Title:
熱交換器及びこれを備えた空気調和機
Document Type and Number:
Japanese Patent JP5881435
Kind Code:
B2
Abstract:
It is an objective to achieve suppressing progress of electrolytic corrosion (galvanic corrosion) by aluminum or an aluminum alloy caused by diffusion of copper ions to a connection pipe formed of aluminum or an aluminum alloy. The copper ions are diffused through water having condensed and staying in a small gap between the thermally insulating material and the connection pipe. In a gas pipe 30 and a liquid pipe 40 of a connection pipe unit 20, connection portions 37 and 47, in which aluminum pipes 31 and 41 (first refrigerant pipes: refrigerant pipes formed of aluminum or an aluminum alloy) and copper pipes 32 and 42 (second refrigerant pipes: refrigerant pipes formed of copper or a copper alloy) are respectively connected to each other, are disposed in fall portions of the aluminum pipes 31 and 41. The connection pipe unit 20 is covered with a thermally insulating material 60. An anti-corrosion treatment is applied to the aluminum pipes 31 and 41 covered with the thermally insulating material 60.
Inventors:
Mitsuhiro Ishikawa
Hayakawa Mitsusada
Hayakawa Mitsusada
Application Number:
JP2012014875A
Publication Date:
March 09, 2016
Filing Date:
January 27, 2012
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F28F19/00; F24F1/0071
Domestic Patent References:
| JP63194177A | ||||
| JP4359797A | ||||
| JP2009092274A | ||||
| JP2005055081A | ||||
| JP2002276970A | ||||
| JP2005090761A |
Foreign References:
| EP2439478A2 |
Attorney, Agent or Firm:
Hisao Kobayashi
Kiyoshi Yasushima
Takanashi Norio
Motoki Shandong
Taku Ogawa
Murata Kensei
Moto Otani
Kiyoshi Yasushima
Takanashi Norio
Motoki Shandong
Taku Ogawa
Murata Kensei
Moto Otani