Anti-microbial device

• US 8,641,967 B2
• Filed: 02/22/2012
• Issued: 02/04/2014
• Est. Priority Date: 02/23/2011
• Status: Active Grant

• Current Assignee: Applied Silver, Inc.
• Original Assignee: Applied Silver, Inc.
• Inventors: Bik, Russell J., Morham, Sean
• Primary Examiner(s): Conley, Sean E
• Assistant Examiner(s): SPAMER, DONALD R
• Application Number:
  US13/402,771
• Publication Number:
  US 20120213665A1
• Time in Patent Office: 713 Days
• Field of Search: 422/28, 210/764, 68/5.C
• US Class Current: 422/28
• CPC Class Codes: A61L 2/232 layered or coated
• CPC Class Codes: A61L 2/235 cellular, porous or foamed
• CPC Class Codes: A61L 2/238 Metals or alloys, e.g. oligodynamic metals
• CPC Class Codes: A61L 2202/17 Combination with washing or cleaning means
• CPC Class Codes: C02F 1/008 Control or steering systems not provided for elsewhere in subclass C02F
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 1/74 with air aeration of stretches of water C02F7/00
• CPC Class Codes: C02F 2209/02 Temperature
• CPC Class Codes: C02F 2209/03 Pressure
• CPC Class Codes: C02F 2303/04 Disinfection
• CPC Class Codes: D06F 2101/20 Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
• CPC Class Codes: D06F 2105/58 Indications or alarms to the control system or to the user
• CPC Class Codes: D06F 34/05 for wireless communication between components, e.g. for remote monitoring or control
• CPC Class Codes: D06F 34/14 Arrangements for detecting or measuring specific parameters
• CPC Class Codes: D06F 34/28 Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
• CPC Class Codes: D06F 35/008 for disinfecting the tub or the drum

Abstract

Under electronic monitoring and control, fluids flow into a fluid diffusion device 9 to form a fluid combination. The fluid combination has corrosive properties as it flows into an anti-microbial canister 8 housing a roll 4 of anti-microbial metallic coated substrate 1, support frame 2, and porous body 3. The fluid combination corrodes the anti-microbial metallic coated substrate 1 located inside the anti-microbial canister 8. Upon exiting the anti-microbial canister 8, the fluid combination contains dissolved metal and is a liquid anti-microbial agent. Monitors throughout the system ensure the anti-microbial agent is being produced at the desired level and rate as it exits into its application.

Claims

1. An antimicrobial device comprising:

a metallic coated substrate;

a porous body positioned with respect to the substrate for intimate contact of turbulated fluid in the porous body with the substrate;

a support frame intermediate the substrate and porous body to support the metallic coated substrate adjacent the porous body;

a housing containing the substrate, support frame and porous body and having an inlet and outlet for the fluid, said substrate, support frame and porous body positioned for flow of the fluid through the porous body from inlet to outlet;

a fluid diffusion device containing hollow porous diffusion material connected upstream of the housing inlet and having fluid inlets for a first fluid and a second fluid creating a corrosive fluid for turbulation in the porous body; and

,

an electronic control and monitoring system including an electronic module programmed to adjust the corrosive properties of the combination of the first fluid and second fluid by controlling flow of the first and second fluids received by the fluid diffusion device for varying concentration of metallic ions dissolved into solution from the substrate between 1 ppb and 700 ppb.

2. The antimicrobial device defined in claim 1 wherein the housing is a cylindrical canister and the metallic coated substrate, support frame and porous body are helically rolled within the canister.

3. The antimicrobial device defined in claim 2 wherein the metallic coating of the substrate is silver.

4. The antimicrobial device defined in claim 3 wherein the first fluid is water and the second fluid is air and the electronic control and monitoring system includes:

a fluid pressure regulator connected to the fluid diffusion device water inlet,

an air pressure regulator connected to the fluid diffusion device air inlet; and

a flow reducer connected to the outlet of the housing.

5. The antimicrobial device defined in claim 4 wherein the electronic control and monitoring system further comprises:

a solenoid fluid shut off valve connected upstream of the fluid pressure regulator;

a temperature sensor for incoming water;

a fluid pressure sensor for incoming water;

an air pressure sensor for incoming air;

a solenoid air shut off valve connected upstream of the air pressure regulator; and

a flow sensor connected downstream of the flow reducer.

