EP0219419A1 - Dispositif de boîte à eau de vase d'expansion, et échangeur de chaleur comprenant ce dispositif - Google Patents

Dispositif de boîte à eau de vase d'expansion, et échangeur de chaleur comprenant ce dispositif Download PDF

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Publication number
EP0219419A1
EP0219419A1 EP86402178A EP86402178A EP0219419A1 EP 0219419 A1 EP0219419 A1 EP 0219419A1 EP 86402178 A EP86402178 A EP 86402178A EP 86402178 A EP86402178 A EP 86402178A EP 0219419 A1 EP0219419 A1 EP 0219419A1
Authority
EP
European Patent Office
Prior art keywords
water box
expansion tank
tube
liquid
bundle
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Withdrawn
Application number
EP86402178A
Other languages
German (de)
English (en)
French (fr)
Inventor
Marco Valier
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 SE
Original Assignee
Valeo SE
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.)
Filing date
Publication date
Application filed by Valeo SE filed Critical Valeo SE
Publication of EP0219419A1 publication Critical patent/EP0219419A1/fr
Withdrawn legal-status Critical Current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
    • F28F9/0231—Header boxes having an expansion chamber

Definitions

  • the invention relates essentially to a water box and expansion tank device for a heat exchanger, such as for example a radiator of a cooling circuit of an internal combustion engine of a motor vehicle, as well as an exchanger heat including this device.
  • a heat exchanger such as for example a radiator of a cooling circuit of an internal combustion engine of a motor vehicle, as well as an exchanger heat including this device.
  • the expansion tank molded with the water box extends along this water box.
  • the heat exchanger is of the type with horizontal circulation of liquid, that is to say when it comprises a bundle of horizontal tubes at the ends of which are mounted vertical water boxes
  • the expansion tank which extends along the water box, in the plane of the exchanger increases by its presence the dimension and therefore the horizontal size of the exchanger.
  • the architecture of the vehicle or of the engine compartment of this vehicle does not allow this arrangement for reasons of space, and we then use a radiator with an independent expansion tank, this tank being mounted at a another place in the engine compartment and connected to the radiator by flexible pipes.
  • the object of the invention is in particular to avoid this drawback, by means of a heat exchanger comprising a molded expansion tank, forming a block with one of the water boxes of the exchanger and in which the presence of the vase expansion does not significantly increase the horizontal size of the exchanger.
  • the invention provides a device for a water box and an expansion tank for a heat exchanger, such as a radiator of a cooling circuit of an internal combustion engine, this device being in one piece, characterized in that that, the water box being generally vertical, the expansion tank is provided at the upper end of the water box and extends horizontally beyond it.
  • the expansion tank will be located, not on the vertical side of the water box, but above it, which reduces the horizontal size of the exchanger.
  • the expansion vessel extends perpendicular to the open mounting face of the water box on one end of the bundle of tubes of the exchanger.
  • the expansion vessel will extend above the tube bundle, over part of its length.
  • the invention provides that the expansion vessel comprises, on its underside, a fixing lug on the bundle of tubes of the exchanger.
  • the arrangement of the expansion tank above the water box also allows excellent degassing of the liquid circulating in the heat exchanger, without the need to use an attached tubing used until now in the prior art and the mounting of which complicates the assembly of the exchanger and increases its cost.
  • the water box of the device comprises, for example, molding, a liquid intake pipe which has a common wall with the expansion tank, the degassing passage then being constituted by an orifice formed in this wall. .
  • this orifice can be extended upwards by a tube coming from molding with the expansion tank, which ensures better degassing of the liquid, in particular when a part of the cylinder head of the engine is at a level higher than that from the upper end of the water box.
