Manifold Control Panel Venting for Cooler Oven Fronts
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Solution Overview
Problem
Conventional cooking appliances with manifold type control panels face issues of increased temperature due to hot air discharge, leading to user safety concerns and increased manufacturing costs, noise, and energy consumption from the use of cooling fans for forced convection.
Innovation Solution
The design incorporates a manifold-type control panel with an air passage on its lower surface to redirect hot air from the cavity into the control panel's interior, utilizing natural convection to minimize temperature increase without the need for a cooling fan, and includes a partition to direct airflow effectively, reducing heat transfer and maintaining user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fan is used for forced convection to cool the control panel, then the temperature of the control panel is reduced, but manufacturing costs, noise, and energy consumption increase
Solution Approach 1:
The control panel cooling system utilizes natural convection currents generated by the oven's heating operation itself. Hot air rising from the cooking cavity automatically circulates through the control panel's air passages without requiring external power, making the system self-cooling and eliminating the need for energy-consuming cooling fans
Solution Approach 2:
The invention extracts the harmful hot air from the cooking cavity and redirects it through dedicated air passages in the control panel. By creating separate airflow paths and extracting heat through the control panel structure itself, the system eliminates the need for mechanical cooling components
2Temperature
If a cooling fan is used for forced convection, then the control panel temperature is reduced, but manufacturing costs increase
Solution Approach 1:
The control panel serves dual functions: it provides user interface controls and simultaneously acts as a heat dissipation structure. The air passages integrated into the control panel body allow it to function both as a operational interface and as a thermal management system, eliminating the need for separate cooling components and reducing manufacturing costs
3Temperature
If a cooling fan is used for forced convection, then the control panel temperature is reduced, but noise increases
Solution Approach 1:
The invention replaces the mechanical cooling fan system with a passive thermal convection system. By substituting mechanical forced convection with natural thermal convection, the system eliminates mechanical noise while maintaining effective heat dissipation from the control panel
4Productivity
If hot air is discharged from the cavity, then cooking function is maintained, but the temperature of the control panel increases due to heat transfer
Solution Approach 1:
The invention introduces air passages as intermediary channels between the cooking cavity and the external environment. These passages allow hot air to be redirected through the control panel structure, using the control panel itself as a heat exchange medium that dissipates heat to the surrounding air while maintaining cooking functionality
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 solution effectively reduces the temperature of the control panel using natural convection, lowering manufacturing costs, noise, and energy consumption while ensuring user safety by minimizing the contact time and area of hot air with the control panel, and maintaining an aesthetically pleasing design.
Implementation Method 1
utilizing natural convection to minimize temperature increase without the need for a cooling fan
Implementation Method 2
reducing heat transfer and maintaining user safety
Data Source
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AI summary
Disclosed is a cooking appliance (200) for preventing an increase in the temperature of a front panel that is operated by a user, more particularly, a manifold type control panel. The cooking appliance (200) includes a cavity (240) for forming a cooking space, a top plate (230) located above the cavity (240) for forming an external appearance of a top side of the cooking appliance (200), a control panel (250) located at a front upper position of the cavity (240) for forming an external appearance of a front side of the cooking appliance (200), the control panel (250) having a knob (255) for user operation, and a door (270) located below the control panel (250) for forming, along with the control panel (250), the external appearance of the front side of the cooking appliance (200), the door (270) being configured to open or close the cavity (240). The control panel (250) includes an air passage (250b) formed in a lower surface (251) thereof, in order to allow hot air inside the cavity (240), discharged through the door (270), to be introduced into an interior of the control panel (250).