Noise elimination device for heating and ventilation air conditioner ventilating system

Abstract

The invention discloses a noise elimination device for a heating and ventilation air conditioner ventilating system. The noise elimination device comprises a noise eliminator body which is in an L shape, the tip of the horizontal end of the noise eliminator body is connected with an air feeding pipe, and a flange disc used for connecting is fixed to the air feeding pipe; an air outlet is formed inthe lower part of the vertical end of the noise eliminator body, and a first convergence plate and a second convergence plate are fixed to the inner side of the noise eliminator body; a plurality ofdiagonal holes are formed in the first convergence plate and the second convergence plate correspondingly; and a conical convergence plate is mounted between the second convergence plate and the firstconvergence plate. The design is novel, through the arranged first convergence plate and second convergence plate and the diagonal holes formed in the first convergence plate and the second convergence plate, air passing through the interiors of the diagonal holes can be blown towards the center line of the first convergence plate or the second convergence plate, thus the air entering the interior of the noise eliminator body is gathered towards the middle, the situation that the air is blown towards the side wall of the noise eliminator body is reduced greatly, collision between the air andthe side wall is reduced, and the noise elimination effect is achieved.

Description

technical field [0001] The invention relates to the technical field of heating, ventilating and ventilating, in particular to a noise reduction device for a heating, ventilating, air-conditioning and ventilating system. Background technique [0002] HVAC ventilation system is an important part of HVAC. Since HVAC is the equipment responsible for heating, ventilation and air conditioning in the room or in the car, it can control the indoor temperature and improve the indoor comfort. It is a medium and large industrial building or office building. It plays an important role in fields or industries such as pharmaceuticals, electronics, and oil and gas. [0003] Based on the above, the inventors have found that the existing noise reduction devices used in HVAC ventilation systems use more components, and more metal parts are used for air blocking to achieve the purpose of noise reduction at the places where the internal air flows through. At the same time, when the air flows th...

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Problems solved by technology

[0003] Based on the above, the inventors have found that the existing noise reduction devices used in HVAC ventilation systems use more components, and more metal parts are used for air blocking to achieve the purpose of noise reduction at the places where the internal air flows through. At the same time, when the air flows through the metal, especially the metal sheet, it will cause the metal sheet to vibrate, thereby reducing the sound of the air flowing through it, but generating the rest of the noise, and the metal parts are connected more, and the connection relationship is more complicated. The device is generally used outdoors or in the workshop. The temperature difference between the four seasons causes the parts to expand with heat and contract with cold. The resulting gap will cause harsh noise, and the connection relationship will become loose with the change of temperature difference. The follow-up maintenance is more complicated.

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