Air conditioner and control method thereof
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Solution Overview
Problem
Existing air conditioner temperature sensors experience measurement deviations at low ambient temperatures, leading to inaccurate malfunction determinations and potential misjudgment of sensor functionality, affecting the operation and reliability of the air conditioner.
Innovation Solution
The air conditioner determines the measurement deviation of temperature sensors and only assesses their functionality within a relevant condition where the deviation does not affect measurement, using a controller to compare ambient temperatures with a preset reference temperature to accurately determine if the sensor is within its allowable measurement interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If temperature sensors are used to detect ambient temperature in low temperature environments, then the air conditioner can operate in cold conditions, but the measurement precision deteriorates due to measurement deviations at low temperatures
Solution Approach 1:
The system performs preliminary detection of ambient temperature during compressor standby state before actual operation. This preliminary measurement allows the system to assess whether the temperature sensor is functioning properly before making operational decisions, preventing misjudgments during actual cooling/heating operations in cold environments.
Solution Approach 2:
The controller continuously monitors the temperature sensor readings and compares them against expected values based on operational state and environmental conditions. When the detected temperature falls outside the allowable measurement interval or shows abnormal deviations, the system triggers protective actions such as stopping the compressor or adjusting operation mode, creating a feedback loop that maintains system reliability despite measurement challenges in cold conditions.
2Productivity
If the air conditioner operates without accurate sensor malfunction detection, then the operation continues uninterrupted, but the reliability deteriorates due to potential misjudgment of sensor functionality
Solution Approach 1:
The system performs preliminary detection of ambient temperature during compressor standby state before actual operation. This preliminary measurement allows the system to assess whether the temperature sensor is functioning properly before making operational decisions, preventing misjudgments during actual cooling/heating operations in cold environments.
Solution Approach 2:
The controller continuously monitors the temperature sensor readings and compares them against expected values based on operational state and environmental conditions. When the detected temperature falls outside the allowable measurement interval or shows abnormal deviations, the system triggers protective actions such as stopping the compressor or adjusting operation mode, creating a feedback loop that maintains system reliability despite measurement challenges in cold conditions.
Data Source
AI summary
An air conditioner includes a plurality of temperature sensors, a temperature sensor to-be-detected, and a controller. The plurality of temperature sensors include a first temperature sensor, and the first temperature sensor is configured to detect an ambient temperature in a case where a compressor is in a standby state. The temperature sensor to-be-detected is any of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state. The controller is configured to: obtain a first temperature; obtain a second temperature; and determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than a first threshold or greater than a second threshold in a case where the compressor is in the running state.