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EP3969751A1 - Method for assembling a high-pressure precompression pump - Google Patents

Method for assembling a high-pressure precompression pump

Info

Publication number
EP3969751A1
EP3969751A1 EP20740689.3A EP20740689A EP3969751A1 EP 3969751 A1 EP3969751 A1 EP 3969751A1 EP 20740689 A EP20740689 A EP 20740689A EP 3969751 A1 EP3969751 A1 EP 3969751A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
pump
valve element
spring
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20740689.3A
Other languages
German (de)
French (fr)
Other versions
EP3969751B1 (en
Inventor
Matthieu Baillet
Ludovic Petit
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.)
Aptar France SAS
Original Assignee
Aptar France SAS
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 Aptar France SAS filed Critical Aptar France SAS
Publication of EP3969751A1 publication Critical patent/EP3969751A1/en
Application granted granted Critical
Publication of EP3969751B1 publication Critical patent/EP3969751B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • 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
    • 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
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/143—Sealing provided on the piston
    • 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
    • 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
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • 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
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring

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 method for assembling a fluid dispenser pump, comprising the following steps:
  • a pump body comprising a pump chamber
  • said method comprising the following steps:
  • said sleeve is welded to said pump body by a sealed weld, in particular an ultrasonic weld.
  • said sealed weld is made between two respective radial flanges of said pump body and of said sleeve.
  • the sealing lips of said piston, of said outlet valve element and of said inlet valve element are oriented in the direction opposite to their respective insertion direction, so that said sealing lips are not damaged. during their assembly.
  • said step of inserting said spring and said inlet valve element into said sleeve of reduced diameter is carried out before said step of inserting said piston and said outlet valve element into said sleeve.
  • a subject of the present invention is also a fluid dispenser device assembled by a method as described above.
  • 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.
  • FIGs 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 fixing ring 4 for example crimpable, screwable or snap-on, makes it possible to fix the pump on a tank.
  • 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, during actuation of the pump is compressed by the movement of the inlet valve member 10 under the effect of the 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 by means 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 area S, which corresponds to the outer diameter of the sleeve 9 around which the valve member 10 will slide upon actuation, is typically 18.8 mm 2 (the outer 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-fit, snap-fit, screw, 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. In this way, 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 precompression 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 far superior to traditional standard pumps and even superior to 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 operation of the pump is illustrated in Figures 6 to 9.
  • 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 filling of the bag can be carried out 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)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Compressor (AREA)

Abstract

The invention relates to a method for assembling a fluid product dispensing pump, comprising the following steps: - providing a piston (1) secured to an actuation rod (2); - providing a pump body (3) having a pump chamber (5); - providing a sleeve (50) which is advantageously secured to a fixing ring (4); - providing an outlet valve element (39) which slides during actuation in a sealed manner in the pump chamber (5); - providing an inlet valve element (10) which slides in a sleeve (9) of the pump body (3), said sleeve (9) having a reduced diameter; - providing a spring (20); said method comprising the following steps: - fixing said outlet valve element (39) in said piston (1); - inserting said piston (1) and said outlet valve element (39) into said sleeve (50), said insertion being carried out from the bottom in the direction of flow of the fluid during its expulsion; - inserting said spring (20) and said inlet valve element (10) into said sleeve (9) of reduced diameter, said insertion being carried out from the top in the direction opposite to the flow of the fluid during its expulsion, so as to wedge said spring (20) between the bottom of said sleeve (9) and said inlet valve element; - inserting said sleeve (50) into said pump body (3), said insertion being carried out from the top in the direction opposite to the flow of the fluid during its expulsion.

Description

Procédé d'assemblage d'une pompe à Method of assembling a pump
précompression haute pression high pressure precompression
La présente invention concerne un dispositif de distribution de produit fluide comportant une buse de pulvérisation pourvue de plusieurs orifices de distribution et une pompe pour distribuer des quantités dosées de produit fluide. Plus particulièrement, la pompe est une pompe à précompression dans laquelle la distribution du produit fluide est réalisée à une pression élevée d'au moins 15 bars. La présente invention concerne également le procédé d'assemblage d'une telle pompe. 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.
Des dispositifs de distribution de produit fluide comportant des buses de distribution pourvues d'une pluralité d'orifices ou trous de distribution sont connus notamment des documents EP1878507 et WO2018100321. Dans ces documents, le diamètre des trous est généralement compris entre 8 et 20 pm. Dans le document EP1878507, la buse est associée à une pompe à précompression délivrant le produit fluide à la buse à une pression inférieure à 7 bars. Dans le document WO2018100321 , la buse est associée soit à une pompe dont la pression est comprise entre 2 et 7 bars, soit à une valve pressurisée fonctionnant avec un gaz propulseur dont la pression est comprise entre 6 et 13 bars. Selon la configuration de la buse, notamment pour des trous de diamètre inférieur à 5 pm, ces pressions peuvent s'avérer insuffisantes pour assurer un fonctionnement optimal du dispositif. Par ailleurs, il peut être souhaitable d'utiliser une pompe à précompression afin d'éviter les gaz propulseurs des valves, potentiellement nocifs pour l'utilisateur et/ou l'environnement. Les documents EP1698399, WO2015194962 et Fluid dispensing devices comprising dispensing nozzles provided with a plurality of dispensing orifices or holes are known in particular from documents EP1878507 and WO2018100321. In these documents, the diameter of the holes is generally between 8 and 20 μm. In document EP1878507, the nozzle is associated with a precompression pump delivering the fluid to the nozzle at a pressure below 7 bars. In document WO2018100321, 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. Depending on the configuration of the nozzle, in particular for holes with a diameter of less than 5 μm, these pressures may prove to be insufficient to ensure optimum operation of the device. Furthermore, it may be desirable to use a precompression pump in order to avoid the propellant gases from the valves, which are potentially harmful to the user and / or the environment. Documents EP1698399, WO2015194962 and
WO2018219798 décrivent d'autres exemples de buses à micro-trous. WO2018219798 describe other examples of micro-hole nozzles.
