WO2002001136A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
WO2002001136A1
WO2002001136A1 PCT/JP2001/005408 JP0105408W WO0201136A1 WO 2002001136 A1 WO2002001136 A1 WO 2002001136A1 JP 0105408 W JP0105408 W JP 0105408W WO 0201136 A1 WO0201136 A1 WO 0201136A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
medium
pipe
heat exchanger
joint
Prior art date
Application number
PCT/JP2001/005408
Other languages
English (en)
Japanese (ja)
Inventor
Akihiko Takano
Shunichi Furuya
Original Assignee
Zexel Valeo Climate Control Corporation
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 Zexel Valeo Climate Control Corporation filed Critical Zexel Valeo Climate Control Corporation
Publication of WO2002001136A1 publication Critical patent/WO2002001136A1/fr

Links

Classifications

    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/07—Exceeding a certain pressure value in a refrigeration component or cycle

Definitions

  • the present invention relates to a heat exchanger including a tank provided with a joint part for flowing in or out of a medium, and a tube connected to the tank, and performing heat exchange of the medium by heat transmitted to the tube.
  • a heat exchanger in which a plurality of flat tubes are connected to a tubular tank and heat exchange of a medium is performed by heat transmitted to the tube.
  • This type of heat exchanger is used, for example, as a radiator for automobiles and as a radiator for refrigeration cycles.
  • a pair of joints for connecting the external pipes, and the medium flows in from one joint and flows through the tube while exchanging heat.
  • the tank is composed of a tubular member with both ends closed.
  • the joint has a pipe inserted and brazed into the tank.
  • the configuration of such a joint portion is also disclosed, for example, in Japanese Patent Application Laid-Open No. 6-229696.
  • C_ ⁇ 2 and which are use is used as medium (i.e. coolant), the pressure inside the radiator, the operating conditions such as air temperature, the structure exceed the critical point of the medium Has become. In particular, if the pressure rises above the critical point of the medium inside the radiator, the medium will not condense.
  • the refrigeration cycle using C_ ⁇ 2 as medium for example, JP-A-1 1-9 4 3 8 0 No., are also described in JP-A-1 1 2 2 6 6 8 No. 5 or the like.
  • a radiator whose internal pressure exceeds the critical point of the medium in this way requires extremely high pressure resistance.
  • the joint has a problem that the diameter of the pipe is relatively large with respect to the diameter of the tank, which makes it difficult to insert and braze the pipe into the tank.
  • the present invention has been made in view of such a problem, and an object of the present invention is to provide a heat exchanger in which a joint is efficiently provided in a tank.
  • the invention described in claim 1 of the present application includes a tank provided with a joint part for inflowing or outflowing a medium, and a tube connected to the tank, wherein the heat exchange of the medium is performed by heat transmitted to the tube.
  • the tank includes a tubular member having both ends closed
  • the joint portion includes a tubular pipe portion inserted and brazed into the tank
  • an outer diameter of the pipe portion is:
  • a heat exchanger having a configuration that is larger than the inner diameter of the tank and the tip of the pipe portion is formed narrower than other parts of the pipe and protrudes into the tank. According to, the tank is efficiently provided with joints.
  • the brazing material since the brazing material accumulates in the form of a fillet between the tip of the pipe portion and the inner surface of the tank, the strength and airtightness of the brazing portion are surely improved.
  • the invention described in claim 2 of the present application is the heat exchanger according to claim 1, wherein the orthographic projection of the tip of the pipe portion in the longitudinal direction of the tank is curved. Thus, the flow resistance of the medium is reduced.
  • the invention described in claim 3 of the present application is the invention according to claim 1 or 2, wherein the heat exchanger is a radiator of a refrigeration cycle, and the internal pressure is higher than a critical point of the medium. It is a vessel. The radiator cools the medium.
  • the critical point is the limit on the high-temperature side where the gas layer and the liquid layer coexist (that is, the limit on the high-pressure side), and is the end point of one of the vapor pressure curves.
  • the pressure, temperature, and density at the critical point are the critical pressure, critical temperature, and critical density, respectively. If the pressure exceeds the critical point of the medium inside the radiator, the medium will not condense.
  • this heat exchanger is one in which the outer diameter of the pipe part is larger than the inner diameter of the tank, and the joint part is efficiently provided. used.
  • FIG. 1 is a front view showing a heat exchanger according to a specific example of the present invention.
  • FIG. 2 is a perspective view showing a main part of a tank according to a specific example of the present invention.
  • FIG. 3 is a cross-sectional view illustrating a main part of a tank according to a specific example of the present invention.
  • FIG. 4 is a cross-sectional view illustrating a main part of a tank according to a specific example of the present invention.
  • FIG. 5 is a cross-sectional view showing a main part of a tank according to a specific example of the present invention.
  • FIG. 6 is a cross-sectional view showing a main part of a tank and external piping according to a specific example of the present invention.
  • the heat exchanger 1 of the present example shown in FIG. 1 is a radiator used for a refrigeration cycle for cooling the interior of an automobile.
  • the medium employs a C_ ⁇ 2, heat exchangers 1 internal pressure according to the conditions such as air temperature, the heat exchanger 1 Mawa above the critical point of the medium, the tube 3 0 0 and the fins 4 And alternately in parallel with each other, and each tube 300 is connected to a pair of tanks 200.
  • a layer consisting of the tube 300 and the fins 400 is provided with a side plate 500 as a reinforcing member.
