WO2011101910A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2011101910A1
WO2011101910A1 PCT/JP2010/001069 JP2010001069W WO2011101910A1 WO 2011101910 A1 WO2011101910 A1 WO 2011101910A1 JP 2010001069 W JP2010001069 W JP 2010001069W WO 2011101910 A1 WO2011101910 A1 WO 2011101910A1
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WO
WIPO (PCT)
Prior art keywords
tank
heat exchanger
bulging
bulging portion
exchanger according
Prior art date
Application number
PCT/JP2010/001069
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French (fr)
Japanese (ja)
Inventor
千葉朋広
高橋優輝
Original Assignee
サンデン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サンデン株式会社 filed Critical サンデン株式会社
Priority to PCT/JP2010/001069 priority Critical patent/WO2011101910A1/en
Priority to CN2010800642465A priority patent/CN102753929A/en
Publication of WO2011101910A1 publication Critical patent/WO2011101910A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0248—Arrangements for sealing connectors to header boxes

Definitions

  • the present invention relates to a heat exchanger in which a pipe joint for connecting a pipe into which a heat medium is introduced is connected.
  • a heat exchanger used in a heater core of a vehicle air conditioner in which a pipe as an external pipe for introducing and removing cooling water is connected to a tank unit (for example, Patent Document 1). .
  • a communication member (pipe joint) for connecting a pipe having a larger diameter than the height in the cross section of the tank portion is provided at the engine coolant (warm water) outlet inlet of the tank portion.
  • the object of the present invention is to allow the heat medium to be distributed almost evenly through each heat exchange tube while responding to the demand for downsizing and weight reduction of the tank part, and hence downsizing and weight reduction of the entire heat exchanger.
  • Another object is to provide a heat exchanger excellent in fluidity of the heat medium.
  • a heat exchanger includes tank portions on the inlet side and the outlet side of a heat medium, and communicates between the tank portions with a plurality of heat exchange tubes arranged in parallel.
  • an inlet side pipe joint connected to an external pipe is joined to one end portion in the longitudinal direction of the heat medium inlet side tank portion, and an outlet side pipe connected to the external pipe at one end portion in the longitudinal direction of the heat medium outlet side tank portion.
  • an outwardly bulging portion is provided in the pipe joint joining portion of at least one tank portion.
  • the bulging portion is provided at the pipe joint joint portion of at least one tank portion of the heat medium inlet side or outlet side, the tank portion is connected to the pipe joint joint portion.
  • other portions can be formed in different diameters, and the degree of freedom in designing the tank portion can be increased.
  • a tank part is reduced in size by forming a tank part so that an outer diameter may become small in a site
  • the tank part so that the inner diameter of the other part is smaller than the pipe joint joint part, the weight of the tank part when the heat medium is filled therein is reduced.
  • the bulging portion is formed so that the end surface crosses a part of the cross section of the pipe joint.
  • the bulging portion is formed to be a curved bulging portion having an end surface having a curved bulging shape.
  • the bulging portion is provided at a central portion in the tank width direction.
  • the fluidity of the heat medium in the heat exchange tube near the pipe joint joint is improved. Furthermore, since the bulging part is also provided in the outlet side tank part, flow directivity from the heat exchange tube in the vicinity of the pipe joint joint to the outlet side pipe is provided, and the heat exchange tube in the vicinity of the pipe joint joint is provided. The fluidity of the internal heat medium is further improved.
  • the bulging portion can be formed to be a rectangular bulging portion having a substantially rectangular end surface. That is, the end face of the bulging portion can be formed in a shape that bulges uniformly in a certain amount in the tank width direction, not in a shape that protrudes in part in the tank width direction as described above.
  • the cross section of the pipe joint can be enlarged in the tank width direction, and the cross sectional area of the internal flow path of the pipe joint can be increased.
  • the cross-sectional shape of the internal flow path of the pipe joint is circular for external piping with respect to the pipe joint portion on the external piping connection side, and for the connection side portion to the tank portion, for example, in the tank width direction
  • An ellipse or an ellipse having a major axis of By doing so, even when the diameter of the pipe (external piping) connected to the pipe joint is relatively large, it is not necessary to enlarge the cross section of the tank joint connection side portion of the pipe joint in the tank height direction. As a result, an increase in the height of the tank portion can be suppressed.
  • the tank portion includes a constant cross-sectional portion having a substantially constant cross-sectional shape in a portion other than the bulging portion in the longitudinal direction.
  • the bulging portion is formed in a tapered shape and connected to the constant cross section.
  • the present invention can be suitably applied to a heat exchanger in which the flow path of the heat medium has a one-pass structure.
  • a heat exchanger in which the flow path of the heat medium has a one-pass structure.
  • there is no partition inside the tank part so the flow of each heat exchange tube is not sufficiently uniform, and there is a risk that a single flow is likely to occur.
  • the fluidity of the heat exchange tube in the vicinity of the joint portion of the pipe joint tends to deteriorate.
  • the heat exchanger of the present invention can be suitably used for a heater core of a vehicle air conditioner that is particularly required to be reduced in size and weight.
  • the bulging portion is provided in the pipe joint joint portion of the tank portion on the inlet side or the outlet side of the heat medium, the outer diameter at the other portion than the pipe joint joint portion.
  • the tank portion By forming the tank portion so as to be small, the tank portion can be reduced in size and weight. Moreover, it becomes possible to improve the fluidity
  • the heat exchanger which concerns on one embodiment of this invention is shown, (A) is a perspective view of the state before a pipe is connected, (B) is a perspective view of the state where the pipe was connected.
  • the heat exchanger 1 of FIG. 1 is shown, (A) is a front view, (B) is a left side view, (C) is a right side view.
  • disassembly state of the heat exchanger 1 of FIG. 3 shows a disassembled state of the heat exchanger 1 in FIG.
  • FIG. 3 is a partially enlarged perspective view in the vicinity of the pipe joint, (B) is a partially enlarged perspective view in the vicinity of the tank member 7 b, and (C) is (A) and ( It is a partial expansion perspective view of the middle vicinity of B).
  • 3A is a partial enlarged perspective view of the vicinity of the bulging portion 12 as viewed from above
  • FIG. 3B is a partial enlarged perspective view of the vicinity of the bulging portion 12 as viewed from below.
  • FIG. 4 is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed from above.
  • the heat exchanger which concerns on the other embodiment of this invention is shown, (A) is a perspective view of the state before a pipe is connected, (B) is a perspective view of the state where the pipe was connected.
  • the heat exchanger 20 of FIG. 6 is shown, (A) is a front view, (B) is a left side view, and (C) is a right side view.
  • disassembly state of the heat exchanger 20 of FIG. 8 shows a disassembled state of the heat exchanger 20 in FIG.
  • FIG. 8 is a partially enlarged perspective view in the vicinity of the pipe joint
  • (B) is a partially enlarged perspective view in the vicinity of the tank member 17b
  • (C) is (A) and ( It is a partial expansion perspective view of the middle vicinity of B).
  • 8A is a partial enlarged perspective view of the vicinity of the bulging portion 22 as viewed from above
  • FIG. 8B is a partial enlarged perspective view of the vicinity of the bulging portion 22 as viewed from below.
  • FIG. 4 is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed from above.
  • FIG. 1 shows a heat exchanger 1 according to an embodiment of the present invention, in which (A) is a perspective view of a state before a pipe is connected to pipe joints 2 and 3, and (B) is a pipe joint 2.
  • 3 is a perspective view of a state in which pipes 4 and 5 are connected to 3 respectively.
  • the flow of the heat medium is introduced into the heat exchanger 1 through the inlet side pipe 4 connected to the inlet side pipe joint 2 of the heat exchanger 1 and discharged through the outlet side pipe 5. It has become a trend.
  • the heat medium flows into the inlet side tank unit 6 through the inlet side pipe 4.
  • a plurality of heat exchange tubes 8 are arranged in parallel between the inlet side tank unit 6 and the outlet side tank unit 7, and the tank units 6 and 7 communicate with each other by the heat exchange tube 8.
