HUE025614T2 - Extraction device and sealing system - Google Patents

Description

otracxiok de vice ani> sealing system

The invention relates to extraction apparatus for preparing drinks or likewise, from m extraction material contacted in a capsule, for example ground coffee. 1' also relaies to a sealing system tot such an extraction material and to a brewing module.

Extraction apparatus for preparing drinks or likewise from m «xtaction material present Is a portion packaging are known tor example as coffee machines or espresso machines and are enjoying an Increasing popularity, in many eotawspondiag systems, the portion packagings are designed as capsules, in which die extraction material is sealed: m an airtight manner. For trie extraction, as a rule the capsule or a separate container present in the inside of the capsula is pierced at two sides lying opposite one another At. the first side, an extraction fluid generally hot -water - is introduced by way of an injector device (introduction device). At the second side, the extraction product is led ml of the capsule by way of an extraction device (discharge device). This is effected in a so-ealkd brewing module. Such a brewing module comprises a brewing chamber, in which the capsule is received. Brewing modules, with which the capsule is inserted into the brewing module, and the brewing chamber is closed, are particularly popular, wherein with the renewed opening of the brewing chamber after the brewing procedure, the capsule is automatically removed íróra the brewing chamber and is ejected into a capsule coatamer. Such brewing modules with m automatic capsule ejection are often designed as hormonra! brewing modules, i,e, the capsule feed Is effected írom above, the closure of the brewing chamber is a horizontal .relative movement of two brewing chamber parts, the brewing fluid flows essentially horizontally' and the capsule container is formed below the brewing chamber, Likewise known are so-called piston carrier systems, with which the brewing chamber is firmed between a water injector and a pishmwlfe a pivot lever.

On brewing the drink, the extraction fluid is often introduced into the capsule under a large pressure of for example 10-20 bar.. Thereby, it: is impeataht tor the extracMon fluid to get through the capsule to the: second side and for it not to flow past the capsule due to the high pressure. For this reason, the capsule must be sealed with respect, to the mteeior de vice -and the extraction device, wherein these seals can be combined.

Capsules of common apparatus have. a. conical beaker-like basic shape with a laterally projecting collar. This collar according to a first common procedure has an important function on sealing. An annular seal hears on the endrauriace i» the region of the collar, wherein the collar is likewise supported by a likewise annular counter-element, in a manner such that the collar is damped between the seal and the counter element. According to a second common procedure, the sealing is effected by a snug fit, by way of the conical lateral surface of fee beaker, which is circular in. cross section, being pressed in a surfaced manner against a correspondingly equally shaped conical surface of «.brewing chamber receiver. The cellar of the beaker is necessary for holding and positioning 'the capsules on mirodming ik& capsule into this brewing chamber receiver.

In DE-Τ-δΟί 26 945, a brewing chamber consisting of one stationary and one moveable part, according to the first procedural manner is shown.. The moveable part comprises a container with a rigid, metallic housing, a piercing through system attached around the introduction opening, and a dynamic seal mounted to the extraction side. The stationary part comprises amongst other things an annular counter element on which the collar of the capsule comes to lie on. The capsule .is inserted into said container before the extraction process by moving the moveable part to the stationary part The dynamic seal rests tightly against the shoulder of the stationary part because the housing is moveably mounted and the seal allows a movement of the housing, WO 201:0/09-2543 uses a slightly different procedural .manner for positioning and seaiag the capsule. Therein, while closing the brewing chamber, the collar of the capsule is deformed mechanically in such a way that a sealed system is created.

The two mentioned procedural marmots have proven, their worth, but they are only suitable ihr capsules of the mentioned conical, beaker shape, with a collar This shape has the disadvantage that it takes up rather a lot of space m storage and transport and besides that, depending on the material, the collar can be easily damaged during mechanical use.

It is the object-of the invention, to provide an extraction apparatus with a sealing system, which does not depend on this beaker shape with a circnnifcrential collar, is suitable for different capsule shapes and different brewing chamber mechanisms and which nevertheless assumes the sealing: fonction reliably.

