US20060157343A1 - Electrolytic cell for surface and point of use disinfection - Google Patents
Electrolytic cell for surface and point of use disinfection Download PDFInfo
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- US20060157343A1 US20060157343A1 US11/353,315 US35331506A US2006157343A1 US 20060157343 A1 US20060157343 A1 US 20060157343A1 US 35331506 A US35331506 A US 35331506A US 2006157343 A1 US2006157343 A1 US 2006157343A1
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- container
- electrolytic cell
- oxidant
- solution
- sanitizing solution
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/03—Electric current
- A61L2/035—Electrolysis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
- A61L2/183—Ozone dissolved in a liquid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4616—Power supply
- C02F2201/46165—Special power supply, e.g. solar energy or batteries
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/02—Location of water treatment or water treatment device as part of a bottle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Definitions
- This invention relates to the production of oxidants in an electrolytic cell that are introduced into an aqueous solution used as a disinfectant or sanitizing liquid.
- This invention involves electrolytic technology known generally in the art. Electrolytic technology utilizing dimensionally stable anodes (DSA) has been used for years for the production of chlorine and other mixed-oxidant solutions. Dimensionally stable anodes are described in U.S. Pat. No. 3,234,110 to Beer, entitled “Electrode and Method of Making Same”. An example of an electrolytic cell with membranes is described in U.S. Pat. No. RE 32,077 to deNora, et al., entitled “Electrode Cell with Membrane and Method for Making Same”. An electrolytic cell with dimensionally stable anodes without membranes is described in U.S. Pat. No. 4,761,208 to Gram, et al., entitled “Electrolytic Method and Cell for Sterilizing Water.”
- the invention also involves the use of electrolytic cells to produce an oxidant.
- Commercial electrolytic cells have been used routinely for oxidant production that utilizes a flow-through configuration that may or may not be under pressure that is adequate to create flow through the electrolytic device. Examples of cells of this configuration are described in U.S. Pat. No. 6,309,523 to Prasnikar, et al., entitled “Electrode and Electrolytic Cell Containing Same,” and U.S. Pat. No. 5,385,711 to Baker, et al., entitled “Electrolytic Cell for Generating Sterilization Solutions Having Increased Ozone Content,” and many other membrane-type cells.
- the oxidant is produced in an open-type cell or drawn into the cell with a syringe or pump-type device, such as described in U.S. Pat. No. 6,524,475 to Herrington, et al., entitled “Portable Water Disinfection System.”
- the word “sanitize” means: to make sanitary, as by cleaning or sterilizing.
- the word “disinfect” means: to free from disinfection, esp. by destroying harmful microorganisms; broadly; cleanse.
- the word “disinfectant” means: a chemical that destroys vegetative forms of harmful microorganisms esp. on inanimate objects but that may be less effective in destroying bacterial spores. Webster's Ninth New Collegiate Dictionary (1984) For purposes of this application, the words sanitize, disinfect, disinfectant and variants thereof are used in the broad sense as meaning, cleanse.
- a specific type of electrolytic cell that produces an oxidant is disclosed in U.S. patent application Ser. No. 09/907,092 to Herrington, et al., one of the inventors of the invention described and claimed in this application, entitled “Portable Water Disinfection System,” the specification of which is incorporated herein by reference.
- the specification describes disinfection devices that utilize, in one instance, an electrolytic cell chamber in which hydrogen gas is generated during electrolysis to provide a driving force to expel oxidant from the cell chamber through a pressure-sensitive check valve. In this configuration, unconverted electrolyte is also expelled from the body of the cell as hydrogen gas is generated.
- U.S. Pat. No. 3,996,126 to Rasmussen describes an electrolyzed saline solution generated in a closed container and used to treat teeth and oral cavities.
- a propellant gas, electrical pump, or manual pump is utilized to force the electrolyzed saline solution out of the container through a tube.
- U.S. Pat. No. 4,019,986 to Burris, et al describes a portable ozone generator and container for purifying water.
- U.S. application US 2002/0175085 A1 to Harkins, et al relates to a stationary electrolyzed oxidizing water system for spraying a sanitizing solution on eggs.
