US20140054323A1 - Horizontal pumps, refill units and foam dispensers with integral air compressors - Google Patents

Horizontal pumps, refill units and foam dispensers with integral air compressors Download PDF

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Publication number
US20140054323A1
US20140054323A1 US13/792,034 US201313792034A US2014054323A1 US 20140054323 A1 US20140054323 A1 US 20140054323A1 US 201313792034 A US201313792034 A US 201313792034A US 2014054323 A1 US2014054323 A1 US 2014054323A1
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US
United States
Prior art keywords
liquid
pump
refill unit
chamber
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/792,034
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English (en)
Inventor
John J. McNulty
Robert L. Quinlan
Nick E. Ciavarella
James E. Motyka
Todd A. Spiegelberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Go-Jo Industries Inc
Original Assignee
Go-Jo Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Go-Jo Industries Inc filed Critical Go-Jo Industries Inc
Priority to US13/792,034 priority Critical patent/US20140054323A1/en
Assigned to GOJO INDUSTRIES, INC. reassignment GOJO INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SPIEGELBERG, TODD A., MCNULTY, JOHN J., CIAVARELLA, NICK E., QUINLAN, ROBERT L., MOTYKA, JAMES E.
Priority to MX2015002377A priority patent/MX2015002377A/es
Priority to CA2882714A priority patent/CA2882714A1/en
Priority to BR112015003842A priority patent/BR112015003842A2/pt
Priority to CN201380055500.9A priority patent/CN104736251A/zh
Priority to JP2015528643A priority patent/JP2015533528A/ja
Priority to PCT/US2013/056106 priority patent/WO2014031814A1/en
Priority to EP13763128.9A priority patent/EP2888056B1/en
Priority to AU2013305789A priority patent/AU2013305789A1/en
Priority to TW102130032A priority patent/TW201429859A/zh
Priority to EP19151234.2A priority patent/EP3488937B1/en
Assigned to PNC BANK, NATIONAL ASSOCIATION, AS AGENT reassignment PNC BANK, NATIONAL ASSOCIATION, AS AGENT SECURITY AGREEMENT Assignors: GOJO INDUSTRIES, INC.
Publication of US20140054323A1 publication Critical patent/US20140054323A1/en
Priority to SA515360055A priority patent/SA515360055B1/ar
Priority to US14/797,728 priority patent/US9854947B2/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/14—Foam or lather making devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1211—Dispensers for soap for liquid or pasty soap using pressure on soap, e.g. with piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1087—Combination of liquid and air pumps
    • 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
    • B05B7/0018—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 devices for making foam
    • B05B7/0025—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 devices for making foam with a compressed gas supply

Definitions

  • the present invention relates generally to liquid pumps, refill units for foam dispensers and foam dispenser systems, and more particularly to horizontal liquid pumps, refill units and foam dispensers having integral air compressors.
  • Liquid dispenser systems such as liquid soap and sanitizer dispensers, provide a user with a predetermined amount of liquid upon actuation of the dispenser.
  • it is sometimes desirable to dispense the liquid in the form of foam by, for example, injecting air into the liquid to create a foamy mixture of liquid and air bubbles.
  • Embodiments of disposable refill units for foam dispensers that have an integral air compressor are provided.
  • One embodiment includes a container and a liquid pump.
  • the liquid pump includes a liquid chamber defined at least in part by a liquid inlet valve and a liquid outlet valve.
  • a piston reciprocates horizontally in the liquid chamber.
  • a mixing chamber is located downstream of the liquid chamber.
  • the mixing chamber is in fluid communication with the liquid chamber and has an air inlet.
  • a sanitary seal is located proximate the air inlet to allow air to enter the mixing chamber and prevent liquid from exiting the mixing chamber through the air inlet
  • a disposable refill unit for a foam dispenser has an integral air compressor and includes a container and a liquid pump.
  • the liquid pump has a liquid chamber defined at least in part by a liquid inlet valve and a liquid outlet valve.
  • a mixing chamber is located downstream of the liquid chamber.
  • the mixing chamber includes an air inlet and a sanitary seal located proximate the air inlet. The sanitary seal allows air to enter the mixing chamber and prevents liquid from exiting the mixing chamber through the air inlet.
  • the container, the liquid pump and the sanitary seal are disposable without disposing of the air compressor.
  • Embodiments of foam dispensers for receiving replaceable refill units are also disclosed.
  • One embodiment of a foam dispenser includes a housing, an actuator and an air compressor.
  • the dispenser includes a connector that releasably connects the air compressor to an air inlet on a disposable refill unit when the disposable refill unit is installed in the foam dispenser and disconnects from the disposable refill unit when the refill unit is removed.
  • the actuator is configured to move horizontally and actuate the air compressor.
  • a refill unit mounting bracket is included to receive and releasably retain a replaceable refill unit.
  • a refill unit includes a container of foamable liquid and a pump secured to the container.
  • the pump includes a pump housing having a first aperture therethrough.
  • a liquid inlet valve is provided through the first aperture.
  • the pump also includes one or more liquid inlet passages through the housing.
  • the liquid inlet valve includes a stem portion.
  • the stem portion includes a projection member on one end and a sealing member on the other. The projection member fits through the aperture from outside of the pump housing and the sealing member is located upstream of the one or more liquid inlets.
