Intermediate-Temperature Ice Compartment With Freezer Air Ducting
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Solution Overview
Problem
Existing bottom mount refrigerators lack an efficient and practical method for integrating an icemaking compartment within the fresh food compartment, as the temperature requirements for ice formation and storage are not met, and there are challenges in providing an ice dispenser without compromising insulation and electrical connections.
Innovation Solution
A bottom mount refrigerator design with an icemaking compartment maintained at a temperature between 0° and 32°F, using a cold air duct from the freezer compartment, and an insulated and sealed icemaking compartment with a separate water fill tube to prevent freezing, along with a control system for efficient ice production and dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an icemaking compartment is placed within the fresh food compartment of a bottom mount refrigerator, then ice can be dispensed through the fresh food door, but the temperature in the fresh food compartment (about 40°F) is too high for effective ice formation which requires temperatures below 32°F
Solution Approach 1:
The refrigerator is divided into functionally distinct zones: the fresh food compartment maintains its normal temperature for food storage, while the icemaking compartment is created as a separate insulated space within it, allowing independent temperature control optimized for ice formation
Solution Approach 2:
A cold air duct system acts as an intermediary, transporting cold air from the freezer compartment to the icemaking compartment, enabling the icemaking compartment to achieve the required sub-32°F temperatures without directly cooling the entire fresh food compartment
2Ease of operation
If an icemaking compartment is integrated into the fresh food compartment, then ice dispensing is enabled, but insulation and sealing requirements increase to maintain the temperature differential
Solution Approach 1:
The icemaking compartment is nested within the fresh food compartment structure, utilizing the existing refrigerator walls and door framework. The insulated compartment fits into the fresh food space like a nested element, sharing structural boundaries while maintaining thermal separation
Solution Approach 2:
The icemaking compartment shares structural elements with the fresh food compartment, including the door assembly and overall housing. The insulated compartment is integrated into the existing refrigerator architecture, combining functions while minimizing additional insulation requirements
3Ease of operation
If a door-mounted ice dispenser is added to the fresh food compartment, then ice can be dispensed without opening the freezer door, but electrical connections and water supply to the icemaker become more complex
Solution Approach 1:
The icemaker is positioned within easy reach of the door-mounted dispenser mechanism, allowing the ice to be directly deposited into the dispenser chute. The compact arrangement within the icemaking compartment enables the icemaker to serve the dispenser without requiring complex transmission mechanisms
Solution Approach 2:
The water fill tube is routed vertically through the refrigerator top rather than horizontally across compartments. This vertical routing through the roof simplifies the water supply path to the icemaker and separates the water connection geometry from the horizontal compartment layout
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 efficient and timely icemaking, energy efficiency, user convenience, and aesthetic appeal by providing ice dispensing through the fresh food compartment door without compromising insulation or electrical connections, while maintaining precise temperature control.
Implementation Method 1
A bottom mount refrigerator design with an icemaking compartment maintained at a temperature between 0° and 32°F, using a cold air duct from the freezer compartment
Implementation Method 2
an insulated and sealed icemaking compartment with a separate water fill tube to prevent freezing
Data Source
AI summary
An insulated icemaking compartment is provided in the fresh food compartment of a bottom mount refrigerator. The icemaking compartment may be integrally formed with the liner of the fresh food compartment, or alternatively, may be modular for installation anywhere in the fresh food compartment. A removable bin assembly with a front cover normally seals the icemaking compartment to maintain the temperature in the compartment. A cold air duct formed in the rear wall of the refrigerator supplies cold air from the freezer compartment to the icemaking compartment. A return air duct directs a portion of the air from the icemaking compartment back to the freezer compartment. An air vent in the icemaking compartment directs another portion of air into the fresh food compartment. A control system provides for controlling refrigerator functions in a manner that promotes energy efficiency. The temperature of the ice compartment is between the temperatures of the fresh food and freezer compartments.