Carbon Heater Oven Reflector Structure to Prevent Grate Deformation
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Solution Overview
Problem
Existing electric ovens with carbon heaters often damage the grate due to radiant energy, and lack effective reflectors for various shape-heaters, leading to inefficient food preparation.
Innovation Solution
An electric oven design featuring a grate fixed to a reflector with communication holes angled to prevent interference with the carbon heater, allowing efficient radiant energy transfer while preventing grate deformation, and a reflector shaped to accommodate heaters of different shapes, including straight and curved line parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the grate size is increased to match the carbon heater size, then the heating coverage is improved, but the grate is deformed thermally due to radiant energy
Solution Approach 1:
The reflector is introduced as an intermediary component between the carbon heater and the grate. It redirects radiant energy away from the grate while maintaining heating coverage, allowing the grate to be larger without thermal deformation. The reflector acts as a mediator that manages the radiant energy distribution.
2Power
If a bar-type heater is used, then the heating function is achieved, but the reflector or heater cover must be shaped specifically for that heater type, reducing versatility
Solution Approach 1:
The reflector is designed with a universal shape that can accommodate various types of heaters (carbon heaters, bar-type heaters, etc.). The standardized reflector geometry allows different heater configurations to be used without requiring custom-shaped reflectors or heater covers, thereby achieving multi-functionality and versatility.
3Productivity
If the grate is positioned close to the carbon heater for efficient heating, then cooking efficiency is improved, but the grate is exposed to excessive radiant energy causing damage
Solution Approach 1:
The reflector serves as a mediator that manages radiant energy between the carbon heater and the grate. It allows the grate to be positioned close to the heater for efficient cooking while redirecting excessive radiant energy away from the grate, preventing thermal damage.
Solution Approach 2:
The reflector creates localized zones of different radiant energy intensity. Directly behind the reflector, the radiant energy is redirected away from the grate, while other areas maintain high heating intensity for efficient cooking. This spatial differentiation of energy distribution solves the contradiction.
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 design prevents grate damage and ensures efficient radiant energy transfer, allowing for effective cooking with various shape-heaters by securely fixing the grate to the reflector and optimizing the reflector's shape for energy reflection.
Implementation Method 1
a carbon heater for providing radiant energy to the inside of a cooking room through the communication opening
Implementation Method 2
a reflector for reflecting the radiant energy from the carbon heater to the inside of the cooking room
Data Source
AI summary
The present invention relates to an electric oven. The electric oven according to an embodiment of the present invention includes a cavity which is provided with an oven chamber, a door for opening and closing alternatively the oven chamber, a carbon heater for providing radiant energy to the inside of a cooking room through the communication opening, a reflector for reflecting the radiant energy from the carbon heater to the inside of the cooking room, anda grate which is fixed to the reflector and is disposed on the communication opening and is provided with a forming section a part of which is formed toward the reflector. Therefore, the grate can be prevented from being damaged according to the electric oven of the present invention.