BACKGROUND OF THE INVENTION
The field of the invention is dispensers for chemical concentrates, and particularly the dispensing of chemical concentrates, from a container, which can cause an increase in pressure in the container.
Dispensers of the type concerned with in this invention are disclosed in U.S. Patent No. 6,708,901
, which teachings are incorporated herein. The dispensing apparatus disclosed in this patent can control the flow of carrier liquid and chemical product in a precise and controlled manner. However, there are instances where the chemical product which is stored in the container from which the chemical product is dispensed can cause an increase in pressure. If the contents of the container are not vented, a problem can arise.
discloses a sprayer head for attachment to a container containing a chemical product to be diluted by a carrier stream. The sprayer head includes a vent channel that allows air to enter the container to displace the dispensed liquid chemical and prevent collapse of the walls of the container upon dispensing. US2002092925
discloses a dispenser for mixing and dispensing a liquid chemical concentrate with a diluent from a container. The body member of the dispenser includes a product passage and a vent passage.
The prior art does not provide a venting of excess pressure from a container which is employed in conjunction with a dispenser employing an eductor. Neither does the prior art provide such a venting of excess pressure from a dispenser which includes an air vent passage that is closed when the dispenser is not in operation.
SUMMARY OF THE INVENTION
The present invention provides a dispenser for dispensing different quantities of chemical concentrate into a stream of fluid from a concentrate container as defined in claim 1.
In a preferred embodiment, the vent member is gas pervious and liquid impervious.
In one aspect, the vent passage is constructed and arranged to be in a closed position when the product passage is closed.
In another aspect, the eductor is both slideable and rotatable, and the dispenser includes a trigger member constructed and arranged to slide the eductor and open the vent passage and includes a seal constructed and arranged to seal both the product passage and the vent passage.
In another preferred embodiment, the eductor is composed of first and second parts, only one of which is rotatable and the first part of the eductor is rotatable and extends from the body member.
In yet another preferred embodiment, a valve member is positioned in the through bore for regulating the flow or water through the through bore and the eductor.
In yet another aspect, the dispenser includes a trigger member connected to the body member and eductor to cause slideable movement of the eductor with the trigger member including a latching mechanism and an essentially flat thumb engaging portion.
A general object of certain embodiments of the invention is to provide a dispensing apparatus which can dispense a wide variety of chemical products.
Another object of certain embodiments of the invention is to provide a dispenser in conjunction with a container wherein the container and the dispensing apparatus are vented.
Still another object of certain embodiments of the invention is to provide a dispenser which is connected to a container wherein excess pressure in the container is vented.
Yet another object of certain embodiments of the invention is to provide a combined dispenser and container which is economical to produce and is dispensable as well as recyclable.
Yet another object of certain embodiments of the invention is to provide a dispenser which can effect a mixing of chemical and concentrate into a stream of water at different concentrations and dispense the mixed concentrate at controlled flow rates.
BRIER DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the dispenser of this invention in conjunction with a container;
FIG. 2 is a view in side elevation of the dispenser shown in FIG. 1;
FIG. 3 is a cross-sectional view of the dispenser shown in FIG. 1 illustrating a vent;
FIG. 4 is a bottom view of the dispenser shown in FIG. 1 illustrating the vent as well as an air passage and the passage for a dip tube;
FIG. 5 is an exploded view of the component parts of the dispenser;
FIG. 6 is a cross-sectional view of the dispenser in a closed position;
FIG. 7 is a view similar to FIG. 4 showing the dispenser in a low flow condition;
FIG. 8 is a view similar to FIG. 4 showing the dispenser in a high flow condition;
FIG. 9 is a cross-sectional view illustrating an indexing of an eductor in the dispenser;
FIG. 10 is a fragmentary view of the dispenser housing illustrating the eductor contact surfaces for limiting the movement thereof;
FIG. 11 is a cross-sectional view of the dilution adjustment member utilized in the dispenser; and
FIG. 12 is a cross-sectional view of a component of a flow control device employed in the dispenser.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 1 and 2, the dispenser generally 10
has a body member 12
with a container connector 14
for connection to a container or bottle 16.
A preferred connector system is more fully described in commonly owned patent application U.S. Serial No. 10/037,569 filed November 9, 2001
which teachings are incorporated herein by reference. At one end of the body member 12
is a hose attachment 18
for supplying pressurized water to the dispenser. A handle 17
is provided below attachment 18.
At the other end there is the spout 22
and a nozzle 20
for dispensing a mixed chemical solution. A flexible tube 15
extends between nozzle 20
and spout 22.
As seen in FIGS. 3 and 4, there is a nipple 6
which provides connection to a dip tube 19
and an air or vent passage 25.
