Solid fuel stove
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Solution Overview
Problem
Existing solid-fuel stoves are often lightweight, collapsible, and made with lower quality components, leading to durability issues and frequent maintenance needs, particularly with burners and grates that deteriorate over time, and lack robustness for outdoor use and element resistance.
Innovation Solution
A solid steel, wood-fed stove design with a unique funnel-shaped top, angled fuel chute for gravity-fed combustion, stainless steel construction for durability, and adjustable legs for uneven terrain, incorporating a peripheral 'potato plate' for radiant heat and ash management via gravity-assisted ash removal, allowing for efficient and long-lasting outdoor cooking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight and collapsible design is used for outdoor stoves, then portability is improved, but durability and robustness deteriorate
Solution Approach 1:
The stove is divided into separable components including a collapsible support structure with legs that can be folded against the body, a removable cooking grate, and a separate ash pan. This segmentation allows the support structure to be lightweight and collapsible for portability, while the cooking surfaces and ash management components can be made from more durable materials to maintain reliability during outdoor use.
Solution Approach 2:
The support structure incorporates collapsible legs that can be extended for stability during cooking and folded against the stove body for compact storage and transport. This dynamic configuration allows the same structure to provide both portability when collapsed and structural stability when deployed, resolving the contradiction between lightweight design and durability.
2Ease of manufacture
If lower quality components are used for mass production, then manufacturing cost is reduced, but maintenance needs and deterioration increase
Solution Approach 1:
By segmenting the stove into modular components (cooking grate, ash pan, support legs, body), each part can be manufactured using appropriate processes and materials for its specific function. This allows mass production of simple components while maintaining durability where needed, and simplifies replacement of worn parts without requiring repair of the entire unit.
Solution Approach 2:
The design incorporates an easily removable ash pan that can be emptied or replaced when worn, and a collapsible support structure that can be replaced if damaged. This approach allows critical wear components to be discarded and replaced rather than repaired, reducing maintenance complexity while enabling mass production of standardized replacement parts.
3Reliability
If robust stainless steel construction is used, then durability and heat resistance are improved, but weight increases
Solution Approach 1:
The stove uses stainless steel selectively for components that require heat resistance and durability (cooking grate, ash pan, fuel chamber) while using lighter materials or thinner gauge metal for the support structure and body. This segmented material selection provides robust construction where needed while minimizing overall weight for portability.
Solution Approach 2:
Different parts of the stove have different material qualities matched to their functional requirements. The cooking surfaces and ash management components use heavy-duty stainless steel for durability and heat resistance, while the support legs and collapsible structure use lighter materials sufficient for structural support but not requiring the same heat resistance, thereby reducing overall weight while maintaining local durability.
4Ease of operation
If complex ash management systems are used, then cleaning efficiency is improved, but device complexity increases
Solution Approach 1:
The ash pan is designed as a separate, removable component that can be easily detached from the fuel chamber and emptied or washed. This segmentation allows ash management to be simplified to basic gravity-fed ash collection and manual emptying, avoiding complex mechanical systems while maintaining ease of operation for ash removal.
Solution Approach 2:
The ash pan is positioned and designed to allow users to easily access and empty ashes without requiring tools or complex mechanisms. The simple gravity-fed design allows ashes to accumulate naturally in the pan, which can then be removed by lifting and tilting the pan, providing self-service ash management with minimal structural complexity.
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 stove provides high-efficiency, long-lasting heat for outdoor cooking, with durable stainless steel components and ash management features that enhance usability and longevity, enabling reliable cooking on various fuels without frequent maintenance.
Implementation Method 1
Fuel is provided through a fuel chute that utilizes gravity to descend to the bay floor or fuel grate
Implementation Method 2
a fuel bay for the combustion of solid fuels
Implementation Method 3
Oxygen enters between the chute floor and the chute shelf to enter the fuel aperture where it ascends upward to the fuel grate
Data Source
AI summary
The present invention includes a stove with an efficiently-burning fuel bay and chimney that permits ascending combusted gases to cook food on a cooking shelf. The fuel bay may include a grate that is angled commensurate with a fuel-addition chute.