EP1706212A1 - Fluid product dispensing pump - Google Patents
Fluid product dispensing pumpInfo
- Publication number
- EP1706212A1 EP1706212A1 EP04816579A EP04816579A EP1706212A1 EP 1706212 A1 EP1706212 A1 EP 1706212A1 EP 04816579 A EP04816579 A EP 04816579A EP 04816579 A EP04816579 A EP 04816579A EP 1706212 A1 EP1706212 A1 EP 1706212A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- differential piston
- fluid
- pusher
- pump chamber
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 1
- 239000008278 cosmetic cream Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3452—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the cooperating elements being movable, e.g. adjustable relative to one another
- B05B1/3457—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the cooperating elements being movable, e.g. adjustable relative to one another in response to liquid pressure
-
- 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
- B05B11/1073—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
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1077—Springs characterised by a particular shape or material
-
- 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
-
- 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
- B05B11/1021—Piston pumps having an outlet valve which is a gate valve
- B05B11/1022—Piston pumps having an outlet valve which is a gate valve actuated by pressure
-
- 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
Definitions
- the present invention relates to a fluid dispenser pump generally intended to be associated with a fluid reservoir to form together a fluid dispenser. It is a dispensing member, the actuation of which is generally carried out manually using a finger of the user.
- the fluid product is distributed in the form of a jet of fine spray droplets, a continuous stream or even a dab of fluid product, particularly in the case of viscous products, such as cosmetic creams.
- Such a fluid dispenser member can in particular be used in the fields of perfumery, cosmetics or even pharmacy to distribute more or less viscous products.
- the present invention relates more particularly, but not exclusively, to a type of dispensing member which is commonly designated by the term "push-pump".
- the dispensing member comprises a pusher not only forming a dispensing orifice but further defining a part of a fluid chamber in which the fluid is selectively pressurized.
- a pump it is a pump chamber.
- a peculiarity of this push-button pump lies in the fact that an internal surface of the push-button, of generally substantially cylindrical shape, serves as a sealed sliding barrel for a piston which moves in sealed contact therein, thereby selectively unmasking the orifice of distribution.
- This piston is generally a piston of the differential type which moves in response to a change in pressure of the fluid inside the chamber. This differential piston is to be distinguished from the main piston, the displacement of which is generated by the actuation of the pusher.
- a differential piston and a main piston displaceable in sealed contact in respective drums.
- the main barrel for the main piston can also be formed by the pusher. This is notably the case in the pump described in document WO 97/23304.
- the pusher comprises a bearing wall on which pressure is exerted using a finger to actuate the pusher.
- the pusher comprises a skirt which extends downwards from the support wall. This skirt forms a first sealed sliding barrel for a differential piston and a second was main for the main piston of the pump.
- the differential piston is dissociated from the main piston.
- the differential piston is biased away from the support wall by a spring which serves both as a return spring and as a precompression spring.
- the sliding barrel of the differential piston is formed with an outlet duct which leads to an attached nozzle in a housing formed in the skirt of the pusher.
- This nozzle forms a dispensing orifice at the level of which the fluid product leaves the dispensing member.
- the housing formed by the skirt is produced with a swirl system which cooperates with the nozzle to drive the fluid product in a swirl movement before exiting through the dispensing orifice.
- This swirl system is conventionally constituted by one or more tangential swirl channels opening into a swirl chamber precisely centered on the dispensing orifice.
- the swirl system is in the form of a recess network inside the housing of the skirt. This recess network is then completed by the attached nozzle which isolates the swirl channels as well as the chamber.
- the sliding barrel of the differential piston is in the form of a cylindrical surface only interrupted at the outlet channel.
- the main piston rises in the main barrel of the pusher, which has the effect of displacing the differential piston by sealed sliding inside the differential barrel.
- the active sealing lip of the differential piston which is in direct contact with the fluid, slides in the lower part of the barrel located under the outlet channel.
- the pump of document WO 97/23304 consists of five essential constituent elements, namely a body intended to be associated with a reservoir of fluid product, the pusher, a ball forming an inlet valve, the differential piston and the nozzle.
- the body forms the main piston.
- Document US-4050 613 is also known which describes a pump comprising a pusher, a body fixedly fixed by a ring on a container opening and a differential piston which slides inside the pusher and on the body in response to a variation. pressure.
- the body, the pusher and the differential piston together form a chamber. When the pressure increases in this chamber, the differential piston moves away from the pusher.
- the inlet valve of the chamber is formed by a valve with a deformable flap which deforms when the chamber is under vacuum. This valve is formed by an insert on the body.
