房運転を示すヒートポンプ回路の構成図Configuration diagram of heat pump circuit showing cooling operation 暖房運転を示すヒートポンプ回路の構成図Configuration diagram of heat pump circuit showing heating operation 本発明の第２の実施形態を示す仕切部材の上面側斜視図The upper surface side perspective view of the partition member which shows the 2nd Embodiment of this invention 仕切部材の背面断面図Rear sectional view of partition member 熱媒体の流通状態を示す熱交換器の正面断面図Front sectional view of the heat exchanger showing the flow state of the heat medium チューブの変形例を示す側面断面図Side sectional view showing a modification of the tube 本発明の第３の実施形態に係るヘッダーの組立工程を示す背面断面図Sectional drawing which shows the assembly process of the header which concerns on the 3rd Embodiment of this invention ヘッダーの部分背面断面図Partial rear sectional view of the header

図１乃至図１３は本発明の第１の実施形態を示すもので、例えば車両用空気調和装置の蒸発器、凝縮器またはヒータとして用いられるフィンレス型の熱交換器を示すものである。   FIGS. 1 to 13 show a first embodiment of the present invention, for example, a finless heat exchanger used as an evaporator, a condenser or a heater of a vehicle air conditioner.

この熱交換器は、一対の熱媒体流通用のヘッダー１０と、互いに各ヘッダー１０の軸方向に間隔をおいて配置された複数の熱媒体流通用のチューブ２０とから構成され、各チューブ２０は両端をそれぞれ各ヘッダー１０の側面に接続されている。   This heat exchanger is composed of a pair of heat medium distribution headers 10 and a plurality of heat medium distribution tubes 20 that are spaced apart from each other in the axial direction of each header 10. Both ends are connected to the side surface of each header 10.

各ヘッダー１０は上下方向に延びる角筒状に形成され、互いに熱交換器の幅方向に間隔をおいて配置されている。ヘッダー１０の側面（周壁面）には、各チューブ２０の端部がそれぞれ接続される複数の接続孔１０ａが設けられ、各接続孔１０ａは互いに上下方向に等間隔で配置されている。ヘッダー１０は、互いにヘッダー１０の軸方向に接合される複数のヘッダー部材１１と、ヘッダー１０の上端を閉塞する上側蓋部材１２と、ヘッダー１０の下端を閉塞する下側蓋部材１３とからなり、各ヘッダー部材１１及び各蓋部材１２，１３は分割部材をなす。   Each header 10 is formed in a rectangular tube shape extending in the up-down direction, and is arranged at intervals in the width direction of the heat exchanger. The side surface (circumferential wall surface) of the header 10 is provided with a plurality of connection holes 10a to which end portions of the tubes 20 are connected, and the connection holes 10a are arranged at equal intervals in the vertical direction. The header 10 includes a plurality of header members 11 joined to each other in the axial direction of the header 10, an upper lid member 12 that closes the upper end of the header 10, and a lower lid member 13 that closes the lower end of the header 10, Each header member 11 and each lid member 12 and 13 form a division member.

各ヘッダー部材１１は、アルミニウム等の金属の成型品からなり、ヘッダー１０の周壁の軸方向一部をなすように環状に形成されている。各ヘッダー部材１１は上下方向の端面（接合端面）を他のヘッダー部材１１の上下方向の端面と突き合わせることにより、互いに接合されるようになっており、その上下方向両端面には、接続孔１０ａの一部をなす切り欠き部１４が設けられている。切り欠き部１４は横長に形成され、その底面には複数の凹凸部が幅方向に交互に設けられている。また、ヘッダー部材１１の上下方向の端面には、他のヘッダー部材１１と係合する係合部が設けられ、係合部はヘッダー部材１１の上下方向一方の端面に設けられた凸部１５と上下方向他方の端面に設けられた凹部１６とから形成されている。凸部１５及び凹部１６は切り欠き部１４の両端からヘッダー部材１１の周方向に延びるように形成され、互いに係合することによりヘッダー１０の径方向（軸方向に直交する方向）への移動を規制するようになっている。   Each header member 11 is made of a molded product of metal such as aluminum, and is formed in an annular shape so as to form a part in the axial direction of the peripheral wall of the header 10. Each header member 11 is joined to each other by abutting an end face in the vertical direction (joint end face) with an end face in the vertical direction of the other header member 11. A notch portion 14 is provided that forms part of 10a. The notches 14 are formed in a horizontally long shape, and a plurality of uneven portions are alternately provided in the width direction on the bottom surface. Further, an engaging portion that engages with another header member 11 is provided on the end surface in the vertical direction of the header member 11, and the engaging portion is provided with a convex portion 15 provided on one end surface in the vertical direction of the header member 11. It is formed from the recessed part 16 provided in the other end surface of the up-down direction. The convex portion 15 and the concave portion 16 are formed so as to extend in the circumferential direction of the header member 11 from both ends of the notch portion 14, and are engaged with each other to move the header 10 in the radial direction (direction orthogonal to the axial direction). It comes to regulate.

