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The core function of the back cover of the air conditioning compressor
Nov 25,2025
sealing function
Seal the high-pressure chamber inside the compressor to prevent refrigerant leakage. If the back cover is aged or damaged, it can lead to a decrease in refrigeration efficiency, abnormal noise, and even the overall failure of the compressor. For example, in logistics transport trucks, the continuous high load operation of air conditioning directly affects driving comfort and maintenance costs due to the sealing of the rear cover.
Support and fixation
Support the stable operation of the internal rotor and bearings, while connecting transmission components (such as pulleys) and fixing the internal structure of the compressor. Its design needs to withstand the pressure difference and vibration generated during the compression process to ensure long-term operational stability.
Heat dissipation and durability
Part of the back cover is made of aluminum alloy material, which is lightweight and has excellent heat dissipation performance, and can reduce the temperature during continuous operation. For example, a back cover that is compatible with the Jiangling, Qingling, and Isuzu series has good temperature control after continuous long-distance driving and has not experienced overheating.
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Application scenarios of compressor front cover
Automotive air conditioning compressor: In automotive air conditioning systems, the front cover of the compressor needs to be lightweight, corrosion-resistant, and have good heat dissipation performance to adapt to the narrow space and harsh environment inside the car.
Structure type of compressor front cover
Integral front cover: It is cast or machined as a whole with the compressor cylinder or shell, with a compact structure, suitable for small compressors. This structure helps reduce the number of parts and improve assembly efficiency.
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