  • the heat exchange tube 8 When the heat medium in the inlet side tank unit 6 is transferred to the outlet side tank unit 7 through the heat exchange tube 8, heat is exchanged with the external fluid.
  • the heat medium in the outlet side tank unit 7 is discharged to the outside of the heat exchanger 1 through the outlet side pipe 5 connected to the outlet side pipe joint 3.
  • FIG. 2 shows the heat exchanger 1 of FIG. 1, wherein (A) is a front view, (B) is a left side view, and (C) is a right side view.
  • a plurality of heat exchange tubes 8 communicating with each other of the tanks 6 and 7 are arranged in the tank longitudinal direction and alternately stacked with a plurality of heat exchange fins 9, End plates 10 are provided at both ends in the stacking direction.
  • bulging parts 11 and 12 to the outside of the tank are formed in a tapered shape, and partially cross the cross section of the pipe joints 2 and 3 respectively.
  • the tank portions 6 and 7 are formed so as to have a substantially constant cross-sectional shape at portions other than the bulging portions 11 and 12. Yes.
  • FIG. 3 is an exploded perspective view showing a state in which the heat exchanger 1 of FIG. 1 is disassembled.
  • the pipe joints 2 and 3 are joined to one end of the tank members 6a and 7a in the tank longitudinal direction, and the tank members 6b and 7b are joined to the other ends, respectively.
  • the tank members 6c and 7c are formed with bulging portions 11 and 12, respectively.
  • the bulging portions 11 and 12 are curved and bulged in a direction in which the cross-sectional areas of the tank portions 6 and 7 are enlarged, and are fitted to the outer surfaces of the pipe joints 2 and 3, respectively.
  • the tank member 6a, 6b, 6c and the pipe joint 2 form the inner wall of the tank portion 6.
  • FIG. 3 shows an example of a heat exchanger having a one-pass structure in which the flow direction of the heat medium in all the heat exchange tubes 8 is the same direction, but a predetermined position between the tank members 6a and 6c. It is also possible to form a heat exchanger having a structure other than the one-pass structure in which the flow direction of the heat medium in the heat exchange tube 8 is not uniform by partitioning the tank unit 6 into a plurality of chambers. Further, the inner wall of the tank portion 7 is formed by the tank members 7 a, 7 b, 7 c and the pipe joint 3 on the outlet side as well as the inlet side.
  • the bulging portion 12 formed at one end in the tank longitudinal direction of the tank member 7c is formed in a curved shape that bulges in the direction in which the cross-sectional area of the tank portion 7 is enlarged.
  • the tank member 7b is provided with an engagement protrusion 14 that can be engaged with the engagement hole 13 on the tank member 7c, and the engagement protrusion 14 is engaged with the engagement hole 13.
  • the inner wall of the tank portion 7 on the side opposite to the pipe joint joint is formed by brazing in the state where the tank portion 7 is brazed.
  • a flat heat exchange tube 8 formed by bending a flat plate is connected to the tank members 6c and 7c by brazing. In this way, the tank portions 6 and 7 are communicated with the heat exchange tube 8.
  • FIGS. 5 is a partially enlarged view of the tank member 7c of FIG. 3, in which (A) is a partially enlarged perspective view of the vicinity of the bulging portion 12 as viewed obliquely from above, and (B) is the vicinity of the bulging portion 12. Is a partially enlarged perspective view of the engagement hole 13 viewed from obliquely below, and (C) is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed obliquely from above.
  • the bulging portion 12 has a curved and bulging shape at the center in the tank width direction of the tank member 7c forming the outlet side tank portion 7. Is formed.
  • Such a bulging portion 12 can be formed by, for example, deep drawing.
  • the tank member 6c forming the inlet side tank portion 6 can be formed in the same manner as the tank member 7c.
  • FIG. 6A and 6B show a heat exchanger 20 according to another embodiment of the present invention, in which FIG. 6A is a perspective view before a pipe is connected to the pipe joints 2 and 3, and FIG. 6B is a pipe joint. It is a perspective view of the state where pipes 4 and 5 are connected to 2 and 3, respectively.
  • FIG. 6B the flow of the heat medium is introduced into the heat exchanger 20 through the inlet side pipe 4 connected to the inlet side pipe joint 2 of the heat exchanger 20 and discharged through the outlet side pipe 5. It has become a trend. First, the heat medium flows into the inlet side tank portion 16 through the inlet side pipe 4.
  • a plurality of heat exchange tubes 8 are arranged in parallel between the inlet side tank unit 16 and the outlet side tank unit 17, and the tank units 16 and 17 are communicated with each other by the heat exchange tube 8.
  • the heat exchange tube 8 When the heat medium in the inlet side tank unit 16 is transferred to the outlet side tank unit 17 through the heat exchange tube 8, heat is exchanged with the external fluid.
  • the heat medium in the outlet side tank unit 17 is discharged to the outside of the heat exchanger 20 through the outlet side pipe 5 connected to the outlet side pipe joint 3.
  • FIG. 7 shows the heat exchanger 20 of FIG. 6, wherein (A) is a front view, (B) is a left side view, and (C) is a right side view.
  • a plurality of heat exchange tubes 8 communicating with each other of the tanks 16 and 17 are arranged in the tank longitudinal direction, and are stacked alternately with the plurality of heat exchange fins 9, End plates 10 are provided at both ends in the stacking direction.
  • the pipe joints 2 and 3 joints of the tank parts 16 and 17 are formed with tapered portions 21 and 22 outwardly from the tank, and partially cross the cross sections of the pipe joints 2 and 3 respectively. Yes.
  • the tank portions 16 and 17 are formed so as to have a substantially constant cross-sectional shape at portions other than the bulging portions 21 and 22.
  • Yes. 6 and 7 are provided in the center in the tank direction, and have the curved bulging portions 11 and 12 having end surfaces with curved bulging shapes. , 7, there are rectangular bulging portions 21, 22 having a substantially rectangular end surface bulging uniformly in the tank width direction at the pipe joint joint portion.
  • FIGS. 6 to 10 are the same as FIGS. 1 to 5, and therefore, the parts having the same description will be denoted by the same component numbers and the description thereof will be omitted.
  • FIG. 8 is an exploded perspective view showing a state in which the heat exchanger 20 of FIG. 6 is disassembled.
  • pipe joints 2 and 3 are joined to one end of the tank members 16 a and 17 a in the tank longitudinal direction, and tank members 16 b and 17 b are joined to the other ends, respectively.
  • the tank members 16c and 17c are formed with bulging portions 21 and 22, respectively.
  • the bulging portions 21 and 22 bulge in directions in which the cross-sectional areas of the tank portions 16 and 17 are enlarged, and are fitted to the outer surfaces of the pipe joints 2 and 3, respectively.
  • the tank member 16a, 16b, 16c and the pipe joint 2 form the inner wall of the tank portion 16.
  • the heat exchanger 8 shows an example of a heat exchanger having a one-pass structure in which the heat medium flows in all the heat exchange tubes 8 in the same direction.
  • the inner wall of the tank portion 17 is formed by the tank members 17a, 17b, 17c and the pipe joint 3 in the same manner as the inlet side.
  • FIG. 9 is a partially enlarged view of the disassembled state of the heat exchanger 20 shown in FIG. 8,
  • (A) is a partially enlarged perspective view in the vicinity of the pipe joint 3, and (B) is in the vicinity of the tank member 17b.
  • (C) is the partial expansion perspective view of the intermediate vicinity of (A) and (B).
  • the bulging portion 22 formed at one end in the tank longitudinal direction of the tank member 17c is formed in a shape bulging in a direction in which the cross-sectional area of the tank portion 17 is enlarged. By forming such a bulging portion 22, it is possible to reduce the size of the tank portion 17 while securing a joint portion between the bulging portion 22 and the pipe joint 3.
  • the diameter of the pipe connected to the pipe joint is relatively large by forming the bulging portion 22 into a shape having a substantially rectangular end surface that is uniformly bulged by a certain amount in the tank width direction.
  • the section of the pipe joint 3 to which the tank portion 17 is connected need not be enlarged in the tank height direction, and as a result, an increase in the height of the tank portion 17 can be suppressed. It becomes.
