CN1933753B

CN1933753B - Integrated cartridge for extracting a beverage from a particulate substance

Info

Publication number: CN1933753B
Application number: CN2005800095640A
Authority: CN
Inventors: F·素吉里夫拉尼; L·马斯特洛帕斯库阿; F·范伊登; B·德拉皮厄特拉
Original assignee: Illycaffe SpA
Current assignee: Illycaffe SpA
Priority date: 2004-03-26
Filing date: 2005-03-22
Publication date: 2011-05-04
Anticipated expiration: 2025-03-22
Also published as: AR048511A1; EP1580143A1; DE602004007479T2; EP1580143B1; CN1933753A; ES2289381T3; CN101618786B; CN101618785A; DK1580143T3; DE602004007479D1; CN101618785B; CN101618784B; TWI360403B; CN101618784A; TW200536502A; TW201201749A; CN101618786A; TWI360404B; ATE366701T1

Abstract

A cartridge (1) for extracting a beverage from a particulate substance (4) contained therein by means of water under pressure, the cartridge comprising: a main body comprising a cup portion (2) and a lid portion (3), the cup portion (2) comprising a base (7), a sidewall (8) and a rim (9a) opposed to the base (7), the lid portion (3) being fixedly attached to the rim (9a) of the cup portion so as to define an internal volume of the cartridge, the internal volume of the cartridge housing the particulate substance (4) comprised within filtering means (5a,5b) for retaining the particulate substance (4) and for percolating fluid substances therethrough, the lid portion (3) comprising a lid port (6b) defining a first passage for percolation fluid substances, the base (7) of the cup portion (2) comprising a cup port (6a) defining a second passage for percolation fluid substances, characterized in. that the base comprises a plurality of ridges (101a) directly formed thereon and protruding towards the internal volume of the cartridge (1), so as to support the filtering means (5a) and the particulate substance (4) and to define a fine canalization between the filtering means (5a) and the cup port (6a).

Description

Be used for from the integrated cartridge of granule materials leaching beverage

Technical field

The present invention relates to a kind of being used for from the integrated cartridge of the leaching of the granule materials such as coffee in powder form, instant coffee, tealeaves, chocolate powder or milk powder beverage.

Background technology

As everyone knows, be used for to put granule materials in the container of a filtration that is installed in machine into usually from the machine of granule materials leaching beverage.Especially, automatic/semi-automatic flash distillation coffee machine (espressocoffee machine) comprises the container of a filtration, be also referred to as the filter mounting yoke, the ampoule coffee in powder form during use is mounted in it, and then carries out the leaching of coffee beverage.

The general step of leaching coffee beverage roughly is equal to the step that begins to prepare beverage with other automatic machinery from powder material in the flash distillation coffee machine, comprise that the stage of the leaching chamber of a container that hot water is injected with filtration under suitable pressure, impregnation stage and one are transported to coffee cup machine outside or the stage of glass soaking the beverage that comes out, and prepare against and drink.

Be used to prepare the normally material of disposable Instant Drinks of the coffee in powder form of infusion beverage and other granule materials, in case coffee in powder form is soaked, the speciality that sense organ is worked has wherein lost with regard to irremediable such as the body of taste, fragrance and the beverage that soaked.Therefore, in the flash distillation coffee machine and at other, soak in the machine, after once soaking, must take out the granule materials that soaked.The reason that the filtering container that Here it is need be equipped with the ampoule coffee in powder form with handgrip usually takes out in the flash distillation coffee machine is taken out container and is for the coffee in powder form with mistake wherein being outwelled and the new coffee in powder form of the ampoule of packing into.

For the ease of charging and the emptying operation that carries out filtering container, adopting the disposable coffee in powder form sheet stock of pre-packing always, it comprises the coffee in powder form that is contained in the ampoule in the filtration paper bag, can be placed directly in this sheet stock in the filtering container of flash distillation coffee machine.Although this structure is given in the operation and brought convenience, it also has some shortcomings.Specifically, sheet stock is not airtight, therefore in order to seal each ampoule, must carry out the hermetically sealed packaging second time, is not subjected to being infected with of external environment to keep sheet stock in storage process.

Also have, user's hand will contact sheet stock when sheet stock being put on the filter mounting yoke, and this just can not guarantee to meet healthy requirement fully.

The disposable materials capsule that makes of coffee in powder form has also appearred being equipped with in the past few years.This material capsule that is generally frustoconical shape is made with plastics or aluminium, and it is compared with the sack that filter paper is made, and environment has good air tightness to external world.

A kind of known material capsule has an end face that can be penetrated by the water injection needle/nozzle of flash distillation coffee machine, so that water is injected in the material capsule with certain pressure, this material capsule also has a bottom surface, and it comprises a weakness zone that will break under the pressure of osmotic fluid.Also be provided with an internal ramp in the material capsule, be used to prevent that material particles from flowing out in the material capsule with coffee beverage.

Another kind of known material capsule comprises the cylindrical housings made from polypropylene, many holes are arranged on its end face and the bottom surface, be used for hot water is distributed in equably the coffee in powder form of ampoule, also comprise a paper filter, be used for preventing that at leaching process coffee in powder form from draining to the outside and coming from the hole on the bottom surface.These material capsules all must further be packed usually, such as wrapping with the laminated multi-layer polybag.

In order to prepare coffee beverage, need put these known material capsules and barrel into the filter mounting yoke, just constitute coffee leaching chamber in the time of on attaching it to coffee machine.In leaching process, osmotic fluid may contact the inner surface of leaching chamber earlier, then flows out and enters coffee cup outside the machine.This contact may be infected with leaching chamber and filter mounting yoke, and after the extract operation of several times coffee extract, owing in the leaching chamber residue and contaminant are arranged, the quality of beverage will reduce greatly.

Therefore, must after the coffee extract extract operation of certain number of times, thoroughly clean the extraction assembly that comprises leaching chamber and filter mounting yoke, in addition, also should remove the calcium of deposition termly.

Even regularly carrying out under the situation of these clean operations, fluid turbulent in the leaching chamber of machine or inadequate fluid sealing of injecting hot water process material end face capsule, that be opened place also can make some part of outer surface of the hot water moistening material capsule itself of the beverage of leaching or injection, and this will impair the healthy requirement of leaching process.

Another shortcoming of known material capsule is that they can not be retained in the osmotic fluid residue in the material capsule, because end face and/or the hole on the bottom surface or the opening of material capsule, when leaching process finishes and/or when in machine, taking out the material capsule, for the fluid residue provides outflow pathway, this can make the material capsule drip phenomenon be arranged and stain the surrounding environment of coffee machine.

In addition, known various material capsules and flash distillation coffee machine not only have problem aspect safe and sanitary, and they can not be distributed in hot water effectively coffee in powder form and/or coffee beverage is flowed out effectively.

In fact, in the material capsule of known frustoconical shape, hot water is to be injected in the internal capacity of material capsule by the nozzle that punctures material capsule end face, and the diameter of end face is littler than the diameter of bottom surface, so hot water is to go out from a single point spirt, rather than is sprayed onto equably on the coffee of whole ampoule.Therefore, hot water can only be to irritate the particle of making coffee in a kind of uneven mode.

