Variable displacement swash plate compressor

Abstract

The invention relates to a variable displacement swash plate compressor. A swash plate driving mechanisms with a flexible driving balance design is provided, has proper flexibility during work, overcomes unbalanced force and moment acting on the swash plate, improves vibration, noise, kinematic pair blockage and excessive wear caused by the unbalanced force and moment, and reduces machining and assembly precision of related workpieces; a piston with a spiral linear oil groove is provided and stores oil, and through the reciprocation of the piston and the acceleration change of the piston, lubricating oil flows reasonably between the kinematic pair and is uniformly distributed on the cylindrical surface of the piston and the peripheral surface of the cylinder to improve the sealing and lubricating properties between the piston and the peripheral surface of the cylinder, improve the performance of the compressor and prolong the service life of the piston; and a cylinder cover capable of being formed at one time through die casting and having simple process is provided, and suction and discharge channels adopt a single-section or multi-section expansion chamber-type cavity consisting of alternate contraction sections and expansion sections to improve the vibration and air flow noise caused by suction and discharge pulsation.

Description

technical field [0001] The invention relates to a compressor, in particular to a variable displacement swash plate compressor. Background technique [0002] The drive plate of the current variable displacement swash plate compressor realizes rigid transmission to the swash plate through a slidable hinge mechanism. Due to the action of many unbalanced forces and moments, the swash plate produces small twists, swings and vibrations relative to the drive plate. Eccentricity, production vibration, noise and excessive wear of the kinematic pair, even stagnation, the use of flexible drive balance design is beneficial to improve the performance and life of the compressor, and reduce the processing accuracy of related components and simplify the installation process. [0003] The piston is an important moving part of the variable displacement swash plate compressor. The piston reciprocates in the cylinder for a long time. Its wear resistance, lubrication and sealing performance have...

AI Technical Summary

Problems solved by technology

[0004] Cylinder head and air passage are important functional components of variable displacement swash plate compressors, which not only constitute the suction and discharge chambers and passages of the compressor, but also have the function of vibration reduction and noise reduction; for the setting of pneumatic variable displacement The compressor cylinder head of the control valve also needs to have signals and adjustment channels for the suction pressure, exhaust pressure and crank chamber pressure connected to the control valve, so the structure is more complicated

For the cylinder head of the corresponding product represented by Denso 7SB series, a precision casting similar to a tee is embedded on the die-casting cylinder head, and its function is to introduce the airflow of the exhaust chamber into the exhaust passage of the cylinder block and the control valve. The exhaust pressure signal channel of the cylinder head needs to cast a cylindrical hole to embed the tee, which makes the structure and process complicated and increases the manufacturing cost

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