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Rotary piston type compressor pump assembly

A rotary piston and compressor technology, which is applied in the direction of rotary piston pumps, rotary piston machines, rotary piston/swing piston pump components, etc., can solve the problem of unsatisfactory effects, insufficient noise reduction, and complex shapes and other problems to achieve the effect of eliminating fatigue fracture, smooth flow channel and increasing stability

Active Publication Date: 2011-05-11
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above-mentioned upper muffler 12' can achieve a certain effect of noise reduction, usually the upper muffler 12' is a stamped part. Due to its complex shape and limited by the existing stamping technical conditions, the wall surface is often thin, and the effect is not ideal. Can not fully meet the needs of noise reduction

Method used

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  • Rotary piston type compressor pump assembly
  • Rotary piston type compressor pump assembly
  • Rotary piston type compressor pump assembly

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Embodiment Construction

[0027] Such as image 3 As shown, the rotary piston compressor using the pump body assembly of the present invention includes a housing 3, a motor with a trimmed stator 5, and a pump body assembly located below the motor. The pump body assembly includes a crankshaft 4, an upper and a lower cylinder The head assembly 1, 2' and the working chamber of the rotary piston compressor constituted by the upper and lower cylinder head assemblies 1, 2' together with the piston 6 and the blade 7.

[0028] The pump body assembly is fixed by welding (welding point 9) with the casing 3 through its upper cylinder head assembly 1 .

[0029] Referring to Figure 2(a)~(c), the upper cylinder head assembly is composed of an upper cylinder head 11 and an upper muffler 12, and its features are:

[0030] The outer ring of the upper cylinder head 11 has a groove 113 at the position corresponding to the cutting edge of the motor stator; the upper muffler 12 is a cover plate, and the outer ring of the u...

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Abstract

This invention is a pump body groupware of rotating piston type compressor. It is at the lower part of the electric engine with trimming stator. It includes lower and upper cylinder cover groupware. The upper cylinder cover groupware includes upper cylinder cover and upper silencer. The external ring of upper cylinder cover has groove at the engine stator trimming position. The upper silencer is a cover plate. Its appearance is the same as the shape of the external ring of upper cylinder cover. The silencer is fixed on the upper cylinder cover by matching its groove with the groove of upper cylinder cover external ring. This invention can effectively reduce the air exhausting noise of upper and lower cylinder covers. It prevents the silencer from fatigue breaking owing to the air exhaust interrupted impulsion. It can also reduce the oil circulating rate of refrigerating system and ensure the oil return effect of compressor. As the height of upper cylinder cover external ring is increased, the stability of pump body is increased.

Description

technical field [0001] The invention relates to an air conditioner rotary piston compressor, in particular to a pump body assembly of the rotary piston compressor. Background technique [0002] The air-conditioning rotary piston compressor includes a shell, a motor and a pump body assembly, wherein: the pump body assembly includes a crankshaft, an upper and a lower cylinder head, and the upper and lower cylinder heads, pistons, and vanes (a double-cylinder compressor includes a middle plate) Together constitute the working chamber of the rotary piston compressor. Also: the upper and lower cylinder heads together form the supporting bearing for the rotation of the crankshaft. [0003] The shell and pump body assembly of the rotary piston compressor are fixed by welding the upper cylinder head and the shell. [0004] Generally, the pump body assembly has an exhaust port on the lower cylinder head (the double cylinder and some single cylinders also have an exhaust port on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C29/00F04C29/06F04C29/12
Inventor 沈建芳丛丽曹进唐炳杰
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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