WO2020239121A1 - 用于换热器折弯的装置和换热器的折弯方法 - Google Patents

用于换热器折弯的装置和换热器的折弯方法 Download PDF

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Publication number
WO2020239121A1
WO2020239121A1 PCT/CN2020/093678 CN2020093678W WO2020239121A1 WO 2020239121 A1 WO2020239121 A1 WO 2020239121A1 CN 2020093678 W CN2020093678 W CN 2020093678W WO 2020239121 A1 WO2020239121 A1 WO 2020239121A1
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WO
WIPO (PCT)
Prior art keywords
support
supporting
bending
heat exchange
heat exchanger
Prior art date
Application number
PCT/CN2020/093678
Other languages
English (en)
French (fr)
Inventor
童仲尧
杨永龙
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 US17/614,888 priority Critical patent/US20220234092A1/en
Priority to JP2021571016A priority patent/JP7267464B2/ja
Priority to EP20815482.3A priority patent/EP3978158A4/en
Publication of WO2020239121A1 publication Critical patent/WO2020239121A1/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
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length

Definitions

  • This application belongs to the technical field of heat exchange equipment, and specifically relates to a device for bending a heat exchanger and a method for bending the heat exchanger.
  • Heat exchangers are widely used in heat exchange systems such as heat pumps and air conditioners.
  • the heat exchanger In order to increase the heat exchange area, the heat exchanger usually adopts a double row or more rows in series and is bent.
  • the bending radius between the inner row of heat exchange tube sections close to the center of curvature and the outer row of heat exchange tube sections away from the center of curvature are different. Therefore, compared to the flat state, the heat exchange of different rows is different. Relative movement of the pipe sections during the bending process makes it difficult to maintain the same distance between the different areas of the two adjacent heat exchange pipe sections, which affects the shape and heat exchange effect of the entire heat exchanger after forming, and there is room for improvement.
  • the embodiment of the present application proposes a device for bending a heat exchanger, the device includes: a plurality of support members, the plurality of support members are arranged at intervals along the longitudinal direction, each of the support members includes a first support plate , A second support plate and a connecting plate connected between the first support plate and the second support plate, the first support plate and the second support plate are spaced apart along the lateral direction, the first support The plate has a first supporting surface that faces away from the second supporting plate in the lateral direction and is used to abut the heat exchanger, and the second supporting plate has a first supporting surface that faces away from the first supporting plate in the lateral direction and is used On the second supporting surface abutting against the heat exchanger, the distance between the first supporting surface and the second supporting surface does not change during the process of bending the heat exchanger, and in any two supporting parts, The distance between the first supporting surface and the second supporting surface of any one supporting member and the distance between the first supporting surface and the second supporting surface of the other supporting member are equal to each other;
  • the device for bending the heat exchanger of the present application can provide a fixed support between the multiple rows of heat exchange tube sections during the bending process, ensure the overall size of the heat exchanger after bending, and help improve The efficiency and quality of the bending process.
  • first supporting surface and the second supporting surface are arc-shaped, and the first supporting surface and the second supporting surface of the same supporting member protrude in a direction away from each other.
  • the distance between the first support plate and the second support plate of the same support member is adjustable.
  • the connecting plate includes a first fixing section, a second fixing section, and an adjusting section connected between the first fixing section and the second fixing section, one end of the first fixing section Is connected to the first support plate and is provided with a first opening facing the adjustment section at the other end, one end of the second fixing section is connected with the second support plate and the other end is provided with a first opening facing the adjustment section In the second opening, one end of the adjustment section is movably inserted into the first opening, and the other end of the adjustment section is movably inserted into the second opening.
  • the first fixed section and At least one of the second fixing sections is provided with a long hole extending in the transverse direction
  • the adjustment section is provided with a positioning hole that is adapted to the long hole
  • the adjustment section and the at least one fixing The segments are positioned by positioning bolts passing through the elongated holes and the positioning holes.
  • each of the first supporting plate and the second supporting plate is divided into at least two sections in its length direction, and one end of each section is provided with a concave portion and the other end is provided with the concave portion.
  • the adapted convex part is connected to each other in the length direction of the first supporting plate or the second supporting plate by the concave part of one of the concave parts and the convex part of the other part in mutual cooperation.
  • the connecting member includes an elastic member, two adjacent support members are connected by the elastic member, and the distance between the two adjacent support members is folded along the longitudinal direction in the heat exchanger. Variable during bending.
  • the elastic member is an elastic belt.
  • the connecting member includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod extend parallel to each other in the longitudinal direction and are spaced apart in the transverse direction.
  • the first connecting rod and the second connecting rod respectively pass through the connecting plates of a plurality of the supporting members, and any one of the first connecting rod and the second connecting rod is provided with two connecting plates located on each connecting plate. The side is used to position the elastic sleeve of the connecting plate.
  • the connecting member includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod extend parallel to each other in the longitudinal direction and are spaced apart in the transverse direction.
  • One end of the first connecting rod is connected to the connecting plate of the support, and the other end of the first connecting rod is connected to the connecting plate of another adjacent support in the longitudinal direction.
  • the second connecting rod One end of the second connecting rod is connected to the connecting plate of the supporting member, and the other end of the second connecting rod is connected to the connecting plate of another adjacent supporting member in the longitudinal direction.
  • the embodiment of the present application also discloses a device for bending a heat exchanger.
  • the device includes: a plurality of supporting rollers, the plurality of supporting rollers are arranged at intervals along the longitudinal direction, and each of the supporting rollers has a transverse direction A first supporting surface and a second supporting surface spaced apart and used for abutting against the heat exchanger, the distance between the first supporting surface and the second supporting surface does not change during the process of bending the heat exchanger , And in any two supporting rollers, the distance between the first supporting surface and the second supporting surface of any one supporting roller and the distance between the first supporting surface and the second supporting surface of the other supporting roller are equal to each other;
  • the connecting member connects a plurality of the supporting rollers in the longitudinal direction.
  • the support roller is a hollow cylinder, and each of the first support surface and the second support surface is formed by a part of the outer peripheral wall surface of the support roller.
  • the supporting roller has an axial hole extending along the axial direction of the supporting roller, and a first plane and a second plane spaced apart in the longitudinal direction, and the first supporting surface is connected to the first plane.
  • a plane and the second plane are formed as an arc-shaped surface protruding away from the second supporting surface along the lateral direction, and the second supporting surface is connected to the first plane and the second plane Between and formed as an arc surface protruding away from the first supporting surface along the lateral direction.
  • the connecting member is a rectangular connecting frame and includes two longitudinal rods parallel to each other and two transverse rods parallel to each other, the two longitudinal rods extend along the longitudinal direction, and the two transverse rods Extending along the axial direction of the support roller, one cross bar of each rectangular connecting frame penetrates one of the two adjacent support rollers along the axial direction of the support roller, and the other cross bar runs along the axis of the support roller. Axially penetrates another support roller.
  • the distance between two adjacent support rollers is variable along the longitudinal direction during the bending process of the heat exchanger.
  • the application also discloses a bending method of a heat exchanger, the heat exchanger comprising a first header, a second header and a plurality of heat exchange tubes, the first header and the second header
  • the two headers are arranged in parallel and adjacent to each other, the heat exchange tube is a flat tube, the first end of the heat exchange tube is connected to the first header, and the second end of the heat exchange tube is connected to the The second header is connected to communicate the first header and the second header, and a plurality of the heat exchange tubes are distributed along the length direction of the first header or the second header
  • the heat exchange tubes are arranged in parallel with each other in the length direction of the first header or the second header, fins are arranged between adjacent flat tubes, and the heat exchange tubes include bent sections And at least two rows of heat exchange tube sections that are substantially parallel in the width direction of the heat exchange tube, the bending method includes: placing the heat exchange tube sections as described in any one of the above between the at least two substantially parallel rows of heat exchange tube sections The device for bending the heat exchange tube
  • the distance between two adjacent support members or support rollers along the longitudinal direction is variable during the bending process.
  • the method further includes: before bending the at least two rows of heat exchange tube sections, positioning the heat exchanger; A bending guide is placed on the inner side of a row of heat exchange tube sections.
  • multiple devices for bending the heat exchanger are placed along the length of the header.
