Air conditioner compressor end cover

Abstract

The invention discloses an air conditioner compressor back end cover. The air conditioner compressor back end cover comprises a circular end cover body, a discharge pipe and an air suction pipe. The inner side of the end cover body is provided with an inner annular groove and an outer annular groove which are coaxial and of special-shaped structures. The outer annular groove is uniformly provided with a plurality of protruding notches along the circumference. The inner annular groove is also provided with protruding notches of which the number is the same as the number of the protruding notches in the outer annular groove. The discharge pipe is arranged on the outer side of the end cover body and comprises a through hole penetrating through the end cover body and two branch pipes communicating with the through hole. The air suction pipe is also provided with a through hole penetrating through the end cover body. The through holes are both formed in the outer annular groove. According to the air conditioner compressor back end cover, supporting and deformation limiting of a valve slice are achieved, the air outlet mode of refrigerant gas is improved, and the production and installation processes are simplified.

Description

technical field [0001] The invention mainly relates to the technical field of automobile air-conditioning compressors. Background technique [0002] With the development of the automobile manufacturing industry, the research on automobile air conditioning technology is getting faster and faster. The automotive air-conditioning compressor is the core component. The automotive air-conditioning compressor usually uses a swash plate rotary piston for compression. The high-speed rotation of the swash plate can reach 3000 rpm, so the requirements for wear resistance are very high. At present, the swash plate in air-conditioning compressors usually adopts a split type, that is, the part in the middle of the swash plate that is driven by a motor to rotate is made of cast iron or stainless steel, while the ring shoulder on the outer circumference of the swash plate (friction with other parts due to high-speed rotation) is made of Copper alloy, and a chromium-molybdenum alloy layer i...

AI Technical Summary

Problems solved by technology

The cost of the swash plate in this way is very high, and the cost of the ring shoulder alone is tens of yuan, and because of the split structure, the strength is limited, and it is prone to wear deviation during operation, resulting in short life

At the same time, the rear end cover, which is an important part of the compressor, is closely related to the piston chamber and the valve assembly. The refrigerant in the piston chamber is controlled by the valve assembly to realize the flow of suction and exhaust. The valve generally passes through The multi-layer perforated shrapnel and the valve plate are stacked together. When the air is inhaled or discharged, the shrapnel is deformed by force to form a one-way through air passage. At this time, the deformation of the valve plate may be too large. Long-term use will cause damage, and it cannot be repaired The amount of suction and discharge is directly controlled so that flow limitation cannot be achieved, which affects the life of the compressor

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