WO2022041250A1 - 换热器和换热器的加工方法 - Google Patents

换热器和换热器的加工方法 Download PDF

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Publication number
WO2022041250A1
WO2022041250A1 PCT/CN2020/112685 CN2020112685W WO2022041250A1 WO 2022041250 A1 WO2022041250 A1 WO 2022041250A1 CN 2020112685 W CN2020112685 W CN 2020112685W WO 2022041250 A1 WO2022041250 A1 WO 2022041250A1
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WO
WIPO (PCT)
Prior art keywords
section
heat exchange
tube
bent
length direction
Prior art date
Application number
PCT/CN2020/112685
Other languages
English (en)
French (fr)
Inventor
汪峰
蒋建龙
高强
Original Assignee
杭州三花微通道换热器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州三花微通道换热器有限公司 filed Critical 杭州三花微通道换热器有限公司
Priority to EP20950919.9A priority Critical patent/EP4206598A4/en
Priority to PCT/CN2020/112685 priority patent/WO2022041250A1/zh
Priority to US18/043,149 priority patent/US20230314085A1/en
Priority to CN202090001028.6U priority patent/CN218097305U/zh
Publication of WO2022041250A1 publication Critical patent/WO2022041250A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • 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
    • F28D7/16—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 the conduits being arranged in parallel spaced relation
    • F28D7/163—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 the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0471—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 bent, e.g. in a serpentine or zig-zag the conduits having a non-circular 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0475—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 bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
    • F28D1/0476—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 bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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

Definitions

  • the embodiments of the present application relate to the technical field of air-conditioning heat exchange, and in particular, to a heat exchanger and a method for processing the heat exchanger.
  • the multi-channel heat exchanger includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes include bent sections, and no fins are provided in the bent sections.
  • the bending section part of the pipe sections of the adjacent bending sections in the thickness direction of the heat exchange tube overlap each other.
  • the heat exchanger is manufactured or installed. During the bending process, the overlapping tube sections of adjacent heat exchange tubes may rub against each other, reducing the reliability of the heat exchange tubes.
  • an embodiment of an aspect of the present application provides a heat exchanger, which reduces the risk of friction between adjacent curved sections during the bending operation of the heat exchanger, and reduces the friction when the heat exchanger is used.
  • the accumulation of ash and water is conducive to improving the reliability of the heat exchange tube.
  • An embodiment of another aspect of the present application also provides a processing method of a heat exchanger.
  • a heat exchanger includes: a first tube and a second tube; a plurality of heat exchange tubes, the plurality of heat exchange tubes are arranged at intervals along the length direction of the first tube, so The heat exchange tube communicates with the first tube and the second tube, the heat exchange tube is flat, and the heat exchange tube includes a first surface and a second surface arranged along the thickness direction of the heat exchange tube, so The heat exchange tube includes a third surface and a fourth surface arranged along the width direction of the heat exchange tube, the intersection of the first surface and the third surface is a first side, and the heat exchange tube includes a first side.
  • One end of the transition section is connected, and the other end of the other transition section is connected with one end of the second section; before the bending section, the definition is parallel to the length direction of the first tube and parallel to the first tube.
  • the length direction of a section, and the plane perpendicular to the width direction of the first section is the first plane, and in the first plane, the projection of the first side of the protruding section of the heat exchange tube
  • the line is not collinear with the projection line of the first side edge of the first section of the heat exchange tube, and the projection line of the first side edge of the protruding section of a heat exchange tube is to the heat exchange tube
  • the minimum distance of the projection line of the first side of the first section of the heat exchange tube is H, and the projection line of the first side of the first section of the heat exchange tube is opposite in the length direction of the first tube.
  • the minimum distance of the projection line of the first side of the first section of the adjacent heat exchange tube is L, and satisfies that H is greater than or
  • the heat exchanger of the embodiment of the present application by disposing the first fins between the first sections of the adjacent heat exchange tubes, and disposing the second fins between the second sections of the adjacent heat exchange tubes, so that A plurality of heat exchange tubes are juxtaposed on the first tube and the second tube at the same interval along the length direction of the first tube.
  • the distance between adjacent heat exchange tubes is L
  • the bending section of the heat exchange tubes is translated by a distance H in the length direction of the first tube at the bending front, and the heat exchange tubes are bent when H is greater than or equal to L. Therefore, after bending, the adjacent curved sections in the thickness direction of the curved sections do not contact each other, and during the bending operation, the risk of mutual friction between adjacent curved sections is reduced, and the reliability of the heat exchange tube is improved.
  • the H is less than 5 times Tw, wherein the Tw is the width of the heat exchange tube.
  • the H is greater than or equal to 1.5 times L.
  • the protruding section before the bending section of the heat exchanger is bent, the protruding section at least includes a part of a first straight section, and the length direction of the first straight section is the same as that of the first section.
  • the length directions of the tubes are generally parallel, and the directions of the plurality of heat exchange tubes from the first surface of the first section to the first surface of the first straight section are consistent.
  • the length of the first straight section before bending is C
  • the length of the curved section of the heat exchange tube before bending is A
  • C is less than or equal to 0.5 times A .
  • the protruding section before the bending section of the heat exchanger is bent, includes at least a part of the first arc section, and the plurality of heat exchange tubes extend from the first surface of the first section of the heat exchanger. The direction to the first face of its first arc segment is the same.
  • the transition section includes at least part of a second straight section, and the length direction of the second straight section forms an included angle with the length direction of the first section, or the transition section At least part of the second arcuate segment is included.
  • the first fins are corrugated fins extending along the length of the first section of the heat exchange tube, and/or the second fins are the first fins along the length of the heat exchange tube Two sections of corrugated fins extending in the length direction, the density of the first fins is different from the density of the second fins.
  • the first fins are insert fins extending along the thickness direction of the first section of the heat exchange tube, and/or the second fins are along the thickness of the heat exchange tube The thickness direction of the second segment extends the fin fins.
  • the processing method of a heat exchanger includes the following steps: preparing a heat exchanger to be processed, the heat exchanger to be processed includes a first tube, a second tube, a plurality of heat exchangers Tubes and fins, a plurality of the heat exchange tubes are arranged at intervals along the length direction of the first tube, the heat exchange tubes communicate with the first tube and the second tube, and the heat exchange tubes are included in the first tube.
  • the heat exchange tube includes a first section, a to-be-bent section and a second section, one end of the first section and one end of the to-be-bent section connected, the other end of the first segment is connected to the first pipe, one end of the second segment is connected to the other end of the to-be-bent segment, and the other end of the second segment is connected to the second pipe
  • the fins include first fins and second fins, the first fins are arranged between the adjacent first sections in the length direction of the first tube, and the second fins The fins are arranged between the adjacent second sections in the length direction of the first tube, and no fins are arranged between the adjacent sections to be bent in the length direction of the first tube;
  • the length direction of the first tube translates part of the tube section of the heat exchange tube to be bent relative to the first section and the second section of the heat exchange tube by a preset distance, so that the translated section to be bent has a predetermined distance.
  • the partial tube section is offset from the first section of the heat exchange tube in the length direction of the first tube; the first tube moves towards the second tube, and the second tube moves towards the first tube ; After the part of the tube section of the to-be-bent section is translated by a preset distance, the to-be-bent section of the heat exchange tube is bent so that it is bent in the length direction, while the first section and the second section of the heat exchange tube are between the first section and the second section. The included angle between them is reduced to a predetermined angle.
  • the first fins are arranged between the first sections of adjacent heat exchange tubes, and the second fins are arranged between the second sections of the adjacent heat exchange tubes , so that a plurality of heat exchange tubes are arranged on the first tube and the second tube side by side at the same interval along the length direction of the first tube.
  • the bending section of the heat exchange tube is translated by a preset distance in the length direction of the first tube at the bending front, and then the heat exchange tube is bent. Therefore, after bending, the adjacent tube sections in the thickness direction of the bent section are arranged at intervals, and during the bending operation, the adjacent bent heat exchange tube sections will not rub against each other, thereby improving the reliability of the heat exchange tube.
  • a partial pipe section of at least one of the plurality of sections to be bent is sequentially shifted relative to the first section and the second section by a predetermined distance along the length direction of the first pipe, or, Partial pipe sections of the plurality of sections to be bent are translated relative to the first section and the second section by a preset distance at the same time as the length of the first pipe, and the preset distance is greater than or equal to the length of the first pipe.
  • the spacing between adjacent first sections in the length direction of a tube is sequentially shifted relative to the first section and the second section by a predetermined distance along the length direction of the first pipe, or, Partial pipe sections of the plurality of sections to be bent are translated relative to the first section and the second section by a preset distance at the same time as the length of the first pipe, and the preset distance is greater than or equal to the length of the first pipe.
  • the included angle between the first surface of the to-be-bent section of the heat exchange tube and the first surface of the first section of the heat exchange tube is greater than 0 degrees and less than or equal to 90 degrees.
  • a mandrel when bending the to-be-bent section of the heat exchange tube, a mandrel is placed on the to-be-bent section, and the mandrel abuts on the protruding tube section of the to-be-bent section .
  • the step of bending the to-be-bent section of the heat exchange tube includes the following sub-steps: bending the to-be-bent section of the heat exchange tube to align the length direction of the first section and the length of the second section Bend the angle between the directions to a preset angle A1; extract the mandrel; continue to bend the to-be-bent section of the heat exchange tube to make the difference between the length direction of the first section and the length direction of the second section The angle between them is bent to the target angle A2, A2 ⁇ 0°, and A2 is smaller than A1.
  • the method for manufacturing a heat exchanger includes the steps of: placing one or more partial pipe sections of the heat exchange pipe relative to the first section of the heat exchange pipe along the thickness direction of the heat exchange pipe The end and the second end are translated by a preset distance, so that the part of the pipe section of the heat exchange tube after translation protrudes from the first end and the second end of the heat exchange tube in the thickness direction of the heat exchange tube; A plurality of the heat exchange tubes are arranged at intervals along the thickness direction of the heat exchange tubes, and some tube sections of the plurality of heat exchange tubes protrude from the first ends of the corresponding heat exchange tubes in the length direction of the first tubes The direction is the same as that of the second end; one end of the plurality of heat exchange tubes is fixedly connected to the first tube and the other end of the plurality of heat exchange tubes is fixedly connected to the second tube.
  • the outlet part is aligned in the length direction of the first tube; in the thickness direction of the heat exchange tube, first fins and second fins are arranged between adjacent heat exchange tubes, adjacent to the heat exchange tube No fins are provided between the protruding parts of the heat pipe; wherein the section of the heat exchange tube connected to the first fin is the first section, and the section of the heat exchange tube connected to the second fin is the first section One section is the second section, and the part of the heat exchange tube that is not connected with the first fin and the second fin is the section to be bent.
  • the middle pipe section of the heat exchange pipe is translated by a preset distance, and then the translated heat exchange pipe is installed between the first pipe and the second pipe, and then the heat exchange pipe is further moved.
  • the heat pipe is bent.
  • adjacent curved sections are not in contact after bending, thereby reducing the risk of mutual friction between adjacent heat exchange tubes and improving the reliability of the heat exchange tubes.
  • This operation can also avoid the influence on the fixed connection between the heat exchange tube and the first tube when the heat exchange tube is moved in translation, which is further beneficial to improve the reliability and service life of the heat exchanger.
  • the processing method of the heat exchanger further includes the following steps: fixedly connecting the heat exchange tube and the first tube, fixedly connecting the heat exchange tube and the second tube, and fixedly connecting The heat exchange tube and the first fin are fixedly connected to the heat exchange tube and the second fin.
  • the method for processing a heat exchanger further comprises the following step: bending the to-be-bent section of the heat exchange tube to bend it in the longitudinal direction, while the The included angle between the first section and the second section of the heat exchange tube is reduced to a predetermined angle.
  • the heat exchange tube includes a first surface and a second surface arranged in parallel in the length direction of the first tube, and before bending the to-be-bent section of the heat exchange tube, along the The length direction of the first tube is relative to the first section and the second section of the heat exchange tube by twisting the protruding tube section, so that the first surface of the protruding tube section is connected to the first surface of the first section.
