Ribbed Door Vent Retainer for Refrigerator Vacuum-Lock Sealing
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Solution Overview
Problem
Existing door vent sealing assemblies for refrigerators struggle to effectively seal airflow passages between the freezer compartment and the icemaker compartment, leading to air leakage and potential temperature imbalances in the refrigeration compartment.
Innovation Solution
The proposed door vent sealing assembly features retainers with ribs that maintain space within the gaskets, preventing a vacuum suction effect and ensuring proper sealing of airflow passages when the door is closed. The retainers are coupled to air ducts and return ducts, and the gaskets adjust between compressed and expanded states as the door opens and closes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is compressed to seal airflow passages between the freezer compartment and the icemaker compartment, then the sealing effectiveness is improved, but a vacuum suction effect is generated that prevents the gasket from returning to its original state and causing sealing failure
Solution Approach 1:
The retainer is divided into multiple ribs that are spaced apart from each other. These ribs segment the gasket into multiple sections, preventing the formation of a continuous vacuum seal that would create harmful suction effects. The segmented structure allows the gasket to compress for sealing while preventing vacuum lock.
Solution Approach 2:
The ribs are positioned at specific locations on the retainer to create localized spacing within the gasket. This local quality modification ensures that critical sealing areas maintain compression while other areas have spacing to prevent vacuum effects, optimizing both sealing and vacuum prevention.
2Temperature
If the door vent sealing assembly is designed to seal airflow passages effectively, then temperature balance is improved, but the device complexity increases due to multiple components including retainers, ribs, and gaskets
Solution Approach 1:
The retainer serves multiple functions: it provides structural support for the gasket, creates the necessary spacing to prevent vacuum effects through its ribs, and directly engages with the door assembly. The gasket simultaneously provides sealing and allows for compression recovery. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The gasket is coupled to the retainer in a nested arrangement where the gasket surrounds or is surrounded by the retainer structure. The ribs are integrated into the retainer body rather than being separate components. This nesting reduces the number of discrete parts and simplifies assembly while maintaining the required functionality.
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 solution effectively seals airflow passages, maintaining the temperature difference between the freezer and refrigeration compartments, and preventing air leakage that could lower the refrigeration compartment temperature and impact compressor operation and energy consumption.
Implementation Method 1
The at least one gasket compresses toward the at least one retainer
Implementation Method 2
The ribs maintain a space within the at least one gasket to prevent a vacuum suction effect
Data Source
AI summary
A refrigeration appliance includes a cabinet that defines a cabinet outlet and a cabinet inlet in fluid communication with a freezer compartment. A door is coupled to the cabinet. The door defines a door inlet in fluid communication with the cabinet outlet and a door outlet in fluid communication with the cabinet inlet when the door is in a closed position. An icemaker compartment is disposed in the door. The icemaker compartment is fluidly coupled with the freezer compartment. A retainer is at least partially disposed in each of the door inlet and the door outlet. Each retainer includes a rim that defines ribs. Each rib is spaced apart from adjacent ribs. A gasket is coupled to each retainer. Each gasket includes an abutment surface that abuts a cabinet surface when the door is in the closed position to seal airflow passages between the freezer compartment and the icemaker compartment.