Air conditioner filter screen dirty blockage situation detection and air volume control method

Abstract

The invention provides an air conditioner filter screen dirty blockage situation detection and air volume control method, and belongs to the field of air conditioner indoor unit filter screen dirty plug detection and air volume control. According to the invention, the problem that an existing indoor unit filter screen dirty blockage situation detection is inaccurate, and constant air volume judgment is inaccurate are solved. the technical scheme is as follows, the running parameters of the motor of the air conditioner indoor unit at different running speeds of the fan in the factory debuggingprocess are obtained, and a running power standard value is calculated, and the standard parameter value is recorded as a standard parameter value; in the use process of the air conditioner, running parameters of the motor of the air conditioner indoor unit are acquired in real time, and corresponding real-time running power values are calculated; the running power standard value and the real-timerunning power value are compared; and if the real-time running power value is not equal to the running power standard value, the rotating speed of the fan is increased or decreased until the real-time running power value reaches the operating power standard value, and when the rotating speed of the fan reaches a set value, and the real-time running power value is smaller than the operating powerstandard value, the control unit sends out a command which needs to be cleaned by the filter screen.

Description

technical field [0001] The invention relates to an air conditioner control technology, in particular to a technology for detection of dirty and clogged air conditioner filter screens and air volume control. Background technique [0002] At present, the indoor units of air conditioners are equipped with filter screens, and the dust is deposited on the filter screens after being filtered. Users need to clean them regularly, otherwise bacteria will easily breed and cause secondary pollution, and dust will affect the air supply volume and air supply distance of the indoor units. Thus affecting the cooling and heating effect of the air conditioner. At the same time, the heat exchanger of the indoor unit is also prone to dust collection, and the dust on the heat exchanger will also affect the air supply volume of the indoor unit, thereby affecting the cooling and heating effects of the air conditioner. [0003] In the patent application with the application number CN104990202A, a...

AI Technical Summary

Problems solved by technology

[0007] At present, most of the published patented technologies use the detection of the current change of the fan motor to determine the degree of dirtyness of the filter screen, which is not accurate in the actual work of the air conditioner. When the power supply voltage of the default air conditioner is the standard value and In the case of no change, the current reduction is detected, and the power reduction result can be obtained from the power calculation formula, but the actual air conditioner supply voltage will be generated due to the pressure loss of the power supply circuit, excessive grid load, etc. + 20% to -10% fluctuation, in this case, only detecting the change of current cannot accurately reflect the change of the actual operating power of the motor, and false alarms or excessive non-reporting may occur