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Control circuit and method of electric fan

A control circuit and electric fan technology, which is applied in pump control, non-variable pumps, pump devices, etc., can solve the problems of complex circuit structure of the positioning system, low energy efficiency of electric fans, and abnormal noise from the shaking head mechanism. Improve energy efficiency utilization, low cost, and avoid the effect of abnormal sound

Pending Publication Date: 2022-02-18
GD MIDEA ENVIRONMENT APPLIANCES MFG
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Problems solved by technology

The positioning system in the related art has the following disadvantages: 1) Since Hall sensors and magnets are provided, the circuit structure of the positioning system will be more complicated, resulting in relatively high cost; 2) the electric fan should realize 30, 60, 90, For 120-degree rotation at equal angles, it is necessary to reset the initial position (0 degrees) first. During the reset process, the oscillating mechanism needs different reset times in different positions, and the longest may need to be blocked for 15 seconds, which will cause the electric fan to The energy efficiency utilization rate is low; the locked-rotor will further increase the load on the gears. If the locked-rotor is locked for a long time, it will easily cause the abnormal sound of the shaking head mechanism

Method used

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  • Control circuit and method of electric fan
  • Control circuit and method of electric fan
  • Control circuit and method of electric fan

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution of the application will be further elaborated below in conjunction with the accompanying drawings and embodiments. The described embodiments should not be considered as limiting the application. All other embodiments obtained under the premise of no creative work belong to the scope of protection of this application.

[0029] In the following description, references to "some embodiments" describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or a different subset of all possible embodiments, and Can be combined with each other without conflict.

[0030] If there is a similar description of "first / second" in the application documents, add the following explanation. In the following description, the terms "first\second\third" are only used to distinguish similar objects and do not mean Regarding ...

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Abstract

The embodiment of the invention discloses a control circuit and method of an electric fan, the control circuit of the electric fan comprises a controller, an N-phase stepping motor and a main control circuit, the main control circuit comprises N control modules, and each control module comprises a driving tube, a protection resistor and a voltage division circuit; a collector electrode of the driving tube and a voltage input end of the voltage division circuit are jointly connected with an output end of a one-phase motor winding of the N-phase stepping motor, an emitting electrode of the driving tube and a grounding end of the voltage division circuit are grounded, and a base electrode of the driving tube is connected with one end of the protection resistor. And the other end of the protection resistor and the voltage output end of the voltage division circuit are jointly connected with one connecting end of the controller.

Description

technical field [0001] The present application relates to the technical field of home appliances, in particular to a control circuit and method for an electric fan. Background technique [0002] Electric fans are commonly used electrical appliances in summer. Electric fans generally include a positioning system, an oscillating mechanism, and a limit device. The limit device is used to limit the shaking head range of the shaking head mechanism. The positioning system can realize the positioning when the shaking head mechanism rotates in different angle ranges. ), the oscillating mechanism is turned back by resetting. [0003] In addition to the controller, the positioning system in the related art generally includes Hall sensors, magnets and the like. The positioning system in the related art has the following disadvantages: 1) Since Hall sensors and magnets are provided, the circuit structure of the positioning system will be more complicated, resulting in relatively high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D25/10
CPCF04D27/00F04D27/001F04D25/105
Inventor 郭新生
Owner GD MIDEA ENVIRONMENT APPLIANCES MFG
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