US20170173607A1 - Electrostatic fluid delivery backpack system - Google Patents

Electrostatic fluid delivery backpack system Download PDF

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Publication number
US20170173607A1
US20170173607A1 US15/387,319 US201615387319A US2017173607A1 US 20170173607 A1 US20170173607 A1 US 20170173607A1 US 201615387319 A US201615387319 A US 201615387319A US 2017173607 A1 US2017173607 A1 US 2017173607A1
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United States
Prior art keywords
fluid
nozzle
reservoir
housing
pump
Prior art date
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Abandoned
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US15/387,319
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English (en)
Inventor
Clifford Wright
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Octet Medical Inc
Original Assignee
Victory Innovations Co
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Application filed by Victory Innovations Co filed Critical Victory Innovations Co
Priority to US15/387,319 priority Critical patent/US20170173607A1/en
Assigned to VICTORY INNOVATIONS COMPANY reassignment VICTORY INNOVATIONS COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WRIGHT, CLIFFORD
Publication of US20170173607A1 publication Critical patent/US20170173607A1/en
Priority to US15/831,017 priority patent/US10322424B2/en
Assigned to KEYBANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT reassignment KEYBANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VICTORY INNOVATIONS COMPANY, INC.
Assigned to OCTET MEDICAL, INC. reassignment OCTET MEDICAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VICTORY INNOVATIONS COMPANY, INC.
Priority to US18/078,758 priority patent/US20230106729A1/en
Assigned to OCTET MEDICAL, INC., VICTORY INNOVATIONS COMPANY, INC. reassignment OCTET MEDICAL, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: KEYBANK NATIONAL ASSOCIATION
Assigned to OCTET MEDICAL, INC. reassignment OCTET MEDICAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VICTORY INNOVATIONS COMPANY, INC.
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B15/061—
    • B05B15/065—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/656—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the flow conduit length is changeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1691—Apparatus to be carried on or by a person or with a container fixed to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2475—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device comprising a container carried on the back of the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • 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
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • 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
    • A61L2202/10—Apparatus features
    • A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/007—At least a part of the apparatus, e.g. a container, being provided with means, e.g. wheels, for allowing its displacement relative to the ground

Definitions

  • Infectious disease is too often acquired in places that should be safe, such as ambulances, hospitals, schools, restaurants, hotels, athletic facilities, and other public areas. These places are traditionally cleaned by spraying a fluid disinfectant onto surfaces and wiping down the surface with a cloth. Unfortunately, such cleaning methods have been shown to be ineffective.
  • An improved mechanism for spraying down surfaces uses an electrostatic delivery system that sprays an electrically charged fluid, such as a disinfectant, onto surfaces.
  • a fluid such as chemical solution is atomized by a high-pressure air stream as it passes through an electrode inside a nozzle. Negatively charged particles are thereby induced onto droplet surfaces of the solution to form electric field charge within the spray plume of the solution.
  • the electrostatic charge causes the fluid to cling to a surface to increase the likelihood that the disinfectant will cover and clean the surface.
  • existing electrostatic delivery systems are unwieldy and inconvenient due to the power requirements of such systems. They are typically tethered to an electric cord or powered by air compressor or natural gas, which makes the system heavy.
  • an electrostatic fluid delivery system that is configured to deliver fluid, such as a disinfectant fluid, onto a surface by electrically charging the fluid and forming the fluid into a mist, fog, plume, or spray that can be directed onto a surface, such as a surface to be cleaned.
  • the system atomizes the fluid using a high-pressure air (or other gas) stream and passes the fluid through an electrode inside a nozzle assembly to charge, such as negatively charge, droplets of the atomized fluid.
  • the system uses a unique nozzle design that is configured to optimally atomize the fluid into various sized droplets.
  • the system is powered by a DC (direct current) power system rather than an AC (alternating current) system to eliminate cumbersome power cords.
  • the DC power system includes a lithium ion battery.
