EP0531606A1 - Valve de débit à réglage - Google Patents

Valve de débit à réglage Download PDF

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Publication number
EP0531606A1
EP0531606A1 EP92102393A EP92102393A EP0531606A1 EP 0531606 A1 EP0531606 A1 EP 0531606A1 EP 92102393 A EP92102393 A EP 92102393A EP 92102393 A EP92102393 A EP 92102393A EP 0531606 A1 EP0531606 A1 EP 0531606A1
Authority
EP
European Patent Office
Prior art keywords
valve
channel
flow control
control valve
valve seat
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.)
Withdrawn
Application number
EP92102393A
Other languages
German (de)
English (en)
Inventor
Franz Zimmerhackel
Gerd Brachmann
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.)
Deutsche Prazisions-Ventil GmbH
Deutsche Prazisions Ventil GmbH
Original Assignee
Deutsche Prazisions-Ventil GmbH
Deutsche Prazisions Ventil GmbH
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 Deutsche Prazisions-Ventil GmbH, Deutsche Prazisions Ventil GmbH filed Critical Deutsche Prazisions-Ventil GmbH
Publication of EP0531606A1 publication Critical patent/EP0531606A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices

Definitions

  • the invention relates to a flow control valve for a container, which contains a fluid product which is exposed to gas pressure and a discharge valve in a discharge channel, so that the product flows out through the discharge channel when the discharge valve is open, the flow control valve having a valve seat in the discharge channel Made of hard material and a rubber-elastic control slide pressed against the valve seat by the internal pressure of the container when the discharge channel is open, which regulates the passage cross section of the discharge channel in the region of at least one throttle channel forming a section of the discharge channel with decreasing internal pressure, in order to keep the flow rate largely constant hold.
  • the control member is designed as a rubber disc with an axial central bore forming the throttle channel and a recess on the side facing the valve seat.
  • the rubber washer is compressed radially so that the flow cross section of the bore is narrowed.
  • the constriction of the bore is correspondingly less and thus the passage cross-section is larger. Since the flow is a function of the internal pressure and the passage cross section, it remains largely constant regardless of the internal pressure.
  • rubbery material has the property that it swells when it comes in contact with certain liquids, e.g.
  • fatty or oily liquids as are often contained in such containers, such as aerosol or spray cans.
  • the nominal dimensions of rubber-elastic parts cannot be adhered to with tight tolerances during manufacture, apart from the fact that they are temperature-dependent and change over time due to signs of aging.
  • the aim is to keep the passage cross section very small, e.g. at about 0.2 mm2, the flow rate depends considerably on the exact adherence to the nominal dimensions of the control element.
  • the invention has for its object to provide a flow control valve of the generic type, in which the flow is maintained with higher accuracy.
  • this object is achieved in that the throttle channel is limited by a groove in the valve seat and the control element.
  • the throttle channel is mainly limited by the groove and only a small part by the rubber-elastic control element. Since the groove is formed in a hard material that can be manufactured with smaller dimensional tolerances than a rubber-elastic part and from a material that on the one hand does not swell and on the other hand is subject to slight signs of aging, the overall cross-section of the throttle duct can be manufactured and maintained more precisely than that of a hole in a rubber-elastic material.
  • the flow rate can also be measured and maintained very precisely, so that the product contained in the container can be used as economically as possible, largely independently of fluctuations in the internal pressure of the container, the rubber-elastic control element depending on the internal pressure more or less far into the Groove is pressed and in this way keeps the flow constant.
  • valve seat is formed by a shoulder surface in a connecting piece for a dip tube formed on the housing of the dispensing valve.
  • valve seat it is possible for the valve seat to be formed by a shoulder surface in a part of the dispensing channel which passes through an actuating attachment of the dispensing valve for the container.
  • the conventional dispensing valve need not be changed at all, while only a slight change is required in the conventional actuating attachment.
  • the valve seat is preferably formed by an essentially conical shoulder surface. This automatically ensures that a correspondingly shaped control element is centered.
  • the surface of the control element which interacts with the valve seat can be formed by at least part of a spherical or conical surface.
  • a spherical surface has the advantage that the contact surface between the valve seat and the control element can be correspondingly small and, accordingly, the pressure required to achieve the deformation of the control element which determines the passage cross section of the throttle channel can be correspondingly low.
  • the conical surface has the advantage that it is easier to manufacture.
  • the spherical surface is formed by part of the surface of a spherical zone, the flat surfaces of which each form one of the base surfaces of a cylinder, the outer diameter of which is somewhat smaller than the inner diameter of a section of the discharge channel surrounding the relevant cylinder.
  • the cylinders also ensure that the control element is guided in the output channel without impeding the flow.
