HK1086173B - Device for pumping a liquid from a packaging or a container - Google Patents

Description

Device for pumping liquid from package or container

Technical Field

The invention relates to a device for pumping a liquid from a package by means of the action of a venturi tube (venturi) in order to dispense the liquid in a foamed or emulsified and, if necessary, heated form. Although the invention preferably relates to the field of food products for the production of milk-based emulsified beverages, the invention is in no way limited to the field of food products, but can be applied to all products that can be pumped from a package, for example cosmetics in the form of a pumpable cream, etc.

Background

By "device with venturi action" is meant a suction member for at least one pumpable state, typically a liquid, comprising a chamber into which an inlet duct of a fluid pressurized by a constriction enters in order to generate suction in at least one duct by the action of a depressurization at the outlet of the constriction, the duct connecting said chamber and the packaging containing the pumpable liquid, the carrier fluid being a gas or a liquid, such as water vapour, hot or cold water, air and mixtures thereof. The pumping member is capable of changing the pumpable liquid and dispensing it in the form of a foamable formulation, i.e. a liquid-gas mixture, or an emulsified formulation, i.e. a mixture of two immiscible liquids, and/or, if necessary, a heated formulation by transferring the heat of the carrier fluid to the pumpable liquid. The preparation thus obtained may be, for example, frozen milk, milk-based beverages such as flavourings, coffee, tea, chocolate, soup or preparations (preparations) for cappuccinos or maccachinos.

However, the invention will be described in the context of the manufacture of "cappuccino", that is to say when the device is combined with a pressure steam generator, usually a pipe system of an espresso coffee machine, and when the pumpable liquid is milk, to obtain an air-milk-steam frothed emulsion.

The most common way to obtain such a foamy preparation is to first pour the desired amount of milk into a container and then dip the steam outlet tube into the container while stirring from top to bottom to introduce the air needed to obtain the foam. The quality of the foam obtained depends on the skill of the user, who may also be subject to splatter when not professional. For reasons of hygiene, it was also observed that the tube and the container containing the milk had to be cleaned after each use.

In order to overcome some of the above-mentioned drawbacks, and in particular to obtain a more homogeneous froth quality, various nozzles have been proposed having a venturi effect, so that they can be used as an interface between the steam outlet of the espresso coffee machine and the milk container.

The simplest device with venturi action is described, for example, in US 4,800,805, which comprises an air intake tube fixed to the connection of the steam outlet, the opening of which is located below said outlet, the system being intended to be immersed in a container containing the desired amount of milk. The improvement described in US 5,335, 588 is to couple the air inlet means to a socket which itself can be fitted to the connection of the steam outlet, the system should always be immersed in the milk container.

European patent EP 0243326 describes an attachment with venturi action suitable for espresso coffee machines, comprising a large number of components having, in the suction chamber, a steam inlet under pressure which, through the action of a venturi, introduces air by means of a first duct and milk from a storage container included in the machine by means of a second duct, or sucks milk into a standard package through a dip-in nozzle. The mixture is then sprayed into a mixing chamber before emerging in the form of a foam.

The improvement proposed in US 5,265,519 corresponds to an accessory of simpler construction, which uses fewer components to be fitted for forming the nozzle with venturi action, but which also comprises a submerged nozzle for introducing milk. The device further includes a splash guard at the foamy formulation outlet.

European patents EP 0803219 and EP 0803220B 1 also describe a device for preparing frothed milk or espresso coffee by pumping with two pipes immersed in a container of the cardboard brick (briquetantonne) type and connected to a device having the action of a venturi tube. Such devices are suitable for containing large volumes of containers and therefore require refrigeration systems to store the milk.

In any event, after each "cappuccino" production, the submerged tube must be cleaned. It has also been found that if the production of cappuccino is carried out on a time-shared basis, non-disposable attachments need to be maintained on a regular basis and the amount of cappuccino produced per pass is also dependent on the level of concentration of the operator.

Disclosure of Invention

The present invention aims to overcome the drawbacks of the prior art described above by means of a new device which can be economically manufactured and which makes it possible to obtain, under improved hygienic conditions, a frothed, emulsified and/or heated preparation in the form of cappuccino, or another milk-based frothed beverage, said froth being of uniform quality and quantity.

