Monolithic Hearth Oven Layout for Uniform Pizza Baking
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Solution Overview
Problem
Conventional open hearth ovens experience significant temperature gradients and uneven baking due to the necessary movement of pizzas, leading to inefficient cooking processes and attention requirements for chefs.
Innovation Solution
The design incorporates a continuous monolithic baking surface made of silicon carbide cement with elongate apertures for in-shot burners, optimized burner placement, and a thermal communication system to ensure uniform heat distribution, including a box below the baking surface to enhance heat transfer and circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If conventional tube burners are positioned at sides and back of housing, then heat input is provided to the enclosure, but significant temperature gradients exist within the enclosure and on the baking surface
Solution Approach 1:
The single heat source is segmented into multiple burners positioned at different locations (front, center, and rear) within the enclosure. This segmentation allows heat to be distributed more uniformly across the baking surface, eliminating the temperature gradients that occur with a single side-mounted burner.
Solution Approach 2:
Different regions of the enclosure are provided with localized heating zones through strategically positioned burners. The front burner heats the front region, the center burner heats the middle region, and the rear burner heats the back region, ensuring each area receives appropriate heat input to maintain uniform temperature distribution.
2Strength
If baking deck is formed from discrete pieces or compound materials, then structural support is provided, but uneven baking occurs requiring frequent pizza movement
Solution Approach 1:
Multiple discrete baking bricks or compound material sections are merged into a single continuous baking surface. This unified surface eliminates the thermal discontinuities and gaps that exist between discrete pieces, providing consistent heat transfer across the entire baking area and eliminating the need for frequent pizza repositioning.
Solution Approach 2:
The baking surface is constructed using composite materials that combine the structural support properties of traditional baking bricks with the thermal uniformity of homogeneous materials. This composite construction maintains the necessary mechanical strength while achieving uniform heat distribution across the baking surface.
3Reliability
If chef frequently moves pizzas between positions, then proper baking is attempted, but significant attention and time are required
Solution Approach 1:
The baking surface is designed to create equipotential thermal conditions across all cooking positions. By eliminating temperature gradients through proper burner placement and using a continuous baking surface, all areas of the deck provide equivalent baking conditions, allowing pizzas to be placed anywhere on the surface without requiring movement for uniform cooking.
Solution Approach 2:
The oven system is designed to automatically provide uniform heating across the entire baking surface through its burner configuration and thermal mass distribution. This self-regulating heat distribution eliminates the need for the chef to manually intervene and reposition pizzas, allowing the baking process to proceed autonomously with consistent results.
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
This configuration results in more uniform baking temperatures and improved thermal performance, allowing for simultaneous cooking of multiple pizzas with reduced attention needed, as evidenced by negligible temperature differences between internal and surface temperatures within 20 minutes of heating.
Implementation Method 1
The baking surface is silicon carbide cement... a continuous monolithic member... does not have any seams or joints therein
Implementation Method 2
a first plurality of in-shot burners extend through the elongate right aperture and a second plurality of in-shot burners extend through the elongate left aperture
Implementation Method 3
during operation heated combustion gas from the burners is directed toward the roof of the enclosure during operation
Implementation Method 4
a box is disposed below the baking surface with an interior that is in thermal communication with the baking surface, wherein the box supports a burner that is oriented such that heated combustion gas from the burners flows through the box and a portion of the heat from combustion is transferred through the baking surface
Data Source
AI summary
An oven is provided. The oven includes a housing comprising a baking surface and an enclosure. The baking surface extends within the housing and includes side apertures with a first plurality of in-shot burners that extend through each aperture, wherein during operation heated combustion gas from the burners is directed toward the roof of the enclosure during operation. The oven additionally includes a box disposed below the baking surface with an interior that is in thermal communication with the baking surface, wherein the box supports a burner that is oriented such that heated combustion gas from the burners flows through the box and a portion of the heat from combustion is transferred through the baking surface.