Thermoacoustic device

A technology of thermally induced sound and thermally induced sound element, which is applied in the direction of sensors, electrical components, sensor parts, etc., can solve the problems of small contact area and reduce the sounding effect of the thermally induced sounding device 60, etc., so as to increase the contact area and improve the sound production. effect of effect

Active Publication Date: 2010-07-21
BEIJING FUNATE INNOVATION TECH
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Problems solved by technology

[0005] However, since the carbon nanotube film 606 is directly attached to the substrate 602, the contact area between the carbon nanotube film 606 and the surrounding medium is small, and most of the heat generated by the carbon nanotube film 606 for sound generation is absorbed by the substrate 602. absorbed, thereby reducing the sound effect of the thermoacoustic device 60

Method used

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Embodiment Construction

[0021] The thermoacoustic device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] see figure 2 and image 3 , the first embodiment of the present invention provides a thermoacoustic device 10, the thermoacoustic device 10 includes a substrate 102, a first electrode 104, a second electrode 108, a spacing element 118 and a thermoacoustic element 106 .

[0023] The second electrodes 108 are arranged at a certain distance from the first electrodes 104 . The spacing element 118 is disposed on the substrate 102 between the first electrode 104 and the second electrode 108 . The thermoacoustic element 106 is disposed on the first electrode 104 , the second electrode 108 and the spacing element 118 , and is electrically connected to the first electrode 104 and the second electrode 108 . The thermoacoustic element 106 has a first surface 1062 opposite to the base 102 and a second surface 106...

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Abstract

The invention relates to a thermoacoustic device, which comprises a substrate, a first electrode, a second electrode, a thermoacoustic element and a spacing element, wherein the thermoacoustic element is electrically connected with the first and second electrodes and is provided with a first surface facing the substrate and a second surface opposite to the first surface; and the spacing element is arranged on the substrate and contacts a part of the thermoacoustic element between the first and second electrodes so that a space is formed between the part of the thermoacoustic element and the substrate.

Description

technical field [0001] The invention relates to a thermoacoustic device. Background technique [0002] The sounding device is generally composed of a signal input device and a sounding element, and a signal is input to the sounding element through the signal inputting device, and then a sound is emitted. The thermoacoustic device is a kind of sounding device, which is a sounding device 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). This document discloses a thermoacoustic device, and the thermoacoustic device realizes sound by passing an alternating current into a conductor. The conductor has a small heat capacity (Heat capacity), thin thickness, and can quickly conduct the heat generated inside it to the surrounding gas medium. When alternating c...

Claims

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Application Information

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IPC IPC(8): H04R23/00
Inventor 刘亮
Owner BEIJING FUNATE INNOVATION TECH
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