Fan start control method and fan

A technology for fan and start-up phase, which is applied to the start-up control method of three-phase fans in the start-up phase and the field of fans, which can solve problems such as wind noise and achieve the effects of saving power, reducing fan speed overshoot, and reducing start-up noise

Active Publication Date: 2018-12-04
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned problems, the object of the present invention is to provide a method for controlling the start-up of a fan and a fan that can effectively reduce the start-up noise, so as to solve the problem of obvious noise in the initial stage of the fan

Method used

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  • Fan start control method and fan
  • Fan start control method and fan
  • Fan start control method and fan

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Embodiment Construction

[0043] The fan start control method and the fan according to the preferred embodiments of the present invention will be described below with reference to the related drawings, wherein the same elements will be described with the same reference symbols.

[0044] Please refer to figure 2 , Figure 3A to Figure 3E , figure 2 It is a schematic block diagram of a fan in a preferred embodiment of the present invention. Figure 3A It is a schematic diagram of the working cycle, noise and rotational speed of the preferred embodiment of the present invention. Figure 3B to Figure 3E for Figure 3A A schematic diagram of the first driving signal S1 having different reduction modes.

[0045] Please refer to figure 2 , the fan 20 includes an impeller 21, a motor 22 and a control circuit 23; wherein the motor 22 is a three-phase motor, and is respectively connected to the impeller 21 and the motor to be electrically connected to the control circuit 23, and drives the impeller accor...

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Abstract

A method for controlling a fan in a fan start-up stage including a first time period and a second time period comprises the following steps of: during the first time period, continuously providing a first driving signal to drive the fan; and during the second time period, continuously providing a second driving signal to drive the fan; wherein, during the first time period the signal value (driving energy) of the first driving signal gradually decreases until being equal to the signal value of the second driving signal, and the signal value of the first driving signal is initially greater than the signal value of the second driving signal. A fan is also disclosed.

Description

technical field [0001] The present invention relates to a start-up control method of a fan and the fan, in particular to a start-up control method of a three-phase fan in the start-up phase and the fan. Background technique [0002] In response to energy-saving requirements, the system of the notebook computer often switches between the sleep mode and the normal mode, so the fan will also frequently stop or restart corresponding to different working modes. However, when the fan restarts from a stopped state, it often produces obvious startup noise. The main reason for the startup noise is that when the fan restarts, it provides a fixed high-energy in the open loop (Open Loop) control stage. The driving signal is used to forcibly start the fan without using any sensor feedback signal to adjust the driving signal. However, the energy of the driving signal will affect the starting noise. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the driving si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P1/16F04D27/00F04D29/66
Inventor 林逸凡唐仲宏刘政杰邱俊隆
Owner DELTA ELECTRONICS INC
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