  • FIG. 2 illustrates a prospective view of the generic dispenser 101 having an air compressor 150 attached thereto;
  • FIG. 5 illustrates another exemplary embodiment dispenser system 500 with a refill unit 510 installed therein;
  • FIG. 7 illustrates a plan view of an exemplary embodiment of an air compressor 550 for use in a dispenser system 500 ;
  • FIG. 8 illustrates a cross-section of an exemplary embodiment of a refill unit 510 including a container 512 and liquid pump 520 ;
  • FIG. 9 illustrates a cross-section of an exemplary embodiment of the refill unit 510 installed in a dispenser 501 mated with air compressor 550 ;
  • FIG. 10 illustrates a cross-section of an exemplary embodiment of a pump 1000 for use in a refill unit of a foam dispenser in a discharged position
  • FIG. 11 illustrates a cross-section of the exemplary embodiment of a pump 1000 for use in a refill unit of a foam dispenser in a charged position
  • FIG. 12 illustrates a cross-section of another exemplary pump 1200 .
  • FIG. 1 illustrates an exemplary embodiment of a foam dispensing system 100 with a side of the housing being transparent.
  • Foam dispensing system 100 includes a disposable refill unit 110 installed in a foam dispenser 101 .
  • the disposable refill unit 110 includes a container 112 connected to a liquid pump 120 .
  • Liquid pump 120 includes an air inlet 124 .
  • the disposable refill unit 110 may be placed within housing 102 of the dispenser 101 and releasably placed in fluid communication with air compressor 150 .
  • air compressor is used interchangeably herein with the term “air pump.”
  • the foam dispenser system 100 may be a wall-mounted system, a counter-mounted system, an un-mounted portable system movable from place to place or any other kind of foam dispenser system.
  • Foam dispenser 101 includes an air compressor 150 secured thereto. Air compressor 150 may be permanently mounted to foam dispenser 101 . Air compressor 150 includes a conduit or air passage 152 , with a connector 154 for releasably connecting to the air inlet 124 of liquid pump 120 . Optionally, connector 154 may be secured to pump 120 . In one embodiment, connector 154 is a two-part connector, and one part is connected to pump 120 and the other to air passage 152 .
  • the connector 154 is made up of a male fitting on one of the liquid pump air inlet 124 or the air passage 152 of air compressor 150 and a female fitting on the other. Accordingly, refill unit 110 and pump 120 may be removed from dispenser housing 102 and discarded without removal of the air compressor 150 .
  • Connector 154 may be a quick-release connector, a releasable snap-fit connector, a releasable compression-fit connector, a slip-fit connector or a sealing member such as, for example, a foam or flexible member that compresses to form a seal between air passage 152 and pump 120 .
  • the air compressor 150 may be any type of air compressor such as, for example, a compressible bellows, a rotary air compressor, a piston air compressor, a fan, a compressor, a positive displacement pump or the like.
  • the container 112 forms a liquid reservoir 114 .
  • the liquid reservoir 114 contains a supply of a foamable liquid within the disposable refill unit 110 .
  • the contained liquid could be for example a soap, a sanitizer, a cleanser, a disinfectant or some other foamable liquid.
  • the liquid reservoir 114 is formed by a collapsible container 112 , such as a container made of thin plastic or a flexible bag-like container.
  • the liquid reservoir 114 may be formed by a rigid housing member, or have any other suitable configuration for containing the foamable liquid without leaking.
  • the container 112 may advantageously be refillable, replaceable or both refillable and replaceable. In other embodiments, the container 112 may be neither refillable nor replaceable.
  • the installed refill unit 110 may be removed from the foam dispenser system 100 .
  • the empty or failed disposable refill unit 110 may then be replaced with a new disposable refill unit 110 including a liquid-filled reservoir 114 .
  • the air compressor 150 remains located within the foam dispenser 101 while the disposable refill unit 110 is replaced.
  • the air compressor 150 is also removable from the housing 102 of the dispenser 101 , separately from the disposable refill unit 110 , so that the air compressor 150 may be replaced without replacing the dispenser 101 , or alternatively to facilitate removal and connection to the refill unit 110 .
  • sanitary sealing may be used to isolate the air compressor 150 from the portions of the liquid pump 120 that contact liquid, so that the air compressor 150 mechanism does not contact liquid during operation of the foam dispenser system 100 .
  • the housing 102 of the dispenser 101 further contains one or more actuating members 104 to activate the liquid pump 120 and air compressor 150 .
  • actuator or actuating mechanism includes one or more parts that cause the dispenser 101 to move liquid, air or foam.
  • Actuator 104 is generically illustrated because there are many different kinds of pump actuators which may be employed in the foam dispenser system 100 .
  • the actuator of the foam dispenser system 100 may be any type of actuator such as, for example, a manual lever, a manual pull bar, a manual push bar, a manual rotatable crank, an electrically activated actuator or other means for actuating the liquid pump 120 and air compressor 150 within the foam dispenser system 100 .
  • Electronic actuators may additionally include a sensor to provide for a hands-free dispenser system with touchless operation.
  • Various intermediate linkages connect the actuator member 104 to the pump 120 and or air compressor 150 within the system housing 102 .
