EP0802380B1 - Condenseur de réfrigérant à réservoir intégré - Google Patents

Condenseur de réfrigérant à réservoir intégré Download PDF

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Publication number
EP0802380B1
EP0802380B1 EP19970302587 EP97302587A EP0802380B1 EP 0802380 B1 EP0802380 B1 EP 0802380B1 EP 19970302587 EP19970302587 EP 19970302587 EP 97302587 A EP97302587 A EP 97302587A EP 0802380 B1 EP0802380 B1 EP 0802380B1
Authority
EP
European Patent Office
Prior art keywords
receiver
header pipe
outlet header
refrigerant
pipe
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP19970302587
Other languages
German (de)
English (en)
Other versions
EP0802380A1 (fr
Inventor
Yasuhiro Isihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Corp
Original Assignee
Sanden Corp
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 Sanden Corp filed Critical Sanden Corp
Publication of EP0802380A1 publication Critical patent/EP0802380A1/fr
Application granted granted Critical
Publication of EP0802380B1 publication Critical patent/EP0802380B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers

Definitions

  • This invention relates to a condenser for use in a refrigerant circuit of an automotive air-conditioning system and, in particular, to a condenser with a built-in receiver for temporarily accumulating a refrigerant condensed to a liquid state.
  • a conventional condenser with a built-in receiver of the type is disclosed, for example, in United States Patent No. 5,088,294.
  • the condenser comprises an inlet header pipe connected to an inlet pipe for introducing a refrigerant, an outlet header pipe connected to an outlet pipe for discharging the refrigerant, a plurality of flat heat exchange tubes disposed in parallel to one another between the inlet and the outlet header pipes and inserted in and connected to the inlet and the outlet header pipes, and a plurality of corrugated fins arranged between every adjacent ones of the heat exchange tubes.
  • the outlet header pipe is provided with a receiver for temporarily accumulating a refrigerant condensed to a liquid state to conduct the liquid refrigerant to the outlet pipe.
  • the receiver is prepared as a separate element and is fixedly attached to the outlet header pipe.
  • the heat exchange tubes are inserted into axially arranged holes in a side of a pipe wall of the outlet header pipe in a tube inserting direction and sealed and fixed to the pipe wall.
  • the receiver is attached to the opposite side surface of the outlet header pipe in a direction opposite to the tube inserting direction.
  • a partition plate is arranged in each of the header pipes to define the flow path of the refrigerant to and from the heat exchange tubes.
  • the partition plate is inserted into the header pipe at the side opposite to the heat exchange tubes in a partition inserting direction opposite to the tube inserting direction.
  • the receiver is located at the partition plate insertion side, that is, in the partition inserting direction. Therefore, in the assembling process of the condenser, the partition plate is inserted into and bonded to the outlet header pipe before the receiver is attached to the outlet header pipe. Thus, the assembling process is complicated.
  • the partition plate is inserted into the header pipe at the same side as the exchange tubes, that is, in the partition inserting direction which is coincident with the tube inserting direction in order to simplify the assembling process.
  • a partition insertion slot for inserting the partition plate and tube insertion slots for inserting the heat exchange tubes are punched in the outlet header pipe at the same side in the same direction.
  • the partition insertion slot is formed in the close vicinity of the tube insertion slots. Therefore, it is very difficult to perform the punching operation insuring sufficient mechanical strength and the correct shape of each slot.
  • a size of the condenser in the tube inserting direction is increased by a width of the receiver so that the heat exchanging area of the condenser is reduced when a space for installing the condenser is limited.
  • This invention provides a refrigerant condenser with a built-in receiver including an outlet header pipe, a plurality of heat exchange tubes connected to said outlet header pipe through a side wall thereof, said outlet header pipe having therein one or more partition plates for controlling flow of refrigerant to define a refrigerant flow path, the receiver being provided to said outlet header pipe for temporarily accumulating refrigerant condensed into a liquid state, said outlet header pipe being part of a receiver-integral structure comprising a portion of said outlet header pipe and a receiver portion integrally formed and being in fluid communication with said outlet header pipe portion, said receiver portion extending from said outlet header portion in a direction perpendicular to a partition plate inserting direction, characterised in that said partition plate is inserted into said outlet header pipe at an opposite side of said heat exchange tubes in a partition plate inserting direction, said receiver integral type header pipe has first and second flow paths separated by an axially extending internal partition wall with a gap formed at one end thereof, said first flow path being a liquid refrigerant
