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Title:
METHOD FOR BENDING POLYHEDRON HEAT EXCHANGER AND BENDING APPARATUS
Document Type and Number:
Japanese Patent JP2005349426
Kind Code:
A
Abstract:

To provide a bending apparatus for a polyhedron heat exchanger in which the need for components for connecting a plurality of heat exchanging parts by performing brazing work in one process is eliminated and the cost can be reduced.

The bending apparatus comprises pressure dies 19 arranged below the heat exchanging parts 2 and 3 arranged in a horizontal state, two sets of segmental bending dies 20 to 23 arranged above the heat exchanging parts 2 and 3 in order to bend a connecting pipe 4 up to a prescribed angle, a hydraulic cylinder 18 for moving the segmental bending dies 20 to 23 toward the connecting pipe 4, and air chucks 24 and 25 for opening and closing the segmental bending dies 20 to 23. As a result, the outside width dimensions of the segmental bending dies 20 and 21 are made smaller than the spacing of the heat exchanging parts 2 and 3 when the segmental bending dies 20 and 21 are closed and other segmental bending dies 22 and 23 are similar, therefore the segmental bending dies 20 to 23 can be smoothly disconnected from the connecting pipe 4 without interference with the heat exchanging parts 2 and 3.


Inventors:
KAMIBAYASHI KAZUTAKA
Application Number:
JP2004171472A
Publication Date:
December 22, 2005
Filing Date:
June 09, 2004
Export Citation:
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Assignee:
CALSONIC KANSEI CORP
International Classes:
F28F9/26; B21D7/06; B21D53/08; (IPC1-7): B21D53/08; B21D7/06; F28F9/26
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu