EP0346167A1 - Zerstäubungspumpe, die einen Vordruck vor der Zerstäubung erzeugt - Google Patents

Zerstäubungspumpe, die einen Vordruck vor der Zerstäubung erzeugt Download PDF

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Publication number
EP0346167A1
EP0346167A1 EP89401284A EP89401284A EP0346167A1 EP 0346167 A1 EP0346167 A1 EP 0346167A1 EP 89401284 A EP89401284 A EP 89401284A EP 89401284 A EP89401284 A EP 89401284A EP 0346167 A1 EP0346167 A1 EP 0346167A1
Authority
EP
European Patent Office
Prior art keywords
piston
chamber
movable member
pump
liquid
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.)
Granted
Application number
EP89401284A
Other languages
English (en)
French (fr)
Other versions
EP0346167B1 (de
Inventor
André Debard
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.)
Lindal Verpackungstechnik GmbH and Co KG
Original Assignee
Lindal Verpackungstechnik GmbH and Co KG
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 Lindal Verpackungstechnik GmbH and Co KG filed Critical Lindal Verpackungstechnik GmbH and Co KG
Publication of EP0346167A1 publication Critical patent/EP0346167A1/de
Application granted granted Critical
Publication of EP0346167B1 publication Critical patent/EP0346167B1/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
    • B05B11/1088—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 the pump being a double-acting pump

