| 摘要 |
In the present invention, a reciprocating motion capacity-type compression device utilizes the fluid resistance difference in a gap between a piston and a cylinder and has a magnetic rotating and reciprocating motion mechanism. In the reciprocating motion mechanism, a piston is configured such that a plurality of sets of two rows of protruded ridge-shaped sine-curve magnetic poles, each set consisting of a left and right protruded magnetic pole arranged in parallel with a groove therebetween, for causing the piston to reciprocate a certain number of times during one rotation of the piston, are provided at an outer circumferential surface part of the piston made of a magnetic body. In the mechanism, formed in the circumferential direction within the cylinder are a plurality of thrust magnetic bearings that are composed of magnetic body magnetic poles and permanent magnets positioned between the magnetic body magnetic poles, the magnetic body magnetic poles consisting of left and right protrusions which are disposed so as to face the left and right protruded magnetic poles and which match the number of reciprocations during one rotation of the piston. The thrust magnetic bearings, by making the piston rotate by a motor means, carry out reciprocation movement of the piston in a non-contact manner by magnetic force and support a load in the reciprocation direction of the piston. |
