Free piston and air cylinder assembly and Stirling engine

A Stirling engine, piston cylinder technology, applied in the direction of hot gas variable displacement engine devices, machines/engines, mechanical equipment, etc., can solve the problems of gap seal damage, wall wear and sticking, etc., to reduce deformation and reduce component wear , the effect of reducing the possibility of stuck

Active Publication Date: 2021-03-30
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a free piston and cylinder assembly and a Stirling engine to solve the gap caused by the cylinder deformation of the existing free piston engine Seal damage, wall wear and sticking problems, in order to improve equipment performance and life

Method used

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  • Free piston and air cylinder assembly and Stirling engine
  • Free piston and air cylinder assembly and Stirling engine
  • Free piston and air cylinder assembly and Stirling engine

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified and limited, the terms "first" and "second" are for the purpose of clearly illustrating the numbering of product components, and do not represent any substantial difference. The directions of "up", "down", "left" and "rig...

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Abstract

The invention relates to the technical field of free piston type engines, and discloses a free piston and air cylinder assembly and a Stirling engine. The free piston and air cylinder assembly comprises a piston and a piston air cylinder, gap sealing is formed between the outer wall face of the piston and the inner wall face of the piston air cylinder so that an inner cavity of the engine can be divided into a compression cavity and a back cavity, the free piston and air cylinder assembly further comprises an air cylinder jacket, the air cylinder jacket is arranged on the outer side of the piston air cylinder in a sleeving mode, a first cavity is formed in the air cylinder jacket in the circumferential direction of the piston air cylinder, and the first cavity is communicated with the backcavity through at least one first throttling hole. According to the free piston and air cylinder assembly, by means of the structure of the first cavity and the first throttling hole, fluctuation pressure of the back cavity is separated, deformation of an air cylinder wall is reduced, part abrasion caused by deformation is reduced, and meanwhile, the possibility of jamming is greatly reduced, theperformance of the device is improved, and the service life of the device is prolonged.

Description

technical field [0001] The invention relates to the technical field of free piston engines, in particular to a free piston and cylinder assembly and a Stirling engine. Background technique [0002] Stirling engine, also known as heat engine, is an external combustion, closed cycle, reciprocating piston energy conversion device. The Stirling engine works according to the Stirling cycle, which includes two isothermal processes and two isovolumic processes, and has the same thermal efficiency as the Carnot cycle. The Stirling heat engine has many advantages such as low emission rate of pollutants, high efficiency, low noise, good operation characteristics, reliable operation, and wide adaptability to energy sources. It is widely used in ships, automobiles, aerospace and other fields. There is an increasing demand for high-power Stirling engines. [0003] The interior of the high-power free-piston Stirling engine is a high-pressure environment. In the process of increasing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G1/043F02G1/053
CPCF02G1/0435F02G1/053
Inventor 胡剑英贾子龙赵兴林陈燕燕张丽敏罗二仓
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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