WO2017013918A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- WO2017013918A1 WO2017013918A1 PCT/JP2016/063011 JP2016063011W WO2017013918A1 WO 2017013918 A1 WO2017013918 A1 WO 2017013918A1 JP 2016063011 W JP2016063011 W JP 2016063011W WO 2017013918 A1 WO2017013918 A1 WO 2017013918A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tube
- core plate
- heat exchanger
- width direction
- tubes
- Prior art date
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Classifications
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
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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
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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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
- F28F1/045—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular with assemblies of stacked elements
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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
- F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
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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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/067—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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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
- F28F2225/00—Reinforcing means
- F28F2225/08—Reinforcing means for header boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
-
- 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
- F28F2275/04—Fastening; Joining by brazing
Definitions
- the present disclosure relates to a heat exchanger and is suitable for a radiator that cools cooling water of a water-cooled internal combustion engine.
- a heat exchanger includes a core portion configured by alternately laminating a plurality of tubes and a plurality of corrugated fins, a header tank that is joined to an end portion in a longitudinal direction of the tube, and communicates with the tube.
- the header tank includes a core plate into which a tube is inserted and joined, and a tank main body part that is fixed to the core plate and forms an internal space of the header tank together with the core plate.
- the core plate has a flat surface on the inner side of the header tank, a tube joint portion provided with a tube insertion hole into which a plurality of tubes are inserted, and a groove portion provided outside the tube joint portion to receive the end of the tank main body portion. Is provided.
- Patent Document 1 a portion on the edge side in the tube width direction at the periphery of the tube insertion hole is formed to protrude upward.
- Patent Document 1 attempts to improve the strength on the end side in the width direction of the tube.
- FIG. 12 shows a schematic cross-section of the core plate studied first by the present inventors.
- FIG. 13, FIG. 14 has shown the typical cross section of the core plate which the present inventors examined 2nd.
- Study Example 1 the configuration illustrated in FIG. 12 is referred to as Study Example 1
- Study Example 2 the configuration illustrated in FIGS. 13 and 14 is referred to as Study Example 2.
- the brazing material easily goes around not only between the periphery of the tube insertion hole TBh but also between the opposing wall surfaces of the core plate CP1 and the tube TB. .
- the tube TB and the core plate CP1 may be joined at an unintended position.
- the present inventors have studied a configuration in which the distance between the opposing wall surfaces of the core plate CP2 and the tube TB is increased except for the periphery of the tube insertion hole TBh. Yes. That is, as shown in FIG. 14, a configuration in which an inclined portion Ci is provided between the joint portion Cj of the tube TB in the core plate CP2 and the portion Ct that receives the tank main body portion is examined. According to this, even if the thickness of the tube TB in the width direction WD of the core plate CP2 in the heat exchanger is reduced, it is possible to avoid the tube TB and the core plate CP2 being joined at an unintended position.
- the present inventors investigated the cause of the formation of the depression Cs in the core plate CP2.
- the tube insertion hole TBh is formed in a part of the inclined portion Ci of the core plate CP2 having a thickness larger than that of the tube joint portion Cj, and the tube insertion hole TBh is formed. It was found that the depression Cs was formed by the molding shrinkage.
- This disclosure is intended to provide a heat exchanger that can suppress the occurrence of unintended depressions in the core plate even if the thickness of the core plate in the width direction of the tube is reduced.
- a heat exchanger includes a core portion having a plurality of flat tubes arranged in a stacked manner, a header tank disposed at an end portion in the longitudinal direction of the tubes and communicating with the plurality of tubes. .
- the header tank of the heat exchanger is fixed to the core plate with a plurality of tubes brazed together with the longitudinal ends of the tubes inserted into the tube insertion holes, together with the core plate.
- a tank main body that forms a space communicating with the plurality of tubes.
- the core plate includes a tube joint portion in which a plurality of tube insertion holes are formed, an accommodation receiving portion that surrounds the tube joint portion and accommodates a tip portion close to the core plate in the tank main body portion, and the accommodation receiving portion and the tube joint. And an inclined portion that is inclined with respect to the longitudinal direction of the tube.
- the inclined portion includes a first imaginary line that extends linearly along the inclined portion from the housing receiving portion toward the tube joint portion, and a second imaginary line that extends linearly along the tube joint portion in the cross-sectional major axis direction of the tube.
