Classifications

• • 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
• • 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
• • 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
  • B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
• • 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
  • B05B7/0031—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 with disturbing means promoting mixing, e.g. balls, crowns
  • B05B7/0037—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 with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like

Definitions

• the present invention relates to a method for display and an apparatus according to the preamble of claim 1 and claim 4.
• foam dispensers are often used in washrooms and toilets, in particular in public facilities, restaurants etc. They are also found in areas with high hygiene requirements such as the food industry, healthcare, etc., where they are often operated with soap solutions that contain disinfectants.
• a concentric foam dispenser is known from WO 90/14037, FIG. 4, which sucks in air from the dispenser housing via a non-return valve, compresses it and at the same time requests soap solution from an intermediate container. Both media are brought together in a mixing room; The coarse-bubble foam formed there is then homogenized using a foamer and ejected for washing hands.
• the known device is relatively voluminous and consists of numerous individual parts that are contaminated over time and stick and / or contaminate the dispenser. In addition, it tends to drip, since the remaining foam in the mixing room and in the dispenser partly disintegrates and partly sticks, especially during long breaks in operation.
• the dispenser to be created should be reliable and create improved hygienic conditions. It should have a large intermediate container with a clearly visible level indicator so that there is always enough time to replace the empty storage bottle with a new, filled one. In addition, the donor should be economical to manufacture and require a minimum of maintenance.
• the dispensing nozzle in the first phase, after the foam formation and dispensing, the dispensing nozzle is blown free; in the second phase, a slight negative pressure is created there, which destroys the remaining foam.
• the liquid lamellae forming the foam expand due to the rucksack (negative pressure) and are broken due to their thermodynamic instability on the inner surface of a nozzle / expansion body, i.e. a minimal amount of soap solution is created here, which is foamed and expelled again with the next positive piston stroke (with the foam portion).
• the method of claim 2 can be very easily integrated into existing air cylinder designs.
• the device according to claim 5 has the advantage of a very hygienic and reliable construction.
• Passing over a single air outlet shown in claim 6 is particularly efficient and replaces the valves, air switches, air guides, stepped piston rods for temporary air supply, which are necessary in other conceivable designs.
• the embodiment according to claim 7 is particularly effective.
• the embodiment according to claim 8 prevents the penetration of germs etc. in the dispenser and ensures a decisive improvement in the hygienic conditions.
• the configuration according to claim 9 serves to avoid confusion of the storage containers; it increases operational safety and serves to ensure the use of suitable soap solutions, especially in critical areas Chen (food production and distribution, healthcare, etc.).
• the invention tert embodiments Erlau the example of a ge with soap solution ⁇ fed dispenser.
• FIG. 1 is a partial view of a foam dispenser in perspective
• FIG. 2a shows the float of a level indicator shown in FIG. 2,
• FIG. 3 shows a sectional view of the dispenser according to FIG. 1,
• Fig. 4 shows a foamer according to Fig. 3 in a so-called. Exploded view with associated nozzle
• FIG. 5 shows a vertical section through the foamer according to FIG. 4,
• FIG. 6 is a central plan view of the foamer according to FIG. 5,
• 7a shows the basic diagram of an air cylinder with an air piston in three characteristic stroke positions
• 7b shows the typical pressure curve at a radial air passage of the air cylinder FIG. 7a
• Fig. 7c is a sectional view through a lower half of an air cylinder with a connected nozzle / expansion body and
• Fig. 8 the Dusen- / Expans ⁇ ons body m a top view from above.
• FIG. 1 denotes a foam dispenser shown in sections, which is supplied with a soap dispenser arranged overhead.
• the storage bottle 2 symbolized by an arrow, is inserted into an adapter 8 with a central piercing sleeve 9 and a coding edge 10, which are embedded on a closure cover 7 of an intermediate container 6 designed in the manner of a bird's vine.
• On the cover 7 there are also clamping and locking pieces 11, which match corresponding profiles m side walls 34 on a rear wall 30 and allow easy assembly and disassembly of the functionally essential parts of the dispenser 1.
• a vertical, protruding, transparent part 19 can be seen on the end face of the intermediate container 6, with a float 22 with a flag 22 ′ which forms a full level indicator.
• a soap metering cylinder 83 and an air cylinder 82 are arranged underneath, the latter being supplied by an air release valve 90 (not shown).
• a delivery bore 80 for Be ⁇ fenschaum and a Dusen / Expans ⁇ ons-body 74 to be seen.
• Curved grooves 35 are embedded in the side cheeks 34, into which pins of a lever 24 projecting from flanges 36 engage, which is provided on its lower side with an actuating ring 23. The actuating lever 24 is pressed into the position shown by spring wires 60 lying opposite each other and bent twice.
• the direction of movement of the ring 23 is denoted by + and -, the + direction corresponding to the forward stroke (effective stroke) and the negative direction (-) corresponding to the backward stroke of the piston rod designated 43.
• the air cylinder 82 is provided with a pump support 13 which is latched onto the side cheeks 34; Likewise, 6 side guides 12 are embedded in the intermediate container, which serve for precise positioning.
• a film hinge which serves to connect the rear wall 30 to a hinged hood 20, see FIG. 2.
• the view according to FIG. 2 shows the outer shape of the hood 20 and thus of the entire device house, with a viewing window 21 on the front for the full level display being left free.
• the float 22 is shown completely in Fig. 2a.
• the flag 22 protrudes from a float body 25 while 25 guide profiles 26 are arranged on both sides of the body with grooves.
• FIGS. 1 to 2 Further details of the dispenser FIGS. 1 to 2 can be found in the sectional illustration in FIG. 3.
• a bottle neck 3 has a liquid-tight part 4 which characterizes and codes the bottle.
• a pierced membrane 52 which serves as a bottle cap, can be seen. The piercing occurs when the container 2 is inserted through the piercing sleeve 9 in the adapter 8, the shape of which is adapted to the coding part 4.
• the sealing plug 50 is provided in one piece via a spring leaf 48 with two mounting pins 49 lying opposite one another and inserted in the sealing cover 7.
• the soap solution can pass through a soap passage 69 and a through pin 84 to a floating check valve 44 which is arranged on the top side of the soap metering cylinder 83.
• a floating check valve 44 On the opposite side there is a further check valve 44 ' a valve spring 45 is pressed against its upper valve seat.
• a Verscherer 73 can be seen, which is completed by a nozzle / expansion body 74 and is provided with an obliquely angled discharge bore 80.
• an axially displaceable air piston 42 can be seen, which is integrally formed with the piston rod 43 and an end-side soap solution piston 40. Furthermore, two bores can be seen in the air cylinder 82, the radial one being an air passage 89 to the nozzle / expansion body 74 and the axial one being an air passage 91 to the foamer 73.
• the rear end of the piston rod 43 is inserted between two side guides 54 and has a bearing pin 39 which is laterally engaged in a pressure cam 38.
• the piston rod 43 m + and - direction (see FIG. 1) with the actuating lever 24 is guided horizontally; wherein the front end position of the He ⁇ is bels 24 indicated by a chain line.
• the front spring 60 on the observer side can be seen, which causes the lever 24 to return to its rear end position in the manner of a leaf spring.
• FIG. 4 shows the individual ⁇ are m vergrosserter representation of parts of the Verschaumers and the training of the Dusen / Ex- pansions-body 74 to be seen.
• a valve ball 70, a stopper 71 with a central passage, and a pipe piece 72, which serves to guide the spring 45 can be seen.
• a foam divider 86 can be seen in the lower part of the foamer 73, but still arranged in this. Further individual parts of the foamer 73 can be found in the enlarged representations of FIGS. 5 and 6.
• a pre-foam chamber 87 designed as a room surface, which can be supplied with compressed air by the channels 88 serving for air guidance; 3, the metered soap solution is fed to a jacket space 92 from above.
• the foaming principle is notoriously known as such, as is the membrane sieve 85 at the lower end of the foamer 73, which serves for refinement and homogenization, and the foam dividers 86.
• the plan view of the foamer 73 shows m FIG. 6 noto ⁇ driven known Schaumdusen through which from the top through the Heilbuch für 88, the compressed air pushes the foam formed in the Vorschaumhunt 87 therethrough.
• the air cylinder 82 which is shown schematically in FIG. 7a, shows how it works:
• a forward stroke H w serving to foam the soap solution is effective as soon as it is passed over by the air piston 42 via the radial air passage 89; it builds up on the stroke H of the pressure curve p drawn in FIG. 7b, up to a maximum value of the effective pressure Pw.
• This effective pressure P w is delivered to the connected foamer via the axial air passage 91.
• Expansion body 74 is first blown out through the bore 80, and that there is then a back suction.
• FIG. 7c A preferred embodiment of an air cylinder 82 with foamer 73 and nozzle / expansion body 74 is shown half-sided in FIG. 7c.
• FIG. 7c In contrast to the embodiment according to FIG. 3, only a single air passage 89 is provided in FIG. 7c.
• the variant according to FIG. 3 has channels 93, which are also connected to the nozzle / expansion body 74 are.
• FIG. 7c the only air passage 89 is designed analogously to FIG. 7a; the backward stroke H B and the further backward stroke H s are also entered.
• the backpack suction device which is characterized by arrows, is designated by -p.
• the air flow passes through the air passage 89 via the upper expansion space 94 onto the impact head 76 and foams again in the drip chamber 75; subsequently, due to the longer path and the lower pressure, it is expelled through the bore 80 approximately simultaneously with the foam generated by the active stroke H w .
• the subject matter of the invention can be further optimized by the freely selectable, more constant lifting speeds present in the case of electromechanically driven dispensers and there shows an additional effect when sucking back.

