A piston positioning structure of a Stirling cycle machine

Abstract

The invention provides a piston positioning structure of a Stirling cycle machine. The Stirling cycle machine includes a closed cavity and a piston. The piston is arranged in the closed cavity and can reciprocate along the closed cavity. , a number of through holes are provided between the end surface of one end of the piston and the side surface matched with the inner wall of the airtight cavity, and a number of pressure relief holes matched with the inner wall of the airtight cavity are provided on the inner wall of the airtight cavity. hole. The technical scheme of the present invention realizes the precise positioning of the piston movement position by using the original structure and power without increasing components and energy sources through the through holes and pressure relief holes that cooperate with each other, and the modification is convenient and easy to realize. The control difficulty is reduced, and the running precision of the Stirling cycle machine is improved.

Description

technical field [0001] The invention belongs to the field of mechanical equipment control, and relates to a positioning structure, in particular to a piston positioning structure of a Stirling cycle machine. Background technique [0002] Different from traditional cycle theory, Stirling cycle theory is a more efficient thermodynamic theory. With the continuous development of new materials and new technologies and the increasing shortage of petroleum resources, Stirling cycle machines have been paid more and more attention by those skilled in the art. [0003] However, in the mechanical structure of the existing Stirling cycle machine, the piston is driven to reciprocate by the gas pressure in the cavity and the elastic force of the spring or the magnetic force of the magnet. When the gas pressure is too high or too low, it is easy to cause the instability of the piston movement, and it is difficult to form effective control at the same time. However, due to the small size ...

AI Technical Summary

Problems solved by technology

When the gas pressure is too high or too low, it is easy to cause the instability of the piston movement, and it is difficult to form an effective control

However, due to the small volume of the piston and the cavity and the large number of movements, adding a complex positioning control device is costly and difficult to implement effectively.

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