- the line is provided on the core plate so as to intersect the outside of the tube in the width direction of the tube.
- the width direction of a tube In this case, the inclined portion is formed at a position away from the tube insertion hole. For this reason, it can suppress that a hollow is formed in the peripheral part of the tube insertion hole in a core plate by the shaping
- the heat exchanger of the present disclosure even if the thickness of the tube in the width direction of the tube in the core plate is reduced, it is possible to suppress an unintended depression in the core plate. As a result, when the tube and the core plate are joined by brazing, the brazing material wraps around stably, so that the joining state between the tube and the core plate can be stabilized.
- FIG. 5 is a VV cross-sectional view of FIG. 4.
- FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is sectional drawing which shows the principal part of the core plate of the radiator which concerns on 1st Embodiment. It is explanatory drawing which shows the deformation
- the radiator 1 includes a core portion 10 that is a heat exchange portion that exchanges heat of cooling water of an internal combustion engine (not shown) with outside air.
- the core part 10 is configured by a laminated body in which a plurality of tubes 11 and fins 12 are alternately laminated in the vertical direction.
- the stacking direction of the tubes 11 and the fins 12 is referred to as a tube stacking direction YD.
- Each tube 11 has a flow path through which cooling water of an internal combustion engine (not shown) flows.
- Each tube 11 of the present embodiment is configured in a flat shape so that the longitudinal direction thereof extends along the horizontal direction, and the direction in which the cross section has a long diameter (that is, the cross section long diameter direction) extends along the flow direction of the outside air. Has been.
- the flat shape refers to an elliptical shape composed of a curved shape obtained by combining an arc portion having a large curvature radius and an arc portion having a small curvature radius, an oval shape comprising a shape obtained by combining an arc portion and a flat portion, and the like. It is included.
- the longitudinal direction of the tube 11 is referred to as a tube longitudinal direction XD
- the direction orthogonal to the tube longitudinal direction XD and the tube stacking direction YD is referred to as a tube width direction ZD.
- the tube width direction ZD of the present embodiment is a direction that coincides with the direction in which the tube 11 becomes the major axis (that is, the cross-sectional major axis direction).
- the fin 12 is a member that increases the heat transfer area with the outside air and promotes heat exchange between the outside air and the cooling water.
- the fins 12 of the present embodiment are formed in a corrugated shape and are joined to the flat surfaces on both sides of the tube 11.
- the flat surface used in the present embodiment means a substantially flat state. That is, the flat surface used in the present embodiment includes a state including minute steps, irregularities, and the like that are formed in manufacturing. The same applies to the flat surface of the tube joint portion 211 and the flat surface of the inclined portion 215 described later.
- Each tube 11 and fin 12 of the present embodiment are made of a metal (for example, an aluminum alloy) excellent in thermal conductivity, corrosion resistance, and the like.
- each tube 11, fins 12, a core plate 21 to be described later, and a side plate 40 to be described later are integrally brazed and joined by a brazing material coated at a predetermined position of each member.
- a pair of header tanks 20 and 30 extending in the tube stacking direction YD and having a space formed therein are disposed at both ends of the tube 11 in the tube longitudinal direction XD.
- Each header tank 20 and 30 is joined in a state in which the end portion of each tube 11 in the tube longitudinal direction XD is inserted into a tube insertion hole 211a of the core plate 21 described later.
- the internal passage in each tube 11 communicates with a space formed inside each header tank 20, 30.
- one header tank constitutes an inlet side tank 20 that distributes and supplies high-temperature cooling water flowing out from an internal combustion engine (not shown) to each tube 11.
- the inlet side tank 20 is provided with an inlet pipe 20a connected to the outlet side of the cooling water of the internal combustion engine via a hose (not shown).
- the other header tank constitutes an outlet side tank 30 that collects and collects cooling water cooled by heat exchange with the outside air in the core 10.
- the outlet side tank 30 is provided with an outlet pipe 30a connected to the cooling water inlet side of the internal combustion engine via a hose (not shown).
- Side plates 40 that reinforce the core portion 10 are disposed at both ends of the core portion 10 in the tube stacking direction YD.
- the side plate 40 extends along the tube longitudinal direction XD, and both ends thereof are connected to the header tanks 20 and 30.
- the side plate 40 of the present embodiment is made of a metal such as an aluminum alloy.
