Pod-Based Rapid Freezing System for Ice Cream Texture Control
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Solution Overview
Problem
Current ice cream production methods take significant time to chill ice cream from room temperature to freezing, often requiring 20 to 60 minutes and involving complex processes like pasteurization and homogenization, which can lead to undesirable effects such as caramelization and the need for stabilizers and emulsifiers to achieve a smooth texture.
Innovation Solution
A system and method for rapidly cooling ice cream and other foods/drinks using a refrigeration cycle with low startup times and a pod-machine interface that efficiently transfers heat, allowing for the production of soft-serve ice cream from room temperature in approximately 90 seconds, without the need for static freezing or stabilizers/emulsifiers, by increasing the rotational speed of the mixing paddle during the freezing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional ice cream production methods are used with pasteurization and homogenization, then the ice cream achieves smooth texture, but the processing time increases to 20-60 minutes and additional stabilizers/emulsifiers are required
Solution Approach 1:
The patent removes the pod from the machine after freezing, inverting the traditional approach where the machine is cleaned after use. This extraction principle eliminates time-consuming cleaning procedures and allows rapid sequential processing of multiple pods, reducing overall processing time while maintaining texture quality through the standardized freezing mechanism
Solution Approach 2:
The patent achieves smooth texture without traditional pasteurization and homogenization by changing the freezing parameters - using rapid freezing at temperatures below 0°F followed by controlled tempering. This parameter change eliminates the need for stabilizers and emulsifiers while reducing processing time from 20-60 minutes to approximately 5-10 minutes
2Loss of time
If rapid cooling is implemented to reduce processing time, then processing time decreases to 5-10 minutes, but the complexity of the cooling system increases
Solution Approach 1:
The cooling system is segmented into modular components: a freezing chamber with removable pod, a separate tempering chamber, and an independent heating element. This segmentation allows each component to be optimized independently and simplifies maintenance, reducing overall system complexity while enabling rapid 5-10 minute processing cycles through coordinated operation of the segments
Solution Approach 2:
The machine incorporates multi-functionality by integrating freezing, tempering, and heating capabilities into a single device. The same pod serves multiple functions - it is frozen in the freezing chamber, then transferred to the tempering chamber for texture development, and can be reheated if needed. This universal design reduces the need for separate equipment, managing complexity while achieving rapid processing
3Manufacturing precision
If stabilizers and emulsifiers are added to achieve smooth texture, then the ice cream texture improves, but the number of ingredients and processing complexity increases
Solution Approach 1:
The patent converts the potential harm of rapid freezing - which can create large ice crystals and rough texture - into a benefit by implementing controlled tempering. The rapid freeze below 0°F creates initial crystal structure, then the tempering phase at higher temperatures redistributes and refines these crystals, producing smooth texture without stabilizers. This converts what would be a defect into a quality enhancement
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
This approach enables the production of ice cream with a majority of ice crystals under 50 μm in size, resulting in a smooth texture, and allows for storage of dairy products at room temperature for extended periods without refrigeration, while reducing processing time and eliminating the need for additional stabilizers and emulsifiers.
Implementation Method 1
a pod-machine interface that is easy to use and provides extremely efficient heat transfer
Implementation Method 2
based on a refrigeration cycle with low startup times
Implementation Method 3
by increasing the rotational speed of the mixing paddle during the freezing process
Implementation Method 4
cool food and drinks in a container inserted into a counter-top or installed machine from room temperature to freezing in less than two minutes
Data Source
AI summary
Systems and methods have demonstrated the capability of rapidly cooling the contents of pods containing the ingredients for food and drinks.