Thermal coupling multilevel pulsatron refrigerating machine

A pulse tube refrigerator and thermal coupling technology, applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of increasing heat conduction loss, low refrigeration temperature, pressure amplitude loss, etc., and reduce pressure loss and heat conduction loss. , low cooling temperature, the effect of improving efficiency

Inactive Publication Date: 2008-10-29
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

[0003] There are two disadvantages in such a structure: First, the inlet section of the regenerator of the low-temperature pulse tube refrigerator is the part between the inlet of the refrigerator and the heat bridge. After this period, a large pressure amplitude loss will

Method used

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  • Thermal coupling multilevel pulsatron refrigerating machine
  • Thermal coupling multilevel pulsatron refrigerating machine
  • Thermal coupling multilevel pulsatron refrigerating machine

Examples

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Embodiment 1

[0017] Example 1: figure 2 It is a structural schematic diagram of a thermally coupled multi-stage pulse tube refrigerator (two-stage thermally coupled pulse tube refrigerator) of the present invention. It can be seen from the figure that the precooling pulse tube refrigerator A has a single-stage structure, and the low-temperature pulse tube refrigerator B’s low-temperature pulse tube refrigerator regenerator 1 and the low-temperature pulse tube refrigerator room temperature heat exchanger 3 are connected with a low-temperature pulse tube Refrigerator thermal buffer tube 2; the precooling pulse tube refrigerator cold head 10 of the precooling pulse tube refrigerator A passes through a thermal bridge 9 and the low temperature pulse tube refrigerator regenerator 1 close to the low temperature pulse tube refrigerator thermal buffer One end of the tube 2 is connected; the low-temperature pulse tube refrigerator phase modulation component 8 of the low-temperature pulse tube refri...

Embodiment 2

[0019] Example 2: image 3 It is a structural schematic diagram of a thermally coupled multi-stage pulse tube refrigerator (three-stage thermally coupled pulse tube refrigerator) of the present invention. Depend on image 3 It can be seen that it is mainly composed of a pre-cooling pulse tube refrigerator A and the first and second two low-temperature pulse tube refrigerators B and B'; the pre-cooling pulse tube refrigerator A is a single-stage structure, and the low-temperature pulse tube refrigerator B The heat buffer 2 of the low-temperature pulse tube refrigerator is connected between the regenerator 1 of the low-temperature pulse tube refrigerator and the room temperature heat exchanger 3 of the low-temperature pulse tube refrigerator, and the second low-temperature pulse tube refrigeration unit of the second low-temperature pulse tube refrigerator B' The thermal buffer pipe 2' of the second low temperature pulse tube refrigerator is connected between the regenerator 1' ...

Embodiment 3

[0021] Example 3: Figure 4 It is a structural schematic diagram of a thermally coupled multi-stage pulse tube refrigerator (four-stage thermally coupled pulse tube refrigerator) of the present invention. Depend on Figure 4 It can be seen that it is mainly composed of a precooling pulse tube refrigerator A and a low temperature pulse tube refrigerator B. , the pre-cooling pulse tube refrigerator A is a three-stage gas-coupled pulse tube refrigerator, and the low-temperature pulse tube refrigerator B’s low-temperature pulse tube refrigerator regenerator 1 and the low-temperature pulse tube refrigerator room temperature heat exchanger 3 are connected with a low-temperature Pulse tube refrigerator heat buffer 2; the precooling pulse tube refrigerator cold head 10 of precooling pulse tube refrigerator A passes through a thermal bridge 9 and the low temperature pulse tube refrigerator regenerator 1 close to the heat of the low temperature pulse tube refrigerator One end of the b...

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Abstract

The invention relates to a thermal-coupling multiple-pulse tube refrigerator which comprises a pre-cooling pulse tube refrigerator and a low-temperature pulse tube refrigerator, and is characterized in that the thermal-coupling multiple-pulse tube refrigerator also comprises a low-temperature pulse tube refrigerator thermal buffer tube connected between a low-temperature pulse tube refrigerator regenerator and a low-temperature pulse tube refrigerator room-temperature heat exchanger of the low-temperature pulse tube refrigerator; a pre-cooling pulse tube refrigerator cold head of the pre-cooling pulse tube refrigerator is connected with one end of the low-temperature pulse tube refrigerator regenerator close to the low-temperature pulse tube refrigerator thermal buffer tube via a heat bridge. Compared with prior art, the key of the thermal-coupling multiple-pulse tube refrigerator is that the room-temperature heat exchanger and the regenerator of the low-temperature pulse tube refrigerator are connected by the thermal buffer tube so that the total length of the regenerator is reduced; thereby reducing pressure loss and heat conduction loss in the regenerator, improving the refrigerator efficiency and achieving lower refrigerating temperature.

Description

field of invention [0001] The invention mainly relates to the field of refrigeration and low temperature, in particular to a heat buffer tube installed at the inlet of the regenerator of the low-temperature pulse tube refrigerator in a thermally coupled pulse tube refrigerator, thereby reducing the pressure drop loss and heat conduction loss of the regenerator Methods. Background technique [0002] Pulse tube refrigerators can be divided into gas-coupled and thermal-coupled types according to their coupling methods. A typical structure of a thermally coupled pulse tube refrigerator is as follows: figure 1 As shown, it is mainly composed of two parts: a pre-cooling pulse tube refrigerator and a low-temperature pulse tube refrigerator. The heater is pre-cooled. In this way, the working airflow entering the low-temperature pulse tube refrigerator is pre-cooled to a certain temperature, and then a lower cooling temperature is generated in the cold head. [0003] There are tw...

Claims

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Application Information

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IPC IPC(8): F25B9/14
CPCF25B9/145F25B9/10
Inventor 罗二仓胡剑英戴巍吴剑峰
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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