Rotary vane compressor with hydrofluoroolefin refrigerant gas and high speed tool steel vane

A rotary compressor, hydrofluoroolefin technology, applied in the direction of rotary piston machinery, rotary piston pump, pump combination for elastic fluid rotary piston type/oscillating piston type, etc., to achieve low cost and high reliability , the effect of preventing abrasive wear

Inactive Publication Date: 2012-05-23
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] HFC (Hydrofluorocarbon) systems with zero ozone depletion potential are gradually being used as working refrigerants for conventional refrigeration devices, but on the other hand, since HFC-based refrigerants have a very high global warming potential, HFC-based refrigerants have recently Refrigerants also cause problems

Method used

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  • Rotary vane compressor with hydrofluoroolefin refrigerant gas and high speed tool steel vane
  • Rotary vane compressor with hydrofluoroolefin refrigerant gas and high speed tool steel vane
  • Rotary vane compressor with hydrofluoroolefin refrigerant gas and high speed tool steel vane

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Embodiment 1

[0024] figure 1 It is a longitudinal sectional view showing the rotary compressor in Embodiment 1 of the present invention. Such as figure 1 As shown in , the stator 2a of the motor 2 is fixed to the upper area of ​​the airtight container 1, and the compression mechanism part 5 having the shaft 4 driven by the rotor 2b is fixed to the lower area of ​​the airtight container 1. For example, the main bearing 7 is fixed to the top surface of the cylinder 6 of the compression mechanism portion 5 and the sub-bearing 8 is fixed to the bottom surface of the cylinder 6 using bolts. In the cylinder 6, the piston 9 is placed in the eccentric region 4a of the shaft 4, so that the shaft performs an eccentric rotation.

[0025] In addition, what is stored in the bottom region of the airtight container 1 is miscible with a refrigerant (hereinafter, referred to as refrigerant R) containing a carbon-carbon double bond-containing hydrofluoroolefin (for example, HFO1234yf) as an essential co...

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Abstract

A2 refrigerant mainly containing a carbon-carbon double bond-containing hydrofluoroolefin has a function to suppress abrasive wear, compared to conventional HFC-based refrigerants, because the hydrofluoroolefin generates iron fluoride especially on the surface of the vane and piston, where sliding force is severe, from hydrogen fluoride, even if it is generated in reaction with water and oxygen. It is possible to reduce abrasive wear, by using a refrigerant containing as the base component a hydrofluoroolefin as operating refrigerant and a refrigeration oil 3 miscible with the refrigerant and a vane 10 made of a high-speed tool steel and sintered and quenched, because hydrogen fluoride generated by decomposition of the refrigerant in the region of a vane tip region 10a and a piston 9 peripheral surface, where sliding force is severe is converted to iron fluoride. It is also possible to obtain a hardened structure containing carbides of W, Mo, Cr and V dispersed in a fine martensite matrix and produces the rotary compressor more cost-effectively by quenching and sintering the vane 10.

Description

technical field [0001] The present invention relates to ensuring the reliability of a rotary compressor using as a working refrigerant a refrigerant mainly containing a carbon-carbon double bond-containing hydrofluoroolefin containing no chlorine atoms and having a low global warming potential, Used in refrigeration cycles such as room air conditioners, refrigerators and other air conditioning devices. Background technique [0002] HFC (Hydrofluorocarbon) systems with zero ozone depletion potential are gradually being used as working refrigerants for conventional refrigeration devices, but on the other hand, since HFC-based refrigerants have a very high global warming potential, HFC-based refrigerants have recently Refrigerants also caused problems. Therefore, a refrigeration device using a refrigerant mainly containing a carbon-carbon double bond-containing hydrofluoroolefin containing no chlorine atoms and having a low global warming potential is being studied. In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/356
CPCF01C21/0809F04C18/3564F04C23/008F05C2203/083F04C2230/92F04C2230/22
Inventor 中野雅夫饭田登苅野健
Owner PANASONIC CORP
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