CN105705439A - Cartridge for extracting a beverage - Google Patents

Abstract

A cartridge (1) for extracting a beverage by injecting a fluid under pressure, comprising a containment body (2) that is adapted to contain a substance and to receive such fluid under pressure, the containment body (2) comprising a bottom wall (4) that is provided with at least one weakened portion (5) that can be broken due to the effect of the pressure of the fluid so as to generate an opening for the outflow of the beverage, the cartridge further comprising, externally to the containment body (2), an abutment (8) that faces without contact the bottom wall (4) in order to limit the deformation of the bottom wall (4) due to the effect of the pressure of the fluid and consequently limit the extent of the fracture of the at least one weakened portion (5).

Description

The cylinder of extracting beverage

Technical field

The present invention relates to a kind of cylinder for passing through to inject under stress fluid extraction beverage。

Background technology

Being currently known polytype cylinder for obtaining beverage, for instance espresso or the like, cylinder inner space holds the material for extracting, for instance the baking coffee pulverized, the inner space of cylinder can form excellent aeroseal。This is by using the single body holding material to realize, and it has cup-shaped and upper area and is sealed by film or lid, and upper area can be perforated so as to inject fluid under stress, it is common that water。

Common solution is to have weakened segment bottom cup-shaped body, and it can be destroyed under fluid pressure effect in injecting tube。It is true that due to the increase of cylinder internal pressure, diapire can deform, expand outwardly and therefore produce to destroy in weakened segment。

The shortcoming of prior art is, diapire in order to flow out from beverage separates the material to be extracted, the filter of the rigidity being made of plastics can only be used without other selection, filter is adopted because if substituting, filter, supatex fabric or other flexible material being such as made of paper, then along with the destruction filter of cylinder diapire will can not be paved with the tear zones of diapire。

Use rigid filter also to need to use further amounts of plastics, and come into question in the mill, relevant to the cup shaped body that such rigid filter is inserted cylinder in these question essences。

Summary of the invention

One target of the application be just to provide a kind of can above one or more in the cylinder for extracting beverage that prior art is improved。

For this purpose it is proposed, the application target is just to provide a kind of cylinder carrying out extracting beverage by injecting fluid under stress, including bottom that can be only just destroyed under cylinder internal pressure effect, and is controlled for the energy of rupture flowed out bottom the cylinder of beverage and limited。

Another target of the application is to provide a kind of cylinder carrying out extracting beverage by injecting fluid under stress, the bottom flowed out from which to produce beverage is destroyed, avoid using and being not belonging to the outer member of a cylinder part, for instance be arranged on the perforating press extracted on chamber or counter-pressure element that cylinder is placed。

Another target of the application is to provide a kind of cylinder carrying out extracting beverage by injecting fluid under stress, due to the controllability broken, if needing to can allow for using filter, for instance paper filter or the like。

Another target of the application is to provide a kind of cylinder carrying out extracting beverage by injecting fluid under stress, and it is very reliable, it is easy to realize and very low cost。

These targets and other targets can by following a kind of for realizing by injecting the cylinder of fluid extraction beverage under stress, including one for hold material and under described pressure receives the vessel of fluid, described vessel includes the diapire with at least one weakened segment, this weakened segment can be destroyed thus producing the opening being used for flowing out beverage under described fluid pressure effect, it is characterized in that, except described vessel, cylinder farther includes abutting part, this abutting part is in the face of described diapire but does not contact, so as the deformation of the described diapire that restriction causes due to fluid pressure effect, and the therefore level of breakage of restriction at least one weakened segment described。

Accompanying drawing explanation

Further aspect of the present invention and advantage can be shown better from preferred but the cylinder according to the present invention of nonexcludability embodiment, and it illustrates with reference to the accompanying drawings in the way of non-limiting example, wherein:

Fig. 1 is the side view of cylinder according to an embodiment of the invention；

Fig. 2 is the axial cross-sectional view that in Fig. 1, cylinder takes along II-II line；

Fig. 3 is the axonometric chart of the body for holding material to be extracted, this body be used in shown in Fig. 1 cylinder in；

