| 摘要 |
PURPOSE:To make it possible to stably ensure the amount of feed oil even upon lowering of the oil level in a compressor casing, by opening, verticaly downward, the suction inlet of a suction port which leads oil from the casing to a pump chamber, to an oil feed passage formed in the lower end of a side plate. CONSTITUTION:When the volume of a pump chamber 12 increases in association with reciprocating motion of a vane 10, oil 13 in a casing 1 is led through an oil passage 51 formed in the lower end of a side plate 5, and sucked into a space 50 and the pump chamber 12 through a downward directed suction port 52. When the volume of the pump chamber 12 decreases, oil is discharged into an oil feed passage 15 from a discharge port 16. In this case, since the resistance of backflow is high in the downward directed suction port 52, the backflow toward the casing 1 is less. Thereby, in an oil supply device in a horizontal type compressor which carries out the pumping action of oil supply, oil 13 in the casing 1 is sucked into an oil feed passage 51 formed in the lower end of the side plate 5 through the suction port 12 which is vertically downward opened, thereby a sufficient amount of feed-oil may be obtained even upon lowering of the oil level in the casing 1.
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