  • FIGS. 1 to 3 represent a heat exchanger, in particular a radiator for a cooling circuit of a motor vehicle engine, which comprises a device of water box and of expansion tank according to l 'invention.
  • the radiator shown in these figures essentially comprises a bundle of tubes 10, in which the liquid circulation tubes are arranged in one or more rows of parallel horizontal tubes, a water box 12 of a conventional type mounted at one end of the bundle , and a device 14 for water box and expansion tank according to the invention, which is a single piece molded in one piece and which comprises a water box 16 and an expansion tank 18.
  • the water boxes 12 and 16 are mounted in the usual way on the ends of the bundle of tubes 10, by means of collectors 20 which are plates comprising holes in which the ends of the tubes are mounted as a seal, as is well known in the art.
  • the water box 16 comprises, by molding, a central partition 22 which divides its internal space into two compartments separated in a sealed manner from each other when the water box 16 is mounted on the tube bundle 10, the upper compartment 24 being connected to a coolant circuit by a pipe 26 for admitting liquid into the exchanger, and the lower compartment 28 being connected to this circuit by a pipe 30 for the liquid outlet from the exchanger.
  • the liquid intake pipe 26 extends partly above the water box 16 of the tube bundle 10 and comes from molding with the water box 16 and with the lower part 32 of the expansion tank 18, which is of substantially semi-cylindrical shape and which is tangent to the upper part of the intake manifold 26 having with this manifold a common wall in which is formed an orifice 34 for communication between the expansion vessel 18 and the manifold 26, this orifice 34 playing the role of degassing passage for the liquid which is brought into the exchanger by the pipe 26.
  • the lower part 32 of the expansion vessel 18 extends horizontally, that is to say perpendicular to the general direction of the water box 16, and perpendicular to the open face of the water box 16 by which this box can be mounted on the end of the bundle of tubes 10.
  • the expansion vessel 18 extends horizontally, above the water box 24 and above part of the bundle of tubes 10 , as shown in FIG. 1.
  • the end of the lower part 32 of the expansion tank, which is opposite to the intake manifold 26, comprises, by molding, a U-shaped bracket 36 for fixing, for example by clipping or installation, on the horizontal upper edge of the tube bundle 10.
  • this fixing lug may be flat and is then fixed by suitable means, for example screws, to a cross member crimped on the upper horizontal edge of the bundle of tubes.
  • the lower part 32 of the expansion vessel 18 has an open upper face, for example horizontal, which is closed by sealing by an insert 38, for example also substantially semi-cylindrical, comprising a clean filling orifice or end piece 40 be closed by a plug 42 of the usual type and comprising for example overpressure and vacuum valves.
  • the lower part 32 of the expansion vessel is also formed, by molding, with a tube 44 which extends along the water box 16 up to the liquid outlet pipe 30 and which forms a return conduit from liquid between the expansion tank 18 and the tubing 30 or possibly the lower end of the water box 16.
  • a level detector 46 of a conventional type, as shown in FIGS. 1 and 3.
  • the tube 44 is also connected to the upper end of the compartment 28 of the water box 16, immediately below the middle partition wall 22, by a small conduit 48 coming from molding, which makes it possible to perfect the degassing of the liquid, the air or gas bubbles collected under the central partition 22 at the top of the compartment 28 which can escape through the conduit 48 and come to the free surface of the liquid contained in the expansion tank 18.
  • the water boxes 12 and 16, the part 38 forming the upper part of the expansion tank 18 and possibly the lower part 32 of the expansion tank may comprise, by molding, lugs or pins for fixing the exchanger in the engine compartment of a motor vehicle, as shown in 50, 52, 54 and 56 respectively.
  • the coolant of the motor vehicle engine enters the upper compartment 24 of the water box 16 through the tubing 26, circulates in the tubes of the upper half of the bundle 10 to reach the water box 12, then circulates , in the opposite direction, in the tubes of the lower half of the bundle 10 to reach the lower compartment 28 of the water box and leaves the exchanger by the tube 30.