  • the device can electrically or positively charge a liquid or gas.
  • any of the systems described herein is powered by AC power source or any other type of power source including, for example, a solar power source.
  • the system can also use, for example, an alternator or a Tesla coil.
  • an electrostatic sprayer device comprising: a housing; an electrostatic module inside the housing; a reservoir having a cavity adapted to contain a fluid; at least one nozzle fluidly connected to the reservoir wherein the nozzles emit fluid in a direction along a flow pathway; a pump that propels fluid from the reservoir to the at least one nozzle; a direct current battery that powers at least one of the electrostatic module and the pump; an electrode assembly that electrostatically charges the fluid, wherein the electrode assembly is at least one of: (1) a first electrode assembly formed of a plurality electrodes electrically attached to the electrostatic module, wherein each electrode emits ions along an axis that is parallel to the flow pathway of the fluid emitted from the nozzle such that the plurality electrodes form a static electrical field through which the fluid passes; and (2) a second electrode assembly formed of a tube that fluidly through which fluid flows from the reservoir toward the at least one nozzle, wherein at least a conductive portion of the tube is electrically attached to the electrostatic module
  • FIG. 1 shows a perspective view of an electrostatic fogger device.
  • FIG. 2 shows an exploded view of the device of FIG. 1 .
  • FIG. 3 shows an enlarged view of a nozzle assembly of the device.
  • FIGS. 5 and 6 show a backpack style fogger.
  • FIG. 7 shows an embodiment of a handheld fogger.
  • FIG. 19 shows an enlarged view of a handle region of the system with a portion of the outer housing removed.
  • FIGS. 25A-26 show various views of a backpack style electrostatic fluid delivery system.
  • FIG. 28 shows a perspective view of a sprayer.
  • FIG. 29 shows a partially exploded view of the backpack system with the tank detached from the base.
  • FIG. 30 shows the tank pivoting away from the base.
  • FIG. 1 shows a perspective view of an electrostatic fluid delivery system 105 that is configured to electrically charge and atomize a fluid for spraying onto a surface.
  • the system 105 includes a housing 110 that is sized and shaped to be held by a user.
  • the housing 110 has an ergonomic shape that can be easily grasped and held but it should be appreciated that the size and shape of the housing can vary.
  • one or more vents or openings are positioned in the outer housing to provide communication between an inside of the outer housing and the outside such as for venting.
  • the system 105 may have one or more actuators or controls 120 that can be actuated by a user to activate and operate the system.
  • a fluid expelling region 175 is located at a front of the housing 110 and has an opening through which atomized fluid is expelled.
  • the system 105 also includes a reservoir 125 that defines a chamber in which fluid can be stored. The chamber of the reservoir 125 communicates internally with a nozzle assembly 205 ( FIG. 2 ) for supplying fluid to be electrically charged and atomized by the nozzle assembly, as described more fully below.
  • the nozzle 310 has a series of openings through which fluid is expelled.
  • the openings communicate with an internal lumen of a tube 410 through which fluid flows from the reservoir 125 ( FIG. 1 ).
  • the openings are arranged in a unique spatial pattern comprised of four openings with each opening positioned 90 degrees away from an adjacent opening so as to form a cross pattern.
  • the openings can vary in size. In an embodiment, the openings are 0.063 inches in diameter.
  • the nozzle can be connected to a drive assembly that varies the position of the nozzle to control the plume profile.
  • FIG. 7 shows another handheld embodiment 705 having a reservoir at a bottom of the device.
  • FIG. 8 shows an embodiment 805 that has a hand pump that can be pumped to generate a pressure differential that expels a plume of fluid out of the device.
  • FIG. 9 shows another embodiment of the system 105 .
  • the system 105 has an outer housing 110 that forms a handle that can ergonomically be grasped by a single hand of a user.
  • the system 105 includes at least one actuator that can be actuated to turn on and also turn off an internal pump, as well as a second actuator for turning on and off an electrostatics charger for expelling a plume of electrostatically charged fluid from a fluid expelling region 175 of the system 105 .