  • the tank member 17b is provided with an engagement protrusion 14 that can be engaged with the engagement hole 13 on the tank member 17c, and the engagement protrusion 14 is engaged with the engagement hole 13.
  • the inner wall of the tank portion 17 on the side opposite to the pipe joint joint portion is formed by brazing in the state where the tank portion 17 is brazed.
  • a flat heat exchange tube 8 formed by bending a flat plate is connected to the tank members 16c and 17c by brazing. In this way, the tank portions 16 and 17 are communicated with the heat exchange tube 8.
  • FIG. 10 is a partially enlarged view of the tank member 17c of FIG. 8, in which (A) is a partially enlarged perspective view of the vicinity of the bulging portion 22 as viewed obliquely from above, and (B) is the vicinity of the bulging portion 22. Is a partially enlarged perspective view of the engagement hole 13 viewed from obliquely below, and (C) is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed obliquely from above.
  • the bulging portion 22 is formed in a shape that uniformly bulges by a certain amount in the tank width direction of the tank member 17c forming the outlet side tank portion 17.
  • Such a bulging portion 22 can be formed by, for example, deep drawing.
  • the tank member 16c forming the inlet side tank portion 16 can be formed in the same manner as the tank member 17c.
  • the heat exchanger according to the present invention is often mounted in a narrow space, and the weight of the load affects fuel consumption. Therefore, there is a great demand for downsizing and weight reduction of the vehicle air conditioner. It is suitably used as a heat exchanger used for the heater core.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Provided is a heat exchanger having an excellent flowability of a heat medium, which can substantially uniformly circulate a heat medium in heat exchange tubes while reducing the size and the weight of a tank portion and thus the reduction of the size and the weight of the entirety of the heat exchanger. In the heat exchanger, tank portions are provided on the heat medium inlet side and the heat medium outlet side; a plurality of heat exchange tubes arranged in parallel communicate with the tank portions; an inlet-side pipe joint to be connected to an external pipe is connected to an end portion of the heat medium inlet side tank portion in the longitudinal direction; and an outlet-side pipe joint to be connected to an external pipe is connected to an end portion of the heat medium outlet side tank portion in the longitudinal direction. An expanded portion expanding outward is provided at the center portion, in the tank width direction, in the pipe joint connected portion of at least one tank portion.

Description

熱交換器Heat exchanger
　本発明は、熱媒体が導入出されるパイプを接続するためのパイプジョイントが接合された熱交換器に関する。 The present invention relates to a heat exchanger in which a pipe joint for connecting a pipe into which a heat medium is introduced is connected.
　例えば、車両用空調装置のヒータコアに用いられる熱交換器として、冷却水を導入出するための外部配管としてのパイプがタンク部に接続されているものが知られている（例えば、特許文献１）。この熱交換器においては、タンク部の断面における高さよりも大口径のパイプを接続するための連通部材（パイプジョイント）が、タンク部のエンジン冷却水（温水）導出入口に設けられている。
特開２００２－６２０８４号公報 For example, a heat exchanger used in a heater core of a vehicle air conditioner is known in which a pipe as an external pipe for introducing and removing cooling water is connected to a tank unit (for example, Patent Document 1). . In this heat exchanger, a communication member (pipe joint) for connecting a pipe having a larger diameter than the height in the cross section of the tank portion is provided at the engine coolant (warm water) outlet inlet of the tank portion.
JP 2002-62084 A
　近年、車両用空調装置のヒータコアについて、小型化および軽量化（熱交換器自体の軽量化に加え、満水時の熱媒体重量を含めた軽量化）の要請が高まっており、タンク部を小型化することによって、そのような要請に対応しようという試みがなされている。しかしながら、特許文献１に記載されるような構造の熱交換器においてタンク部を小型化しようとすると、外部配管としてのパイプの径は他の機器との関係でほぼ決まっているので、連通部材の上流側および下流側とで口径のギャップが大きくなり過ぎ、連通部材だけで該口径のギャップを吸収することは困難であった。また、特許文献１に記載されるような構造の熱交換器においては、とくに冷却水導入側において、パイプ接続部からタンク部に導入された冷却水の流れにタンク部内におけるタンク部長手方向への直進の指向性があるため、パイプ接続部付近でタンク部へと連通されているチューブに冷却水が流れにくいという問題があった。 In recent years, there has been an increasing demand for smaller and lighter heater cores for vehicle air conditioners (in addition to reducing the weight of heat exchangers in addition to the weight of the heat exchanger itself), and reducing the size of the tank. By doing so, attempts have been made to respond to such requests. However, when trying to reduce the size of the tank part in the heat exchanger having a structure as described in Patent Document 1, the diameter of the pipe as the external pipe is almost determined in relation to other equipment. The gap of the caliber becomes too large between the upstream side and the downstream side, and it is difficult to absorb the gap of the caliber with only the communication member. Further, in the heat exchanger having the structure as described in Patent Document 1, particularly on the cooling water introduction side, the flow of the cooling water introduced from the pipe connection portion to the tank portion is caused to flow in the tank portion longitudinal direction in the tank portion. Due to the directivity of the straight line, there was a problem that the cooling water did not easily flow through the tube connected to the tank part near the pipe connection part.
　そこで本発明の課題は、タンク部の小型化および軽量化、ひいては熱交換器全体の小型化および軽量化の要請に対応しつつ、各熱交換チューブにほぼ均等に熱媒体を流通させることが可能な、熱媒体の流動性に優れた熱交換器を提供することにある。 Accordingly, the object of the present invention is to allow the heat medium to be distributed almost evenly through each heat exchange tube while responding to the demand for downsizing and weight reduction of the tank part, and hence downsizing and weight reduction of the entire heat exchanger. Another object is to provide a heat exchanger excellent in fluidity of the heat medium.
　上記課題を解決するために、本発明に係る熱交換器は、熱媒体の入口側と出口側とにタンク部を備え、両タンク部間を、並行に配列された複数の熱交換チューブで連通させるとともに、熱媒体入口側タンク部の長手方向一端部に外部配管と接続される入口側パイプジョイントを接合し、熱媒体出口側タンク部の長手方向一端部に外部配管と接続される出口側パイプジョイントを接合した熱交換器において、少なくとも一方のタンク部のパイプジョイント接合部に、外方への膨出部を設けたことを特徴とするものからなる。本発明の熱交換器においては、熱媒体の入口側または出口側のうち少なくとも一方のタンク部のパイプジョイント接合部に上記膨出部が設けられているので、上記タンク部を、パイプジョイント接合部とその他の部位とで異なる径に形成することが可能となり、タンク部の設計自由度を高めることができる。そして、パイプジョイント接合部よりもその他の部位において外径が小さくなるようにタンク部を形成することにより、タンク部が小型化される。さらに、パイプジョイント接合部よりもその他の部位の内径が小さくなるようにタンク部を形成することにより、内部に熱媒体が満たされた際のタンク部の重量が軽量化される。 In order to solve the above problems, a heat exchanger according to the present invention includes tank portions on the inlet side and the outlet side of a heat medium, and communicates between the tank portions with a plurality of heat exchange tubes arranged in parallel. In addition, an inlet side pipe joint connected to an external pipe is joined to one end portion in the longitudinal direction of the heat medium inlet side tank portion, and an outlet side pipe connected to the external pipe at one end portion in the longitudinal direction of the heat medium outlet side tank portion. In the heat exchanger in which the joints are joined, an outwardly bulging portion is provided in the pipe joint joining portion of at least one tank portion. In the heat exchanger of the present invention, since the bulging portion is provided at the pipe joint joint portion of at least one tank portion of the heat medium inlet side or outlet side, the tank portion is connected to the pipe joint joint portion. And other portions can be formed in different diameters, and the degree of freedom in designing the tank portion can be increased. And a tank part is reduced in size by forming a tank part so that an outer diameter may become small in a site | part other than a pipe joint junction part. Furthermore, by forming the tank part so that the inner diameter of the other part is smaller than the pipe joint joint part, the weight of the tank part when the heat medium is filled therein is reduced.
