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
• • 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
• • 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
  • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
• • 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
  • B05B11/1001—Piston pumps
  • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
  • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
• • 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
  • B05B11/1039—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being mechanically opened 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
  • 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
  • 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
  • B05B11/1061—Pump priming 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
  • B05B11/1066—Pump inlet valves
  • B05B11/107—Gate valves; Sliding valves
• • 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
  • B05B11/1094—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 having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
  • F04B19/20—Other positive-displacement pumps
  • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/10—Valves; Arrangement of valves
  • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
  • F04B53/125—Reciprocating valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/14—Pumps characterised by muscle-power operation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

• the present invention relates to a fluid dispenser device comprising a spray nozzle provided with several dispensing orifices and a pump for dispensing metered quantities of fluid. More particularly, the pump is a precompression pump in which the distribution of the fluid product is carried out at a high pressure of at least 15 bars. The present invention also relates to the method of assembling such a pump.
• Fluid dispensing devices comprising dispensing nozzles provided with a plurality of dispensing orifices or holes are known in particular from documents EP1878507 and WO2018100321.
• the diameter of the holes is generally between 8 and 20 ⁇ m.
• the nozzle is associated with a precompression pump delivering the fluid to the nozzle at a pressure below 7 bars.
• the nozzle is associated either with a pump whose pressure is between 2 and 7 bars, or with a pressurized valve operating with a propellant gas whose pressure is between 6 and 13 bars.
• WO2018219798 describe other examples of micro-hole nozzles.
• the object of the present invention is to provide a device and a pump which do not reproduce the aforementioned drawbacks.
• a particular object of the present invention is to provide a fluid dispenser device making it possible to associate a manually actuated precompression pump delivering a high pressure with a dispensing nozzle provided with several dispensing orifices.
• Another object of the present invention is to provide a pump which delivers the fluid product at a higher pressure compared to traditional pumps.
• the present invention also aims to provide such a pump which is simple and easy to manufacture and to assemble, and reliable in its use.
• Another object of the present invention is to provide such a pump which ensures complete and reproducible distribution of the contents of the pump chamber on each actuation, regardless of the user's actuation speed.
• Another object of the present invention is to provide a method of assembling such a pump which makes it possible to improve the reliability of the pump during storage and in use, in particular by improving the integrity of parts subjected to high pressure during of actuation.
• the present invention therefore relates to a fluid product dispensing pump, comprising a piston integral with an actuating rod and sliding in a pump body comprising a pump chamber defined between an inlet valve and an outlet valve.
• said outlet valve comprising an outlet valve element sliding during actuation in a sealed manner in the pump chamber
• said pump chamber comprising passage means such that, at the end of actuation of the pump, said outlet valve member cooperates in a non-sealed manner with said passage means to open said outlet valve to allow the expulsion of the product contained in the pump chamber
• said inlet valve comprising an inlet valve element sliding after closing the inlet valve in a sleeve of the pump body, said sleeve having a reduced diameter and containing a spring supported on the one hand on said valve element inlet and on the other hand on a bottom of said sleeve, said spring, besides expelling the product, also returning the piston to its rest position, said sleeve having an internal diameter less than 4.2 mm, advantageous
• a sleeve is inserted into said pump body to reinforce the side wall of said pump chamber.
• said sleeve comprises a shoulder defining said means of passage of said outlet valve.
• a sealed weld for example by ultrasound, is provided between said pump body and said sleeve, advantageously between two respective radial flanges of said pump body and said sleeve.
• said outlet valve element is fixed in said piston.
• said sleeve of the pump body in which said inlet valve element slides comprises external reinforcing ribs.
• the present invention also relates to a fluid dispenser device comprising a pump as described above.
