WO2006024734A1 - Echangeur de chaleur a assemblage mecanique et joint d’etancheite pour cet echangeur de chaleur - Google Patents
Echangeur de chaleur a assemblage mecanique et joint d’etancheite pour cet echangeur de chaleur Download PDFInfo
- Publication number
- WO2006024734A1 WO2006024734A1 PCT/FR2005/001884 FR2005001884W WO2006024734A1 WO 2006024734 A1 WO2006024734 A1 WO 2006024734A1 FR 2005001884 W FR2005001884 W FR 2005001884W WO 2006024734 A1 WO2006024734 A1 WO 2006024734A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- wall
- heat exchanger
- seal
- forms
- Prior art date
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
- F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, 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 invention relates to a heat exchanger, in particular for motor vehicles, and a seal that it comprises.
- It relates more particularly to a heat exchanger of the type comprising a multiplicity of tubes passing through fins and having ends inserted into holes of a header plate with the interposition of a compressible seal.
- Such heat exchangers are also referred to as "mechanically assembled heat exchangers" because the tubes are first flared in an upper part to the right of the joint to ensure the tightness of the connection of the tubes and the collector plate using seal and then flared at their end to achieve a retention of the tubes in the collector plate.
- Heat exchangers of this type are known in which a compressible seal forms flanges surrounding the ends of the tubes.
- the document FR 2 740 869 describes in particular a heat exchanger comprising a compressible seal ensuring sealing following the compression of its collars by a flaring of the tubes.
- Heat exchangers of this type are in particular used as cooling radiators of a combustion engine.
- seals forming flanges surrounding the ends of the tubes creates the need for the aforementioned sealing flare to provide a seal, which has the effect of lengthening the production cycle and driving adverse effects promoting corrosion as described above.
- the object of the invention is in particular to overcome the aforementioned drawbacks.
- a heat exchanger comprising a collector plate pierced with holes flanked by collars to receive tubes with interposition of a seal forming a sleeve on each tube, the sleeve having an inner wall and an outer wall and having an annular end which extends beyond the collar, which end of the sleeve comprises in a configuration before assembly a chosen thickness of shape, the extra thickness being arranged to support, in a configuration after assembly, the wall internal of the sleeve against the tube, by elastic return stress and in the region of the end.
- the extra thickness forms a projection on the outer wall of the sleeve in the configuration before assembly.
- the extra thickness forms a projection on the inner wall of the sleeve in the configuration before assembly.
- the end of the sleeve has an end face in the region of which the contact between the tube and the inner wall of the sleeve ends and a tangent to this end face forms an angle of flaring with the tube. , which flare angle is straight or obtuse.
- a seal having such an end avoids the infiltration of harmful elements of the operating environment of the heat exchanger.
- it when it is used as a cooling radiator of an engine of a motor vehicle, it prevents corrosion salts from infiltrating because the angle formed by the seal with the tube after assembly is such that there is no day in which possible corrosion salts could be housed to go up by capillary action.
- the end of the sleeve forms an annular edge having a trapezoidal section whose end face is the large base and the two sides respectively the surface of the inner wall and the surface of the outer wall in the region of the extra thickness .
- the flaring angle is obtuse and the end of the sleeve forms an annular edge having a quadrilateral-shaped section whose three sides are respectively the end face, the surface the
- the sleeves of the seal depend on a core arranged to be placed in contact with the collector plate.
- the introduction of grooves in the sleeve provides spaces that prevent capillarity.
- the invention also relates to a prestressed joint such as that used in the heat exchanger according to the invention.
- FIG. 1 is a partial schematic cross sectional view of a heat exchanger according to the invention, once assembled
- FIG. 2 is a sectional view of a sleeve of a prestressed joint used in a first embodiment of a heat exchanger according to the invention before assembly thereof;
- FIG. 3 is a schematic sectional view along the line III-III of Figure 2;
- FIG. 4 is a partial schematic sectional view of the sleeve of Figure 2, once it has received a tube, and before flaring thereof; 5 001884
- FIG. 5 is a sectional view of a variant of the sleeve of Figure 2.
- FIG. 6 shows another variant of the sleeve of Figure 2.
- FIG. 7 represents another variant of the sleeve of FIG.
- the heat exchanger 10 shown in Figure 1 comprises a beam formed of a plurality of tubes 12 of oval section which are arranged parallel to each other and in a single row.
- the tubes 12 pass through a multiplicity of fins 14 constituted by substantially rectangular metal plates parallel to each other.
- the heat exchanger 10 may in particular be a cooling radiator of a motor vehicle engine.
- Each tube 12 has a free end 16 mechanically assembled to a header plate 18 also called “collector” or “plate with holes”.
- the header plate 18 comprises a core 20 of generally rectangular shape delimiting a multiplicity of holes 22 of oval section, adapted to receive the ends 16 of the tubes. Each hole 22 is surrounded by a collar 24 directed towards the fins 14.
