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
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers
• • 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
  • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
• • 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
• • 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

Definitions

• the present invention relates to a dispensing assembly for fluid dispenser.
• the present invention also relates to a fluid dispenser comprising such a dispensing assembly.
• the present invention relates more particularly to spraying devices, in particular of the nasal type, and is preferably applied to sprayers incorporating a shutter of the dispensing orifice.
• the spray head In a sprayer, for example of the nasal type, the spray head generally incorporates a spraying profile provided upstream of the dispensing orifice and adapted to swirl the product before its expulsion in the form of a spray.
• this spray profile may comprise one or more non-radial channels provided at the bottom wall of the spray head, said channels leading to a swirl chamber disposed just upstream of the dispensing orifice.
• an insert is disposed in the spray head to substantially fill the dead volume of the expulsion channel and thus leave only a small channel, and secondly to form the bottom of the profile of spray. An additional piece forming the insert is necessary to achieve said spray profile.
• the presence of a shutter upstream of the dispensing orifice also poses specific problems.
• Shutters for closing the dispensing orifice of a fluid dispenser are well known in the state of the art. There are several types.
• a first family of shutters comprises those which are elastically biased towards 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 may either comprise shutters of deformable material, or shutters made in the form of piston sliding in the expulsion channel a distance from the dispensing orifice under the effect of the pressure exerted by the product.
• the document US-5,806,762 discloses a deformable shutter, surrounding a rigid insert, whose shutter function is directly related to the pressure exerted by the fluid within the device.
• Another family of shutters comprises shutters mechanically deformed by a portion of the dispensing head at the time of actuation of the device to dispense a dose of product.
• the opening of the shutter is independent of the pressure exerted by the product.
• These shutters although operating correctly, have the disadvantage of being relatively complicated to manufacture and assemble, and therefore expensive. Generally, they require a modification of the dispensing head to allow adaptation of the shutter which also involves an increase in the manufacturing cost of the fluid dispenser device.
• the dispensing head incorporates a spray profile
• the presence of the shutter generally alters the geometry of said spray profile, which is detrimental to the quality of the spray during the expulsion of the product.
• US-5,348,189 discloses a device without a shutter.
• FR-2,815,674 discloses a device allowing a connection between the pump chamber and the tank only during priming, when the pump chamber contains mainly air.
• the present invention aims to provide a fluid dispenser fluid dispenser device that does not reproduce the aforementioned drawbacks.
• the present invention also aims to provide a dispensing device that is simple to manufacture and assemble, and that does not require modifications of the dispensing head.
• the present invention also aims to provide a fluid dispenser device that avoids contact between the product to be dispensed and the metal elements, such as the pump return spring.
• the present invention also aims to provide a fluid dispenser device avoiding the risk of blockage of the pump, even after several successive actuations.
• the present invention therefore relates to a fluid dispenser device comprising a reservoir, a pump comprising a pump body defining a pump chamber, a first piston sliding in said pump body between a non-dispensing position and a position dispenser, a spray head mounted on said pump and manually movable between a rest position, wherein said first piston is in non-dispensing position, and an actuating position, wherein said first piston is moved to its position dispenser, said spray head having a body defining an expulsion channel and provided with a dispensing orifice, a shutter disposed in said expulsion channel of the spray head upstream of the dispensing orifice, said shutter being movable between a closed position, in which it cooperates with said dispensing orifice for ob and a non-sealing position, in which it is moved away from said dispensing orifice, said shutter being
• said body of the spray head comprises upstream of said dispensing orifice a spray profile adapted to spraying the fluid during dispensing, said spraying head comprising a rigid insert disposed upstream of said spraying profile and having an end surface at least partially forming the bottom of said spraying profile, said rigid insert being integral with said first piston .
• said rigid insert is made in one piece with said first piston.
• said first piston comprises at least one through passage allowing the fluid to pass from the inside to the outside of said first piston.
• said shutter is disposed inside said first piston, in particular slidably.
• said second piston cooperates with said shutter at the end of actuation when said spray head arrives in its actuated position.
• said first piston is fixed relative to said spray head.
• the pump comprises a return spring disposed out of contact with the fluid.
• the pump body comprises a first external axial sleeve and a second axial sleeve, said first piston cooperating sealingly on the one hand with the inside of said first external axial sleeve and on the other hand with the outside of said second sleeve. axial.
• said upper edge of said second axial sleeve slides sealingly against the inner surface of said first piston to the dispensing position of said first piston, wherein said second axial sleeve no longer co-operates sealingly with said first piston, thereby connecting the dosing chamber to the tank.
• said pump body comprises a third internal axial sleeve, said second piston cooperating sealingly on the one hand with the inside of said second axial sleeve and on the other hand with said third internal axial sleeve.
• the return spring of the pump is disposed between said second and third axial sleeve of the pump body and said second piston.
• said second piston comprises an outer wall cooperating sealingly with the second axial sleeve of the pump body, and an inner wall sealingly cooperating with the third internal axial sleeve of the pump body, preferably inside that -this.
• the present invention also relates to a fluid dispenser device comprising a reservoir and a dispensing assembly as defined above.