The sort of barrel that discloses among the EP-A-1344722 has partly overcome this shortcoming, and two disks wherein are set in barrel, and barrel has a plurality of perforates and a plurality of burr, is used to form a plurality of fluid groove paths.Regrettably, must all puncture the upper and lower surface of this known barrel and could leach beverage, and must fill the internal capacity of this barrel with additional element such as distribution plate.

Those barrels of prior art also have a shortcoming, are exactly that they use and are not easily, because the user must control direction of insertion when barrel being installed in the leaching machine.Given shape by the barrel container in the machine can be convenient to this control, but when the user is busy especially (for example when user be one when preparing the coffee bar waiter of coffee beverage for many clients fast in rapid succession), even a little control of needs also is difficult to accept.

General introduction of the present invention

Target of the present invention is the shortcoming that overcomes the barrel and the material capsule of prior art by a kind of integrated cartridge, adopts this barrel, and most of functions of being carried out by the beverage extraction machine can itself be carried out by this barrel routinely.

In this target zone, an object of the present invention is to provide a kind of barrel and a kind of extraction assembly, can produce the good quality beverages of the aesthetic quality with improvement with them, especially true when adopting flash distillation coffee machine leaching beverage.

Second specific purpose of the present invention provides a kind of barrel and a kind of leaching system, and they can reduce or eliminate widely and be used for being infected with from any part of the machine of granule materials preparation of drinks.

A further object of the present invention provides a kind of blanket beverage extraction system, and it has the advantage that its structure is not infected with, and can be used for continuously from different types of granule materials leaching beverage.

Another specific purpose of the present invention is that the long-term high-quality that guarantees the granule materials in the barrel is preserved, and is installed in the beverage extraction machine until barrel, therefore can reduce external environment being infected with granule materials.

Another purpose is to simplify the use of barrel, and being reduced to barrel is installed to needs the number of operations that carries out in the beverage extraction machine.

Another purpose is to improve the even distribution of fluid on the granule materials of the whole ampoule in the barrel of injecting.

Another purpose is to simplify and reduce the inside lotus amount of barrel and beverage extraction machine, and don't can influence the quality of the beverage that finally obtains.

Last but be not that least important purpose provides a kind of barrel and a kind of extraction assembly that the beverage preparation operation is accelerated.

Other purpose that available a kind of barrel reaches this target and these purposes and hereinafter will display, this barrel is used for leaching beverage with the water of certain pressure from the granule materials that wherein comprises, this barrel comprises: a main body that comprises cup part and lid part, wherein, at the bottom of cup partly comprises glass, sidewall and with rim of a cup edge opposite at the bottom of the cup; Lid partly hinders the rim of a cup edge that is connected in the cup part and an internal capacity that limits barrel fixedly.The internal capacity of barrel is equipped with the granule materials that wraps in the filter element the inside, and filter element can stop granule materials and allow permeable flowing material to pass through from it.The cover section branch comprises that a lid advances/discharging opening, and it limits one first path for the fluid permeable material.The cup end of cup part, comprise that a cup advances/discharging opening, and it limits an alternate path for the fluid permeable material.The characteristics of barrel of the present invention are: cup comprises many direct forming the end thereon and to the outstanding rib of the internal capacity of barrel, but thereby supporting filter element and granule materials and limiting filter element and cup advance/the many meticulous tank circuit between the discharging opening.

This purpose of the present invention and these targets also will reach with a kind of barrel, this barrel is used for leaching beverage with the water of certain pressure from the granule materials that wherein comprises, this barrel comprises: a main body that comprises cup part and lid part, wherein, at the bottom of cup partly comprises glass, sidewall and with rim of a cup edge opposite at the bottom of the cup; Lid partly is fixedly connected to the rim of a cup edge of cup part and limits an internal capacity of barrel.The internal capacity of barrel is equipped with the granule materials that wraps in the filter element the inside, and filter element can stop granule materials and allow permeable flowing material to pass through from it.The cover section branch comprises that a lid advances/discharging opening, and it limits one first path for the fluid permeable material.The cup end of cup part, comprise that a cup advances/discharging opening, and it limits an alternate path for the fluid permeable material.The characteristics of barrel of the present invention are: it comprises a disk that is arranged in the porous material of cup at the end of filter element and cup part, but thereby supporting filter element and granule materials and limiting filter element and cup advance/the many meticulous tank circuit between the discharging opening.

Same target and purpose also will reach with a kind of barrel that is specially adapted to the flash distillation coffee machine, this barrel is used for leaching beverage with the water of certain pressure from the granule materials that wherein comprises, this barrel comprises: a main body that comprises cup part and lid part, wherein, at the bottom of cup partly comprises glass, sidewall and with rim of a cup edge opposite at the bottom of the cup; Lid partly is fixedly connected to the rim of a cup edge of cup part and limits an internal capacity of barrel.The internal capacity of barrel is equipped with the granule materials that wraps in the filter element the inside, and filter element can stop granule materials and allow permeable flowing material to pass through from it.The cover section branch comprises that a lid advances/discharging opening, and it limits one first path for the fluid permeable material.The cup end of cup part, comprise that a cup advances/discharging opening, and it limits an alternate path for the fluid permeable material.The characteristics that are specially adapted to the barrel of flash distillation coffee machine of the present invention are: internal capacity comprises that being installed in cup advances/and valving on the discharging opening, in leaching beverage process, this valving can flexibly be opened under the pressure effect of fluid permeable material, advances/discharging opening thereby allow the fluid permeable material to flow through cup in the beverage extraction process.

In addition, these purposes of the present invention also will reach with a kind of barrel, and this barrel comprises: one comprises cup part and lid main body partly, wherein, at the bottom of cup partly comprises glass, sidewall and with rim of a cup edge opposite at the bottom of the cup; Lid partly is fixedly connected to the rim of a cup edge of cup part and limits an internal capacity of barrel.The internal capacity of barrel is equipped with the granule materials that wraps in the filter element the inside, and filter element can stop granule materials and allow permeable flowing material to pass through from it.The cover section branch comprises that a lid of closing usually advances/discharging opening, and it forms one first path for the fluid permeable material when being opened.The characteristics of barrel of the present invention are: it comprises a part that punctures that is arranged in the internal capacity, so that can advance/discharging opening thereby open the cup of closing usually at the bottom of having pressure puncture the cup base pressure during to internal capacity glass.