6. The antimicrobial device defined in claim 5 wherein the electronic module is connected to the temperature sensor, fluid pressure sensor, air pressure sensor and flow sensor for data input, said electronic module adapted for operation of at least the solenoid fluid shut off valve and solenoid air shut off valve as programmed to adjust corrosive properties responsive to the data input.

7. The antimicrobial device as defined in claim 6 wherein the electronic module as programmed to adjust the corrosive properties has program states including an initialization state, an idle state, a process state and a shut down state, said electronic module implementing the program states responsive to the data input and said program states determining operation of at least the solenoid fluid shut off valve and solenoid air shut off valve.

8. The antimicrobial device defined in claim 1 further comprising:

a first fluid evaluation device at the housing inlet; and

a second fluid evaluation device at the housing outlet.

9. A method for antimicrobial treatment of a fluid comprising:

positioning a metallic coated substrate in a support frame for intimate contact with a porous body positioned with respect to the substrate for intimate contact of turbulated fluid in the porous body with the substrate, said support frame intermediate the substrate and porous body to support the metallic coated substrate adjacent the porous body;

directing fluid via a housing containing the substrate, support frame and porous body with an inlet and outlet for the fluid, said substrate, support frame and porous body positioned for flow of the fluid through the porous body from inlet to outlet;

aerating the fluid with a fluid diffusion device containing hollow porous diffusion material connected upstream of the housing inlet and having fluid inlets for a first fluid and a second fluid creating a corrosive fluid to provide a turbulated fluid at an inlet to the housing for turbulation in the porous body to produce a selected concentration of metallic ions in the fluid at an outlet of the housing;

programming an electronic control and monitoring system including an electronic module to adjust the corrosive properties of the combination of the first fluid and second fluid by controlling flow of the first and second fluids received by the fluid diffusion device for varying concentration of metallic ions dissolved into solution from the substrate between 1 ppb and 700 ppb and,

providing the fluid from the outlet of the housing for antimicrobial action.

10. The method of claim 9 wherein the metallic ions are silver and the selected concentration of metallic ions is between 50 and 700 parts per billion (ppb).

11. The method of claim 10 wherein the concentration of silver ions is between 50 ppb and 500 ppb.

12. The method for antimicrobial treatment of fluid as defined in claim 9 further comprising:

providing power to a controlling electronics module and performing an initialization sequence;

if the initialization is successful entering an idle state;

selecting a manual mode or automatic mode;

in automatic mode, upon receiving an external signal advancing from idle state to a process mode or in manual mode, advancing from idle state to process mode upon receiving a start button command, said process mode performing the steps of directing the fluid, aerating the fluid and providing the fluid;

if a power failure occurs, entering a shutdown sequence;

upon receiving a process complete command in automatic mode or a stop button command in manual mode, returning from process mode back to idle state; and

,

if the shutdown sequence is complete, upon restoring power, return to the initialization sequence.

13. The method for antimicrobial treatment of fluid as defined in claim 10 wherein

the step of directing fluid comprises providing water at a predetermined flow rate, temperature and pressure, and

the step of aerating comprises providing regulated air at a predetermined pressure for turbulation of the water flowing through the housing to provide an anti-microbial solution with ionic silver concentrations of between 50 ppb and 240 ppb and,

the step of providing the fluid comprises providing the water to a commercial washing system to provide ionic silver concentration in linens washed in the commercial washing system at between 0.17 μ

g/kg and 1.7 μ

g/kg.

14. An antimicrobial device comprising:

a water pressure regulator connected to a hot water source;

an air pressure regulator connected to an air inlet;

a diffusion device containing hollow porous diffusion material having an inlet connected to receive water from the water pressure regulator, an inlet connected to receive air from the air pressure regulator and an outlet;

a metallic coated substrate;

a porous body positioned with respect to the substrate for intimate contact of turbulated water in the porous body with the substrate;

a support frame intermediate the substrate and porous body to support the metallic coated substrate adjacent the porous body;

a housing containing the substrate, support frame and porous body and having an inlet connected to the diffusion device outlet and an outlet for the water, said substrate, support frame and porous body positioned for flow of the water through the porous body directly from housing inlet to housing outlet;

a flow reducer connected to the outlet of the housing; and

,

an electronics module programmed to control the water pressure regulator, air pressure regulator and flow reducer to adjust corrosive properties of the combination of the water and air thereby varying concentration of metallic ions dissolved into solution in the water from the substrate between 1 ppb and 700 ppb.