Fan dust removal circuit, fan and electronic product
By designing a simplified fan dust removal circuit, using control chips and mos tubes to achieve forward and reverse of the fan, the problem of complex or ineffective dust removal circuits in the prior art is solved, and effective dust removal and good heat dissipation effect of the fan is achieved.
CN222668449UActive Publication Date: 2025-03-25品岱电子(江苏)股份有限公司
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Patent Information
- Application Number
- CN202421478026.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
Technical Problem
In the prior art, the dust removal circuit is complex or cannot effectively solve the problem of fan dust removal, resulting in poor heat dissipation effect and frequent disassembly equipment is required to remove dust.
Method used
A fan dust removal circuit is designed, and the Mos tube is connected to the FR pin of the control chip, and the capacitor C4 and resistor R6 are connected to the gate of the Mos tube, and the voltage divider resistor R4 is designed to realize the forward and inverse of the fan to remove dust.
Benefits of technology
The dust removal function of the fan is realized, the circuit structure is simplified, the trouble of frequently dismantling the equipment to remove dust, and the good heat dissipation effect is maintained.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a fan dust removal circuit, a fan and an electronic product. The fan comprises a control chip. A U pin, a V pin and a W pin of the control chip are respectively connected with a three-phase winding of a fan motor so as to control the fan to rotate; an FR pin of the control chip is connected with an mos tube, a resistor R3 is connected between a grid electrode of the mos tube and a power supply end Vc, a resistor R6 is connected between the grid electrode of the mos tube and a grounding end GND, and a capacitor C4 is further connected between the grid electrode of the mos tube and the grounding end GND; the source electrode or the drain electrode of the mos tube is connected with the grounding end GND, and a resistor R4 is connected between the source electrode or the drain electrode of the mos tube and the power supply end Vc. After the circuit is powered on, the FR pin controls the fan to rotate forwards, the capacitor C4 is in the charging process, after the capacitor is fully charged, the MOS is started to pull the high level to the low level, the FR pin signal changes to control the fan to rotate reversely, heat dissipation is conducted in the fan forward rotation process, dust of the fan can be removed through reverse rotation, and the dust removal purpose is achieved. The circuit is simple in structure.
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