WO2013150738A1 - チューブ及び該チューブを備えた熱交換器 - Google Patents
チューブ及び該チューブを備えた熱交換器 Download PDFInfo
- Publication number
- WO2013150738A1 WO2013150738A1 PCT/JP2013/001983 JP2013001983W WO2013150738A1 WO 2013150738 A1 WO2013150738 A1 WO 2013150738A1 JP 2013001983 W JP2013001983 W JP 2013001983W WO 2013150738 A1 WO2013150738 A1 WO 2013150738A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- pair
- flat plate
- portions
- end portion
- Prior art date
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0012—Brazing heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/002—Crimping or bending the workpieces at the joining area
-
- 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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
-
- 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
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0084—Condensers
Definitions
- the present disclosure relates to a tube and a heat exchanger including the tube.
- a heat exchanger used in a vehicle air conditioner a core portion in which a plurality of tubes and outer fins are alternately stacked, and a header tank into which an end portion of each tube is inserted through an insertion hole
- a heat exchanger in which the constituent members are brazed to each other for example, Patent Document 1.
- a tube a plate material is bent and the ends of the plate material are crimped to each other, whereby one end of the plate material is formed on the opposite side of the curved end portion, the pair of opposed flat plate portions, and the curved end portion.
- a tube having a flat cross-sectional shape is used, which has a crimped portion that is bent and crimped so as to sandwich the other end portion of the plate member, and an inclined portion that connects the crimped portion and the flat plate portion.
- the present disclosure relates to a tube capable of reducing a brazing failure by narrowing a gap S between a plate material of the tube and an inclined portion of the tube at a caulking portion at a caulking end of a parallel portion of the tube, and the tube
- the heat exchanger which uses is provided.
- the tube is used in a heat exchanger, and a cross section having a flow path inside is a flat shape.
- the tube is connected to the curved end portion obtained by bending the belt-shaped plate member, and is opposed to each other, and a pair of flat plate portions disposed substantially parallel to each other, and the tube is inclined with respect to the pair of flat plate portions.
- a pair of inclined portions extending inwardly from a pair of flat plate portions and a long end portion extending from one of the pair of inclined portions are bent and crimped so as to sandwich a short end portion extending from the other of the pair of inclined portions.
- At least a part of the other inclined portion is larger than the one inclined portion at an inclination angle with respect to the flat plate portion.
- the other inclined portion is a first inclined portion that is larger than the one inclined portion in the inclination angle with respect to the flat plate portion, and a second inclined portion that is substantially equal to the one inclined portion in the inclination angle with respect to the flat plate portion.
- the first slope portion may be disposed between the short end portion and the second slope portion.
- a tapered surface that is inclined along the inclined portion may be provided at a portion of the long end portion that faces the inclined portion.
- the other inclined portion may include an overhanging portion having a curved shape inflated outward.
- the tube is used in a heat exchanger, and a cross section having a flow path inside has a flat shape.
- the tube is connected to the curved end portion obtained by bending the belt-shaped plate member, and is opposed to each other, and a pair of flat plate portions disposed substantially parallel to each other, and the tube is inclined with respect to the pair of flat plate portions.
- a pair of inclined portions extending inwardly from a pair of flat plate portions and a long end portion extending from one of the pair of inclined portions are bent and crimped so as to sandwich a short end portion extending from the other of the pair of inclined portions. Part.
- the bent long end portion extends toward the other inclined portion and is in surface contact with the other inclined portion.
- the distal end surface of the long end portion may be the same as the outer surface of the flat plate portion.
- a core part having the tube described in any of the above aspects, outer fins arranged alternately and stacked with the tube, and an insertion hole through which an end of the tube is inserted are formed. You may have a header tank.
- the gap between the inclined portion of the tube and the end portion of the plate member forming the tube is reduced, the portion between the outer peripheral surface of the tube and the opening edge of the insertion hole is formed at a portion where the gap is formed.
- the gap can also be reduced, and when the tube is inserted into the insertion hole of the header tank, the amount of brazing material flowing into the gap due to capillary action can be reduced, and brazing defects at the root portion of the tube can be suppressed. .
- (A) It is sectional drawing which shows a part of tube of 5th Embodiment of this indication, (b) is sectional drawing which shows the brazing state in the crimping
- (A) is sectional drawing which shows a part of tube of 6th Embodiment of this indication,
- (b) is sectional drawing which shows the brazing state in the crimping part of (a). It is sectional drawing which shows a part of tube of 7th Embodiment of this indication. It is sectional drawing which shows a part of tube of 8th Embodiment of this indication.