  • the receiver-integral type header pipe has first and second flow paths separated by an axially extending internal partition wall with a gap formed at one end thereof.
  • the first flow path is a liquid refrigerant flow path in the receiver portion while the second flow path is the outlet header pipe portion and is further separated by the partition plate into the heat exchange tubes and an accumulating portion for the receiver portion for accumulating the refrigerant in a liquid state.
  • the receiver-integral type header pipe having the first and the second flow paths is formed by an extruded blank pipe having two axial cavities.
  • the receiver portion is connected with an outlet pipe outwardly extending from the receiver portion in a direction perpendicular to the partition inserting direction for conducting the liquid refrigerant to an exterior.
  • the conventional condenser with a built-in receiver comprises a plurality of heat exchange tubes 101 (only one being shown in Fig. 1) which are inserted into axially arranged holes in a side of a pipe wall of an outlet header pipe 102 in a tube inserting direction and connected to the outlet header pipe 102.
  • a receiver 103 is fixedly attached to the outlet header pipe 102 at the opposite side in a direction opposite to the tube inserting direction.
  • the above-mentioned structure results in various problems in an assembling process of the condenser or a machining process of parts.
  • the partition plate 100 is arranged in the outlet header pipe 102.
  • the partition plate 100 is inserted into the outlet header pipe 102 in a direction depicted at A in the figure.
  • the receiver 103 is located forward in the direction A.
  • the partition plate 100 is inserted into and bonded to the outlet header pipe 102 before the receiver 103 is attached to the outlet header pipe 102.
  • the assembling process is complicated.
  • the partition plate 100 is oppositely inserted into the outlet header pipe 102 that is, in the direction same as the tube inserting direction in order to simplify the assembling process.
  • a partition insertion slot for inserting the partition plate 100 and tube insertion holes for inserting the heat exchange tubes 101 are both punched in the pipe wall of the outlet header pipe 102 at the same side in the same direction.
  • the partition insertion slot is formed in the close vicinity of the tube insertion holes. Therefore, it is very difficult to perform the punching operation insuring sufficient mechanical strength and the correct shape of each slot.
  • the partition insertion slot is formed in the pipe wall of the outlet header pipe 102 at a position in a direction B perpendicular to the tube inserting direction A. Then, the partition plate 100 is inserted into the outlet header pipe 102 in the direction B. In this event, the tube insertion holes and the partition insertion slot are formed in the pipe wall of the outlet header pipe 102 in an orthogonal relationship. Such structure results in difficulty in punching operation and degradation in mechanical strength.
  • the tube insertion holes and the partition insertion slot are formed in the pipe wall of the outlet header pipe 102 in the orthogonal relationship, those slot and holes are too close to each other. In this event, it is difficult to avoid serious degradation in mechanical strength. In addition, mutual interference in punching operation deteriorates dimensional accuracy of the slot and holes. This results in difficulty in subsequent insertion and assembling of the heat exchange tubes 101 and the partition plate 100 to the outlet header pipe 102. Therefore, the method of punching out the slot and holes in the orthogonal relationship is not adopted because of the above-mentioned disadvantages. As traditionally, the tube insertion holes and the partition insertion slot are formed at positions angularly spaced by 180° to each other in the manner described above.
  • the receiver 103 is disposed at the opposite position of the outlet header pipe 102 to the heat exchange tubes 102 in the tube inserting direction. Therefore, a size of the refrigerant condenser increases in the tube inserting direction by the width of the receiver. This means that when the space for installing the condenser is limited, the efficient heat exchange area is reduced by presence of the receiver.
  • a condenser 1 with a built-in receiver is basically similar in structure to the conventional condenser described in the foregoing.
  • the condenser 1 comprises an inlet header pipe 2 connected to an inlet pipe 8 for introducing a refrigerant, an outlet header pipe 3 connected to an outlet pipe 9 for discharging the refrigerant, a plurality of flat heat exchange tubes 4 disposed in parallel to one another between the inlet header pipe 2 and the outlet header pipe 3 and inserted in and connected to the inlet and the outlet header pipes, a pair of reinforcing plates 6 arranged at opposite sides of an array of the heat exchange tubes 4, and a plurality of corrugated fins arranged between every adjacent ones of the heat exchange tubes 4 and between the heat exchange tubes 4 and the reinforcing plates 6.
  • the condenser 1 is of a so-called multiflow type.
  • a partition plate 10 is inserted into and bonded to the inlet header pipe 2.
  • a partition plate 11 is inserted into and bonded to the outlet header pipe 3.
  • These partition plates 10 and 11 are for defining the flow path of the refrigerant to and from the heat exchange tubes 4.
