EP2394753A1 - Appareil et procédé de pliage d'un assemblage d'échange thermique - Google Patents

Appareil et procédé de pliage d'un assemblage d'échange thermique Download PDF

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Publication number
EP2394753A1
EP2394753A1 EP11167851A EP11167851A EP2394753A1 EP 2394753 A1 EP2394753 A1 EP 2394753A1 EP 11167851 A EP11167851 A EP 11167851A EP 11167851 A EP11167851 A EP 11167851A EP 2394753 A1 EP2394753 A1 EP 2394753A1
Authority
EP
European Patent Office
Prior art keywords
shaper
heat exchange
exchange battery
shaping
axis
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP11167851A
Other languages
German (de)
English (en)
Other versions
EP2394753B1 (fr
Inventor
Valerio Giordano Riello
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sierra SpA
Original Assignee
Sierra SpA
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Filing date
Publication date
Application filed by Sierra SpA filed Critical Sierra SpA
Publication of EP2394753A1 publication Critical patent/EP2394753A1/fr
Application granted granted Critical
Publication of EP2394753B1 publication Critical patent/EP2394753B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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
    • 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

Definitions

  • This invention concerns an apparatus and a method for bending a heat exchange battery.
  • a typical heat exchange battery comprises a plurality of parallel fluid tubes having heat exchange fins.
  • the fluid tubes are connected in pairs at one end and have apertures at the opposite end for receiving C-shaped connection elements, known in the art as bends.
  • bends are designed to connect separate pairs of tubes, to form a fluid circuit having an inlet, an outlet and a fluid path.
  • Heat exchange batteries are designed to be arranged in special housings, with a fan located therein. In order to obtain an appropriate configuration for this purpose, heat exchange batteries undergo bending processes.
  • the bends are successively formed by a complex mechanism that synchronizes the shaping roller, the bending plates and the support and conveyor element.
  • a different apparatus for bending a heat exchange battery comprises a shaping roller having a circular section, which is equipped with gripper means for gripping one end of the battery. As the roller rotates, the battery is bent around the roller to substantially conform to the profile of the roller. This arrangement only partially obviates the drawbacks as mentioned with reference to EP 927 865 . Indeed, the apparatus can only provide heat exchange batteries having a constant radius.
  • the object of the present invention is to provide an apparatus for bending a heat exchange battery that has such structural and functional features as to fulfill the above needs, while obviating the drawbacks of the prior art.
  • numeral 10 designates an apparatus of the present invention for bending a heat exchange battery, such as the heat exchange battery 1 as shown in Figure 7 .
  • the heat exchange battery 1 comprises a plurality of parallel fluid tubes 2 having heat exchange fins 3.
  • the fluid tubes 2 are connected in pairs at a first end 2a, corresponding to a first end 1a of the heat exchange battery 1, where they are connected by curved connecting portions 5, and have apertures 4 at the opposite end 2b, corresponding to a second end 1b of the heat exchange battery 1, for receiving C-shaped connector elements (not shown), known in the art as bends.
  • Such bends are designed to connect separate pairs of tubes, to form a fluid circuit having an inlet, an outlet and a fluid path.
  • the apparatus 10 comprises a load-bearing structure 11 with a shaper 20 associated therewith (see Figure 8 ) for rotating about an axis of rotation A-A and having a shaping surface 20a.
  • the shaping surface 20a has at least two curved shaping portions with different bend radiuses which are joined by a flat shaping portion 24.
  • the apparatus 10 can provide bent battery configurations with at least two bending points, while maintaining a simple and inexpensive construction.
  • the shaping surface 20a has a first curved shaping portion 21 with a first bend radius r1, second 22 and third 23 curved shaping portions with a second bend radius r2 and a first flat shaping portion 24 extending between the first 21 and second 22 curved shaping portions along a first length 11.
  • the second bend radius r2 is smaller than the first bend radius r1.
  • the shaping surface has a second shaping portion 25 extending between the second 22 and third 23 curved shaping portions along a second length 12 greater than the first length 11.
  • the shaping surface 20a has a concave-profile portion, whose concavity extends towards the interior of the shaper 20.
  • concave intends to designate a depression from the shaping surface 20a, wherein the depression extends towards the interior of the shaper 20.
  • the concave-profile portion is the second shaping portion 25.
  • the shaper 20 In order to cause the shaper 20 to rotate about the axis of rotation A-A, the shaper 20 has a hole 26 for receiving a drive shaft 12 extending along the axis of rotation A-A, which is adapted to be rotatably driven about such axis of rotation A-A, rotatably integral with the shaper 20.
  • First drive means 30 are connected to the drive shaft 12 for rotating the shaper 20 for winding the heat exchange battery 1 around the shaper 20.
  • the first drive means 30 include an electric motor having a drive shaft connected to the drive shaft 12 through drive-transfer means.
  • the apparatus 10 also comprises first gripper means 40 associated with the shaper 20 for gripping a first end 1a of the heat exchange battery 1.
  • the first gripper means 40 include a plurality of gripper members 41 which are adapted to engage the apertures 4 of the ends 1a of the heat exchange battery 1.
  • each gripper member 41 comprises a pin adapted to fit into a corresponding aperture 4 of the end 1a of the heat exchange battery 1.
  • the pins 41 are mounted to a movable support 42 which can be driven by drive means 15, e.g. pneumatic drive means.
  • Second gripper means 50 are provided for gripping the second end 1b of the heat exchange battery 1.
  • the gripper means 50 are movable from and to the shaper 20 in a sliding direction X-X perpendicular to the direction of the axis of rotation A-A.