Les documents WO2014125216, W00102100, WO8704373 et EP0265270 divulguent des pompes dans lesquelles la distribution du produit fluide est indépendante de la vitesse et/ou force d'actionnement de l'utilisateur. Lors de l’actionnement de la pompe, un ressort est comprimé sous l’effet de la pression créée à l’intérieur de la chambre de pompe, ledit ressort étant libéré en fin d’actionnement après ouverture d’un clapet de sortie, de sorte que la dose de produit contenue dans la chambre de pompe est expulsée par ledit ressort, indépendamment de la vitesse d’actionnement de l’utilisateur. Typiquement, ces pompes délivrent une pression d'environ 6-7 bars. Documents WO2014125216, W00102100, WO8704373 and EP0265270 disclose pumps in which the distribution of the fluid product is independent of the speed and / or actuation force of the user. When the pump is actuated, a spring is compressed under the effect of the pressure created inside the pump chamber, said spring being released at the end of actuation after opening an outlet valve, so that the dose of product contained in the pump chamber is expelled by said spring, independently of the user's actuation speed. Typically, these pumps deliver a pressure of around 6-7 bar.
La présente invention a pour but de fournir un dispositif et une pompe qui ne reproduisent pas les inconvénients susmentionnés. The object of the present invention is to provide a device and a pump which do not reproduce the aforementioned drawbacks.
La présente invention a notamment pour but de fournir un dispositif de distribution de produit fluide permettant d'associer une pompe à précompression à actionnement manuel délivrant une pression élevée avec une buse de distribution pourvue de plusieurs orifices de distribution. 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.
La présente invention a aussi pour but de fournir une pompe qui délivre le produit fluide à une pression supérieure comparée aux pompes traditionnelles. Another object of the present invention is to provide a pump which delivers the fluid product at a higher pressure compared to traditional pumps.
La présente invention a également pour but de fournir une telle pompe qui soit simple et facile à fabriquer et à assembler, et fiable dans son utilisation. 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.
La présente invention a également pour but de fournir une telle pompe qui assure une distribution totale et reproductible du contenu de la chambre de pompe à chaque actionnement, indépendamment de la vitesse d’actionnement de l’utilisateur. 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.
La présente invention a également pour but de fournir un procédé d'assemblage d'une telle pompe qui permet d'améliorer la fiabilité de la pompe pendant le stockage et en utilisation, en améliorant notamment l'intégrité des pièces soumises à une pression élevée lors de l'actionnement. 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.
La présente invention a donc pour objet un procédé d'assemblage d'une pompe de distribution de produit fluide, comportant les étapes suivantes: The present invention therefore relates to a method for assembling a fluid dispenser pump, comprising the following steps:
- fournir un piston solidaire d'une tige d'actionnement; - Provide a piston integral with an actuating rod;
- fournir un corps de pompe comprenant une chambre de pompe; - Provide a pump body comprising a pump chamber;
- fournir un manchon, avantageusement solidaire d'une bague de fixation; - Provide a sleeve, advantageously integral with a fixing ring;
- fournir un élément de clapet de sortie coulissant lors de l’actionnement de manière étanche dans la chambre de pompe; - provide a sliding outlet valve element when actuated in a sealed manner in the pump chamber;
- fournir un élément de clapet d'entrée coulissant dans un manchon du corps de pompe, ledit manchon ayant un diamètre réduit; - fournir un ressort; - providing an inlet valve element sliding in a sleeve of the pump body, said sleeve having a reduced diameter; - provide a spring;
ledit procédé comportant les étapes suivantes: said method comprising the following steps:
- fixer ledit élément de clapet de sortie dans ledit piston; - fixing said outlet valve element in said piston;
- insérer ledit piston et ledit élément de clapet de sortie dans ledit manchon, ladite insertion étant réalisée par en-dessous, dans le sens d'écoulement du fluide lors de son expulsion; - inserting said piston and said outlet valve element into said sleeve, said insertion being carried out from below, in the direction of flow of the fluid during its expulsion;
- insérer ledit ressort et ledit élément de clapet d'entrée dans ledit manchon de diamètre réduit, ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion, de manière à coincer ledit ressort entre le fond dudit manchon et ledit élément de clapet d'entrée; - inserting said spring and said inlet valve element into said sleeve of reduced diameter, said insertion being made from above, in the direction opposite to the flow of the fluid during its expulsion, so as to wedge said spring between the bottom of said sleeve and said inlet valve member;
- insérer ledit manchon dans ledit corps de pompe, ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion. - inserting said sleeve into said pump body, said insertion being performed from above, in the direction opposite to the flow of the fluid during its expulsion.
Avantageusement, après son insertion, ledit manchon est soudé audit corps de pompe par une soudure étanche, notamment une soudure à ultrason. Advantageously, after its insertion, said sleeve is welded to said pump body by a sealed weld, in particular an ultrasonic weld.
Avantageusement, ladite soudure étanche est réalisée entre deux brides radiales respectives dudit corps de pompe et dudit manchon. Advantageously, said sealed weld is made between two respective radial flanges of said pump body and of said sleeve.
Avantageusement, les lèvres d'étanchéité dudit piston, dudit élément de clapet de sortie et dudit élément de clapet d'entrée sont orientées dans le sens opposé à leur sens d'insertion respectif, de sorte que lesdites lèvres d'étanchéité ne sont pas abîmées lors de leur assemblage. Advantageously, the sealing lips of said piston, of said outlet valve element and of said inlet valve element are oriented in the direction opposite to their respective insertion direction, so that said sealing lips are not damaged. during their assembly.
