US20150267972A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- US20150267972A1 US20150267972A1 US14/661,532 US201514661532A US2015267972A1 US 20150267972 A1 US20150267972 A1 US 20150267972A1 US 201514661532 A US201514661532 A US 201514661532A US 2015267972 A1 US2015267972 A1 US 2015267972A1
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- United States
- Prior art keywords
- tank
- partition plate
- plate
- portions
- pair
- 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.)
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- 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
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
- F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
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- 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
- F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
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- 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
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
Definitions
- the present invention relates to a heat exchanger.
- JP2000-304488A discloses a heater core which includes a core unit composed of a plurality of tubes arranged in parallel and a pair of tanks arranged to sandwich the core unit at opposite longitudinal ends of the tubes and in which a tank interior is partitioned by a partition plate.
- the tank of the heat exchanger described in the above literature is a so-called combined tank composed of a core plate connected to the core unit and a tank plate defining a tank internal space by being combined with the core plate.
- the partition plate is positioned by engaging projecting pieces provided on the partition plate with notches provided on each of the core plate and the tank plate.
- the projecting pieces exposed to the outside of the tank by penetrating through the notches of the core plate and the tank plate are squeezed by press-working at the time of molding the tank, thereby closing clearances between the notches and the projecting pieces. In this way, the leakage of fluid flowing in the tank to the outside is prevented.
- the present invention aims to provide a tank capable of preventing leakage even if a partition plate is further thinned.
- a heat exchanger which includes a core unit including a plurality of pipe members open at opposite ends and arranged in parallel, a pair of tanks joined to the core unit to sandwich the core unit from opposite sides in a longitudinal direction of the pipe members and communicating with the pipe members; and a partition plate for closing a cross-section of the tank intersecting with a pipe member arrangement direction.
- the partition plate of the heat exchanger includes a recess on an outer edge portion to be held in contact with an inner wall surface of the tank, the tank includes a projection to be engaged with the recess on the inner wall surface, and the projection and the recess are formed by plastic working a part of the tank in contact with the partition plate from an outer side toward an inner side of the tank in a state where the partition plate is arranged in the tank.
- the partition plate is positioned with respect to the tank by the engagement of the projection and the recess and the part deformed by plastic working does not project outwardly of the tank, there is no possibility that cooling liquid leaks to the outside of the tank even if the partition plate is further thinned for a weight reduction.
- FIG. 1 is an overall configuration diagram of a heat exchanger according to an embodiment of the present invention
- FIG. 2 is a perspective view enlargedly showing a part A of FIG. 1 ,
- FIG. 3 is an exploded view of the part shown in FIG. 2 .
- FIG. 4A is a sectional view showing a temporarily assembled state of a tank
- FIG. 4B is a sectional view after press-working
- FIG. 5 is a sectional view along V-V of FIG. 4 .
- FIG. 6 is a sectional view along VI-VI of FIG. 4 .
- FIG. 7 is a sectional view along VII-VII of FIG. 4 .
- FIG. 8 is a sectional view along VIII-VIII of FIG. 4 .
- FIG. 1 is an overall configuration diagram of a heat exchanger 1 according to an embodiment of the present invention.
- This heat exchanger 1 is used, for example, as a heat exchanger for heating, i.e. a so-called heater core, to be installed in a vehicle and formed by brazing and joining each member made of aluminum alloy. Brazing and joining are performed by applying a brazing material to a surface of at least one of members to be held in contact with each other in advance and introducing the members in an assembled state into a furnace and heating them. It should be noted that each member is described in detail later.
- the heat exchanger 1 includes a core unit 7 composed of a plurality of pipe members 3 open at opposite ends and arranged in parallel and corrugated fins 4 sandwiched between adjacent ones of the pipe members 3 , and a pair of tanks 2 A, 2 B joined to sandwich the core unit 7 from opposite sides in a longitudinal direction of the pipe members 3 and communicating with the pipe members 3 .
- a supply flow passage 5 for supplying cooling liquid to the heat exchanger 1 and a discharge flow passage 6 for discharging the cooling liquid from the heat exchanger 1 are connected to one tank 2 A.
