Single-Door Refrigerator Freezer With Selective Gasket Sealing
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Solution Overview
Problem
Single door refrigerator-freezers face issues with independent zone control, leading to poor food preservation and energy wastage due to the release of colder freezer air when the door is opened, as well as frost management problems from exposure to warmer air.
Innovation Solution
A refrigerator door design with a gasket channel surrounding only the refrigerator section, allowing independent sealing of the refrigerator compartment while the freezer section is not gasketed, using a dual-hinge system to mount the door, ensuring the freezer section is not exposed to warmer air when the door is opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single door covers both freezer and refrigerator compartments, then kitchen aesthetics are improved and device complexity is reduced, but independent zone control is lost and energy efficiency deteriorates due to warmer air exposure when the door is opened
Solution Approach 1:
The door is segmented into two distinct sections: a refrigerator section with a gasket channel and gasket for sealing, and a freezer section without a gasket. This segmentation allows the refrigerator compartment to be sealed independently while the freezer remains accessible, resolving the contradiction by enabling selective access without compromising the sealed section's energy efficiency.
Solution Approach 2:
Different parts of the door have different sealing properties: the refrigerator section has a gasket for tight sealing to prevent energy loss, while the freezer section has no gasket for easy access. This local differentiation allows each zone to have the quality it needs, resolving the contradiction between energy efficiency and accessibility.
2Device complexity
If a single door covers both compartments, then device complexity is reduced, but food preservation deteriorates due to temperature fluctuations when the door is opened
Solution Approach 1:
The door is divided into sealed and unsealed sections, allowing the refrigerator compartment to maintain stable temperatures through proper sealing while the freezer section can be accessed independently. This segmentation prevents temperature fluctuations in the refrigerator zone when the freezer is accessed, thereby improving food preservation reliability.
3Reliability
If a gasket surrounds both refrigerator and freezer sections, then sealing is improved, but frost management deteriorates due to repeated exposure to warmer air when the door is opened
Solution Approach 1:
The gasket is applied only to the refrigerator section, creating a seal that prevents warmer air from entering the refrigerator compartment. The freezer section remains unsealed, allowing frequent access without causing frost accumulation in the refrigerator zone. This selective sealing resolves the contradiction between maintaining sealing integrity and preventing frost generation.
4Reliability
If the freezer section is sealed with a gasket, then temperature control is improved, but ease of operation deteriorates due to frequent access requirements
Solution Approach 1:
The door has different sealing characteristics in different zones: the freezer section has no gasket for easy, frequent access, while the refrigerator section has a gasket for temperature maintenance. This local differentiation allows the freezer to be accessed frequently without compromising operation ease, while the refrigerator maintains proper temperature 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
This design maintains better temperature control for both the refrigerator and freezer sections, reducing energy wastage and frost issues, thereby enhancing food preservation and energy efficiency.
Implementation Method 1
The gasket is mounted in the gasket channel to seal the refrigerator compartment when the refrigerator door is positioned in the closed position relative to the refrigerator body
Implementation Method 2
The first hinge is attached to a top surface of the insulated door panel above the refrigerator section. The second hinge is attached to a bottom surface of the insulated door panel below the freezer section
Implementation Method 3
an insulated door panel
Data Source
AI summary
A refrigerator door includes an insulated door panel, a first hinge, and a second hinge used to mount the refrigerator door to a refrigerator body. The door panel includes a refrigerator section, a freezer section, a gasket channel, and a gasket. The freezer section is mounted below the refrigerator section to cover a freezer compartment when the refrigerator door is closed. The gasket channel is formed in the insulated door panel surrounding only the refrigerator section. The gasket is mounted in the gasket channel to seal the refrigerator compartment when the refrigerator door is closed. The first hinge is attached to a top surface of the insulated door panel above the refrigerator section. The second hinge is attached to a bottom surface of the insulated door panel below the freezer section. The freezer section is not surrounded by any gasket mounted to the insulated door panel.