Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus
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United States of America Patent
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Nov 3, 2015
Grant Date -
Jan 9, 2014
app pub date -
Jul 2, 2013
filing date -
Jul 9, 2012
priority date (Note) -
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Abstract
An outdoor unit for an air-conditioning apparatus includes: a compressor; an outdoor fan; a plurality of outdoor heat exchangers coupled to a plurality of indoor units; a switching member configured to switch functions of the outdoor heat exchangers to either condensers or evaporators by switching of coupling states between the compressor and the outdoor heat exchangers; and a control unit configured to calculate a low pressure saturation temperature during a cooling operation or a cooling-main operation, and configured to cause all of the plurality of outdoor heat exchangers to serve as condensers by controlling the switching member when a state in which an open-air temperature is lower than the low pressure saturation temperature continues for a predetermined time.
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