  • the bending method of the heat exchanger has the same advantages as the above-mentioned device over the prior art, and will not be repeated here.
  • FIG. 1 is a schematic structural diagram of a device according to a first embodiment of the present application
  • Fig. 2 is a schematic view of the end of the device of the first embodiment of the present application.
  • FIG. 3 is a schematic diagram of the structure of the device of the second embodiment of the present application.
  • Figure 4 is a partial enlarged view at D in Figure 3;
  • Fig. 5 is a schematic view of the end face of the device of the second embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a device according to a third embodiment of the present application.
  • Figure 7 is a partial enlarged view of E in Figure 6;
  • Figure 8 is a schematic diagram of the device of the first or second or third embodiment of the present application at the initial stage of bending;
  • Fig. 9 is a schematic diagram of the device of the first or second or third embodiment of the present application at the stage of completion of bending;
  • Figure 10 is a schematic diagram of the device of the first or second or third embodiment of the present application at the initial stage of bending;
  • FIG. 11 is a schematic diagram of the device of the first or second or third embodiment of the present application at the stage of completion of bending;
  • Figure 12 is a partial schematic diagram of the device of the first or second or third embodiment of the present application during use
  • FIG. 13 is a schematic structural diagram of a device according to a fourth embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a device according to a fifth embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a device according to a sixth embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a device according to a seventh embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a device according to an eighth embodiment of the present application.
  • 18 is a schematic diagram of the device of the fourth or fifth or sixth embodiment of the present application at the stage of completion of bending;
  • 19 is a schematic diagram of the device of the fourth or fifth or sixth embodiment of the present application at the initial stage of bending;
  • Fig. 20 is a schematic diagram of the device of the fourth or fifth or sixth embodiment of the present application at the stage of completion of bending.
  • Support roller 300 axial hole 301, first plane 302, second plane 303,
  • the heat exchanger includes: a first header 610, a second header 620, and a plurality of heat exchange tubes 630.
  • the axial direction of the first header 610 is parallel to the axial direction of the second header 620, the first header 610 and the second header 620 may be arranged in parallel and spaced apart from each other, and the first header 610 may be used as an inlet
  • the header, the second header 620 can be used as an outlet header, or the first header 610 can be used as an exit header, and the second header 620 can be used as an inlet header.
  • the plurality of heat exchange tubes 630 may be arranged at intervals along the axial direction of the first header 610 and the length direction of the second header 620, and the plurality of heat exchange tubes 630 are arranged in the first header 610 or the second header. 620 are arranged parallel to each other in the length direction, the first end of each heat exchange tube 630 is connected with the first header 610, and the second end of each heat exchange tube 630 is connected with the second header 620 to communicate with the first The header 610 and the second header 620, so that the heat exchange medium can be in the first header 610—heat exchange tube 630—second header 620 or second header 620—heat exchange tube 630-Circulation between the first header 610.
  • the first header 610 may be provided with a first port
  • the second header 620 may be provided with a second port.
  • the first port and the second port are used to connect to an external pipeline to connect the heat exchanger to the entire In air conditioning systems or other heat exchange systems.
  • the heat exchange tube 630 is a flat tube, and fins are arranged between adjacent flat tubes.
  • the heat exchange tube 630 includes a bent section 631 and at least two rows of heat exchange tube sections 632 that are substantially parallel in the width direction of the heat exchange tube 630.
  • the section 631 is formed by bending the heat exchange tube 630 around the length direction parallel to the first header 610, and the first heat exchange tube section 632 and the second heat exchange tube section 632 are parallel.
  • the apparatus for bending a heat exchanger has multiple support members 100 and connecting members 200.
  • a plurality of supporting members 100 are arranged at intervals along the longitudinal direction A.
  • Each supporting member 100 includes a first supporting plate 110, a second supporting plate 120, and a connecting plate 130 connected between the first supporting plate 110 and the second supporting plate 120.
  • a support plate 110 and a second support plate 120 are spaced apart along the transverse direction B.
  • the first support plate 110 has a first support surface 111 facing away from the second support plate 120 in the transverse direction B and used for abutting against the heat exchanger.
  • the supporting plate 120 has a second supporting surface 121 facing away from the first supporting plate 110 in the transverse direction B and used for abutting against the heat exchanger.
  • the distance between the first supporting surface 111 and the second supporting surface 121 is in the bending heat exchange
  • the distances between the second supporting surfaces 121 are equal to each other, and the connecting member 200 connects the plurality of supporting members 100 along the longitudinal direction A.
  • the longitudinal direction A is the length direction of the heat exchange tube 630
  • the transverse direction B is the distribution direction of at least two rows of heat exchange tube sections 632 of each heat exchange tube 630.
  • the apparatus for bending a heat exchanger of the present application is supported between two rows of heat exchange tube sections 632 by arranging a plurality of support members 100, and the first support surface 111 and the second support surface 121 of each support member 100 are The distance between the two rows of heat exchange tube sections 632 is equal, so that a fixed support is formed between the two rows of heat exchange tube sections 632 to ensure that the distance between the two rows of heat exchange tube sections 632 meets the design requirements and does not change significantly during the bending process.
  • the device of the embodiment of the present application can also be used for aligned heat exchange tube sections 632.
  • the device of the embodiment of the application can be used in a heat exchanger with a double-row heat exchange tube section 632; as shown in Figures 10 and 11, the device of the embodiment of the application can be used with multiple The heat exchanger in the two rows of heat exchange pipe sections 632.
  • the device for bending the heat exchanger of the present application can provide fixed support for the multiple rows of heat exchange tube sections 632 during the bending process, ensure the overall size of the heat exchanger after bending, and help improve the efficiency of the bending process And quality.
  • the first support surface 111 and the second support surface 121 are arc-shaped, and the first support surface 111 and the second support surface 111 of the same support 100
  • the two supporting surfaces 121 protrude in a direction away from each other.
  • the convex first support surface 111 and the second support surface 121 can ensure that during the bending process, the first support surface 111 and the second support surface 121 can always achieve effective support in at least part of the area, that is, always maintain contact and
  • the heat exchange tube section 632 is always in contact.
  • the distance between the first support plate 110 and the second support plate 120 of the same support 100 is fixed, and the device can be used to process heat exchangers of fixed size, and The device has a simple structure and low cost.
  • the distance between the first support plate 110 and the second support plate 120 of the same support 100 is adjustable, and the device can be used to process multiple types of heat exchangers
  • the distance between the first support surface 111 and the second support surface 121 can be adjusted according to the design requirements of the distance between the two rows of heat exchange tube sections 632, so that the same device can be used in multiple models of heat exchangers. Used in the production process.
  • the connecting plate 130 includes a first fixed section 131, a second fixed section 132, and an adjustment section 133 connected between the first fixed section 131 and the second fixed section 132.
  • One end of the first fixing section 131 is connected to the first support plate 110 and the other end is provided with a first opening 131a facing the adjustment section 133.
  • One end of the second fixing section 132 is connected to the second support plate 120 and the other end is provided with In the second opening 132a of the adjusting section 133, one end of the adjusting section 133 is movably inserted into the first opening 131a, and the other end of the adjusting section 133 is movably inserted into the second opening 132a.
  • the first fixed section 131 and At least one of the second fixing sections 132 is provided with a long hole extending along the transverse direction B
  • the adjustment section 133 is provided with a positioning hole that is adapted to the long hole of the fixing section
  • the adjustment section 133 and at least one fixing section pass through The long hole and the positioning bolt 134 of the positioning hole are positioned.
  • the first fixing section 131 is provided with a first elongated hole 131b extending along the transverse direction B
  • the second fixing section 132 is provided with a second elongated hole 132b extending along the transverse direction B.
  • the adjusting section 133 is provided with a first positioning hole 133a and a second positioning hole (not shown in the figure).
  • the first positioning hole 133a is used in conjunction with the first elongated hole 131b
  • the second positioning hole is matched with the second elongated hole 132b. use.
  • Increasing the length of the adjusting section 133 extending into the first opening 131a or the second opening 132a can shorten the distance between the first supporting plate 110 and the second supporting plate 120; conversely, reducing the adjusting section 133 extending into the first opening
  • the length of 131a or the second opening 132a can increase the distance between the first support plate 110 and the second support plate 120.
  • the long holes for adjusting positioning may be provided on the fixed section or on the adjusting section 133.