This object is achieved by the invention, as is defined in the patent claims,

An extraction apparatus of the type discussed here is in particular suitable for brewing a dirink. It is a coffee machine, for example. The extraction apparatus comprises a brewing module for meowing a capsule with an extraction material The brewing module comprises a first biwmg: module part and a second brewing module part, which is movable relative to the first brewing module part, wherein the first and the second brewing modulo part form a discharge device for the discharge of the extraction product out of the capsule, and an introduction device for introducing an extraction fluid into the capsule, wherein the introduction device comprises at least one piercing ftp. The extraction apparatus further comprises a fluid pump for pumping extraction fimd and, optionally, a heating for heating the extraction fluid before introduction into the capsule, The extraction fluid lu many cases us water, and if the extraction, apparatus is a eoilee machine or tea machine, it Is also called "brewing. Stud",

Such an cxtectiod apparatus according to the invention is essentially characterised 1» tfeat it comprises a sealing system with an elastically deformable seal which surrounds the pjercing bp or the piercing tips of the introduction device and which comprises a seal collar which encompasses the capsule, in a positioning and holding manner and at least one cimumforential sealing lip and/or a.circumferential scaling head, said sealing lip and/or sealing bead bearing on a surface of the capsule hi a line-like or ship-like manner -and pressing the capsule wall agamst a capsule interior. With regard to the capsule wall being pressed against the capsule interior, this .means that no supporting eoimkr-clemeat is present, at the location of the sealing tip or of the sealing bead, but that the capsule wall by way of the sealing lip or the sealing bead in contrast is quasi pressed against the capsule filling.

Thereby, the seal is held in the extraction apparatus, fin particular m the brewing module of this) such that the exact position of the capsule Is determined by the seal, hr particular, m contrast to the state of the art, the extraction apparatus is tree of a seat which is formed by an in particular non-elastieally deformable element which partly surrounds the capsule -and bears on a circumferential wall in a surfaced manner, In preferred embodiments, it is in particular lice of non-elastic elements which hear on the capsule wall and which bear on the capsule, between m injection plate of the mtroduction device (plate, from which the piercing tips project and against which the capsules is pressed on piercing) and the seal.

This idea is based on the rather surprising realization that, with the pressures required for brewing a drink, for example an espresso, the use of such a circumferential lip seal is possible m orderte attain the necessary sealing function, without the need for an anvil or snug fii A seal of the described type is present at the introduction device. Such an injee&sn-skfe seal has the purpose of preventing brewing fluid to he introduced into foe capsule from taking a different path other than being pressed into the capsule, Ihe pressures occurring at the injection side are particularly large. Tue invention is particularly advantageous in combination with injection systems, in which, as described in -detail in FCÏ/CH20IÛW0Q98, the brewing fluid Is not Injected through a piercing tip provided with a channel. In contrast, with such systems a piercing lip serves for piercing the capsule. The brewing fluid is introduced into the capsule in the. proximity of the piercing dp and through the opening produced by the piercing tip, hut past the piercing tip. In pariicnlar, an introduction opening tor the brewing fiúid can then Ik in a plane, on which the capsule wall bears. Such systems have been found to he particularly favourable with regard to piercing systems, and in particular with regard, to piercing: systems of the more environmentally .friendly capsules with a plastic wall. They however have the effect that the entire presste® of the brewing lesd bears on the sealing system, o&liko the case os infecting through a tip directly into the inside of the capsule, where a part of the pressure is damped by the extraction material. to. addition, the sealing system comprises preferably also ors the side of the discharge device a seal of the described type with: at least: one cfeeiunftrential sealing lip and/or a eiretimferefeial sealing bead, said lip and/or bead bearing m a line-dike or strip-like manner on -a surface of the capsule and pressing the capsule wall against the inside of the capsule. Preferably, such an extraction-side seal also comprises a seal collar surrounding the capsule its a positioning manner. Such an extraction-side seal surrounds extraction-side piercing tips with assigned discharge openings which for example are likewise locally separated from the piecing tips, and has the purpose of feeding fluid exiting from the capsule to the envisaged conduit and lot preventing it taking another path past, the capsule.