Avantageusement, ladite étape d'insérer ledit ressort et ledit élément de clapet d'entrée dans ledit manchon de diamètre réduit est réalisée avant ladite étape d'insérer ledit piston et ledit élément de clapet de sortie dans ledit manchon. Advantageously, said step of inserting said spring and said inlet valve element into said sleeve of reduced diameter is carried out before said step of inserting said piston and said outlet valve element into said sleeve.
La présente invention a aussi pour objet un dispositif de distribution de produit fluide assemblée par un procédé tel que décrit ci-dessus. A subject of the present invention is also a fluid dispenser device assembled by a method as described above.
Ces caractéristiques et avantages et d’autres de la présente invention apparaîtront plus clairement à partir de la description détaillée suivante, faite en référence aux dessins joints donnés à titre d’exemples non-limitatifs, sur lesquels : - la figure 1 est une vue schématique en section transversale d’une pompe selon l'art antérieur, en position de repos, These characteristics and advantages and others of the present invention will emerge more clearly from the following detailed description, made with reference to the accompanying drawings given by way of non-limiting examples, in which: - Figure 1 is a schematic cross-sectional view of a pump according to the prior art, in the rest position,
- la figure 2 est une vue schématique partielle en section transversale de la pompe de la figure 1 en cours d'assemblage du piston haut, - Figure 2 is a partial schematic view in cross section of the pump of Figure 1 during assembly of the top piston,
- la figure 3 est une vue schématique en section transversale d’un dispositif de distribution de produit fluide selon un mode de réalisation avantageux, - Figure 3 is a schematic cross-sectional view of a fluid dispenser device according to an advantageous embodiment,
- la figure 4 est une vue de détail agrandie en section transversale d'une partie de la pompe représentée sur la figure 3, - Figure 4 is an enlarged detail view in cross section of a part of the pump shown in Figure 3,
- la figure 5 est une vue de détail agrandie en perspective d'une autre partie de la pompe représentée sur la figure 3, - Figure 5 is an enlarged perspective detail view of another part of the pump shown in Figure 3,
- les figures 6 à 9 sont des vues schématiques en section transversale d’une pompe selon un premier mode de réalisation avantageux, respectivement en position de repos, en début de course d’actionnement, en cours de course d’actionnement et en fin de course d'actionnement, - Figures 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,
- les figures 10 et 1 1 sont des vues schématiques en section transversale d’une pompe selon une variante de réalisation avantageuse de la présente invention, respectivement en position de repos et en fin de course d'actionnement, - Figures 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,
- les figures 12 et 13 sont des vues schématiques partielles en section transversale de la pompe de la figure 6, respectivement en cours et en fin d'assemblage du piston haut, et - Figures 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
- la figure 14 est une vue schématique partielle en section transversale de la pompe de la figure 6 en cours d'assemblage du piston bas. - Figure 14 is a partial schematic view in cross section of the pump of Figure 6 during assembly of the low piston.
Les différents aspects de la présente invention vont être décrits en référence à plusieurs variantes de réalisation. Il est toutefois entendu que la présente invention n’est pas limitée par les modes de réalisation représentés sur les dessins. The various aspects of the present invention will be described with reference to several variant embodiments. It is understood, however, that the present invention is not limited by the embodiments shown in the drawings.
Les figures 1 et 2 illustrent une pompe de l'art antérieur, selon le document WO2014125216. En référence aux figures 1 et 2, cette pompe de l'art antérieur comporte un corps de pompe 3 dans lequel coulisse un piston 1 solidaire d’une tige d’actionnement 2 sur laquelle l’utilisateur appuie pour actionner la pompe. Le piston 1 coulisse dans une chambre de pompe 5 définie dans le corps de pompe 3 entre un clapet d’entrée 1 1 et un clapet de sortie 12. Une bague de fixation 4, par exemple sertissable, vissable ou encliquetable, permet de fixer la pompe sur un réservoir. Figures 1 and 2 illustrate a pump of the prior art, according to document WO2014125216. Referring to Figures 1 and 2, 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 fixing ring 4, for example crimpable, screwable or snap-on, makes it possible to fix the pump on a tank.
Le clapet d’entrée 1 1 , ouvert en position de repos de la pompe, comme visible sur la figure 1 , est formé par un élément de clapet d’entrée 10 déplaçable dans le corps de pompe 3 pendant l’actionnement de la pompe et adapté à coopérer avec une partie du corps de pompe 3 en début d’actionnement de la pompe pour fermer ledit clapet d’entrée 1 1 . Ledit élément de clapet d’entrée 10 est réalisé sous la forme d’un cylindre creux fermé d’un côté par une paroi de fond, le bord de l’extrémité ouverte dudit cylindre creux coopérant de manière étanche dès le début de l’actionnement de la pompe avec un cylindre 9 du corps de pompe 3 pour fermer le clapet d’entrée 1 1 . Un ressort 20 s’appuie d’une part sur une paroi de fond de l’élément de clapet d’entrée 10 et d’autre part sur une partie du corps de pompe 3. 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.
Le clapet de sortie 12 comporte un élément de clapet de sortie 39, avantageusement formé par la lèvre inférieure du piston 1 , et est réalisé de telle sorte que, lors de l’actionnement de la pompe, il n’est ouvert qu’en fin d’actionnement de la pompe pour permettre l’expulsion du produit contenu dans la chambre de pompe. Cette ouverture est réalisée, au niveau de moyens de passage formés au niveau d’un épaulement interne radial 40 du corps de pompe. L’objectif desdits moyens de passage 40 est de former au moins un passage de fluide lorsque l’élément de clapet de sortie 39, qui pendant toute la course d’actionnement de la pompe coopère de manière étanche avec le corps de pompe 3, vient en fin de course d’actionnement au niveau desdits moyens de passage 40. 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.
