Dust collector

Abstract

The invention discloses a dust collector which comprises a shell and a dust collection head. Two ends of the shell are respectively connected with a motor and the dust collection head; the output endof the motor is connected with a turbine. The motor comprises a rotor system and a motor assembly, the rotor system comprises a rotating shaft, and a pair of parallel bearings is arranged on the rotating shaft and comprises a rotating shaft bearing and a stator bearing; the rotating shaft bearing is a contact type bearing, sleeves the rotating shaft and is in close fit with the rotating shaft; thestator bearing is a non-contact bearing, the stator bearing sleeves the rotating shaft bearing, a gap is reserved between the inner wall of the stator bearing and the outer wall of the rotating shaftbearing, and the stator bearing is fixed on the stator; the motor assembly comprises a stator magnetic pole and a coil which sleeve the rotating shaft, and a magnetic core is arranged on a shaft section, located in the stator magnetic pole and the coil, of the rotating shaft; a filtering device is arranged in the shell and divides the shell into two parts, the part close to the parallel bearing motor contains the turbine, and the part close to the dust collection head is a dust collection cavity. The dust collector is large in air suction amount, cleaner in sweeping and low in cost.

Description

technical field [0001] The invention relates to the technical field of vacuum cleaners, in particular to a vacuum cleaner. Background technique [0002] Vacuum cleaner motors are required to have the characteristics of small size and high speed. At present, most of the main vacuum cleaner products at home and abroad use series motors or brushed DC motors. In order to achieve miniaturization and weight reduction while satisfying greater suction effects, it is often necessary to increase the speed. However, this type of motor is generally composed of a casing, permanent magnet steel, carbon brushes, rotors and rotor windings. During operation, high-speed friction will be generated between the carbon brushes and the commutator while the rotor windings are constantly switching currents. As a result, sparks are easily generated between the carbon brush and the commutator. If the speed is too high, it will cause serious wear between the carbon brush and the commutator, which will...

AI Technical Summary

Problems solved by technology

However, this type of motor is generally composed of a casing, permanent magnet steel, carbon brushes, rotors and rotor windings. During operation, high-speed friction will be generated between the carbon brushes and the commutator while the rotor windings are constantly switching currents. Sparks are easily generated between the carbon brush and the commutator. If the speed is too high, it will cause serious wear between the carbon brush and the commutator, which will affect the product life and even burn out quickly

If a conventional brushless motor is used as a vacuum cleaner motor, at high speeds, its bearings will lose energy and increase in temperature due to mechanical friction, resulting in damage to the bearings, making maintenance and replacement more frequent, making the existing brushless motors unbearable The speed is too high, so that the maximum speed can only reach about 80,000RPM, and the high performance of the ultra-high speed of 150,000RPM cannot be achieved, and the air suction is small

Motors using magnetic levitation bearings have problems with high costs, which in turn increases the cost of vacuum cleaners

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