Electric cleaning device
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Solution Overview
Problem
Conventional electric cleaning apparatuses with filtration separating type dust collecting containers face issues with reduced suction pressure due to filter blockages, necessitating frequent maintenance and limiting the duration of autonomous operation, especially when dealing with large amounts of dust.
Innovation Solution
An electric cleaning apparatus with a station unit equipped with a multistage centrifugal separating system that includes a first and second centrifugal separating portion, allowing for efficient separation and accumulation of dust without significant reduction in suction pressure, combined with a charging function for the autonomous cleaning unit to extend operational periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filtration separating type dust collecting container is used, then dust can be filtered and separated from air, but the filter becomes blocked and suction negative pressure is weakened as dust accumulation increases
Solution Approach 1:
The dust collecting container is divided into multiple compartments: a first dust collecting container with a filter for initial dust collection, and a second dust collecting container for storing transported dust. This segmentation prevents the filter from becoming blocked by large amounts of dust, maintaining suction negative pressure while continuing to provide dust separation capability.
Solution Approach 2:
A dust transport duct with a dust transport opening serves as an intermediary between the first and second dust collecting containers. This intermediary structure allows dust to be transported from the filter compartment to the storage compartment without passing through the filter, preventing filter blockage while maintaining the dust separation function.
2Reliability
If a filter is used to separate dust from air, then dust can be collected, but the openings of the filtering surface become blocked due to sucking of large amount of powder bodies at once
Solution Approach 1:
The system segments dust collection and dust storage into separate containers. The first container with the filter handles dust collection, while the second container handles dust storage. This segmentation allows the filter to continue separating dust from air without becoming blocked, maintaining both dust collection capability and transport productivity.
Solution Approach 2:
The dust transport opening is positioned at a location where dust can be transported without passing through the filter surface. This dimensional change in the transport path allows dust to move from the collection container to the storage container without blocking the filter openings, maintaining both collection and transport capabilities.
3Quantity of substance
If dust accumulates in the dust collecting container, then dust can be stored, but the suction negative pressure is weakened and the capability of transporting dust lowers gradually
Solution Approach 1:
The dust collecting system is segmented into a first container for active dust collection with the filter, and a second container for dust storage. This allows dust to accumulate in the second container without affecting the suction negative pressure in the first container, maintaining transport capability while increasing total dust storage capacity.
Solution Approach 2:
The dust transport duct acts as an intermediary that connects the first and second containers. Dust accumulates in the second container through this intermediary structure without interfering with the filter and suction system in the first container, allowing dust storage without pressure loss.
4Extent of automation
If an autonomous cleaning unit is used for cleaning residential rooms, then autonomous cleaning can be performed, but additional work with a dustpan is necessary for disposing of dust
Solution Approach 1:
The autonomous cleaning unit is merged with a dustpan function by integrating a dust collecting container with storage capacity. The unit autonomously collects dust during cleaning and stores it in the integrated container, eliminating the need for separate dustpan disposal operations and maintaining ease of use.
Solution Approach 2:
The cleaning unit is designed with multi-functionality, serving both as an autonomous cleaner and as a dust collection and storage system. The dust collecting container with transport capability allows the unit to perform cleaning, collect dust, and store it autonomously, providing universal functionality without requiring additional dustpan operations.
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 maintains the suction performance and dust transport capability over a longer period, enabling continuous autonomous operation and efficient disposal of dust without frequent maintenance, even when dealing with large dust loads.
Implementation Method 1
an electric blower which is driven by electric power supplied from the secondary battery and makes negative pressure act on the first dust collecting container
Implementation Method 2
a dust transport duct which is coupled with the autonomous cleaning unit and is fluidically connected to the first dust collecting container, a second dust collecting container which accumulates dust transported for disposal from the first dust collecting container through the dust transport duct
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An electric cleaning apparatus, which comprises an autonomous cleaning unit which moves autonomously over a surface to be cleaned and collects dust, and a station unit which has a charging electrode for the autonomous cleaning unit, wherein the autonomous cleaning unit includes a first body case having a first inlet , a secondary battery which accumulates electric power supplied from the charging electrode, a first dust collecting container which accumulates dust sucked from the first inlet , and an electric blower which is driven by electric power supplied from the secondary battery and makes negative pressure act on the first dust collecting container, and wherein the station unit is provided with a second body case having a second inlet which sucks other dust different from the dust which the autonomous cleaning unit collects.