  • Corresponding second drive means 60 are provided to move the second gripper means 50.
  • the apparatus 10 further comprises control means (not shown), which are connected to the drive means 30 and 6 for controlling and synchronizing actuation thereof
  • the second gripper means 50 include a carriage 51 that is mounted to move in the sliding direction X-X and has engagement members 52 for engaging the second end 1b of the heat exchange battery 1.
  • the engagement members 52 include a plurality of teeth which are designed to fit into the curved connecting portions 5 of the second end 1b of the heat exchange battery 1.
  • the carriage 51 comprises a slider 53 that is mounted to a guide element 54 to slide in the sliding direction X-X and a support plate 55 that is mounted to said slider 53 for swinging movement about an axis of oscillation parallel to the axis of rotation A-A of the shaper.
  • the support plate 55 is connected to drive means (not shown), which allow the support plate 55 to swing relative to the slider 53 to change the inclination thereof to a horizontal plane.
  • the support plate 55 defines a support surface 55a for a portion of the second end 1b of the heat exchange battery 1 and has the engagement members 52.
  • the engagement members 52 extend perpendicular to the plane defined by the support plate 55.
  • the second drive means 60 include a drive chain 61 connected to the slider 53 which passes through at least on pulley, in this example the pulley 62.
  • the second drive means 60 also include a pneumatic piston 63 which is connected to the pulley 62 to move the pulley 62 in the sliding direction X-X, thereby moving the slider 53 of the carriage 51 in the sliding direction X-X.
  • the guide element 54 is mounted to pivot about an axis of rotation parallel to the axis of rotation A-A of said shaper 20.
  • the guide element 54 has a first end 54a which is coupled to a pivot 56 integral with the load-bearing structure 11 and extends along the axis of rotation A-A and a second end 54b which is connected to third drive means 70 to move the guide element 54 and cause such guide element 54 to pivot about the axis of rotation A-A relative to the pivot 56.
  • the third drive means 70 include a pneumatic piston 71 which is connected to the second end 54b of the guide element 54 to cause said guide element 54 to pivot about the axis of rotation A-A relative to the pivot 56.
  • the apparatus 10 also comprises compensating means 80 for pressing a portion of the heat exchange battery 1 towards the concave-profile portion of the shaper 20.
  • this will allow the performance of bending processes that can provide bent heat exchange batteries having long straight sections between portions with small bend radiuses.
  • the compensating means 80 press a portion of the heat exchange battery 1 towards the second concave shaping portion 25 of the shaper 20 (see Figures 4 and 5 ).
  • the compensating means 80 include a member 81 movable from and to the shaper 20 and having an abutment element 82 for pressing the portion of the heat exchange battery towards the concave-profile portion of the shaper 20, in this example the second concave shaping portion 25 of the shaper 20.
  • Fourth drive means 90 are provided to move the movable member 81.
  • the fourth drive means 90 include a pneumatic piston.
  • the piston is represented by the movable member 81. Otherwise, the piston may be connected to the movable member 81.
  • a heat exchange battery 1 to be bent and a shaper 20 rotating about the axis of rotation A-A is provided.
  • the first end 1a of the heat exchange battery 1 is fixed to the shaper 20, and the second end 1b is fixed to the first gripper means 40.
  • the pins 41 are introduced into the apertures 4 of the end 1a of the heat exchange battery 1, whereas the curved connecting portions 5 are fitted on the teeth 52 of the carriage 51.
  • the shaper 20 is rotated about the axis of rotation A-A to wind the heat exchange battery 1 around the shaper 20 and the carriage 51 is driven to move in the sliding direction X-X.
  • Such movement pushes the pins 41 into the apertures 4 until the pins 41 engage by interference fit the tubes 2 of the exchanger to grip them.
  • the carriage 51 switches from a pushing element mode to a driven element mode, e.g. by changing the operating mode of the drive means 60.
  • the pins 41 are disengaged from the apertures 4 by pneumatic cylinder 15 which pushes the support 42 of the pins 41 away from the apertures 4 of the heat exchanger 1.
  • the shaping surface 20a has a first curved shaping portion 21 with a first bend radius r1, second 22 and third 23 curved shaping portions with a second bend radius r2 smaller than the first bend radius r1, a first flat shaping portion 24 extending between the first 21 and second 22 curved shaping portions along a first length 11 and a second concave shaping portion 25 extending between the second 22 and third 23 curved shaping portions along a second length 12 greater than the first length 11.
  • a bent heat exchange battery 100 (see Figure 9 ) that has a first curved portion 101 with a first bend radius R1, second 102 and third 103 curved portions with a second bend radius R2 smaller than the first bend radius R1, a first flat portion 104 extending between the first 101 and second 102 curved portions along a first length L1 and a second flat portion 105 extending between the second 102 and third 103 curved portions along a second length L2 greater than the first length L1.
  • the compensating means 80 press the portion 105 of the bent heat exchange battery 100 towards the second flat shaping portion 25 of the shaper 20 (see Figures 4 and 5 ) to compensate for the convexity created during bending and cause the latter to spring back to the flat position.
  • control means are connected with corresponding drive means for driving the support plate 55 and the guide element 54 as well as with the drive means for rotating the shaper 20 and moving the carriage 51.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Hybrid Cells (AREA)
EP20110167851 2010-06-09 2011-05-27 Appareil et procédé de pliage d'un assemblage d'échange thermique Active EP2394753B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI2010A001036A IT1400497B1 (it) 2010-06-09 2010-06-09 Apparato e metodo per la piegatura di una batteria di scambio termico.