- the tank 2 A includes a partition plate 12 for closing a cross-section of the tank 2 A intersecting with a pipe member arrangement direction. The shape and positioning of the partition plate 12 are described later.
- the partition plate 12 is arranged, for example, between a part of the tank 2 A connected to the supply flow passage 5 and a part thereof connected to the discharge flow passage 6 .
- a side connected to the supply flow passage 5 is referred to as an inlet side and a side connected to the discharge flow passage 6 is referred to as an outlet side out of spaces partitioned by the partition plate 12 in the tank 2 A.
- the cooling liquid supplied from the supply flow passage 5 flows into the tank 2 B via each pipe member 3 connected to the inlet side of the tank 2 A, moves in the tank 2 B, returns to the outlet side of the tank 2 A via each pipe member 3 connected to the outlet side of the tank 2 A and is discharged via the discharge flow passage 6 .
- the cooling liquid is mainly cooled by a heat exchange with the pipe members 3 while flowing in the pipe members 3 .
- FIG. 2 is a perspective view showing a part A of FIG. 1 , i.e. a part of the tank 2 A where the partition plate 12 is arranged.
- FIG. 3 is a perspective view of the same part as in FIG. 2 .
- the tank 2 A includes a core plate 10 to be joined to the core unit 7 , a tank plate 11 to be joined to the core plate 10 and the partition plate 12 for dividing a tank space formed by the core plate 10 and the tank plate 11 .
- the core plate 10 includes a bottom portion 10 B in which a row of openings 10 A, through which the pipe members 3 are inserted, is provided, and a pair of wall portions 10 C arranged at opposite sides of the row of the openings 10 A in a direction perpendicular to an arrangement direction of the openings 10 A and extending in a direction opposite to the core unit 7 from the bottom portion 10 B. That is, the core plate 10 is a member having a substantially U-shaped cross-section perpendicular to the arrangement direction of the openings 10 A.
- the tank plate 11 is joined to the pair of wall portions 10 C to form the tank space together with the core plate 10 .
- the partition plate 12 is arranged to close the cross-section of the tank 2 A perpendicular to the arrangement direction of the openings 10 A in order to divide the tank space formed by the core plate 10 and the tank plate 11 .
- a first projecting portion 12 A is provided on an edge portion of the partition plate 12 to be held in contact with the tank plate 11 and this first projecting portion 12 A is engaged with an engaging hole 11 A provided on the tank plate 11 .
- a pair of second projecting portions 12 B is provided on edge portions of the partition plate 12 facing the pair of wall portions 10 C, and this pair of second projecting portions 12 B are engaged with a pair of cut portions 11 B provided on the tank plate 11 .
- the above tank plate 11 and partition plate 12 are positioned with respect to the core plate 10 by later-described projections 13 provided on the pair of wall portions 10 C.
- opposite end parts of the tanks 2 A, 2 B may be closed by end plates similar to the partition plate 12 , or the core plate 10 or the tank plate 11 may be molded into a channel with closed opposite ends.
- FIGS. 4A and 4B are both a sectional view along IV-IV of FIG. 2 (sectional view including a part into which a punch 14 is to be driven), wherein FIG. 4A shows a state where the core plate 10 , the tank plate 11 and the partition plate 12 are temporarily assembled and FIG. 4B shows a state where the projections 13 are formed by plastic deformation.
- stepped portions 20 on which the second projecting portions 12 B of the partition plate 12 are to be seated are provided on surfaces of the pair of wall portions 10 C facing each other.
- the temporarily assembled state is such a state where the partition plate 12 and the tank plate 11 with the first projecting portion 12 A and the engaging hole 11 A of the tank plate 11 engaged and with the pair of second projecting portions 12 B and the cut portions 11 B of the tank plate 11 engaged are so assembled with the core plate 10 that the second projecting portions 12 B are seated on the stepped portions 20 .
- first projecting portion 12 A of the partition plate 12 is merely engaged with the engaging hole 11 A of the tank plate 11 in this embodiment, the first projecting piece 12 A may be plastically deformed at an outer side of the tank plate 11 and the partition plate 12 may be held in close contact and temporarily fixed so as not to be disengaged from the engaging hole 11 A.