上側蓋部材１２は、上端面を上面部１２ａによって閉塞され、その下端面をヘッダー部材１１の上端面と接合されるようになっている。上側蓋部材１２の周壁部はヘッダー部材１１と同様の外形をなしており、その下端面にはヘッダー部材１１と同様の切り欠き部１４及び凹部１６が設けられている。   The upper lid member 12 is configured such that the upper end surface is closed by the upper surface portion 12 a and the lower end surface thereof is joined to the upper end surface of the header member 11. A peripheral wall portion of the upper lid member 12 has the same outer shape as the header member 11, and a notch portion 14 and a concave portion 16 similar to the header member 11 are provided on the lower end surface thereof.

下側蓋部材１３は、下端面を底面部１３ａによって閉塞され、その下端面をヘッダー部材１１の下端面と接合されるようになっている。下側蓋部材１３の周壁部はヘッダー部材１１と同様の外形をなしており、その上端面にはヘッダー部材１１と同様の切り欠き部１４及び凸部１５が設けられている。   The lower lid member 13 is closed at the lower end surface by the bottom surface portion 13 a and is joined to the lower end surface of the header member 11 at the lower end surface. A peripheral wall portion of the lower lid member 13 has the same outer shape as the header member 11, and a cutout portion 14 and a convex portion 15 similar to those of the header member 11 are provided on the upper end surface thereof.

各チューブ２０は、アルミニウム等の金属の押出成型品からなり、上下方向の寸法が幅方向の寸法に対して小さい扁平状に形成されている。チューブ２０には、熱媒体流通用の複数の流路２１が互いに幅方向に等間隔で設けられ、各流路２１の内形は四角形状に形成されている。チューブ２０の上面及び下面には複数の凹凸部が幅方向に交互に設けられており、これらの凹凸部は前記切り欠き部１４の凹凸部に係合するようになっている。この場合、チューブ２０の凹凸部は、各流路２１の上下に位置する部分が凸状をなし、各流路２１の間に位置する部分が凹状をなすように形成されている。   Each tube 20 is made of an extruded product of metal such as aluminum, and is formed in a flat shape in which the vertical dimension is smaller than the width dimension. The tube 20 is provided with a plurality of flow channels 21 for circulating the heat medium at equal intervals in the width direction, and the inner shape of each flow channel 21 is formed in a square shape. A plurality of uneven portions are alternately provided in the width direction on the upper surface and the lower surface of the tube 20, and these uneven portions engage with the uneven portions of the notch portion 14. In this case, the concavo-convex portion of the tube 20 is formed such that the portions located above and below each flow channel 21 are convex, and the portions located between the flow channels 21 are concave.

