Refrigerator and control method therefor
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Solution Overview
Problem
Conventional refrigerators with integrated dairy product makers lack user-friendly control mechanisms and error detection capabilities, making it difficult to manage dairy product production and storage effectively, especially when component errors occur.
Innovation Solution
A refrigerator system with a control panel that allows users to easily operate and monitor the dairy product maker, featuring distinct fermentation modes, error detection for components like the heater, fan, and temperature sensor, and automatic adjustments to ensure dairy product production despite errors, including temperature control and notification systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dairy product maker is integrated into the refrigerator compartment, then the convenience of storing dairy products directly in the refrigerator is improved, but the control complexity and error detection capability deteriorate
Solution Approach 1:
The control system is segmented into distinct modules: a control panel for user interaction, a controller for logic processing, and separate sensing elements for temperature and component status. This segmentation simplifies the overall control complexity while maintaining integration benefits.
Solution Approach 2:
The system incorporates feedback mechanisms through sensors that monitor temperature and component status, with the controller receiving status signals and adjusting operations accordingly. Error detection feedback allows the system to notify users of component failures while maintaining operational awareness.
2Adaptability or versatility
If multiple fermentation modes are provided, then the versatility of dairy product production is improved, but the control complexity deteriorates
Solution Approach 1:
The control system dynamically adjusts heating and cooling operations based on the selected fermentation mode. The controller modifies temperature profiles, heating duration, and cooling intensity according to different mode requirements, providing versatility without requiring separate dedicated systems for each mode.
Solution Approach 2:
Different fermentation modes are implemented by changing operational parameters such as temperature setpoints, heating time durations, and cooling rates. The controller modifies these parameters based on the selected mode, enabling versatile dairy product production through parameter adjustment rather than structural complexity.
3Reliability
If error detection for components is implemented, then the reliability of dairy product production is improved, but the device complexity deteriorates
Solution Approach 1:
The system performs self-diagnosis through built-in sensors that automatically monitor component status and temperature. The controller independently evaluates sensor readings to detect errors, eliminating the need for external monitoring equipment and reducing overall device complexity while maintaining reliability.
Solution Approach 2:
Manual error checking is replaced with electronic sensing and automated controller logic. Temperature sensors and component status sensors substitute for manual inspection, providing continuous automated monitoring that improves reliability without adding mechanical complexity.
4Productivity
If the heater operation period is extended for second fermentation mode, then the productivity of thick dairy product production is improved, but the energy consumption deteriorates
Solution Approach 1:
The heating operation follows a periodic cycle with distinct phases: an initial heating period to reach fermentation temperature, a sustained fermentation period for thick dairy product production, and a final cooling period. This periodic action optimizes energy usage by concentrating heating during necessary phases and utilizing cooling during other phases.
Solution Approach 2:
The system performs preliminary heating to reach the required fermentation temperature before initiating the extended fermentation process. This preliminary action ensures optimal conditions are established beforehand, allowing the extended fermentation period to proceed efficiently without additional energy input during the fermentation phase itself.
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
Enables users to efficiently control dairy product production and storage by allowing seamless operation and error handling, ensuring continuous dairy product availability and quality regardless of component issues.
Implementation Method 1
turn on the heater to increase the temperature of the dairy product maker to the fermentation start temperature
Implementation Method 2
cool down the container to a preset cooling temperature by turning off the heater and repeatedly turning on and off the fan
Implementation Method 3
the temperature sensor outputs a temperature below a preset first reference temperature
Data Source
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AI summary
Provided is a refrigerator including a refrigerator compartment, a dairy product maker provided inside the refrigerator compartment, a control panel configured to receive a control command for the dairy product maker from a user and display a state of the dairy product maker, and a controller configured to control the dairy product maker based on the control command, wherein the dairy product maker includes a container to store milk or a dairy product, a heater configured to heat the milk stored in the container, a wind-blowing fan configured to supply cool air inside the refrigerator compartment to the container, and a temperature sensor configured to measure a temperature of the dairy product maker, and the controller operates the heater for a preset fermentation period in response to the control command, turns off the heater and turns on the wind-blowing fan to cool down the container after a lapse of the preset fermentation period, and turns off the wind-blowing fan upon completion of cooling down of the container.