EnglishVacuum cleaner motors are responsible for working the fan that vacuums up dust particles and dirt. They operate on AC and are essential for the normal working of most electrical appliances.
Vacuum AC motors rotate a motor fan to create vacuum pressure and suction in commercial canister vacuums, sprayers and foggers, and central vacuum systems.
Suction
Vacuum cleaner motors create suction based on the fact that air flows from areas of higher pressure into those of lower pressure. It is the difference in pressure between these two regions that attracts and propels dust, lint and other debris into a bag or reservoir for removal and exhaust back to the room.
When 120 volts of alternating current is applied to a motor, the fan or fans spin and create a partial vacuum (or region of low pressure) that draws air into the motor through an inlet port. This air then carries the debris in a hose and through a bag or filter system before being exhausted out of the exhaust port.
Various specifications for motor performance are often quoted including amps, water lift and air watts. These specifications are useful but only give us part of the picture. The specification that is most important for comparing the cleaning ability of one motor with another is vacuum airflow, measured in cubic feet per minute.
Power
The motor generates the negative pressure, or suction, that pulls dirt and debris into the vacuum cleaner for processing and disposal. Powerful motors create greater vacuum suction, airflow and cleaning ability.
Vacuum motors are rated by their input power in watts. Although this specification does not directly correlate to the performance of the entire product, it remains a valid comparison tool.
Unlike designs based on the regulation of torque or motor speed, the Qorvo-powered design uses internal power level data to quickly respond to all factors that affect the motor’s performance. The result is a powerful motor that maintains constant rpm through varying conditions without the need for expensive and failure-prone Hall sensors.
A significant amount of energy is dissipated in a vacuum motor as heat, so many are designed with a thermal cut off device that disconnects the motor when the operating temperature exceeds a safe limit. This allows the motor to cool down and protect itself against excessive heat, prolonging its lifecycle.
Efficiency
The vacuum cleaner’s motor creates suction and airflow to draw in dust from the floor and carry it away. The motor then pushes the debris into a dust bag or single or multi-cyclone filter system to retain it until you empty the vacuum cleaner’s container.
Vacuum rated linear motors can be powered with lower voltage than AC induction designs, reducing electricity consumption and cost of ownership. Additionally, our design’s ironless magnets reduce outgassing making the motor maintenance free.
The most important factor in a vacuum cleaner’s ability to pick up debris is the suction power, measured in inches of water lift and cubic feet per minute (CFM) of airflow. Airflow takes into account the motor’s power to lift the debris as well as its resistance through the bag or filter systems. This is a more accurate measurement of a vacuum cleaner’s cleaning ability than air watts, which only considers the motor output.
Noise
A vacuum motor’s noise can impact the user experience and create a negative perception of a product. It can interfere with speech (such as a conversation, teacher instruction or media playback), disturb sleep and cause annoyance. It can also have an impact on the consumer’s purchase decision and reduce a product’s perceived quality.
Noise can also occur in the form of vibration. A vibrating motor is a sign that something is wrong with the motor and should be investigated immediately.
A thermal cut off activates when the motor overheats and stops the engine from further damage. This gives the operator time to empty the dust bag, clean the filter and check for blockages in the floor tool, wand or bent hand piece. It may also indicate that the motor brushes are damaged which is an easy fix for most models. This can be done by turning off the machine, unplugging it and checking the brushes for signs of wear.
