Thermoacoustic apparatus
US7603866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Jun 24, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2309/1416
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In order to reduce the time until an acoustic wave is generated and perform heat exchange smoothly in a stack, a thermoacoustic apparatus 1 includes a first stack 3a sandwiched between a first high-temperature-side heat exchanger 4 and a first low-temperature-side heat exchanger 5 and a second stack 3b sandwiched between a second high-temperature-side heat exchanger 6 and a second low-temperature-side heat exchanger 7 in the inside of a loop tube 2, wherein a standing wave and a traveling wave are generated through self excitation by heating the first high-temperature-side heat exchanger 4, the second low-temperature-side heat exchanger 7 is cooled by the standing wave and the traveling wave, or/and a standing wave and a traveling wave are generated by cooling the first low-temperature-side heat exchanger 5, and the second high-temperature-side heat exchanger 6 is heated by the standing wave and the traveling wave. The standing wave and the traveling wave are generated in the state in which helium having a high sound velocity, a small Prandtl number, and a small specific gravity is enclosed in the loop tube and, thereafter, argon having a low sound velocity, a large Prandtl number,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.