  • the system 105 has a removable reservoir 125 for storing fluid to be expelled.
  • the system 105 ejects high voltage ions to the air by means of a plurality of (such as three or more) sharp, detachable high voltage ion discharge electrodes or pins of a predetermined spacing (such as at 120° spacing) from each other on a rim of a nozzle holder (described below with reference to FIG. 14 ).
  • the high voltage ion discharge electrodes are each positioned along an axis that is in parallel to an axis of a spray nozzle so that the spray and ions are emitted in the same direction and along a parallel axis and therefore the droplets in the spray are surrounded and covered by ion stream and can be efficiently charged when they meet the ion stream.
  • the electrodes thus emit, propel, or otherwise send out ions or charge in a direction parallel to the direct of fluid flow or an average direction of fluid flow from the nozzles.
  • FIG. 10 shows the system 105 with a portion of the outer housing 110 removed to show internal components of the system 105 .
  • the system 105 includes a pump 1005 that is powered by a battery 1010 .
  • the pump 1005 is fluidly coupled to fluid within the reservoir 125 such that the pump can cause a pressure differential to draw fluid from the reservoir and into a nozzle assembly 1015 , which is described in detail below.
  • the system 105 further includes an electrostatic module that is electrically connected to an electrostatic ring, as described below.
  • the electrostatic module in an example embodiment is a 12 kV electrostatic module and it is configured to electrostatically charge an item, such as the electrodes, ring, and/or tube described below.
  • a light 1017 is positioned at a front end of the system 105 in the fluid-expelling region 175 such that the light aims light toward the direction where fluid is expelled.
  • the light may be an LED light, for example.
  • the light can automatically illuminate when any portion of the system is activated.
  • LED light has 100 lumens with the light being directly focused on the path of the liquid that is being sprayed out of the sprayer nozzle.
  • the light can be in multiple colors to allow the user to illuminate florescent antimicrobial solutions (infrared light).
  • the light is black light. At least a portion of the light or electrical components of the light may be insulated from contact with the electrically charged field.
  • a metal contact on the high voltage electrostatic ring 1120 that is exposed at a rear part of the electrostatic ring 1120 .
  • a high voltage wire from the electrostatic module is soldered or otherwise electrically connected to this metal contact.
  • the soldering point and adjacent exposed metal is completely sealed by epoxy or other insulator to avoid oxidation and leakage of ions from the electrodes.
  • a ground wire from electrostatic module is connected to ground plate.
  • the ground wire is embedded in the handle of the sprayer so that it is in contact with the operator during operation. This serves as electrical return loop to complete an electrical circuit.
  • the electrostatic ring is electrically charged so that it transfers the charge to the electrodes that are electrically connected to the ring.
  • the electrodes themselves are individually connected to the electrostatic module.
  • the electrostatic ring 1120 includes the three electrodes (which may be made or stainless steel for example) that are electrically isolated by a rubber washer and rubber threaded cap, as described below.
  • the electrostatic ring 1120 that holds electrodes is metal and is built inside of the nozzle housing.
  • the electric static ring is isolated inside a nozzle housing that acts as a protective barrier.
  • the electrostatic ring 1120 contains three internal threaded holes that accept the three electrodes.
  • a rubber washer is inserted between the electrostatic ring 1120 and an insulator on each electrode. The rubber washer aids in tightening of the electrode to the electrostatic ring 1120 and also assists in avoiding leakage of ions from the electrode.
  • the whole electrostatic ring 1120 is isolated inside the nozzle housing so that it acts a protective barrier.
  • FIG. 14 shows the nozzle component 1110 , which is sized and shaped to be removably positioned within the cavity 1305 of the nozzle housing 1105 .
  • the nozzle component 1110 houses one or more nozzles 1115 , each of which is configured to deliver fluid in a predetermined plume or spray pattern.