- a refrigerant condenser 1 used in a vehicle air conditioner which is an example of a heat exchanger to which the present disclosure is applied, includes a plurality of tubes 10 through which a refrigerant passes and an outer fin. 20 are alternately laminated, the core part 2 that exchanges heat between the refrigerant and the passing air, the header tanks 3 and 4 connected to the end of the tube 10, and the outside of the core part 2 in the lamination direction of the tube 10. And a side plate 25 as a reinforcing member.
- One header tank 3 is provided with an inflow portion 31 through which refrigerant flows from a compressor (not shown) into the header tank 3, and the other header tank 4 flows out of the refrigerant from the header tank 4.
- An outflow portion 32 is provided.
- the tube 10 provided with inner fins 12 is assembled so as to be inserted into insertion holes (not shown) formed in the header tanks 3 and 4, and then integrally brazed in the furnace. Is done.
- the tube 10 is a tubular member having a flat cross-sectional shape, and an inner fin 12 for improving the heat exchange efficiency between the refrigerant and the passing air is disposed therein.
- the tube 10 is formed by bending a substantially central portion in the width direction of a band-shaped aluminum plate material (for example, a plate thickness of 0.15 to 0.3 mm) with a brazing material clad on the surface.
- a band-shaped aluminum plate material for example, a plate thickness of 0.15 to 0.3 mm
- One end in the direction is a curved end portion 11a curved in a substantially arc shape. From the curved end portion 11a, a pair of opposed flat plate portions 11p are provided so as to extend, and a crimping portion 11b is provided on the side opposite to the curved end portion 11a.
- FIG. 3 is a partially enlarged view of part X in FIG.
- the strip-shaped plate material forming the tube main body 11 is bent so that the length from the curved end portion 11a to both end portions of the strip-shaped plate material is different when bent at the curved end portion 11a.
- the flat plate portion 11p is bent so as to be directed inward from the curved end portion 11a at substantially the same length, and inclined portions 11c and 11d are formed.
- the end portion 11e (long end portion) of the longer plate member is formed continuously with the inclined portion 11d, and the end portion 11f (short end portion) of the shorter plate member is formed continuously with the inclined portion 11c.
- the end portion 11e of the longer plate member is bent so as to sandwich the end portion 11f of the shorter plate member and the end portion 15a of the flat portion 15 of the inner fin 12 to form a caulking portion 11b.
- the inclined portion 11c is formed with a protruding portion 11h that is bent so as to protrude outward from the tube body 11 in the vicinity of the portion where the end portion 11e of the plate material faces, and the inclination angle in the vicinity of the end portion 11e of the plate material is It is larger than the inclination angle of the part.
- the inclined portion 11c has a first inclined surface portion 11c1 that is larger than the inclined portion 11d at an inclination angle with respect to the flat plate portion 11p, and a second inclined surface portion 11c2 that is substantially equal to the inclined portion 11d at an inclined angle with respect to the flat plate portion 11p.
- the tip of the end portion 11e of the plate material can be disposed close to the first slope portion 11c1 of the inclined portion 11c, and the gap S between the end portion 11e of the plate material and the inclined portion 11c is reduced. be able to. Therefore, when the header tanks 3 and 4 are assembled, there is no locally large gap between the opening edge of the insertion hole of the header tanks 3 and 4 and the outer peripheral surface of the tube 10, and the tube 10 and the header tank 3. , 4 can suppress the occurrence of poor brazing at the root part.
- the amount of brazing material flowing into the gap S from the crimped portion 11b due to capillary action during brazing decreases, so that the opening edges of the insertion holes of the header tanks 3 and 4 and the outer peripheral surface of the tube 10 It is possible to prevent the amount of brazing material for brazing between the two being insufficient, and to suppress the occurrence of brazing defects. Therefore, it is not necessary to increase the clad amount of the brazing material of the plate material forming the tube 10. In addition, it is also possible not to make the inclined part 11c be a bent shape as the projecting part 11h but to have a shape bulging outward.
- the longitudinal cross-sectional shape of the tube 10 can be made into a substantially line symmetrical shape with respect to the center line CL, and can be assembled into the insertion holes of the header tanks 3 and 4 regardless of the direction of the tube 10.
