EP0108958B1 - Raccordement de tubes métalliques d'échangeurs de chaleur avec le fond d'un boîte à eau - Google Patents

Raccordement de tubes métalliques d'échangeurs de chaleur avec le fond d'un boîte à eau Download PDF

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Publication number
EP0108958B1
EP0108958B1 EP83110458A EP83110458A EP0108958B1 EP 0108958 B1 EP0108958 B1 EP 0108958B1 EP 83110458 A EP83110458 A EP 83110458A EP 83110458 A EP83110458 A EP 83110458A EP 0108958 B1 EP0108958 B1 EP 0108958B1
Authority
EP
European Patent Office
Prior art keywords
tubes
water tank
apertures
arrangement according
pressed
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
Application number
EP83110458A
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German (de)
English (en)
Other versions
EP0108958A2 (fr
EP0108958A3 (en
Inventor
Reinhold Kuchelmeister
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0108958A2 publication Critical patent/EP0108958A2/fr
Publication of EP0108958A3 publication Critical patent/EP0108958A3/de
Application granted granted Critical
Publication of EP0108958B1 publication Critical patent/EP0108958B1/fr
Expired legal-status Critical Current

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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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • 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
    • 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
    • F28F9/162—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using bonding or sealing substances, e.g. adhesives

Definitions

  • the invention relates to a connection arrangement for metallic tubes of a heat exchanger with a bottom of a water box, the bottom consisting of plastic and being an integral part of the water box.
  • a heat exchanger is known in which the water boxes consist of a tubular plastic part, the tube sheet being an integral part of the water box.
  • the water tank has a plurality of openings, each of which is provided with a rubber seal, into which the ends of the heat exchanger tubes are inserted.
  • the seals only have the task of preventing the heat exchanger fluid from escaping; however, the water box is not attached to the heat exchanger block.
  • lateral fastening elements in the form of frame parts are provided, which clamp the water boxes and the heat exchanger block between them.
  • connection arrangements for heat exchanger tubes with a water tank in which the tubes are fastened and sealed in a metallic tube sheet by radial expansion (DE-OS 24 48 332).
  • DE-OS 24 48 332 radial expansion
  • connection arrangement of the type defined in the preamble of claim 1, which, in addition to reliable sealing, also ensures high mechanical strength without separate fastening means.
  • the openings can be cylindrical and can be provided with a run-on cone at their outer end; however, they can also be designed to taper conically in the direction of the interior of the water tank.
  • the material pairing of the metallic pipe and the plastic water tank has a particularly favorable effect, since the plastic material partly or completely fills the grooves due to its greater elasticity.
  • the materials and the dimensions of the parts are selected so that the pipes are elastically constricted by the pressing in and at the same time the openings in the base are elastically widened. It is particularly useful to press the pipe end as far into the bottom of the water box that it protrudes a little from the inside of the water box and springs back into its original, enlarged form due to the elasticity of the material. As a result, the end of the opening lying on the inside of the water box forms a sealing edge on which there is increased pressure due to the elastically widened end.
  • the deformation of the floor and the pipes does not have to be in the purely elastic range, great strength and good sealing are achieved even if one of the two parts is plastically or elastically and plastically deformed. This has the advantage that larger manufacturing tolerances of the pipe outer diameter and the openings are permissible and a perfect connection is nevertheless achieved.
  • a curable sealant is preferably applied in microencapsulated form, the microencapsulation being destroyed by the axial pressing. After exiting the capsules, the sealant is distributed on the connecting surface and collects, for example, in unevenness in the tubular surface or the opening wall.
