WO2011148786A1 - 熱交換器用チューブ、熱交換器及び熱交換器用チューブの製造方法 - Google Patents
熱交換器用チューブ、熱交換器及び熱交換器用チューブの製造方法 Download PDFInfo
- Publication number
- WO2011148786A1 WO2011148786A1 PCT/JP2011/060833 JP2011060833W WO2011148786A1 WO 2011148786 A1 WO2011148786 A1 WO 2011148786A1 JP 2011060833 W JP2011060833 W JP 2011060833W WO 2011148786 A1 WO2011148786 A1 WO 2011148786A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tube
- heat exchanger
- portions
- refrigerant
- width direction
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title description 9
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- 238000005219 brazing Methods 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000003780 insertion Methods 0.000 description 15
- 230000037431 insertion Effects 0.000 description 15
- 230000007547 defect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/10—Making finned tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
-
- 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
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
-
- 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
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- 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
- F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/08—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes pressed; stamped; deep-drawn
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49391—Tube making or reforming
Definitions
- the present invention relates to a heat exchanger, and more particularly to a tube structure and a manufacturing method in the heat exchanger.
- heat exchangers are used for air conditioners, for example.
- the air conditioner includes, for example, an indoor heat exchanger and an outdoor heat exchanger.
- the indoor heat exchanger In the cooling operation, the indoor heat exchanger is used.
- the outdoor heat exchanger In the heating operation, the outdoor heat exchanger is condensed with condensed water. Is known to occur. Condensed water tends to stay between the tubes and fins of the heat exchanger, which not only obstructs the flow of air and decreases the efficiency of heat exchange, but also prevents it from being received in the outdoor heat exchanger during heating operation. It also causes frost.
- Patent Document 1 in order to drain the condensed water staying in the heat exchanger, a slanted portion and a curved portion are provided between the heat exchange pipe portions (flat tubes) arranged in the vertical direction.
- wire for drainage extended in a longitudinal direction is described in the corrugated fin side plane part of a heat exchange pipe part.
- the condensed water generated by condensation on the surfaces of the flat heat transfer tubes and the corrugated fins is surely guided downward from the drainage recesses formed on the flat portion of the heat exchange tube. It is considered to be.
- the recess provided in the flat part of the heat exchange pipe part has an airtightness between the heat exchange pipe part and the header tank. It is formed only in the range excluding the end of the heat exchange tube so as not to be hindered. In this case, if the end portion of the heat exchange pipe portion in which no recess is formed is accurately inserted into the insertion hole of the header tank, it is considered that brazing is performed so that the airtightness is not hindered as described above. .
- This invention makes it an example of a subject to solve the above problems, the tube for heat exchangers and the heat exchanger which improved the drainage of the tube and the fin, suppressing the brazing defect, and It aims at providing these manufacturing methods.
- the heat exchanger tube used in the heat exchanger tube according to the present invention and the heat exchanger according to the present invention is a heat exchanger tube in which a refrigerant is circulated and formed in a flat plate shape, Steps are provided at both end portions in the refrigerant flow direction, and the length in the width direction on the end side of the step portion is smaller than the length in the width direction between the two step portions.
- a drainage part is provided at a predetermined position between the parts along the flow direction of the refrigerant. Further, the length in the width direction on the end side with respect to the position of the stepped portion is formed so as to become smaller toward the end portion.
- the manufacturing method of the tube for heat exchangers by this invention WHEREIN: With respect to the tube for heat exchangers in which the drainage part was formed in the flow direction of a refrigerant
- the portion formed at both end portions in the flow direction is formed flat and is press formed so that the width of the flat formed portion is smaller than the width between both end portions. .
- the present invention it is possible to provide a heat exchanger tube and a heat exchanger that improve the drainage performance of the tube and fins while suppressing poor brazing, and a method for manufacturing them.
- FIG. 1 It is a front schematic diagram of the heat exchanger which concerns on one embodiment of this invention.
- A It is a perspective view of the tube in the heat exchanger which concerns on one embodiment of this invention.
- B It is an end view in the longitudinal direction of the tube.
- C It is AA sectional drawing in (a). It is a perspective view of the tube before a process of the heat exchanger which concerns on one embodiment of this invention.
- A It is a schematic diagram which shows the process of the manufacturing method of a tube.
- B It is a schematic diagram which shows the process of the manufacturing method of a tube.
- C It is a schematic diagram which shows the process of the manufacturing method of a tube.
