Nested Casing Cooker Venting for Compact Smoke Exhaust
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Solution Overview
Problem
Conventional heating cookers occupy significant space due to their design, necessitating a need for a more compact solution while maintaining effective smoke management and cooking functionality.
Innovation Solution
The design incorporates an outer and inner casing with strategically sized gaps for smoke exhaust, a gas burner system, and splash prevention mechanisms, allowing for a smaller footprint while ensuring efficient smoke removal and reliable ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the heating cooker is made smaller to reduce space occupation, then the compactness is improved, but the smoke exhaust efficiency may deteriorate
Solution Approach 1:
The patent applies nesting by placing the inner casing inside the outer casing, creating a compact layered structure. The exhaust passage is formed within the gap between the inner and outer casings, effectively utilizing the nested space for smoke evacuation without increasing the overall cooker volume.
Solution Approach 2:
The patent introduces a vertical exhaust dimension by forming an exhaust passage that extends upward through the nested casings and connects to a top exhaust outlet. This vertical dimension allows smoke to be efficiently evacuated upward, independent of the horizontal cooking space, resolving the contradiction between compact volume and smoke exhaust capability.
2Volume of moving object
If the gap between inner and outer casings is reduced to minimize space, then the compactness is improved, but the smoke flow path is restricted
Solution Approach 1:
The patent applies local quality by creating different gap sizes in different regions. The exhaust passage region maintains a sufficient gap width to ensure smooth smoke flow, while other regions of the nested casings can have minimal gaps for compactness. This localized optimization allows the exhaust function to operate effectively without compromising overall compactness.
3Object-generated harmful factors
If the exhaust port is enlarged to improve smoke removal, then the exhaust efficiency is improved, but the structural integrity of the outer bottom wall is weakened
Solution Approach 1:
The patent extracts the exhaust function from the outer bottom wall by forming a separate exhaust passage within the nested casing structure. The exhaust port in the outer bottom wall can remain small for structural integrity, while the main exhaust flow occurs through the dedicated passage formed between the inner and outer casings, separating the exhaust function from the load-bearing structure.
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
The compact heating cooker effectively reduces space usage while maintaining efficient smoke management and reliable cooking performance, with narrower gaps minimizing air flow interference and preventing splashing, thus enhancing operational efficiency.
Implementation Method 1
a gas burner; a hot plate above the gas burner
Implementation Method 2
a hot plate above the gas burner
Implementation Method 3
an exhaust mechanism for taking in smoke generated when heating food and discharging the smoke outside the heating cooker
Data Source
AI summary
A smaller heating cooker including an inner casing and an outer casing. The inner casing includes a first inner sidewall, a second inner sidewall, a third inner sidewall, and a fourth inner sidewall. The outer casing includes a first outer sidewall, a second outer sidewall, a third outer sidewall, and a fourth outer sidewall. The size of gap between an inner surface of the first outer sidewall and an outer surface of the first inner sidewall and the size of a gap between an inner surface of the second outer sidewall and an outer surface of the second inner sidewall are smaller than the size of a gap between an inner surface of the third outer sidewall and an outer surface of the third inner sidewall and the size of a gap between an inner surface of the fourth outer sidewall and an outer surface of the fourth inner sidewall.