  • the included angle between them is greater than 0 degrees and less than or equal to 90 degrees.
  • the step of bending the exchanging tube includes the following sub-steps: bending the protruding tube section of the heat exchange tube to bend the angle between the length direction of the first section and the length direction of the second section to the preset angle A1; withdraw the mandrel; continue to bend the protruding tube section of the heat exchange tube to bend the angle between the length direction of the first section and the length direction of the second section To the target angle A2, A2 ⁇ 0°, and A2 is smaller than A1.
  • FIG. 1 is a front view of a heat exchanger according to an embodiment of the present application.
  • FIG 2 is a side view of a heat exchanger according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the section to be bent in the heat exchanger according to the embodiment of the present application before translation.
  • FIG. 4 is a schematic diagram of a section to be bent in a heat exchanger according to an embodiment of the present application after translation.
  • FIG. 5 is an enlarged schematic view of part a in FIG. 4 .
  • FIG. 6 is a schematic diagram of a section to be bent in a heat exchanger according to another embodiment of the present application after translation.
  • Fig. 7 is a schematic diagram of the to-be-bent section in the heat exchanger after translation according to still another embodiment of the present application.
  • FIG. 8 is a schematic perspective view of a heat exchange tube in a heat exchanger according to an embodiment of the present application.
  • FIG 9 is a cross-sectional view of a heat exchange tube in a heat exchanger according to an embodiment of the present application.
  • FIG. 10 is a partial perspective view of a fin in a heat exchanger according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of fixing a heat exchanger before being bent in a method for manufacturing a heat exchanger according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram when the to-be-bent section is translated in the processing method of the heat exchanger according to an embodiment of the present application.
  • FIG. 13 is a schematic view of the pushing device of FIG. 12 .
  • FIG. 14 is a schematic diagram after the to-be-bent section is translated in the processing method of the heat exchanger according to an embodiment of the present application.
  • FIG. 15 is a schematic diagram of twisting the to-be-bent section in the processing method of the heat exchanger according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of the heat exchanger after twisting the to-be-bent section in the processing method of the heat exchanger according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of bending a heat exchange tube to a predetermined angle A1 in a method for manufacturing a heat exchanger according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of bending a heat exchange tube to a predetermined angle A2 in a method for manufacturing a heat exchanger according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram after the to-be-bent section of the heat exchange tube is translated in a method for manufacturing a heat exchanger according to another embodiment of the present application.
  • 20 is a schematic diagram of installing the heat exchange tubes on the first tube and the second tube after the to-be-bent section is translated in a method for manufacturing a heat exchanger according to another embodiment of the present application.
  • FIG. 21 is a schematic diagram of twisting the to-be-bent section in the processing method of the heat exchanger according to another embodiment of the present application.
  • FIG. 22 is a schematic diagram of a heat exchanger after twisting the to-be-bent section in a method for manufacturing a heat exchanger according to another embodiment of the present application.
  • FIG. 23 is a schematic diagram of bending a heat exchange tube to a predetermined angle A1 in a method for manufacturing a heat exchanger according to another embodiment of the present application.
  • FIG. 24 is a schematic diagram of bending a heat exchange tube to a predetermined angle A2 in a method for manufacturing a heat exchanger according to another embodiment of the present application.
  • the heat exchanger includes a first tube 1 , a second tube 2 , a plurality of heat exchange tubes 3 and fins 4 .
  • the first tube 1 and the second tube 2 are arranged side by side, and the length of the first tube 1 and the length of the second tube 2 are the same.
  • a plurality of heat exchange tubes 3 are arranged at intervals along the length direction of the first tube 1 (the left-right direction as shown in FIG. 1 ).
  • the heat exchange tubes 3 communicate with the first tube 1 and the second tube 2 and are flat in shape.
  • the heat exchange tube 3 includes a first surface (the left end surface of the heat exchange tube 3 in FIG. 1 ) and a second surface (as shown in FIG. The right end face of the heat exchange tube 3 in 1)
  • the heat exchange tube 3 includes a third surface arranged along the width direction of the heat exchange tube 3 (the front and rear direction as shown in FIG. front end surface) and the fourth surface (the rear end surface of the heat exchange tube 3 in FIG. 2 ), the intersection of the first surface and the third surface is the first side edge.
  • the heat exchange tube 3 includes a first surface (the left side of the heat exchange tube 3 in FIG. 1 ) and a second surface (the right side of the heat exchange tube 3 in FIG. 1 ) arranged in parallel in the length direction of the first tube 1 noodle).
  • the heat exchange tubes 3 are generally flat, and the heat exchange tubes 3 have a length extending in the front-rear direction and extending in the left-right direction.
  • the thickness and the width along the perpendicular to the page shown in FIG. 3 and satisfy the length of the heat exchange tube 3 > the width of the heat exchange tube 3 > the thickness of the heat exchange tube 3 .
  • the heat exchange tube 3 includes a first section 31 , a curved section 33 and a second section 32 .
  • One end of the first section 31 of the heat exchange tube 3 (the lower end of the first section 31 in FIG. 1 ) is connected to one end of the curved section 33 , and the other end of the first section 31 (the upper end of the first section 31 in FIG. 1 ) Connected with the first tube 1, one end of the second section 32 of the heat exchange tube 3 (the lower end of the second section 32 in FIG. 1 ) is connected to the other end of the curved section 33, and the other end of the second section 32 (as shown in FIG. 1 ) The upper end of the second section 32 in the middle) is communicated with the second pipe 2 .
  • the length direction of the first segment 31 and the length direction of the second segment 32 form an included angle, and adjacent curved segments 33 are arranged at intervals in the thickness direction of the curved segments 33 .
  • the fins 4 include first fins 41 and second fins 42.
  • the first fins 41 are arranged between the adjacent first sections 31 in the length direction of the first tube 1, and the second fins 42 are arranged at the first section 31. Between adjacent second sections 32 in the length direction of a tube 1 , no fins are provided between adjacent curved sections 33 in the length direction of the first tube 1 .
  • the bending section 33 of the heat exchanger includes a to-be-bent section 34 before bending, and the to-be-bent section 34 includes a protruding section 341 and at least a Two transition sections 342 .
  • One end of the protruding section 341 (the front end of the protruding section 341 in FIG. 4 ) is connected to one end of a transition section 342 (the rear end of a transition section 342 in FIG. 4 ), and the other end of the transition section 342 (such as The front end of a transition section 342 in FIG.
  • the plane is the first plane (the plane parallel to the page in Figure 4).
  • the projection line of the first side of the protruding section 341 of the heat exchange tube 3 (the left side of the protruding section 341 in FIG.
  • the projection line of one side (the left side of the first section 31 in FIG. 4 ) is not collinear, and the projection line of the first side of the protruding section 341 of a heat exchange tube 3 is to the projection line of the heat exchange tube 3
  • the minimum distance of the projection line of the first side of the first section 31 is H
  • the minimum distance of the projection line of the first side of the first section 31 of a heat exchange tube 3 is L, and H is greater than or equal to L.
  • the heat exchanger of the embodiment of the present application by disposing the first fins between the first sections of the adjacent heat exchange tubes, and disposing the second fins between the second sections of the adjacent heat exchange tubes, so that The plurality of heat exchange tubes are arranged side by side at the same interval along the length direction of the first tube, and communicate with the first tube and the second tube.
  • the distance between adjacent heat exchange tubes is L
  • the bending section of the heat exchange tubes is translated by a distance H in the length direction of the first tube at the bending front, and the heat exchange tubes are bent when H is greater than or equal to L.
  • the heat exchanger is designed with a protruding section for the to-be-bent section before bending, and the protruding distance of the protruding end is greater than the spacing of the adjacent first sections, so that the bending sections of adjacent heat exchange tubes after bending are arranged at intervals, and the adjacent There is no contact between the bending sections, which reduces the risk of friction between adjacent bending sections during the bending process, and improves the reliability of the heat exchange tube.
  • the surface of the heat exchange tube is provided with a zinc-containing material layer to increase the corrosion resistance of the heat exchange tube, and the spacing of the bending sections also reduces the friction between the surfaces of adjacent bending sections during the bending process and damages the zinc layer. risks of.
  • the heat exchanger since there are sufficient gaps between the curved sections of the heat exchange tubes and no overlapping sections, the accumulation of moisture and dust in the curved sections is reduced, and the corrosion risk of the curved sections is reduced. Since there are no fins in the curved section, the curved section is a region with weaker corrosion resistance than the first and second sections. Therefore, the risk of corrosion resistance of the curved section is reduced, which is beneficial to the improvement of the overall reliability and service life of the heat exchanger. .
  • the surface of the heat exchanger needs to be covered with an anti-corrosion layer (electroplating or spraying), and the curved section can be completely covered with the anti-corrosion layer material to improve the corrosion resistance of the heat exchanger.
  • an anti-corrosion layer electrowetting or spraying
  • H is less than 5 times Tw, where Tw is the width of the heat exchange tube 3 . It can be understood that the translation distance H of the to-be-bent section 34 in the heat-exchange tube 3 is related to the width of the heat-exchange tube 3 itself. The distance that the to-be-bent section 34 is translated has a negative impact on the overall heat exchange efficiency of the heat exchanger, therefore, H ⁇ 5Tw.
  • H is greater than or equal to 1.5 times L. Therefore, after the heat exchange tube 3 is bent, the first section 31 and the second section 32 extend in the up-down direction, and the bending section 33 extends from the top down and inclines to the left.
  • the adjacent curved sections 33 are arranged at intervals, which improves the reliability of the heat exchange tube 3 .
  • the protruding section 341 before the bending section 33 is bent, includes at least a part of the first straight section 3411 , and the length direction of the first straight section 3411 (the front-rear direction as shown in FIG. 4 ) is the same as the first straight section 3411 .
  • the length direction of the segment 31 (the front-rear direction as shown in FIG. 4 ) is substantially parallel, and the directions of the plurality of heat exchange tubes 3 from the first surface of the first segment 31 to the first surface of the first straight segment 3411 are consistent .
  • the bent sections can be inclined in the same direction, thereby improving the compactness of the structure of the heat exchanger.
  • the directions of the plurality of heat exchange tubes 3 from the first surface of the first section 31 to the first surface of the first arc section 3412 may also be inconsistent.
  • the heat exchange tubes are respectively It is inclined to different opposite directions, and the spaced arrangement of the curved sections is beneficial to control the size of the curved sections in the left and right directions, and the heat exchanger has a compact structure.
  • the first straight section 3411 extends in the front-rear direction
  • the first section 31 extends in the front-rear direction
  • the length direction of the first straight section 3411 is substantially parallel to the length direction of the first section 31 .
  • the plurality of sections to be bent 34 are all translated by the same distance in the direction from right to left.
  • the length of the first straight section 3411 before bending is C
  • the length of the curved section 33 of the heat exchange tube 3 before bending is A
  • C is less than or equal to 0.5 times of A .
  • the heat exchange tube 3 extends straight in the front-rear direction, and the length of the heat exchange tube 3 is A.
  • the length of the first straight section 3411 before bending is C, and satisfies A which is less than or equal to 0.5 times of C. Therefore, when the to-be-bent section 34 is translated, the resistance of the heat exchange tube 3 when it is displaced can be reduced, thereby reducing the stress on the heat exchange tube 3 and reducing the impact on the heat exchange tube 3 to the first tube 1 and the second tube respectively.
  • the protruding section 341 before the bending section 33 is bent, includes at least a part of the first arc section 3412 , and the plurality of heat exchange tubes 3 extend from the first surface of the first section 31 to the first arc section.
  • the direction of the first side of 3412 is the same.
  • the plurality of to-be-bent sections 34 are all translated by the same distance in the direction from right to left.
  • the direction from the first face of segment 31 to the first face of its first arcuate segment 3412 is the same.
  • the front end of the first arcuate segment 3412 is connected to the first segment 31
  • the rear end of the first arcuate segment 3412 is connected to the second segment 32 .
  • the plurality of sections 34 to be bent are all translated by the same distance in the direction from right to left, so that the plurality of heat exchange tubes 3 go from the first surface of the first section 31 to the first surface of the first section 31 thereof.
  • the directions of the first surfaces of an arc-shaped segment 3412 are the same.
