Title:
HEAT EXCHANGER AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3930408
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a safety measure; to realize high performance in a small type; and to provide an economical manufacturing method in a heat exchanger used for a refrigerating system using an inflammable refrigerant.
SOLUTION: This heat exchanger is composed of a group of plate fins 1 mutually arranged at an interval, refrigerant tube 2-inserting elongate holes 3 arranged in a plurality on a plate surface of the plate fins 1 and a refrigerant tube 2 formed by bending in a meandering shape of continuing a straight pipe part 2a and a bent pipe part 2b. An interval holding fin collar 4 of the plate fins 1 is arranged in a peripheral edge part of the elongate holes 3. Since a tool for holding an interval of a large number of plate fins 1 can be obviated, the heat exchanger having a high degree of freedom of piping can be provided by an inexpensive method.
Inventors:
Masaki Sunada
Application Number:
JP2002278760A
Publication Date:
June 13, 2007
Filing Date:
September 25, 2002
Export Citation:
Assignee:
Matsushita Cold Machinery Co., Ltd.
International Classes:
F28F1/32; B21D53/08; F25B1/00; F28F3/04; (IPC1-7): F28F1/32; B21D53/08; F25B1/00; F28F3/04
Domestic Patent References:
| JP4158191A | ||||
| JP9303986A | ||||
| JP7071890A | ||||
| JP1281398A | ||||
| JP11333539A | ||||
| JP2002079335A | ||||
| JP2002243382A | ||||
| JP52023093B1 | ||||
| JP56099290U | ||||
| JP48062646U | ||||
| JP10078295A | ||||
| JP2002130918A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano