Door-Side Cooling Air Inlet for Low-Loss Cooking Devices
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Solution Overview
Problem
Conventional cooking devices with air inlets at the back of water tanks increase pressure loss in cooling air passages, requiring large and expensive cooling fans, and make it difficult to design shorter devices due to heat transfer issues with resin components.
Innovation Solution
A cooking device design with a cooling air passage between the heating chamber and water storage tanks, featuring an air inlet on the door side to introduce cooling air, which reduces pressure loss and allows for a smaller, more inexpensive cooling fan, and positions the air inlet to protect resin components from heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the air inlet is provided at the back of the water storage tank, then the cooling air passage is formed, but the pressure loss increases and cooling efficiency decreases
Solution Approach 1:
The air inlet position is inverted from the conventional back position to the door side (front position). This inversion allows cooling air to enter from the front and flow through the cooling air passage between the heating chamber and water storage tank, reducing pressure loss and improving cooling efficiency while enabling the use of a smaller cooling fan.
2Reliability
If a certain distance is secured between the heating chamber and water supply tank, then resin tank deformation is prevented, but the overall height increases
Solution Approach 1:
A cooling air passage is introduced as an intermediary element between the heating chamber and water storage tank. This passage allows cooling air to flow and protect the resin tank from heat while enabling the tank to be positioned closer to the heating chamber, thereby reducing the overall height without compromising deformation prevention.
3Reliability
If a large and high-power cooling fan is used, then cooling efficiency is maintained, but device cost and size increase
Solution Approach 1:
The air inlet position parameter is changed from the back to the door side, which fundamentally alters the cooling air flow characteristics. This parameter change reduces pressure loss in the cooling passage, allowing a smaller and less powerful cooling fan to achieve the same cooling efficiency, thereby reducing device complexity and cost.
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 enables a shorter overall height for cooking devices while maintaining cooling efficiency and preventing resin component deformation, allowing for easier protection of internal electric components and flexibility in water storage tank capacities.
Implementation Method 1
This design reduces pressure loss in the cooling air passage
Implementation Method 2
to prevent deformation of the water supply tank made of resin by heat transferred from a heating chamber
Data Source
AI summary
Cooking device includes heating chamber with door for housing object to be heated, vapor generator for supplying vapor into heating chamber, and water storage tank. Cooking device further includes cooling air passage provided between heating chamber and water storage tank and allowing cooling air to pass therethrough, and air inlet provided to the side of door and introducing cooling air into cooling air passage. This enables cooling, using a smaller and more inexpensive cooling fan. As a result, cooking device is made shorter in overall height.