Ventilation equipment may have a problem with too much noise in actual use, so how do we avoid this problem? This requires us to do noise reduction in the following three aspects of the design, manufacturing, and installation of ventilation equipment:
1. Reduce the sound source noise of ventilation equipment
(1) Reasonably select the models of ventilation equipment. In cases with high noise control requirements, low noise ventilation equipment should be selected. Different types of ventilation equipment has a small noise in the air volume, underwind pressure, and wing -type blades. The noise of the centrifugal ventilation equipment of the front -to -version blades is high.
(2) The working point of ventilation equipment should be close to the highest efficiency point. The higher the ventilation equipment of the same model, the smaller the noise. In order to keep the operating conditions of ventilation equipment in high -efficiency areas of ventilation equipment, the use of valves should be avoided as much as possible. If a valve must be set up at the end of the ventilation equipment, the best position is to be 1m from the exit of the ventilation equipment. It can reduce noise below 2000Hz. The air flow at the entrance of the ventilation equipment should be kept uniform.
(3) Properly reduce the speed of ventilation equipment under possible conditions. The rotation noise of the ventilation equipment is proportional to the 10 -back speed of the leaf wheel round, and the vortex noise is proportional to the leaf round speed of 6 times (or 5 times). Therefore, reducing speed can reduce noise.
(4) The noise level of ventilation equipment in and exporting is the increase in ventilation and wind pressure. Therefore, when designing the ventilation system, the system should be reduced as much as possible. When the total amount and pressure loss of the ventilation system can be divided into small systems.
(5) The flow rate of airflow in the pipe should not be too high, so as not to cause regeneration noise. The air flow rate in the pipeline should be selected according to different requirements in accordance with relevant regulations.
(6) Pay attention to the transmission method of ventilation equipment and motor. The noise of ventilation equipment with direct connected transmission is the smallest. The secondary triangle belt is slightly worse with the secondary triangle belt. Ventilation equipment should be equipped with low -noise motors.
2. Delivery channels to suppress the noise of ventilation equipment
(1) Prepare appropriate mufflers on the entrance and air outlet of ventilation equipment.
(2) The ventilation equipment is equipped with a refreshing base, and the ink and air outlet are connected.
(3) October treatment of ventilation equipment. Such as the equipment ventilation equipment sound cover; setting only sound materials in the ventilation equipment case; set the ventilation equipment in a special ventilation equipment room, and set the soundtrack door, sound windows or other sound absorption facilities, or in ventilation equipment in ventilation equipment, or in ventilation equipment There is another duty room in the room.
(4) Opinification measures for the entry and exhaust channels of the ventilation equipment room.
(5) The ventilation equipment is arranged in a room that is far from quiet.
3. Maintain maintenance in a timely manner, check and maintain regularly, replace damage parts in time, eliminate abnormalities to create low noise operation conditions.