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rotary compressor

A technology for rotary compressors and compressor housings, applied to rotary piston machines, rotary piston pumps, rotary piston/swing piston pump components, etc., can solve problems such as piston wear and damage, and improve The effect of operational reliability

Active Publication Date: 2021-12-07
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the surface pressure of the front end of the blade in the axial direction of the rotating shaft increases locally, so that the blade, piston, etc. may be worn or damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Structure of a rotary compressor

[0024] figure 1 It is a vertical cross-sectional view showing the rotary compressor of the embodiment. figure 2 It is an exploded perspective view showing the compression part of the rotary compressor of the embodiment. image 3 It is a cross-sectional view showing the compression part of the rotary compressor of the embodiment seen from above.

[0025] Such as figure 1 As shown, the rotary compressor 1 has: a compression part 12, which is arranged in the lower part of the airtight vertical cylindrical compressor casing 10; a motor 11, which is arranged in the upper part of the compressor casing 10, The compression part 12 is driven by the rotating shaft 15 ; and the accumulator 25 is in the shape of a vertical cylinder and is fixed on the outer peripheral surface of the compressor casing 10 .

[0026] The compressor casing 10 has an upper suction pipe 105 and a lower suction pipe 104 through which refrigerant is sucked in. The up...

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PUM

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Abstract

A rotary compressor is provided with a concave portion (141-1) at the sliding position of the upper blade and the lower blade on the outer peripheral portion of the intermediate partition plate (140-1). The upper eccentric portion and the lower eccentric portion of the rotating shaft are twice the amount of eccentricity equal to or greater than 30% of the total length in the sliding direction of the upper blade and the lower blade. The width W of the concave portion (141-1) in the circumferential direction of the middle partition plate (140-1) is larger than the thickness T of the upper blade and the lower blade, and the depth of the concave portion (141-1) is set as D, and the upper blade and the lower blade When L is the total length of the blade, D≥0.1×L (Formula 1).

Description

technical field [0001] The invention relates to rotary compressors Background technique [0002] In a rotary compressor, an annular piston that is provided eccentrically with respect to a rotating shaft rotates in a cylinder, and the tip of a plate-shaped vane that reciprocates in the cylinder with the rotation of the piston is pressed against the outer peripheral surface of the piston, thereby , The cylinder is divided into a compression chamber and a suction chamber. In a two-cylinder type rotary compressor, vanes slide in a vane groove of a cylinder sandwiched between end plates and intermediate partitions while being biased by springs. [0003] In such a rotary compressor, when gaseous refrigerant is compressed by the piston in the cylinder, the rotary shaft is deflected by a small amount relative to the axial direction. As the rotation shaft deflects, the piston inclines in the direction perpendicular to the rotation shaft, and the amount of clearance between the vane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C23/00F04C29/00
CPCF04C18/3564F04C23/001F04C23/008F04C2240/10F04C2240/80F04C18/356F04C23/02
Inventor 井上阳田中顺也
Owner FUJITSU GENERAL LTD