Method for assembling pump-body of compressor with revolving twin cylinder

A technology of rotary compressor and assembly method, which is applied in the direction of rotary piston pump, rotary piston machine, pump combination for elastic fluid rotary piston type/oscillating piston type, etc., which can solve the complex process and increase the cumulative error and other problems to achieve the effect of reducing the process, reducing the cumulative error and speeding up the production tempo

Active Publication Date: 2006-07-05
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0026] According to the third double-cylinder pump body assembly method, the upper and lower mufflers need to be assembled through a special process, and the pump body needs to be turned over by a manipulator once (process five), which is more complicated
The lower cylinder is fixed on the upper cylinder, and the adjustment of the lower eccentric is based on the upper cylinder head, so the cumulative error is increased

Method used

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  • Method for assembling pump-body of compressor with revolving twin cylinder
  • Method for assembling pump-body of compressor with revolving twin cylinder
  • Method for assembling pump-body of compressor with revolving twin cylinder

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Embodiment Construction

[0063] The pump body assembly method of the double-cylinder rotary compressor of the present invention includes the following steps:

[0064] See figure 1 As shown, this is a cross-sectional view of the piston and crankshaft assembly in a rotary compressor.

[0065] Step 1: Determine the upper and lower eccentric dimensions of the crankshaft 4; install the upper piston 9a and the lower piston 9b on the upper eccentric part 4c and lower eccentric part 4d of the crankshaft 4 respectively; measure the outer diameter of the upper piston 9a with an electric measuring instrument The maximum distance Amax from the outer diameter of the long axis 4a of the crankshaft 4 on the opposite side, that is, the upper eccentricity; measure the maximum distance from the outer diameter of the lower piston 9b to the outer diameter of the same side of the short axis 4b of the crankshaft 4 with an electric measuring instrument, that is, the lower eccentricity Cmax.

[0066] See figure 2 As show...

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Abstract

A method for assembling pump of double cylinder rotary compressor includes forming M assembly by confirming top and bottom eccentric dimension and setting top and bottom piston on them as well as measuring maximum distance of top piston outer diameter ( OD ) to long shaft another side OD and bottom piston OD to short shaft the same side OD, setting top silencer and top cylinder cover as well as top cylinder, regulating them and inserting piston and crankshaft; forming N assembly by setting intermediate plate and bottom cylinder, regulating and fixing them; laying bottom cylinder cover and bottom silencer down then fixing them.

Description

technical field [0001] The invention relates to an assembly method of a pump body of a compressor, in particular to an assembly method of a pump body of a double-cylinder rotary compressor with two eccentric crankshafts with a phase difference of 180°. Background technique [0002] The main part of the pump body of the prior art rotary compressor is composed of the crankshaft and the cylinder, and the assembly clearance in the pump body of the compressor directly affects the leakage from the high pressure chamber inside the compressor to the low pressure chamber. This leakage includes the leakage of the eccentric clearance (the clearance between the outer diameter of the piston and the inner diameter of the cylinder), the leakage of the clearance of the blade groove, and the leakage of the clearance in the height direction of the cylinder, piston and blade. Among the three kinds of clearance leakage, the eccentric clearance leakage accounts for a large proportion, so control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C23/00F04C18/00
Inventor 戴虎明张海锋吕毅宏刘有韵
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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