Industrial Air Purifier Motor Manufacturers

Industrial air purifier motor: Do you need to know these key knowledge?

I. What is the core function of industrial air purifier motor?

The industrial air purifier motor is the "heart" of the equipment operation. Its core function is to drive the fan blades to rotate at high speed to form a strong air flow power:
The polluted air (including dust, harmful gases, oil smoke, etc.) in the industrial environment is sucked into the purifier through suction.
The purified air is pushed back to the workshop or factory to complete the closed loop of air circulation purification.
Its power and speed directly determine the air handling capacity (CADR value) and purification efficiency of the purifier, and it is the key power source to ensure the air quality of industrial sites.

II. What are the common types and applicable scenarios of industrial air purifier motors?

Due to different performance differences, different types of motors have different applicable scenarios:
Brushless direct current motor (BLDC):
Features: high efficiency (usually more than 85%), wide adjustable speed range, low noise, long life (up to more than 10,000 hours), need to be used with a controller.
Applicable scenarios: occasions with requirements for purification accuracy and noise, such as electronic workshops, precision instrument factories, pharmaceutical production workshops, etc.
AC asynchronous motor:
Features: simple structure, low cost, easy maintenance, but medium efficiency (about 70-80%), poor speed adjustment flexibility.
Applicable scenarios: large industrial plants, metallurgical workshops, mechanical processing workshops, etc., which are cost-sensitive and require continuous operation in high-dust and high-pollution environments.
Three-phase asynchronous motor:
Features: high power (up to tens of kilowatts), stable operation, strong overload capacity, suitable for driving large fans.
Applicable scenarios: large chemical plants, painting workshops, steel plants, etc., which need to deal with high-concentration pollution and large air volumes.

III. What are the key technical parameters of industrial air purifier motors?

When selecting and evaluating motors, the following parameters should be focused on:
Power: determines the motor driving capacity, usually ranging from hundreds of watts to tens of kilowatts, and needs to match the fan size and air handling capacity of the purifier (for example, purifiers above 10,000 m³/h often require motors above 5kW).
Speed: affects air flow rate, generally between 1000-3000rpm. High-speed motors are suitable for occasions that require rapid purification (such as fume treatment in welding workshops).
Torque: measures the ability of the motor to overcome air resistance. When the pipeline is long or the filter resistance is large in the industrial environment, a high-torque motor is required to avoid "stalling".
Protection level: The industrial environment is dusty, humid or corrosive. The motor must reach IP54 and above (such as IP55 can prevent water spray, IP65 can prevent dust and low-pressure spray) to avoid damage to internal components.

IV. What special challenges are industrial air purifier motors prone to?

The complexity of the industrial environment poses a severe test to the motor:
Harsh environmental erosion: Dust, oil, acid and alkali gases may enter the motor, causing winding insulation aging and accelerated bearing wear.
Long-term high-load operation: Industrial production is mostly 24-hour continuous operation. The continuous high temperature of the motor is prone to overheating and burning of the winding (overheating protection function is required).
Vibration and noise superposition: The mechanical noise of industrial sites is large. If the dynamic balance of the motor is not good, it will aggravate the vibration and noise of the equipment and affect the workshop environment.
Impact of voltage fluctuation: The voltage of the power grid in some factories is unstable, which may cause the motor speed to fluctuate, reduce the purification efficiency, and even burn the motor.

V. How to extend the service life of the motor of the industrial air purifier?

Targeted maintenance and management can significantly improve the life of the motor:
Regular cleaning and inspection:
Remove dust and oil from the surface of the motor and the heat dissipation holes every month to avoid poor heat dissipation.
Check the bearing wear every quarter and add high-temperature grease in time (especially in high-temperature workshops).
Optimize operating conditions:
Avoid running the motor in an environment where the voltage fluctuation exceeds ±10%, and equip it with a voltage stabilizer if necessary.
Adjust the motor speed according to the degree of pollution (such as BLDC motors can achieve variable frequency speed regulation through controllers) to avoid unnecessary high-load operation.
Timely handling of abnormalities:
If the motor makes abnormal noise, the casing is overheated (over 70℃) or the current is abnormal, stop the machine immediately for inspection to eliminate problems such as winding short circuit and bearing jamming.
Regularly test the insulation resistance (should be ≥0.5MΩ) to prevent the risk of leakage caused by moisture or oil pollution.

VI. What core factors should be considered when selecting an industrial air purifier motor?

Matching with purification needs: Calculate the required air handling capacity based on the workshop area and pollution concentration, and select a motor with corresponding power and speed (e.g. a 1000㎡ workshop requires at least 15000m³/h handling capacity, matching a 7.5kW or higher motor).
Environmental adaptability: In places with a lot of dust, motors with good sealing properties (such as three-phase asynchronous motors with dust covers) are preferred; in humid or corrosive environments, stainless steel housings or anti-corrosion coating motors are required.
Energy efficiency and cost balance: BLDC motors have high initial investment but long-term energy saving (annual electricity bills can be saved by more than 30%), and are suitable for factories with long-term operation; for short-term use or limited budgets, cost-effective AC asynchronous motors can be selected.
Reliability and after-sales: Motors with overheating, overcurrent, and stall protection functions are preferred, and the brand needs to provide fast after-sales support to reduce downtime affecting production.