　本発明の熱交換器において、前記膨出部は、端面がパイプジョイント横断面の一部を横切るように形成されることが好ましい。このように膨出部を形成することにより、パイプジョイント接合部においてもタンク部の小型、軽量化が図られる。 In the heat exchanger according to the present invention, it is preferable that the bulging portion is formed so that the end surface crosses a part of the cross section of the pipe joint. By forming the bulging portion in this way, the tank portion can be reduced in size and weight even at the pipe joint joint portion.
　また、前記膨出部は、湾曲膨出した形状の端面を有する湾曲膨出部からなるように形成されていることが好ましい。とくに、前記膨出部は、タンク幅方向中央部に設けられることが好ましい。このように膨出部を形成することにより、タンク部のパイプジョイント接合部近傍に配置される熱交換チューブ内の熱媒体の流れと、パイプジョイントに接続されるパイプ内の熱媒体の流れとが、上記膨出部を介して円滑かつ連続的に接続される。とくに、上記膨出部が入口側タンク部に設けられている場合には、入口側パイプから導入された熱媒体に、パイプジョイント接合部近傍の熱交換チューブに向けた流れ指向性が付与されるので、パイプジョイント接合部近傍の熱交換チューブ内の熱媒体の流動性が向上する。さらに、上記膨出部が出口側タンク部にも設けられることにより、パイプジョイント接合部近傍の熱交換チューブから出口側パイプに向けた流れ指向性が付与され、パイプジョイント接合部近傍の熱交換チューブ内の熱媒体の流動性がさらに向上する。 Further, it is preferable that the bulging portion is formed to be a curved bulging portion having an end surface having a curved bulging shape. In particular, it is preferable that the bulging portion is provided at a central portion in the tank width direction. By forming the bulging portion in this manner, the flow of the heat medium in the heat exchange tube disposed in the vicinity of the pipe joint joint portion of the tank portion and the flow of the heat medium in the pipe connected to the pipe joint are reduced. Are connected smoothly and continuously through the bulging portion. In particular, when the bulging portion is provided in the inlet side tank portion, the flow directionality toward the heat exchange tube near the pipe joint joint is imparted to the heat medium introduced from the inlet side pipe. Therefore, the fluidity of the heat medium in the heat exchange tube near the pipe joint joint is improved. Furthermore, since the bulging part is also provided in the outlet side tank part, flow directivity from the heat exchange tube in the vicinity of the pipe joint joint to the outlet side pipe is provided, and the heat exchange tube in the vicinity of the pipe joint joint is provided. The fluidity of the internal heat medium is further improved.
　また、前記膨出部は、略矩形状の端面を有する矩形膨出部からなるように形成することも可能である。すなわち、膨出部の端面は、上述のようなタンク幅方向の一部において突出している形状ではなく、タンク幅方向において一定量均一に膨出した形状に形成可能である。このように膨出部を形成することにより、パイプジョイントの断面をタンク幅方向に拡大し、パイプジョイントの内部流路の断面積を増大させることができる。この場合に、パイプジョイントの内部流路の断面形状を、外部配管接続側のパイプジョイント部分に対しては外部配管のために円形とし、タンク部への接続側部分については、例えば、タンク幅方向の長径を有する楕円または長円に形成することができる。このようにすることで、パイプジョイントに接続されるパイプ（外部配管）の径が比較的大きい場合にも、パイプジョイントのタンク部接続側部分の断面をタンク高さ方向に拡大しなくて済むようになり、その結果、タンク部の高さの増加を抑えることが可能となる。 Further, the bulging portion can be formed to be a rectangular bulging portion having a substantially rectangular end surface. That is, the end face of the bulging portion can be formed in a shape that bulges uniformly in a certain amount in the tank width direction, not in a shape that protrudes in part in the tank width direction as described above. By forming the bulging portion in this manner, the cross section of the pipe joint can be enlarged in the tank width direction, and the cross sectional area of the internal flow path of the pipe joint can be increased. In this case, the cross-sectional shape of the internal flow path of the pipe joint is circular for external piping with respect to the pipe joint portion on the external piping connection side, and for the connection side portion to the tank portion, for example, in the tank width direction An ellipse or an ellipse having a major axis of By doing so, even when the diameter of the pipe (external piping) connected to the pipe joint is relatively large, it is not necessary to enlarge the cross section of the tank joint connection side portion of the pipe joint in the tank height direction. As a result, an increase in the height of the tank portion can be suppressed.
　また、本発明において、前記タンク部は、その長手方向における前記膨出部以外の部位において、実質的に一定の断面形状からなる一定断面部を備えていることが好ましい。とくに、前記膨出部が、テーパ状に形成されて前記一定断面部に接続されることが好ましい。タンク部を、このような一定断面部と膨出部とからなる比較的簡素な構造とすることにより、熱交換器構成部品の加工が容易化可能となる。たとえば、前記膨出部を深絞り加工により形成することも可能である。 In the present invention, it is preferable that the tank portion includes a constant cross-sectional portion having a substantially constant cross-sectional shape in a portion other than the bulging portion in the longitudinal direction. In particular, it is preferable that the bulging portion is formed in a tapered shape and connected to the constant cross section. By making the tank part a relatively simple structure composed of such a constant cross-sectional part and a bulging part, the processing of the heat exchanger component can be facilitated. For example, the bulging portion can be formed by deep drawing.
　本発明は、熱媒体の流れ経路がワンパス構造からなる熱交換器に好適に適用できる。熱媒体の流れ経路がワンパス構造の熱交換器においては、タンク部の内部に仕切りが設けられていないので、各熱交換チューブの流れが十分に均一化されず、片流れが生じやすくなるおそれがあり、とくにパイプジョイント接合部近傍の熱交換チューブの流動性が悪くなりやすい。このようなワンパス構造の熱交換器に本発明を適用することにより、各熱交換チューブの流れが均一化され、熱交換器の性能の向上が図られる。 The present invention can be suitably applied to a heat exchanger in which the flow path of the heat medium has a one-pass structure. In heat exchangers with a one-pass structure for the flow path of the heat medium, there is no partition inside the tank part, so the flow of each heat exchange tube is not sufficiently uniform, and there is a risk that a single flow is likely to occur. In particular, the fluidity of the heat exchange tube in the vicinity of the joint portion of the pipe joint tends to deteriorate. By applying the present invention to such a one-pass heat exchanger, the flow of each heat exchange tube is made uniform, and the performance of the heat exchanger is improved.
　本発明の熱交換器は、とくに小型化および軽量化が求められる車両用空調装置のヒータコアに好適に用いることができる。 The heat exchanger of the present invention can be suitably used for a heater core of a vehicle air conditioner that is particularly required to be reduced in size and weight.
　本発明に係る熱交換器によれば、熱媒体の入口側または出口側のタンク部のパイプジョイント接合部に膨出部が設けられているので、パイプジョイント接合部よりもその他の部位において外径が小さくなるようにタンク部を形成することにより、タンク部の小型化および軽量化が可能となる。また、膨出部を湾曲膨出させることにより、パイプジョイント接合部近傍の熱交換チューブ内における熱媒体の流動性を向上させることが可能となる。さらに、膨出部を矩形形状にて膨出させることにより、パイプ（外部配管）の径が比較的大きい場合にも、パイプジョイントのタンク部接続側部分の断面をタンク高さ方向に拡大しなくて済むようになるので、タンク部まわりの小型化が可能となる。 According to the heat exchanger according to the present invention, since the bulging portion is provided in the pipe joint joint portion of the tank portion on the inlet side or the outlet side of the heat medium, the outer diameter at the other portion than the pipe joint joint portion. By forming the tank portion so as to be small, the tank portion can be reduced in size and weight. Moreover, it becomes possible to improve the fluidity | liquidity of the heat medium in the heat exchange tube of a pipe joint junction vicinity by curving a bulging part. Furthermore, by bulging the bulging part in a rectangular shape, even when the diameter of the pipe (external piping) is relatively large, the section of the pipe joint tank part connection side portion is not enlarged in the tank height direction. Therefore, it is possible to reduce the size around the tank.