- the core 20 is extended by a peripheral channel 26 defining a groove and terminated by a peripheral rim 28 forming foldable legs.
- the header plate 18 receives a compressible seal 30 having a core 32 which is applied on the core 20 of the header plate 18.
- This core 32 is connected to a multiplicity of sleeves 34 which each have an axis XX.
- the sleeves 34 are each introduced into a hole 22 to ensure the sealing between the end 16 of a tube 12 and the collar 24 corresponding.
- the core 32 of the seal 30 forms at its periphery a bead 36 disposed in the channel 26 of the header plate 18 and adapted to ensure the sealing with a header (not shown) when the peripheral flange 28 is folded.
- the mechanical assembly of the tube 12 to the collector plate 18 is made by a flaring, said retaining, of an upper part of the tube, once its end 16 is received in a sleeve 34.
- the rest of the tube 12 is of constant section.
- Figure 2 shows a sectional view of a sleeve of a seal used in a preferred embodiment of a heat exchanger according to the invention, before assembly of the latter.
- the gasket is advantageously made of elastomeric material such as a natural or synthetic rubber.
- the sleeve 34 has an opening 40 intended to receive the tube 12, delimited by an inner wall 42, an outer wall 44 corresponding to the outer surface of the sleeve 34.
- the sleeve 34 has a generally oval shape characterized by a major axis ZZ and a small axis YY perpendicular to each other and to the axis XX.
- the sleeve 34 has an end 46 of generally annular shape.
- the end 46 has an outer thickness 48 on the outer wall 44 and an inner extra thickness 50 on the inner wall 42.
- the end 46 further comprises an end face 52 constituting the end of the sleeve 34.
- the end 46 thus forms an annular rim having a section of generally trapezoidal shape.
- the great base of this trapezium is formed by the end face 52.
- the two sides of the trapezium are constituted respectively by an outer edge 54 of the outer allowance 48 and an inner edge 56 of the excess thickness 50.
- the gasket 30 is firstly arranged on the header plate 18, so that the sleeves 34 penetrate the holes 22.
- the sleeves 34 are provided so that the end 46 extends beyond the collars 24 when the seal 30 is in place.
- each tube 12 is introduced into the opening of the sleeve 40 corresponding thereto.
- the tube 12 is held in place by means of a retaining flare of the tube 12, produced by applying a flaring tool commonly known as a "flare punch" at the end 16.
- Figure 4 shows a partial schematic sectional view of the heat exchanger 10 at a sleeve 34 after introduction of the tube 12 and before the realization of the retaining flare.
- the sleeve 34 penetrates the hole 22 and receives the tube 12 in the opening 40.
- the passage of the tubes 12 for their introduction into the sleeve 34 is facilitated by a punch whose diameter is the same as that of the tubes 12.
- the tube 12 has a diameter slightly greater than that of the opening 40, which urges the sleeve 34 against the tube 12.
- the fact that the tube 12 has a greater diameter than that of the opening 40 creates in the sleeve 34 a radial elastic stress directed towards the inside of the opening 40 represented by the arrows F.
- This constraint is standardized and intensified in the region of the end 46 by the outer allowance 48 which tends to increase locally the stiffness of the sleeve 34.
- the stress is further increased by the fact that the internal extra thickness 50 is compressed by the tube 12.
- the end face 52 is orthogonal to the axis XX which is also the axis of the tube 12 and therefore the angle ⁇ formed by a tangent A1 to the end face 52 with the axis XX is straight.
- the sleeve 34 is biased against the tube 12 and there can be no infiltration of elements of the operating environment of the heat exchanger by capillarity since any space between the sleeve 34 and the tube 12 is eliminated.
- FIG. 5 illustrates a variant of the sleeve of FIG. 2. For reasons of similarity and simplicity, only the different elements will be described and their references will be added of the number 100.
- a sleeve 134 has an end 146 of generally annular shape.
- the end 146 differs by its external overthickness 148 and internal 150.
- the section of the annular edge formed by the end 146 here has the shape of any quadrilateral.
- the end face 152 forms a first side, the edges 154 and 156 respectively of the outer allowance 148 and the inner allowance 150 forming two other sides of this quadrilateral. 5 001884
- a tangent ⁇ 2 at the end face 152 forms an obtuse angle ⁇ 2 with the axis XX. This has the advantage of making even less likely the rise of corrosion salts by capillarity once the tube 12 mounted in the opening 40.
- FIG. 6 represents another variant of the sleeve of FIG. 2.
- the internal wall 42 of the sleeve of FIG. 2 is hollowed out with grooves 200 at the level of the opening 40.
- the grooves 200 therefore have an oval shape like the sleeve 34 and they release spaces which slow down any possible capillary rise between the sleeve 34 and the tube 12.
- FIG. 7 represents another variant of the sleeve of FIG. 2.