Publications (2)

Publication Number Publication Date
EP2394753A1 true EP2394753A1 (fr) 2011-12-14
EP2394753B1 EP2394753B1 (fr) 2012-08-22

Family

ID=43530337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110167851 Active EP2394753B1 (fr) 2010-06-09 2011-05-27 Appareil et procédé de pliage d'un assemblage d'échange thermique

Country Status (2)

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EP (1) EP2394753B1 (fr)
IT (1) IT1400497B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105689474A (zh) * 2016-04-12 2016-06-22 湖州科达化工燃料有限公司 一种换热器用的弯管装置
CN105728519A (zh) * 2016-04-12 2016-07-06 湖州科达化工燃料有限公司 一种换热器用的管体弯管机构
EP2599565A4 (fr) * 2010-07-30 2017-06-07 Daikin Industries, Ltd. Procédé de pliage pour échangeur de chaleur et échangeur de chaleur
CN114713675A (zh) * 2022-04-13 2022-07-08 湖北蓝华铝业有限公司 铝合金型材加工用自动弯折系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102564A (fr) * 1974-01-17 1975-08-13
JPH02121720A (ja) * 1988-10-31 1990-05-09 Aisin Seiki Co Ltd ロータリ・ベンダー機
EP0927865A1 (fr) 1997-12-30 1999-07-07 Carrier Corporation Echangeur de chaleur multirangs
CN100376339C (zh) * 2005-05-26 2008-03-26 杰富意钢铁株式会社 管子弯曲加工装置和管子弯曲加工方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102564A (fr) * 1974-01-17 1975-08-13
JPH02121720A (ja) * 1988-10-31 1990-05-09 Aisin Seiki Co Ltd ロータリ・ベンダー機
EP0927865A1 (fr) 1997-12-30 1999-07-07 Carrier Corporation Echangeur de chaleur multirangs
CN100376339C (zh) * 2005-05-26 2008-03-26 杰富意钢铁株式会社 管子弯曲加工装置和管子弯曲加工方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2599565A4 (fr) * 2010-07-30 2017-06-07 Daikin Industries, Ltd. Procédé de pliage pour échangeur de chaleur et échangeur de chaleur
CN105689474A (zh) * 2016-04-12 2016-06-22 湖州科达化工燃料有限公司 一种换热器用的弯管装置
CN105728519A (zh) * 2016-04-12 2016-07-06 湖州科达化工燃料有限公司 一种换热器用的管体弯管机构
CN114713675A (zh) * 2022-04-13 2022-07-08 湖北蓝华铝业有限公司 铝合金型材加工用自动弯折系统
CN114713675B (zh) * 2022-04-13 2024-04-12 湖北蓝华铝业有限公司 铝合金型材加工用自动弯折系统

Also Published As

Publication number Publication date
IT1400497B1 (it) 2013-06-11
EP2394753B1 (fr) 2012-08-22
ITMI20101036A1 (it) 2011-12-10

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