Cassette Toilet Flushing Head for Sealed Pressurized Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cassette toilet cleaning methods in recreational vehicles are unhygienic, uncomfortable, and incomplete, often requiring manual operation and modifications to the cassette or use of external devices, which are costly and inconvenient.
Innovation Solution
A flushing device designed to fit over the cassette opening, allowing hydraulic connection for pressurized cleaning and sealing the cassette to ensure thorough cleaning, including the gasket and shutter, without modifying the cassette.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cleaning methods are used, then the cleaning process is simple and requires no additional devices, but the cleaning is unhygienic, uncomfortable, and incomplete
Solution Approach 1:
The patent introduces a flushing device as an intermediary tool that connects to the cassette toilet system. This device includes a flushing head that inserts into the cassette opening and uses pressurized water to clean the cassette internally, eliminating the need for manual handling of waste and providing hygienic cleaning conditions.
Solution Approach 2:
The patent employs hydraulic principles by using pressurized water flow to clean the cassette. The flushing device connects to the vehicle's water supply system and directs high-pressure water jets into the cassette to remove waste and clean surfaces, making the cleaning process more effective and hygienic.
2Productivity
If the cassette is rinsed through the discharge tube using a hose, then water can be introduced for cleaning, but air bubbles are created causing water splashes that are dirty and unpleasant
Solution Approach 1:
The patent extracts the cleaning function from the discharge tube and creates a separate dedicated flushing head that inserts directly into the cassette opening. This separate flushing mechanism allows controlled water introduction without the air bubble problems associated with the curved discharge tube configuration.
Solution Approach 2:
Instead of introducing water through the discharge tube from the outside, the patent inverts the approach by inserting a flushing head directly into the cassette opening and directing water flow from the inside, reversing the traditional cleaning approach to eliminate splash problems.
3Reliability
If the main shutter remains closed during rinsing, then the cassette can be sealed, but adequate cleaning of the shutter and its gasket is prevented
Solution Approach 1:
The patent performs preliminary cleaning action on the shutter and gasket by directing water flow from the flushing head onto these components before the cassette is fully sealed. The flushing head is positioned to access and clean the shutter area while the cassette remains accessible.
Solution Approach 2:
The flushing head is designed with multi-functionality, capable of cleaning both the internal cassette surfaces and the shutter/gasket areas. This universal cleaning capability allows the same device to maintain both sealing integrity and cleaning effectiveness without requiring separate operations.
4Extent of automation
If electric macerators or professional automatic devices are used, then cleaning automation is improved, but the device complexity, cost, and installation requirements increase significantly
Solution Approach 1:
The patent implements a self-service cleaning system that utilizes the vehicle's existing water supply and drainage infrastructure. The flushing device connects to standard water outlets and uses the vehicle's own resources to perform cleaning, eliminating the need for complex external equipment or professional installation systems.
Solution Approach 2:
The flushing device is designed to be compatible with standard cassette toilet configurations and can be integrated into existing recreational vehicle systems. It performs multiple functions including flushing, cleaning, and waste removal using the vehicle's existing infrastructure, avoiding the need for specialized expensive equipment.
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 hygienic, efficient, and complete cleaning of the cassette toilet, including all parts, with ease and economy, suitable for standard cassettes without additional tools or professional installation.
Implementation Method 1
allowing hydraulic connection for pressurized cleaning
Data Source
Figure 1~2b(A-A)
Figure 2c~3c
Figure 4a~5
AI summary
A flushing device (1) for cassettes is provided, comprising a first body (2) including a first interface surface (20) extending along a main plane (1b) and adapted to contact at least one wall (10a) of a cassette (10) for cassette toilets to occlude an opening (10b) arranged on the wall (10a); a through-hole (22) transverse to the main plane (1b) and adapted to establish fluid passage communication between the opening (10b) and the exterior when the device (1) is in use with the hole (22) overlapping the opening (10b); and wherein the device (1) further comprises at least one hydraulic connector (31) in fluid passage communication with the hole (22) and configured to allow stable hydraulic connection of the device (1) with a connector of the hydraulic network (100) external to the device (1).