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Direct-current drive and active temperature control system of two-stage high-frequency pulse tube refrigerator and design method thereof

A technology of pulse tube refrigerator and pulse tube refrigerator, which is applied in the fields of refrigeration and cryogenic engineering and physical electronics, can solve the problems of sensitive and cumbersome driving and control tasks, and achieve the goal of improving energy utilization efficiency and refrigeration stability Effect

Inactive Publication Date: 2015-04-22
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the single-stage pulse tube refrigerator system, the two-stage pulse tube refrigerator system has to drive and control the two-stage pulse tube cold fingers, and the driving and control tasks become more sensitive and cumbersome

Method used

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  • Direct-current drive and active temperature control system of two-stage high-frequency pulse tube refrigerator and design method thereof
  • Direct-current drive and active temperature control system of two-stage high-frequency pulse tube refrigerator and design method thereof
  • Direct-current drive and active temperature control system of two-stage high-frequency pulse tube refrigerator and design method thereof

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the specific embodiment of the present invention is described in further detail:

[0030] figure 1 It is a schematic diagram of the invented two-stage high-frequency pulse tube refrigerator DC drive and active temperature control system; figure 2 It is a schematic diagram of the dual-channel temperature signal acquisition and operational amplifier module; image 3 It is a schematic diagram of the connection of the H-bridge power amplifier module.

[0031] The invented two-stage high-frequency pulse tube refrigerator DC drive and active temperature control system includes DC-DC conversion module 1, DC-DC conversion module 2 3, dual-channel analog-to-digital signal conversion module 4, and trade-off control between the two stages Module 5, PID control module 6, SPWM signal modulation module 7, dual-channel digital-analog signal conversion module 8, dual-channel temperature signal acquisition and operational ...

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Abstract

The invention discloses a direct-current drive and active temperature control system of a two-stage high-frequency pulse tube refrigerator and a design method of the two-stage high-frequency pulse tube refrigerator. The system is composed of a first DC (direct current)-DC conversion module, a second DC-DC conversion module, a dual-channel analogue-digital signal conversion module, a two-stage weighing control module, a PID (Proportion Integration Differentiation) control module, a SPWM (Sinusoidal Pulse Width Modulation) signal modulating module, a dual-channel digital-analogue signal conversion module, a dual-channel temperature signal collecting and operation amplifying module and an H bridge power amplifying module. Cold end temperature in each stage of the two-stage refrigerator is collected and converted into appropriate voltage signals, control signals are output by treating a series of signals so that the two-stage pulse tube refrigerator can be efficiently driven by a direct current power supply, and the cold end temperature in each stage of the two-stage refrigerator is actively controlled. The two-stage high-frequency pulse tube refrigerator has a very positive connotation when being applied to spaceflight and other special fields.

Description

technical field [0001] The invention relates to the field of refrigeration and cryogenic engineering and the field of physical electronics, in particular to a DC drive and active temperature control system and design method of a two-stage pulse tube refrigerator. Background technique [0002] The pulse tube refrigerator is a major innovation of the regenerative cryogenic refrigerator. It cancels the cold end ejector widely used in the conventional regenerative cryogenic refrigerator (such as Stirling and G-M refrigerators), and realizes the cold Low vibration, low interference and no wear at the end; and after structural optimization and important improvements in phase adjustment methods, its actual efficiency has reached the highest value of regenerative cryogenic refrigerators in typical temperature ranges. These remarkable advantages make the pulse tube refrigerator a hot spot in the research of cryogenic refrigerators in the past 30 years, and have been widely used in ae...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14F25B49/02
CPCF25B9/145F25B49/02F25B2309/1411F25B2309/1427
Inventor 党海政谭军
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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