Self-sustaining washroom for mobile use

1. A sanitary device for a conveyance, comprising:

a sanitary module;

a supply system;

wherein the sanitary module is adapted for being set up replaceably in a cabin area of the conveyance; and

the supply system is set up in the sanitary module, so that the sanitary module is operable autonomously;

wherein the sanitary module has electrical consumer elements;

the supply system also has a power supply unit;

the power supply unit is set up to supply the electrical consumer elements with power;

wherein the power supply unit has a fuel-cell system having an anode side and a cathode side and a hydrogen tank with a metal hydride accumulator chargeable with hydrogen;

wherein cabin air may be fed to the cathode side and hydrogen may be fed to the anode side from the hydrogen tank;

wherein the supply system has a cooler element;

wherein the cooler element is set up in heat-conductive contact with the metal hydride accumulator;

wherein the metal hydride accumulator discharges hydrogen and cools down in an operating state of the fuel-cell system; and

wherein the metal hydride accumulator is set up to cool the cooler element.

2. The sanitary device of claim 1 ,

wherein the sanitary module has multiple wall elements, a ceiling element, and a floor element;

the multiple wall elements, the ceiling element, and the floor element form an internal chamber; and

at least one of the multiple wall elements has a door area.

3. The sanitary device of claim 2 ,

wherein at least one of the multiple wall elements comprises a cabin element of the cabin area.

4. The sanitary device of claim 1 ,

wherein the sanitary module has a washbasin element and a toilet element;

the supply system has a freshwater container and a wastewater container;

the freshwater container is set up to supply at least one of the washbasin element and the toilet element; and

the wastewater container is set up to receive wastewater from at least one of the washbasin element and the toilet element.

5. The sanitary device of claim 4 ,

wherein the supply system also has a clear water container and a gray water container having a treatment unit;

the gray water container is set up to receive wastewater of the washbasin element;

the treatment unit is set up to treat the wastewater to form clear water and feed it to the clear water container; and

the clear water container is set up to provide the clear water to the toilet element for flushing.

6. The sanitary device of claim 5 ,

wherein at least one of the freshwater container, the wastewater container, the clear water container, and the gray water container is set up replaceably in the sanitary module.

7. The sanitary device of claim 6 ,

wherein at least one of the freshwater container, the wastewater container, the clear water container, and the gray water container has conveyor elements.

8. The sanitary device of claim 1 ,

wherein the fuel-cell system has a low temperature fuel cell.

9. The sanitary device of claim 1 ,

wherein the supply system has a replaceable hydrogen tank.

10. The sanitary device of claim 1 ,

wherein the cooler element is set up in heat-conductive contact with the fuel-cell system; and

wherein the cooler element is set up to cool the fuel-cell system.

11. The sanitary device of claim 1 ,

wherein the supply system has a condenser;

the condenser is set up to produce a water condensate from exhaust air of the fuel-cell system;

the condenser is set up in heat-conductive contact with the

cooler element; and

the cooler element is set up to cool the condenser.

12. The sanitary device of claim 11 ,

wherein the water condensate may be supplied to a freshwater container.

13. The sanitary device of claim 1 ,

wherein the power supply system has a storage device for storing electrical energy.

14. The sanitary device of claim 1 ,

wherein the power supply system is set up to feed electrical energy into a vehicle electrical system.

15. The sanitary device of claim 1 ,

wherein the supply system also has a control unit; and

the control unit controls power distribution for the electrical consumer elements.

16. A method for autonomous operation of a sanitary device for a conveyance comprising:

replaceably setting up of a sanitary module in a cabin area of the conveyance; and

autonomously operating of the sanitary module using a supply system set up in the sanitary module;

supplying electrical consumer elements of the sanitary module with power, wherein the power is supplied with a power supply unit of a power supply system of the sanitary device;

feeding cabin air to a cathode side of a fuel-cell system of the power supply unit and hydrogen to an anode side of the fuel-cell system from a hydrogen tank of the power supply unit, wherein the hydrogen tank has a metal hydride accumulator chargeable with hydrogen;

discharging hydrogen from the metal hydride accumulator and cooling down the metal hydride accumulator in an operating state of the fuel-cell system;

cooling a cooler element of the supply system with the metal hydride accumulator.

17. The method of claim 16 ,

wherein the conveyance is selected from the group comprising aircraft, buses, rail vehicles, or water vehicles.

18. An aircraft having a sanitary device of claim 1 .

19. A method for autonomous operation of a sanitary device for a conveyance, comprising using a sanitary device according to claim 1 .

20. A sanitary device for a conveyance, comprising:

a sanitary module;

a supply system having a power supply unit;

wherein the sanitary module is adapted for being set up replaceably in a cabin area of the conveyance; and the supply system is set up in the sanitary module, so that the sanitary module is operable autonomously;

wherein the power supply unit has a fuel-cell system having an anode side and a cathode side and a hydrogen tank with a metal hydride accumulator chargeable with hydrogen;

wherein cabin air may be fed to the cathode side and hydrogen may be fed to the anode side from the hydrogen tank;

wherein the supply system has a cooler element;

wherein the cooler element is set up in heat-conductive contact with the metal hydride accumulator;

wherein the metal hydride accumulator discharges hydrogen and cools down in an operating state of the fuel-cell system; and

wherein the metal hydride accumulator is set up to cool the cooler element.