The injection-side seal, and optionally, also the extraction-side seal are fastened on the introduction device, or fee discharge device respectively, and m a movement of fee two brewing module parts relative to one another (thus in particular of fee introduction device relative to fee discharge device) fee seal or seals are moved along with them.

The injection-side seal and, as the case may be, also the eutraetioswide seal is elastic, in particular is manufactured írom an elastomer. Materials with Shore hardnesses between 50 mai 90 Shore A, in particular between 70 and S5 Shore A have been found fe> be particularly favourable for the injection-side seal. The hardness of an extraction-side sea! can be fee same as the hardness of the injection-side seal, or it can he lower. In particular,, the extraction-side seal can have a Shore hardness of between 55 and SO Shore A,

It is often advantageous if fee seal is designed such that at least one sealing lip and/or a sealing bead encompasses the capsule along a circumferernial surface arid thereby on account: of its elasticity is pressed against the capsule wall in such a manner that fee capsule is held by fee seal due to this bearing contact offne sealing lip/s) or fee sealing bead(s). A construction which comprises a plurality of eircumfereirtia! sealing lips and/or sealing beads, thus at least two sealing lips, at least in each case one sealing lip and one sealing bead, or at least two sealing beads, has been ionná to be likewise particularly favourable, depending on the situation (in particular for the injection-side seal, but in embodiments as the case may be also for the extinction-side seal). The searing lip(s) or scaling hcadfs) thereby -due to their elasticity press the capsule wall against a capsule interior, wherein a recess is arranged in each ease between two consecutive sealing lips or sealing beads, in a manner such that a circumferential cavity is formed between the consecutive sealing bps or sealing heads sod foe capsule, in. the operating condition.

With circularly cylindrical or conical capsules, the eiretmifecennal surface is tunned by the lateral surface and with a cube-shape or parallelepiped shape by four peripheral sides (winch is. many embodiments are different from foe side / the sides, through which the brewing tiuui is injected: and through which the brewed drink is discharged oaf of the capsule), A seating hp or a sealing head can bear on the capsule wall also at a location, in which foe capsule wall has a non-constant angle to a capsule axis and brewing chamber axis, for example at foe location of a transition between an end-fhee and foe circumferential staiace.

In combination with foe ideal of encompassing the capsule along a circumferential surthce, it is particularly favourable for the injection-side seal and/or for the extinction-side seal if at least one of the circumferential sealing lips or sealing beads is pressed against an end-face of the capsule, and at least one of the circumferential sealing lips or sealing beads is pressed against a circumferential surface,

The brewing chamber of an extraction apparatus according to the invention can have different shapes, in particular circularly cylindrical or cube-shaped {such as for example in P€'f/CH2Ölö/ÖÖ0Ö97). Also corneal: - beaker-like capsules - with or without edge and with or without curvature of one of the end-faces (of a surface In which foe capsule is pierced) inwards -are not ruled out

According, to one design, the lip or at least one of the lips can project inwards to foe location of foe fluid' injection or fluid extraction, m particular if it bears on the capsule in foe region of the end-face of this. The fluid pressure would then press foe sealing lip additionally to foe effect to. foe ekistitcy of this, onto the capsule, for example m the region of foe end-face.

In combination with a seal collar which encompasses foe capsule in a eheuntfereudal manner, foes such an inwardly protecting sealing lip provided for bearing on the end-face can project inwards foam the collar in foe proximal region.