Fig. 4 is that the cylinder described in Fig. 1 is for limiting the axonometric chart of the pillar support member broken。

Fig. 5 is the view seen from above of the support member shown in Fig. 4；

Fig. 6 is the cross-sectional view that in Fig. 5, support member takes along line VI--VI；

Fig. 7 is the plane graph that cylinder is seen above diapire in accordance with another embodiment of the present invention；

Fig. 8 is the detailed view in bottom wall central region in Fig. 7。

Detailed description of the invention

With reference to accompanying drawing, representing according to the cylinder of present invention accompanying drawing labelling 1 of applying greatly, this cylinder includes a vessel 2, and vessel is suitable for holding the material (not shown) of therefrom extracting beverage, and suitable receives fluid, particularly water under stress。

In a preferred embodiment of the invention, material can be the baking coffee pulverized, and the water under pressure can be hot water, for instance about 90-99 DEG C of temperature, and the about 9-12 bar of pressure, the beverage so made is espresso。

Alternatively, the material in cylinder can be instant coffee, or any pulverous Edible material, that give birth to or lyophilizing, or can include concentrate。

Vessel 2 such as can be adopted molding process by polymeric material, for instance injection moulding and/or compression, or thermoforming or be crushed to, vessel is cup-shaped or beaker shape, and its upper area covered 3 seals, and lid 3 can be perforated, fluid is so allowed to inject under stress。In the embodiment shown, lid 3 is also by molding (such as, injection and/or compression), and thermoforming or extrusion are made, and can the lid of corresponding cylinder described by EP2049416B1 European patent, this application at this by with reference to as part of the whole。

Alternatively, lid 3 can also be made up in known manner of impermeable film。

Vessel 2, preferably without opening, has the diapire 4 containing at least one weakened segment 5, and weakened segment can be destroyed under the impact of the fluid pressure of injecting tube 1, and so flowing out this wall 4 for beverage provides an opening。

Weakened segment can obtain by known methods, weakens its thickness in one or more linearity regions of diapire along the line predetermined when manufacturing vessel 2。

Diapire 4 has multiple lobe 6 prominent to the inside of cylinder 1, preferably there is the size of space, make it possible to be carried towards the opening formed due to breaking of weakened segment 5 with canalization form by the beverage of extraction simultaneously, and there is wider surface and can support filter, a preferably sheet of filter 7, for instance the material of the solid particle that can filter the material comprised in cylinder 1 of filter paper, polyethylene coating paper, non-woven pieces of cloth or other form membrane。

Lobe 6 can obtain in the process of molding vessel 2, it is possible to is concentric arcuation rib, and it is arranged to limit concentric channels and radial channel, for instance mean depth and the about 1mm of width。

Weakened segment 5 can extend along at least one edge of the bottom of at least one lobe 6, for instance along two edge 62a and 62b generally longitudinally bottom the hard lobe 61 in center, the hard lobe in center diametrically extends in the circular central region 40 of diapire 4。

Weakened segment 5 can also extend along the diameter line 51 in region 40, and lateral cross is in the direction of central boss 61, thus forming cross point 53 between the weakened segment at diametrically line 51 and the weakened segment 52 of limit 62a and 62b along central boss 61。So, the diameter of central boss 61 and the direction of line 51 are preferably substantially vertical, thus limiting four scallop with rib 63 and initial breakdown point 53。

As shown in FIG. 7 and 8, in another embodiment of the present invention, the diapire 401 of vessel 2 also has multiple protuberance 600 with first embodiment is identical, namely, they are to prominent in cylinder, there is the size of space make it possible to be carried towards the opening formed due to breaking of weakened segment 5 with canalization form by the beverage of extraction simultaneously, and filter can be supported with wider surface, a preferably sheet of filter 7, for instance the material of the solid particle that can filter the material comprised in cylinder of filter paper, polyethylene coating paper, non-woven pieces of cloth or other form membrane。