  • the nozzle component 1110 includes one or more protrusions 1405 or other structural elements that are sized and shaped to receive complementary structures on the nozzle tool 1205 , as described below. Note that the electrostatic ring 1120 with the electrode assemblies 1310 is positioned around the nozzles 1115 with the electrodes of the assemblies 1310 being aligned along an axis that is parallel with an axis of the nozzles.
  • FIG. 15 shows an electrode assembly 1310 , which includes a high voltage ion discharge electrode 1510 (or pin) and an insulation element 1520 positioned over the electrode or pin 1510 .
  • the insulation element 1520 is sized and shaped so that it covers substantially all of the electrode 1510 and exposes only a front portion of the electrode 1510 in the form of a frontward facing conical tip that is aligned along an axis.
  • FIG. 16 shows the electrode 1510 (sometimes referred to as a pin) without the insulation element 1520 .
  • Each high voltage ion discharge electrode in the system has the same structure shown in FIG. 15 , a metal pin that is overmolded with plastic at the middle of the pin. Each metal pin has one sharp spike at one end and external screw thread at the other end.
  • the insulation element which can be plastic, at the middle of pin is for easy gripping during installation and removal, although the pins are not necessarily removable.
  • the plastic is also used to insulate the pin and prevent it from releasing ions from body of pin.
  • the electrode assembly can also be a set of electrode assemblies of the type shown in FIG. 15 .
  • Each high voltage ion discharge electrode is to be screwed into an internal screw thread on the high voltage ring 1120 coupled to the nozzle component 1110 . Except for its sharp spike at the end, each high voltage ion discharge electrode is completely covered and concealed by the insulator element after it is installed to the high voltage ring 1120 .
  • a first detachment mechanism 1905 such as a ring attached to a biased or tensions structure such as a pin
  • a second detachment mechanism 1920 such as a rotatable wheel or cap 1921 , that can be collectively actuated by a user to enable detachment and locking reattachment of the reservoir 125 to the outer housing.
  • FIG. 20 shows a view of the portion of the cap 1921 that communicates with and covers the interior cavity of the reservoir 125 .
  • a one-way valve 2003 such as a duckbill valve, is positioned in the cap 1921 and provides a vent for fluid to enter into the interior of the reservoir from atmosphere as the pump of the system pulls a vacuum in the reservoir.
  • an outlet conduit 2115 fluidly communicates with the internal region of the reservoir when the reservoir is attached and lockingly sealed to the housing.
  • the outlet conduit 2115 can be fluidly attached to a pump inlet conduit 2120 of the pump 1005 such as via a hose (not shown).
  • the pump 1005 has an outlet conduit 2125 that can be fluidly attached to the hose coupler 1320 ( FIG. 13 ) of the nozzle assembly. In this manner, the pump can create a pressure differential that draws fluid from the reservoir and drives it to the nozzle assembly.
  • the sprayer can be powered by a DC battery, it can still “pump” electrical charges to the aqueous solution by means of the electrostatic module inside the sprayer.
  • opposite charge may be supplied to compensate the charge spent to the liquid system. This is effectively achieved by means of the ground plate on the handle grip, opposite charge can flow through the ground plate from user to electrostatic module to counterbalance the charge lose to the liquid system.
  • the pump 1005 is a direct current (DC) pump although an AC pump or any other type of pump can be used as well.
  • the pump includes a rotary motion motor with a connecting rod that drives a diaphragm in an up and down motion when activated.
  • a pump cavity creates a pressure differential such as by pulling a vacuum relative to the interior of the reservoir to suck fluid through the pump inlet conduit 2120 from the reservoir.
  • Upward movement of the diaphragm pushes fluid of the pump cavity press through the pump outlet conduit 2125 toward the hose coupler 1320 of the nozzle assembly via an attachment hose that attaches the pump outlet conduit 2125 to the hose coupler 1320 .