Brief Description Of Drawings

Other characteristics of the present invention and advantage display in the explanation of each preferable but non-exclusive embodiment below, and these embodiment are non-limiting examples of representing with accompanying drawing, in each accompanying drawing:

Fig. 1 is the stereogram of the barrel of the first embodiment of the present invention;

Fig. 2 is the exploded perspective view that the plane A-A in Fig. 1 cuts open barrel that get, Fig. 1;

Fig. 3 is the cup vertical view partly of the barrel of Fig. 1;

Fig. 4 cuts open along plane B-B and gets, the cutaway view of the cup of Fig. 3 part;

Fig. 5 is the three-dimensional cutaway view of the barrel of the second embodiment of the present invention;

Fig. 6 is the three-dimensional cutaway view of the barrel of the third embodiment of the present invention;

Fig. 7 is that the pad among Fig. 5 is cut the stereogram after the part;

Fig. 8 is the stereogram of the barrel of the fourth embodiment of the present invention;

Fig. 9 is the exploded perspective view of the barrel of Fig. 8;

Figure 10 is the three-dimensional cutaway view of the barrel of the fifth embodiment of the present invention;

Figure 11 is the stereogram of inboard of lid part of the barrel of Figure 10;

Figure 12 is the stereogram of the barrel of the seventh embodiment of the present invention;

Figure 13 is that the barrel of Figure 12 cuts open the three-dimensional cutaway view of getting along its sagittal plane;

Figure 14 be the seventh embodiment of the present invention barrel, cut open the three-dimensional cutaway view of getting along an one sagittal plane, it is in the state that is punctured;

Figure 15 is the stereogram that punctures part that is contained in the barrel of Figure 12;

Figure 16 is the stereogram according to the extraction assembly of a second aspect of the present invention;

Figure 17 is the exploded perspective view of the extraction assembly of Figure 16;

Figure 18 be Figure 16 extraction assembly dissect stereogram, it has been placed on the beverage extraction position, and a barrel wherein is housed;

Figure 19 is the stereogram that dissects of an extraction assembly, and it has been placed on the beverage extraction position, and a plate-like barrel wherein is housed;

Figure 20 be Figure 16 extraction assembly dissect stereogram, it is in the barrel release location;

Figure 21 is the upward view that is used in the nozzle in the extraction assembly of Figure 16;

Figure 22 is the part side sectional view that is used in the nozzle in the extraction assembly of Figure 16;

Figure 23 is the part side sectional view that is used in the nozzle in the extraction assembly of Figure 19;

Figure 24 be another embodiment of the present invention extraction assembly dissect stereogram, barrel shown in Figure 12 wherein is housed;

Figure 25 be Figure 24 extraction assembly dissect stereogram, at this moment it is to be placed on the beverage extraction position;

Figure 26 is the side sectional view that is used in the water filling nozzle in the extraction assembly of Figure 24;

Figure 27 be another embodiment of the present invention barrel, cut open the three-dimensional cutaway view of getting along its sagittal plane; And

Figure 28 be another embodiment of the present invention extraction assembly dissect stereogram, barrel shown in Figure 27 wherein is housed.

Implement mode of the present invention

With reference to Fig. 1 and 2, wherein express the barrel 1 of first preferred embodiment of the present invention.This barrel be substantial cylindrical and comprise cup part 2 and lid part 3 fixed thereon.

Specifically, cup part 2 comprises the cup end 7 of circular, at the bottom of the cup 7 cylindrical side walls that extend out 8 and rim of a cup edge 9a, rim of a cup edge 9a is basically facing to the cup end 7 and form the openend of cup part 2.

When lid partly is fixed on cup when partly going up, the cup end 7, sidewall 8 and lid part 3 just define an internal capacity.The coffee in powder form 4 of ampoule is installed in such internal capacity and is sandwiched between the filter element, and filter element preferably comprises first filter paper or filters tulle 5b and second filter paper or filtration tulle 5a.In an alternative embodiment, the sheet stock of known type can be provided, this will be described hereinafter.

Cup part 2 comprises that a cup advances/discharging opening (cup port) 6a, 7 centre and outwards outstanding and form a flow export with respect to the internal capacity of barrel at the bottom of it is preferably disposed on glass.As shown in Figure 2, cup advances/and discharging opening 6a is path substantial cylindrical and that the internal capacity that leads to barrel can be provided, so just allows fluid to flow to or flow out the internal capacity of barrel.For this purpose, advance/discharging opening 6a, be provided with perforate 103a on 7 at the bottom of the cup, as shown in Figure 4 corresponding to cup.

Randomly, the cup end 7, can comprise a flange 105a, and its aligned sidewalls 8 is also outwards outstanding with respect to the internal capacity of barrel.Preferably this flange is set to stop with an outstanding shape, so that the production process of taking and placing and automation.And can on the estrade surface, be positioned over horizontal level to this material capsule, and and can be not crooked and roll, it can wire up and easier piling up, and also can carry out " strip " packing, just is fixed and is sealed between two laminated films.

7b is upwards and protruding slightly and be approximately perpendicular to 7b at the bottom of the lid at the bottom of this lid for 7b at the bottom of lid part 3 is configured as the openend that can be matched with cup part 2 and comprises a lid, the sidewall 105b of a substantial cylindrical.Sidewall 105b stops with a ring edge 9b, and this ring edge 9b is basically facing to 7b at the bottom of the lid and outwards outstanding from sidewall 105b, so that can be matched with the rim of a cup edge 9a of cup part 2 and be located thereon.Preferably, ring edge 9b has a roughly stepped section, so that can be engaged in the complementary supporting part on the rim of a cup edge 9a of cup part 2, as shown in Figure 3.Ring edge 9b and rim of a cup edge 9a also can adopt the section of other shape, as long as their shape can make lid part 3 be fixed on the cup part 2.

In all preferred embodiments, utilize ultrasonic wave shearing resistance solder technology that lid part 3 and cup part 2 are welded mutually.Perhaps, also available other known solder technology is such as common ultrasonic bonding, thermal weld, bonding or the like.Barrel of the present invention also may be made in a kind of single moulded parts.

Be preferably provided with outstanding sidewall 105b, so that the production process of taking and placing and automation, and make the shearing resistance welding region away from the coffee sheet stock, can reduce the interference of free coffee particles and plastics weld seam so greatly, because this interference may damage the compactness of its sealing.

In the preferred embodiment shown in Fig. 1 and 2, lid part 3 comprises that the lid in the centre of 7b at the bottom of its lid advances/discharging opening (lid port) 6b, it be substantial cylindrical and be that 7b is outwards outstanding with respect to the barrel internal capacity at the bottom of the lid.Lid advances/and discharging opening 6b provides the path of a turnover barrel internal capacity, and can allow fluid to flow to like this or flow out internal capacity.For this purpose, advance/discharging opening 6b, be provided with a perforate 103b at the bottom of the lid on the 7b, as shown in Figure 2 corresponding to lid.

Availablely find out: sidewall 105a and 105b advance with cup respectively/discharging opening and lid advance/be such after discharging opening combines, that is, they all have the top area of barrel and bottom section to be the section of E shape on the whole.Below with in the several alternative embodiments of describing, lid advances/and discharging opening do not protrude in 7b at the bottom of the lid or normally closes, and it can be punctured by entry needle or nozzle in leaching process.To provide similar all alternative embodiments below.

In various barrels of the present invention, perhaps lid advance/discharging opening 6b or cup advance/discharging opening 6a can comprise the grid that is used to make the fluid bias current, specifically, back with reference to the embodiment shown in Fig. 2-4, the inboard at the cup end 7 is provided with the first baffle plate 104a, and it radially crosses the center drilling 103a that is extruded with flow export 6a, and, cup advances/and the inner surface of discharging opening 6a is provided with second baffle 106a, 107a, and they all have certain distance to first baffle plate and perforate 103a.