  • the base area of the cone can also form the base area of a cylinder, the outside diameter of which is somewhat smaller than the inside diameter of a section of the dispensing channel surrounding the cylinder. With this design, the cylinder also provides additional guidance without impeding the flow.
  • At least one narrow secondary duct connects the region of the container containing the compressed gas upstream of the control element through the housing of the dispensing valve to the dispensing duct.
  • This narrow secondary channel allows the compressed gas contained in the container to be admixed with the escaping product when the dispensing valve is open, so that on the one hand an even more economical consumption of the product when the dispensing valve is opened and on the other hand a finer distribution of the product in the form of particles when it emerges from a spray head of the container is possible.
  • valve carrier 2 forms the upper part of a lid of a container which contains a fluid product exposed to gas pressure.
  • the seal between the cover and the valve carrier 2 is made by means of a rubber seal 3.
  • the fastening of the valve housing 1 in the valve carrier 2 is effected in that a radially inner circumferential wall 4 of the valve carrier 2 has indentations 5 which are pressed inwards at several circumferential locations and which are under a flange 6 of the Grip valve housing 1.
  • a clamping edge 7 formed on the upper side of the valve housing 1 presses a rubber-elastic sealing disk 8 against an end wall 9 of the valve carrier 2.
  • a hollow valve stem 10 engages through a central hole in the sealing disk 8.
  • the edge of the hole lies on a constriction 12 of the valve stem 10 in which there are transverse holes 13 which are connected to the inner cavity of the valve stem 10.
  • a valve actuating attachment with a spray nozzle or the like can be placed on this valve stem 10 in the usual way.
  • the valve stem 10 is pressed upwards by a spring 14.
  • the cavity 15 receiving the spring 14 stands over a channel 16, which runs through a nozzle 17 for fitting an immersion tube 18, in connection with the interior of the container.
  • the edge of the hole in the sealing disk 8 is bent downward by the constriction 12.
  • the transverse holes 13 are exposed and an output channel is opened, which leads from the interior of the container through the nozzle 17, the cavity 15, the transverse bores 19 and the cavity of the valve stem 10 to the outside.
  • annular escape space 19 for the material of the sealing washer 8 and adjoining filling channels 20, which connect the escape space 20 to the interior of the container outside the housing 1.
  • a central hole is provided in the end wall 9, so that an annular fill opening 21 results around the valve stem 10.
  • the fluid to be filled When filling, it is ensured that the fluid to be filled not only gets into the interior of the container through the cavity of the shaft 10, but is also fed through the filling opening 21.
  • the filling pressure axially compresses the sealing disk 8 in the clamping area and into the escape space 19.
  • a gap is exposed between the sealing disk 8 on the one hand and the end wall 9 and the peripheral wall 4 on the other hand, through which the fluid to be filled can flow into the container.
  • the fluid to be filled can also be filled in via the dispensing channel when the dispensing valve is open.
  • a flow control valve is also provided in the channel 16 of the nozzle 17. It has a valve seat 22 in the form of a conical shoulder surface in the connecting piece 17. In the valve seat 22 a groove 23 is formed which extends in the flow direction and which, together with a control element 24 made of rubber-elastic material, delimits a throttle channel.
  • the surface of the control element 24 which interacts with the valve seat is formed by part of the surface of a spherical zone, the flat surfaces of which each form one of the base surfaces of a cylinder 25 or 26.
  • the outside diameters of the cylinders 25 and 26 are somewhat smaller than the inside diameter of the section of the discharge channel surrounding the relevant cylinder 25 or 26.
  • control element 24 has been omitted to simplify the illustration.
  • the pressure on the control element 24 also decreases, so that it penetrates less deeply into the groove 23 and the passage cross section of the throttle duct is somewhat enlarged. In this way it is ensured that, regardless of the internal pressure of the container, the flow of the product through the throttle channel remains largely constant and economical consumption of the product is ensured.
  • the housing 1 consists of a relatively hard material, for example plastic or metal, in comparison to the rubber-elastic material of the control element 24.
  • the groove 23 can therefore be produced with relatively small dimensional tolerances. Then their dimensions are less dependent on temperature or aging.
  • the dimensions of the rubber-elastic control element 24 can only be observed with greater tolerances and are more subject to temperature-dependent and age-related changes.
  • the dimensions of the throttle duct as a whole are nevertheless to be observed more precisely and are less subject to temperature-dependent and aging-related changes than a throttle duct delimited over its entire circumference by a rubber-elastic material.
  • the conical surface of the valve seat 22 causes a centering in connection with the spherical surface of the control element 24 which is in contact with it of the control member 24 in the valve seat 22, so that the control member 24 is tight on the entire circumference of its spherical part, except for the groove 23, on the valve seat, while the cylinders 25 and 26 serve to guide the control member 24 in the output channel and the annular space surrounding them the product passes freely.
