VACUUM CLEANER Russian patent published in 2018 - IPC A47L9/28 

FIELD: personal and household goods.

SUBSTANCE: invention relates to household appliances. Vacuum cleaner comprises a motor-fan unit, a regulator for adjusting the power setting of the motor-fan assembly, as well as a processor that is configured to protect the motor-fan assembly from overheating and / or entering a stop mode depending on the comparison of the parameter related to the flow rate, with a threshold value, which is the rotational speed of the motor-fan assembly. Threshold value may depend on the power setting of the motor-fan assembly or the current through the motor-fan assembly. Parameter relating to the flow rate may be a pressure difference between, on the one hand, a position upstream or downstream of the fan motor assembly and, on the other hand, the environment, the pressure difference between the known component, the pressure difference at the motor-fan assembly, and / or, if the threshold value depends on the power setting, the rotation speed of the motor-fan assembly. Processor may be configured to protect the motor-fan assembly by opening the valve upstream of the fan motor assembly and / or by decreasing the rotation speed of the motor-fan assembly.

EFFECT: increased efficiency of protecting the electric motor of the vacuum cleaner from overheating.

6 cl, 10 dwg