Oil smoke extraction device, and induction hob integrated cooker
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Solution Overview
Problem
Conventional range hoods occupy large spaces, produce high noise, and require frequent cleaning due to their design and placement above countertops.
Innovation Solution
A fume extracting device with a compact design that mounts under the countertop, featuring a volute fan with a downward-facing air inlet to reduce noise, and a filtering assembly to minimize splashing and ease cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If range hoods are mounted above countertop to suck fume from bottom up, then fume extraction function is achieved, but the device occupies large space and requires large ventilation pipe
Solution Approach 1:
The patent inverts the conventional mounting approach by placing the range hood under the countertop instead of above it. The volute fan is positioned with its air inlet end facing downward to extract fume from below, while the air outlet end directs exhaust upward through the countertop. This inversion resolves the space occupation issue by utilizing the under-countertop space that would otherwise be wasted, achieving compact installation without compromising fume extraction capability.
Solution Approach 2:
The patent changes the spatial dimension of operation by transitioning from vertical upward suction (conventional above-countertop design) to downward-facing air inlet with upward exhaust (under-countertop design). The fume extracting pipe extends horizontally to form a support base that abuts against the countertop, creating a multi-dimensional flow path that optimizes space utilization while maintaining effective fume removal.
2Object-affected harmful factors
If conventional range hoods are designed with upward airflow, then fume extraction is effective, but noise level is high
Solution Approach 1:
The patent inverts the airflow direction by positioning the volute fan's air inlet end to face downward instead of upward. This reversal allows the fan to draw fume from below the countertop while directing exhaust upward, significantly reducing noise propagation into the kitchen space while maintaining effective fume extraction through the optimized flow path.
3Loss of energy
If range hoods are positioned above countertop, then fume suction is direct, but heat loss occurs and gas consumption increases
Solution Approach 1:
The patent inverts the positioning from above-countertop to under-countertop, allowing the range hood to capture heat rising from the cooktop before it dissipates into the kitchen environment. By positioning the air inlet downward and extracting fume at the source level, the system recovers more thermal energy, reducing heat loss and consequently lowering gas consumption required to maintain cooking temperature.
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 device occupies less space, reduces noise levels, and requires less frequent cleaning due to its compact design and efficient filtration system, while also reducing gas consumption by minimizing heat loss.
Implementation Method 1
a volute fan, located inside the box body, wherein an air inlet end in a middle part of the volute fan faces downward
Implementation Method 2
a filtering assembly is disposed inside the support base to filter gases entering the fume extracting pipe from outside
Data Source
AI summary
The present disclosure provides a fume extracting device and an induction cooker integrated stove. The fume extracting device includes: a box body, where a mounting hole is disposed on an upper end surface of the box body; a volute fan, where an air inlet end in a middle part of the volute fan faces downward; a fume extracting pipe, where one end of the fume extracting pipe is inserted upward through the mounting hole and disposed on the box body, and the other end of the fume extracting pipe is in communication with the air inlet end of the volute fan; and a fume exhaust pipe, where the fume exhaust pipe is in communication with an air outlet end of the volute fan. The fume extracting device occupies a small space. Further, the air inlet end of the volute fan faces downward, reducing noise while increasing air pressure. The filtering cup and the strainer can be pulled out for cleaning. Further, a purifying device is connected at the tail end of the fume extracting pipe to perform ozone sterilization and ultraviolet disinfection and the ultraviolet rays can also decompose redundant ozone to prevent ozone pollution to the atmosphere. The mounting hole of the box body can be located at a position such as middle, front side, left side or right side of the upper end surface of the box body to enable the fume extracting pipe to adapt to different working environments. Moreover, the energy saving and emission reduction can be achieved.