The invention relates to a method and apparatus for activating and emptying an exchangeable beverage preparation holder which is provided with at least one storage space with an expellable medium.
Such a method and apparatus for activating and emptying exchangeable beverage preparation holders is known from NL 1029155 (C). Here, a system is involved for preparing a predetermined amount of beverage, provided with an exchangeable holder and an apparatus with which the holder is detachably connected for expelling, for instance under pressure, an expellable medium, such as a concentrate, from a storage space of the exchangeable holder. For forming a discharge opening, a removable seal is provided (provided in the form of a breakable skin) which opens as a result of the increase of pressure in the storage space. During opening of the discharge opening, this removable seal is in direct communication with the expellable medium. It has appeared that under circumstances, the required minimum pressure for opening the seal is higher than the desired maximum pressure for dosing the expellable medium. It may happen then that an important part of the expellable medium flows outward in a rather uncontrolled manner directly after the seal has opened, which can adversely affect the desired mixing of the expellable medium for forming the beverage to be prepared. Further, during mixing, the volume can be so large that the impact or drawing-in of air for achieving froth formation becomes impossible. With underdosing of the concentrate in the mixing chamber too, the quality of the froth decreases in that the froth becomes coarser and more instable. In addition, it also mars the possibilities to produce a layered product such as “coffee in layers” (milk on the bottom, then coffee and milk froth on top).
It is an object of the present invention to eliminate or improve a drawback of the state of the art. It is also an object of the present invention to provide alternative systems which are easier in manufacture and use and which furthermore can be designed economically. Alternatively, it is an object of the invention to provide the public with at least a useful option. More particularly, it is an object of the invention to carry out forming a discharge opening independently of emptying the storage space.
To that end, the invention provides a method for activating an emptying an exchangeable beverage preparation holder which is provided with at least one storage space with an expellable medium, wherein the method provides for:
supporting the holder in a first position;
forming a discharge opening in the storage space;
moving the holder from the first position to a second, supported position; and
emptying the storage space by expelling the expellable medium through the discharge opening.
Owing to this feature, the steps of opening the storage space and emptying it for the purpose of dosing take place completely separately from each other. Thus, the possibility is created to have the expulsion of the content from the storage space proceed in a better controllable manner. As alternative, with this, it has also become easier to carry out breaking of the seal of the discharge opening with mechanical means, if desired.
The invention further provides in an apparatus for carrying out the method, wherein the apparatus is provided with a supporting receptacle for a holder, which supporting receptacle is movable between a first position in which the discharge opening of the storage space is not in direct communication with the expellable medium and a second position in which the discharge opening is indeed in direct communication with the expellable medium.
Specific embodiments of the invention, such as they are included in the dependent claims, are an integral part of this description.
In the following, the invention is further elucidated with reference to the Figures in the accompanying drawing.
a schematically shows an example of an embodiment of a known system;
b schematically shows the system of
c schematically shows the system of
a-5d show, in side view, four steps of the movement of the holder from the first position (5a) to the second position (5b); and
Presently, reference is first made to
The system is further provided with an apparatus 4 which is provided with, inter alia, a fluid dispensing element 6 which is designed for dispensing under pressure at least one amount of at least a first fluid, such as a liquid and/or a gas, more particularly such as water and/or steam. In this example, in use, the fluid dispensing element 6 dispenses water.
The exchangeable holder 2 is provided with at least one first storage space 8 which is filled with a second fluid, such as a beverage, a concentrate or a powder. In this example, a concentrate for preparing coffee is involved. The holder 2 is further provided with at least a first mixing chamber 10 and at least one outflow opening 12 which is in fluid communication with the first mixing chamber 10. The holder 2 is further provided with a fluid communication 14 between the first storage space 8 and the first mixing chamber 10. The holder 2 is further provided with at least one inlet opening 16 which is detachably connected to an outlet opening 18 of the fluid dispensing element 6. In
More particularly, it holds in this example that the restriction 20 is included in a fluid flow path 22 which extends via the outlet opening 18 of the fluid dispensing element 6 and the inlet opening 16 of the exchangeable holder 2 from the fluid dispensing element 6 to the first mixing chamber 10.