- the punch 14 is driven from an outer side toward an inner side of the tank 2 A into parts of the wall portions 10 C in contact with outer edge portions of the second projecting portions 12 B in a projecting direction.
- the punch 14 used has, for example, a spherical tip and a diameter equal to or smaller than a plate thickness of the partition plate 12 .
- the core plate 10 , the tank plate 11 and the partition plate 12 are brazed. In this way, the tank 2 A is formed.
- FIG. 5 is a sectional view along V-V of FIG. 4B and FIG. 6 is a sectional view along VI-VI of FIG. 4B .
- the projections 13 formed on the core plate 10 and the recesses 15 formed on the partition plate 12 by driving the punch 14 are engaged with each other and the projections 13 are also engaged with the cut portions 11 B of the tank plate 11 .
- FIG. 7 is a sectional view along VII-VII of FIG. 4A and FIG. 8 is a sectional view along VIII-VIII of FIG. 4B .
- a vertical direction of FIGS. 7 and 8 is a width direction of the cut portions 11 B and a thickness direction of the partition plate 12
- B denotes a width of the cut portions 11 B before the punch 14 is driven
- A denotes a thickness of the second projecting portions 12 B of the partition plate 12 before the punch 14 is driven
- a relationship where the width B is larger than the thickness A is satisfied as shown in FIGS. 7 and 8 . That is, in the temporarily assembled state before the punch 14 is driven, there are clearances between the cut portions 11 B and the second projecting portions 12 B of the partition plate 12 . However, when the punch 14 is driven, the second projecting portions 12 B are plastically deformed to increase the thickness A and fill up the clearances to the cut portions 11 B. That is, the core plate 10 , the tank plate 11 and the partition plate 12 are integrated.
- partition plates 12 are similarly fixed by driving the punch 14 also when two or more partition plates 12 are provided. Further, when two or more partition plates 12 are arranged in the tank 2 A, partition plates 12 are also arranged in the tank 2 B. Also in this case, a configuration for fixing the partition plates 12 is similar.
- the partition plate 12 includes the recesses 15 on parts to be held in contact with an inner wall surface of the tank 2 A and the tank 2 A includes the projections 13 to be engaged with the recesses 15 .
- the projections 13 and the recesses 15 are formed by driving the punch 14 into the parts of the tank 2 A held in contact with the partition plate 12 from the outer side toward the inner side of the tank 2 A with the partition plate 12 arranged in the tank 2 A.
- the partition plate 12 is positioned in the tank 2 A by the engagement of the projections 13 and the recesses 15 .
- the cooling liquid does not leak from the clearances between the partition plate 12 and the wall surface of the tank 2 A even if the partition plate 12 is further thinned.
- the tank 2 A includes the core plate 10 and the tank plate 11
- the tank plate 11 includes the pair of cut portions 11 B
- the partition plate 12 is engaged with the cut portions 11 B.
- the recesses 15 are formed on the parts of the partition plate 12 to be engaged with the cut portions 11 B.
- the partition plate 12 is positioned with respect to the tank plate 11 by being engaged with the cut portions 11 B and positioned with respect to the core plate 10 by the engagement of the projections 13 and the recesses 15 .
- the projections 13 formed by driving the punch 14 are also engaged with the cut portions 11 B.
- the partition plate 12 is positioned with respect to the core plate 10 by driving the punch 14 to form the projections 13 and the recesses 15 and, simultaneously with this, the tank plate 11 is also positioned with respect to the core plate.
- steps required to assemble the tank 2 A can be simplified and a cost reduction can be realized.
- the punch 14 is driven into the parts of the core plate 10 held in contact with the partition plate 12 , the deformation of the tank 2 A caused by the driving of the punch 14 is suppressed and stable brazing can be performed.
- the parts of the partition plate 12 to be engaged with the cut portions 11 serve as the second projecting portions 12 B projecting in a direction toward the wall portions 10 C and the core plate 10 is provided with the stepped portions 20 on which the second projecting portions 12 B are to be seated.