- the length of the crimping portion 11b can be increased, and deformation of the tube 10 after crimping can be suppressed.
- the inner fin 12 is formed into a wave shape by rolling a thin (for example, 0.05 to 0.25 mm) aluminum strip like the tube main body 11, and flat portions 15 and 16 are provided at both ends. (See FIG. 2).
- the end portion 15 a of the flat portion 15 of the inner fin 12 is caulked at the caulking portion 11 b, and the folded portion 14 of the wavy portion of the inner fin 12 is assembled so as to contact the inner wall surface 13 of the tube body 11.
- the first folded portion 14 continuously formed with the flat portion 15 of the inner fin 12 is continuously formed with the end portion 11f of the plate member sandwiched by the end portion 11e of the bent plate member at the caulking portion 11b.
- the inner fins 12 are assembled to the tube main body 11 so as to come into contact with the flat plate portion 11p.
- the end portion 15a of the flat portion 15 of the inner fin 12 is bent along the inner peripheral shape of the bent portion of the end portion 11e of the plate material, and the inner end portion of the bent portion of the end portion 11f of the plate material and the end portion 11e of the plate material is The gap between the peripheral surface can be reduced. Therefore, at the time of brazing, it is possible to reduce the amount of the caulking portion 11b that flows to the bent portion side of the end portion 11e of the plate material by capillary action, and it is possible to supply a sufficient amount of brazing material to the gap S side. .
- the amount of brazing material clad on the plate material can be reduced by the capillary phenomenon in the caulking portion 11b to the bent portion side of the end portion 11e of the plate material, and a sufficient amount of brazing material is supplied to the gap S side. can do.
- poor brazing between the opening edge of the insertion hole of the header tanks 3 and 4 and the outer peripheral surface of the tube 10 can be suppressed, and poor brazing of the root portion of the tube 10 can be suppressed.
- the longer end portion 11e of the belt-shaped plate material is extended in the direction of the inclined portion 11c, and the end portion 11e is inclined along the inclined portion 11c at a portion facing the inclined portion 11c.
- FIGS. 7A and 7B show a fifth embodiment of the tube 10 used in the heat exchanger of the present disclosure, in which the longer end portion 11e of the strip-shaped plate material is extended in the direction of the inclined portion 11c.
- a tapered surface 11t is provided at a portion of the end portion 11e facing the inclined portion 11c.
- the longer end portion 11e of the strip-shaped plate member is extended in the direction of the inclined portion 11c, and the tapered surface 11t is provided at a portion of the end portion 11e facing the inclined portion 11c.
- the extending length of the end portion 11e can be increased.
- the gap S between the end portion 11e and the inclined portion 11c can be reduced, and the amount of brazing material flowing into the gap S can be reduced in the crimping portion 11b.
- sufficient fillets 52, 53, 54 can be formed.
- the end portion 15a of the flat portion 15 of the inner fin 12 is bent so as to follow the inner peripheral shape of the bent portion of the end portion 11e of the plate material, and the capillary phenomenon occurs in the caulking portion 11b.
- the amount of the end portion 11e of the plate material flowing toward the bent portion can be reduced, and a sufficient amount of brazing material can be supplied to the gap S side.
- poor brazing between the opening edge of the insertion hole of the header tanks 3 and 4 and the outer peripheral surface of the tube 10 can be suppressed, and poor brazing of the root portion of the tube 10 can be suppressed.
- FIG. 8A shows a sixth embodiment of the tube 10 used in the heat exchanger of the present disclosure.
- the end of the flat portion 15 is shown in the fifth embodiment.
- 15a may be a flat plate shape, and a shape that abuts on the inner peripheral surface of the bent portion of the end portion 11e of the plate material may be applied. Therefore, the amount of brazing material clad on the plate material can be reduced by the capillary phenomenon in the caulking portion 11b to the bent portion side of the end portion 11e of the plate material, and a sufficient amount of brazing material is supplied to the gap S side. can do.
- the longer end portion 11e of the belt-like plate material is extended in the direction of the inclined portion 11c, and overlapped with the inclined surface of the inclined portion 11c to form a double inclined surface structure.
- the tip of the fold is bent so that it does not protrude from the extended line of the parallel portion 11p.
- the gap S between the end portion 11e and the inclined portion 11c can be reduced, and the amount of brazing material filling the gap S can be reduced.
