Soft Freeze Compartment Assembly for Independent Freezer Temperature Control
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Solution Overview
Problem
Conventional refrigeration appliances lack the ability to independently control temperature within a freezer compartment for maintaining food items at specific temperatures to prevent ice crystal growth or keep them in a soft freeze state, which can damage freshness or hinder serving.
Innovation Solution
A soft freeze assembly is integrated into the freezer compartment, featuring a second storage compartment with a heat source and thermistor, controlled by a controller to maintain a temperature independent of the main freezer compartment, allowing consumers to select desired temperatures for specific food items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional freezer storage compartment maintains a substantially even temperature, then the temperature is stable and uniform throughout the compartment, but the ability to rapidly cool or maintain certain food items at different temperatures is lost
Solution Approach 1:
The freezer compartment is divided into a main freezer storage compartment and a separate soft freeze assembly with its own storage compartment. This segmentation allows independent temperature control in each zone, enabling the soft freeze compartment to maintain higher temperatures for specific food items while the main freezer remains at standard freezing temperatures.
Solution Approach 2:
The soft freeze assembly incorporates a localized heating element and insulation specifically in the soft freeze storage compartment to maintain a different temperature profile than the main freezer. This local quality modification enables selective temperature management for particular food items without affecting the overall freezer temperature uniformity.
2Adaptability or versatility
If a heat source is added to create a soft freeze compartment within the freezer, then independent temperature control is achieved, but the device complexity increases
Solution Approach 1:
The soft freeze assembly is integrated within the existing freezer compartment structure, merging the heating element, insulation, and control systems into a unified assembly that occupies space within the main freezer. This combining approach adds functionality while minimizing the need for separate independent systems.
Solution Approach 2:
The controller serves multiple functions: it monitors temperatures from both the main freezer and soft freeze compartment, manages the heating element operation, and coordinates with the freezer's existing cooling system. This multi-functionality reduces the need for separate control systems and minimizes overall device complexity.
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 maintenance of food items at desired hardness levels by allowing independent temperature control within the soft freeze compartment, preventing ice crystal growth and maintaining items like meat and dairy products in a soft freeze state for easier handling.
Implementation Method 1
A heat source is positioned with respect to the second storage compartment and configured to heat air within the second storage compartment to a second temperature greater than the first temperature within the freezer storage compartment
Implementation Method 2
A thermistor is positioned with respect to the second storage compartment and configured to detect a temperature within the second storage compartment
Data Source
AI summary
A soft freeze assembly for a refrigerator including a freezer storage compartment having a first temperature includes a second storage compartment positioned within the freezer storage compartment. A heat source is positioned with respect to the second storage compartment and configured to heat air within the second storage compartment to a second temperature greater than the first temperature within the freezer storage compartment. A controller is in operational control communication with the heat source and configured to operate the heat source.