  • the exemplary liquid pump 120 and air compressor 150 are horizontal pumps. That is, the pumps are actuated by a substantially horizontal movement.
  • the external actuator 104 may be operated in any manner, so long as the intermediate linkages transform that motion to a substantially horizontal motion to activate the liquid pump 120 and air compressor 150 .
  • dispenser 101 includes a manual actuator lever 104 that is secured to housing 102 by a hinge 103 .
  • actuator lever 104 includes a pivotal contact element 105 that contacts actuator arm 156 to activate the pump 120 and air compressor 150 .
  • Pump 120 includes a dispensing nozzle 122 which extends below the bottom of housing 102 .
  • a refill retaining bracket 180 is secured to housing 102 .
  • Refill retaining bracket 180 releasably retains the refill unit 110 in foam dispenser 101 .
  • Refill unit 110 including the liquid pump 120 and outlet nozzle 122 may be readily inserted and removed from foam dispenser 101 without removing the air compressor 150 from the foam dispenser. Accordingly, all of the elements that contact liquid, “wet parts,” may be disposed of without the need to dispose of components that do not contact liquid.
  • FIG. 2 illustrates a prospective view of an embodiment of dispenser 101 .
  • Dispenser 101 includes a housing 102 , which is illustrated as transparent for purposes of clairity.
  • Housing 102 includes a front portion 205 that is attached by hinge 203 .
  • Front portion 205 of housing 102 rotates down to facilitate inserting a refill unit (not shown) into dispenser 101 .
  • front portion 205 of housing 102 includes an actuator lever 104 .
  • Housing 102 includes an opening 220 in the bottom thereof which allows nozzle 122 to dispense foam to an object located below dispenser 101 .
  • Secured to housing 102 is air compressor 150 .
  • air compressor 150 includes a cylinder 208 .
  • Cylinder 208 includes a side wall and a bottom wall.
  • a piston 206 fits within cylinder 208 and sealing member 401 ( FIG. 4 ) creates a seal between the outside wall of piston 206 and the inside wall of cylinder 208 .
  • Secured to piston 206 is an actuator arm 156 .
  • Actuator arm 156 includes a pair of extensions 202 , which are linked to cross member 204 .
  • Air compressor 150 also includes air compressor outlet 152 that releasably engages with liquid pump 120 .
  • air compressor 150 includes an air inlet 404 ( FIG. 4 ) and one-way air inlet valve 406 .
  • One-way air inlet valve 406 allows air to enter air compressor 150 to recharge the air chamber 410 .
  • air compressor 150 includes a biasing member 402 to move the piston 206 to its outermost position and recharge the air chamber 410 .
  • FIG. 3 illustrates a cross-section of an exemplary embodiment of a refill unit 110 that includes pump 120 and container 112 .
  • Container 112 includes a neck portion 302 .
  • Pump 120 is connected to the neck 302 of container 112 by a press fit connection.
  • a cap (not shown) may connect pump 120 to container 112 .
  • other means such as, for example, a compression fit, welding, adhesive, friction fit, etc. may be used to join pump 120 with container 112 .
  • Pump 120 includes a pump housing 306 that contains a liquid chamber 320 .
  • Pump housing 306 includes an inlet opening 312 .
  • a one-way liquid inlet valve 314 is located in the inlet opening 312 .
  • the upper portion of liquid inlet valve 314 includes slots (not shown) for liquid to pass through and flow into inlet opening 312 .
  • additional liquid inlet openings may be provided.
  • One-way liquid inlet valve 314 may be any type of valve such as, for example, a flapper valve, a conical valve, a plug valve, an umbrella valve, a duck-bill valve, a slit valve, a mushroom valve or the like.
  • One-way liquid inlet valve 314 allows liquid to flow into liquid chamber 320 and prevents liquid from flowing out of liquid chamber 320 back into container 112 .
  • Pump housing 306 includes a liquid outlet opening 330 that has a one-way liquid outlet valve 332 associated therewith.
  • One-way liquid outlet valve 332 may be any type of valve such as, for example, a flapper valve, a conical valve, a plug valve, an umbrella valve, a duck-bill valve, a slit valve or a mushroom valve, so long as it opens under pressure to allow liquid to exit the liquid chamber 320 , but does not let air, liquid or foam enter the liquid chamber 320 through opening 330 .
  • the neck 302 of the container 112 may be located towards the front of the refill unit 110 rather than in the center of the refill unit 110 .
  • the liquid inlet opening 312 and liquid outlet opening 330 are offset from one another.
  • the liquid outlet opening 330 is located closer to the front of the refill unit 110 than the liquid inlet opening 312 .
  • sleeve 324 is not required; however, in that embodiment, the liquid inlet and liquid outlets are located so that the stroke of the piston 360 does not cause piston head 352 to pass the liquid inlet 312 and liquid outlet 330 during operation.
  • the inlet and outlet valves 314 , 332 are aligned on a centerline of the container 112 .
  • one or both of the inlet and outlet valves 314 , 332 are located off of the centerline of the container 112 .
  • both the inlet and outlet valves 314 , 332 are located off of the centerline of the container 112 .
  • One or both may be located closer to the front of the container.
