Lid Channels Enhance Chimney Effect and Weatherproofing
Solution Overview
Problem
Existing grave light designs face issues with weatherproofing and oxygen supply, leading to premature flame extinguishment and incomplete combustion, while also increasing manufacturing costs with additional air circulation openings.
Innovation Solution
A hollow body with a removable lid, where the lid's inner wall is designed with channels for oxygen supply and the lid's structure directs combustion gases outwards, enhancing the chimney effect while preventing liquid ingress, and is constructed using simpler and cost-effective materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hollow body has an upward-tapering upper end area to drain water, then weatherproofing is improved, but oxygen supply to the flame is restricted causing premature extinguishment
Solution Approach 1:
The lid is segmented into functional zones: the upper inner edge area forms weatherproofing barriers (overhangs) that deflect water, while separate channel structures provide dedicated oxygen supply pathways. This segmentation allows each zone to optimize its specific function without compromising the other.
Solution Approach 2:
The channels act as intermediary structures between the external environment and the flame. They mediate the oxygen supply by creating controlled pathways that deliver fresh air to the flame while maintaining the weatherproofing function of the upper edge area.
2Reliability
If additional openings are added to the cup for air circulation, then combustion properties are improved, but manufacturing costs increase
Solution Approach 1:
The weatherproofing function and air circulation function are merged into a single integrated lid structure. The channels are formed as part of the lid's basic geometry rather than as separate components, eliminating the need for additional openings in the cup body and reducing manufacturing complexity.
Solution Approach 2:
The lid serves multiple functions simultaneously: it provides weatherproofing through its upper edge design, supplies oxygen through integrated channels, and maintains structural support. This multi-functionality eliminates the need for separate air circulation openings in the cup.
3Reliability
If the lid surface projects upwards beyond the hollow body to provide weather protection, then protection against precipitation is improved, but access to the flame is restricted
Solution Approach 1:
The lid is designed as a removable component rather than a fixed structure. This dynamic design allows the lid to be easily removed when flame access is needed and reattached when weather protection is required, providing flexibility without compromising either protection or accessibility.
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 provides improved weatherproofing and combustion properties by ensuring a consistent oxygen supply, reducing soot and CO emissions, and lowering manufacturing costs through efficient design.
Implementation Method 1
several channels are present in this area between the inner surface of the lid and the outer surface of the hollow body, the first end of the channels being below the upper inner edge of the inner wall of the lid, The lid opens into the interior of the device, and the second end of the channels leads to the outside of the device
Implementation Method 2
This allows fresh air to flow in through the channels between the hollow body, which is open at one end and facing upwards, and the lid, supplying the flame with oxygen. The combustion gases escape primarily through the openings in the lid. An advantage of the present invention is that this chimney effect is achieved with even simpler means
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a device comprising an upwardly open hollow body (1) and a lid (2) that is removable from or attachable to the hollow body and closed at the top, wherein the shell (3) of the lid (2) is provided with openings (4) and the lid (2) has an inner wall (7) in the area of each opening (4), wherein the upper inner edge (8) of the inner wall (7) is located further inwards and further upwards than the lower edge of the openings (4), wherein several channels (13) are provided between the inner surface of the lid (2) and the outer surface of the hollow body (1), the first ends of which open into the interior of the device below the inner wall (7) and the second ends of which lead to the outside of the device, wherein the first end of the channels (13) is located further upwards than the second end of the channels (13).