Preferably, second baffle 106a and 107a face one another and advance/the inner surface projection of discharging opening 6a from cup, thereby give flow through cup and advance/fluid of discharging opening 6a defines a kind of " Z " vee path V, so just destroyed the path that directly flow to and flow out of fluid to the barrel internal capacity, and can stop fluid excessively to quicken, if the excessive acceleration of fluid may cause the jet phenomenon such as splash.

For make the fluid bias current or for filter paper provide supporting with prevent may by the leaching fluid hydraulic coupling cause distortion, the first baffle plate 104a is useful especially.Therefore, can prevent the obstruction of perforate 103a and breaking of contingent filter paper.

Additionally or alternatively, also can advance at lid/discharging opening 6b is provided with corresponding fluid flow baffles 104b and 107b, as shown in Figure 2.Specifically, make baffle plate 104b cross over lid perforate 103b, and make baffle plate 107b advance/the inner surface projection of discharging opening 6b and, be substantially similar to the path that forms in/discharging opening the 6a at cup so that fluid flow path is defined as in the face of baffle plate 107b from lid.

Although the preferred embodiment of each barrel of the present invention comprises the mobile grid of the fluid shown in Fig. 2-4, those skilled in the art that are readily appreciated that: be used for same purpose, also can adopt the mobile grid of fluid of other layout and shape.For example, the fluid flow baffles of " ten " font can be set, be split into four affluent-dividings in order to supporting filter paper and a straight fluid flow point.Perhaps, some radial projection that are shaped around the perforate of lid or cup can be set, and allow them stretch to the center of perforate, this will be described with reference to Figure 27 hereinafter.

Fluid flow grid can not be direct forming on the inner surface of barrel, but they are made an independent member, and then its are injected and be fixed in the inlet port or the flow export of barrel.For example, can its two ends be blocked with the filtering material (for example film of thermoplasticity screen material or labyrinth type fabric or paper) of fluid penetrable with one section little plastic tube.The example of the mobile grid of independent fluid like this will describe with reference to Figure 27 hereinafter.

Also have, can not only be located at the fluid grid that flows at the advancing of lid/discharging opening place but also be located at advancing/the discharging opening place of cup, also can only be located at one of two places, or flow according to fluid and to require not to be provided with completely any grid.

Cup part 6a also comprises direct forming at the bottom of the cup on 7 and to the outstanding a plurality of rib 101a of barrel internal capacity, and specifically, these ribs are outstanding to the outer surface of filter paper 5a.As can be seen from Figure 3, each rib 101a be arc and certain-length arranged.They directly are contacted with filter paper 5a, thereby form many little tank circuit 102a-102b, and these sulculus roads form the different concentric circles (see figure 3) of many radiuses and the whole bottom surface of filter paper-coffee assembly 4,5a are advanced with cup/and discharging opening 6a fluid is communicated with.Preferably, the mean breadth of these tank circuits/highly be about 1mm.

Similarly, lid part 3 is provided with many rib 101b, and they are outstanding to the barrel internal capacity, specifically, is outstanding to the upper surface of filter paper 5b.Correspondingly, many little tank circuits are formed between filter paper 5b and the cup end 7b, and lid is advanced/discharging opening 6b is communicated in the whole top of filter paper-coffee assembly 4,5a.

In each alternative embodiment, can only be located at cup to little fluid groove path and partly go up or only be located on the lid part, or not be provided with completely.In these situations, at the bottom of preferably the rib that reduces number being formed in glass on or at the bottom of the lid on, and make them outstanding to the barrel internal capacity, so as at the bottom of the cup/lid at the bottom of and form air space between the filter element.Such typical structure will be described with reference to Figure 11 hereinafter.

Perhaps, in order at least a portion barrel,, to form a meticulous tank circuit in the face of the inner surface of one of the top surface that comprises the coffee in powder form of ampoule and nonrecoverable filter element and basal surface, can coffee in powder form, filter element and the cup that the disk of a porous material is placed on such ampoule be advanced/discharging opening or lid advance/discharging opening between.Preferably, make such disk extend the coffee in powder form of ampoule, the whole top or the bottom surface of filter element.

Although represent not too obviously among Fig. 1-4, but lid advances/discharging opening and/or cup advance/and discharging opening preferably blocks with a film, for example film can be made with the laminated multi-layer plastics, can it be taken off or can it be pierced through or stave by machine with hand in leaching process.

Perhaps, can block advancing/discharging opening of the advancing of lid/discharging opening or cup by the integral surface that in the process of making the lid part, produces, perhaps block them with rubbery stopper or seal, this will be described hereinafter, and perhaps whole barrel is preserved in the sack or package that can be torn by hand before use.That sack or package may be made in the laminated multi-layer vacuum or under pressure, charge into inert gas (such as with improved anti-atmosphere package method (ModifiedAtmosphere Packaging) or claim the MAP technology).

Perhaps, can advance with edible solid matter (for example various polysaccharide, protein and lipid) sealing lid/discharging opening or cup advance/discharging opening, makes not porous of air, but can separate or can be melted by water-soluble by inlet water temperature.

Barrel 1 is preferably made with polypropylene and is to make with known injection molding technology.In any case this barrel of the present invention and any barrel can be with following any material manufacturings: other thermoplastic, for example PET; Artificial rubber-thermoplastic or TPE, SANTOPRENE for example, just non-EPDM that interweaves and polyacrylic mixture; Various thermosetting compositions, for example polyester; Rubber or artificial rubber, for example silica gel or MVQ; Laminated multi-layer thermoplastic, for example laminated film made from PE, PET and PVDC; Aluminium; Other layer laminates, for example laminated film made from PE, PET and aluminium.Also available other technical method of barrel 1 is such as the hot forming manufacturing.

As the main body of that typical barrel of describing among Fig. 1 is that for example 30-35mm height, 35-40mm are wide, and lid advances/and discharging opening and cup advance/and discharging opening all is that about 7-8mm is high and 8-10mm is wide.But those skilled in the art that are readily appreciated that: according to the structure of leaching requirement and beverage extraction machine, the size of barrel of the present invention can be different.

Key property by the barrel 1 that defined, will be understood that: this barrel can be eliminated being infected with of existence always of the leaching chamber of coffee machine, because cup advances/and discharging opening/flow export 6a plays the effect of outlet, and its beverage that leaching is come out directly flows to the outer cup of machine, for drinking subsequently.Correspondingly, flow export 6a is configured as and can be used in known filter mounting yoke or protrudes in outside the filter mounting yoke of making by special-purpose, can keep the inner surface of filter mounting yoke to clean very much and can prevent to be contacted with these surfaces from the beverage that barrel leaches out like this.

In addition, direct forming allows in the barrel additional fluid guide to be set no longer on the many sulculuses road on the inner surface of cup part, and can advantageously advance with cup/discharging opening is combined and form the integrated form conveyer that can carry the beverage that leaching comes out.Simultaneously, these sulculus roads allow with barrel, fall in the upper area of coffee cake and the internal pressure between the lower area and to remain a lower basically numerical value, therefore all the coffee in powder form of amount obtains utilizing, and the beverage that leaching is come out has the aesthetic quality of enhancing.