本発明の一実施態様に係る熱交換器を示し、（Ａ）はパイプが接続される前の状態の斜視図、（Ｂ）はパイプが接続された状態の斜視図である。The heat exchanger which concerns on one embodiment of this invention is shown, (A) is a perspective view of the state before a pipe is connected, (B) is a perspective view of the state where the pipe was connected. 図１の熱交換器１を示し、（Ａ）は正面図、（Ｂ）は左側面図、（Ｃ）は右側面図である。The heat exchanger 1 of FIG. 1 is shown, (A) is a front view, (B) is a left side view, (C) is a right side view. 図１の熱交換器１の分解状態を示す分解斜視図である。It is a disassembled perspective view which shows the decomposition | disassembly state of the heat exchanger 1 of FIG. 図３の熱交換器１の分解状態を示し、（Ａ）はパイプジョイント近傍の部分拡大斜視図、（Ｂ）はタンク部材７ｂの近傍の部分拡大斜視図、（Ｃ）は（Ａ）および（Ｂ）の中間付近の部分拡大斜視図である。3 shows a disassembled state of the heat exchanger 1 in FIG. 3, (A) is a partially enlarged perspective view in the vicinity of the pipe joint, (B) is a partially enlarged perspective view in the vicinity of the tank member 7 b, and (C) is (A) and ( It is a partial expansion perspective view of the middle vicinity of B). 図３のタンク部材７ｃを示し、（Ａ）は膨出部１２近傍を上から見た部分拡大斜視図、（Ｂ）は膨出部１２近傍を下から見た部分拡大斜視図、（Ｃ）は係合孔１３近傍を上から見た部分拡大斜視図である。3A is a partial enlarged perspective view of the vicinity of the bulging portion 12 as viewed from above, and FIG. 3B is a partial enlarged perspective view of the vicinity of the bulging portion 12 as viewed from below. FIG. 4 is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed from above. 本発明の他の実施態様に係る熱交換器を示し、（Ａ）はパイプが接続される前の状態の斜視図、（Ｂ）はパイプが接続された状態の斜視図である。The heat exchanger which concerns on the other embodiment of this invention is shown, (A) is a perspective view of the state before a pipe is connected, (B) is a perspective view of the state where the pipe was connected. 図６の熱交換器２０を示し、（Ａ）は正面図、（Ｂ）は左側面図、（Ｃ）は右側面図である。The heat exchanger 20 of FIG. 6 is shown, (A) is a front view, (B) is a left side view, and (C) is a right side view. 図６の熱交換器２０の分解状態を示す分解斜視図である。It is a disassembled perspective view which shows the decomposition | disassembly state of the heat exchanger 20 of FIG. 図８の熱交換器２０の分解状態を示し、（Ａ）はパイプジョイント近傍の部分拡大斜視図、（Ｂ）はタンク部材１７ｂの近傍の部分拡大斜視図、（Ｃ）は（Ａ）および（Ｂ）の中間付近の部分拡大斜視図である。8 shows a disassembled state of the heat exchanger 20 in FIG. 8, (A) is a partially enlarged perspective view in the vicinity of the pipe joint, (B) is a partially enlarged perspective view in the vicinity of the tank member 17b, (C) is (A) and ( It is a partial expansion perspective view of the middle vicinity of B). 図８のタンク部材１７ｃを示し、（Ａ）は膨出部２２近傍を上から見た部分拡大斜視図、（Ｂ）は膨出部２２近傍を下から見た部分拡大斜視図、（Ｃ）は係合孔１３近傍を上から見た部分拡大斜視図である。8A is a partial enlarged perspective view of the vicinity of the bulging portion 22 as viewed from above, and FIG. 8B is a partial enlarged perspective view of the vicinity of the bulging portion 22 as viewed from below. FIG. 4 is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed from above.
　以下に、本発明の望ましい実施の形態を、図面を参照して説明する。
　図１は、本発明の一実施態様に係る熱交換器１を示しており、（Ａ）はパイプジョイント２、３にパイプが接続される前の状態の斜視図、（Ｂ）はパイプジョイント２、３に、それぞれパイプ４、５が接続された状態の斜視図である。図１（Ｂ）において、熱媒体の流れは、熱交換器１の入口側パイプジョイント２に接続された入口側パイプ４を通して熱交換器１内に導入され、出口側パイプ５を通して排出されるような流れとなっている。熱媒体は、まず、入口側パイプ４を通して入口側タンク部６に流入する。入口側タンク部６と出口側タンク部７の間には、複数の熱交換チューブ８が並行して配列されており、熱交換チューブ８によってタンク部６、７が互いに連通されている。入口側タンク部６内の熱媒体は、熱交換チューブ８を通して出口側タンク部７へと移送される際に、外部流体との間で熱交換される。出口側タンク部７内の熱媒体は、出口側パイプジョイント３に接続された出口側パイプ５を通して、熱交換器１の外部へ排出される。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a heat exchanger 1 according to an embodiment of the present invention, in which (A) is a perspective view of a state before a pipe is connected to pipe joints 2 and 3, and (B) is a pipe joint 2. 3 is a perspective view of a state in which pipes 4 and 5 are connected to 3 respectively. In FIG. 1B, the flow of the heat medium is introduced into the heat exchanger 1 through the inlet side pipe 4 connected to the inlet side pipe joint 2 of the heat exchanger 1 and discharged through the outlet side pipe 5. It has become a trend. First, the heat medium flows into the inlet side tank unit 6 through the inlet side pipe 4. A plurality of heat exchange tubes 8 are arranged in parallel between the inlet side tank unit 6 and the outlet side tank unit 7, and the tank units 6 and 7 communicate with each other by the heat exchange tube 8. When the heat medium in the inlet side tank unit 6 is transferred to the outlet side tank unit 7 through the heat exchange tube 8, heat is exchanged with the external fluid. The heat medium in the outlet side tank unit 7 is discharged to the outside of the heat exchanger 1 through the outlet side pipe 5 connected to the outlet side pipe joint 3.
　図２は、図１の熱交換器１を示しており、（Ａ）は正面図、（Ｂ）は左側面図、（Ｃ）は右側面図である。図２（Ａ）に示されるように、タンク６、７を相互に連通している複数の熱交換チューブ８がタンク長手方向に配列され、複数の熱交換フィン９と交互に積層されており、積層方向の両端には端板１０が設けられている。タンク部６、７のパイプジョイント２、３接合部には、タンク外方への膨出部１１、１２がテーパ状に形成されており、それぞれパイプジョイント２、３の横断面を一部横切っている。また、図２（Ａ）～（Ｃ）に示されるように、タンク部６、７は、膨出部１１、１２以外の部位においては、実質的に一定の断面形状を有するように形成されている。 FIG. 2 shows the heat exchanger 1 of FIG. 1, wherein (A) is a front view, (B) is a left side view, and (C) is a right side view. As shown in FIG. 2 (A), a plurality of heat exchange tubes 8 communicating with each other of the tanks 6 and 7 are arranged in the tank longitudinal direction and alternately stacked with a plurality of heat exchange fins 9, End plates 10 are provided at both ends in the stacking direction. In the pipe joints 2 and 3 of the tank parts 6 and 7, bulging parts 11 and 12 to the outside of the tank are formed in a tapered shape, and partially cross the cross section of the pipe joints 2 and 3 respectively. Yes. 2A to 2C, the tank portions 6 and 7 are formed so as to have a substantially constant cross-sectional shape at portions other than the bulging portions 11 and 12. Yes.