  • FIG. 23 shows an exemplary embodiment of the pump 1005 , which includes the pump inlet conduit 2120 and the pump outlet conduit 2125 .
  • the system uses a constant speed motor such that the speed of the motor when in use is not vary based upon the remaining power and the battery.
  • This constant speed ability can be achieved by a motor circuit or other electrical element positioned between the battery and the motor.
  • the motor circuit intercepts and monitors the phase changing frequency and adjust the frequency or otherwise regulates the power signal to maintain a constant speed for the motor during operation.
  • This constant speed of the motor has several advantages over variable speed motor including the following.
  • the electrodes and the nozzle are aligned along a common parallel axis. This directs the liquid or aerosol toward a desired object based on where the user points the nozzles. In an embodiment, the electrodes do not physically contact the fluid propelled through the nozzles. In another embodiment, the electrodes physically contact the fluid propelled through the nozzles.
  • FIG. 44A shows a schematic diagram that illustrates an electrostatic charging process for the system, referred to herein as electrostatic wrapping.
  • the system is configured to electrostatically charge the fluid at two or more locations thereby resulting in an electrostatically supercharged fluid as the fluid exits the nozzle assembly.
  • the system electrostatically charges the fluid within the reservoir (tank) via the duck bill valve in the upper region of the reservoir. As the fluid passes through the pump and through the electrostatic module, it is charged again at the metal ring of the nozzle assembly. This is described in more detail below.
  • FIG. 44B shows a cross-sectional view of the system with the pump off
  • FIG. 44C shows the system with the pump powered on.
  • the valve assembly between the base 2415 and the tank 2410 is mechanically configured such that a valved fluid passageway between the tank 2410 and the base 2415 automatically opens when the tank 2410 is properly seated in the base 2415 .
  • FIG. 34 shows a perspective view of the combined valve assemblies of the tank and the base.
  • FIG. 35 shows a cross-sectional, perspective view of the combined valve assembly.
  • the valve assembly 3215 of the tank includes the one way valve cap 3250 , which partially surrounds a spring valve 3420 that is closed in a default state.
  • the valve assembly 3310 of the base 2415 includes a filter 3415 for filtering fluid that passes through the valve.
  • FIG. 36 shows a perspective view of the sprayer assembly with an outer housing of the sprayer assembly being partially transparent.
  • the sprayer assembly is formed of an outer housing that has an ergonomic shape.
  • a nozzle assembly 3615 is positioned within the outer housing in fluid communication with the tubing 2425 ( FIG. 25 ) that is fluidly coupled to the fluid in the tank 2410 .
  • the outer housing includes one or more internal tubular members that provide a passageway for fluid to flow to the nozzle assembly 3615 .
  • the sprayer assembly also includes an internal pump 3610 that causes a pressure differential to cause fluid to flow from the tank, through the tubing 2425 , and into the nozzle assembly 3615 of the sprayer assembly.
  • the sprayer assembly includes a first actuator 2712 that can be actuated by a user to activate the pump 3610 .
  • the sprayer assembly also includes a second actuator 2714 , such as a button, that activates the electrostatic module of the device.
  • FIG. 37 shows a perspective, exploded view of the nozzle assembly 3615 .
  • FIG. 38 shows a perspective, cross-sectional view of the nozzle assembly in an assembled state.
  • FIG. 39 shows a side, cross-sectional view of the nozzle assembly in an assembled state.
  • the nozzle assembly 3615 can optionally be configured in a similar manner to the nozzle assembly of any of the other embodiments disclosed herein.
  • the nozzle assembly includes a nozzle housing 3705 having an internal cavity that removably contains a nozzle holder or nozzle component 3710 in which one or more nozzles are positioned in a manner similar to the previous embodiment.
  • An annular electrostatic ring 3720 is mounted on a forward edge of the nozzle housing 3705 .
  • the electrostatic ring 3720 forms an opening through which fluid is expelled from the tank/reservoir and through at least one of the nozzles by virtue of the pump creating a pressure differential.