  • the spring 14 pushes the valve stem 10 back into the position shown, in which the dispensing valve is closed, and then the control member 24 falls down again by its own weight until it rests on the locking lugs 27.
  • FIG. 3 shows a modification of the flow control valve according to FIG. 1, in which a control element 24a in the form of a ball is provided instead of the control element 24. All other details correspond to the exemplary embodiment according to FIG. 1, which is why only the housing 1 with the flow control valve is shown in FIG. 3.
  • the mode of operation of the flow control valve according to FIG. 3 also corresponds to that of the flow control valve according to FIG. 1.
  • the modification according to FIG. 4 also differs from the exemplary embodiment according to FIG. 1 only by the control element 24b, which has a cone 30.
  • the base area of the cone 30 also forms the base area of the cylinder 26, the outer diameter of which is smaller than the section of the dispensing channel surrounding the cylinder 26.
  • the operation of this flow control valve also corresponds to that of the flow control valve according to FIG. 1.
  • FIGS. 5 and 6 differs from that according to FIG. 1 only in that a housing part 1a extending the housing 1 is pushed onto the connecting piece 17 of the housing 1 and in turn has a connecting piece 17a into which the immersion tube 18 is inserted in the press fit. Then the housing part 1a has an intermediate wall 31 with a through bore 32, and an approximately cup-shaped insert 33 is inserted between the lower end of the connecting piece 17 and the intermediate wall 31.
  • the insert 33 has in its underside a swirl chamber 34 which communicates with an annular space 36 via narrow grooves 35 opening tangentially into the swirl chamber 34, which in turn has a slot 37 in the peripheral wall of the housing part 1a with the area of the interior filled with compressed gas of the container is connected.
  • a coaxial bore 39 extends through the bottom 38 of the insert 33 and is aligned with the swirl chamber 34 and the bore 32.
  • the grooves 35 on the underside of the insert 33 are closed at the bottom by the intermediate wall 31. Together with the annular space 36 and the slot 37, they form a narrow secondary channel through which the compressed gas can enter the swirl chamber 34, where it flows tangentially and is mixed with the product flowing out through the bore 32 when the dispensing valve is actuated, the product being in fine particles is divided. This results in an additional throttling effect in the output channel, which ensures even more economical consumption of the product.
  • FIGS. 7 and 8 differs from that of FIG. 1 only in that the housing 1 upstream of the flow control valve in its side wall up to the discharge channel has radially continuous fine bores 40, which also have a narrow secondary channel for the outlet of compressed gas and its mixing with the product in front of the throttle channel.
  • the exemplary embodiment according to FIGS. 9 and 10 differs from that according to FIGS. 7 and 8 only in that radial grooves 41 in the shoulder of the housing adjoining the connecting piece 17 and radial grooves 41 in the outside of the connecting piece 17 aligned narrow axial grooves 42 are formed, which are closed to the ends by the immersion tube 18 and in this way form an as narrow (microfine) secondary channel as the bores 40.
  • FIGS. 11 and 12 differs from that of FIGS. 5 and 6 essentially only in the following.
  • the housing 1b is formed in one piece and does not contain the flow control valve. Rather, this is contained in a hood-like actuating attachment 43 for actuating the dispensing valve, specifically in a connection piece 45 formed on the bottom 44 of the actuating attachment 43, which is likewise made of hard plastic or metal, and in which the upper end section of the valve stem 10 is inserted in an interference fit.
  • a plurality of grooves 23 are formed, which together with the control element 24 form the controllable one Form throttle channel.
  • a plurality of axial grooves 46 are also arranged distributed over the circumference.
  • a radial bore 47 which ends in an annular groove 48, adjoins the section of the discharge channel delimited by the connecting piece 45, downstream of the flow control valve.
  • An approximately cup-shaped nozzle insert 49 is suitably inserted into the annular groove 48 and likewise has a swirl chamber 50 on its radially inner bottom side, which is connected to the bore 37 via tangential channels and bores leading to the annular space 51.
  • a coaxial bore 52 is formed in the bottom of the swirl chamber 50, which forms the outlet nozzle.
  • the mode of operation is the same as that of the exemplary embodiment according to FIGS. 5 and 6.
  • FIGS. 13 and 14 differs from that according to FIGS. 11 and 12 only in that instead of the control element 24 the control element 24b and only one groove 23 are provided.
  • the nozzle insert 49 inserted in the annular groove 48 has been omitted to simplify the illustration in FIG. 13.
  • FIG. 15 differs from that of FIGS. 13 and 14 only in that instead of the control element 24b, the control element 24a is provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Lift Valve (AREA)
  • Safety Valves (AREA)
EP92102393A 1991-08-29 1992-02-13 Valve de débit à réglage Withdrawn EP0531606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128653A DE4128653C2 (de) 1991-08-29 1991-08-29 Ventileinheit
DE4128653 1991-08-29