  • one tank 200 is provided with a joint portion 210 through which the medium flows from the compressor of the refrigeration cycle, and the other tank 200 is provided with the medium to the decompressor of the refrigeration cycle.
  • An outflow joint 210 is provided.
  • the medium flows into the inside from the joint portion 210 of the one tank 200 and flows through the tube 300 while performing heat exchange by heat transmitted to the tube 300 and the fins 400, and then the other medium. Flows out from the joint part 210 of the tank 200.
  • the white arrows in FIG. 1 indicate the flow direction of the medium.
  • Each tank 200 is formed of a tubular extruded member having both ends closed by caps, and each tube 300 is a flat one having a plurality of small flow paths.
  • Each tube 300 is connected by inserting one end into one tank 200 and the other end into the other tank 200.
  • Each tank 200 is provided with holes for inserting the ends of the tubes 300 at a predetermined pitch in the longitudinal direction.
  • each joint part 210 is formed by inserting a pipe part 211 into a key part of the tank 200.
  • a hole having a predetermined shape for inserting the pipe portion 211 is provided.
  • the joint portion 210 for inflow of the medium is approximately
  • the medium 210 for discharging the medium is provided near the lower end of the other tank 200.
  • the pipe portion 211 is a tubular portion for introducing a medium flow path into the inside of the tank 200, and in this example, is constituted by a drawn pipe.
  • External piping connects the heat exchanger 1 and the compressor, or the heat exchanger 1 and the pressure reducer.
  • the tank 200, the joint part 210, the tube 300, the fins 400, and the side plate 500 are assembled with the members constituting them, and the assembled body is heated in a furnace. And brazed to form a single piece.
  • the brazing material is provided by cladding each member in advance.
  • a wax may be placed at an appropriate location.
  • FIG 1 and 2 are a perspective view and a cross-sectional view, respectively, showing essential parts of the tank 200.
  • the joint part 21 ° of the present example has an outer diameter of a pipe 211 part.
  • L A is larger than inner diameter L B of tank 200.
  • the pipe portion 211 has a taper whose wall thickness decreases toward its tip 211a, and the tip 211a of the pipe portion 211 is It is thinner than other parts of 200.
  • the inner diameter of the pipe portion 211 is constant in the longitudinal direction. Further, the tip 211a of the pipe section 211 protrudes into the tank 200.
  • the positioning of the pipe portion 211 when it is inserted into the tank 200 is performed by pressing the taper against the hole of the tank 200.
  • the brazing material R accumulates in a fillet shape between the tip 211a of the pipe portion 211 and the inner surface of the tank 200.
  • the tank is formed of a tubular member having both ends closed, the joint portion includes the tubular pipe portion inserted and brazed into the tank, and the outside of the pipe portion.
  • the diameter is larger than the inner diameter of the tank, and the tip of the pipe is formed narrower than other parts of the pipe and protrudes into the evening chunk. Efficient installation Can be.
  • the brazing material since the brazing material accumulates in the form of a fillet between the tip of the pipe portion and the inner surface of the tank, the strength and airtightness of the brazing portion can be surely improved.
  • the heat exchanger is a radiator of a refrigeration cycle, and the internal pressure is above the critical point of the medium.
  • this heat exchanger is an efficient installation of a joint where the outer diameter of the pipe is larger than the inner diameter of the tank, and is suitable for use as a radiator whose internal pressure exceeds the critical point of the medium. can do.
  • the tip 2 11 a of the pipe portion 211 is formed slender by a taper, but in this example, it is formed slender by a steep step. Since other basic configurations are the same as those of the above-described specific example, common members are denoted by the same reference numerals, and description thereof is omitted.
  • the end 21a of the pipe portion 211 may be formed slenderly by such a step.
  • the orthographic projection of the tip 211a of the pipe portion 211 in the longitudinal direction of the tank 200 has a curved shape. Since other basic configurations are the same as those of the above-described specific example, common members are denoted by the same reference numerals, and description thereof is omitted.
  • the flow resistance of the medium can be reduced. That is, if the tip of the pipe protrudes into the tank, this may increase the flow resistance of the medium, but in this example, the medium flows from the pipe to the inside of the tank or inside the tank. Such a problem can be avoided because the gas flows smoothly from the pipe to the pipe section.
  • the joint part 210 of the present example is a block body formed by cutting a forged member and mounted on the outer peripheral surface of the tank 200. Since other basic configurations are the same as those of the above-described specific example, common members are denoted by the same reference numerals, and description thereof is omitted.
  • a block 610 corresponding to the joint section 210 is provided in the external piping 600, and the joint section 210 and the block 610 are formed by using a plurality of screw bodies 620. Screwed.
  • the joint section 210 and the block 6110 are provided with a through hole 6111 through which the screw body 620 passes, and a screw hole 213 with which the screw body 620 is screwed.
  • a 0 ring 6 30 for ensuring the airtightness of the medium is interposed between the opening 2 12 of the joint 2 10 and the external pipe 600.
  • the joint 210 may be a block mounted on the outer peripheral surface of the tank. According to such a configuration, the supporting strength of the joint portion 210 can be further improved, and the structure of the joint portion 210 can be simplified. Industrial applicability
  • the present invention efficiently provides a joint having an outer diameter of a pipe portion larger than an inner diameter of a tank, and is mounted on an automobile, for example, as a radiator whose internal pressure exceeds a critical point of a medium. It is suitable for condensers, evaporator, lager, and heat cores.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