But, weakened segment 5 herein is formed in the circular central region 400 of diapire 401 by weakened line 501 and 502, and in fig. 8, weakened line defines the paired counterpart of spiral form or fingers 503。In the region limited by such part 503, also having protuberance 601 on border circular areas 400, it has the thickness substantially the same with protuberance 600。

In whole two embodiments, in the outside of vessel 2, include an abutting part 8 towards the outside of diapire 4,401 according to the cylinder 1 of the present invention, in inactive state, namely before extracting beverage, will not be contacted it。

Abutting part 8 is arranged in the circumferential support 80 on the diapire 4,401 being fixed on vessel 2, preferred support member 80 is separately fixed to diapire, such as, fix by the limit 82 of support member 80 with from the mechanical interference between diapire 4 circumferential rib 41 outwardly。

More particularly, the region 40,400 that abutting part 8 starts laterally toward having weakened segment 5 diapire 4,401 from its support member 80 extends。In the embodiment shown in Fig. 1-6, it is preferable that abutting part 8 extends to central boss 61。Pillar 8 arrange in order that the deformation that causes along with the weakened segment 5 fluid ruptures at pressures in injecting tube of restriction diapire 4,401, thus the level of breakage in limitation impairs portion 5。

When the fluid pressure not entered into, abutting part 8 does not contact with diapire 4,401, but with the outer surface of diapire 4,401 at a distance of D。Therefore, abutting part 8 is not intended to produce what the weakened segment 5 of diapire 4,401 of cylinder was broken。On the contrary, break only due to the internal pressure of cylinder 1 causes in extracting beverage process。Abutting part 8 defines the mechanical shock limiter that limitation impairs portion 5 is peeled further apart, and the outlet that is likely to of such filter 7 is flowed out for beverage by the tear-off opening limited。By controlling level of breakage by this way, it is possible to and then control the amount of the beverage flowed out from cylinder 1。

Abutting part 8 is preferably provided on the fluid flow barriers thing 9 of the support member 80 being fixed on vessel 2, such barrier opening flowed out for beverage in the face of being produced by breaking of weakened segment 5, thus slowing down and/or control the flowing of beverage that extracts and preventing bespatter, therefore can directly to cup or beaker distribution beverage。The barrier 9 hindering fluid flowing can also the quality of facilitated extraction beverage。

Barrier 9 can be the power basin that disappears, for instance be arranged to lancet as depicted, in order to limit the suitable outer surface making beverage flow rule。Such basin has the edge 91 of the diapire 4,401 relying on vessel 2, also has one or more outlet or notch 92 to overflow the interior beverage collected of basin。

In this case, pillar 8 has at least one element 81 highlighted from the outer surface of the diapire 4,401 of the power basin 9 vessel 2 towards cylinder 1 that disappears, such as sell, more specifically, have the element that the outer surface towards the central lug 61 in the embodiment shown in Fig. 1-6 highlights。

Around power basin 9 and the corresponding edge 91 of disappearing, support member 80 includes annular wall 93, this annular wall is concentric with edge 91 and is suitable to isolate the inner annular region of the support member 80 around edge 91, inner annular region has at least one passage 95 for flowing out beverage from the outer annular regions of support member 80, and outer annular regions has radial support wall 94。

Alternative form as filter 7, optional employing rigid filter (not shown), it includes flat body, this flat body has the circumferential edges of the thickening around border circular areas, and border circular areas has multiple filtration through hole, it is sized to stop that immobilized particles passes through and allow brewing water or beverage to pass through。Margo can be located in figure on diapire 4,400 in the circumferential step of all protuberances 6,600。Suitable rigid filter can be at the rigid filter described in EP1982933A2 European patent, and this patent is passed through with reference to as part of the whole at this。

One or more parts of cylinder 1 are made up of thermoplastic polymer, synthesized by traditional raw material (such as oil) or the renewable sources of energy (such as alcohol fermentation), for instance polypropylene, polystyrene, polyamide, vinyl alcohol resin (such as EVOH), polyethylene or polyethylene terephthalate (PET)。Any either component that may be used to cylinder 1 in these materials, including lid 3, rigid filter (not shown), vessel 2 and support member 80。If filter 7 does not adopt rigid filter, then filter 7 can by any one non-textile fabric made in these materials。Two or more above-mentioned thermoplastic polymers in one or more parts of cylinder 1 also be combined with each other in a manufacturing process, for instance thermoforming or injection molding technique。Such as, one or more parts of cylinder 1 can be the laminates of two or more above-mentioned thermoplastic polymer。