• FIG. 1 is a diagrammatic cross-sectional view; a dispensing device according to an advantageous embodiment of the invention, in the rest position, - Figure 2 is a view similar to that of Figure 1, in the actuating position, and - Figure 3 is a enlarged detail view of the device of FIG.
• the present invention more particularly relates to a dispensing device provided with a shutter.
• Figures 1 and 2 show a nasal dispensing head, but the present invention can very well also adapt to dispensing heads of another type.
• the dispensing device comprises a pump 50 and a spray head 10.
• the pump 50 can be mounted on a reservoir 100, only a portion of which is shown in dashed lines in FIG. It may comprise a dip tube 59 extending towards the bottom of the tank.
• the mounting of the pump can be achieved by means of a fixing ring 80, advantageously with the interposition of a seal 90.
• the ring 80 can be a separate part, as shown in FIG. formed of a monobloc piece with the pump. Its assembly can be arbitrary, for example by snapping, screwing or crimping.
• the dispensing head 10 comprises a body 1 1 defining an expulsion channel 12 which ends with a dispensing orifice 1.
• a rigid insert 30 is disposed in this expulsion channel 12 to limit the volume death of the expulsion channel and thus define a narrow passage for the product, promoting its spraying at the dispensing orifice.
• the dispensing head comprises a spraying profile (not shown), preferably formed between the bottom end wall of the spray head 10 and said insert 30, the dispensing orifice 1 then preferably located in the center of said profile. spray.
• the spray profile may comprise non-radial swirl channels (not shown) which connect to a swirl chamber disposed directly upstream of the dispensing orifice 1.
• the spraying profile can be formed in the bottom wall of the head 10 or on the contrary in the insert 30.
• the pump 50 comprises a pump chamber 56 provided with an inlet valve 75, such as a ball in the example of FIG.
• the pump 50 comprises a pump body 52 in which a first piston 51 slides between a rest or non-dispensing position and an end position of actuation or dispensing.
• the pump also comprises a shutter 40 disposed upstream of the dispensing orifice 1 and adapted to close this orifice when the pump is not used.
• This shutter 40 is movable between a closed position in which it cooperates with the dispensing orifice 1 to close it, and a non-shutter position in which it is moved away from said dispensing orifice 1.
• the shutter In the rest position the shutter is resiliently biased towards its closed position, in particular by means of the return spring 70 of the pump as shown in the drawings.
• a specific spring could be assigned to said shutter 40.
• the swirl chamber of the spray profile is of substantially zero volume in the closed position, the displacement of the shutter 40 to its non-shutter position creating a volume forming the swirl chamber.
• Other implementations are however also possible.
• the pump shown in the figures comprises a second piston 57 which slides sealingly in the pump body 52.
• This second piston 57 is adapted to cooperate with the shutter 40 to move it to its non-sealing position, preferably end of actuation of the pump.
• This provides a number of advantages. Indeed, this implementation makes it possible to achieve a mechanical opening of the shutter 40 independent of the pressure of the product in the pump during actuation. In addition, this implementation allows to open the shutter at the end of actuation, which ensures a perfect distribution of the entire dose.
• Said rigid insert 30 is preferably integral with said first piston 51.
• the insert 30 is formed by said first piston 51, that is to say that these two parts are made of a single piece. This saves a room compared to known pumps.
• the first piston 51 has a through passage 55 formed in a wall of said first piston 51, and which is adapted to allow the passage of the fluid from the inside of said first piston 51 outwardly of said first piston 51 .
• the first piston 51 is fixed relative to the dispensing head 10, and said shutter 40 slides inside said first piston 51. In this way, the geometry of the spray profile remains unchanged, in particular at the level of the non-radial channels, whatever the position of the shutter 10.
• the pump chamber 56 is connected to the tank 100 at the end of each actuation, that is to say when the first piston 51 reaches its dispensing position. This allows to equalize the pressures between the tank and the pump chamber, thus avoiding a too strong depression which could block the proper functioning of the pump.
• the figures represent an advantageous variant of the pump, in which the pump body 52 comprises three axial sleeves, a first external axial sleeve 52 ', a second axial sleeve 52 ", and a third internal axial sleeve 52'".
• the first piston 51 slides sealingly along the inner surface of the first outer axial sleeve 52 '.
• This first piston 51 preferably forms a tubular wall, further adapted to cooperate with the axial sleeve 52.
• it is the upper edge of said second axial sleeve 52 "which slides on the inner surface of said first piston 51.
• the second piston 57 preferably has an outer wall 57 'and an inner wall 57 ".
• the outer wall 57 ' is adapted to cooperate sealingly with the inner surface of the second axial sleeve 52 ", while the inner wall 57" cooperates sealingly with the third internal axial sleeve 52' "of the pump body 52, preferably with the inner surface thereof as shown in the figures.
• the return spring 70 of the pump is disposed between the second and third axial sleeves 52 "and 52 '" of the pump body 52 and the second piston 57, so that it is arranged out of contact with the product. fluid, avoiding any risk of contamination of the fluid product by the metal of the spring.
• the pump body 52 of the invention therefore has a complex structure, but can be easily produced by molding, and which makes it possible to perform the advantageous functions of the invention.
• the present invention therefore makes it possible to produce with a limited number of parts, in particular the head 10, the first piston 51 (forming an insert 30), the shutter 40, the second piston 57, the spring 70 and the pump body 52, the following functions: - reliable operation without risk of blockage of the pump due to excessive depression.

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

Applications Claiming Priority (2)

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ID=40171381

Family Applications (1)

Country Status (6)

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Family Cites Families (15)

• 2008
  • 2008-07-10 FR FR0854726A patent/FR2933679B1/fr active Active
• 2009
  • 2009-07-09 EP EP09794035A patent/EP2313206A1/de not_active Withdrawn
  • 2009-07-09 WO PCT/FR2009/051356 patent/WO2010004212A1/fr active Application Filing
  • 2009-07-09 US US13/003,537 patent/US20110133000A1/en not_active Abandoned
  • 2009-07-09 CN CN2009801264875A patent/CN102089081A/zh active Pending
  • 2009-07-09 JP JP2011517208A patent/JP2011527213A/ja not_active Withdrawn

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