Cooking Appliance Airflow Layout for Controller Heat Protection
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Solution Overview
Problem
Cooking appliances often suffer from increased temperatures of their circuit boards due to heat generated from cooking units, leading to potential damage and loss of control functionality.
Innovation Solution
A cooking appliance design that incorporates a heat dissipation system with a fan to direct external air through a specific air flow channel structure, ensuring air is introduced and discharged in different directions to efficiently dissipate heat away from the controller, preventing temperature increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit board is disposed at the rear of the control panel near the cooking units, then it can be conveniently positioned for control functions, but the temperature of the circuit board increases due to heat from cooking units
Solution Approach 1:
The harmful heat from the cooking units is extracted and redirected away from the circuit board through the air flow channel system. The air intake at the front and exhaust at the rear creates a dedicated cooling pathway that separates the heat source (cooking units) from the sensitive component (circuit board), preventing heat accumulation while maintaining convenient control board positioning.
Solution Approach 2:
Air is introduced as an intermediary cooling medium between the heat-generating cooking units and the heat-sensitive circuit board. The air flows through the defined air flow channel, absorbing heat from the cooking units and dissipating it away from the circuit board, thereby protecting the controller without requiring physical separation or additional shielding structures.
2Reliability
If a fan is added to drive air flow for cooling, then heat dissipation efficiency improves, but device complexity increases
Solution Approach 1:
The cooling function is merged with the existing air flow path of the cooking appliance. The air intake hole is positioned at the front panel, and the air exhaust hole at the rear, utilizing the natural front-to-rear air flow direction of the appliance structure. This integration allows the cooling system to use the appliance's existing spatial configuration, reducing the need for separate cooling ducts or complex airflow management components.
Solution Approach 2:
The cooling system utilizes the appliance's own operational characteristics - the fan that operates during cooking provides the driving force for air circulation through the cooling channel. The same fan that powers the cooking units also drives the cooling air flow, eliminating the need for a separate dedicated cooling fan and reducing overall system complexity while maintaining effective heat dissipation.
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
Effectively prevents temperature rises in the controller, thereby preventing damage and ensuring continuous operation of the cooking appliance.
Implementation Method 1
a fan, configured to drive the external air
Implementation Method 2
heat generated from at least one selected from between the first cooking unit and the second cooking unit may increase the temperature of the circuit board
Data Source
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AI summary
A cooking appliance (100) is disclosed. The cooking appliance (100) includes a cabinet (110) defining the external appearance of the cooking appliance (100), a top plate (130) disposed at the top of the cabinet (110), the top plate (130) being provided with a first cooking unit (120) for performing cooking using a heat source, and a second cooking unit (140) provided in the cabinet (110) for performing cooking using a heat source. The cooking appliance (100) further includes a control panel (150) disposed at the front of the cabinet (110), the control panel (130) being provided therein with at least one air introduction hole (159), a controller (C) disposed at the rear of the control panel (150) for controlling the first cooking unit (120) and the second cooking unit (140), and a heat dissipation fan (101) disposed between the control panel (150) and the rear wall (115) of the cabinet, wherein a direction in which external air is introduced into the cooking appliance (100) through the at least one air introduction hole (159) and a direction in which the external air is discharged from the cooking appliance (100) are different from each other.