Publications (1)

Publication Number Publication Date
EP0531606A1 true EP0531606A1 (fr) 1993-03-17

Family

ID=6439378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102393A Withdrawn EP0531606A1 (fr) 1991-08-29 1992-02-13 Valve de débit à réglage

Country Status (10)

Country Link
EP (1) EP0531606A1 (fr)
JP (1) JP2512368B2 (fr)
AR (1) AR247935A1 (fr)
AU (1) AU655803B2 (fr)
BR (1) BR9200967A (fr)
CA (1) CA2063669A1 (fr)
DE (1) DE4128653C2 (fr)
HU (1) HUT62528A (fr)
MX (1) MX9201266A (fr)
ZA (1) ZA922042B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752631A (en) * 1996-03-19 1998-05-19 Soft 99 Corporation Valve device for aerosol container
US6070770A (en) * 1998-12-29 2000-06-06 Precision Valve Japan, Limited Aerosol flow regulator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3155308A1 (fr) 2014-06-16 2017-04-19 Fyfe Co. LLC Réparation de tuyaux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5742965A (en) * 1966-03-29 1967-10-05 T. S. G. Limited Fluid control valve
US3727635A (en) * 1971-07-12 1973-04-17 T Todd Pressure compensating trickle rate fluid outlet
GB2021698A (en) * 1978-05-05 1979-12-05 Valois Sa Aerosol valve with improved vapor mixing
GB1603971A (en) * 1978-05-30 1981-12-02 Metal Box Co Ltd Aerosol valves and housings therefor
US4396152A (en) * 1977-03-02 1983-08-02 Abplanalp Robert H Aerosol dispenser system
EP0234797A1 (fr) * 1986-02-11 1987-09-02 Bespak plc Récipients pour distribuer du gaz sous pression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS534950B2 (fr) * 1974-09-12 1978-02-22
JPS5558983U (fr) * 1978-10-19 1980-04-22
IT1134362B (it) * 1980-11-19 1986-08-13 Valvole Aerosol Res Italia Valvola dosatrice per l'erogazione di liquidi sotto pressione
JPS5827986U (ja) * 1981-08-13 1983-02-23 三菱電機株式会社 プリント基板の支持装置
JPH0610007Y2 (ja) * 1986-06-20 1994-03-16 積水化学工業株式会社 間仕切壁
IT1243765B (it) * 1990-03-06 1994-06-28 Coster Tecnologie Speciali Spa Perfezionamenti alle valvole per l'erogazione nebulizzata di liquidi
EP0518301A3 (en) * 1991-06-13 1993-03-10 Ep Spray System S.A. Sprayhead

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5742965A (en) * 1966-03-29 1967-10-05 T. S. G. Limited Fluid control valve
US3727635A (en) * 1971-07-12 1973-04-17 T Todd Pressure compensating trickle rate fluid outlet
US4396152A (en) * 1977-03-02 1983-08-02 Abplanalp Robert H Aerosol dispenser system
GB2021698A (en) * 1978-05-05 1979-12-05 Valois Sa Aerosol valve with improved vapor mixing
GB1603971A (en) * 1978-05-30 1981-12-02 Metal Box Co Ltd Aerosol valves and housings therefor
EP0234797A1 (fr) * 1986-02-11 1987-09-02 Bespak plc Récipients pour distribuer du gaz sous pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752631A (en) * 1996-03-19 1998-05-19 Soft 99 Corporation Valve device for aerosol container
US6070770A (en) * 1998-12-29 2000-06-06 Precision Valve Japan, Limited Aerosol flow regulator
WO2000040479A1 (fr) * 1998-12-29 2000-07-13 Precision Valve Japan, Limited Regulateur de debit d'aerosol

Also Published As

Publication number Publication date
CA2063669A1 (fr) 1993-03-01
HUT62528A (en) 1993-05-28
BR9200967A (pt) 1993-03-16
ZA922042B (en) 1992-11-25
AU655803B2 (en) 1995-01-12
MX9201266A (es) 1993-02-26
HU9201038D0 (en) 1992-06-29
JPH05262379A (ja) 1993-10-12
AU1307392A (en) 1993-03-04
JP2512368B2 (ja) 1996-07-03
AR247935A1 (es) 1995-04-28
DE4128653A1 (de) 1993-03-04
DE4128653C2 (de) 1994-08-18

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