Cleaning device having a nozzle for cleaning a surface
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Solution Overview
Problem
Current single rotating wet brush floor cleaning devices face issues with dirt particles being scattered unpredictably due to high rotation speeds, leading to ineffective cleaning as they are not efficiently picked up by the vacuum airflow and often re-deposited on the floor.
Innovation Solution
A nozzle arrangement with a rotatable brush and deflector elements, where a first deflector surface interacts with the brush to release dirt and liquid particles, and a second deflector surface oriented transverse to the first deflects these particles into an exhaust channel, ensuring controlled guidance and prevention of re-deposition on the floor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high rotation speeds are used for the brush, then cleaning speed is improved, but dirt particles are scattered unpredictably and not efficiently picked up by vacuum airflow
Solution Approach 1:
The patent introduces an intermediary structure (the housing with controlled airflow path and suction opening) that mediates between the high-speed rotating brush and the vacuum airflow. This intermediary ensures that dirt particles launched by the brush are systematically directed into the suction opening rather than scattered randomly, resolving the contradiction between high cleaning speed and effective dirt pickup.
2Reliability
If large vacuum aggregates are used to provide high suction power, then dirt pickup capability is improved, but device size, cost, and energy consumption increase
Solution Approach 1:
The patent employs dynamic airflow control within the housing, where the airflow path and suction opening are positioned and dimensioned to dynamically capture dirt particles as they are launched by the rotating brush. This dynamic system allows effective dirt pickup with reduced suction power compared to static high-power vacuum systems, lowering energy consumption while maintaining reliability.
3Device complexity
If a single rotating brush is used, then device complexity is reduced, but dirt particles are scattered within the housing in an unpredictable way
Solution Approach 1:
The housing acts as an intermediary structure that contains and controls the airflow pattern around the single rotating brush. By designing the housing with specific airflow paths and a strategically positioned suction opening, the system maintains structural simplicity while ensuring predictable dirt particle trajectories into the suction opening, resolving the contradiction between simplicity and reliability.
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 solution effectively directs dirt and liquid particles into the exhaust channel, enhancing cleaning performance by preventing scattering and re-deposition, while reducing the need for large, energy-intensive vacuum aggregates, resulting in a more efficient and cost-effective cleaning process.
Implementation Method 1
brush elements with tip portions for contacting a surface to be cleaned and picking up dirt and/or liquid particles from the surface during the rotation of the brush
Implementation Method 2
first deflector element with a first deflector surface that extends substantially parallel to the brush axis, wherein the first deflector surface is configured to interact with the brush during the rotation of the brush for releasing the picked-up dirt and/or the liquid particles from the brush
Implementation Method 3
second deflector element that is spaced apart from the brush and the first deflector element, the second deflector element comprising a second deflector surface that is oriented transverse to the first deflector surface, wherein the second deflector surface is configured to deflect the dirt and/or liquid particles, which are released from the brush at the first deflector surface, into an exhaust channel
Implementation Method 4
An under-pressure, usually generated by a vacuum aggregate, is used to ingest the collected dirt particles and liquid
Data Source
AI summary
A nozzle arrangement including a brush provided with brush elements having tip portions for contacting a surface and picking up dirt and/or liquid during rotation of the brush about a brush axis, a driving mechanism for rotating the brush, a first deflector element with a first deflector surface that extends substantially parallel to the brush axis and that interacts with the brush during the rotation of the brush for releasing the picked-up dirt and/or the liquid particles, and a second deflector element that is spaced apart from the brush and the first deflector element, the second deflector element having a second deflector surface that is oriented at an angle to the first deflector surface, wherein the second deflector surface deflects the dirt and/or liquid particles, which are released from the brush at the first deflector surface, into an exhaust channel that begins between the first and second deflector elements.