- the object of the present invention is to improve the document pump
- the present invention provides a pump having the characteristics of claim 1, and in particular a differential piston formed in one piece with a movable inlet valve member, which cooperates with an inlet valve seat.
- the inlet valve is formed by a ball or a flap resting on a seat. It is in particular possible to form the movable inlet valve member with the differential piston because the latter moves away from the support wall when the pressure increases in the pump chamber. This contributes to the movable inlet valve member moving towards the inlet valve seat.
- the support wall forms a wall element of the pump chamber.
- the space formed between the differential piston and the support wall is a dead space fulfilling no function.
- the differential piston comprises at least one hole for the passage of fluid product. The through holes extend the pump chamber to the level of the support wall.
- the skirt of the pusher comprises an internal surface forming a sealed sliding barrel, the "distribution" orifice being formed at the level of said sliding barrel, the differential piston comprising at least one sealing lip in sealed sliding contact in said barrel, so as to unmask said dispensing orifice when the differential piston moves away from the support wall.
- the sealing lip of the follower piston moves in the upper part of the barrel located between the dispensing orifice and the support wall. In the aforementioned prior art, it is the opposite.
- the differential piston comprises a plate substantially perpendicular to the actuation axis, said plate being movable away from the support wall when the pressure increases in the pump chamber, said plate comprising a pressure surface disposed opposite the internal surface of the support wall, said plate being traversed by at least one fluid passage hole so that a part of the pump chamber is defined between the bearing wall and the plate, the plate comprising an external periphery which forms at least one sealing lip in tight sliding contact in the skirt of the pusher.
- the differential piston is formed in one piece with the main piston, said main piston comprising a sealing lip in leaktight sliding contact in a main ft. .
- the main piston is formed by a body independent of the differential piston.
- the pump also comprises a body intended to be associated with a fluid reservoir, and a return spring bearing on the one hand on the body and on the other hand on the differential piston .
- the return spring is produced in a single piece by the differential piston or the body.
- the internal surface of the skirt forming the sliding barrel of the isto a is formed with a swirl system centered on the dispensing orifice, said system being produced in a single piece in the skirt of the pusher .
- This characteristic is particularly advantageous in combination with the fact that the differential piston moves away from the support wall when the pressure increases in the pump chamber.
- the internal surfaces of the pusher forming the sliding barrel of the differential piston are very generally made from molded injected plastic. For this, we use a mold made up of several elements. One of these elements in particular forms a pin intended to form the internal surface of the pusher. In the case of the present invention, this spindle must form not only the sliding barrel, but also the swirl system.
- the spindle As the swirl system extends by forming a hollowed out part in the sliding barrel of the differential piston, the spindle must form a negative imprint corresponding which projects outwards. Also, when removing the spindle during demolding, the protruding impression must be forcefully removed. The projecting imprint must therefore come out of the hollowed-out part which it has formed and move over a lower part of the sliding barrel. Since the plastic is flowable, the forceful passage of the protruding impression marks the sliding barrel only very slightly. This is however not excluded. By providing that the differential piston moves away from the support wall, this necessarily means that the sealing lip of the differential piston which is in contact with the fluid moves in the upper part of the barrel located between the swirl and the support wall.
- the differential piston is formed by a piston member which also comprises a valve rod which extends axially centrally away from the pressure surface, said rod cooperating with a valve seat to form the inlet valve.
- the piston member can also comprise a crown which extends concentrically around the valve stem, said crown forming the main piston in the form of a sealing lip.
- - Figure 1 is a vertical cross-sectional view through a dispensing member according to a first embodiment in the idle state and associated with a fluid reservoir shown only partially
- - Figure 2 is a view similar to Figure 1 in the actuated position
- - Figures 3a and 3b are schematic views of the internal surface of the distribution wall formed with a swirl system according to the invention, respectively in the rest and actuated position
- - Figures 4a and 4b are views in vertical cross section through distribution members according to two alternative embodiments.
- the dispensing member of the first embodiment of Figures 1 and 2 is a pump which is shown associated with a container 150 comprising a body 151 internally defining a fluid reservoir 5.
- the body 151 is provided at its upper end with an opening in the form of a neck 153, which is used for fixing the dispensing member of the invention.
- the pump comprises three constituent elements, namely a body 110, a pusher 12O and a piston member 130.
- the dispensing member further comprises spring means in the form of a coil spring 140.
- the body, the pusher and the piston member are preferably made by plastic molding.
