Air-conditioning apparatus and railway vehicle air-conditioning apparatus
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Feb 2, 2012
filing date -
Feb 2, 2012
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Abstract
An air-conditioning apparatus includes a compressor, a four-way valve, expansion means, and an indoor heat exchanger, and further includes a check valve disposed between a discharge side of the compressor and the four-way valve, a first solenoid valve disposed between the expansion means and the indoor heat exchanger, and a controller. Opening and closing of the first solenoid valve are controllable. The controller switches the four-way valve and switches the first solenoid valve between open and closed states. When a heating operation is stopped, the controller switches the four-way valve from connection for the heating operation to connection for a cooling operation, closes the first solenoid valve, and then stops the compressor.
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