EP0441377B1 - Manuell betätigbarer Flüssigkeitszerstäuber - Google Patents

Manuell betätigbarer Flüssigkeitszerstäuber Download PDF

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Publication number
EP0441377B1
EP0441377B1 EP91101690A EP91101690A EP0441377B1 EP 0441377 B1 EP0441377 B1 EP 0441377B1 EP 91101690 A EP91101690 A EP 91101690A EP 91101690 A EP91101690 A EP 91101690A EP 0441377 B1 EP0441377 B1 EP 0441377B1
Authority
EP
European Patent Office
Prior art keywords
housing
pump
pressure regulator
closing element
orifice
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.)
Expired - Lifetime
Application number
EP91101690A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0441377A3 (en
EP0441377A2 (de
Inventor
Karl Kläger
Karl-Heinz Kläger
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.)
KLAEGER, KARL
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0441377A2 publication Critical patent/EP0441377A2/de
Publication of EP0441377A3 publication Critical patent/EP0441377A3/de
Application granted granted Critical
Publication of EP0441377B1 publication Critical patent/EP0441377B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke

Definitions

  • the invention relates to a manually operable liquid atomizer according to the type specified by the preamble of claim 1.
  • the two ring seals of the piston of the piston pump are so closely spaced apart that the mouth of the ventilation line lying in their annular space is already out of its rest position after a relatively short displacement of the piston connects to the atmosphere through the open end of the pump cylinder.
  • the connection is made via an annular space that exists between the main length of the pump piston sealed by the two ring seals against the pump chamber and the surrounding pump cylinder, so that the ventilation of the reservoir during the displacement of the pump piston caused by the handle lever against the force of the return spring is constant is mediated through this annular space.
  • the axial guidance of the pump piston on the surrounding wall of the pump cylinder is thus essentially limited only to the remaining length, which is relatively short with the two ring seals, at the piston end facing the pump chamber, so that this causes a rather unstable displacement of the piston, which tends to tilt, with a corresponding disadvantageous effect Impact on the operation of the piston pump is obtained.
  • This disadvantageous effect is particularly noticeable when the ring seals are formed as one-piece lip seals with the piston, because then such tilting movements also lead to faster wear on the relatively thin lips of the seals.
  • a liquid atomizer in which the distance between two integrally formed lip seals of the piston of a corresponding piston pump is dimensioned such that a ventilation hole designed for ventilation of the reservoir in the wall of the pump cylinder is in the rest position as well also lies in the maximum displacement position of the pump piston obtained with a limit stop in the annular space between the two lip seals.
  • a partial coverage of the inlet suction line opening into the pump chamber is obtained, so that a valve chamber upstream of the pump chamber then also has a connection to the other lip seal against the open end of the pump cylinder has sealed ventilation hole.
  • the annular space between the two ring seals is connected to the atmosphere at the same time via a ventilation groove formed in the wall of the pump cylinder in an axially parallel manner, this connection being different from that in the rest position of the pump piston, the open end of the pump cylinder sealing lip seal is released during the movement of the pump piston. With this liquid atomizer there is therefore a risk of leakage leakage through the open end of the pump cylinder.
  • the invention characterized by the claims solves the problem of designing a manually operable liquid atomizer of the type specified in such a way that greater security for leakage leakage is obtained via the open end of the pump cylinder.
  • the liquid atomizer shown in its entirety in FIG. 1 represents a further development of the atomizer according to DE-C-32 45 493, the individual parts of which are partly adopted unchanged and partly undergo an uncomplicated adaptation to the design according to the invention.
  • the use of an atomizer nozzle is provided, which, with a design according to DE-C-34 43 640, results in simple mounting on the atomizer housing.
  • the atomizer is provided for screwing to a storage container containing the liquid to be atomized by means of a union nut 2 which is freely rotatable by the atomizer housing 1.
  • a handle lever 3 is pivotally mounted on the atomizer housing 1 and bears with a projection 4 on the piston 6 of a piston pump, which piston is biased by a return spring 5.
  • the pump piston 6 can thus be displaced by the handle lever 3 against the force of the return spring 5 in a pump chamber 7 formed with the atomizer housing 1, which is sealed against an open end of the pump cylinder 10 by a piston seal designed with two lip seals 8 and 9.
  • a connection bore 11 opens with a valve chamber 12, to which a connecting line 14 leading to the reservoir is connected via an inlet check valve 13 formed with a valve ball.
  • the connecting line 14 thus forming a partial length of an inlet-suction line opening into the pump chamber 7 passes through a closure piece 15 of the storage container which can be fixed by the union nut 2, the closure piece being cylindrical overall and engaging behind a central push-through opening of the union nut with a radially projecting ring flange 16 which thus supports the union nut so that it can rotate freely.
  • an outlet pressure line 17 extends from the pump chamber 7, at the mouth of which the atomizing nozzle 18 is arranged.
  • the handle lever 3 is formed with an essentially U-shaped bearing fork 19, which has a pivot pin formed as a double pin 20, 21 at each of the two fork ends.
  • Each pivot is inserted into two axially aligned bearing bores 22 and 23 of an outer housing wall 24 and a spaced inner housing wall 25, which are thus arranged in pairs on both sides of the outlet pressure line 17 formed with the atomizer housing 1.
  • This paired arrangement is designed according to the sectional view in FIG.
  • the valve chamber 12 is formed within a hollow cylindrical housing extension 26, which is provided for a plug connection with the closure piece 15 of the storage container.
  • the housing extension 26 is surrounded by a coaxially formed second housing extension 27 with the formation of an intermediate space 28 which is dimensioned such that when a housing extension 26 is plugged onto the closure piece 15 a plug connection with an axially projecting ring flange 29 of the closure piece is obtained at the same time.
  • the plug connection provided for the ring flange 29 of the closure piece 15 is supplemented by a snap connection with the second housing attachment 27, which is formed with a catch lug 30 of the ring flange 29 and a catch hole 31 of the second housing attachment 27.
  • the snap connection primarily serves the purpose of keeping the union nut 2 freely rotatable on the closure piece in the interaction of the second housing extension 27 and the radially projecting ring flange 16 of the closure piece 15, for which purpose the central push-through opening of the union nut has a somewhat larger diameter than the axially projecting ring flange 29 having.
  • an axially parallel longitudinal groove 32 is formed, which is sealed with a press fit of the ring flange against the housing shoulder 26.
  • the longitudinal groove 32 forms a partial length of a ventilation line which, via a prechamber formed with the intermediate space 28 between the two housing attachments 26 and 27 and a ventilation bore 33 in the wall of the pump cylinder 10, connects to the annular intermediate space 34 between the two lip seals 8 and 9 of the pump piston 6 connected.
  • the longitudinal groove 32 has a connection to a bore 35 of the closure piece 15, via which a connection to the storage container can thus be established.
  • a labyrinth seal 36 with the mutual contact surfaces of the second housing extension 27 and the ring flange 29 is also formed, which press-fits the Ring flange 29 is radially preloaded with respect to the press fit supplementing a housing extension 26.
  • the intermediate space 34 formed between the two lip seals 8, 9 of the pump piston 6 is sealed in the rest position of the piston by the one lip seal 9 against the open end of the pump cylinder 10.
  • a seal against the pump chamber 7 is obtained with the other lip seal 8.
  • This double-sided seal also exists with respect to a ventilation groove 37, which is formed axially parallel with a length smaller than the distance between the two lip seals in the wall of the pump cylinder 10 and, according to the detail shown in FIG. 4, has a diffuser-like widening end 38, which with reference to the illustration in FIG. 3 on one to the ventilation hole 33 diametrically opposite point in the wall of the pump cylinder 10 is formed.
  • the other lip seal 8 maintains an unchanged seal of the intermediate space 34 and thus at the same time the ventilation hole 33 against the pump chamber 7, which on the other hand has a connection with the valve chamber 12 that is constantly maintained via the bore 11.
  • the outlet pressure line 17 is thus also continuously connected to the valve chamber 12 via the pump chamber 7.
  • an O-ring can also be provided for the sealing on these contact surfaces.
  • the lip seals 8, 9 of the pump piston 6 can also be replaced by such separate O-rings.
  • a rib can also be formed on the wall of the pump cylinder 10 in order to maintain the connection to the atmosphere outside the rest position of the pump piston.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP91101690A 1990-02-09 1991-02-07 Manuell betätigbarer Flüssigkeitszerstäuber Expired - Lifetime EP0441377B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9001517U DE9001517U1 (de) 1990-02-09 1990-02-09 Manuell betätigbarer Flüssigkeitszerstäuber
DE4004024A DE4004024A1 (de) 1990-02-09 1990-02-09 Manuell betaetigbarer fluessigkeitszerstaeuber
DE4004024 1990-02-09

