IL32872A - Spraying dispenser using separate containers for material and propellant fluid - Google Patents

Description

DISPENSER SEPARATE CONTAINERS FOR MATERIAL AND PROPELLAilT PLUID This invention generally to a dispensing devise o in whic a gaseous or gasifiable propellant is held in a container that is separate from a for fluent produot to be and i the propellant and the product isolated one another until a dispensing operation takes place a or a According to the present invention a dispensing for use in discharging the conteats of a product containe comprises a propellant container having a head including a propellant valve and a valve actuator to a va provided longitudinally flow passages at their upper ends to discharge zone in the valve actuato one eaid passages into with the of propellant container th propellent valve by operation of actuator and another of eaid passages communicating with product tuba serving for the to the zone of a powdered product container in produc container isolated from the propellant the proximity of passages and the material therebetween being ouch that heat between the produot and By reason o heat exchange that place between the produot and propellant during flow t heat imparted to th propellant results in higher pressure thereof enhanced velocity at the with the result that the amount product discharged at each actuation of the dispensing device is or enhanced rtomisation of product takes place 1th the performance known type of inve tion will now fee by of example with reference to the in 1 ie vertical section of a according to invention within a surrounding produc 2 ie side of part of dlepeneer 3 ie a vertical partly broken of a of and product is vertical section of further modified to In the a product container a fluent product usuall a liquid that ie to be Mounted open top the container and within a container 20 which under pressure propellant that either preferably a 21 of volatility as is i aerosol a euc an under the red nd In the form the propellent container of and the product container of auch To mount the container the upper part of the product container 10 inturned to form a curved shoulder 11 and a downwardly extending flange 12 which joined to the outer of the container ae by an area below ita top of conventional configuration ie at ite upturned rim the upper of the container 20 by rolling over lapped parts 22 and 23 the cup 19 and container A head indicated includes the mounting cup valve for control of the propellant a an and a dip tube all of which ar described In the assembly Figure and shown in external view in figure the o the product container 10 effected by the propellant container and closure of th propellant container is ef by the head structure with mounting cup Because the propellant container 20 is joined to the head structure by the mounting cup the head struoture 50 and propellant container 20 are capable of uae an independent portable as shown in Figure dispensing a fluent product from container to which this portable uni not Beamed to upper of the propellant container a conventional central upstanding collar 24 that a way s a valve colla surrounds a cylindrical plastic housing of the valve unit and by ite inturned upper flange holds the outer of an annular plastic gasket 32 in place against th upper of the valve housing The valve housing 30 has a central Opening 33 in bottom wall to provide open communication the propellant container 20 and bottom wal serves in a known way ae the fixed abutment for biasing spring 34 that holds a vertically movable valve bod at upper a the underside o the inboard part of the valve gaeket Fixed within a central bore in the valve body extendin through a hollow valve a is a hollow tube which terminates in the valve actuator below at level substantiall above the u er en of the outer The hollow valve 37 ie of smaller external dlaaete than the valve body a portion of emailer above the top ehoulder of the valve body this neok portion being of greater height the circle defined by the diameter of the han the initial thickness o the gaeke not part of thie neok tapered in known She hollow valve 37 has aide port through that ie normally closed by the inne of a central opening the that opening being of smalle diameter than part of the valve etear ini order to a tight sealing of side pert is also a eeal where the upper shoulder of the valve body 35 against the underside of The action o the valve ie the know the valve and body are depressed by effort the upward biasing force of spring the valve gasket 32 prevents flow of the propellant into the interior of the hollow and prevents Of propellent to the atmosphere past the gaeket When the valve ie the inner part of the annular gaeket 32 bent or warped downwardly until t side port 39 i the valve 37 is uncovered flow passage is opened between gaeke 32 and the upper ehoulder of the body Propellant than throug pOrt 39 into the interior of the hollow valve and upwardly in the annular space 10 surrounding the specially provided inner tube the role of which now tube extending through the and valve body and movable forms a part of a flow line discharge of the product to be In accordance with the invention disclosed in our Application an extension wall of valve housing wdip to the part of product container said tuhe at partly There i sealed Joint conventional construction where it passes through wall o the interior propellant container By aotion the discharge ejector be described flow of gaseous propellant through the a reduction of pressure the line established dip tube 8 and its uppe extension with the result that the contained produot caused to flow up to and through the elector and ou the discharge por in the head he dip tube 8 whilst being heat conducting of be so as to of propellent or product through the of the tube if the is of a plastics material t inherently the tube must coated or treated to render it fuming now the constructio of the valve actuator 60 and which form a part of the head it will be seen that in the forat shown actuator the configuration and size of a conventional container with known dispensers which product and propellant are in single container and are discharged together through valve when is depressed on the lis top surface a 61 to fit the finger actuator button 60 has a depending outer and a dependin hub a circula in which tight receives and the upper o valve steal A lateral extension 64 of central hub now to be the of the actuator button any of various shown there is a laterally extending cylindrical recess 65 in the lateral with a forward which a flanged plastic fitting 66 having a recess 67 extending the fitting to some its fitting 66 la stopped short o the full depth of the recess 65 to provide a chamber 68 between the inne end of the fitting 66 the end wall 69 of the recess A tapered passage narrowing in diameter toward the discharge side as connects the 67 with this inner chamber this paeaage 70 provides the discharge port for the the chamber 68 which it lacharges being in communication with the propellent flow line the annular passage 40 within the valve by way of a port 71 connecting to an annular chamber 41 just above the end the outer of the valve stem but below the end inner tube chamber 41 ia of smaller diameter than the recess 58 receives this being to provide a shoulder for engagement between the hub 63 the button and the valve s unit is constituted by the tapered age 70 and a hollow nipple 51 of smaller project through this passage 70 and slightly beyond its and which has outer tapered either to to the taper of the 70 or to cause between the two tapered faces that define the annular flow passage or for the The nipple 51 projects the central hub and its hollow interio bore 55 with the product flow line by way of aft upper chamber or 56 in the hub This recces is open at its lower end to the flared recess 57 which stops and holds the top end of the product tube The ihus is which the flow of propellant gas through annular nozzle surrounding a flow passage for th product to be ther ie a flow of both propellant gas and liquid the gas the tapered passage 70 impinges on the central of product and atomises causing a spray discharge through flared recess 67 to two separated flow for propellant and product established by passages through the par of the head structure extending lower end tha closes the open end of the propellant container up the discharge ejector two streams first come lower end of each of the two flow lines lies within th area of top opening of the propellant in previously constructions product flow line down on the outside the propellan propellant flow line established by the open 33 between the propellant container 20 and the interio of the valve housing and when the 32 is by the valve housing and por leading to the annular passage 40 in the valve 37 the annular chamber 41 the flow line is by way of port 71 leading to chamber which delivers to t annular passage flow line is established by central passage through the head generall parallel to in case with propellant flow the product flow lino includes the dip tube 8 in this is the lower end tube 36 that centrally through the body and hollow valve the upper 56 in the hub the valve From the product line of through reeidual propellent the a t takes which offsets materi l degree the cooling of th propellen that the reduction of preeeure upon opening the propellant is especially important in the of the preferred that are under the normally maintained preeeure but vaporise upon opening The resulting cooling o the unvaporised residue of if not by tranefer of that the propellent at lowe when the valve ia worked a second before the heat tranefer the can reetore the propellant to normal The ejector therefore a t work at o preeeure flow volume for which it ie the discharge and the ejector efficiency are i the invention therefore e an improvement in maintaining the of the product f om the by the product flow line pass through the propellant o through the part of it the residual body of to in a feasible wa required the invention ef the novel head etructure which can be feaeible in product and which advantages apart ting tills improved diepoeition of product flow lin below the head novel head with generally parallel and passages establishing separate flew lines f the lower end the ejector a the has the advantage of the use of known valve for the propellant and of product line be Incorporated in the moulded by feasible For with the type of introduction of central through the body and valve an entirely feature from thle standpoint of production permits retentio of and the of the already perfected aerosol valve here Other valve means lead themselves to thle same incorporation of the product flow line of course may be i place of the one the disclosed chambers and passages connecting the vertical passages to the laterally directed discharge are readily provided the moulding of the in contrast to previously known an isolation type does no materially increase the overall size of the head structure compared wit a conventional aerosol dispenser which does not isolate the from the disclosed form of e of propellent and product instead of the tranaverae believed to t efficiency of ejection and the usage of while equall good if not better for a spray The disclosed construction also and in practical oenee seepage of propellent into the product container or product flow accomplishes an Optimal isolation of the two if the propellont gas oeepo throug the valve i escapes to the air above casket end the valve a Or lesser through the port 39 in the and out through the discharge central produc the dip tube highly to and its top joint with the hub of actuator reoess can be a fit eliminates of be amount of seepage through the two containers 20 and this the container shoulder and an upstanding collar above the shoulder which is joined the vertical side wall of the container at a lower by a rolled bead joint The modification of Figure 4 is one which provides for discharge of than through the bore which the construction modified to provide for delivery of propellent to central tube the and delivery of product to annular 40 that central o that the central tube ie closed at the level where it Joins the valve bod a hollow bore 81 is provided that side port hot open to the annular passage 40 but to the interior of the central lower flow product the being in with the dip tube 8 which to the lower end of the central bore in the valve body connection the actuator to the valve 37 and to central tube 36a ia In Figure 4 is show a modified construction the between the cup and propellent A 27 is rolled in side wall of the upturned of the cup and the side of the container 20 ia more sharply to give a area of contact at the insufficientOCRQuality