Such a sealing lip, which ín padieniar projects inwards ip the region of the end-face, is preferably wing-like or lobular in cross section.. A design of a seal with an inwardly projecting lip in the region of foe end-face and a plurality of sealing bps or sealing heads with cavities therebetween in foe région of foe circumferential surface and/or in the transition between foe end-face and foe eiretauferential surface Is particularly preferred for foe infection-side seal and/or for foe extraction-side seal This effects a multi-stage seal which in particular on the injection, side is advantageous, sistee there fee pressure is greatest; and the seating is a particular challenge, The inwardly protecting lip is thereby the first step, which is arranged where a large pressure prevails, which on account of the design of fee seateag fig supports the sealing effect. The lips/heads, watch aa* present m the region of the cimtunfeential surface or in the transition, serve as further steps, winch, together with the cavities lying therebetween, prevent residual fluid portions, which pass the first stage, for example during the build-up of pressure or possibly also thereafter, front being able to exit. Moreover, they effect a. stepwise pressure reduction in case that the first stage docs not withstand the complete pressure dlfeence between the fluid pressure and the sttrrouadmg pressure. in particular, tire irueetiomside seal is preferably designed such drat it alone, on account of its elasticity and without an additional clamping force of the capsule, holds this m an encompassing manner, so that, the three for pulling the capsule out of the encompassing seal exceeds the intrinsic weight of the capsule, and specifically preferably also when the capsule is completely impregnated with fluid A design which isi saw-tooth in cross section has been found to be particutely fayonrahie as a shape of sealing lips in tire region of the seal collar encompassing the capsule,: for foe injection-side sein. Such a saw-tooth shape unifies the effect of an inwardly projecting, lip which due to the occurring pressure increasing the sealing effect, is increasingly pushed against foe capsule, and the clamping effect, by way of it having a greater stiffness in comparison to an inwardly projecting, lobular lip . This greater stiffness permits a reliable, encompassing reten tion of the capsule.

After the brewing procedure, foe brewing chamber is opened, in particular doe to the relative movement of the introduehon device and the discharge device, and foe capsule in ejected, for example into a capsule container which in envisaged for this. An extraction apparatus according to the invention, then according to a group of preferred embodiments, is designed such, that a seal encompassing the capsule - in particular the ligne tinn-srde seal - on opening toe brewing chamber, holds die capsule and thus has the effect that the capsule us pulled out of the oppositely lying (in particular the exhuetion-aide) piercing tips and, as the ease may be, out of foe encompassing seal which is present os the respective other side (in particular extraction side). Additionally , the. extraction, appmte comprises a wiper means, by way of which after a part of foe relative movement, the capsule is hold back relative to foe moving part (in particular introduction device), by which, means it can fee released from the encompassing seal and can tall downwards for example, The wiper means can for example comprise· webs which project laterally inwards into the brewing chamber and which during the relative movement are moved inwards or which on account ox a bead, a eooicity or other deviation from foe purely cylinder shape of the: capsule, only engage m the capsule alter a part, of the relative movement. A.efefee or tea brewiag system,, apart flora an extractkm apparatus of the type described in detail m 'this text and in the drawings, also comprises a portion, capsule with an extraction material. The portion capsule is particularly of the type wiá a plastic wall whicb directly surrounds the extraction material, thus without stabilising parts or paris acting as a biter, winch he therebetween, he. the capsule constats of the capsule wail said the extraction material. A specially preferred capsule wall material ts polypropylene (PI5). Other materials are also conceivable, in particular other foodstuff-corapatible plastics. The wail thickness tn particular with polypropylene capsules is preferably between 0.1 nun and OtS nun, lor example between 0.2 turn and 0.4 mm, in particular between 0.25 ram and 0.35 mm. The capsule nlkr the Filing of the capsule body wife the extraction material is closed by a cover, in particular wife a method, wife which a projecting edge oi fee capsule body and fee cover are separated away simultaneously with the welding, lire capsule has a circumferential welding brow· on account of this, which acts m a reinforcing maimer. The seal or one of the seals can be matched to this and, for example, comprise sealing ftps bearing on the capsule on both sides of the welding brow.

