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rotary compressor

A rotary compressor and compressor technology, applied in the direction of rotary piston machinery, rotary piston pump, rotary piston/swing piston pump components, etc., can solve the problem of hindering welding operations, the impact of liquid reservoirs, and welding tools Easy access to the liquid reservoir and other problems, to achieve the effect of improving compression efficiency and improving workability

Active Publication Date: 2020-09-29
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when welding the jet introduction pipe to the connection portion of the jet connection pipe, the welding tool is likely to come into contact with the reservoir, which may hinder the welding work.
In addition, the heat generated at the welding part of the welding tool may affect the reservoir

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] Composition of rotary compressors

[0027] figure 1 It is a longitudinal sectional view showing the rotary compressor of the first embodiment. figure 2 It is an exploded perspective view showing the compression part of the rotary compressor of the first embodiment. image 3 It is a cross-sectional view of the compression part of the rotary compressor of the first embodiment viewed from above.

[0028] Such as figure 1 As shown, the rotary compressor 1 includes: a compression unit 12 disposed at the lower portion of a closed vertical cylindrical compressor housing 10 ; an upper portion of the compressor housing 10 , and the compression unit is driven via a rotating shaft 15 . The electric motor 11 of 12, the vertical cylindrical accumulator 25 that is fixed on the outer peripheral surface of compressor housing 10 and is sealed.

[0029] The accumulator 25 is connected to the upper cylinder chamber 130T of the upper cylinder 121T (see figure 2 ) connection, and the...

no. 2 example

[0078] Structure of a rotary compressor

[0079] figure 1 It is a longitudinal sectional view showing the rotary compressor of the second embodiment. figure 2 It is an exploded perspective view showing the compression part of the rotary compressor of the second embodiment. Figure 6 It is a cross-sectional view of the compression part of the rotary compressor of the second embodiment seen from above. In addition, the same code|symbol is attached|subjected to the part which is substantially the same as 1st Example, and description is abbreviate|omitted.

[0080] Such as Figure 6 As shown, in the lower cylinder 121S, a lower cylinder inner wall 123S is formed along a circle concentric with the rotating shaft 15 of the electric motor 11 . A lower piston 125S having an outer diameter smaller than the inner diameter of the lower cylinder 121S is disposed inside the lower cylinder inner wall 123S, and a lower compression chamber 133S that sucks, compresses, and discharges refr...

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Abstract

The present invention provides a rotary compressor, the compression part has: an annular cylinder; an upper end plate, which closes the upper side of the cylinder; a lower end plate, which closes the lower side of the cylinder; Rotation; the piston, which fits in the eccentric part, revolves along the inner peripheral surface of the cylinder, forming a cylinder chamber in the cylinder; the vane, which protrudes from the vane groove provided in the cylinder to the cylinder chamber and contacts the piston, thereby The cylinder chamber is divided into a suction chamber and a compression chamber; an injection hole, which injects liquid refrigerant into the compression chamber; and a discharge hole, which discharges refrigerant compressed in the compression chamber from the compression chamber. The centers of the injection holes are arranged in the range of a sector with a central angle of 40° or less from the centerline of the vane groove toward the side opposite to the connection position of the compressor frame and the suction part in the circumferential direction of the rotating shaft.

Description

[0001] This application claims priority based on JP-2016-079693 and JP-2016-080228 filed on April 12, 2016 and April 13, 2016, and the entire content of the Japanese application is cited in this application. technical field [0002] This invention relates to rotary compressors. Background technique [0003] In order to improve the compression efficiency of the refrigerant, there is a rotary compressor provided with injection holes for injecting liquid refrigerant (injection liquid) into the compression chamber during compression of the refrigerant in the cylinder. As related art rotary compressors, there are known configurations in which injection holes are provided on an intermediate partition plate arranged between an upper cylinder and a lower cylinder, or configurations in which injection holes are provided in a cylinder. [0004] In addition, there is a rotary compressor including an accumulator for supplying refrigerant into a compressor housing. In such a rotary comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C29/04F04C23/02
CPCF04C18/3562F04C23/02F04C29/042F04C23/001F04C23/008F04C29/0007F04C18/3564F04C2240/804F04C2240/806F04C29/0085F04C29/12F04C2240/30F04C2240/60
Inventor 上田健史井上阳两角尚哉泉泰幸
Owner FUJITSU GENERAL LTD