Direct-current frequency conversion electric fan

A DC variable frequency, electric fan technology, applied in the direction of AC motor control, electrical components, non-variable-capacity pumps, etc., can solve the problem of insignificant energy-saving effect, and achieve obvious energy-saving effect, continuously adjustable speed, and low energy consumption. Effect

Inactive Publication Date: 2010-11-24
广州遨控电子科技有限公司
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  • Abstract
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Problems solved by technology

Although the speed of electronic speed control can be adjusted continuously in a small range, because the voltage is adjusted by adjusting the AC condu

Method used

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  • Direct-current frequency conversion electric fan
  • Direct-current frequency conversion electric fan
  • Direct-current frequency conversion electric fan

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Embodiment Construction

[0020] The invention can solve the technical shortcomings of the existing electric fan, and can achieve the purpose of greatly saving energy and improving comfort by applying microcomputer and power semiconductor technology. Its basic idea is to apply frequency converter technology to electric fans; and, in order to achieve better energy-saving effects, replace the motor with a three-phase motor.

[0021] This fan is preferably a permanent magnet motor variable frequency electric fan, and its motor can be a three-phase permanent magnet synchronous motor, a three-phase DC brushless motor, etc., commonly known as a DC variable frequency electric fan.

[0022] In order to further understand the basic principle and structure of the present invention, the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0023] see figure 1 , showing the composition of a preferred embodiment of the DC variable frequency electric fan of the p...

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Abstract

The invention discloses a direct-current frequency conversion electric fan. A motor (5) of the electric fan is a three-phase motor; a rectification circuit (1) for converting alternating current into direct current, a filter circuit (3) for realizing the effects of filter smoothing and energy storage of the direct current and an inverter circuit (4) for converting the direct current into the alternating current to realize frequency modulation and voltage regulation are arranged between a commercial power access end and the motor (5), wherein an inverter (4) is also connected with the driving signal end of a microprocessor circuit (6). The direct-current frequency conversion electric fan can save energy substantially and improve the comfort level.

Description

technical field [0001] The invention relates to the field of speed regulation of electric fans, in particular to a DC variable frequency electric fan. Background technique [0002] At present, household electric fans generally use single-phase AC asynchronous motors, and there are usually the following speed regulation methods: [0003] One is reactor speed regulation, by reducing the input voltage of the motor to achieve the purpose of speed regulation. In this way, the speed is adjusted by reducing the input voltage of the fan motor. Since the reduced voltage is consumed on the reactor, the power consumption is large and not energy-saving. [0004] The second is tap speed regulation, which changes the motor speed by changing the running winding of the motor to achieve the purpose of speed regulation. Since tap speed regulation usually adopts three-speed speed regulation, the speed cannot be continuously adjusted, the speed regulation range is limited, and the comfort is ...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D27/00H02P6/08H02P27/08
Inventor 杨卫洲李步云彭达洲林建芬
Owner 广州遨控电子科技有限公司
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