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Fan, and oscillation control method and oscillation control device for fan

A fan shaking head and control method technology, applied in the control system, AC motor control, electrical components, etc., can solve the problems of electromagnetic noise of the shaking head motor, low efficiency of the shaking head motor, high harmonic components, etc., to reduce electromagnetic noise and improve the performance of the shaking head motor. Efficiency, less external interference effect

Inactive Publication Date: 2015-04-08
GD MIDEA ENVIRONMENT APPLIANCES MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the square wave control method, the harmonic components are high, and the efficiency of the shaking head motor is low. The sudden effect of the voltage or current of the shaking head motor will cause the shaking head motor to generate electromagnetic noise, which will affect the user's use in some occasions.

Method used

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  • Fan, and oscillation control method and oscillation control device for fan
  • Fan, and oscillation control method and oscillation control device for fan
  • Fan, and oscillation control method and oscillation control device for fan

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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PUM

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Abstract

The invention discloses a fan oscillation control method. The control method comprises the following steps: inputting a DC (Direct Current) PWM (Pulse Width Modulation) signal; converting the DC PWM signal into an AC (Alternating Current) sine signal by adopting a sine pulse width modulation method; according to the AC sine signal, driving an oscillation motor of the fan to control the fan to oscillate. According to the fan oscillation control method disclosed by the invention, electromagnetic noise generated by the oscillation motor can be reduced, efficiency of the oscillation motor is improved, and the oscillation motor is interfered by the outside a little. The invention also discloses a fan oscillation control device and a fan with the same.

Description

technical field [0001] The invention relates to the technical field of electric appliances, in particular to a method and device for controlling the head oscillation of a fan, as well as a fan. Background technique [0002] The oscillating motor in the low-voltage DC fan generally uses a low-voltage (24VAC) AC synchronous motor, and the drive circuit uses an H-bridge circuit, such as figure 1 As shown, the H-bridge circuit includes four transistors Q1~Q4, through which the four transistors are turned on or off, the direct current is converted into a 50Hz alternating current, which is used to drive the rotation of the AC synchronous motor M. [0003] Among them, the control hardware principle of AC synchronous motor M is as follows: figure 2 As shown in (1), the drive chip including the H-bridge circuit drives the AC synchronous motor M in a square wave control mode, and its output voltage waveform is as follows figure 2 As shown in (2), the two IO ports of the driver chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08
CPCH02P27/08
Inventor 骆建立李益爱车玉明
Owner GD MIDEA ENVIRONMENT APPLIANCES MFG
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