- D It is a schematic diagram which shows the process of the manufacturing method of a tube.
- (A) It is a perspective view of the tube in the heat exchanger which concerns on other embodiment of this invention.
- (B) It is BB sectional drawing in (a). It is a perspective view of the tube before a process of the heat exchanger which concerns on other embodiment of this invention. It is a block diagram which shows an example of the air conditioning apparatus provided with the heat exchanger.
- the heat exchanger 100 is configured such that a plurality of tubes 110 through which a refrigerant flows are arranged in parallel, and fins 120 are joined between adjacent tubes 110 by brazing.
- hollow header tanks 130 and 135 are communicated with both ends of the plurality of tubes 110 in the longitudinal direction (circulation direction of the refrigerant), respectively, and the header tank 130 provided on the upper side has a refrigerant on one end side.
- the inlet portion 130a is provided with a refrigerant outlet portion 130b on the other end side, and a partition plate 131 is provided in the center to isolate the inside.
- the refrigerant flowing from the inlet portion 130a of the header tank 130 flows through the tubes 110 (two on the left side in FIG. 1) connected to the inlet portion 130a side of the partition plate 131 and is provided on the lower side. It flows into the header tank 135.
- the tubes 110 (two on the right side in FIG. 1) communicated from the header tank 135 to the outlet portion 130 b side with respect to the partition plate circulate and flow out of the outlet portion 130 b through the header tank 130.
- FIG. 1 schematically shows the heat exchanger 100 and is simplified for the sake of simplicity.
- the fin 120 is a so-called corrugated fin, and a flat portion 121 having a flat plate shape and a bent portion 122 bent at a predetermined curvature radius are alternately arranged in a longitudinal direction by a metal such as aluminum having high thermal conductivity. It is formed and configured.
- the bent portion 122 is a portion that is bonded to the flat surface 115 of the tube 110, and is bonded to the first bent portion 122 a that is bonded to the flat surface 115 of the opposite one tube 110 and the flat surface 115 of the other opposite tube 110. It consists of the 2nd bending part 122b (refer FIG. 1).
- the flat portion 121 is provided smoothly and continuously on the bent portion 122 (122a, 122b) having a cross-sectional shape formed in a semicircular arc shape, whereby the adjacent flat portions 121 are mutually connected. It is parallel. Further, when joined to the tube 110, the flat portion 121 is perpendicular to the longitudinal direction of the tube 110.
- the tube 110 is formed in a hollow flat plate shape with a metal such as aluminum having high thermal conductivity.
- a plurality of partition portions 113 are provided in the inner space so that a plurality of refrigerant flow paths 111 extending in the longitudinal direction are arranged in the width direction (short direction).
- the plurality of tubes 110 are evenly arranged at predetermined intervals so that the flat surfaces 115 face each other, and the fins 120 are joined to the flat surfaces 115 facing the adjacent tubes 110. It is supposed to be.
- Both ends 110a and 110b in the longitudinal direction of the tube 110 are inserted into insertion holes provided in the header tanks 130 and 135 and brazed. The insertion opening is provided in accordance with the shape of both end portions 110a and 110b of the tube 110.
- a stepped portion 117 is provided on one end side (end portion 110a side) of the refrigerant flow direction (longitudinal direction), and on the other end side (end portion 110b side).
- Stepped portions 118 are respectively formed.
- the length in the width direction on one end side (the end portion 110a side) further than the position of the step portion 117 is smaller than the length in the width direction between the step portion 117 and the step portion 118 by as much as the step portion 117. (See FIGS. 2A and 2B).
- the length in the width direction on the other end side (end portion 110b side) further than the position of the step portion 118 is greater than the length in the width direction between the step portion 117 and the step portion 118. It is getting smaller.
- the outer shapes of the end portions 110a and 110b further than the positions of the step portions 117 and 118 are a straight portion 114 formed by the flat surfaces 115 and 115, and a semicircular arc shaped portion 116 formed at both ends of the straight portion 114, respectively. 116 and a simple shape formed by the It should be noted that the length in the width direction on the end side further from the position of each stepped portion 117, 118 is tapered in plan view so as to become smaller from the position of each stepped portion 117, 118 toward the end side. You may form in a shape.
- a drainage portion 119 is provided at a predetermined position along the refrigerant flow direction.
- step portions 117 and 118 are provided at predetermined positions of both end portions 110 a and 110 b in the refrigerant flow direction, and a groove-shaped drainage portion 119 is formed between the step portions 117 and 118.
