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Electrically driven thermoacoustic refrigerator based on moving standing wave orthogonal superposition sound field

A thermoacoustic refrigerator, thermoacoustic refrigeration technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc. and other problems, to achieve high-efficiency thermoacoustic conversion and achieve the effect of thermoacoustic conversion

Inactive Publication Date: 2011-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2009, Kang Huifang conducted research on the distribution characteristics of the sound field in the thermoacoustic system, and pointed out that a high-impedance traveling-wave phase region can be achieved in a standing-wave-like sound field. However, too few traveling-wave components will make the traveling-wave phase region very narrow and high The efficiency zone is too narrow to meet the length requirements of the thermoacoustic core element section
In a one-dimensional sound field, the length of the traveling wave region can be increased by increasing the traveling wave component. However, with the increase of the traveling wave component, although the length of the traveling wave phase region increases, the local acoustic impedance in the traveling wave phase region decreases. Reduced conversion efficiency
The mutually restrictive relationship between the length of the traveling wave region and the impedance limits the development of thermoacoustic refrigeration systems

Method used

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  • Electrically driven thermoacoustic refrigerator based on moving standing wave orthogonal superposition sound field
  • Electrically driven thermoacoustic refrigerator based on moving standing wave orthogonal superposition sound field
  • Electrically driven thermoacoustic refrigerator based on moving standing wave orthogonal superposition sound field

Examples

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Embodiment 1

[0016] The structure of this embodiment is as figure 1 As shown, it includes: a first acoustic wave conditioner 1, a traveling wave channel 2, two standing wave tubes 3, two room temperature end coolers 4, two thermoacoustic regenerators 5, two cold heads 6, the first Two sonic conditioners7. The first acoustic wave conditioner 1 and the second acoustic wave conditioner 7 are respectively arranged at the two ends of the traveling wave channel 2, and the following lines are modulated in the traveling wave channel by adjusting the first acoustic wave conditioner 1 and the second acoustic wave conditioner 7. A sound field dominated by wave components; each standing wave tube 3 vertically intersects with the traveling wave channel 2, and a thermoacoustic refrigeration unit composed of a room temperature end cooler 2, a thermoacoustic regenerator 3 and a cold head 4 is placed at the intersection a.

[0017] The standing wave component provided by the standing wave tube 3 and the ...

Embodiment 2

[0024] The structure of this embodiment is as figure 2 As shown, it includes: a first acoustic wave conditioner 1, a traveling wave channel 2, a standing wave tube 3, a room temperature end cooler 4, a thermoacoustic regenerator 5, a cold head 6, and a second acoustic wave conditioner 7. The third sound wave conditioner 8 and the fourth sound wave conditioner 9. By adjusting the first acoustic wave conditioner 1 and the second acoustic wave conditioner 7, the sound field based on the traveling wave component is modulated in the traveling wave channel; by adjusting the third acoustic wave conditioner 8 and the fourth acoustic wave conditioner 9 in the standing wave A sound field mainly composed of standing waves is modulated in the tube; the standing wave tube 3 intersects the traveling wave channel 2 perpendicularly, and a thermal chamber composed of a room temperature end cooler 2, a thermoacoustic regenerator 3 and a cold head 4 is placed at the intersection. Acoustic cool...

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Abstract

The invention relates to an electrically driven thermoacoustic refrigerator based on a moving standing wave orthogonal superposition sound field, comprising a first sound wave regulator (1), a second sound wave regulator (7), a traveling wave channel (2) and one or more standing wave tubes (3), wherein the standing wave tubes (3) are vertically intersected with the traveling wave channel (2), and a thermoacoustic refrigeration unit (A) formed by connecting a room temperature end cooler (4), a thermoacoustic regenerator (5) and a cold finger (6) in sequence is placed in the intersected position. A standing wave component provided by the standing wave tubes (3) and a traveling wave component provided by the traveling wave channel (2) are in orthogonal superposition in the thermoacoustic refrigeration unit (A); the thermoacoustic refrigeration unit (A) is positioned near the middle pressure amplitude of the standing wave tubes (3) to effectively utilize the high impedance characteristic of the standing wave component and the traveling wave phase characteristic of the traveling wave component so that the thermoacoustic refrigeration unit (A) of each stage can work in a high-impedance traveling wave phase area; and high-efficient thermoacoustic transfer is realized.

Description

technical field [0001] The invention relates to a refrigerator device, in particular to a thermoacoustic refrigerator device utilizing the characteristics of a traveling standing wave orthogonally superimposed sound field. Background technique [0002] Thermoacoustic refrigerators use the thermoacoustic effect to pump heat from the low temperature end to the high temperature end using sound waves. According to the different characteristics of the working sound field, thermoacoustic heat engines are mainly divided into three types: standing wave type, traveling wave type and traveling standing wave hybrid type. Because the phase difference between the velocity wave and the pressure wave in the standing wave sound field is The standing wave sound field theoretically has no acoustic work output; on the other hand, the thermoacoustic conversion in the standing wave thermoacoustic heat engine is based on the irreversible thermal contact between the gas and the solid, and the ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B23/00
Inventor 康慧芳郑宏飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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