- each header tank 20, 30 has a core body 21 that forms an internal space 20 b of each header tank 20, 30 together with the core plate 21 and the core plate 21 that are joined together with the tube 11 inserted. 22 and packing 23.
- the core plate 21 of the present embodiment is made of a metal (for example, an aluminum alloy) excellent in thermal conductivity, corrosion resistance, and the like.
- the tank body 22 of the present embodiment is formed of a resin such as glass reinforced polyamide reinforced with glass fibers.
- the packing 23 is made of elastically deformable rubber.
- the packing 23 may be formed of, for example, silicon rubber or EPDM (that is, ethylene / propylene / diene rubber).
- the tank plate 22 in a state where the packing 23 is sandwiched between the core plate 21 and the tank main body 22, the tank plate 22 is plastically deformed so as to press a protruding piece 213 of the core plate 21 described later against the tank main body 22.
- the main body 22 is caulked and fixed to the core plate 21.
- the core plate 21 has a tube joint portion 211 for joining the tube 11, and a housing receiving portion 212 for housing a flange portion 222 and a packing 23 of the tank main body portion 22 described later around the tube joint portion 211.
- the accommodation receiving part 212 has two wall surfaces and is configured in an L shape. That is, the housing receiving portion 212 is a bottom wall portion 212a extending in the tube width direction ZD when viewed from the tube stacking direction YD, and an outer wall portion bent in an L shape from the bottom wall portion 212a and extending in the tube longitudinal direction XD. 212b. Further, as shown in FIG. 3, a plurality of protruding pieces 213 for caulking are formed at the end of the outer wall portion 212 b of the housing receiving portion 212.
- the tube joining portion 211 has a plurality of tube insertion holes 211a for brazing and joining in a state where the end portions in the tube longitudinal direction XD of each tube 11 are inserted in the tube stacking direction YD. It is formed to line up at intervals.
- FIG. 5 is a diagram showing a cross-sectional shape of the core plate 21 when a portion including the tube insertion hole 211a in the tube joint portion 211 is cut in the tube longitudinal direction XD.
- FIG. 6 is a diagram showing a cross-sectional shape of the core plate 21 when a portion located between the tube insertion holes 211a in the tube joint portion 211 is cut in the tube longitudinal direction XD.
- a burring portion 211 b that protrudes toward the inner space of each header tank 20, 30 is formed in a portion extending in the tube width direction ZD in the peripheral portion of the tube insertion hole 211 a. .
- the burring portion 211 b is provided to increase the rigidity of the peripheral edge portion of the tube insertion hole 211 a in the core plate 21.
- the tube joining portion 211 is located between the adjacent tube insertion holes 211 a, and in the tube width direction ZD of each tube 11, the tube length of each tube 11.
- a rib 214 that is recessed away from the end in the direction XD is formed.
- the ribs 214 are formed so as to overlap the ends of the tubes 11 in the tube width direction ZD in the tube longitudinal direction XD when viewed from the tube stacking direction YD (that is, the direction perpendicular to the paper surface of FIGS. 5 and 6). ing.
- the tube joint portion 211 and the housing receiving portion 212 are connected via an inclined portion 215 that is inclined with respect to the tube longitudinal direction XD.
- part between the tube junction part 211 and the bottom wall part 212a of the accommodating receiving part 212 becomes a stepped shape.
- the inclined portion 215 of the present embodiment is inclined so that the interval with the tube 11 in the tube width direction ZD becomes narrower from the bottom wall portion 212a side of the housing receiving portion 212 toward the tube joint portion 211 side.
- the tube insertion hole 211a overlaps with a part of the inclined portion 215 in the tube longitudinal direction XD, the tube insertion hole 211a has an intention to the peripheral portion of the tube insertion hole 211a. It has been found that dents that are not easily formed.
- the shape of the inclined portion 215 is set so that a part of the inclined portion 215 does not overlap the tube insertion hole 211a in the tube longitudinal direction XD.
- the inclined portion 215 includes a first imaginary line VL ⁇ b> 1 that extends linearly along the inclined portion 215 and a second imaginary line VL ⁇ b> 2 that extends linearly along the tube joint portion 211.
- the inclined portion 215 of the present embodiment is formed on the core plate 21 so that the intersection A between the first virtual line VL1 and the second virtual line VL2 is located outside the tube width direction ZD of the tube 11. Has been.
- the first virtual line VL1 is a straight line extending along the flat surface of the inclined portion 215, and is a straight line indicated by a one-dot chain line in FIG.
