EP0429401A2 - A heat exchanger for motor-vehicle air-conditioning systems - Google Patents
A heat exchanger for motor-vehicle air-conditioning systems Download PDFInfo
- Publication number
- EP0429401A2 EP0429401A2 EP90830459A EP90830459A EP0429401A2 EP 0429401 A2 EP0429401 A2 EP 0429401A2 EP 90830459 A EP90830459 A EP 90830459A EP 90830459 A EP90830459 A EP 90830459A EP 0429401 A2 EP0429401 A2 EP 0429401A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube plate
- heat exchanger
- motor
- header
- vehicle air
- 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.)
- Withdrawn
Links
Images
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
- F28F9/0219—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
- F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
-
- 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
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/14—Arrangements for sealing elements into header boxes or end plates by dismountable joints by force-joining
Definitions
- the present invention relates to a heat exchanger, particularly a liquid-gas, liquid-liquid or gas-gas heat exchanger for motor-vehicle air-conditioning or engine-cooling systems, of the type including at least one header with a tube plate of polymeric material.
- the hydraulic seal between the tube matrix of the exchanger and the tube plates is normally achieved by the expansion of the tubes in the corresponding holes in the plate or by the interposition of a gasket of elastomeric material having a plurality of holes with raised edges complementary to the holes in the tube plate.
- the object of the present invention is to provide a heat exchanger which overcomes the said problems.
- each hole in the tube plate has a sealing ring of elastomeric material which is integral with the tube plate and is adapted to ensure the hydraulic sealing of the header.
- the sealing rings which are formed by co-moulding with the tube plate, achieve a saving in the final cost of the product (less elastomeric material is used, the implementation cost is lower, and the heat exchanger is easier to assemble).
- each header has a cover of polymeric material which is welded to the tube plate, for example by ultrasonic mirror welding, or is fixed thereto either mechanically or by chemical welding.
- a header for a water-air heat exchanger for installation in the air-conditioning system of a motor vehicle is generally indicated 10.
- the header 10 has a tube plate 12 of polymeric material, to the periphery whereof a- convex cover 14, also of polymeric material, is welded by ultrasonic or hot-blade welding.
- the tube plate 12 has a plurality of holes 16 (which may be of various shapes, circular, eliptical, etc.) for the passage of tubes T of the exchanger.
- a sheet 17 of elastomeric material is co-moulded on the face of the tube plate which faces the cover 14 and defines a plurality of sealing rings 18 in correspondence with the holes 16.
- rings 19 of elastomeric material are co-moulded with the tube plate in correspondence with the through-holes 16.
- Each sealing ring 18 or 19 has a respective annular portion 18a or 19a with an outside diameter substantially corresponding to the diameter of the corresponding hole 13 in the tube plate and an inside diameter approximately equal to the outside diameter of a metal tube T to be inserted sealingly in the hole 16.
- the material used for the manufacture of the cover 14 of the tube plate 12 is a thermoplastics technopolymer (for example polyamide, polypropylene, etc.), or an injectable thermosetting polymer, whilst a thermoplastics elastomer may, to advantage, be used for the sealing rings 18 and 19.
- a thermoplastics technopolymer for example polyamide, polypropylene, etc.
- an injectable thermosetting polymer whilst a thermoplastics elastomer may, to advantage, be used for the sealing rings 18 and 19.
Abstract
A header (10) for a radiator for motor-vehicle air conditioning systems has a tube plate (12) of polymeric material provided with a plurality of sealing rings (18,19) co-moulded with the tube plate (12) and, arranged in correspondence with the holes (16) for sealingly connecting the tubes(T) of the exchanger to the header (10).
Description
- The present invention relates to a heat exchanger, particularly a liquid-gas, liquid-liquid or gas-gas heat exchanger for motor-vehicle air-conditioning or engine-cooling systems, of the type including at least one header with a tube plate of polymeric material.
- The hydraulic seal between the tube matrix of the exchanger and the tube plates is normally achieved by the expansion of the tubes in the corresponding holes in the plate or by the interposition of a gasket of elastomeric material having a plurality of holes with raised edges complementary to the holes in the tube plate.
- The first of these solutions requires levels of precision which are somewhat complex and expensive to achieve whilst, in the second, the use of the gasket is burdensome both in terms of costs and in terms of the time required for the assembly of the exchanger.
- The object of the present invention is to provide a heat exchanger which overcomes the said problems.
- According to the invention, this object is achieved by virtue of the fact that each hole in the tube plate has a sealing ring of elastomeric material which is integral with the tube plate and is adapted to ensure the hydraulic sealing of the header.
- The sealing rings, which are formed by co-moulding with the tube plate, achieve a saving in the final cost of the product (less elastomeric material is used, the implementation cost is lower, and the heat exchanger is easier to assemble).