- U.S. Pat. No. 6,502,766 B1 to Streutker, et al relates to a motorized sprayer for attachment to a bottle.
- U.S. Pat. No. 6,363,951 B1 to Wood describes an ozone generation system for use in a water containing device such as a sink for disinfection of materials placed in the sink.
- the present invention comprises an apparatus and method for producing an oxidant to treat a liquid that may be dispensed from a spray bottle or other container as a disinfectant.
- the apparatus of the invention is low-cost, small and simple, suitable for consumer residential use, although industrial, medical and military applications are also within the scope of the invention.
- the apparatus may comprise a hand-held portable spray bottle or other container that is initially filled with a liquid, preferably water.
- the apparatus further comprises at least one electrolytic cell.
- the cell includes at least two electrodes, one electrode comprises at least one cathode and another electrode comprises at least one anode. Many types and configurations of electrodes may be suitable for the electrolytic cell of the present invention.
- the apparatus comprises a control circuit for selectively delivering an electrical charge between the cathode and the anode from any energy source.
- the energy source electrically connected with the control circuit, delivers a controlled electrical charge having a value determined by the cell characteristics, such as the electrolyte type and quantity, size, and other factors.
- the energy or power source may be a standard or rechargeable battery, direct AC connection or solar power.
- an electrolyte preferably comprising a sodium chloride brine solution or a sodium chlorite solution, is located within the cell housing between the anode and cathode.
- Other oxidants may be produced, based upon the desired application including other halogen oxides, such as chlorine dioxide.
- the controlled electrical charge passes through the electrolytic solution from cathode to anode, thereby generating at least one oxidant in the electrolyte.
- a valve or other means may be used to control fluid connection between the cell and the liquid within the container.
- a fluid such as water is placed in the bottle, and oxidants produced within the electrolytic cell are transferred to the water to produce a solution with a free available chlorine concentration of sufficient strength to effectively sanitize the material or surface of an object.
- the bottle can be an open bottle, closed bottle, or bottle with a spray nozzle or other pumping means to transfer the solution within the bottle to the material or surface to be treated.
- the spray bottle is placed on a base unit.
- the base unit comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit. Oxidants produced in the base unit are transferred to the interior of the spray bottle through a valve mechanism. The spray bottle is then removed from the base and used to disinfect surfaces, foods, or other materials requiring sanitization.
- the spray bottle includes a handle that houses an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
- the spray bottle includes a separate, compact, electrolytic oxidant-producing device or module that removably, mechanically attaches to the spray bottle.
- the electrolytic device is used for production of a number of discrete charges of concentrated oxidant and is then replaced when the oxidant production capacity is depleted.
- the replaceable oxidant producing device comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
- FIG. 1 is a view of a bottle mounted on an oxidant-producing base unit.
- FIG. 2 is a bottle with an oxidant producing unit housed within the handle of the bottle.
- FIG. 3 is a bottle with a separate replaceable oxidant-producing device or module removably attached to the bottle.
- FIGS. 1, 2 , and 3 A simple version of an oxidant producing device useful in the present invention is described and shown in FIGS. 1, 2 , and 3 of U.S. patent application Ser. No. 09/907,092 for “Portable Water Disinfection System”, incorporated herein by reference.
- Another oxidant producing device useful in the present invention is described and shown in U.S. patent application, Attorney Docket No. 30750-1001, entitled “Gas Drive Electrolytic Cell”, filed concurrently herewith.
- Other variations and configurations of an electrolytic cell can be produced to accommodate various applications.
- the object of the current invention is to incorporate an electrolytic cell into a spray bottle or other container for cleaning solution to enhance the disinfection performance of the cleaning solution.
- the cleaning solution may have many application including household or industrial surface cleaning (countertops, lavatories, etc), an enhanced cleaning and disinfection solution for washing hands in a sterile environment, for cleaning of medical instruments, and any other application where inactivation of viruses, bacteria, protozoans, molds, spores, volatile organic compounds, pesticides, herbicides, chemical contamination agents, cyanide, and other undesirable matter can be destroyed by the oxidant solution.
