Cryogenic thermo-acoustic refrigerator without inertance tube or air reservoir

A refrigerator and low-temperature heating technology, which is applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problem of low power density and achieve the effect of high power density

Active Publication Date: 2014-09-17
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

[0006] The purpose of the present invention is to provide a low-temperature thermoacoustic refrigerator without an inertia tube and a gas stor...

Method used

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  • Cryogenic thermo-acoustic refrigerator without inertance tube or air reservoir
  • Cryogenic thermo-acoustic refrigerator without inertance tube or air reservoir
  • Cryogenic thermo-acoustic refrigerator without inertance tube or air reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Figure 4 It is a structural schematic diagram of Embodiment 1 of the low-temperature thermoacoustic refrigerator without inertia tube and gas store of the present invention, as Figure 4 As shown, the low-temperature thermoacoustic refrigerator without inertia tube and gas store of the present invention includes two refrigeration units composed of pressure wave generating device 1 and refrigerator components: the left refrigeration unit and the right refrigeration unit with the same structure unit; the refrigerator components of the left refrigeration unit and the right refrigeration unit include: regenerator hot-end heat exchanger 2, regenerator 3, cold-end heat exchanger 4, pulse tube 5, pulse tube hot-end heat exchanger device 6, small hole regulating valve 7 and two-way air intake regulating valve 8; said regenerator hot end heat exchanger 2, regenerator 3, cold end heat exchanger 4, pulse tube 5, pulse tube hot end heat exchange The device 6 and the small hole re...

Embodiment 2

[0031] Figure 5 It is a structural schematic diagram of embodiment 2 of the low-temperature thermoacoustic refrigerator without inertial tube and gas store of the present invention, as Figure 5 As shown, the main difference between it and Embodiment 1 is that: a bypass pipe is drawn between the regenerators of each refrigeration unit to connect to the pulse tube, and a bypass regulating valve 11 is set on the bypass pipe to adjust the heat from the regenerator. In this way, the phase adjustment capability of the small hole regulating valve 7 and the two-way inlet valve 8 can be increased to improve the efficiency of the low-temperature thermoacoustic refrigerator. The bypass is one or more.

[0032]Further, due to the loop formed by the two-way intake pipe where the two-way intake valve is located and the main gas circuit (or the loop formed by the bypass pipe between the regenerator and the pulse tube and the main gas circuit) may cause For circulation loss, a resistance ...

Embodiment 3

[0035] Image 6 It is a structural schematic diagram of Embodiment 3 of the low-temperature thermoacoustic refrigerator without inertia tube and gas store of the present invention, as Image 6 As shown, the main difference between it and Embodiment 1 is that the regenerators 3 of the left and right refrigeration units are composed of two cascaded upper sub-regenerators and lower sub-regenerators, (of course, the sub-regenerators The number is not limited to two, and more sub-regenerators can be set in series), and the sub-regenerators with multi-stage structure can achieve lower cooling temperatures, and can also obtain cooling capacity at different temperatures at the same time; Embodiment The joints of the upper and lower sub-regenerators of the two regenerators 3 are respectively connected to the second cold-end heat exchanger 4', the second pulse tube 5', and the second pulse tube hot-end heat exchanger through pipelines. 6' and the second small hole regulating valve 7', ...

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Abstract

The invention discloses a cryogenic thermo-acoustic refrigerator without an inertance tube or an air reservoir. The cryogenic thermo-acoustic refrigerator without the inertance tube or the air reservoir comprises refrigeration units which respectively consist of a pressure wave generating device and a refrigerator component; the number of the refrigeration units is an even number or three; each refrigerator component comprises a heat regenerator hot-end heat exchanger, a heat regenerator, a cold-end heat exchanger, a pulse tube, a pulse tube hot-end heat exchanger, a small hole regulating valve and a two-way intake regulating value, wherein the heat regenerator hot-end heat exchanger, the heat regenerator, the cold-end heat exchanger, the pulse tube, the pulse tube hot-end heat exchanger and the small hole regulating valve are connected with the output end of the pressure wave generating device of each refrigeration unit in sequence, and the two-way intake regulating value is arranged on a two-way intake tube connected between the output end of the pressure wave generating device of each refrigeration unit and the outlet end of the corresponding pulse tube hot-end heat exchanger; the small hole regulating valves of all the refrigeration units are connected through connecting tubes; when the refrigerator works, by controlling the phase of each pressure wave generating device to generate pressure waves, the sum of volume flow rates of the joints of all the small hole regulating valves is close to zero so as to enable the flow losses of the pressure waves in the heat regenerators to reach a minimum. As the refrigerator is not provided with the air reservoir or the inertance tube, the refrigerator has the advantages of being compact in structure and high in power density.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a low-temperature thermoacoustic refrigerator with a compact structure without an inertia tube and a gas store. Background technique [0002] A refrigerator is a device that transfers heat from a cooled object to another medium to cool the object to be cooled. Among them, a low-temperature thermoacoustic refrigerator is an important low-temperature refrigeration device. [0003] figure 1 and figure 2 It is a structural schematic diagram of a low-temperature thermoacoustic refrigerator in the prior art. like figure 1 and 2 As shown, the existing low-temperature thermoacoustic refrigerator includes a pressure wave generating device 1 and a refrigeration component; 3. Cold end heat exchanger 4, pulse tube 5, pulse tube hot end heat exchanger 6; when the low-temperature thermoacoustic refrigerator is working, the pressure wave generator 1 generates pressure fluctuations, ...

Claims

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Application Information

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IPC IPC(8): F25B23/00
Inventor 张丽敏罗二仓胡剑英戴巍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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