Refrigerator
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Solution Overview
Problem
Refrigerators struggle to reliably produce and dispense carbonated ice due to unstable ice separation and issues with ice being caught, affecting the consistency and availability of carbonated water and ice.
Innovation Solution
A refrigerator design that includes a mixing tank for carbonated water production, an ice-making machine, and a dispenser system with specific flow paths and valves to manage the supply of general and carbonated water, ensuring stable ice formation and separation, and a CO2 injection system for carbonated ice production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If carbonated water is supplied to the ice-making machine to produce carbonated ice, then the functionality and versatility of the refrigerator is improved, but the reliability of ice separation and ice supply deteriorates due to unstable ice separation and caught ice issues
Solution Approach 1:
The water supply system is segmented into separate flow paths: one for general water and one for carbonated water. Valves are placed at different locations to control water supply to the ice-making machine, allowing independent control of general ice and carbonated ice production. This segmentation enables reliable operation by preventing mixed water supply issues.
Solution Approach 2:
A valve is introduced as an intermediary component to control and regulate the water supply to the ice-making machine. This intermediary device ensures that only the appropriate water type (general or carbonated) reaches the ice-making machine at any given time, preventing the caught ice problem and improving supply reliability.
2Ease of operation
If a valve is placed near the water supply source to control water flow, then the control capability is improved, but the complexity of the water supply system increases and may cause unstable ice separation
Solution Approach 1:
The valve near the water supply source is designed to perform multiple functions: controlling both general water and carbonated water supply to the ice-making machine. This multi-functional valve reduces the need for separate control mechanisms, thereby managing system complexity while maintaining control capability.
Solution Approach 2:
The valve is positioned upstream near the water supply source to perform preliminary control of water flow before it reaches the ice-making machine. This preliminary action allows the system to establish proper water flow conditions in advance, ensuring stable ice separation while maintaining operational control.
3Adaptability or versatility
If carbonated water is used for ice making, then the product variety and user convenience is improved, but the ice-making process becomes less stable due to CO2 interference with ice formation and separation
Solution Approach 1:
Different water qualities are supplied to different modes of operation: general water for general ice making and carbonated water for carbonated ice making. The system maintains local quality appropriateness by ensuring the correct water type reaches the ice-making machine based on the selected mode, thereby maintaining ice-making stability while providing product variety.
Solution Approach 2:
The water supply system is made dynamic through valve control, allowing the system to adapt between supplying general water and carbonated water to the ice-making machine based on user selection. This dynamic control enables the system to maintain stability for each specific mode while providing versatility across different modes.
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
The solution enables reliable production and dispensing of carbonated ice, improving the reliability of carbonated ice supply and allowing for the creation of high-concentration carbonated ice by controlling water supply, temperature, and CO2 injection.
Implementation Method 1
a mixing tank in which CO2 gas and general water are mixed with each other so that carbonated water can be made
Implementation Method 2
an ice-making machine that makes general ice by receiving general water from the external water supply source or the general water tank and makes carbonated ice by receiving carbonated water from the mixing tank
Data Source
AI summary
Provided is a refrigerator including: a main body; a storage compartment formed in the main body; a door that opens/closes the storage compartment; a general water tank in which general water supplied from an external water supply source is stored; a mixing tank in which general water supplied from the general water tank is mixed with carbon dioxide (CO2) so that carbonated water is made and stored; a dispenser that provides general water supplied from the general water tank to an outside and provides carbonated water supplied from the mixing tank to the outside of the refrigerator; and an ice-making machine that makes general ice by receiving general water from the external water supply source or the general water tank and makes carbonated ice by receiving carbonated water from the mixing tank, thereby providing general water, carbonated water, general ice, and carbonated ice through the dispenser.