- the first virtual line VL ⁇ b> 1 is a straight line extending linearly along the inclined portion 215 from the housing receiving portion 212 toward the tube joint portion 211.
- the flat surface of the inclined portion 215 means that it is in a substantially flat state, and includes a minute step, unevenness or the like that is formed in manufacturing. Also good.
- the second virtual line VL2 is a straight line extending along the flat surface of the tube joint portion 211, and is a straight line indicated by a two-dot chain line in FIG.
- the second imaginary line VL ⁇ b> 2 is a straight line that extends linearly along the tube joint portion 211 in the direction of the long diameter in the cross section of the tube 11 (that is, the cross section long diameter direction).
- the flat surface of the tube joint portion 211 means a substantially flat state, and includes a minute step, unevenness, etc. that are formed in manufacturing. May be.
- the tank body 22 of the present embodiment has a length in the tube width direction ZD shorter than a length in the tube width direction of the tube 11 in order to reduce the thickness of the radiator 1 in the tube width direction ZD. It has the part which becomes. And the bulging part 221 which swelled in the direction away from the tube 11 in the tube width direction ZD is provided in the site
- the tank main body portion 22 of the present embodiment is provided with a flange portion 222 having a thickness larger than that of other portions at a tip portion close to the core plate 21.
- the flange portion 222 is disposed on the receiving portion 212 of the core plate 21 via the packing 23.
- the manufacturing method of the radiator 1 of the present embodiment includes a preparation process, a temporary assembly process, and a brazing joining process.
- a preparation process each component which comprises the radiator 1 is prepared.
- This preparation step includes a step of forming the core plate 21 having the tube joint portion 211, the receiving portion 212, the protruding piece 213, and the rib 214.
- the tube insertion hole 211a is formed on the flat surface of the tube joint portion 211 by punching a plate-shaped metal material (for example, punching).
- the core portion 10 and the like are temporarily assembled by assembling the tube 11, the fins 12, and the side plate 40 prepared in the preparation process in the tube stacking direction YD on the work table.
- the assembled state is maintained by a jig such as a wire.
- the assembly of the state in which the core plate 21 is assembled to the core portion 10 is placed in a heated furnace, so that each element of the core plate 21 and the core portion 10 is brazed. To join.
- the packing 23 is accommodated in the accommodation receiving portion 212 of the core plate 21. Then, in a state in which the flange portion 222 of the tank main body portion 22 is accommodated in the accommodation receiving portion 212 of the core plate 21 in which the packing 23 is accommodated, the projecting pieces 213 of the core plate 21 are plastically deformed by pressing or the like, The tank body 22 is caulked and fixed to the core plate 21.
- the manufacturing of the radiator 1 is completed through inspection processes such as leakage inspection and dimension inspection. In the leakage inspection or the like, it is confirmed whether or not there is a brazing defect or a caulking defect at the joint portion of the radiator 1.
- the radiator 1 of the present embodiment described above has the following effects by having the above-described configuration. That is, the radiator 1 according to the present embodiment is configured to connect the tube joining portion 211 of the core plate 21 and the bottom wall portion 212a of the housing receiving portion 212 via the inclined portion 215. According to this, even if the thickness of the core plate 21 in the radiator 1 in the tube width direction ZD is reduced, the tube 11 and the core plate 21 can be prevented from being joined at an unintended position.
- the first imaginary line VL ⁇ b> 1 extending along the inclined portion 215 and the second imaginary line VL ⁇ b> 2 extending along the tube joint portion 211 are in the tube width direction of the tube 11.
- the inclined portion 215 is formed so as to intersect outside the ZD. According to this, in the tube width direction ZD, the inclined portion 215 is formed at a position away from the tube insertion hole 211a. For this reason, it can suppress that a hollow is formed in the peripheral part of the tube insertion hole 211a in the core plate 21 by the shaping
- the radiator 1 of the present embodiment it is possible to suppress an unintended depression in the core plate 21 even if the thickness of the core plate 21 in the tube width direction ZD is reduced. As a result, when the tube 11 and the core plate 21 are brazed and joined, the brazing material wraps around stably, so that the joined state between the tube 11 and the core plate 21 can be stabilized.
- the core plate 21 may be deformed like a bow due to the tube 11 on the high temperature side extending in the tube longitudinal direction XD. In this case, stress concentrates on the end of the tube 11 in the tube width direction ZD.