L'expulsion du produit contenu dans la chambre de pompe 5 est réalisée indépendamment de la vitesse d’actionnement exercée par l’utilisateur. Pour ce faire, l’élément de clapet d’entrée 10 coopère avec le ressort 20 qui, lors de l’actionnement de la pompe, est comprimé par le déplacement de l’élément de clapet d’entrée 10 sous l’effet de la pression créée dans la chambre de pompe. En fin de course d’actionnement de la pompe, lorsque le clapet de sortie 12 est ouvert, ledit ressort comprimé 20 va être brusquement libéré, de sorte que le produit contenu dans la chambre de pompe est expulsé par l’intermédiaire dudit ressort. Avantageusement, ledit ressort 20 du clapet d’entrée 1 1 agit aussi en tant que ressort de rappel de la pompe, ramenant ainsi le piston 1 dans sa position de repos après expulsion du produit. The expulsion of the product contained in the pump chamber 5 is carried out independently of the actuation speed exerted by the user. To do this, the inlet valve element 10 cooperates with the spring 20 which, during actuation of the pump is compressed by the movement of the inlet valve member 10 under the effect of the pressure created in the pump chamber. 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 by means of said spring. Advantageously, 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.
La pompe des figures 1 et 2 comporte donc deux pistons, d'une part le piston 1 , dont une partie définit le clapet de sortie, et d'autre part l'élément de clapet d'entrée 10 définissant le clapet d'entrée, et qui lors de l'actionnement agit comme un piston contre la surface externe du cylindre 9 du corps de pompe 3. 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.
Dans la figure 2, on voit que lors de l'assemblage, les deux pistons sont assemblés dans le corps par au-dessus. Ainsi, la lèvre inférieure 39 du piston 1 , qui forme élément de clapet de sortie, vient buter contre l'entrée du corps de pompe 3, ce qui peut fragiliser cette lèvre. La lèvre 39 étant orientée axialement vers le bas dans la position de la figure 2, c'est forcément la partie d'extrémité radialement externe qui réalise l'étanchéité qui vient en contact du corps de pompe lors de l'assemblage. Selon la force avec laquelle cette pièce est assemblée dans le corps de pompe, son intégrité peut être altérée, ce qui risque de diminuer ses capacités d'étanchéité, en particulier à des hautes pressions. In figure 2, we see that during assembly, the two pistons are assembled in the body from above. Thus, the lower lip 39 of the piston 1, which forms an outlet valve element, abuts against the inlet of the pump body 3, which can weaken this lip. The lip 39 being oriented axially downwards in the position of FIG. 2, it is necessarily the radially outer end part which produces the seal which comes into contact with the pump body during assembly. Depending on the force with which this part is assembled in the pump body, its integrity may be impaired, which risks reducing its sealing capacities, in particular at high pressures.
De même, l'élément de clapet d'entrée 10 est également assemblé autour du manchon 9 avec sa lèvre d'étanchéité qui vient percuter le bord supérieur dudit manchon. Ici aussi, il y a un risque d'abimer la surface d'étanchéité de cette lèvre, et donc d'altérer les performances d'étanchéité dudit élément de clapet d'entrée. Likewise, the inlet valve element 10 is also assembled around the sleeve 9 with its sealing lip which strikes the upper edge of said sleeve. Here too, there is a risk of damaging the sealing surface of this lip, and therefore of impairing the sealing performance of said inlet valve element.
Cette pompe de l'art antérieur représentée sur les figures 1 et 2 délivre typiquement une pression d'environ 7 bars. Cette pression P est égale à la force F du ressort divisée par la surface S sur laquelle elle s'applique, selon la formule P = F/S. Dans l'exemple de la pompe des figures 1 et 2, le ressort 20 a typiquement une force F de 13 N, et la surface S, qui correspond au diamètre extérieur du manchon 9 autour duquel l'élément de clapet 10 va coulisser lors de l'actionnement, est typiquement de 18,8 mm2 (le diamètre externe du manchon 9 étant typiquement de 4,9 mm). La pression P est donc d'env. 7 bars. En modifiant le ressort 20, par exemple en utilisant un ressort avec une force de 25 N, on pourrait atteindre une pression d'env. 13 bars. Néanmoins, ceci est peu envisageable pour plusieurs raisons. D'une part, en raison de ses dimensions, l'actionnement d'un tel ressort de 25 N dans la pompe de la figure 1 pourrait devenir difficile, notamment pour des utilisateurs âgés ou faibles. D'autre part, une telle augmentation de la pression risquerait de ne pas être supportée par les deux pistons, dont les lèvres d'étanchéité sont susceptibles d'être abimées lors de l'assemblage de la pompe (cf. ci-dessus). Les risques de fuites et de dysfonctionnement seraient trop importants, empêchant une distribution fiable de doses complètes de produit fluide à chaque actionnement. This pump of the prior art shown in Figures 1 and 2 typically delivers a pressure of about 7 bars. This pressure P is equal to the force F of the spring divided by the surface S on which it is applied, according to the formula P = F / S. In the example of the pump in Figures 1 and 2, the spring 20 typically has a force F of 13 N, and the area S, which corresponds to the outer diameter of the sleeve 9 around which the valve member 10 will slide upon actuation, is typically 18.8 mm 2 (the outer diameter of the sleeve 9 being typically 4.9 mm). The pressure P is therefore approx. 7 bars. By modifying the spring 20, for example using a spring with a force of 25 N, a pressure of approx. 13 bars. However, this is unlikely for several reasons. On the one hand, because of its dimensions, the actuation of such a 25 N spring in the pump of FIG. 1 could become difficult, in particular for elderly or weak users. On the other hand, such an increase in pressure would run the risk of not being supported by the two pistons, the sealing lips of which are liable to be damaged during assembly of the pump (see above). The risks of leaks and malfunction would be too great, preventing reliable distribution of complete doses of fluid on each actuation.
