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Method and device for adjusting the speed of internal fan of air conditioner

An adjustment method and the technology of the internal fan, applied in the direction of machine/engine, mechanical equipment, motor control, etc., can solve the problems of abnormal noise, slow start speed of the internal fan, etc., and achieve fast speed response, small speed fluctuation, and small over-adjustment Effect

Active Publication Date: 2015-12-09
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a method and device for adjusting the speed of the internal fan of an air conditioner, so as to solve the problems of slow start-up speed and abnormal noise during operation of the internal fan of the air conditioner

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  • Method and device for adjusting the speed of internal fan of air conditioner
  • Method and device for adjusting the speed of internal fan of air conditioner
  • Method and device for adjusting the speed of internal fan of air conditioner

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Embodiment Construction

[0041]It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] figure 1 It is a hardware module block diagram of the air conditioner internal fan speed regulation according to the first embodiment of the present invention, as figure 1 As shown, the hardware module for speed regulation of the internal fan includes: a CPU module 20 , a motor module 40 , a rotation speed feedback signal module 60 and a motor drive module 80 .

[0043] Wherein, the CPU module 20 is used to control the motor. By detecting the feedback signal of the motor speed, the motor driving signal is sent through the speed regulating device to drive the motor to work. The motor module 40 is used to drive the indoor fan of the air conditioner and generate a speed feedback signal. T...

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Abstract

The invention discloses a method and a device for adjusting the rotating speed of an inner fan of an air conditioner. The adjusting method is used for adjusting the rotating speed of the inner fan by means of a PI algorithm via a P parameter and an I parameter according to a difference value between the practical rotating speed and the target rotating speed of the inner fan. In the process of adjusting the rotating speed of the inner fan, the method comprises the following steps: detecting the practical rotating speed of the inner fan; calculating the rotating speed difference of the inner fan, wherein the rotating speed difference is the difference between the practical rotating speed and the target rotating speed; correcting the I parameter and / or the P parameter according to the rotating speed difference; and adjusting the rotating speed difference of the inner fan by means of the PI algorithm via a corrected parameter according to the rotating speed difference. Due to the adoption of the method and the device, the rotating speed response of an indoor motor is quick, the static errors and dynamic overshoot are lowered, high anti-interference performance is achieved, the aim of mute drive is fulfilled, and the comfort of the air conditioner is improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for adjusting the rotational speed of an internal fan of an air conditioner. Background technique [0002] At present, the indoor fan blades of air conditioners are mostly driven by PG motors (single-phase asynchronous motors) or built-in DC motors. The motors have a speed feedback device. When adjusting the speed, according to the difference between the speed feedback signal and the target speed, through a simple PI algorithm After calculation, adjust the hysteresis zero-crossing chopping time or PWM duty cycle to achieve the purpose of speed regulation of the internal fan. [0003] In the process of adjusting the speed of the internal fan, the PI adjustment calculation parameters Kp and Ki are fixed, the algorithm has poor applicability and anti-interference performance, and the following four phenomena are prone to occur: [0004] (1) start overshoot; [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00H02P29/00H02P23/00
Inventor 龚辉平陈绍林李文灿卓森庆
Owner GREE ELECTRIC APPLIANCES INC
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