Embodiment examples of fee invention are herefeaiter described by way of drawings. In the drawings, the same referenoe numerals indicate fee same or analogous: elements. The drawings show elements, which partly correspond to one another, in sixes, which, are different from .figure to figure, There are shown in;

Figure 1 a view of a brewing module sectioned along a longitudinal plane;

Figure 2 a view of an approximately csfee-shaped capsule;

Figure 3 a schematic drawing of a coffee ntaehine;

Figure 4 a view of an alternative brewing module, wherein; tire structure of fee brewing module is early partly represented;

Figure 5 a sectioned representation of the discharge device of fee brewing module according to Figure 4,. with a capsule;

Figure 6 view of a first enfeodiraent of a seal, in particular for the discharge device;

Figure 7 a view of a second embodiment of a. seal, likewise particularly suitable for the discharge device;

Pisire 8 & view of the seal scco'Äg to Figure ?, repressed m. a sectioned manner;; f'kiire 9 a- view of a further embodiment of a seal which is particularly suitable tor the introduction device;

Figure 10 a view of the seal according to Figure 9, represented m a ssètsêned Αΰ,Λ mannet;

Figures 11 and 12 In each case, a - view of further seals which are represented in a sectioned manner and are not amiable for cube-soaped, but lot example cylindrical or conical capsules; and

Figures 13 -I S views of the brewing module according: to Figure I, sectioned along the longitudinal plane, in various condi tions.

The brewing' module 1 according to Figure 1 is oi the ''spiigonlal. brewing modale wpc. In the manner known per se, it comprises a discharge device i ana an introduction device u which are fastened nr guided on a structure and are displaceable relative to one anoteer by way of an operating lever 5 pivotable about s pivot pin 6. In the shown embodiment; die introduction device 4, by way-of a pivot movement of the operating lever 5, is fusplaeeaole to toe trónt in toe direction of the discharge device 3, whilst, the latter Is immovable relative to the structure.

The insert, opening 7 for msetdltig a eubk portion capsule is well visible in figures i and 3, One example of snob a. cuboid, approximately cube-shaped portion capsule 51 is drawn in Figure 2, The capsule 51 is of fee capsule type as is described in detail in tiw patent application PCT/CH2010/000097. This patent application P€T/Cli2010/O0d097 is refereed so with regard to the nature of such a capsule with-a. plastic wall* and with regard to- ns manutaeture preieraluy the capsule is dosed in a method, with which a projecting edge is separated simultaneously with the welding, in Figure 2, apart from the characteristic capsule shape, one can also see a chwunferential welding brew 51,1, winch arises with the mentioned metuoo and can au «s an additional stiffening of the capside.

Embodiments of the extraction apparatus according to the: invention ate particularly tsatched to capsules made of plastic. One material for capsules, which is particularly pteferreu with regard to this, is, polypropylene (FF), Other materials are also concervaole, in panieular other foodstuff-compatible plastics. The wail thickness m me design as a plastic eapstue, m particular as a polypropylene capsule, is preierabiy between 0:, 1 mm and 0.5 mm, ror example between 0.2 mm and 0.4 mm, in particular between 0.25 mm and 0.35 mm.

The insert opening ? is designéit m the structure, is located in the region of the discharge device 3 and, like this device, mmaiss stationary during a movement of fee operating lever x The insert opening 7 can he slightly eonieaUy tapering to the bottom* in. order to produce a centring effect on fee capsule 51 during insertion, without fee danger of a jamming of fee capsule becoming too large.

In. the operating condition, fee brewing, module serves as a brewing module of a coffee Bsacisae. A coffee machine according to the invention, with a brewing module, as ts shown, m figure 3 in a schematic manner, apart from fee brewing module comprises a water tank 71, a pump 72 for feeding brewing water to fee inbndttcdon. device 4,. and a water heating device /3 (for example water heater). A capsule container 75, in which the capsules 51 fall ör fire transported after fee brewing process, is arranged below the brewing module.

