Refrigeration Cabinet Sliding Pivot Door for Clear Front Access
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Solution Overview
Problem
Commercial refrigerators with hinged doors pose a barrier to customers during sales hours, obstructing access and creating a hindrance in the sales area, while existing solutions that pivot doors into the interior either restrict usable space or require significant door width reduction, leading to energy inefficiencies and aesthetic issues.
Innovation Solution
A refrigerated cabinet with a partially or completely transparent door that rotates about a vertical axis and is displaceable along a guide track, minimizing the pivoting range outside and inside the cabinet, allowing for automatic operation and a continuous, uninterrupted display area, using a base to define the pivoting range and house the drive mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinged door is used to close the access opening, then the door can be easily opened and closed, but the door represents an obstruction in the exterior space in front of the refrigerated cabinet when open and a barrier to goods when closed
Solution Approach 1:
The door leaf is extracted from the traditional hinged configuration and repositioned to pivot into the interior space of the refrigerated cabinet rather than swinging outward. This removes the obstruction from the exterior sales area while maintaining the door's closing function.
Solution Approach 2:
The door movement is transitioned from a two-dimensional swing in the exterior space to a three-dimensional pivoting motion that utilizes the interior space of the cabinet. The door now moves along a guide track within the cabinet interior, changing the spatial dimension of its operation.
2Object-generated harmful factors
If the door pivots completely into the refrigerated cabinet interior, then the exterior space is cleared, but the usable cold room space is severely restricted and the distance between the front of the cabinet and goods increases
Solution Approach 1:
Instead of requiring the door to pivot completely into the cabinet interior, the guide track is designed to accommodate only the necessary pivoting range. This partial action approach allows the door to clear the exterior space sufficiently while minimizing encroachment into the usable cold room space.
Solution Approach 2:
The door system transitions from a static hinged position to a dynamic pivoting mechanism with controlled movement along a guide track. This dynamic design allows optimization of the pivoting range to balance exterior space clearance with interior space preservation.
3Volume of stationary object
If the door width is significantly limited to counteract the space restriction, then the pivoting range can be reduced, but this forms a barrier to the goods and affects the display
Solution Approach 1:
The door system is segmented into multiple door leaves that can pivot independently along the guide track. This segmentation allows each leaf to move through a reduced pivoting range while collectively providing adequate access to goods, avoiding the need to limit individual door widths excessively.
Solution Approach 2:
The guide track design serves multiple functions: it guides the door leaves during pivoting, limits the pivoting range to preserve interior space, and accommodates the door movement without requiring significant width reduction. This multi-functional design resolves the contradiction between space preservation and goods accessibility.
4Loss of energy
If an automatic door with drive mechanism is implemented, then the door operation is automated and energy efficiency is improved, but the device complexity increases
Solution Approach 1:
The manual door operation is replaced with an automatic drive mechanism that can be controlled electronically. This substitution reduces energy loss by ensuring the door is properly closed and sealed, while the automated control system manages the increased mechanical complexity.
Solution Approach 2:
The automatic door system operates autonomously, detecting when the door needs to be opened or closed and executing the movement without manual intervention. This self-service capability improves energy efficiency by maintaining proper sealing while reducing the need for complex manual operation mechanisms.
Data Source
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AI summary
A refrigeration cabinet, in particular a commercial refrigerator or freezer, is provided. The refrigeration cabinet has a housing, which has a front access opening, a door, which has at least one door leaf, for the access opening, and a guide. The door leaf has a height and a width and is mounted such that it can be rotated about a vertical rotation axis and can be displaced transverse to the rotation axis. The guide defines a movement of the door leaf between a closed position and an open position in such a way that the pivot region of the door leaf projects less than a full door-leaf width into the exterior in front of the access opening, and that the door leaf is mounted such that it can be rotated about a vertical axis and can be displaced transverse to the rotation axis.