Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1066—Pump inlet valves
  • B05B11/107—Gate valves; Sliding valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—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
  • B05B11/1042—Components or details
  • B05B11/1066—Pump inlet valves
  • B05B11/1067—Pump inlet valves actuated by pressure

Definitions

• the invention refers to a nebulizer for liquids, perfumes and similar products, particularly suitable for temporary application to recipients containing the liquid to be delivered.
• liquids, and in particular perfumes and similar products can be nebulized by increasing the pressure of the liquid to be delivered by passing it through a nozzle equipped with holes gauged in relation to the density of the liquid to be delivered and the degree of nebulization to be obtained.
• special devices called “nebulizers” are used which are temporarily applied to the recipients containing the liquid to be nebulized and are activated manually by the user.
• nebulizers generally include a hollow body with a compression chamber for the liquid communicating with a suction duct inserted in said liquid, whose opening/closing is controlled by means of valves.
• a sealed piston in a sliding configuration coupled to the hollow body that moves in a contrasting manner with the elastic means, compresses and sucks the liquid contained in the compression chamber.
• the sealed piston is equipped with a tubular chamber that communicates on one side with the compression chamber and on the other, through a choke, with a delivery duct for the liquid equipped with a nozzle.
• a stopper plug sliding elastically inside the tubular chamber, opens/closes the choke and allows the liquid to flow.
• the user by activating the piston, closes the valves, loads the elastic means and compresses the liquid contained in the compression chamber, gradually increasing its pressure.
• the pressure is discharged on the stopper plug until the choke opens, allowing the pressurised liquid to reach the nozzle.
• the elastic means After completing the delivery operation, the elastic means returns the piston to the initial position, generating a vacuum within the compression chamber, opening the valves and sucking the liquid, preparing the nebulizer for the next delivery operation.
• the main problem with the nebulizers as described is that the elastic means used to make the movement of the sealed piston and the stopper plug smoother, consists of metallic helical springs. This makes it difficult to recycle the nebulizer because the metallic parts must first be separated from the plastic parts.
• Such elastic elements have a compression curve R that is different from the expansion curve D, thus significantly increasing the complexity in creating elements with characteristics that are similar to those of the metallic helical springs.
• the purpose of this invention is to solve the aforementioned problems.
• the purpose of this invention is to build an all-plastic nebulizer.
• a nebulizer for liquids equipped with devices to be coupled to the neck of a recipient containing the liquid to be delivered that in accordance with the main claim includes:
• a first sealed piston coupled in a sliding configuration to said hollow body, equipped internally with a tubular chamber that communicates through a communication duct with said compression chamber and by means of a choke with a liquid delivery channel, and said delivery channel being equipped with a nozzle to nebulize said pressurised liquid;
• the advantage of this invention is that it reduces the number of elements comprising the nebulizer with respect to the known types.
• Another advantage of the invention is that it improves the nebulization of the liquid with respect to the known types of nebulizers.
• - fig. 1 represents a Cartesian diagram of the compression/force generated by a known type of metallic helical spring
• - fig. 2 represents the elastic response of an elastic element similar to the element shown in fig. 1 , built with an elastomer material;
• - fig. 3 represents a partial cross-section of a nebulizer, the subject of this invention, applied to a recipient;
• - figs. 4 and 5 represent executive arrangements of an item of the nebulizer shown in fig. 3;
• - fig. 6 represents a layout of an element comprising the nebulizer shown in fig- 1 ;
• - fig. 7 represents a cross-section of the element shown in fig. 6; - fig. 8 represents the nebulizer shown in fig. 3 during an operating phase;
• - fig. 9 represents the nebulizer shown in fig. 3 during another operating phase
• - fig. 10 represents the nebulizer shown in fig. 3 during a subsequent operating phase
• - fig. 11 represents an arrangement of the nebulizer shown in fig. 3;
• - figs. 12 and 13 represent a cross-section of the operating phases of the nebulizer shown in fig. 10;
• - fig. 14 represents an executive arrangement of the nebulizer shown in fig 10.