Definitions

  • the present invention relates to diffusion pumps such as so-called aerosol pumps, which are used to extract a determined quantity of a liquid contained in a reservoir bottle and expel it outside via a head diffusion, generally equipped with a vortex nozzle.
  • diffusion pumps such as so-called aerosol pumps, which are used to extract a determined quantity of a liquid contained in a reservoir bottle and expel it outside via a head diffusion, generally equipped with a vortex nozzle.
  • aerosol pumps such as so-called aerosol pumps, which are used to extract a determined quantity of a liquid contained in a reservoir bottle and expel it outside via a head diffusion, generally equipped with a vortex nozzle.
  • aerosol pumps relates more particularly to those whose operation ensures a prior compression of the dose of liquid withdrawn before expelling it outside.
  • Pumps of this type comprise, in a known manner, a compression chamber formed inside a pump body between a shut-off valve of an orifice for withdrawing the liquid in the reservoir bottle and an orifice for expelling the withdrawn liquid. towards the diffusion head, this chamber being of variable volume by the fact that it is limited by a piston carried by a member movable axially in the pump body. This member is linked to the diffusion head so that a pressure exerted manually on the latter by the user against elastic return means makes it possible to control the operation of the pump.
  • the invention responds to the need which has been felt to improve the operation of such pumps, in particular to ensure a frank projection of the liquid during diffusion, in a predetermined dose, to avoid smearing or drips at the end of projection or in outside periods of use, and to allow a simple and solid construction, guaranteeing a good functioning for a long use.
  • the invention achieves this by using a provision ensuring a precompression effect and involving two chambers, one of which is a compression chamber with variable volume, internal to the mobile organ, and the other of which is external to it; it ensures communication with the expulsion orifice located at the end of the movable member by longitudinal channels formed annularly therein.
  • a needle piston is mounted inside the movable member, but outside the internal chamber, in such a way that it comes to close the expulsion orifice when there is no longer any liquid pressure. in the external chamber containing the communication channels.
  • This needle piston or precompression piston also plays the role of a sniffing piston, avoiding sagging at the very start of the projection, by the fact that it is stressed by elastic means associated in a position for closing the 'expulsion orifice from which it is released when the liquid is pressurized in the external or intermediate chamber.
  • the invention advantageously involves a secondary characteristic of this pump which makes it pass from a single-effect operation to a double-effect operation.
  • a sliding piston disposed inside the internal chamber of the main piston, or driving piston, is pushed by elastic means into a position where it closes the communication between the internal chamber and the external chamber, d '' where it is released only under the effect of liquid pressure in the internal chamber.
  • a first part of the dose of liquid withdrawn is expelled via the external chamber when the piston is lowered in the direction of compression in the internal chamber, while the rest of this dose is expelled during the ascent of the engine piston subjected to the associated elastic means.
  • the various elastic means are generally helical metal springs, except however that the sliding piston of the double-acting pump is preferably brought back to its closed position by lugs made of elastic material molded with a transverse partition internal to the movable member which limits the internal chamber and on which rests on the other hand, on the opposite face of the partition, the spring associated with the needle piston.
  • the double-acting pump according to the invention in the particular embodiment considered, is represented in FIGS. 1 to 3 in different positions of its constituent elements, while keeping the same reference numbers. It has an axis of symmetry of revolution, which is assumed to be oriented vertically, as is normally the case when the pump is in use for withdrawing and diffusing a liquid contained in a bottle of which only the cover 1 has been shown. .
  • This pump comprises a mobile assembly which moves axially inside a fixed pump body, mounted inside the bottle.
  • This pump body consists of a shell 2, internally lined with a sheath 3 in its upper part.
  • the mobile assembly essentially comprises a cylindrical member 10, in two parts integral with each other, namely an internal tube 5 and an external tube 4, covering the upper end of the internal tube 4.
  • the lid 1 of the bottle forms a cylindrical cup 6, which is traversed by the movable member 10 and which has an internal shoulder 7 under which the pump body is mounted, by snap-fastening of the upper end of the shell 2 behind beads 8 of the cover 1. An air leak is however possible between these beads, to ensure pressure balancing with the bottle in view of which the upper end of the sheath 3 has teeth 9, in abutment on the shoulder 7 of the cup 6, beyond from the end face of the upper end of the shell 2.
  • a diffusion head 11 is mounted on the mobile assembly, by force engagement on the upper end of the external tube 4, in abutment on an external shoulder 12 that the latter presents for this purpose. This allows the user to control the operation of the pump. When it exerts a manual pressure on it downwards, it pushes the mobile assembly by making it descend against the elastic return force of a helical spring 13 which will be discussed again below.
  • the diffusion head 11 also comprises a diffusion nozzle 14, of the vortex type, which opens laterally through a cylindrical skirt 15 externally limiting the head 11 and which communicates through the head 11 with the internal space of the movable member 10, the tube 4 axially forming an orifice 16 used for expelling the liquid withdrawn from the bottle by the pump.
  • This sampling is carried out by the lower part of the fixed body of the pump, where the shell 2 is extended with a reduced section, after an annular bottom 17, to first form a valve seat 19, of frustoconical shape, then a dip tube 18, open at the bottom of the bottle (not shown).
  • a sampling orifice 20 or not places the internal space of the pump in communication with the tube 18, depending on the position taken a ball 21, forming a valve, relative to the cooperating seat 19, under the effect of a pressure of liquid acting on it.