- both ends of the tube 110 in the width direction are semicircular arc portions 112 formed in a semicircular arc shape, and the drainage portion 119 has the semicircular arc portion 112 and a flat surface 115. It is arranged at the boundary.
- the drainage part 119 in the tube 110, even if the fin 120 is joined to the tube 110, the drainage part 119 is not blocked by the fin 120. Thereby, the condensed water staying in the fin 120 or between the fin 120 and the tube 110 is discharged downward through the drainage part 119.
- the tube 110 is inserted into the header tanks 130, 135 and brazed. It is difficult for brazing defects to occur.
- the width of the insertion hole of the tube 110 provided in the header tanks 130 and 135 is set in accordance with the width on the end side further than the positions of the stepped portions 117 and 118 of the tube 110, so that a predetermined position (step When the tube 110 is inserted up to the positions of the portions 117 and 118, the stepped portion comes into contact with the insertion hole and cannot be inserted any more. Thereby, the drainage part 119 and the insertion port do not overlap, and it is difficult for brazing defects to occur.
- the width of the tube 110 is processed so as to become narrower from the position of each stepped portion 117, 118 toward the end side, the end portion of the tube 110 is inserted into the insertion port of the header tank 130, 135. It becomes easy to be done.
- the tube 140 before processing shown in FIG. 3 is formed by, for example, extrusion molding, a linear portion 144 whose outer shape is formed by flat surfaces 145 and 145, and semicircular arc-shaped portions 142 and 142 formed at both ends of the linear portion 144. Further, a drainage portion 149 is formed across the entire length in the boundary between the semicircular arc-shaped portion 142 and the flat surface 145. In addition, the distance (length in the width direction) from one semicircular arc shaped part 142 to the other semicircular arc shaped part 142 is the length in the width direction between the stepped part 117 and the stepped part 118 of the tube 110. Yes.
- Such a pre-processing tube 140 is fixed to a press molding machine, and a predetermined region on both end portions 140a and 140b side in the length direction is further on the end portions 110a and 110b side than the position of each stepped portion 117 and 118.
- a pair of molds 150 and 150 having recesses corresponding to the outer shape are pressed from the width direction (FIGS. 4A and 4B).
- the drainage portion 149 is crushed and formed flat in a predetermined region on both end portions 140a, 140b side of the pre-processing tube 140, and the predetermined region of the semicircular arc portion 142 becomes the semicircular arc portion 116 ( FIG. 4 (c)).
- the pre-processed tube formed in this way is removed from the mold to become the tube 110 (FIG. 4D).
- FIG. 5 shows a tube 210 of the heat exchanger 200 according to the second embodiment.
- the tube 210 according to the second embodiment shown in FIG. 5 has a configuration in which the tube 210 having a structure different from that of the first embodiment is provided to the tube 110 in the heat exchanger 100 according to the first embodiment. Descriptions other than the tube 210 are omitted.
- a plurality of partition portions 213 are provided so that a plurality of refrigerant flow paths 211 extending in the longitudinal direction are arranged in parallel in the short direction (width direction).
- a step portion 217 is provided on one end side (end portion 210a side) of the refrigerant flow direction (longitudinal direction), and on the other end side (end portion 210b side). Step portions 218 are respectively formed. Further, the length in the width direction on one end side (the end portion 210a side) further than the position of the step portion 217 is formed to be smaller than the length in the width direction between the step portion 217 and the step portion 218. Similarly, the length in the width direction on the other end side (end portion 210b side) further than the position of the step portion 218 is formed to be smaller than the length in the width direction between the step portion 217 and the step portion 218. Yes.
- the outer shapes of the end portions 210a and 210b further than the positions of the step portions 217 and 218 are linear portions 214 formed by planes 215 and 215, and semicircular arc portions 216 formed at both ends of the straight portions 214, respectively. It is a simple shape formed by. Further, the length in the width direction on the side of the end portions 210a and 210b further from the position of the step portions 217 and 218 becomes smaller from the position of the step portions 217 and 218 toward the end portions 210a and 210b, respectively. (It cannot be recognized from the drawings) The end portions 210a and 210b of the tube 210 are easily inserted into the insertion ports of the header tanks 130 and 135.
- a drainage portion 219 is provided at a predetermined position along the refrigerant flow direction.
- step portions 217 and 218 are provided at predetermined positions on both ends in the refrigerant flow direction, and the refrigerant flow direction is provided between the step portions 217 and 218.
