Thermoacoustic device with diaphragm structure
US11320176B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 28, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Apr 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R23/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A thermoacoustic device includes a loop tube 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, the stack being provided in the loop tube; and a diaphragm structure including a diaphragm provided in the loop tube and an operation unit, the diaphragm having a surface extending in a 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 being configured to apply a physical quantity that is required, to the diaphragm to change a rigidity of the diaphragm in the tube axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.