CN201234183Y

CN201234183Y - Noise lowering ventilation apparatus for motor

Info

Publication number: CN201234183Y
Application number: CNU2008200406975U
Authority: CN
Inventors: 文立强; 王大庆; 陈理; 高芙蓉
Original assignee: 无锡华达电机有限公司
Current assignee: Thunder Electric (wuxi) Co Ltd
Priority date: 2008-07-08
Filing date: 2008-07-08
Publication date: 2009-05-06
Anticipated expiration: 2018-07-08

Abstract

The utility model relates to a noise reducing and ventilating device of a motor, which is used for the ventilation and the noise reduction of a large motor. The device comprises a cover body. The cover body has an opening surface; blinds are respectively arranged at two ends and on two sides of the cover body; two baffles separate the cover body into three chambers; the blinds at two ends of the cover body are respectively communicated with two air inlet chambers at two ends of the cover body; and the blinds on two sides of the cover body are respectively communicated with two air outlet chambers. The device is characterized in that maze-shaped ventilation passages are arranged in the air inlet chambers and the air outlet chambers; and noise absorbing cotton is arranged in the ventilation passage and on the wall of each chamber. Maze-shaped ventilation passages are adopted in the air inlet chambers and the air outlet chambers, and the noise absorbing cotton is arranged in the ventilation passage and on the walls of chambers, so that when the heat of the motor is radiated effectively, the ventilation noise can be effectively reduced, and the noise pollution to the surrounding environment is reduced.

Description

The motor noise-reducing ventilation unit

Technical field

The utility model relates to a kind of noise reduction ventilation unit, especially relates to a kind of noise reduction ventilation unit that is used for motor.

Background technology

In the prior art, the ventilation and heat of big motor is finished by the fan that motor carries, upper unit at motor has an overhead guard, the open surface of overhead guard is connected with the top of motor, overhead guard two ends and both sides are respectively arranged with blind window, two dividing plates are divided into three chambers with overhead guard, and the blind window at two ends is communicated with two air intake chambers at two ends respectively, and the blind window of both sides is communicated with the air-out chamber of centre.The air inlet of motor is communicated with two air intake chambers, the air outlet of motor radiating fan is communicated with the air-out chamber, pass through the blind window air intake of overhead guard both ends of the surface like this, utilize the fan of motor internal to carry out the wind path circulation of motor internal, then from the blind window air-out of air-out chamber two sides, take away heat, to reach the effect of cooling motor.Though this mode can reach the effect of the ventilation and heat of motor, the noise that ventilates is very big, and the environment around the motor is produced noise pollution.

The utility model content

The applicant has carried out research and has improved at the problem of above-mentioned motor ventilation noise, and a kind of motor noise-reducing ventilation unit that reduces the ventilation noise, reduces noise pollution is provided.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of motor noise-reducing ventilation unit, comprise a cover body, the recording quantity of described cover body, its two ends and both sides are respectively arranged with blind window, two dividing plates are divided into three chambers with cover body, and the blind window at two ends is communicated with two air intake chambers at two ends respectively, and the blind window of both sides is communicated with the air-out chamber of centre, be provided with the labyrinth shape vent passages in described air intake chamber and the air-out chamber, device has acoustical cotton on vent passages and each chamber wall.

Further:

The labyrinth shape vent passages of described air intake chamber is separated the air intake chamber by riser and connected swash plate and is constituted.

The labyrinth shape vent passages of described air-out chamber is separated the air-out chamber by the connection swash plate under upper and lower cross one another riser and the riser and is constituted.

The pre-installed wind scooper that is equipped with of the blind window of described cover body both sides.

The opening of described wind scooper upwards.

Described air intake chamber sidewall is provided with observation window, and device has cover plate on the observation window.

Described acoustical cotton is bonded on vent passages and the chamber wall by glue, and the acoustical cotton outer surface covers steel wire, and the limited post that is fixed on vent passages and the chamber wall passes acoustical cotton, steel wire and cramp, and limited post hooks cramp.

Technique effect of the present utility model is:

The disclosed a kind of motor noise-reducing ventilation unit of the utility model, owing in air intake chamber and air-out chamber, adopt the labyrinth shape vent passages, device has acoustical cotton on vent passages and chamber wall, when motor is carried out efficiently radiates heat, effectively reduce the ventilation noise, reduce noise pollution surrounding environment.

Description of drawings

Fig. 1 is the utility model front view.

Fig. 2 is the upward view of Fig. 1.

Fig. 3 is the A-A place cutaway view of Fig. 1.

Fig. 4 is the left view of Fig. 1.

Fig. 5 is the cotton scheme of installation of noise reduction.

