Classifications

• • 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
  • 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
  • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2230/00—Sealing means

Definitions

• the field of the invention is that of radiators that can be implemented in motor vehicles, especially in heating, ventilation or air conditioning systems, commonly called HVAC systems for "Heat Ventilation Air Conditionning" in English, as well as that of such systems.
• HVAC systems Heating, ventilation or air conditioning systems
• Radiators are commonly used in motor vehicles for cooling or heating fluids. They can for example be integrated in an HVAC system or other.
• FIG. 1 illustrates in part a conventional radiator.
• a radiator 1 comprises two tanks 10, 11 arranged on two opposite sides of the radiator 1, and a body 12 comprising a plurality of tubes 120 opening on either side in the tanks 10, 11.
• the tubes 120 are spaced two by two in a preferentially regular pitch P.
• the space between the tubes 120 is conventionally filled by means of spacers 121 which optimize the flow of air through the body 12.
• Each tube is located between two spacers.
• the body begins with an interlayer and ends with a spacer.
• Each reservoir 10, 11 comprises a first end connected to a sleeve 13, and a second closed end.
• a fluid such as for example a heat-transfer liquid, can be circulated inside the radiator 1 by entering through one of the sleeves 13, by distributing itself in the corresponding reservoir 10, 11, flowing to the inside the tubes 120 to penetrate the other tank 10, 11 and then escaping from the radiator 1 through the corresponding sleeve 13.
• Such a radiator which comprises a large number of components, is complex to manufacture, heavy and expensive.
• Such a radiator can be implemented in an HVAC system such as that illustrated in Figure 2.
• An HVAC system 2 conventionally comprises a radiator 1 and a chamber 20 having an introduction passage 21 for inserting the radiator 1 into the chamber 20.
• the sleeves 13 make it possible to connect the radiator to a fluid circulation network comprising linked pipes 3 the sleeves 13 for example with collars 4, 5 joints being interposed between the pipes and the sleeves.
• the sealed chamber 20 at the introduction passage 21, an end seal 22 and a cover 23 are implemented.
• the seal 22 is deposited at the end of the radiator 1 on the surface of the insertion passage 21, then the cover 23 is attached to the seal 22 and secured to the chamber 20 by means of screws 6. The seal 22 is then compressed between the cover 23, the end of the radiator 1 and the edge of the chamber 20.
• This solution makes it possible to provide a fairly effective seal between the introduction passage 21 and the radiator 1 so as to obtain a sealed chamber 20 after introduction of the radiator 1.
• the end of the radiator 1 facing the introduction passage 21 when the radiator is housed in the chamber generally has a relatively complex shape.
• This complex shape is particularly related to the presence of the sleeves and the connection between each reservoir 10, 11 and the body 12 of the radiator 1 which is generally obtained by crimping generating non-uniform contours with irregularities in shape.
• the installation of the radiator 1 inside the chamber 20 is long enough insofar as it first assumes the introduction of the radiator 1 into the chamber 20, secondly the establishment of the seal 22 and finally closing the chamber 20 by means of the cover 23 which must be secured to it for example by means of screws 6.
• the invention particularly aims to provide an effective solution to at least some of these different problems.
• an object of the invention is to provide a technical solution for simplifying the architecture of a radiator.
• the object of the invention is, according to at least one embodiment, to provide such a solution that is simple in design and / or simple to manufacture.
• an objective of the invention is, according to at least one embodiment, to provide such a technique that makes it possible to reduce the number of components used in the manufacture of a radiator and / or to reduce the cost and / or the weight.
• the invention also pursues the objective, according to at least one embodiment, of providing a technical solution for optimizing the performance of the sealing function between the radiator and the chamber of an HVAC system.
• the purpose of the invention is, according to at least one embodiment, to provide such a technique that makes it possible to simplify, while improving, the seal between the radiator and the chamber of an HVAC system.
• the invention provides a radiator comprising a body and two reservoirs arranged on two opposite sides of said body, said body comprising a plurality of tubes opening at each of their ends in one of said reservoirs, said body comprising at a first end thereof an end plate extending substantially between said reservoirs.
• said end plate has a substantially U-shaped section with a bottom extended by two lateral wings, said bottom extending at least partly in contact with the first of said tubes located at said first end of said body, each tube being disposed between two spacers apart from said first tube, no spacer being interposed between said bottom of said end plate and said first tube, said wings extending from said bottom towards the outside of said body.
