Noise reducing method and system, electronic expansion valve and air conditioner

Abstract

The invention discloses a noise reducing method and system, an electronic expansion valve and an air conditioner. The method comprises the steps that a primary sound source of environmental noise is collected, wherein the environmental noise comprises electronic expansion valve noise serving as a noise source and / or near-field noise of the noise source; active noise reducing processing is performed on the environmental noise on the basis of the collected primary sound source. According to the scheme of the noise reducing method and system, the electronic expansion valve and the air conditioner, the detects that in the prior art, the noise reducing effect is poor, the application range is small, and the reliability is low are overcome, and the advantages of being good in noise reducing effect, large in application range and high in reliability are achieved.

Description

technical field [0001] The present invention relates to the technical field of air conditioner noise reduction, in particular to a noise reduction method, system, electronic expansion valve and air conditioner. Background technique [0002] Existing commercial air-conditioning indoor units, such as air duct units, patio units, wall-mounted units, and seat cranes, all use electronic expansion valves for throttling; however, the noise increases suddenly after the valve body throttling. [0003] In order to reduce the sudden increase of noise after throttling of the valve body, the existing technology usually adopts a passive noise reduction method, that is, a thicker damping block is used to wrap the electronic expansion valve and the shunt. This passive noise reduction method can achieve a certain degree of sound absorption and noise reduction, but there are still some shortcomings. For example: [0004] There are blind spots in noise reduction and system fluctuations have ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to, in view of the above defects, propose a noise reduction method, system, electronic expansion valve and air conditioner to solve the problems of active noise reduction through real-time noise monitoring, more efficient noise elimination, and improved scope of application and reliability. Problems, so as to achieve the effect of good noise reduction, wide application range and high reliability

Images