  • the first opening 131a and the second opening 132a may not be used, and the fixed section and the adjustment section 133 may be directly connected through a long hole or other ways of adjusting the relative position, such as multiple positioning holes.
  • each of the first support plate 110 and the second support plate 120 is divided into at least two sections in its length direction, and one end of each section is provided with a recess 112 and the other end A convex portion 113 adapted to the concave portion 112 is provided, and two adjacent sections in the length direction of the first supporting plate 110 or the second supporting plate 120 are connected to each other by the concave section 112 of one section and the convex section 113 of the other section.
  • the device can be used to process various types of heat exchangers.
  • the connecting member 200 includes an elastic member, two adjacent support members 100 are connected by the elastic member, and the distance between the adjacent two support members 100 changes along the longitudinal direction A.
  • the heat exchanger can be changed during the bending process.
  • the elastic member can be an elastic belt.
  • two adjacent support members 100 are connected by an elastic member, so that the distance between two adjacent support members 100 can be adjusted, that is, a plurality of support members 100 can move relative to each other while having certain constraints. , The multiple supports 100 cannot move freely without restriction.
  • the connecting member 200 includes a first connecting rod 210 and a second connecting rod 220, the first connecting rod 210 and the second connecting rod 220 extending parallel to each other along the longitudinal direction A And spaced apart along the transverse direction B, the first connecting rod 210 and the second connecting rod 220 respectively pass through the connecting plates 130 of the plurality of supporting members 100, and any one of the first connecting rod 210 and the second connecting rod 220 is provided on each Two sides of each connecting plate 130 are used for positioning the elastic sleeve 230 of the connecting plate 130.
  • first connecting rod 210 and the second connecting rod 220 are used to constrain the support member 100 so that the plurality of support members 100 cannot move freely and unrestrictedly, while the elastic sleeve 230 makes the two adjacent support members 100
  • the spacing between the two supports can be adjusted, that is, the plurality of support members 100 can move relative to each other, while having certain constraints. In this way, when bending, the support 100 can move or deflect to a certain extent to cope with the deformation of the heat exchange tube section 632. It has a certain flexibility and restrains the support, which is convenient for the positioning of the support. The bending does not cause resistance to the circumferential deformation and movement of the flat tube, and does not affect the overall size of the heat exchanger.
  • the number of supports 100 on the first connecting rod 210 and the second connecting rod 220 can be adjusted to meet the requirements of bending different heat exchange tube lengths.
  • the connecting member 200 includes a first connecting rod 210 and a second connecting rod 220.
  • the first connecting rod 210 and the second connecting rod 220 extend parallel to each other in the longitudinal direction A and are spaced apart in the transverse direction B.
  • One end of the connecting rod 210 is connected to the connecting plate 130 of the support 100, the other end of the first connecting rod 210 is connected to the connecting plate 130 of another support 100 adjacent in the longitudinal direction A, and one end of the second connecting rod 220 It is connected to the connecting plate 130 of the support 100, and the other end of the second connecting rod 220 is connected to the connecting plate 130 of another support 100 adjacent in the longitudinal direction A.
  • the first connecting rod 210 and the second connecting rod 220 are used to constrain the supporting member 100 so that the plurality of supporting members 100 cannot move freely without restriction.
  • the device of the embodiment of the present application may further include: a positioning component 410 and a bending guide 420.
  • the positioning component 410 is used for positioning the heat exchanger before bending, and fixing the heat exchanger under bending.
  • the bending guide 420 is used to guide the heat exchange tube section 632 to bend around the target direction and shape
  • the bending guide 420 may include a cylinder, and the bending guide 420 may be placed on at least two rows of heat exchange tube sections 632 The inner side of the row of heat exchange tube sections 632 located at the innermost side of the bend.
  • the apparatus for bending a heat exchanger has multiple supporting rollers 300 and connecting members 200.
  • a plurality of support rollers 300 are arranged at intervals along the longitudinal direction A, and each support roller 300 has a first support surface 111 and a second support surface 121 spaced apart along the transverse direction B and used to abut the heat exchanger.
  • the first support surface 111 and The distance between the second supporting surfaces 121 does not change during the bending process of the heat exchanger, and among any two supporting rollers 300, the distance between the first supporting surface 111 and the second supporting surface 121 of any one supporting roller 300
  • the distance and the distance between the first supporting surface 111 and the second supporting surface 121 of the other supporting roller 300 are equal to each other; the connecting member 200 connects the plurality of supporting rollers 300 along the longitudinal direction A.
  • the support roller 300 has a certain structural rigidity, and the support roller 300 does not deform during the bending process of the heat exchanger.
  • the longitudinal direction A is the length direction of the heat exchange tube 630
  • the transverse direction B is the distribution direction of the two rows of heat exchange tube sections 632 of each heat exchange tube 630.
  • the apparatus for bending a heat exchanger of the present application is supported by a plurality of supporting rollers 300 between two rows of heat exchange tube sections 632, and the first supporting surface 111 and the second supporting surface 121 of each supporting roller 300 are The distance between the two rows of heat exchange tube sections 632 is equal, so that a fixed support is formed between the two rows of heat exchange tube sections 632 to ensure that the distance between the two rows of heat exchange tube sections 632 meets the design requirements and does not change significantly during the bending process.
  • the device of the embodiment of the present application can also be used to align the collecting pipes after bending, that is, the heat exchange tube sections 632 with the same length after multiple rows of heat exchange tubes are bent.
  • the device of the embodiment of the present application can be used for a heat exchanger with double-row heat exchange tube sections 632; as shown in Figure 20, the device of the embodiment of the present application can be used for a heat exchanger with more than two rows.
  • the heat exchanger of the heat exchange pipe section 632 can be used for a heat exchanger with more than two rows.
  • the device for bending the heat exchanger of the present application can provide a fixed support for the two rows of heat exchange tube sections 632, ensure the overall size of the heat exchanger after bending, and help improve the efficiency and quality of the bending process.
  • the distance between two adjacent support rollers 300 is variable along the longitudinal direction A during the bending process of the heat exchanger. In this way, during bending, the support roller 300 can move or deflect to a certain extent to cope with the deformation of the heat exchange tube section 632 during the bending process, and does not cause resistance to the circumferential deformation and movement of the flat tube during bending, and does not affect The overall size of the heat exchanger.
  • the support roller 300 is a hollow cylinder, and each of the first support surface 111 and the second support surface 121 is formed by a part of the outer peripheral wall surface of the support roller 300.
  • the peripheral wall of the hollow cylinder is circular, which can ensure that during the bending process, the first supporting surface 111 and the second supporting surface 121 can always achieve effective support at least in part of the area.
  • the pressure of 632 is small.
  • the connecting member 200 is a rectangular connecting frame 240, and the connecting member 200 includes two longitudinal rods 241 parallel to each other and two transverse rods 242 parallel to each other.
  • the two longitudinal rods 241 extend along the longitudinal direction A, and the two transverse rods 242 extend along the supporting roller.
  • a cross bar 242 of each rectangular connecting frame 240 penetrates one of the two adjacent support rollers 300 along the axis of the support roller 300, and the other cross bar 242 runs along the axis of the support roller 300.
  • the other support roller 300 is penetrated to each other.
  • the two longitudinal rods 241 are used to constrain the support roller 300 so that the multiple support rollers 300 cannot move freely and unrestricted.
  • the diameter of the cross rod 242 passing through the hollow cylinder is smaller than the inner diameter of the hollow cylinder.
  • the cross rod 242 can be in the hollow circle.
  • the movement in the cylinder allows the distance between two adjacent support rollers 300 to be adjusted, that is, the plurality of support rollers 300 can move relative to each other while having certain constraints. In this way, during bending, the support roller 300 can move or deflect to a certain extent to cope with the deformation of the heat exchange tube section 632 during the bending process, and does not cause resistance to the circumferential deformation and movement of the flat tube during bending, and does not affect The overall size of the heat exchanger.
  • the connecting parts can be designed as an assemblable structure according to the requirements of the application, in order to facilitate the combination of different numbers of support rollers 300 according to different heat exchange tube sizes.
  • the support roller 300 has an axial hole 301 extending along the axial direction of the support roller 300, and a first plane 302 and a second plane 303 spaced apart along the longitudinal direction A.