　図３は、図１の熱交換器１を分解した状態を示す分解斜視図である。図３において、タンク部材６ａ、７ａのタンク長手方向の一端にはパイプジョイント２、３がそれぞれ接合され、他端にはそれぞれタンク部材６ｂ、７ｂが接合される。タンク部材６ｃ、７ｃには、それぞれ膨出部１１、１２が形成されている。膨出部１１、１２は、それぞれタンク部６、７の断面積を拡大する方向に湾曲して膨出しており、それぞれパイプジョイント２、３の外側面に嵌合される。このように、タンク部材６ａ、６ｂ、６ｃおよびパイプジョイント２によりタンク部６の内壁が形成されている。なお、図３には、全ての熱交換チューブ８における熱媒体の流れ方向が同一方向であるワンパス構造からなる熱交換器の例が記載されているが、タンク部材６ａ、６ｃ間の所定の位置に仕切りを設けてタンク部６を複数室に区画することによって、熱交換チューブ８における熱媒体の流れ方向が一律でないワンパス構造以外の構造からなる熱交換器を形成することも可能である。また、出口側についても入口側と同様に、タンク部材７ａ、７ｂ、７ｃおよびパイプジョイント３によって、タンク部７の内壁が形成されている。 FIG. 3 is an exploded perspective view showing a state in which the heat exchanger 1 of FIG. 1 is disassembled. In FIG. 3, the pipe joints 2 and 3 are joined to one end of the tank members 6a and 7a in the tank longitudinal direction, and the tank members 6b and 7b are joined to the other ends, respectively. The tank members 6c and 7c are formed with bulging portions 11 and 12, respectively. The bulging portions 11 and 12 are curved and bulged in a direction in which the cross-sectional areas of the tank portions 6 and 7 are enlarged, and are fitted to the outer surfaces of the pipe joints 2 and 3, respectively. Thus, the tank member 6a, 6b, 6c and the pipe joint 2 form the inner wall of the tank portion 6. FIG. 3 shows an example of a heat exchanger having a one-pass structure in which the flow direction of the heat medium in all the heat exchange tubes 8 is the same direction, but a predetermined position between the tank members 6a and 6c. It is also possible to form a heat exchanger having a structure other than the one-pass structure in which the flow direction of the heat medium in the heat exchange tube 8 is not uniform by partitioning the tank unit 6 into a plurality of chambers. Further, the inner wall of the tank portion 7 is formed by the tank members 7 a, 7 b, 7 c and the pipe joint 3 on the outlet side as well as the inlet side.
　図４は、図３に示された熱交換器１の分解状態を部分的に拡大して示しており、（Ａ）はパイプジョイント３近傍の部分拡大斜視図、（Ｂ）はタンク部材７ｂ近傍の部分拡大斜視図、（Ｃ）は（Ａ）と（Ｂ）の中間付近の部分拡大斜視図である。図４（Ａ）において、タンク部材７ｃのタンク長手方向一端に形成された膨出部１２は、タンク部７の断面積を拡大する方向に膨出した湾曲形状に形成されている。このような膨出部１２が形成されることにより、膨出部１２とパイプジョイント３との接合部を確保しつつ、タンク部７を小型化することが可能となる。さらに、膨出部１２が湾曲膨出した形状に形成されることにより、熱交換チューブ８内の熱媒体流れに対して、パイプジョイント３に接続されるパイプ５に向けた指向性が付与されて、熱媒体の流動性の向上が図られている。 4 is a partially enlarged view of the disassembled state of the heat exchanger 1 shown in FIG. 3, (A) is a partially enlarged perspective view in the vicinity of the pipe joint 3, and (B) is in the vicinity of the tank member 7b. (C) is the partial expansion perspective view of the intermediate vicinity of (A) and (B). 4A, the bulging portion 12 formed at one end in the tank longitudinal direction of the tank member 7c is formed in a curved shape that bulges in the direction in which the cross-sectional area of the tank portion 7 is enlarged. By forming such a bulging portion 12, it is possible to reduce the size of the tank portion 7 while securing a joint portion between the bulging portion 12 and the pipe joint 3. Furthermore, by forming the bulging portion 12 into a curved bulging shape, directivity toward the pipe 5 connected to the pipe joint 3 is given to the heat medium flow in the heat exchange tube 8. In addition, the fluidity of the heat medium is improved.
　図４（Ｂ）において、タンク部材７ｂには、タンク部材７ｃ上の係合孔１３に係合可能な係合突起１４が設けられており、係合突起１４が係合孔１３に係合された状態でろう付けされることにより、タンク部７の反パイプジョイント接合部側の内壁が形成されるようになっている。また、図４（Ｃ）において、タンク部材６ｃ、７ｃには、平板を折り曲げ加工して形成された扁平形の熱交換チューブ８がろう付けにより接続されている。このようにして、タンク部６、７が熱交換チューブ８と連通されている。 4B, the tank member 7b is provided with an engagement protrusion 14 that can be engaged with the engagement hole 13 on the tank member 7c, and the engagement protrusion 14 is engaged with the engagement hole 13. The inner wall of the tank portion 7 on the side opposite to the pipe joint joint is formed by brazing in the state where the tank portion 7 is brazed. Further, in FIG. 4C, a flat heat exchange tube 8 formed by bending a flat plate is connected to the tank members 6c and 7c by brazing. In this way, the tank portions 6 and 7 are communicated with the heat exchange tube 8.
　図５は、図３のタンク部材７ｃを部分的に拡大して示しており、（Ａ）は膨出部１２近傍を斜め上方から見た部分拡大斜視図、（Ｂ）は膨出部１２近傍を斜め下方から見た部分拡大斜視図、（Ｃ）は係合孔１３近傍を斜め上方から見た部分拡大斜視図である。図５（Ａ）および図５（Ｂ）に示されるように、膨出部１２は、出口側タンク部７を形成するタンク部材７ｃのタンク幅方向中央部において、湾曲して膨出した形状に形成されている。このような膨出部１２は、例えば深絞り加工により形成することが可能である。また、入口側タンク部６を形成するタンク部材６ｃについても、タンク部材７ｃと同様にして形成可能である。 5 is a partially enlarged view of the tank member 7c of FIG. 3, in which (A) is a partially enlarged perspective view of the vicinity of the bulging portion 12 as viewed obliquely from above, and (B) is the vicinity of the bulging portion 12. Is a partially enlarged perspective view of the engagement hole 13 viewed from obliquely below, and (C) is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed obliquely from above. As shown in FIGS. 5 (A) and 5 (B), the bulging portion 12 has a curved and bulging shape at the center in the tank width direction of the tank member 7c forming the outlet side tank portion 7. Is formed. Such a bulging portion 12 can be formed by, for example, deep drawing. Also, the tank member 6c forming the inlet side tank portion 6 can be formed in the same manner as the tank member 7c.
　図６は、本発明の他の実施態様に係る熱交換器２０を示しており、（Ａ）はパイプジョイント２、３にパイプが接続される前の状態の斜視図、（Ｂ）はパイプジョイント２、３に、それぞれパイプ４、５が接続された状態の斜視図である。図６（Ｂ）において、熱媒体の流れは、熱交換器２０の入口側パイプジョイント２に接続された入口側パイプ４を通して熱交換器２０内に導入され、出口側パイプ５を通して排出されるような流れとなっている。熱媒体は、まず、入口側パイプ４を通して入口側タンク部１６に流入する。入口側タンク部１６と出口側タンク部１７の間には、複数の熱交換チューブ８が並行して配列されており、熱交換チューブ８によってタンク部１６、１７が互いに連通されている。入口側タンク部１６内の熱媒体は、熱交換チューブ８を通して出口側タンク部１７へと移送される際に、外部流体との間で熱交換される。出口側タンク部１７内の熱媒体は、出口側パイプジョイント３に接続された出口側パイプ５を通して、熱交換器２０の外部へ排出される。
6A and 6B show a heat exchanger 20 according to another embodiment of the present invention, in which FIG. 6A is a perspective view before a pipe is connected to the pipe joints 2 and 3, and FIG. 6B is a pipe joint. It is a perspective view of the state where pipes 4 and 5 are connected to 2 and 3, respectively. In FIG. 6B, the flow of the heat medium is introduced into the heat exchanger 20 through the inlet side pipe 4 connected to the inlet side pipe joint 2 of the heat exchanger 20 and discharged through the outlet side pipe 5. It has become a trend. First, the heat medium flows into the inlet side tank portion 16 through the inlet side pipe 4. A plurality of heat exchange tubes 8 are arranged in parallel between the inlet side tank unit 16 and the outlet side tank unit 17, and the tank units 16 and 17 are communicated with each other by the heat exchange tube 8. When the heat medium in the inlet side tank unit 16 is transferred to the outlet side tank unit 17 through the heat exchange tube 8, heat is exchanged with the external fluid. The heat medium in the outlet side tank unit 17 is discharged to the outside of the heat exchanger 20 through the outlet side pipe 5 connected to the outlet side pipe joint 3.
