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rotary compressor

A compressor and rotary technology, applied in the direction of rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve the problems of increased friction, decreased compressor efficiency, low strength, etc., and achieve the effect of improving efficiency

Active Publication Date: 2015-09-30
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the portion of the crankshaft acting on the upper bearing portion is a hollow shaft, its strength is low.
As a result, the portion of the hollow shaft of the crankshaft that acts on the upper bearing is deformed by the torque and the load, which may increase the frictional force with the upper bearing. The efficiency of the compressor decreases

Method used

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Embodiment Construction

[0051] Hereinafter, an embodiment will be described using the drawings.

[0052] A crankshaft 2 having an eccentric portion that transmits the rotation of the motor part and a compression mechanism part are provided in an airtight container 1 serving as a casing of the compressor. The compression mechanism part includes: a working cylinder 3; a roller 4 arranged in the working cylinder 3 and driven to rotate by the eccentric part of the crankshaft 2; The vane that moves in and out of the storage part provided in the working cylinder 3; the upper end surface of the working cylinder 3 is closed and the upper bearing 6 that holds the bearing part of the crankshaft 2; the lower part of the working cylinder 3 is closed The end surface has a lower bearing 7 that holds the bearing portion of the crankshaft 2 .

[0053] It should be noted that the upper bearing 6 is mainly composed of an upper bearing portion 6b and an upper bearing flat portion 6e. The upper bearing 6 is fixed to t...

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PUM

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Abstract

The invention provides a rotary compressor. The efficiency of the rotary compressor is improved by restraining the reduction in strength caused by holes of an oil feed path and holes of a flow path of foamable refrigerant gas in the oil feed path arranged on a crankshaft. The characteristics are that the length of the hole of the oil feed path arranged along the axial direction of the crankshaft is under the bearing underling end of a blocking part, and the blocking part is provided with a gas flow path which is used for conducting the oil feed path and the closed container.

Description

technical field [0001] The present invention relates to a rotary compressor for compressing refrigerant gas in refrigerating and air-conditioning systems and the like. Background technique [0002] In recent years, from the viewpoint of reducing environmental load, application of natural refrigerants and higher efficiency of compressors have been demanded. For example, in a refrigerating and air-conditioning system using carbon dioxide refrigerant among natural refrigerants, the difference between the discharge pressure and the suction pressure increases relative to the R410A refrigerant, so the load acting on each component constituting the compression mechanism unit increase. Therefore, in the prior art, how to reduce the allowable deformation of the compression mechanism portion and how to suppress mechanical loss has become a major issue. [0003] A rotary compressor that compresses refrigerant gas in a refrigerating and air-conditioning system or the like includes a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356
CPCF04C18/356F04C23/008F04C29/023F04C29/028F04C2210/26F04C2240/40Y10S415/00Y10S417/902
Inventor 土屋直洋岸康弘高野龙扶
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC