Noise reduction device for small air conditioner outdoor unit

Abstract

The invention belongs to the technical field of environmental protection, and particularly discloses a noise reduction device for a small air conditioner outdoor unit. The noise reduction device is formed by combining a noise reduction plate, an elastic partition plate, a low-resistance exhaust silencer, a steel base and a weather-proof anti-vibration pad and has the functions of reducing air sound transmission, structure sound transmission, air inlet and air exhaust; the elastic partition plate is used for separating an air inlet channel from an air exhaust channel in a sound insulation cover, so that the air conditioner performance is prevented from being affected by an airflow short circuit caused by the fact that hot air exhausted by the unit is absorbed by the unit; and meanwhile, structural sound of the unit is prevented from being transmitted to the noise reduction plate of the sound insulation cover through the partition plate to be transmitted indoors. The noise influence problem of the air conditioner outdoor unit is systematically solved, the air sound and the structural sound of the air conditioner outdoor unit are effectively reduced, the good ventilation and exhaust functions are achieved, the noise reduction performance is stable, the appearance is compact, the appearance size can be designed and assembled according to the field environment, and the noise contradiction problem between neighbors is effectively solved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a noise reduction device for a small air conditioner external unit. Background technique [0002] With the improvement of living standards, air conditioners have entered thousands of households. For homes and small offices, the required air conditioner power is small, and wall-mounted air conditioners (1, 1.5, 2, and 2.5 horses, etc.) are generally the main ones, and the external units of the air conditioner are usually installed on the outer wall. Due to the small distance between adjacent households, the noise generated by the operation of the air conditioner's external unit is air-borne (the noise is transmitted into the household through the doors, windows and holes on the wall through the air) and structural sound (the noise is transmitted through the air-conditioning external unit). The steel bracket is transmitted to the floor or wall, and then transmitte...

AI Technical Summary

Problems solved by technology

[0003] At present, there are four main solutions to noise reduction in this area: the first method is to replace the silent air conditioner, but whoever pays becomes the core of the problem, and the final result is often delayed; Adding rubber vibration damping pads on the top of the air conditioner is effective for noise reduction of the external unit of the air conditioner mainly based on structural sound transmission, but it has little effect on noise reduction of the external unit of the air conditioner mainly based on air transmission, and the rubber vibration damping pad The weather resistance is very poor. After a few years, as the rubber ages, the vibration damping effect will gradually decrease, and the noise problem will appear again; the third method is to move the machine, that is, to move the air conditioner to a farther place. This method is often limited by the site and cannot be implemented. ; Method 4. Install the external unit of the air conditioner in a soundproof box. This method is effective for noise reduction of the external unit of the air conditioner mainly based on air-borne sound transmission, but has little effect on the noise reduction of the external unit of the air conditioner mainly based on structural sound transmission. effect, and because the ventilation of the box is very poor and there is a short circuit of the air flow, the performance of the air conditioner's external unit is often greatly reduced, and most of them cannot be used. They can only be used after removing some panels on the sound insulation cover, but at this time the noise reduction effect will not be achieved.

Images