  • the supporting surface 111 is connected between the first plane 302 and the second plane 303 and is formed as an arc-shaped surface protruding away from the second supporting surface 121 along the transverse direction B.
  • the second supporting surface 121 is connected to the first plane 302 and the second plane 303 is formed as an arc-shaped surface protruding away from the first supporting surface 111 in the transverse direction B.
  • the connecting member 200 is a rectangular connecting frame 240, and the connecting member 200 includes two longitudinal rods 241 parallel to each other and two transverse rods 242 parallel to each other.
  • the two longitudinal rods 241 extend along the longitudinal direction A, and the two transverse rods 242 extend along the supporting roller.
  • a cross bar 242 of each rectangular connecting frame 240 penetrates one of the two adjacent support rollers 300 along the axis of the support roller 300, and the other cross bar 242 runs along the axis of the support roller 300. Through the other support roller 300.
  • the two longitudinal rods 241 are used to constrain the support roller 300 so that the multiple support rollers 300 cannot move freely and unrestricted.
  • the diameter of the cross rod 242 passing through the axial hole 301 is smaller than the longitudinal A length of the axial hole 301, and the cross rod 242 It can move in the axial hole 301, so that the distance between two adjacent support rollers 300 can be adjusted, that is, a plurality of support rollers 300 can move relative to each other with certain constraints.
  • the support roller 300 can move or deflect to a certain extent, and further limit the displacement to deal with the deformation of the heat exchange tube section 632 during the bending process, and does not deform the flat tube in the circumferential direction during bending. And the movement causes resistance and does not affect the overall size of the heat exchanger.
  • the support roller 300 may also have other shapes.
  • the support roller 300 is a solid cylinder
  • the solid cylinder has an axial hole 301 extending along the axial direction of the support roller 300
  • the connecting member 200 is a rectangular connecting frame 240
  • the connecting members 200 include each other Two parallel longitudinal rods 241 and two parallel transverse rods 242.
  • the two longitudinal rods 241 extend along the longitudinal direction A
  • the two transverse rods 242 extend along the axial direction of the support roller 300.
  • Each rectangular connecting frame 240 has one transverse rod.
  • the rod 242 penetrates one support roller 300 of the two adjacent support rollers 300 along the axial direction of the support roller 300 and the other cross rod 242 penetrates the other support roller 300 along the axial direction of the support roller 300.
  • the support roller 300 is a hollow cylinder, and spokes extending in the radial direction are arranged in the hollow cylinder, a plurality of spokes are arranged crosswise, and the connecting member 200 is slidingly connected to one of the spokes.
  • the device of the embodiment of the present application may further include: a positioning component 410 and a bending guide 420, the positioning component 410 is used to position the heat exchanger before bending, the bending guide 420
  • the bending guide 420 may include a cylinder, and the bending guide 420 may be placed on the innermost one of the at least two rows of heat exchange tube sections 632. Exhaust the inside of the heat exchange pipe section 632.
  • the shape of the support roller 300 or the support 100 may be an I-shape, or a cylindrical shape, or a double-fan shape, or a round drum shape.
  • the application also discloses a bending method of the heat exchanger.
  • the bending method of this application includes:
  • the device of any of the above embodiments is placed between at least two rows of substantially parallel heat exchange tube sections 632; the first support surface 111 and the second support surface 121 respectively abut the heat exchange tube section 632 and/or the fins; the support member
  • the horizontal direction B of 100 is substantially parallel to the width direction of the heat exchange tube section 632