  • the pump body internally has pillars 22, on which the lower end of the spring 13 rests.
  • the internal tube 5 of the movable member is extended by a driving piston 31 , forming an internal shoulder 23 which serves as a bearing surface at its upper end.
  • the double-acting pump of the embodiment of FIGS. 1 to 3 comprises two compression chambers with variable volume, with the additional feature that the withdrawn liquid reaches the expulsion orifice 16 via the outside of a precompression system essentially constituted by a needle piston 24, which closes this orifice as long as the pressure exerted on it by the liquid is not sufficient to overcome the elastic restoring force of a helical spring 25.
  • the latter is housed in a blind bore 26 (Fig. 2) formed in the inner tube 5 from then its upper end to a transverse partition 27. It is compressed between this partition and an annular bearing of the needle piston 24 and held laterally between the tube 5 and d on the one hand the piston itself, on the other hand an axial projection 28 of the partition 27.
  • the needle piston 24 has a circular sealing lip 29 which, in all the positions of the piston, prevents the liquid from entering the '' bore 26.
  • a frustoconical seat 30 is formed at the end of the external tube 4, around the expulsion orifice 16, to cooperate with the needle piston 24.
  • the movable assembly of the pump includes a secondary piston 32, formed outside the external tube 4 at its lower end.
  • the piston 31 slides in the lower part of the pump body, in leaktight contact with the internal wall of the shell 2 thanks to elastic circular lips 33 and 34 (Fig. 1 and 3) of which it is provided at its two ends respectively. It thus delimits in the shell 2 a first compression chamber 35 for the liquid, the variation in volume of which is shown in FIGS. 1 and 3 showing the two extreme positions, high and low of the piston 31.
  • the secondary piston 32 slides in the pump body at the sleeve 3, with which it remains in permanent sealed contact by a lower lip 36.
  • the two chambers 35 and 37 communicate with each other by orifices 38 (Fig. 2) drilled laterally through the internal tube 5.
  • the second chamber 37 communicates with the expulsion orifice 16 by longitudinal channels 39, distributed annularly and arranged in the thickness of the movable member. In the case described, these channels are in fact formed between the two tubes 4 and 5, by grooves 41 hollowed longitudinally in the internal tube 5 until opening by radial conduits 42 at the end of this tube.
  • a last essential element of the pump is represented by a sliding piston 43, which is used during the operation of the pump, to control the opening and closing of the communication between the two compression chambers of the withdrawn liquid.
  • This piston is identical in shape to that of the precompression needle piston 24, but it is oriented vertically in opposite direction in the axis of the movable member. It is located inside the inner tube 5, under the transverse partition 27. Its cylindrical body is chamfered at least at its upper end, to cooperate there with flexible lugs 44, which are produced by molding in the material of the tube 5 and which protrude in a circle under the transverse partition 27.
  • the lugs 44 tend to push the wandering piston 43 downwards, but they move apart to allow the piston to rise between them, towards the partition 27, under the effect of an overpressure of liquid prevailing in the chamber 35.
  • the wandering piston 43 also has an outer circular lip 45, which moves at the same time along the internal wall of the tube 5, always remaining below the orifices 38.
  • the tube 5 has a first change of section at 46, so that when the piston is in the low position, pushed back by the lugs 44, the lip 45 is in sealed contact with the wall of the tube 5, while on the contrary, when he is t in the high position, the liquid can freely flow from the chamber 35 to the orifices 38 and the second chamber 37.
  • the tube 5 also has a second change of section at 47, whose role is to limit the possible displacement of the piston 43 downwards, by abutment of its lip 45.
  • the driving piston 31 tends to compress the liquid located in the chamber 35, which applies the ball 21 to its seat 19 and thus isolates this chamber from the bottle.
  • the secondary piston 32 lowers in the intermediate position of FIG. 2, where it comes into tight contact with the sleeve 3 not only by its lower lip 36, but also by an upper lip 49. Both lips being oriented symmetrically at an angle, they cooperate to effectively close the second chamber 37.
  • the wandering piston 43 rises and opens the communication between the two chambers, and that consequently, the liquid passing via the channels 39 above the precompression piston 24 lowers the latter against the associated spring 25.
  • the liquid withdrawn from the assembly of the two chambers is therefore expelled through the orifice 16. This until the movable member reaches its extreme low position illustrated in FIG. 3.
  • the first chamber 35 reaches its minimum volume. It was emptied partly by expulsion of a first fraction of the dose of liquid withdrawn, but also partly by filling the second chamber 37 whose volume has increased. Then begins the ascent cycle of the mobile organ, which will expel a second fraction of the dose taken.
  • the driving piston 31 abuts by a ring 51 on the bottom 17 of the shell 2 and that the latter comprises around the projections 50 which separate the lip 33 from the wall of the shell.
  • the latter is pierced with a lateral orifice 52 which was previously closed by the piston 31 and which now ensures pressure balancing between the bottle and the chamber 35.
  • the above pump has been modified for a single-effect operation, the entire dose of liquid withdrawn being expelled during the lowering cycle of the movable member.
  • the same references have been used to designate the elements common to the pump operating in double effect and in the variant operating in single effect.
  • This variant differs in its constitution from the embodiment shown in Figures 1 to 3, in that the wandering piston 43 is removed and that the secondary piston 32 is extended downwards by a skirt 50 which abuts against the engine piston 31.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • External Artificial Organs (AREA)
EP89401284A 1988-05-10 1989-05-09 Zerstäubungspumpe, die einen Vordruck vor der Zerstäubung erzeugt Expired - Lifetime EP0346167B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806287 1988-05-10
FR8806287A FR2631393B1 (fr) 1988-05-10 1988-05-10 Pompe a precompression pour la diffusion d'un liquide