- the inner wall 242 of the sleeve 234 has a constant profile inclined with respect to the axis XX.
- the internal extra thickness 250 is then formed by the portion of the inner wall 242 of the end 246 of the sleeve 234. It is possible to combine the various variants described above and to use for the joint any type of material that will appear appropriate to the skilled person.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05790857.6A EP1809970B1 (fr) | 2004-07-30 | 2005-07-21 | Echangeur de chaleur et joint d'etancheite pour cet echangeur de chaleur |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0408460 | 2004-07-30 | ||
FR0408460A FR2873800B1 (fr) | 2004-07-30 | 2004-07-30 | Echangeur de chaleur a assemblage mecanique et joint d'etancheite pour cet echangeur de chaleur |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006024734A1 true WO2006024734A1 (fr) | 2006-03-09 |
Family
ID=34949594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/001884 WO2006024734A1 (fr) | 2004-07-30 | 2005-07-21 | Echangeur de chaleur a assemblage mecanique et joint d’etancheite pour cet echangeur de chaleur |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1809970B1 (fr) |
CN (1) | CN100513981C (fr) |
FR (1) | FR2873800B1 (fr) |
WO (1) | WO2006024734A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2902511B1 (fr) * | 2006-06-19 | 2008-08-08 | Valeo Systemes Thermiques | Boite collectrice pour echangeur de chaleur et echangeur de chaleur comportant une telle boite collectrice |
ITUD20110191A1 (it) * | 2011-11-25 | 2013-05-26 | Bruno Pilosio | Scambiatore di calore ad alette perfezionato e procedimento di produzione |
FR3035489B1 (fr) * | 2015-04-27 | 2017-05-05 | Valeo Systemes Thermiques | Joint annulaire pour echangeur de chaleur de vehicule automobile |
CN106837516A (zh) * | 2017-04-10 | 2017-06-13 | 新乡市宏伟换热器有限公司 | 一种大型机械发动机冷却水箱 |
WO2019121692A1 (fr) * | 2017-12-20 | 2019-06-27 | Tetra Laval Holdings & Finance S.A. | Joint d'étanchéité et échangeur de chaleur tubulaire utilisant un tel joint d'étanchéité |
FR3082929B1 (fr) * | 2018-06-26 | 2020-07-03 | Valeo Systemes Thermiques | Boite collectrice et echangeur thermique correspondant |
DE102018219171A1 (de) * | 2018-06-29 | 2020-01-02 | Hanon Systems | Batteriekühler |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB2122928A (en) * | 1982-06-23 | 1984-01-25 | Valeo | Method of assembling at least one tube on a plate and equipment for performing this method |
FR2555921A1 (fr) * | 1983-12-01 | 1985-06-07 | Valeo | Procede de montage d'au moins un tube sur une plaque, element d'etancheite pour la mise en oeuvre de ce procede, et radiateurs, notamment pour vehicules automobiles, obtenus par ce procede, et autres applications |
FR2794852A1 (fr) * | 1999-06-08 | 2000-12-15 | Valeo Thermique Moteur Sa | Echangeur de chaleur comprenant une rangee de tubes traversant des trous d'une plaque collectrice |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19849574B8 (de) * | 1998-10-27 | 2010-02-11 | Valeo Klimatechnik Gmbh & Co. Kg | Rohrverbindung zwischen einem Sammler eines Kraftfahrzeugwärmetauschers und einer äußeren Rohrleitung für das innere Wärmetauschfluid |
-
2004
- 2004-07-30 FR FR0408460A patent/FR2873800B1/fr not_active Expired - Fee Related
-
2005
- 2005-07-21 WO PCT/FR2005/001884 patent/WO2006024734A1/fr active Application Filing
- 2005-07-21 CN CNB2005800291294A patent/CN100513981C/zh active Active
- 2005-07-21 EP EP05790857.6A patent/EP1809970B1/fr active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB2122928A (en) * | 1982-06-23 | 1984-01-25 | Valeo | Method of assembling at least one tube on a plate and equipment for performing this method |
FR2555921A1 (fr) * | 1983-12-01 | 1985-06-07 | Valeo | Procede de montage d'au moins un tube sur une plaque, element d'etancheite pour la mise en oeuvre de ce procede, et radiateurs, notamment pour vehicules automobiles, obtenus par ce procede, et autres applications |
FR2794852A1 (fr) * | 1999-06-08 | 2000-12-15 | Valeo Thermique Moteur Sa | Echangeur de chaleur comprenant une rangee de tubes traversant des trous d'une plaque collectrice |
Also Published As
Publication number | Publication date |
---|---|
EP1809970A1 (fr) | 2007-07-25 |
EP1809970B1 (fr) | 2017-07-19 |
CN101010554A (zh) | 2007-08-01 |
FR2873800B1 (fr) | 2006-11-24 |
FR2873800A1 (fr) | 2006-02-03 |
CN100513981C (zh) | 2009-07-15 |
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