以上の構成からなる熱交換器は、図９及び図１１に示すように、各チューブ２０の端部がヘッダー部材１１の切り欠き部１４に係合するようにヘッダー部材１１とチューブ２０とを交互に積み重ねることにより、互いに接合される一方のヘッダー部材１１の切り欠き部１４と他方のヘッダー部材１１の切り欠き部１４によって接続孔１０ａが形成され、図１０及び図１２に示すように、各チューブ２０の端部が各接続孔１０ａにそれぞれ接続されたヘッダー１０が形成される。その際、各ヘッダー１０の上端及び下端には上側蓋部材１２及び下側蓋部材１３が配置されるとともに、一方のヘッダー１０の上側蓋部材１２には熱媒体流入用の流入パイプ１７が設けられ、他方のヘッダー１０の下側蓋部材１３には熱媒体流出用の流出パイプ１８が設けられる。また、各ヘッダー部材１１及び各蓋部材１２，１３を積み重ねる際、それらの接合端面の凸部１５と凹部１６が互いに係合し、凸部１５及び凹部１６によって各ヘッダー部材１１及び各蓋部材１２，１３の径方向への移動が規制される。この後、炉中でろう付けすることにより、各ヘッダー部材１１、各蓋部材１２，１３、各パイプ１７，１８及び各チューブ２０が接合される。 As shown in FIGS. 9 and 11, the heat exchanger configured as described above has the header member 11 and the tube 20 alternately so that the end of each tube 20 engages with the notch 14 of the header member 11. As shown in FIG. 10 and FIG. 12, each tube has a connection hole 10a formed by the cutout portion 14 of one header member 11 and the cutout portion 14 of the other header member 11 joined together. A header 10 is formed in which the ends of 20 are connected to the respective connection holes 10a. At that time, the upper lid member 12 and the lower lid member 13 are disposed at the upper end and the lower end of each header 10, and the upper lid member 12 of one header 10 is provided with an inflow pipe 17 for heat medium inflow. The lower cover member 13 of the other header 10 is provided with an outflow pipe 18 for outflow of the heat medium. In addition, when the header members 11 and the lid members 12 and 13 are stacked, the convex portions 15 and the concave portions 16 of the joint end surfaces thereof are engaged with each other, and the header members 11 and the lid members 12 are formed by the convex portions 15 and the concave portions 16. , movement in the radial direction 13 is crucified regulations. Then, each header member 11, each lid member 12, 13, each pipe 17, 18 and each tube 20 are joined by brazing in a furnace.

前記熱交換器においては、図１３に示すように流入パイプ１７から一方のヘッダー１０内に流入した熱媒体が一方のヘッダー１０から各チューブ２０を流通して他方のヘッダー１０に流入し、他方のヘッダー１０の流出パイプ１８から流出する。その際、各チューブ２０を流通する熱媒体と、各チューブ２０の外部を流通する流体とが熱交換される。   In the heat exchanger, as shown in FIG. 13, the heat medium flowing into the one header 10 from the inflow pipe 17 flows through the tubes 20 from the one header 10 and flows into the other header 10. It flows out from the outflow pipe 18 of the header 10. At that time, the heat medium flowing through each tube 20 and the fluid flowing outside each tube 20 are subjected to heat exchange.

このように、本実施形態によれば、ヘッダー１０を互いに軸方向に接合される分割部材としての複数のヘッダー部材１１及び各蓋部材１２，１３によって形成するとともに、各ヘッダー部材１１及び各蓋部材１２，１３の接合端面に接続孔１０ａの一部をなす切り欠き部１４を設け、互いに接合される一方のヘッダー部材１１の切り欠き部１４と他方のヘッダー部材１１の切り欠き部１４によって接続孔１０ａを形成するようにしたので、各チューブ２０の端部がヘッダー部材１１の切り欠き部１４に係合するようにヘッダー部材１１とチューブ２０とを交互に積み重ねることにより、各チューブ２０の端部が各接続孔１０ａにそれぞれ接続されたヘッダー１０を形成することができる。これにより、各チューブ２０をヘッダー１０に容易に接続することができ、チューブ２０の本数が多いフィンレス型の熱交換器においても組立作業が煩雑になることがなく、生産性の向上を図ることができる。また、ヘッダー１０に打ち抜き加工によって接続孔１０ａを穿設する必要がないので、各チューブ２０の間隔が狭い場合でも接続孔１０ａを形成することができ、チューブ２０のピッチが小さいフィンレス型の熱交換器に極めて有利である。   As described above, according to the present embodiment, the header 10 is formed by the plurality of header members 11 and the lid members 12 and 13 as the divided members joined to each other in the axial direction, and each header member 11 and each lid member. A cutout portion 14 forming a part of the connection hole 10a is provided on the joining end surfaces of the first and second header members 13 and 13, and the connection hole is formed by the cutout portion 14 of one header member 11 and the cutout portion 14 of the other header member 11 that are joined together 10a is formed, the header member 11 and the tube 20 are alternately stacked so that the end of each tube 20 engages with the notch portion 14 of the header member 11, so that the end of each tube 20 is The header 10 connected to each connection hole 10a can be formed. As a result, each tube 20 can be easily connected to the header 10, and assembly work is not complicated even in a finless heat exchanger having a large number of tubes 20, thereby improving productivity. it can. Further, since it is not necessary to drill the connection holes 10a in the header 10 by punching, the connection holes 10a can be formed even when the interval between the tubes 20 is narrow, and the finless heat exchange with a small pitch of the tubes 20 is possible. Very advantageous for the vessel.

