oven
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Solution Overview
Problem
Ovens with external cameras struggle to capture the inside of the cooking compartment clearly due to phase diffuse reflection caused by the glass on the door, leading to unclear images.
Innovation Solution
An oven design with a camera positioned above the cooking compartment, featuring a camera cooling fan and multiple glasses to block heat transmission, ensuring clear capture of the compartment's interior while preventing camera overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external camera is used to capture the inside of the cooking compartment through the glass door, then the camera can be positioned outside the high-temperature zone, but phase diffuse reflection occurs causing unclear images
Solution Approach 1:
The camera is extracted from the cooking compartment environment and positioned in the electrical component chamber above the compartment. This separates the camera from the high-temperature zone and from the glass door that causes phase diffuse reflection, allowing clear image capture without the interference of the door glass.
Solution Approach 2:
The first glass and second glass are introduced as intermediary elements between the camera and the cooking compartment. These glasses block heat transmission to the camera while allowing optical signals to pass through, serving as a mediator that protects the camera from thermal damage while maintaining imaging functionality.
2Loss of information
If the camera is positioned above the cooking compartment to avoid glass reflection issues, then image clarity is improved, but the camera temperature increases due to heat from the cooking compartment
Solution Approach 1:
The first glass and second glass serve as thermal intermediaries between the cooking compartment and the camera. They block heat transmission while allowing light to pass through, protecting the camera from thermal damage caused by the high-temperature cooking environment.
Solution Approach 2:
The patent replaces mechanical/physical thermal protection methods (such as distance or insulation) with optical/thermal selective transmission through glass. The glass materials are selected to block infrared heat radiation while transmitting visible light, providing selective thermal protection.
3Temperature
If heat transmission is blocked using glass between the camera and cooking compartment, then camera temperature is controlled, but the structure becomes more complex
Solution Approach 1:
The glass protection system is segmented into multiple components: a first glass positioned at the opening of the cooking compartment and a second glass positioned between the camera and the first glass. This segmentation allows for modular assembly and maintenance while achieving effective heat blocking.
Solution Approach 2:
The second glass is nested within the structure formed by the first glass and the camera housing. The glasses are arranged in a nested configuration where the second glass is positioned inside the space defined by the first glass, creating a compact layered structure for heat blocking.
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 solution allows for clear capture of the cooking compartment's interior and effectively cools the camera to prevent temperature increases, maintaining image quality and extending the camera's lifespan.
Implementation Method 1
a camera cooling fan disposed above the camera and configured to cool the camera by suctioning external air
Implementation Method 2
a first glass provided at the opening of the cooking compartment so that the camera captures the inside of the cooking compartment and configured to block transmission of heat in the cooking compartment to the camera
Implementation Method 3
a second glass provided between the camera and the first glass and configured to additionally block the transmission of heat to the camera
Data Source
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AI summary
An oven comprising: a main body including an inlet configured to suction external air; a cooking compartment provided in the main body and having a front surface thereof is open, the cooking compartment having an opening at a ceiling thereof; a camera; an electrical component chamber; an electrical component chamber cooling fan; and a suction duct including a suction flow path communicating with the inlet and an outlet through which the external air suctioned into the suction flow path and cooling the camera is discharged, wherein the outlet is provided to face the inlet of the electrical component chamber cooling fan.