  • the transition section 342 includes at least part of the second straight section 3421 , and the length direction of the second straight section 3421 forms an angle with the length direction of the first section 31 , or the transition section 342 includes at least part of the second straight section 3421 .
  • the second arcuate segment 3422 is
  • both the first segment 31 and the second segment 32 extend in the front-rear direction
  • the front end of a second straight segment 3421 is connected to the rear end of the first segment 31
  • the second straight segment 3421 is connected to the rear end of the first segment 31 .
  • the rear end of the segment 3421 is inclined to the left in the direction from front to rear
  • the rear end of another second straight segment 3421 is connected to the front end of the second segment 32
  • the front end of the other second straight segment 3421 is from rear to front Extend and lean to the left.
  • the front end of the first arc-shaped segment 3412 is connected to the first segment 31 through a second arc-shaped segment 3422
  • the rear end of the first arc-shaped segment 3412 is connected to the first segment 31 .
  • the ends are connected to the second segment 32 by another second arcuate segment 3422.
  • the first fins 41 are corrugated fins extending along the length of the first section 31 of the heat exchange tube 3
  • the second fins 42 are along the length of the second section 32 of the heat exchange tube 3 In the corrugated fins extending in the direction, the density of the first fins 41 and the density of the second fins 42 are different.
  • the first fin 41 is composed of a plurality of identical sub-fins, and the plurality of sub-fins are connected end to end to form a corrugated first fin 41 .
  • the first fins 41 are provided between the adjacent first segments 31, and the first fins 41 are used to fix two adjacent first segments 31 in the left-right direction, so that the The relative position is stable, and the heat exchange performance of the heat exchanger is improved.
  • the second fins 42 are composed of a plurality of identical sub-fins, and the plurality of sub-fins are connected end to end to form a corrugated second fin 42 .
  • the second fins 42 are provided between the adjacent second segments 32, and the second fins 42 are used to fix the two adjacent second segments 32 in the left-right direction, so that the The relative position is stable, and the heat exchange performance of the heat exchanger is improved.
  • the density of the plurality of sub-fins in the first fin 41 and the density of the plurality of sub-fins in the second fin 42, the number of openings and the opening angles of the openings may be the same or different.
  • the fins 4 can increase the heat exchange area between the adjacent heat exchange tubes 3 and improve the heat exchange efficiency of the heat exchanger.
  • the first fins 41 are insert fins extending along the thickness direction of the first section 31 of the heat exchange tube 3
  • the second fins 42 are the second section along the heat exchange tube 3 . 32
  • the thickness direction of the fins extends.
  • the heat exchanger includes a first tube 1 , a second tube 2 , a plurality of heat exchange tubes 3 and fins 4 .
  • the first pipe 1 and the second pipe 2 are arranged side by side in the left-right direction, and the length of the first pipe 1 and the length of the second pipe 2 are the same.
  • a plurality of heat exchange tubes 3 are arranged between the first tube 1 and the second tube 2 at intervals in the left-right direction.
  • the heat exchange tube 3 includes a first section 31 , a curved section 33 and a second section 32 .
  • the lower end of the first section 31 is connected to one end of the curved section 33
  • the upper end of the first section 31 is connected to the first tube 1
  • the lower end of the second section 32 of the heat exchange tube 3 is connected to the other end of the curved section 33
  • the second section The upper end of 32 is communicated with the second pipe 2 .
  • the length direction of the first segment 31 and the length direction of the second segment 32 form an included angle, and adjacent curved segments 33 in the left-right direction are arranged at intervals.
  • the bending section 33 Before bending, the bending section 33 includes a to-be-bent section 34 , and the to-be-bent section 34 includes a protruding section 341 and at least two transition sections 342 .
  • the front end of the protruding section 341 is connected with the rear end of a transition section 342
  • the front end of one transition section 342 is connected with the rear end of the first section 31
  • the rear end of the protruding section 341 is connected with the front end of the other transition section 342
  • the other The rear end of one transition section 342 is connected to the front end of the second section 32 .
  • the heat exchange tube 3 is flat, and the heat exchange tube 3 includes a left end surface and a second right end surface arranged in the left-right direction.
  • the heat exchange tube 3 includes a front end surface and a rear end surface arranged in the front-rear direction. The intersection of the faces is the first side. .
  • a plane parallel to the page shown in FIG. 4 is defined as the first plane.
  • the projection line of the first side edge of the protruding section 341 of the heat exchange tube 3 is not collinear with the projection line of the first side edge of the first section 31 of the heat exchange tube 3, and one heat exchange tube
  • the minimum distance from the projection line of the first side of the protruding section 341 of the tube 3 to the straight line where the projection line of the first side of the first section 31 of the heat exchange tube 3 is located is H.
  • the minimum distance between the projection of the first side of a section 31 to the projection of the first side of the first section 31 of another heat exchange tube 3 adjacent in the length direction of the first tube 1 is L, and Satisfy that H is greater than or equal to L.
  • the protruding section 341 includes a first straight section 3411 .
  • the first straight section 3411 extends in the front-rear direction
  • the first section 31 extends in the front-rear direction
  • the length direction of the first straight section 3411 is substantially parallel to the length direction of the first section 31 .
  • the transition section 342 includes a second straight section 3421 . Both the first section 31 and the second section 32 extend in the front-rear direction, the front end of a second straight section 3421 is connected to the rear end of the first section 31, and the rear end of the second straight section 3421 extends from the front to the rear and Inclined to the left, the rear end of another second straight section 3421 is connected to the front end of the second section 32 , and the front end of the other second straight section 3421 extends from the rear to the front and is inclined to the left.
  • the fins 4 include first fins 41 and second fins 42 .
  • the first fin 41 is composed of a plurality of identical sub-fins, and the plurality of sub-fins are connected end to end to form a corrugated first fin 41.
  • the first fins 41 are arranged between the adjacent first segments 31 , and the first fins 41 are used to fix two adjacent first segments 31 .
  • the second fins 42 are composed of a plurality of identical sub-fins, and the plurality of sub-fins are connected end to end to form a corrugated second fin 42 .
  • the second fins 42 are arranged between the adjacent second segments 32 , and the second fins 42 are used for fixing two adjacent second segments 32 .
  • the heat exchanger includes a first tube 1 , a second tube 2 , a plurality of heat exchange tubes 3 and fins 4 .
  • the protruding section 341 includes a first arcuate section 3412
  • the transition section 342 includes two second straight sections 3421 .
  • the front end of the first arc segment 3412 is connected to the rear end of a second straight segment 3421, the front end of the second straight segment 3421 is connected to the rear end of the first segment 31, and the rear end of the first arc segment 3412 It is connected with the front end of another second straight section 3421 , and the rear end of the other second straight section 3421 is connected with the front end of the second section 32 .
  • FIGS. 1 and 6 Other structures of the heat exchanger shown in FIGS. 1 and 6 may be the same as those of the embodiments shown in FIGS. 2-5 and 8, and will not be described in detail here.
  • the heat exchanger includes a first tube 1 , a second tube 2 , a plurality of heat exchange tubes 3 and fins 4 .
  • the protruding section 341 includes a first arcuate section 3412
  • the transition section 342 includes two second arcuate sections 3422 .
  • the front end of the first arc segment 3412 is connected to the rear end of a second arc segment 3422, the front end of the second arc segment 3422 is connected to the rear end of the first segment 31, and the rear end of the first arc segment 3412 It is connected to the front end of another second arc-shaped segment 3422 , and the rear end of the other second arc-shaped segment 3422 is connected to the front end of the second segment 32 .
  • FIGS. 1 and 7 Other structures of the heat exchanger shown in FIGS. 1 and 7 may be the same as those of the embodiment shown in FIGS. 2-5 and 8, and will not be described in detail here.
  • the processing method of the heat exchanger according to Embodiment 1 of the present application includes the following steps:
  • the heat exchanger to be processed includes a first tube 1 , a second tube 2 , a plurality of heat exchange tubes 3 and fins 4 .
  • a plurality of heat exchange tubes 3 are arranged at intervals along the length direction of the first tube 1 (the left-right direction as shown in FIG. 11 ), and the heat exchange tubes 3 communicate with the first tube 1 and the second tube 2 .
  • the heat exchange tube 3 includes a first surface (the left side of the heat exchange tube 3 in FIG. 11 ) and a second surface (the right side of the heat exchange tube 3 in FIG. 11 ) arranged in parallel in the length direction of the first tube 1 noodle).
  • the heat exchange tube 3 includes a first section 31 , a to-be-bent section 34 and a second section 32 .
  • One end of the first segment 31 (as shown in the rear end of the first segment 31 in FIG. 11 ) is connected to one end of the segment to be bent (as shown in the front end of the segment 34 to be bent in FIG. 11 ), and the other end of the first segment 31 (as shown in FIG. 11 )
  • the front end of the first section 31) communicates with the first tube 1, and one end of the second section 32 (as shown in the front end of the second section 32 in FIG. 11 ) is connected to the other end of the to-be-bent section 34 (as shown in FIG. end), and the other end of the second section 32 (as shown in the rear end of the second section 32 in FIG. 11 ) is communicated with the second pipe 2 .
  • the fins 4 include first fins 41 and second fins 42.
  • the first fins 41 are arranged between the adjacent first sections 31 in the length direction of the first tube 1, and the second fins 42 are arranged at the first section 31. Between adjacent second sections 32 in the length direction of a tube 1 , no fins are provided between adjacent sections 34 to be bent in the length direction of the first tube 1 .
  • Part of the tube section of the to-be-bent section 34 of the heat exchange tube 3 is translated along the length direction of the first tube 1 by a preset distance relative to the first section 31 and the second section 32 of the heat-exchange tube 3, so that the translated section to be bent
  • the part of the tube section 34 is offset from the first section 31 of the heat exchange tube 3 in the length direction of the first tube 1 .
  • the first tube 1 moves towards the second tube 2 and the second tube 2 moves towards the first tube 1 .
  • the to-be-bent section 34 of the heat exchange tube 3 is bent so as to be bent in the length direction, while the first section 31 and the second section 32 of the heat exchange tube 3 are between the first section 31 and the second section 32.
  • the included angle is reduced to a predetermined angle.
  • the first tube 1 and the second tube 2 can be fixed by the clamping device 50 .
  • the number of clamping devices 50 is at least two, at least two clamping devices 50 are arranged on the first pipe 1 and the second pipe 2, and at least two clamping devices 50 fix the heat exchanger to be processed on the The movement of the heat exchanger in the length direction of the first tube 1 is restricted on the workbench.
  • the heat exchanger to be processed may not be fixed, or a clamping device may not be used, which is beneficial to the movement of the heat exchanger in the subsequent bending process.
  • a part of the pipe section of at least one of the plurality of sections 34 to be bent is sequentially shifted relative to the first section 31 and the second section 32 by a predetermined distance along the length direction of the first pipe 1 , or,
  • the length direction of the first pipe 1 simultaneously translates part of the pipe segments of the plurality of to-be-bent segments 34 relative to the first segment 31 and the second segment 32 by a preset distance, and the preset distance is greater than or equal to the same distance in the length direction of the first pipe 1 .
  • the spacing between adjacent first segments 31 is
  • a device may be used to effect translation of the plurality of heat exchange tubes.
  • the pushing device 60 is inserted between the adjacent sections 34 to be bent in the length direction of the first pipe 1 .
  • the pushing device 60 is moved horizontally in the left-right direction, so that some of the pipe sections in the to-be-bent section 34 are moved horizontally by a preset distance relative to the first section 31 and the second section 32 .
  • the pushing device 60 can be a single segment 34 to be bent step by step, or it can be A plurality of groups of to-be-bent segments 34 among the plurality of to-be-bent segments 34 are moved step by step, wherein each group of to-be-bent segments 34 includes at least two to-be-bent segments 34 .
  • the midpoint of the lengthwise direction of the to-be-bent segment 34 is taken, and the midpoint of the to-be-bent segment 34 is horizontally shifted to the left along the left-right direction to obtain the first arc-shaped segment 3412 , which is located in the first arc-shaped segment 3412 .