Claims (1)

1. A dispensing for in discharging the Contents a propellant container a head structure i cluding a propellant valve an valve o which is a valve provided with tudinally separate flow passages at their upper ends to a discharge in the valve oat o said brought into communication with Interior of propellant oontainer when t propellant is opened by operation of the actuator and another of said with a product tube serving the flow to the discharge of a powdered liquid product contained in a produot container isolated the the proximity the passages and the material therebetween such that heat occurs between the product and A diepeneer according to wherein the product passage ia in constituted by an extension of a product tube through the valve body the said stem is hollow and together with tube extension part o the propellant p A diepeneer to wherein the produot constituted in part by a tubular extension of valve said tubular extension passing through the valve and forming therewith a part of said propellant the passage through the tubular exteneion with an axia bore which extends the valve body for communication with a product A dispenser according to the valve body has a tubular extension exte into the valve actuator and constitutes part of the propellant flow the valve body having a valve which surrounds the tubular extension therewith part product flow A according to any of the preceding 1 wherein the propellent passage communicatee with at radial port normally isolated froa the propellant container by a gask t engaging the valve said port being of the alve into with the interior of the A dispenser according to any one of the preceding claims 1 discharge comprises propellent and product in relation to each other the valve A according to claim wherein the product discharge orifice about the propellant discharge A diepeneer according to an one of the preceding wherein the container sealed within a surrounding product dispeneer to any one of the preceding wherein the valve actuator a cap or button having a depending hub provided with a for receiving the valve dispenser according to claim wherein the cap or button hae a socket for receiving insert through an opening in which a formed integral with the and opening providing dieeharge the propellant nd insufficientOCRQuality