Rear-Wall Burner Cover Layout for Stable Oven Flame
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Solution Overview
Problem
Existing cooking devices with burners installed under the oven chamber face issues such as contamination from food leftovers, difficulty in cleaning, reduced cavity capacity, and flame backfire or extinguishment due to pressure changes when the oven door is opened and closed.
Innovation Solution
A cooking device design featuring a burner assembly installed at the rear wall of the frame, with a combustion chamber and air flow paths that include larger holes for air introduction and discharge, and a fan to manage air flow, along with a blocking wall to prevent foreign substances from entering the cooking chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the burner chamber is provided under the oven chamber to enable convective heating, then heating efficiency is improved, but food leftovers may be introduced into the burner chamber causing contamination
Solution Approach 1:
The burner assembly is segmented from the oven chamber by providing it at the rear wall rather than under the chamber. The burner cover creates a separate combustion chamber that is physically isolated from the cooking space, preventing food contamination while maintaining convective heating capability through controlled air flow paths.
Solution Approach 2:
The burner cover acts as an intermediary structure that separates the burner from the oven chamber. It provides a dedicated combustion chamber with controlled air intake and exhaust paths, mediating between the need for efficient heating and the requirement to prevent contamination from food particles.
2Use of energy by moving object
If the burner is installed under the oven chamber, then convective heating is achieved, but cleaning the oven chamber becomes difficult due to the opening in the bottom surface
Solution Approach 1:
The burner assembly is segmented and positioned at the rear wall of the oven chamber rather than under it. This eliminates the need for an opening in the bottom surface, providing a continuous, flat surface that is easy to clean while maintaining the convective heating function through the burner cover's air flow design.
3Use of energy by moving object
If the burner is installed under the oven chamber, then heating function is provided, but the cavity capacity is reduced by the burner installation space
Solution Approach 1:
The burner installation is moved from a vertical arrangement (under the oven chamber) to a horizontal arrangement (at the rear wall). This dimensional change allows the burner to be positioned in the rear wall space rather than occupying volume within the cooking cavity, thereby maintaining full cavity capacity while providing the heating function.
4Ease of operation
If the oven door is opened and closed during burner operation, then access to the oven chamber is enabled, but pressure changes cause flame backfire or extinguishment
Solution Approach 1:
The burner cover serves as an intermediary structure that isolates the flame from direct pressure changes in the oven chamber. By providing a separate combustion chamber with controlled air intake paths, it mediates the effect of door opening/closing pressure fluctuations, preventing flame backfire and extinguishment while allowing normal door operation.
Solution Approach 2:
The burner cover design anticipates pressure changes from door operation and provides a cushioning effect through its enclosed combustion chamber and air flow paths. This pre-established structure absorbs and mitigates the impact of pressure fluctuations before they can affect the flame stability.
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 design prevents contamination, enhances cleaning ease, maintains cavity capacity, and stabilizes the flame by managing pressure changes, reducing the likelihood of backfire or extinguishment.
Implementation Method 1
a burner located in the burner cover to generate a flame
Implementation Method 2
The cooking device may further comprise a fan disposed between the burner cover and the frame
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cooking device (1) includes a frame (21) forming a cooking chamber (22); a door (25) opening and closing the cooking chamber (22); a burner cover (140, 160) disposed in the cooking chamber (22); and a burner (110) located in the burner cover (140, 160), the burner (110) generating a flame, wherein the burner cover (140, 160) is provided with a first hole (172) providing a path through which air flows, and the frame (21) is provided with a second hole (36) communicating with the first hole (172), the second hole (36) providing a path through which the air flows.