Swing Door System Mullion-Free Sealing
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Solution Overview
Problem
Conventional freezer devices with swing doors have limited customer visibility due to vertical mullions, which obstruct the view of products and require mullions for sealing, increasing energy consumption and reducing comfort.
Innovation Solution
A swing door system with at least two adjacent doors, each having a transparent region, where the doors provide an essentially hermetic sealing function without mullions, using transparent or translucent sealings and gas-filled insulating glass units to enhance visibility and sealing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertical mullions are used to provide sealing between adjacent swing doors, then sealing function is improved, but customer visibility is reduced and device complexity increases
Solution Approach 1:
The patent removes the vertical mullion structure from between adjacent swing doors and extracts the sealing function to be provided by the door edges themselves through overlapping arrangement and sealing strips. This eliminates the obstructive mullion while preserving the sealing function.
Solution Approach 2:
The patent transitions from a vertical sealing approach (using vertical mullions) to a horizontal sealing approach (using overlapping door edges with sealing strips). This dimensional shift in the sealing mechanism eliminates the need for vertical obstructions while maintaining sealing effectiveness.
2Strength
If vertical mullions are used to support swing doors, then mechanical robustness is improved, but customer visibility and comfort are reduced
Solution Approach 1:
The patent removes the vertical mullion support structure and extracts the support function to be provided by horizontal frame elements at the top and bottom of the door opening. This eliminates visual obstructions while maintaining mechanical support through an alternative structural arrangement.
Solution Approach 2:
The patent shifts the support function from vertical elements (mullions) to horizontal elements (frame members at top and bottom). This dimensional change in the support structure eliminates vertical obstructions while preserving mechanical robustness.
3Reliability
If mullions are used for sealing between swing doors, then sealing reliability is improved, but energy consumption increases
Solution Approach 1:
The patent removes the mullion structure and extracts the sealing function to be provided by overlapping door edges with integrated sealing strips. This simplified structure reduces material usage and manufacturing complexity while maintaining sealing reliability to prevent energy loss.
Solution Approach 2:
The patent employs flexible sealing strips attached to the door edges that can deform to ensure continuous contact and sealing. This flexible sealing approach provides reliable sealing without the need for rigid mullion structures, reducing energy consumption for maintenance and operation.
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 solution enhances customer comfort by providing an unobstructed view of products, reduces energy consumption through efficient sealing, and offers a cost-effective and mechanically robust design.
Implementation Method 1
Gas-filled insulating glass units to enhance visibility and sealing efficiency
Implementation Method 2
The sealings attached to the swing doors can comprise magnets to provide a magnetic force-locking connection with mullions and horizontal profiles of the freezer device
Data Source
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AI summary
The present invention relates to a swing door system (1) for a freezer device, comprising at least two adjacent swing doors (2, 3), each swing door having a transparent region (2a, 3a), wherein at least one of said two adjacent swing doors comprise a sealing (20, 30) and wherein said at least two adjacent swing doors are arranged such that in a closed position said at least one sealing provides an essentially hermetic sealing function between said two adjacent swing doors.