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Compressor and refrigerating cycle apparatus using the same

a technology of compressor and refrigerating cycle, which is applied in the direction of machines/engines, liquid fuel engines, lighting and heating apparatus, etc., can solve problems such as becoming problems, and achieve the effect of ensuring the reliability of the compressor and the refrigerating cycle apparatus using the compressor

Inactive Publication Date: 2013-07-04
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention prevents the breakdown and combining of refrigerant and refrigerating machine oil in the compressor, which reduces the formation of sludge. It also maintains the smooth operation of moving parts, like the vane and piston, ensuring the compressor's reliability and the continued performance of the refrigerating cycle.

Problems solved by technology

HFC refrigerants mentioned above, which are hard to decompose in atmospheric air and very high in global warming potential (hereinafter, referred to as GWP), have been becoming an issue from the viewpoint of global environment protection.

Method used

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  • Compressor and refrigerating cycle apparatus using the same
  • Compressor and refrigerating cycle apparatus using the same
  • Compressor and refrigerating cycle apparatus using the same

Examples

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embodiment

[0052]FIG. 1 shows a basic refrigerating cycle apparatus according to an embodiment of the invention. This refrigerating cycle apparatus, as shown in FIG. 1, has a compressor 120. The compressor 120 compresses a low-temperature, low-pressure refrigerant gas and discharges out a high-temperature, high-pressure refrigerant gas toward a condenser 121. The refrigerant gas fed to the condenser 121, while releasing its heat into the air, becomes a high-temperature, high-pressure refrigerant liquid, thus being fed to an expansion mechanism (e.g., expansion valve or capillary tube) 122. The high-temperature, high-pressure refrigerant liquid passing through the expansion mechanism 122 is transformed into a low-temperature, low-pressure wet steam by a restriction effect, thus being fed to an evaporator 123. The refrigerant having entered into the evaporator 123 absorbs heat from vicinities, evaporating. Then, the refrigerant gas coming out from the evaporator 123 is sucked into the rotary com...

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PUM

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Abstract

In a compressor, a single refrigerant of hydrofluoroolefin having a double bond of carbon or a mixed refrigerant containing hydrofluoroolefin and hydrofluorocarbon having no double bond of carbon is used, and moreover a refrigerating machine oil containing an additive for suppressing deterioration of the refrigerating machine oil and an antiwear agent is used, the compressor including a sliding portion which is exposed to the mixed refrigerant and the refrigerating machine oil and which has a hardness of 47-55 HRC. Thus, decomposition and polymerization of the refrigerant and the refrigerating machine oil can be inhibited (i.e., occurrence of sludge can be inhibited), and antiwear property of sliding portions, e.g. vane and piston, of the compressor can be maintained. As a result, reliability of the compressor and the refrigerating cycle apparatus using the compressor can be ensured.

Description

TECHNICAL FIELD[0001]The present invention relates to a compressor, and a refrigerating cycle apparatus, using a refrigerant having a lower global warming potential and composed principally of a hydrofluoroolefin having a double bond of carbon.BACKGROUND ART[0002]Refrigerants to be used for compressors and for refrigerating cycle apparatuses using compressors have been moving to HFC (hydrofluorocarbon) series having an ozone depletion potential of 0 (hereinafter, referred to as HFC refrigerants).[0003]A compressor, and a refrigerating cycle apparatus, using an HFC refrigerant will be explained with reference to FIGS. 7 to 9 (see, e.g., PTLs 1 and 2).[0004]FIG. 7 is a longitudinal sectional view of a rotary compressor using an HFC refrigerant described in PTL 1.[0005]A stator 2a of a motor 2 is fixed at an upper portion of a closed container 1. A compression mechanism section 5 having a shaft 4 driven by a rotor 2b of the motor 2 is fixed at a lower portion of the closed container 1....

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D29/063
CPCF01C21/0809F04C18/3562F04C23/008F04C2230/22F04C2230/91F05C2201/0403F05C2251/10F05C2203/083F04D29/063F04C2210/26F04C2210/263F04C2230/21F05C2201/0433
Inventor ISHIDA, YOSHINORIIIDA, NOBORUOYAGI, SHINGOSATO, SHIGEHIRO
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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