The purpose of these is described later. There is also a vent member 7
which is of the liquid impervious but gas pervious type. It is available from W.L. Gore & Associates GmbH. The purpose is to allow gas to escape from container 16
when it is filled with a disinfectant cleaner which contains hydrogen peroxide. Oxygen gas can evolve and cause a problem with undesired expansion of the container 16.
In the instance where chlorine bleach is employed, the evolved gas would be chlorine. Vent member 7
with the micro-porous member 9
is press fitted into the body member 12
by means of collar 5.
Vent passageway 7a
exits to the outside of body member 12
between the ribs 35
as indicated in FIG. 1.
As stated previously, the container connector 14
for connecting the body member 12
to the container 16
is more fully described in patent application U.S. Serial No. 10/037,569
. It includes a fastening member 3
, also indicated herein as cap 68, with threads 4
for connection to the threads 2 on the bottle neck 1.
A gasket 8
, also indicated herein as gasket 67, is preferably placed between the top of the bottle neck 1
and the body member 12.
Referring to FIGS. 5 and 6, the dispenser 10
includes an eductor generally 11 composed of the first or outer eductor part 24
with a diverging passage 24a
and an inner second eductor part 26
with a converging passage 26a.
They are slideably connected in body member 12
with seals 52
providing a fluid tight contact. A valve assembly 28
for controlling the flow of water through the dispenser 10
is also slideably housed in body member 12
and is in contact with eductor part 26.
The hose attachment 18
is rotatably connected to body member 12
by the snap fitment 34.
A back flow preventer 30
is positioned in hose attachment 18
and has a seal 32
for contact with body member 12.
At the opposite end of body member 12,
the nozzle 20
is attached to eductor part 24.
An annular groove 36
is provided in the eductor part 24
and accommodates a head portion 38
of the trigger 40
with flange portions such as shown at 42
on the trigger 40
having shafts (not shown) for extending into bores such as 44.
A latch member 46
extends upwardly from the member 12
for fitment through the passage 48
of the trigger 40.
A dilution adjustment member 50
is connected to the eductor part 24
by means of the splines 47.
This is shown in FIG. 11. It has L-shaped passages 90-94
for introducing chemical concentrate into the gap 27
between eductor parts 24
These passages 90-94
have different diameters or widths for metering different concentrations of chemical concentrate. In some instances there are no passages to provide a rinse function. A dip tube 19
is connected to body member 12
and extends into container 16
for siphoning chemical concentrate into the bore 13
of body member 12
by way of passage 21.
The nipple 19
depicted in FIG 3 is not shown in FIGS. 4-8, nor is the gasket 8.
A seal member 23
is placed between dilution adjustment member 50
and body member 12.
A vent passage 25
connects container 16
and bore 13.
The adjustment member 50
is positioned inside eductor 26.
A spring 54
biases eductor part 26
as well as eductor part 24
toward the head portion 38
of trigger 40.
A quad O-ring 60
is attached in groove 57
of valve head portion 58.
It serves as a flow control element as later explained. A valve member 28
with passages 33
has a head portion 58
with groove 59.
A seal 66
is seated in groove 59
of head portion 58
and another seal 64
is placed on collar 62.
A gasket 67
is provided for cap 68
and a hose seal is provided at 69
Referring to FIG. 10, it is seen that body member 12
has a surface 79
for contact with contact member 29
of eductor 24
as well as a grooves 81
for the purpose of linearly positioning the eductors 24
and accordingly valve assembly when trigger 40
is depressed. A keyway 70
is disposed in body member 12
for accommodating a key member 76
(see FIG. 11) in eductor part 26
for allowing sliding but non-rotatable connection in body member 12.
A second opposing keyway 80
is also disposed in body member 12
in conjunction with key member 84.
Referring to FIG. 9, there is shown the eductor 24
with notches 77.
These accommodate the projections 75
on arms 72
extending from body member 12.
This provides an indexing function in conjunction with the orientation of dilution adjustment member 50
and passage 21
A better understanding of the dispenser will be had by a description of its operation. Referring to FIG. 6, the dispenser is shown in a closed position. A source of pressurized water, such as a hose, will have been connected to hose attachment 18.
In this instance, seal 66
on valve head 58
is seated against collar 62
and seal 64
against valve seat portion 65.
Accordingly, no water can pass between these two components and into bore 13.
This sealing effect is assisted by the flow of water in through the attachment 18,
against the valve components 58
The spring 54
and force of water also positions the head 31
of eductor part 24
away from body contact surface 79.
