EP3289304B1 - Ringförmige dichtung für kraftfahrzeugwärmetauscher - Google Patents

Ringförmige dichtung für kraftfahrzeugwärmetauscher Download PDF

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Publication number
EP3289304B1
EP3289304B1 EP16717657.7A EP16717657A EP3289304B1 EP 3289304 B1 EP3289304 B1 EP 3289304B1 EP 16717657 A EP16717657 A EP 16717657A EP 3289304 B1 EP3289304 B1 EP 3289304B1
Authority
EP
European Patent Office
Prior art keywords
support
seal
parts
annular
bead
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.)
Active
Application number
EP16717657.7A
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English (en)
French (fr)
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EP3289304A1 (de
Inventor
Christian Riondet
Jean-Marc Lesueur
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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.)
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Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP3289304A1 publication Critical patent/EP3289304A1/de
Application granted granted Critical
Publication of EP3289304B1 publication Critical patent/EP3289304B1/de
Active 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
    • 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
    • F28F9/0219—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
    • 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
    • F28D1/0535—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 the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the present invention relates to the field of seals.
  • the invention relates, in particular, to a seal as defined in the preamble of claim 1.
  • a seal is known from the document FR 2 927 411 A1 .
  • a motor vehicle heat exchanger generally comprises a header box whose header plate is connected to heat exchange tubes of a bundle of tubes.
  • the header plate is most often provided with a groove defined by two concentric annular edges in which is placed an annular seal.
  • the seal is configured to be stretched between two opposite supports, usually the ends of the end tubes of the tube bundle or the cheeks positioned at both ends of the bundle.
  • the seal finds a support, throat, tube or cheek, on both sides of the tube bundle.
  • This seal thus comprises two opposite bearing parts intended to cooperate with the supports, and two connecting parts interconnecting the support parts.
  • the seal generally comprises an annular bead extending in the bearing and connecting portions.
  • This annular bead of circular cross section, is intended to be deformed elastically radially by axial compression substantially perpendicular to a plane parallel to the annular shape of the seal.
  • the cross section of the bead is generally circular rather than oval.
  • the oval section is less stable because it tends to rotate undesirably locally, which can lead to sealing defects.
  • the material in which the seal is made (usually made of polymer) is deformable while being relatively incompressible.
  • the capacity of the bead to crash is therefore limited by the space devolved to it, in particular by the dimensions of the groove when the seal is placed there. If the space is not large enough, the joint can not, in some places, crash enough to compensate for them. This can result in leaks.
  • the purpose of the invention is therefore both to avoid these sealing defects and to limit the dimensions of the space devolved to the joint, in particular the dimensions of the groove for limit the size of the heat exchanger.
  • the seal comprising a bead whose cross section has a smaller radial dimension in the bearing portions, its radial space in the median plane after compression will be lower.
  • each bearing portion comprises a radial extension of the bead forming heel support on the corresponding support.
  • the support heel makes it possible to further improve the stability of the annular bead in the bearing parts.
  • the annular bead has a circular cross section in the connecting portions.
  • the annular bead has an oval cross section in the support portions.
  • the oval shape gives the bead space available for greater compression, while the circular shape gives the bead greater stability.
  • the cross section of the bead moves from the adjacent end of the adjacent connecting portion to the adjacent end of the bearing sub-portion.
  • the invention also relates to an exchanger comprising a header connected to heat exchange tubes and comprising a cover, a header plate and a seal, as previously described, interposed between the cover and the header plate.
  • the complementary member of the exchanger is a collector plate and comprises two grooves delimited by an annular outer edge common to the two grooves and two separate inner edges delimiting respectively the two grooves, the annular seal being disposed in the two throats.
  • the support associated with a bearing portion of the seal is formed by the outer contour of a first support tube of the heat exchanger, the bearing portion surrounding the first tube of the 'support.
  • each support part is in abutment against a secondary support formed by a second supporting tube adjacent to the first support tube, so that this support part comprises a reinforcement part. extending between the first and second support tubes.
  • the reinforcing portion prevents the bead material from flowing out of the support portions when the seal is stretched between the two supports. Indeed, the reinforcing part being in abutment against the second support tube, it exerts forces in response to the tension towards the support parts and makes it possible to oppose the creep of the material towards the connecting parts .
  • the header plate comprises a groove delimited by two substantially concentric annular edges, the annular seal being disposed in the groove.
  • the heat exchanger 1 comprises a header, or water box, connected to flat heat exchange tubes 2 parallel to each other.
  • This manifold includes a header plate 4 and a cover.
  • the collector plate 4 has a substantially rectangular shape.