Landscapes

• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
• Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Detergent Compositions (AREA)
• Closures For Containers (AREA)
• Nozzles (AREA)

Priority Applications (2)

Applications Claiming Priority (4)

Publications (2)

Family

ID=8174527

Family Applications (2)

Family Applications Before (1)

Country Status (9)

Cited By (1)

Families Citing this family (53)

Family Cites Families (9)

• 2000
  • 2000-01-19 EP EP00810042A patent/EP1118389A1/fr not_active Withdrawn
• 2001
  • 2001-01-16 PT PT01900075T patent/PT1248682E/pt unknown
  • 2001-01-16 ES ES01900075T patent/ES2241774T3/es not_active Expired - Lifetime
  • 2001-01-16 WO PCT/CH2001/000028 patent/WO2001053002A1/fr active IP Right Grant
  • 2001-01-16 AT AT01900075T patent/ATE296168T1/de active
  • 2001-01-16 US US10/181,532 patent/US6626332B2/en not_active Expired - Lifetime
  • 2001-01-16 EP EP01900075A patent/EP1248682B1/fr not_active Expired - Lifetime
  • 2001-01-16 DE DE50106308T patent/DE50106308D1/de not_active Expired - Lifetime
  • 2001-01-16 DK DK01900075T patent/DK1248682T3/da active
  • 2001-01-16 AU AU23390/01A patent/AU2339001A/en not_active Abandoned

Non-Patent Citations (1)

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