  • An insulator element such as a rubber ring can be positioned on the electrostatic ring to electrically shield it from the outer housing of the sprayer.
  • a metal contact on the high voltage electrostatic ring that is exposed at a rear part of the electrostatic ring.
  • a high voltage wire from the electrostatic module is soldered or otherwise electrically connected to this metal contact.
  • the soldering point and adjacent exposed metal is completely sealed by epoxy or other insulator to avoid oxidation and leakage of ions from the electrodes.
  • a ground wire from electrostatic module is connected to ground plate.
  • the ground wire is embedded in the handle of the sprayer so that it is in contact with the operator during operation. This serves as electrical return loop to complete an electrical circuit.
  • the electrostatic ring is electrically charged so that it transfers the charge to the electrodes that are electrically connected to the ring.
  • the electrodes themselves are individually connected to the electrostatic module.
  • a one-way check valve can be positioned inside the nozzle assembly 3615 such that fluid must flow through the one way valve in order to flow out of the nozzle assembly.
  • the check valve closes and prohibits fluid from exiting the nozzle assembly when the trigger is released by the user. In this manner, residual fluid is prohibited from being released out of the system and onto the ground when the system is not in use.
  • An ion tube isolator 3905 is mounted within the nozzle assembly of the sprayer.
  • FIG. 40 shows a perspective, cross-sectional view of the ion tube isolator 3905 .
  • the ion tube isolator 3905 functions a manner similar to the ion tube isolator described above with respect to the previous embodiment.
  • the ion tube isolator 3905 electrically charges fluid flowing from the tank or pump and toward the nozzles.
  • the ion tube isolator includes a tube 3910 through which fluid passes as well as a high voltage electrode assembly or module that is electrically connected to the electrostatic module and that is made of a conductive material such as metal.
  • the module can include a lead where it can be electrically connected to the electrostatic module such as via a conductive wire.
  • the module is a conductive material, such as metal.
  • the module is conductive and the remainder of the tube 3910 is non-conductive and/or is insulated from contact with any other part of the system.
  • the module may also be surrounded by an insulator that insulates it from contact with any other part of the system.
  • the module directly contacts the fluid as it flows and passes a charge to the fluid through direct contact with the fluid. In this way, the ion tube isolator 3905 electrostatically charges the fluid prior to the fluid passing through the nozzle.
  • FIG. 41 shows a perspective view of a nozzle tool 4105 that removably and mechanically couples to the nozzle assembly for manipulating the nozzle component 3710 .
  • the nozzle tool 4105 is sized and shaped to be inserted into a front opening in the nozzle housing 3705 .
  • the nozzle tool 4105 mechanically couples to the nozzle component 3710 in a manner that permits the nozzle tool 4105 to lock and/or move the nozzle component relative to the nozzle housing.
  • the tool 4105 couples to and removes nozzle component by a counter clock turn and by pushing in until nozzle component decouples and can be removed.
  • pushing the nozzle component deeper into the housing using the tool causes a threaded portion of the nozzle component to engage a threaded nut or bolt of the housing that secures the nozzle component to the housing. The user can then unthread the nozzle tool and remove it from the housing.
  • the tool 4105 can also be used to adjust the three-way nozzle by turning it in a desired rotational direction.
  • the user can select two or more different spray patterns by turning the nozzle component so that a desired nozzle fluidly couples to the reservoir.
  • a portion of the tool mechanically attaches to the nozzle component so that it can apply force to the nozzle component and rotate it until a desired nozzle is in a position that is fluidly coupled to a fluid stream from the reservoir.
  • the system may include a mechanism, such as spring and ball, that provides a noise (such as a clicking sound) when a nozzle is in a position to spray fluid.
  • the nozzle tool 4105 is sized and shaped to be grasped by a user. It can include a coupler region that can be removably coupled to a drive device, such as a wrench, or grasped by a user. In an embodiment, the coupler region is hexagonal shaped so that it can be mechanically coupled to a wrench including a socket wrench.