To this end, the object of the invention is a device for pumping a liquid from a package for dispensing it in foamed or emulsified and, if necessary, heated form, comprising a venturi-type suction member suitable for being connected to the nipple of a generator of a pressurized carrier fluid, such as steam or hot water, comprising a body comprising a carrier fluid introduction channel opening into a suction chamber and at least one suction channel for sucking the liquid contained in the package, characterized in that said suction member comprises a nozzle and a fixing and opening device which connects said nozzle to said package and puts said suction channel in communication with the liquid inside said package.

The advantage of the invention is that it enables to quickly and easily combine a device that can be pumped and mixed to form a foam or, if necessary, an emulsion, with the packaging itself. The preparation is thus more suitable and hygienic.

Preferably, the package is closed by means of a cover and the fixing and opening device is adapted to be fixed to the cover, the nozzle being movable relative to the package between a closed position closing the package and an open position opening the package by the fixing and opening device, in which open position the suction channel is in communication with the liquid contained in the package. The opening is easy and no further operations are required to make the device of the invention functional.

The fixing and opening means are preferably fitted so that the suction channel communicates with the liquid contained in the package and liquid cannot flow to the outside. By "not flow out" is meant that the liquid contained in the package does not flow out of or spill out of the package without being subjected to the suction action imposed by the suction member having a venturi action. For example, the fixing and opening means are fitted with the packet so as to place the suction channel in communication with the vicinity of the bottom of the liquid. A hydrostatic pressure difference is thus created which keeps the liquid in the package without causing a possible flow.

In an embodiment of the invention, said fixing and opening means are means adapted to unseal the closed portion between said cover and the package. The fixing and opening means may be gripping means being part of the closure which breaks the closure between the closure and the package when the spout is moved relative to the package. The advantage of this solution is that it ensures that the opening is simple and reliable and that liquid does not run or leak outside the device. For example, a connector is provided that is adapted to connect the spout to the closure by clamping and/or sealing to a portion of the closure. The coupling piece has the advantage of enabling separation between the package and the nozzle, which two elements can be assembled at the time of preparation or, conversely, can be assembled beforehand, for example at the time of manufacture.

The present applicant has described in detail a package of the above type in an application filed on the same day and entitled "Emballoon connectable position discharge la distribution d' une pr arrangement liquid position dischargeefet venturi ", which is incorporated herein by reference.

In the above described embodiments the connector constitutes in part a spray conduit and comprises a transverse channel and a flange which can be clamped sealingly between the base of the nozzle and the flange by means of a threaded fastening or clamping clip at the end of the nozzle body.

In a possible alternative, the spout is sealed directly to a portion of the closure by a seal that is more resistant to breakage than the sealing means between the closure and package. In this case, the nozzle is assembled at the time of manufacture. Its advantages are easy implementation and low cost.

The device of the invention may constitute an assembly (system) comprising the suction means and the relative packaging, the whole assembly being disposable and thus not requiring any cleaning.

As will be appreciated from the detailed description below, the spout can be economically manufactured from a single piece by injection-compression moulding, associated with a package having the shape of a capsule made by thermoforming or injection, hermetically closed before use and comprising one or more portions of liquid that can be pumped into a container or a larger-capacity bowl. The nozzle may also be constructed from a plurality of nested or assembled elements.

According to a characteristic of the suction means, said suction chamber is located downstream of the restriction (constriction) and is connected upstream of the restriction with a mixing well chamber which itself communicates with the outside through an ejection duct. The restriction is typically configured to ensure that the carrier fluid passes at a high velocity, typically sonic, to create the pressure drop required to pump the liquid in the pumping chamber.

It is advantageous to provide the homogenizing means as part of the suction member or as part of the closure means of the package itself.

Thus, in order to form a homogeniser of the product to be sprayed, the assembly element may be extended into the mixing well chamber by means of a dome having a diameter slightly smaller than the diameter of said mixing chamber.

If the nozzle is sealed directly to a portion of the cap, the sealing portion defines an opening in the cap and the spray conduit is fitted for communication with the opening. A mesh may be placed through the opening to form a homogeniser for the product to be sprayed.

According to another aspect of the invention, the liquid suction channel preferably extends between the bottom of the nozzle and the suction chamber.

