Surface Cleaning Head With Fixed Nozzle for Corner Cleaning
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Solution Overview
Problem
Existing surface cleaning heads find it difficult to effectively clean corner areas due to the circular movement of rotating nozzles, which limits their ability to target and clean these regions efficiently.
Innovation Solution
Incorporation of an additional non-rotatably mounted nozzle within the surface cleaning head's hood-shaped housing, which allows for targeted cleaning of specific areas, including corners, by directing a jet of liquid outside the circular path defined by the rotating spray arms, along with a switching device to control the flow of pressurized cleaning liquid to either the rotating nozzles or the additional nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nozzles are mounted on rotating spray arms to clean large areas quickly, then productivity is improved, but the ability to clean corner areas deteriorates
Solution Approach 1:
The cleaning system is segmented into two distinct nozzle types: rotating nozzles on spray arms for general area cleaning, and a stationary additional nozzle for corner area cleaning. This segmentation allows each nozzle type to specialize in its optimal cleaning function, resolving the contradiction between overall productivity and corner area accessibility.
Solution Approach 2:
The surface cleaning head achieves multi-functionality by integrating both rotating nozzles (for large area coverage) and a stationary additional nozzle (for corner areas) within a single device. This universal design enables the cleaning head to handle both open areas and corner regions effectively, eliminating the need for separate cleaning operations.
2Ease of operation
If an additional stationary nozzle is added to clean corner areas, then corner cleaning capability is improved, but device complexity increases
Solution Approach 1:
The additional stationary nozzle is merged with the existing housing structure through the V-shaped attachment part, which integrates the nozzle mounting into the overall device architecture. This combining approach adds the necessary corner cleaning function while minimizing the increase in device complexity by utilizing existing structural elements.
Solution Approach 2:
The V-shaped attachment part extends the housing in a new spatial dimension, creating an attachment space that accommodates the additional nozzle without interfering with the rotating spray arms. This dimensional extension allows the stationary nozzle to occupy a unique spatial niche, enabling corner cleaning without complicating the core rotating mechanism.
3Ease of operation
If the housing is extended to accommodate the additional nozzle, then corner cleaning access is improved, but the device size increases
Solution Approach 1:
The V-shaped attachment part introduces an asymmetric extension to the otherwise circular housing, creating a focused directional protrusion that targets corner areas specifically. This asymmetric design provides the necessary access to corners without requiring a proportional increase in the overall housing size, as the extension is localized rather than uniform.
Solution Approach 2:
The housing extension is applied locally at the specific region where corner cleaning is needed, rather than uniformly increasing the entire housing size. The V-shaped attachment part creates a localized structural modification that provides corner access precisely where required, maintaining compact dimensions in other areas of the device.
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
Enables effective cleaning of corner areas and other specific regions, allowing for efficient application of cleaning fluid with the option to use high-pressure cleaning for loosening dirt followed by low-pressure rinsing, simplifying handling through intuitive actuation of the switching device.
Implementation Method 1
The nozzle experiences a recoil, causing the spray arm to rotate.
Implementation Method 2
The jet of liquid emitted by the additional nozzle hits the surface to be cleaned outside the circular area defined by the nozzle rotating together with the respective spray arm.
Data Source
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AI summary
The invention relates to a surface cleaning head (10) comprising a hood-shaped housing (11) that is open towards the base, at least one spray arm (85, 86) that is mounted in a freely rotatable manner about a rotatable axis that is mounted in said housing. Said spray arm bears a nozzle (91) that can be impinged with a pressurised cleaning fluid and which rotates about the rotational axis together with the spray arm in order to impinge the surface that is to be cleaned with a liquid jet. The aim of the invention is to further develop the surface cleaning head in such a manner that corner areas of the surface that is to be cleaned are also subjected to a pressurised fluid in a simple manner. As a result, the surface cleaning head comprises an additional nozzle (80) that is rotationally fixed and that can be impinged upon with a pressurised cleaning fluid.