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Closed type compressor and freezing apparatus using the same

A compressor and hermetic technology, applied in mechanical equipment, machines/engines, liquid displacement machinery, etc., can solve the problems of increased wear, early wear of piston 23, increased sliding loss, etc.

Active Publication Date: 2012-08-29
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even in the conventional hermetic compressor having a convex-shaped inner wall in the small end hole portion 29, there are still problems such as early wear of the piston 23, increased wear amount, and increased sliding loss.

Method used

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  • Closed type compressor and freezing apparatus using the same
  • Closed type compressor and freezing apparatus using the same
  • Closed type compressor and freezing apparatus using the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] figure 1 It is a longitudinal sectional view of the hermetic compressor in the preferred embodiment 1 of the present invention. figure 2 is an enlarged sectional view of the main part when the compressive load is not acting in the same preferred embodiment. image 3 is an enlarged sectional view of a main part when a compressive load acts in the same preferred embodiment. Figure 4 It is a sectional view of main parts showing the relative positions of the bearing portion and the compression chamber in the same preferred embodiment. Figure 5 is a characteristic diagram showing the results of experiments based on the same preferred embodiment.

[0051] exist Figure 1 to Figure 3 Among them, a closed container 101 accommodates a motor drive element 104 having a stator 102 and a rotor 103 , and a compression element 105 driven by the motor drive element 104 . Lubricating oil 106 is contained at the bottom of the airtight container 101 .

[0052] The shaft 110 has a...

example 2

[0085] In preferred embodiment 1, the compression chamber 115 is formed by inclining the axis D of the compression chamber 115 corresponding to the inclination of the piston 123 . However, in the present preferred embodiment, in addition to the configuration of the preferred embodiment 1, a tapered portion for forming the compression chamber 115 is formed in the cylindrical hole portion 116 . Therefore, in this preferred embodiment, explanations about the same configuration as in preferred embodiment 1 are omitted, and configurations different from preferred embodiment 1 are mainly explained.

[0086] Figure 1 to Figure 4 Also applicable to this preferred embodiment. Figure 7 is a sectional view of the main part near the compression chamber in this preferred embodiment, showing a state where the piston is located at the bottom dead center. Figure 8 is a sectional view of main parts near the compression chamber in the same preferred embodiment, showing a state in which the...

example 3

[0127] In preferred embodiments 1 and 2, the compression chamber 115 is formed by inclining the axis of the compression chamber 115 corresponding to the inclination of the piston 123 . However, in the present preferred embodiment, the pin hole is formed by inclining the axis center of the pin hole corresponding to the inclination of the connecting rod which is caused to inclination by the inclination of the shaft 110 when the compression load of compressing refrigerant gas acts.

[0128] Figure 10 It is a vertical sectional view of the hermetic compressor in this preferred embodiment. Figure 11 is an enlarged sectional view of the main part when the compressive load is not acting in the same preferred embodiment. Figure 12 is an enlarged sectional view of a main part when a compressive load acts in the same preferred embodiment. Figure 13 is a cross-sectional view of main parts showing the relative positions of the piston and the pin hole in the same preferred embodiment...

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PUM

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Abstract

A bearing part (120) and a compression chamber (115) are disposed so that a first central line (141) showing the axial center of the bearing part (120) and a second central line (142) showing the axial center of the compression chamber (115) may intersect with each other, angle a1 formed between the first central line (141) and the second central line (142), and predetermined angle b1 may satisfythe relation of formula 1 and angle b1 is set by relating to absolute value c1 of inclination angle of a shaft (110) with respect to the bearing part (120) based on the clearance of the bearing part (120) and the main shaft part (111), and thereby prying between a piston and the compression chamber (115) can be prevented.

Description

technical field [0001] The present invention relates to a hermetic compressor used in a refrigerating cycle of a freezer, refrigerator, etc., and freezing and refrigerating equipment using the hermetic compressor. Background technique [0002] Recently, hermetic compressors for freezers, refrigerators, and other freezing and refrigerating equipment are required to increase efficiency to reduce power consumption, and to reduce noise and improve reliability. Among such conventional hermetic compressors, some have improved efficiency and stability by changing an oil supply method to a joint between a connecting rod and a piston (see, for example, PTL1). [0003] An example of the conventional hermetic compressor will be described below with reference to the drawings. Figure 20 is a longitudinal sectional view of a conventional hermetic compressor disclosed in Patent Document 1. Figure 21 yes Figure 20 Enlarged cross-sectional view of the main part. Figure 22 yes Figure 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/02F04B39/12
CPCF04B39/0253F04B39/023F04B39/122
Inventor 明石浩业森田一郎取枡宏树小林正则
Owner PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
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