- This can prevent the rotation of the partition plate 12 and the tank plate 11 about the arrangement direction of the openings 10 A with respect to the core plate 10 in the tank 2 A in the temporarily assembled state before the punch 14 is driven and enables the tank 2 A to be accurately assembled.
- the tank plate 11 includes the engaging hole (through hole) 11 A on a line connecting the pair of cut portions 11 B and the partition plate 12 includes the first projecting portion (engaging portion) 12 A to be engaged with the engaging hole 11 A. This causes the partition plate 12 to be more reliably positioned with respect to the tank plate 11 .
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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)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Geometry (AREA)
Abstract
A heat exchanger includes a core unit having a plurality of pipe members arranged in parallel, a pair of tanks joined to the core unit to sandwich the core unit from opposite sides in a longitudinal direction of the pipe members and communicating with the pipe members, and a partition plate for closing a cross-section of the tank. The partition plate includes a recess on an outer edge portion to be held in contact with an inner wall surface of the tank, the tank includes a projection to be engaged with the recess on the inner wall surface, and the projection and the recess are formed by plastic working a part of the tank in contact with the partition plate from an outer side toward an inner side of the tank in a state where the partition plate is arranged in the tank.
Description
- The present invention relates to a heat exchanger.
- A heater core to be incorporated into an air conditioner is known as a heat exchanger used in an automotive vehicle. JP2000-304488A discloses a heater core which includes a core unit composed of a plurality of tubes arranged in parallel and a pair of tanks arranged to sandwich the core unit at opposite longitudinal ends of the tubes and in which a tank interior is partitioned by a partition plate.
- The tank of the heat exchanger described in the above literature is a so-called combined tank composed of a core plate connected to the core unit and a tank plate defining a tank internal space by being combined with the core plate. The partition plate is positioned by engaging projecting pieces provided on the partition plate with notches provided on each of the core plate and the tank plate. The projecting pieces exposed to the outside of the tank by penetrating through the notches of the core plate and the tank plate are squeezed by press-working at the time of molding the tank, thereby closing clearances between the notches and the projecting pieces. In this way, the leakage of fluid flowing in the tank to the outside is prevented.
- It is effective to thin each member in order to make the heat exchanger lighter and reduce material cost. However, if the partition plate is thinned in the above configuration, it becomes difficult to close the clearances between the notches and the projecting pieces due to deformed parts by press-molding, wherefore cooling liquid flowing inside may leak to the outside.
- Accordingly, the present invention aims to provide a tank capable of preventing leakage even if a partition plate is further thinned.
- According to one aspect of the present invention, a heat exchanger is provided which includes a core unit including a plurality of pipe members open at opposite ends and arranged in parallel, a pair of tanks joined to the core unit to sandwich the core unit from opposite sides in a longitudinal direction of the pipe members and communicating with the pipe members; and a partition plate for closing a cross-section of the tank intersecting with a pipe member arrangement direction. The partition plate of the heat exchanger includes a recess on an outer edge portion to be held in contact with an inner wall surface of the tank, the tank includes a projection to be engaged with the recess on the inner wall surface, and the projection and the recess are formed by plastic working a part of the tank in contact with the partition plate from an outer side toward an inner side of the tank in a state where the partition plate is arranged in the tank.
- According to the above aspect, since the partition plate is positioned with respect to the tank by the engagement of the projection and the recess and the part deformed by plastic working does not project outwardly of the tank, there is no possibility that cooling liquid leaks to the outside of the tank even if the partition plate is further thinned for a weight reduction.
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FIG. 1 is an overall configuration diagram of a heat exchanger according to an embodiment of the present invention, -
FIG. 2 is a perspective view enlargedly showing a part A ofFIG. 1 , -
FIG. 3 is an exploded view of the part shown inFIG. 2 , -
FIG. 4A is a sectional view showing a temporarily assembled state of a tank, -
FIG. 4B is a sectional view after press-working, -
FIG. 5 is a sectional view along V-V ofFIG. 4 , -
FIG. 6 is a sectional view along VI-VI ofFIG. 4 , -
FIG. 7 is a sectional view along VII-VII ofFIG. 4 , and -
FIG. 8 is a sectional view along VIII-VIII ofFIG. 4 . - Hereinafter, an embodiment of the present invention is described with reference to the accompanying drawings.