  • connection arrangement according to the invention is explained in more detail below with reference to the drawing.
  • FIG. 1 shows a water box 1 made of a plastic material, the bottom 2 of which is an integral part of the water box 1.
  • the thickness of the bottom 2 is substantially greater than the wall thickness of the rest of the water box 1.
  • Inside the water box 1 there is a vertical partition 3, through which two chambers, namely an inlet chamber 4 and a return chamber 5, are formed in the water box 1.
  • the partition 3 also serves to stiffen the water box 1.
  • the water box 1 has projections 11 and 12 at some predetermined points, which serve to clamp the water box in order to axially press in the pipe ends 7 of the heat exchanger block 10.
  • the support force acts on the projections 11.
  • the projections 11 and 12 also contribute to the stiffening of the water box 1.
  • the detail Z from FIG. 1 is shown enlarged in FIG.
  • the bottom 2 has a cylindrical opening 6 with a conical run-up 14, which is intended to facilitate the insertion of the end 7 of the tubular fork 8.
  • the pipe end 7 has a sawtooth-shaped structure on its outer surface, which is formed by correspondingly shaped projections 15 and grooves 16, each of which extends in the circumferential direction. Since the outer diameter of the tube forks 8 is originally larger than the diameter of the opening 6, when the tube end 7 is pressed axially into the base 2, the tube end 7 is constricted elastically and the opening 6 is widened elastically. The deformation of the base or of the openings or of the pipes can also be in the plastic or elastic-plastic area.
  • the axial pressing in of the pipes creates a strong interference fit between the pipes and the bottom of the water tank.
  • the projections 15 ensure that a plurality of sealing edges are formed between the pipe end 7 and the base 2, it being possible for the cavities lying between the respective sealing edges and formed by the grooves 16 to be filled with a sealing agent.
  • the end of the opening 6 lying on the inside of the water tank forms a sealing edge 17, on which the spring-loaded end 7 ′ results in increased pressure.
  • FIG. 3 shows an embodiment variant of FIG. 2, a cylindrical opening 6 being shown in the bottom 2.
  • the opening 6 has a starting cone 14 'which is longer than in FIG. 2 and which has the opening angle ⁇ with respect to the central axis.
  • the pipe end 7 has a smooth outer surface, which lies tightly against the wall of the opening 6 in the base 2 over its entire axial length.
  • FIG. 4 shows a section through a water box with pressed-in heat exchanger tubes, the water box 1 having a base 2 being produced as a one-piece plastic part.
  • Conical openings 6 tapering towards the interior of the water tank are arranged in the bottom 2, into which pipe ends 7 of heat exchanger pipes 18 are pressed.
  • the pipe ends 7 are pressed into the base 2, due to the conical design of the openings 6, there is an increasing constriction of the tube ends 7 and an increasing elastic deformation of the base 2, the deformation of one of the two parts also being able to be in the plastic or elastic-plastic range .
  • the tube ends 7 are pressed in so far that they have a part 7 'projecting into the interior of the water tank, which springs back into its original shape due to the previous elastic constriction, which is lifted when it enters the interior. In this case too, there is a sealing edge 17 at the inner end of the opening 6 as in FIG. 3.
  • FIG. 5 shows a section of the water tank bottom 2 with a conical opening 6.
  • the conical opening 6 has three in Grooves 19 extending in the circumferential direction.
  • the wall of the opening 6 and the grooves 19 are coated with a lubricant and sealant 20, the lubricant and sealant 20 being applied in a microencapsulated form.
  • FIG. 6 shows the section of the water tank bottom 6 according to FIG. 5, but with the pipe end 7 pressed in.
  • microencapsulation has the advantage that the sealant and lubricant is applied like a dry substance without the agent contained in the capsules being subject to a chemical change, for example due to aging or reaction.
  • the microencapsulation thus makes it possible to provide the openings in the water tank floor with a lubricant and / or sealant even when the water tank is being produced, even if the water tank is stored for a long time until it is connected to the heat exchanger block.

Landscapes

  • 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)

Claims (12)

