The horizontal section of the pipe in the kitchen oil fume purifier smoke exhaust project should not be too long. In particular, the wind resistance of the oil fume purifier device will increase. Generally, the larger horizontal distance should not exceed 15m, and the slope should be more than 2%. A movable joint should be set at the horizontal end to facilitate the cleaning of oil dirt in the pipeline. The new kitchen oil fume purifier should be installed in the front of the kitchen near end smoke exhaust fan as far as possible to reduce the oil fume adhesion between the smoke exhaust pipe and the fan impeller, and extend the pipeline cleaning and fan maintenance cycle. The branch pipe of exhaust hood shall be equipped with air volume regulating valve.
The kitchen air supply system shall adopt DC mode, and the kitchen ventilation engineering system shall adopt variable speed fan or relevant fan for air supply and exhaust. In this way, a large amount of waste gas generated at any time can be discharged to the outside more directly and effectively.
The selection of kitchen oil fume purifier should be matched according to the number of kitchen exhaust and stoves. The exhaust outlet is arranged in the kitchen, and the layout of the exhaust outlet should be considered according to the specific location of the kitchen. The air supply outlet should not be aligned with the head of the cook to avoid affecting the health of the cook and disturbing the exhaust performance of the kitchen. When determining the outlet wind speed of the air supply outlet, the wind speed of 0.25m/s about 2m from the ground is more ideal. The kitchen oil fume purifier is installed in the ventilation and smoke exhaust project. The air supply outlet should be arranged along the direction of the exhaust hood, with a small distance of 00.7m in front of the cover, and the exhaust outlet should be as far away from the exhaust hood as possible. Each cooking kitchen must have a work of air supply.
Attention should be paid to the arrangement of the machine room, fan and air duct. The kitchen exhaust fan should be set in the upper part of the kitchen. The kitchen is a part of the public building. The exhaust fan should be set on the roof layer to keep the air duct in the negative pressure state and avoid odor overflow. The kitchen exhaust shall be far away from the vent of the indoor air conditioning system as far as possible to avoid the kitchen odor and the air conditioning system affecting the air quality of the air conditioning system. Generally, low-noise centrifugal fan shall be selected for kitchen exhaust fan.