Method and device for controlling an air conditioner
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing air conditioners struggle to maintain both temperature and humidity at comfortable levels, leading to user discomfort due to fluctuations in humidity levels, especially when the actual room temperature deviates from the set temperature.
Innovation Solution
A method and device for controlling an air conditioner that adjusts the operation of components like the fan and compressor based on temperature and humidity deviations, using strategies to switch between different rotational speeds and frequencies to achieve a target comfortable humidity range corresponding to the set temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the compressor operates at high frequency to cool the room quickly, then the temperature control speed is improved, but the coil temperature becomes too low causing excessive condensation and overly dry air
Solution Approach 1:
The patent applies dynamics by making the fan speed adjustable based on operating conditions. The control method dynamically switches between high-speed and low-speed modes: high-speed mode for rapid temperature adjustment, and low-speed mode for maintaining temperature while preventing excessive condensation. This dynamic adjustment resolves the contradiction between fast cooling and humidity control.
Solution Approach 2:
The patent changes the fan speed parameter to resolve the contradiction. By switching fan speed between high and low states, the system adjusts the air flow rate across the evaporator coil, thereby controlling the coil temperature and condensation rate. This parameter change allows the system to prevent overly dry air while maintaining effective temperature control.
2Loss of energy
If the compressor operates at low frequency to maintain temperature near the set point, then energy consumption is reduced, but the coil temperature becomes too high preventing effective dehumidification
Solution Approach 1:
The patent applies dynamics by switching fan speed based on the temperature deviation from the set point. When the room temperature is close to the set point, the system uses low-speed fan mode to maintain energy efficiency. When dehumidification is needed, it switches to high-speed mode to increase air flow and enable effective moisture removal from the air.
Solution Approach 2:
The patent changes the fan speed parameter to resolve the contradiction between energy saving and dehumidification. By adjusting the fan speed parameter, the system controls the air flow rate through the evaporator, enabling it to achieve both low-energy operation and effective dehumidification when conditions require it.
3Stability of the object's composition
If the fan operates at high speed to increase air circulation, then temperature distribution is improved, but the coil temperature drops causing excessive condensation
Solution Approach 1:
The patent applies dynamics by making fan speed conditional rather than constant. The control method dynamically adjusts fan speed based on the temperature deviation from the set point and humidity conditions. This dynamic adjustment ensures good temperature distribution when needed while preventing excessive condensation by reducing fan speed when the coil temperature approaches the dew point.
4Object-affected harmful factors
If the fan operates at low speed to reduce condensation, then humidity control is improved, but temperature distribution becomes uneven
Solution Approach 1:
The patent applies dynamics by switching fan speed based on real-time temperature and humidity conditions. The system uses low-speed mode to prevent condensation and control humidity, and high-speed mode to improve temperature distribution when the temperature deviation exceeds the threshold. This dynamic switching resolves the contradiction between humidity control and temperature uniformity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively maintains both temperature and humidity within specified requirements, enhancing user comfort by ensuring the air conditioner operates efficiently to meet both temperature and humidity targets, improving the accuracy and efficiency of the control process.
Implementation Method 1
the coil temperature of an indoor unit of the air conditioner is relatively low, generally lower than a dew-point temperature of an air, and thus water vapor in the air is continuously condensed
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to the technical field of air conditioners, and provides a self-cleaning control method and apparatus for an air conditioner. The method comprises: obtaining current temperature and humidity values of an active area of the air conditioner; if a temperature deviation between the current temperature value in the current temperature and humidity values and a set temperature value is less than or equal to a set value, and the current humidity value in the current temperature and humidity values is not within a target comfortable humidity range corresponding to the set temperature value, switching a current running mode of at least one device comprising a draught fan of the air conditioner till the current temperature and humidity values reach the set requirement, wherein the humidity parameter comprises: a humidity deviation between the obtained current humidity value and the preset target humidity, or a coil temperature deviation between the obtained current air conditioner coil temperature value and the preset target coil temperature value. In this way, the temperature-humidity double-control of the air conditioner is implemented by controlling at least one device comprising the draught fan.