| 摘要 |
PURPOSE:To reduce dynamic loss of a compressor by forcing the internal face of an oil pump to make close contact with the external face of a crankshaft at the lower end thereof and bending the entire upper edge part of the oil pump in the reversed-L form. CONSTITUTION:The internal face of an oil pump 7 is forced to make close contact with the external face of a crankshaft 6 at the lower end thereof and the entire upper edge part of the oil pump 7 is bent externally in the reversed-L form 7a. When the oil pump 7 is turned, oil stuck to the external wall 7c of the oil pump 7 is forced upward by the centrifugal force, however, the oil is scattered in the directions as shown by the arrows from the bent part 7a of the reversed-L form. Lubricating face is thereby cooled and friction loss be reduced. In addition, oil which is scattered from the part 7a of the reversed-L form will not be stuck to rotors 3a and 3b. A compressor can obtain advantages of a low dynamic loss and a long life.
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