  • the outlet header pipe 3 is a portion of a receiver-integral type header pipe 7 which has also a receiver portion 13 integrally formed with and being in fluid communication with the outlet header pipe portion 3.
  • the receiver portion 13 In the receiver-integral type header pipe 7, the receiver portion 13 generally extends from the outlet header pipe portion 3 in a direction B perpendicular to a partition inserting direction A, as illustrated in Fig. 3.
  • the outlet pipe 9 for conducting the liquid refrigerant to the exterior extends continuously from the receiver portion 13 in a direction opposite to that shown at C perpendicular to the partition inserting direction.
  • the inlet pipe 8 and the outlet pipe 9 are jointed to and communicate with the inlet header pipe 2 and the outlet header pipe 3 illustrated in Figs. 2 and 3, respectively.
  • Those inlet and outlet pipes can be formed integrally with the corresponding header pipes as single bodies, respectively.
  • the outlet header pipe portion 3 is provided with tube insertion holes 12 for inserting the heat exchange tubes 4 at a side opposite to the partition plate insertion slot, as illustrated in Figs. 3, 4 and 5.
  • the receiver-integral type header pipe 7 has first and second axially-extending flow paths separated by an internal partition wall 16 with a gap 17 formed at one end thereof, generally providing the receiver portion 13 and the outlet header pipe 3, respectively. More specifically, the first flow path shown at 14 generally serves as a portion for guiding the liquid refrigerant in the receiver portion 13 to the outlet pipe 9. The second flow path is further separated by the radially-extending partition plate 11 into an upper heat exchanging flow path for the refrigerant to and from the heat exchange tubes 4 and a lower portion which is also connected to the one or more heat exchange tubes 4.
  • the receiver-integral type header pipe 7 is closed at opposite ends by caps, a lower one of which is shown at 18 in Fig. 6.
  • the receiver-integral type header pipe 7 having the above-mentioned two flow paths is formed as an integral element from an extruded pipe blank having two axial cavities.
  • the refrigerant in a gas/liquid mixed phase flows into the inlet header pipe 2 through the inlet pipe 8.
  • the refrigerant flows into the outlet header pipe portion 3 via one or more (two in the figure) of the heat exchange tubes 4.
  • the refrigerant further flows through other heat exchange tubes 4 (three in the figure) back into the inlet header pipe 2, from which the refrigerant flows through the other heat exchange tubes 4 (three in the figure) into the accumulating portion 15 (Fig. 4) of the receiver-integral header pipe 7.
  • the refrigerant is condensed to a liquid state completely.
  • the liquid refrigerant accumulated in the accumulating portion 15 flows out from the outlet pipe 9 through the first flow path 14.
  • the receiver portion 13 and the outlet pipe 9 extend from the outlet header pipe portion 3 in the direction B perpendicular to the tube inserting direction and the partition inserting direction A.
  • the partition insertion slot can be formed in the outlet header pipe portion 3 of the receiver-integral type header pipe 7 in the manner similar to the ordinary punching operation in the conventional condenser shown in Fig. 1. Through the partition insertion slot, the partition plate 11 can easily be inserted and bonded by brazing.
  • the partition insertion slot is formed in the pipe wall of the outlet header pipe portion 3 at the side opposite to the tube insertion holes 12, the receiver-integral type header pipe 7 has such a structure that the receiver portion 13 is formed integral with the outlet header pipe portion extending from the outlet header pipe 3 in the direction B perpendicular to the tube inserting direction and the partition inserting direction and has a relatively thick side wall. Accordingly, upon punching the tube insertion holes 12 and partition insertion slots, neither the mechanical strength of the outlet header pipe portion 3 nor the dimensional accuracy of the insertion holes and slot is deteriorated.
  • the partition plate 11 is easily arranged in the outlet header pipe 3 without deterioration in machinability of the insertion slots and in mechanical strength. Therefore, the condenser 1 itself can be easily manufactured.
  • the receiver portion 13, the outlet header pipe portion 3, and the outlet pipe 9 in the receiver-integral type header pipe 7 are serially arranged in the direction C of the air flow to be heat exchanged, as seen from Fig. 3. Therefore, an effective heat exchange area of a heat exchanging region extending in the direction perpendicular to the direction C is not reduced by presence of the receiver 13.
  • the condenser 1 of this invention has the built-in receiver, the efficient heat exchange area is equivalent to that obtained in the condenser having no built-in receiver.
  • the structure with the receiver-integral type header pipe 7 of this invention is applicable to various other types of condensers having built-in receivers.
  • the receiver-integral type header pipe 7 can be formed not only by the extruded pipe blank with two cavities but by any other appropriate materials. For example, use can be made of a member comprising a combination of semicylindrical pipe members or another member having a clad structure using a brazing material.