• the invention consists in placing at the end of the body of a radiator a U-shaped end plate oriented not towards the body of the body. radiator but outwardly thereof, the bottom of this plate being in contact at least in part with the first tube of the body without an insert is interposed between the bottom and the first tube.
• the removal of the spacer located at the first end of the body reduces the number of parts used in the composition of the radiator, and thus to simplify the architecture and manufacturing.
• the technique according to the invention makes it possible to reduce the cost and the weight of a radiator without impairing its efficiency.
• the free ends of said flanges extend substantially up to the level of the end of said tanks.
• the width of said end plate, in a plane transverse to said tubes and in a direction parallel to said tubes, is greater than or equal to the thickness of said body and less than the width of said tanks.
• the length of said tanks beyond the first of said tubes located at said first end of said body is substantially less than or equal to the pitch of said tubes.
• the overall thickness of said end plate is substantially equal to said length.
• said bottom of said end plate has irregularities such that said bottom is occasionally in contact with said first tube.
• said irregularities preferably extend along essentially longitudinal axes to said tubes.
• the wall of each tank has a thickness e, the distance d on either side of the radiator between the edge of each tank and said body being less than twice the thickness e.
• said distance d is preferably less than or equal to 1 millimeter.
• each tank comprises a bowl portion having a substantially U-shaped section with a bottom wall and two side walls and a lid portion having a substantially U-shaped section a bottom wall and two side walls, the side walls.
• said bowl portion having protruding abutments within said bowl portion remote from the bottom thereof, said side walls of said lid portion being in abutment with said stops.
• a radiator according to the invention comprises a seal extending at the periphery of said radiator on said wings by encircling said tanks.
• the invention also covers a heating, ventilation or air conditioning system comprising a radiator according to the variant described above and a sealed chamber provided with a passage for introducing said radiator, said radiator being housed in said chamber, said seal ensuring the sealing between the contour of said radiator and said introduction passage.
• FIG. 1 illustrates a radiator according to the prior art
• FIG. 2 illustrates an HVAC system according to the prior art
• FIG. 3 illustrates an exemplary radiator according to the invention in perspective
• FIGS. 4 and 5 illustrate exploded views of the tanks of a radiator according to the invention
• Figures 6, 7, 8 and 9 respectively illustrate perspective views of a spacer, a tube, a spacer portion, and an end plate of a radiator according to the invention
• FIG. 10 illustrates an example of an HVAC system according to the invention, the radiator of which is partially inside the chamber;
• Figure 11 illustrates a perspective view of the first end of a radiator according to the invention, which is intended to be at the introduction passage when the radiator is in the chamber of an HVAC system;
• Figure 12 illustrates a perspective view of the radiator of Figure 11 bearing a seal;
• Figure 13 illustrates a partial sectional view along a longitudinal plane to the tubes of the first end of a radiator according to the invention
• Figure 14 illustrates a cross-sectional view of an end plate whose bottom has irregularities
• FIG. 15 illustrates a partial view in perspective and in section along a plane transverse to the tubes of the first end of a radiator according to the invention
• - Figure 16 illustrates a partial sectional view along a plane transverse to the tubes of the first end of a radiator according to the invention
• FIG. 17 illustrates a partial view in section along a plane parallel to the tubes of a radiator according to the invention.
• the invention proposes to simplify the architecture of a radiator.
• the invention proposes placing at the end of the radiator body a U-shaped end plate oriented not towards the body of the radiator but towards the outside thereof, the bottom of the radiator. this plate extending at least partly in contact with the first tube of the body, no spacer being interposed between the bottom of the end plate and the first tube.
• such a radiator 1 comprises a body 12 and two reservoirs 10, 11 located at two opposite ends of the body 12.
• the body 12 comprises a plurality of hollow tubes 120 which open on either side into the tanks 10, 11, i.e. each end of a tube opens into one of the tanks.
• the connection between the tubes and the tanks is tight.
• Each reservoir 10, 11 is connected at one end to a sleeve 13, the other of its ends being closed by means of an end plate 110.
• Each sleeve 13 is connected to the end of the tank 10, 11 corresponding by means of a spacer 111 which is housed:
• the end plate 110 is housed in a peripheral groove (not shown) formed in the reservoir.
