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Compressor and method of manufacturing the same

a compressor and manufacturing method technology, applied in the field of compressors, can solve the problems of increasing the manufacturing cost of the compressor, leakage of refrigerant, complex shape of the airtight container, etc., and achieves the effects of improving durability, high pressure, and easy fixing of the sleeve to the airtight container

Inactive Publication Date: 2005-04-07
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The present invention provides a compressor designed to surely prevent leakage of a refrigerant gas from a connection portion between an airtight container and a pipe to the outside at low costs.

Problems solved by technology

Consequently, when a tip of the bolt which connects the pipe to the airtight container projects therein, i.e., when the bolt penetrates the airtight container, there occurs a problem of leakage of the refrigerant of the intermediate pressure from an engaging portion of the bolt with the airtight container to the outside.
However, even when the pipe connection portion is formed by cutting, a shape of the airtight container becomes complex, and manufacturing costs of the compressor increase.
Furthermore, even when the pipe connection portion is formed by welding another member to the airtight container, welding heat causes a drop in strength of the airtight container.

Method used

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  • Compressor and method of manufacturing the same
  • Compressor and method of manufacturing the same
  • Compressor and method of manufacturing the same

Examples

Experimental program
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Effect test

first embodiment

[0045]FIG. 1 is a vertical sectional view showing a rotary compressor 10 as a compressor of an internal intermediate pressure type multistage (2 stage) compression system which comprises first and second rotary compression elements 32, 34 according to an embodiment.

[0046] The rotary compressor 10 is a rotary compressor of an internal intermediate pressure type multistage compression system which is mounted in an engine room of a vehicle such as an electric car (HEV or PEV), and uses carbon dioxide (CO2) for a refrigerant. This rotary compressor 10 comprises a cylindrical airtight container 12 made of aluminum, an electric element 14 received in an upper side of an internal space of the airtight container 12, and a rotary compression mechanism section 18 as a compression element received in a lower side of the internal space of the airtight container 12.

[0047] The electric element 14 comprises a stator 22 annularly formed along an inner peripheral surface of an upper space of the a...

second embodiment

[0085]FIG. 5 is an enlarged sectional view of a connection portion between an airtight container 12A and a refrigerant introduction pipe 94 according to a second embodiment of the present invention. A connection portion of the airtight container 12A with a refrigerant discharge pipe 96 is similar in structure to the above.

[0086] According to the embodiment, a structure between the container main body 12A and a connection sleeve 73, and a structure between the connection sleeve 73 and the refrigerant introduction pipe 94 are different from those of the first embodiment. That is, according to the embodiment, a connection sleeve 73A is made of aluminum as in the case of the airtight container 12A. No gasket is disposed between the container main body 12A and the connection sleeve 73A. An end surface of the connection sleeve 73A on the airtight container 12A side is crushed by the airtight container 12A to be bonded thereto. No gasket is disposed between the connection sleeve 73 and th...

third embodiment

[0090] Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a vertical sectional view showing a rotary compressor 210 as a compressor of an internal intermediate pressure type multistage (2 stage) compression system which comprises first and second rotary compression elements 232, 234 according to an embodiment of the invention.

[0091] The rotary compressor 210 is a rotary compressor of an internal intermediate pressure type multistage compression system which uses carbon dioxide (CO2) for a refrigerant. This rotary compressor 210 comprises a cylindrical airtight container 212 made of aluminum, an electric element 214 received in an upper side of an internal space of the airtight container 212, and a rotary compression mechanism section 218 as a compression element received in a lower side of the internal space of the airtight container 212.

[0092] Specifically, a height of the rotary compressor 210 is 220 mm (outer diameter 1...

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Abstract

An object is to provide a compressor capable of surely preventing leakage of a refrigerant gas from a connection portion between an airtight container and a pipe to the outside at low costs. The compressor comprises an airtight container to which a refrigerant introduction pipe is connected, and a compression element received in the airtight container to discharge the refrigerant into the same. The refrigerant introduction pipe has a cylindrical pipe main body, and a jaw-like flange portion formed in a tip of the pipe main body. A cylindrical connection sleeve is disposed between the refrigerant introduction pipe and the airtight container. A first bolt is disposed to connect the connection sleeve to the airtight container, and a second bolt is disposed to connect the connection sleeve to the flange portion of the refrigerant introduction pipe. The flange portion of the refrigerant introduction pipe hides the first bolt.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a compressor used for, e.g., an on-vehicle air conditioner or a water heater. [0002] The on-vehicle air conditioner or the water heater has conventionally comprised a refrigerant circuit constituted of a heat exchanger and a compressor. For example, the compressor comprises an electric element, and first and second compression elements connected to the electric element, and an airtight container which receives the electric element and the compression elements. The compressor drives the compression elements by the electric element, thereby compressing an introduced low-pressure refrigerant at the first compression element and feeing the refrigerant into the airtight container by intermediate pressure. Further, the compressor compresses the refrigerant of the intermediate pressure in the airtight container at the second compression element, and discharges the refrigerant by high pressure. A plurality of pipes are conn...

Claims

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Application Information

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IPC IPC(8): F04B39/12F04C18/356F04C23/00F04C29/00F25B1/04
CPCF04B39/123F04C18/3564F04C23/001F04C23/008Y10S417/902F25B1/04Y10T29/4924Y10T29/49236Y10T29/49238F05C2201/021F04C2240/806F04C23/00F04C18/356F04C29/00
Inventor EBARA, TOSHIYUKIMATSUMORI, HIROYUKISATO, TAKASHIMATSUURA, DAISAITO, TAKAYASU
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD