What are the parameters of common negative pressure fans
1, 1.46 meters negative pressure fan
Model: SJ- MY1460Z03
Power (KW): 0.75
Blade speed (r/m): 450
Air volume (m3/h): 46000
2.1.26m negative pressure fan
Model: SJ-MY1260Z03
Power (KW): 0.75
Blade speed (r/m): 550
Air volume (m3/h): 42000
3, 1.06m negative pressure fan
Model: SJ-MY1060Z03
Power (KW): 0.55
Blade speed (r/m): 650
Air volume (m3 /h): 38000
4, 0.85m negative pressure fan
Model: SJ-MY850Z03
Power (KW): 0.37
Blade speed (r/m): 820
Air exhaust volume (m3/h): 32000
Interpretation of negative pressure fan parameters
1. Motor power
The motor power indicated on the negative pressure fan is generally expressed in kilowatt-hour (KW) units. It is 1.1 kilowatts, which means that the motor consumes 1.1 kWh per hour. Consumers can calculate the line load, power consumption and electricity expenditure when they see this power on the negative pressure fan motor.
2. Motor voltage
There is a voltage parameter on the negative pressure fan motor plate. If the value is 380 volts, it means that the power supply is connected. It is three items of 380-volt industrial power. If the value is written as 220-volt, it means that the connected power supply is 220-volt lighting power. Do not connect the power supply wrongly, otherwise the motor will burn out, or even burn out. the entire wire circuit.
3. Motor speed
The motor speed of the negative pressure fan represents the motor’s empty load, which is the number of times the motor shaft rotates per hour. This parameter is related to the fan blade’s speed. The number of rotations is related to the number of rotations, and the biggest relationship with consumers is that the higher the speed of the negative pressure fan motor, the louder the noise will be. The negative pressure fan motor with a low speed will produce less noise during use, and a lot of negative pressure will be generated. In order to reduce the noise, the fan will reduce the speed of the motor by changing the size of the pulley.
4. Motor brand
The brand indicated on the motor sign represents the motor manufacturer. Users can find the motor manufacturer through this brand. The quality of the motor can be identified according to the brand. Once the motor causes a safety accident, the manufacturer can also be held responsible through the brand.
5. Protection level
The motor protection level stated on the motor label represents the insulation level and waterproof level of the motor. Generally, the higher the protection level, the higher the protection level. The higher the high temperature resistance of the negative pressure fan motor, the longer the continuous operation time, and the better the protection against rainwater splashing. will be shorter than those with higher protection levels.
How to judge the actual air volume of the negative pressure fan
There are many ways to judge the actual air volume of the negative pressure fan. The most scientific method to measure the effect of ventilation engineering is to measure it with an instrument on the air inlet side of the fan.
The FRP trumpet negative pressure fan mainly depends on the opening of the shutters and the air outlet from the bell mouth. , the wind from the center of the circle is as large as the edge, and the wind spreads evenly around.
The louvers of the galvanized sheet square negative pressure fan are at the air outlet, which seriously increases the wind resistance. When a person stands in front of the air outlet and faces the fan, the air volume on the left side of the fan is significantly larger than that on the right side, which is caused by the design defects of the air duct and the fan blades.
Combining the above two points, the air volume of the FRP trumpet negative pressure fan is much larger than that of the galvanized sheet square negative pressure fan. The air volume of the FRP square negative pressure fan is the smallest. When the compressor is placed on the righting frame, it is more obvious than the galvanized plate square negative pressure fan, and the fan will rotate clockwise on the spot.
Declare: The above methods are derived from the program system index or shared by netizens. They are for your reference only and do not represent the research views of this website. sex and authority.