  • the outer peripheral contours of the cross-sections of the first arc-shaped section 3412 and the two second straight sections 3421 are approximately V or U-shaped.
  • the midpoint of the to-be-bent segment 34 is horizontally shifted to the left along the left-right direction to obtain the first arc-shaped segment 3412 located at the front end of the first arc-shaped segment 3412 A second arc-shaped segment 3422 and another second arc-shaped segment 3422 located at the rear end of the first arc-shaped segment 3412. It can be understood that other positions of the to-be-bent segment 34 can also be used for translation to obtain the first arc-shaped segment 3412 and the second arc-shaped segment 3422.
  • the to-be-bent section 34 before bending the to-be-bent section 34 of the heat exchange tube 3 , the to-be-bent section 34 is twisted relative to the first section 31 and the second section 32 of the heat exchange tube 3 along the length direction of the first tube 1 , so as to The included angle between the first surface of the to-be-bent section 34 of the heat exchange tube 3 and the first surface of the first section 31 of the heat exchange tube 3 is greater than 0 degrees and less than or equal to 90 degrees.
  • the torsion position of the to-be-bent segment 34 is determined, and the torsion member 80 is placed on the lower side of the torsion position and abuts against the lower surfaces of the plurality of to-be-bent segments 34 . Then, the torsion member 80 is sequentially contacted with part of the surfaces of the plurality of sections 34 to be bent along the length direction of the first tube 1 (the left and right directions as shown in FIG.
  • the to-be-bent section 34 of the heat exchange tube 3 is inclined relative to the first section 31 and the second section 32, so that the first surface of the to-be-bent section 34 of the heat exchange tube 3 and the first surface of the first section 31 of the heat exchange tube 3 are inclined.
  • the angle between the sides is greater than 0 degrees and less than or equal to 90 degrees.
  • the mandrel 70 when bending the to-be-bent section 34 of the heat exchange tube 3 , the mandrel 70 is placed on the to-be-bent section 34 , and the mandrel 70 abuts on part of the to-be-bent section 34 . It can be understood that the mandrel can control the deformation of the heat exchange tube of the bending section, but the bending can also be completed without using the mandrel 70 .
  • the torsion position of the sections 34 to be bent is identified, and the mandrel 70 is placed on the upper side of the torsion position and abuts against the upper surfaces of the plurality of sections 34 to be bent. At the same time, move the first tube 1 and the second tube 2 on both sides upward to reduce the angle between the first section 31 and the second section 32, so that the part of the tube section of the to-be-bent section 34 is close to the outer peripheral surface of the mandrel 70 .
  • the mandrel when bending the heat exchange tube with the bending section 34, the mandrel is placed on the to-be-bent section 34, the heat-exchange tube of the to-be-bent section 34 is not twisted, and the mandrel 70 abuts against the to-be-bent section 34
  • the part of the pipe section is set on one surface in the width direction.
  • the step of bending the to-be-bent section 34 of the heat exchange tube 3 includes the following sub-steps: bending the to-be-bent section 34 of the heat exchange tube 3 to align the length direction of the first section 31 and the length direction of the second section 32 The angle between them is bent to the preset angle A1. Pull out the mandrel 70, continue to bend the to-be-bent section 34 of the heat exchange tube 3 to bend the angle between the length direction of the first section 31 and the length direction of the second section 32 to the target angle A2, A2 ⁇ 0°, and A2 is smaller than A1.
  • the heat exchange tube of the to-be-bent section 34 may be pushed to the left in whole or in part, and then the to-be-bent section 34 of the heat exchange tube 3 is continuously bent to make the first section 31
  • the angle between the length direction and the length direction of the second segment 32 is bent to the target angle A2, A2 ⁇ 0°, and A2 is smaller than A1.
  • the clamping device 50 moves upward synchronously to bend the to-be-bent section 34 of the heat exchange tube 3 so that the first section 31 and the second section 32 are close to each other, and the length direction of the first section 31 and the second section
  • the angle between the length directions of 32 is A1.
  • the range of A1 may be: 60° ⁇ A1 ⁇ 135°.
  • the mandrel 70 is first pulled out, and then the clamping device 50 is moved upward to further bend the to-be-bent section 34 of the heat exchange tube 3, so that the first section 31 and the second section 32 are further approached, and the first section 31
  • the included angle between the length direction of the second segment 32 and the length direction of the second segment 32 is A2. Specifically, A2 ⁇ 0°, and A2 is smaller than A1.
  • the processing method of a heat exchanger includes the following steps:
  • the plurality of heat exchange tubes 3 are arranged at intervals along the thickness direction of the heat exchange tubes 3, and the two ends in the length direction are respectively fitted with the first tube 1 and the second tube 2, and some of the tube sections of the plurality of heat exchange tubes 3 are in the first tube 1 and the second tube 2.
  • the length direction of a tube 1 protrudes from the first end and the second end of the corresponding heat exchange tube 3 in the same direction.
  • One end of the plurality of heat exchange tubes 3 (the front end of the heat exchange tube 3 in Figure 20) is fixedly connected to the first tube 1 and the other end of the plurality of heat exchange tubes 3 (the rear end of the heat exchange tube 3 in Figure 20) is fixedly connected ) is fixedly connected with the second tube 2 , and the protruding parts of the plurality of heat exchange tubes 3 are aligned in the length direction of the first tube 1 .
  • a plurality of heat exchange tubes 3 shown in FIG. 19 are arranged between the first tube 1 and the second tube 2 at intervals, and the protruding parts of the plurality of heat exchange tubes 3 are all from right to left bulge.
  • the intervals between the plurality of heat exchange tubes 3 are the same.
  • first fins 41 and second fins 42 are provided between adjacent heat exchange tubes 3 , and no fins 4 are provided between the protruding parts of adjacent heat exchange tubes 3 .
  • the section of the heat exchange tube 3 connected to the first fins 41 is the first section 31
  • the section of the heat exchange tube 3 connected to the second fins 42 is the second section 32
  • the heat exchange tube 3 is connected to the first section 32 .
  • the part where the fins 41 and the second fins 42 are not connected is the to-be-bent section 34 .
  • the processing method of the heat exchanger further includes the following steps: fixedly connecting the heat exchange tube 3 and the first tube 1, fixedly connecting the heat exchange tube 3 and the second tube 2, and fixedly connecting the heat exchange tube 3 and the first tube 1.
  • the fins 41 are fixedly connected to the heat exchange tube 3 and the second fins 42 .
  • a plurality of heat exchange tubes 3 extend in the left-right direction, and the left end of the heat exchange tube 3 is fixedly connected to the first tube 1 , and the right end of the heat exchange tube 3 is fixedly connected to the second tube 2 .
  • the heat exchange tubes 3 are evenly arranged along the left and right directions.
  • the first fins 41 are arranged between the first sections 31 of the adjacent heat exchange tubes 3
  • the first fins 42 are arranged between the second sections 32 of the adjacent heat exchange tubes 3 .
  • the processing method of the heat exchanger further includes the following steps: bending the to-be-bent section 34 of the heat exchange tube 3 to make it bend in the length direction, and simultaneously the first section 31 and the second section of the heat exchange tube The included angle between 32 is reduced to a predetermined angle.
  • the first tube 1 and the second tube 2 are moved upward, so that the to-be-bent section 34 is bent, and at the same time, the angle between the first section 31 and the second section 32 of the heat exchange tube is reduced. as small as a predetermined angle.
  • the heat exchange tube 3 includes a first surface (the left side of the heat exchange tube 3 in FIG. 20 ) and a second surface (exchanged as shown in FIG. 20 ) that are arranged in parallel in the length direction of the first tube 1 .
  • the right side of the heat pipe 3 before bending the to-be-bent section 34 of the heat exchange pipe 3, twist the protruding pipe section along the length direction of the first pipe 1 relative to the first section 31 and the second section 32 of the heat exchange pipe 3 , so that the included angle between the first surface of the protruding pipe segment and the first surface of the first segment 31 is greater than 0 degrees and less than or equal to 90 degrees.
  • the partial pipe sections in the to-be-bent section 34 are moved horizontally by a preset distance, the partial pipe sections in the to-be-bent section 34 are twisted. Specifically, the torsion position of the to-be-bent segment 34 is taken, and the torsion member 80 is placed on the lower side of the torsion center position and is in close contact with the lower surfaces of the plurality of to-be-bent segments 34 . Then roll the torsion member 80 along the length direction of the first tube 1 (the left-right direction as shown in FIG.
  • the to-be-bent section 34 is inclined relative to the first section 31 and the second section 32, so that the first surface of the to-be-bent section 34 of the heat exchange tube 3 is located between the first surface of the first section 31 of the heat exchange tube 3
  • the included angle is greater than 0 degrees and less than or equal to 90 degrees.
  • the mandrel 70 when bending the protruding tube section of the heat exchange tube 3, the mandrel 70 is placed on the protruding tube section, and the mandrel 70 abuts part of the tube section; the protruding tube section of the heat exchange tube 3 is bent to The angle between the length direction of the section 31 and the length direction of the second section 32 is bent to the preset angle A1; the mandrel 70 is pulled out; The angle between the length directions of the second segment 32 is bent to the target angle A2, A2 ⁇ 0°, and A2 is smaller than A1.
  • the mandrel 70 is placed on the upper side of the twisted position and abutted against the upper surfaces of the multiple segments 34 to be bent.
  • the first tube 1 and the second tube 2 on both sides of the section to be bent 34 are moved upwards, so that part of the tube section of the section to be bent 34 is close to the outer peripheral surface of the mandrel 70 .
  • the first tube 1 and the second tube 2 upward synchronously to bend the to-be-bent section 34 of the heat exchange tube 3 so that the first section 31 and the second section 32 are close to each other, and the length of the first section 31
  • the angle between the direction and the length direction of the second segment 32 is A1.
  • the range of A1 may be: 60° ⁇ A1 ⁇ 135°.
  • the mandrel 70 is first pulled out, and then the first tube 1 and the second tube 2 are moved upward to further bend the to-be-bent section 34 of the heat exchange tube 3, so that the first section 31 and the second section 32 are further close to each other , the included angle between the length direction of the first segment 31 and the length direction of the second segment 32 is A2. Specifically, A2 ⁇ 0°, and A2 is smaller than A1.