  • the neck 302 of the container 112 may also be offset from the centerline of the container 112 .
  • the neck 302 of the container 112 is offset towards the front of the container.
  • offset from the centerline of the container means that the object is offset from at least one centerline, not necessarily from all potential centerlines of the container.
  • Pump 120 includes a liquid piston 350 .
  • Liquid piston 350 has a piston head 352 that has a liquid piston seal 356 .
  • Liquid piston seal 356 may be any type of seal such as, for example, a wiper seal, an o-ring, a gasket or the like.
  • Liquid piston seal 356 engages the inside wall of sleeve 324 .
  • liquid piston seal 356 has enough contact against sleeve 324 so that liquid does not pass by the seal, but the contact is limited so that less energy is necessary to move the piston 350 .
  • Pump 120 may include a biasing member (not shown) to move piston 350 outward when no horizontal force is being applied to the piston 350 .
  • piston 350 may have an engagement member (not shown) that engages with actuator arm 156 to move piston 350 to its outermost position, when no force is being applied to the actuator arm 156 .
  • Pump housing 306 includes mixing chamber 336 located downstream of outlet opening 330 . As fluid passes by one-way outlet valve 332 , it enters mixing chamber 336 .
  • Mixing chamber 336 includes an air inlet 124 .
  • air inlet 124 includes a one-way valve 338 .
  • One-way valve 338 may be any type of one-way valve such as, for example, those identified above.
  • One-way inlet valve 338 is a sanitary valve in that it prevents liquid or foam from traveling past and contaminating air compressor 150 or other parts that remain with the dispenser 101 when the refill unit 110 is removed from the dispenser 101 . It is desirable to keep the parts that remain with the dispenser 101 free from contamination with the liquid or fluid to prevent bacteria from growing in the dispenser 101 . Thus, a user need only replace the refill unit 110 including the wet parts without the need for replacing the air compressor 150 .
  • the air pump(s) or air compressor(s) disclosed herein include an air inlet having a one-way air inlet valve therethrough.
  • the one-way air inlet valve allows air to enter the air pump to recharge the air pump.
  • the air inlet is located inside of the foam dispenser housing so that air from inside of the dispenser is used to feed the air pump. Using air from inside the dispenser may help to prevent moisture from entering the air pump through the air inlet and air inlet valve.
  • a vapor barrier is provided at the air inlet.
  • a vapor barrier allows air to pass through the air inlet and enter the air pump, but prevents moisture from entering the air pump.
  • a suitable vapor barrier is a woven one-way vapor barrier such as, for example, Gortex®, that is arranged so that vapor does not enter the air pump.
  • the air pump(s) or air compressor(s) include an antimicrobial substance molded into their housing.
  • One suitable antimicrobial substance contains silver ions and/or copper ions.
  • a silver refractory such as, for example, a glass, oxide or silver phosphate may be used.
  • One suitable commercially available product is Ultra-Fresh, SA-18, available from Thomson Research Associates, Inc.
  • Other suitable antimicrobial materials that may be used in the air pump include, but are not limited to VinyzeneTM, available from the Dow Chemical Company, and Bisafe, a silane-based antimicrobial product available from the RTP Company.
  • the antimicrobial substance prevents mold or bacteria from growing inside of the air pump or air compressor.
  • antimicrobial substances may be used alone or in combinations with other antimicrobial substances, such as for example, a combination of a leaching antimicrobial and a non-leaching antimicrobial.
  • Suitable leaching antimicrobials may include, for example, silver, nanosilver or copper may be used.
  • Suitable non-leaching antimicrobials include, for example, silver based and triclosan based antimicrobials.
  • Silver, copper, combinations of silver and copper alone, combinations of silver, copper and other antimicrobials may be used.
  • the use of the terms silver and copper used herein are not intended to limit the types of copper or silver to metal, and is intended to cover metal salts and other variants of copper and silver.
  • foaming cartridge 340 Downstream of mixing chamber 336 is a foaming cartridge 340 .
  • foaming cartridge 340 has a housing with one or more screens located therein.
  • foaming cartridge 340 may be replaced with one or more screens, a sponge or other porous member.
  • outlet nozzle 122 secured to pump housing 306 is outlet nozzle 122 .
  • FIG. 4 illustrates refill unit 110 installed in dispenser housing 102 and pump 120 is releasably mated with air compressor 150 .
  • the dispenser housing 102 is opened up and the refill unit 110 is lowered downward.
  • the liquid pump air inlet 124 aligns with the air compressor outlet 152 .
  • the liquid pump air inlet 124 slides into air compressor outlet 152 and is snug enough to form a seal.
  • piston 350 fits within actuator arm 156 so that cross member 204 will engage piston 350 when actuator lever 104 is moved horizontally.
  • the foam dispensing system 100 is activated by moving actuator lever 104 .
  • Actuator lever 104 causes liquid piston 350 and air piston 206 to move horizontally toward the rear of the foam dispensing system 100 . Movement of liquid piston 350 horizontally reduces the volume of liquid chamber 320 .
  • the pressurized liquid flows through passage 360 through passage 330 , past liquid outlet valve 332 and travels into mixing chamber 336 . Movement of air piston 206 reduces the volume of the air chamber 410 and pressurizes the air in the air chamber 410 .
