Domestic Hood Lighting Module With Auto-Disconnect Removal
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Solution Overview
Problem
Existing domestic hoods require users to manually or tool-aidedly disconnect electric lighting components from the power source for filter unit access, posing safety risks and inefficiency.
Innovation Solution
The hood design allows for the electric disconnection of lighting components during removal by moving them from a connected to a disconnected position, ensuring electrical insulation without manual disconnection, facilitated by contact terminals and magnetic fixing means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the lighting means are made removable for maintenance access, then the ease of repair is improved, but the safety risk increases due to manual electrical disconnection requirements
Solution Approach 1:
The electrical disconnection is performed automatically by the system itself when the lighting means are removed, without requiring user intervention. The spring-loaded contact terminals self-disengage when the lighting means move away from the hood frame, making the system self-protecting during maintenance operations.
Solution Approach 2:
The electrical disconnection action is performed preliminarily and automatically as part of the removal process. Before the user can fully remove the lighting means, the electrical contacts are already disconnected by the spring mechanism, preventing any potential electrical contact during the removal operation.
2Device complexity
If the lighting means require manual electrical disconnection for removal, then the device complexity is reduced, but the ease of operation deteriorates due to additional disconnection steps
Solution Approach 1:
The electrical connection and mechanical fixing functions are merged into a single integrated assembly. The contact terminals are built into the hood frame structure, and the lighting means are mechanically attached in such a way that removal automatically triggers electrical disconnection, combining two operations into one seamless action.
Solution Approach 2:
The spring-loaded contact terminals act as an intermediary mechanism between the mechanical removal action and the electrical disconnection. When the lighting means are pulled away, the spring mechanism mediates the transition from connected to disconnected state, providing a smooth and automatic transition without requiring separate user actions.
3Reliability
If the lighting means are equipped with fixed electrical connections, then the reliability of electrical connection is improved, but the productivity decreases due to time-consuming removal procedures
Solution Approach 1:
The electrical connection system is made dynamic rather than static. The spring-loaded contact terminals can automatically transition between connected and disconnected states based on the position of the lighting means, allowing the system to adapt to both operational and maintenance modes without manual intervention.
Solution Approach 2:
The electrical disconnection is performed preliminarily and automatically as part of the removal process. Before the user can fully remove the lighting means, the electrical contacts are already disconnected by the spring mechanism, preventing any potential electrical contact during the removal 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
Enables safe and effortless removal of lighting components from the hood frame, reducing user risk and simplifying maintenance by allowing electrical disconnection during removal, thus improving user safety and convenience.
Implementation Method 1
The electric connection means comprise contact terminals arranged on the frame and magnetic fixing means for retaining the lighting means in the operating position
Data Source
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AI summary
The present disclosure relates to a hood (1) for domestic use, which comprises a support frame (10) with a power input (11), a motor fan unit (20) located within said support frame (10), lighting means (30) comprising an enclosure (33) that defines a seat (33a) containing a plate (32) having a plurality of LEDs (31), fixing means (40) for removably fixing said lighting means (30) to said support frame (10), electric connection means (60) for electrically connecting said lighting means (30) to said power input (11). The hood is characterized in that the fixing means (40) comprise at least one magnetic element (41) and at least one metal element (42) which are located on said support frame (10) and said lighting means (30) respectively, or vice versa and that said lighting means are movable relative to said support frame (10) between a first position, in which said electric connection means (60) electrically connect said lighting means (30) to said power input (11) and a second position, in which said lighting means (30) are electrically disconnected from said power input (11), wherein said electric connection means (60) are configured to electrically disconnect said lighting means (30) from said power input (11) directly, once said lighting means (30) have moved from said first position to said second position