Cooking Appliance Heat Dissipation to Prevent Controller Overheating
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Solution Overview
Problem
Cooking appliances with electric or gas cooking units face issues with temperature increase in the circuit board due to heat generated, leading to potential damage and loss of control functionality.
Innovation Solution
The cooking appliance incorporates a heat dissipation system with air introduction holes, guides, and a fan to direct external air through the control panel and ducts, allowing for efficient heat dissipation by differing the air intake and discharge directions, thereby preventing temperature increases in the controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit board is disposed at a rear of the control panel, then the control function can be integrated close to the user interface, but the temperature of the circuit board increases due to heat from cooking units
Solution Approach 1:
The circuit board is extracted from the control panel assembly and disposed in a separate location (rear of the control panel or in the cabinet), physically separating the sensitive electronic component from the heat-generating cooking units while maintaining control functionality through strategic positioning
Solution Approach 2:
A heat dissipation fan is introduced as an intermediary component between the cooking units and the circuit board. The fan actively mediates heat transfer by forcing air flow from the cooking unit area through the circuit board area to a discharge location, protecting the circuit board from direct heat exposure while maintaining operational proximity
2Reliability
If heat dissipation structures are added to protect the circuit board, then the temperature control is improved, but the device complexity increases
Solution Approach 1:
The heat dissipation system utilizes the existing thermal energy from the cooking units as the heat source for the fan's cooling airflow. The system serves itself by using the problem (heat generation) as part of the solution (heat dissipation source), reducing the need for additional active cooling components
Solution Approach 2:
The heat dissipation fan serves multiple functions: it drives airflow for cooling the circuit board, utilizes heat from cooking units, and can be positioned to serve both aesthetic and functional purposes. The air discharge location can also serve dual purposes for both cooling and structural design
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 prevents temperature increases in the controller, preventing damage and ensuring continuous control over cooking units by efficiently dissipating heat through the directed airflow.
Implementation Method 1
a heat dissipation fan disposed or provided between the control panel and the rear wall of the cabinet... driving the heat dissipation fan, external air may be introduced toward the rear of the cabinet... and the external air may be discharged from the cabinet via the controller
Implementation Method 2
Heat generated from at least one selected from the first cooking unit and the second cooking unit may increase a temperature of the circuit board... driving the heat dissipation fan, external air may be introduced toward the rear of the cabinet through the at least one air introduction hole, and the external air may be discharged from the cabinet via the controller
Data Source
AI summary
A cooking appliance is provided that may include a cabinet that defines an external appearance of the cooking appliance, a top plate provided at a top of the cabinet, the top plate being provided with a first cooking device that performs cooking using a heat source, and a second cooking device provided in the cabinet that performs cooking using a heat source. The cooking appliance may further include a control panel provided at a front of the cabinet, the control panel being provided therein with at least one air introduction hole, a controller provided at a rear of the control panel that controls the first cooking device and the second cooking device, and a heat dissipation fan provided between the control panel and a rear wall of the cabinet. A direction in which external air is introduced into the cooking appliance through the at least one air introduction hole and a direction in which the external air is discharged from the cooking appliance may be different from each other.