Smoke exhaust fan is a kind of machine which can expel odor, high temperature and lampblack gas in the process of food processing in kitchen. It is widely used in industry and household. Now let's introduce the functions and characteristics of exhaust fan. Now smoke exhaust fans can be divided into two categories: centrifugal fans: air flow moving along the diameter direction of fan impeller; axial fan: air flow moving along the axial direction of fan impeller. The total pressure of centrifugal fan is larger and the motor is blocked out of the high temperature fume gas. It's not easy to damage. Axial flow fan is small, in general, high temperature fume gas through the motor, simple damage. So the kitchen generally advocates the use of centrifugal fans.
How to deal with the unstable voltage of fire exhaust fan?
Fire exhaust fan function is excellent, and has been widely used, popular with a wide range of users, and the use of fire exhaust fan is relatively strong, in the unstable voltage conditions can also be used, smoke exhaust fan, but we need to operate it reasonably, as long as this can smoothly complete the task of smoke exhaust: We all know that the fire exhaust fan is mainly suitable for ventilation or high temperature smoke exhaust in high-rise buildings, underground buildings, tunnels, drying rooms, etc. under the condition of medium temperature of 100 degrees Celsius, continuous operation for 20 hours/time without damage, 3C fire-fighting high-temperature fan. The most important parameters of fire exhaust fan are its operating temperature, air volume, noise, full pressure, power, motor power, speed and shaft power. High temperature smoke exhaust fan is mainly suitable for ventilation or high temperature smoke exhaust in high-rise buildings, underground buildings, tunnels and drying rooms. It can work continuously for more than 30 minutes at 280 C. The production and operation environment of high temperature smoke exhaust fan with medium temperature of 100 C is above all these. We must be reasonable according to the explanation. Make use of it, and then make its functions fully displayed.
Smoke exhaust fan is a kind of machine which can expel the odor, high temperature and lampblack gas produced in the process of food processing in kitchen. The machine features excellent high temperature resistance and high efficiency. The phenomenon that the air volume and residual pressure of air supply outlet, smoke exhaust outlet can not meet the standard requirement is quite common in engineering. The wind speed of some air supply outlets and smoke exhaust outlets is even close to zero. The reasons for this phenomenon are relatively complex. Today, we have a specific understanding, which can be found in the following aspects:
Joint positive pressure air supply system unplanned differential pressure conditioning equipment: According to standard requirements, smoke-proof staircase and joint front room of mechanical pressurized air supply should be separated from the independent air supply system. When a common system must be shared, automatic differential pressure conditioning equipment should be installed on the branch air duct leading to the joint front room. At present, many planned combined barotropic air supply systems do not have planned pressure differential conditioning equipment, which can not constitute a staircase with residual pressure higher than the front room. Improper fan selection: According to the standard requirements, the mechanical pressurized air supply volume of smoke-proof staircase and front room, common front room and front room of fire elevator room should be determined by calculation. When the calculated value is inconsistent with the value of standard rules, it should be determined by the larger value of the two. Some plans are determined directly according to the value given by the standard, which often results in the selection of fan air volume and pressure on the low side and can not meet the requirements; some plans adopt the ventilation and mechanical smoke exhaust system, but the construction of the two-speed fan is not in accordance with the planning requirements; some construction units do not order according to the planned fan model, and purchase power specifications are comparable. Small fan, leading to serious shortage of fan air volume.