  • the pressurized air passes through air compressor outlet 152 , past sanitary valve 338 , through liquid pump air inlet 124 and mixes with the liquid in mixing chamber 336 to form a liquid/air mixture.
  • the liquid/air mixture is forced through foaming cartridge 340 and is dispensed through nozzle 122 as a foam.
  • the biasing member 402 in the air compressor 150 urges air piston 206 away from the rear of dispenser system 100 and expands the volume of air chamber 410 .
  • Sanitary valve 338 prevents air from entering the air chamber 410 through the air compressor outlet 152 . Accordingly, air is drawn into air chamber 410 through air inlet 404 past one-way air inlet valve 406 .
  • liquid piston 330 is urged outward away from the rear of the dispenser system 100 . As liquid piston 330 moves outward, liquid chamber 320 expands creating a vacuum.
  • the vacuum pressure seals liquid outlet valve 330 and once the vacuum pressure is sufficient to overcome the cracking pressure of liquid inlet valve 314 , liquid flows from container 112 past liquid inlet valve 314 through the passage 360 and into liquid chamber 320 .
  • the pump 120 and air compressor 150 are now primed and ready for the next dispense cycle.
  • the container 512 forms a liquid reservoir 514 .
  • the liquid reservoir 514 contains a supply of a foamable liquid within the disposable refill unit 510 .
  • the contained liquid could be for example a soap, a sanitizer, a cleanser, a disinfectant or some other foamable liquid.
  • the liquid reservoir 514 is formed by a collapsible container 512 , such as a plastic container or a flexible bag-like container.
  • the liquid reservoir 514 may be formed by a rigid housing member, or have any other suitable configuration for containing the foamable liquid without leaking.
  • the container 512 may advantageously be refillable, replaceable or both refillable and replaceable. In other embodiments, the container 512 may be neither refillable nor replaceable.
  • the housing 502 of the dispenser 501 further contains one or more actuating members 504 to activate the pump 520 and air compressor 550 .
  • actuator or actuating mechanism includes one or more parts that cause the dispenser 501 to move liquid, air or foam.
  • pump actuators which may be employed in the foam dispenser system 500 such as, for example, a manual lever, a manual pull bar, a manual push bar, a manual rotatable crank, an electrically activated actuator or other means for actuating the liquid pump 520 and air compressor 550 within the foam dispenser system 500 .
  • Electronic pump actuators may additionally include a sensor to provide for a hands-free dispenser system with touchless operation.
  • Various intermediate linkages connect an actuator member to the pump 520 within the system housing 502 .
  • the exemplary liquid pump 520 and air compressor 550 are horizontal pumps. That is, they are actuated by a substantially horizontal movement.
  • the external actuator 504 may be operated in any manner, so long as the intermediate linkages transform that motion to a substantially horizontal motion on the liquid piston 850 and air piston 606 .
  • Dispenser 501 includes a manual actuator lever 504 that is secured to housing 502 by a hinge 503 .
  • actuator lever 504 includes pivotal contact elements 505 , 506 that contact pistons 602 and 850 respectively to activate the pump 520 and air compressor 550 .
  • Pump 520 includes a dispensing nozzle 522 which extends below the bottom of housing 502 .
  • a refill retaining bracket 580 is secured to housing 502 .
  • FIG. 8 is a cross-sectional view of the exemplary embodiment of a refill unit 510 .
  • Refill unit 510 includes a container 512 and liquid pump 520 secured thereto.
  • Container 512 includes a neck portion 513 with annular projections 806 .
  • Liquid pump 520 includes pump housing connector 808 .
  • Pump housing connector 808 includes an annular projection 811 that mates with the annular projections 806 to connect pump 520 to container 512 .
  • Other types of connections may be used such, for example, as a press-fit connection, a welded connection, an adhesive connection, a threaded connection or the like.
  • a sealing member (not shown) may be included between pump housing connector 808 and neck 513 to ensure a liquid tight connection between pump 520 and container 512 .
  • One-way liquid inlet valve 814 may be any type of valve, such as for example, a flapper valve, a conical valve, a plug valve, an umbrella valve, a duck-bill valve, a slit valve or a mushroom valve so long as it allows liquid to enter liquid chamber 870 but prevents liquid from flowing from liquid chamber 870 back into container 512 .
  • Nozzle housing 860 includes a pair of annular grooves 862 and 866 .
  • a pair of sealing members such as, for example, o-rings 864 and 868 are located within grooves 862 , 866 respectively.
  • the o-rings 864 , 868 form a seal with annular receptacle 554 when the refill unit 510 is placed in foam dispenser 501 .
  • the o-rings 864 , 868 seal against inside wall 608 ( FIG. 6 ) of annular receptacle 554 and form an air passageway 910 that places the liquid pump 520 in fluid communication with air compressor 550 when the refill unit 510 is inserted into foam dispenser 501 .
  • o-rings 864 , 868 may be another type of sealing member, such as, for example, a wiper seal, foam strip or the like.
  • FIGS. 10 and 11 are a cross-sectional view of an exemplary embodiment of a pump 1000 suitable for use in foam dispensers and refill units for foam dispensers.
  • Pump 1000 includes a housing 1002 .
