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Rotary compressor

A rotary compressor and eccentric rotation technology, which is applied in the direction of rotary piston machines, rotary piston pumps, rotary piston/oscillating piston pump components, etc., can solve problems such as wear, scorching, and staggering, and achieve reduction Effects of bearing load capacity, avoidance of fluid leakage, and improvement of reliability

Active Publication Date: 2008-10-08
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when assembling the compression mechanism 120, if there is an error in the installation position of the main bearing 145a or the cylinder 121, the eccentric rotation center of the annular piston 122 and the center of the cylinder 121 may be displaced in the radial direction.
As a result, the interval of the above-mentioned minute gap varies with the eccentric position of the annular piston 122, which may result in a decrease in the compression efficiency of the compression mechanism 120 or wear of the contact portion between the annular piston 122 and the cylinder 121. ·Scorched phenomenon

Method used

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Embodiment 1

[0066] The rotary compressor of the first embodiment constitutes a so-called twin-cylinder compressor 1 in which refrigerant is compressed in two cylinder chambers formed on the same plane. The compressor 1 is used in a compression process for compressing refrigerant in a refrigerant cycle of a refrigerant circuit such as an air conditioner or a refrigeration device, for example.

[0067]

[0068] As shown in FIG. 1 , the compressor 1 includes a casing 10 , a motor 20 and a compression mechanism 30 .

[0069] The casing 10 constitutes a fully enclosed container with a long longitudinal length. The housing 10 includes a cylindrical housing 11 , an upper cover 12 fixed to the upper end of the housing 11 , and a lower cover 13 fixed to the lower end of the housing 11 . A suction pipe 14 penetrating through the housing 11 is provided on the lower side of the housing 11 . One end of the suction pipe 14 opens to the outside of the cabinet 10 , and the other end opens to the insi...

Embodiment 2

[0108] In the rotary compressor of the second embodiment, the configuration of the compression mechanism 30 is different from that of the compressor 1 of the first embodiment described above. Specifically, in the compression mechanism 30 of the above-mentioned first embodiment, the cylinder 60 on the movable side performs an eccentric rotational movement relative to the annular piston 43 on the fixed side, while in the compression mechanism 30 of the second embodiment, The annular piston 43 on the movable side performs eccentric rotational motion with respect to the cylinder 60 on the fixed side. Next, differences between the compressor 1 of the second embodiment and the first embodiment described above will be described.

[0109] As shown in FIG. 4 , the front head 40 is configured such that the first mirror plate 41 , the main bearing 45 and the cylinder 60 are integrally formed. The above-mentioned cylinder 60 is composed of a disc-shaped outer cylinder part 62 protruding ...

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Abstract

A cylinder (60) on the moving side is connected via an eccentric section (25) to a drive shaft (23) supported by a main bearing (45). On the other hand, an annular piston (43) on the stationary side is formed at a front head (40) integrally with the main bearing (45).

Description

technical field [0001] The present invention relates to a rotary compressor, in particular to an annular piston that divides the cylinder chamber into an outer cylinder chamber and an inner cylinder chamber in an annular cylinder chamber of the cylinder, and the cylinder and the annular cylinder chamber A rotary compressor in which the pistons rotate relative to each other eccentrically. Background technique [0002] Conventionally, as a rotary compressor having a plurality of cylinder chambers on the same plane, a compressor in which a piston and a cylinder relatively rotate eccentrically to compress refrigerant is known. [0003] For example, disclosed in Patent Document 1 Figure 8 and Figure 9 ( Figure 8 The compressor shown in the X-X line sectional view). In the compressor 100 , a compression mechanism 120 and a motor (not shown) are accommodated in a hermetic casing 110 as a driving mechanism for driving the compression mechanism 120 . [0004] The compression me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/32F04C29/00F04C29/12
CPCF04C18/3441F04C18/322F04C18/3564F04C23/008
Inventor 清水孝志芝本祥孝古庄和宏外岛隆造增田正典
Owner DAIKIN IND LTD
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