  • the longitudinal direction A of the support 100 is substantially parallel to the length direction of the heat exchange tube section 632; around the axis parallel to the first header 610 and the second header 620
  • At least two rows of heat exchange tube sections 632 are bent in the same direction.
  • a plurality of support members 100 or support rollers 300 are provided to support between two rows of heat exchange tube sections 632, and the distance between the first support surface 111 and the second support surface 121 of each support member 100 is equal, so that the two rows are exchanged
  • a fixed support is formed between the heat pipe sections 632 to ensure that the distance between the two rows of heat exchange pipe sections 632 meets the design requirements and does not change significantly during the bending process.
  • the bending method of the heat exchanger of the present application can form a heat exchanger parallel to each other between the heat exchange tube sections 632, ensuring the overall size of the heat exchanger after bending, and the efficiency and quality of the bending process are high.
  • the distance between two adjacent supports 100 or support rollers 300 along the longitudinal direction A is variable during the bending process.
  • the support 100 or the support roller 300 can move or deflect to a certain extent to cope with the non-uniform deformation of the heat exchange tube section 632, and does not cause resistance to the circumferential deformation and movement of the flat tube during bending. Affect the overall size of the heat exchanger.
  • multiple devices for bending the heat exchanger can be placed along the length of the header.
  • the bending method of the heat exchanger of the present application further includes: before bending at least two rows of heat exchange tube sections 632, positioning the heat exchanger The bending guide 420 is placed on the inner side of the innermost row of heat exchange tube sections 632 in the at least two rows of heat exchange tube sections 632.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

一种用于换热器折弯的装置和换热器的折弯方法，所述用于换热器折弯的装置包括：多个支撑件（100）和连接部件（200），多个支撑件（100）沿纵向间隔设置，每个所述支撑件（100）包括第一支撑板（110）、第二支撑板（120）和连接板（130），所述第一支撑板（110）和所述第二支撑板（120）沿横向间隔开，所述第一支撑板（110）具有第一支撑面（111），所述第二支撑板（120）具有第二支撑面（121），所述第一支撑面（111）与所述第二支撑面（121）之间的距离在折弯换热器的过程中不变，且任意两个支撑件（100）中，任意一个支撑件（100）的第一支撑面（111）与第二支撑面（121）之间的距离和另一支撑件（100）的第一支撑面（111）与第二支撑面（121）之间的距离彼此相等；所述连接部件（200）沿纵向连接多个所述支撑件（100）。该装置可以为多排换热管段（632）提供固定支撑，保证换热器折弯后的整体尺寸，有助于提高折弯加工的效率和质量。

Description

用于换热器折弯的装置和换热器的折弯方法
相关申请的交叉引用
本申请要求申请号为201910470365.3、申请日为2019年5月31日的中国专利申请的优先权和权益，上述中国专利申请的全部内容在此通过引用并入本申请。
技术领域
本申请属于换热设备技术领域，具体而言，涉及一种用于换热器折弯的装置和换热器的折弯方法。
背景技术
换热器广泛应用于热泵、空调器等换热系统中。为了增加换热面积，换热器通常会采用双排或更多排串联的形式并折弯。相关技术中，在折弯换热管时，靠近曲率圆心的内排换热管段与远离曲率圆心的外排换热管段之间的折弯半径不同，因此相对于平板状态，不同排的换热管段在折弯过程中会发生相对运动，使得相邻的两个换热管段的不同区域的间距难以保持一致，影响整个换热器成型后的造型和换热效果，存在改进空间。
发明内容
本申请的实施例提出一种用于换热器折弯的装置，所述装置包括：多个支撑件，多个所述支撑件沿纵向间隔设置，每个所述支撑件包括第一支撑板、第二支撑板和连接在所述第一支撑板和所述第二支撑板之间的连接板，所述第一支撑板和所述第二支撑板沿横向间隔开，所述第一支撑板具有在所述横向上背离所述第二支撑板且用于与换热器抵接的第一支撑面，所述第二支撑板具有在所述横向上背离所述第一支撑板且用于与换热器抵接的第二支撑面，所述第一支撑面与所述第二支撑面之间的距离在折弯换热器的过程中不变，且任意两个支撑件中，任意一个支撑件的第一支撑面与第二支撑面之间的距离和另一支撑件的第一支撑面与第二支撑面之间的距离彼此相等；连接部件，所述连接部件沿纵向连接多个所述支撑件。
本申请的用于换热器折弯的装置，可以为多排换热管段在折弯过程中提供多排管段之间的固定支撑，保证换热器折弯后的整体尺寸，有助于提高折弯加工的效率和质量。
在一些实施例中，所述第一支撑面和所述第二支撑面为弧形，且同一个所述支撑件的第一支撑面和第二支撑面朝背离彼此的方向凸出。
在一些实施例中，同一个所述支撑件的第一支撑板和第二支撑板之间的间距可调。
在一些实施例中，所述连接板包括第一固定段、第二固定段和连接在所述第一固定段与所述第二固定段之间的调节段，所述第一固定段的一端与所述第一支撑板相连且另一端设有朝向所述调节段的第一开口，所述第二固定段的一端与所述第二支撑板相连且另一端设有朝向所述调节段的第二开口，所述调节段的一端可移动地插接于所述第一开口中，所述调节段的另一端可移动地插接于所述第二开口中，所述第一固定段和所述第二固定段中的至少一个固定段设有沿横向延伸的长条孔，所述调节段设有与所述长条孔适配的定位孔，所述调节段和所述至少一个固定段通过贯穿所述长条孔和所述定位孔的定位栓定位。
在一些实施例中，所述第一支撑板和所述第二支撑板中的每一个在其长度方向上分为至少两段，每一段的一端设有凹部且另一端设有与所述凹部适配的凸部，在所述第一支撑板或者所述第二支撑板长度方向上相邻两段通过其中一段的所述凹部与另一段的凸部相互配合而彼此连接。
在一些实施例中，所述连接部件包括弹性件，相邻两个所述支撑件通过所述弹性件相连，相邻两个所述支撑件之间的距离沿所述纵向在换热器折弯过程中可变。
在一些实施例中，所述弹性件为弹性皮带。
在一些实施例中，所述连接部件包括第一连接杆和第二连接杆，所述第一连接杆和所述第二连接杆彼此平行地沿所述纵向延伸且沿横向间隔开，所述第一连接杆和所述第二连接杆分别穿过多个所述支撑件的连接板，所述第一连接杆和所述第二连接杆中任一个上设有位于每个连接板的两侧用于定位所述连接板的弹性套。
在一些实施例中，所述连接部件包括第一连接杆和第二连接杆，所述第一连接杆和所述第二连接杆彼此平行地沿所述纵向延伸且沿横向间隔开，所述第一连接杆的一端与所述支撑件的连接板相连，所述第一连接杆的另一端与在纵向方向上相邻的另一个所述支撑件的连接板相连，所述第二连接杆的一端与所述支撑件的连接板相连，所述第二连接杆的另一端与在纵向方向上相邻的另一个所述支撑件的连接板相连。
本申请的实施例还公开了一种用于换热器折弯的装置，所述装置包括：多个支撑辊，多个所述支撑辊沿纵向间隔设置，每个所述支撑辊具有沿横向间隔开且用于与换热器抵接的第一支撑面和第二支撑面，所述第一支撑面与所述第二支撑面之间的距离在折弯换热器的过程中不变，且任意两个支撑辊中，任意一个支撑辊的第一支撑面与第二支撑面 之间的距离和另一支撑辊的第一支撑面与第二支撑面之间的距离彼此相等；连接部件，所述连接部件沿纵向连接多个所述支撑辊。