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

Claims (2)

  1. Condenseur de réfrigérant (1) muni d'un récepteur intégré, comprenant un tuyau collecteur de sortie (3), un certain nombre de tubes d'échange de chaleur (4) reliés au tuyau collecteur de sortie à travers une paroi latérale de celui-ci, le tuyau collecteur de sortie comportant dans celui-ci une ou plusieurs plaques de séparation (11) pour commander l'écoulement du réfrigérant de manière à définir un chemin d'écoulement de réfrigérant, le récepteur étant fourni au tuyau collecteur de sortie pour accumuler temporairement du réfrigérant condensé à l'état liquide, le tuyau collecteur de sortie faisant partie d'une structure à récepteur intégré comprenant une partie du tuyau collecteur de sortie et une partie de récepteur (13) formée d'un seul tenant et se trouvant en communication de fluide avec la partie de tuyau collecteur de sortie, la partie de récepteur partant de la partie de tuyau collecteur de sortie dans une direction perpendiculaire à la direction d'introduction de plaque de séparation,
    caractérisé en ce que
    la plaque de séparation est introduite dans le tuyau collecteur de sortie du côté opposé des tubes d'échange de chaleur, dans la direction d'introduction de plaque de séparation, le tuyau collecteur de type à récepteur intégré comportant un premier chemin d'écoulement et un second chemin d'écoulement séparés par une paroi de séparation intérieure (16) s'étendant axialement avec un intervalle (17) formé à une extrémité de celle-ci, le premier chemin d'écoulement étant un chemin d'écoulement de réfrigérant liquide (14) formé dans la partie de récepteur, tandis que le second chemin d'écoulement est la partie de tuyau collecteur de sortie qui est en outre séparée, par la plaque de séparation, en le chemin d'écoulement d'échange de chaleur pour le réfrigérant entrant et sortant des tubes d'échange de chaleur, et en une partie d'accumulation (15) pour la partie de récepteur, cette partie d'accumulation étant destinée à accumuler le réfrigérant à l'état liquide.
  2. Condenseur de réfrigérant (1) muni d'un récepteur intégré, selon la revendication 1,
    dans lequel
    le tuyau collecteur de type à récepteur intégré est formé par un tuyau d'ébauche extrudé comportant deux cavités axiales.
EP19970302587 1996-04-17 1997-04-16 Condenseur de réfrigérant à réservoir intégré Expired - Lifetime EP0802380B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP121090/96 1996-04-17
JP12109096A JPH09280773A (ja) 1996-04-17 1996-04-17 受液部内蔵型凝縮器
JP12109096 1996-04-17

Publications (2)

Publication Number Publication Date
EP0802380A1 EP0802380A1 (fr) 1997-10-22
EP0802380B1 true EP0802380B1 (fr) 2001-01-31

Family

ID=14802633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970302587 Expired - Lifetime EP0802380B1 (fr) 1996-04-17 1997-04-16 Condenseur de réfrigérant à réservoir intégré

Country Status (3)

Country Link
EP (1) EP0802380B1 (fr)
JP (1) JPH09280773A (fr)
DE (1) DE69703998T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122360B4 (de) * 2000-05-09 2005-04-21 Sanden Corp., Isesaki Unterkühlungskondensator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6095239A (en) 1996-08-12 2000-08-01 Calsonic Kansei Corporation Integral-type heat exchanger
ATE441073T1 (de) * 2001-11-08 2009-09-15 Behr Gmbh & Co Kg Wärmetauscher
US10124452B2 (en) 2013-08-09 2018-11-13 Hamilton Sundstrand Corporation Cold corner flow baffle
EP2835312B1 (fr) * 2013-08-09 2018-01-17 Hamilton Sundstrand Corporation Déflecteur d'écoulement de coin froid
EP3193128B1 (fr) * 2016-01-15 2020-04-22 Hamilton Sundstrand Corporation Échangeur de chaleur avec déflecteur d'écoulement de coin froid
CN113654277B (zh) * 2021-08-20 2023-01-17 江苏山源热工技术有限公司 一种冷凝器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3326537B2 (ja) * 1992-09-10 2002-09-24 株式会社ゼクセルヴァレオクライメートコントロール レシーバタンク一体型コンデンサ
JP3322751B2 (ja) * 1993-04-26 2002-09-09 サンデン株式会社 熱交換器
JPH07280389A (ja) * 1994-04-06 1995-10-27 Nippondenso Co Ltd モジュレータ一体型冷媒凝縮器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122360B4 (de) * 2000-05-09 2005-04-21 Sanden Corp., Isesaki Unterkühlungskondensator

Also Published As

Publication number Publication date
JPH09280773A (ja) 1997-10-31
DE69703998T2 (de) 2001-06-13
DE69703998D1 (de) 2001-03-08
EP0802380A1 (fr) 1997-10-22

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