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Rotary compressor

A technology of rotary compressors and cylinders, applied in rotary piston machines, rotary piston pumps, rotary piston/oscillating piston pump components, etc., can solve problems such as increased sliding loss

Active Publication Date: 2013-03-13
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, frictional resistance with the vane groove 10 acts at the contact points 201 and 202 of the vane 11 and the vane groove 10 as a reaction force of the support force, and the sliding loss due to the reciprocating movement of the vane 11 in the vane groove 10 increases.

Method used

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Embodiment approach 1

[0041] figure 1 It is a longitudinal sectional view of a rotary compressor provided with one compression mechanism unit 101 as an embodiment of the rotary compressor of the present invention, figure 2 is a cross-sectional view showing the compression mechanism.

[0042] Such as figure 1 The illustrated rotary compressor includes: a cylindrical airtight container 1; an electric motor unit 102 arranged on the upper side of the airtight container 1; Part 101 uses the bottom of the airtight container 1 as an oil tank.

[0043] The motor part 102 includes: the stator 2 installed annularly along the inner peripheral surface of the inner upper side of the airtight container 1; The direction is fixed to axis 4.

[0044] Such as figure 1 and figure 2 As shown, the compression mechanism part 101 has: a cylinder 5; a main bearing 7 and a sub-bearing 8 that connect the two end faces of the cylinder 5 to form a cylinder chamber 6; 4; the piston 9 fitted in the eccentric portion...

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PUM

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Abstract

Disclosed is a vane rotary-type rotary compressor wherein the opposite eccentric shaft-side outer peripheral surface of an eccentric portion (41) of a shaft (4) is deviated further inward than the outer peripheral surface of a main shaft portion (42) to be fitted in a main bearing (7) and the outer peripheral surface of a subsidiary shaft portion (43) to be fitted in a subsidiary bearing (8), and clearance means necessary when a piston (9) is assembled with the shaft (4) are provided on the inner peripheral surface of the piston (9) and the eccentric portion (41) of the shaft (4), so that the shaft diameter of the eccentric portion (41) is reduced. Thus, the viscous force of oil applied to the eccentric portion (41) of the shaft (4) and the inner peripheral surface of the piston (9) can be reduced, and the rotational moment around the center of the eccentric portion (41) of the shaft (4), which is applied to the piston (9) in the rotational direction of the shaft (4), can be reduced. Therefore, the sliding loss generated due to the reciprocation of a vane (11) within a vane groove (10) can be reduced.

Description

technical field [0001] The present invention relates to a rotary compressor incorporated in refrigerators, air conditioners, and the like. Background technique [0002] State-of-the-art rotary compressors such as Figure 7 and Figure 8 As shown, a motor unit (not shown) and a compression mechanism unit A connected to the motor unit via a shaft 4 are housed in the airtight container 1 , and the bottom of the airtight container is used as an oil tank. The compression mechanism part A includes: a cylinder 5; a main bearing 7 and a sub-bearing 8 that are connected to both end faces of the cylinder 5 to form a cylinder chamber 6; a shaft 4 with an eccentric portion 41 between the main bearing 7 and the sub-bearing 8; Piston 9 fitted to eccentric portion 41 of shaft 4 ; and vane 11 reciprocating in vane groove 10 formed in the radial direction of cylinder 5 . In this way, the suction chamber 12 and the compression chamber 13 separated by the vane 11 are formed in the cylinder c...

Claims

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Application Information

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IPC IPC(8): F04C18/324F04C29/00
CPCF04C29/00F04C2240/60F04C29/0057F04C18/324F04C18/04
Inventor 苅野健船越大辅饭田登泽井清
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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