EP0601896A1 - Wasserkasten und Ausdehnungsgefäss für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug - Google Patents

Wasserkasten und Ausdehnungsgefäss für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug Download PDF

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Publication number
EP0601896A1
EP0601896A1 EP93401035A EP93401035A EP0601896A1 EP 0601896 A1 EP0601896 A1 EP 0601896A1 EP 93401035 A EP93401035 A EP 93401035A EP 93401035 A EP93401035 A EP 93401035A EP 0601896 A1 EP0601896 A1 EP 0601896A1
Authority
EP
European Patent Office
Prior art keywords
partition
tank
reservoir
bottom wall
water box
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.)
Granted
Application number
EP93401035A
Other languages
English (en)
French (fr)
Other versions
EP0601896B1 (de
Inventor
Jean-François Iem
Dany Boquel
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 Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0601896A1 publication Critical patent/EP0601896A1/de
Application granted granted Critical
Publication of EP0601896B1 publication Critical patent/EP0601896B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F28F2275/085—Fastening; Joining by clamping or clipping with snap connection

Definitions

  • the invention relates to a water box and expansion tank device for a heat exchanger, in particular for a radiator for cooling a motor vehicle engine.
  • It relates more particularly to a device of the type comprising a reservoir having an open face delimited by a peripheral rim for assembling the reservoir on a collecting plate, as well as a removable partition having a peripheral edge connected in leaktight manner to an edge of peripheral support inside the tank, to divide the tank into two separate compartments respectively forming a water box and expansion tank.
  • the tank forms an integrated assembly bringing together the water box and the expansion tank and it is connected, via the collector plate, to one end of a bundle of tubes, including another end. is connected to another water box.
  • the heat exchanger thus formed is intended to be traversed by a liquid, generally water added with an antifreeze, which circulates in a closed circuit to serve for example for the cooling of an internal combustion engine.
  • the liquid is itself cooled by heat exchange with an air flow which scans the tubes of the bundle.
  • the coolant enters the water box compartment of the tank and then reaches the other water box.
  • the expansion vessel compartment which is placed above the water box compartment, is intended to absorb variations in the volume of the liquid as a function of temperature and to collect any water and gas bubbles that may be present in the circuit, so as to avoid the formation of hot spots on the cylinder head of the engine. We then provide a degassing making the two compartments of the tank communicate.
  • This known device has the drawback that, under the effect of significant pressure differences between the two compartments of the tank, the partition deviates from its position, so that the connection is no longer sealed.
  • the object of the invention is in particular to overcome the drawbacks mentioned above.
  • the invention proposes a device for a water box and an expansion tank of the type defined in the introduction, which comprises at least one spacer provided with latching means for connecting the removable partition to a bottom wall of the tank, opposite the open face.
  • the partition is connected to the bottom wall and kept at a distance therefrom, which allows it to withstand pressure differences between the two tank compartments.
  • the device comprises a spacer formed projecting from the partition and terminated by a latching head suitable for being forced into a sleeve of suitable shape which depends on the wall of background.
  • This main spacer is advantageously formed on a central region of the partition, so as to maintain this partition in its middle.
  • the device further comprises at least one secondary spacer attached to the bottom wall of the tank and terminated by a latching head capable of being forced into an opening of suitable shape which is provided in the partition.
  • the device comprises two secondary spacers respectively attached to two end regions opposite the bottom wall.
  • the partition is kept at a distance from the bottom wall, not only in the middle, but also in two end regions.
  • two opposite end regions of the partition each comprise at least one lug connecting to the partition and suitable for bearing against the collector plate, after assembly of the latter with the reservoir.
  • the partition is also kept at a given distance from the collector plate, which is located opposite the bottom wall.
  • the device comprises two support legs in each of the end regions of the partition.
  • the reservoir internally comprises, in each of two opposite regions thereof, at least one immobilizing tab suitable for engaging in a housing of suitable shape, formed in an edge of end of the partition, which allows it to be immobilized.
  • the device shown in Figures 1 to 4 comprises a reservoir 10 made in one piece by molding a plastic material.
  • This reservoir comprises two large opposite faces 12 and 14 and two small opposite faces 16 and 18, these four faces being connected by a bottom wall 20.
  • the latter itself comprises a main part 22 in the shape of a dome with a straight section semi-circular (Figure 2) which connects to the sides 16 and 18 respectively by two inclined sides 24 and 26 also forming part of the bottom wall.
  • the faces 12, 14, 16 and 18 lead to a peripheral rim 28 of generally rectangular outline delimiting an open face 30.
