Ice formation
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Solution Overview
Problem
Conventional ice-making techniques for home or personal use often result in cloudy ice due to trapped impurities, and commercially available clear ice is impractical, expensive, and limited in shape and size.
Innovation Solution
A compact, lightweight frozen substance maker that uses directional freezing with a heat pump, cold plate, mold base, and agitator to produce clear ice by aligning crystal structures, excluding impurities from the crystal lattice, and includes features like a seed crystal chamber and overflow reservoir for efficient water circulation and ice formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ice-making techniques are used, then ice is formed quickly and easily, but the ice becomes cloudy due to trapped impurities
Solution Approach 1:
The freezing process is divided into two distinct stages: first forming a clear seed crystal in the seed crystal chamber, then using that seed to grow clear ice in the mold chamber. This segmentation allows impurities to be excluded at each stage, producing clear ice without requiring complex filtration systems.
Solution Approach 2:
A seed crystal chamber is used to pre-form a clear ice crystal before the main freezing process. This preliminary action ensures that the freezing front starts with a clean crystal structure, preventing impurity incorporation from the beginning of the freezing process.
2Manufacturing precision
If commercially available clear ice is purchased, then clear ice is obtained, but it is expensive and limited in shape and size
Solution Approach 1:
The mold base and mold top can be configured in different arrangements to create various ice shapes and sizes. The system is designed to accommodate multiple mold configurations, allowing users to produce different types of clear ice (spheres, cubes, etc.) with the same apparatus.
3Ease of operation
If home ice-making devices are used, then convenience is improved, but they require significant time and preparation
Solution Approach 1:
The agitator continuously circulates water during the freezing process, maintaining consistent heat transfer and preventing stagnant zones where impurities could accumulate. This continuous action ensures uniform freezing and reduces total formation time compared to static freezing methods.
4Manufacturing precision
If directional freezing is implemented to produce clear ice, then impurities are excluded from the crystal lattice, but the device becomes more complex
Solution Approach 1:
The freezing system is segmented into a seed crystal chamber and a mold chamber, allowing directional freezing to occur in a controlled sequence. This segmentation simplifies the overall system design by breaking down the complex directional freezing process into manageable stages.
Solution Approach 2:
The seed crystal acts as an intermediary between the cooling source and the water to be frozen. It provides a pre-formed crystal structure that directs the freezing front, eliminating the need for complex temperature control systems to achieve directional freezing.
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 consistently produces clear ice, reducing impurity release and foaming in beverages, and is aesthetically preferable, while being convenient, economical, and versatile for various ice shapes and sizes.
Implementation Method 1
The frozen substance maker may include a heat pump, a cold plate, a mold base, a mold top, and an agitator. The cold plate may be in thermal communication with the heat pump.
Implementation Method 2
The cold plate may be in thermal communication with the heat pump.
Implementation Method 3
The cloudiness of the ice forms when these impurities are trapped as water molecules form into the crystal lattice of the ice. The misaligned crystals refract ambient light back out instead of allowing the light to pass directly through, giving the ice an opaque appearance.
Data Source
AI summary
A frozen substance maker includes a heat pump, a cold plate, a mold base, a mold top, and an agitator. The cold plate is in thermal communication with the heat pump. The mold base is positioned on the cold plate. The mold base and the cold plate define a seed crystal chamber. The mold top is positioned on the mold base. The mold base and the mold top define a mold cavity in fluid communication with the seed crystal chamber. The mold top defines an overflow reservoir in fluid communication with the mold chamber. The agitator is located at least partially within the overflow reservoir.