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Anonymous users2024-02-10The high-pressure fan generally has a high speed, small blades, and a large blade angle The air volume is small compared to the low-pressure fan (the fan blade length is short, the fan diameter is small, and the speed is above 1500 rpm, the blade is close to a 45-degree angle, and the full pressure can reach more than 800pa) The low-pressure fan generally has a low speed, low wind pressure, and a large processing air volume (the fan blade is long, the fan diameter is large, and the speed is 500 rpm. low.
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Anonymous users2024-02-09What was said upstairs was not right.
The load of fans and pumps is the square torque load, that is, the torque of the load is proportional to the square of the speed. The main components of the fan are the fan blades, the motor, and the connecting shaft. When the power is turned on, the motor drives the fan blades to rotate and plays the role of a fan.
The fan is widely used, and it is also used in dust removal, ventilation, and air conditioning in factories, but it does not belong to the accessories of air conditioning.
There is no technical difficulty, the main load type is the square torque load, and it is best not to choose the general-purpose inverter when using frequency conversion control, but to choose the special type of fan pump.
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Anonymous users2024-02-08Fan load refers to a load mode, relative to pump load, etc. This kind of load is like a fan, when the motor speed is higher, the load of the fan is larger, that is to say, the load is proportional to the motor speed.
Fan load motor refers to the motor developed and produced for the special situation of fan load. The output torque and speed changes of this motor work well together to better accommodate these loads.
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Anonymous users2024-02-07Angular joints.
Angular joints.
When the star connection is running, the speed is not as fast as the angular connection, and the wind force is much smaller than the angular connection, but the running current is larger than the angular connection, and the motor will be burned out after a long time. Even if the motor is not burned, it is not cost-effective to run with the star connection, the star connection operation cannot reach the rated speed, the wind power drops a lot, the efficiency is low, the electricity is not saved much, but the wind power is lost a lot, and it is not proportionally reduced.
If you don't need such a large amount of wind, it is better to have a wind turbine with a lower power.
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Anonymous users2024-02-061. The motor of Y series 80-315 frame number generally uses the impeller of the open centrifugal fan. There is also a mixed stream.
formula. 2. Gao Chunnian hand pressure YKK series motor adopts closed centrifugal impeller.
3. You think it's right to think that he is not efficient. Because for the fan, he only has one impeller is officially high, and he does not have a special set of one of the main components of the fan, the casing and the air inlet, so the efficiency is very low compared with the regular fan. But for the motor, the structure is simple and convenient, and the power is very small, which can be ignored.
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