La présente invention a pour objet notamment une pompe à précompression adaptée à délivrer une pression d'au moins 15 bars, avantageusement d'au moins 20 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.
Pour ce faire, la pompe de l'art antérieur des figures 1 et 2 est modifiée tant structurellement que fonctionnellement comme cela sera décrit ci-après. Les parties identiques ou similaires sont identifiées sur les figures 3 à 14 par les mêmes références numériques. To do this, the pump of the prior art of Figures 1 and 2 is modified both structurally and functionally as will be described below. Identical or similar parts are identified in Figures 3 to 14 by the same reference numerals.
Comme dans la pompe des figures 1 et 2, la pompe selon l'invention comporte un corps de pompe 3 dans lequel coulisse un piston 1 solidaire d’une tige d’actionnement 2 sur laquelle l’utilisateur appuie pour actionner la pompe. Le piston 1 coulisse dans une chambre de pompe 5 définie dans le corps de pompe 3 entre un clapet d’entrée 1 1 et un clapet de sortie 12. Une bague de fixation 4, par exemple sertissable, vissable ou encliquetable, permet de fixer la pompe sur un réservoir. As in the pump of Figures 1 and 2, 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.
La paroi latérale de la chambre de pompe 5 est renforcée par l'insertion d'un manchon 50 dans le corps de pompe 3. Ce manchon 50 peut être solidaire, par exemple d'une pièce, avec la bague de fixation 4. Ce manchon 50 forme ainsi une double paroi dans la chambre de pompe 5, ce qui permet d'éviter une déformation de la paroi latérale interne de la chambre de pompe 5 à cause de la forte pression créée par la pompe lors de l'actionnement. Ce manchon 50 comporte l'épaulement radial qui définit le clapet de sortie 40. Avantageusement, comme visible sur la figure 4, pour éviter toutes fuites entre le manchon 50 et le corps de pompe 3, on prévoit une soudure étanche 55, par exemple par ultrasons, de préférence entre deux brides radiales respectivement dudit corps de pompe 3 et de ladite bague de fixation 4 qui incorpore le manchon 50. 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. Advantageously, as can be seen in FIG. 4, to prevent any leaks between the sleeve 50 and the pump body 3, 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.
De même, le manchon 9, qui coopère avec l'élément de clapet d'entrée 10, prolonge axialement le corps de pompe 3 vers le bas dans l'orientation des figures 6 à 14 et contient ledit élément de clapet d'entrée 10 et ledit ressort 20. L'élément de clapet d'entrée 10 est plein et comporte des lèvres d'étanchéité périphériques qui s'étendent radialement vers l'extérieur. En position de repos, visible notamment sur la figure 6, ces lèvres d'étanchéité ne coopèrent pas de manière étanche avec le manchon 9, de sorte que le clapet d'entrée 1 1 est ouvert. Lors de l'actionnement, l'élément de clapet 10 va coulisser axialement dans le manchon 9 en comprimant le ressort 20. Ce coulissement est réalisé de manière étanche, les lèvres d'étanchéité de l'élément de clapet 10 coopérant de manière étanche avec le manchon 9. Likewise, the sleeve 9, which cooperates with the inlet valve element 10, axially extends the pump body 3 downwards in the orientation of Figures 6 to 14 and contains said inlet valve element 10 and said spring 20. 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. During actuation, 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.
Le manchon 9 a un diamètre réduit par rapport au corps de pompe 3. Il comporte avantageusement des nervures de renforcements externes 90, visibles notamment sur les figures 5 et 7 à 9. Cette mise en oeuvre du manchon 9 permet de diminuer ses dimensions radiales, avec typiquement un diamètre interne inférieur au diamètre externe du manchon 9 de la pompe de la figure 1 . Ainsi par exemple, le manchon 9 de la pompe de la figure 6 pourrait avoir un diamètre inférieur à 4,2 mm, avantageusement inférieur à 4 mm, de préférence 3,9 mm. 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. Thus, for example, 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.
Le piston 1 et l'élément de clapet de sortie 39 pourrait être réalisés d'une seule pièce monobloc, mais de préférence, comme représenté sur les figures 3 et 6 à 14, l'élément de clapet de sortie 39 est formé par une pièce séparée qui vient se fixer dans le piston 1 . Cette fixation peut se faire par emmanchement à force, encliquetage, vissage, ou toute autre fixation appropriée. Les lèvres d'étanchéité du piston 1 et de l'élément de clapet de sortie 39 sont orientés dans la même direction, vers le bas dans la position de la figure 6. 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-fit, snap-fit, screw, 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.
Une des caractéristiques de la pompe selon l'invention est l'assemblage du piston 1 et de l'élément de clapet de sortie 39 dans le manchon 50. Contrairement à la pompe des figures 1 et 2, cet assemblage se fait par le bas, comme visible sur les figures 12 et 13. Ainsi, les lèvres d'étanchéité ne sont pas fragilisées par cet assemblage, lesdites lèvres étant orientés en sens inverse du sens d'assemblage. De cette manière, la déformation élastique des lèvres d'étanchéité n'est pas réalisée par contact frontal de la surface radialement externe des lèvres contre le manchon 50 de la chambre de pompe 5, mais au contraire, les lèvres sont progressivement déformées radialement vers l'intérieur, de sorte que les surfaces d'étanchéité ne subissent aucune contrainte brutale qui risquerait d'altérer leurs capacité d'étanchéité. 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. In this way, 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.
L'élément de clapet d'entrée 10 comporte des lèvres d'étanchéité orientées en sens inverse des lèvres d'étanchéité du piston 1 et de l'élément de clapet de sortie 39. Comme visible sur la figure 14, ledit élément de clapet d'entrée 10 est assemblée dans le manchon 9 du corps de pompe par au- dessus. De cette manière, ses lèvres d'étanchéité ne sont pas non plus abîmées lors de l'assemblage. 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.
