Semi-closed piston refrigeration compressor

Abstract

The invention discloses a semi-closed piston refrigeration compressor, which includes a shell, a wiring board, a valve plate, a crankshaft, a piston rod assembly, a motor, an ordinary-pressure inlet valve, a high-pressure outlet valve, a cylinder end cover, a compressor, and a cylinder body. A rotation axis of the motor is connected with the crankshaft, and the crankshaft is correspondingly installed in the compressor after the compressor is connected with the right end of the motor. An eccentric shaft of the crankshaft is connected with the piston rod assembly, and the piston in the piston rod assembly is installed in the cylinder body with evenly distributed laser reticulate patterns in the pinhole in wall. The upper end of the cylinder body is provided with a closed cylinder end cover, and the outer end of the cylinder end cover is provided a plurality of vibration-elimination grooves. An air inlet of the compressor is provided with the ordinary-pressure inlet valve, and an air outlet is provided with the high-pressure outlet valve. The shell is installed in the outside of the motor, the wiring board is installed in the upper end of the shell, and the valve plate is installed in the upper end of the compressor. The vibration-elimination grooves of the cylinder end cover have the advantage that fluid noise is reduced, and the piston rod assembly with ultra-precise mirror technological processing, the crankshaft and the cylinder inner wall with the laser reticulate patterns have the advantages that friction coefficient is greatly reduced, wear resistance and balance are improved, and working efficiency and energy efficiency gasification are increased.

Description

technical field [0001] The invention relates to the technical field of fluid refrigeration devices, in particular to a semi-hermetic piston refrigeration compressor. Background technique [0002] Refrigeration compressor is a kind of optional equipment in this refrigeration industry. It is driven by a motor. The compressor used in general small refrigeration equipment is relatively small. The working principle is that the motor drives the crankshaft to rotate, and the crankshaft drives the piston in the cylinder through the connecting rod. The reciprocating motion in the cylinder draws and compresses the steam medium from the atmospheric pressure intake valve and then sends it out to the condenser from the high pressure exhaust valve, so that the condenser can produce a higher initial cooling medium suction effect, but the connection between the crankshaft and the connecting rod If the surface roughness of the surface, the inner surface in contact with the cylinder body and ...

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Problems solved by technology

[0002] Refrigeration compressor is a kind of optional equipment in this refrigeration industry. It is driven by a motor. The compressor used in general small refrigeration equipment is relatively small. The working principle is that the motor drives the crankshaft to rotate, and the crankshaft drives the piston in the cylinder through the connecting rod. The reciprocating motion in the cylinder draws and compresses the steam medium from the atmospheric pressure intake valve and then sends it out to the condenser from the high pressure exhaust valve, so that the condenser can produce a higher initial cooling medium suction effect, but the connection between the crankshaft and the connecting rod If the surface roughness of the surface, the inner surface in contact with the cylinder body and the piston is not high enough, the friction coefficient is high, and frequent working friction will cause the above-mentioned connecting surface to be slightly deformed due to the alternation of cold and heat and internal stress changes, which will cause work. In line with aggravation, the increase in sliding friction temperature during work leads to large deformation, which greatly reduces the wear resistance of the compressor, directly affects the service life of the compressor, reduces the balance during work, and greatly reduces work efficiency and energy efficiency. Conventional cylinders The outside of the end cover is a flat surface. When the compressor is working, the piston reciprocates in the cylinder, which will generate fluid noise.

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