For the reason on the function, preferably remain the space at the end of coffee cake and cup part or lid part as far as possible little.

Another improvement that specific barrel comprised shown in Figure 1 is that it can be put upside down, that is to say, also can turn it around to insert.In fact, the main body of barrel is to be configured as substantial symmetry in an imaginary plane perpendicular to water filling axis (water injection axis).Specifically, cup advances/and discharging opening 6a and lid advance/and discharging opening 6b is identical basically on shape and size, they are all in alignment with same water filling axis, and the height of sidewall 105a is substantially equal to the height of cylindrical side wall 105b, as shown in Figure 2.Advantageously, on the inner surface of cup part and lid part, all be provided with many meticulous tank circuits.

Therefore, barrel 1 can be installed together in the container of filtration, no matter which advance/discharging opening plays the import effect, also no matter which advance/discharging opening plays the outlet effect, this is convenient to carry out barrel is injected operation in the leaching machine very much.

Although the typical embodiment with reference to Fig. 1-4 has represented various characteristics, but, by suitably making up each fundamental characteristics that has illustrated or increasing also is other design feature that belongs in the scope of the present invention, and several alternative embodiments of the present invention can be provided.

With reference to Fig. 5, wherein described second preferred embodiment of the present invention.Specifically, Fig. 5 is the cutaway view of barrel 11, though its main body is similar to the barrel of describing among Fig. 1 in appearance, its internal structure has some new characteristic.

Though Fig. 5 is the cutaway view of barrel 11, will be understood that this view is along one the barrel of whole reality imaginary sagittal plane in two to be cutd open to get, understand for simplicity, in each figure, imaginary plane is not showed.Clearly, those skilled in the art that are easy to imagine the structure that whole barrel 11 from the cutaway view of Fig. 5.

Barrel 11 be substantial cylindrical and comprise cup part 12 and lid part 13.At the bottom of cup part 12 has glass 17, sidewall 18 and rim of a cup edge 19a, the latter is basically facing to the cup end 17 and define the openend of cup part 12.

In the time of on the openend that lid part 13 is installed in cup part 12, the cup end 17, sidewall 18 and lid part 13 just define an internal capacity.The coffee in powder form of ampoule is encapsulated in this internal capacity, is sealed by filter, and the sealing mode can be similar to the sort of mode depicted in figure 2, or makes the tablet or the material cake of known type, and this will illustrate in greater detail hereinafter.

Among Fig. 5, for the sake of simplicity, omitted coffee in powder form and filter element, but should be able to imagine, they are full of the internal capacity of barrel basically, and this situation with the embodiment of Fig. 2 is the same.

Cup part 12 comprises that a cup advances/discharging

opening

16a, 17 centre and protruding with respect to the internal capacity of barrel at the bottom of it preferably is positioned at glass.This cup advances/discharging opening 16a be substantial cylindrical and for the internal capacity of barrel provides the path of opening, so just allow fluid to flow to or flow out the internal capacity of barrel.For this purpose, advance/discharging opening 16a, be provided with a perforate 113a on 17 at the bottom of the cup corresponding to cup.

The cup end 17, preferably comprise a sidewall 115a, and it is aligned in sidewall 18 and protruding with respect to the internal capacity of barrel.

The shape of lid part 13 can match with the openend of cup part 12 to merge and comprises 17b at the bottom of the lid, and 17b is upwards and stretch out slightly at the bottom of the lid for columniform sidewall 115b.Sidewall 115b ends at ring edge 19b, and ring edge 19b also supports thereon so that be matched with the rim of a cup edge 19a of cup part 12 roughly facing to 17b and protruding from sidewall 115b at the bottom of the lid.

Preferably, ring edge 19b has a roughly step-like section, so it can be engaged in the complementary supporting part at the 19a place, rim of a cup edge of cup part 12, as shown in Figure 5.Perhaps, ring edge 19b and rim of a cup edge 19a also can adopt the section of other shape, as long as it can guarantee that lid partly is fixed on cup and partly goes up.

Lid part 13 comprises that also a lid of closing usually advances/discharging opening 16b, and it preferably is positioned at the centre of 17b at the bottom of the lid and protruding with respect to the internal capacity of barrel 11.So-called " normally closed " is meant that this mouthful was hermetic closed before leaching, this mouthful can be struck with the hand open or automatically be opened by the beverage extraction machine by the user when beginning to leach, and for example punctures the surface of blocking this mouthful.

In the embodiment of Fig. 5, lid advances/and discharging opening 16b is by blocking with the lower surface 14 of a weakness of its all-in-one-piece.Perhaps, can advance with being welded on lid/plastic sheeting on the outer lip of discharging opening blocks lid and advance/discharging opening, perhaps block lid with the stopper of rubbery stopper or rubber like or seal and advance/discharging opening, this will be described hereinafter.

Lid advances/and the inner surface of discharging opening 16b is smooth basically, but also can be described with reference to the embodiment of Fig. 2 as the front, the mobile grid of fluid is set.

Cup part 12 comprises that a cup advances/discharging opening 16a, at the bottom of it is positioned at glass on 17 and the shape of substantial cylindrical preferably arranged.In preferred embodiment shown in Figure 5, cup advances/17 centre at the bottom of discharging opening 16a is positioned at glass, outwards outstanding with respect to the internal capacity of barrel 11.And cup part 12 also comprises grid 114,117a and 117b, be used for flow through cup and advance/the straight fluid flow point of discharging opening scatters.

First grid 114 be formed in cup advance/discharging opening 16a in, near it the outflow lip and radially cross cup and advance/internal capacity of discharging opening, and the second grid 117a and 117b be from cup advance/inner surface of discharging opening is outstanding and face one another.

Be similar to the embodiment that Fig. 2 describes, cup part 12 comprises many rib 111a, their direct forming at the bottom of cup 17 inboard and outstanding to the internal capacity of barrel.Each rib 111a define at the bottom of the cup 17 and filter element between many sulculuses road 112a and 112b, be used for that the beverage that leaching is come out is transported to cup and advance/discharging opening 16a.

In specific embodiment shown in Figure 5, different with lid part 3, in lid part and comprise between the sub-assembly of coffee in powder form and filter element the meticulous tank circuit is not set.Generation be, on the bottom side of lid part 13, be provided with sparse several rib 111b, be used between lid part and coffee in powder form, producing very little space.But clearly, the meticulous tank circuit still can be set replace this structure, as top described with reference to lid part 3.

Advantageously, barrel 11 comprises valving, is used to regulate flow through cup and advance/the fluid stream of discharging opening 16a.This valving be advance for being applied to this cup/discharging opening is specially designed, but the cup that they also can not only be applied to barrel of the present invention advances/discharging opening but also can be used for lid and advance/discharging opening, or only be applied to lid and advance/discharging opening, this depends on the functional requirement of barrel.

