Wet cleaning apparatus
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Solution Overview
Problem
Wet vacuum cleaners face challenges in separating liquid from airflow during back and forth movement, leading to potential re-entrainment of water into the motor, which can cause damage and compromise the reliability of the device.
Innovation Solution
A wet cleaning apparatus with a water directing member that protrudes from the side of the container to inhibit water sloshing and prevent water droplets from entering the air passage, combined with an internal wall to guide collected water away from the air passage, ensuring efficient separation and protection of the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wet vacuum cleaner moves back and forth during cleaning, then the cleaning coverage is improved, but water collected in the container may be re-entrained in the separated airflow
Solution Approach 1:
A water directing member is introduced as an intermediary element between the water collection area and the air passage. This member protrudes into the container from the side portion and directs water flow away from the air passage, preventing re-entrainment while allowing continued back-and-forth movement for cleaning
Solution Approach 2:
The air passage is positioned spatially separated from the bottom of the container, creating a three-dimensional separation between the water collection zone and the air flow path. This dimensional arrangement ensures that even when water sloshes during movement, it cannot easily reach the air passage
2Productivity
If the container is made larger to collect more water, then the cleaning efficiency is improved, but the water may more easily reach the air passage during movement
Solution Approach 1:
The water directing member acts as a protective intermediary that extends from the side portion into the container, creating a physical barrier that intercepts and redirects water flow before it can reach the air passage, regardless of container size
Solution Approach 2:
The container interior is segmented into distinct functional zones: a water collection zone at the bottom, a separation zone with the water directing member, and an air passage zone. This segmentation prevents water from crossing into the air passage area even when the container is large
3Reliability
If the separator unit is made more complex to improve separation performance, then the water-air separation is improved, but the device complexity increases
Solution Approach 1:
The separator unit employs segmented structural elements including a labyrinthine path with multiple bends and a cyclone chamber divided into rotational and separation zones. This segmentation creates effective water-air separation through sequential physical processes without requiring overly complex mechanisms
Solution Approach 2:
The separator unit utilizes pneumatic principles where the cyclone chamber creates rotational airflow that separates water droplets from air through centrifugal force. The labyrinthine path uses pressure differentials and flow direction changes to achieve separation, avoiding mechanical moving parts
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 prevents water droplets from re-entraining into the airflow, enhancing the reliability and durability of the wet vacuum cleaner by ensuring that water remains in the container and does not reach the motor, even during tilting and movement.
Implementation Method 1
a separator unit for separating water from a flow of air generated by the suction
Implementation Method 2
the water directing member inhibits the water sloshing against the side portion from continuing to move along the side portion towards the air passage
Data Source
AI summary
A wet cleaning apparatus includes a cleaner head having a dirt inlet. A motor and fan deliver suction to the dirt inlet. Further, the wet cleaning apparatus includes a separator unit for separating water from a flow of air generated by the suction. The separated water is collected in a container having a top and a bottom, and a side portion extending there between. The separated air is passed out of the container towards the motor and fan via an air passage. The air passage is spatially separated from the bottom of the container. The water collected in the container sloshes against the side portion of the container when a user is pushing the cleaner head and the container forward. A water directing member sealingly adjoins the side portion, and protrudes into the container backwards from the side portion, thereby to inhibit the water sloshing against the side portion.