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Heat driven Stirling refrigerator

A refrigerator and heat-driven technology, applied in refrigerators, hot gas variable displacement engine devices, refrigeration and liquefaction, etc., can solve the problems of difficult design and processing, system vibration, unfavorable practical application, etc., to reduce design and processing Difficulty, vibration reduction effect

Active Publication Date: 2017-04-19
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

Similarly, one end of the ejector 4' of the refrigerator is at a low temperature, and the other end is located at the end of the second room temperature heat exchanger 1'. There is also a gap seal, and the design and processing are very difficult.
In addition, the discharge movement will also cause system vibration, which is not conducive to practical application.

Method used

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  • Heat driven Stirling refrigerator
  • Heat driven Stirling refrigerator
  • Heat driven Stirling refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 2 As shown, a thermally driven Stirling refrigerator provided by the present invention includes an engine, a refrigerator, an ejector, and a resonator. The engine includes a hot end heat exchanger 3, a first back The heat exchanger 2 and the first room temperature heat exchanger 1. The refrigerator includes a second room temperature heat exchanger 1', a second heat regenerator 2'and a cold end heat exchanger 3'which are connected from top to bottom in sequence, so The engine is provided with a first thermal buffer chamber 8, the refrigerator is provided with a second thermal buffer chamber 8', and the upper end of the first thermal buffer chamber 8 is connected to the hot end heat exchanger 3 , Its lower end is connected to the first room temperature heat exchanger 1 for transitioning the high temperature state of the hot end heat exchanger 3 to room temperature; the lower end of the second thermal buffer chamber 8'is connected to the cold end heat exchang...

Embodiment 2

[0035] Such as Figure 4 As shown, the difference between the second embodiment and the first embodiment is that the resonator 6 can be replaced by a linear motor, and the cavity 5 is provided with a linear motor outside the two first piston bodies 9 respectively. The linear motor includes a stator 12, a mover 13, and a piston 14. The stator 12 is fixedly connected to the inner wall of the cavity 5. The piston 14 is provided at an end of the mover 13 opposite to the first piston body 9. 13 is used to drive the piston 14 to reciprocate along the stator 12. The mover 13 and the piston 14 can be used as the resonator 6; the resonator 6 simultaneously acts on the magnetic field to output electric energy when moving, so In this embodiment, the system can simultaneously output electric energy and cold energy, which is of great practical value for occasions where electric power is lacking.

Embodiment 3

[0037] Such as image 3 As shown, the difference between the third embodiment and the first and second embodiments is that the opposite end of the first piston body 9 and the second piston body 10 or the piston 14 can be horizontally connected with a connecting rod 11, and the second piston body 10 or the piston 14 is provided with a central through hole passing through the connecting rod 11, and the connecting rod 11 passes through the central through hole. In this way, the areas of the first piston body 9 and the second piston body 10 or the two ends of the piston 14 are different. It helps to reduce the stiffness of the spring required to support the reciprocating movement of the second piston body 10 or the piston 14.

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PUM

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Abstract

The invention relates to the field of a refrigerator, and discloses a thermally-driven stirling cryocooler. The thermally-driven stirling cryocooler comprises an engine, a refrigerator, a discharger and a harmonic oscillator; the engine comprises a hot end heat exchanger, a first heat accumulator and a first room temperature heat exchanger which are sequentially connected; the refrigerator comprises a second room temperature heat exchanger, a second heat accumulator and a cold end heat exchanger which are sequentially arranged, wherein the engine is internally provided with a first thermal buffering cavity, the refrigerator is internally provided with a second thermal buffering cavity, the upper end of the first thermal buffering cavity is connected with the hot end heat exchanger, and the lower end of the first thermal buffering cavity is connected with the first room temperature heat exchanger; the lower end of the second thermal buffering cavity is connected with the cold end heat exchanger, and the upper end of the second thermal buffering cavity is connected with the second room temperature heat exchanger; the engine and the refrigerator are relatively arranged up and down, a shared cavity is formed between the engine and the refrigerator, and the discharger and the harmonic oscillator are both arranged in the cavity in a contraposition way. The discharger provided by the invention can be operated at the room temperature end, the design and processing difficulty of the discharger can be reduced, and the vibration of the system can be reduced.

Description

Technical field [0001] The invention relates to the technical field of refrigerators, in particular to a heat-driven Stirling refrigerator. Background technique [0002] Heat-driven cryogenic refrigerators have very good application prospects in the absence of electric energy. For example, although my country's natural gas reserves are very abundant, most of them belong to unconventional natural gas such as coalbed methane and shale gas. Usually the gas sources are scattered, the gas volume is small, and the location is remote. Traditional pipeline transportation or large-scale electric-driven liquefaction equipment Unusable, so the use of these natural gas has been greatly restricted. [0003] figure 1 It is a traditional heat-driven Stirling refrigerator structure, which mainly includes three parts: a Stirling engine, a Stirling refrigerator and a resonator. The resonator is located between the engine and the refrigerator. When the hot-end heat exchanger 3 of the engine is heate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/14F02G1/043
CPCF02G1/0435F25B9/14
Inventor 罗二仓胡剑英戴巍余国瑶吴张华张丽敏
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI