Clear Ice Sphere Molding With Directional Freezing Flow
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Solution Overview
Problem
Existing ice making technologies struggle to produce clear ice structures without air bubbles, impurities, and fractures, as they often rely on static water which can lead to uneven freezing and trapped minerals.
Innovation Solution
A mold apparatus with first and second mold portions that are moveable between open and closed positions, featuring a liquid inlet and outlet for continuous water flow, ensuring directional solidification and reducing the likelihood of air and mineral entrapment, using a thermal gradient to form clear ice structures like spheres.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If static water is used for ice making, then the process is simple, but air bubbles and impurities are trapped in the ice structure
Solution Approach 1:
The patent employs hydraulic principles by implementing continuous water flow through the mold cavity during freezing. Water is supplied under pressure through inlet channels and exits through outlet channels, creating a flowing water system that prevents air bubble entrapment and ensures uniform ice structure formation while maintaining manufacturing simplicity
Solution Approach 2:
The patent applies preliminary action by pre-cooling the mold apparatus before water flow begins, and by controlling the sequence of water inlet/outlet operations. The mold is cooled to freezing temperature beforehand, and water flow is initiated only after the mold is ready, ensuring optimal freezing conditions from the start and preventing impurity entrapment
2Object-affected harmful factors
If continuous water flow is implemented, then air and mineral entrapment is reduced, but the device complexity increases
Solution Approach 1:
The patent divides the mold apparatus into multiple functional segments: inlet channels, outlet channels, cooling channels, and mold cavities. This segmentation allows each component to perform its specific function efficiently while maintaining overall system manageability. The water flow path is divided into distinct inlet and outlet regions, enabling controlled flow through the mold without excessive complexity
Solution Approach 2:
The mold apparatus is designed with multi-functionality where the same structural components serve multiple purposes. The channels that supply water also serve as cooling pathways, and the mold cavity structure simultaneously defines the ice shape and facilitates water flow distribution. This reduces the need for separate dedicated components for each function
3Manufacturing precision
If directional solidification is achieved through thermal gradient, then clear ice structures are produced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent implements local quality by creating different thermal zones within the mold apparatus. The cooling channels are strategically positioned to generate a thermal gradient from the mold walls inward, ensuring that freezing progresses directionally from the boundaries toward the center. This localized thermal control produces uniform ice structure without requiring complex overall thermal management systems
Solution Approach 2:
The system uses the freezing process itself to generate the thermal gradient needed for directional solidification. As water begins to freeze at the mold walls, the phase change releases latent heat that naturally creates temperature differences within the mold cavity. The design leverages this self-generated thermal gradient to maintain directional freezing without requiring external active thermal control mechanisms
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 effectively produces clear ice structures by ensuring continuous water flow and directional solidification, minimizing air bubbles and impurities, and reducing the risk of fractures, resulting in clear and consistent ice formation.
Implementation Method 1
ensuring directional solidification and reducing the likelihood of air and mineral entrapment
Implementation Method 2
using a thermal gradient to form clear ice structures like spheres
Implementation Method 3
featuring a liquid inlet and outlet for continuous water flow, ensuring directional solidification and reducing the likelihood of air and mineral entrapment
Data Source
AI summary
A method of making clear ice spheres includes a providing a mold apparatus having a first mold portion and a second mold portion having mold cavity segments which define one or more mold cavities when the mold apparatus is assembled. A clear ice sheet is deposited in the mold apparatus in a channel defined by the spaced apart mold portions when the mold apparatus is in an open position. The mold apparatus is assembled about the sheet of clear ice such that the clear ice sheet is shaped to form one or more clear ice structures in the mold cavities.