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
  • B05B11/1001—Piston pumps
  • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
  • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
  • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
  • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
  • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
  • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
  • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
  • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
  • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
  • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
  • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
  • B05B1/3468—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber
• • 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
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0064—Lift valves
  • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
• • 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
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0072—A valve member forming part of an outlet opening
• • 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
  • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
  • B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element
• • 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
  • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
  • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke

Definitions

• Dispensing head and fluid dispenser comprising such a dispensing head
• the present invention relates to a dispensing head for a fluid dispenser, and more particularly a dispensing head incorporating a shutter of the dispensing orifice.
• the present invention also relates to a fluid dispenser comprising such a dispensing head.
• the shutters for a dispenser orifice for dispensing a fluid product are well known in the state of the art. There are several types.
• a first family of shutters includes those which are urged elastically to their closed position and which are deformed or displaced by the pressure of the product in the dispensing phase to open the dispensing orifice.
• These devices can either include shutters made of deformable material, or shutters produced in the form of a piston sliding in the expulsion channel away from the dispensing orifice under the effect of the pressure exerted by the product.
• Another family of shutters comprises shutters mechanically deformed by a part of the dispensing head when the device is actuated to dispense a dose of product. In this case, the opening of the shutter is independent of the pressure exerted by the product.
• Document GB-17793 discloses a screw-on insert for modifying the volume of a swirl chamber. This insert can be used as a shutter, but the user must manually move said insert by screwing in and out of its closed position.
• the object of the present invention is to provide a fluid dispenser head for a fluid dispenser which does not have the abovementioned drawbacks.
• the object of the present invention is to provide a dispensing head which is simple to manufacture and assemble, and which does not require modifications to the dispensing head.
• the present invention also aims to provide a dispensing head for a fluid dispenser in which the geometry of the spray profile at the dispensing orifice is not changed during the expulsion of the product, guaranteeing a quality optimal spray.
• the present invention also aims to provide a fluid dispenser comprising such a dispensing head.
• the present invention therefore relates to a dispensing head for a fluid dispenser, comprising a body defining a product expulsion channel ending in a dispensing orifice, a rigid insert being disposed in said expulsion channel, said head dispensing device comprising a closure element disposed in said expulsion channel, said closure element being movable between a closure position of the expulsion channel and a non-closure position of the expulsion channel, said element the shutter being urged at rest towards its closed position, moving automatically to its non-closed position during the distribution of the fluid, and automatically returning to its closed position after distribution of the fluid, said element obturation being formed in a single piece integrally with said rigid insert, so that said rigid insert is displaceable in said channel of e xpulsion between a rest position, corresponding to the shutter position of the shutter element, and an actuation position, corresponding to the non-shutter position of the shutter element.
• a hollow sleeve is fixedly disposed in said expulsion channel, said downstream end of said rigid sliding insert, preferably in a sealed manner, in said sleeve and a passage for the product being provided between the external wall of said sleeve and the internal wall. of the expulsion channel.
• the downstream end of said rigid insert extends beyond said fixed hollow sleeve and cooperates sealingly with said dispensing orifice.
• a spray profile is defined between the front wall of the expulsion channel and said fixed hollow sleeve.
• the present invention also relates to a device for dispensing a fluid product comprising a dispensing head as defined above.
• the device is provided with a pump comprising a piston for dispensing the product and an outlet valve, said rigid insert forming the or being integral with said outlet valve of said pump, said rigid insert being moved towards its actuating position. upon expulsion of the product, and being automatically returned to its rest position at the end of expulsion of the product.
• said pump comprises a hollow rod defining said expulsion channel, said hollow rod incorporating on the one hand the dispensing orifice and on the other hand the piston of the pump.
• - Figure 1 is a schematic cross-sectional view of a dispensing head part according to an advantageous embodiment of the invention, in the closed position
• - Figure 2 is a view similar to that of Figure 1 , in the distribution position
• - Figure 3 is a schematic cross-sectional view of a fluid dispenser according to an advantageous embodiment of the invention.
• the present invention relates to a dispensing head provided with a shutter.
• Figures 1 and 2 show the end part of a nasal dispensing head, but the present invention can also very well be adapted to dispensing heads of another type.
• the dispensing head comprises a body 1 defining an expulsion channel 2 which ends in a dispensing orifice 3.
