| 摘要 |
PURPOSE:To reduce the load on a drive shaft when a compressor is to be started by furnishing a blade spring on one of a plurality of blades to be in slide contact with a plurality of rollers, and performing the compressing motion only with the cylinder provided with blade spring at the time of starting. CONSTITUTION:A drive shaft 2 has a plurality of eccentric parts 2a-2c fitted with respective cylinders 4a-4c, between which middle plates 51, 52 are interposed. A compressing element 3 is formed by forming these cylinders 4a-4c in a single piece construction wherein they are held pinched by a front head 31 and a rear head 32, and is accommodated in an enclosed casing 21. The cylinders 4a-4c accommodate rollers 33, with which a plurality of blades 6a-6c slidable in the radial direction are put in slide contact. In this compressor, a blade spring 7 is installed on only one of the blades 6a-6c, for example the one 6b, and at the time of starting, the compressing motion shall be performed only with its corresponding cylinder 4b.
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