また、各ヘッダー部材１１の接合端面に、互いにヘッダー１０の径方向への移動を規制するように係合する係合部としての凸部１５及び凹部１６を設けたので、各ヘッダー部材１１を積み重ねる際、各ヘッダー部材１１同士を容易且つ正確に位置決めすることができ、組立作業を効率良く行うことができる。   Moreover, since the convex part 15 and the concave part 16 as an engaging part which engage so that the movement to the radial direction of the header 10 mutually may be provided in the joining end surface of each header member 11, each header member 11 is stacked. At this time, the header members 11 can be easily and accurately positioned, and the assembly work can be performed efficiently.

この場合、凸部１５及び凹部１６をヘッダー部材１１の周方向に延びるように形成したので、凸部１５及び凹部１６によって各ヘッダー部材１１間をシールすることができ、各ヘッダー部材１１間の密閉性を高めることができる。   In this case, since the convex portion 15 and the concave portion 16 are formed so as to extend in the circumferential direction of the header member 11, it is possible to seal between the header members 11 by the convex portion 15 and the concave portion 16, and to seal between the header members 11. Can increase the sex.

図１４及び図１５は前記熱交換器を蒸発器、室外側熱交換器またはヒータとして用いたヒートポンプ式車両用空気調和装置の回路図を示すものである。   14 and 15 show circuit diagrams of a heat pump type vehicle air conditioner using the heat exchanger as an evaporator, an outdoor heat exchanger or a heater.

同図に示すヒートポンプ回路は、冷媒を吐出する圧縮機３０と、圧縮機３０の下流側に接続されたヒータ３１と、ヒータ３１の下流側に接続された第１の膨張弁３２と、第１の膨張弁３２の下流側に接続された室外側熱交換器３３と、室外側熱交換器３３の下流側に接続された第２の膨張弁３４と、第２の膨張弁３４の下流側に接続された蒸発器３５と、蒸発器３５の下流側に接続されたアキュムレータ３６とを備え、アキュムレータ３６の下流側には圧縮機３０が接続されている。ヒータ３１の下流側には第１の膨張弁３２をバイパスする第１のバイパス回路３７が設けられ、第１のバイパス回路３７は第１の電磁弁３８によって開閉するようになっている。また、室外側熱交換器３３の下流側には第２の膨張弁３４及び蒸発器３５をバイパスする第２のバイパス回路３９が設けられ、第２のバイパス回路３９は第２の電磁弁４０によって開閉するようになっている。また、ヒータ３１及び蒸発器３５は、車両の室内空気を流通するダクト５０内に配置されている。   The heat pump circuit shown in the figure includes a compressor 30 that discharges refrigerant, a heater 31 that is connected to the downstream side of the compressor 30, a first expansion valve 32 that is connected to the downstream side of the heater 31, and a first The outdoor heat exchanger 33 connected to the downstream side of the expansion valve 32, the second expansion valve 34 connected to the downstream side of the outdoor heat exchanger 33, and the downstream side of the second expansion valve 34. A connected evaporator 35 and an accumulator 36 connected to the downstream side of the evaporator 35 are provided, and a compressor 30 is connected to the downstream side of the accumulator 36. A first bypass circuit 37 that bypasses the first expansion valve 32 is provided downstream of the heater 31, and the first bypass circuit 37 is opened and closed by a first electromagnetic valve 38. A second bypass circuit 39 that bypasses the second expansion valve 34 and the evaporator 35 is provided on the downstream side of the outdoor heat exchanger 33, and the second bypass circuit 39 is provided by the second electromagnetic valve 40. It opens and closes. Moreover, the heater 31 and the evaporator 35 are arrange | positioned in the duct 50 which distribute | circulates the indoor air of a vehicle.

