Pod-Based Rapid Cooling System for Room-Temperature Beverage Freezing
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Solution Overview
Problem
Current methods for rapidly cooling food and drinks are inefficient, often requiring pre-cooling or pre-freezing and cannot achieve freezing temperatures quickly enough for single-serving preparations, especially for beverages like soft-serve ice cream and cocktails.
Innovation Solution
A refrigeration-based system with low startup times and a pod-machine interface that uses sterilized pods with efficient heat transfer to cool or freeze contents from room temperature to freezing in under two minutes, including the use of a clamshell evaporator and a mixing paddle within the pod for efficient mixing and dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional cooling methods are used, then cooling capacity is sufficient for large batches, but cooling time is too long and pre-cooling is required
Solution Approach 1:
The system divides the cooling process into two independent stages: rapid pre-cooling phase (room temperature to 40°F in 60-90 seconds) followed by a slower freezing phase (40°F to 0°F). This segmentation allows the system to optimize each phase separately, achieving extremely fast initial cooling without requiring lengthy pre-cooling preparation.
Solution Approach 2:
The refrigeration system performs preliminary cooling action by rapidly removing the majority of thermal energy in the first 60-90 seconds, bringing the beverage from room temperature to 40°F before the formal freezing cycle begins. This preliminary action eliminates the need for external pre-cooling equipment or extended preparation time.
2Temperature
If rapid cooling is attempted, then cooling time is reduced, but the system cannot achieve freezing temperatures quickly enough
Solution Approach 1:
The system dynamically adjusts refrigeration intensity based on real-time temperature feedback. During the 60-90 second rapid cooling phase, maximum cooling power is applied to reach 40°F quickly. Once this threshold is achieved, the system transitions to a controlled freezing phase where cooling intensity is modulated to achieve 0°F without causing excessive ice crystal formation or thermal shock.
Solution Approach 2:
The system changes the thermal parameters of the beverage progressively: first achieving rapid temperature reduction to 40°F, then transitioning to controlled freezing at 0°F. This parameter change strategy allows the system to overcome the physical limitation of heat transfer rates by adapting cooling intensity to the current thermal state of the beverage.
3Reliability
If single-serving rapid freezing is implemented, then beverage freshness is improved, but the refrigeration system complexity increases
Solution Approach 1:
The refrigeration system automatically monitors its own operational state and adjusts cooling parameters without external intervention. The controller continuously tracks temperature, cooling rate, and phase transition progress, making real-time decisions to optimize the freezing process. This self-service capability ensures consistent beverage freshness while avoiding the need for complex manual control systems.
Solution Approach 2:
The system incorporates temperature feedback mechanisms that continuously monitor the beverage's thermal state and adjust refrigeration output accordingly. This feedback loop ensures the beverage reaches the optimal freezing point (0°F) without overshooting or causing thermal damage, maintaining beverage quality and freshness while keeping the control system relatively simple through automated regulation.
4Productivity
If efficient heat transfer is used, then cooling efficiency is improved, but the pod-machine interface complexity increases
Solution Approach 1:
The system replaces complex mechanical heat transfer mechanisms with a streamlined pod insertion interface. The aluminum pod's inherent thermal conductivity provides efficient heat transfer from the beverage to the refrigeration system through direct thermal contact during the freezing process. This substitution eliminates the need for complex mechanical agitation, heat exchange surfaces, or moving parts, achieving high cooling efficiency through simple, reliable thermal contact.
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 the rapid production of frozen foods and drinks, such as soft-serve ice cream, frozen cocktails, and chilled beverages from room temperature in approximately 90 seconds, with the ability to store dairy products at room temperature for extended periods and provide single-serving portions without the need for pre-cooling or post-processing cleanup.
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
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.