Vacuum Brush Fan Layout for Strong Suction in a Compact Head
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Solution Overview
Problem
Existing vacuum brooms face limitations in achieving adequate suction power due to the restricted fan diameter caused by the arrangement of the suction motor within the broomstick or handle, leading to either insufficient cleaning power or an unwieldy design.
Innovation Solution
The fan wheel is strategically arranged both inside the handle connection element and the broom body, allowing for a larger diameter and efficient suction power without the need for high-speed operation, with the axis of rotation angled to accommodate a compact and efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the suction motor is arranged in the broomstick or handle, then the device structure is simplified, but the fan diameter is limited and adequate suction power cannot be achieved
Solution Approach 1:
The fan wheel is positioned at the transition between the broom body and handle, utilizing the three-dimensional space at this junction. This dimensional repositioning allows the fan to extend partially into the handle connection element and partially into the broom body, achieving a larger effective diameter without increasing the overall linear dimensions of either component alone.
2Power
If the fan diameter is increased to achieve sufficient suction power, then the cleaning power is improved, but the broom becomes unwieldy and clumsy
Solution Approach 1:
The fan wheel is segmented in its positioning, with part of it located in the handle connection element and part in the broom body. This segmentation allows the large fan diameter to be achieved while distributing its spatial requirements across two components, preventing the broom from becoming unwieldy.
Solution Approach 2:
The fan wheel is nested within the spatial envelope formed by the handle connection element and broom body junction. By utilizing the overlapping volume of these two components, the fan is accommodated without increasing the external dimensions of the broom, maintaining maneuverability while achieving sufficient suction power.
3Power
If the fan operates at high speeds to generate sufficient suction, then the suction power is improved, but a high disruptive noise level is generated
Solution Approach 1:
By changing the geometric parameter of the fan diameter to a larger value, the rotational speed can be reduced for the same suction power output. This parameter change from small diameter/high speed to large diameter/low speed operation reduces the noise level while maintaining adequate suction power.
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 enables a vacuum broom with enhanced suction power and a compact design, reducing noise levels and allowing for a more manageable and versatile cleaning tool.
Implementation Method 1
The rotating fan wheel 13 driven by the electric motor 15 creates a negative pressure which sucks the dirt to be picked up into the receptacle 23.
Data Source
AI summary
The invention relates to a suction brush (1) comprising a handle (3), a brush body, a handle connection element (7), which connects the brush body (5) to the handle (3) and a suction device (11), which comprises a fan impeller (13) that rotates about a rotational axis. The fan impeller (13) is situated both partially inside the handle connection element (7) and partially inside the brush body (5).