• FIG. 1 is a schematic cross-sectional view of a pump according to the prior art, in the rest position
• FIG. 2 is a partial schematic view in cross section of the pump of Figure 1 during assembly of the top piston
• FIG. 3 is a schematic cross-sectional view of a fluid dispenser device according to an advantageous embodiment
• FIG. 4 is an enlarged detail view in cross section of a part of the pump shown in Figure 3,
• FIG. 5 is an enlarged perspective detail view of another part of the pump shown in Figure 3,
• FIGS. 6 to 9 are schematic cross-sectional views of a pump according to a first advantageous embodiment, respectively in the rest position, at the start of the actuation stroke, during the actuation stroke and at the end of actuation stroke,
• FIGS. 10 and 11 are schematic cross-sectional views of a pump according to an advantageous embodiment of the present invention, respectively in the rest position and at the end of the actuation stroke,
• FIGS. 12 and 13 are partial schematic views in cross section of the pump of Figure 6, respectively during and at the end of assembly of the top piston, and
• FIG. 14 is a partial schematic view in cross section of the pump of Figure 6 during assembly of the low piston.
• Figures 1 and 2 illustrate a pump of the prior art, according to document WO2014125216.
• this pump of the prior art comprises a pump body 3 in which slides a piston 1 integral with an actuating rod 2 on which the user presses to actuate the pump.
• the piston 1 slides in a pump chamber 5 defined in the pump body 3 between an inlet valve 1 1 and an outlet valve 12.
• a ring of fixing 4 for example crimpable, screwable or snap-on, allows the pump to be fixed to a reservoir.
• the inlet valve 11, open in the rest position of the pump, as shown in Figure 1, is formed by an inlet valve element 10 movable in the pump body 3 during actuation of the pump and adapted to cooperate with a part of the pump body 3 at the start of actuation of the pump to close said inlet valve 11.
• Said inlet valve element 10 is produced in the form of a hollow cylinder closed on one side by a bottom wall, the edge of the open end of said hollow cylinder cooperating in a sealed manner from the start of actuation. of the pump with a cylinder 9 of the pump body 3 to close the inlet valve 1 1.
• a spring 20 rests on the one hand on a bottom wall of the inlet valve element 10 and on the other hand on a part of the pump body 3.
• the outlet valve 12 comprises an outlet valve element 39, advantageously formed by the lower lip of the piston 1, and is made in such a way that, when the pump is actuated, it is only open at the end. actuation of the pump to allow the expulsion of the product contained in the pump chamber.
• This opening is made at the level of passage means formed at the level of a radial internal shoulder 40 of the pump body.
• the objective of said passage means 40 is to form at least one fluid passage when the outlet valve element 39, which during the entire actuating stroke of the pump cooperates in a sealed manner with the pump body 3, comes at the end of the actuation stroke at said passage means 40.
• the expulsion of the product contained in the pump chamber 5 is carried out independently of the actuation speed exerted by the user.
• the inlet valve element 10 cooperates with the spring 20 which, upon actuation of the pump, is compressed by the movement of the inlet valve element 10 under the effect of the pressure. pressure created in the pump chamber.
• said compressed spring 20 At the end of the pump actuation stroke, when the outlet valve 12 is open, said compressed spring 20 will be suddenly released, so that the product contained in the pump chamber is expelled through of said spring.
• said spring 20 of the inlet valve 11 also acts as a pump return spring, thus returning the piston 1 to its rest position after expulsion of the product.
• the pump of Figures 1 and 2 therefore comprises two pistons, on the one hand the piston 1, part of which defines the outlet valve, and on the other hand the inlet valve element 10 defining the inlet valve, and which upon actuation acts as a piston against the outer surface of cylinder 9 of pump body 3.
• the inlet valve element 10 is also assembled around the sleeve 9 with its sealing lip which strikes the upper edge of said sleeve.
• the inlet valve element 10 is also assembled around the sleeve 9 with its sealing lip which strikes the upper edge of said sleeve.
• This pump of the prior art shown in Figures 1 and 2 typically delivers a pressure of about 7 bars.
• the spring 20 typically has a force F of 13 N, and the surface S, which corresponds to the outer diameter of the sleeve 9 around which the valve element 10 will slide during the actuation is typically 18.8 mm 2 (the external diameter of the sleeve 9 being typically 4.9 mm).
• the pressure P is therefore approx. 7 bars.
• a subject of the present invention is in particular a precompression pump adapted to deliver a pressure of at least 15 bars, advantageously of at least 20 bars.
