Cooktop Fume Extractor Distribution Chamber for Noise Reduction
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Solution Overview
Problem
Existing extractor devices for hobs suffer from noise leakage due to the centrifugal blower and require large installation spaces, which limits their effectiveness and efficiency.
Innovation Solution
The extractor device features a distribution room with an air outlet opening partially limited by sound absorption material, and a blower positioned away from the air outlet, along with a radial blower and odor filters to minimize noise and optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a centrifugal fan is used in the extractor device, then fumes and vapors can be effectively extracted, but noise from the fan escapes through the exhaust opening
Solution Approach 1:
A distribution chamber is introduced as an intermediary component between the centrifugal fan and the exhaust opening. This chamber allows the fan to operate efficiently while preventing direct noise transmission to the exhaust opening, thus mediating between productivity and noise control requirements
Solution Approach 2:
The extractor device is segmented into distinct functional zones: the fan housing containing the centrifugal fan, the distribution chamber for air flow management, and the exhaust opening. This segmentation isolates the noise-generating fan from the exhaust path while maintaining extraction efficiency
2Productivity
If the fan is positioned close to the extraction opening for efficient fume capture, then extraction performance improves, but the device requires considerable installation space
Solution Approach 1:
The distribution chamber utilizes the vertical dimension by extending downward from the extraction opening, allowing the fan to be positioned lower in the furniture structure. This dimensional approach maintains extraction efficiency while reducing the horizontal installation footprint
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 configuration significantly reduces noise levels by absorbing sound with the sound absorption material and minimizes the installation space required, allowing for a more integrated and efficient extractor device solution.
Implementation Method 1
at least partially delimited by sound-damping material
Data Source
Figure 1~3
Figure 2
Figure 4
AI summary
The present invention relates to a range hood device for a cooktop, which range hood device has at least one evacuation opening (30) in the upper side, a fan (32) which is offset toward the bottom relative to the evacuation opening (30) and a connecting channel (34) between the evacuation opening (30) and the fan (32). The range hood device (3) is characterized in that a divider compartment (312) is provided after the fan (32) in the direction of flow, said divider compartment having at least one air outlet opening (313) and being limited at least in part by sound-absorbing material (315, 316). In addition, the invention relates to kitchen furniture having at least one cooktop. The kitchen furniture (1) is characterized in that at least one such range hood device (3) is integrated into the kitchen furniture (1).