An intake muffler structure for a silent generating set
A generator set and quiet technology, applied in the direction of intake muffler, etc., can solve the problems of unadjustable noise reduction effect and frequency characteristics, limited noise reduction, etc., achieve simple structure, meet noise reduction design requirements, and reduce noise radiation Effect
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Embodiment 1
[0014] An air inlet noise reduction structure for a silent generating set, which is composed of a casing 1, a folding plate 2, an air inlet 3 outside the unit and an air outlet 4 inside the unit.
[0015] Such as figure 2 As shown, under the negative pressure formed by the cooling fan of the unit itself, the fresh air outside the unit enters the air intake air passage formed by the gap between adjacent folded plates through the air inlet 3 outside the unit, and enters the silent unit through the air outlet 4 inside the unit Cool the surface of the unit in a closed space.
[0016] Such as image 3 As shown, when the bending angle of the folded plate 2 is adjusted, the sections of the intake air flow channel will gradually shrink or gradually expand, and the unit will radiate noise outward through the intake air flow channel to the sound source due to the change of the channel section. Direction, that is, the internal reflection of the unit’s enclosed space, thereby reducing ...
Embodiment 2
[0018] An intake and noise reduction structure for a silent generator set, comprising a casing 1, several flaps 2, an air inlet 3 outside the unit and an air outlet 4 inside the unit. The housing 1 of this embodiment is surrounded by rigid materials. see figure 1 , the housing 1 is surrounded by four rigid side walls, that is, the housing 1 is a hollow cube with two sides open. Among the two open ends of the hollow cube, one end is the air inlet 3 outside the unit, and the other end is the air outlet 4 inside the unit. That is, the air outlet 4 inside the unit faces the unit, and the air inlet 3 outside the unit faces the ambient air. During operation, air is sucked in through the air inlet 3 outside the unit, and the inhaled air flows through the inside of the housing 1 and then enters the inside of the unit through the air outlet 4 inside the unit.
[0019] In this embodiment, the plurality of folded plates 2 are arranged inside the housing 1 , and the gaps between adjace...
Embodiment 3
[0022] The basic structure of this embodiment is the same as that of Embodiment 2, but preferably, the width of the flap 2 is equal to the width of the shell 1 . Further, the bending angle of the folded plates 2 can be adjusted, so that the shape of the air flow between the two folded plates 2 can be changed to achieve the best noise reduction effect.
[0023] see figure 2 , the folded plate 2 is in an "M" shape, that is, it has three bends, and the angle of each bend can be adjusted. In the embodiment, among the three bends of the folded plate 2, one of the bends in the middle is marked as α, and the bends on both sides of the angle α are marked as β and γ respectively (both from the cross-section of the folded plate 2 Measured above, all measure angles less than 180°). In one embodiment, α=0.3β˜β, and γ is any angle. Achieved a very good noise reduction effect. In another embodiment, α=0.5γ˜γ, and β is any angle, which can also achieve better noise reduction effect. An...
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