Fan

Abstract

The invention provides a fan. The fan comprises a motor, a first rotating shaft, a second rotating shaft, a first fan blade and a second fan blade; the motor comprises a stator, a first rotor and a second rotor which are mutually nested and can mutually rotate, and the first rotor and the second rotor mutually and independently rotate; the stator comprises a stator iron core and a stator winding wound on the stator iron core, and the first rotor and the second rotor are used for driving the first rotating shaft provided with the first fan blade and the second rotating shaft provided with the second fan blade to concentrically rotate correspondingly; and particularly, the first rotor is a reluctance rotor, the second rotor is a permanent magnet rotor, and the stator, the reluctance rotor and the permanent magnet rotor are sequentially nested from inside to outside or from outside to inside. According to the fan provided by the invention, dual-shaft dual-power rotation is achieved in themodes without mechanical differential speed and separation and reunion, the system integration degree is high, the power density is large, energy consumption is low, reliability is high, and noise issmall.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a fan. Background technique [0002] Fans in the related art are often used in fan coil units, air conditioners, heaters, cooling fans, centrifuges, wind power generation, range hoods, blowers, air purifiers, etc., and their structures include fan blades and motors. During use, they are found as follows Disadvantages: The dual-shaft technology in the existing fan actually consists of the shaft of a single motor protruding from both ends to form shafts on both sides, but a single motor can only drive the fan blades to rotate at the same speed or in the same direction, and cannot realize dual-axis in the true sense. Shaft dual-power or dual-degree-of-freedom control; the dual-power or multi-power technology in the existing fan is actually two or more motors outputting double or multiple speeds through axial series, which increases the axial length of the motor, Weight...

AI Technical Summary

Problems solved by technology

[0002] Fans in the related art are often used in fan coil units, air conditioners, heaters, cooling fans, centrifuges, wind power generation, range hoods, blowers, air purifiers, etc., and their structures include fan blades and motors. During use, they are found as follows Disadvantages: The dual-shaft technology in the existing fan actually consists of the shaft of a single motor protruding from both ends to form shafts on both sides, but a single motor can only drive the fan blades to rotate at the same speed or in the same direction, and cannot realize dual-axis in the true sense. Shaft dual-power or dual-degree-of-freedom control; the dual-power or multi-power technology in the existing fan is actually two or more motors outputting double or multiple speeds through axial series, which increases the axial length of the motor, Weight and cost; for some applications, the speed of a single fan blade of the fan is required to reach 1200rpm, the performance requirements of the motor are relatively strict, and the cost is high. The motor is in a high-load working state for a long time, which will affect its service life and structural stability. certain damage

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