Portable Cooking Appliance With Enclosed Flame and Air Baffles
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Solution Overview
Problem
Existing portable fuel-fired cooking appliances pose safety hazards due to exposed flames and are bulky, limiting their use to specific weather conditions and making them inconvenient to carry.
Innovation Solution
A portable, self-contained cooking appliance with a base that includes air-inlet and air-exit passages to manage combustion air, a fuel-fired burner or solid fuel element, and a design that allows for easy transportation and operation under all weather conditions, featuring a removable cooking pan and adjustable support legs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an exposed flame design is used in portable cooking appliances, then the cooking function is achieved, but safety hazards increase and weather resistance deteriorates
Solution Approach 1:
The patent introduces an intermediary enclosed combustion chamber that mediates between the fuel source and the external environment. This chamber contains the flame while allowing heat transfer to the cooking vessel, eliminating direct flame exposure hazards while maintaining cooking functionality.
Solution Approach 2:
The patent employs an enclosed shell structure that contains the combustion process. This shell acts as a protective barrier that prevents weather elements from affecting the flame while containing the flame within a safe enclosure, resolving both safety and weather resistance issues.
2Adaptability or versatility
If traditional portable cooking appliances are designed with weather protection, then reliability under various conditions improves, but device complexity and bulk increase
Solution Approach 1:
The enclosed combustion chamber serves multiple functions simultaneously: it contains the flame for safety, protects against weather elements, and facilitates heat transfer to the cooking vessel. This multi-functionality achieves weather resistance without proportionally increasing complexity.
Solution Approach 2:
The patent merges the weather protection function with the combustion containment function into a single integrated structure. The enclosed chamber that contains the flame also serves as the weather barrier, eliminating the need for separate protective elements and reducing overall complexity.
3Reliability
If traditional portable cooking appliances are designed with flame containment structures, then safety improves, but device bulk and weight increase making them inconvenient to carry
Solution Approach 1:
The patent employs thin-walled enclosed structures that provide flame containment with minimal material usage. These thin shells maintain safety through enclosure while keeping the overall weight and bulk low enough for portable applications.
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 appliance ensures safe operation under all weather conditions, prevents exposure to flames, and is compact and easy to transport, enhancing usability and safety.
Implementation Method 1
A fuel-fired burner is centrally positioned within the interior space and approximate the bottom surface of the cooking pan
Implementation Method 2
The bottom of the base defining a plurality of spaced air-inlet openings therethrough at a position outwardly of the fuel-fired burner
Implementation Method 3
A support means for supporting the base above a support surface
Data Source
AI summary
A portable self-contained fuel-fired cooking appliance (10) for heating food stuffs that does not have an exposed flame and is useable in all weather conditions The cooking appliance includes a base (12) with peripheral side walls (18), a handle (46), legs (58) and an open top (26), a heat source (32) positioned in the base (12), a cooking pan (30) removably received in the base, a lid (31) received on the pan and a gas supplying container (50) The base (12) also includes at least one air inlet passage (34), one air exit passage (36) and air baffles (40).