1. The ventilation area of the entire kitchen exhaust pipe is not enough and the wind speed is too high. It should be set at 10m/s - 15m/s. In most cases, the reason why the exhaust pipe of the whole kitchen is not smooth is that the exhaust wind speed exceeds 15 meters/second
2. The exhaust pipe of the whole kitchen exceeds the beam of the building, the cross-sectional area is too small, and the exhaust resistance is increased, resulting in the imbalance of air flow, resulting in poor exhaust effect.
3. During the design of the exhaust pipe, a part of it is lower than the plane height of the exhaust pipe in the whole kitchen, resulting in long-term oil pollution and poor exhaust.
3、 Local exhaust parts and requirements
1. Chinese kitchen:
Its cooking heat value and smoke exhaust volume are generally large, and the smoke exhaust hood is generally selected from Jinan kitchen. In order to reduce the impact of lampblack on the environment, lampblack extractors can be used.
2. Cooking room:
The requirement for fresh air is not high, but the exhaust effect must be better. Otherwise, the steam will fill the whole workshop and affect the work of the chef. The main waste gas is water vapor, which can be discharged directly without using purification device.
3. Western kitchen:
The amount of cooking is not very large, but it requires a lot of complete equipment, and the amount of exhaust is also smaller than that of the Chinese kitchen.
4. Dishwashing room:
It needs a lot of exhaust. The make-up air of the kitchen requires that a certain amount of fresh air should be added in the kitchen ventilation, and the air supply volume should be considered as 80% - 90% of the exhaust air volume. The negative pressure in the kitchen should not be greater than 5Pa. Excessive negative pressure will cause the kitchen table to drop. Therefore, both the blower and exhaust fan should have the possibility of speed regulation.
Shandong Shenhe Ventilation Equipment Co., Ltd. focuses on the production of Jinan smoke exhaust hood. For more highlights, please click: http://www.jnqsg.com