Cooling tower silencing structure

A technology for cooling towers and mufflers, which is applied in the direction of sound-producing equipment and instruments, can solve the problems of axial flow fan wind pressure, large air volume loss, insufficient noise reduction, and high cost of noise reduction, and achieves the effect of small air volume loss.

Active Publication Date: 2012-07-25
XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The existing cooling tower noise control measures are mainly to install a guide air duct at the outlet of the cooling tower axial flow fan, and to build a resistive circular sound-absorbing sheet. The effective air outlet area of ​​the sound-absorbing sheet is the vertical projection area of ​​the axial flow fan. The disa

Method used

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Examples

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Example Embodiment

[0014] in figure 1 In the middle, the air outlet muffler (5) is on the upper part of the cooling tower (1) axial fan (11), and the two side elevations (20) are on the left and right sides of the cooling tower (1), and the upper platform (19) of the cooling tower (1) Between is the sound insulation layer (9).

[0015] in figure 2 , 3 In the embodiment shown, the upper and lower parts of the resistive noise elimination insert structure (8) of the air outlet muffler (5) are 30° oblique shape (15), and the arc-shaped diversion shape (7) and the axial flow Between the fan (11) is the silencing expansion zone (12), the upper part of the air inlet muffler (6) has a 30° oblique angle shape (15), the vertical sound insulation layer (9) and the filling zone (13), and the middle is the sound insulation The baffle (16), the middle of the sound insulation baffle (16) is the sound insulation layer (9) and the two sides are the sound absorption layer (10), forming the labyrinth muffler str...

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Abstract

The invention relates to a cooling tower silencing structure. An air outlet silencer is arranged on the upper part of a cooling tower, an air inlet silencer is arranged on the lower part of the cooling tower, the air outlet silencer is of an arc-shaped flow guide shape, an expansion silencing area is formed between an air outlet of an axial flow fan and a fa?ade on a front platform of the cooling tower, between the arc-shaped flow guide shape, two side surfaces of the cooling tower and an upper platform of the cooling tower, a resistive silencing insert structure is formed by the air outlet part, the air outlet of the air outlet silencer backs noise sensitive spots, and the resistive silencing insert structure of the air outlet silencer at an air outlet part is a 30-degree oblique angle moulding. A labyrinth type silencing structure is formed in the air inlet silencer. The cooling tower silencing structure ensures that the loss of the exhausted air pressure and air quantity of the cooling tower is small.

Description

technical field [0001] The invention relates to the technical field of noise reduction for cooling towers in air conditioning systems, in particular to a noise reduction structure capable of eliminating cooling tower noise and airborne noise. Background technique [0002] As a heat exchange device, cooling towers are widely used in industrial production and commercial fields. In recent years, with the construction of a large number of high-rise buildings in the city, the podium of the high-rise building is often used as the equipment floor of the cooling tower. The noise of the cooling tower is not blocked, and it directly reaches the building floor next to it, which has a great impact on the life and rest of the residents. Incidents of noise nuisance from cooling towers occur frequently. [0003] The main noise of the cooling tower is the ventilation noise of the circulating fan mainly at low and intermediate frequencies, which also includes the aerodynamic noise generated...

Claims

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Application Information

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IPC IPC(8): F28C1/10
Inventor 林嘉祥江世强卓建文杨锦勇宋继萍唐建武
Owner XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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