- the tube 11 is located between the adjacent tube insertion holes 211a in the core plate 21 and located on the end portion side in the width direction of the tube 11 from the end portion of the tube 11 in the tube longitudinal direction XD.
- a recessed rib 214 is formed.
- the stress concentration generated in the end portion of the tube 11 in the tube width direction ZD is also alleviated by the deformation of the inclined portion 215 located outside the tube width direction ZD around the intersection A. That is, when a temperature difference occurs between the adjacent tubes 11, the stress generated at the end of the tube 11 in the tube width direction ZD is absorbed by the deformation of the inclined portion 215.
- the inventors of the present invention have the stress acting on the end of the tube 11 in the tube width direction ZD at the position of the tube 11 and the intersection A of the first imaginary line VL1 and VL2 in the tube width direction ZD.
- the effective range for reducing concentration was examined.
- FIG. 10 is a diagram showing the examination results of the effective range for reducing the stress concentration acting on the tube root portion Tb with respect to the distance Lta between the tube root portion Tb that is the end portion of the tube 11 in the tube width direction ZD and the intersection A. It is.
- the horizontal axis of FIG. 10 indicates the distance between the tube root portion Tb and the intersection A, that is, the tube intersection distance Lta.
- the vertical axis in FIG. 10 represents the ratio of the generated stress with the stress acting on the tube root portion Tb being 100% when the tube intersection distance Lta is zero.
- the triangular plot in the figure shows the relationship between the tube intersection distance Lta and the generated stress ratio when the inclination angle ⁇ of the inclined portion 215 is 15 °.
- the square plot in the figure shows the relationship between the tube intersection distance Lta and the generated stress ratio when the inclination angle ⁇ of the inclined portion 215 is 20 °.
- the rhombus plot in the figure shows the relationship between the tube intersection point distance Lta and the generated stress ratio when the inclination angle ⁇ of the inclined portion 215 is 40 °.
- the inclination angle ⁇ is an angle formed by the inclined portion 215 and the tube longitudinal direction XD as shown in FIG.
- the distance between the intersection A between the first virtual line VL1 and the second virtual line VL2 and the tube root portion Tb is 0.0-2. It is desirable to provide the core plate 21 so as to be in the range of 4 mm.
- the distance Lta between the tube intersections is in the range of 0.0 to 2.4 mm, the end of the tube 11 in the tube width direction ZD is deformed even if a temperature difference occurs between the adjacent tubes 11. It can be effectively suppressed.
- the ratio of generated stress when the tube intersection distance Lta is 0.0 is 100% or less, but is close to 100%.
- the inclined portion 215 is more preferably provided on the core plate 21 so that the distance Lta between the tube intersections is greater than 0.0 mm and equal to or less than 2.4 mm.
- the generated stress ratio is less than 80%, so that the deformation of the end of the tube 11 in the tube width direction ZD can be reliably suppressed. it can.
- the ratio of generated stress is less than 60%, so that the deformation of the end portion of the tube 11 in the tube width direction ZD can be more reliably suppressed. Can do.
- the flange portion 222 constituting the front end portion of the tank main body portion 22 is configured to be caulked and fixed by the protruding piece 213 of the core plate 21. In such a configuration, there is a concern that stress is concentrated on the end side in the tube width direction ZD of the tube insertion hole 211a when the crimping is fixed.
- FIG. 11 is a cross-sectional view showing the main part of the core plate 21.
- a depression 216 is intentionally provided so that a step is formed between the inclined portion 215 and the tube joint portion 211.
- the recess 216 is provided to form a brazing reservoir for accumulating brazing material between the tube 11 and the inclined portion 215 when the tube 11 and the core plate 21 are joined by brazing.
- the heat exchanger of the present disclosure may be applied to a refrigerant evaporator or refrigerant radiator of a vapor compression refrigeration cycle, an intercooler that cools intake air of an internal combustion engine, or the like.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
本実施形態について図1~図10を参照して説明する。本実施形態では、本開示に係る熱交換器を、車両に搭載された図示しない水冷式の内燃機関を冷却するラジエータ1に適用した例について説明する。 (First embodiment)
The present embodiment will be described with reference to FIGS. This embodiment demonstrates the example which applied the heat exchanger which concerns on this indication to the radiator 1 which cools the water-cooling type internal combustion engine which is mounted in the vehicle which is not shown in figure.