• the sleeves 13 are located on a first side of the body 12 while the clogged ends are located at the opposite end of the body 12.
• the sleeves are at the end of the radiator located near the introduction passage when the radiator is in the room.
• the sleeves can be angled or straight.
• Each tank 10, 11 comprises a collector 112, having a substantially U-shaped section, closed by a cover 113.
• the manifold 112 has a substantially U-shaped cross section with a bottom wall 1120 and two side walls 1121. Each side wall 1121 includes abutments 1123 projecting into the manifold 112 away from the bottom wall 1120. A plurality 1123 is provided along the entire collector 112. The bottom wall 1120 is traversed by introduction passages 1122 of the tubes 120.
• the cover 113 has a substantially U-shaped section with a bottom wall 1130 and two side walls 1131.
• the outer width of the cover 113 is slightly smaller than the inside width of the collector 112. The cover 113 can thus be inserted into the collector 112.
• the side walls 1131 of the cover 113 then bear against the stops 1123.
• the connection between the bottom wall 1130 and the side walls 1131 will preferably be rounded.
• the tubes 120 may be arranged so that their edge 1200 extends against, or at least close to, the inner surface. side walls 1121 of the collector 112.
• the distance d on either side of the radiator between the edge (side walls 1121) of each tank and the body (edge 1200 of the tubes 120) is less than twice the thickness e of the walls of the collector 112.
• the thickness e of the tank wall which will advantageously be between 0.8 and
• This distance d is preferably less than or equal to 1 millimeter.
• the junction between the tanks 10, 11, their collector and their cover, the end plates 110, the spacers 111, the corresponding sleeves 13 and the tubes 120 is sealed. It is obtained by soldering, all the components of the radiator being made of metal, for example aluminum alloy, clad (coated with filler metal) and assembled to each other before being placed in a furnace. brazing for final joining and sealing.
• each tank 10, 11 is essentially rectangular or square with substantially regular contours, smooth, that is to say without extra thickness. Angles may be rounded.
• the tubes 120 are spaced two by two from a substantially constant distance defining the pitch P of the tubes 120.
• the tube located at the first end of the body is hereinafter referred to as the first tube 120, whereas the tube located at the other end end is called last tube 120 d .
• Each space located between two consecutive tubes 120 is conventionally filled by means of an insert 121.
• Each tube, including the last 120 2 and except the first 120 ⁇ is between two spacers 121.
• Each spacer 121 comprises a folded zigzag sheet, i.e. having a plurality of convolutions, a convolution 121 'is shown in FIG. 8. They thus comprise a plurality of wings 1211, 1212 traversed by perforations.
• the height H of an interlayer is preferably between 5 and 6 millimeters, and advantageously equal to 5.4 or 5.8 millimeters.
• the end of the radiator 1, intended to be at the insertion passage 21 of the chamber 20, also called the first end, comprises an end plate 123.
• This end plate 123 has a U-shaped section. and includes a bottom 1231 and two side wings 1232. The wings are essentially perpendicular to the bottom.
• This end plate 123 extends between the two tanks 10, 11 preferably until they come into abutment against them.
• the bottom 1231 extends at least partly in contact with the first tube 12 . located at the first end of the body 12 and the wings 1232 extending from the bottom 1231 towards the outside of the body 12.
• the bottom 1231 of the end plate 123 is preferably totally in contact with the first tube 120 . .
• the bottom 1231 of the end plate 123 has irregularities 1233 so that the bottom 1231 is only occasionally in contact with the first tube 120i. It can for example be bosses, grooves or other. This reduces the thermal conductivity between the first tube and the end plate.
• the irregularities 1233 preferably extend along substantially longitudinal axes to the tubes 120.
• No spacer 121 is interposed between the bottom 1231 of the end plate 123 and the first tube 120i.
• the invention makes it possible to eliminate the interlayer placed before the first tube according to the prior art. This reduces the number of components of the radiator, its weight and cost.
• the width A of the end plate 123, in a plane transverse to the tubes 120 and in a direction parallel to the tubes 120, is greater than or equal to the thickness of the B body 12 and less than the width C of the tanks 10, 11 in the same plane and in the same direction.
• the thickness B of the body corresponds to those of the tubes and spacers which are substantially identical.
• the width A of the end plate 207 will preferably be equal to the thickness B of the body (or beam).
• the thickness of the material of the plate which will advantageously be between 0.4 and 0.8 millimeters and preferably equal to 0.5 millimeters.
• the thickness B of the body will preferably be between 20 and 30 millimeters and advantageously equal to 21 or 27 millimeters.
