| 摘要 |
PURPOSE:To extend a heating time by preventing frosting of an outdoor side heat exchanger when number of revolutions of a compressor of an air- conditioner is increased. CONSTITUTION:When number of revolutions of a compressor 4 of an outdoor unit 2 having an outdoor side heat exchanger 6, the compressor 4 and an AC blower 8 is increased, refrigerant discharged from the compressor 4 is not temporarily supplied to the exchanger 6 through an indoor side heat exchanger 9, the refrigerant in the exchanger 6 is sucked to the compressor 4, a refrigerant pressure in the exchanger 6 is temporarily lowered, and hence the exchanger 6 is easily frosted. Accordingly, number of revolutions of the blower 8 is temporarily increased to prevent a low pressure from dropping, thereby preventing frosting of the exchanger 6.
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