Referring now to FIG. 7, trigger 40
has been moved toward body member 12
with the result that eductor head 31
is contacting surface 79
of body member 12.
Valve portion 58
has moved toward the attachment 18
and seal 66 no longer engages collar 62.
In this position, water can flow between the two component parts as there are grooves 63
placed in the collar 62
to allow such flow into bore 13.
This is a low flow condition. In this position, the quad O-ring 60
serves as a flow control element, in that, with increased pressure and flow of water, the ring will expand and partially fill the grooves 63.
This maintains a consistent flow rate despite variations in the pressure of the inlet water supply. Water can then pass through passages 33 and into passage 26a
of eductor part 26
In order to initiate a high flow condition, the trigger 40
is moved further toward body member 12.
This is shown in FIG. 8. In this position, not only has seal 66
moved away from collar 62,
but collar 62
also has moved away from valve seat portion 65.
In this position, water cannot only flow from between head portion 58
and the grooves 63
in the collar 62,
but also between the collar 62
and the valve seat portion 65.
It should be pointed out that in this high flow position, trigger 40
can now become engaged with latch 46
if desired so that it can be held in the high flow condition. Referring again to FIG. 10, the contact member 29
of eductor part 24
will now engage the grooves such as 81
so as to allow the eductor parts 26
to be moved further inwardly into the body 12.
During the previously described flow conditions through the dispenser 10
such as when in the high or low flow condition, the concentrate will be drawn upwardly from the container 16
such as through the dip tube 19
. However, as noted previously in FIG. 6, there is a seal member 23
positioned over the passage 21
so that no product can be drawn up from the container 16.
At the same time, seal 23
also closes vent passage 25.
As seen in both FIGS. 7 and 8, the seal member 23
has moved away from both the product and vent passages 21
respectively. In this position, drawn product is allowed to enter into one of the five passages 90, 91, 92, 93
of dilution adjustment member 50
as seen in FIG. 10. Concentrate is thereby siphoned into gap 27
and mixed with water flowing through passage 26a
A reduced pressure is caused by the water converging in passage 26a
and diverging in passage 24a.
The orientation of the various passages 90-94
with the opening 23a
in seal 23
is facilitated by the indexing shown in FIG. 9.
The mixed solution will then exit through nozzle 20,
down through the tube 15
positioned in the spout 22.
in this instance is flexible so as to allow the eductor 24
to move inwardly and outwardly from the body member 12.
With product passing through tube 15
and spout 22,
this is the position which is utilized when filling a bucket or a bottle. As previously described a low flow condition would be utilized for filling a bottle while the high flow condition would be utilized to fill a large vessel such as a bucket. The spout 22
provides for the dispenser to be hung on a bucket. If desired, a hose (not shown) can be connected to spout 22
for filling purposes such as a "scrubber washer" or when the dispenser is mounted to a wall. Dispenser 10
can easily be converted to a spray unit by the replacement of the nozzle 20
and the attachment of a conventional spray head (not shown). Also stated previously, the concentration of the solution can be easily adjusted by the rotation of the eductor 24
in conjunction with the dilution adjustment member 50.
The low and high flow condition in combination with the dilution adjustment member obviates the use of multiple dispenser heads.
It will thus be seen that there is now provided a very versatile dispenser which can be utilized in not only a high and a low flow condition but also can be adjusted to vary the concentration of mixed solution. The dispenser 10
is produced economically so that once it is captively connected to a container, it is disposable.
It will also be seen that a good hand feel is provided by dispenser 10.
This is accomplished by placement of the handle 17
beneath body member 12
and outwardly from trigger 40
to allow placement of a thumb on trigger 40.
It will be seen that there is now provided a very versatile dispenser 10
which can be utilized with both chemical concentrates which produce pressure build up in the container 16
and those that do not. Any excess pressures are relieved through the vent member 7.
It should be noted that vent 7
is always in a gas open position even though the air vent passage 25
is closed as seen in FIG. 6. The dispenser can also be utilized not only in a high and low flow condition, but also can be adjusted to vary the concentration of mixed solution. The dispenser 10
is produced economically so that once it is captively connected to a container, it is disposable and/or recyclable. As indicated in the drawings, most of the components are composed of a molded plastic with polypropylene being preferred. This affords a living hinge feature for latch member 46
in trigger passage 48.
The dispenser 10
has been preferably described in conjunction with a latching feature for the trigger 40.