  • the air or gas bubbles conveyed by the liquid are drawn into the expansion tank 18, on the one hand, through the orifice 34 for communication with the intake manifold 26 and, on the other hand, through the conduit 48 and the tube 44.
  • the formation of the molding tube 58 with the lower part 32 of the expansion tank does not pose any problem, the tube 58 being able to be demolded in the same direction as the lower part 32.
  • the degassing passage 34 can be a simple orifice formed in a wall common to the lower part. lower 32 of the expansion tank and the intake manifold 26, or else, as shown in FIG. 2, an orifice surrounded by a small vertical rim 60 oriented upwards for guiding the air and gas bubbles to the expansion tank 18.
  • FIG. 4 represents an alternative embodiment of the invention, differing from that of FIGS. 1 to 3 only in that the tube 62 forming a conduit for return of the liquid from the expansion vessel 18 to the lower compartment 28 of the water box 16 extends, not to the outlet pipe 30, but only to the upper part of the compartment 28, the lower end of the tube 62 opening into the water box 16 directly in below the center wall 22.
  • the variant shown in FIG. 5 differs from that of FIG. 4 in that the upper compartment 24 of the water box 16 and the intake manifold 26 do not communicate directly with the expansion tank 18, that is that is to say that the liquid degassing passage is not formed by an orifice in a wall common to the expansion tank 18 and to the water box 24 or to the intake manifold 26.
  • the degassing passage comprises an upper tube 64 of the bundle of tubes 10 which opens, on the side of the water box 16, directly into the lower part 32 of the expansion tank, this lower part 32 being in direct extension from the water box 16 and being separated from the upper compartment 24 by a partition 66.
  • the air or gas bubbles conveyed by the liquid collect at the upper end of the other water box 12, are sucked by the tube 64 and arrive in the lower part 32 of the expansion tank. For the rest, the operation is identical to that previously exposed.
  • the expansion tank 18 is formed above the water box 16 and does not include a return duct 44 or 62 extending vertically along this water box 16
  • the fluid return duct is then formed by the upper tube 64 of the bundle 10, which opens directly into the lower part 32 of the expansion tank 18, separated from the upper compartment 24 of the water box 16 by the partition 66.
  • the liquid is therefore returned by this tube 64 and by the other water box 12.
  • the liquid degassing passage can in this case be formed by an orifice 68 in the partition 66, or by a small tube extending towards the high from this partition and establishing communication between the expansion tank 18 and the upper compartment 24 of the water box 16.
  • the air or gas bubbles conveyed by the liquid brought into the water box 16 by the intake manifold 26 collect in the upper part re from compartment 24 and are sucked into the expansion tank 18 through the orifice 68 or the aforementioned small conduit.
  • the embodiment shown in Figure 7 differs from that in Figure 6 in that the functions of the degassing passage and the liquid return duct are reversed.
  • the other water box 12 comprises, in the upper part, a pipe 70 for liquid intake and, in the lower part, a pipe 74 for the liquid outlet, the internal space of this water box 12 being shared by a central partition 76 in two compartments separated in a sealed manner from one another.
  • the water box 16 which is molded in a single piece with the lower part 32 of the expansion vessel 18 therefore no longer comprises these inlet and outlet pipes.
  • the internal space of the water box 16 is separated from the internal space of the lower part 32 of the expansion tank by an internal partition 78, corresponding to the internal partition 66 of FIG. 6 and which, on the one hand , directly connects the end of the upper tube 64 of the bundle 10 to the expansion tank 18 and, on the other hand, has an orifice or a connecting duct between the expansion tank 18 and the water box 16, for the liquid return.
  • the liquid is brought into the upper compartment of the water box 12 by the intake manifold 70, circulates in the tubes of the upper half of the bundle in the direction of the water box 16, passes through this water box, circulates, in the opposite direction, in the tubes of the lower half of the bundle 10, enters the lower compartment of the water box 12 and exits through the tube 74.
