Constant temperature control method, electric device, and constant temperature wine cabinet
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Solution Overview
Problem
Existing wine cabinets suffer from temperature fluctuations and inability to maintain consistent temperatures, especially at varying ambient conditions, and current constant temperature control methods are time-consuming and resource-intensive.
Innovation Solution
A method to adjust compressor switch-on and switch-off temperatures based on temperature differences, using baseline and actual environmental conditions, and a linear regression equation to maintain consistent compartment temperatures, combined with a damper and heating system for dual-temperature zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single refrigeration function with multiple evaporators and fans is used, then the wine cabinet can cool multiple compartments, but the temperature control becomes unstable and cannot maintain constant temperature under varying ambient conditions
Solution Approach 1:
The patent implements dynamic temperature control by making the switch-on and switch-off temperatures of the compressor variable rather than fixed. The control system dynamically adjusts these temperatures based on the ambient temperature detected by the temperature sensor, allowing the refrigeration system to adapt to varying ambient conditions and maintain stable compartment temperatures.
Solution Approach 2:
The patent employs feedback control by using a temperature sensor to continuously detect the ambient temperature and feed this information back to the control system. The control system then uses this feedback to adjust the compressor's switch-on and switch-off temperatures, creating a closed-loop control system that maintains temperature stability despite external variations.
2Reliability
If the compressor switch-on and switch-off temperatures are adjusted for different ambient temperature ranges, then constant temperature control can be achieved, but extensive testing and verification are required which consumes significant time and resources
Solution Approach 1:
The patent changes the control parameter from fixed temperature thresholds to dynamic temperature thresholds that vary with ambient temperature. Instead of requiring extensive testing of multiple fixed temperature settings, the system uses a single adaptive control strategy where the switch-on and switch-off temperatures are automatically adjusted based on the detected ambient temperature, significantly reducing testing requirements.
Solution Approach 2:
The system performs self-adjustment by automatically modifying its own control parameters (compressor switch-on and switch-off temperatures) based on ambient temperature conditions. This self-service capability eliminates the need for external testing and verification of multiple temperature settings, as the system adapts autonomously to different environmental conditions.
3Device complexity
If the compressor operates at fixed switch-on and switch-off temperatures, then the control system is simple, but the compartment temperature fluctuates significantly especially at lower ambient temperatures
Solution Approach 1:
The control system transitions from static fixed temperature thresholds to dynamic adaptive thresholds. The switch-on and switch-off temperatures are no longer fixed values but dynamically adjusted based on ambient temperature conditions, allowing the system to maintain temperature consistency across different environmental conditions without requiring complex additional hardware.
Solution Approach 2:
The control system achieves multi-functionality by using a single adaptive control mechanism that handles both simple and complex temperature control scenarios. The same control system automatically adjusts its behavior based on ambient temperature, providing reliable temperature control for both high and low ambient conditions without requiring separate control circuits or complex programming.
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
Ensures consistent compartment temperatures by correcting compressor settings and using a damper and heating system, effectively maintaining set temperatures despite environmental variations.
Implementation Method 1
The compressor starts refrigeration when the detected temperature is higher than the set upper limit temperature
Implementation Method 2
combined with a damper and heating system for dual-temperature zones
Data Source
AI summary
A constant temperature control method, an electronic device, and a constant temperature wine cabinet. The method includes obtaining a first temperature difference between the first actual temperature of the compartment and the baseline compartment temperature at a baseline environmental temperature; modifying the switch-on and switch-off temperatures of the compressor to obtain a first revised switch-on temperature and a first revised switch-off temperature based on the first temperature difference; obtaining a second temperature difference between the baseline compartment temperature and the second actual temperature of the compartment at an actual environmental temperature; modifying the first revised switch-on temperature and the first revised switch-off temperature to obtain a second revised switch-on temperature and a second revised switch-off temperature based on the second temperature difference; and controlling the compressor to switch on at the second revised switch-on temperature and switch off at the second revised switch-off temperature.