• the nebulizer described in this invention is represented in fig. 3 where it is indicated overall with 1 at neck O of a recipient C containing a liquid L to be delivered and includes a hollow body 3 that at the top consists of a liquid compression chamber 4 which communicates with the interior of the recipient C, through a suction duct 5 immersed in the liquid L.
• Valves, indicated overall with 6, are installed downstream of the suction duct 5 and are used to open/close it during the various operating phases of the nebulizer 1.
• the first sealed piston 7 is coupled in a sliding configuration to the hollow body 3 and is equipped internally with a tubular chamber 8 which, through a passage way 9, communicates with the compression chamber 4 and by means of a choke 10, communicates with a delivery channel 11 for the liquid L with a nozzle 12 to nebulize said liquid L.
• a stopper plug 13 is coupled in a sliding configuration to the interior of the tubular chamber 8 and moves in a contrasting manner with the first set of elastic means 14 to open/close the choke 10.
• a second set of elastic means 15 installed between the hollow body 3 and the sealed piston 7 is loaded during the liquid L compression phase and, once delivery has been completed, allows the sealed piston 7 to return to the resting position with an elastic movement.
• the first set of elastic means 14 must be built with non-metallic elastic materials, for instance elastomers, such as thermoplastic rubber.
• a spherical elastomer element 14a is shown which is placed in contact with the sealed piston 7 by means of a projection 16 for which a sudden elastic yield can be obtained at the critical force.
• a projection 16 for which a sudden elastic yield can be obtained at the critical force.
• the second set of elastic means 15 consists of a compression spring 17 made with plastic material having, in the preferred version, a truncated conic shape but that, according to additional shapes, can also be, for example, cylindrical.
• the perimeter of the compression spring 17 has a spiral ribbing 18 that guarantees the necessary elastic performances at said spring.
• valves 6 For what concerns the valves 6, they include a valve element installed near the bottom of the compression chamber 4, represented in detail in figs. 6 and 7, designed to close/open the suction duct 5 of the liquid L.
• It consists substantially of a main flat body 20 that on the exterior has projecting elastic spokes 21 that are coplanar to it in what is basically a spiral shape.
• the user loads the compression spring 17, as shown in fig. 8, by exerting pressure P on the first sealed piston 7 and pushes the main body 20 against the walls of the compression chamber 4.
• the main body 20 closes the suction duct 5, allowing the piston 7 to compress the liquid
• the pressure increasing gradually, is discharged through the communication duct 9 on the stopper plug 13 that, in turn, compresses the elastomer 14.
• the compression spring 17 returns the sealed piston 7 to its initial position, generating a vacuum inside the compression chamber 4.
• This vacuum lifts the main body 20 and opens the suction duct 5, allowing the liquid L to flow within the compression chamber 4 and preparing the nebulizer
• An executive arrangement of the nebulizer that is the subject of the invention indicated with 100 is shown in detail in fig. 11 and differs from the pervious one owing to the different construction of the valves 6 designed to open/close the suction duct 5 for the liquid L.
• valves 6 consist of a second sealed piston 23 that is solidly joined to the first sealed piston 7, coupled in a sliding configuration to a suction chamber 22 built along the extension of the compression chamber 4, installed between the latter and the suction duct 5 for the liquid L.
• Figures 12 and 13 demonstrate the similar operating phases of the executive arrangement of the nebulizer of fig. 11.
• Another executive arrangement represented in fig. 14, and indicated overall with 101 , shows how the suction duct 5 for the liquid L can be closed during the compression phase by using a diaphragm 24 that adhering to the stem 25 of the second sealed piston 23, guarantees the seal necessary for compression and suction of the liquid L.

Landscapes

• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)
• Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Catching Or Destruction (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=11427240

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (1)

Family Cites Families (5)

• 1999
  • 1999-12-24 IT IT1999VI000265A patent/IT1307537B1/it active
• 2000
  • 2000-12-22 ES ES00990022T patent/ES2195953T3/es not_active Expired - Lifetime
  • 2000-12-22 AU AU26766/01A patent/AU2676601A/en not_active Abandoned
  • 2000-12-22 EP EP00990022A patent/EP1154863B1/fr not_active Expired - Lifetime
  • 2000-12-22 DE DE60002052T patent/DE60002052T2/de not_active Expired - Lifetime
  • 2000-12-22 WO PCT/EP2000/013211 patent/WO2001047641A1/fr active IP Right Grant
  • 2000-12-22 AT AT00990022T patent/ATE236731T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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