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
  • 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
  • B05B11/0005—Components or details
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill 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
  • B05B11/1001—Piston pumps
  • B05B11/1009—Piston pumps actuated by a lever
  • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable 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
• • 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
  • B05B11/0005—Components or details
  • B05B11/0097—Means for filling or refilling the sprayer

Definitions

• the invention relates to a precompression system for placing between a pump and a discharge nozzle that are connected by a conduit debouching in a space, the system comprising a precompression valve movable between a position closing off the connection in which it abuts a seat on the mouth of the conduit and a position releasing the connection in which it is spaced from the seat, the precompression valve being biased to the closing position by spring means.
• a precompression system is known from e.g. the US Patent No. 5,730,335.
• the known precompression system is used in a sprayer head for a container, for instance a bottle containing liquid detergent.
• Such a sprayer head is formed by a body in which a manually operable piston pump is arranged.
• This pump is operated by a trigger that is pivotally connected to the body.
• the suction side of the pump is connected to a tube that extends into a bottle over a substantial length, usually nearly to the bottom thereof, and through which liquid may be drawn out of the bottle.
• the compression side of the pump is connected to the discharge nozzle of the sprayer head through a conduit .
• the precompression system comprising a precompression valve that is kept shut by spring means and that is opened only when a predetermined pressure is attained within the pump.
• the precompression valve has for its object to prevent the fluid from leaving the discharge nozzle at too low a pressure, which would result in too large drops being formed in the spray.
• the known precompression system comprises an end part of the cylinder wall of the pump, which debouches in an annular space.
• the rim of the cylinder wall constitutes a seat onto which a resiliently flexible diaphragm is pressed.
• This diaphragm is pressed shut by spring pressure, which in the diaphragm of this older patent is generated by the flexion stresses in the material of the diaphragm itself.
• the invention therefore has for its object to provide a precompression system of the type described above, which is easier to make and assemble than the conventional precompression system, and which therefore offers a greater freedom of design when integrating it into a compact sprayer head.
• this is achieved in that the space is connected to the pump and the conduit is connected to the discharge nozzle.
• the spring means are preferably integrated in the precompression valve, for instance in that the precompression valve and the spring means are constituted by a resiliently flexible diaphragm.
• the diaphragm is preferably domed, so that it has a stable and suitably tensioned position of rest.
• the precompression system preferably includes a stop member cooperating with the diaphragm whereby bending of the diaphragm is limited and the diaphragm is prevented from "flipping over" to another stable position at a greater distance from the seat, from which it would then not return.
• the stop member is preferably integrally formed with the diaphragm.
• the space is preferably at least partially annular and least partially surrounds the end of the conduit, so that a simple circular diaphragm may be employed.
• the part of the conduit surrounded by the annular space and the pump may each have a centre line, these centre lines being substantially parallel but offset with respect to each other.
• the annular space is preferably bordered by a substantially cylindrical sleeve.
• the diaphragm and the sleeve may be integrally molded, thereby further reducing the number of parts and thus simplifying assembly of the system.
• At least one suction opening closable by a valve is arranged in the sleeve for drawing in the liquid to be sprayed.
• the invention further relates to a spraying device comprising a pump having a suction side and a compression side, means connected to the suction side of the pump for supplying a fluid to be sprayed, a discharge nozzle connected to the compression side of the pump and a precompression system of the type described above arranged between the pump and the discharge nozzle.
• a spraying device comprising a pump having a suction side and a compression side, means connected to the suction side of the pump for supplying a fluid to be sprayed, a discharge nozzle connected to the compression side of the pump and a precompression system of the type described above arranged between the pump and the discharge nozzle.
• the invention relates to an assembly constituted by a container and a spraying device as described above.
• Figure 1 is a perspective view of an assembly constituted by a container and a spraying device in which the precompression system of the invention may be used;
• Figure 2 is a perspective exploded view of the sprayer head of the assembly of Figure 1 incorporating the precompression system;
• Figure 3 is a partly cut away perspective view of the sprayer head of Figure 2 during a pump stroke
• Figure 4 is a view corresponding to Figure 3 of the sprayer head during a return stroke,-
• Figure 5 is a detailed view of the precompression system in the direction of the arrow V in Figure 3 ;
• Figures 6A and 6B are longitudinal sections through the precompression system at the onset and the end of the pump stroke, respectively, and;
• FIG. 7 shows a schematic perspective detailed view of an alternative embodiment of a valve used in the precompression system.
• a sprayer head 1 for a container 2 comprises a pump 3 having a suction side 5 and a compression side 6.
• Movable operating means 4 are connected to the pump 3, in the illustrated example constituted by a trigger 13 having a continuous pivot shaft 53 that is received in a hollow space 54 in a frame 22 carrying the pump 3 and that is locked therein by a flexible snap arm 55.
• Means 7 are connected to the suction side 5 of the pump 3 for supplying a fluid from the container, comprised of a conduit having its free end connected to a tube 23 extending into the container.
• the compression side 6 of the pump 3 is connected to a discharge nozzle 8 through a conduit 9.
• Pump 3 is a piston pump, constituted by a pump housing or cylinder 10 and a piston 11 reciprocating therein.
• the piston 11 is connected to the trigger 13.
• the sprayer head 1 comprises biasing means 16.
• the biasing means are constituted by a pair of parallel flexion springs 17 that engage ribs at the inside of trigger 13.
• a precompression system comprising a space 58, which in the illustrated embodiment is annular, connected to the cylinder 10 and an end part of the spraying conduit 9 debouching therein, which are closed off in a gas- and liquid-tight manner by a resiliently flexible domed diaphragm 59.
• the space 58 is bordered by a cylindrical sleeve 60 that is received in a cavity 61 in the frame 22 and that is integrally formed with the diaphragm 59 in the illustrated embodiment.
• an opening 15 is formed, in which is arranged a valve, and which is connected to the suction tube 7 for the fluid through an opening 67 in the frame 22.
• This valve 63 which is also integrally formed with the sleeve 60, is movable, in the shown embodiment pivotable between a position in which it hermetically seals the opening 67 (Figs. 3, 4, 6A) and a position in which this opening 67 is left clear (Fig. 5, 6B) . Further a stop member 64 is connected to the diaphragm 59, which serves to limit bending of the diaphragm 59 and to prevent it from "flipping over”. The cylindrical sleeve 60 is locked in the cavity 61 of the frame 22 by an end wall which in the shown embodiment is integrally molded with the container 2.
• the precompression system 40 serves in known manner to inhibit transport of fluid from the container 2 to the discharge nozzle as long as a predetermined pump pressure is not yet attained. If a fluid is sprayed through the nozzle 8 at too low a pressure, this fluid is insufficiently atomized and drops generated in the spray cone are too large . In order to prevent this from occurring the connection between the container 2 and the discharge nozzle 8 is closed off by the diaphragm 59 which is forcibly pressed against the rim 66 of the spraying conduit 9 serving as a seat due to the internal stress determined by the domed configuration and assisted by the ambient pressure behind the diaphragm 59.
• the sprayer head 1 thus functions as follows .
• a user wishes to atomize the fluid from the container 2, he first pulls the trigger 13. In this way air that is present in the cylinder 10 and that cannot flow back to the container 2 due to the opening 67 being shut off by the valve 63 is compressed by the piston 11.
• the pressure of the air is high enough at the end of the pump stroke the diaphragm 59 is lifted from the seat 66 and the air may escape.
• annular space 58 is connected to the pump cylinder 10 and the conduit 9 debouching therein is connected to the discharge nozzle, instead of the other way around as in conventional precompression systems, the annular space 58 need not be aligned with the cylinder 10, but may be offset as illustrated.
• the sprayer head may thus be efficiently manufactured by injection molding so that the design may be kept compact.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Closures For Containers (AREA)
• Reciprocating Pumps (AREA)
• Compressor (AREA)
• Nozzles (AREA)