  • the to-be-bent section 34 when bending the to-be-bent section 34, whether the first section 31 and the second section 32 are bent to the A1 angle or the A2 angle, it is not necessary to move the first tube 1 and the second tube 2 at the same time. Fix the first pipe 1 and the first section 31, and move the second pipe 2 and the second section 32 upward and approach the first pipe 1 and the first section 31, so as to realize the predetermined distance between the first section 31 and the second section 32 Angle.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • installed installed
  • connected connected
  • fixed a detachable connection
  • it can be a mechanical connection or an electrical connection or can communicate with each other
  • it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • the specific meanings of the above terms in this application can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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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)

Abstract

本申请的实施例公开了一种换热器和换热器的加工方法，换热器的换热管包括弯曲段和第一段与第二段，弯曲段在折弯前包括待弯曲段，待弯曲段包括凸出段，换热管包括第一面、第二面、第三面和第四面，第一面和第三面相交处为第一侧边，弯曲段在折弯前，定义平行于第一管的长度方向且平行于第一段的长度方向，同时垂直于第一段的宽度方向的平面为第一平面，在第一平面内，凸出段的第一侧边的投影线到第一段的第一侧边的投影线的最小距离为H，第一段的第一侧边的投影线到相邻的另一个第一段的第一侧边的投影线的最小距离为L，H≥L。本申请的实施例的换热器减少了折弯时相邻的弯曲段摩擦以及产品使用时积水积灰的风险，提高了换热管的可靠性。

Description

换热器和换热器的加工方法 技术领域
本申请的实施例涉及空调换热的技术领域，具体地，涉及一种换热器和该换热器的加工方法。
背景技术
目前，多通道换热器广泛应用在空调制冷领域。相关技术中，多通道换热器包括多个换热管，多个换热管包括折弯段，折弯段内不设置翅片。折弯段内在换热管厚度方向上相邻折弯段的部分管段相互搭接，在换热器安装使用之后，管段相互搭接的地方容易积水积灰，同时在换热器制造或者安装时的折弯工序中，相邻换热管搭接的管段可能会相互摩擦，降低换热管的可靠性。
发明内容
为此，本申请的一方面的实施例提出了一种换热器，该换热器减少了换热器折弯操作时相邻的弯曲段相互摩擦的风险，减少了换热器使用时的积灰积水，有利于提高换热管的可靠性。
本申请的另一方面的实施例还提出了一种换热器的加工方法。
根据本申请的第一方面的实施例的换热器包括：第一管和第二管；多个换热管，多个所述换热管沿所述第一管的长度方向间隔布置，所述换热管连通所述第一管和第二管，所述换热管为扁平状，所述换热管包括沿所述换热管的厚度方向设置的第一面和第二面，所述换热管包括沿所述换热管的宽度方向设置的第三面和第四面，所述第一面与所述第三面相交处为第一侧边，所述换热管包括第一段、弯曲段和第二段，所述换热管的第一段的一端与所述弯曲段的一端相连，所述第一段的另一端与所述第一管连通，所述换热管的第二段的一端与所述弯曲段的另一端相连，所述第二段的另一端与所述第二管连通，所述第一段的长度方向和所述第二段的长度方向成夹角，在所述弯曲段的厚度方向上相邻的所述弯曲段间隔设置；翅片，所述翅片包括第一翅片和第二翅片，所述第一翅片设置于在所述第一管的长度方向上相邻所述第一段之间，所述第二翅片设置于在所述第一管的长度方向上相邻所述第二段之间，在所述第一管的长度方向上相邻所述弯曲段之间无翅片设置；所述换热器的弯曲段在折弯前包括待弯曲段，所述待弯曲段包括凸出段和至少两个过渡段，所述凸出段的一端与一个所述过渡段的一端相连，该一个过渡段的另一端与所述第一段的一端相连，所述凸出段的另一端与另一个所述过渡段的一端相连，该另一个过渡段的另一端与所述第二段的一端相连；所述弯曲段在折弯前，定义平行于所述第一管的长度方向且平 行于所述第一段的长度方向，同时垂直于所述第一段的宽度方向的平面为第一平面，在所述第一平面内，所述换热管的所述凸出段的第一侧边的投影线与该换热管的所述第一段的第一侧边的投影线不共线，且一个所述换热管的所述凸出段的第一侧边的投影线到该换热管的所述第一段的第一侧边的投影线的最小距离为H，该换热管的所述第一段的第一侧边的投影线到在所述第一管的长度方向上相邻的另一个所述换热管的第一段的第一侧边的投影线的最小距离为L，且满足H大于等于L。
根据本申请的实施例的换热器，通过在相邻换热管的第一段之间设置第一翅片，以及在相邻换热管的第二段之间设置第二翅片，使得多个换热管沿第一管的长度方向以相同的间隔并列的设在第一管和第二管上。相邻换热管之间的间距为L，将换热管的弯曲段在折弯前沿第一管的长度方向平移H距离，且满足H大于等于L，再将换热管进行弯折。由此，使得折弯后在弯曲段厚度方向上相邻的弯曲段之间不接触，且在折弯操作时，减少了相邻的弯曲段相互摩擦的风险，提高了换热管的可靠性。
在一些实施例中，所述H小于5倍的Tw，其中，所述Tw为所述换热管的宽度。
在一些实施例中，所述H大于等于1.5倍的L。
在一些实施例中，所述换热器在所述弯曲段折弯前，所述凸出段至少包括部分第一平直段，所述第一平直段的长度方向与所述第一段的长度方向大体平行，多个所述换热管从其第一段的第一面到其第一平直段的第一面的方向一致。
在一些实施例中，所述第一平直段在折弯前的长度为C，所述换热管的弯曲段在折弯前换热管的长度为A，且C小于等于0.5倍的A。
在一些实施例中，所述换热器在所述弯曲段折弯前，所述凸出段至少包括部分第一弧形段，多个所述换热管从其第一段的第一面到其第一弧形段的第一面的方向一致。
在一些实施例中，所述过渡段至少包括部分第二平直段，所述第二平直段的长度方向与所述第一段的长度方向之间成夹角，或者，所述过渡段至少包括部分第二弧形段。
在一些实施例中，所述第一翅片为沿所述换热管的第一段长度方向延伸的波纹状翅片，和/或所述第二翅片为沿所述换热管的第二段长度方向延伸的波纹状翅片，所述第一翅片的密度与第二翅片的密度不同。
在一些实施例中，所述第一翅片为沿所述换热管的第一段的厚度方向延伸的插片翅片，和/或所述第二翅片为沿所述换热管的第二段的厚度方向延伸的插片翅片。
根据本申请的第二方面的实施例的换热器的加工方法包括如下步骤：准备待加工的换热器，所述待加工的换热器包括第一管、第二管、多个换热管和翅片，多个所述换热管沿所述第一管的长度方向间隔布置，所述换热管连通所述第一管和第二管，所述换热管包括在所述第一管的长度方向上平行设置的第一面和第二面，所述换热管包括第一段、待弯曲 段和第二段，所述第一段的一端与所述待弯曲段的一端相连，所述第一段的另一端与所述第一管连通，所述第二段的一端与所述待弯曲段的另一端相连，所述第二段的另一端与所述第二管连通，所述翅片包括第一翅片和第二翅片，所述第一翅片设置于在所述第一管的长度方向上相邻所述第一段之间，所述第二翅片设置于在所述第一管的长度方向上相邻所述第二段之间，在所述第一管的长度方向上相邻所述待弯曲段之间无翅片设置；沿所述第一管的长度方向将所述换热管的待弯曲段的部分管段相对于所述换热管的第一段和第二段平移预设距离，以使平移后的所述待弯曲段的该部分管段在所述第一管的长度方向上偏离该换热管的所述第一段；所述第一管朝向所述第二管移动，所述第二管朝向所述第一管移动；所述待弯曲段的部分管段平移预设距离之后，弯曲所述换热管的待弯曲段，使其在长度方向上发生弯曲，同时所述换热管的第一段和第二段之间的夹角减小到预定角度。
根据本申请实施例的换热器的加工方法，通过在相邻换热管的第一段之间设置第一翅片，以及在相邻换热管的第二段之间设置第二翅片，使得多个换热管沿第一管的长度方向以相同的间隔并列的设在第一管和第二管上。将换热管的弯曲段在折弯前沿第一管的长度方向平移预设距离，再将换热管进行弯折。由此，使得折弯后弯曲段厚度方向上相邻的管段间隔设置，且在折弯操作时，相邻折弯换热管段不会相互摩擦，提高了换热管的可靠性。
在一些实施例中，沿与所述第一管的长度方向依次将多个所述待弯曲段中的至少一个的部分管段相对于所述第一段和第二段平移预设距离，或者，沿与所述第一管的长度方向同时将多个所述待弯曲段的部分管段相对于所述第一段和第二段平移预设距离，所述预设距离大于或者等于在所述第一管的长度方向上相邻所述第一段之间的间距。
在一些实施例中，在弯曲所述换热管的待弯曲段之前，沿所述第一管的长度方向相对于所述换热管的第一段和第二段扭转所述待弯曲段，以使所述换热管的待弯曲段的第一面与所述换热管的第一段的第一面之间的夹角大于0度且小于等于90度。
在一些实施例中，弯曲所述换热管的待弯曲段时，将芯棒放置于所述待弯曲段上，且所述芯棒抵靠在所述待弯曲段的所述凸出管段上。
在一些实施例中，步骤弯曲所述换热管的待弯曲段包括以下分步骤：弯曲所述换热管的待弯曲段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至预设角度A1；抽出所述芯棒；继续弯曲所述换热管的待弯曲段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
根据本申请的第三方面的实施例的换热器的加工方法包括如下步骤：沿换热管的厚度方向将一个或多个所述换热管的部分管段相对于该换热管的第一端和第二端平移预设距离，以使平移后的所述换热管的该部分管段在所述换热管的厚度方向上凸出于该换热管的第一端和第二端；将多个所述换热管沿所述换热管的厚度方向间隔布置，且多个换热管的 部分管段在所述第一管的长度方向上凸出于相应换热管的第一端和第二端的方向相同；将多个所述换热管的一端与第一管固定连接以及多个所述换热管的另一端与第二管固定连接，多个所述换热管的凸出部分在所述第一管的长度方向上对齐；在所述换热管的厚度方向上，相邻所述换热管之间设置第一翅片和第二翅片，相邻所述换热管的凸出部分之间不设置翅片；其中所述换热管上与所述第一翅片连接的一段为第一段，所述换热管上与所述第二翅片连接的一段为第二段，且所述换热管上与第一翅片及第二翅片均不连接的部分为待弯曲段。
根据本申请实施例的换热器的加工方法，首先将换热管的中间管段平移预设距离，再将平移后的换热管安装在第一管和第二管之间，再进一步将换热管进行弯折。由此，使得折弯后相邻的弯曲段之间不接触，减少了相邻换热管相互摩擦的风险，提高了换热管的可靠性。如此操作，也可以避免了换热管平移时对换热管和第一管固定连接处的影响，进一步有利于提高换热器的可靠性和使用寿命。
在一些实施例中，所述的换热器的加工方法还包括以下步骤：固定连接所述换热管与所述第一管，固定连接所述换热管与所述第二管，固定连接所述换热管与所述第一翅片，固定连接所述换热管与所述第二翅片。
在一些实施例中，所述的换热器的加工方法，其特征在于，还包括以下步骤：弯曲所述换热管的所述待弯曲段，使其在长度方向上发生弯曲，同时所述换热管的第一段和第二段之间的夹角减小到预定角度。
在一些实施例中，所述换热管包括在所述第一管的长度方向上平行设置的第一面和第二面，在弯曲所述换热管的所述待弯曲段之前，沿所述第一管的长度方向相对于所述换热管的第一段和第二段扭转所述凸出管段，以使所述凸出管段的第一面与所述第一段的第一面之间的夹角大于0度且小于等于90度。