One or more parts of cylinder 1 can be made up of biodegradation material, including Biodegradable polyester (such as polyactide or PLA), starch-base biodegradation material, microorganism metallurgy, biodegradation vinyl alcohol resin (such as PVOH), bio-based thermoplastic or polyhydroxyalkanoate (PHAs)。Any one in these biodegradation materials may be used to manufacture any one in lid 3, filter 7, rigid filter (not shown), vessel 2 and support member 80。These biodegradation materials two or more in one or more parts of cylinder 1 can also be combined with each other。Such as, one or more parts of cylinder 1 can be the laminates of two or more above-mentioned biodegradation material。

The mode of operation of the cylinder according to the present invention can be will be apparent from from description above。With particular reference to the embodiment shown in Fig. 1-6, in an inactive state, the abutting part 8 of support member 80 is D with the distance of the outer surface of the diapire 4 of the vessel 2 of cylinder 1。

When cylinder inserts the machine of traditional extracting beverage, lid 3 is punched machine and bores a hole to adapt with the nozzle injecting fluid under stress, and fluid combines with the material in cylinder 1 and manufactures beverage。

If there being opening, then lid 3 just need not be bored a hole。

Then, the fluid injecting tube 1 under pressure mixing with the material in vessel 2 wherein。This operation adds the pressure in cylinder 1, therefore diapire 4 can outwards deform。

Due to this deformation, weakened segment 5 starts to break, particularly from cross point 53, and along the initial part of weakened line 51 and 52 from point 53 beginning。

Along with deformation, central boss 61 is left also with the tearing district of central area 40 of diapire 4。But, after passing through distance D, impacting of central boss 61 is stoped by the abutting part 8 of pin 81, thus the alar part of tearing that restriction is limited by weakened line 51 and 52 at first further opens。

Meanwhile, beverage can tear outflow from these, basin 9 slow down, rise until opening 92 along basin, and last outflow tube from the passage 95 being arranged on support member 80, passage is co-axially around basin 9 and the outer surface skimming over basin 9, and it is easily positioned to lancet form。

Similar in the operation of the embodiment shown in Fig. 7-8。Especially, weakened segment starting under cylinder internal pressure effect is broken, and keeps at least one internal 501a and 502a of online 501 and 502, and it is corresponding internal that the end facet of counterpart 503 faces toward。But, the opening further of alar part of tearing that initial weakened line 501 and 502 limits is stoped with contacting of abutting part 8 by the center in region 400。

In practice, it is found that the cylinder according to the present invention completes set objective so that it can control and limit for flowing out breaking bottom the cylinder of beverage。Just because of this so that filter can be used, for instance filter paper, polyethylene coating paper or the like, although bottom can be only destroyed under cylinder internal pressure。

The breaking of bottom flowing out beverage from which avoids using the outer member of a not cylinder part, such as it is placed in the perforating press on the extraction cell that cylinder is placed or counter-pressure element, and take to use the mode of abutting part forming a cylinder part, and enable control over and limit can the tearing of destroyed area。

Although the cylinder according to the present invention is specially designed to extracting espresso coffee from the baking coffee pulverized, but generally also may be used for the fluid extraction beverage used from food ingredient under pressure。

Cylinder can be variously changed and deform, and all these is within the scope of the appended claims。It addition, all of details is all likely to be substituted by technical IF-AND-ONLY-IF element。

Especially, the material of employing and size can as required with prior art and optional。

This application claims the priority of No.MI2013A000906 Italian application, its content is by with reference to as part of the whole。

The technical characteristic mentioned in each claim has accompanying drawing labelling, the sole purpose that these accompanying drawing labellings are quoted is to be more fully understood that claim, therefore, the explanation being labeled as the element that example is distinguished with accompanying drawing is not had any restriction effect by these accompanying drawing labellings。