Priority Applications (11)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26642890

Family Applications (1)

Country Status (22)

Cited By (16)

Families Citing this family (6)

Citations (6)

• 1999
  • 1999-05-05 NL NL1011964A patent/NL1011964C2/nl not_active IP Right Cessation
  • 1999-12-10 DK DK99962563T patent/DK1137493T3/da active
  • 1999-12-10 EP EP99962563A patent/EP1137493B1/en not_active Expired - Lifetime
  • 1999-12-10 WO PCT/NL1999/000761 patent/WO2000033970A1/en not_active Ceased
  • 1999-12-10 SK SK778-2001A patent/SK286478B6/sk not_active IP Right Cessation
  • 1999-12-10 ES ES99962563T patent/ES2216612T3/es not_active Expired - Lifetime
  • 1999-12-10 HU HU0104627A patent/HU225004B1/hu not_active IP Right Cessation
  • 1999-12-10 KR KR1020017007210A patent/KR100594330B1/ko not_active Expired - Fee Related
  • 1999-12-10 HK HK02103729.0A patent/HK1042065B/zh not_active IP Right Cessation
  • 1999-12-10 RU RU2001119062/12A patent/RU2234379C2/ru active IP Right Revival
  • 1999-12-10 CZ CZ20012045A patent/CZ300359B6/cs not_active IP Right Cessation
  • 1999-12-10 JP JP2000586455A patent/JP4344098B2/ja not_active Expired - Fee Related
  • 1999-12-10 BR BR9916110-9A patent/BR9916110A/pt not_active IP Right Cessation
  • 1999-12-10 PT PT99962563T patent/PT1137493E/pt unknown
  • 1999-12-10 AT AT99962563T patent/ATE261778T1/de not_active IP Right Cessation
  • 1999-12-10 DE DE69915677T patent/DE69915677T2/de not_active Expired - Lifetime
  • 1999-12-10 CN CNB99814245XA patent/CN1133505C/zh not_active Expired - Lifetime
  • 1999-12-10 PL PL348824A patent/PL193250B1/pl unknown
  • 1999-12-10 AU AU18972/00A patent/AU1897200A/en not_active Abandoned
  • 1999-12-10 CA CA2354125A patent/CA2354125C/en not_active Expired - Fee Related
• 2000
  • 2000-05-05 AR ARP000102173A patent/AR025161A1/es active IP Right Grant
  • 2000-05-05 CO CO00032428A patent/CO5290343A1/es not_active Application Discontinuation

Patent Citations (6)

Also Published As

Similar Documents

Legal Events