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Thermoacoustic device

A thermoacoustic and diaphragm technology, which is used in hot gas variable capacity engine devices, heat pumps, lighting and heating equipment, etc., can solve problems such as changes in working gas filling pressure, and achieve the effect of improving work efficiency.

Pending Publication Date: 2020-11-10
JTEKT CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the filling pressure of

Method used

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  • Thermoacoustic device
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Examples

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Embodiment Construction

[0019] figure 1 is a configuration diagram schematically showing an example of the thermoacoustic device 10 . The thermoacoustic device 10 of the present disclosure includes a collar 11 , and a first stack 20 and a second stack 30 each disposed in the collar 11 . The working gas is sealed in the collar 11 . The working gas is, for example, air, nitrogen, helium, argon or a mixture of at least two of them.

[0020] The first stack 20 is a columnar member, and has a plurality of micro flow paths 21 extending through the collar 11 in the axial direction of the collar 11 . The second stack 30 is also a columnar member, and has a plurality of micro flow paths 31 extending through the collar 11 in the axial direction of the collar 11 . The micro flow paths 21, 31 serve as passages for the working gas.

[0021] In the axial direction, a temperature gradient occurs between the first end 22 and the second end 23 of the first stack 20 . In the present disclosure, the temperature at...

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Abstract

A thermoacoustic device includes a loop tube (11) in which a working gas is sealed; a stack in which a temperature gradient is generated in a tube axis direction of the loop tube (11), the stack beingprovided in the loop tube (11); and a diaphragm structure (40) including a diaphragm (39) provided in the loop tube (11) and an operating unit, the diaphragm (39) having a surface (39a) extending ina direction intersecting the tube axis direction and being configured to vibrate with a component of vibration in the tube axis direction, and the operation unit (41) being configured to apply a physical quantity that is required, to the diaphragm (39) to change a rigidity of the diaphragm (39) in the tube axis direction.

Description

technical field [0001] The present invention relates to thermoacoustic devices. Background technique [0002] There is a thermoacoustic device that uses the thermoacoustic effect, which is a phenomenon of conversion between heat energy and sound energy (for example, see Japanese Unexamined Patent Application Publication No. 2018-66501 (JP 2018-66501 A)). The thermoacoustic device comprises an annulus, in which the working gas is sealed, and a stack, in which the stack (regenerator) is arranged. When a temperature gradient occurs in the stack, self-excited acoustic waves are generated. The energy of sound waves is used for various tasks. [0003] The thermoacoustic device disclosed in JP 2018-66501A includes a diaphragm disposed in a ring pipe. The sound waves in the ring can be amplified by placing the diaphragm at an appropriate location. That is, the diaphragm can affect the pressure vibration of the working gas, and can improve the working efficiency achieved by the t...

Claims

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Application Information

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IPC IPC(8): F03G7/08H02N2/00H02N2/18F25B30/06
CPCF03G7/08H02N2/002H02N2/186F25B30/06F25B9/145F25B2309/1403F25B2309/1427H04R23/00F02G1/00F02G2243/54F03G3/00F25B2309/1402F25B2309/1405F25B2309/1409
Inventor 河内达磨武井智行小原邦男田中裕贵石川修六
Owner JTEKT CORP
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