Adjustable Door Mullion Sealing in Refrigeration Cabinets
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Solution Overview
Problem
Refrigeration devices face challenges in achieving effective sealing between doors while maintaining unhindered opening and closing, as the upright member's height must match the inner chamber closely to prevent air leakage but may cause frictional wear if the gap is too small.
Innovation Solution
The upright member is made adjustable in height relative to the body and door, using a suspension device with a vertical channel and supporting bolt, allowing for adjustable fixing through a locking element that can be positioned at different heights and orientations, ensuring proper sealing and easy door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upright member height is fixed to match the inner chamber height, then sealing effectiveness is improved, but the risk of frictional wear and door operation difficulty increases
Solution Approach 1:
The upright member is made adjustable in height relative to the body through a suspension device with a supporting bolt that can be positioned at different heights in a vertical channel. This transforms the fixed height configuration into a dynamic, adjustable one, allowing the system to adapt between sealing effectiveness and ease of operation based on actual conditions.
2Reliability
If the play between upright member and inner chamber is reduced, then sealing effectiveness is improved, but frictional wear and door operation difficulty increase
Solution Approach 1:
The height parameter of the upright member is made variable through the adjustable suspension device. By changing the height parameter to create optimal clearance (play) between the upright member ends and the inner chamber surfaces, the system achieves effective sealing while minimizing frictional wear and preventing door operation difficulties.
3Reliability
If the upright member height is made adjustable, then both sealing effectiveness and ease of operation are improved, but device complexity increases
Solution Approach 1:
The height adjustment function is segmented into a modular suspension device consisting of a vertical channel, supporting bolt, and locking element. This segmentation allows the adjustment mechanism to be implemented in a simple, cost-effective manner with minimal added complexity, while still achieving both effective sealing and ease of operation.
Data Source
AI summary
A refrigeration device including a body and a first and a second door which jointly define an inner chamber. The first door bears an upright member which engages in the inner chamber and comes in contact with the first and the second door on their inner side in the closed position of the doors and which may be pivoted on opening the first door to pass the second door. The upright member is adjustable in height relative to the body.