在一些实施例中，弯曲所述换热管的所述凸出管段时，将芯棒放置于所述凸出管段上，且所述芯棒抵靠所述凸出管段；步骤弯曲所述换热管的所述凸出管段包括以下分步骤：弯曲所述换热管的所述凸出管段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至预设角度A1；抽出所述芯棒；继续弯曲所述换热管的所述凸出管段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
附图说明
图1是根据本申请实施例的换热器的主视图。
图2是根据本申请实施例的换热器的侧视图。
图3是根据本申请实施例的换热器中待弯曲段未平移前的示意图。
图4是根据本申请的一个实施例的换热器中待弯曲段平移后的示意图。
图5是图4中局部a的放大示意图。
图6是根据本申请的另一个实施例的换热器中待弯曲段平移后的示意图。
图7是根据本申请的再一个实施例的换热器中待弯曲段平移后的示意图。
图8是根据本申请实施例的换热器中换热管的立体示意图。
图9是根据本申请实施例的换热器中换热管的剖视图。
图10是根据本申请实施例的换热器中翅片的局部立体图。
图11是根据本申请的一个实施例的换热器的加工方法中将未弯折前的换热器固定的示意图。
图12是根据本申请的一个实施例的换热器的加工方法中将待弯曲段平移时的示意图。
图13是图12中推移装置的示意图。
图14是根据本申请的一个实施例的换热器的加工方法中将待弯曲段平移后的示意图。
图15是根据本申请的一个实施例的换热器的加工方法中将待弯曲段扭转时的示意图。
图16是根据本申请的一个实施例的换热器的加工方法中将待弯曲段扭转后的换热器的示意图。
图17是根据本申请的一个实施例的换热器的加工方法中将换热管弯折到预定角度A1的示意图。
图18是根据本申请的一个实施例的换热器的加工方法中将换热管弯折到预定角度A2的示意图。
图19是根据本申请的另一个实施例的换热器的加工方法中将换热管的待弯曲段平移后的示意图。
图20是根据本申请的另一个实施例的换热器的加工方法中将待弯曲段平移后换热管安装在第一管和第二管上的示意图。
图21是根据本申请的另一个实施例的换热器的加工方法中将待弯曲段扭转时的示意图。
图22是根据本申请的另一个实施例的换热器的加工方法中将待弯曲段扭转后的换热器的示意图。
图23是根据本申请的另一个实施例的换热器的加工方法中将换热管弯折到预定角度A1的示意图。
图24是根据本申请的另一个实施例的换热器的加工方法中将换热管弯折到预定角度A2的示意图。
附图标记：
第一管1，第二管2，换热管3，第一段31，第二段32，弯曲段33，待弯曲段34，凸出段341，第一平直段3411，第一弧形段3412，过渡段342，第二平直段3421，第二弧形段3422，翅片4，第一翅片41，第二翅片42，夹紧装置50，推移装置60，芯棒70，扭转件80。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元夹具必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
如图1-图8所示，根据本申请的实施例的换热器包括第一管1、第二管2、多个换热管3和翅片4。
具体地，如图1所示，第一管1和第二管2并列设置，第一管1的长度和第二管2的长度相同。
多个换热管3沿第一管1的长度方向(如图1中所示的左右方向)间隔布置，换热管3连通第一管1和第二管2，换热管3为扁平状，换热管3包括沿换热管3的厚度方向(如图1中所示的左右方向)设置的第一面(如图1中换热管3的左端面)和第二面(如图1中换热管3的右端面)，换热管3包括沿换热管3的宽度方向(如图2中所示的前后方向)设置的第三面(如图2中换热管3的前端面)和第四面(如图2中换热管3的后端面)，第一面与第三面相交处为第一侧边。参考如图3和图4所示的换热器中换热管3未弯折时的示意图，换热管3的前端和第一管1连通，换热管3的后端和第二管2连通。
换热管3包括在第一管1的长度方向上平行设置的第一面(如图1中换热管3的左侧面)和第二面(如图1中换热管3的右侧面)。参考如图3-图9所示的换热器中换热管3未弯折时的示意图，换热管3大体为扁平状，换热管3具有沿前后方向延伸的长度、沿左右方向延伸的厚度和沿垂直于图3所示页面延伸的宽度，且满足换热管3的长度＞换热管3的宽度＞换热管3的厚度。
换热管3包括第一段31、弯曲段33和第二段32。换热管3的第一段31的一端(如图1中第一段31的下端)与弯曲段33的一端相连，第一段31的另一端(如图1中第一段31的上端)与第一管1连通，换热管3的第二段32的一端(如图1中第二段32的下端)与 弯曲段33的另一端相连，第二段32的另一端(如图1中第二段32的上端)与第二管2连通。如图2所示，第一段31的长度方向和第二段32的长度方向成夹角，在弯曲段33的厚度方向上相邻的弯曲段33间隔设置。
翅片4包括第一翅片41和第二翅片42，第一翅片41设置于在第一管1的长度方向上相邻第一段31之间，第二翅片42设置于在第一管1的长度方向上相邻第二段32之间，在第一管1的长度方向上相邻弯曲段33之间无翅片设置。
参考如图4所示的换热器中换热管3未弯折时的示意图，换热器的弯曲段33在折弯前包括待弯曲段34，待弯曲段34包括凸出段341和至少两个过渡段342。凸出段341的一端(如图4中凸出段341的前端)与一个过渡段342的一端(如图4中一个过渡段342的后端)相连，该一个过渡段342的另一端(如图4中一个过渡段342的前端)与第一段31的一端(如图4中第一段31的后端)相连，凸出段341的另一端(如图4中凸出段341的后端)与另一个过渡段342的一端(如图4中另一个过渡段342的前端)相连，该另一个过渡段342的另一端(如图4中另一个过渡段342的后端)与第二段32的一端(如图4中第二段32的前端)相连。
弯曲段33在折弯前，定义平行于第一管1的长度方向且平行于第一段31的长度方向，同时垂直于第一段31的宽度方向(如图4中垂直于页面的方向)的平面为第一平面(如图4中平行于页面的平面)。
在第一平面内，换热管3的凸出段341的第一侧边(如图4中凸出段341的左侧边)的投影线与该换热管3的第一段31的第一侧边(如图4中第一段31的左侧边)的投影线不共线，且一个换热管3的凸出段341的第一侧边的投影线到该换热管3的第一段31的第一侧边的投影线的最小距离为H，该换热管3的第一段31的第一侧边的投影线到在第一管1的长度方向上相邻的另一个换热管3的第一段31的第一侧边的投影线的最小距离为L，且满足H大于等于L。
根据本申请的实施例的换热器，通过在相邻换热管的第一段之间设置第一翅片，以及在相邻换热管的第二段之间设置第二翅片，使得多个换热管沿第一管的长度方向以相同的间隔并列设置，并与第一管和第二管连通。相邻换热管之间的间距为L，将换热管的弯曲段在折弯前沿第一管的长度方向平移H距离，且满足H大于等于L，再将换热管进行弯折。
换热器在折弯前对待弯曲段设计出凸出段，且凸出端的凸出距离大于相邻的第一段的间距，使得折弯后相邻换热管的弯曲段间隔布置，相邻弯曲段之间不接触，减少折弯过程中相邻弯曲段相互摩擦的风险，提高了换热管的可靠性。
在某些应用中，换热管的表面设有含锌的材料层以增加换热管的耐腐蚀性，弯曲段间隔设置也减少了折弯过程中相邻弯曲段表面相互摩擦，破坏锌层的风险。在换热器使用过 程中，由于换热管的弯曲段之间有足够的间隙，没有搭接段，减少了水分和灰尘等在弯曲段的堆积，减少了弯曲段的腐蚀风险。由于弯曲段没有翅片设置，弯曲段相比于第一段和第二段属于抗腐蚀较弱的区域，因此降低弯曲段的耐腐蚀风险，有利于换热器整体可靠性和使用寿命的提高。
在某些应用中，换热器表面需要加工覆盖上(电镀或者喷涂)防腐层，弯曲段可以完全覆盖防腐层材料，提高换热器的耐腐蚀性。
在一些实施例中，如图2和图5所示，H小于5倍的Tw，其中，Tw为换热管3的宽度。可以理解的是，换热管3中待弯曲段34平移的距离H与换热管3本身的宽度相关联，换热管3的宽度越宽，待弯曲段34需要平移的距离越大，但待弯曲段34平移的距离对于换热器整体的换热效率具有负面的影响，因此，H＜5Tw。
在一些实施例中，如图5所示，H大于等于1.5倍的L。由此，在换热管3弯折后，第一段31和第二段32沿上下方向延伸，弯曲段33从上向下延伸并向左倾斜，由此，折弯后在左右方向上相邻的弯曲段33间隔布置，提高了换热管3的可靠性。
在一些实施例中，弯曲段33折弯前，凸出段341至少包括部分第一平直段3411，第一平直段3411的长度方向(如图4中所示的前后方向)与第一段31的长度方向(如图4中所示的前后方向)大体平行，多个换热管3从其第一段31的第一面到其第一平直段3411的第一面的方向一致。
如此可以使折弯后的弯曲段向同一方向倾斜，提高换热器的结构紧凑性。当然，在某些实施例中，多个换热管3从其第一段31的第一面到其第一弧形段3412的第一面的方向也可以不一致，折弯后换热管分别向相对的不同方向倾斜，弯曲段间隔布置有利于控制弯曲段在左右方向上的尺寸，换热器结构紧凑。
如图4和图5所示，第一平直段3411沿前后方向延伸，第一段31沿前后方向延伸，第一平直段3411的长度方向与第一段31的长度方向大体平行。在多个换热管3中，多个待弯曲段34均沿从右向左的方向平移相同的距离。
在一些实施例中，第一平直段3411在折弯前的长度为C，换热管3的弯曲段33在折弯前换热管3的长度为A，且C小于等于0.5倍的A。
如图3-图5所示，换热管3中待弯曲段34未发生平移时，换热管3沿前后方向平直地延伸，换热管3的长度为A。换热管3中待弯曲段34发生平移后，第一平直段3411在折弯前的长度为C，且满足C小于等于0.5倍的A。由此，在待弯曲段34发生平移时，可以减小换热管3位移时的阻力，从而减小换热管3的受力，减少对换热管3分别与第一管1和第二管2的连接处的影响，提高换热管3的可靠性。同时由于弯曲段的换热管之间有足够的间隙，减少了使用过程中水分和灰尘的堆积。进一步地，第一平直段带来的折弯之 后折弯段顶部更趋平坦，有利于水分排出，在某些作为蒸发器或者热泵使用的系统中，可以减少或者避免风吹水，提高了使用性能。
在一些实施例中，弯曲段33折弯前，凸出段341至少包括部分第一弧形段3412，多个换热管3从其第一段31的第一面到其第一弧形段3412的第一面的方向一致。如图3和图6所示，在多个换热管3中，多个待弯曲段34均沿从右向左的方向平移相同的距离，由此，多个换热管3从其第一段31的第一面到其第一弧形段3412的第一面的方向一致。
在另一些可选地实施例中，如图3和图7所示，第一弧形段3412的前端和第一段31相连，第一弧形段3412的后端和第二段32相连。在多个换热管3中，多个待弯曲段34均沿从右向左的方向平移相同的距离，由此，多个换热管3从其第一段31的第一面到其第一弧形段3412的第一面的方向一致。
在一些实施例中，过渡段342至少包括部分第二平直段3421，第二平直段3421的长度方向与第一段31的长度方向之间成夹角，或者，过渡段342至少包括部分第二弧形段3422。
如图4、5和6所示，第一段31和第二段32均沿前后方向延伸，一个第二平直段3421的前端和第一段31的后端相连，该一个第二平直段3421的后端沿从前向后的方向向左倾斜，另一个第二平直段3421的后端和第二段32的前端相连，该另一个第二平直段3421的前端从后向前延伸并向左倾斜。
在另一些可选地实施例中，如图3和图7所示，第一弧形段3412的前端通过一个第二弧形段3422和第一段31相连，第一弧形段3412的后端通过另一个第二弧形段3422和第二段32相连。
在一些实施例中，第一翅片41为沿换热管3的第一段31长度方向延伸的波纹状翅片，和/或第二翅片42为沿换热管的第二段32长度方向延伸的波纹状翅片，第一翅片41的密度与第二翅片42的密度不同。
如图3和图4所示，第一翅片41由多个相同的子翅片组成，多个子翅片依次首尾相连组成波纹状的第一翅片41。第一翅片41设在相邻的第一段31之间，第一翅片41用于固定在左右方向上相邻的两个第一段31，使得相邻的第一段31之间的相对位置稳定，并提高换热器的换热性能。
第二翅片42由多个相同的子翅片组成，多个子翅片依次首尾相连组成波纹状的第二翅片42。第二翅片42设在相邻的第二段32之间，第二翅片42用于固定在左右方向上相邻的两个第二段32，使得相邻的第二段32之间的相对位置稳定，并提高换热器的换热性能。