1. Raccordement de tubes métalliques d'un échangeur de chaleur avec un fond d'une boîte à eau, où le fond est en matière plastique et fait partie intégrante de la boîte à eau, caractérisé par le fait que les tubes (8, 18) sont fixés et étanchéi- fiés vis-à-vis de la boîte à eau (1) par emmanchement axial dans des orifices (6) du fond (2), les orifices (6) présentant une ou plusieurs rainures (19) s'étendant en direction circonférentielle, les orifices (6) possédant, avant l'emmanchement des tubes (8, 18) et au moins dans une zone partielle, un diamètre inférieur au diamètre extérieur des tubes, et un ajustement fortement serré étant produit par l'emmanchement axial des extrémités (7) des tubes dans les orifices (6).
2. Raccordement de tubes métalliques d'un échangeur de chaleur avec un fond d'une boîte à eau, où le fond est en matière plastique et fait partie intégrante de la boîte à eau, caractérisé par le fait que les tubes (8, 18) sont fixés et étanchéi- fiés vis-à-vis de la boîte à eau (1) par emmanchement axial dans des orifices (6) du fond (2), les orifices (6) possédant, avant l'emmanchement des tubes (8, 18) et au moins dans une zone partielle, un diamètre inférieur au diamètre extérieur des tubes, et un ajustement fortement serré étant produit par l'emmanchement axial des extrémités (7) des tubes dans les orifices (6), et la partie des tubes (extrémités 7 de tube) qui se trouve dans le fond (2) de la boîte à eau (1) présentant sur sa surface extérieure une structure en dents de scie.
3. Raccordement selon la revendication 1 ou 2, caractérisé par le fait que les orifices (6) ont une forme cylindrique, et sont munis sur leurs extrémités situées à l'extérieur d'un cône d'introduction (14).
4. Raccordement selon la revendication 1 ou 2, caractérisé par le fait que les orifices (6) sont rétrécis coniquement vers l'intérieur de la boîte à eau (1).
5. Raccordement selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'emmanchement entraîne le rétrécissement élastique des tubes (extrémités 7 de tube) et l'élargissement élastique des orifices (6) prévus dans le fond (2).
6. Raccordement selon la revendication 5, caractérisé par le fait que les tubes (7) ou les orifices (6) subissent en outre une déformation plastique.
7. Raccordement selon la revendication 5 ou 6, caractérisé par le fait qu'une extrémité (7) des tubes (8, 18) dépasse du fond (2) sur le côté intérieur de la boîte à eau (1) et, du fait de l'élasticité du matériau, y revient élastiquement à sa forme initiale.
8. Raccordement selon l'une quelconque des revendications précédentes, caractérisé par le fait que les tubes (extrémités 7 de tube) et/ou les orifices sont, avant l'emmanchement, pourvus d'un produit d'étanchéité durcissable.
9. Raccordement selon la revendication 8, caractérisé par le fait que le produit d'étanchéité est appliqué sous une forme microencapsulée, et que la microencapsulation est détruite par l'emmanchement axial.
10. Raccordement selon l'une quelconque des revendications précédentes, caractérisé par le fait que la boîte à eau (1) présente des moyens (3, 11, 12) pour la rigidifier et la soutenir pendant l'emmanchement des tubes (8, 18).
11. Raccordement selon l'une quelconque des revendications précédentes, caractérisé par le fait que la boîte à eau (1) est réalisée en un polyamide ayant une teneur en fibres de verre de 30 %.
12. Raccordement selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'afin de faciliter l'emmanchement, les extrémités des tubes présentent un rétrécissement.
EP83110458A 1982-11-13 1983-10-20 Raccordement de tubes métalliques d'échangeurs de chaleur avec le fond d'un boîte à eau Expired EP0108958B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3242072A DE3242072C2 (de) 1982-11-13 1982-11-13 Verbindungsanordnung für metallische Rohre eines Wärmetauschers mit einem Boden eines Wasserkastens
DE3242072 1982-11-13

Publications (3)

Publication Number Publication Date
EP0108958A2 EP0108958A2 (fr) 1984-05-23
EP0108958A3 EP0108958A3 (en) 1984-08-15
EP0108958B1 true EP0108958B1 (fr) 1986-03-26

Family

ID=6178083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110458A Expired EP0108958B1 (fr) 1982-11-13 1983-10-20 Raccordement de tubes métalliques d'échangeurs de chaleur avec le fond d'un boîte à eau

Country Status (3)

