A multi-layer carbon nanotube film stack loudspeaker based on thermoacoustic effect

Abstract

The present invention provides a multilayer carbon nano tube thin film stacked loudspeaker based on a thermoacoustic effect, belonging to the field of mechanical design. The loudspeaker comprises an outer frame and multiple layers of carbon nano tube thin films which are parallel to one another and connected in parallel, and the number of the layers is at least 2 and at most 4. The carbon nano tube thin films are formed by carbon nano tubes, the two ends of the carbon nano tube thin films are connected with metal electrodes which are fixed on the outer frame, the metal electrodes at the same side are connected with the same wire, and the metal electrodes connected with each layer of carbon nano tube thin film are not in contact. Sound production elements generate corresponding temperaturechange according to accessed audio signals to allow mediums around to rapidly expand and extract to emit sound waves. The loudspeaker provided by the invention has no a vibration part to avoid a resonance effect; the multilayer carbon nano tube thin film stacked loudspeaker is simple in structure and few in consumable items required by making, can be made to be any shape as required, and the soundfield medium is uniformly heat without a segmentation vibration phenomenon; and the loudspeaker provided by the invention can generate high-volume sound in an audible sound range, and can be appliedto audible sound devices such as a sound and a radio.

Description

technical field [0001] The invention belongs to the field of mechanical design, and relates to a thermoacoustic sounding device, in particular to a multi-layer carbon nanotube film speaker based on thermoacoustic effect. Background technique [0002] Loudspeaker is a transducer device that converts electrical signals into sound signals, and is the most important part of sound. The quality of its performance directly affects the quality of sound. In modern society, speakers are playing an indispensable role, especially with the improvement of people's living standards, the demand for high-quality audio is increasingly prominent. Therefore, it is particularly important to design and manufacture a loudspeaker with a wide frequency response range and low distortion. [0003] The existing loudspeakers are all electric loudspeakers, and their working principle is: when the audio current flows through the voice coil, the voice coil placed in the magnetic field is subjected to the ...

AI Technical Summary

Problems solved by technology

Therefore, one dynamic speaker cannot satisfy the range of all audible sounds, and the existing professional audio can only use multiple speaker units of different sizes to solve this problem

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