- the pump comprises a pump chamber 1.
- the body 110 comprises a fixing ring 111 which cooperates with the neck 153 for fixing the member to the container 150.
- the ring 111 is engaged with the outside of the neck 153.
- the body forms a self-sealing lip 112 in leaktight engagement with the internal wall of the neck 153.
- the body 111 also forms a guide sleeve 114 which can advantageously extend in the extension of the ring 111.
- the end upper part of the guide sleeve 114 is formed with a re-entrant flap 1141.
- the body 110 also forms a crown 113 which extends concentrically inside the guide sleeve 114. Thus, an annular space is formed between the sleeve 114 and the crown 113.
- the crown 113 forms a shoulder at its upper end
- the crown 113 which will serve as a bearing surface for the spring 140.
- the crown 113 is extends upwards by forming a main barrel 117 which internally defines a sealed sliding surface, the function of which will be given below.
- the body also forms a dip tube 115 which extends inside the container 150.
- the dip tube 115 is extended at its upper end by an inlet sleeve 116 which forms an inlet valve profile or seat 1161.
- the dip tube 115 and the sleeve 116 are traversed by an inlet conduit 118.
- the inlet sleeve 116 extends concentrically inside the main barrel 117, so that an annular space is formed between them.
- the body 110 has an axial symmetry of revolution about an axis
- the pusher 120 forms a dispensing head of the dispensing member.
- the pusher 120 comprises a support wall 121 and a peripheral skirt 122 which extends downwards from the external periphery of the support wall.
- the pusher 120 has a general shape of an inverted bucket, the support wall of which forms the bottom and the skirt the cylindrical side wall.
- the skirt is not necessarily cylindrical in shape. It can have tapered or rounded sections.
- the support wall 121 includes an external support surface 1211 which can be pressed using one or more finger (s).
- the bearing wall 121 comprises an internal surface 1212 which advantageously forms an abutment stud 1213.
- the skirt 122 comprises an upper distribution wall 123 and a lower guide wall 124.
- the distribution wall 123 is connected at its upper end at the external periphery of the support wall 121.
- the distribution wall 123 comprises an external surface 1221 and an internal surface 1232.
- This internal surface 1232 is preferably circular cylindrical and defines a barrel sliding as will be seen below.
- the distribution wall 123 is formed with a through distribution orifice 125 which extends from the internal surface to the external surface.
- the distribution orifice 125 can open at the external surface in a diffusion cup 1251.
- the internal wall 1232 of the distribution wall 123 is formed with a swirl system 126 which allows entraining fluid in rotation in the form of a swirl whose eye is centered on the dispensing orifice.
- the distribution wall 123 which is advantageously produced in a single piece with the support wall 121 and the guide wall 124, is traversed by a distribution orifice and comprises an internal surface formed with a swirl system.
- the guide wall 124 comprises a stop bead 141 on its external surface intended to cooperate with the re-entrant flap 1141 of the guide bush 114.
- the guide wall 124 is disposed in the annular formed between the guide bush 114 and the crown 113.
- the abutment cord 1241 makes it possible to secure the pusher to the body, which can only move axially over a maximum stroke determined by the distance separating the lower end of the guide wall 124 and the bottom of the ring finger formed between the sleeve 114 and the crown 113.
- the piston member 130 comprises, in this embodiment, a main piston 136 engaged in leaktight sliding in the main barrel 117 and a differential piston formed by two lips 132 and 133 in contact sealed sliding in the barrel formed by the internal surface 1232 of the distribution wall 123.
- the piston member 130 is advantageously made in one piece.
- the lips 132 and 133 extend one above the other with a spacing greater than the axial extent of the swirl system 126.
- the upper lip 132 is in contact of the internal surface 1232 above the swirl system 126, while the lower lip 133 comes into contact with the internal surface 1232 below the swirl system 126.
- the swirl system does not cannot communicate with the interior of the pusher except at the level of the space formed between the two lips 132 and 133.
- This is the rest position in which the piston member 130 is pressed against the bearing wall 121 by the spring 140, which bears on the one hand on the shoulder 1131 and on the other hand under a plate 131 formed by the piston member 130.
- the two lips 132 and 133 are formed on the outer periphery of the plate 131. In its center, the plate abuts against the stop stud 1213 formed at the internal surface 1212 of the support wall 121. It can be considered that the differential piston is formed by the plate 131 forming the two lips 132 and 133.