• the pump according to the invention comprises a pump body 3 in which slides a piston 1 integral with an actuating rod 2 on which the user presses to actuate the pump.
• the piston 1 slides in a pump chamber 5 defined in the pump body 3 between an inlet valve 1 1 and an outlet valve 12.
• a fixing ring 4 for example crimpable, screwable or snap-on, makes it possible to fix the pump on a tank.
• the side wall of the pump chamber 5 is reinforced by inserting a sleeve 50 into the pump body 3.
• This sleeve 50 may be integral, for example in one piece, with the fixing ring 4.
• This sleeve 50 thus forms a double wall in the pump chamber 5, which makes it possible to avoid deformation of the internal side wall of the pump chamber 5 because of the high pressure created by the pump during actuation.
• This sleeve 50 comprises the radial shoulder which defines the outlet valve 40.
• a sealed weld 55 is provided, for example by ultrasound, preferably between two radial flanges respectively of said pump body 3 and of said fixing ring 4 which incorporates the sleeve 50.
• the inlet valve member 10 is solid and has peripheral sealing lips which extend radially outward. In the rest position, visible in particular in Figure 6, these sealing lips do not cooperate in a sealed manner with the sleeve 9, so that the inlet valve 11 is open.
• the valve element 10 will slide axially in the sleeve 9 by compressing the spring 20. This sliding is carried out in a sealed manner, the sealing lips of the valve element 10 cooperating in a sealed manner with the sleeve 9.
• the sleeve 9 has a reduced diameter compared to the pump body 3. It advantageously comprises external reinforcing ribs 90, visible in particular in Figures 5 and 7 to 9.
• This implementation of the sleeve 9 allows its radial dimensions to be reduced, typically with an internal diameter smaller than the external diameter of the sleeve 9 of the pump of FIG. 1.
• the sleeve 9 of the pump of FIG. 6 could have a diameter of less than 4.2 mm, advantageously less than 4 mm, preferably 3.9 mm.
• the piston 1 and the outlet valve member 39 could be made as a single piece, but preferably, as shown in Figures 3 and 6 to 14, the outlet valve member 39 is formed in one piece. separate which is fixed in the piston 1. This fixing can be done by press-fitting, snapping, screwing, or any other suitable fixing.
• the sealing lips of the piston 1 and the outlet valve member 39 face in the same direction, downward in the position of Figure 6.
• One of the characteristics of the pump according to the invention is the assembly of the piston 1 and the outlet valve element 39 in the sleeve 50. Unlike the pump of Figures 1 and 2, this assembly is done from below, as visible in Figures 12 and 13. Thus, the sealing lips are not weakened by this assembly, said lips being oriented in the opposite direction to the direction of assembly.
• the elastic deformation of the sealing lips is not achieved by frontal contact of the radially outer surface of the lips against the sleeve 50 of the pump chamber 5, but on the contrary, the lips are progressively deformed radially towards the end. 'interior, so that the sealing surfaces are not subjected to any sudden stress which could impair their sealing capacity.
• the inlet valve member 10 has sealing lips oriented in the opposite direction to the sealing lips of the piston 1 and the outlet valve member 39. As seen in Figure 14, said valve member d The inlet 10 is assembled into the sleeve 9 of the pump body from above. In this way, its sealing lips are not damaged during assembly either.
• the pump according to the invention therefore substantially improves the sealing capacities of the various sealed parts, namely the piston 1, the outlet valve element 39 and the inlet valve element 10.
• a spring having a greater force typically at least 20 N, advantageously 25 N.
• the present invention makes it possible to provide a pre-compression pump of standard type but capable of distributing the fluid product at a pressure of at least 15 bars, advantageously around 20 bars, which is much higher than traditional standard pumps and even higher than valves operating with propellant gas.
• the actuation force of such a pump with a spring at 25 N and the surface S of 12 mm 2 is less than 60 N, advantageously about 50 N, which remains acceptable.
• the present invention also provides an advantageous assembly method.
