Air-conditioning device
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Solution Overview
Problem
The existing air-conditioning devices face issues with inaccurate temperature measurement due to the wireless temperature sensor unit being installed in abnormal conditions, leading to suboptimal conditioning of indoor air, which can result in inadequate heating or cooling and potential device overload.
Innovation Solution
The air-conditioning device incorporates a wireless temperature sensor unit with an ambient temperature sensor and a transmitter, along with a receiving section and an abnormal condition determining section, which allows the system to switch to using the suction air temperature sensor's measurement when the wireless sensor is in an abnormal condition, ensuring proper conditioning of the entire indoor space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wireless temperature sensor unit is installed near a person to improve comfort, then the measurement value reflects local ambient temperature well, but the sensor may be installed in abnormal conditions (e.g., near heaters) causing inaccurate temperature measurement
Solution Approach 1:
The system continuously monitors the wireless temperature sensor's signal and compares it with expected temperature ranges. When the sensor detects abnormal conditions (e.g., temperature values outside normal ranges indicating proximity to heaters), the system automatically switches to using the indoor unit's temperature sensor, preventing inaccurate temperature control while maintaining comfort when the wireless sensor is properly positioned.
Solution Approach 2:
The system dynamically selects which temperature sensor to use based on real-time conditions. Instead of relying on a fixed sensor, the controller switches between the wireless temperature sensor and the indoor unit's temperature sensor depending on which one provides accurate readings, adapting to changing installation conditions and environmental factors.
2Adaptability or versatility
If the wireless temperature sensor unit is used to measure temperature at optional locations, then air conditioning can be optimized for specific areas, but the sensor may fail to transmit signals due to dead battery or other issues making the device uncontrollable
Solution Approach 1:
The indoor unit's temperature sensor serves as a backup intermediary for temperature measurement when the wireless sensor fails. The system maintains the capability to control air conditioning by switching to the indoor unit's sensor, ensuring continuous operation even when the wireless sensor's battery dies or transmission fails.
Solution Approach 2:
The system prepares for potential wireless sensor failures by having the indoor unit's temperature sensor ready as a backup. This prior cushioning ensures that if the wireless sensor fails (battery death, transmission issues), the system can immediately switch to the backup sensor without losing control capability or requiring immediate user intervention.
3Ease of operation
If the ambient temperature sensor measurement value is used to control air conditioning operation, then comfort is improved by considering local temperature, but air in the entire indoor space may not be appropriately conditioned when the sensor is in abnormal conditions
Solution Approach 1:
The controller continuously monitors temperature readings from both sensors and switches between them based on which provides more reliable data for overall space conditioning. When the wireless sensor shows abnormal readings (indicating improper installation near heat sources), the system feedback mechanism triggers a switch to the indoor unit's sensor, ensuring accurate overall space temperature control while maintaining comfort when the wireless sensor is properly positioned.
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 ensures that the air-conditioning device can maintain appropriate indoor conditions even when the wireless temperature sensor is in an abnormal state, preventing excessive load on components and ensuring comfort by using the suction air temperature sensor's measurement to control the device.
Implementation Method 1
an ambient temperature sensor (13b) measuring an ambient temperature
Implementation Method 2
a transmitter (13c) transmitting a signal of a measurement value (Tm2) of the ambient temperature sensor (13b) by radio
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An air-conditioning device (10) includes: a suction air temperature sensor (61) provided in an indoor unit (12); a wireless temperature sensor unit (13) separate from the indoor unit (12); an abnormal condition determining section (63b) determining whether or not the wireless temperature sensor unit (13) is in an abnormal condition; an index setting section (63c) setting a temperature index value; and a controller (28, 66) controlling operation of the air-conditioning device (10) based on the set temperature index value. While the abnormal condition determining section (63b) determines that the wireless temperature sensor unit (13) is in the abnormal condition, the index setting section (63c) determines a measurement value (Tm1) of the suction air temperature sensor (61) to be the temperature index value.