Sanitation TRIZ Cases

Microphones, speech recognition, and acoustic guidance enable touchless sanitary cell operation and orientation for visually impaired users.

A movable suction opening near the tank bottom improves emptying of irregular wastewater tanks while limiting blockages and contamination.

A wheelchair-accessible aisle links boarding doors, seating, galleys, and sanitary units to improve inclusion and space use in rail vehicles.

Direct tank-fed fuel cell process water is treated in or after the water tank to meet drinking water quality with less onboard weight and space.

A water tank bypass system with a switching device redirects fresh water to the main drain, preventing complete shutdown during grey water tank malfunctions.

A bi-level rail car uses a selectively lowered intermediate floor to create upper-level lateral circulation pathways.

Controller actuates electronic valve when pressure differential exceeds threshold, reducing flush noise while maintaining suction performance.

An angled vehicle toilet module reduces cabin footprint by orienting the fixture relative to walls and adding a knee accommodation protrusion.

A curved wall toilet compartment block retracts its entry door into the fixed structure to expand internal volume.

Segmented floor rings with flexible seals eliminate solid pans to reduce weight while maintaining liquid-tight integrity in constrained spaces.

Fixed and movable UV LED arrays sanitize wastewater pipe terminals inside an enclosed chamber, eliminating operator exposure to biological hazards.

A fresh water supply valve uses upstream pressure sensing to dynamically adjust opening time for consistent discharge.

A control device coordinates fresh and waste water tank fill levels to prevent overfilling and optimize total vehicle mass.

Segmenting train cars into alternating sanitary and drive zones resolves axle load imbalance while enabling flexible component integration.

Segmented water tanks lower the center of gravity to improve weight distribution, while automated valves prevent overfilling during parallel filling operations.

A rail vehicle car integrates a lift within the entrance door to provide accessible entry for wheelchair users.

Segmented side walls with recesses receive base plate protrusions, simplifying alignment and ensuring moisture-tight assembly.

Vacuum tank conveys black and gray water into one container, eliminating pumps and extra piping for higher-level wastewater collection.

Vacuum toilet system isolates air leaks via control device and isolation valves, maintaining service for functioning lines in two-story vehicles.

A compact toilet cubicle design with a corner-mounted bowl and obstacle-free circular space enables lateral wheelchair access.

Segmented emptying using voltage thresholds and compressed air protects rail vehicle water systems from freezing without depleting the fresh water tank.

A Peltier module cools train lavatories using natural convection currents.

Bypass valve links auxiliary air line to toilet device, increasing emergency flush count beyond main reservoir limits.