La pompe selon l'invention améliore donc sensiblement les capacités d'étanchéité des différentes pièces étanches, à savoir le piston 1 , l'élément de clapet de sortie 39 et l'élément de clapet d'entrée 10. 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.
Ainsi, il devient possible d'utiliser un ressort ayant une force supérieure, typiquement au moins 20 N, avantageusement 25 N. Thus, it becomes possible to use a spring having a greater force, typically at least 20 N, advantageously 25 N.
Avec un diamètre interne du manchon 9 de 3,9 mm, soit une surface de 12 mm2, et un ressort de 20 N, on arrive à une pression P d'environ 16,5 bars. Avec un ressort de 25 N, la pression monte à environ 21 bars. With an internal diameter of the sleeve 9 of 3.9 mm, ie a surface area of 12 mm 2 , and a spring of 20 N, a pressure P of approximately 16.5 bars is obtained. With a 25 N spring, the pressure rises to approximately 21 bars.
Ainsi, la présente invention permet de fournir une pompe à précompression de type standard mais capable de distribuer le produit fluide à une pression d'au moins 15 bars, avantageusement environ 20 bars, ce qui est bien supérieur aux pompes standards traditionnelles et même supérieur aux valves fonctionnant avec un gaz propulseur. Thus, the present invention makes it possible to provide a precompression 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 far superior to traditional standard pumps and even superior to valves operating with propellant gas.
L'effort d'actionnement d'une telle pompe avec un ressort à 25 N et la surface S de 12 mm2 est inférieur à 60 N, avantageusement d'environ 50 N, ce qui reste acceptable. 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.
La présente invention fournit aussi un procédé d'assemblage avantageux. Ce procédé d'assemblage comporte les étapes suivantes: The present invention also provides an advantageous assembly method. This assembly process comprises the following steps:
- fournir le piston 1 solidaire de la tige d'actionnement 2; - provide the piston 1 integral with the actuating rod 2;
- fournir le corps de pompe 3 comprenant la chambre de pompe 5; - Provide the pump body 3 comprising the pump chamber 5;
- fournir le manchon 50, avantageusement solidaire de la bague de fixation 4; - Provide the sleeve 50, advantageously integral with the fixing ring 4;
- fournir l'élément de clapet de sortie 39 coulissant lors de l’actionnement de manière étanche dans la chambre de pompe 5; - providing the outlet valve element 39 which slides when actuated in a sealed manner in the pump chamber 5;
- fournir l'élément de clapet d'entrée 10 coulissant dans le manchon 9 du corps de pompe 3, ledit manchon 9 ayant un diamètre réduit; - providing the inlet valve element 10 sliding in the sleeve 9 of the pump body 3, said sleeve 9 having a reduced diameter;
- fournir le ressort 20. - provide the spring 20.
Le procédé comporte en outre les étapes suivantes: The method further comprises the following steps:
- fixer l'élément de clapet de sortie 39 dans le piston 1 ; - fix the outlet valve element 39 in the piston 1;
- insérer le piston 1 et l'élément de clapet de sortie 39 dans le manchon 50, ladite insertion étant réalisée par en-dessous, dans le sens d'écoulement du fluide lors de son expulsion; - Inserting the piston 1 and the outlet valve element 39 into the sleeve 50, said insertion being performed from below, in the direction of flow of the fluid during its expulsion;
- insérer le ressort 20 et l'élément de clapet d'entrée 10 dans le manchon 9 de diamètre réduit, ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion, de manière à coincer le ressort 20 entre le fond du manchon 9 et l'élément de clapet d'entrée 10; - inserting the spring 20 and the inlet valve element 10 into the sleeve 9 of reduced diameter, said insertion being made from above, in the direction opposite to the flow of the fluid during its expulsion, so as to wedging the spring 20 between the bottom of the sleeve 9 and the inlet valve member 10;
- insérer le manchon 50 dans le corps de pompe 3, ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion. - Inserting the sleeve 50 into the pump body 3, said insertion being made from above, in the direction opposite to the flow of the fluid during its expulsion.
Eventuellement, l'étape d'insérer le ressort 20 et l'élément de clapet d'entrée 10 dans le manchon 9 de diamètre réduit peut être réalisée avant l'étape d'insérer le piston 1 et l'élément de clapet de sortie 39 dans le manchon 50. Le fonctionnement de la pompe est illustré sur les figures 6 à 9. Optionally, 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 operation of the pump is illustrated in Figures 6 to 9.
La position de repos est visible sur la figure 6, avec le clapet d'entrée 1 1 ouvert et le clapet des sortie 12 fermé. The rest position is visible in Figure 6, with the inlet valve 1 1 open and the outlet valve 12 closed.
En début d'actionnement, visible sur la figure 7, le clapet d'entrée 1 1 se ferme, par coopération étanche entre les lèvres de l'élément de clapet d'entrée 10 et la surface cylindrique interne du manchon 9, alors que le clapet de sortie 12 reste fermé. Le ressort 20 se comprime sous l'effet de l'élément de clapet d'entrée 10 qui coulisse dans le manchon 9. Le manchon 9 ayant un diamètre réduit par rapport au manchon 50 disposé dans le corps de pompe 3, et le fluide contenu dans la chambre de pompe 5 étant incompressible, cette compression du ressort 20 se produit relativement aisément, malgré la force élevée dudit ressort 20. At the start of actuation, visible in Figure 7, 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.
Lorsqu'on approche de la fin d'actionnement, comme visible sur la figure 8, l'élément de clapet de sortie 39 approche de l'épaulement 40 du clapet de sortie, pour ouvrir celui-ci. When approaching the end of actuation, as shown in Figure 8, the outlet valve member 39 approaches the shoulder 40 of the outlet valve, to open the latter.
