Portable hand washing station

Patent metadata

Field	Value
Publication number	US-11641982-B2
Application number	US-202117337597-A
Country	US
Kind code	B2
Filing date	Jun 3, 2021
Priority date	Jun 5, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

The disclosed technology includes a portable hand washing station having a sink with an atomizing nozzle that can provide an ultra-low flow of atomized liquid. The atomizing nozzle can reduce consumption of water and reduce the required supply of power for adequate operation of a heating device and a pump of the portable hand washing station. The heating device can include insulation, such that the heating device can provide heated water during an extended operation period.

First claim

What is claimed is:

1. A portable hand washing station comprising:
a housing defining a cavity;
a sink attached to the housing, the sink including:
a faucet having an atomizing nozzle configured to provide an ultra-low flow of atomized liquid; and
a basin having a drain;

a clean water tank disposed within the cavity and being in fluid communication with the faucet;
a waste water tank disposed within the cavity and being in fluid communication with the drain;
a pump configured to transport liquid from the clean water tank to the faucet; and
a heating device configured to heat liquids, the heating device being in fluid communication with the clean water tank and the faucet; and
a water recovery system configured to recycle waste water collected in the waste water tank, the water recovery system comprising:
one or more low-micron filters, and
an ultraviolet light source.

2. The portable hand washing station of claim 1 , wherein the atomizing nozzle is configured to provide an ultra-low flow of liquid between approximately 0.01 gallons per minute and approximately 0.15 gallons per minute.

3. The portable hand washing station of claim 1 , wherein the portable hand washing station is configured to provide between approximately 140 and 400 hand washes, each hand wash having a duration of approximately 20 seconds.

4. The portable hand washing station of claim 1 , further comprising one or more wheels affixed to a bottom surface of the housing.

5. The portable hand washing station of claim 1 , wherein the heating device is a submersion heater disposed within the clean water tank.

6. The portable hand washing station of claim 1 , wherein the heating device is an electric tankless water heater.

7. The portable hand washing station of claim 1 , wherein the heating device is in fluid communication with the clean water tank and the clean water tank is configured to store between approximately 5 gallons and approximately 12 gallons of heated water.

8. The portable hand washing station of claim 7 , wherein the heating device is configured to maintain a predetermined water temperature for a predetermined operational period without a supply of power.

9. The portable hand washing station of claim 8 , wherein the predetermined operational period is between approximately 10 hours and approximately 12 hours.

10. The portable hand washing station of claim 7 , wherein the heating device includes insulation.

11. The portable hand washing station of claim 7 , wherein the heating device is a tank-based water heater configured to store between approximately 1 gallon and approximately 10 gallons of liquid.

12. The portable hand washing station of claim 1 , wherein the pump is an electric pump.

13. The portable hand washing station of claim 1 , wherein the pump is a manually operable pump.

14. The portable hand washing station of claim 1 further comprising a battery.

15. A portable hand washing station comprising:
a housing defining a cavity;
a sink attached to the housing, the sink including:
a faucet having an atomizing nozzle configured to provide an ultra-low flow of atomized liquid; and
a basin having a drain;

a clean water tank disposed within the cavity and being in fluid communication with the faucet;
a waste water tank disposed within the cavity and being in fluid communication with the drain;
a pump configured to transport liquid from the clean water tank to the faucet; and
a waste water pump configured to expel waste water from the waste water tank and a by-pass conduit fluidly connecting the clean water tank to the waste water tank.

16. A portable hand washing station comprising:
a housing defining a cavity;
a sink attached to the housing, the sink including:
a faucet with an atomizing nozzle configured to provide an ultra-low flow of atomized liquid;
a basin having a drain;

a waste water tank disposed within the cavity and being in fluid communication with the drain;
a pressure tank disposed within the cavity and being in fluid communication with the faucet, the pressure tank including:
a steel shell;
a water portion having a watertight liner;
an air portion; and
an air valve disposed on the shell and in fluid communication with the air portion; and

a heating device configured to heat liquids, the heating device being in fluid communication with the pressure tank and the faucet.

17. The portable hand washing station of claim 16 , wherein the pressure tank is configured to provide pressurized water during an operational period without a supply of power.

18. The portable hand washing station of claim 16 , wherein the pressure tank is a diaphragm pressure tank.

19. The portable hand washing station of claim 16 , wherein the pressure tank is a bladder pressure tank.

Assignees

• Rheem Mfg Co

Inventors

• Hayden Christopher M
• Satyanarayana Harsha
• Bolleyer Jens
• Manay Atilhan
• Zortman Andrew David
• Miller Travis

Classifications

• A47K5/1202

  dispensing dosed volume (A47K5/1201 takes precedence) · CPC title

• A47K10/32

  Dispensers for paper towels or toilet paper · CPC title

• A47K1/02 Primary

  Portable toilet tables; Wash cabinets or stands · CPC title

• A47K10/46

  with means for storing soiled towels · CPC title

• E03C1/044

  having a heating or cooling apparatus in the supply line (water heaters, e.g. with continuous flow, F24H) · CPC title