第一翅片41中多个子翅片的密度和第二翅片42中多个子翅片的密度，开窗数量以及开窗角度等可以相同，也可以不同。翅片4可以增大相邻的换热管3之间的换热面积，提 高换热器的换热效率。
在一些实施例中，第一翅片41为沿换热管3的第一段31的厚度方向延伸的插片翅片，和/或第二翅片42为沿换热管3的第二段32的厚度方向延伸的插片翅片。
下面参考附图1-图5和图8描述根据本申请的一些具体示例性的换热器。
如图1-图5、和图8所示，根据本申请实施例的换热器包括第一管1、第二管2、多个换热管3和翅片4。
第一管1和第二管2沿左右方向并列设置，第一管1的长度和第二管2的长度相同。
多个换热管3沿左右方向间隔布置在第一管1和第二管2之间。
换热管3包括第一段31、弯曲段33和第二段32。第一段31的下端与弯曲段33的一端相连，第一段31的上端与第一管1连通，换热管3的第二段32的下端与弯曲段33的另一端相连，第二段32的上端与第二管2连通。第一段31的长度方向和第二段32的长度方向成夹角，在左右方向上相邻的弯曲段33间隔设置。
弯曲段33在折弯前包括待弯曲段34，待弯曲段34包括凸出段341和至少两个过渡段342。凸出段341的前端与一个过渡段342的后端相连，一个过渡段342的前端与第一段31的后端相连，凸出段341的后端与另一个过渡段342的前端相连，另一个过渡段342的后端与第二段32的前端相连。
换热管3为扁平状，换热管3包括沿左右方向上设置的左端面和第二面右端面，换热管3包括沿前后方向设置的前端面和后端面，该左端面与该前端面相交处为第一侧边。。弯曲段33在折弯前，定义平行于图4中所示页面的平面为第一平面。在第一平面内，换热管3的凸出段341的第一侧边的投影线与该换热管3的第一段31的第一侧边的投影线不共线，且一个换热管3的凸出段341的第一侧边的投影线到该换热管3的第一段31的第一侧边的投影线所在的直线的最小距离为H，该换热管3的第一段31的第一侧边的投影到在第一管1的长度方向上相邻的另一个换热管3的第一段31的第一侧边的投影之间的最小距离为L，且满足H大于等于L。凸出段341包括第一平直段3411。第一平直段3411沿前后方向延伸，第一段31沿前后方向延伸，第一平直段3411的长度方向与第一段31的长度方向大体平行。
过渡段342包括第二平直段3421。第一段31和第二段32均沿前后方向延伸，一个第二平直段3421的前端和第一段31的后端相连，该一个第二平直段3421的后端从前向后延伸并向左倾斜，另一个第二平直段3421的后端和第二段32的前端相连，该另一个第二平直段3421的前端从后向前延伸并向左倾斜。
翅片4包括第一翅片41和第二翅片42。
第一翅片41由多个相同的子翅片组成，多个子翅片依次首尾相连组成波纹状的第一翅 片41。第一翅片41设在相邻的第一段31之间，第一翅片41用于固定2个相邻的第一段31。
第二翅片42由多个相同的子翅片组成，多个子翅片依次首尾相连组成波纹状的第二翅片42。第二翅片42设在相邻的第二段32之间，第二翅片42用于固定2个相邻的第二段32。
下面参考附图1和图6描述根据本申请的另一些示例性的换热器。
如图1和图6所示，换热器包括第一管1、第二管2、多个换热管3和翅片4。
凸出段341包括第一弧形段3412，过渡段342包括两个第二平直段3421。
第一弧形段3412的前端和一个第二平直段3421的后端相连，该一个第二平直段3421的前端和第一段31的后端相连，第一弧形段3412的后端和另一个第二平直段3421的前端相连，该另一个第二平直段3421的后端和第二段32的前端相连。
图1和图6所示的换热器的其他结构可以与图2-5和8所示实施例相同，这里不再详细描述。
下面参考附图1和图7描述根据本申请的再一些示例性的换热器。
如图1和图7所示，换热器包括第一管1、第二管2、多个换热管3和翅片4。
凸出段341包括第一弧形段3412，过渡段342包括两个第二弧形段3422。
第一弧形段3412的前端和一个第二弧形段3422的后端相连，该一个第二弧形段3422的前端和第一段31的后端相连，第一弧形段3412的后端和另一个第二弧形段3422的前端相连，该另一个第二弧形段3422的后端和第二段32的前端相连。
图1和图7所示的换热器的其他结构可以与图2-5和8所示实施例相同，这里不再详细描述。
如图11-图18所示，根据本申请的实施例1的换热器的加工方法包括如下步骤：
准备待加工的换热器，待加工的换热器包括第一管1、第二管2、多个换热管3和翅片4。多个换热管3沿第一管1的长度方向(如图11中所示的左右方向)间隔布置，换热管3连通第一管1和第二管2。换热管3包括在第一管1的长度方向上平行设置的第一面(如图11中换热管3的左侧面)和第二面(如图11中换热管3的右侧面)。
换热管3包括第一段31、待弯曲段34和第二段32。第一段31的一端(如图11第一段31的后端)与待弯曲段34的一端(如图11中待弯曲段34的前端)相连，第一段31的另一端(如图11第一段31的前端)与第一管1连通，第二段32的一端(如图11第二段32的前端)与待弯曲段34的另一端(如图11中待弯曲段34的后端)相连，第二段32的另一端(如图11第二段32的后端)与第二管2连通。
翅片4包括第一翅片41和第二翅片42，第一翅片41设置于在第一管1的长度方向上 相邻第一段31之间，第二翅片42设置于在第一管1的长度方向上相邻第二段32之间，在第一管1的长度方向上相邻待弯曲段34之间无翅片设置。
沿第一管1的长度方向将换热管3的待弯曲段34的部分管段相对于换热管3的第一段31和第二段32平移预设距离，以使平移后的待弯曲段34的该部分管段在第一管1的长度方向上偏离该换热管3的第一段31。
第一管1朝向第二管2移动，第二管2朝向第一管1移动。
待弯曲段34的部分管段平移预设距离之后，弯曲换热管3的待弯曲段34，使其在长度方向上发生弯曲，同时换热管3的第一段31和第二段32之间的夹角减小到预定角度。
如图11和图12所示，准备待加工的换热器，可以通过夹紧装置50固定第一管1和第二管2。具体地，夹紧装置50的数量为至少两个，至少两个夹紧装置50设置在第一管1和第二管2上，至少两个夹紧装置50将待加工的换热器固定在工作台上限制换热器在第一管1长度方向上的移动。在某些实施例中，也可以不固定待加工的换热器，或者不使用夹紧装置，如此有利于后续折弯工序中换热器的移动。
在一些实施例中，沿与第一管1的长度方向依次将多个待弯曲段34中的至少一个的部分管段相对于第一段31和第二段32平移预设距离，或者，沿与第一管1的长度方向同时将多个待弯曲段34的部分管段相对于第一段31和第二段32平移预设距离，预设距离大于或者等于在第一管1的长度方向上相邻第一段31之间的间距。
在一些实施例中，可以使用装置来实现多个换热管的平移。如图12-图14所示，将待加工的换热器固定后，将推移装置60插入第一管1长度方向上相邻的待弯曲段34之间。沿左右方向水平移动推移装置60，使得待弯曲段34中的部分管段相对于第一段31和第二段32水平移动预设距离。
通过推移装置60推动待弯曲段34时，为减小待弯曲段34受到的推移力，防止待弯曲段34的不规则变形，推移装置60可以是单个待弯曲段34依次步进推移，也可以是多个待弯曲段34中的多组待弯曲段34依次步进推移，其中每一组待弯曲段34包括至少两个待弯曲段34。
在一些具体实施例中，取待弯曲段34长度方向上的中点，沿左右方向将待弯曲段34的中点水平向左平移，得到第一弧形段3412、位于第一弧形段3412前端的一个第二平直段3421和位于第一弧形段3412后端的另一个第二平直段3421。第一弧形段3412和两个第二平直段3421的横截面的外周轮廓近似为V或者U字形。
在另一些具体实施例中，在待弯曲段34的中点附近，沿左右方向将待弯曲段34的中点水平向左平移，得到第一弧形段3412、位于第一弧形段3412前端的一个第二弧形段3422和位于第一弧形段3412后端的另一个第二弧形段3422。可以理解的是，也可以取待弯曲 段34其他位置进行平移，得到第一弧形段3412和第二弧形段3422。
在一些实施例中，在弯曲换热管3的待弯曲段34之前，沿第一管1的长度方向相对于换热管3的第一段31和第二段32扭转待弯曲段34，以使换热管3的待弯曲段34的第一面与换热管3的第一段31的第一面之间的夹角大于0度且小于等于90度。
如图15和图16所示，在待弯曲段34中的部分管段水平移动预设距离后，对待弯曲段34中的部分管段进行扭转。
确定待弯曲段34的扭转位置，将扭转件80置于扭转位置的下侧且紧贴多个待弯曲段34的下表面。再将扭转件80沿着第一管1的长度方向(如图11中所示的左右方向)依次与多个待弯曲段34的部分表面接触，以将待弯曲段34扭转至一定角度，使得换热管3的待弯曲段34相对于第一段31和第二段32发生倾斜，以使换热管3的待弯曲段34的第一面与换热管3的第一段31的第一面之间的夹角大于0度且小于等于90度。
在一些实施例中，弯曲换热管3的待弯曲段34时，将芯棒70放置于待弯曲段34上，且芯棒70抵靠在待弯曲段34的部分管段上。可以理解的，芯棒可以使弯曲段的换热管变形受控，但是不使用芯棒70也可以完成折弯。
如图17所示，找准待弯曲段34的扭转位置，将芯棒70置于扭转位置的上侧且抵靠在多个待弯曲段34的上表面。同时向上移动两侧的第一管1和第二管2，以减小第一段31和第二段32之间的夹角，使得待弯曲段34的部分管段向芯棒70的外周面靠近。
在一些实施例中，弯曲换热管的带弯曲段34时，将芯棒放置在待弯曲段34上，待弯曲段34的换热管没有进行扭转，芯棒70抵靠在待弯曲段34的部分管段的宽度方向设置的一个表面上。同时向上移动两侧的第一管1和第二管2，以减小第一段31和第二段32之间的夹角，使得待弯曲段34的部分管段芯棒70的外周面靠近。
在一些实施例中，步骤弯曲换热管3的待弯曲段34包括以下分步骤：弯曲换热管3的待弯曲段34以将第一段31的长度方向和第二段32的长度方向之间的角度折弯至预设角度A1。抽出芯棒70，继续弯曲换热管3的待弯曲段34以将第一段31的长度方向和第二段32的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
在另一些实施例中，抽出芯棒之后，可以整体或者部分地推动待弯曲段34的换热管向左倾斜，然后在继续弯曲换热管3的待弯曲段34以将第一段31的长度方向和第二段32的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
如图17所示，同步向上移动夹紧装置50以弯折换热管3的待弯曲段34，使得第一段31和第二段32相互靠近，第一段31的长度方向和第二段32的长度方向之间的夹角为A1。具体地，A1的范围可以为：60°≤A1≤135°。
如图18所示，首先抽出芯棒70，然后继续向上移动夹紧装置50进一步弯折换热管3 的待弯曲段34，使得第一段31和第二段32进一步靠近，第一段31的长度方向和第二段32的长度方向之间的夹角为A2。具体地，A2≥0°，且A2小于A1。
如图19-图24所示，根据本申请的另一个实施例的换热器的加工方法包括如下步骤：
沿换热管3的厚度方向(如图19中所示的左右方向)将一个或多个换热管3的部分管段相对于该换热管3的第一端(如图19中换热管3的前端)和第二端(如图19中换热管3的后端)平移预设距离，以使平移后的换热管3的该部分管段在换热管3的厚度方向上凸出于该换热管3的第一端和第二端。如图19所示，将换热管3的中间段从右向左平移H距离。
将多个换热管3沿换热管3的厚度方向间隔布置，长度方向上的两端分别与第一管1和第二管2配合安装，且多个换热管3的部分管段在第一管1的长度方向上凸出于相应换热管3的第一端和第二端的方向相同。将多个换热管3的一端(如图20中换热管3的前端)与第一管1固定连接以及多个换热管3的另一端(如图20中换热管3的后端)与第二管2固定连接，多个换热管3的凸出部分在第一管1的长度方向上对齐。
如图20所示，将多个图19中所示的换热管3间隔地布置在第一管1和第二管2之间，多个换热管3的凸出部分均从右向左凸出。优选地，多个换热管3之间的间隔一致。
在换热管3的厚度方向上，相邻换热管3之间设置第一翅片41和第二翅片42，相邻换热管3的凸出部分之间不设置翅片4。
其中换热管3上与第一翅片41连接的一段为第一段31，换热管3上与第二翅片42连接的一段为第二段32，且换热管3上与第一翅片41及第二翅片42均不连接的部分为待弯曲段34。
在一些实施例中，换热器的加工方法还包括以下步骤：固定连接换热管3与第一管1，固定连接换热管3与第二管2，固定连接换热管3与第一翅片41，固定连接换热管3与第二翅片42。