The first storage space 8 forms at least a part of a dosing device 24 as will be explained hereinbelow in further detail. In this example, this dosing device 24 is further provided with a needle 28 which, in use, is pierced through a wall of the first storage space 8 for supplying a third fluid to the second fluid in the first storage space 8 for dispensing the second fluid to the first mixing chamber 10 in a dosed manner. In this example, the dosing device 24 is further provided with a fluid dispensing unit 32 which is connected to the needle 28. The fluid dispensing element 32 and the needle 28 form part of dosing means of the apparatus 4. In this example, the fluid dispensing unit 32 is, at least via the needle 28, detachably connectable to the holder 2.
The apparatus 4 is further also provided with a control device 34 for controlling the fluid dispensing element 6 and the fluid dispensing unit 32. For controlling the fluid dispensing element 6 and the fluid dispensing unit 32, the control device 34 generates control signals ŝ which are supplied to the fluid dispensing element 6 and the fluid dispensing unit 32. In this example, the control device 34 is designed for controlling the fluid dispensing element 6 and the fluid dispensing unit 32 independently of each other.
The system 1 described so far works as follows. For the purpose of preparing a predetermined amount of beverage suitable for consumption, the exchangeable holder 2 is placed in the apparatus 4. Here, the first storage space 8 of the exchangeable holder 2 is placed under the needle 28. Also, as shown in
As with the system 1 according to the invention both the dosing of the concentrate in time can be controlled well and the dosing of the hot water in time can be controlled well, it can be effected that the concentration of the concentrate in the beverage can be accurately determined. Furthermore, it can be effected that the beverage that leaves the outflow opening 12 during the preparation thereof is of constant quality, i.e. the concentration of the concentrate in the beverage that is dispensed during dispensing can be kept substantially constant, if desired. The fact is that the flow rate of the water and the flow rate of the concentrate that are supplied to the mixing chamber 10 in this example can each, if desired, be controlled separately from each other. It therefore holds in this example that the system 1 is designed such that the fluid dispensing element 6 and the dosing device 24 can supply the first fluid and the second fluid, respectively, independently of each other to the first mixing chamber 10. This entails that the size of the flow rate of the first fluid and the period during which the first fluid is dispensed are independent (in this example through control of the control device) of the size of the flow rate of the second fluid and the period during which the second flow rate is dispensed. It further holds in this example, that the dosing device 24 involves a controllable and active dosing device for supplying the second fluid to the first mixing chamber by means of an increased pressure or force to the second fluid. Herein, an active dosing device is understood to mean that the second fluid flows through the fluid communication from the storage space to the first mixing chamber as a result of an excess pressure or force applied to the side of the storage space.
In the example, the system 1 is further provided with an air inlet opening 42. The air inlet opening 42 provides for the supply of air to the first mixing chamber 10 so that, in use, air is whipped into the beverage for obtaining a beverage with a fine bubble froth layer. Thus, for instance a café crème can be obtained. In this example, downstream of the restriction 20, the air inlet opening 42 is in fluid communication with the first mixing chamber 10. In this example, the air inlet opening 42 ends up, via a fluid communication 44, in the fluid flow path 22. In this example, it therefore holds that the air inlet opening 42 and the restriction 20 each form part of the apparatus 4. However, this is not required. It will be clear that the air inlet opening 42 and/or the restriction 20 can form part of the exchangeable holder 2.
After the preparation of the beverage, in this example coffee with a fine bubble froth layer, the control device 34 stops the fluid dispensing element 6. The control device 34 also effects that the third fluid is no longer supplied to the second fluid in the storage space and that the needle 28 is retracted from the respective wall of the first storage space 8, i.e. in a direction opposite to that of the arrow Pa. Here, it may be so that first, the control device 34 effects that the dispensing of the second fluid to the first mixing chamber is stopped and that after that, the supply of the first fluid (in this example water) is stopped. In this manner, the risk of the second fluid for instance contaminating the restriction 20 is reduced.
c shows a situation when the needle 28 is pierced through a wall of the first storage space 8 and the third fluid is supplied under pressure to the second fluid in the storage space 8. The situation shown occurs at the time when the control device 34 will stop the supply of hot water to the mixing chamber 10, will no longer supply the third fluid to the second fluid in the storage space 8 and will retract the needle 28 from the respective wall of the storage space 8 so that the holder 2 can thereupon be taken from the apparatus 4 again.