在一些实施例中，所述支撑辊为空心圆筒，所述第一支撑面和所述第二支撑面中的每一个由所述支撑辊的外周壁面的一部分形成。
在一些实施例中，所述支撑辊具有沿该支撑辊的轴向延伸的轴向孔以及沿所述纵向间隔开的第一平面和第二平面，所述第一支撑面连接在所述第一平面和所述第二平面之间且形成为沿所述横向远离所述第二支撑面凸出的弧形面，所述第二支撑面连接在所述第一平面和所述第二平面之间且形成为沿所述横向远离所述第一支撑面凸出的弧形面。
在一些实施例中，所述连接部件为矩形连接框且包括彼此平行的两个纵杆和彼此平行的两个横杆，两个所述纵杆沿所述纵向延伸，两个所述横杆沿所述支撑辊的轴向延伸，每个矩形连接框的一个横杆沿所述支撑辊的轴向贯穿相邻两个支撑辊中的一个支撑辊且另一个横杆沿所述支撑辊的轴向贯穿另一个支撑辊。
在一些实施例中，相邻两个所述支撑辊之间的距离沿所述纵向在换热器折弯过程中可变。
本申请还公开了一种换热器的折弯方法，所述换热器包括第一集流管、第二集流管和多个换热管，所述第一集流管和所述第二集流管平行且相邻设置，所述换热管为扁管，所述换热管的第一端与所述第一集流管相连且所述换热管的第二端与所述第二集流管相连以连通所述第一集流管和第二集流管，多个所述换热管沿所述第一集流管或所述第二集流管的长度方向分布，所述换热管在所述第一集流管或所述第二集流管长度方向上相互平行设置，相邻所述扁管之间设置有翅片，所述换热管包括折弯段以及在换热管宽度方向上大体平行的至少两排换热管段，所述折弯方法包括：在大体平行的至少两排换热管段之间放置如上述任一项所述的用于换热器折弯的装置；所述第一支撑面和第二支撑面分别与所述换热管段和/或翅片抵接；所述支撑件横向方向与所述换热管段宽度方向大体平行，所述支撑件纵向方向与所述换热管段长度方向大体平行；绕平行于所述第一集流管和所述第二集流管的轴向的方向同时折弯所述至少两排换热管段。
在一些实施例中，相邻两个所述支撑件或支撑辊之间的距离沿所述纵向在折弯过程中可变。
在一些实施例中，所述的方法，还包括：在折弯所述至少两排换热管段前，定位所述换热器；在所述至少两排换热管段中位于折弯最内侧的一排换热管段的内侧放置折弯导引件。
在一些实施例中，沿集流管长度方向上放置多个所述用于换热器折弯的装置。
所述换热器的折弯方法与上述的装置相对于现有技术所具有的优势相同，在此不再赘述。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是本申请第一种实施例的装置的结构示意图；
图2是本申请第一种实施例的装置的在端面示意图；
图3是本申请第二种实施例的装置的结构示意图；
图4是图3中D处的局部放大图；
图5是本申请第二种实施例的装置的在端面示意图；
图6是本申请第三种实施例的装置的结构示意图；
图7是图6中E处的局部放大图；
图8是本申请第一种或第二种或第三种实施例的装置在折弯初始阶段的示意图；
图9是本申请第一种或第二种或第三种实施例的装置在折弯完成阶段的示意图；
图10是本申请第一种或第二种或第三种实施例的装置在折弯初始阶段的示意图；
图11是本申请第一种或第二种或第三种实施例的装置在折弯完成阶段的示意图；
图12是本申请第一种或第二种或第三种实施例的装置在使用过程中的局部示意图；
图13是本申请第四种实施例的装置的结构示意图；
图14是本申请第五种实施例的装置的结构示意图；
图15是本申请第六种实施例的装置的结构示意图；
图16是本申请第七种实施例的装置的结构示意图；
图17是本申请第八种实施例的装置的结构示意图；
图18是本申请第四种或第五种或第六种实施例的装置在折弯完成阶段的示意图；
图19是本申请第四种或第五种或第六种实施例的装置在折弯初始阶段的示意图；
图20是本申请第四种或第五种或第六种实施例的装置在折弯完成阶段的示意图。
附图标记：
支撑件100，第一支撑板110，第一支撑面111，凹部112，凸部113，第二支撑板 120，第二支撑面121，连接板130，第一固定段131，第一开口131a，第一长条孔131b，第二固定段132，第二开口132a，第二长条孔132b，调节段133，第一定位孔133a，定位栓134，
连接部件200，第一连接杆210，第二连接杆220，弹性套230，矩形连接框240，纵杆241，横杆242，
支撑辊300，轴向孔301，第一平面302，第二平面303，
定位部件410，折弯导引件420，
第一集流管610，第二集流管620，换热管630，折弯段631，换热管段632，
纵向A，横向B。
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，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
如图8-图12和图14-图20所示，换热器包括：第一集流管610、第二集流管620和多个换热管630。
第一集流管610的轴向与第二集流管620的轴向平行，第一集流管610和第二集流管620可以相互平行间隔开设置，第一集流管610可以作为入口集流管，第二集流管620可以作为出口集流管，或者第一集流管610可以作为出口集流管，第二集流管620可以作为入口集流管。
多个换热管630可以沿第一集流管610的轴向和第二集流管620的长度方向间隔开布置，多个换热管630在第一集流管610或第二集流管620长度方向上相互平行设置，每个换热管630的第一端与第一集流管610相连，且每个换热管630的第二端与第二集流管620相连以连通第一集流管610和第二集流管620，这样换热介质可以在第一集流管610——换热管630——第二集流管620或者第二集流管620——换热管630——第一集流管610之间流通。第一集流管610可以设有第一接口，第二集流管620可以设有第二接口，第一接口和第二接口用于与外部的管路相连，以将换热器连接于整个空调系统或者其他换热系统中。
换热管630为扁管，相邻扁管之间设置有翅片，换热管630包括折弯段631以及在换热管630宽度方向上大体平行的至少两排换热管段632，折弯段631由换热管630绕平行于第一集流管610的长度方向折弯形成，且第一换热管段632与第二换热管段632 平行。
下面参考图1-图12描述根据本申请实施例的用于换热器折弯的装置。
如图1-图12所示，根据本申请一个实施例的用于换热器折弯的装置多个支撑件100和连接部件200。
多个支撑件100沿纵向A间隔设置，每个支撑件100包括第一支撑板110、第二支撑板120和连接在第一支撑板110和第二支撑板120之间的连接板130，第一支撑板110和第二支撑板120沿横向B间隔开，第一支撑板110具有在横向B上背离第二支撑板120且用于与换热器抵接的第一支撑面111，第二支撑板120具有在横向B上背离第一支撑板110且用于与换热器抵接的第二支撑面121，第一支撑面111与第二支撑面121之间的距离在折弯换热器的过程中不变，且任意两个支撑件100中，任意一个支撑件100的第一支撑面111与第二支撑面121之间的距离和另一支撑件100的第一支撑面111与第二支撑面121之间的距离彼此相等，连接部件200沿纵向A连接多个支撑件100。
在装置的实际使用过程，纵向A为换热管630的长度方向，横向B为每个换热管630的至少两排换热管段632的分布方向。
需要说明的是，在折弯过程中，外层换热管段632与内层换热管段632之间的折弯半径不同，因此相对于平板状态，换热管段632在折弯过程中会发生相对运动。本申请的用于换热器折弯的装置，通过设置多个支撑件100支撑在两排换热管段632之间，且每个支撑件100的第一支撑面111与第二支撑面121之间的间距相等，这样两排换热管段632之间形成固定支撑，保证两排换热管段632之间的距离符合设计要求，不在折弯的过程中发生较大的变化。
如图8-图11所示，对于多排不对齐的换热管段632，采用本申请用于换热器折弯的装置，可以精确保证两排换热管段632的长度差，确保加工出的产品符合设计要求。
当然，本申请实施例的装置也可以用于对齐的换热管段632。
如图8和图9所示，本申请实施例的装置可以用于具有双排换热管段632的换热器；如图10和图11所示，本申请实施例的装置可以用于具有多于两排换热管段632的换热器。
本申请的用于换热器折弯的装置，可以为多排换热管段632在折弯过程中提供固定支撑，保证换热器折弯后的整体尺寸，有助于提高折弯加工的效率和质量。
在一些实施例中，如图2、图4、图5和图12所示，第一支撑面111和第二支撑面121为弧形，且同一个支撑件100的第一支撑面111和第二支撑面121朝背离彼此的方 向凸出。外凸型的第一支撑面111和第二支撑面121，可以确保在弯折过程中，第一支撑面111和第二支撑面121始终能至少有部分区域实现有效支撑，即始终保持接触与换热管段632始终保持接触。
在图1-图2所示的实施例中，同一个支撑件100的第一支撑板110和第二支撑板120之间的间距固定，该装置可以用于加工固定尺寸的换热器，且该装置的结构简单，成本低。
在图3-图5所示的实施例中，同一个支撑件100的第一支撑板110和第二支撑板120之间的间距可调，该装置可以用于加工多种型号的换热器，在实际的使用中，可以根据两排换热管段632之间距离的设计需求调节第一支撑面111和第二支撑面121的距离，这样同一个装置可以在多个型号的换热器的生产过程中使用。
在实际的执行中，如图4和图5所示，连接板130包括第一固定段131、第二固定段132和连接在第一固定段131与第二固定段132之间的调节段133，第一固定段131的一端与第一支撑板110相连且另一端设有朝向调节段133的第一开口131a，第二固定段132的一端与第二支撑板120相连且另一端设有朝向调节段133的第二开口132a，调节段133的一端可移动地插接于第一开口131a中，调节段133的另一端可移动地插接于第二开口132a中，第一固定段131和第二固定段132中的至少一个固定段设有沿横向B延伸的长条孔，调节段133设有与固定段的长条孔适配的定位孔，调节段133和至少一个固定段通过贯穿长条孔和定位孔的定位栓134定位。在实际的执行中，如图4所示，第一固定段131设有沿横向B延伸的第一长条孔131b，第二固定段132设有沿横向B延伸的第二长条孔132b，调节段133设有第一定位孔133a和第二定位孔(图中未示出)，第一定位孔133a与第一长条孔131b配合使用，第二定位孔与第二长条孔132b配合使用。