According to another aspect of the invention, the nozzle is located in a channel perpendicular to the plane of the closure of the package, one end of the channel being connected to the closure by a second sealing portion. The channels may occupy any location, for example integrally formed with the rim of the container. However, according to a preferred embodiment, the channels occupy intermediate positions.

According to a further aspect, another object of the invention is a device for pumping a liquid from a container for dispensing it in the form of a foam or emulsion and, if necessary, in a heated form, comprising a suction member constituted by a venturi-type nozzle suitable for connection to a nozzle of a pressure carrier fluid generator, said suction member comprising a body comprising a carrier fluid introduction channel opening into a suction chamber and at least one suction channel opening into said package for sucking the liquid contained in the container, characterized in that the supply channel is formed in the same body of said nozzle between its bottom and the suction chamber, and in that said spray duct passes through the bottom of said container, forming a sealed connection (joint) with respect to the liquid in said container.

In another possible alternative, the fixing and opening means are piercing means for piercing a portion of the closure. It may involve, for example, at least one rigid piercing portion comprising a liquid suction channel. This alternative is described in detail in a pending patent application entitled "Emballage jettable position la distribution d' une pr arrangement liquidized part", filed by the applicant on the same dayefet venturi ", which is incorporated herein by reference.

Drawings

Other characteristics and advantages of the invention will become apparent from a reading of the following description, given by way of illustration and not of limitation, with reference to the accompanying drawings, in which:

figure 1 is an exploded perspective view of a first embodiment of the pumping device according to the invention, showing the two components forming the device with venturi action before assembly on the packaging having the shape of a disposable capsule;

FIG. 2 is a bottom perspective view of a single capsule;

figure 3 is a top view of a device with venturi action suitable for use with the first embodiment of the pumping device according to a first variant of the invention;

FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4;

figure 6 is a perspective view of a coupling used in a variant of the device with venturi action shown in figures 3 and 4;

FIG. 7 is a bottom view of the connector shown in FIG. 6;

FIG. 8 is a cross-sectional view of the connector taken along line VIII-VIII of FIG. 7;

FIG. 9 is a top view of the first embodiment of the pumping device shown in FIG. 1 after assembly of the venturi-action device shown in FIGS. 3-5 with the package;

fig. 10 is a cross-sectional view taken along line X-X of fig. 9 before opening the capsule;

fig. 11 is a cross-sectional view taken along line XI-XI of fig. 9 before opening the capsule;

fig. 12 corresponds to fig. 10, but after opening the capsule;

fig. 13 corresponds to fig. 11, but after opening the capsule;

FIG. 14 is a perspective view of a second embodiment of a pumping device according to the present invention;

FIG. 15 is a radial cross-sectional view taken along line XV-XV of FIG. 14 prior to opening;

FIG. 16 corresponds to FIG. 15, but after opening;

fig. 17 and 18 correspond to a variant of the second embodiment, before and after opening, respectively; and

figure 19 is a partial perspective view of a third embodiment of a pumping device according to the present invention.

Detailed Description

Fig. 1 is an exploded perspective view of a first embodiment of a pumping device according to the invention, comprising suction means comprising a nozzle 1 with venturi action. The spout 1 is associated with a package 5 in the form of a closed capsule (bowl, cup) closed by a deformable cover 7, as can be seen in figure 2. The package 5 comprises a channel 9 from the bottom 11 to the cover 7 having an opening 8 concentric with the opening of the channel 9 and having a size substantially equal to or smaller than the opening of the channel 9. Typically, the capsule can be obtained in a single piece by thermoforming or injection of plastic. In the example shown, the overall shape of the package is annular.

The channel 9 receives the nozzle 1 on the side of the bottom 11 and the coupling piece 13 on the side of the cover 7, which is fitted to the bottom 14 of the nozzle 1 to form the fixing and opening means. In this first embodiment the connecting piece 13 is fixed to the nozzle 1 by screwing, but it can also be fixed by any other method, for example clamping (clipping). Also shown in fig. 2 by dashed lines are the clamping ring 15 of the closure 7 between the spout 1 and the coupling piece 13, and the closing ring 17 at the bottom of the channel 9, which will be described in detail later in connection with fig. 10-13.

