Appliance door including a wireless module
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Solution Overview
Problem
Conventional refrigerator appliance wireless modules placed within the cabinet or on its external surface experience reduced connectivity due to obstructions and are difficult to install or service, as they are often made of metal which interferes with wireless data transmission and reception.
Innovation Solution
A refrigerator appliance door design featuring a wireless module positioned on an endcap with a printed circuit board and antenna, where the endcap is made of plastic and includes recessed pockets for secure mounting and easy access, allowing the antenna to face outward for improved connectivity and facilitating tool-less installation and servicing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless module is placed within the cabinet or on the external surface of the cabinet, then it is protected by the cabinet structure, but wireless data transmission and reception connectivity is diminished due to obstructions and metal interference
Solution Approach 1:
The wireless module is extracted from the cabinet structure and relocated to the appliance door. Specifically, it is positioned on an endcap portion of the door that is externally accessible, removing it from the harmful electromagnetic environment created by the metal cabinet walls and internal obstructions. This extraction allows the antenna to face outward with clear line-of-sight for wireless communication.
Solution Approach 2:
The endcap structure serves as an intermediary mounting platform between the door and the wireless module. The endcap provides a non-metallic, externally-positioned surface that mediates the placement of the wireless module, allowing it to be securely mounted while maintaining optimal wireless connectivity away from the metal cabinet body.
2Reliability
If the wireless module is placed within the cabinet, then it is protected from damage, but installation and repair servicing become difficult as various elements must be removed
Solution Approach 1:
The wireless module is extracted from the enclosed cabinet interior and repositioned on the external endcap of the door. This location provides easy accessibility from the outside of the appliance, allowing technicians to install, service, or replace the wireless module without disassembling cabinet panels, removing shelves, or accessing internal components.
Solution Approach 2:
The endcap design incorporates self-contained mounting features such as recesses, clips, or adhesive surfaces that allow the wireless module to be easily attached and detached by the end user or technician without requiring specialized tools or complex assembly procedures. The module becomes self-servicing in terms of accessibility.
3Reliability
If the wireless module is positioned on the endcap with antenna facing outward, then wireless communication range is improved, but the module becomes more exposed to potential damage
Solution Approach 1:
The endcap structure performs multiple functions: it serves as the structural termination of the door, provides mounting support for the wireless module, offers protective enclosure through its housing, and enables external accessibility. This multi-functionality allows the wireless module to be positioned optimally for communication while still receiving protection from the endcap's physical structure.
Data Source
AI summary
An appliance door including an outer skin extending between first and second distal edges thereof, and an inner liner disposed adjacent the outer skin such that a space is formed therebetween. A first endcap is disposed at the first distal edge of the outer skin and the first endcap partially enclose the space formed between the outer skin and the liner. A wireless module is positioned on the first endcap and is configured to wirelessly communicate with a mobile device. The wireless module includes a printed circuit board and an antenna, wherein the antenna faces outwards and away from the first endcap.