After this, a user can remove the exchangeable holder 2 and, if a new amount of beverage is to be prepared, can place a new exchangeable holder in the apparatus 4. The new exchangeable holder can be provided with a completely different type of second fluid such as, for instance, a milk concentrate. When, with the aid of the new exchangeable holder, milk is prepared in a manner comparable to that described for preparing coffee on the basis of coffee concentrate, in the prepared milk, no trace will be found of the type of the previously prepared type of beverage. The fact is that the first mixing chamber 10 forms part of the exchangeable holder and when a new exchangeable holder is placed in the apparatus 4, also, a completely new and hence clean first mixing chamber is placed in the holder. Therefore, contamination cannot be involved.
In the example of
In the example of
As already mentioned, for the purpose of the initial description of the system and its operation, the holder 2 in the
The blister pack 102 is further provided with the removable seal 138 for putting the fluid communication 114 in operation through removal of the sealing action of the removable seal 138. In the example shown, the removable seal 138 is a so-called “peel-seal” 138.
The fluid communication 114 is a channel which is not straight in longitudinal direction of the channel. In
The blister pack 102 is further provided with a chamber 180 which is in communication, via the inlet opening 116, with the first mixing chamber 110. Via this chamber 180, the outlet opening 18 of the fluid dispensing element 6 can be connected to the inlet opening 116 with the aid of, for instance, a needle which is pierced through the cover as far as into the chamber 180. After this, the first fluid can be supplied to the mixing chamber 110.
The holder 102 is further provided with a chamber 186. This chamber 186 is in communication, via a zone 187, where the material from which the blister chambers are deep-drawn is not attached to the covering, with a second peel seal 188 that is similar to the above-mentioned first peel seal 138. The peel seal 188 is contiguous to the storage space 108. The needle 28 (see also
In
As can also be seen in
In
a-5d show, in side view, in four steps, the movement of the holder 102 from the first horizontal position A to a second upright position D (via the intermediate positions B and C).
With the holder 102 in this position, together with the expulsion of the concentrate 150, also, the first fluid is supplied to the mixing chamber 110 with the aid of the third fluid (according to the arrow 154). It has appeared that in this upright position of the holder, the second fluid or concentrate 150 can be dosed well with a pressure of at most 0.3 bar.
With the described method and apparatus a dosing problem is avoided. It is no longer necessary to keep the pressure of the third fluid required for opening the peel seals within narrow tolerances as regards the dosing pressure to be limited. Further, also the volume of the plenum above the expellable second fluid in the storage space is no longer critical because no buffer is required for absorbing pressure peaks. For the length of the connecting channels, it also holds that this is no longer critical. The dosing pressure can be gradually built up from 0 bar and the dosing moment can thus be determined more accurately. Prior thereto, it can also be ensured that the breakable seals obtain their complete degree of opening.
It is supposed that with this the operation and the design of the invention clearly emerge from the preceding description.
However, the invention is not limited to any embodiment described herein, and, within the capacity of the skilled person, modifications are possible that are understood to fall within the scope of protection. Also, all kinematic inversions are understood to fall within the scope of protection of the present invention. Expressions such as “consisting of”, when used in this description or in the accompanying claims, should not be understood to have an exclusive or preclusive meaning, but rather an inclusive meaning. Expressions such as “means for . . . ”, “means (plural) for . . . ” etc. should be read as: “component formed for” or “element constructed for . . . ” and should be understood to also comprise the constructions described as equivalents. The use of expressions such as: “critical”, “advantageous”, “desired” etc, are not intended to delimit the invention. The properties that are not specifically or expressly described or claimed can furthermore be comprised in the construction according to the present invention without departing from the scope of protection.
Number | Date | Country | Kind |
---|---|---|---|
1033923 | Jun 2007 | NL | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/NL2008/050331 | 5/30/2008 | WO | 00 | 6/2/2010 |