-
FIG. 1 is an overall configuration diagram of a heat exchanger 1 according to an embodiment of the present invention. This heat exchanger 1 is used, for example, as a heat exchanger for heating, i.e. a so-called heater core, to be installed in a vehicle and formed by brazing and joining each member made of aluminum alloy. Brazing and joining are performed by applying a brazing material to a surface of at least one of members to be held in contact with each other in advance and introducing the members in an assembled state into a furnace and heating them. It should be noted that each member is described in detail later. - The heat exchanger 1 includes a
core unit 7 composed of a plurality ofpipe members 3 open at opposite ends and arranged in parallel andcorrugated fins 4 sandwiched between adjacent ones of thepipe members 3, and a pair oftanks core unit 7 from opposite sides in a longitudinal direction of thepipe members 3 and communicating with thepipe members 3. - A
supply flow passage 5 for supplying cooling liquid to the heat exchanger 1 and adischarge flow passage 6 for discharging the cooling liquid from the heat exchanger 1 are connected to onetank 2A. Further, although not shown inFIG. 1 , thetank 2A includes apartition plate 12 for closing a cross-section of thetank 2A intersecting with a pipe member arrangement direction. The shape and positioning of thepartition plate 12 are described later. - The
partition plate 12 is arranged, for example, between a part of thetank 2A connected to thesupply flow passage 5 and a part thereof connected to thedischarge flow passage 6. Here, for the sake of convenience, a side connected to thesupply flow passage 5 is referred to as an inlet side and a side connected to thedischarge flow passage 6 is referred to as an outlet side out of spaces partitioned by thepartition plate 12 in thetank 2A. - By arranging the
partition plate 12 as described above, the cooling liquid supplied from thesupply flow passage 5 flows into thetank 2B via eachpipe member 3 connected to the inlet side of thetank 2A, moves in thetank 2B, returns to the outlet side of thetank 2A via eachpipe member 3 connected to the outlet side of thetank 2A and is discharged via thedischarge flow passage 6. The cooling liquid is mainly cooled by a heat exchange with thepipe members 3 while flowing in thepipe members 3. -
FIG. 2 is a perspective view showing a part A ofFIG. 1 , i.e. a part of thetank 2A where thepartition plate 12 is arranged.FIG. 3 is a perspective view of the same part as inFIG. 2 . - The
tank 2A includes acore plate 10 to be joined to thecore unit 7, atank plate 11 to be joined to thecore plate 10 and thepartition plate 12 for dividing a tank space formed by thecore plate 10 and thetank plate 11. - The
core plate 10 includes abottom portion 10B in which a row ofopenings 10A, through which thepipe members 3 are inserted, is provided, and a pair ofwall portions 10C arranged at opposite sides of the row of theopenings 10A in a direction perpendicular to an arrangement direction of theopenings 10A and extending in a direction opposite to thecore unit 7 from thebottom portion 10B. That is, thecore plate 10 is a member having a substantially U-shaped cross-section perpendicular to the arrangement direction of theopenings 10A. - The
tank plate 11 is joined to the pair ofwall portions 10C to form the tank space together with thecore plate 10. - The
partition plate 12 is arranged to close the cross-section of thetank 2A perpendicular to the arrangement direction of theopenings 10A in order to divide the tank space formed by thecore plate 10 and thetank plate 11. - A
first projecting portion 12A is provided on an edge portion of thepartition plate 12 to be held in contact with thetank plate 11 and thisfirst projecting portion 12A is engaged with anengaging hole 11A provided on thetank plate 11. Further, a pair of second projectingportions 12B is provided on edge portions of thepartition plate 12 facing the pair ofwall portions 10C, and this pair of second projectingportions 12B are engaged with a pair ofcut portions 11B provided on thetank plate 11. - The
above tank plate 11 andpartition plate 12 are positioned with respect to thecore plate 10 by later-describedprojections 13 provided on the pair ofwall portions 10C. - It should be noted that opposite end parts of the
tanks partition plate 12, or thecore plate 10 or thetank plate 11 may be molded into a channel with closed opposite ends. - Next, the procedure of forming the
tank 2A is described. -