The snnpiy of the heated water to the introduction device 4 Is effected via flexible water conduit sections (flexible tubes) and via supply channels 18. The introduction device moreover comprises at least one piercing tip 12 with an assigned feed, opening, so that the capsule can be pierced and can be supplied wife fee extraction fluid through the feed opening. The coffee machine furthermore for example comprises a capsule container 75 Which is arranged below the brewing chamber and In which the capsules are automatically ejected after the brewing procedure, by way of lifting: the operating lever 5.

The discharge device .3 is also provided wife at least one piercing tip 11 and an assigned discharge opening. Furthermore, depending on die configuration, a. discharge conduit is also present, wife which coffee (or likewise) exiting from the exit 8 of fee discharge device is ted such that it trickles into a cup 78 put down at fee envisaged location..

The piercing dps 11 of the discharge device 3 are surrounded by an extraction-side seal bl, and the piercing tips of the introduction device 4 are surrounded by an injection-side seal 62, These seals are hereixndfer described in more detail. Likewise shown, is a wiper element' IS whose inneiiofi is likewise yet to be described hereinafter.

The piercing tips and ckrv.ys on which they are fastened, can be designed according to the mentioned patent application PCT,CH201Ô/000098, which is explicitly referred to hare.

The approximately cnbe-shaped capsule 5 ! which is inserted through the insert opening 7 when fee brewing chamber is open (Figure 1), is held m the brewing module m a supported manner by a support, portion 16 of the discharge device 3 and a movable capsule support i 9.

Flgore- 4 show a variant of the brewing module, with which the approximately cube-shaped capsule 15 which is insetted into the open brewing chamber is· supported by a support 20 of the brewing chamber, said support together with lateral walls 14, the end-surla.ee of the discharge device which comprises the' piercing tips 11 of the discharge device, and elements of the introduction device 4, forming the brewing chamber. The brewing module according to Figure 4 with the exception of the sealing system corresponds to the brewing module described in the patent application PCTCH2Q10/000099, whose teaching is expressly referred to here,

Figure 5 shows the discharge device of the brewing module of Figure: 5 with a schematically represented capsule 51., in section. The seal 61 can be dearly seen and is also represented in Figure 6, This comprises an inwardly projecting, circumferential sealing lip 61,1 which bears on the face-side of the capsule 51A sealing: bead 61,2 as a further sealing step bears along a circumferential surface of the capsule. In the represented embodiment, the seal in tire region of the sealing head 61.2 comprises an optional outer notch 61.3 which increases the elasticity of die seal in the region of the sealing bead 6.1.2. A pronounced trough 6L4 is formed between the sealing lip and the sealing bead ~ thus the region ot the rounded edge of die capsule, atxi even with a strong pressing of the capsule against the discharge device, this trough forms & cavity between the sealing Up 61.1, the sealing head 61.2 and the capsule 51.. A seal flange 61,5 serves the fasterung in the brewing module, A further embodiment example of a seal for the discharge device is represented in Flgares ? and &. This seal eormsponds to the sea! of the discharge device 3 of the brewing module according to Figure I. As the previously described seal, this seal 6.1 also comprises a seal collar 60 winch encompasses the capsule 51. Additionally to the tfwsti sealing lip 61J. which collars pmximally on the .seal collar 61 J, projects inwardly and bears on the end-face of the capsule 51, the seal 61 comprises two further sealing lips 6.1.2 which bear on the capsule m the region of its edge. In particular, die sealing lips 60 can he arranged such that they lie on both sides of the stiffening welding brow 51,1, which in particular results in a particularly good stability and sealing effect

The Imecdon-skle seal 62 of the brewing module according to Figure I is yet represented in Figures .9 and 19. Additionally to the inwardly projecting fest, sealing lip 62,1 bearing on fee end-face of the capsule, a plurality of second,· encompassing sealing lips 62.9 is present on a, seal collar 62,.?., In the shown embodiment example, there are four: such sealing lips 62,9, and in other embodiments two, three, hive or even more such for other) sealing lips are present. Preferably, the number is 2*5 and in particular 3-3. As with the extraction-side seal 61, the injection-side seal 62 hi fee shown embodiment also comprises a fastening Hange 62.5.