- one embodiment of the present invention comprises base unit 20 with bottle 22 placed on a horizontal surface for receiving the bottle.
- bottle 22 comprises a spray bottle.
- the bottle may be a closed or capped bottle, or an open bottle.
- base unit 22 comprises electrolytic cell 46 , circuit board 34 , and electrolyte storage container 32 .
- power supply 36 is attached by an electrical cord to base unit 22 and plugs directly into a wall electrical outlet.
- power supply 36 is located within base unit 22 and plugged directly into an electrical outlet.
- fluid 24 in order to commence operation, fluid 24 , preferably water, is introduced into bottle 22 .
- Activation switch 38 is pressed by the user thereby activating production of oxidants.
- Electrolyte within storage container 32 is transferred to electrolytic cell 46 .
- Electrical power is applied to electrolytic cell 46 through control circuit 34 .
- Status of oxidant production and fault conditions such as low electrolyte levels or other conditions are indicated by illumination of status lights 40 .
- oxidants are transferred to the interior of bottle 22 via a valve and probe 42 .
- Probe 42 provides fluid communication with the liquid in bottle 22 via self sealing valve 44 which is integral to bottle 22 .
- Other user controlled apparatus may be employed to transfer the electrolyte to the solution within bottle 22 .
- fluid 24 ′ comprises a free available chlorine concentration of sufficient value to sanitize desired objects.
- bottle 22 is removed from base unit 20 and is transported by the user to other locations for the purpose of disinfecting or sanitizing surfaces, food products, or other materials.
- Bottle 22 comprises handle 26 which further comprises spray trigger 28 and spray nozzle 30 .
- handle 22 comprises oxidant efficacy indicator light 48 .
- Oxidant efficacy indicator light 48 provides status to the user of the free available chlorine oxidant strength in fluid 24 .
- Oxidant efficacy indicator light 48 is activated via electrical contact 50 .
- Oxidant efficacy indicator light 48 is powered from a capacitor circuit located within handle 26 .
- oxidant efficacy indicator light 48 is powered by a battery located within handle 26 .
- activation of oxidant efficacy indicator light 48 is triggered by a radio frequency signal generated by an RF circuit located within base unit 20 .
- FIG. 2 An alternative embodiment of the present invention is shown in FIG. 2 .
- the apparatus comprises bottle 22 and sprayer head 54 .
- Sprayer head 54 comprises an electrolytic cell, a power supply, a control circuit, sprayer nozzle 30 , spray handle 28 , and electrolyte container 32 .
- Sprayer head 54 includes oxidant efficacy indicator light 48 .
- Sprayer head 54 plugs directly into an electrical wall outlet via electrical connector 52 to provide power to recharge a battery located within sprayer head 54 .
- the battery within sprayer head 54 provides the power to deliver a charge to the electrolyte within the electrolytic cell to produce oxidants.
- electrolysis within the cell within sprayer head 54 is powered directly from the electrical wall outlet via electrical connectors 52 .
- electrolytic cell module 60 comprises an electrolytic cell, electrolyte source, power source, and control circuit. Electrolytic cell module 60 is removable from bottle 22 , preferably by threads or other mechanical fluid-tight sealing mechanism to bottle 22 . Electrolytic cell module 60 is removable for replacement as a complete assembly from bottle 22 . In an alternative embodiment, the electrolyte cell and power source are replaceable components that attach to electrolytic cell module 60 . In this embodiment, electrolytic cell module 60 comprises the electrolytic cell and control circuit. The oxidant produced by module 60 is in fluid connection with the liquid in bottle 22 .
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- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
- This application is a continuation application of U.S. patent application Ser. No. 10/785,610, entitled “Electrolytic Cell for Surface and Point of Use Disinfection”, filed Feb. 23, 2004, which application claims priority to and the benefit of filing of U.S. Provisional Patent Application Ser. No. 60/448,994, entitled “Electrolytic Cell for Surface and Point of Use Disinfection”, filed Feb. 21, 2003, and which is also a continuation-in-part application of U.S. patent application Ser. No. 09/907,092, filed on Jul. 16, 2001 entitled “Portable Water Disinfection System”, now issued as U.S. Pat. No. 6,736,966. This application is also related to U.S. patent application Ser. No. 10/785,892, entitled “Gas Drive Electrolytic Cell”, filed February 23, 2004. The specifications and claims of each application listed are incorporated herein by reference.