增大调节段133伸入第一开口131a或第二开口132a的长度，即可缩短第一支撑板110和第二支撑板120之间的间距；反之，减小调节段133伸入第一开口131a或第二开口132a的长度，即可增大第一支撑板110和第二支撑板120之间的间距。
可以理解的，调节定位的长条孔可以设在固定段上，也可以设在调节段133上。在某些实施例中，可以不使用第一开口131a和第二开口132a，直接对固定段和调节段133通过长条孔或其他可调节相对位置的方式，例如采用多个定位孔进行连接。
在图6-图7所示的实施例中，第一支撑板110和第二支撑板120中的每一个在其长度方向上分为至少两段，每一段的一端设有凹部112且另一端设有与凹部112适配的凸部113，在第一支撑板110或者第二支撑板120长度方向上相邻两段通过其中一段的凹 部112与另一段的凸部113相互配合而彼此连接。
该装置可以用于加工多种型号的换热器，在实际的使用中，可以根据换热器沿换热管630的排布方向的长度设计需求，选择拼接几段第一支撑板110和第二支撑板120，这样同一个装置可以在多个型号的换热器的生产过程中使用，便于生产制造。
在一些实施例中，如图1-图6所示，连接部件200包括弹性件，相邻两个支撑件100通过弹性件相连，相邻两个支撑件100之间的距离沿纵向A在换热器折弯过程中可变，在实际的执行中，弹性件可以为弹性皮带。
可以理解的是，通过弹性件连接相邻两个支撑件100，使得相邻两个支撑件100之间的间距能够调整，即多个支撑件100之间可以相对运动，同时又有一定的约束，多个支撑件100不能随意的无限制的运动。如图12所示，特别是对于与弯折区域对应支撑件100，通过弹性件连接相邻两个支撑件100，这样在折弯时，支撑件100可以发生一定的移动或偏转，以应对换热管段632的在折弯过程发生的变形，例如在纵向A上，多排换热管段会发生相对的位移，支撑件100具有一定的位移变化，可以适应于换热管段的位移，利于支撑面与换热管段之间的接触，提供支撑，同时也是对换热管段具有一定的保护作用，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。
在另一些实施例中，如图1和图2所示，连接部件200包括第一连接杆210和第二连接杆220，第一连接杆210和第二连接杆220彼此平行地沿纵向A延伸且沿横向B间隔开，第一连接杆210和第二连接杆220分别穿过多个支撑件100的连接板130，第一连接杆210和第二连接杆220中任一个上设有位于每个连接板130的两侧用于定位连接板130的弹性套230。
可以理解的是，第一连接杆210和第二连接杆220用于约束支撑件100，使多个支撑件100不能随意的无限制的运动，弹性套230则使得相邻两个支撑件100之间的间距能够调整，即多个支撑件100之间可以相对运动，同时又有一定的约束。这样在折弯时，支撑件100可以发生一定的移动或偏转，以应对换热管段632的变形，具有一定灵活性的同时又对支撑件具有一定的约束作用，便于支撑件的定位，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。可以调整第一连接杆210和第二连接杆220上的支撑件100的数量以满足折弯不同的换热管段长度的要求。
在又一些实施例中，连接部件200包括第一连接杆210和第二连接杆220，第一连接杆210和第二连接杆220彼此平行地沿纵向A延伸且沿横向B间隔开，第一连接杆210的一端与支撑件100的连接板130相连，第一连接杆210的另一端与在纵向A方向 上相邻的另一个支撑件100的连接板130相连，第二连接杆220的一端与支撑件100的连接板130相连，第二连接杆220的另一端与在纵向A方向上相邻的另一个支撑件100的连接板130相连。可以理解的是，第一连接杆210和第二连接杆220用于约束支撑件100，使多个支撑件100不能随意的无限制的运动。
如图8-图11所示，本申请实施例的装置还可以包括：定位部件410和折弯导引件420，定位部件410用于在折弯前定位换热器，固定换热器折弯位置，折弯导引件420用于引导换热管段632绕目标方向和形状折弯，折弯导引件420可以包括圆筒，折弯导引件420可以放置在至少两排换热管段632中位于折弯最内侧的一排换热管段632的内侧。
下面参考图13-图20描述根据本申请实施例的用于换热器折弯的装置。
如图13-图20所示，根据本申请一个实施例的用于换热器折弯的装置多个支撑辊300和连接部件200。
多个支撑辊300沿纵向A间隔设置，每个支撑辊300具有沿横向B间隔开且用于与换热器抵接的第一支撑面111和第二支撑面121，第一支撑面111与第二支撑面121之间的距离在折弯换热器的过程中不变，且任意两个支撑辊300中，任意一个支撑辊300的第一支撑面111与第二支撑面121之间的距离和另一支撑辊300的第一支撑面111与第二支撑面121之间的距离彼此相等；连接部件200沿纵向A连接多个支撑辊300。支撑辊300具有一定的结构刚性，在换热器折弯过程中支撑辊300不发生变形。
在装置的实际使用过程，纵向A为换热管630的长度方向，横向B为每个换热管630的两排换热管段632的分布方向。
需要说明的是，在折弯过程中，外层换热管段632与内层换热管段632之间的折弯半径不同，因此相对于平板状态，换热管段632在折弯过程中会发生相对运动。本申请的用于换热器折弯的装置，通过设置多个支撑辊300支撑在两排换热管段632之间，且每个支撑辊300的第一支撑面111与第二支撑面121之间的间距相等，这样两排换热管段632之间形成固定支撑，保证两排换热管段632之间的距离符合设计要求，不在折弯的过程中发生较大的变化。
如图18-图20所示，对于多排不对齐的换热管段632，采用本申请用于换热器折弯的装置，可以精确保证两排换热管段632的长度差，确保加工出的产品符合设计要求。同时支撑辊的设计可以更灵活地适应于折弯过程中不同换热管段之间的位移变化，以满足不同长度换热管段的折弯要求。
当然，本申请实施例的装置也可以用于折弯后集流管对齐，即多排换热管排折弯后长度一致的换热管段632。
如图18和图19所示，本申请实施例的装置可以用于具有双排换热管段632的换热器；如图20所示，本申请实施例的装置可以用于具有多于两排换热管段632的换热器。
本申请的用于换热器折弯的装置，可以为两排换热管段632提供固定支撑，保证换热器折弯后的整体尺寸，有助于提高折弯加工的效率和质量。
在一些实施例中，相邻两个支撑辊300之间的距离沿纵向A在换热器折弯过程中可变。这样在折弯时，支撑辊300可以发生一定的移动或偏转，以应对换热管段632在折弯过程中的变形，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。
在一些实施例中，如图13所示，支撑辊300为空心圆筒，第一支撑面111和第二支撑面121中的每一个由支撑辊300的外周壁面的一部分形成。空心圆筒的周壁为圆形，可以确保在弯折过程中，第一支撑面111和第二支撑面121始终能至少有部分区域实现有效支撑，且空心圆筒的质量轻，对换热管段632的压力小。
连接部件200为矩形连接框240，且连接部件200包括彼此平行的两个纵杆241和彼此平行的两个横杆242，两个纵杆241沿纵向A延伸，两个横杆242沿支撑辊300的轴向延伸，每个矩形连接框240的一个横杆242沿支撑辊300的轴向贯穿相邻两个支撑辊300中的一个支撑辊300且另一个横杆242沿支撑辊300的轴向贯穿另一个支撑辊300。
两个纵杆241用于约束支撑辊300，使多个支撑辊300不能随意的无限制的运动，贯穿空心圆筒的横杆242的直径小于空心圆筒的内径，横杆242可以在空心圆筒内移动，使得相邻两个支撑辊300之间的间距能够调整，即多个支撑辊300之间可以相对运动，同时又有一定的约束。这样在折弯时，支撑辊300可以发生一定的移动或偏转，以应对换热管段632在折弯过程中的变形，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。且连接部件可以根据应用的要求设计为可组装的结构，以利于根据不同的换热管段尺寸组合不同数量的支撑辊300.
在另一些实施例中，如图16所示，支撑辊300具有沿该支撑辊300的轴向延伸的轴向孔301以及沿纵向A间隔开的第一平面302和第二平面303，第一支撑面111连接在第一平面302和第二平面303之间且形成为沿横向B远离第二支撑面121凸出的弧形面，第二支撑面121连接在第一平面302和第二平面303之间且形成为沿横向B远离第一支撑面111凸出的弧形面。
连接部件200为矩形连接框240，且连接部件200包括彼此平行的两个纵杆241和彼此平行的两个横杆242，两个纵杆241沿纵向A延伸，两个横杆242沿支撑辊300的轴向延伸，每个矩形连接框240的一个横杆242沿支撑辊300的轴向贯穿相邻两个支撑辊300中的一个支撑辊300且另一个横杆242沿支撑辊300的轴向贯穿另一个支撑辊300。
两个纵杆241用于约束支撑辊300，使多个支撑辊300不能随意的无限制的运动，贯穿轴向孔301的横杆242的直径小于轴向孔301的纵向A长度，横杆242可以在轴向孔301内移动，使得相邻两个支撑辊300之间的间距能够调整，即多个支撑辊300之间可以相对运动，同时又有一定的约束。这样在折弯时，支撑辊300可以发生一定的移动或偏转，并进一步限定位移量，以应对换热管段632的在折弯过程中的变形，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。
当然，支撑辊300还可以为其他形状。