如图19所示，多个换热管3沿左右方向延伸，将换热管3的左端和第一管1固定相连，将换热管3的右端和第二管2固定相连，且多个换热管3沿左右方向均匀布置。在相邻的换热管3的第一段31之间设置第一翅片41，在相邻的换热管3的第二段32之间设置第一翅片42。
在一些实施例中，换热器的加工方法还包括以下步骤：弯曲换热管3的待弯曲段34，使其在长度方向上发生弯曲，同时换热管的第一段31和第二段32之间的夹角减小到预定角度。
如图20、19和20所示，向上移动第一管1和第二管2，使得待弯曲段34发生弯曲，同时换热管的第一段31和第二段32之间的夹角减小到预定角度。
在一些实施例中，换热管3包括在第一管1的长度方向上平行设置的第一面(如图20中换热管3的左侧面)和第二面(如图20中换热管3的右侧面)，在弯曲换热管3的待弯曲段34之前，沿第一管1的长度方向相对于换热管3的第一段31和第二段32扭转凸出管段，以使凸出管段的第一面与第一段31的第一面之间的夹角大于0度且小于等于90度。
如图21和图30所示，在待弯曲段34中的部分管段水平移动预设距离后，对待弯曲段34中的部分管段进行扭转。具体地，取待弯曲段34的扭转位置，将扭转件80置于扭转中心位置的下侧且紧贴多个待弯曲段34的下表面。再将扭转件80沿着第一管1的长度方向(如图20中所示的左右方向)滚过多个待弯曲段34，以将待弯曲段34扭转至一定角度，使得换热管3的待弯曲段34相对于第一段31和第二段32发生倾斜，以使换热管3的待弯曲段34的第一面与换热管3的第一段31的第一面之间的夹角大于0度且小于等于90度。
在一些实施例中，弯曲换热管3的凸出管段时，将芯棒70放置于凸出管段上，且芯棒70抵靠部分管段；弯曲换热管3的凸出管段以将第一段31的长度方向和第二段32的长度方向之间的角度折弯至预设角度A1；抽出芯棒70；继续弯曲换热管3的凸出管段以将第一段31的长度方向和第二段32的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
如图23所示，取待弯曲段34的扭转位置，将芯棒70置于扭转位置的上侧且抵靠在多个待弯曲段34的上表面。同时向上移动待弯曲段34两侧的第一管1和第二管2，使得待弯曲段34的部分管段靠近芯棒70的外周面。
如图23所示，同步向上移动第一管1和第二管2以弯折换热管3的待弯曲段34，使得第一段31和第二段32相互靠近，第一段31的长度方向和第二段32的长度方向之间的夹角为A1。具体地，A1的范围可以为：60°≤A1≤135°。
如图24所示，首先抽出芯棒70，然后继续向上移动第一管1和第二管2进一步弯折换热管3的待弯曲段34，使得第一段31和第二段32进一步靠近，第一段31的长度方向和第二段32的长度方向之间的夹角为A2。具体地，A2≥0°，且A2小于A1。
在一些实施例中，在弯曲待折弯段34时，无论是第一段31和第二段32弯曲到A 1角度还是A2角度，不需要同时移动第一管1和第二管2，可以固定第一管1和第一段31，经移动第二管2和第二段32向上和向第一管1和第一段31靠近，以实现第一段31和第二段32之间预定的角度。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特 点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
在本申请的描述中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (19)

  1. 一种换热器，其特征在于，包括：
    第一管和第二管；
    多个换热管，多个所述换热管沿所述第一管的长度方向间隔布置，所述换热管连通所述第一管和第二管，所述换热管为扁平状，所述换热管包括沿所述换热管的厚度方向设置的第一面和第二面，所述换热管包括沿所述换热管的宽度方向设置的第三面和第四面，所述第一面与所述第三面相交处为第一侧边，所述换热管包括第一段、弯曲段和第二段，所述换热管的第一段的一端与所述弯曲段的一端相连，所述第一段的另一端与所述第一管连通，所述换热管的第二段的一端与所述弯曲段的另一端相连，所述第二段的另一端与所述第二管连通，所述第一段的长度方向和所述第二段的长度方向成夹角，在所述弯曲段的厚度方向上相邻的所述弯曲段间隔设置；
    翅片，所述翅片包括第一翅片和第二翅片，所述第一翅片设置于在所述第一管的长度方向上相邻所述第一段之间，所述第二翅片设置于在所述第一管的长度方向上相邻所述第二段之间，在所述第一管的长度方向上相邻所述弯曲段之间无翅片设置；
    所述换热器的弯曲段在折弯前包括待弯曲段，所述待弯曲段包括凸出段和至少两个过渡段，所述凸出段的一端与一个所述过渡段的一端相连，该一个过渡段的另一端与所述第一段的一端相连，所述凸出段的另一端与另一个所述过渡段的一端相连，该另一个过渡段的另一端与所述第二段的一端相连；
    所述弯曲段在折弯前，定义平行于所述第一管的长度方向且平行于所述第一段的长度方向，同时垂直于所述第一段的宽度方向的平面为第一平面，在所述第一平面内，所述换热管的所述凸出段的第一侧边的投影线与该换热管的所述第一段的第一侧边的投影线不共线，且一个所述换热管的所述凸出段的第一侧边的投影线到该换热管的所述第一段的第一侧边的投影线的最小距离为H，该换热管的所述第一段的第一侧边的投影线到在所述第一管的长度方向上相邻的另一个所述换热管的第一段的第一侧边的投影线的最小距离为L，且满足H大于等于L。
  2. 根据权利要求1所述的换热器，其特征在于，所述H小于5倍的Tw，其中，所述Tw为所述换热管的宽度。
  3. 根据权利要求1或2所述的换热器，其特征在于，所述H大于等于1.5倍的L。
  4. 根据权利要求1-3中任一项所述的换热器，其特征在于，所述换热器在所述弯曲段折弯前，所述凸出段至少包括部分第一平直段，所述第一平直段的长度方向与所述第一段的长度方向大体平行，多个所述换热管从其第一段的第一面到其第一平直段的第一面的方 向一致。
  5. 根据权利要求4所述的换热器，其特征在于，所述第一平直段在折弯前的长度为C，所述换热管的弯曲段在折弯前换热管的长度为A，且C小于等于0.5倍的A。
  6. 根据权利要求1-3中任一项所述的换热器，其特征在于，所述换热器在所述弯曲段折弯前，所述凸出段至少包括部分第一弧形段，多个所述换热管从其第一段的第一面到其第一弧形段的第一面的方向一致。
  7. 根据权利要求4或5所述的换热器，其特征在于，所述过渡段至少包括部分第二平直段，所述第二平直段的长度方向与所述第一段的长度方向之间成夹角，或者，所述过渡段至少包括部分第二弧形段。
  8. 根据权利要求1-3中任一项所述的换热器，其特征在于，所述第一翅片为沿所述换热管的第一段长度方向延伸的波纹状翅片，和/或所述第二翅片为沿所述换热管的第二段长度方向延伸的波纹状翅片，所述第一翅片的密度与第二翅片的密度不同。
  9. 根据权利要求1-3中任一项所述的换热器，其特征在于，所述第一翅片为沿所述换热管的第一段的厚度方向延伸的插片翅片，和/或所述第二翅片为沿所述换热管的第二段的厚度方向延伸的插片翅片。
  10. 一种换热器的加工方法，其特征在于，包括如下步骤：
    准备待加工的换热器，所述待加工的换热器包括第一管、第二管、多个换热管和翅片，多个所述换热管沿所述第一管的长度方向间隔布置，所述换热管连通所述第一管和第二管，所述换热管包括在所述第一管的长度方向上平行设置的第一面和第二面，所述换热管包括第一段、待弯曲段和第二段，所述第一段的一端与所述待弯曲段的一端相连，所述第一段的另一端与所述第一管连通，所述第二段的一端与所述待弯曲段的另一端相连，所述第二段的另一端与所述第二管连通，所述翅片包括第一翅片和第二翅片，所述第一翅片设置于在所述第一管的长度方向上相邻所述第一段之间，所述第二翅片设置于在所述第一管的长度方向上相邻所述第二段之间，在所述第一管的长度方向上相邻所述待弯曲段之间无翅片设置；
    沿所述第一管的长度方向将所述换热管的待弯曲段的部分管段相对于所述换热管的第一段和第二段平移预设距离，以使平移后的所述待弯曲段的该部分管段在所述第一管的长度方向上偏离该换热管的所述第一段；
    所述第一管朝向所述第二管移动，所述第二管朝向所述第一管移动；
    所述待弯曲段的部分管段平移预设距离之后，弯曲所述换热管的待弯曲段，使其在长度方向上发生弯曲，同时所述换热管的第一段和第二段之间的夹角减小到预定角度。
  11. 根据权利要求10所述的换热器的加工方法，其特征在于，沿与所述第一管的长度 方向依次将多个所述待弯曲段中的至少一个的部分管段相对于所述第一段和第二段平移预设距离，或者，沿与所述第一管的长度方向同时将多个所述待弯曲段的部分管段相对于所述第一段和第二段平移预设距离，所述预设距离大于或者等于在所述第一管的长度方向上相邻所述第一段之间的间距。
  12. 根据权利要求10所述的换热器的加工方法，其特征在于，在弯曲所述换热管的待弯曲段之前，
    沿所述第一管的长度方向相对于所述换热管的第一段和第二段扭转所述待弯曲段，以使所述换热管的待弯曲段的第一面与所述换热管的第一段的第一面之间的夹角大于0度且小于等于90度。
  13. 根据权利要求10-12中任一项所述的换热器的加工方法，其特征在于，弯曲所述换热管的待弯曲段时，将芯棒放置于所述待弯曲段上，且所述芯棒抵靠在所述待弯曲段的所述部分管段上。
  14. 根据权利要求13所述的换热器的加工方法，其特征在于，步骤弯曲所述换热管的待弯曲段包括以下分步骤：
    弯曲所述换热管的待弯曲段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至预设角度A1；
    抽出所述芯棒；
    继续弯曲所述换热管的待弯曲段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
  15. 一种换热器的加工方法，其特征在于，包括如下步骤：
    沿换热管的厚度方向将一个或多个所述换热管的部分管段相对于该换热管的第一端和第二端平移预设距离，以使平移后的所述换热管的该部分管段在所述换热管的厚度方向上凸出于该换热管的第一端和第二端；
    将多个所述换热管沿所述换热管的厚度方向间隔布置，且多个换热管的部分管段在所述第一管的长度方向上凸出于相应换热管的第一端和第二端的方向相同；
    将多个所述换热管的一端与第一管固定连接以及多个所述换热管的另一端与第二管固定连接，多个所述换热管的凸出部分在所述第一管的长度方向上对齐；
    在所述换热管的厚度方向上，相邻所述换热管之间设置第一翅片和第二翅片，相邻所述换热管的凸出部分之间不设置翅片；
    其中所述换热管上与所述第一翅片连接的一段为第一段，所述换热管上与所述第二翅片连接的一段为第二段，且所述换热管上与第一翅片及第二翅片均不连接的部分为待弯曲段。
  16. 根据权利要求15所述的换热器的加工方法，其特征在于，还包括以下步骤：固定连接所述换热管与所述第一管，固定连接所述换热管与所述第二管，固定连接所述换热管与所述第一翅片，固定连接所述换热管与所述第二翅片。
  17. 根据权利要求15或16所述的换热器的加工方法，其特征在于，还包括以下步骤：
    弯曲所述换热管的所述待弯曲段，使其在长度方向上发生弯曲，同时所述换热管的第一段和第二段之间的夹角减小到预定角度。
  18. 根据权利要求17所述的换热器的加工方法，其特征在于，所述换热管包括在所述第一管的长度方向上平行设置的第一面和第二面，
    在弯曲所述换热管的所述待弯曲段之前，沿所述第一管的长度方向相对于所述换热管的第一段和第二段扭转所述凸出管段，以使所述部分凸出管段的第一面与所述第一段的第一面之间的夹角大于0度且小于等于90度。
  19. 根据权利要求18所述的换热器的加工方法，其特征在于，弯曲所述换热管的所述凸出管段时，将芯棒放置于所述凸出管段上，且所述芯棒抵靠所述凸出管段；
    弯曲所述换热管的所述凸出管段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至预设角度A1；
    抽出所述芯棒；
    继续弯曲所述换热管的所述凸出管段以将所述第一段的长度方向和所述第二段的长度方向之间的角度折弯至目标角度A2，A2≥0°，且A2小于A1。
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