　図７は、図６の熱交換器２０を示しており、（Ａ）は正面図、（Ｂ）は左側面図、（Ｃ）は右側面図である。図７（Ａ）に示されるように、タンク１６、１７を相互に連通している複数の熱交換チューブ８がタンク長手方向に配列され、複数の熱交換フィン９と交互に積層されており、積層方向の両端には端板１０が設けられている。タンク部１６、１７のパイプジョイント２、３接合部には、タンク外方への膨出部２１、２２がテーパ状に形成されており、それぞれパイプジョイント２、３の横断面を一部横切っている。また、図２（Ａ）～（Ｃ）に示されるように、タンク部１６、１７は、膨出部２１、２２以外の部位においては、実質的に一定の断面形状を有するように形成されている。なお、図６および図７におけるタンク部１６、１７は、タンク方向中央部に設けられ、湾曲膨出した形状の端面を有する湾曲膨出部１１、１２を有する図１および図２のタンク部６、７と異なり、パイプジョイント接合部においてタンク幅方向において均一に膨出した、略矩形状の端面を有する矩形膨出部２１、２２を有している。その他の点において、図６～１０は図１～５と同様であるので、以下、説明が共通する部分については共通の部品番号を付することにより説明を省略する。 FIG. 7 shows the heat exchanger 20 of FIG. 6, wherein (A) is a front view, (B) is a left side view, and (C) is a right side view. As shown in FIG. 7A, a plurality of heat exchange tubes 8 communicating with each other of the tanks 16 and 17 are arranged in the tank longitudinal direction, and are stacked alternately with the plurality of heat exchange fins 9, End plates 10 are provided at both ends in the stacking direction. The pipe joints 2 and 3 joints of the tank parts 16 and 17 are formed with tapered portions 21 and 22 outwardly from the tank, and partially cross the cross sections of the pipe joints 2 and 3 respectively. Yes. 2A to 2C, the tank portions 16 and 17 are formed so as to have a substantially constant cross-sectional shape at portions other than the bulging portions 21 and 22. Yes. 6 and 7 are provided in the center in the tank direction, and have the curved bulging portions 11 and 12 having end surfaces with curved bulging shapes. , 7, there are rectangular bulging portions 21, 22 having a substantially rectangular end surface bulging uniformly in the tank width direction at the pipe joint joint portion. In other respects, FIGS. 6 to 10 are the same as FIGS. 1 to 5, and therefore, the parts having the same description will be denoted by the same component numbers and the description thereof will be omitted.
　図８は、図６の熱交換器２０を分解した状態を示す分解斜視図である。図８において、タンク部材１６ａ、１７ａのタンク長手方向の一端にはパイプジョイント２、３がそれぞれ接合され、他端にはそれぞれタンク部材１６ｂ、１７ｂが接合される。タンク部材１６ｃ、１７ｃには、それぞれ膨出部２１、２２が形成されている。膨出部２１、２２は、それぞれタンク部１６、１７の断面積を拡大する方向に膨出しており、それぞれパイプジョイント２、３の外側面に嵌合される。このように、タンク部材１６ａ、１６ｂ、１６ｃおよびパイプジョイント２によりタンク部１６の内壁が形成されている。なお、図８には、全ての熱交換チューブ８における熱媒体の流れ方向が同一方向であるワンパス構造からなる熱交換器の例が記載されている。また、出口側についても入口側と同様に、タンク部材１７ａ、１７ｂ、１７ｃおよびパイプジョイント３によって、タンク部１７の内壁が形成されている。 FIG. 8 is an exploded perspective view showing a state in which the heat exchanger 20 of FIG. 6 is disassembled. In FIG. 8, pipe joints 2 and 3 are joined to one end of the tank members 16 a and 17 a in the tank longitudinal direction, and tank members 16 b and 17 b are joined to the other ends, respectively. The tank members 16c and 17c are formed with bulging portions 21 and 22, respectively. The bulging portions 21 and 22 bulge in directions in which the cross-sectional areas of the tank portions 16 and 17 are enlarged, and are fitted to the outer surfaces of the pipe joints 2 and 3, respectively. Thus, the tank member 16a, 16b, 16c and the pipe joint 2 form the inner wall of the tank portion 16. FIG. 8 shows an example of a heat exchanger having a one-pass structure in which the heat medium flows in all the heat exchange tubes 8 in the same direction. On the outlet side, the inner wall of the tank portion 17 is formed by the tank members 17a, 17b, 17c and the pipe joint 3 in the same manner as the inlet side.
　図９は、図８に示された熱交換器２０の分解状態を部分的に拡大して示しており、（Ａ）はパイプジョイント３近傍の部分拡大斜視図、（Ｂ）はタンク部材１７ｂ近傍の部分拡大斜視図、（Ｃ）は（Ａ）と（Ｂ）の中間付近の部分拡大斜視図である。図４（Ａ）において、タンク部材１７ｃのタンク長手方向一端に形成された膨出部２２は、タンク部１７の断面積を拡大する方向に膨出した形状に形成されている。このような膨出部２２が形成されることにより、膨出部２２とパイプジョイント３との接合部を確保しつつ、タンク部１７を小型化することが可能となる。さらに、膨出部２２がタンク幅方向において一定量だけ均一に膨出した、略矩形状の端面を有する形状に形成されることにより、パイプジョイントに接続されるパイプの径が比較的大きい場合にも、パイプジョイント３においてタンク部１７が接続される側の部分の断面をタンク高さ方向に拡大しなくて済むようになり、その結果として、タンク部１７の高さの増加を抑えることが可能となる。 9 is a partially enlarged view of the disassembled state of the heat exchanger 20 shown in FIG. 8, (A) is a partially enlarged perspective view in the vicinity of the pipe joint 3, and (B) is in the vicinity of the tank member 17b. (C) is the partial expansion perspective view of the intermediate vicinity of (A) and (B). In FIG. 4A, the bulging portion 22 formed at one end in the tank longitudinal direction of the tank member 17c is formed in a shape bulging in a direction in which the cross-sectional area of the tank portion 17 is enlarged. By forming such a bulging portion 22, it is possible to reduce the size of the tank portion 17 while securing a joint portion between the bulging portion 22 and the pipe joint 3. Furthermore, when the diameter of the pipe connected to the pipe joint is relatively large by forming the bulging portion 22 into a shape having a substantially rectangular end surface that is uniformly bulged by a certain amount in the tank width direction. However, the section of the pipe joint 3 to which the tank portion 17 is connected need not be enlarged in the tank height direction, and as a result, an increase in the height of the tank portion 17 can be suppressed. It becomes.
　図９（Ｂ）において、タンク部材１７ｂには、タンク部材１７ｃ上の係合孔１３に係合可能な係合突起１４が設けられており、係合突起１４が係合孔１３に係合された状態でろう付けされることにより、タンク部１７の反パイプジョイント接合部側の内壁が形成されるようになっている。また、図９（Ｃ）において、タンク部材１６ｃ、１７ｃには、平板を折り曲げ加工して形成された扁平形の熱交換チューブ８がろう付けにより接続されている。このようにして、タンク部１６、１７が熱交換チューブ８と連通されている。 9B, the tank member 17b is provided with an engagement protrusion 14 that can be engaged with the engagement hole 13 on the tank member 17c, and the engagement protrusion 14 is engaged with the engagement hole 13. The inner wall of the tank portion 17 on the side opposite to the pipe joint joint portion is formed by brazing in the state where the tank portion 17 is brazed. In FIG. 9C, a flat heat exchange tube 8 formed by bending a flat plate is connected to the tank members 16c and 17c by brazing. In this way, the tank portions 16 and 17 are communicated with the heat exchange tube 8.