- This invention relates to the production of oxidants in an electrolytic cell that are introduced into an aqueous solution used as a disinfectant or sanitizing liquid.
- This invention involves electrolytic technology known generally in the art. Electrolytic technology utilizing dimensionally stable anodes (DSA) has been used for years for the production of chlorine and other mixed-oxidant solutions. Dimensionally stable anodes are described in U.S. Pat. No. 3,234,110 to Beer, entitled “Electrode and Method of Making Same”. An example of an electrolytic cell with membranes is described in U.S. Pat. No. RE 32,077 to deNora, et al., entitled “Electrode Cell with Membrane and Method for Making Same”. An electrolytic cell with dimensionally stable anodes without membranes is described in U.S. Pat. No. 4,761,208 to Gram, et al., entitled “Electrolytic Method and Cell for Sterilizing Water.”
- The invention also involves the use of electrolytic cells to produce an oxidant. Commercial electrolytic cells have been used routinely for oxidant production that utilizes a flow-through configuration that may or may not be under pressure that is adequate to create flow through the electrolytic device. Examples of cells of this configuration are described in U.S. Pat. No. 6,309,523 to Prasnikar, et al., entitled “Electrode and Electrolytic Cell Containing Same,” and U.S. Pat. No. 5,385,711 to Baker, et al., entitled “Electrolytic Cell for Generating Sterilization Solutions Having Increased Ozone Content,” and many other membrane-type cells. In other configurations, the oxidant is produced in an open-type cell or drawn into the cell with a syringe or pump-type device, such as described in U.S. Pat. No. 6,524,475 to Herrington, et al., entitled “Portable Water Disinfection System.”
- The word “sanitize” means: to make sanitary, as by cleaning or sterilizing. The word “disinfect” means: to free from disinfection, esp. by destroying harmful microorganisms; broadly; cleanse. The word “disinfectant” means: a chemical that destroys vegetative forms of harmful microorganisms esp. on inanimate objects but that may be less effective in destroying bacterial spores. Webster's Ninth New Collegiate Dictionary (1984) For purposes of this application, the words sanitize, disinfect, disinfectant and variants thereof are used in the broad sense as meaning, cleanse.
- A specific type of electrolytic cell that produces an oxidant is disclosed in U.S. patent application Ser. No. 09/907,092 to Herrington, et al., one of the inventors of the invention described and claimed in this application, entitled “Portable Water Disinfection System,” the specification of which is incorporated herein by reference. The specification describes disinfection devices that utilize, in one instance, an electrolytic cell chamber in which hydrogen gas is generated during electrolysis to provide a driving force to expel oxidant from the cell chamber through a pressure-sensitive check valve. In this configuration, unconverted electrolyte is also expelled from the body of the cell as hydrogen gas is generated. In an alternate configuration described in the same application, hydrogen gas pressure is contained in a cell chamber during electrolysis, but the pressure within the cell chamber is limited by the action of a spring loaded piston that continues to increase the volume of the cell chamber as gas volume increases. Ultimately, a valve mechanism opens, and the spring-loaded piston fills the complete volume of the cell chamber forcing the oxidant out of the cell chamber. Another electrolytic cell configuration is disclosed in U.S. patent application, Attorney Docket No. 30750-1001, entitled “Gas Drive Electrolytic Cell” filed concurrently herewith. The specification describes a sealed cell during the electrolysis that produces the oxidant which results in a build up of gas pressure, primarily H2 released at the cathode, which overcomes a check valve that opens to expel both the gas and the oxidant.
- U.S. Pat. No. 3,996,126 to Rasmussen describes an electrolyzed saline solution generated in a closed container and used to treat teeth and oral cavities. A propellant gas, electrical pump, or manual pump is utilized to force the electrolyzed saline solution out of the container through a tube.