- the piston member 130 also forms an axial central rod 137 which extends from the plate 131 away from the bearing wall 121. This axial rod 137 is partially engaged in the inside of the inlet sleeve 116 formed by the body 110.
- the rod 137 forms a valve profile 138 intended to cooperate with the corresponding profile 1161 formed by the sleeve 116.
- the rod 137 in cooperation with the sleeve 116 forms an inlet valve for a pump chamber 1, as will be seen below.
- the piston member 130 forms a piston crown 135 at the lower end of which the main piston 136.
- the piston crown ⁇ 135 is formed concentrically around the axial rod 137, so as to define between them an annular conduit which extends through the plate 131 through fluid passage holes 134.
- the body 110, the pusher 120 and the piston member 130 together form a pump chamber 1 which extends continuously between the main barrel 117 and the sleeve 116, between the piston crown 135 and the axial rod 137, in the through holes 134, and between the plate 131 and the internal surface 1212 of the wall d support 121.
- the upper surface of the plate 131 and the internal surface 1212 form wall elements of the pump chamber 1.
- the spring 140 pushes the piston member 130 in abutment against the support wall 121.
- the inlet valve formed in cooperation between the axial rod 137 and the sleeve 116 is open. The two risers
- the axial rod 137 engages more deeply in the sleeve 116 until a sliding sealed contact is created between the sleeve or the rod.
- the pump chamber 1 is isolated from the reservoir 5. From this moment, the product in the pump chamber 1 will be pressurized.
- the total useful volume of the pump chamber remains necessarily constant. But as the main piston 136 sinks into the barrel 117 thereby reducing the volume of the lower part of the chamber, a new volume must be created. This is possible because the differential eye moves away from the support wall
- FIGS 3a and 3b show a particular non-limiting embodiment for the swirl system formed in the distribution wall of the distribution member of the invention.
- This swirl system includes at least one tangential swirl channel 1262. In the figures, there are three tangential channels arranged equiangularly.
- the swirl system also includes a central swirl chamber 1261 which is precisely centered with respect to the dispensing orifice 125.
- the swirl system can include a peripheral feed ring 163 which allows d feeding all the swirl channels 1262. If necessary, the swirl system can be reduced to a single swirl channel associated with the central swirl chamber.
- An advantageous characteristic of the invention resides in the fact that the piston member 140 is biased against the bearing wall 121 and moves under the effect of the increase in pressure inside the pump chamber away from this support wall. This is in particular made possible by the fluid passage holes 134 which pass through the plate 131 forming the differential piston. It can also be said that the support wall defines a wall element of the pump chamber.
- Such a displacement of the differential piston away from the support wall, in association with a swirl system formed in the distribution wall, is advantageous in terms of demolding since the upper lip 132 slides in leaktight manner on the part upper part of the sliding barrel which will not be damaged by the removal of the molding pin forming the negative imprint which was used to mold the swirl system. It can also be noted that the rest position is reached when the stop bead 1241 formed by the guide wall 124 is in support under the re-entrant flap 1141.
- Figures 4a and 4b show two alternative embodiments of the embodiment of Figures 1 and 2.
- the return and precompression spring is formed integrally by the body 210 and carries the reference numeral 2171. The spring extends in the extension of the main barrel 217 and bears under the plate 231 which forms the differential piston with its two lips 232 and 233.
