Heat pump and method for controlling operation thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 10, 2002
Grant Date -
Oct 18, 2001
app pub date -
Jan 25, 2001
filing date -
Apr 18, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Heat pump and a method for controlling a cooling/heating capability thereof, in which a capacity varying device is improved for adjusting a cooling/heating capability, the heat pump including a compressor having an inlet for drawing, and compressing low temperature and low pressure refrigerant, and an outlet for discharging the compressed refrigerant, a four way valve for connecting the outlet and the inlet to an indoor heat exchanger and an outdoor heat exchanger selectively depending on cooling/heating, the indoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with room air in cooling/heating respectively, the outdoor heat exchanger for evaporating/condensing the refrigerant by heat exchange with external air, a capillary tube having a reduced diameter for expansion of the refrigerant, a change over valve having a plunger movable by a pressure difference provided therein, and a connection tube connected the indoor heat exchanger and a four way valve, and a bypass tube connected between the connection tube and the change over valve.
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