The second sealing lips is contrast to the first sealing Up 6Li end to the further sealing lips tS'1.8 of the extraction-side seal. 61 have a relatively high stif&ess on account of inert geometry, by which means they can exert a relatively large elastic force without such a force bearing hem the outside, onto an encompassed capsule ana hold litis. In the drawn embodiment example, the second settling lips are sawtooth, shaped with a festally (ie. away from the direction, worn which the brewing fluid is injects*!) projecting Up sear 62. It), This form likewise has the effect that the pressure of the brewing fluid from the proximal side against the roughly perpendicular surfaces 62.11 presses the sealing ftps even greater against the capsule wail. In contrast to inwardly projecting lips which tend to be somewhat wing-like in cross section as is the case with the fest scaling lips 62.1, the saw-tooth shape however effects the mentioned stiffness.

In each case, an extraction-side seal 61 and an injection-side sea! 62 as can be applied for nomcubic, but circularly cylindrical, barrel-shaped or beaker-shaped capsules are represented in Figures Π and 12. In the figures, one can clearly see the shape which is rotatloually symmetrical: about the capsule axis, in contrast to the Figures 8 and 10.

Embodiments of the extraction material according to the .invention are designed such that the injection-side seal 62 bolds the capsule on opening the brewing chamber and pulls it out of the exhactiomside piercing, tips and out of the extmelfon-side, encompassing seal 61, so that the capsule falls into the capsule container 75 after use. This is illustrated m Figures 13-15.

Figure 1 shows the initial position of the brewing module without an inserted capsule, Á capsule 51 has been inserted through "the insert opening 7 in .Figure 13 add rests on the movable capsule support 19 and the support portion 16 of fee discharge device 3. Subsequent to this, by way of a movement of fee operating lever 5, fee mtroductlon device 4 is displaced to fee capsule 51 and to fee discharge device 3, by which means fee injection-side seal 62 is pushed over fee capsule, and the capsule pushed against the discharge device and is pierced on the injection side as well as the extraction side. With the relative movement which thus closes the brewing chamber, the capsule support can also be displaced away from the capsule, as soon as fee capsule i s encompassed by the injection-side seal and is held in its position by way of this. Hie brewing process takes place subsequently to the closure of the brewing chamber, in which brewing process the brewing fluid is Introduced under pressure into fee capsule, and the brewing drink is led out of the capsule, on fee extraction side.

Figure .14 shows the brewing module wife the capsule I S at the beginning of fee relative movement of the introduction' device and discharge device, said relative movement opening the brewing chamber and being effected' again with a pi voting movement of the operating lever. The injeetion-sidc seal 62 holds the capsule and: pulls it out of the extraction-side piercing tips 11. and iüe extraction-side seal 61. With the continuation of the movement further from tile position according to Figure 14 to the right on the direction of the position according ro Figure 15, the capsule is gripped by the wiper means 15 and its movement relative to ihe introduction device which continues to move Is blocked, by which means tire capsule is also pulled out of die injection-side seal 62. The capsule cap fall downwards into the capsule container /5 since the capsule support lit is displaced out of the initial position. Figure 15 shows the situation, with an opened brewing chamber, before the capsule support 19 is displaced back into the initial position.

In the illustrated embodiment, the brewing module is of the "horizontal brewing module" typo. However, other embodiments are also possible. In particular, the extraction apparatus can also be of the "pètoa machine” type, in which the discharge device or possibly the introduction device is integrated in a piston which Is tastenabie on a. stationary part of the extraction apparatus, hr order to form the brewing chamber.