FIGS. 4A and 4B are both a sectional view along IV-IV ofFIG. 2 (sectional view including a part into which apunch 14 is to be driven), whereinFIG. 4A shows a state where thecore plate 10, thetank plate 11 and thepartition plate 12 are temporarily assembled andFIG. 4B shows a state where theprojections 13 are formed by plastic deformation. - As shown in
FIG. 4A , steppedportions 20 on which the second projectingportions 12B of thepartition plate 12 are to be seated are provided on surfaces of the pair ofwall portions 10C facing each other. - The temporarily assembled state is such a state where the
partition plate 12 and thetank plate 11 with thefirst projecting portion 12A and theengaging hole 11A of thetank plate 11 engaged and with the pair of second projectingportions 12B and thecut portions 11B of thetank plate 11 engaged are so assembled with thecore plate 10 that the second projectingportions 12B are seated on thestepped portions 20. - It should be noted that although the
first projecting portion 12A of thepartition plate 12 is merely engaged with theengaging hole 11A of thetank plate 11 in this embodiment, thefirst projecting piece 12A may be plastically deformed at an outer side of thetank plate 11 and thepartition plate 12 may be held in close contact and temporarily fixed so as not to be disengaged from theengaging hole 11A. - If the temporarily assembled state is reached, the
punch 14 is driven from an outer side toward an inner side of thetank 2A into parts of thewall portions 10C in contact with outer edge portions of the second projectingportions 12B in a projecting direction. Thepunch 14 used has, for example, a spherical tip and a diameter equal to or smaller than a plate thickness of thepartition plate 12. - In this way, the parts of the
core plate 10 where thepunch 14 is driven are plastically deformed, theprojections 13 convex in a direction toward the inner side of thetank 2A are formed and recesses 15 to be engaged with theprojections 13 are formed on the outer edge portions of the second projectingportions 12B. - After the
projections 13 and therecesses 15 are formed in the above manner, thecore plate 10, thetank plate 11 and thepartition plate 12 are brazed. In this way, thetank 2A is formed. -
FIG. 5 is a sectional view along V-V ofFIG. 4B andFIG. 6 is a sectional view along VI-VI ofFIG. 4B . - As shown in
FIGS. 5 and 6 , theprojections 13 formed on thecore plate 10 and therecesses 15 formed on thepartition plate 12 by driving thepunch 14 are engaged with each other and theprojections 13 are also engaged with thecut portions 11B of thetank plate 11. -
FIG. 7 is a sectional view along VII-VII ofFIG. 4A andFIG. 8 is a sectional view along VIII-VIII ofFIG. 4B . - If a vertical direction of
FIGS. 7 and 8 is a width direction of thecut portions 11B and a thickness direction of thepartition plate 12, B denotes a width of thecut portions 11B before thepunch 14 is driven and A denotes a thickness of the second projectingportions 12B of thepartition plate 12 before thepunch 14 is driven, a relationship where the width B is larger than the thickness A is satisfied as shown inFIGS. 7 and 8 . That is, in the temporarily assembled state before thepunch 14 is driven, there are clearances between thecut portions 11B and the second projectingportions 12B of thepartition plate 12. However, when thepunch 14 is driven, the second projectingportions 12B are plastically deformed to increase the thickness A and fill up the clearances to thecut portions 11B. That is, thecore plate 10, thetank plate 11 and thepartition plate 12 are integrated. - It should be noted that although a case where only one
partition plate 12 is arranged in thetank 2A is described here, thepartition plates 12 are similarly fixed by driving thepunch 14 also when two ormore partition plates 12 are provided. Further, when two ormore partition plates 12 are arranged in thetank 2A,partition plates 12 are also arranged in thetank 2B. Also in this case, a configuration for fixing thepartition plates 12 is similar. - Next, effects obtained by configuring the
tank 2A as described above are described. - (1) In the heat exchanger 1 of the present embodiment, the
partition plate 12 includes therecesses 15 on parts to be held in contact with an inner wall surface of thetank 2A and thetank 2A includes theprojections 13 to be engaged with therecesses 15. Theprojections 13 and therecesses 15 are formed by driving thepunch 14 into the parts of thetank 2A held in contact with thepartition plate 12 from the outer side toward the inner side of thetank 2A with thepartition plate 12 arranged in thetank 2A. Specifically, thepartition plate 12 is positioned in thetank 2A by the engagement of theprojections 13 and therecesses 15. Since the deformed parts of thepartition plate 12 by the driving of thepunch 14 do not project outwardly of thetank 2A, the cooling liquid does not leak from the clearances between thepartition plate 12 and the wall surface of thetank 2A even if thepartition plate 12 is further thinned. - (2) In the present embodiment, the