It is obvious that this is not an essential feature that can be eliminated. Neither is it essential that a back flow preventer be employed in the unit itself. This could be accomplished upstream in a supply line. Further, while the spout 22
offers the advantage of a hose attachment such as with the barbs 100,
this could be eliminated although it does further offer the advantage of a bucket attachment. Neither is it essential that the container connector 14
provides a captive use of the dispenser with the container. The dispenser 10
could be utilized with a refillable container. While dilution adjustment member 50
has been shown to have five passages, the number can vary from a single passage to as many as can be practically manufactured. In some instances, it may be desirable to limit the dispenser for flow through a single passageway. This could be accomplished by placement of a pin through body member 12
and a groove in eductor part 24
A dispenser (10) for dispensing different quantities of chemical concentrate into a stream of fluid from a concentrate container (16) comprising:
a body member (12) having a through bore with an inlet end adapted to be connected to a source of pressurized fluid at one end and an outlet at the opposite end;
a product passage (21) and a vent passage (25) communicating with the through bore and the container;
an eductor (11) mounted in the through bore;
a trigger member (40) constructed and arranged to slide the eductor (11) and open the vent passage (25);
a connector (14) for connecting the body member (12) to the container (16), the connector including a fastening member (3) or a cap member (68); the dispenser characterized by further comprising:
a vent member (7) connected to the body member (12) for relieving any excess pressure from the container (16), the vent member (7) being always in a gas open position even though the air vent passage (25) is closed.
2. The dispenser of Claim 1 wherein the vent member (7) is gas pervious and liquid impervious.
3. The dispenser of Claim 1 wherein the vent passage (25) is constructed and arranged to be in a closed position when the product passage (21) is closed.
4. The dispenser of Claim 1 wherein the eductor (11) is both slideable and rotatable.
5. The dispenser of Claim 1 further including a seal (23) constructed and arranged to seal both the product passage (21) and the vent passage (25).
6. The dispenser of Claim 1 wherein the eductor (11) is composed of first and second parts (24, 26), only one of which is rotatable.
7. The dispenser of Claim 6 wherein the first part (24) of the eductor is rotatable and extends from the body member (12).
8. The dispenser of Claim 1 further including a trigger member (40) connected to the body member (12) and eductor (11) to cause slideable movement of the eductor.
9. The dispenser of Claim 8 wherein the trigger member (40) includes a latch member (46).
10. The dispenser of Claim 1 further including a valve member (28) positioned in the through bore for regulating the flow of water through the through bore and the eductor.
11. The dispenser of Claim 1 wherein the trigger member (40) includes an essentially flat thumb engaging portion.
12. The dispenser of Claim 11 wherein the inlet includes a hose engaging member (18) extending over a portion of a finger engaging portion.
13. A method of venting a gas from a container employing the dispenser of Claim 1.
Ein Spender (10) zum Abgeben von unterschiedlichen Mengen an chemischem Konzentrat aus einem Konzentratbehälter (16) in einen Fluidstrom, aufweisend:
ein Körperelement (12), das eine Durchgangsbohrung mit einem zum Anschließen an eine Quelle von unter Druck stehendem Fluid vorgesehenen Einlassende an einem Ende und mit einem Auslass an dem entgegengesetzten Ende aufweist,
einen Produktdurchgang (21) und einen Entlüftungsdurchgang (25), die mit der Durchgangsbohrung und dem Behälter kommunizieren,
einen in der Durchgangsbohrung montierten Ejektor (11),
ein Aktivierungselement (40), das ausgebildet und angeordnet ist, um den Ejektor (11) zu verschieben und den Entlüftungsdurchgang (25) zu öffnen,
einen Anschluss (14) zum Anschließen des Körperelements (12) an den Behälter (16), wobei der Anschluss ein Befestigungselement (3) oder ein Kappenelement (68) aufweist, wobei der Spender dadurch gekennzeichnet ist, dass er ferner aufweist:
ein Entlüftungselement (7), das an das Körperelement (12) angeschlossen ist, um jeglichen übermäßigen Druck aus dem Behälter (16) abzulassen, wobei das Entlüftungselement (7) immer in einer Gasöffnungsstellung ist, selbst wenn der Entlüftungsdurchgang (25) geschlossen ist.
2. Der Spender gemäß Anspruch 1, wobei das Entlüftungselement (7) gasdurchlässig und flüssigkeitsundurchlässig ist.
3. Der Spender gemäß Anspruch 1, wobei der Entlüftungsdurchgang (25) ausgebildet und angeordnet ist, um in einer Schließstellung zu sein, wenn der Produktdurchgang (21) geschlossen ist.
4. Der Spender gemäß Anspruch 1, wobei der Ejektor (11) sowohl verschiebbar als auch drehbar ist.
5. Der Spender gemäß Anspruch 1, ferner eine Dichtung (23) aufweisend, die ausgebildet und angeordnet ist, um sowohl den Produktdurchgang (21) als auch den Entlüftungsdurchgang (25) abzudichten.