Referring now to figures 3 and 4, it can be seen that the nozzle 1 has a generally cylindrical body 4, with the exception of the vanes 19, the function of which will be described later. The upper part of the mouthpiece 1 comprises a steam entry well (chamber) 21 for receiving a socket 22 (visible in figures 9, 10 and 11) of an adapter 23, which is located on the tube of a steam generator, for example of an espresso machine. In the example shown, the adapter 23 is of the "bayonet" type and it cooperates with two diametrically opposite recesses 10 and two grooves 12 formed in the upper part of the spout 1. The flap 19 can thus prevent the nozzle from rotating relative to the capsule.

Arranging the steam entry well chamber 21 in the body of the nozzle prevents the pumped liquid from re-rising, which might be caused by a vortex in the suction chamber 25, thus keeping the steam entry pipe out of contact with the liquid and this is always very effective.

Referring now particularly to fig. 4, it can be seen that the steam entry well chamber 21 communicates with the suction chamber 25 by means of a restriction (constriction) 27 of very small diameter which allows the carrier fluid to pass at or at least close to the speed of sound. The restriction 27 reduces the cross-section, which thus makes it possible to generate the pressure drop necessary to achieve the venturi effect in the suction chamber 25. Also, the steam inlet well 21 and the restriction 27 may be formed in a member separate from the rest of the nozzle, or formed with the steam inlet pipe when the steam inlet pipe is engaged in the nozzle.

A throttle (constriction) 26, having a larger diameter than the restriction 27, is located downstream of the suction chamber 25, and can regulate the flow rate of the liquid to be sucked therethrough in accordance with the velocity. The suction chamber 25 itself communicates with the mixing well chamber 29 by means of a throttle 26. An air intake channel 31 and an intake channel or pumping channel 33 for the liquid in the package also open into this suction chamber 25.

As is known, the final foam quality depends on many factors, mainly related to the air flow, which can be controlled by very precisely calibrating the air intake channel 31. It should be noted that the diameter of the air introduction channel is of the order of a few tenths of a millimeter, and therefore such an air introduction channelThe calibration is relatively accurate, in particular because the nozzles are mass produced, for example by injection-moulding of plastics, such as polypropylene (PP), polystyrene or other suitable plastics. This is why a larger diameter mouth 32 is provided at the air inlet, which mouth can be fitted with means enabling a better control of the air flow. For example, a permeable membrane, such as a permeable membrane 32a with controlled porosity, fixed to the port 32 is fitted. Such as that provided in Atofina (Paris) under the trademarkOr a trademark supplied by Gor corporation (usa) asThe film is obtained from the product series of (1). The membrane 32a may also be selected to have a porosity that is more suitable for a given steam generator pressure without changing the nozzle body. It has also been observed that the maximum diameter of the mouth 32 can be easily blocked if the nozzle is to be used with only the purpose of heating a liquid and not to create an emulsion.

It is also seen in fig. 5 that a liquid introduction channel 33 is formed inside the body 4 of the nozzle 1, in the example shown, at the bottom 14 of the nozzle 1, supply ports 34a, 34b, 34c being provided for communication with the inside of the package containing the liquid when the device is in the pumping configuration.

When the spout is provided for mating with a closed package (see fig. 1 and 2), the vertical exterior of the spout 1 further comprises a recess 35 capable of equalizing the pressure inside the capsule when pumping the liquid in the package. The lower part 36 of the recess 35 is arranged to communicate with the interior of the package containing the liquid when the device is in the pumping configuration.

It will also be seen that the end of the mixing chamber 29 includes internal threads 30 for securing the connector 13, and therefore an embodiment of the connector is described below with reference to figures 6-8.

The connector 13 comprises a body 40 comprising a flange 42 at its base and a dome 44 at its other end. The dome 44 is connected to the body 40 by a constriction 46. A spray conduit 48 for the heated and/or emulsified liquid passes through the body 40 below the constriction 46 (see figure 8). The body 40 comprises, near its bottom, an external thread 41 which makes it possible to screw the connecting piece 13 onto the corresponding thread 30 of the spout 1. In order to facilitate this screwing, the flange 42 comprises two handling holes 43, although other screwing means are also envisaged, including non-breakable (anti-breakage) means. In fact, for reasons of hygiene, it is also desirable that the spout 1 cannot be removed and reused after the first use. Furthermore, such indestructibility can be obtained by using other means that enable fitting of the nozzle 1 and the connecting piece 13, for example by clamping. Finally, it has been observed that the bottom of the dome 44 has a diameter slightly smaller than the internal diameter of the mixing chamber 29, so as to force the emulsion to pass between the wall of the mixing chamber 29 and the bottom of the dome 44, improving its foaming characteristics, in particular homogenizing the formulation, and limiting the risk of spillage.