In the embodiment shown in fig. 5, valving is contained in 15 li of annular recess that are shaped around perforate 113a and covers perforate 113a.For this purpose, the thickness at the cup end 17 preferably become from circumferential cup advance/discharging opening 16a thickeies gradually, to allow to be shaped recess 15.

This valving preferably comprises the sealing plate or the disk of a rubber (for example silicon rubber), rubber like, artificial rubber or plastics, and be shaped on it little slit or aperture penetrate the top surface of sealing plate in its basal surface.If not having axial compressive force to put on this slit of this sealing plate is gas-tight seal, if and applied axial compressive force, pressure as the osmotic fluid that leaches out from coffee in powder form, the part of sealing plate makes the slit widens slightly with regard to warpage, passes through with regard to the beverage that allows osmotic fluid just to leach out like this.

According to the specific embodiment of describing among Fig. 5, this valving comprises the rubber gasket sheet or the disk 116 that lean against 15 li of recesses, thereby its gastight closing cup advances/the perforate 113a of discharging opening and play the effect of an active clapboard.Although sealing plate 116 is illustrated as leans against 15 li of recesses simply, can randomly it be bonded in the recess or with known technical method and fix it.

Sealing plate 116 has circular end face and circular bottom surface and slit 118, and this slit penetrates into the center of bottom surface vertically from the center of end face.

Slit 118 penetrates in advance, and it preferably uses thin needle penetration.Perhaps, slit can be one radially linear incision or the otch of " ten " font, the a plurality of slits that penetrate sealing plate maybe can be set, yet as long as these slits, otch or cross recess not to be in fluid pressure following time not allow air in the barrel therefrom by allowing osmotic fluid therefrom to pass through basically at barrel in leaching beverage process.

In order supporting to be provided for the filter element wrapping coffee in powder form and, at the bottom of a pad 119 advantageously is installed in glass on 17 and in the upstream of sealing plate 116 for the beverage that leaching is come out is transported to sealing plate 116.

Special three-dimensional Section View with reference to Fig. 7, the pad 119 of its expression comprises a bottom surface, it is communicated with the tank circuits 319 in the face of many fluids that sealing plate 116 and its shape define between pad and the sealing plate, and for this purpose, the bottom surface of pad 119 comprises several ribs 219 of radial directed.

The end face of pad 119 comprises a plurality of vallums that are used to support coffee-filter element assembly, and these vallums are sized to make the thickness of pad 119 to be substantially equal to the height of the rib 111a of cup part 12.

In each alternative embodiment of in each figure, not representing, pad can comprise several through holes that can be transported to osmotic fluid rubber gasket sheet, perhaps can by any other, can the supporting arrangement that the coffee in powder form of ampoule is divided in rubber gasket sheet be constituted, such as those devices of being described among Figure 27 hereinafter explanation.

Yet in another embodiment, valving does not comprise independent pad.For example, the 3rd embodiment of such replacement valving that comprises of the present invention only comprises sealing plate or the disk made from rubber, rubber like, artificial rubber or any elastomeric material.

Specifically, with reference to Fig. 6, the barrel 21 of the 3rd preferred embodiment of the present invention comprises a columniform cup part 22, and at the bottom of it comprises glass 27, sidewall 28 and an openend, lid part 23 is buckled on the openend, thereby forms the internal capacity of barrel.The same with previously described barrel, the coffee in powder form and the corresponding filter element of ampoule are housed in this barrel, but for the sake of simplicity, they are not showed among Fig. 6.

Lid part 23 comprises that the lid of closing usually advances/discharging opening 26b, and its design feature identical with the lid part 13 that has illustrated basically.

Cup part 22 comprises that cup advances/discharging opening 26a, and its inside is provided with fluid mobile grid 124,127a and 127b.Also have, the end face at the cup end 27 comprises many ribs 121, these ribs be arc and be distributed in glass at the bottom of 27 whole surface, identical with rib 111a basically, thereby define the little tank circuit of the different annular concentric of many radiuses, these little tank circuits converge at an annular recess 25.A round rubber sealing plate 126 leans against on this recess 25, thus blocking cup airtightly advances/the perforate 123a of discharging opening 26a.Lean against simply on the recess 25 although here sealing plate 126 is illustrated as, can randomly it be bonded in the edge of this recess, or adopt other known measure to fix it.

Be similar to sealing plate 116, the centre of sealing plate 126 comprises a slit that penetrates 128, and this slit is normally closed, and its is understood widens slightly and allows osmotic fluid to pass through in the process of leaching beverage.

For coffee in powder form and the filter element that supports ampoule, sealing plate 126 preferably comprises several vallums 129, these vallum direct forming are on the end face of sealing plate 126, and it is shaped as the fluid that the tank circuit that directly flows out from coffee-filter assemblies and limit from vallum 121 flows out path is provided.

Sealing plate

116 and 126 has been illustrated as with rubber, artificial rubber or other elastomeric material above and has made.The elasticity of this class material allows to play gas-tight seal such as the hole that penetrates in advance of slit 118 or slit 128, and this material is easy to be reacted in the outside of the internal capacity that acts on barrel and the compression of the inside simultaneously.In other words, such sealing plate can play valve or flow-stopping plate.

So, if sealing plate is applied to lid and advances/discharging opening to be similar to above-mentioned mode, comprise that the barrel of such sealing plate does not need to use any device, such as the diaphragm that film maybe can puncture, stopping up cup advances/and discharging opening or lid advance/discharging opening.Simultaneously, after leaching process finished, the unexpected decline of internal pressure can make slit turn back to initial inactive state, and this can prevent the phenomenon of residual fluid from wherein oozing in the contingent barrel.

Above-mentioned sealing plate is except that protect barrel to avoid the influence of adverse environment as valve works; allow the fluid that barrel discharge gas and permission leach out after leaching, to fall simultaneously; it also allows to charge into liquid inert gas at packing stage (MAP) from the outside with hollow needle; adjusting the internal state of this material capsule, and it can be deposited the long period.After the bobbin that is used to charge into gas was pulled out, this rubber gasket sheet can rely on the elasticity of self automatically to close slit on it.Used pin can be to be used for the puncture through seal plate equally and the pin that forms above-mentioned slit.

Simultaneously, another significant advantage that this sealing plate of the present invention brought is: can improve formation and stability on the end face that leaches the beverage that comes out, that can perceive the butterfat froth bed that obtains greatly, according to flash distillation coffee extract access method coffee soaking the time, this butterfat froth bed normally uses Italian title " crema " to express.

Can obtain the heterogeneous beverage of the froth bed that constitutes by little bubble with the flash distillation leaching method, little bubble disperses very fine and smoothly, it forms typical characteristic brave tail shape pattern on the end face of the emulsion of microcosmic oil droplet in many compositions aqueous solution, have the floating bubble and the solid particle of dispersion.

Naturally the surfactant that exists in the formation of foam and the coffee is relevant, and is also relevant with the many phenomenons that caused by the flash distillation leaching method.

The supernatant foam of flash distillation coffee or title crema are extremely important organoleptic attributes, and are signs distinguishing flash distillation coffee and other coffee preparation method.