  • Housing 1002 receives inlet plate 1008 .
  • Inlet plate 1008 includes a annular projection 1006 .
  • a neck of a container (not shown) is received within an annular groove 1004 formed between annular projection 1006 and housing 1002 .
  • Housing 1002 may be connected to the container by any means such as, for example, a threaded connection, a welded connection, an adhesive connection or the like.
  • a gasket may fit in annular groove 1004 to help form a liquid tight seal with the container.
  • Inlet plate 1008 may be integrally formed with housing 1002 .
  • Inlet plate 1008 includes one or more inlet apertures 1009 located therethrough.
  • one-way inlet valve 1010 is secured to inlet plate 1008 .
  • One-way inlet valve 1010 may be any type of one-way valve such as, for example, a ball and spring, a poppet valve, a flapper valve, an umbrella valve, a slit valve or the like.
  • Pump housing 1002 includes a liquid chamber 1012 .
  • liquid chamber 1012 is cylindrical.
  • a sleeve 1020 Located within liquid chamber 1012 is a sleeve 1020 .
  • Housing 1002 includes an annular projection 1003 at one end of the liquid chamber 1012 .
  • Sleeve 1020 is secured to annular projection 1003 by collar 1023 .
  • Collar 1023 includes an aperture 1025 .
  • Piston 1027 includes a shaft 1030 that projects through aperture 1025 . Piston 1027 is slideable in a reciprocating manner within sleeve 1020 .
  • Piston 1027 includes a double wiper seal 1032 located at one end. Movement of piston 1027 causes the volume of liquid chamber 1012 to expand and contract.
  • Double wiper seal 1032 may be replaced with any type of sealing member such as, for example, an o-ring, a single wiper seal or the like.
  • Housing 1002 includes a projecting member 1034 that contacts an end 1033 of piston 1027 to stop movement of piston 1027 when it reaches the end of its stroke.
  • An inlet passageway 1022 is formed between sleeve 1020 and the wall of liquid chamber 1012 .
  • the inlet passageway 1022 may extend entirely around sleeve 1020 or may be enclosed by one or more rib projections (not shown) that cause liquid in inlet passageway 1022 to flow through passage 1024 into the interior of sleeve 1020 .
  • An outlet passageway 1026 also exists between sleeve 1020 and liquid chamber 1012 .
  • the outlet passageway 1026 may extend entirely around sleeve 1020 or may be enclosed by one or more rib projections that cause liquid to flow through passage 1028 from the interior of sleeve 1020 .
  • Passageway 1022 and passageway 1026 may be a common passageway.
  • Housing 1002 includes valve seat 1037 .
  • Lower housing 1035 may be connected to housing 1002 by any means such as, for example, a threaded connection, a snap-fit connection, a welded connection, an adhesive connection or the like.
  • Lower housing 1035 has an interior cavity 1039 .
  • Lower housing 1035 also includes a first annular projection 1040 that forms an air inlet 1042 .
  • An aperture 1044 connects air inlet to cavity 1039 .
  • Annular projection 1040 may be releasably connected to an air source that is permanently connected to a foam dispenser (not shown).
  • the releasable connection may be made by any means such as, for example, a snap-fit, friction fit, a tube (not shown) that slides over or into annular projection 1040 .
  • Lower housing 1035 also includes a second annular projection 1050 that has a passageway 1052 connecting to cavity 1039 .
  • a compressible chamber such as, for example, air bellows 1054 is connected to annular projection 1050 by any means such as, for example, a friction fit, a snap fit, a welded connection, an adhesive connection or the like.
  • Lower housing 1002 includes a floor 1071 .
  • a tapered section 1072 extends from floor 1071 to annular outlet 1074 .
  • Insert 1073 may be made of one or more components. Insert 1073 includes an interior cavity 1046 formed by annular member 1075 . Interior cavity 1046 retains one-way outlet valve 1036 and biasing member 1038 . One-way outlet valve seals against valve seat 1037 .
  • One-way outlet valve 1036 may be any type of one-way valve such as, for example, a ball and spring valve, a poppet valve, a flap valve, an umbrella valve, a slit valve or the like.
  • insert 1073 contains a sanitary seal 1060 .
  • Sanitary seal 1060 is a flexible member that forms a one-way valve that allows air to enter from passageway 1042 and into the upper portion of cavity 1039 but prevents liquid or foam from flowing back into passageway 1042 .
  • sanitary valve 1060 is integrally formed with insert 1073 .
  • Sanitary valve 1060 is a sanitary valve because it prevents liquid and foam from traveling into components of the foam dispenser that are not discarded with the refill unit that includes pump 1000 .
  • Insert 1073 includes foaming media 1070 secured therein.
  • Foaming media 1070 may be one or more screens, porous members, baffles, a sponge, a foaming cartridge, or the like.
  • Foaming media 1070 may be an integral part with insert 1073 or may be a separate part.
  • the liquid piston 1027 may moved along a pump axis that is substantially horizontal.
  • the liquid inlet valve 1010 moves along an axis that is substantially normal to the pump axis.
  • a portion of the liquid inlet valve 1010 moves along a substantial vertical axis, such as the inlet valve 1010 illustrated in FIGS. 10 and 11 , which may collapse both horizontally and vertically.