- a notch-shaped drainage part 219 which is continuous along is formed.
- the outer shape in the width direction of the drainage part 219 is formed in a semicircular arc shape (semicircular arc part 212), which has a smaller radius of curvature than the radius of curvature of the semicircular arc part 216 on the end side. ing.
- the drainage portion 219 is formed in the tube 210, so that even if the fin 220 is joined to the tube 210, the drainage portion 219 is not blocked by the fin 120. Thereby, the condensed water staying in the fin 120 or between the fin 120 and the tube 210 is discharged downward through the drainage part 219.
- the drainage part 219 is not formed in the edge part 210a, 210b side further than the position of each step part 217,218, it has a simple shape, Therefore The tube 210 is inserted in the header tanks 130,135. Thus, it is difficult for brazing defects to occur when brazing.
- the width of the insertion hole of the tube 210 provided in the header tanks 130 and 135 is provided in accordance with the width on the end side further than the positions of the step portions 217 and 218 of the tube 210, the predetermined position (step portion When the tube 210 is inserted up to the positions 217 and 218), the stepped portion comes into contact with the insertion hole and cannot be inserted any more. Thereby, the drainage part 219 and the insertion port do not overlap, and it is difficult for brazing defects to occur.
- the manufacturing method of the tube 210 is the same as that of the tube 210 in the first embodiment, and is performed by press-molding the pre-processing tube 240 shown in FIG.
- the pre-processing tube 240 is formed by a straight portion whose outer shape is formed by the flat surfaces 245 and 245 and semicircular arc portions 242 and 242 formed at both ends of the straight portion.
- the radius of curvature of the semicircular arc-shaped portion 242 is formed to be smaller than half the thickness of the tube before processing, and the boundary between the semicircular arc-shaped portion 242 and the flat surface 245 becomes a notch 249 that is continuous over the entire length direction.
- the distance from one semicircular arc portion 242 to the other semicircular arc portion 242 is the length in the width direction between the step portion 217 and the step portion 218 of the tube 210.
- FIG. 1 An example in which the heat exchangers (100, 200) exemplified in the first and second embodiments are used, for example, FIG.
- the air conditioner 1 uses a so-called heat pump cycle, and the four-way valve 13 switches the refrigerant flow from the compressor 11 to the vehicle exterior heat exchanger 100A and the vehicle interior heat exchanger 100B. The heating is switched.
- the heat exchanger 100A and the heat exchanger 100B correspond to either the heat exchanger 100 or 200, and are described here as corresponding to the heat exchanger 100 in the first embodiment.
- a four-way valve 13 is connected to the discharge port 11 a of the compressor 11.
- the compressor 11, the in-vehicle heat exchanger 100B, and the in-vehicle heat exchanger 100A are discharged from the compressor 11 when the four-way valve 13 is in the connected state indicated by the broken line (heating operation).
- the refrigerant flows into the in-vehicle heat exchanger 100B, the refrigerant that has passed through the in-vehicle heat exchanger 100B flows into the in-vehicle heat exchanger 100A through the expansion valve 15, and further through the four-way valve 13.
- the compressor 11 is connected so as to return to the suction port 11b.
- the refrigerant discharged from the compressor 11 flows into the heat exchanger 100A for the outside of the vehicle and passes through the heat exchanger 100A for the outside of the vehicle.
- the refrigerant flows into the in-vehicle heat exchanger 100B through the expansion valve 15 and is further connected to return to the suction port 11b of the compressor 11 through the four-way valve 13.
- a cooling fan 17 is attached to the heat exchanger 100A for the outside of the vehicle.
- an intake air switching damper 21 and a blower 23 are provided upstream of the ventilation duct 20 provided with the heat exchanger 100B. Further, a heater unit 25 for heating assistance is provided on the downstream side of the ventilation duct 20, and the amount of air passing through the heater unit 25 is adjusted by a damper 27 for switching exhaust air.
- the outlets 29a, 29b, and 29c of the ventilation duct 20 are for DEF, FACE, and FOOT, respectively, and the amount of air from the outlets 29a, 29b, and 29c is adjusted by dampers 30a, 30b, and 30c provided respectively. It is possible.
- a drainage part may be formed only in the one end side of the width direction of a tube.