• the width C of the tanks will preferably be equal to the thickness B of the body increased by twice the thickness e of the wall of the tank which will advantageously be between 0.8 and 1 millimeters, further increased by twice the distance f between the nose of the tubes and the inner wall of the collector, this distance being preferably between 0 and 0.6 millimeters.
• the pitch P of the tubes that is to say the spacing between two consecutive tubes, will preferably be between 6 and 8 millimeters and advantageously equal to 7 or 6.6 millimeters.
• the general thickness E of the end plate 123 is substantially equal to this length L.
• the length of the tanks is thus substantially equal to that of the body.
• the end plate 123 is preferably made of aluminum alloy and welded directly to the first tube 12O ! by brazing. It may be secured by other means, such as by gluing or other and be made of another suitable material.
• the radiator 1 comprises a gasket 14 disposed around the radiator 1.
• this gasket makes it possible to ensure the seal between the radiator 1 contour and the introduction passage. 21 when the radiator 1 is housed inside the chamber 20.
• This seal 14 is located at the first end of the radiator 1, that is to say that which is intended to be at the introduction passage 21 when the radiator 1 is housed inside the room 20.
• the seal 14 extends around the radiator 1 by encircling the tanks 10, 11. In other words, it extends all along the periphery of the radiator. It also extends around the end plate 123, i.e. along the edges of the end plate 123, here on the wings 1232 thereof. The wings of the end plate and form with the tanks a seat for the joint.
• the peripheral contour of the radiator 1 has a substantially regular and flat surface free of irregularity, extra thickness, boss or recess unlike the radiators of the prior art have crimping connections tanks.
• a substantially continuous bearing surface is thus formed to receive the seal. This makes it possible to improve the sealing function between the radiator and the chamber insofar as the gasket 14 is compressed between essentially square surfaces (that of the outer peripheral contour of the radiator 1 and that of the inner peripheral contour of the insertion passage 21). .
• the seal 14 has a generally rectangular shape substantially complementary to the peripheral contour of the radiator 1. It preferably has a substantially rectangular section.
• the seal 14 is preferably secured to the radiator by gluing.
• it may include a bead of adhesive on its face intended to come into contact with the peripheral contour of the radiator 1. Before placing the seal, this cord will be covered with a removable protective film.
• the seal is made for example in a polyurethane foam. Alternatively, it may be made of any other suitable material.
• the dimensions of the joint 14 as well as its rigidity will be chosen so that it is compressed between the outer peripheral contour of the radiator 1 and the internal peripheral contour of the introduction passage 21 and wife shape on both sides when the radiator 1 is housed inside the chamber 20.
• the seal 14 thus ensures the filling of the sealing function between the radiator 1 and the chamber 20 when the radiator 1 is housed in the chamber 20.
• the chamber 20 is then in sealed airtight enclosure, particularly in air.
• Maintaining the radiator 1 inside the chamber is preferably provided by means of a clipping system comprising for example elastic tabs secured to the housing. This avoids the accidental extraction of the radiator outside the housing.
• the seal 14 may or may not be preformed. If it is preformed, it will be a little more rigid so that its peripheral contour will have the shape of that of the radiator 1 so that its implementation on the radiator 1 will not require him to marry the shape. If it is not preformed, its placement around the radiator will require more dexterity on the part of the operator.
• the gasket 14 is preferably pre-assembled on the radiator 1.
• the radiator 1 and the gasket 14 then form a removable monobloc assembly that can be inserted into the chamber or extracted from it in a block.
• the implementation of the U-shaped end plate at least partly in contact with the first tube, without the interposition of a spacer between the plate and the first tube and oriented towards the outside of the body makes it possible to reduce the number of components of the radiator, and so reduce its weight and cost.
• peripheral seal makes it possible, in the case of an HVAC system application, to optimize the sealing function between the radiator and the chamber simply, efficiently and at a lower cost.

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• 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)
• Air-Conditioning For Vehicles (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=58739193

Family Applications (1)

Country Status (4)

Citations (7)

Family Cites Families (1)

• 2017
  • 2017-03-17 FR FR1752214A patent/FR3064054B1/fr active Active
• 2018
  • 2018-03-19 EP EP18714590.9A patent/EP3568658B1/fr active Active
  • 2018-03-19 CN CN201880018610.0A patent/CN110431372B/zh active Active
  • 2018-03-19 WO PCT/FR2018/050663 patent/WO2018167446A1/fr unknown

Patent Citations (7)

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