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Piston phase-adjusted pulse tube refrigerator connected with compression piston through spring

A technology of pulse tube refrigerator and spring connection, applied in refrigerators, compressors, gas cycle refrigerators, etc., can solve problems such as difficult control or adjustment, complex system, etc., and achieve improved refrigeration performance, small size, and increased regulation The effect of phase range

Active Publication Date: 2018-12-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned structure has the introduction of additional components of the pulse tube refrigerator, which makes the system more complicated, and the movement form of the moving mass module or the pushing piston is driven by gas compression and expansion, which is difficult to control or adjust

Method used

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  • Piston phase-adjusted pulse tube refrigerator connected with compression piston through spring
  • Piston phase-adjusted pulse tube refrigerator connected with compression piston through spring
  • Piston phase-adjusted pulse tube refrigerator connected with compression piston through spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 and 2 As shown, the piston-tuned coaxial pulse tube refrigerator connected by a spring to the piston of the compressor in this embodiment includes a compressor module 1, a regenerator hot-end heat exchanger 3, a regenerator 5, and a cold-end exchanger connected in sequence. Heater 7, pulse tube 6, heat exchanger 4 at the hot end of the pulse tube, and phase modulation module 2.

[0044] Wherein, the compressor module 1 includes a back pressure chamber 8 , a compressor piston 9 and a compression chamber 10 . The phasing module 2 includes an expansion chamber 11 , a phasing piston 12 , a sealing gap 13 and a spring 14 . The compression chamber 10 communicates with the heat exchanger 3 at the hot end of the regenerator, and the expansion chamber 11 communicates with the heat exchanger 4 at the hot end of the pulse tube. The spring 14 is located in the compression chamber 10 and connects the compressor piston 9 and the phase adjustment piston 12 .

[0045...

Embodiment 2

[0048] Such as image 3 As shown, in this embodiment, the piston phasing U-shaped pulse tube refrigerator is connected by a spring to the piston of the compressor. The regenerator 5 is arranged in parallel with the pulse tube 6 and communicated with the cold end heat exchanger 7. The expansion chamber 11 is connected to the pulse tube The hot end heat exchanger 4 communicates, and the compression chamber 10 communicates with the regenerator hot end heat exchanger 3 through a connecting pipe 15 . All the other structures are the same as in Example 1.

Embodiment 3

[0050] Such as Figure 4 As shown, in the piston-tuned coaxial pulse tube refrigerator in which the piston of the compressor is connected by springs in this embodiment, the regenerator 5 and the pulse tube 6 are coaxially arranged. The compressor module 1 contains two back pressure chambers 8 and two compressor pistons 9, which are arranged symmetrically. The phasing module 2 includes two phasing pistons 12 , which are respectively connected to the two compressor pistons 9 through springs 14 . The compression chamber 10 communicates with the heat exchanger 3 at the hot end of the regenerator, and the expansion chamber 11 communicates with the heat exchanger 4 at the hot end of the pulse tube through a connecting pipe 15 . All the other are identical with embodiment 1.

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Abstract

The invention discloses a piston phase-adjusted pulse tube refrigerator connected with a compression piston through a spring. The refrigerator comprises a compressor module, a pulse tube refrigerationmodule and a phase adjusting module; the compressor module comprises a back pressure cavity, the compressor piston and a compression cavity; the pulse tube refrigeration module comprises a regenerator hot end heat exchanger, a regenerator, a cold end heat exchanger, a pulse tube and a pulse tube hot end heat exchanger, all of which communicate with one another in sequence; the compression cavitycommunicates with the regenerator hot end heat exchanger; and the phase adjusting module comprises an expansion cavity with one part communicating with the compression cavity and the other part communicating with the pulse tube hot end heat exchanger, a phase adjusting piston mounted in the expansion cavity and provided with a sealing gap with the inner wall of the expansion cavity, and an elasticconnecting piece with two ends being connected with the compressor piston and the phase adjusting piston separately. Through movement and deformation of the elastic connecting piece and the phase adjusting piston, the recovery of internal expansion power of the pulse tube can be realized without additionally arranging a low-temperature motion part, so that the efficiency of the pulse tube refrigerator is improved, and the reliability and long life are guaranteed.

Description

technical field [0001] The invention relates to the technical field of cryogenic refrigerators, in particular to a piston phase-modulation pulse tube refrigerator connected by a spring to a piston of a compressor. Background technique [0002] With the development of modern science and technology, the demand for cryogenic technology continues to grow, especially in the fields of space technology, superconducting power, infrared detection, and medical instruments. Because of the advantages of simple and compact structure, low vibration, high reliability and long life, the pulse tube refrigerator has become the most promising and widely researched cryogenic refrigerator because of its cold end without moving parts. [0003] The research shows that the phase difference between the pressure wave and the working medium volume flow in the pulse tube refrigerator is very important to the refrigeration performance of the refrigerator. When the pressure wave near the middle of the r...

Claims

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Application Information

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IPC IPC(8): F25B9/14
CPCF25B9/145F25B2309/1411
Inventor 植晓琴黄宸邱利民
Owner ZHEJIANG UNIV
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