- FIG. 10 is an eighth embodiment of the tube 10 used in the heat exchanger of the present disclosure, and the shape of the end portion 15a of the flat portion 15 described in the second embodiment is applied to the seventh embodiment. Yes, even with such a structure, brazing can be improved.
- the tube in which the inner fin is disposed is described.
- the tube may be a flat tube having a flat cross section in which a plate material is bent and ends are caulked and fixed.
- the present disclosure can be applied to a tube that is not provided.
- the header tank in which the header tank is integrally formed is described.
- the header tank is divided into a header plate in which a tube insertion hole is formed and a tank portion that covers the header plate. It can also be applied to a heat exchanger having
- the form applied to the condenser of the vehicle air conditioner has been described.
- the present disclosure can be applied to a refrigerant evaporator, a radiator, and the like, and the heat exchanger to which the present disclosure is applied.
- the application is not limited.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (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
(第1実施形態)
図1に示すように、本開示が適用される熱交換器の1例である、車両用空調装置に用いられる冷媒凝縮器1は、内部を冷媒が通過する複数本のチューブ10と、アウターフィン20とが交互に積層され、冷媒と通過空気とを熱交換させるコア部2と、チューブ10の端部に接続されるヘッダタンク3、4と、チューブ10の積層方向においてコア部2の外側に配される補強部材であるサイドプレート25とを有している。一方のヘッダタンク3には、冷媒を圧縮機(図示せず)からヘッダタンク3内部へと流入させる流入部31が設けられており、他方のヘッダタンク4には、ヘッダタンク4から冷媒を流出させる流出部32が設けられている。
(第2実施形態)
上述した第1実施形態では、インナーフィン12の平坦部15の端部15aを折り曲げた形状としたが、図4に示すように、インナーフィン12の平坦部15の端部15aを平板形状とし、板材の端部11eの折り曲げ部の内周面に当接する形状としても良い。このような形状とすることで、充填する必要のある隙間を小さくすることができる。
(第3実施形態)
図5に示すように、帯状板材の長い方の端部11eを傾斜部11c方向に延伸すると共に、端部11eの、傾斜部11cとの対向する部位に、傾斜部11cに沿うように傾斜したテーパ面11tを設けた構造としても良い。テーパ面11tを設けることによって、端部11eをより傾斜部11cに近接させることができる。その結果、第1の実施の形態に比べて、端部11eと傾斜部11cとの間に形成される隙間Sを更に小さくすることができ、ヘッダタンク3、4の挿通穴の開口縁と、チューブ10の外周面との間のろう付け不良を抑制することができ、チューブ10の根付部のろう付け不良を抑制することができる。
(第4実施形態)
図6に示す第4実施形態では、第2実施形態において述べたインナーフィン12の平坦部15の端部15aの形状と、第3実施形態において述べたテーパ面11tを設けた端部11eの構造とを組み合わせた形状としても同様の効果を得ることができる。
(第5実施形態)
図7(a)、(b)は、本開示の熱交換器に使用されるチューブ10の第5実施形態を示すものであり、帯状板材の長い方の端部11eを傾斜部11c方向に延伸すると共に、端部11eの傾斜部11cとの対向部にテーパ面11tを設けている。
(第6実施形態)
図8(a)は、本開示の熱交換器に使用されるチューブ10の第6実施形態を示すものであり、第5実施形態に、第2実施形態と同様に、平坦部15の端部15aを平板形状とし、板材の端部11eの折り曲げ部の内周面に当接する形状を適用しても良い。そのため、板材にクラッドされたろう材が、カシメ部11bにおいて毛細管現象によって板材の端部11eの折り曲げ部側へと流れる量を減らすことができ、隙間S側へと充分な量のろう材量を供給することができる。その結果、ヘッダタンク3、4の挿通穴の開口縁と、チューブ10の外周面との間のろう付け不良を抑制することができ、チューブ10の根付部のろう付け不良を抑制することができる。