- the dispensing member 300 comprises a return spring 3311 which is produced in a single piece by the piston member 330. More specifically, the spring 3311 extends from the underside of the plate 331. It bears at its lower end on the shoulder 3331 formed by the body 310. Apart from the particular shape of the spring, the dispensing member 300 may be identical to that of FIGS. 1 and 2. In these alternative embodiments of FIGS. 4a and 4b, the dispensing member comprises only three elements constitutive, namely a body, a pusher and a piston member, the return and precompression spring being integrated either in the body or in the piston member.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0315194A FR2864176B1 (en) | 2003-12-22 | 2003-12-22 | FLUID PRODUCT DELIVERY PUMP. |
PCT/FR2004/050730 WO2005063405A1 (en) | 2003-12-22 | 2004-12-20 | Fluid product dispensing pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1706212A1 true EP1706212A1 (en) | 2006-10-04 |
EP1706212B1 EP1706212B1 (en) | 2008-02-13 |
Family
ID=34630469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04816579A Active EP1706212B1 (en) | 2003-12-22 | 2004-12-20 | Fluid product dispensing pump |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1706212B1 (en) |
JP (1) | JP2007515286A (en) |
CN (1) | CN100450638C (en) |
BR (1) | BRPI0417870B1 (en) |
DE (1) | DE602004011835T2 (en) |
ES (1) | ES2298862T3 (en) |
FR (1) | FR2864176B1 (en) |
WO (1) | WO2005063405A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2906232B1 (en) | 2006-09-27 | 2008-12-12 | Valois Sas | DEVICE FOR DISPENSING FLUID PRODUCT. |
FR2931138B1 (en) * | 2008-05-19 | 2010-05-28 | Valois Sas | FLUID PRODUCT DISPENSER |
US9846066B2 (en) * | 2015-07-24 | 2017-12-19 | Silgan Dispensing Systems Corporation | Adjustable dosing dispensers and methods for using the same |
EP3407757B1 (en) * | 2016-01-25 | 2020-11-04 | L'oreal | Packaging and dispensing device for dual content |
EP3272596B1 (en) * | 2016-07-22 | 2019-02-27 | Fico Transpar, S.A. | Fluid-ejection device |
FR3083969B1 (en) * | 2018-07-17 | 2020-06-19 | L'oreal | DISTRIBUTOR OF FLUID COSMETICS |
FR3090415A1 (en) * | 2018-12-24 | 2020-06-26 | Albea Services | Pump for cosmetic bottle, waterproof in low pressure conditions |
WO2020174421A1 (en) * | 2019-02-26 | 2020-09-03 | 3M Innovative Properties Company | A system and method for prepping liquid |
CN111520307B (en) * | 2020-04-24 | 2021-11-30 | 合肥华升泵阀股份有限公司 | Automatic viscous liquid dispensing pump based on industrial automation system |
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US4050613A (en) * | 1976-08-31 | 1977-09-27 | Corsette Douglas Frank | Manual actuated dispensing pump |
US4111367A (en) * | 1977-02-18 | 1978-09-05 | Ethyl Corporation | Finger operated spray pump |
IT1086022B (en) * | 1977-09-05 | 1985-05-28 | Coster Tecnologie Speciali Spa | ALTERNATIVE MANUAL PUMP SPRAYING LIQUIDS, SUCH AS PERFUMES AND OTHER LIQUIDS |
AU534828B2 (en) * | 1979-05-16 | 1984-02-16 | Yoshino Kogosho Co. Ltd. | Atomizer |
US4494680A (en) * | 1980-02-13 | 1985-01-22 | Corsette Douglas Frank | Manually operated dispensing pump |
DE3928521A1 (en) * | 1989-08-29 | 1991-03-14 | Megaplast Dosiersysteme | DOSING PUMP |
NZ243264A (en) * | 1991-07-02 | 1995-10-26 | Abplanalp Robert H | Aerosol valve unit for vertical or tilt action with movable valve body and valve stem being frictionally engaged and having slots and orifices facilitating moulding |
FR2742812B1 (en) | 1995-12-22 | 1998-02-20 | Valois | PREPRESSURE PUMP FORMED IN PUSH BUTTON |
CN2553899Y (en) * | 2002-07-20 | 2003-06-04 | 孙秉忠 | Supershort spray pump |
-
2003
- 2003-12-22 FR FR0315194A patent/FR2864176B1/en not_active Expired - Fee Related
-
2004
- 2004-12-20 WO PCT/FR2004/050730 patent/WO2005063405A1/en active IP Right Grant
- 2004-12-20 JP JP2006546278A patent/JP2007515286A/en not_active Withdrawn
- 2004-12-20 ES ES04816579T patent/ES2298862T3/en active Active
- 2004-12-20 DE DE602004011835T patent/DE602004011835T2/en active Active
- 2004-12-20 BR BRPI0417870-0A patent/BRPI0417870B1/en not_active IP Right Cessation
- 2004-12-20 EP EP04816579A patent/EP1706212B1/en active Active
- 2004-12-20 CN CNB2004800407578A patent/CN100450638C/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005063405A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2864176B1 (en) | 2008-04-25 |
CN1905949A (en) | 2007-01-31 |
DE602004011835D1 (en) | 2008-03-27 |
CN100450638C (en) | 2009-01-14 |
EP1706212B1 (en) | 2008-02-13 |
FR2864176A1 (en) | 2005-06-24 |
DE602004011835T2 (en) | 2009-02-26 |
BRPI0417870A (en) | 2007-04-27 |
BRPI0417870B1 (en) | 2018-03-06 |
WO2005063405A1 (en) | 2005-07-14 |
JP2007515286A (en) | 2007-06-14 |
ES2298862T3 (en) | 2008-05-16 |
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