Pull-out heating cooking apparatus
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Solution Overview
Problem
The existing pull-out heating cooking apparatus does not have a configuration for cooling the outer surface of the heating chamber, leading to increased temperature when the rapid hot air heating function is used, which can affect electrical and structural components.
Innovation Solution
Incorporating a fan and air circulation system with through holes in the panel of the heating chamber to create air intake and exhaust spaces between the outer and inner surfaces, guiding air to cool the components and prevent temperature increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rapid hot air heating function is used, then the heating efficiency is improved, but the temperature of the outer surface of the heating chamber increases
Solution Approach 1:
The gap between the heating chamber outer surface and main body outer case is segmented into two functional spaces: a first space for air intake and cooling, and a second space for air exhaust. This segmentation allows differentiated temperature control zones that enable efficient heating while managing outer surface temperature
Solution Approach 2:
Air is introduced as an intermediary cooling medium between the heating chamber and the main body outer case. The air flows through the first space to cool the heating chamber outer surface, then exits through the second space, acting as a thermal buffer that prevents heat transfer to the main body
2Speed
If the rapid hot air heating function is used, then the heating speed is improved, but the durability of electrical and structural components deteriorates
Solution Approach 1:
The cooling air circulation system operates in advance and concurrently with the heating function to prevent temperature buildup. By establishing the cooling path through the first and second spaces before and during heating, the system proactively protects components from thermal damage
Solution Approach 2:
The air circulation system serves as a protective intermediary between the high-temperature heating chamber and the temperature-sensitive electrical and structural components. The air absorbs and carries away heat, preventing direct thermal exposure to vulnerable components
3Temperature
If a cooling system is added to the heating chamber, then the temperature control is improved, but the device complexity increases
Solution Approach 1:
The fan serves multiple functions: it circulates air through the first space to cool the heating chamber outer surface, drives air through the second space for exhaust, and maintains overall air circulation within the apparatus. This multi-functionality reduces the need for separate cooling and ventilation systems
Solution Approach 2:
The cooling function is merged with the existing air circulation system. The first space and second space are integrated into the overall apparatus structure, utilizing the gap between the heating chamber and main body outer case rather than adding separate cooling chambers or insulation layers
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 suppresses the increase in temperature around the outer surface of the heating chamber, ensuring the durability and performance of temperature-regulating components.
Implementation Method 1
The fan takes in air from the first through hole part to the first space, and circulates the air to the fan via the first space. The fan blows out the air to the second space, and circulates the air to the second through hole part via the second space.
Implementation Method 2
The fan takes in air from the first through hole part to the first space, and circulates the air to the fan via the first space. The fan blows out the air to the second space, and circulates the air to the second through hole part via the second space.
Implementation Method 3
The microwave supply unit supplies microwaves into the heating cooking chamber.
Implementation Method 4
The microwave supply unit supplies microwaves into the heating cooking chamber.
Implementation Method 5
The air sending unit supplies hot air into the heating cooking chamber.
Data Source
AI summary
A pull-out heating cooking apparatus (1) includes a heating chamber (10), a drawer body (11), a fan (21), a microwave supply unit (14), an air sending unit (15), and a main body outer case (40). The heating chamber (10) includes a panel (100) provided with a first through hole part (100B) and a second through hole part (100C) are formed. In the heating chamber (10), a first space (S1) and a second space (S2) are formed between an outer surface of the heating chamber (10) and an inner surface of the main body outer case (40). The fan (21) takes in air from the first through hole part (100B) to the first space (S1), and circulates the air to the fan (21) via the first space (S1). The fan (21) blows out the air to the second space (S2) and circulates the air to the second through hole part (100C) via the second space (S2).