Vacuum Cleaner Filter Valve for Continuous Suction Cleaning
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Solution Overview
Problem
Vacuum cleaning devices face challenges in efficiently cleaning filters without interrupting suction operation, as existing solutions require complex valve mechanisms or complete shutdown during filter cleaning.
Innovation Solution
A vacuum cleaning device design featuring a closing valve with a long sealing line that abruptly opens to allow external air to flow countercurrently through the filter, reducing mechanical load and enabling quick filter cleaning with minimal suction interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a closing valve is opened to allow external air to flow through the filter for cleaning purposes, then the filter can be cleaned effectively, but suction operation must be completely interrupted
Solution Approach 1:
The filter is divided into multiple subregions, and the closing valve mechanism is designed to supply external air to only one subregion at a time. This segmentation allows one portion of the filter to be cleaned while other portions continue to perform suction function, thereby maintaining overall suction operation continuity while achieving effective filter cleaning
Solution Approach 2:
Instead of cleaning the entire filter at once (which would completely interrupt suction), the system applies partial action by cleaning only a subregion of the filter at each cycle. This partial cleaning approach maintains sufficient filtering capacity during operation while still achieving the necessary cleaning effect over time
2Manufacturing precision
If external air is supplied to clean the entire filter at once, then cleaning is effective, but the closing valve mechanism becomes complicated
Solution Approach 1:
The filter surface is segmented into multiple subregions, each可控 by the closing valve mechanism. The valve body is designed with multiple sealing lines that can selectively open to different subregions. This segmentation simplifies the valve mechanism compared to designing a complex system to distribute air to the entire filter surface simultaneously, as each subregion can be addressed independently through simpler valve configurations
Solution Approach 2:
The closing valve operates periodically, sequentially opening to different subregions in a cyclic manner. This periodic action allows a relatively simple valve mechanism to achieve complete filter cleaning over time, avoiding the need for complex simultaneous multi-point air distribution systems
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 design allows for effective filter cleaning within a short time with virtually no interruption in suction operation, maintaining constant suction power and efficiency.
Implementation Method 1
at least one sealing line delimiting an area which, in the closed position of the closing valve, is acted upon by a differential pressure
Implementation Method 2
external air, which can flow into the suction line via the external air inlet downstream of the filter, against the direction of flow which forms during suction operation
Data Source
AI summary
The invention relates to a vacuum cleaning device comprising a dirt collection container which has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one suction line, and comprising at least one external air inlet which opens into the suction line downstream of the at least one filter and is adapted to be closed by means of at least one closing valve, the closing valve having a movable valve body which, in a closed position, bears against at least one valve seat so as to form one or more sealing lines, the at least one sealing line delimiting an area which, in the closed position of the closing valve, is acted upon by a differential pressure. In order to develop the vacuum cleaning device in such a way that the at least one closing valve is of structurally simple design and the at least one filter can be completely cleaned within a short period of time, the invention proposes that the square of the total length of all sealing lines is at least 25 times the total size of all areas which are delimited by the sealing lines and acted upon by a differential pressure.