Second-refrigerant pump driving type air conditioner

Details Second-refrigerant pump driving type air conditioner Second-refrigerant pump driving type air conditioner

2006-02-21

2008-08-26

Jones, Melvin (Department: 3744)

Refrigeration

Intermediate fluid container transferring heat to heat...

Flow line connected transfer fluid supply and heat exchanger

C062S324100

Reexamination Certificate

active

07415838

ABSTRACT:
A second-refrigerant pump driving type air conditioner, including an indoor unit having an indoor heat exchanger that circulates a refrigerant containing no oil, a first circulator including a compressor that compresses and discharges a refrigerant containing oil, a first outdoor heat exchanger, a second outdoor heat exchanger, and an outdoor expander, and a second circulator including an intermediate heat exchanger connected to the indoor heat exchanger that circulates the refrigerant containing no oil and heat-exchanges the refrigerant of the first outdoor heat exchanger, a receiver, and a pump. A restriction of a length and a diameter of a connection pipe for connecting an outdoor unit and the indoor unit is decreased, and an oil shortage of the compressor is prevented.

REFERENCES:
patent: 2893218 (1959-07-01), Harnish
patent: 5607013 (1997-03-01), Inoue et al.
patent: 5784893 (1998-07-01), Furuhama et al.
patent: 6119478 (2000-09-01), Sada et al.
patent: 6851273 (2005-02-01), Jang et al.
patent: 2005/0081537 (2005-04-01), Hwang et al.
patent: 2004-177067 (2004-06-01), None
patent: 100360966 (1999-04-01), None
English language Abstract of the corresponding Japanese Laid-Open Patent Publication No. HEI 10-197171.
English language Abstract of JP 2004-177067.

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