Compressor for compressing gases
AssigneesHitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
InventorsHisanobu Kanamaru, Kenichi Gunji
Life of this patent
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Abstract
A compressor comprises a plurality of pistons each received in one of through holes formed in a cylinder block fixedly mounted on a rotational shaft which is journaled by a stationary part, and a wobble plate arranged in such a manner as to oppose and be inclined with respect to an end surface of the cylinder block. The wobble plate is supported on the rotational shaft for wobbling movement and rotatably holds one ends of the pistons. There are provided a pair of driving pins having one end portions secured to the cylinder block and extending in parallel with the rotational shaft, and the other ends slidably engaging the wobble plate through spherical bearings. The wobble plate, the driving pins and the spherical bearings constitute in cooperation a piston driving mechanism portion.
Claims10
In a gas compressor comprising a rotational shaft journaled by a stationary part, a cylinder block arranged in a fixed relationship with said rotational shaft for rotation with the shaft and formed with a plurality of through holes defining therein working fluid chambers, and piston driving means including a wobble plate arranged in an inclined manner to oppose one end surface of said cylinder block and rotatably holding one ends of said pistons, the compressor being constructed such that, when said cylinder block is rotated together with said rotational shaft, a fluid is sucked from a low pressure passage into said working fluid chambers and is discharged therefrom into a high pressure passage, the improvement wherein:
- said wobble plate is supported on said rotational shaft for rotation with said shaft and for wobbling movement, and said piston driving means further includes only two driving pins having one end portions secured to said cylinder block for fixedly holding the pins so they extend parallel with said rotational shaft, said driving pins having the other end portions slidably engaging said wobble plate through spherical bearings.
In a compressor gas comprising a rotational shaft journaled by a stationary part, a cylinder block arranged in a fixed relationship with said rotational shaft for rotation with the shaft and formed with a plurality of through holes, pistons respectively received in said through holes and defining therein working fluid chambers, and piston driving means including a wobble plate arranged to oppose said cylinder block and rotatably holding one ends of said pistons, the compressor being constructed such that, when said cylinder block is rotated together with said rotational shaft, a fluid is sucked from a low pressure passage into said working fluid chambers and is discharged therefrom into a high pressure passage, the improvement wherein:
- said wobble plate is supported on said rotational shaft for rotation with said shaft and for wobbling movement through a center ball;
- and said piston driving means further includes only two driving pins having one end portions embedded into said cylinder block through one end surface of the latter and secured thereto by the pressure of partial plastical deformation of the material of said cylinder block toward peripheries of said driving pins, said driving pins extending in parallel with said rotational shaft, and spherical bearings slidably fitted on the other end portions of said driving pins and held in said wobble plate near the periphery of the latter in a manner to permit relative movement in a radial direction between said spherical bearings and said wobble plate.
Dependencies are inferred from the claim text.