次に、第2実施形態について、図11を参照して説明する。図11は、コアプレート21における要部を示す断面図である。 (Second Embodiment)
Next, a second embodiment will be described with reference to FIG. FIG. 11 is a cross-sectional view showing the main part of the
以上、本開示の実施形態について説明したが、本開示は上述の実施形態に限定されるものではなく、適宜変更が可能である。例えば、以下のように種々変形可能である。 (Other embodiments)
As mentioned above, although embodiment of this indication was described, this indication is not limited to the above-mentioned embodiment, and can change suitably. For example, various modifications are possible as follows.
Claims (5)
- 熱交換器であって、
複数積層配置された扁平形状のチューブ(11)を有するコア部(10)と、
前記チューブの長手方向(XD)の端部に配置され、複数の前記チューブに連通するヘッダタンク(20、30)と、を備え、
前記ヘッダタンクは、
前記チューブにおける長手方向の端部が複数のチューブ挿入穴(211a)に挿入された状態で、前記複数のチューブがろう付け接合されたコアプレート(21)と、
前記コアプレートに固定され、前記コアプレートと共に前記複数のチューブに連通する空間を形成するタンク本体部(22)と、を含んで構成されており、
前記コアプレートは、
前記複数のチューブ挿入穴が形成されたチューブ接合部(211)と、
前記チューブ接合部を囲むと共に、前記タンク本体部における前記コアプレートに近接する先端部(222)を収容する収容受部(212)と、
前記収容受部と前記チューブ接合部とを接続すると共に、前記チューブの長手方向に対して傾斜する傾斜部(215)と、を有しており、
前記傾斜部は、前記収容受部から前記チューブ接合部に向けて前記傾斜部に沿って直線状に延びる第1仮想線(VL1)と、前記チューブの断面長径方向において前記チューブ接合部に沿って直線状に延びる第2仮想線(VL2)とが、前記チューブの幅方向において前記チューブの外側で交差するように、前記コアプレートに設けられている熱交換器。 A heat exchanger,
A core portion (10) having a flat tube (11) arranged in a plurality of layers;
A header tank (20, 30) disposed at an end in the longitudinal direction (XD) of the tube and communicating with the plurality of tubes;
The header tank is
A core plate (21) in which the plurality of tubes are brazed and joined in a state where the longitudinal ends of the tubes are inserted into the plurality of tube insertion holes (211a);
A tank body (22) that is fixed to the core plate and forms a space that communicates with the plurality of tubes together with the core plate.
The core plate is
A tube joint portion (211) in which the plurality of tube insertion holes are formed;
An accommodation receiving portion (212) for enclosing the tube joint portion and accommodating a tip portion (222) in the tank main body portion adjacent to the core plate;
The housing receiving portion and the tube joint portion are connected, and an inclined portion (215) that is inclined with respect to the longitudinal direction of the tube,
The inclined portion includes a first imaginary line (VL1) extending linearly along the inclined portion from the housing receiving portion toward the tube joint portion, and along the tube joint portion in the cross-sectional major axis direction of the tube. The heat exchanger provided in the said core plate so that the 2nd virtual line (VL2) extended linearly may cross | intersect on the outer side of the said tube in the width direction of the said tube. - 前記チューブ接合部には、前記複数のチューブ挿入穴が前記チューブの積層方向に所定の間隔をあけて並ぶように形成されると共に、隣り合う前記チューブ挿入穴の間であって、前記チューブの幅方向の端部側に位置する部位に、前記チューブの長手方向の端部から離れるように窪んだリブ(214)が形成されている請求項1に記載の熱交換器。 In the tube joint portion, the plurality of tube insertion holes are formed so as to be arranged at a predetermined interval in the stacking direction of the tubes, and between the adjacent tube insertion holes, the width of the tube The heat exchanger according to claim 1, wherein a rib (214) that is recessed away from an end portion in the longitudinal direction of the tube is formed at a portion that is located on an end portion side in the direction.
