Switchable Valve Assembly for Wet and Dry Cleaning Apparatus
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Solution Overview
Problem
Conventional cleaning apparatuses for surfaces are cumbersome due to the need for separate attachments for wet and dry cleaning, leading to a large and complex design.
Innovation Solution
A cleaning apparatus with a switchable valve assembly that directs airflow through either a dirty liquid collection assembly or a dry dirt collection assembly, allowing for both wet and dry cleaning functionalities in a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate tubular attachments are used for wet cleaning and dry dirt pick-up, then the cleaning apparatus can perform both wet and dry cleaning functions, but the overall cleaning apparatus becomes relatively large and cumbersome
Solution Approach 1:
The patent implements a single tubular attachment that can perform both wet cleaning and dry dirt pick-up functions by incorporating a valve assembly with switchable configurations. The valve assembly directs airflow through different pathways: in the first configuration, airflow passes through the dirty liquid collection assembly for wet cleaning; in the second configuration, airflow passes through the dry dirt collection assembly for dry dirt pick-up. This multi-functional design eliminates the need for separate attachments, reducing apparatus size while maintaining versatility
Solution Approach 2:
The patent divides the single tubular attachment into functionally separate collection assemblies (dirty liquid collection assembly and dry dirt collection assembly) that are selectively engaged through the valve assembly. This segmentation allows each collection assembly to be optimized for its specific function while sharing the common tubular attachment structure, thereby reducing overall apparatus size compared to having completely separate attachments
2Device complexity
If the airflow path for dry dirt collection passes through the dirty liquid collection assembly, then the apparatus structure is simplified, but the dry dirt collection efficiency is reduced due to interference from the dirty liquid collection assembly
Solution Approach 1:
The patent employs a dynamically switchable valve assembly that can change the airflow configuration between two states. In the first configuration, the valve directs airflow through the dirty liquid collection assembly for wet cleaning operations. In the second configuration, the valve switches the airflow path to bypass the dirty liquid collection assembly and flow directly through the dry dirt collection assembly. This dynamic switching ensures optimal collection efficiency for each function while maintaining a relatively simple overall structure
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 efficient and convenient switching between wet and dry cleaning modes without interference between the two collection systems, reducing the apparatus's bulk and enhancing dry dirt collection efficiency.
Implementation Method 1
a suction system for generating an airflow for drawing dirty liquid or dry dirt from the surface into the cleaning apparatus
Implementation Method 2
a valve assembly switchable between a first configuration and a second configuration, wherein in the first configuration a first flow path for the airflow passes through the dirty liquid collection assembly
Data Source
Figure 1
Figure 2
AI summary
Provided is a cleaning apparatus (100) for cleaning a surface. The cleaning apparatus comprises a suction system (102) for generating an airflow for drawing dirty liquid or dry dirt from the surface into the cleaning apparatus. The cleaning apparatus comprises a dirty liquid collection assembly (112) adapted to collect the dirty liquid, and a dry dirt collection assembly (118) adapted to collect the dry dirt. The cleaning apparatus further comprises a valve assembly (122, 124) switchable between a first configuration and a second configuration. In the first configuration, a first flow path (126) for the airflow passes through the dirty liquid collection assembly to enable collection of the dirty liquid in the dirty liquid collection assembly. In the second configuration, a second flow path for the airflow passes through the dry dirt collection assembly to enable collection of the dry dirt in the dry dirt collection assembly, with the second flow path bypassing the dirty liquid collection assembly.