Swash plate compressor

Abstract

A drive shaft has a first swash plate integrally and rotatably connected thereto. The first swash plate has a one-headed piston moored thereto through shoes. The rotation of the first swash plate accompanying the rotation of the drive shaft causes the piston to linearly reciprocate, whereby refrigerant gas is compressed. A second swash plate in the form of an annulus is relatively rotatably supported by the first swash plate through a ball bearing. The second swash plate is disposed between the first swash plate and the shoe at the compression load-receiving side, in such a manner that the plate is slidable with respect to the first swash plate and shoe. Therefore, smooth slide is ensured between the first and second swash plates.

Description

technical field [0001] The present invention relates to, for example, a swash plate compressor for compressing refrigerant gas constituting a refrigeration circuit. Background technique [0002] Conventionally, as a capacity-variable swash plate compressor used in a refrigeration circuit, there has been, for example, a configuration as shown in FIG. 11 . That is, a drive shaft 91 is rotatably supported on the casing 85 , and a rotor 87 is fixed to the drive shaft 91 so as to be integrally rotatable. A swash plate 92 is supported on the drive shaft 91 so as to be slidable in the direction of the axis L and tiltable. The hinge mechanism 88 is interposed between the rotor 87 and the swash plate 92 . On the outer peripheral portion of the swash plate 92, a single-end sliding shoe 93A is attached to the hemispherical first shoe 93A arranged on the side of the hinge mechanism 88 and a similar hemispherical second shoe 93B arranged on the opposite side of the hinge mechanism 88. ...

AI Technical Summary

Problems solved by technology

[0009] However, when the first swash plate 90 rotates, the second swash plate 95 is also aligned with the first swash plate 90 on the inner peripheral surface of the support hole 95a in addition to the outer peripheral portion between the first swash plate 90 and the shoe 93B. 1Frictional resistance is generated between the swash plate 90 (step portion 90a)

Therefore, it is difficult to slip between the first swash plate 90 and the second swash plate 95. To make the relative rotational speed of the second swash plate 95 and the shoe 93B much lower than that of the shoe 93A and the first swash plate 90, Relative rotational speed is difficult

As a result, there is also a problem that the effect of providing the second swash plate 95 (reduction of mechanical loss, etc.) cannot be fully exerted.

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