- 前記チューブの積層方向において、前記第1仮想線と前記第2仮想線との交点(A)と、前記チューブの幅方向の端部との距離をチューブ交点間距離(Lta)としたときに、
前記傾斜部は、前記チューブ交点間距離が、0.0~2.4mmの範囲となるように、前記コアプレートに設けられている請求項1または2に記載の熱交換器。 In the tube stacking direction, when the distance between the intersection (A) of the first imaginary line and the second imaginary line and the end in the width direction of the tube is the distance between the tube intersections (Lta),
The heat exchanger according to claim 1 or 2, wherein the inclined portion is provided on the core plate so that a distance between the tube intersections is in a range of 0.0 to 2.4 mm. - 前記チューブの積層方向において、前記第1仮想線と前記第2仮想線との交点(A)と、前記チューブの幅方向の端部との距離をチューブ交点間距離(Lta)としたときに、
前記傾斜部は、前記チューブ交点間距離が、0.0mmより大きく、2.4mm以下の範囲となるように、前記コアプレートに設けられている請求項1または2に記載の熱交換器。 In the tube stacking direction, when the distance between the intersection of the first imaginary line and the second imaginary line (A) and the end of the tube in the width direction is the distance between the tube intersections (Lta),
The heat exchanger according to claim 1 or 2, wherein the inclined portion is provided on the core plate so that a distance between the tube intersections is greater than 0.0 mm and not more than 2.4 mm. - 前記タンク本体部の前記先端部は、前記収容受部に収容された状態で前記コアプレートにカシメ固定されている請求項1ないし4のいずれか1つに記載の熱交換器。 The heat exchanger according to any one of claims 1 to 4, wherein the front end portion of the tank body portion is caulked and fixed to the core plate in a state of being accommodated in the accommodation receiving portion.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/741,826 US20180195805A1 (en) | 2015-07-17 | 2016-04-26 | Heat exchanger |
JP2017529477A JPWO2017013918A1 (en) | 2015-07-17 | 2016-04-26 | Heat exchanger |
CN201680030767.6A CN107636413A (en) | 2015-07-17 | 2016-04-26 | Heat exchanger |
DE112016003219.6T DE112016003219T5 (en) | 2015-07-17 | 2016-04-26 | heat exchangers |
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Application Number | Priority Date | Filing Date | Title |
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JP2015142835 | 2015-07-17 | ||
JP2015-142835 | 2015-07-17 |
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WO2017013918A1 true WO2017013918A1 (en) | 2017-01-26 |
Family
ID=57834258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2016/063011 WO2017013918A1 (en) | 2015-07-17 | 2016-04-26 | Heat exchanger |
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Country | Link |
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US (1) | US20180195805A1 (en) |
JP (1) | JPWO2017013918A1 (en) |
CN (1) | CN107636413A (en) |
DE (1) | DE112016003219T5 (en) |
WO (1) | WO2017013918A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015127631A (en) * | 2013-11-27 | 2015-07-09 | 株式会社デンソー | Heat exchanger |
JP2019066074A (en) * | 2017-09-29 | 2019-04-25 | 株式会社デンソー | Heat exchanger |
US11092389B2 (en) | 2015-10-15 | 2021-08-17 | Denso Corporation | Heat exchanger |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR20200099088A (en) * | 2019-02-13 | 2020-08-21 | 한온시스템 주식회사 | Heat exchanger |
WO2021049505A1 (en) * | 2019-09-13 | 2021-03-18 | 株式会社ティラド | Tank structure of heat exchanger |
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2016
- 2016-04-26 US US15/741,826 patent/US20180195805A1/en not_active Abandoned
- 2016-04-26 JP JP2017529477A patent/JPWO2017013918A1/en active Pending
- 2016-04-26 DE DE112016003219.6T patent/DE112016003219T5/en not_active Ceased
- 2016-04-26 CN CN201680030767.6A patent/CN107636413A/en active Pending
- 2016-04-26 WO PCT/JP2016/063011 patent/WO2017013918A1/en active Application Filing
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US4582127A (en) * | 1982-12-22 | 1986-04-15 | Societe Anonyme Des Usines Chausson | Tube end plate for heat exchanger with tubes and water boxes |
US5664625A (en) * | 1995-12-13 | 1997-09-09 | Valeo Thermique Moteur | Header plates for heat exchangers |
JP2009216151A (en) * | 2008-03-10 | 2009-09-24 | Denso Corp | Sealing structure and heat exchanger using the same |
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Also Published As
Publication number | Publication date |
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US20180195805A1 (en) | 2018-07-12 |
JPWO2017013918A1 (en) | 2017-11-02 |
DE112016003219T5 (en) | 2019-05-09 |
CN107636413A (en) | 2018-01-26 |
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