  • the nozzle tool includes a cavity or seat that is size and shaped to receive the outer portion of the nozzle component. For example, the seat can have a shape that complements and receives the shape of the nozzle component.
  • the nozzle tool also includes at least one opening that interlocks with a complementary-shaped protrusion on the nozzle component.
  • FIG. 42A shows a perspective view of a pump housing of the system, which includes a pneumatic head.
  • the pump housing is sized and shaped to receive the pump, which can be similar or the same as the pump the pump described above with respect to the previous embodiment.
  • the pump housing 4210 includes a top and a bottom inlet opening 4220 and a top and a bottom outlet opening 4230 . Valves are positioned in each of the top and bottom in the openings for a total for valves. Fluid flows into the pump to the inlet opening 4220 and out of the pump through the outlet opening 4230 .
  • the pump is a rotary pump that includes a connecting rod and a diaphragm.
  • the diaphragm is positioned or coupled within a top diaphragm opening 4235 and an aligned bottom diaphragm opening.
  • the rotary motion of the motor turn into the swing of a connecting rod causes the diaphragm to move up and down relative to the diaphragm opening 4235 .
  • the process of downward movement of the diaphragm a pump cavity will suck fluid through the inlet opening 4220 .
  • Upward movement of the diaphragm presses fluid out of the outlet opening 4230 and towards the nozzles.
  • the mechanical transmission parts and a pump cavity are isolated by the diaphragm.
  • the diaphragm does not need oil for auxiliary lubricating during the process of transmission, extraction and compression of the fluid.
  • the diaphragms have two holes that are cut into a circle.
  • the valves (which can be plastic, for example) have a seating position inside of a pneumatic gasket.
  • a top and a bottom lid of the housing secures the rubber diaphragms like an o-ring. The rubber diaphragm, when properly inserted, makes a water tight seal when screwed down to a pneumatic head assembly of the housing.
  • the top and bottom reservoir outlet openings allow water to flow in and out of each channel.
  • the valves are inserted into the rubber diaphragms.
  • the two channels equalize the pressure when the pneumatic valves are opening and closing to provide continues motion of suction and pressure.
  • the pneumatic head has multiple channels or openings thereby allowing water to flow through the top and the bottom by using applied force from a DC motor.
  • the motor rotates with a bearing that spins on an oval axis inside of the cam housing causing a up and down motion and side to side motion.
  • the rubber diaphragm can be of a harder and thicker material which will act as a trampoline when the cam housing is attached to both sides of the diaphragm.
  • the diaphragms move up and down generating an internal pressure.
  • the valves will open and close allowing water pressure to circulate in and out causing the system to be under a constant suction and flow pressure.
  • the pressure is regulated and is equal to the suction pressure.
  • the pressure can be adjusted by the thickness of the diaphragms and the rpm of the motor.
  • FIG. 43 shows another embodiment of a backpack system.
  • This embodiment of the backpack system includes an elongated wand 4310 that extends outward from a handle 4315 of the system.
  • the wand 4310 can be sized and shaped to space the nozzle 4320 from the handle 4315 , such as to enable a user to reach regions that are spaced apart from the handle 4315 .
  • FIG. 45 shows a perspective view of another embodiment of a sprayer system 4505 , which is similar but smaller in size to the embodiment of FIG. 9 .
  • the system 4505 has an outer housing 110 that forms a handle 4608 that can ergonomically be grasped by a single hand of a user.
  • the sprayer handle is ergonomically designed to fit all hand sizes.
  • a ground wire or other structure can be embedded into the handle, as discussed with respect to the previous embodiments.
  • the ground wire is positioned so that it will electrically contact the user's hand when the user grasps handle during use of the device.
  • the ground wire is made of copper and is a copper strip of material that contacts the user's hand when the user grasps the device although other materials, such as stainless steel, may be used.