- U.S. Pat. No. 4,019,986 to Burris, et al, describes a portable ozone generator and container for purifying water. U.S. application US 2002/0175085 A1 to Harkins, et al, relates to a stationary electrolyzed oxidizing water system for spraying a sanitizing solution on eggs. U.S. Pat. No. 6,502,766 B1 to Streutker, et al, relates to a motorized sprayer for attachment to a bottle. U.S. Pat. No. 6,363,951 B1 to Wood describes an ozone generation system for use in a water containing device such as a sink for disinfection of materials placed in the sink.
- These prior art systems are generally large industrial or commercial apparatus producing large quantities of solution and are therefore not suitable for residential use by consumers. The devices lack portability due to their size as required for a disinfectant or sanitizing solution that may be applied at various locations without the need for pipes or hoses. The prior art does not disclose an apparatus that is low cost, convenient and simple to operate, store, and activate for the production of an oxidant that may be introduced to an aqueous solution which may then be used as a disinfectant for a wide variety of objects.
- The present invention comprises an apparatus and method for producing an oxidant to treat a liquid that may be dispensed from a spray bottle or other container as a disinfectant. The apparatus of the invention is low-cost, small and simple, suitable for consumer residential use, although industrial, medical and military applications are also within the scope of the invention. The apparatus may comprise a hand-held portable spray bottle or other container that is initially filled with a liquid, preferably water. The apparatus further comprises at least one electrolytic cell. The cell includes at least two electrodes, one electrode comprises at least one cathode and another electrode comprises at least one anode. Many types and configurations of electrodes may be suitable for the electrolytic cell of the present invention. The apparatus comprises a control circuit for selectively delivering an electrical charge between the cathode and the anode from any energy source.
- The energy source, electrically connected with the control circuit, delivers a controlled electrical charge having a value determined by the cell characteristics, such as the electrolyte type and quantity, size, and other factors. The energy or power source may be a standard or rechargeable battery, direct AC connection or solar power. During generation of oxidants, an electrolyte, preferably comprising a sodium chloride brine solution or a sodium chlorite solution, is located within the cell housing between the anode and cathode. Other oxidants may be produced, based upon the desired application including other halogen oxides, such as chlorine dioxide. The controlled electrical charge passes through the electrolytic solution from cathode to anode, thereby generating at least one oxidant in the electrolyte. A valve or other means may be used to control fluid connection between the cell and the liquid within the container.
- In one embodiment, a fluid such as water is placed in the bottle, and oxidants produced within the electrolytic cell are transferred to the water to produce a solution with a free available chlorine concentration of sufficient strength to effectively sanitize the material or surface of an object. In alternative embodiments, the bottle can be an open bottle, closed bottle, or bottle with a spray nozzle or other pumping means to transfer the solution within the bottle to the material or surface to be treated.
- In one embodiment of the present invention, the spray bottle is placed on a base unit. The base unit comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit. Oxidants produced in the base unit are transferred to the interior of the spray bottle through a valve mechanism. The spray bottle is then removed from the base and used to disinfect surfaces, foods, or other materials requiring sanitization.
- In an alternative embodiment of the present invention, the spray bottle includes a handle that houses an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
- In yet another embodiment of the present invention, the spray bottle includes a separate, compact, electrolytic oxidant-producing device or module that removably, mechanically attaches to the spray bottle. In this embodiment, the electrolytic device is used for production of a number of discrete charges of concentrated oxidant and is then replaced when the oxidant production capacity is depleted. The replaceable oxidant producing device comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
- Other objects, advantages and novel features, and further scope of applicability of the present invention will be set forth in part in the detailed description to follow, taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
- The accompanying drawings, which are incorporated into and form a part of the specification, illustrate several embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The drawings are only for the purpose of illustrating several embodiments of the invention and are not to be construed as limiting the invention. In the drawings:
-
FIG. 1 is a view of a bottle mounted on an oxidant-producing base unit. -
FIG. 2 is a bottle with an oxidant producing unit housed within the handle of the bottle. -
FIG. 3 is a bottle with a separate replaceable oxidant-producing device or module removably attached to the bottle. - Commercial electrolytic cells are in production to produce a mixed-oxidant solution. This process is described in U.S. Pat. No. 4,761,208 and subsequent patents and applications, referred to above, all incorporated herein by reference. The disinfectant produced in this process is very effective for inactivation of microorganisms, particularly microorganisms that are resistant to treatment by conventional chlorine, whether in gas, liquid (sodium hypochlorite), or solid (calcium hypochlorite) form.