　図１０は、図８のタンク部材１７ｃを部分的に拡大して示しており、（Ａ）は膨出部２２近傍を斜め上方から見た部分拡大斜視図、（Ｂ）は膨出部２２近傍を斜め下方から見た部分拡大斜視図、（Ｃ）は係合孔１３近傍を斜め上方から見た部分拡大斜視図である。図１０（Ａ）および図１０（Ｂ）に示されるように、膨出部２２は、出口側タンク部１７を形成するタンク部材１７ｃのタンク幅方向に一定量だけ均一に膨出した形状に形成されている。このような膨出部２２は、例えば深絞り加工により形成することが可能である。また、入口側タンク部１６を形成するタンク部材１６ｃについても、タンク部材１７ｃと同様にして形成可能である。 FIG. 10 is a partially enlarged view of the tank member 17c of FIG. 8, in which (A) is a partially enlarged perspective view of the vicinity of the bulging portion 22 as viewed obliquely from above, and (B) is the vicinity of the bulging portion 22. Is a partially enlarged perspective view of the engagement hole 13 viewed from obliquely below, and (C) is a partially enlarged perspective view of the vicinity of the engagement hole 13 as viewed obliquely from above. As shown in FIGS. 10 (A) and 10 (B), the bulging portion 22 is formed in a shape that uniformly bulges by a certain amount in the tank width direction of the tank member 17c forming the outlet side tank portion 17. Has been. Such a bulging portion 22 can be formed by, for example, deep drawing. Also, the tank member 16c forming the inlet side tank portion 16 can be formed in the same manner as the tank member 17c.
　本発明に係る熱交換器は、狭いスペースに搭載されることが多く、また、搭載物の重量が燃費にも影響することから、とくに小型化および軽量化の要請の大きい、車両用空調装置のヒータコアに用いられる熱交換器として好適に用いられる。 The heat exchanger according to the present invention is often mounted in a narrow space, and the weight of the load affects fuel consumption. Therefore, there is a great demand for downsizing and weight reduction of the vehicle air conditioner. It is suitably used as a heat exchanger used for the heater core.
１、２０　熱交換器
２、３　パイプジョイント
４、５　パイプ
６、７、１６、１７　タンク部
６ａ、６ｂ、６ｃ、７ａ、７ｂ、７ｃ、１６ａ、１６ｂ、１６ｃ、１７ａ、１７ｂ、１７ｃ　タンク部材
８　熱交換チューブ
９　熱交換フィン
１０　端板
１１、１２、２１、２２　膨出部
１３　係合孔
１４　係合突起 1, 20 Heat exchanger 2, 3 Pipe joint 4, 5 Pipe 6, 7, 16, 17 Tank 6a, 6b, 6c, 7a, 7b, 7c, 16a, 16b, 16c, 17a, 17b, 17c Tank member 8 Heat exchange tube 9 Heat exchange fin 10 End plates 11, 12, 21, 22 Swelling portion 13 Engagement hole 14 Engagement protrusion

Claims (12)

  1. 　熱媒体の入口側と出口側とにタンク部を備え、両タンク部間を、並行に配列された複数の熱交換チューブで連通させるとともに、熱媒体入口側タンク部の長手方向一端部に外部配管と接続される入口側パイプジョイントを接合し、熱媒体出口側タンク部の長手方向一端部に外部配管と接続される出口側パイプジョイントを接合した熱交換器において、少なくとも一方のタンク部のパイプジョイント接合部に、外方への膨出部を設けたことを特徴とする熱交換器。 Tank parts are provided on the inlet side and outlet side of the heat medium, and both tank parts are communicated with each other by a plurality of heat exchange tubes arranged in parallel, and external piping is provided at one end in the longitudinal direction of the heat medium inlet side tank part. In a heat exchanger in which an inlet side pipe joint connected to the outer pipe is joined to one end in the longitudinal direction of the heat medium outlet side tank part, a pipe joint of at least one tank part is joined A heat exchanger characterized in that an outwardly bulging portion is provided at a joint portion.
  2. 　前記膨出部の端面が、パイプジョイント横断面の一部を横切る、請求項１に記載の熱交換器。 The heat exchanger according to claim 1, wherein an end surface of the bulging portion crosses a part of a pipe joint cross section.
  3. 　前記膨出部が、湾曲膨出した形状の端面を有する湾曲膨出部からなる、請求項１または２に記載の熱交換器。 The heat exchanger according to claim 1 or 2, wherein the bulging portion includes a curved bulging portion having an end surface having a curved bulging shape.
  4. 　前記膨出部が、タンク幅方向中央部に設けられている、請求項１～３のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 3, wherein the bulging portion is provided at a central portion in the tank width direction.
  5. 　前記膨出部が、略矩形状の端面を有する矩形膨出部からなる、請求項１または２に記載の熱交換器。 The heat exchanger according to claim 1 or 2, wherein the bulging portion is a rectangular bulging portion having a substantially rectangular end surface.
  6. 　前記膨出部が、入口側タンク部に設けられている、請求項１～５のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 5, wherein the bulging part is provided in an inlet side tank part.
  7. 　前記膨出部が、出口側タンク部にも設けられている、請求項６に記載の熱交換器。 The heat exchanger according to claim 6, wherein the bulging part is also provided in an outlet side tank part.
  8. 　前記タンク部は、その長手方向における前記膨出部以外の部位において、実質的に一定の断面形状からなる一定断面部を備えている、請求項１～７のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 7, wherein the tank portion includes a constant cross-sectional portion having a substantially constant cross-sectional shape at a portion other than the bulging portion in the longitudinal direction.
  9. 　前記膨出部が、テーパ状に形成されて、前記一定断面部に接続されている、請求項８に記載の熱交換器。 The heat exchanger according to claim 8, wherein the bulging portion is formed in a tapered shape and connected to the constant cross-sectional portion.
  10. 　前記膨出部が深絞り加工されている、請求項１～９のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 9, wherein the bulging portion is deep drawn.
  11. 　熱媒体の流れ経路がワンパス構造からなる、請求項１～１０のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 10, wherein a flow path of the heat medium has a one-pass structure.
  12. 　車両用空調装置のヒータコアに用いられる、請求項１～１１のいずれかに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 11, which is used for a heater core of a vehicle air conditioner.
PCT/JP2010/001069 2010-02-19 2010-02-19 Heat exchanger WO2011101910A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016175193A1 (en) * 2015-04-28 2016-11-03 株式会社デンソー Heat exchanger

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH0842989A (en) * 1994-07-28 1996-02-16 Nippondenso Co Ltd Heat exchanger
JP2001174187A (en) * 1999-12-17 2001-06-29 Denso Corp Structure of filler neck of heat exchanger
FR2856786A1 (en) * 2003-06-26 2004-12-31 Valeo Climatisation Heat exchanger e.g. cooling radiator, connection for motor vehicle, has inlet section connecting to distribution section converging in one plane and diverging in another plane, where planes are perpendicular to distribution section plane
WO2005090892A1 (en) * 2004-02-17 2005-09-29 Valeo Systemes Thermiques Collector box provided with a connection tubing for a soldered heat exchanger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001248995A (en) * 2000-03-03 2001-09-14 Zexel Valeo Climate Control Corp Heat exchanger
CN1879003B (en) * 2003-11-14 2010-12-22 昭和电工株式会社 Evaporator and process for fabricating same
JP4760693B2 (en) * 2006-12-07 2011-08-31 株式会社デンソー Heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0842989A (en) * 1994-07-28 1996-02-16 Nippondenso Co Ltd Heat exchanger
JP2001174187A (en) * 1999-12-17 2001-06-29 Denso Corp Structure of filler neck of heat exchanger
FR2856786A1 (en) * 2003-06-26 2004-12-31 Valeo Climatisation Heat exchanger e.g. cooling radiator, connection for motor vehicle, has inlet section connecting to distribution section converging in one plane and diverging in another plane, where planes are perpendicular to distribution section plane
WO2005090892A1 (en) * 2004-02-17 2005-09-29 Valeo Systemes Thermiques Collector box provided with a connection tubing for a soldered heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016175193A1 (en) * 2015-04-28 2016-11-03 株式会社デンソー Heat exchanger

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