6. Der Spender gemäß Anspruch 1, wobei der Ejektor (11) aus einem ersten und einem zweiten Teil (24, 26) zusammengesetzt ist, von denen nur einer drehbar ist.
7. Der Spender gemäß Anspruch 6, wobei der erste Teil (24) des Ejektors drehbar ist und sich von dem Körperelement (12) aus erstreckt.
8. Der Spender gemäß Anspruch 1, ferner ein Aktivierungselement (40) aufweisend, das an das Körperelement (12) und den Ejektor (11) angeschlossen ist, um eine gleitende Bewegung des Ejektors zu bewirken.
9. Der Spender gemäß Anspruch 8, wobei das Aktivierungselement (40) ein Sperrelement (46) aufweist.
10. Der Spender gemäß Anspruch 1, ferner ein Ventilelement (28) aufweisend, das in der Durchgangsbohrung positioniert ist, um den Wasserdurchfluss durch die Durchgangsbohrung und den Ejektor hindurch zu regulieren.
11. Der Spender gemäß Anspruch 1, wobei das Aktivierungselement (40) einen im Wesentlichen flachen Daumenangriffsabschnitt aufweist.
12. Der Spender gemäß Anspruch 11, wobei der Einlass ein Schlaucheingriffselement (18) aufweist, das sich über einem Abschnitt eines Fingerangriffsabschnitts erstreckt.
13. Ein Verfahren zum Ablassen eines Gases aus einem Behälter unter Verwendung des Spenders gemäß Anspruch 1.
Distributeur (10) pour distribuer différentes quantités de concentré chimique dans un courant de fluide, à partir d'un réservoir (16) de concentré, comprenant :
un élément formant corps (12) ayant un trou traversant avec, en une première extrémité, une extrémité d'entrée apte à être raccordée à une source de fluide sous pression et, à l'extrémité opposée, une sortie ;
un passage (21) de produit et un passage d'évacuation (25) communiquant avec le trou traversant et le réservoir ;
un éjecteur (11) monté dans le trou traversant ;
un élément formant gâchette (40) construit et agencé pour faire coulisser l'éjecteur (11) et ouvrir le passage d'évacuation (25) ;
un raccord (14) pour raccorder l'élément formant corps (12) au réservoir (16), le raccord comportant un élément de fixation (3) ou un élément de fermeture (68), le distributeur étant caractérisé en ce qu'il comprend en outre :
un évent (7) relié à l'élément formant corps (12) pour relâcher un éventuel excédent de pression dans le réservoir (16), l'évent (7) étant toujours en position d'ouverture pour les gaz même si le passage d'évacuation (25) est fermé.
2. Distributeur selon la revendication 1, dans lequel l'évent (7) est perméable aux gaz et imperméable aux liquides.
3. Distributeur selon la revendication 1, dans lequel le passage d'évacuation (25) est construit et agencé pour être en position fermée quand le passage (21) de produit est fermé.
4. Distributeur selon la revendication 1, dans lequel l'éjecteur (11) peut à la fois coulisser et tourner.
5. Distributeur selon la revendication 1, comprenant en outre un joint d'étanchéité (23) construit et agencé pour l'étanchéité du passage (21) de produit ainsi que du passage d'évacuation (25).
6. Distributeur selon la revendication 1, dans lequel l'éjecteur (11) est composé d'une première et d'une seconde pièces (24, 26) dont une seule peut tourner.
7. Distributeur selon la revendication 6, dans lequel la première pièce (24) de l'éjecteur peut tourner et s'étend depuis l'élément formant corps (12).
8. Distributeur selon la revendication 1, comprenant en outre un élément formant gâchette (40) relié à l'élément formant corps (12) et à l'éjecteur (11) pour faire coulisser l'éjecteur.
9. Distributeur selon la revendication 8, dans lequel l'élément formant gâchette (40) comporte un élément formant loquet (46).
10. Distributeur selon la revendication 1, comprenant en outre un élément formant valve (28) placé dans le trou traversant pour réguler l'écoulement d'eau dans le trou traversant et l'éjecteur.
11. Distributeur selon la revendication 1, dans lequel l'élément formant gâchette (40) comporte une partie sensiblement plane destinée à recevoir un pouce.
12. Distributeur selon la revendication 11, dans lequel l'entrée comporte un élément d'engagement de tuyau souple (18) s'étendant partiellement sur une partie destinée à recevoir un doigt.
13. Procédé d'évacuation d'un gaz depuis un réservoir à l'aide du distributeur selon la revendication 1.