  • pump 1000 has been described as being made of selected sub-parts, pump 1000 , as well as the other embodiments of pumps disclosed herein, may be made from more sub-parts or fewer sub-parts.
  • FIG. 10 illustrates pump 1000 in a fully discharged position.
  • FIG. 11 illustrates pump 1000 in a charged or primed state.
  • piston 1027 of pump 1000 moves from the discharged position illustrated in FIG. 10 to the charged or primed state illustrated in FIG. 11 .
  • liquid flows in through liquid inlets 1009 into liquid chamber 1012 and through passageways 1022 , 1024 into the interior of sleeve 1020 .
  • bellows 1054 moves from a contracted position to an expanded position. Movement of bellows 1054 to an expanded position draws air in through the outlet 1074 and sucks back any residual fluid and foam to prevent fluid from leaking out of the outlet 1074 after the dispense cycle.
  • Movement of piston 1074 from the charged position illustrated in FIG. 11 to the discharged position illustrated in FIG. 10 causes fluid to flow out of the liquid chamber 1012 (including the center of the sleeve 1020 ) through passageways 1028 , 1026 past liquid outlet valve 1036 into mixing chamber 1046 .
  • bellows 1054 is collapsed forcing any liquid drawn in during the “suck back” operation into cavity 1039 .
  • air from an air source flows through air passage 1042 , through aperture 1044 , past sanitary valve 1060 , up around the top of member 1075 and into mixing chamber 1046 where it mixes with the incoming liquid.
  • the air and liquid mixture is forced through aperture 1062 and through foam media 1070 to create a rich foam.
  • the rich foam travels through tapered section 1072 where it accelerates due to the reduced volume and exits foam pump 1000 through outlet 1074 .
  • Housing 1202 includes an aperture 1204 through the housing 1202 into pump chamber 1220 .
  • one or more liquid inlet apertures 1208 are included through housing 1202 .
  • a one-way check valve 1206 allows fluid to enter pump chamber 1220 from a container (not shown) and prevents fluid from exiting pump chamber 1220 and flowing back into the container.
  • One-way check valve 1206 includes a stem 1207 .
  • Stem 1207 has a projecting member 1209 located at one end. Projecting member 1209 may be a spherical projection as shown, or may be a projection with a lower profile. Projection 1209 is pushed through aperture 1204 and expands once it passes through the aperture 1204 to retain one-way valve 1206 in place.
  • a second projecting member 1210 is also located along the stem 1207 .
  • Second projecting member 1210 contacts a surface of housing 1202 and also helps to keep one-way valve 1206 in place.
  • One-way valve 1206 includes sealing member 1211 .
  • Sealing member 1211 has a conical shape and is resilient.
  • one-way valve 1206 is formed of a unitary resilient piece.
  • sealing member 1211 is configured to deflect to allow liquid under pressure to pass from a container into the pump chamber 1220 .
  • sealing member 1211 contacts surface 1205 of annular projection 1203 and forms a seal preventing liquid from flowing from pump chamber 1220 past sealing member 1211 .
  • a unique feature about one-way liquid inlet valve 1206 is that one-way liquid inlet valve 1206 may be secured to pump housing 1202 from outside of the pump. Current liquid inlet valves are connected to the pump housing from the inside the pump housing.
  • the arrangement shown and described herein of having the sealing member 1211 of the one-way liquid inlet valve located above the liquid inlet apertures 1208 and outside of the pump chamber 1220 is advantageous in that the portion of one-way valve 1206 located inside of the pump chamber 1220 may be reduced.
  • Sleeve 1230 Located at least partially within pump chamber 1220 is a sleeve 1230 .
  • Sleeve 1230 fits within pump chamber 1220 and creates one or more passageways between the outside wall of the sleeve 1230 and one or more walls of the pump chamber 1220 .
  • the passageways may be similar to those described with respect to the pumps disclosed in FIGS. 3 , 4 , 10 and 11 .
  • Sleeve 1230 is secured to housing 1202 by a collar or end cap 1231 .
  • Collar 1231 may be press-fit into housing 1202 , secured with an adhesive, connected by a threaded connection, or the like.
  • Housing 1202 includes a cavity 1270 .
  • a portion of cavity 1270 forms mixing chamber 1214 .
  • An air inlet 1212 is located in a side wall of the cavity 1270 .
  • An annular projection 1262 extends outward and surrounds air inlet 1212 .
  • Annular projection 1262 forms a means for connecting pump 1200 with an air source (not shown) for providing air to pump 1200 to mix with the liquid to form a foam.
  • the air source may be an air compressor permanently attached to the pump 1200 or may be an air source that is releasably connected to pump 1200 .
  • the air source may be a positive displacement air pump, a bellows pump, a piston pump, a fan, an air compressor, or the like.
  • Dual action valve 1240 Located within cavity 1270 is dual action valve 1240 .
  • Dual action valve 1240 has a first wiper seal 1242 and a second wiper seal 1244 , both of which are flexible.
  • the first and second wiper seals 1242 , 1244 also form part of the mixing chamber 1214 , which is located between them.
  • First wiper seal 1242 is a one-way liquid inlet valve which allows liquid under pressure to enter mixing chamber 1214 .
