Refrigeration – Automatic control – Selective heating or cooling
Reexamination Certificate
2006-11-07
2006-11-07
Norman, Marc (Department: 3744)
Refrigeration
Automatic control
Selective heating or cooling
C062S200000, C062S223000, C062S224000
Reexamination Certificate
active
07131283
ABSTRACT:
Method for controlling a multi-type air conditioner having a plurality of indoor units each with an expansion valve, an indoor heat exchanger, and an indoor fan, some of which heat rooms, and rest of which are turned off, including the steps of (S11) defining a saturation temperature of refrigerant by using a heating cycle of the refrigerant, and Mollier chart, (S12) measuring a temperature of the refrigerant stagnant at the turned off indoor units, (S13) determining if a temperature difference of the refrigerant temperature and the saturation temperature is within a temperature range preset at a control part, (S14) opening the expansion valves of the turned off indoor units, if the temperature difference is within the temperature range preset at the control part, and (S15) closing the expansion valve of the turned off indoor units, if the temperature difference is not within the temperature range preset at the control part, whereby minimizing stagnation of refrigerant at turned off indoor units during some of the indoor units are in operation for heating rooms, and reduce noise occurred when the stagnant refrigerant is removed.
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English Language Abstract of JP 5-248722.
English Language Abstract of JP 2003-254588.
English Language Abstract of JP 11-325639.
English Language Abstract of JP 11-173628.
English Language Abstract of JP 9-236348.
English Language Abstract of JP 60-134227.
English Language Abstract of JP 62-288441.
English Language Abstract of JP 62-049146.
English language Abstract of JP 04-198672.
Chang Se Dong
Chang Seung Yong
Ha Do Yong
Oh Il Kwon
Park Bong Soo
Greenblum & Bernstein P.L.C.
LG Electronics Inc.
Norman Marc
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