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Spatial radiation-cooled free-piston Stirling engine

A technology of Stirling engine and space radiation, which is applied in the direction of machine/engine, thermal variable capacity engine device, mechanical equipment, etc.

Inactive Publication Date: 2014-07-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is mainly to propose a method that can overcome the problems brought by the water-cooled shell-and-tube cooling system of the traditional free-piston Stirling engine and adopt heat pipe heat conduction, radiation screen The way to radiate heat to space

Method used

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  • Spatial radiation-cooled free-piston Stirling engine

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Embodiment Construction

[0012] Combine below figure 1 Further illustrate the structure of the novel free-piston Stirling engine of the present invention. The gas distributing piston cylinder includes an outer cylinder 1 and an inner cylinder 16, and the interlayer between the outer cylinder 1 and the inner cylinder 16 is composed of a heating chamber 2, a reheating chamber 4 and a cooling chamber 17 from top to bottom; the distributing piston 14 Sealed and installed in the inner cylinder 16, the top of the inner cylinder 16 is an open structure; the space between the top of the gas distribution piston 14 and the outer cylinder 1 is the heating chamber 2. The piston rod 8 of the gas distribution piston 14 passes through the power piston rod 12 and is connected with the leaf spring 23 . The leaf spring 23 is mounted on the generator casing 22 .

[0013] The generator assembly includes a generator housing 22, a power piston rod 12, a linear generator rotor magnet 21, and a linear generator stator coi...

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Abstract

A spatial radiation-cooled free-piston Stirling engine belongs to the field of Stirling engine utilization. A heater (3) and a heat regenerator (15) are respectively mounted in a heating chamber (2) and a heat regeneration chamber (4) of a displacer piston cylinder. The heater (3) is integrally foamed porous material as a turbulator for intensifying the heat exchange between the air and an outer cylinder (1), and the heat regenerator (15) is made of integrally foamed porous material; circular heat tubes (5) are mounted in a cooling chamber (17), wherein the part of the cooling chamber, in which the circular heat tubes (5) are mounted, is an evaporation section, the middle part is a thermal leakage current section, and the part which stretches out of the outer cylinder (1) is a heat dissipation section or a condensation section; a radiation shield (6) is mounted on the circular heat tubes (5) and the heat dissipation section to carry out radiative cooling; the radiation shield (6) is of a rib plate structure. Because the spatial radiation-cooled free-piston Stirling engine uses the integrally foamed porous material to intensify heat exchange in the heating chamber, the heating capability is enhanced; because the heat tubes are utilized to carry out radiative cooling, the difficulty of spatial water cooling is decreased.

Description

Technical field [0001] The invention relates to a free-piston Stirling engine which is cooled by space radiation and has an integral foamed porous material as a heater, and belongs to the field of heat engine utilization. Background technique [0002] The Stirling Engine is an externally heated closed-cycle piston engine. In this type of machine, the working medium (generally hydrogen, helium or air) is enclosed in the circulation loop, and the flow direction of the working medium in the closed circulation loop is controlled by the variable ratio of the cylinder volume; at lower temperatures and The working fluid is compressed under pressure and expanded under higher temperature and pressure to obtain positive cycle work. Its thermodynamic process is carried out according to the Stirling cycle. [0003] The free-piston Stirling engine is an important branch of the Stirling engine, and it is a power device that realizes a thermodynamic cycle by the reciprocating motion of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G1/057F02G1/055
Inventor 黄护林霍英杰亓宗磊
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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