- the heat exchanger is installed so that air is blown by the fan from the side where the drainage part is provided. It is preferable to configure.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
また、段部の位置よりも端部側における幅方向の長さは、端部に向かうにつれて小となるように形成されていることを特徴とする。
また、本発明による熱交換器用チューブの製造方法は、幅方向の少なくとも一方の側端部に冷媒の流通方向に沿って排水部が形成された熱交換器用チューブに対して、排水部のうち冷媒の流通方向の両側端部に形成されている部分を平坦に成形するとともに、該平坦に成形された部分の幅が両側端部間の幅より小となるようにプレス成形することを特徴とする。
(実施の形態1)
図1に示すように、熱交換器100は、冷媒が流通する複数のチューブ110が並設され、隣接するチューブ110間にフィン120がロウ付けによって接合されて構成されている。図示例において、複数のチューブ110の長手方向(冷媒の流通方向)の両端にはそれぞれ中空のヘッダタンク130,135が連通されており、上部側に設けられたヘッダタンク130は、一端側に冷媒の入口部130aが、他端側に冷媒の出口部130bが設けられ、中央には内部を隔絶する仕切板131が設けられている。これにより、ヘッダタンク130の入口部130aから流入した冷媒は、仕切板131よりも入口部130a側に連通されたチューブ110(図1において左側の2本)を流通して下部側に設けられたヘッダタンク135に流入する。そして、該ヘッダタンク135から仕切板よりも出口部130b側に連通されたチューブ110(図1において右側の2本)を流通して、ヘッダタンク130を介して出口部130bから流出する。なお、図1は熱交換器100を模式的に表したものであり、説明の簡単のために簡略化されているものである。
図5に実施の形態2による熱交換器200のチューブ210を示す。なお、図5に示す実施の形態2によるチューブ210は、実施の形態1による熱交換器100におけるチューブ110に対して実施の形態1とは異なる構造のチューブ210が設けられた構成を有するため、チューブ210以外の説明を省略する。
上記実施の形態1及び2に例示した熱交換器(100,200)が使用される一例として、例えば電気自動車等に設けられる空気調和装置1の全体の構成図を図7に示す。この空気調和装置1はいわゆるヒートポンプサイクルを利用したものであり、車外用の熱交換器100A及び車内用の熱交換器100Bに対する圧縮機11からの冷媒の流れを四方弁13によって切り替えることで冷房と暖房の切換を行うものである。なお、熱交換器100A及び熱交換器100Bは、熱交換器100及び200のいずれかに対応するものであり、ここでは、実施の形態1における熱交換器100に対応するものとして説明する。
110 チューブ(熱交換器用チューブ)
110a 端部
110b 端部
117 段部
118 段部
119 排水部
120 フィン
Claims (4)
- 扁平板状に形成され冷媒が流通する熱交換器用チューブであって、
冷媒の流通方向の両側端部にはそれぞれ段部が設けられ、該段部の位置よりも端部側における幅方向の長さは両段部間における幅方向の長さより小であり、
両段部間の所定位置には冷媒の流通方向に沿って排水部が設けられていることを特徴とする熱交換器用チューブ。 - 段部の位置よりも端部側における幅方向の長さは、端部に向かうにつれて小となるように形成されていることを特徴とする請求項1記載の熱交換器用チューブ。
- 請求項1又は2記載の熱交換器用チューブを備えていることを特徴とする熱交換器。
- 幅方向の少なくとも一方の側端部に冷媒の流通方向に沿って排水部が形成された熱交換器用チューブに対して、排水部のうち冷媒の流通方向の両側端部に形成されている部分を平坦に成形するとともに、該平坦に成形された部分の幅が両側端部間の幅より小となるようにプレス成形することを特徴とする熱交換器用チューブの製造方法。
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US13/700,024 US20130068437A1 (en) | 2010-05-24 | 2011-05-11 | Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger |
CN2011800240207A CN102893118A (zh) | 2010-05-24 | 2011-05-11 | 热交换器用管件、热交换器以及热交换器用管件的制造方法 |
DE112011101772T DE112011101772T5 (de) | 2010-05-24 | 2011-05-11 | Kanal für einen Wärmetauscher, Wärmetauscher und Verfahren zum Herstellen eines Kanals für einen Wärmetauscher |
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JP2010118199A JP5517745B2 (ja) | 2010-05-24 | 2010-05-24 | 熱交換器用チューブ及び熱交換器 |
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DE112011101772T5 (de) | 2013-03-07 |
JP5517745B2 (ja) | 2014-06-11 |
CN102893118A (zh) | 2013-01-23 |
US20130068437A1 (en) | 2013-03-21 |
JP2011247449A (ja) | 2011-12-08 |
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