Claims (13)

1. the cylinder (1) being used for by injecting fluid extraction beverage under stress, described cylinder (1) includes for holding material and receiving the vessel (2) of described fluid under stress, described vessel (2) includes the diapire (4) with at least one weakened segment (5), described weakened segment can be destroyed thus producing the opening being used for flowing out beverage under the effect of the described pressure of described fluid, it is characterized in that, except described vessel (2), described cylinder farther includes an abutting part (8), described abutting part is in the face of described diapire (4) but does not contact with described diapire, so as the deformation of the described diapire (4) that restriction causes due to the described pressure effect of described fluid, and the therefore level of breakage of described at least one weakened segment (5) of restriction。

2. cylinder according to claim 1, it is characterized in that, described abutting part (8) has the region of at least one weakened segment (5) on described diapire (4), it is preferred to the central area (40) of described diapire (4)。

3. the cylinder according to aforementioned one or more claim, it is characterized in that, described abutting part (8) is arranged on barrier (9), described barrier is fixed on described vessel (2) and in the face of the described opening for flowing out beverage, thus slowing down and/or controlling its flow。

4. cylinder according to claim 3, it is characterised in that described barrier (9) is the power basin that disappears。

5. cylinder according to claim 4, it is characterized in that, the described power of disappearing basin includes the portion's edge (91) relying on described diapire (4), and described edge (91) arrange at least one outlet (92), flow out for the beverage that will collect in the described power of disappearing basin。

6. according in claim 4 or 5 described cylinder, it is characterized in that, described abutting part (8) includes the element (81) that at least one is prominent to the described diapire (4) of the described vessel (2) of described cylinder (1) from the bottom of the described power of disappearing basin。

7. the cylinder according to aforementioned one or more claim, it is characterised in that described abutting part (8) forms one with support member (80), and described support member is separately fixed to described vessel (2)。

8. the cylinder according to aforementioned one or more claim, it is characterized in that, described diapire (4) includes the multiple lobe (6) internal prominent to cylinder, between filter (7) described material and the plurality of lobe (6), the impact of wherein said at least one weakened segment (5) is positioned at least one edge (62a, 62b) of the bottom of at least one (61) of described lobe (6)。

9. the cylinder according to aforementioned one or more claim, it is characterised in that described at least one weakened segment (5) extends along the diameter line (51) in the approximate centre region (40) being positioned at described diapire (4)。

10. the cylinder described according to Claim 8 with 9, it is characterized in that, described at least one lobe (61) of described lobe (6) in the central area (40) of described diapire (4) diametrically to extension, and transverse to described diameter line (51)。

11. according to described cylinder one or more in claim 1-7, it is characterized in that, described weakened segment (5) has the circular central area (400) of described diapire (401), and including being suitable to be defined as the weakened line (501,502) of the part (503) to spiral form or fingers。

12. according to the cylinder described in aforementioned one or more claim, it is characterised in that its one or more parts are made up of following material:

-thermoplastic polymer, for instance polypropylene, polystyrene, polyamide, vinyl alcohol resin, polyethylene or polyethylene terephthalate；

-or the combination of two or more thermoplastic polymers that combines, thermoplastic polymer combines from following group selection, and described group includes polypropylene, polystyrene, polyamide, vinyl alcohol resin, polyethylene or according to ethylene glycol terephthalate。

13. according to the cylinder described in aforementioned one or more claim, it is characterised in that its one or more parts are made up of following material:

-biodegradation material, for instance Biodegradable polyester, starch-base biodegradation material, microorganism metallurgy, biodegradation vinyl alcohol resin, bio-based thermoplastic or polyhydroxyalkanoate；

-or combine two or more biodegradation materials combination, biodegradation material is from following group selection, and described group includes Biodegradable polyester, starch-base biodegradation material, microorganism metallurgy, biodegradation vinyl alcohol resin, bio-based thermoplastic or polyhydroxyalkanoate。