Electric Range Air Guide Cross-Section for Heat Sink Cooling
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Solution Overview
Problem
The existing electric range designs face inefficiencies in cooling the heat sink and heat generating elements due to air flow restrictions caused by pressure imbalances within the air guide, leading to inadequate cooling performance.
Innovation Solution
The electric range incorporates an air guide with a structured cross-sectional area expansion from the inlet to the outlet, ensuring air flows smoothly and efficiently cools the heat sink, and includes a heat sink with cooling fins and a flow channel to enhance contact with air for improved cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is heated while passing through the air guide, then the cooling effect on the heat sink is enhanced, but the air pressure at the outlet becomes greater than at the inlet, causing air flow obstruction
Solution Approach 1:
The air guide is divided into multiple sections (first air guide section and second air guide section) with different cross-sectional area characteristics. The first section has a cross-sectional area that increases from inlet to outlet, while the second section has a cross-sectional area that decreases from inlet to outlet. This segmentation allows different portions of the air flow path to have different pressure characteristics, resolving the contradiction between heating air for cooling and maintaining smooth air flow.
Solution Approach 2:
The patent changes the geometric parameters of the air guide, specifically the cross-sectional area distribution along the flow path. By designing the first section with increasing cross-sectional area and the second section with decreasing cross-sectional area, the pressure distribution is optimized to prevent backpressure while still allowing effective heat transfer from the heat sink to the air.
2Productivity
If the cross-sectional area of the air guide is increased to allow smooth air flow, then the cooling efficiency is improved, but the device complexity and space requirement increase
Solution Approach 1:
The air guide is integrated with the heat sink structure, merging two separate components into a unified assembly. The first and second air guide sections are combined with the heat sink body, eliminating the need for separate housing structures and reducing overall device complexity while maintaining effective cooling performance.
Solution Approach 2:
The air guide utilizes vertical dimension by positioning the first air guide section above the heat sink and the second air guide section below the heat sink. This three-dimensional arrangement allows air to flow through the heat sink from top to bottom, maximizing cooling efficiency without requiring excessive horizontal space or complex lateral structures.
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 design enhances the cooling efficiency of the heat sink and heat generating elements by maintaining smooth air flow and increasing contact surface area, effectively preventing overheating and improving the overall performance of the electric range.
Implementation Method 1
a heat sink that cools the heat generating elements producing relatively large amounts of heat
Implementation Method 2
an air blowing fan that blows air into the air guide and air being guided by the air guide passes through the heat sink
Implementation Method 3
an air blowing fan that blows air into the air guide
Implementation Method 4
electric current is supplied to a metallic resistance wire or a non-metallic heat generating element, such as silicon carbide, to generate heat
Implementation Method 5
high-frequency power is supplied to a coil to generate a magnetic field around the coil, and eddy current produced in the generated magnetic field is used to heat an object to be heated made of a metallic material
Implementation Method 6
eddy current produced in the generated magnetic field is used to heat an object to be heated
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
An electric range is provided that may include a case, a cover plate coupled to an upper end of the case and on an upper surface of which an object to be heated is placed, at least one heater disposed under the cover plate and configured to heat an object to be heated, an upper bracket that is disposed under the at least one heater and supports the at least one heater, a base bracket disposed under the upper bracket and on which a printed circuit board is mounted, a heat sink mounted on the printed circuit board, an air blowing fan mounted on the base bracket and configured to discharge air toward the heat sink, and an air guide that communicates with the air blowing fan, surrounds the heat sink, and forms a flow path of air that cools the heat sink.