  • the heat exchanger 1 comprises two joint paths 5 extending at the periphery of the header plate 4, delimited by an annular outer edge 6, of generally rectangular shape, common to the two paths 5. Inward, the paths 5 are delimited by the tubes 2.
  • An annular seal 10, according to a first embodiment of the invention, is disposed along the two paths 5, so as to be interposed between the foot 11 of the cover (partially shown on the Figures 3 to 5 ) of the manifold and the manifold plate 4. In the figures, the seal is shown before crushing by the lid.
  • the annular seal 10 is shown on the figure 1, 2 and 6 , stretched between the outer contours of two support tubes 12.
  • the support tubes 12 are those located at opposite ends of the tube bundle of the heat exchanger 1.
  • the annular seal 10 takes, in this extended position, a generally annular shape similar to that of the periphery of the header plate 4, and is therefore substantially rectangular.
  • the annular seal 10 comprises an annular bead 14 intended to be deformed elastically by axial compression substantially perpendicular to a plane parallel to the annular shape of the seal 10, in other words perpendicular to the plane of the plate collector 4.
  • the annular seal 10 comprises two opposite bearing parts 16 intended to cooperate each respectively with the support tubes 12, and two connecting parts 18 interconnecting the bearing parts 16.
  • each support portion 16 comprises a substantially rectilinear bearing sub-portion 20 and curved transition sub-portions 22 between the connecting portions 18 and the bearing sub-portion 20.
  • the cross section of the bead 14 between each bearing portion 16 and the connecting portions 18 to which it is connected evolves so that its dimension measured in a median plane of the seal 10 parallel to the annular shape of the seal 10, called the dimension radial, is lower in the bearing portion 16 than in the connecting portions 18.
  • the bead 14 requires a smaller space to expand under the effect of compression than in the connecting portions 18
  • the bead 14 therefore has room to extend, under the effect of compression, in the centrifugal direction indicated by the arrows C, considering the annular shape of the seal 10. This allows the seal 10 to achieve the seal between the collector plate 4 and the cover foot 11 of the collector box (see Figures 3 to 5 ).
  • the bead 14 remains stable in the bearing portions 16 because it is retained by the support tubes 7 and therefore has little tendency to rotate.
  • the cross section of the bead 1 evolves in the transition sub-portions 22.
  • the seal has a first section in the bearing sub-parts 20, a second section in the connecting portions 18 and in the transition parts, it has an evolutive section between the first section and the second section. More specifically, the seal has in section this second section in the areas outside the arrows A.
  • the cross section of the bead 14 corresponding to the second section is limited to the connecting portions 18, that is to say that the area along which the section is scalable is a little longer as shown by the arrow B extending here to the beginning of the connecting portions 18.
  • the bearing portion 16 bears against a secondary support formed by a second support tube 24, in such a way that this bearing part 16 comprises a reinforcing part 26 extending between the first support tube 7 and the second support tube 24.
  • the bead 14 has, as shown in FIG. figure 3 , a first section of oval shape.
  • This oval shape makes it possible, during the compression of the seal 10, to leave the bead 14 of the supporting sub-parts 20 with greater deformation space 27 than if it had been of circular section, as is the case with the bead. 14 in the connecting portions 18 and to a lesser extent transition sub-portions 22.
  • the seal 10 comprises a radial extension of the bead 14 forming a bearing heel 28 on the corresponding support tube 12.
  • each tube 2 passes through a collar 29 formed in the collecting plate 4.
  • the support heel 28 comes to bear on this collar 29 and, above the collar 29, directly on the tube 12.
  • the oval shape of the bead 14 also makes it possible to limit the space devolved to the joint function and to make it possible to devote part of the available space to the support heel.
  • the bead 14 has, as shown in FIG. figure 5 , a section of circular shape. Having no bearing heel in these parts 18, the seal has more deformation space 27 than in the sub-parts 20, although the total space devolved to the seal is greater in the subparts 20 than in the connecting portions 18. Therefore it is possible to have a circular section for the seal in the connecting portions 18.
  • the bead 14 has, as shown in FIG. figure 4 , an evolutionary section between the oval form and the circular form.
  • the bead 14 has a deformation space 27 also greater than in the bearing sub-parts 20 because the seal has no bearing heel.
  • the section of the seal in the connecting portions 18 may have another shape, in particular, it may be oval of an intermediate shape between the oval of the transition portions and the circular section.
  • the support heel is also present in the transition sub-parts 22.
  • the heat exchanger 1 comprises a peripheral groove 30 delimited by an inner annular edge 32 and an outer annular edge 34 substantially concentric.
  • the groove 30 extends over the entire contour of the header plate 4.
  • An annular seal 10 according to a third embodiment of the invention is disposed in the groove 30.
  • the annular seal 10 is similar to the seal according to the first or second embodiment, except for the presence of the reinforcing sub-portion 26.
  • the groove 30 extending over the entire contour of the collector plate 4 and having a generally annular shape, it makes it possible to limit the imbalances of material creep between the connecting portions 18 and support 16, during the compression of the joint 10.
  • the support of the annular seal is on the tube only. In another embodiment, the support of the annular seal is on the collar only.
  • the cross section of the annular bead changes from a square shape in the connecting portions to a rectangular shape in the support portions.

