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Compressor

Inactive Publication Date: 2006-04-06
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] Accordingly, the invention has an object to provide a compressor which enables easy installation of a filter even when any refrigerant suction passage cannot be provided on a cylinder side of a compression element or even when any long suction passage cannot be provided.
[0012] In the first aspect of the invention, the filter is fitted into the recess provided at the outlet of the refrigerant passage of the bearing member, which passage leads to the suction port of the cylinder constituting the compression element, and the filter is pressed against and stopped by the cylinder. This enables easy installation of the filter even when any refrigerant suction passage cannot be provided on the cylinder side or even when any long suction passage cannot be provided. Accordingly, this can surely avoid the occurrence of inconveniences, including wear or locking of sliding parts of the rotary compression element.

Problems solved by technology

This method of installation of the filter suffers from the problem that the filter cannot be often installed when the refrigerant suction passage cannot be provided in the cylinder constituting the compression element, or when a long refrigerant suction passage cannot be provided.

Method used

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first preferred embodiment

[0023] The first preferred embodiment of the invention will be described below in detail with reference to FIGS. 1 to 3.

[0024]FIG. 1 is a longitudinal sectional view showing a multistage (two-stage) compression type rotary compressor of an inside high-pressure type 10 which includes first and second rotary compression elements 32 and 34 according to the first embodiment. FIG. 2 is a plain view of a filter of the embodiment, and FIG. 3 is a sectional view of the filter of the embodiment. For simple understanding, in FIGS. 1 to 3, elements that have the same functions as those explained in FIGS. 6 and 7 are given the same reference numerals.

[0025] Referring to FIG. 1, the multistage (two-stage) compression type rotary compressor of the inside high-pressure type 10 is designed to compress a carbon dioxide (CO2) which is to be used as a refrigerant for an air conditioning system. The rotary compressor 10 comprises a cylindrical sealed container 12 made of a steel plate, a drive elemen...

second preferred embodiment

[0046] Now, the second preferred embodiment of the invention will be described below in detail with reference to FIGS. 2 to 5. Elements of the second embodiment that are in common to those in the first embodiment will be given the same reference numerals, and explanation thereof will be omitted below.

[0047] In the second embodiment, on the outlet sides of the refrigerant introduction pipes 92 and 94, the plate-like filter 184 is holded and fixed between the first rotary compression element 32 and the refrigerant introduction pipe 92, and the plate-like filter 186 between the second rotary compression element 34 and the refrigerant introduction pipe 94.

[0048]FIG. 5 is an enlarged view of the principal part of the first rotary compression element 32. The second rotary compression element 34 has the same construction as that of the first rotary compression element 32, and thus explanation of the second rotary compression element will also be given simultaneously below.

[0049] In more...

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Abstract

A compressor is provided which enables easy installation of the filter even when any refrigerant suction passage cannot be provided on a cylinder side of a compression element or even when any long suction passage cannot be provided. The compressor comprises, in a sealed container 12, a drive element 14, a rotary compression mechanism 18 including first and second rotary compression elements 32 and 34, an upper support member 54 and a lower support member 56 for journaling a rotary shaft 16. The upper support member 54 and the lower support member 56 are provided with suction passages 58 and 60 for communicating with the interior of upper and lower cylinders 38 and 40 at suction ports 161 and 162, respectively, and recessed noise eliminating chambers 62 and 64. Filter installation portions 180 and 182 which are recessed are provided to surround and enclose open ends of the suction passages 58 and 60. Filters 184 and 186 are inserted into and installed on the filter installation portions 180 and 182, respectively, and the filter 184 is pressed against and stopped by the upper surface of the upper cylinder 38, while the filter 186 is pressed against and stopped by the lower surface of the lower cylinder 40.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a compressor for compressing a refrigerant suitable for use in, for example, an air conditioning system, a water heater, a car air conditioner, a showcase, a freezer and refrigerator, or a refrigeration unit such as an automatic dispenser. [0003] 2. Description of the Related Art [0004] In such a conventional compressor, for example, in a multistage compression type rotary compressor of an inside high-pressure type as disclosed in, for example, JP-A-2004-19599, refrigerant gas is drawn into a low pressure chamber side of a cylinder from a refrigerant introduction pipe via a suction port of a first rotary compression element. The refrigerant gas is then compressed by operations of a roller and a vane to become intermediate pressure. The intermediate pressure refrigerant gas is discharged from a high pressure chamber side of the cylinder through a discharge port, a noise eliminating ch...

Claims

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Application Information

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IPC IPC(8): F04B35/04F04B17/00
CPCF04C23/001F04C23/008F04C29/0092F04C2230/60F01C21/106F01C21/108F04C18/0207F04C18/3564F04C29/00F04B39/00F04B39/16
Inventor SATO, KAZUYA
Owner SANYO ELECTRIC CO LTD