tank 2A includes thecore plate 10 and thetank plate 11, thetank plate 11 includes the pair ofcut portions 11B and thepartition plate 12 is engaged with thecut portions 11B. Therecesses 15 are formed on the parts of thepartition plate 12 to be engaged with thecut portions 11B. In this way, thepartition plate 12 is positioned with respect to thetank plate 11 by being engaged with thecut portions 11B and positioned with respect to thecore plate 10 by the engagement of theprojections 13 and therecesses 15. Further, theprojections 13 formed by driving thepunch 14 are also engaged with thecut portions 11B. - Specifically, the
partition plate 12 is positioned with respect to thecore plate 10 by driving thepunch 14 to form theprojections 13 and therecesses 15 and, simultaneously with this, thetank plate 11 is also positioned with respect to the core plate. Thus, according to the present embodiment, steps required to assemble thetank 2A can be simplified and a cost reduction can be realized. - Further, since the
punch 14 is driven into the parts of thecore plate 10 held in contact with thepartition plate 12, the deformation of thetank 2A caused by the driving of thepunch 14 is suppressed and stable brazing can be performed. - (3) In the present embodiment, the parts of the
partition plate 12 to be engaged with thecut portions 11 serve as the second projectingportions 12B projecting in a direction toward thewall portions 10C and thecore plate 10 is provided with the steppedportions 20 on which the second projectingportions 12B are to be seated. This can prevent the rotation of thepartition plate 12 and thetank plate 11 about the arrangement direction of theopenings 10A with respect to thecore plate 10 in thetank 2A in the temporarily assembled state before thepunch 14 is driven and enables thetank 2A to be accurately assembled. - (4) In the present embodiment, the
tank plate 11 includes the engaging hole (through hole) 11A on a line connecting the pair ofcut portions 11B and thepartition plate 12 includes the first projecting portion (engaging portion) 12A to be engaged with the engaginghole 11A. This causes thepartition plate 12 to be more reliably positioned with respect to thetank plate 11. - Although the embodiment of the present invention has been described above, the above embodiment is merely one application example of the present invention and not of the nature to limit the technical scope of the present invention to the specific configuration of the above embodiment.
- The present application claims a priority of Japanese Patent Application No. 2014-57878 filed with the Japan Patent Office on Mar. 20, 2014, and Japanese Patent Application No. 2015-24475 filed with the Japan Patent Office on Feb. 10, 2015, all the contents of which are hereby incorporated by reference.
Claims (4)
1. A heat exchanger, comprising:
a core unit including a plurality of pipe members open at opposite ends and arranged in parallel;
a pair of tanks joined to the core unit to sandwich the core unit from opposite sides in a longitudinal direction of the pipe members and communicating with the pipe members; and
a partition plate for closing a cross-section of the tank intersecting with a pipe member arrangement direction,
wherein:
the partition plate includes a recess on an outer edge portion to be held in contact with an inner wall surface of the tank;
the tank includes a projection to be engaged with the recess on the inner wall surface; and
the projection and the recess are formed by plastic working a part of the tank in contact with the partition plate from an outer side toward an inner side of the tank in a state where the partition plate is arranged in the tank.
2. The heat exchanger according to claim 1 , wherein:
the tank includes a core plate composed of a bottom portion with a row of openings, through which the pipe members of the core unit are inserted, and a pair of wall portions arranged to sandwich the row of the openings in a direction perpendicular to an arrangement direction of the openings and extending in a direction opposite to the core unit from the bottom portion, and a tank plate joined to the pair of wall portions to form a tank space together with the core plate;
the tank plate includes a cut portion on each of a pair of edge portions to be joined to the pair of wall portions;
the partition plate is engaged with the cut portions; and
the recesses are formed in parts of the partition plate to be engaged with the cut portions.