Landscapes

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

Claims (10)

  1. Ringdichtung für einen Wärmetauscher eines Kraftfahrzeugs, die dazu bestimmt ist, zwischen zwei gegenüberliegenden Auflagern (12) gespannt zu werden, die sie umgibt, die aufweist:
    - zwei gegenüberliegende Auflageteile (16), die dazu bestimmt sind, mit den zwei Auflagern (12) zusammenzuwirken,
    - zwei Verbindungsteile (18), die die Auflageteile (12) miteinander verbinden, und
    - einen Ringwulst (14), der dazu bestimmt ist, durch axialen Druck im Wesentlichen lotrecht zu einer Ebene parallel zur Ringform der Dichtung (10) elastisch verformt zu werden, wobei dieser Ringwulst (14) sich in den Auflage- (16) und Verbindungsteilen (18) erstreckt,
    dadurch gekennzeichnet, dass der Querschnitt des Wulsts (14) zwischen jedem Auflageteil (16) und den Verbindungsteilen (18), mit denen er verbunden ist, sich so entwickelt, dass seine Abmessung gemessen in einer Mittelebene der Dichtung (10) parallel zur Ringform der Dichtung (10), radiale Abmessung genannt, im Auflageteil (16) geringer ist als in den Verbindungsteilen (18).
  2. Ringdichtung nach Anspruch 1, wobei jeder Auflageteil (16) eine radiale Verlängerung des Wulsts (14) enthält, die einen Auflageansatz (28) auf dem entsprechenden Auflager (12) bildet.
  3. Ringdichtung nach einem der Ansprüche 1 oder 2, wobei der Ringwulst (14) in den Verbindungsteilen (18) einen kreisförmigen Querschnitt hat.
  4. Ringdichtung nach einem der Ansprüche 1 bis 3, wobei der Ringwulst (14) in den Auflageteilen (16) einen Querschnitt ovaler Form hat.
  5. Ringdichtung nach einem der Ansprüche 1 bis 4, wobei bei Betrachtung der zwischen den zwei Auflagern (12) gespannten Dichtung (10):
    - die Verbindungsteile (18) im Wesentlichen geradlinig sind,
    - jeder Auflageteil (16) ein im Wesentlichen gerades Auflageteilstück (20) und gekrümmte Übergangsteilstücke (22) zwischen den Verbindungsteilen (18) und dem Auflageteilstück (20) enthält, und
    - der Querschnitt des Wulsts (14) sich in den Übergangsteilstücken (22) entwickelt und in den Auflageteilstücken (20) konstant ist.
  6. Ringdichtung nach Anspruch 5, wobei in den Übergangsteilstücken (22) der Querschnitt des Wulsts (14) sich vom dem angrenzenden Verbindungsteil (18) benachbarten Ende bis zum dem Auflageteilstück (20) benachbarten Ende entwickelt.
