The centrifugal fan is based on the principle that kinetic energy is converted to potential energy。 The exhaust hood of Ji'nan uses a high-speed rotating impeller to accelerate the gas, and then slows down and changes the flow direction so that the kinetic energy is converted into potential energy (pressure)。
The most common way to carry cool air is the central air conditioner, which needs thermal insulation. The spiral pipe can be embedded with heat insulation material, and the surface looks beautiful.
In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, the gas flows through the impeller, changes into radial, and then enters the diffuser. In a diffuser, the gas changes the direction of the flow, causing a deceleration that converts kinetic energy into pressure energy. Pressure increases mainly in the impeller, followed by the expansion process. In a multistage centrifugal fan, the flow of air into the lower impeller with a reflux device produces higher pressure.
Hotel, restaurant, hotel lampblack kitchen has many smoke, demand for discharge, with circular duct is the chimney smoke. And the spiral cyclone tube is used as the smoke pipe here.
The negative pressure fan is the use of CAD/CAM design, with low cost, large volume, low noise, low energy consumption, stable operation, long service life, high efficiency, automatic shutter shut dustproof, waterproof, elegant appearance; can hair, but also ventilation, is the best choice for modern workshop ventilation cooling. Environmental protection and energy-saving negative pressure fan will be the mainstream of ventilation and cooling equipment market.
Because the iron sheet is easy to react in various environments, it causes corrosion and rust。 Zinc hardly changes in dry air。
In the humid air, basic zinc carbonate, zinc surface will generate dense membrane。 The spiral air pipe is mainly coated with a layer of zinc on the iron sheet of the wind pipe, and plays a protective role to the iron sheet。
When the centrifugal fan is used, the total pressure loss calculated by the system should be the rated air pressure, but the power of the fan motor should be added 15%~20% on the calculated value.
The exciting content of this article comes from the smoke hood of Ji'nan. Please click on our official website: http://www.qdkailun.com/, thank you for coming!