Publications (2)

Publication Number Publication Date
EP0346167A1 true EP0346167A1 (de) 1989-12-13
EP0346167B1 EP0346167B1 (de) 1994-08-17

Family

ID=9366176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401284A Expired - Lifetime EP0346167B1 (de) 1988-05-10 1989-05-09 Zerstäubungspumpe, die einen Vordruck vor der Zerstäubung erzeugt

Country Status (4)

Country Link
EP (1) EP0346167B1 (de)
AT (1) ATE110010T1 (de)
DE (1) DE68917531T2 (de)
FR (1) FR2631393B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694336A1 (de) * 1994-07-25 1996-01-31 Newburgh Manufacturing Corporation Zerstäuberpumpe zur kontinuierlichen Zerstäubung
EP0749786A1 (de) * 1995-06-20 1996-12-27 Emson, Inc. Spenderpumpe mit Entlüftung
US5881925A (en) * 1996-03-22 1999-03-16 Mitani Valve Co. Atomizer of reciprocating pump type
US5918778A (en) * 1997-12-19 1999-07-06 Emson, Inc. Pump and pump securing device which maintains consistent dosage accuracy, and method of securing a pump to a container
WO2003086649A1 (fr) * 2002-04-17 2003-10-23 Valois Sas Pompe de distribution de produit fluide
US6830163B2 (en) 2002-04-17 2004-12-14 Valois S.A.S. Fluid dispenser pump
CN100354048C (zh) * 2002-04-17 2007-12-12 瓦卢瓦有限合伙公司 流体产品分配泵

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652389B1 (fr) * 1989-09-26 1992-12-04 Debard Andre Perfectionnement aux pompes a precompression pour la diffusion d'un liquide.
DE19749514A1 (de) * 1997-11-08 1999-05-12 Pfeiffer Erich Gmbh & Co Kg Verfahren zum Ausbringen von wenigstens zwei verschiedenen Medien und Spender dafür
FR2885887B1 (fr) * 2005-05-20 2010-11-05 Rexam Dispensing Sys Pompe a pointeau pour la distribution de produit liquide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133259A5 (de) * 1971-04-08 1972-11-24 Step
EP0127449B1 (de) * 1983-05-24 1987-08-26 Yoshino Kogyosho CO., LTD. Handbetätigter Flüssigkeitsspender

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133259A5 (de) * 1971-04-08 1972-11-24 Step
EP0127449B1 (de) * 1983-05-24 1987-08-26 Yoshino Kogyosho CO., LTD. Handbetätigter Flüssigkeitsspender

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694336A1 (de) * 1994-07-25 1996-01-31 Newburgh Manufacturing Corporation Zerstäuberpumpe zur kontinuierlichen Zerstäubung
US6047856A (en) * 1995-06-20 2000-04-11 Emson, Inc. Dispensing pump with priming feature
EP0749786A1 (de) * 1995-06-20 1996-12-27 Emson, Inc. Spenderpumpe mit Entlüftung
US5702031A (en) * 1995-06-20 1997-12-30 Emson, Inc. Dispensing pump with priming feature
CN1076990C (zh) * 1995-06-20 2002-01-02 埃姆森有限公司 具有起动结构的分配泵和从泵室中排出空气的方法
US5881925A (en) * 1996-03-22 1999-03-16 Mitani Valve Co. Atomizer of reciprocating pump type
DE19712256B4 (de) * 1996-03-22 2007-09-06 Mitani Valve Co. Zerstäuber mit sich hin- und herbewegenden Kolben
US5918778A (en) * 1997-12-19 1999-07-06 Emson, Inc. Pump and pump securing device which maintains consistent dosage accuracy, and method of securing a pump to a container
WO2003086649A1 (fr) * 2002-04-17 2003-10-23 Valois Sas Pompe de distribution de produit fluide
FR2838785A1 (fr) * 2002-04-17 2003-10-24 Valois Sa Pompe de distribution de produit fluide
US6830163B2 (en) 2002-04-17 2004-12-14 Valois S.A.S. Fluid dispenser pump
CN1317082C (zh) * 2002-04-17 2007-05-23 瓦卢瓦有限合伙公司 流体产品分配泵
CN100354048C (zh) * 2002-04-17 2007-12-12 瓦卢瓦有限合伙公司 流体产品分配泵

Also Published As

Publication number Publication date
DE68917531T2 (de) 1995-03-23
FR2631393B1 (fr) 1993-09-17
FR2631393A1 (fr) 1989-11-17
DE68917531D1 (de) 1994-09-22
EP0346167B1 (de) 1994-08-17
ATE110010T1 (de) 1994-09-15

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