Referring now to fig. 10-13, which are partial sectional views taken along lines X-X and XI-XI of fig. 9, the function of the spout 1 according to the first embodiment described above when fitted to a capsule 5 and closed by a cover 7, as shown in fig. 1 and 2, for example, will be described. In these figures it can be observed that the capsule 5 comprises a certain number of ribs, some of which 6a are mainly intended to reinforce the capsule 5, while other ribs 6b are intended to guide the fins 19 of the spout 1.

Fig. 10 shows the nozzle-capsule system before opening, that is to say the contents of the capsule 5 are not in communication with the liquid introduction channel 39. In this figure, the nozzle-capsule system comprises an adapter 23 comprising bayonet means which can connect the socket 22 to the steam entry well 21 in the nozzle 1 through an opening 24.

The ring 15 of the cover 7 is sealingly clamped between the spout 1 and the connecting piece 13, and the bottom of the channel 9 is sealingly bonded or closed by a securing ring 17 of the cover 7 surrounding the ring 15.

It is also conceivable to seal the ring 15 to the bottom 14 of the spout 1 or to the flange 42 of the connecting piece 13. In this position, the liquid is completely isolated from the outside, the liquid supply ports 34a, 34b, 34c (fig. 5) and the gas supply port 36 for equalizing the pressure are all located above the ring 17, and the ring 17 is sealingly bonded to the closure 7. In the preferred embodiment shown in fig. 10, it can be seen that the length of the channels 9 is such that the closure 7 is convex before opening.

As shown by arrow F in fig. 12, the ring 17 is disengaged when the capsule 5 is moved axially relative to the nozzle 1. The closure 7 is thus concave. Thereby, on the one hand, the liquid supply holes 34a (34 b and 34c not visible in the cross-section) are put in communication with the liquid contained in the capsule and, on the other hand, the lower part 36 of the recess 35 is put in communication with the outside air A, thus equalizing the pressure inside the capsule 5. As can be seen in fig. 13, in the open position, by bringing the shoulder 20 at the bottom of the nozzle into contact with the lower edge 9a of the channel 9, the travel of the nozzle 1 is limited, which avoids tearing the cover 7 due to too violent movement. In this configuration, the liquid contained in the package 5 cannot freely circulate in the liquid introduction channel 33 due to the pressure difference existing between the suction chamber 25 and the liquid surface in the package 5, wherein the pressure in the package 5 is naturally lower than the pressure in the package 5 when opened. The liquid is not able to flow freely through the channel 33 to the outside of the package 5. The system is thus very clean.

In this open position, the pressure-carrying fluid, for example steam, flows into suction chamber 25, creating a pressure drop in liquid intake channel 33, which communicates with the interior of package 5, and in air intake channel 31, so as to pump the liquid in package 5 by venturi action, so that the pressure in the suction chamber becomes lower than the pressure above the liquid in package 5. The liquid is thus injected into the mixing chamber 29 by means of the throttle 26 and, after homogenization, is distributed through the injection conduit 48, in this example in the form of a hot emulsion. Recess 35 and port 36 allow package 5 to be filled with air while the liquid in package 5 has been evacuated and ensure that the pressure inside the package remains at a pressure higher than the pressure drop created to ensure continuity of pumping and prevent collapse into the interior of package 5. When the carrier fluid stops entering, the suction chamber 25 returns again to a pressure slightly higher than the pressure of the liquid in the package 5, which ensures that the liquid is confined in the channel 33 and does not flow outside. The slight vacuum created in the headspace of the package 5 is sufficient to confine the liquid in the channel 33.

A second embodiment of a pumping device according to the invention is shown in fig. 14-16, in which elements that are the same as those described in connection with the previous figures are denoted by the same reference numerals.