- Preferably, each header has a cover of polymeric material which is welded to the tube plate, for example by ultrasonic mirror welding, or is fixed thereto either mechanically or by chemical welding.
- Further advantages and characteristics of the heat exchanger according to the invention will become clear from the detailed description which follows, provided purely by way of non-limiting example, with reference to the appended drawings, in which
- - Figure 1 is a perspective view of the header of an exchanger according to the invention,
- Figures 2 and 3 are sections taken on the lines II-II and III-III of Figure 1 respectively, showing two variants.
- With reference to the drawings, a header for a water-air heat exchanger for installation in the air-conditioning system of a motor vehicle is generally indicated 10. The
header 10 has atube plate 12 of polymeric material, to the periphery whereof a-convex cover 14, also of polymeric material, is welded by ultrasonic or hot-blade welding. - The
tube plate 12 has a plurality of holes 16 (which may be of various shapes, circular, eliptical, etc.) for the passage of tubes T of the exchanger. In the first version (Figure 2), asheet 17 of elastomeric material is co-moulded on the face of the tube plate which faces thecover 14 and defines a plurality ofsealing rings 18 in correspondence with theholes 16. In the second version (Figure 3),rings 19 of elastomeric material, adapted to act as sealing rings, are co-moulded with the tube plate in correspondence with the through-holes 16. Eachsealing ring annular portion corresponding hole 13 in the tube plate and an inside diameter approximately equal to the outside diameter of a metal tube T to be inserted sealingly in thehole 16. - To advantage, the material used for the manufacture of the
cover 14 of thetube plate 12 is a thermoplastics technopolymer (for example polyamide, polypropylene, etc.), or an injectable thermosetting polymer, whilst a thermoplastics elastomer may, to advantage, be used for thesealing rings
Claims (4)
1. A heat-exchanger, particularly a liquid-gas, liquid-liquid or gas-gas heat exchanger for motor-vehicle air-conditioning or engine-cooling systems, of the type including at least one header (10) with a tube plate (12) of polymeric material, characterised in that each hole (16) in the tube plate (12) has a sealing ring (18, 19) of elastomeric material which is integral with the tube plate (12) and is adapted to ensure the hydraulic sealing of the header (10).
2. An exchanger according to Claim 1, characterised in that the sealing rings (18, 19) are produced by co-moulding with the tube plate (12).
3. An exchanger according to Claim 2, characterised in that the sealing rings (18) are defined by edges (18a) of holes in a sheet (17) of elastomeric material co-moulded on one face of the tube plate (12).
4. An exchanger according to Claim 2, characterised in that the sealing rings are constituted by rings (19) of elastomeric material co-moulded with the tube plate (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT05342889U IT222294Z2 (en) | 1989-10-20 | 1989-10-20 | HEAT EXCHANGER FOR VEHICLE AIR CONDITIONING SYSTEMS. |
IT5342889U | 1989-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0429401A2 true EP0429401A2 (en) | 1991-05-29 |
EP0429401A3 EP0429401A3 (en) | 1991-12-11 |
Family
ID=11282671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900830459 Withdrawn EP0429401A3 (en) | 1989-10-20 | 1990-10-16 | A heat exchanger for motor-vehicle air-conditioning systems |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0429401A3 (en) |
IT (1) | IT222294Z2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0578565A1 (en) * | 1992-07-08 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger with several rows of tubes, particularly for motor vehicles |
EP0578568A1 (en) * | 1992-07-09 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger having a bundle with parallel tubes, particularly for motor vehicles |
EP0578566A1 (en) * | 1992-07-08 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger with several rows of tubes, particularly for motor vehicles |
FR2770633A1 (en) * | 1997-11-06 | 1999-05-07 | Valeo Thermique Moteur Sa | Heat-exchanger with tube bundles for different media |
EP0840084A3 (en) * | 1996-10-30 | 1999-07-28 | REHAU AG + Co | Heat exchanger |
EP0978702A1 (en) * | 1998-07-09 | 2000-02-09 | Sierra S.p.A. | Device for a heat-exchange terminal with a finned assembly |