  • the system 4505 includes at least one actuator, such as a trigger 4606 , that can be actuated to turn on and also turn off an internal pump, as well as a second actuator, such as button 4602 , for turning on and off an electrostatic charger for expelling a plume of electrostatically charged fluid from a fluid expelling region 175 of the system 105 .
  • the system 4505 has a removable tank or reservoir 125 for storing fluid to be expelled. There is sufficient space clearance between the reservoir 125 and the handle 4608 for a comfortable fit for the user when the user grasps the handle 4608 . In an embodiment, when fully loaded with liquid the sprayer system weighs no more than 3 pounds although the weight can vary. In an embodiment, the reservoir 125 can contain up to half a liter of fluid although this can also vary.
  • the system 105 ejects high voltage ions to the air by means of a plurality of (such as three or more) detachable, high voltage ion discharge electrodes or pins of a predetermined spacing from each other on a rim of a nozzle holder (which can be as described above with reference to FIG. 14 ).
  • the system can include a nozzle assembly such as any of the assemblies described herein.
  • the high voltage ion discharge electrodes are each positioned along an axis that is in parallel to an axis of a spray nozzle so that the spray and ions are emitted in the same direction and along a parallel axis and therefore the droplets in the spray are surrounded and covered by ion stream and can be efficiently charged when they meet the ion stream.
  • the electrodes thus emit, propel, or otherwise send out ions or charge in a direction parallel to the direct of fluid flow or an average direction of fluid flow from the nozzles.
  • FIG. 46 shows the system 4505 with a portion of the outer housing 110 removed to show internal components of the system 4505 .
  • the system 4505 includes a pump 4605 that is powered by a battery 4610 , which can be rechargeable.
  • the pump 4605 can be configured according to any of the embodiments of the pumps described herein, such as shown in FIG. 42A and related figures.
  • the pump 4605 is fluidly coupled to fluid within the reservoir 125 such that the pump can cause a pressure differential to draw fluid from the reservoir and into a nozzle assembly 1015 , which can be configured as described above in the previous embodiment.
  • the system 105 further includes an electrostatic module that is electrically connected to an electrostatic ring, as described above with respect to the previous embodiments.
  • the electrostatic module in an example embodiment is a 12 kV electrostatic module and it is configured to electrostatically charge an item, such as the electrodes, ring, and/or tube described below. In another embodiment, the electrostatic module is a 7 kV electrostatic module.
  • the system of 4505 includes a male member 4705 that has a first end positioned within the reservoir 125 and a second end positioned outside of the reservoir 125 .
  • the male member 4705 mechanically inserts into a female member 4710 in the housing when the reservoir 125 is attached to the outer housing 110 .
  • the male member 4705 has an internal lumen that communicates with a lumen within the housing and that ultimately lead to the nozzle assembly of the system and that also passes through the pump, such as the type of pump shown in FIG. 42A . In this manner, fluid can flow from the reservoir 125 to the nozzle assembly via the male member 4705 and the female member 4710 when the pump is activated.
  • an upper region of the reservoir 125 includes an opening or spout that is covered by a cap 4920 .
  • the cap 4920 can move between a closed state wherein the 4920 sealingly covers the spout of the reservoir 125 and an open state wherein the cap 4910 does not cover the spout. When the spout is uncovered, a liquid can be poured into the reservoir 125 .
  • the cap 4910 is secured to a top of the reservoir 125 in a hinged manner such that the cap 4910 can pivotably move between the open and closed position.
  • the cap can have a beveled edge that seals with the reservoir such as in the manner of a sink stopper.
  • the cap is a 1 inch diameter cap.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Catching Or Destruction (AREA)
  • Nozzles (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
US15/387,319 2015-12-21 2016-12-21 Electrostatic fluid delivery backpack system Abandoned US20170173607A1 (en)

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US18/078,758 US20230106729A1 (en) 2015-12-21 2022-12-09 Electrostatic fluid delivery system

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