Rotating fluid machine

A fluid machinery, rotary technology, used in rotary piston machinery, rotary piston engines, rotary piston pumps, etc., can solve the problems of reduced compression efficiency, refrigerant leakage, gas leakage, etc., to reduce the useless volume. Effect

Inactive Publication Date: 2007-04-11
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the structures shown in FIGS. 16 and 17, the vanes 123A, 123B are in line contact with the annular piston 122, and in the structure shown in FIG. 18, the vanes 123 are in line contact with the cylinders 124, 125, so when When the ring-shaped piston 122 performs eccentric rotation during operation, the contact portion receives a large load, and the contact portion may be worn or sintered.
[0013] In addition, since the components are in line contact with each other in this way, there is also a disadvantage that the sealing performance of the contact portion is poor.
Therefore, in the a

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0096] This embodiment relates to a rotary compressor. As shown in FIG. 1 , the compressor 1 is configured as a hermetically sealed type, and a compression mechanism (eccentrically rotating piston mechanism) 20 and a motor (drive mechanism) 30 are accommodated in a housing 10 of the compressor 1 . The above-mentioned compressor 1 is used, for example, to compress a refrigerant sucked in from an evaporator in a refrigerant circuit of an air-conditioning apparatus, and then discharge the refrigerant to a condenser.

[0097] The housing 10 is composed of a cylindrical body 11 , an upper end plate 12 fixed to the upper end of the body 11 , and a lower end plate 13 fixed to the lower end of the body 11 . The upper end plate 12 is provided with a suction pipe 14 penetrating the end plate 12 , and the trunk portion 11 is provided with a discharge pipe 15 penetrating the trunk portion 11 .

[0098] The compression mechanism 20 is configured between the upper casing 16 and the lower c...

Embodiment approach 2

[0150] The second embodiment of the present invention is an example in which the arrangement of the compression mechanism 20 and the electric motor 30 in the housing 10 is different from that of the first embodiment.

[0151] As shown in FIG. 8 , in the second embodiment, the compression mechanism 20 is arranged in the lower part of the housing 10 , and the motor 30 is arranged in the upper part. The compression mechanism 20 is formed between the upper casing 16 and the lower casing 17 fixed to the lower portion of the housing 10 , and the annular piston 22 is integrally formed with the upper casing 16 . Outer cylinder 24 , inner cylinder 25 , and end plate 26 are integrally formed. Inner cylinder 25 is slidably fitted on eccentric portion 33 a of drive shaft 33 to hold cylinder 21 between upper housing 16 and lower housing 17 . In addition, bearing portions 16 a and 17 a for supporting the drive shaft 33 are formed on the upper housing 16 and the lower housing 17 , respective...

Embodiment approach 3

[0161] The third embodiment of the present invention is an example in which the local structure of the compression mechanism 20 is different from that of the first embodiment.

[0162] In this third embodiment, as shown in FIG. 9 , the vertical relationship of the compression mechanism 20 itself is reversed from that of the first embodiment, and the suction structure is changed. Specifically, the cylinder 21 is integrally formed by connecting the upper ends of the outer cylinder 24 and the inner cylinder 25 with the end plate 26 . In addition, the annular piston 22 is integrally formed with the lower housing 17 . The seal ring 29 is filled in an annular groove 16 b formed in the upper housing 16 , and is crimped on the upper surface of the end plate 26 of the cylinder 21 .

[0163] The suction pipe 14 is provided laterally on the trunk portion 11 of the housing 10 , and a suction port 41 communicating with the suction pipe 14 is formed in the lower casing 17 . In addition, f...

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PUM

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Abstract

A rotating fluid machine is constructed such that an annular piston (22) is received inside annular cylinder chambers (C1, C2) of a cylinder (21) to form an outer cylinder chamber (C1) and an inner cylinder chamber (C2), that the cylinder (21) and the annular piston (22) relatively perform eccentric rotating motion, and that the rotating fluid machine has an eccentrically rotating piston mechanism (20) in which the cylinder chambers (C1, C2) are partitioned into first chambers (C1-Hp, C2-Hp) and second chambers (C1-Lp, C2-Lp). In order to prevent seizure and wear of the blade (23) and the annular piston (22) during operation and to prevent gas leakage between the first chambers (C1-Hp, C2-Hp) and the second chambers (C1-Lp, C2-Lp), the blade (23) and the annular piston (22) are relatively movably connected by an oscillation bush (27), and sliding surfaces (P1, P2) are provided on the blade (23), at sections at which the blade (23) is in contact with the annular piston (22) and the oscillation bush (27).

Description

technical field [0001] The present invention relates to a rotary fluid machine, and more particularly to a rotary fluid machine having an eccentric rotary piston mechanism in which a cylinder is disposed inside an annular cylinder chamber of a cylinder. The cylinder chamber is divided into an outer cylinder chamber and an annular piston in an inner cylinder chamber, and the cylinder and the annular piston relatively perform an eccentric rotational movement. Background technique [0002] Conventionally, as a rotary fluid machine equipped with an eccentric rotary piston mechanism in which an annular piston eccentrically rotates inside an annular cylinder chamber, there is a method of compressing refrigerant by changing the volume of the cylinder chamber accompanying the eccentric rotary motion of the annular piston. compressor (for example, refer to Patent Document 1). As shown in FIGS. 16 and 17 (cross-sectional view XVII-XVII in FIG. 16 : hatching omitted), in this compress...

Claims

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Application Information

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IPC IPC(8): F04C18/32F01C1/34F01C21/08F04C23/00F04C29/00
CPCF01C1/045
Inventor 增田正典
Owner DAIKIN IND LTD
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