| 摘要 |
<p>A freezing cycle has a two-cylinder rotary compressor. One compression mechanism of the compressor has a switching mechanism for switching the pressure in the back face side of a blade to low or high, and when switched to low pressure, the one compression mechanism makes the pressure inside a cylinder chamber high. When a load is large, the back face side of a blade of one compression mechanism is switched to high pressure to perform normal operation, and when the load is small, the back face side of the blade of the one compression mechanism is switched to low pressure and the pressure inside a cylinder chamber is made to high, separating the blade from a roller to perform non-compression operation. The structure above produces no noise and causes no damage to the blade, and enables the freezing cycle device to continue non-compression operation.</p> |
