Heat pump type refrigerant cycle system
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United States of America Patent
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-
May 29, 2001
Grant Date -
N/A
app pub date -
Sep 16, 1999
filing date -
Sep 24, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When a heating mode is set in a refrigerant cycle system, air is heated in a condenser by condensing high-pressure gas refrigerant, a part of high-pressure refrigerant from the condenser is decompressed in a pressure reducing unit to a middle pressure, and the other part of high-pressure refrigerant from the condenser is heat-exchanged with the middle-pressure refrigerant having passed through the pressure reducing unit in a refrigerant-refrigerant heat exchanger. Therefore, middle-pressure refrigerant having passed through the pressure reducing unit is evaporated in the refrigerant-refrigerant heat exchanger and the evaporated middle-pressure refrigerant is introduced into a gas injection port of a compressor. Thus, in the refrigerant cycle system, heating capacity can be improved due to the gas refrigerant injection into the compressor.
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