(第7実施形態)
第7実施形態では、図9に示すように、帯状板材の長い方の端部11eを傾斜部11c方向に延伸して、傾斜部11cの斜面に重ね合わせて二重斜面構造とし、端部11eの先端部は折り曲げ、平行部11pの延長線からはみ出ないようにしている。この結果、端部11eと傾斜部11cとの間の隙間Sを縮小することができ、隙間Sに充填するろう材の量を低減することができる。そして、少量のろう材で隙間Sをろう付けすることにより、チューブ10の根付部のろう付け品質を向上させることができる。
(第8実施形態)
図10は、本開示の熱交換器に使用されるチューブ10の第8実施形態であり、第7実施形態に第2実施形態で述べた平坦部15の端部15aの形状を適用したものであり、このような構造としてもろう付け性を向上させることができる。
Claims (7)
- 熱交換器に使用され、内部に流路を備える断面が扁平形状のチューブであって、
帯状の板材を湾曲した湾曲端部(11a)と、
前記湾曲端部(11a)と接続され、お互いに対向して略平行に配置される一対の平板部(11p)と、
前記一対の平板部(11p)に対して傾斜するように、前記一対の平板部(11p)から内方に向けて延びる一対の傾斜部(11c、11d)と、
前記一対の傾斜部(11c、11d)の一方(11d)から延びる長端部(11e)を折り曲げて、前記一対の傾斜部(11c、11d)の他方(11c)から延びる短端部(11f)を挟み込むようにかしめたカシメ部(11b)と、を有し、
前記他方の傾斜部(11c)の少なくとも一部は、前記平板部(11p)に対する傾斜角度において、前記一方の傾斜部(11d)よりも大きくなっているチューブ。 - 前記他方の傾斜部(11c)は、前記平板部(11p)に対する傾斜角度において前記一方の傾斜部(11d)よりも大きくなる第1斜面部(11c1)と、前記平板部(11p)に対する傾斜角度において前記一方の傾斜部(11d)とほぼ等しくなる第2斜面部(11c2)とを有し、
前記第1斜面部(11c1)は前記短端部(11f)と前記第2斜面部(11c2)との間に配置されている請求項1に記載のチューブ。 - 前記長端部(11e)の、前記傾斜部(11c)との対向する部位に、前記傾斜部(11c)に沿うように傾斜したテーパ面(11t)を設けた請求項1または2に記載のチューブ。
- 前記他方の傾斜部(11c)は、外方へと膨らませた湾曲形状を有する張り出し部(11h)を有する請求項1から3の何れか1項に記載のチューブ。
- 熱交換器に使用され、内部に流路を備える断面が扁平形状のチューブであって、
帯状の板材を湾曲した湾曲端部(11a)と、
前記湾曲端部(11a)と接続され、お互いに対向して略平行に配置される一対の平板部(11p)と、
前記一対の平板部(11p)に対して傾斜するように、前記一対の平板部(11p)から内方に向けて延びる一対の傾斜部(11c、11d)と、
前記一対の傾斜部(11c、11d)の一方(11d)から延びる長端部(11e)を折り曲げて、前記一対の傾斜部(11c、11d)の他方(11c)から延びる短端部(11f)を挟み込むようにかしめたカシメ部(11b)と、を有し、
前記折れ曲がった長端部(11e)は、前記他方の傾斜部(11c)に向けて延びて、前記他方の傾斜部(11c)と面接触しているチューブ。 - 前記長端部(11e)の先端面が、前記平板部(11p)の外面と同一面となる請求項5に記載のチューブ。
- 請求項1から6の何れか1項に記載の複数本チューブと、
前記チューブと交互に積層配置されたアウターフィン(20)とを有するコア部(2)と、
前記チューブの端部が挿通される挿通穴が形成されたヘッダタンク(3、4)とを有する熱交換器。
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US14/390,334 US9726439B2 (en) | 2012-04-04 | 2013-03-25 | Tube and heat exchanger provided with tube |
CN201380017132.9A CN104220202B (zh) | 2012-04-04 | 2013-03-25 | 管以及具备该管的热交换器 |
DE112013001917.5T DE112013001917B4 (de) | 2012-04-04 | 2013-03-25 | Rohr und Wärmetauscher, der mit dem Rohr versehen ist |
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JP6631409B2 (ja) * | 2016-05-23 | 2020-01-15 | 株式会社デンソー | 熱交換器 |
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CN111989530A (zh) * | 2018-04-26 | 2020-11-24 | 三菱电机株式会社 | 热交换元件、热交换换气装置及热交换元件的制造方法 |
CN211178097U (zh) * | 2019-11-05 | 2020-08-04 | 杭州三花微通道换热器有限公司 | 换热管和换热器 |
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