比如图14所示的实施例中，支撑辊300为实心圆柱，实心圆柱具有沿该支撑辊300的轴向延伸的轴向孔301，连接部件200为矩形连接框240，且连接部件200包括彼此平行的两个纵杆241和彼此平行的两个横杆242，两个纵杆241沿纵向A延伸，两个横杆242沿支撑辊300的轴向延伸，每个矩形连接框240的一个横杆242沿支撑辊300的轴向贯穿相邻两个支撑辊300中的一个支撑辊300且另一个横杆242沿支撑辊300的轴向贯穿另一个支撑辊300。
比如图15所示的实施例中，支撑辊300为空心圆筒，空心圆筒内设有沿径向延伸的轮辐，多个轮辐交叉设置，连接部件200与其中一个轮辐滑动连接。
如图18-图20所示，本申请实施例的装置还可以包括：定位部件410和折弯导引件420，定位部件410用于在折弯前定位换热器，折弯导引件420用于引导换热管段632绕目标方向和形状折弯，折弯导引件420可以包括圆筒，折弯导引件420可以放置在至少两排换热管段632中位于折弯最内侧的一排换热管段632的内侧。
本申请的装置中，支撑辊300或支撑件100的形状可以为I型，或者圆柱形，或者双扇型，或者圆鼓型。
本申请还公开了一种换热器的折弯方法。
本申请的折弯方法包括：
在大体平行的至少两排换热管段632之间放置上述任一种实施例的装置；第一支撑面111和第二支撑面121分别与换热管段632和/或翅片抵接；支撑件100横向B方向 与换热管段632宽度方向大体平行，支撑件100纵向A方向与换热管段632长度方向大体平行；绕平行于第一集流管610和第二集流管620的轴向的方向同时折弯至少两排换热管段632。
通过设置多个支撑件100或支撑辊300支撑在两排换热管段632之间，且每个支撑件100的第一支撑面111与第二支撑面121之间的间距相等，这样两排换热管段632之间形成固定支撑，保证两排换热管段632之间的距离符合设计要求，不在折弯的过程中发生较大的变化。
本申请的换热器的折弯方法，可以成型出换热管段632之间相互平行的换热器，保证换热器折弯后的整体尺寸，折弯加工的效率和质量高。
在一些实施例中，相邻两个支撑件100或支撑辊300之间的距离沿纵向A在折弯过程中可变。这样在折弯时，支撑件100或支撑辊300可以发生一定的移动或偏转，以应对换热管段632的非均匀变形，且在折弯时不对扁管的周向变形和运动造成阻力，不影响换热器的整体尺寸。
对于沿集流管长度方向长度较长的换热器，可以沿集流管长度方向上放置多个用于换热器折弯的装置。
在一些实施例中，如图8-图11和图18-图20所示，本申请的换热器的折弯方法还包括：在折弯至少两排换热管段632前，定位换热器；在至少两排换热管段632中位于折弯最内侧的一排换热管段632的内侧放置折弯导引件420。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；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。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“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一定指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何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (18)

  1. 一种用于换热器折弯的装置，其特征在于，所述装置包括：
    多个支撑件，多个所述支撑件沿纵向间隔设置，每个所述支撑件包括第一支撑板、第二支撑板和连接在所述第一支撑板和所述第二支撑板之间的连接板，所述第一支撑板和所述第二支撑板沿横向间隔开，所述第一支撑板具有在所述横向上背离所述第二支撑板且用于与换热器抵接的第一支撑面，所述第二支撑板具有在所述横向上背离所述第一支撑板且用于与换热器抵接的第二支撑面，所述第一支撑面与所述第二支撑面之间的距离在折弯换热器的过程中不变，且任意两个支撑件中，任意一个支撑件的第一支撑面与第二支撑面之间的距离和另一支撑件的第一支撑面与第二支撑面之间的距离彼此相等；
    连接部件，所述连接部件沿纵向连接多个所述支撑件。
  2. 根据权利要求1所述的装置，其特征在于，所述第一支撑面和所述第二支撑面为弧形，且同一个所述支撑件的第一支撑面和第二支撑面朝背离彼此的方向凸出。
  3. 根据权利要求1或2所述的装置，其特征在于，同一个所述支撑件的第一支撑板和第二支撑板之间的间距可调。
  4. 根据权利要求1-3中任一项所述的装置，其特征在于，所述连接板包括第一固定段、第二固定段和连接在所述第一固定段与所述第二固定段之间的调节段，所述第一固定段的一端与所述第一支撑板相连且另一端设有朝向所述调节段的第一开口，所述第二固定段的一端与所述第二支撑板相连且另一端设有朝向所述调节段的第二开口，所述调节段的一端可移动地插接于所述第一开口中，所述调节段的另一端可移动地插接于所述第二开口中，所述第一固定段和所述第二固定段中的至少一个固定段设有沿横向延伸的长条孔，所述调节段设有与所述长条孔适配的定位孔，所述调节段和所述至少一个固定段通过贯穿所述长条孔和所述定位孔的定位栓定位。
  5. 根据权利要求1-4所述的装置，其特征在于，所述第一支撑板和所述第二支撑板中的每一个在其长度方向上分为至少两段，每一段的一端设有凹部且另一端设有与所述凹部适配的凸部，在所述第一支撑板或者所述第二支撑板长度方向上相邻两段通过其中一段的所述凹部与另一段的凸部相互配合而彼此连接。
  6. 根据权利要求1-4所述的装置，其特征在于，所述连接部件包括弹性件，相邻两个所述支撑件通过所述弹性件相连，相邻两个所述支撑件之间的距离沿所述纵向在换热器折弯过程中可变。
  7. 根据权利要求6所述的装置，其特征在于，所述弹性件为弹性皮带。
  8. 根据权利要求1-4所述的装置，其特征在于，所述连接部件包括第一连接杆和第二连接杆，所述第一连接杆和所述第二连接杆彼此平行地沿所述纵向延伸且沿横向间隔开，所述第一连接杆和所述第二连接杆分别穿过多个所述支撑件的连接板，所述第一连接杆和所述第二连接杆中任一个上设有位于每个连接板的两侧用于定位所述连接板的弹性套。
  9. 根据权利要求1-4所述的装置，其特征在于，所述连接部件包括第一连接杆和第二连接杆，所述第一连接杆和所述第二连接杆彼此平行地沿所述纵向延伸且沿横向间隔开，所述第一连接杆的一端与所述支撑件的连接板相连，所述第一连接杆的另一端与在纵向方向上相邻的另一个所述支撑件的连接板相连，所述第二连接杆的一端与所述支撑件的连接板相连，所述第二连接杆的另一端与在纵向方向上相邻的另一个所述支撑件的连接板相连。
  10. 一种用于换热器折弯的装置，其特征在于，所述装置包括：
    多个支撑辊，多个所述支撑辊沿纵向间隔设置，每个所述支撑辊具有沿横向间隔开且用于与换热器抵接的第一支撑面和第二支撑面，所述第一支撑面与所述第二支撑面之间的距离在折弯换热器的过程中不变，且任意两个支撑辊中，任意一个支撑辊的第一支撑面与第二支撑面之间的距离和另一支撑辊的第一支撑面与第二支撑面之间的距离彼此相等；
    连接部件，所述连接部件沿纵向连接多个所述支撑辊。
  11. 根据权利要求10所述的装置，其特征在于，所述支撑辊为空心圆筒，所述第一支撑面和所述第二支撑面中的每一个由所述支撑辊的外周壁面的一部分形成。
  12. 根据权利要求10所述的装置，其特征在于，所述支撑辊具有沿该支撑辊的轴向延伸的轴向孔以及沿所述纵向间隔开的第一平面和第二平面，所述第一支撑面连接在所述第一平面和所述第二平面之间且形成为沿所述横向远离所述第二支撑面凸出的弧形面，所述第二支撑面连接在所述第一平面和所述第二平面之间且形成为沿所述横向远离所述第一支撑面凸出的弧形面。
  13. 根据权利要求11或12所述的装置，其特征在于，所述连接部件为矩形连接框且包括彼此平行的两个纵杆和彼此平行的两个横杆，两个所述纵杆沿所述纵向延伸，两个所述横杆沿所述支撑辊的轴向延伸，每个矩形连接框的一个横杆沿所述支撑辊的轴向贯穿相邻两个支撑辊中的一个支撑辊且另一个横杆沿所述支撑辊的轴向贯穿另一个支撑辊。
  14. 根据权利要求10-13中任一项所述的装置，其特征在于，相邻两个所述支撑辊 之间的距离沿所述纵向在换热器折弯过程中可变。
  15. 一种换热器的折弯方法，其特征在于，所述换热器包括第一集流管、第二集流管和多个换热管，所述第一集流管和所述第二集流管平行且相邻设置，所述换热管为扁管，所述换热管的第一端与所述第一集流管相连且所述换热管的第二端与所述第二集流管相连以连通所述第一集流管和第二集流管，多个所述换热管沿所述第一集流管或所述第二集流管的长度方向分布，所述换热管在所述第一集流管或所述第二集流管长度方向上相互平行设置，相邻所述扁管之间设置有翅片，所述换热管包括折弯段以及在换热管宽度方向上大体平行的至少两排换热管段，所述折弯方法包括：
    在大体平行的至少两排换热管段之间放置如权利要求1-13所述的用于换热器折弯的装置；
    所述第一支撑面和第二支撑面分别与所述换热管段和/或翅片抵接；
    所述支撑件横向方向与所述换热管段宽度方向大体平行，所述支撑件纵向方向与所述换热管段长度方向大体平行；
    绕平行于所述第一集流管和所述第二集流管的轴向的方向同时折弯所述至少两排换热管段。
  16. 根据权利要求15所述的换热器的折弯方法，其特征在于，相邻两个所述支撑件或支撑辊之间的距离沿所述纵向在折弯过程中可变。
  17. 根据权利要求15或16所述的方法，其特征在于，还包括：
    在折弯所述至少两排换热管段前，定位所述换热器；
    在所述至少两排换热管段中位于折弯最内侧的一排换热管段的内侧放置折弯导引件。
  18. 根据权利要求15-17中任一项所述的换热器的折弯方法，其特征在于，沿集流管长度方向上放置多个所述用于换热器折弯的装置。
PCT/CN2020/093678 2019-05-31 2020-06-01 用于换热器折弯的装置和换热器的折弯方法 WO2020239121A1 (zh)

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