Claims (11)

Ss: to a da da claims 1, Extension device. having a capsule shell and a cooking unit (1) comprising a capsule of capsules containing the capsule shell and the capsule body contained within the capsule body? wherein the cooking unit (1) comprises a first cooking unit and movable second cooking unit slots, and a drainage structure (3) and an extra fluid to the capsule for dispensing the extrusion product of the first and second cooking unit parts from the capsule. a leading inlet means (4}), wherein the inlet device is provided with at least one small lock for piercing the capsule (12} f and the inlet device (4) for one or more of the filter elements (12) attached thereto) an elasticly deformable injection-side seal (62} provided with a capsule positioning and retaining "a circumferential sealing vessel (62.7}) and at least one circulating probe (62) 62.9} and / or an occluding sealing lip? ? or at least one sealing lip line or fall along the surface of the capsule and the capsule wall is pushed towards the inside of the capsule. 2. Extraction device according to claim 1? in which the outlet structure (3}) is provided with at least one circumferential force gauge (61.1? 61.8}) and / or a crimping orifice (61.2), provided with a sealing side seal (61} where? and the capsule wall is pushed towards the inside of the capsule. Extraction device according to claim 3, hz, i or 2, with the < RTI ID = 0.0 > < / RTI > } and / or a core (61.2) encircles the capsule {51} along a circumferential surface and, due to its elasticity, is pressed against the capsule wall such that the seal retains the capsule. 4, 1 ~ 3. Extraction apparatus according to any one of claims 1 to 5, wherein the injection-side seal (62) f or at least one seal (61, 62) is provided with a plurality of intermediate seal jacks (61.8, 62:9} and / or sealing flanges) the capsule wall is pushed towards the inside of the capsule, where a recess is formed between the successive sealing lips or the flanges so as to form an incubator old in the operating position between the successive dowels and hollow flanges and capsules. 5, Acts 1-4. Extracted device according to one of Claims 1 to 5, characterized in that at least one of the circumferential tomatoes (61.1, 6.2.1), or at least one of the hollow flanges, is a boom surface of the capsule and the incubating pulp or hollow flakes (61, 2, 61.8, 62.9). ) at least one of them is pressed into a circumferential surface. 6. Extraction device according to claim 5, characterized in that a plurality of sealing jaws or hollow flanges (61.2, 61.8, 62.9) are pressed in a circumferential teeth, whereby each of the stacking jaws, or, in particular, between the tops, is pressed together. a recess is formed in such a way that, in the operating position, an incoming cavity is formed between the adjacent tufts or hollow flanges and the capsule according to any one of the preceding claims. the following gauge grooves show a saw-tooth cross section. 8. Referring to Figures 1-7. Extraction apparatus according to any one of claims 1 to 4, characterized in that the inlet device (4) has at least one liquid-inlet opening arranged in the space of the filter element or the filter element (12). 9, 1-8. Extraction device according to one of Claims 1 to 3, characterized in that the injection-side seal encircles the capsule and is fixed only by the elasticity of the seal, so that when the cooking chamber is opened, the capsule is based on the fixing effect of the seal (62). pulling down the extraction sides from the pickup {11} "ID. Extraction device according to claim 9, characterized in that the capsule is a venting means for releasing the capsule from the injection side seal {62}. (15). 11. Referring to Figs. Extraction apparatus according to any one of claims 1 to 5, having a horizontal cooking unit, Extraction apparatus according to any one of claims 1 to 11, characterized in that the injection-side seal (62) or the seals (61, 62) are provided with at least one outwardly secured fixing flange (61,5, 62.5}). 13. References 1-12. Extraction device according to any one of claims 1 to 6, wherein the seal (62) has at least one frictional groove (62.1, 62.9), indicating that the gullet times or at least one gauge time are inwardly extending up to the point of fluid injection, or liquid fluid extrusion. is formed, whereby the sealing times are pressed by the fluid jet added to the elasticity effect, a. capsule 14. A coffee or tea making system according to any one of claims 1 to 13. An extraction device according to any one of claims 1 to 4, and a capsule (SI) comprising a portion of the refining product, wherein the cooking unit has the size of the main body having the dimensions dimensioned for the capsule.