As everyone knows, foam characteristic is intact preparation method's a symbol, and any difference (for example pressure of the temperature of the fine grinding degree of coffee, water, water, time of penetration and/or beverage volume or the like) or any change (for example the compound of coffee, cure situation or the like) all will directly influence color, morphological feature and the persistence of flash distillation foam.

As mentioned above, the valving of preferred embodiment of the present invention comprises the sealing plate or the disk of at least one rubber or rubber like, and a slit that penetrates is arranged on it, and the size of slit is very little, and for example, it has only 0.1 to 0.5mm when being opened.Have been found that the denseness and the stability that force the coffee that is leached to increase coffee top layer foam greatly by this slit.This phenomenon is very favorable, because by collection such element that weight is quite light and simple in structure of packing into, just can reach a kind of important result that can characterize the speciality of flash distillation coffee beverage.

And, because being used to form the rubber gasket sheet of top layer foam is to become one with barrel, and barrel generally is once to use just to discard afterwards, has top-quality surfactant foam layer so can guarantee the flash distillation coffee that leaches out, and on existing flash distillation coffee machine, the formation of strengthening the top layer foam is realized that by the construction of coffee machine part those parts are used for leaching process various times, with having got for a long time, they can make the quality of leaching the coffee beverage that comes out descend.

Barrel of the present invention is not limited to substantial cylindrical barrel described above.Specifically, term " cylindrical " has been interpreted as general sense widely, and its general reference is turned round and the surface that forms around a fixing axis and the line that intersects at a sealing by any line parallel ground.For example, the main body of the barrel of each specific embodiment of the present invention can be a parallelepiped shape, also can be plate-like.Also have, term " substantial cylindrical " also is the cylindrical barrel that general reference has slight frustoconical shape, and in other words, for example, the sidewall of barrel of the present invention can be with respect to 1 °-2 ° of real cylindrical surface deflections.

When requiring to take little space, the barrel of parallelepiped shape (all not expressions among each figure) is desirable especially.

And, do barrel discoid and be favourable, just explain these reasons now owing to some other reason.Fig. 8 and 9 described a typical embodiment of the present invention, and wherein the main body of barrel is a plate-like roughly.This barrel 31 has some design feature of above-mentioned barrel, specifically, it comprises cup part 32 and lid part 33, and they all are plate-likes roughly.

Cup part 32 comprise 37, one annular sidewall at the bottom of a glass and be roughly parallel to glass at the bottom of a flange 39a of 37, similarly, at the bottom of lid part 33 comprises lid, sidewall and flange 39b, flange 39b is configured as and can be meshed with flange 39a, so limits the internal capacity of barrel.The shape of this internal capacity of barrel just in time can be held the coffee in powder form sheet stock or the biscuit 34 of known type, such as being called as E.S.E.

The coffee sheet stock.

This known coffee tablets material package is drawn together the coffee in powder form that is encapsulated in the ampoule in the papery filter bag, and when barrel 31 was in confined state, the periphery of barrel paper bag was pushed down tightly by flange 39a and 39b.Can weld or other solder technology, bonding such as ultrasonic bonding, thermal element, or these methods are combined in edge pressure commonly used or deformation method with any known method, fastened to each other flange 39a and flange 39b.

Cup part 32 comprises that also the cup with respect to the outwardly directed substantial cylindrical of internal capacity of barrel 31 advances/discharging opening 36a, it advantageously is provided with inner grid 137a and 134a, be used for dispersion train to cross cup and advance/the straight fluid stream of discharging opening, these lattices are similar to above-mentioned grid 117a, 117b, 114.

The cup end 37, comprise the many ribs 131 that are distributed on the flat inner surface, and these ribs form the sheet stock 34 and the many little tank circuit of cup at the end 37.Rib 131 leans against on this annular recess 35 round 35, one rubber gasket sheets 136 of the annular recess center, that be similar to above-mentioned

recess

15 and 25.

The center of sealing plate 136 has a slit of closing usually that penetrates and the several supporting ridges on its end face, and the latter is used to support sheet stock 34 and allows fluid from flowing through between them.Availablely find out that sealing plate 136 is similar to above-mentioned sealing plate 126.

Lid advances/and discharging opening 36b stretches out from the centre of lid part 33, and the grid 137b that faces one another arranged on its inner surface.

Fig. 9 is the cutaway view of barrel 31, like this, though it only expresses a grid 137b, will be understood that: advance at lid/opposite side of discharging opening inner surface also has one in the face of represented grid, identical grid.Also having, lid advances/and the perforate in the place that discharging opening 36b stretches out is a gap bridge with a fluid flow baffles 134b, and this baffle plate is substantially similar to above-mentioned baffle plate 104b.

Before barrel was put into the flash distillation coffee machine, lid advanced/discharging opening 36b blocked by an aluminium foil or laminated multi-layer plastic sheeting 38, and it forms lid and advances/gas-tight seal of discharging opening.Preferably, film 38 is to be punctured by the water injection needle of coffee machine, but also can take off with this film of handgrip.

The same with the barrel of describing in Fig. 5 and 6, have the several sparse vallum that stretches to internal capacity on the surface of lid part 33, they have formed little space between coffee sheet stock 34 and lid part 33 itself.

Barrel 31 is particularly advantageous, because it can match with existing coffee sheet stock fully.The manufacture process of this barrel also is very fast, because do not need to put into more any filter element in this barrel.

Also have, availablely find out: barrel 31 and above-mentioned other barrel all are the monoblock type barrels that has a style of one's own, that is to say, the most of functional characteristics that comprised the flash distillation coffee machine in the barrel so all are integrated in the barrel itself such as the enhancing of filtration, water filling distribution, top layer foam and the outflow of beverage.When adopting this barrel, the function of flash distillation coffee machine mainly is a supporting barrel and in the water of the certain pressure injection barrel.

Figure 10 is the cutaway view of the barrel 41 of another embodiment of the present invention.This barrel comprises most of characteristics of barrel 1, that is to say, coffee in powder form 4 and filter paper 5a and 5b that a cylindrical cup subdivision 42, ampoule are arranged, the cup end 47, comprise many rib 141a and a flow export 46a who has the mobile grid 144 of fluid and 147.Film 45 aluminium or laminated plastic system is blocked the lip of flow export 46a, and it is that available hand is taken off.

Different with barrel 1, this lid part 43 is generally flat disc shape, the lid that it comprises the plane that only protrudes in lid part slightly advances/and discharging opening 46b and protrude in the ring edge 49b of lid profile partly slightly.

With reference to Figure 10 and 11, lid part 43 inboards comprise the several sparse radially vallum 141b that gives prominence to the internal capacity of barrel slightly, thereby form little space between superincumbent filter element 5b and the lid part 43.

Also have, lid part 43 comprise a rubber/stopper or the seal 48 of rubber like, it is engageable to advance/lip that discharging opening 46b forms in lid.Stopper 48 is preferably used such as the thermoplastic elastomer of EPR or SBS (TPE) and is made, and there is a thin part that can be punctured by the water injection needle or the nozzle of for example flash distillation coffee machine in its centre, and have round the center thin part than thickness portion, this thicker part be stuck in lid advance/lip of discharging opening 46b on.

