Constant-air volume control method and device for indoor unit of air conditioner and indoor unit of air conditioner

Abstract

The invention discloses a constant-air volume control method and device for an indoor unit of an air conditioner and the indoor unit of the air conditioner. The constant-air volume control method includes that acquiring the real-time power of a motor of the indoor unit of the air conditioner under a certain rotating speed; in consideration of the influence of the current input voltage of the air conditioner on the motor power, correcting the real-time power of the motor to obtain a new power value; calculating the power difference between the corrected power value of the motor and a preset standard power value under the motor rotating speed corresponding to the corrected power value of the motor; calculating a target rotating speed of the motor needed for arriving at a preset constant air volume according to the power difference, and controlling the motor to run in the target rotating speed. The constant-air volume control method and device for the indoor unit of the air conditioner and the indoor unit of the air conditioner can precisely detect the air resistance and realize the constant air volume control for the indoor unit of the air conditioner, and meanwhile, the influence of the voltage factor of a power grid of the user is avoided, and the stable refrigerating or heating effect of the air conditioner is guaranteed.

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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