Food oven
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Solution Overview
Problem
Wood-fired ovens face issues with high heating times, residue buildup, and high maintenance and operational costs, which reduce their efficiency and usability.
Innovation Solution
A food oven design incorporating a pyrolytic burner that utilizes pyrolytic combustion of solid fuel, such as wood, to achieve quick heating and maintain temperature with reduced fuel consumption, while minimizing residue production through a dual-chamber burner system and efficient air circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wood-fired combustion is used to achieve organoleptic quality, then cooking quality is improved, but heating time and fuel consumption increase
Solution Approach 1:
The combustion chamber is divided into two separate chambers: a first chamber for pyrolysis of solid fuel and a second chamber for combustion of generated gas. This segmentation allows efficient energy conversion while maintaining wood-fired cooking qualities, resolving the contradiction between cooking quality and heating time.
Solution Approach 2:
The system changes the combustion parameters by converting solid fuel combustion to gas combustion through pyrolysis. This parameter change enables faster heating and reduced fuel consumption while preserving the organoleptic benefits of wood-fired cooking through controlled pyrolysis.
2Reliability
If traditional wood burning is used, then organoleptic quality is maintained, but residue buildup increases
Solution Approach 1:
By separating pyrolysis and combustion into different chambers, the system prevents incomplete combustion residues from contaminating the cooking chamber. The gas combustion in the second chamber produces minimal residue compared to direct solid fuel burning, reducing cleaning requirements.
Solution Approach 2:
The system replaces direct solid fuel combustion with gas combustion achieved through pyrolysis. This substitution eliminates the mechanical process of burning solid wood that produces ash and residue, significantly reducing buildup in the cooking chamber.
3Speed
If high fuel consumption is used to reduce heating time, then heating speed is improved, but operational costs increase
Solution Approach 1:
The system changes the energy conversion parameters by using pyrolysis to convert solid fuel to gas, which then combusts more efficiently. This parameter change achieves faster heating speeds while reducing overall fuel consumption compared to traditional direct wood burning.
Solution Approach 2:
The pyrolysis process generates combustible gas that burns with intense heat in the second chamber. This accelerated oxidation provides rapid heating while being more fuel-efficient than direct solid fuel combustion, resolving the contradiction between heating speed and fuel consumption.
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 oven achieves rapid heating and maintains temperature efficiently with lower fuel consumption, reduces residue buildup, and increases usable cooking space, thereby lowering operational and maintenance costs while preserving the organoleptic qualities of wood-fired cooking.
Implementation Method 1
a pyrolytic burner (3) heating the compartment (21) allowing the food to be cooked, the burner (3) being configured to heat the compartment (21) by exploiting the heat from pyrolytic combustion
Implementation Method 2
the burner (3) being configured to heat the compartment (21) by exploiting the heat from pyrolytic combustion
Implementation Method 3
The circulator (33) is configured to feed air into the burner (3)
Data Source
AI summary
A food oven including a cooking compartment of a food; an opening for inserting the food into the compartment; and a pyrolytic burner heating the compartment allowing the food to be cooked.