Crankcase used for refrigeration compressor

Abstract

The invention discloses a crankcase used for a refrigeration compressor. The crankcase used for the refrigerator compressor comprises a cylinder head, a cylinder face, a cylinder hole, a screw hole, an exhaust hole and a groove, wherein the cylinder face is arranged at the front end of the cylinder head, the cylinder face is a plane, and the cylinder hole, the screw hole and the exhaust hole are all arranged in the cylinder face; and the groove is arranged in the cylinder face and the groove is around the cylinder hole, the groove does not communicate with the cylinder hole, the exhaust hole and the screw hole, and the shortest distance between the edge of the groove and the cylinder hole, the exhaust hole and the screw hole is correspondingly 2 to 8 mm. The crankcase used for the refrigeration compressor can simultaneously improve the sealing character, heat dissipation performance and deformation resistance capability of a cylinder, thereby improving the performance and reliability of the compressor. The crankcase used for the refrigeration compressor is easy to implement, simple to operate, low in improvement cost, and flexible in combination manner, and can be put into mass production.

Description

technical field [0001] The invention relates to the field of refrigeration compressors, in particular to a crankcase for refrigeration compressors. Background technique [0002] At present, piston reciprocating compressors are widely used in the field of refrigeration compressors. In the piston reciprocating compressor, the cylinder part of the crankcase is its main working area, and the piston reciprocates at high speed in the cylinder to realize the circulation of the refrigerant in the compressor and the refrigerator. figure 1 Shown is exactly the structure of existing a kind of crankcase, and cylinder face 2 is arranged on the cylinder head 11, and screw hole 1, exhaust hole 3, cylinder bore 4 are all arranged on the cylinder face 2. The piston moves in the cylinder, and the suction components (including valve plate, valve plate, suction muffler, etc.) are fastened to the cylinder head 11 through screws and screw holes 1 . The characteristic requirements of the cylinde...

AI Technical Summary

Problems solved by technology

Some of the above measures have certain contradictions. For example, reducing the screw torque can reduce the deformation of the cylinder but is not conducive to sealing; while some processes are more complicated, such as optimizing the pouring process requires a lot of experimental verification (casting formula, pouring temperature, cavity design, etc. ); and some will increase more costs, such as the use of iron-based gaskets

Under the current development trend of miniaturization of compressors, complex processes and rising costs will become a major obstacle to product introduction to the market

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