Air Conditioner Power-Saving Operation Using Temperature Feedback
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Solution Overview
Problem
Existing air conditioners face challenges in maintaining indoor temperature stability when the indoor space communicates with another space, leading to unnecessary power consumption and inefficient cooling or heating.
Innovation Solution
The air conditioner incorporates a movable vane system that adjusts the direction of air discharge, allowing air to flow along a ceiling for uniform cooling or heating, and can also direct air to specific areas, optimizing energy use based on indoor temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air conditioner continues to operate to bring the indoor temperature to the target value when the indoor space communicates with another space, then the indoor temperature control is maintained, but power is unnecessarily consumed
Solution Approach 1:
The control unit continuously monitors the indoor temperature and compares it with the target value. When the temperature difference exceeds a predetermined threshold, the system automatically adjusts the compressor's operating frequency or shuts it down, preventing unnecessary power consumption while maintaining temperature control reliability.
Solution Approach 2:
The system dynamically adjusts the compressor's operating frequency based on real-time temperature conditions. When communication with another space is detected (temperature difference exceeds threshold), the compressor frequency is reduced or stopped. When the threshold is no longer exceeded, normal operation resumes, optimizing power consumption while maintaining temperature control.
2Speed
If the air conditioner operates at high frequency to cool or heat the indoor space quickly, then the temperature adjustment speed is improved, but power consumption increases
Solution Approach 1:
The control unit operates the compressor in periodic cycles, adjusting the operating frequency based on the temperature difference between the indoor space and target temperature. When the temperature difference is large, the compressor operates at high frequency for rapid adjustment. When the temperature approaches the target value, the frequency is reduced or operation is stopped, reducing power consumption while maintaining fast temperature adjustment capability when needed.
3Device complexity
If the air conditioner operates without detecting communication with other spaces, then the device complexity is reduced, but unnecessary power consumption occurs
Solution Approach 1:
The control unit uses simple temperature feedback from the temperature sensor to detect when the indoor space is communicating with another space. When the temperature difference exceeds the predetermined threshold, the system interprets this as communication with another space and adjusts operation accordingly, preventing unnecessary power consumption without requiring complex communication detection hardware.
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
This solution enables uniform and targeted temperature control within the indoor space, reducing power consumption by adjusting operation modes based on communication with other spaces and optimizing air discharge directions.
Implementation Method 1
high-temperature and high-pressure liquid refrigerant is supplied to the indoor unit from the compressor of the outdoor unit through the heat exchanger of the outdoor unit
Implementation Method 2
As the refrigerant expands and is vaporized in the heat exchanger of the indoor unit, ambient temperature is lowered
Implementation Method 3
air heated by energy, which is released as the high-temperature and high-pressure gaseous refrigerant is liquefied in the heat exchanger of the indoor unit
Implementation Method 4
as a fan of the indoor unit operates, cold air is discharged to the indoor space
Data Source
AI summary
An air conditioner and a method for operating an air conditioner are provided. The air conditioner may include an indoor unit, an indoor temperature sensor configured to detect an indoor temperature in an indoor space in which the indoor unit is disposed, and a controller configured to monitor the indoor temperature using the indoor temperature sensor. If the indoor temperature changes by a first reference temperature or more, the controller may commence a power-saving operation, and if the indoor temperature changes by a second reference temperature or more while the power-saving operation is performed, the controller may stop the power-saving operation.