- A simple version of an oxidant producing device useful in the present invention is described and shown in
FIGS. 1, 2 , and 3 of U.S. patent application Ser. No. 09/907,092 for “Portable Water Disinfection System”, incorporated herein by reference. Another oxidant producing device useful in the present invention is described and shown in U.S. patent application, Attorney Docket No. 30750-1001, entitled “Gas Drive Electrolytic Cell”, filed concurrently herewith. Other variations and configurations of an electrolytic cell can be produced to accommodate various applications. - The object of the current invention is to incorporate an electrolytic cell into a spray bottle or other container for cleaning solution to enhance the disinfection performance of the cleaning solution. The cleaning solution may have many application including household or industrial surface cleaning (countertops, lavatories, etc), an enhanced cleaning and disinfection solution for washing hands in a sterile environment, for cleaning of medical instruments, and any other application where inactivation of viruses, bacteria, protozoans, molds, spores, volatile organic compounds, pesticides, herbicides, chemical contamination agents, cyanide, and other undesirable matter can be destroyed by the oxidant solution.
- Referring to
FIG. 1 , one embodiment of the present invention comprisesbase unit 20 withbottle 22 placed on a horizontal surface for receiving the bottle. In this embodiment,bottle 22 comprises a spray bottle. In alternative embodiments of the present invention, the bottle may be a closed or capped bottle, or an open bottle. In the first embodiment,base unit 22 compriseselectrolytic cell 46,circuit board 34, andelectrolyte storage container 32. In this embodiment,power supply 36 is attached by an electrical cord tobase unit 22 and plugs directly into a wall electrical outlet. In an alternative embodiment of the present invention,power supply 36 is located withinbase unit 22 and plugged directly into an electrical outlet. - In the first embodiment of the present invention, in order to commence operation,
fluid 24, preferably water, is introduced intobottle 22.Activation switch 38 is pressed by the user thereby activating production of oxidants. Electrolyte withinstorage container 32 is transferred toelectrolytic cell 46. Electrical power is applied toelectrolytic cell 46 throughcontrol circuit 34. Status of oxidant production and fault conditions such as low electrolyte levels or other conditions are indicated by illumination of status lights 40. Upon completion of oxidant generation withinelectrolytic cell 46, oxidants are transferred to the interior ofbottle 22 via a valve andprobe 42.Probe 42 provides fluid communication with the liquid inbottle 22 viaself sealing valve 44 which is integral to bottle 22. Other user controlled apparatus may be employed to transfer the electrolyte to the solution withinbottle 22. After oxidants are transferred to the interior ofbottle 22, fluid 24′ comprises a free available chlorine concentration of sufficient value to sanitize desired objects. - In the first embodiment of the present invention,
bottle 22 is removed frombase unit 20 and is transported by the user to other locations for the purpose of disinfecting or sanitizing surfaces, food products, or other materials.Bottle 22 comprises handle 26 which further comprisesspray trigger 28 andspray nozzle 30. In the first embodiment, handle 22 comprises oxidantefficacy indicator light 48. Oxidantefficacy indicator light 48 provides status to the user of the free available chlorine oxidant strength influid 24. Oxidantefficacy indicator light 48 is activated viaelectrical contact 50. Oxidantefficacy indicator light 48 is powered from a capacitor circuit located withinhandle 26. In an alternative embodiment, oxidantefficacy indicator light 48 is powered by a battery located withinhandle 26. In this alternative embodiment, activation of oxidantefficacy indicator light 48 is triggered by a radio frequency signal generated by an RF circuit located withinbase unit 20. - An alternative embodiment of the present invention is shown in