Country Link
EP (1) EP0108958B1 (fr)
DE (2) DE3242072C2 (fr)
ES (1) ES526160A0 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235973A (en) * 1989-07-06 1991-03-20 Sterling Engineered Products L Vehicle radiator assemblies
FR2676534B1 (fr) * 1991-05-14 1999-02-12 Valeo Thermique Moteur Sa Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile, et procede pour sa fabrication.
HU9200588D0 (en) * 1992-02-24 1992-05-28 Energiagazdalkodasi Intezet Pipe joint consisting of pipe wall and pipe as well as method for producing said joint
DE19719259B4 (de) * 1997-05-07 2005-08-18 Valeo Klimatechnik Gmbh & Co. Kg Flachrohrwärmetauscher für Kraftfahrzeuge mit an Krägen eines Rohrbodens gehaltenen Flachrohren
KR101283406B1 (ko) * 2006-06-30 2013-07-08 삼성전자주식회사 기지국과의 거리 팩터를 이용하여 셀 셀렉션/리셀렉션을수행하는 이동통신단말기 및 그 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448338A1 (de) * 1974-10-10 1976-04-15 Bayer Ag Stabilisierte chalkogenide auf der basis von cadmium
DE2435632B2 (de) * 1973-08-01 1980-03-13 S.A. Des Usines Chausson, Asnieres, Hauts-De-Seine (Frankreich) Vorrichtung zur Verbindung und mechanischen Verriegelung rohrförmiger Wasserkästen eines Strahlkörpers

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DE1068280B (fr) * 1959-11-05
DE402523C (de) * 1924-01-19 1924-09-18 Hubert Theisen Vorrichtung zum Befestigen von Ekonomiserrohren
US2240537A (en) * 1938-03-14 1941-05-06 Fred M Young Composition header and tube plate for radiators
US2420721A (en) * 1944-01-07 1947-05-20 Pennella Samuel Condenser tube packing
FR1089816A (fr) * 1952-12-22 1955-03-22 A Maurer Ing échangeur de chaleur tubulaire démontable
US3426841A (en) * 1966-05-18 1969-02-11 Herbert G Johnson Heat exchangers having plastic components
US3428338A (en) * 1966-08-22 1969-02-18 Vernon Tool Co Ltd Mechanical joint and method of making same
DE2448332C2 (de) * 1974-10-10 1983-11-10 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Wärmetauscher für Fahrzeuge
FR2341095A1 (fr) * 1976-02-10 1977-09-09 Hamon Dispositif de fixation etanche d'un tube dans une paroi d'une enceinte sous pression hydrostatique et son application a des batteries de tubes d'echange thermique
FR2349813A1 (fr) * 1976-04-26 1977-11-25 Chausson Usines Sa Echangeur de chaleur a boites a eau en matiere synthetique moulee
FR2371662A1 (fr) * 1976-11-19 1978-06-16 Chausson Usines Sa Joint souple pour tubes et collecteurs d'echangeurs de chaleur
FR2497567B1 (fr) * 1981-01-05 1986-03-21 Dagues Marc Echangeur de chaleur a faisceau de tubes paralleles et son mode de fabrication
DE3107370A1 (de) * 1981-02-27 1982-09-16 Hackforth GmbH & Co KG, 4690 Herne "befestigung eines metallrohres in einer bohrung einer wandung aus metall"
DE3133665C2 (de) * 1981-08-26 1984-06-07 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Verbindung von Rohren eines Wärmetauscherblocks mit einem Anschlußkasten, insbesondere für einen Verdampfer
FR2512941B1 (fr) * 1981-09-14 1987-04-24 Valeo Echangeur de chaleur a faisceau de tubes paralleles et procede d'assemblage de ses elements constitutifs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2435632B2 (de) * 1973-08-01 1980-03-13 S.A. Des Usines Chausson, Asnieres, Hauts-De-Seine (Frankreich) Vorrichtung zur Verbindung und mechanischen Verriegelung rohrförmiger Wasserkästen eines Strahlkörpers
DE2448338A1 (de) * 1974-10-10 1976-04-15 Bayer Ag Stabilisierte chalkogenide auf der basis von cadmium

Also Published As

Publication number Publication date
DE3242072A1 (de) 1984-05-17
EP0108958A2 (fr) 1984-05-23
DE3362711D1 (en) 1986-04-30
DE3242072C2 (de) 1985-10-24
EP0108958A3 (en) 1984-08-15
ES8405509A1 (es) 1984-06-16
ES526160A0 (es) 1984-06-16

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