  • the air or gas bubbles conveyed by the liquid collect at the top of the upper compartment of the water box 12 and are sucked by the tube 64 in the expansion tank 18.
  • the air or gas bubbles which could collect in the water box 16 can pass into the expansion tank 18 through the liquid return pipe presented by the partition 78.
  • the water box 16 molded in one piece with the lower part 32 of the expansion tank 18, comprises in the upper part the inlet manifold 80, while the outlet manifold 82 is provided on the lower part of the other water box 12.
  • Neither of these two water boxes has a central partition wall and the liquid circulates in the same direction in in all the tubes of the bundle 10.
  • the upper tube 64 of this bundle forms the liquid return duct and, at its outlet in the water box 16, is connected directly to the expansion tank 18 by a partition 84 separating the expansion vessel and the water box 16, this partition 84 being analogous to the partition 78 of FIG. 7.
  • this partition 84 provides an orifice or a small communication conduit between the expansion vessel 18 and the water box 16 which forms the degassing passage for the liquid.
  • the liquid is brought through the tubing 80 into the water box 16, circulates in the same direction in all the tubes of the bundle 10, except for the tube 64, reaches the water box 12 and leaves the exchanger through the tubing 82.
  • the air or gas bubbles tend to collect in the upper part of the water box 16 and are sucked into the expansion tank 18 through the orifice or the small duct formed by the partition internal 84.
  • the return of liquid from the expansion vessel 18 to the exchanger is effected by the upper tube 64 of the bundle 10.
  • the variant embodiment shown in FIG. 9 differs from that of FIG. 8 in that the functions of the water boxes 16 and 12 are reversed, as well as the functions of the degassing passage and of the liquid return duct.
  • the water box 12 therefore comprises, in the upper part, a liquid inlet pipe 86, while the water box 16 comprises, in the lower part, the liquid outlet pipe 88.
  • the liquid degassing passage is formed by the upper tube 64 of the bundle 10 which, thanks to the internal partition 84, opens directly into the expansion vessel 18.
  • the orifice or the conduit that this partition 84 provides between the vessel d expansion 18 and the water box 16 constitutes the liquid return duct.
  • the liquid is brought through the tubing 86 into the water box 12, circulates in the tubes of the bundle 10 in the direction of the water box 16, circulates in this water box and leaves the exchanger through the tubing. outlet 88.
  • the air or gas bubbles carried by the liquid tend to collect in the upper part of the water box 12 and are sucked into the expansion tank 18 by the tube 64.
  • Figure 10 shows another alternative embodiment of the invention, in which the joint plane between the part of the expansion tank which is molded with the water box and the attached part of this expansion tank is, either horizontal, but vertical, as indicated by the dotted line 90.
  • the water box 16 is in this case molded in one piece with a first part 92 of the expansion tank, which extends above and in the extension of the water box 16 and which comprises a filling nozzle 94 substantially vertical in its upper part.
  • This vertical end piece 94 enables the orifices or conduits forming the liquid degassing passage and the liquid return conduit to be removed from the mold, respectively.
  • the first part 92 of the expiration vessel also extends horizontally, that is to say perpendicular to the general direction of the water box 16, above the bundle of tubes 10, and comprises an open face corresponding to the joint plane 90. This open face is closed by an insert 96, the underside of which can be formed with the tab 98 for fixing the expansion vessel to the upper side of the bundle of tubes 10.
  • This second part 96 of the vessel The expansion can have a greater or lesser volume, as represented by the dotted lines. This makes it possible to manufacture a one-piece molded water box and expansion tank device, having a standard size regardless of the capacity of the heat exchanger, and to adapt the expansion vessel to the capacity of the heat exchanger by fixing, on the first part 92 of this expansion vessel, a second part 96 of suitable volume.
  • this direct communication can be obtained by removing the partition 66 and the small tube extending upward from this partition.