3. The heat exchanger according to claim 2 , wherein:
the parts of the partition plate to be engaged with the cut portions serve as a pair of projecting portions projecting toward each of the pair of wall portions; and
the core plate includes stepped portions on which the projecting portions are to be seated.
4. The heat exchanger according to claim 2 , wherein:
the tank plate includes a through hole on a line connecting the pair of cut portions; and
the partition plate includes an engaging portion to be engaged with the through hole.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014057878 | 2014-03-20 | ||
JP2014-057878 | 2014-03-20 | ||
JP2015-024475 | 2015-02-10 | ||
JP2015024475A JP2015194327A (en) | 2014-03-20 | 2015-02-10 | heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150267972A1 true US20150267972A1 (en) | 2015-09-24 |
Family
ID=54118184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/661,532 Abandoned US20150267972A1 (en) | 2014-03-20 | 2015-03-18 | Heat exchanger |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150267972A1 (en) |
JP (1) | JP2015194327A (en) |
CN (1) | CN104930905A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160238326A1 (en) * | 2015-02-16 | 2016-08-18 | Hanon Systems | Header tank of heat exchanger and heat exchanger having the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6583080B2 (en) * | 2016-03-22 | 2019-10-02 | 株式会社デンソー | Refrigerant evaporator |
CN108954922A (en) * | 2018-08-28 | 2018-12-07 | 珠海格力电器股份有限公司 | A kind of micro-channel heat exchanger and air conditioner |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5586600A (en) * | 1994-10-26 | 1996-12-24 | Valeo Engine Cooling, Inc. | Heat exchanger |
FR2745078A1 (en) * | 1996-02-20 | 1997-08-22 | Valeo Thermique Moteur Sa | Method of making fluid heat exchanger for motor vehicle air conditioning |
US6234238B1 (en) * | 1999-04-23 | 2001-05-22 | Calsonic Kansei Corporation | Aluminum-alloy heat exchanger |
US20050126771A1 (en) * | 2002-03-20 | 2005-06-16 | Behr Lorraine S.A.R.L. | Soldered heat exchanger |
-
2015
- 2015-02-10 JP JP2015024475A patent/JP2015194327A/en not_active Withdrawn
- 2015-03-18 US US14/661,532 patent/US20150267972A1/en not_active Abandoned
- 2015-03-19 CN CN201510122569.XA patent/CN104930905A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5586600A (en) * | 1994-10-26 | 1996-12-24 | Valeo Engine Cooling, Inc. | Heat exchanger |
FR2745078A1 (en) * | 1996-02-20 | 1997-08-22 | Valeo Thermique Moteur Sa | Method of making fluid heat exchanger for motor vehicle air conditioning |
US6234238B1 (en) * | 1999-04-23 | 2001-05-22 | Calsonic Kansei Corporation | Aluminum-alloy heat exchanger |
US20050126771A1 (en) * | 2002-03-20 | 2005-06-16 | Behr Lorraine S.A.R.L. | Soldered heat exchanger |
Non-Patent Citations (1)
Title |
---|
Translation of French Patent Document FR 2745078 A1 entitled TRANSLATION-FR 2745078 A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160238326A1 (en) * | 2015-02-16 | 2016-08-18 | Hanon Systems | Header tank of heat exchanger and heat exchanger having the same |
US10612865B2 (en) * | 2015-02-16 | 2020-04-07 | Hanon Systems | Header tank of heat exchanger and heat exchanger having the same |
Also Published As
Publication number | Publication date |
---|---|
CN104930905A (en) | 2015-09-23 |
JP2015194327A (en) | 2015-11-05 |
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AS | Assignment |
Owner name: CALSONIC KANSEI CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SANNOHE, KOUJI;SOGABE, MASAHIRO;IIZUKA, YOSHIKATSU;AND OTHERS;SIGNING DATES FROM 20150226 TO 20150303;REEL/FRAME:035199/0248 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |