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Rotary compressor and method for making pump body component of rotary compressor

A rotary compressor and pump body technology, applied in the field of compressors, can solve the problems of low precision, resource waste, and low processing efficiency, and achieve the effects of improving dimensional accuracy, reducing material waste, and improving blank precision

Inactive Publication Date: 2015-04-29
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current related technology, the processing of cylinders, upper and lower bearings, crankshafts, sliding plates, and pistons is usually processed by sand casting the casting blanks and then processed. Due to the low precision of sand castings and large deformation, the parts holes and slots are not set. The process of processing casting blanks into cylinders, upper and lower bearings, and crankshafts is very complicated, with low processing efficiency, high cost, and a lot of waste materials, resulting in waste of resources and harm to the environment.

Method used

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  • Rotary compressor and method for making pump body component of rotary compressor
  • Rotary compressor and method for making pump body component of rotary compressor
  • Rotary compressor and method for making pump body component of rotary compressor

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Preparation of cylinder, upper bearing castings for rotary compressors, comprising the following production steps:

[0046] (1) Use paraffin or foam to bond the model of the cylinder and upper bearing;

[0047] (2) Dip-coat the refractory paint on the model surface of the cylinder in the step (1) and the upper bearing, and dry;

[0048] (3) The models of the dried cylinder and the upper bearing are respectively buried in the sand box for molding;

[0049] (4) Molten liquid metal is poured into the sand box after the sand-buried molding is under negative pressure, so that the model can be vaporized and extracted while being replaced by liquid metal casting;

[0050] (5) Cool and shake out the sand box after casting and replacement, so as to obtain the cylinder and upper bearing blanks.

[0051] The blanks of the cylinder and upper bearing only need to be processed by simple processes such as grinding the surface, sliding groove, grinding the inner circle, etc., to obta...

Embodiment 2

[0054] Preparation of rotary compressor crankshaft castings comprising the following production steps:

[0055] (1) Use paraffin or foam to bond the model of the crankshaft;

[0056] (2) Dip-coat refractory paint on the model surface of crankshaft in step (1), and dry;

[0057] (3) The model of the crankshaft after drying is carried out in the sand box to bury sand molding respectively;

[0058] (4) Molten liquid metal is poured into the sand box after the sand-buried molding is under negative pressure, so that the model can be vaporized and extracted while being replaced by liquid metal casting;

[0059] (5) Cooling and shaking out the sand box after casting and replacement, so as to obtain a crankshaft blank.

[0060] The eccentric part and oil outlet hole have been formed on the crankshaft blank, and the crankshaft blank only needs to be processed by simple processes such as grinding the main and auxiliary shafts and thrust parts to obtain the finished crankshaft.

[006...

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Abstract

The invention discloses a rotary compressor and a method for making a pump body component of the rotary compressor. The rotary compressor comprises a pump body assembly, wherein the pump body assembly comprises an upper bearing, a lower bearing, a cylinder, a piston, a slip sheet and a crankshaft; and at least one of the upper bearing, the lower bearing, the cylinder, the piston, the slip sheet and the crankshaft is produced by virtue of evaporative pattern casting. Therefore, the casting blank precision can be obviously improved, the working allowance is almost avoided, the material waste is reduced, the size accuracy of each pump body component is improved, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of compressors, in particular, the invention relates to a rotary compressor and a method for preparing a pump body assembly of the rotary compressor. Background technique [0002] The compression assembly of the rotary compressor is composed of a cylinder, a crankshaft that rotates eccentrically in the center of the cylinder, a piston sleeved on the eccentric part of the crankshaft, and a slide that contacts the piston and divides the cylinder into a high-pressure chamber and a low-pressure chamber. The cylinder accommodates the slide groove of the slide, and the main bearing and the auxiliary bearing arranged on both sides of the cylinder. The compression work of the rotary compressor is completed in the circular cylinder. Generally, the compressor cylinder needs to be fixed together with the upper and lower bearings to form a cavity. The cylinder is generally designed with fixed threaded holes, installation position...

Claims

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Application Information

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IPC IPC(8): F04C18/356F04C29/00B22D18/04
CPCF04C18/3564B22D18/04F04C29/00F04C2230/21
Inventor 夏小鸽龙春仙
Owner GUANGDONG MEIZHI COMPRESSOR