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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)
EP86402178A 1985-10-09 1986-10-02 Dispositif de boîte à eau de vase d'expansion, et échangeur de chaleur comprenant ce dispositif Withdrawn EP0219419A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8514966A FR2588366A1 (fr) 1985-10-09 1985-10-09 Dispositif de boite a eau et de vase d'expansion, et echangeur de chaleur comprenant ce dispositif
FR8514966 1985-10-09

Publications (1)

Publication Number Publication Date
EP0219419A1 true EP0219419A1 (fr) 1987-04-22

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ID=9323673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86402178A Withdrawn EP0219419A1 (fr) 1985-10-09 1986-10-02 Dispositif de boîte à eau de vase d'expansion, et échangeur de chaleur comprenant ce dispositif

Country Status (3)

Country Link
EP (1) EP0219419A1 (pt)
BR (1) BR8604906A (pt)
FR (1) FR2588366A1 (pt)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287883A1 (en) * 1987-04-13 1988-10-26 Miles Inc. Test strip device with volume metering capillary gap
EP0454559A1 (fr) * 1990-04-26 1991-10-30 Valeo Thermique Moteur Dispositif de boîte à eau et de vase d'expansion pour un échangeur de chaleur, tel qu'un radiateur de refroidissement, et échangeur de chaleur comprenant ce dispositif
EP0611940A1 (fr) * 1993-02-19 1994-08-24 Valeo Thermique Moteur Ensemble rigide comprenant deux échangeurs de chaleur et un vase d'expansion
DE4320343A1 (de) * 1993-06-19 1994-12-22 Behr Gmbh & Co Wärmetauscher, insbesondere Querstromkühler für Brennkraftmaschinen
DE4328448A1 (de) * 1993-08-24 1995-03-02 Behr Gmbh & Co Wärmetauscher
US6123144A (en) * 1997-04-15 2000-09-26 Cummins Engine Company, Inc. Integrated heat exchanger and expansion tank

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225253C2 (de) * 1992-08-03 1996-12-05 Behr Gmbh & Co Anordnung eines aus Kunststoff bestehenden Wasserkastens und eines Ausgleichsbehälters aus Kunststoff

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674689A (en) * 1922-11-20 1928-06-26 Harrison Radiator Corp Cooling system for internal-combustion engines and process of operating the same
US3406751A (en) * 1967-06-30 1968-10-22 Young Radiator Co Crossflow radiator
FR2514484A1 (fr) * 1981-10-12 1983-04-15 Valeo Boite a eau pour un echangeur de chaleur a circulation de liquide comprenant un passage de degazage du liquide et echangeur de chaleur comprenant cette boite a eau

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674689A (en) * 1922-11-20 1928-06-26 Harrison Radiator Corp Cooling system for internal-combustion engines and process of operating the same
US3406751A (en) * 1967-06-30 1968-10-22 Young Radiator Co Crossflow radiator
FR2514484A1 (fr) * 1981-10-12 1983-04-15 Valeo Boite a eau pour un echangeur de chaleur a circulation de liquide comprenant un passage de degazage du liquide et echangeur de chaleur comprenant cette boite a eau

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287883A1 (en) * 1987-04-13 1988-10-26 Miles Inc. Test strip device with volume metering capillary gap
EP0454559A1 (fr) * 1990-04-26 1991-10-30 Valeo Thermique Moteur Dispositif de boîte à eau et de vase d'expansion pour un échangeur de chaleur, tel qu'un radiateur de refroidissement, et échangeur de chaleur comprenant ce dispositif
FR2661489A1 (fr) * 1990-04-26 1991-10-31 Valeo Thermique Moteur Sa Dispositif de boite a eau et de vase d'expansion pour un echangeur de chaleur, tel qu'un radiateur de refroidissement, et echangeur de chaleur comprenant ce dispositif.
EP0611940A1 (fr) * 1993-02-19 1994-08-24 Valeo Thermique Moteur Ensemble rigide comprenant deux échangeurs de chaleur et un vase d'expansion
FR2701760A1 (fr) * 1993-02-19 1994-08-26 Valeo Thermique Moteur Sa Ensemble rigide comprenant deux échangeurs de chaleur et un vase d'expansion.
DE4320343A1 (de) * 1993-06-19 1994-12-22 Behr Gmbh & Co Wärmetauscher, insbesondere Querstromkühler für Brennkraftmaschinen
FR2706598A1 (fr) * 1993-06-19 1994-12-23 Behr Gmbh & Co Echangeur de chaleur, notamment radiateur à flux transversal pour moteurs à combustion interne.
ES2112719A1 (es) * 1993-06-19 1998-04-01 Behr Gmbh & Co Intercambiador de calor, particularmente radiador de flujo transversal para maquinas motrices de combustion interna.
DE4320343C2 (de) * 1993-06-19 2002-11-21 Behr Gmbh & Co Wärmetauscher, insbesondere Querstromkühler für Brennkraftmaschinen
DE4328448A1 (de) * 1993-08-24 1995-03-02 Behr Gmbh & Co Wärmetauscher
US6123144A (en) * 1997-04-15 2000-09-26 Cummins Engine Company, Inc. Integrated heat exchanger and expansion tank

Also Published As

Publication number Publication date
BR8604906A (pt) 1987-07-07
FR2588366A1 (fr) 1987-04-10

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