Constant air flow control method and device for air conditioner indoor unit and air conditioner indoor unit

Abstract

The invention discloses a constant air flow control method for an air conditioner indoor unit. The constant air flow control method comprises the following steps that real-time motor power is obtained; the motor power needs to be corrected by considering the influence of the input voltage on the inverter efficiency and the motor efficiency so as to obtain a new power value, the inverter consuming power and the motor loss part are eliminated from the new power value, and power for acting is remained; and at the motor rotating speed corresponding to the correction power value of a motor, the power difference between the correction power value and the preset power standard value of the motor and a target rotating speed needed when the motor reaches the preset constant air flow are calculated, and the motor is controlled to operate at the target rotating speed. The invention further discloses a constant air flow control device for the air conditioner indoor unit and the air conditioner indoor unit. The control of the constant air flow of the air conditioner indoor unit is realized by adopting a model formula according to change in air resistance affecting the power, and moreover, the constant air flow is not affected by network voltage factors, so that the stable cooling or heating effect of an air conditioner is ensured.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a constant air volume control method and device for an air conditioner indoor unit and an air conditioner indoor unit with the device. Background technique [0002] Generally, when using an air conditioner for cooling or heating, what is most needed is the constant control of the air volume of the indoor unit. If the air volume is too small or not constant, it will cause the cooling and heating to fail, which will lead to the cooling and heating of the air conditioner. The thermal effect is poor. At present, the indoor units of air conditioners all use constant speed to control the air volume. Although in theory, the constant speed corresponds to the constant air volume, but in fact, the air conditioner will be affected by various factors during the use of the air conditioner. not constant. [0003] There are many factors that affect the air volume of the indoor unit, including:...

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a constant air volume control method and device for an air conditioner indoor unit and an air conditioner indoor unit, aiming to solve the technical problem that the existing technology cannot accurately detect the air resistance of the air conditioner and realize the constant air volume control

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