Firepit Topper with Channeled Airflow for Complete Combustion

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Solution Overview

Problem

Conventional firepits lack optimization for airflow, leading to incomplete combustion of fuel, reduced heat emission, and less aesthetically pleasing flame production, as they often rely on electrical fans that are prone to failure due to heat.

Innovation Solution

A firepit topper with a plate featuring channels and safety guards that create an airgap, allowing for enhanced airflow by directing fresh air through the fire, increasing oxygen supply and promoting complete combustion, while also protecting the flame from injury.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If electrical fans are used to increase airflow in firepits, then airflow is improved, but reliability deteriorates due to heat-induced failure

Engineering Contradiction:
ImproveairflowVSAvoidfan reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent removes the electrical fan component entirely from the firepit system. Instead of using mechanical forced convection, the design relies on natural convection currents created by the fire itself to drive airflow through the combustion chamber, eliminating the reliability issues associated with heat-prone electrical components.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The firepit design allows the combustion process to self-generate the airflow needed for efficient burning. The heat from combustion creates natural convection currents that draw fresh air through the fuel bed, eliminating the need for external power sources or mechanical assistance.

Inventive Principle:
Principle #25Self-service

2Device complexity

If conventional firepit designs are used, then simplicity is maintained, but combustion efficiency deteriorates due to insufficient airflow

Engineering Contradiction:
Improvefirepit structureVSAvoidcombustion efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The firepit combustion chamber is segmented into multiple zones with controlled air intake paths. The design includes separate regions for primary combustion and secondary combustion, with air channels strategically positioned to provide staged air supply, improving combustion efficiency without adding complex mechanical systems.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces air channels and openings as intermediary structures that mediate between the external environment and the combustion zone. These intermediaries control the flow of oxygen to the fuel, enabling efficient combustion while maintaining a simple overall design.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 results in more efficient fuel combustion, a larger, aesthetically enhanced flame, and increased heat emission, while ensuring flame safety and ease of fuel loading and cleaning.

Implementation Method 1

allowing for enhanced airflow by directing fresh air through the fire, increasing oxygen supply and promoting complete combustion

Methodology Applied
Scientific EffectAirflow: Convection

Implementation Method 2

promoting complete combustion

Methodology Applied
Scientific EffectCombustion: Combustion

Data Source

PatentUS11713880B1Firepit topper
Publication Date: 2023.08.01 CAST MASTERS LLC
  • US11713880B1 patent drawing
  • US11713880B1 patent drawing
  • US11713880B1 patent drawing

AI summary

Disclosed is a firepit topper having a plate having a top side and a bottom side, a central opening of the plate, a first channel partially surrounding the central opening, a second channel partially surrounding the central opening, and an end of the first channel that is offset with respect to an end of the second channel.