ES2195701A1 (en) * | 2000-01-12 | 2003-12-01 | Pacfab Inc Una Soc De Delaware | Composite polymer manifold for water heating unit |
WO2018147998A1 (en) * | 2017-02-07 | 2018-08-16 | Caterpillar Inc. | High temperature capable tube-to-header mechanical joint for air-to-air aftercooler |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3447603A (en) * | 1967-07-03 | 1969-06-03 | Gen Electric | Means for resiliently mounting tubular members |
FR2238907A1 (en) * | 1973-07-27 | 1975-02-21 | Delanair Ltd | |
DE3124216A1 (en) * | 1981-06-20 | 1982-12-30 | Ventos Lüftungstechnik GmbH, 4504 Georgsmarienhütte | Crossflow heat exchanger |
EP0113003A1 (en) * | 1982-12-22 | 1984-07-11 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG | Heat exchanger |
EP0177389A1 (en) * | 1984-09-25 | 1986-04-09 | Valeo | Tube bundle heat exchanger, especially for a motor vehicle |
GB2171192A (en) * | 1985-02-15 | 1986-08-20 | Sueddeutsche Kuehler Behr | Heat exchanger |
FR2636130A1 (en) * | 1988-09-06 | 1990-03-09 | Diesel Kiki Co | HEAT EXCHANGER AND METHOD FOR MANUFACTURING HEAT EXCHANGER SEAL |
-
1989
- 1989-10-20 IT IT05342889U patent/IT222294Z2/en active IP Right Grant
-
1990
- 1990-10-16 EP EP19900830459 patent/EP0429401A3/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3447603A (en) * | 1967-07-03 | 1969-06-03 | Gen Electric | Means for resiliently mounting tubular members |
FR2238907A1 (en) * | 1973-07-27 | 1975-02-21 | Delanair Ltd | |
DE3124216A1 (en) * | 1981-06-20 | 1982-12-30 | Ventos Lüftungstechnik GmbH, 4504 Georgsmarienhütte | Crossflow heat exchanger |
EP0113003A1 (en) * | 1982-12-22 | 1984-07-11 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG | Heat exchanger |
EP0177389A1 (en) * | 1984-09-25 | 1986-04-09 | Valeo | Tube bundle heat exchanger, especially for a motor vehicle |
GB2171192A (en) * | 1985-02-15 | 1986-08-20 | Sueddeutsche Kuehler Behr | Heat exchanger |
FR2636130A1 (en) * | 1988-09-06 | 1990-03-09 | Diesel Kiki Co | HEAT EXCHANGER AND METHOD FOR MANUFACTURING HEAT EXCHANGER SEAL |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5299636A (en) * | 1992-07-08 | 1994-04-05 | Valeo Thermique Moteur | Heat exchanger having more than one set of tubes, in particular for a motor vehicle |
US5301748A (en) * | 1992-07-08 | 1994-04-12 | Valeo Thermique Moteur | Heat exchange having more than one set of tubes, in particular for a motor vehicle |
EP0578566A1 (en) * | 1992-07-08 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger with several rows of tubes, particularly for motor vehicles |
FR2693544A1 (en) * | 1992-07-08 | 1994-01-14 | Valeo Thermique Moteur Sa | Heat exchanger comprising several rows of tubes, in particular for motor vehicles. |
EP0578565A1 (en) * | 1992-07-08 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger with several rows of tubes, particularly for motor vehicles |
FR2693545A1 (en) * | 1992-07-08 | 1994-01-14 | Valeo Thermique Moteur Sa | Heat exchanger with several rows of tubes, especially for motor vehicles. |
US5318113A (en) * | 1992-07-09 | 1994-06-07 | Valeo Thermique Moteur | Heat exchanger with a bundle of parallel tubes, in particular for a motor vehicle |
EP0578568A1 (en) * | 1992-07-09 | 1994-01-12 | Valeo Thermique Moteur | Heat-exchanger having a bundle with parallel tubes, particularly for motor vehicles |
FR2693546A1 (en) * | 1992-07-09 | 1994-01-14 | Valeo Thermique Moteur Sa | Parallel tube bundle heat exchanger, in particular for a motor vehicle. |
EP0840084A3 (en) * | 1996-10-30 | 1999-07-28 | REHAU AG + Co | Heat exchanger |
FR2770633A1 (en) * | 1997-11-06 | 1999-05-07 | Valeo Thermique Moteur Sa | Heat-exchanger with tube bundles for different media |
US6561263B1 (en) | 1997-11-06 | 2003-05-13 | Valeo Thermique Moteur | Heat exchange device with two arrays of tubes in particular for a motor vehicle, and a method of manufacturing it |
EP0978702A1 (en) * | 1998-07-09 | 2000-02-09 | Sierra S.p.A. | Device for a heat-exchange terminal with a finned assembly |
ES2195701A1 (en) * | 2000-01-12 | 2003-12-01 | Pacfab Inc Una Soc De Delaware | Composite polymer manifold for water heating unit |
WO2018147998A1 (en) * | 2017-02-07 | 2018-08-16 | Caterpillar Inc. | High temperature capable tube-to-header mechanical joint for air-to-air aftercooler |
Also Published As
Publication number | Publication date |
---|---|
IT222294Z2 (en) | 1995-02-17 |
IT8953428V0 (en) | 1989-10-20 |
IT8953428U1 (en) | 1991-04-20 |
EP0429401A3 (en) | 1991-12-11 |
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18D | Application deemed to be withdrawn |
Effective date: 19920612 |