Publications (3)

Publication Number Publication Date
EP0441377A2 EP0441377A2 (de) 1991-08-14
EP0441377A3 EP0441377A3 (en) 1992-02-26
EP0441377B1 true EP0441377B1 (de) 1994-12-07

Family

ID=25889941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101690A Expired - Lifetime EP0441377B1 (de) 1990-02-09 1991-02-07 Manuell betätigbarer Flüssigkeitszerstäuber

Country Status (2)

Country Link
EP (1) EP0441377B1 (no)
DE (3) DE4004024A1 (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711554B1 (fr) * 1993-10-22 1995-12-22 Oreal Ensemble de distribution à reprise d'air commandée.
DE19511885A1 (de) * 1995-03-31 1996-10-02 Bayer Ag Vorrichtung zum Ausbringen von Pflanzenschutzmitteln
US5779108A (en) * 1995-06-15 1998-07-14 Calmar Inc. Pressure venting trigger sprayer
FR2810301B1 (fr) * 2000-06-16 2002-09-13 Rexam Sofab Dispositif de reprise d'air statique pour distributeur de produit liquide

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55373Y2 (no) * 1974-09-26 1980-01-08
JPS6032505B2 (ja) * 1979-03-19 1985-07-29 株式会社吉野工業所 液体噴霧器
US4402432A (en) * 1980-02-13 1983-09-06 Corsette Douglas Frank Leak-proof dispensing pump
JPS5756066A (en) * 1980-09-22 1982-04-03 Yoshino Kogyosho Co Ltd Spray
US4365751A (en) * 1980-09-26 1982-12-28 Yoshino Kogyosho Co., Ltd. Trigger type liquid injector
US4819835A (en) * 1986-07-21 1989-04-11 Yoshino Kogyosho Co., Ltd. Trigger type liquid dispenser
US4747523A (en) * 1987-06-19 1988-05-31 Calmar, Inc. Manually actuated dispensing pump

Also Published As

Publication number Publication date
DE4004024A1 (de) 1991-08-14
EP0441377A3 (en) 1992-02-26
DE9001517U1 (de) 1990-04-12
DE4004024C2 (no) 1993-07-29
DE59103730D1 (de) 1995-01-19
EP0441377A2 (de) 1991-08-14

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