| 摘要 |
An air conditioner, comprising a low cost differential pressure regulating device capable of holding a difference between the high and low pressures of a compressor during the cooling operation under a low atmospheric temperature at a specified value or higher, the low cost differential pressure regulating device further comprising a first stage differential pressure regulating device for regulating the difference between high and low pressures so as to prevent the difference from lowering by lowering the speed of an outdoor fan when the difference between high and low pressures of the compressor during the cooling operation under a specified atmospheric temperature or below lowers to a specified value and a second stage differential pressure regulating device for regulating the difference between high and low pressures so as to prevent the difference from lowering by increasing the operating frequency of the compressor when the difference between high and low pressures cannot be held at the specified value or higher by the control of the difference between high and low pressures by the first stage differential pressure regulating device.
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