  • Second wiper seal 1244 is a one-way air inlet valve that allows air to enter mixing chamber 1214 and prevents liquid or air from traveling from the mixing chamber 1214 back toward the air source (not shown).
  • Dual action valve 1240 includes an internal passage 1241 .
  • a foaming cartridge 1250 fits within the flared portion 1245 of dual action valve 1240 .
  • foaming cartridge 1250 includes screens 1252 . Screens 1252 may be individually secured in the flared portion 1245 without being connected to a cartridge.
  • foaming cartridge 1250 may simply be a porous member or a series of baffles.
  • the volume of pump chamber 1220 is reduced.
  • the pressure created by the contracting pump chamber 1220 forces one-way liquid inlet valve 1206 to close by sealing off against surface 1205 .
  • Liquid travels past wiper seal 1242 into mixing chamber 1214 .
  • Air travels from an air source (not shown) that connects to member 1262 through aperture 1212 into cavity 1270 past wiper seal 1244 and into mixing chamber 1214 where the air mixes with the liquid to form an air/liquid mixture.
  • the liquid and air may simultaneously enter mixing chamber 1214 .
  • the timing may be slightly offset, wherein liquid starts entering the chamber slightly prior to the air, or in one embodiment, the liquid enters mixing chamber prior to the air entering the mixing chamber.
  • the liquid/air mixture is forced by the air pressure through aperture 1246 into passage 1241 , through foaming cartridge 1250 and is dispensed out of outlet nozzle 1256 as a foam.
  • the air compressors and liquid pumps described herein may include biasing members to return them to a first state, or a charged state.
  • a biasing member in one or more of the air compressors or liquid pumps may return other air compressors and/or liquid pumps to a first state.
  • a biasing member in the actuator mechanism returns the air compressor and/or liquid pumps to a first state. Still yet, if the air compressor and or liquid pump are electrically operated, they may be moved to the first state electrically.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)
  • Nozzles (AREA)
US13/792,034 2012-08-23 2013-03-09 Horizontal pumps, refill units and foam dispensers with integral air compressors Abandoned US20140054323A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US13/792,034 US20140054323A1 (en) 2012-08-23 2013-03-09 Horizontal pumps, refill units and foam dispensers with integral air compressors
EP19151234.2A EP3488937B1 (en) 2012-08-23 2013-08-22 Horizontal pumps, refill units and foam dispensers with integral air compressors
PCT/US2013/056106 WO2014031814A1 (en) 2012-08-23 2013-08-22 Horizontal pumps, refill units and foam dispensers with integral air compressors
AU2013305789A AU2013305789A1 (en) 2012-08-23 2013-08-22 Horizontal pumps, refill units and foam dispensers with integral air compressors
BR112015003842A BR112015003842A2 (pt) 2012-08-23 2013-08-22 unidade de refil descartável
CN201380055500.9A CN104736251A (zh) 2012-08-23 2013-08-22 卧式泵、再充注单元和具有整体式空气压缩机的泡沫分配器
JP2015528643A JP2015533528A (ja) 2012-08-23 2013-08-22 水平ポンプ、再充てんユニット及び空気コンプレッサー一体の泡ディスペンサー
MX2015002377A MX2015002377A (es) 2012-08-23 2013-08-22 Bombas horizontales, unidades de reabastecimiento y dispensadores de espuma con compresores de aire integrales.
EP13763128.9A EP2888056B1 (en) 2012-08-23 2013-08-22 Horizontal pumps, refill units and foam dispensers with integral air compressors
CA2882714A CA2882714A1 (en) 2012-08-23 2013-08-22 Horizontal pumps, refill units and foam dispensers with integral air compressors
TW102130032A TW201429859A (zh) 2012-08-23 2013-08-22 水平泵、再塡充單元、及具有整合空氣壓縮器之泡沫施配器
SA515360055A SA515360055B1 (ar) 2012-08-23 2015-02-22 مضخات أفقية، وحدات إعادة ملء وموزعات الرغوة بضواغط هواء متكاملة
US14/797,728 US9854947B2 (en) 2012-08-23 2015-07-13 Horizontal pumps, refill units and foam dispensers with integral air compressors

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US201261692290P 2012-08-23 2012-08-23
US13/792,034 US20140054323A1 (en) 2012-08-23 2013-03-09 Horizontal pumps, refill units and foam dispensers with integral air compressors

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JP (1) JP2015533528A (enrdf_load_stackoverflow)
CN (1) CN104736251A (enrdf_load_stackoverflow)
AU (1) AU2013305789A1 (enrdf_load_stackoverflow)
BR (1) BR112015003842A2 (enrdf_load_stackoverflow)
CA (1) CA2882714A1 (enrdf_load_stackoverflow)
MX (1) MX2015002377A (enrdf_load_stackoverflow)
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EP3488937A1 (en) 2019-05-29
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BR112015003842A2 (pt) 2017-08-08
WO2014031814A1 (en) 2014-02-27
CA2882714A1 (en) 2014-02-27
CN104736251A (zh) 2015-06-24
TW201429859A (zh) 2014-08-01
US20150313423A1 (en) 2015-11-05
US9854947B2 (en) 2018-01-02
MX2015002377A (es) 2015-09-25

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