CN2791532Y

CN2791532Y - Ventilating noise-reducing box

Info

Publication number: CN2791532Y
Application number: CN 200520090089
Authority: CN
Inventors: 王建陇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-05
Filing date: 2005-04-05
Publication date: 2006-06-28
Anticipated expiration: 2015-04-05

Abstract

The utility model provides a ventilating sound reducing box which aims to solve the technical problem that a closed type sound reducing box is made of sound isolating material and isolates sounds as well as heat, so that the ventilating effect of the closed type sound reducing box is poor and an electric machine in the sound reducing box nearly can not work because of high temperature particularly in summer. In order to solve the problem, people usually detach a plate from the sound reducing box for ventilation, but noises can come out from the sound reducing box. The utility model is characterized in that air inlet windows are arranged at a left and a right symmetrical positions on the wall of the sound reducing box, air outlet windows are arranged at a left and a right symmetrical positions on the wall of the sound reducing box or on an upper cover and symmetrical fences are arranged at both sides in front of each of the windows to form symmetrical air channels. The utility model has the advantages of the ventilating sound reducing box not only eliminates noises, but also solves the heat radiating problem of electric machines.

Description

The ventilated type Sound Attenuator

Technical field

The utility model relates to a kind of Sound Attenuator, particularly ventilation blower use, the ventilated type Sound Attenuator.

Background technology

Ventilation blower is a kind of ventilation equipment.It when operation motor and impeller both can produce very big noise, also can produce high temperature simultaneously.In order to prevent noise, can cover a closed Sound Attenuator in the outside of blower fan usually, this noise reduction tank wall is to be made by acoustic material.Acoustic material is sound insulation not only, and it still is a kind of heat-barrier material, so its ventilation effect extreme difference, particularly the motor in the summer Sound Attenuator is because temperature is too high, almost can't work, people pull down a plate usually on the noise reduction casing for this reason, in order to ventilation, guarantee the motor operate as normal, but this moment, noise can spread out of outside the case again.

Summary of the invention

The purpose of this utility model is to provide a kind of ventilated type Sound Attenuator that can avoid above-mentioned deficiency.

The purpose of this utility model is achieved in that it has blower fan and Sound Attenuator, it is characterized in that: an air intake window is set on the symmetrical position of noise reduction tank wall, on noise reduction tank wall or the symmetrical position of loam cake an air-out window is set, the both sides before each window are provided with symmetrical fence and form symmetrical air channel.During blower fan work, electric motor fan is worked simultaneously, makes the case outer air form convection current by air intake window and air-out window on motor, is the motor cooling, and the noise of motor generation simultaneously forms the noise stationary point by symmetrical air channel at the window place, abate the noise.

The utility model is compared with the prior art scheme, and it not only abates the noise, and has also solved heat dissipation problem for motor.

Description of drawings

Further specify the utility model below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cutaway view (in figure arrow represent airflow direction) of Fig. 1 along the A-A line.

Fig. 3 is the cutaway view (in figure arrow represent airflow direction) of Fig. 1 along the B-B line.

The specific embodiment

The 1st, the air inlet of blower fan, the 6th, the gas outlet of blower fan, the 2nd, Sound Attenuator, directly over Sound Attenuator sidewall 2.2 that motor 5 afterbodys face toward, an air intake window 4 is set, both sides before this window are provided with symmetrical fence 7 and form left-right symmetry air channel 8, loam cake 2.1 motor corresponding positions at the noise reduction casing are provided with an air-out window 3, and the both sides before this window are provided with symmetrical fence 9 and form left-right symmetry air channel 10.During blower fan work, electric motor fan is worked simultaneously, makes the case outer air form convection current by air intake window and air-out window on motor, is the motor cooling, and the noise of motor generation simultaneously forms noise stationary point (dotted line place) by symmetrical air channel at the window place, abate the noise.

Claims

1, a kind of ventilated type Sound Attenuator, it has blower fan and Sound Attenuator, it is characterized in that: an air intake window is set on the symmetrical position of noise reduction tank wall, on noise reduction tank wall or the symmetrical position of loam cake an air-out window is set, the both sides before each window are provided with symmetrical fence and form symmetrical air channel.

2, according to the described ventilated type Sound Attenuator of claim 1, it is characterized in that: said air intake window be arranged on noise reduction tank wall that the motor afterbody faces toward directly over, said air-out window is arranged on the loam cake motor corresponding position of noise reduction casing.