• a rigid insert 4 is placed in this expulsion channel 2 making it possible to limit the dead volume of the expulsion channel and thus define a narrow passage for the product, favoring its spraying at the level of the dispensing orifice.
• the dispensing head comprises a spray profile 21, preferably made at the level of the front end wall 20 of the expulsion channel 2, the dispensing orifice 3 then being located in the center of said spray profile 21.
• the spray profile can include swirl channels which connect to a swirl chamber disposed directly upstream of the dispensing orifice 3.
• the rigid insert 4 is arranged movably in the expulsion channel 2, between a rest position shown in Figure 1 and an actuation position shown in Figure 2.
• Part of said rigid insert preferably its downstream end 5 in the direction of flow of the product, forms a closure element of the dispensing orifice. It therefore moves together with said insert 4 between a closed position ( Figure 1), corresponding to the rest position of the insert 4, and a non-closed position ( Figure 2), corresponding to the position actuation of the insert 4.
• the insert 4, forming the shutter is biased towards its closed position, and during the distribution of the product, it is automatically moved to its non-closed position, then returning again automatically to its initial position, namely its closed position.
• a hollow element such as a hollow sleeve 10
• the spray profile 21 can be produced between said fixed sleeve 10 and said front wall 20, in one or other of these elements, or even simultaneously in both if desired.
• the downstream end 5 of the rigid insert 4 slides, preferably in a sealed manner, inside said fixed hollow sleeve 10, while the fluid product flows outside of said sleeve 10, between its external wall and the internal wall of the expulsion channel 2.
• the downstream end 5 of the insert 4 has a diameter less than the diameter of the insert 4 as a whole, so as to reduce the dead volume as much as possible.
• the rigid insert 4 fills substantially the entire volume of the expulsion channel 2, leaving only a narrow passage for the product, and the presence of the hollow sleeve 10 at the downstream end of the expulsion channel 2 involves a downstream end portion 5 of the insert 4 with a reduced diameter to pass through said hollow sleeve 10.
• the front wall 20 of the expulsion channel 2 may include a spray profile 21.
• the embodiment shown in the figures has in this case an important advantage, in that in the actuating position, the spray profile 21 has an unmodified geometry, since it is defined between the fixed sleeve 10 and the bottom of the expulsion channel 2.
• This is very different from the shutters existing to date, made of deformable material, which are generally elastically deformed to their non-sealing position, so that the spray profile is necessarily changed at the time of expulsion, which can affect the quality of the spray.
• This drawback is not reproduced by the present invention, as clearly visible in the figures.
• the downstream end 5 of the rigid insert 4 extends beyond the hollow sleeve 10, and comes to cooperate in sealed manner with the dispensing orifice 3 in the rest position of said insert. rigid 4.
• This implementation ensures a closure at the distribution orifice 3 itself. This avoids a risk of contamination of the product remaining inside the swirl chamber or the spray profile after expulsion of the dose.
• FIG. 3 represents an advantageous exemplary embodiment of a dispenser comprising a dispensing head as described below. It comprises a reservoir (not shown) containing the dispensed product, on which is mounted a dispensing member, such as a pump 50, which comprises a piston 51, sliding in a pump body 52, the actuation of said piston 51 allowing to selectively distribute the product contained in the tank.
• a pump chamber 55 is defined between an inlet valve 56, which connects the pump chamber 55 to the reservoir, and an outlet valve 57 which connects the pump chamber 55 to the expulsion channel 2 of said dispensing head .
• the rigid insert 4 is integral with said outlet valve 57, so that it is moved from its rest position to its actuating position when the outlet valve 57 is open, allowing the product to be expelled. of said pump chamber 55.
• said rigid insert 4 itself forms the outlet valve 57 of the pump 50, and said rigid insert 4 is moved from its rest position to its actuation position at the end of the stroke. actuating the piston 51 of the pump, guaranteeing an opening of the expulsion channel 2 and of the dispensing orifice 3 at the precise moment when the product contained in the pump chamber 55 is expelled.
• the outlet valve 57 is closed by the return spring 59 of the pump 50, returning the insert 4 to its rest position, that is to say the position for closing the shutter (see Figure 1).
• the shutter is therefore open and closed mechanically by opening and closing the outlet valve 57 of the pump 50.
• the expulsion channel 2 is formed by a hollow rod 30 which is fixedly connected, or even formed in one piece as visible in the figures, with the piston 51 of the pump.
• This hollow rod 30 therefore also incorporates the dispensing orifice 3.
• the hollow rod 30 being non-removable, this implementation makes it possible to prevent any attempt to tear off the head which may contaminate the product.
• the body 1 has in this example only a function of actuating element of the pump 50. It can be removable and be made with any desired shape, and in particular be adapted by its shape or decoration to the product to be distribute.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Nozzles (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8869381

Family Applications (1)

Country Status (6)

Families Citing this family (14)

Family Cites Families (26)

• 2001
  • 2001-11-14 FR FR0114722A patent/FR2832079B1/fr not_active Expired - Fee Related
• 2002
  • 2002-11-13 CN CNB028252195A patent/CN100354046C/zh not_active Expired - Fee Related
  • 2002-11-13 EP EP02793230A patent/EP1446231B1/de not_active Expired - Fee Related
  • 2002-11-13 US US10/495,531 patent/US7954676B2/en not_active Expired - Fee Related
  • 2002-11-13 JP JP2003543742A patent/JP4481006B2/ja not_active Expired - Lifetime
  • 2002-11-13 WO PCT/FR2002/003871 patent/WO2003041865A1/fr active Application Filing

Non-Patent Citations (1)

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