Motor fan blades

The motor fan blades of Xi'an Simo Motors mainly include three types: plastic fan blades, aluminum fan blades, and iron fan blades. The Simo motor fan blades are corrosion-resistant, high-strength, low-noise, high-efficiency, aesthetically pleasing in appearance, easy to install, and finely manufactured. A large number of accessories such as fan blades are in stock for conventional motors. 异型风机 can also be processed and manufactured according to user requirements.

Overview of Motor Fan Blades

The motor fan is a kind of motor with a fan hub and blades. There are evenly distributed slots along the outer circumference of the fan hub, and the blades are inserted into the slots. Through permanent connection methods such as welding and bonding, the blades and the fan hub are integrated into one. The motor fan has good overall balance, which can save the man-hours required for adjusting the balance, and its weight is reduced by more than 30% compared with the bolt-connected fan. When the motor using this utility model is running, both the vibration and noise are reduced.
Although the motor fan has high reliability, it is still a mechanical device. When used for a long time, its speed may decrease or even stop. Therefore, it is best to monitor the running status of the fan in real time to facilitate the timely discovery of problems. Currently, there are two types of monitoring methods for the fan itself: alarm sensors and speed sensors. Using an alarm sensor can give an alarm signal when the fan speed is lower than a certain threshold, while the speed signal output can realize real-time monitoring of the fan speed. The alarm signals output from the fan circuit have two states: "high level" and "low level". Generally, according to the positive logic system, the high level represents "fault", and the "low level" represents "normal". The speed signals output from the fan circuit are usually in the form of pulses, and each wave peak indicates that the fan has rotated one circle. Such signals can be directly provided to the host for display through the data bus. The speed signals output by some fans are not the real speed of the fan but a multiple of the speed. For example, 2, 4, or 6 pulses are generated per revolution, and they must be processed to form a signal reflecting the real speed of the fan. To determine whether the fan speed is the real speed or a certain multiple, a tachometer can be used to measure the actual speed and then compare it with the displayed data. The speed measurement signal of the fan is generally output from a three-lead plug. Among the three leads, the yellow and black ones are the +12V power supply and the ground respectively, and the wire of the other color is the speed signal output wire. It should be noted that for some three-lead fans, the third lead is not the speed measurement signal output wire but the speed control signal wire, through which the speed control signal is input to the fan motor.

Specification Differentiation of Motor Fan Blades

The motor fan blades are differentiated according to the frame numbers of the motors. For example, in the Y series: 80, 90, 100, 112, 132, 160, 180, 200, 225, 250, 280, etc.

Precautions for Purchasing Motor Fans

1. Check the Random Documents
   The motor fan is randomly equipped with an instruction manual, a product certificate, an electrical circuit diagram, and a packing list. Check the packing list and verify the components.
2. Check the Appearance of the Motor Fan
   Carefully check whether there are obvious deformations in the fan guard and the fan blades of the motor fan. When rotating the fan blades, they should be light, fast, and flexible, and should not always stop at the same position.
3. Check the Starting Performance
   The starting performance is an important quality indicator of the motor fan. During the inspection, at the low-speed gear and when the power supply is at 85% of the rated voltage, the motor fan should be able to start from a standstill and operate normally. The shorter the time required for a motor fan to start and reach normal operation, the better the starting performance of the motor fan.
4. Check the Speed Regulation Performance
   After powering on, there should be no abnormal noise in the mechanical transmission part of the fan. When the electric fan is running at high, medium, and low speeds, both the motor and the fan blades should be stable, with small vibrations and low noise. The shaking and stopping of the motor fan should be agile, without intermittent, stagnant, and shaking phenomena.
5. Check for Electric Leakage
   After powering on the motor fan, if there is a tingling feeling when touching it with your hand, and when testing it with a test pencil, the test pencil also emits light, it can be determined that the casing is leaking electricity, and the fan should not be used.
6. Check the Continuous Operation of the Motor Fan
   After the electric fan has been running continuously for 2 hours, if the surface of the machine head casing is too hot to touch, it means that the temperature is too high, and the fan cannot be used. Under normal circumstances, the surface temperature of the machine head casing is below 50℃, and there should be no feeling of being too hot to touch.