| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To return lubrication oil to a coolant intake port side of a compressor 12a in an engine-driven type air conditioner. <P>SOLUTION: In the engine-driven type air conditioner, as a control device 50 opens a solenoid valve 29 during oil retrieving operation, liquid phase coolant in a receiver 15 flows into a liquid phase coolant tank 21 via a check valve 23 due to difference between pressure in the receiver 15 and pressure in an accumulator 19. Further, the liquid phase coolant flows from inside of the liquid phase coolant tank 21 into a container part 22b of a coolant heater 22. Accordingly, the lubrication oil staying in the coolant heater 22 is washed away into the accumulator 19 by the liquid phase coolant, which can return the lubrication oil staying in the coolant heater 22 to the coolant intake port side of the compressor 12a. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
