| 摘要 |
In a swash plate type variable capacity compressor that changes a stroke of a piston by controlling the pressure of a crank chamber 6, lubrication oil contained in refrigerant gas is maximally prevented from being circulated outside the compressor. Some of discharged refrigerant gas in a discharge chamber 22 flows into the crank chamber 6 through a communication passage 25 (25a and 25b) and a control valve 27, while some of the discharged refrigerant gas flows out to a suction chamber 21 from the crank chamber 6 through a second communication passage 26 and an orifice 28, and the pressure of the crank chamber 6 is controlled through a balance between an inflow amount and an outflow amount. Herein, an oil storage chamber 30 is provided, which extends at a downstream of the control valve 27 on the first communication passage 25 to separate oil and store the separated oil. Furthermore, an oil return passage 31 is provided, which is formed separately from the first communication passage 25b running from the oil storage chamber 30 to the crank chamber 6 to return the oil stored in the oil storage chamber to the crank chamber 6.
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