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No matter what form of fan, it is composed of cases, rotors, motors, rolling bearing, sealing, moisturizing water cooling equipment, etc. The rotor of the fans contains the main shaft, the fans impeller, the axis, the shaft cover, and the balanced plate. The motor contains the baffle, sealing, inlet gas chamber, and the amplifier, flow tract, and runner on the baffle. Some of the fans of the fan have a steam derived device before the number of fans.
1. Vortex fans
According to the provisions of the use, the vortex fans have a variety of different structures.
Vortex fan structure form
(1) Different structural forms of rotating directions
The vortex fan can be made into two types: right or left -handed. Correct understanding from the transmission device, the turning of the fan's leaf rotation is called the right rotation clockwise, and the "right. Expression; on the contrary, the left rotation is expressed with" left ".
(2) Different structures in the direction of the vapor
There are two types of vortex fans in one side (single suction) and bilateral inlet (double suction).
The single -sucking fan is divided into one side of the single -pole fan impeller and the bipolar fans of one side. Under the same circumstances, the air pressure caused by the double fan impeller is twice the single fan impeller.
(3) Different structure forms of the transmission system party
Depending on the application status, there are many ways to drive the transmission system of the axial flow fan. If the fan speed ratio is the same as the motor speed, the large and medium -sized fan can use a shaft to connect the fans and motor direct transmission systems, and the small and medium -sized fan can immediately install the fan's impeller to the motor; if the speed ratio is different, the eccentric wheel can be used. Speed transmission system. There are also various ways of transmission systems.
The axis flow fan can be divided into high, medium, and bottom pressure shaft fans according to the working pressure; according to the main purpose and can be divided into ordinary, explosion -proof type, anti -corrosion, pumping, etc. according to the raw materials And Berry Steel and so on. The full name of the axial fans includes the brand name, model specifications, machine numbers, transmission system methods, rotating orientation and air outlet.
Second, shaft circulation fan
The shaft circulation fan can be divided into cylindrical, simple cylinder, and fan -type shaft circulation fans according to the structure of the structure; the position of the shaft can be divided into a pillar and horizontal axis circulation fans.
At this stage, the axis flow fans in my country are divided into two categories: bottom pressure and pneumatic pressure according to the pressure of work pressure. The bottom pressure shaft circulation fan is lower than or equivalent to 38OPA;
Among them, different uses can be divided into: usually axis circulation fan, well shaft circulation fan, water cooling shaft circulation fan, heating furnace shaft circulation fan, tunnel construction shaft circulation fan, textile shaft circulation fan, Chemical gas conveying shaft circulation fans, the shaft flow of the well is naturally ventilated, and the axis circulation fan of the cold air shafts and other main use shaft flow fans.
There are a variety of different structures according to the provisions of the use.
Oxygers structure form
(1) Divide in the form of structural form
The two -rotor axis of the Ruz drum fan is in the same vertical plane diagram, and the airflow flows in the level. Inlet, the ventilation port is on both sides of the wind turbine. There are many specifications models, such as dual -fuel tank oxygers, direct -connected oxygers and other specifications.
"W -type (horizontal": The two rotor axes of the drum fan are in the same sea level, the airflow is vertical flowing in, and the air intake is on the side of the case. The orientation of the tube, if it is fully considered from the pressure resistance intensity, it is better to enter the left and right. According to the necessary, the oxygen can be rotated in both clockwise or in the opposite direction.
(2) Press the water cooling method
Wind -cooling type: When the pressure of the entrance and exit is less than 49OKPA (5000mmh = O), the air -cooled structure is used. The heat in the operation of the air -cooled wind turbine uses the method of natural evaporation and cooling. Make a wing -type structure.
Water cooling heat dissipation: When the pressure of the entrance and exit exceeds or is equivalent to 49.OKPA (5000mmH20), the water cooling heat dissipation structure is used. Make cooling circulating water circulating in the clamp.
(3) Press the interface method
The fan is connected to the transmission device with a shaft. That is, the driver is immediately driven, and the eccentric wheel movement can also be used. However, because the eccentric wheel transmission system is not high efficiency, and the rolling bearing is very easy to destroy, usually less adopted.