  7. Tauscher, der einen an Wärmetauscherrohre (2) angeschlossenen und einen Deckel aufweisenden Sammelbehälter, eine Sammelplatte und eine Dichtung (10) enthält, die zwischen den Deckel und die Sammelplatte (4) eingefügt ist, dadurch gekennzeichnet, dass die Dichtung (10) gemäß einem der Ansprüche 1 bis 6 ist.
  8. Tauscher nach dem vorhergehenden Anspruch, wobei das einem Auflageteil (16) der Dichtung (10) zugeordnete Auflager vom Außenumriss eines ersten Auflagerohrs (12) des Wärmetauschers (1) gebildet wird, wobei der Auflageteil (16) dieses erste Auflagerohr (12) umgibt.
  9. Tauscher nach dem vorhergehenden Anspruch, wobei jeder Auflageteil (16) gegen ein sekundäres Auflager anliegt, das von einem dem ersten Auflagerohr (12) benachbarten zweiten Auflagerohr (24) gebildet wird, damit dieser Auflageteil (16) einen Verstärkungsteil (26) aufweist, der sich zwischen dem ersten (12) und dem zweiten (24) Auflagerohr erstreckt.
  10. Tauscher nach einem der Ansprüche 7 bis 9, wobei die Sammelplatte (4) eine von zwei ringförmigen Rändern (32, 34) begrenzte, im Wesentlichen konzentrische Rille (30) enthält, wobei die Ringdichtung (10) in der Rille (30) angeordnet ist.
EP16717657.7A 2015-04-27 2016-04-22 Ringförmige dichtung für kraftfahrzeugwärmetauscher Active EP3289304B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1553744A FR3035489B1 (fr) 2015-04-27 2015-04-27 Joint annulaire pour echangeur de chaleur de vehicule automobile
PCT/EP2016/058973 WO2016173934A1 (fr) 2015-04-27 2016-04-22 Joint annulaire pour échangeur de chaleur de véhicule automobile

Publications (2)

Publication Number Publication Date
EP3289304A1 EP3289304A1 (de) 2018-03-07
EP3289304B1 true EP3289304B1 (de) 2019-02-20

Family

ID=53484027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16717657.7A Active EP3289304B1 (de) 2015-04-27 2016-04-22 Ringförmige dichtung für kraftfahrzeugwärmetauscher

Country Status (7)

Country Link
US (1) US11137219B2 (de)
EP (1) EP3289304B1 (de)
JP (1) JP6571793B2 (de)
KR (1) KR102069753B1 (de)
CN (1) CN107820560B (de)
FR (1) FR3035489B1 (de)
WO (1) WO2016173934A1 (de)

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Also Published As

Publication number Publication date
WO2016173934A1 (fr) 2016-11-03
KR102069753B1 (ko) 2020-01-23
KR20170140339A (ko) 2017-12-20
US20180299212A1 (en) 2018-10-18
FR3035489A1 (fr) 2016-10-28
US11137219B2 (en) 2021-10-05
CN107820560A (zh) 2018-03-20
JP6571793B2 (ja) 2019-09-04
EP3289304A1 (de) 2018-03-07
CN107820560B (zh) 2019-09-13
FR3035489B1 (fr) 2017-05-05
WO2016173934A9 (fr) 2016-12-22
JP2018523059A (ja) 2018-08-16

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