L'invention concerne une échangeur de chaleur (1) réalisant l'échange de la chaleur d'un milieu en conduisant la chaleur à travers un tube (300). Cet échangeur de chaleur comprend un réservoir (200) possédant une partie de couplage (210) permettant de faire couler le milieu vers l'intérieur et vers l'extérieur, le tube (300) étant relié au réservoir. Ce réservoir comprend également un élément tubulaire fermé à ses deux extrémités et ladite partie de couplage comprend également une partie de tuyau tubulaire (211) insérée dans le réservoir et brasée. Selon cette invention, le diamètre extérieur de la partie de tuyau est supérieur au diamètre intérieur du réservoir, l'extrémité (211a) de la partie de tuyau est plus fine que les autres parties du tuyau et en saillie à l'intérieur du réservoir, et à l'extrémité de la partie de tuyau, la projection orthogonale par rapport à la direction longitudinale du réservoir est inclinée. En outre, cet échangeur de chaleur constitue le radiateur d'un cycle de réfrigération, et sa pression intérieure dépasse le point critique du milieu.
PCT/JP2001/005408 2000-06-27 2001-06-25 Echangeur de chaleur WO2002001136A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000192111A JP2002013896A (ja) 2000-06-27 2000-06-27 熱交換器
JP2000-192111 2000-06-27

Publications (1)

Publication Number Publication Date
WO2002001136A1 true WO2002001136A1 (fr) 2002-01-03

Family

ID=18691286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005408 WO2002001136A1 (fr) 2000-06-27 2001-06-25 Echangeur de chaleur

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Country Link
JP (1) JP2002013896A (fr)
WO (1) WO2002001136A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6409981B2 (ja) * 2015-09-22 2018-10-24 株式会社デンソー 熱交換器、熱交換器の製造方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01123095U (fr) * 1988-02-10 1989-08-22
JPH03279797A (ja) * 1990-03-28 1991-12-10 Hitachi Ltd 熱交換器
JPH06229696A (ja) * 1993-01-20 1994-08-19 Showa Alum Corp 熱交換器
JPH0631333Y2 (ja) * 1988-04-01 1994-08-22 サンデン株式会社 熱交換器の配管接続構造
JPH10311697A (ja) * 1997-05-09 1998-11-24 Denso Corp 熱交換器
JPH11114668A (ja) * 1997-10-09 1999-04-27 Daikin Ind Ltd ヘッダと偏平管との接続構造
JP2980445B2 (ja) * 1992-01-23 1999-11-22 昭和アルミニウム株式会社 熱交換器
JPH11351784A (ja) * 1998-06-15 1999-12-24 Showa Alum Corp 熱交換器
JPH11351783A (ja) * 1998-04-08 1999-12-24 Denso Corp 熱交換器
JP2000154993A (ja) * 1998-11-19 2000-06-06 Denso Corp 熱交換器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01123095U (fr) * 1988-02-10 1989-08-22
JPH0631333Y2 (ja) * 1988-04-01 1994-08-22 サンデン株式会社 熱交換器の配管接続構造
JPH03279797A (ja) * 1990-03-28 1991-12-10 Hitachi Ltd 熱交換器
JP2980445B2 (ja) * 1992-01-23 1999-11-22 昭和アルミニウム株式会社 熱交換器
JPH06229696A (ja) * 1993-01-20 1994-08-19 Showa Alum Corp 熱交換器
JPH10311697A (ja) * 1997-05-09 1998-11-24 Denso Corp 熱交換器
JPH11114668A (ja) * 1997-10-09 1999-04-27 Daikin Ind Ltd ヘッダと偏平管との接続構造
JPH11351783A (ja) * 1998-04-08 1999-12-24 Denso Corp 熱交換器
JPH11351784A (ja) * 1998-06-15 1999-12-24 Showa Alum Corp 熱交換器
JP2000154993A (ja) * 1998-11-19 2000-06-06 Denso Corp 熱交換器

Also Published As

Publication number Publication date
JP2002013896A (ja) 2002-01-18

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