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Refrigerant compressor and refrigeration appliance using same

a refrigeration appliance and compressor technology, applied in the direction of positive displacement liquid engine, pump components, piston pumps, etc., can solve the problems of noise generation, reducing compressor efficiency, and generating pressure loss, so as to enhance compressor efficiency and refrigeration appliances, reduce the delay in opening the discharge valve, and reduce the sound of striking

Inactive Publication Date: 2017-01-12
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a refrigerant compressor with an improved design that reduces delay in opening and closing valves caused by adhesive force of refrigeration oil. This design also reduces striking sounds during closing of the valves. These improvements lead to improved compressor efficiency and a quieter refrigeration appliance.

Problems solved by technology

Accordingly, a valve opening operation is obstructed by an adhesion force of refrigeration oil 2 interposed between contact surfaces of valve plate 17 and the respective valves and hence, resistance which a passing working fluid receives is increased and a pressure loss is generated thus giving rise to a drawback that efficiency of the compressor is lowered.
The striking sound leaks to the outside of the sealed container thus giving rise to a drawback that noises are generated.

Method used

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  • Refrigerant compressor and refrigeration appliance using same
  • Refrigerant compressor and refrigeration appliance using same
  • Refrigerant compressor and refrigeration appliance using same

Examples

Experimental program
Comparison scheme
Effect test

first exemplary embodiment

[0052]FIG. 1 is a cross-sectional view of a refrigerant compressor according to a first exemplary embodiment of the present invention. FIG. 2 is an exploded perspective view showing a valve plate of the refrigerant compressor and parts around the valve plate according to the first exemplary embodiment of the present invention. FIG. 3 is a cross-sectional view showing a main part of the refrigerant compressor according to the first exemplary embodiment of the present invention. FIG. 4 is a plan view of a suction valve of the refrigerant compressor according to the first exemplary embodiment of the present invention. FIG. 5 is a plan view of a discharge valve of the refrigerant compressor according to the first exemplary embodiment of the present invention. FIG. 6 is a plan view of the valve plate on a suction side of the refrigerant compressor according to the first exemplary embodiment of the present invention. FIG. 7 is a cross-sectional view of a surface treatment applied to the r...

second exemplary embodiment

[0109]FIG. 9 is a cross-sectional view of a main part of a refrigerant compressor according to a second exemplary embodiment of the present invention. FIG. 10 is a plan view of a valve plate on a discharge side of the refrigerant compressor according to the second exemplary embodiment of the present invention.

[0110]The basic configuration of this exemplary embodiment is equal to the configuration in FIG. 1 to FIG. 5 showing the first exemplary embodiment of the present invention and hence, the description of the basic configuration of this exemplary embodiment is omitted. The constitutional parts identical with the constitutional parts described in FIG. 1 to FIG. 5 are given the same symbols, and the description of these constitutional parts is partially omitted.

[0111]In the refrigerant compressor of this exemplary embodiment, synthetic resin film 160 is formed on at least a region of valve plate 117 which is brought into contact with arm portion 121b (see FIG. 5) of discharge valve...

third exemplary embodiment

[0126]FIG. 11 is a schematic view showing a configuration of a refrigeration appliance according to a third exemplary embodiment of the present invention. In this exemplary embodiment, the refrigeration appliance has a configuration that the refrigerant compressor described in the first exemplary embodiment or the second exemplary embodiment of the present invention is mounted on a refrigerant circuit, and only the basic configuration of the refrigeration appliance is schematically described.

[0127]In FIG. 11, the refrigeration appliance includes: body 201 formed of a heat-insulating box body having one surface thereof opened and a door body which opens and closes the opening; partition wall 207 which partitions the inside of body 201 into article storage space 203 and machine chamber 205; and refrigerant circuit 209 which cools the inside of storage space 203.

[0128]Refrigerant circuit 209 is formed by annularly connecting the refrigerant compressor described in the first exemplary e...

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PUM

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Abstract

A synthetic resin film is formed on a region of a valve plate (117) which is brought into contact with an arm portion of a suction valve (120) or a region of the valve plate (117) which is brought into contact with an arm portion of a discharge valve (121). With such a configuration, delay in opening of the suction valve (120) or the discharge valve (121) caused by adhesion force of refrigerating oil is suppressed so that a pressure loss in a suction stroke or a discharge stroke can be reduced whereby compressor efficiency is enhanced. Further, a striking sound generated at the time of closing the suction valve (120) or the discharge valve (121) is reduced by an elastic effect of the synthetic resin film so that the reduction of noises is realized.

Description

TECHNICAL FIELD[0001]The present invention relates to enhancement of efficiency and reduction of noises of a refrigerant compressor used mainly in a household-use refrigerator.BACKGROUND ART[0002]In keeping with a trend of energy saving of household-use refrigerator, along with the progress of a variable-speed operation using an inverter or a sensor control and the expansion of the scope of the variable-speed operation, there has been a demand for steady increase of efficiency of a refrigerant compressor.[0003]As a conventional refrigerant compressor, there has been known a refrigerant compressor where a valve plate is disposed on an opening end of a cylinder, has a suction valve seat disposed so as to surround a suction hole and a discharge valve seat disposed so as to surround a discharge hole, and is formed by molding using a sintered metal material (see Patent Literature (PTL) 1, for example).[0004]FIG. 22 is a cross-sectional view of the conventional refrigerant compressor desc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B39/10
CPCF04B39/1066F04B35/04F04B39/023F04B39/1073F04B39/123
Inventor OYAGI, SHINGOISHIDA, YOSHINORIFUTAGAMI, YOSHIYUKI
Owner PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE