Rotating speed control method of air supply motor, controller and air conditioner

Abstract

The invention discloses a rotating speed control method of an air supply motor, a controller and an air conditioner. The method comprises the following steps: a first temperature of a heat exchanger copper pipe of an air conditioner indoor unit, an indoor / outdoor door temperature and an indoor / outdoor humidity are obtained; based on the indoor / outdoor temperature, the indoor / outdoor humidity and a present air level of the air supply motor of the air conditioner indoor unit, a second temperature of the heat exchanger copper pipe is determined through a preset corresponding relation among the temperature of the heat exchanger copper pipe, the air level of the air supply motor, the indoor / outdoor temperature and the indoor / outdoor humidity; and the rotating speed of the air supply motor of the air conditioner indoor unit is controlled based on the first temperature and the second temperature of the heat exchanger copper pipe. As the temperatures of the heat exchanger copper pipe corresponding to the indoor / outdoor temperature and humidity are determined, and the rotating speed of the air supply motor is controlled based on the temperatures and actual temperature of the heat exchanger copper pipe, the method can simply realize control of air volume of the air conditioner in a wider static pressure range, guarantees the air conditioner to automatically adjust the air volume under different mounting environments, and improves the room comfort.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling the speed of a blower motor, a controller and an air conditioner. Background technique [0002] An air conditioner is an air conditioner, also referred to simply as an air conditioner, which is used to adjust and control parameters such as temperature, humidity, and cleanliness of indoor ambient air. An air conditioner usually consists of an indoor unit and an outdoor unit. [0003] At present, ducted air conditioners (referred to as ducted air conditioners) are mainly used in the field of building engineering. Due to differences in installation environments, the lengths of installed ducts usually vary greatly, that is, there are different static pressure requirements. If the static pressure varies greatly, and the speed of the air supply motor in the indoor unit cannot be adjusted accordingly, the air volume at the air outlet will deviate from ...

AI Technical Summary

Problems solved by technology

If the static pressure varies greatly, and the speed of the air supply motor in the indoor unit cannot be adjusted accordingly, the air volume at the air outlet will deviate from the design air volume, which will affect the comfort of the room

In addition, if the air duct machine has been used for a long time, if it is not cleaned, a lot of dust will adhere to the fins of the air duct machine and the return air filter, which will also lead to changes in the overall static pressure of the air duct machine. If the speed of the air supply motor cannot be adjusted according to the load ( For example, the length of the air duct, the dust attached to the fins and the return air filter, etc. (factors that have resistance to the air outlet) automatically adjust, which will also cause the air volume at the air outlet to deviate from the design value

[0004] The traditional air duct machine is equipped with several static pressure dials, which correspond to different speeds of the air supply motor. After the air duct machine is installed, the installer adjusts the air duct machine to the corresponding static pressure dial according to the length of the air duct. To a certain extent, it solves the static pressure effect caused by the different lengths of the air duct, but the control accuracy of the static pressure dial is poor, and it cannot be adjusted adaptively. Once the static pressure dial is fixed, the speed of the air supply motor will also be fixed. , unable to take into account the situation that some air outlets are closed

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