  • the peripheral rim 28 allows the reservoir 10 to be assembled on a collecting plate 32 (shown in phantom in Figures 2 and 3) and this in a manner known per se.
  • This collector plate comprises a multiplicity of holes for the sealed mounting of a multiplicity of tubes 34 (also shown in phantom line) forming a beam.
  • the device further comprises an internal partition 36 which extends over the entire length and entire width of the tank 10 to divide it into two separate compartments: a lower compartment 38 forming a water box disposed on the side of the collecting plate 32 and a upper compartment 40 forming an expansion vessel and disposed on the side of the bottom wall 20.
  • the reservoir 10 comprises a tube 42 depending on the face 12 and located, in the example, substantially in the middle, this tube opening into the compartment 38 to allow the admission of a coolant.
  • the reservoir 10 further comprises a filling base 44 attached to the bottom wall 20 and communicating with the compartment 40.
  • the partition 36 has a peripheral edge 46 tightly connected to a peripheral bearing edge 48 of the tank.
  • the bearing edge 48 consists of a shoulder molded and extending over the entire length of the faces 12 and 14 and over the entire width of the faces 16 and 18.
  • the peripheral edge 46 has a curved part 50 adapted to cooperate with a curved part homologous 52 of the bearing edge 48 in the region of the tubing 42, so that the latter opens into the compartment 38.
  • a main spacer 54 (FIG. 2) is formed projecting over a central region of the partition 36.
  • the spacer 54 extends in a direction substantially perpendicular to that of the open face 30 and it ends by a latching head 56 suitable for being forced into a sleeve 58 of suitable shape which depends on the bottom wall 20.
  • the sleeve 58 is formed projecting from the bottom wall 20 and extends in a direction generally perpendicular to the open face 30.
  • the head 56 is snapped into the sleeve 58 to ensure that the partition 36 is held in its middle part.
  • the device further comprises two secondary spacers 60 and 62 (Figure 1) attached to the bottom wall 20 of the reservoir 10.
  • the spacer 60 is attached to the sidewall 26 and ends with a clean latching head 64 (Figure 3) to be introduced by force into an opening 66 of suitable shape (FIG. 4) which is formed in the partition 36 in an end region 68 thereof, which is located close to the face 18 of the reservoir 10.
  • the other secondary spacer 62 is attached to an opposite end region of the bottom wall, that is to say to the side 24. It also ends with a similar snap-on head (not visible in the drawings) to the head 64 described above.
  • This latching head is adapted to cooperate with an opening similar to the opening 66 and formed in an opposite end region 70 of the partition 36, which is located close to the face 16 of the reservoir 10 (FIG. 1).
  • the end region 68 of the partition 36 ends in two spaced apart legs 72 (FIGS. 1, 3 and 4), capable of bearing perpendicularly against the collecting plate 32 after assembly of the latter with the reservoir 10.
  • the two tabs 72 are housed in the two regions which respectively connect the face 18 with the faces 12 and 14 of the tank.
  • the other end region 70 of the partition comprises two similar tabs 74 capable of bearing against the collecting plate 32 and coming to be housed in the two regions which respectively connect the face 16 with the faces 12 and 14 of the tank.
  • the tabs 72 and 74 contribute to maintaining the partition in position, by allowing the edge 46 to rest against the rim 48 in the end regions of the tank.
  • the reservoir 10 has internally two immobilization tabs 76 located in the connection zone of the sidewall 26 and of the face 18. These two tabs 76 are elastic and extend in directions generally perpendicular to the open face 30 of the reservoir.
  • the two tabs 76 in the form of a tongue, are intended to be fitted into two housings 78 of suitable shape (FIG. 4) provided in the end region 68 of the partition 36.
  • the two housings 78 are located in the immediate vicinity legs 72 mentioned above.
  • the reservoir 10 further comprises two other similar tabs (not shown) formed in the connection zone of the sidewall 24 and of the face 16 and suitable for cooperating with suitable housings (not visible in the drawings) which the end region has 70 of the partition 36.
  • the aforementioned legs immobilize the partition and prevent it from moving in directions generally parallel to the collector plate 32.
  • the partition 36 also includes a degassing conduit 82 molded therewith.
  • This degassing duct is suitable for establishing communication between the intake manifold 42 opening into the tank 38 and the expansion tank compartment 40.
  • the duct 82 has a bent shape and has a first branch 84 opening into the upper part of the tubing 42 and a branch 46 extending perpendicularly to the branch 84 and opening at the top of the compartment 40.
  • the degassing duct 82 is intended to trap the air or gas bubbles about to penetrate into the compartment 38 in order to evacuate them towards the compartment 40.
  • partition 36 is effectively maintained inside the tank 10 and can thus resist the significant pressure differences which may appear between the compartments 38 and 40.
  • spacers 54, 60 and 62 already allow the partition to be held inside the tank before mounting it on the manifold, that is to say before mounting the heat exchanger.
  • the device of the invention is particularly suitable for the manufacture of heat exchangers for cooling internal combustion engines, in particular diesel engines.

