Bake Oven Heat-Spreading Rack for Uniform Heating
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Solution Overview
Problem
Conventional bake ovens fail to provide uniform heating intensity, leading to inefficient and unsafe baking processes, as large-area foods are not evenly heated, requiring frequent door opening and manual rotation, which wastes energy and poses safety risks.
Innovation Solution
A heat spreading/temperature uniformity device with a movable rack body and heat spreading members arranged in a pattern to distribute heat radiatively within the oven, ensuring uniform heating by adjusting angles and perforations to match the size and volume of the food, thereby addressing low-intensity areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple electrical heating tubes are installed in the bake oven, then the heating capacity is improved, but the heating uniformity deteriorates due to blind corners with weaker heating intensity
Solution Approach 1:
The heating system is segmented into multiple heating tubes positioned at different locations (upper and lower sides) and the heat spreading members are divided into multiple distributed elements arranged on the rack body. This segmentation allows heat to be generated from multiple zones and redistributed uniformly across the baking space, resolving the contradiction between heating capacity and heating uniformity.
Solution Approach 2:
Heat spreading members are introduced as intermediary elements between the heating tubes and the food. These members absorb heat from the heating tubes and re-radiate it to blind corners and areas with weaker heating intensity, acting as a mediator to balance the heating distribution and improve uniformity while maintaining the multi-tube heating capacity.
2Manufacturing precision
If a fan is installed for forced convection, then the heating uniformity is improved, but the device complexity increases
Solution Approach 1:
The mechanical forced convection system (fan) is replaced with a passive thermal radiation system consisting of heat spreading members on the rack body. The rack body with distributed heat spreading members utilizes thermal radiation and natural convection to achieve uniform heating, substituting the mechanical fan system with a simpler thermal management approach that maintains heating uniformity without increasing device complexity.
3Manufacturing precision
If the door is opened frequently to turn over food, then the heating uniformity is improved, but the energy loss increases
Solution Approach 1:
The heat spreading members on the rack body create a self-service heating system where heat is automatically distributed to all areas including blind corners through radiation. The rack body structure with distributed heat spreading members passively ensures uniform heating without requiring manual intervention to open the door and turn over food, thereby maintaining heating uniformity while preventing energy loss from frequent door openings.
4Manufacturing precision
If manual turning of food is performed, then the heating uniformity is improved, but the operation safety deteriorates due to burn risks
Solution Approach 1:
The rack body with distributed heat spreading members provides self-service uniform heating through passive thermal radiation to blind corners and all areas. This eliminates the need for manual turning of food, thereby maintaining heating uniformity while removing the operator from the hot environment and eliminating burn risks associated with manual food handling.
5Manufacturing precision
If the baking process is extended to ensure uniform heating, then the heating uniformity is improved, but the productivity decreases
Solution Approach 1:
The heat spreading members on the rack body enable continuous and uniform heat distribution throughout the baking space from the moment heating begins. The distributed heat spreading members ensure that all areas receive heat simultaneously and continuously without the need for interrupting the baking process to turn over food, thereby achieving heating uniformity while maintaining continuous productive operation and improving overall baking efficiency.
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 device ensures uniform heating intensity and temperature across the oven, reducing baking time and improving safety by eliminating the need for frequent door openings and manual food rotation.
Implementation Method 1
The heat spreading/temperature uniformity device is up and down adjustably disposed in the bake oven for spreading heat over the interior space of the bake oven in the form of heat radiation
Data Source
AI summary
A heat spreading/temperature uniformity device for a bake oven is disclosed. The heat spreading/temperature uniformity device is applicable to the bake oven, including at least one rack body movably disposed in a receiving space defined by the bake oven, and multiple heat spreading members distributed over and arranged on the rack body and integrally connected therewith. Each heat spreading member and the rack body contain a first angle and a second angle. The heat spreading/temperature uniformity device is up and down adjustably disposed in the bake oven for transferring heat to the relatively low heating intensity areas of the receiving space in the form of heat radiation. Accordingly, the food placed in the bake oven can be uniformly heated at a uniform heating intensity and a uniform temperature.