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
  • F28F9/0229—Double end plates; Single end plates with hollow spaces
• • 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
• • 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
• • 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
  • 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
  • F28D2021/0082—Charged air coolers
• • 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
• • 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
  • F28D2021/0091—Radiators
  • F28D2021/0094—Radiators for recooling the engine coolant
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2225/00—Reinforcing means
  • F28F2225/08—Reinforcing means for 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
  • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
  • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Definitions

• Collector plate for a heat exchanger, collector box and heat exchanger
• the present invention relates to a manifold plate (also called collector) of a motor vehicle heat exchanger, for example for engine cooling radiator, for air conditioning condenser, for charge air cooler, and a manifold and a heat exchanger.
• a manifold plate also called collector
• a motor vehicle heat exchanger for example for engine cooling radiator, for air conditioning condenser, for charge air cooler, and a manifold and a heat exchanger.
• Document JP2005 / 308366 already discloses a collecting plate for a heat exchanger comprising a wall provided with orifices intended to be traversed by tubes arranged in a row in a longitudinal direction. This plate has a central receiving portion of the tubes which is bent inwards or outwards.
• the curvature of the collector plates is intended to avoid as much as possible the deterioration of the heat exchanger caused by the local thermal differences which strongly constrain the tube and solicit the junction between the collector plate and the tubes, in particular on the external rays of the tube.
• This junction can be materialized by a joint or by brazing or a direct weld between the tube and the plate. In the long run, the junction may end up no longer being sealed, which puts the exchanger out of order. A high pressure of circulation of the fluid inside the exchanger is of course an aggravating factor of this phenomenon.
• the object of the invention is to provide a solution that overcomes these disadvantages, in particular by reducing the stresses that apply to the tube.
• the invention firstly relates to a header plate for a heat exchanger, comprising a wall provided with orifices, intended to be traversed by tubes arranged in a row in a longitudinal direction, characterized in that:
• said wall has, in cross section, a profile consisting of a central portion and two lateral portions,
• the lateral portions generally follow a first curve of a first radius of curvature
• the central portion globally follows a second curve of a second radius of curvature, smaller than the first radius of curvature.
• "smaller than” means representing less than 80% of the reference value.
• the second radius of curvature must be less than 80% of the first radius of curvature.
• At least one of the orifices has, in a direction perpendicular to the longitudinal and transverse directions, an oblong projection of major axis TW, (also called “width of the passage opening of the tube in the manifold") and, with respect to a plane passing through longitudinal edges of the wall, the height of the lateral portions is H1 and the height of the central portion is H2, and the ratio between the heights H1, H2 and the major axis TW respects the inequalities following:
• the major axis (TW) of a tube is between 10 mm and 100 mm.
• At least one of the orifices comprises a collar intended to cover a portion of the wall of the tube passing through the wall through this orifice, this collar protruding outwardly of the manifold.
• a collar has the function of improving the seal between the tube and the collector plate.
• the collar comprises a groove for receiving a seal interposed between said collar and the tube.
• the orifices are spaced apart by a pitch of between 5 mm and 10 mm, preferably between 6 mm and 8 mm.
• the header plate is formed in a sheet of thickness between 0.7 mm and 2 mm, preferably between 1 mm and 1.5 mm.
• the invention also relates to a manifold comprising a collector plate as described above and a cover of plastic or metal, connected to the collector plate by crimping, gluing, brazing or welding.
• the invention also relates to a heat exchanger comprising such a manifold and tubes.
• the tubes are formed in a sheet of thickness between 0.1 mm and 0.5 mm, preferably between 0.2 mm and 0.3 mm.
• the tubes are obtained electro-welding, folding in several channels or stapling.
• Figure 1 is a perspective view in partial cross section of a header plate and a tube according to a first embodiment of the invention.
• Figure 2 is a view similar to that of Figure 1 according to a second embodiment of the invention.
• Figure 3 is a view similar to that of Figure 1 according to a third embodiment of the invention.
• Figure 4 is a view similar to that of Figure 1 according to a fourth embodiment of the invention.
• Figure 1 shows the upper part of a tube 1 of oblong section.
• the tube 1 is shown here in a vertical orientation.
• the reference at its upper end is relative to the vertical direction V in the figure.
• the oblong section of the tube has the following dimensions:
• small axis TT 1.4 mm (between 1 and 4 mm, preferably between 1 and 2 mm)