According to this second embodiment, the nozzle 2 can be realized with two parts 50, 52 nested, for example by clipping (not shown). The nozzle comprises a first hollow outer body 50, through the bottom 51 of which the introduction channel 21 of the pressure-carrying fluid passes, and through which bottom 51 the air introduction channel 31 also passes if it is desired to generate foam. As previously mentioned, the outer wall 49 also includes an air intake passage 35 for equalizing the pressure within the package as the liquid is pumped.

The second inner body 52 includes a hollowed-out portion at its center defined by a sidewall 54 and a bottom 56 that form the mixing well chamber 29. The throttling channel 26 passes through the floor 56. When the second body 52 is embedded inside the first body 50, the throttling passage 26 communicates with a suction chamber 25 formed between the bottom 51 of the outer body 50 and the bottom 56 of the inner body 52. The outer wall of the second body 52 comprises a recess connecting its bottom 53 and the suction chamber 25 to form an introduction channel 33 for the liquid to be pumped against the wall of the outer body 50. As in the second embodiment, the bottom 53 of the inner body 52, and possibly also the bottom of the outer body 50, is firmly sealed to the ring 15 of the cover and the bottom of the channel 9 is sealed to the ring 17 surrounding the ring 15 in such a way that a small lifting force is generated. In this second embodiment, it can be observed that the nozzle no longer comprises a tab, but only a guide flange 58.

An advantage of this embodiment is that the manufacture of the nozzle can be simplified, which can be easily achieved with two moulded pieces of relatively simple shape.

The second embodiment also differs from the first embodiment in that the spray ducts 48 are closed by a grid 59 which homogenizes the preparation to be sprayed and improves the quality of the preparation. According to this embodiment, the grid may be formed by a separate (separate) member or may be formed integrally with the cover.

Figures 17 and 18 show a variant of the above described embodiment which differs from the above described embodiment in that the homogenizing device is constituted by a dome 44 which is located in the mixing well chamber 29 and is integral with the inner wall 54 of the inner body 52. The dome 44 is constructed substantially the same as the dome of the coupling 13 shown in fig. 6-8. In this case, a grid 59 may also be present.

Fig. 17 shows the device in the closed position in a radial section through the liquid introduction or pumping channel 33, and fig. 18 shows the same device in the open position in a section perpendicular to fig. 17.

Fig. 19 is a partial perspective view of a third embodiment of a pumping device according to the invention, in which the spout 3 passes through the bottom of an open rigid container 60, in the shape of a bowl which may include a scale 61 which can measure the amount of liquid poured in or, conversely, know the amount of liquid consumed. As described above, the nozzle 3 may be fixed with the connecting member 13. It may also be simpler to insert or glue the nozzle into a hole made in the bottom of the bowl 60. The difference between this embodiment and the previous one is that the suction mouth of the spout 3 is always in communication with the liquid contained in the container and that the container is open so as to omit the pressure-equalizing tube.

For economic reasons, the body of the nozzle or the elements constituting the nozzle are preferably manufactured by injection-moulding of plastic.

The term "sealing" in this specification means all direct or indirect connections between two members, such as welding by thermal conduction, induction, photon or ultrasound, bonding by adhesive, or a combination thereof.

The term "liquid" in this specification is meant in a broad sense to include all fluid phases or combinations thereof, which are solid or non-solid and which are incompressible or nearly incompressible and which are capable of being pumped through a pipe.

Various modifications may be made by those skilled in the art without departing from the scope of the invention, such as adapting the outer shape of the spout to the particular shape of the container containing the edible liquid.

The device is particularly suitable for pumping an edible liquid, such as milk or a milk-based concentrate, from the package.

Claims (20)

1. A device for pumping a liquid from a package for dispensing it in heated, frothed or emulsified form, comprising a venturi-type suction member adapted to be connected to a nozzle of a pressure carrier fluid generator, said suction member comprising a body (4) including a carrier fluid introduction channel (21) opening into a suction chamber (25) and at least one suction channel (33) for sucking the liquid contained in said package (5), characterized in that said suction member comprises a nozzle (1, 2, 3) and fixing and opening means (13, 15, 30) adapted to connect said nozzle (1, 2, 3) to said package (5) and to place said suction channel (33) in communication with the liquid inside said package (5), and said fixing and opening means (13, 30) is adapted to fix the nozzle (1, 2) on a closure (7) of the package (5), the nozzle (1, 2) being movable with respect to the package (5) between a closed position, in which the package (5) is closed by the closure (7), and an open position, in which the package (5) is open, in which the suction channel (33) is in communication with the liquid (L) contained in the package (5).