前記空気調和装置において、冷房運転を行うときは、ヒートポンプ回路の第１の電磁弁３８を開放し、第２の電磁弁４０を閉鎖する。これにより、図１４に示すように、圧縮機３０から吐出した冷媒が、ヒータ３１、室外側熱交換器３３、第２の膨張弁３４、蒸発器３５、アキュムレータ３６に順次流通して圧縮機３０に吸入され、ダクト５０を流通する空気が蒸発器３５によって冷却される。   In the air conditioner, when the cooling operation is performed, the first electromagnetic valve 38 of the heat pump circuit is opened, and the second electromagnetic valve 40 is closed. As a result, as shown in FIG. 14, the refrigerant discharged from the compressor 30 flows in sequence to the heater 31, the outdoor heat exchanger 33, the second expansion valve 34, the evaporator 35, and the accumulator 36, and the compressor 30. The air flowing through the duct 50 is cooled by the evaporator 35.

また、前記空気調和装置において、冷房運転を行うときは、ヒートポンプ回路３０の第１の電磁弁３８を閉鎖し、第２の電磁弁４０を開放する。これにより、図１５に示すように、圧縮機３０から吐出した冷媒が、ヒータ３１、第１の膨張弁３２、室外側熱交換器３３、アキュムレータ３６に順次流通して圧縮機３０に吸入され、ダクト５０を流通する空気がヒータ３１によって加熱される。   In the air conditioner, when the cooling operation is performed, the first electromagnetic valve 38 of the heat pump circuit 30 is closed and the second electromagnetic valve 40 is opened. As a result, as shown in FIG. 15, the refrigerant discharged from the compressor 30 sequentially flows through the heater 31, the first expansion valve 32, the outdoor heat exchanger 33, and the accumulator 36 and is sucked into the compressor 30. The air flowing through the duct 50 is heated by the heater 31.

図１６乃至図１８は本発明の第２の実施形態を示すもので、前記実施形態と同等の構成部分には同一の符号を付して示す。   FIGS. 16 to 18 show a second embodiment of the present invention, and the same reference numerals are given to the same components as those of the above-described embodiment.

本実施形態の熱交換器におけるヘッダー１０は、ヘッダー１０内を軸方向に仕切る仕切部材１９を有し、仕切部材１９はヘッダー１０を構成する分割部材のうち一部の分割部材をなす。仕切部材１９の周壁部はヘッダー部材１１と同様の外形をなしており、その上端面及び下端面にはヘッダー部材１１と同様の切り欠き部１４、凸部１５及び凹部１６が設けられている。また、仕切部材１９の内側には仕切部１９ａが設けられ、仕切部１９ａによって仕切部材１９内が上下に仕切られている。   The header 10 in the heat exchanger of the present embodiment has a partition member 19 that partitions the inside of the header 10 in the axial direction, and the partition member 19 forms a part of the divided members that constitute the header 10. A peripheral wall portion of the partition member 19 has the same outer shape as the header member 11, and a cutout portion 14, a convex portion 15, and a concave portion 16 similar to those of the header member 11 are provided on the upper end surface and the lower end surface thereof. Moreover, the partition part 19a is provided inside the partition member 19, and the inside of the partition member 19 is partitioned up and down by the partition part 19a.

