| 摘要 |
A spherical expansion compressor adapted to variable working conditions with a spherical inner chamber, comprises a rolling rotor compressor used as first-stage compression, compression working chambers, expansion working chambers, a gas tank and a pressure control circuit. The pressure control circuit is arranged between the gas tank and a pressure-controlled inlet valve of the rolling rotor compressor, and controls the inlet valve to open/close according to the pressure in the gas tank. When the pressure in the gas tank exceeds a set value, the pressure-controlled inlet valve is closed by the pressure control circuit. When the pressure in the gas tank returns to the set value, the pressure-controlled inlet valve is opened and the rolling rotor compressor works normally. Working medium after first-stage compression enters the gas tank, the pressure in the tank maintains constant through the regulation of the pressure control circuit. Working medium with constant pressure enters second-stage compression, and then expands in the expansion-stage, thereby forming the spherical expansion compressor adapted to variable working conditions. |
