Solid Fuel Brazier Metal Sheet Welding and Spatula Maintenance
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Solution Overview
Problem
Existing solid fuel stove braziers are structurally complex, expensive, and difficult to maintain and clean, with motorized spatulas that require disassembly for replacement.
Innovation Solution
A brazier design featuring a container and support made of metal sheet, cut and/or bent, and permanently connected by welding, allowing for easy assembly, maintenance, and spatula replacement without specialized intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a brazier is constructed using complex cast iron components with multiple perforations and channels, then the combustion air distribution is improved, but the manufacturing cost and structural complexity increase
Solution Approach 1:
The brazier is divided into multiple functional components: a base element with through holes for primary air, lateral elements for secondary air distribution, and a concave portion for fuel positioning. Each segment performs a specific combustion function, allowing independent optimization and simplification of individual parts while maintaining overall system effectiveness.
Solution Approach 2:
Multiple combustion functions are integrated into a unified brazier structure where the base element, lateral elements, and concave portion work together as a single assembly. The through holes in the base and lateral elements are combined to provide both primary and secondary air distribution simultaneously, reducing the need for separate air supply mechanisms.
2Reliability
If a motorized spatula is integrated into the brazier to keep holes clear, then the combustion efficiency is improved, but the ease of maintenance and cleaning deteriorates
Solution Approach 1:
The motorized spatula is extracted as a separate, removable component from the brazier assembly. It can be easily detached and replaced by the user without requiring disassembly of the entire brazier structure, maintaining combustion efficiency while significantly improving ease of maintenance.
Solution Approach 2:
The spatula is designed to be user-replaceable, allowing homeowners to perform maintenance themselves without requiring specialized service intervention. The simple removal and replacement mechanism enables self-service maintenance, reducing dependency on professional technicians.
3Reliability
If lateral elements are added to distribute secondary air, then the combustion process is improved, but the number of components and assembly complexity increase
Solution Approach 1:
The lateral elements serve multiple functions simultaneously: they distribute secondary air for combustion, provide structural support for the concave portion, and create the necessary spacing for air flow. This multi-functionality reduces the need for additional separate components while maintaining effective combustion.
Solution Approach 2:
Secondary air distribution is concentrated specifically at the lateral portions of the brazier where it is most needed for combustion, rather than distributing air uniformly throughout the entire structure. The lateral elements are positioned to deliver air precisely to the fuel combustion zone, optimizing combustion efficiency.
Data Source
Figure 1~2
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AI summary
A brazier (1) for stoves powered by solid fuel, comprising a container (10) configured to contain the fuel, provided with a bottom portion (28) that is substantially concave and affected with a distribution of through holes (32). The brazier (1) also comprises a support (11) configured to house said container (10); the container (10) and the support (11) both consisting of respective portions made of metal sheet (12, 13, 28, 29, 30), suitably cut and/or bent, or stamped and mutually connected in a permanent manner by welding.