本実施形態では、一方のヘッダー１０の軸方向上方寄りに一つの仕切部材１９が配置され、他方のヘッダー１０の軸方向下方寄りに他の一つの仕切部材１９が配置されている。この場合、仕切部材１９はヘッダー部材１１の間に配置され、上下のヘッダー部材１１にそれぞれ接合されるようになっている。   In the present embodiment, one partition member 19 is disposed on the upper side in the axial direction of one header 10, and another partition member 19 is disposed on the lower side in the axial direction of the other header 10. In this case, the partition member 19 is disposed between the header members 11 and is joined to the upper and lower header members 11, respectively.

本実施形態の熱交換器では、図１８に示すように流入パイプ１７から一方のヘッダー１０内の仕切部材１９の上方に流入した熱媒体が一方のヘッダー１０から上方の約１／３のチューブ２０を流通して他方のヘッダー１０内の仕切部材１９の上方に流入し、上下方向中央側の約１／３のチューブ２０を流通して一方のヘッダー１０内の仕切部材１９の下方に流入する。この後、一方のヘッダー１０内の仕切部材１９の下方の熱媒体が一方のヘッダー１０から下方の約１／３のチューブ２０を流通して他方のヘッダー１０内の仕切部材１９の下方に流入し、他方のヘッダー１０の流出パイプ１８から流出する。即ち、熱媒体が各チューブ２０を蛇行状に流通し、各チューブ２０を流通する熱媒体と、各チューブ２０の外部を流通する流体とが熱交換される。   In the heat exchanger of the present embodiment, as shown in FIG. 18, the heat medium that has flowed into the upper part of the partition member 19 in one header 10 from the inflow pipe 17 is about 1/3 of the tube 20 above the one header 10. And flows into the upper part of the partition member 19 in the other header 10, flows through about 1/3 of the tube 20 on the center side in the vertical direction, and flows into the lower part of the partition member 19 in the one header 10. Thereafter, the heat medium below the partition member 19 in one header 10 flows from the one header 10 through the lower tube about 20 and flows below the partition member 19 in the other header 10. , And flows out from the outflow pipe 18 of the other header 10. That is, the heat medium flows in a meandering manner through each tube 20, and heat exchange between the heat medium flowing through each tube 20 and the fluid flowing outside each tube 20 is performed.

このように、本実施形態によれば、ヘッダー１０を構成する各分割部材のうち一部の分割部材を仕切部材１９によって形成し、仕切部材１９に設けた仕切部１９ａによってヘッダー１０内を軸方向に仕切るようにしたので、各チューブ２０を流通する熱媒体を蛇行状に流通させることができ、熱交換効率の向上を図ることができる。   Thus, according to the present embodiment, some of the divided members constituting the header 10 are formed by the partition member 19, and the interior of the header 10 is axially formed by the partition portion 19 a provided on the partition member 19. Therefore, the heat medium flowing through each tube 20 can be circulated in a meandering manner, and the heat exchange efficiency can be improved.

尚、前記第２の実施形態では、仕切部材１９を各ヘッダー１０に一つずつ設けたものを示したが、複数ずつ設けて蛇行回数を多くするようにしてもよい。また、冷媒が同一方向に流通するチューブ２０の割合を仕切部材１９の位置によって上流側と下流側で異なるようにすることも可能である。   In the second embodiment, one partition member 19 is provided for each header 10; however, a plurality of meanders may be provided by providing a plurality of partition members 19 one by one. In addition, the ratio of the tubes 20 through which the refrigerant flows in the same direction can be made different between the upstream side and the downstream side depending on the position of the partition member 19.

また、前記各実施形態では、チューブ２０の各流路２１の内形を四角形状に形成したものを示したが、図１９に示すチューブ２０のように楕円形状の流路２２を設けるようにしてもよい。   Further, in each of the above embodiments, the inner shape of each flow path 21 of the tube 20 is formed in a square shape, but an elliptical flow path 22 is provided as in the tube 20 shown in FIG. Also good.