2. Device according to claim 1, characterized in that said fixing and opening means (13, 30) are fitted so that said suction channel (33) is in communication with the liquid contained in said package (5), while the liquid cannot possibly flow towards the outside.

3. Device according to claim 2, characterized in that said fixing and opening means (13, 30, 15) are means suitable for unsealing the closure between said cover (7) and the remainder of said package (5).

4. A device according to claim 1, 2 or 3, wherein said fixing and opening means (13, 30, 15) comprise a connecting piece (13) suitable for connecting said spout (1) with said closure (7) by clamping and/or sealing to a portion of said closure.

5. Device according to claim 1, 2 or 3, characterized in that said fixing and opening means (13, 15, 30) constitute a sealing joint between said cover (7) and the bottom (14) of said spout (1).

6. A device according to claim 1, 2 or 3, characterised in that the suction chamber (25) is located downstream of the restriction (27) and is connected by a restriction (26) to a mixing well chamber (29) which itself communicates with the outside by means of an injection conduit (48).

7. Device according to claim 5, characterized in that said sealing joint defines an opening (8) in said cover (7), said ejection duct (48) being in communication with said opening (8).

8. Device according to claim 7, characterized in that a grid (59) forming a homogenizing means for the product to be sprayed extends through the opening (8).

9. Device according to claim 1, characterized in that it further comprises an air introduction channel (31) opening into the suction chamber (25).

10. Device according to claim 9, characterized in that the air intake channel (31) to said suction chamber (25) comprises an inlet (32) with a section greater than the rest of said channel (31), said inlet (32) being blocked by a permeable membrane (32a) capable of controlling the air flow.

11. Device according to claim 1, characterized in that the suction channel (33) extends between the bottom (14) of the nozzle (1, 2, 3) and the suction chamber (25).

12. Device according to claim 5, characterized in that said nozzles (1, 2) are placed in a channel (9) perpendicular to the plane of the cover (7) of said package, one end of the channel (9) being connected to said cover (7) by means of a second sealing joint (17).

13. Device according to claim 12, characterized in that said nozzle (1, 2) further comprises, between its body (4) and said channel (9), a passage (35) capable of introducing air into said package through a port (36) so as to equalize the pressure in the open position.

14. Device according to claim 13, characterized in that the mouth (36) of the pressure equalizing channel (35) is located below the channel (9) when the package is in the open position.

15. Device according to claim 12, wherein the upper portion of the spout (1) comprises a plurality of fins (19) cooperating with ribs (6b) extending peripherally from the opening of the channel (9) to prevent rotation of the spout (1) with respect to the package.

16. Device according to claim 1, characterized in that it further comprises a package (5), said device being disposable together with the package.

17. A device for pumping a liquid from a container (5) for dispensing it in heated, frothed or emulsified form, comprising suction means including a venturi-type nozzle (1) suitable for being connected to a nozzle of a pressure carrier fluid generator, said suction means including a body (4) comprising a carrier fluid introduction channel (21) opening into a suction chamber (25), characterized in that it comprises at least one suction channel (33) opening into the bottom of said container (5) for sucking the liquid contained in said container (5), said suction channel (33) being formed in the same body (4) of said nozzle (1) between its bottom (14) and said suction chamber (25), and an ejection duct (48) passing through the bottom of said container (5), which is a hermetically closed capsule, and the device can be discarded together with the container.

18. Device according to claim 17, characterized in that the suction chamber (25) is connected by means of a throttle (26) to a mixing well (29) which communicates with the outside by means of an injection conduit (48) located at the bottom (14) of the body (4) of the nozzle (1).

19. Device according to claim 17, characterized in that said nozzle is constituted by a body realized in two parts (50, 52) comprising a first outer body (50) crossed by a carrier fluid introduction channel (21) and by an air introduction channel (31), and a second inner body (52) embedded in the first outer body and crossed by a throttling (26) communicating with said suction chamber (25) formed between said first and second bodies (50, 52), the suction channel (33) being formed between the walls of said first and second bodies.

20. Device according to claim 19, characterized in that a dome (44) is formed at the bottom (53) of said inner body (52), which dome is integral with said inner body.