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Thermoacoustic device and electronic device

A technology of thermal sound generation and electronic devices, which is applied to electrical components, sensors, sensor parts, etc., can solve the problems of low sound generation efficiency, and achieve the effects of simple structure, cost reduction, and low heat capacity

Active Publication Date: 2012-10-10
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of the material itself, when the platinum sheet is used as the thermoacoustic device of the thermoacoustic element, the maximum sounding frequency can only reach 4 kHz, and the sounding efficiency is low

Method used

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  • Thermoacoustic device and electronic device
  • Thermoacoustic device and electronic device
  • Thermoacoustic device and electronic device

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Experimental program
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Embodiment Construction

[0032] The thermoacoustic device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following embodiments, the same components are denoted by the same reference numerals. The schematic diagrams involved in the embodiments of the present invention are for better description of the embodiments, and have no limiting effect on the embodiments themselves.

[0033] see figure 1 and figure 2 , The first embodiment of the present invention provides a thermoacoustic device 10 , the thermoacoustic device 10 includes a thermoacoustic element 102 and a heating device 104 .

[0034] The heating device 104 is used to provide energy to the thermoacoustic element 102 to make the thermoacoustic element 102 generate heat and emit sound. In this embodiment, the heating device 104 provides electric energy to the thermoacoustic element, so that the thermoacoustic element 102 generates heat under the action ...

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Abstract

A thermoacoustic device comprises a substrate, and the thermoacoustic device further comprises at least one thermogenic device and a plurality of thermoacoustic elements, wherein the plurality of thermoacoustic elements are separately arranged on the substrate, the thermogenic device is used for providing energy to the thermoacoustic elements to make the thermoacoustic elements generate heat, and at least one of the plurality of thermoacoustic elements comprises a graphene film. The invention further provides an electronic device using the thermoacoustic device.

Description

technical field [0001] The invention relates to a thermoacoustic device, in particular to a graphene-based thermoacoustic device and an electronic device using the thermoacoustic device. Background technique [0002] The thermoacoustic device generally consists of a signal input device and a sound-generating element, and a signal is input to the sound-generating element through the signal input device to emit sound. The thermoacoustic device is a kind of sound-generating device, which is based on the thermoacoustic effect, please refer to the literature "The Thermophone", EDWARD C. WENTE, Vol.XIX, No.4, p333-345 and "On Some Thermal Effects of Electric Currents", William Henry Preece, Proceedings of the Royal Society of London, Vol.30, p408-411 (1879-1881). It discloses a thermoacoustic device, and the thermoacoustic device realizes sound generation by feeding an alternating current into a conductor. The conductor has a small heat capacity (Heat capacity), thin thickness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R23/00
Inventor 姜开利林晓阳肖林范守善
Owner TSINGHUA UNIV
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