図２０及び図２１は本発明の第３の実施形態を示すもので、前記実施形態と同等の構成部分には同一の符号を付して示す。   20 and 21 show a third embodiment of the present invention, in which components equivalent to those of the above-described embodiment are denoted by the same reference numerals.

前記第１の実施形態では、ヘッダー部材１１の各接合端面のうち上端及び下端の両方の接合端面にそれぞれ切り欠き部１４を設け、互いに接合されるヘッダー部材１１のうち上方に位置するヘッダー部材１１の切り欠き部１４と下方に位置するヘッダー部材１１の切り欠き部１４によって接続孔１０ａを形成するようにしたものを示したが、本実施形態ではヘッダー部材１１の下端の接合端面のみに切り欠き部１４が設けられ、その上端の接合端面は平坦に形成されている。尚、その他の構成は第１の実施形態と同様である。   In the first embodiment, the cutout portions 14 are provided on both the upper end and the lower end of the joining end surfaces of the header member 11, and the header member 11 positioned above the header members 11 joined to each other. Although the connection hole 10a is shown to be formed by the notch 14 of the header member 11 and the notch 14 of the header member 11 positioned below, in the present embodiment, the notch is notched only at the joining end surface of the lower end of the header member 11. The part 14 is provided, and the joining end face at the upper end thereof is formed flat. Other configurations are the same as those of the first embodiment.

即ち、本実施形態では、互いに接合されるヘッダー部材１１のうち上方に位置するヘッダー部材１１の切り欠き部１４と下方に位置するヘッダー部材１１の上端の接合端面によって接続孔１０ａを形成するようにしている。この場合、本実施形態では、チューブ２０の上面のみに凹凸部が設けられ、チューブ２０の下面は平坦に形成されている。また、本実施形態では、下側蓋部材１３には切り欠き部１４が設けられておらず、その上端の接合端面は平坦に形成されている。   In other words, in the present embodiment, the connection hole 10a is formed by the cutout portion 14 of the header member 11 located above the header members 11 joined together and the joining end face of the upper end of the header member 11 located below. ing. In this case, in this embodiment, an uneven part is provided only on the upper surface of the tube 20, and the lower surface of the tube 20 is formed flat. Moreover, in this embodiment, the notch part 14 is not provided in the lower side cover member 13, and the joining end surface of the upper end is formed flat.

尚、前記第３の実施形態においても、第２の実施形態のように仕切部材１９を設けてヘッダー１０内を軸方向に仕切るようにしてもよい。この場合、仕切部材１９には、第３の実施形態のヘッダー部材１１と同様、下端の接合端面のみに切り欠き部１４が設けられる。   In the third embodiment, the partition member 19 may be provided to partition the header 10 in the axial direction as in the second embodiment. In this case, similarly to the header member 11 of the third embodiment, the partition member 19 is provided with the cutout portion 14 only on the joint end surface at the lower end.

また、前記第３の実施形態では、ヘッダー部材の下端の接合端面のみに切り欠き部１４を設けるようにしたものを示したが、上端の接合端面のみに切り欠き部１４を設けるようにしてもよい。この場合、各チューブ２０は、前記第３の実施形態とは上下反対向きに配置される。   In the third embodiment, the notch portion 14 is provided only on the joining end surface at the lower end of the header member. However, the notch portion 14 may be provided only on the joining end surface at the upper end. Good. In this case, each tube 20 is arranged upside down with respect to the third embodiment.

１０…ヘッダー、１０ａ…接続孔、１１…ヘッダー部材、１２…上側蓋部材、１３…下側蓋部材、１４…切り欠き部、１５…凸部、１６…凹部、１９…仕切部材、１９ａ…仕切部、２０…チューブ。   DESCRIPTION OF SYMBOLS 10 ... Header, 10a ... Connection hole, 11 ... Header member, 12 ... Upper lid member, 13 ... Lower lid member, 14 ... Notch part, 15 ... Convex part, 16 ... Recessed part, 19 ... Partition member, 19a ... Partition Part, 20 ... tube.