La figure 9 illustre la position actionnée, avec le clapet de sortie ouvert et donc le contenu de la chambre de pompe 5 qui est expulsé sous l'effet du ressort 20 qui se détend. Le produit fluide est alors expulsé avec une pression d'au moins 15 bars, avantageusement d'au moins 20 bars. 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.
Les figures 10 et 1 1 montrent une variante de réalisation, dans laquelle un second ressort 80 est prévu pour assister l'utilisateur dans son effort d'actionnement, afin de réduire celui-ci. Dans cette variante, le second ressort 80 est avantageusement disposé autour du piston 1 pour le solliciter vers sa position actionnée. Le second ressort 80 agit donc à l'encontre du ressort 20, et par conséquent sa force doit être inférieure à celle du ressort 20. 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. In this variant, 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.
Avec un tel second ressort 80, on pourrait envisager d'utiliser un ressort 20 encore plus puissant, par exemple de force F supérieure à 30 N, avantageusement même supérieur à 35 N, par exemple 38 N, ce qui, pour une surface S de 12 mm2, permettrait d'atteindre des pressions P supérieures à 25 bars, avantageusement supérieures à 30 bars, par exemple 32 bars. With such a second spring 80, one could consider using an even more powerful spring 20, for example with a force F greater than 30 N, advantageously even greater than 35 N, for example 38 N, which, for a surface S of 12 mm 2 , would make it possible to achieve pressures P greater than 25 bars, advantageously greater than 30 bars, for example 32 bars.
Avantageusement, le piston 1 peut être solidaire d'un manchon externe 2' assemblé autour de la tige d'actionnement 2, elle-même solidaire de l'élément de clapet de sortie 39. Cette mise en oeuvre pourrait aussi être adaptée à la variante des figures 6 à 9. Advantageously, 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.
La présente invention a aussi pour objet un dispositif de distribution de produit fluide comportant une pompe telle que décrite ci-dessus, associée à une buse de pulvérisation comportant une pluralité d'orifices de distribution. 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.
L'utilisation d'une buse à micro-trous, comme par exemple celle décrite dans le document WO2018100321 , peut selon la conception de la buse, et notamment si les micro-trous ont un diamètre inférieur à 5 pm, voire inférieur à 2pm, nécessiter un fluide arrivant avec une forte pression, typiquement supérieure à 15 bars. La présente invention permet de garantir une pression d'au moins 15 bars, avantageusement d'au moins 20 bars, et ce sans utiliser de gaz propulseur. The use of a micro-hole nozzle, such as for example that described in document WO2018100321, can depending on the design of the nozzle, and in particular if the micro-holes have a diameter less than 5 μm, or even less than 2 μm, require 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.
Comme visible sur la figure 3, le dispositif comporte un corps 101 contenant un réservoir 100, sur lequel est monté une pompe telle que décrite ci-dessus, au moyen de la bague de fixation 4. As can be seen in FIG. 3, 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.
Le réservoir 100 est de préférence sans reprise d'air. Avantageusement, une poche déformable 105 est fixée à l'intérieur dudit réservoir 100, ladite poche contenant le produit fluide et se déformant au fur et à mesure des doses distribuées. De préférence, le remplissage de la poche peut être réalisé sous vide. Cette mise en oeuvre garantit la délivrance de la quasi-totalité du produit contenu dans la poche, elle permet un actionnement du dispositif dans n'importe quelle orientation, et elle évite tout risque de contamination du produit fluide contenu dans la poche. En variante à la poche, on pourrait aussi utiliser un piston suiveur dans le réservoir 100. The reservoir 100 is preferably without air intake. Advantageously, a deformable bag 105 is fixed inside said reservoir 100, said bag containing the fluid product and deforming as the doses dispensed. Preferably, the filling of the bag can be carried out 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. As an alternative to the pocket, one could also use a follower piston in the reservoir 100.
Eventuellement, on pourrait aussi utiliser un dispositif fonctionnant avec une reprise d'air, auquel cas un filtre serait avantageusement prévu pour filtre l'air d'éventation. Optionally, one could also use a device operating with an air intake, in which case a filter would be advantageously provided to filter the ventilation air.
Une buse à micro-trous 200, dont le fonctionnement ne sera pas plus amplement décrit ci-après, mais qui peut être de tous types connus, tels que décrit par exemple dans les documents EP1878507, WO2018100321 , EP1698399, WO2015194962 ou WO2018219798, est disposée dans un embout de distribution 1 10 fixé au corps 101 . Cet embout de distribution 1 10 peut être par exemple un embout buccal. Typiquement, le fluide expulsé par la pompe percute une plaque percée d'une pluralité de micro-trous, ce qui génère la pulvérisation du fluide. A micro-hole nozzle 200, the operation of which will not be more fully described below, but which can be of any known type, such as described for example in documents EP1878507, WO2018100321, EP1698399, WO2015194962 or WO2018219798, is arranged in a dispensing nozzle 1 10 fixed to the body 101. This distribution nozzle 1 10 can be for example a mouthpiece. Typically, the fluid expelled by the pump strikes a plate pierced with a plurality of micro-holes, which generates the atomization of the fluid.
Les micro-trous de la buse 200 ont un diamètre inférieur à 5 pm, de préférence inférieur à 2 pm. The microholes of the nozzle 200 have a diameter of less than 5 µm, preferably less than 2 µm.
Avantageusement, un filtre 150 est interposé entre la sortie de la pompe et la buse 200. Ce filtre sert à filtrer les impuretés qui pourraient être transportées par le fluide lorsqu’il traverse les différentes pièces plastiques. En effet, il y a toujours un risque que des particules soient générées lors des procédés de fabrication et d'assemblage, avec des risques de bouchage des micro-trous de la buse. Advantageously, 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.
Avantageusement, le corps 101 comporte un bras d'actionnement latéral 160, qui permet d'actionner la pompe par un actionnement latéral. Advantageously, the body 101 comprises a lateral actuation arm 160, which enables the pump to be actuated by a lateral actuation.
