Single phase alternating current voltage adjustment speed change fan
A variable-speed fan and single-phase AC technology, which is applied in the direction of AC motor control, electrical components, control systems, etc., to achieve the effects of energy saving, low cost, and simple structure
Inactive Publication Date: 2014-02-05
青岛派如环境科技有限公司
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Problems solved by technology
[0003]The present invention is to solve the problem of using frequency converter to adjust the variable speed of the fan, which has high cost and interferes with the operation of other online equipment. fan
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[0009] The present invention will be further described below in conjunction with the accompanying drawings.
[0010] As shown in the figure, a thyristor 3 is connected in series on the motor power input terminal 2 of the motor 1 . The voltage of the blower motor 1 is adjusted by the thyristor 3 to change the speed of the blower.
[0011]
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A single phase alternating current voltage adjustment speed change fan is characterized in that thyristors are connected to the power supply input end of a motor in series. The single phase alternating current voltage adjustment speed change fan solves the problems that when a frequency converter is utilized to adjust speed change of the fan, cost is high and operation of other online equipment is interfered, and the single phase alternating current voltage adjustment speed change fan is widely applied to the situation where the power is below 1KW.
Description
technical field [0001] The invention relates to the field of home appliances, in particular to a single-phase AC fan that changes the motor speed by adjusting the voltage with a thyristor. Background technique [0002] At present, the single-phase AC fans used in the society all connect the fan motor with the frequency converter, and realize the variable speed of the fan by changing the input frequency. The disadvantage is that the purchase cost of the frequency converter is high, and the harmonics generated will pollute the power grid and interfere with the operation of other online equipment; the output PWM wave will cause additional heating of the motor and cable. Contents of the invention [0003] In order to solve the problem of high cost of variable speed adjustment of the fan by using a frequency converter and interference with the operation of other online equipment, the invention designs a fan whose speed is variable through voltage regulation of a thyristor. ...
Claims
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IPC IPC(8): H02P25/04
Inventor 宋修瑜韩爽慧沈崇龙
Owner 青岛派如环境科技有限公司
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