Title:
【発明の名称】冷媒用熱交換装置
Document Type and Number:
Japanese Patent JP3374501
Kind Code:
B2
Abstract:
PURPOSE:To prevent the rapid increase of the temperature of a refrigerant and a refrigerant heater without lowering heat-exchange efficiency. CONSTITUTION:A heat-exchanging device for a refrigerant is provided at an outer periphery with a copper piping 11 through which a refrigerant is circulated, and at an inner periphery with a refrigerant heater 13 having a plurality of fins 12 and a combustion gas resistance body 15 located in a combustion gas passage 14 formed in a refrigerant heater 13 and set such a manner that a passage area for combustion gas is gradually decreased toward a downstream place. This constitution causes combustion gas to make more effective contact with the wall surface of the refrigerant heater 13 toward a downstream place where the temperature of combustion gas is lowered, prevents the rapid increase of the temperature of a refrigerant and the refrigerant heater 13 without lowering the heat-exchange efficiency of combustion gas, and reliably ensures durability of a compressor and the refrigerant heater 13.
Inventors:
Tetsuo Imai
Junichi Jakudo
Junichi Jakudo
Application Number:
JP1423694A
Publication Date:
February 04, 2003
Filing Date:
February 08, 1994
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F25B41/00; (IPC1-7): F25B41/00
Domestic Patent References:
| JP289968A | ||||
| JP1142371A | ||||
| JP4273908A | ||||
| JP415426A | ||||
| JP61295418A | ||||
| JP5439754U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)