Claims (4)

筒状に形成された熱媒体流通用のヘッダーと、互いにヘッダーの軸方向に間隔をおいて配置され、それぞれヘッダーの側面に接続される複数の熱媒体流通用のチューブとを備え、ヘッダーの側面には各チューブの端部がそれぞれ接続される複数の接続孔を設けた熱交換器において、
前記ヘッダーを、互いにヘッダーの軸方向に接合される複数の分割部材によって形成するとともに、
各分割部材の両端の接合端面のうち少なくとも一方の接合端面に前記接続孔の一部をなす切り欠き部を設け、
互いに接合される各分割部材の接合端面間に前記切り欠き部によって接続孔を形成し、
各分割部材の接合端面に、互いにヘッダーの径方向への移動を規制するように係合する係合部を設け、
係合部を分割部材の軸方向一方の端面に設けた凸部と軸方向他方の端面に設けた凹部とから形成した
ことを特徴とする熱交換器。 A header for heat medium distribution formed in a cylindrical shape, and a plurality of tubes for heat medium distribution that are spaced apart from each other in the axial direction of the header and connected to the side surfaces of the header. In the heat exchanger provided with a plurality of connection holes to which the end of each tube is connected,
The header is formed by a plurality of divided members joined to each other in the axial direction of the header,
Provide a notch that forms part of the connection hole on at least one of the joining end faces of both ends of each divided member;
A connection hole is formed by the notch between the joining end faces of the divided members joined together ,
Provided on the joint end face of each divided member is an engaging portion that engages with each other so as to restrict movement of the header in the radial direction,
The engagement portion is formed of a convex portion provided on one end surface in the axial direction of the split member and a concave portion provided on the other end surface in the axial direction . 前記係合部を分割部材の周方向に延びるように形成した
ことを特徴とする請求項１記載の熱交換器。 The heat exchanger of claim 1, wherein a formed so as to extend the engagement portions in the circumferential direction of the dividing member. 前記各分割部材のうち一部の分割部材に、ヘッダー内を軸方向に仕切る仕切部を設けた
ことを特徴とする請求項１または２記載の熱交換器。 The heat exchanger according to claim 1 or 2, wherein a partition portion that partitions the inside of the header in the axial direction is provided on some of the divided members. 筒状に形成された熱媒体流通用のヘッダーと、互いにヘッダーの軸方向に間隔をおいて配置され、それぞれヘッダーの側面に接続される複数の熱媒体流通用のチューブとを備え、ヘッダーの側面には各チューブの端部がそれぞれ接続される複数の接続孔を設けた熱交換器の製造方法において、
前記ヘッダーを、互いにヘッダーの軸方向に接合される複数の分割部材によって形成するとともに、
各分割部材の両端の接合端面のうち少なくとも一方の接合端面に前記接続孔の一部をなす切り欠き部を設け、
チューブの端部が分割部材の切り欠き部に係合するように分割部材とチューブとを交互に積み重ねるとともに、各分割部材の軸方向一方の端面に設けた凸部と軸方向他方の端面に設けた凹部とを互いにヘッダーの径方向への移動を規制するように係合することにより、各チューブの端部が各接続孔にそれぞれ接続されたヘッダーを形成する
ことを特徴とする熱交換器の製造方法。 A header for heat medium distribution formed in a cylindrical shape, and a plurality of tubes for heat medium distribution that are spaced apart from each other in the axial direction of the header and connected to the side surfaces of the header. In the manufacturing method of the heat exchanger provided with a plurality of connection holes to which the ends of each tube are respectively connected,
The header is formed by a plurality of divided members joined to each other in the axial direction of the header,
Provide a notch that forms part of the connection hole on at least one of the joining end faces of both ends of each divided member;
The split member and the tube are alternately stacked so that the end portion of the tube engages with the notch of the split member, and the convex portion provided on one axial end surface of each split member and the other axial end surface are provided. The end of each tube forms a header connected to each connection hole by engaging the recessed portion with each other so as to restrict the movement of the header in the radial direction of the heat exchanger. Production method.
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