Gray Water Interface Valve for Quiet Vacuum Tank Discharge
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Solution Overview
Problem
Current systems for disposing of gray water in passenger transport vehicles face challenges such as energy inefficiency, maintenance issues, safety hazards, environmental concerns, and noise pollution due to separate disposal requirements for gray and black water, and inability to handle mixed waste effectively.
Innovation Solution
A galley waste disposal system that interfaces with a vacuum waste system, featuring a basin, reservoir, vent line, pressure switch, controller, solenoid valve, and drain valve, which collects and stores gray water before combining it with black water in a septic tank, using a quiet and fail-safe mechanism to prevent backflow and noise during discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gray water is discharged outside the aircraft through drain masts, then the disposal requirement is met, but energy is consumed for heating, maintenance issues arise from clogs, and safety problems occur from hot liquid discharge
Solution Approach 1:
The patent combines gray water disposal with the existing black water vacuum system by introducing a interface valve that allows gray water to be vacuumed into the black water tank. This merging eliminates the need for separate gray water heating and discharge infrastructure, resolving the energy consumption and maintenance issues while maintaining reliable disposal through the proven vacuum system
2Reliability
If gray water is discharged outside the aircraft, then disposal is achieved, but the material paints the side of the plane causing maintenance and cleaning costs
Solution Approach 1:
The interface valve merges gray water disposal with the black water tank system, directing gray water internally rather than externally discharging it. This eliminates the 'painting' effect on the aircraft exterior, reducing maintenance and cleaning costs while maintaining effective waste disposal functionality
3Adaptability or versatility
If a separate tank for gray water is provided, then gray water disposal is enabled, but it is not an economical solution
Solution Approach 1:
The interface valve allows gray water to be disposed of in the existing black water tank without requiring a separate gray water tank. This merging approach maintains the adaptability to handle gray water while significantly reducing device complexity and avoiding the need for additional tanks and associated systems
Solution Approach 2:
The interface valve enables the black water tank to serve multiple functions - handling both black water and gray water disposal. This multi-functionality eliminates the need for separate dedicated gray water storage while maintaining proper disposal capabilities
4Reliability
If gray water and black water are disposed of separately, then health standards are met, but the system complexity and cost increase
Solution Approach 1:
The interface valve merges gray water and black water disposal into a single integrated system where both waste types can be vacuumed into the same tank. This maintains health standard compliance through proper vacuum-based disposal while eliminating the complexity of completely separate disposal systems
Solution Approach 2:
The vacuum system and black water tank are designed to handle both gray water and black water universally. The interface valve enables this multi-functionality, allowing the same infrastructure to comply with health standards for both waste types without requiring entirely separate 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 system enables quiet, efficient, and environmentally friendly disposal of gray water, preventing backflow and reducing maintenance costs by combining gray and black water in the same tank, while minimizing noise and environmental impact.
Implementation Method 1
a vacuum source... The suction is generated either by the pressure differential between the pressurized cabin and the reduced pressure outside of an aircraft
Implementation Method 2
The suction is generated either by the pressure differential between the pressurized cabin and the reduced pressure outside of an aircraft
Data Source
AI summary
Embodiments of the present invention provide systems and methods for a gray water interface valve for use with a vacuum source and a collection tank. The systems and methods comprise a basin for collecting gray water, the basin having an outlet; a reservoir in fluid communication with the outlet, the reservoir adapted to house gray water; a vent line associated with the reservoir; a pressure switch associated with the reservoir, the pressure switch adapted to signal when the reservoir is full; a controller associated with the pressure switch, the controller adapted to begin a discharge cycle by checking and switching on the vacuum source if necessary; a solenoid valve activated by the controller in order to control the flow of vacuum through the system; and a drain valve adapted to open via vacuum pressure and evacuate gray water from the reservoir, wherein the drain valve is adapted to close before all of the gray water from the reservoir is emptied to reduce noise.