Door-Mounted Icebox Damper for Climate Control
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Solution Overview
Problem
Door-mounted icemakers in refrigerators typically operate at too low a temperature, resulting in poor ice quality, poor harvest reliability, and consumer dissatisfaction due to trapped humidity, which affects the formation of craft ice cubes.
Innovation Solution
A refrigerator appliance with a door-mounted craft icemaker that includes a damper system to regulate air flow and temperature, featuring a movable damper over the icebox opening and a controller to selectively pivot the damper between open and closed positions, along with a heating assembly to maintain optimal temperature and humidity conditions for high-quality ice production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door-mounted icemaker is positioned in the freezer compartment, then the icemaker is easily accessible and integrated into the door structure, but the temperature is too low resulting in poor ice quality and poor harvest reliability
Solution Approach 1:
The patent separates the icemaker assembly from the main freezer compartment by providing it with a dedicated enclosed space on the door. This segmentation allows the icemaker to have its own controlled environment with regulated temperature and humidity, independent from the colder freezer compartment, thereby resolving the contradiction between accessibility and ice harvest reliability
Solution Approach 2:
The patent creates a localized environment within the icemaker enclosure that has different temperature and humidity characteristics than the surrounding freezer compartment. The insulated walls and controlled air flow create a specific microclimate optimal for ice making, allowing the icemaker to maintain elevated temperatures (above freezer temperature) while remaining accessible on the door
2Manufacturing precision
If the door-mounted icemaker operates at elevated temperature, then high-quality ice cubes are produced with no cracks or surface bumps, but the compartment traps humidity resulting in poor ice quality
Solution Approach 1:
The patent employs a movable damper that can dynamically adjust between open and closed positions to control air flow and humidity within the icemaker enclosure. This dynamic control allows the system to maintain elevated temperatures for quality ice production while periodically venting trapped humidity, thereby resolving the contradiction between ice quality and humidity control
Solution Approach 2:
The patent changes the physical parameters of the enclosure by introducing a movable damper that modifies air flow characteristics. The damper's position can be adjusted to change the humidity and temperature parameters within the icemaker space, allowing optimization of both ice quality and humidity control
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 damper system effectively regulates temperature and humidity, improving ice quality and reliability by preventing frost formation and ensuring easy ice release, thereby enhancing user satisfaction.
Implementation Method 1
a damper mounted over the icebox opening and being movable between an open position to permit a flow of air through the icebox opening and a closed position to prevent the flow of air through the icebox opening
Implementation Method 2
a heating assembly to maintain optimal temperature and humidity conditions for high-quality ice production
Implementation Method 3
a controller in operative communication with the drive motor for selectively pivoting the damper between the open position and the closed position
Data Source
AI summary
An ice making assembly mounted on a door of a refrigerator appliance includes an icebox mounted on the door and defining an ice making chamber and an icebox opening to the ice making chamber, an ice storage bin positioned below the icebox for storing ice, wherein an intake slot is defined between the icebox and the ice storage bin, a damper mounted over the icebox opening and being movable between an open position to permit a flow of air through the icebox opening and a closed position to prevent the flow of air through the icebox opening, a drive motor operably coupled to the damper, and a controller in operative communication with the drive motor for selectively pivoting the damper between the open position and the closed position.