• the tube is formed in a sheet of thickness 0.3 mm, by electro-welding, folding or stapling.
• a collector plate 3, designated plate in the following, is traversed by the tube 1.
• this plate 3 Because of the partial section shown in the figure, only one section of this plate 3 is seen. This same section is repeated in the longitudinal direction L of the plate, as many times as the plate receives tubes, which are arranged in a row parallel to each other, along the same longitudinal direction L.
• the spacing pitch between two adjacent tubes is between 5 and 10 mm, preferably between 6 and 8 mm.
• the direction T is defined which is perpendicular to the direction L, generally in the plane of extension of the plate.
• the direction T is that in which the long lengths of the ends of the tubes extend.
• the plate 3 is formed in an aluminum sheet having a thickness of between 0.7 and 2 mm, preferably between 1 and 1.5 mm, by stamping.
• the plate 3 comprises a wall 5 provided with orifices (only one of which 7 is visible in the figure, as explained above), bordered by two longitudinal returns 9 which serve to connect the header plate 5 with a lid (not shown).
• the lid closes the volume located above the header plate 5 to form a header.
• the connection between the header plate 5 and the cover is effected by any appropriate means, in particular according to the material constituting the cover. For example, if the lid is plastic, the connection can be made by crimping or gluing. Similarly, if the lid is metal, the connection can be made by crimping, gluing, brazing or welding.
• a seal may, but is not mandatory, be interposed between the outer wall of the tube, a lid (not shown), the flange 9 and the collector plate.
• the collector plate is folded forming two edges or spokes 11.
• the wall 5 provided with orifices has, in cross section, a profile consisting of a central portion 13 and two lateral portions 15.
• the lateral portions 15 generally follow a curve 17 of a first radius of curvature R1.
• the central portion generally follows a curve 19 of a second radius of curvature R2, smaller than the first radius of curvature R1.
• the two portions, central 13 and lateral 15, form a bump towards the outside of the exchanger, so downwards in the figure.
• the radii of curvature R1 and R2 can be defined by measuring the heights of the curves with respect to the plane defined by the two edges 11:
• H1 designates the height of the side portions 15 and H2 the height of the central portion 13.
• the radii R1 and R2 derive geometrically from these values H1, H2 and the width 1 of the plate in the transverse direction.
• the ratio between the heights H1, H2 and the major axis TW respects the following inequalities:
• the orifice 7 has, in the vertical direction V of the drawing, which is a direction perpendicular to the longitudinal L and transverse T directions of the plate, an oblong projection of major axis TW, which is also more simply denoted by width TW.
• the orifice 7 comprises a collar 21 intended to cover a portion of the wall of the tube 1 passing through the wall 5 through this orifice 7, this collar 21 projecting towards the outside of the manifold, (thus downward on the figure).
• the collar 21 is obtained by stamping, during the forming of the plate 3.
• the material is repelled by a punch during stamping, as for the rest of the plate 3, which makes the operation easier. stamping.
• a disadvantage of this arrangement is that the tube 1 is less easy to insert into the orifice 7 during assembly of the manifold, because the end of the collar 21 through which the tube 1 is to be inserted is a little narrower.
• this arrangement is advantageous in that it further reduces the stresses applied to the tube 1. It is therefore more favorable to the longevity of the exchanger.
• the plate 3 may comprise a groove (not shown) to receive a seal (not shown) interposed between a cover (not shown) and the plate 3.
• FIG. 3 differs from the previous in that the central portion 13 'of the profile forms a bump inwardly of the exchanger, that is to say upwards in the figure.
• the other indications given with reference to FIGS. 1 and 2 are valid for this FIG.
• the collar 21 has the advantage that it facilitates assembly of the exchanger because the tubes are easier to insert into the holes than in the embodiment of FIG.
• This embodiment is also advantageous as regards the reduction of stresses exerted on the tube 1.
• header plate 3 differs from the previous in that the header plate 3 'comprises a groove 23 in which a seal (not shown) can be inserted to seal with a lid (not shown).

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)
• Details Of Heat-Exchange And Heat-Transfer (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=52130401

Family Applications (1)

Country Status (9)

Families Citing this family (9)

Family Cites Families (11)

• 2014
  • 2014-09-24 FR FR1459041A patent/FR3026170A1/fr not_active Ceased
• 2015
  • 2015-09-23 EP EP15766888.0A patent/EP3198212B1/de active Active
  • 2015-09-23 US US15/513,741 patent/US10168109B2/en not_active Expired - Fee Related
  • 2015-09-23 CN CN201580058067.3A patent/CN107110619A/zh active Pending
  • 2015-09-23 MX MX2017003849A patent/MX2017003849A/es unknown
  • 2015-09-23 JP JP2017516131A patent/JP2017531149A/ja active Pending
  • 2015-09-23 KR KR1020177010885A patent/KR20170057420A/ko not_active Ceased
  • 2015-09-23 BR BR112017005949A patent/BR112017005949A2/pt not_active Application Discontinuation
  • 2015-09-23 WO PCT/EP2015/071921 patent/WO2016046290A1/fr not_active Ceased

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