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)
EP19930401035 1992-04-21 1993-04-21 Wasserkasten und Ausdehnungsgefäss für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug Expired - Lifetime EP0601896B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204857A FR2690238B1 (fr) 1992-04-21 1992-04-21 Dispositif de boite a eau et de vase d'expansion pour echangeur de chaleur, en particulier de vehicules automobiles.
FR9204857 1992-04-21

Publications (2)

Publication Number Publication Date
EP0601896A1 true EP0601896A1 (de) 1994-06-15
EP0601896B1 EP0601896B1 (de) 1997-09-17

Family

ID=9429065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930401035 Expired - Lifetime EP0601896B1 (de) 1992-04-21 1993-04-21 Wasserkasten und Ausdehnungsgefäss für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug

Country Status (4)

Country Link
EP (1) EP0601896B1 (de)
DE (1) DE69313987T2 (de)
ES (1) ES2109447T3 (de)
FR (1) FR2690238B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745076B1 (fr) * 1996-02-20 1998-04-10 Valeo Thermique Moteur Sa Dispositif de boite a eau et de vase d'expansion pour echangeur de chaleur de vehicule automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395397A1 (fr) * 1977-06-22 1979-01-19 Chausson Usines Sa Boite a eau formant nourrice de mise en pression
FR2431601A2 (fr) * 1978-07-21 1980-02-15 Chausson Usines Sa Boite a eau formant nourrice de mise en pression
DE3006093A1 (de) * 1979-02-20 1980-09-04 Ferodo Sa Gehaeuse fuer eine sammelkammer und eine ausgleichskammer eines waermetauschers
FR2465986A1 (fr) * 1979-09-24 1981-03-27 Ferodo Sa Dispositif a chambre collectrice et chambre d'expansion pour echangeur de chaleur
FR2491610A1 (fr) * 1980-10-02 1982-04-09 Valeo Boite a eau formant chambre collectrice et chambre d'expansion pour un echangeur de chaleur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395397A1 (fr) * 1977-06-22 1979-01-19 Chausson Usines Sa Boite a eau formant nourrice de mise en pression
FR2431601A2 (fr) * 1978-07-21 1980-02-15 Chausson Usines Sa Boite a eau formant nourrice de mise en pression
DE3006093A1 (de) * 1979-02-20 1980-09-04 Ferodo Sa Gehaeuse fuer eine sammelkammer und eine ausgleichskammer eines waermetauschers
FR2465986A1 (fr) * 1979-09-24 1981-03-27 Ferodo Sa Dispositif a chambre collectrice et chambre d'expansion pour echangeur de chaleur
FR2491610A1 (fr) * 1980-10-02 1982-04-09 Valeo Boite a eau formant chambre collectrice et chambre d'expansion pour un echangeur de chaleur

Also Published As

Publication number Publication date
FR2690238B1 (fr) 1999-06-04
ES2109447T3 (es) 1998-01-16
EP0601896B1 (de) 1997-09-17
DE69313987D1 (de) 1997-10-23
FR2690238A1 (fr) 1993-10-22
DE69313987T2 (de) 1998-01-22

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