Patent ID: 8800310
Filing Date: 2014-08-12
Classification: F04D,F25B

Abstract:
1. A turbo compressor to suction and compress gas comprising: a housing including a flow passageway through which gas flows, the gas liquefying when a certain ambient temperature is reached; an impeller disposed inside the flow passageway of the housing, the impeller being configured to provide suction of the gas by being rotationally driven; a liquid discharge port provided in the flow passageway on the upstream side of the impeller, the liquid discharge port being configured to discharge, from the flow passageway, any liquid produced as the gas liquefies when the turbo compressor is stopped; a liquid discharge pipe connected to the liquid discharge port of the flow passageway, the liquid discharge pipe being configured to allow the liquid to be discharged therethrough, an electromagnetic valve connected to the liquid discharge pipe, and a controller configured to open and close the electromagnetic valve, wherein the controller is configured to open the electromagnetic valve before the impeller is rotationally driven.