• This assembly process comprises the following steps:
• the method further comprises the following steps:
• the step of inserting the spring 20 and the inlet valve member 10 into the sleeve 9 of reduced diameter can be performed before the step of inserting the piston 1 and the outlet valve member 39 in the sleeve 50.
• the inlet valve 11 closes, by sealed cooperation between the lips of the inlet valve element 10 and the internal cylindrical surface of the sleeve 9, while the outlet valve 12 remains closed.
• the spring 20 is compressed under the effect of the inlet valve element 10 which slides in the sleeve 9.
• the sleeve 9 having a reduced diameter with respect to the sleeve 50 arranged in the pump body 3, and the fluid contained in the pump chamber 5 being incompressible, this compression of the spring 20 occurs relatively easily, despite the high force of said spring 20.
• FIG. 9 illustrates the actuated position, with the outlet valve open and therefore the contents of the pump chamber 5 which are expelled under the effect of the spring 20 which expands.
• the fluid product is then expelled with a pressure of at least 15 bars, advantageously of at least 20 bars.
• Figures 10 and 11 show an alternative embodiment, in which a second spring 80 is provided to assist the user in his actuation force, in order to reduce the latter.
• the second spring 80 is advantageously arranged around the piston 1 to urge it towards its actuated position.
• the second spring 80 therefore acts against the spring 20, and therefore its force must be less than that of the spring 20.
• the piston 1 may be integral with an outer sleeve 2 'assembled around the actuating rod 2, itself integral with the outlet valve element 39.
• This implementation could also be adapted to the variant of Figures 6 to 9.
• the present invention also relates to a fluid dispenser device comprising a pump as described above, associated with a spray nozzle comprising a plurality of dispensing orifices.
• micro-hole nozzle such as for example that described in document WO2018100321
• a fluid arriving at high pressure typically greater than 15 bars.
• the present invention makes it possible to guarantee a pressure of at least 15 bars, advantageously of at least 20 bars, and this without using propellant gas.
• the device comprises a body 101 containing a reservoir 100, on which a pump as described above is mounted, by means of the fixing ring 4.
• the reservoir 100 is preferably without air intake.
• a deformable bag 105 is fixed inside said reservoir 100, said bag containing the fluid product and deforming as the doses dispensed.
• the bag can be filled under vacuum. This implementation guarantees the delivery of almost all of the product contained in the pocket, it allows actuation of the device in any orientation, and it avoids any risk of contamination of the fluid product contained in the pocket.
• a follower piston in the reservoir 100.
• a micro-hole nozzle 200 is arranged in a dispensing nozzle 1 10 fixed to the body 101.
• This distribution nozzle 1 10 can be for example a mouthpiece.
• the fluid expelled by the pump strikes a plate pierced with a plurality of micro-holes, which generates the atomization of the fluid.
• the microholes of the nozzle 200 have a diameter of less than 5 ⁇ m, preferably less than 2 ⁇ m.
• a filter 150 is interposed between the outlet of the pump and the nozzle 200.
• This filter serves to filter the impurities which could be transported by the fluid when it passes through the various plastic parts. Indeed, there is always a risk that particles are generated during the manufacturing and assembly processes, with the risk of plugging the micro-holes of the nozzle.
• the body 101 comprises a lateral actuation arm 160, which enables the pump to be actuated by a lateral actuation.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Details Of Reciprocating Pumps (AREA)
• Reciprocating Pumps (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67810868

Family Applications (1)

Country Status (7)

Family Cites Families (16)

• 2019
  • 2019-05-14 FR FR1905010A patent/FR3096090B1/fr active Active
• 2020
  • 2020-05-11 US US17/610,591 patent/US20220235760A1/en active Pending
  • 2020-05-11 BR BR112021021717A patent/BR112021021717A2/pt unknown
  • 2020-05-11 CN CN202080035173.0A patent/CN113906213B/zh active Active
  • 2020-05-11 JP JP2021567801A patent/JP2022533585A/ja active Pending
  • 2020-05-11 WO PCT/FR2020/050764 patent/WO2020229758A1/fr active Search and Examination
  • 2020-05-11 EP EP20740688.5A patent/EP3969750A1/de active Pending

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