Single-phase fan through adoption of linear Hall device induction leakage flux
A linear Hall and Hall sensor technology, applied in the direction of single motor speed/torque control, electromechanical devices, electrical components, etc., can solve the problems of large motor current, waste of operator time, burning out the motor, etc., and achieve power consumption Low, good hardware protection, low noise effect
Inactive Publication Date: 2018-11-09
GUIZHOU AEROSPACE LINQUAN MOTOR CO LTD
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Problems solved by technology
[0002] At present, when the fan is working for a long time, it often has a stall failure during its working process. At this time, if the fault is manually eliminated after the shutdown, it will greatly waste the time of the operator, but if it is left If you let it restart by itself, the current inside the motor will be too large, which will eventually cause the motor to burn out. Therefore, it is necessary to provide a fan that can restart itself, which can form a continuous electromagnetic torque when it stops. Realize the automatic restart of the fan, so as to ensure the long-term operation of the fan
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[0021] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0022] like Figure 1-5 As shown, a single-phase fan using a linear Hall device to induce magnetic flux leakage includes a stator 1, a printed circuit board 2 and an outer rotor 3, wherein the printed circuit board 2 is circular, and the stator 1 is fixedly installed on the printed circuit board. In the middle of the board 2, the outer rotor 3 is set on the stator 1, and the circuit printed board 2 is provided with a Hall sensor 21; on the vertical line.
[0023] Further, the stator 1 is provided with a pole shoe 12, and the pole shoe 12 is composed of an arc outer contour whose center does not coincide with the stator 1 center and an arc passing through the stator 1 inner circle center.
[0024] Further, the distance between the Hall sensor 21 and the outer edge of the stator 1 is 5-10mm.
[0025] Further, the center of the out...
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A single-phase fan through adoption of a linear Hall device induction leakage flux comprises a stator, a circuit printed board and an outer rotor, the circuit printed board is provided with a Hall sensor; and the Hall sensor is arranged at the outer edge end of the stator and located on the perpendicular bisector of the center of the circuit printed board. The fan body is provided with uneven airgap structures so as to solve the problem that the single-phase fan has dead points. The circuit printed board of the single-phase fan is provided with a linear Hall element configured to induct the leakage flux at the end face of the outer rotor magnetic steel so as to accurately obtain the position signals of the fan rotor, a monolithic digital integrated circuit is employed to receive the linear Hall position difference signals and drive the internal power circuit to work after transmitting the difference signals into a main control chip for amplification processing so as to ensure the reliable commutation of the fan winding, have functions of high efficiency, low power consumption, low noise, built-in locking and self-restarting and provide good hardware guarantee for the miniaturization of the fan.
Description
technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a single-phase fan using a linear Hall device to induce magnetic flux leakage. Background technique [0002] At present, when the fan is working for a long time, it often has a stall failure during its working process. At this time, if the fault is manually eliminated after the shutdown, it will greatly waste the time of the operator, but if it is left If you let it restart by itself, the current inside the motor will be too large, which will eventually cause the motor to burn out. Therefore, it is necessary to provide a fan that can restart itself, which can form a continuous electromagnetic torque when it stops. Realize the automatic restart of the fan, so as to ensure the long-term operation of the fan. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a single-phase fan using a linear Hall de...
Claims
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IPC IPC(8): H02K29/08H02K1/14H02K11/00H02P6/08H02P6/16H02H7/085
Inventor 陈刚
Owner GUIZHOU AEROSPACE LINQUAN MOTOR CO LTD