Bien entendu, l’invention n’est pas limitée aux exemples de réalisation représentés sur les dessins, et la portée de l’invention est au contraire définie par les revendications annexées. Of course, the invention is not limited to the embodiments shown in the drawings, and the scope of the invention is on the contrary defined by the appended claims.

Claims

Revendications Claims
Procédé d'assemblage d'une pompe de distribution de produit fluide, comportant les étapes suivantes: A method of assembling a fluid dispenser pump, comprising the following steps:
- fournir un piston (1 ) solidaire d'une tige d'actionnement - provide a piston (1) integral with an actuating rod
(2); (2);
- fournir un corps de pompe (3) comprenant une chambre de pompe (5); - providing a pump body (3) comprising a pump chamber (5);
- fournir un manchon (50), avantageusement solidaire d'une bague de fixation (4); - providing a sleeve (50), advantageously integral with a fixing ring (4);
- fournir un élément de clapet de sortie (39) coulissant lors de l’actionnement de manière étanche dans la chambre de pompe (5); - provide an outlet valve element (39) which slides when actuated in a sealed manner in the pump chamber (5);
- fournir un élément de clapet d'entrée (10) coulissant dans un manchon (9) du corps de pompe (3), ledit manchon (9) ayant un diamètre réduit;- providing an inlet valve element (10) sliding in a sleeve (9) of the pump body (3), said sleeve (9) having a reduced diameter;
- fournir un ressort (20); - provide a spring (20);
caractérisé en ce que ledit procédé comporte les étapes suivantes:characterized in that said method comprises the following steps:
- fixer ledit élément de clapet de sortie (39) dans ledit piston (1 ); - fixing said outlet valve element (39) in said piston (1);
- insérer ledit piston (1 ) et ledit élément de clapet de sortie (39) dans ledit manchon (50), ladite insertion étant réalisée par en-dessous, dans le sens d'écoulement du fluide lors de son expulsion; - inserting said piston (1) and said outlet valve element (39) in said sleeve (50), said insertion being carried out from below, in the direction of flow of the fluid during its expulsion;
- insérer ledit ressort (20) et ledit élément de clapet d'entrée (10) dans ledit manchon (9) de diamètre réduit, ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion, de manière à coincer ledit ressort (20) entre le fond dudit manchon (9) et ledit élément de clapet d'entrée; - inserting said spring (20) and said inlet valve element (10) in said sleeve (9) of reduced diameter, said insertion being carried out from above, in the direction opposite to the flow of the fluid during its expelling, so as to wedge said spring (20) between the bottom of said sleeve (9) and said inlet valve member;
- insérer ledit manchon (50) dans ledit corps de pompe (3), ladite insertion étant réalisée par au-dessus, dans le sens opposé à l'écoulement du fluide lors de son expulsion. - inserting said sleeve (50) into said pump body (3), said insertion being made from above, in the direction opposite to the flow of the fluid during its expulsion.
Procédé selon la revendication 1 , dans lequel après son insertion, ledit manchon (50) est soudé audit corps de pompe (3) par une soudure étanche (55), notamment une soudure à ultrason. A method according to claim 1, wherein after its insertion, said sleeve (50) is welded to said pump body (3) by a sealed weld (55), in particular an ultrasonic weld.
3. Procédé selon la revendication 2, dans lequel ladite soudure étanche (55) est réalisée entre deux brides radiales respectives dudit corps de pompe (3) et dudit manchon (50). 3. Method according to claim 2, wherein said sealed weld (55) is made between two respective radial flanges of said pump body (3) and said sleeve (50).
4. Procédé selon l’une quelconque des revendications précédentes, dans lequel des lèvres d'étanchéité dudit piston (1 ), dudit élément de clapet de sortie (39) et dudit élément de clapet d'entrée sont orientées dans le sens opposé à leur sens d'insertion respectif, de sorte que lesdites lèvres d'étanchéité ne sont pas abîmées lors de leur assemblage. A method according to any preceding claim, wherein the sealing lips of said piston (1), said outlet valve member (39) and said inlet valve member are oriented in the direction opposite to their. respective direction of insertion, so that said sealing lips are not damaged during their assembly.
5. Procédé selon l’une quelconque des revendications précédentes, dans lequel ladite étape d'insérer ledit ressort (20) et ledit élément de clapet d'entrée (10) dans ledit manchon (9) de diamètre réduit est réalisée avant ladite étape d'insérer ledit piston (1 ) et ledit élément de clapet de sortie (39) dans ledit manchon (50). A method according to any preceding claim, wherein said step of inserting said spring (20) and said inlet valve member (10) into said reduced diameter sleeve (9) is performed before said step d. inserting said piston (1) and said outlet valve member (39) into said sleeve (50).
EP20740689.3A 2019-05-14 2020-05-11 Method for assembling a high-pressure precompression pump Active EP3969751B1 (en)

Applications Claiming Priority (2)

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FR1905014A FR3096089B1 (en) 2019-05-14 2019-05-14 Method of assembling a high pressure pre-compression pump
PCT/FR2020/050765 WO2020229759A1 (en) 2019-05-14 2020-05-11 Method for assembling a high-pressure precompression pump

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EP (1) EP3969751B1 (en)
JP (1) JP7558200B2 (en)
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US12049884B2 (en) 2024-07-30
EP3969751B1 (en) 2024-05-01
FR3096089A1 (en) 2020-11-20
WO2020229759A1 (en) 2020-11-19
US20220220955A1 (en) 2022-07-14
JP7558200B2 (en) 2024-09-30
CN113825907A (en) 2021-12-21
FR3096089B1 (en) 2022-08-05
BR112021021722A2 (en) 2021-12-21
CN113825907B (en) 2023-06-30
JP2022533075A (en) 2022-07-21

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