FIG. 2 . In this alternative embodiment, the apparatus comprisesbottle 22 andsprayer head 54.Sprayer head 54 comprises an electrolytic cell, a power supply, a control circuit,sprayer nozzle 30, spray handle 28, andelectrolyte container 32.Sprayer head 54 includes oxidantefficacy indicator light 48.Sprayer head 54 plugs directly into an electrical wall outlet viaelectrical connector 52 to provide power to recharge a battery located withinsprayer head 54. The battery withinsprayer head 54 provides the power to deliver a charge to the electrolyte within the electrolytic cell to produce oxidants. In an alternative embodiment, electrolysis within the cell withinsprayer head 54 is powered directly from the electrical wall outlet viaelectrical connectors 52. - Yet another embodiment of the present invention is shown in
FIG. 3 . In this embodiment,electrolytic cell module 60 comprises an electrolytic cell, electrolyte source, power source, and control circuit.Electrolytic cell module 60 is removable frombottle 22, preferably by threads or other mechanical fluid-tight sealing mechanism to bottle 22.Electrolytic cell module 60 is removable for replacement as a complete assembly frombottle 22. In an alternative embodiment, the electrolyte cell and power source are replaceable components that attach toelectrolytic cell module 60. In this embodiment,electrolytic cell module 60 comprises the electrolytic cell and control circuit. The oxidant produced bymodule 60 is in fluid connection with the liquid inbottle 22. - Applications of the present invention are especially applicable to low-cost water treatment systems for home use by consumers. However, it will be obvious to those versed in the art that this invention can be utilized in a variety of applications including spray bottle applications for surface cleaning, potable water treatment systems, wastewater treatment systems, food cleaning applications, medical instrument sterilization, surgical wards, hospital environments, military medical applications, military chemical and biological weapons decontamination, wound treatment, and other applications where a disinfectant is utilized.
- Although the invention has been described in detail with particular reference to these preferred embodiments, other embodiments can achieve the same results. Variations and modifications of the present invention will be obvious to those skilled in the art and it is intended to cover all such modifications and equivalents. The entire disclosures of all references, applications, patents, and publications cited above, and of the corresponding applications, are hereby incorporated by reference.
Claims (26)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/353,315 US20060157343A1 (en) | 2001-07-16 | 2006-02-13 | Electrolytic cell for surface and point of use disinfection |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/907,092 US6736966B2 (en) | 1999-05-25 | 2001-07-16 | Portable water disinfection system |
US44899403P | 2003-02-21 | 2003-02-21 | |
US10/785,610 US7008523B2 (en) | 2001-07-16 | 2004-02-23 | Electrolytic cell for surface and point of use disinfection |
US11/353,315 US20060157343A1 (en) | 2001-07-16 | 2006-02-13 | Electrolytic cell for surface and point of use disinfection |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US09/907,092 Continuation-In-Part US6736966B2 (en) | 1999-05-25 | 2001-07-16 | Portable water disinfection system |
US10/785,610 Continuation US7008523B2 (en) | 2001-07-16 | 2004-02-23 | Electrolytic cell for surface and point of use disinfection |
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US20060157343A1 true US20060157343A1 (en) | 2006-07-20 |
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US11/353,315 Abandoned US20060157343A1 (en) | 2001-07-16 | 2006-02-13 | Electrolytic cell for surface and point of use disinfection |
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US (1) | US20060157343A1 (en) |
EP (1) | EP1603441A4 (en) |
JP (1) | JP5022704B2 (en) |
AU (1) | AU2004224430C1 (en) |
CA (1) | CA2556014A1 (en) |
WO (1) | WO2004084698A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP1603441A4 (en) | 2006-11-22 |
JP2006518666A (en) | 2006-08-17 |
EP1603441A2 (en) | 2005-12-14 |
WO2004084698A3 (en) | 2004-12-23 |
AU2004224430B2 (en) | 2009-11-19 |
AU2004224430A1 (en) | 2004-10-07 |
CA2556014A1 (en) | 2004-10-07 |
WO2004084698A2 (en) | 2004-10-07 |
AU2004224430C1 (en) | 2010-04-29 |
JP5022704B2 (en) | 2012-09-12 |
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