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Fan motor braking device and control method thereof

The technology of a fan motor and brake device is applied in brake protection. It can solve the problems that the fan motor cannot dissipate heat, the fan motor reverses, and affects the operation.

Active Publication Date: 2020-02-14
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the return air around the fan motor prevents the fan motor from starting smoothly, or the fan motor reverses due to the return air, or the ambient temperature is too high, causing the fan motor to fail to dissipate heat and affect the operation, etc.

Method used

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  • Fan motor braking device and control method thereof
  • Fan motor braking device and control method thereof
  • Fan motor braking device and control method thereof

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Embodiment Construction

[0049] Embodiments or examples illustrated in the accompanying drawings of the present disclosure will be described as follows. The scope of the present disclosure is not limited thereto. Those skilled in the art should be able to understand that some changes, substitutions and substitutions can be made without departing from the spirit and structure of the present disclosure. In the embodiments of the present disclosure, element symbols may be used repeatedly, and various embodiments of the present disclosure may share the same element symbols, but the characteristic elements used in one embodiment are not necessarily used in another embodiment.

[0050] The fan motor braking device of the present invention detects the current state of the fan through the signal pin of the motor driving integrated circuit to determine whether to activate the braking function to protect the fan motor. The situations where the motor driver IC activates the brake function include when the fan i...

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Abstract

A fan motor braking apparatus includes a fan motor, a conversion circuit and a motor driver circuit. The conversion circuit is respectively and electrically connected to the fan motor and the motor driver circuit. The conversion circuit includes bridge structures. After the fan motor starts operating, the motor driver circuit receives at least one fan status signal and determines whether the fan motor braking apparatus enters a braking status or not according to the at least one fan status signal. When the fan motor braking apparatus enters the braking status, the motor driver circuit outputs a braking control signal to the conversion circuit so that the bridge structures of the conversion circuit generate a brake effect on fan motor, wherein the at least one fan status signal includes an external speed-control signal and a transition voltage signal of the fan motor.

Description

technical field [0001] The invention relates to a brake device for a fan motor, in particular to brake protection for a fan in a locked state or a low-speed mode. Background technique [0002] In the application of the fan motor, the fan motor may be affected by the surrounding environment to affect the operation of the fan motor. For example, the return air around the fan motor prevents the fan motor from starting smoothly, or the fan motor reverses due to the return air, or the fan motor cannot dissipate heat due to overheating of the ambient temperature, which affects the operation and so on. In view of this, the present invention proposes a fan motor braking device and a control method thereof. Contents of the invention [0003] An embodiment of the invention provides a fan motor braking device. The fan motor braking device includes a fan motor, a conversion circuit and a motor driving integrated circuit. The conversion circuit is electrically connected to the fan m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/18
CPCH02P3/18F04D27/004F05D2260/903H02P6/085H02P6/24H02P27/08Y02B30/70F04D25/06H02P6/16
Inventor 曾伟硕吴家丰卓义杰赵韵华陈柏村
Owner DELTA ELECTRONICS INC