Fig. 6 is user mode figure of the present utility model.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As Fig. 1,2,3, shown in 4, the utility model comprises a cover body 1, the recording quantity of cover body 1, open surface is connected with the top of motor, be provided with blind window 3 (Fig. 4) at the two ends of cover body 1, be provided with blind window 4 (Fig. 3) in cover body 1 both sides, two dividing plates 2 are divided into three chambers with cover body, two the air intake chambers 5 and the middle air-out chamber 6 at two ends, the blind window 3 at two ends is communicated with two air intake chambers 5 at two ends respectively, the blind window 4 of both sides is communicated with the air-out chamber 6 of centre, is provided with the labyrinth shape vent passages in air intake chamber 5 and the air-out chamber 6, and device has acoustical cotton 15 on vent passages and each chamber wall.By seeing among Fig. 5, in the present embodiment, acoustical cotton 15 usefulness glue 19 are bonded on vent passages and each chamber wall, the acoustical cotton outer surface is coated with steel wire 16, the limited post 17 that is weldingly fixed on vent passages and the chamber wall passes acoustical cotton 15, steel wire 16 and cramp 18, the distance that limited post 17 hooks between 18, two cramps 18 of cramp is not more than 200 millimeters, and the thickness of acoustical cotton 15 is 25 millimeters.The labyrinth shape vent passages of air intake chamber 5 is separated the air intake chambers by riser 7 and connected swash plate 8 and is constituted (among airflow direction such as Fig. 1 B to).Going up riser 9 for three is connected on the wallboard of air-out chamber 6 by last connection swash plate 10, two following risers 11 are by on the wallboard that connects swash plate 12 down and be connected to air-out chamber 6, go up risers 9 and two following riser 11 mutual skewing mechanisms for three, they are with last connection swash plate 10, connect the labyrinth shape vent passages that swash plate 12 and air-out chamber 6 constitute air-out chamber 6 (among airflow direction such as Fig. 3 C to) down.Swash plate 8, on connect swash plate 10 and connect swash plate 12 down and also can reduce air intake or the resistance of air-out air-flow in vent passages, also can reduce the generation of noise simultaneously.The blind window 4 pre-installed wind scoopers 13 that are equipped with of cover body 1 both sides, the opening of wind scooper 13 upwards upwards discharge the hot blast of discharge.Be provided with observation window 14 on air intake chamber 5 sidewalls, device has cover plate on the observation window 14, opens the situation that the cover plate on the observation window 14 can be observed cover body 1 inside.

As shown in Figure 6, the utility model device is at the top of motor 20, and two air inlets 201 of motor 20 are communicated with air intake chamber 5, and the air outlet 202 of the radiator fan 203 of motor 20 is communicated with air-out chamber 6.When motor 20 runnings, the cold wind that motor 20 sucks the surrounding environment from air intake chamber 5, after motor 20 inner loop, hot blast enters air-out chamber 6 from the air outlet 202 of radiator fan 203, upwards discharges through blind window 4 and wind scooper 13.Air-flow is when flowing through air intake chamber 5 and air-out chamber 6, because the effect of noise reduction cotton and labyrinth shape vent passages, the effect that reduces noise is obvious, has the motor of ventilation unit of the prior art to compare with device, 15～20 decibels of noise reductions can be widely used in for the strict place of motor noise.Motor 20 among Fig. 6 does not belong to member of the present utility model.

Claims

1. motor noise-reducing ventilation unit, comprise a cover body, the recording quantity of described cover body, its two ends and both sides are respectively arranged with blind window, two dividing plates are divided into three chambers with cover body, and the blind window at two ends is communicated with two air intake chambers at two ends respectively, and the blind window of both sides is communicated with the air-out chamber of centre, it is characterized in that: be provided with the labyrinth shape vent passages in described air intake chamber and the air-out chamber, device has acoustical cotton on vent passages and each chamber wall.

2. according to the described motor noise-reducing ventilation unit of claim 1, it is characterized in that: the labyrinth shape vent passages of described air intake chamber is separated the air intake chamber by riser and connected swash plate and is constituted.

3. according to the described motor noise-reducing ventilation unit of claim 1, it is characterized in that: the labyrinth shape vent passages of described air-out chamber is separated the air-out chamber by the connection swash plate under upper and lower cross one another riser and the riser and is constituted.

4. according to the described motor noise-reducing ventilation unit of claim 1, it is characterized in that: the pre-installed wind scooper that is equipped with of the blind window of described cover body both sides.

5. according to the described motor noise-reducing ventilation unit of claim 4, it is characterized in that: the opening of described wind scooper upwards.

6. according to each described motor noise-reducing ventilation unit of claim 1 to 5, it is characterized in that: described air intake chamber sidewall is provided with observation window, and device has cover plate on the observation window.

7. according to each described motor noise-reducing ventilation unit of claim 1 to 5, it is characterized in that: described acoustical cotton is bonded on vent passages and the chamber wall by glue, the acoustical cotton outer surface covers steel wire, the limited post that is fixed on vent passages and the chamber wall passes acoustical cotton, steel wire and cramp, and limited post hooks cramp.