The part thin than thickness portion and center of stopper 48 is sized to be engaged in hermetically pipe or the nozzle that supplies water to barrel.In other words, for water injection pipe or nozzle, stopper 48 plays the effect of radial fluid seal, like this, in leaching beverage process, can prevent the water that injects from lid advance/discharging opening 46b comes up.

When breaking away from the water filling nozzles in the leaching process end and with barrel 41, stopper 48 relies on the elasticity of self to get back to a resting position, though it is punctured, but it still can block solid and fluid residue well, as long as taken out in coffee machine with the barrel of crossing, those residues just are retained in the barrel.

Although stopper 48 is expressed as on barrel 41, will be understood that such stopper can be applied to any other barrel of the present invention, such as being applied to each above-mentioned barrel.

Figure 27 has described the barrel 81 of another embodiment of the present invention.This barrel comprises roughly the characteristics corresponding to those characteristics of barrel 21, that is to say, cylindrical cup subdivision 82a is arranged, 87a comprises that many ribs 181 and the tank circuit 182 and the outwardly directed cup that are shaped thereon advance/discharging opening 86a at the bottom of its glass, lid part 83a is fixed in the rim of a cup edge, top of cup part 82a, thereby forms an internal capacity that coffee in powder form biscuit and filter element (not shown) wherein are housed.

Lid part 83a comprises 87b at the bottom of the lid, be formed with the several sparse vallum that is similar to vallum 111b on it, lid part comprises that also the lid of closing usually advances/discharging opening 86b, and this mouthful is preferably disposed on the centre of 87b at the bottom of the lid and protruding with respect to the internal capacity of barrel 81.Lid advances/and discharging opening 86b blocks by a film aluminium or laminated plastic system.

Lid advances/inner surface of discharging opening 86b is smooth basically, the fluid of " a ten " font flow grid 89 lid is advanced/discharging opening 86b stretches out the perforate 183b quartering at place.Grid 89 preferably stretches to the internal capacity of barrel, the filter element that is covered with the granule materials cake is remained the lid of lid part 83a at the bottom of 87b a distance is arranged.

Lid advances/and the diameter of discharging opening 86b generally advances/diameter of discharging opening greater than above-mentioned other lid, need not to insert with bobbin the internal capacity of barrel so that admit the water filling nozzle fully.This lid advances/and the internal diameter of discharging opening is preferably 5mm at least, but this diameter can be bigger, for example can be substantially equal to the diameter of 87b at the bottom of the lid.

Each rib 181 of cup end 87a is round the annular recess 85a at center, and this annular recess 85a be configured as round cup advance/discharging opening 86a stretches out the perforate 183a at place.Sealing ground comprises a plurality of prominent bars 184 round those ribs of perforate 183a, and these prominent bars radially stretch to the center of perforate 183a and are the same thick with rib 181.Prominent 184 pairs of granule materials cakes of bar and filter element play supporting role, simultaneously also as fluid fluidizing grid lattice that disperse straight fluid stream.

Barrel 81 also comprises a rubber gasket sheet 186, and it is installed between prominent bar 184 and the annular recess 85a and comprises that a center penetrates slit.As above-mentioned, rubber gasket sheet 186 is valvings.

Cup advances/and discharging opening 86a advantageously comprises the fluid grid 187 that flows, and grid 187 is one and inserts cup in/discharging opening and closely be matched with the independent part of its inner surface.Fluid flow grid make independent part and directly do not advance at cup/inner surface of discharging opening 86a on the shaping grid be a kind of favourable structure, this structure is particularly suitable for so-called order molded manufacturing technology (sequential moulding manufacturing techniques).

" independent " grid 187 preferably comprises a little hollow plastic tube 188, and two openend seals with the filtering material of fluid penetrable, for example sieves film or the mazy fabric/paper of material (plastic sieve material) with plastics.Perhaps, the interior panelling that can be shaped at the inner surface of pipe 188 makes it be substantially similar to above-mentioned baffle plate 114,117a and 117b.

In the embodiment that Figure 27 describes, pipe 188 comprises sieve membrane 185b and following sieve membrane 185a.Advance for grid 187 is fixed in cup/inner surface of discharging opening 86a, a circumferential rib 189a is set on the lateral wall of pipe 188, be used to card and fit over and form in cup in the corresponding annular groove 189b of the inner surface of/discharging opening 86a.Clearly, those skilled in the art that can find out many other structures and come that independent grid is fixed in cup and advance/discharging opening or lid advance/discharging opening.

With reference to Figure 12-15, the barrel of another embodiment of the present invention or material capsule 51 comprise a cup part 52, and it has the cup end 57 and the circumferential flange 59a on its rim of a cup of a sealing.Generally flat lid part 53 is fixed in cup part 52, for example by axial thermal weld the circumferential edges 59b of lid part 53 is welded in flange 59a.Clearly, can adopt any known interconnection technique,, or these methods are combined in pressurization or deformation technology, come lid partly is fixed in the cup part such as ultrasonic bonding, bonding.

Lid part 53 comprises that section is that the lid of closing usually of M shape advances/discharging opening 56b, and also comprise grid 151a and 151b, be used in lid part and fill at 51 li in capsule of material and be to form little space between being clipped in such as the coffee in powder form 54 of the ampoule in the middle of the filter element of filter paper.

At the bottom of the cup 57 and the coffee in powder form of ampoule between constitute the volume of the sky of a general conical, puncture part 159 and be contained in this volume.Here it is to use part that make such as the material of duroplasts, penetrative that this punctures part, has on it from the awl point 156 of its supporting part 157 projections.

Puncture part 159 and be arranged in the empty volume of above-mentioned taper, it is retained as the awl point 156 that makes it and aims at cups and advance/center of discharging opening 56a usually, as shown in Figure 13.

In this preferred embodiment, the supporting part 157 that punctures part 159 is disks, and it is stretched in the whole bottom surface of the coffee in powder form of ampoule, and this disk comprises the many through holes 55 that are evenly distributed on its end face.And the downside surface that punctures part 159 preferably comprises several radially vallums 154,158.

In the preferred embodiment that Figure 15 describes, the awl point 156 that punctures part comprises the several surface grooves 155 that extend longitudinally to the bottom surface of disk 157 from the tip, makes awl point 156 look the cutter head that looks like cross head driver.Clearly, this shape is chosen wantonly, can make other shape to awl point 156, as long as it makes and punctures part and can puncture at the bottom of the cup of this barrel 57.

In the beverage extraction process at the beginning, when the filter mounting yoke being inserted bayonet type and admits seat, to 57 applying mechanical pressure at the bottom of the cup so that it collapses flat to puncturing part.So cup advances/and discharging opening 56a is just punctured by awl point 156, thus the beverage that automatically comes out for leaching forms an outlet.Maintain the required space of beverage that outside conveying leaches out by vallum 154,158 and groove 155.

Replace be lid advance/water filling nozzle that discharging opening 56b is leached machine punctures, the water of injection is dispersed throughout the end face of the coffee in powder form of ampoule by means of the surface configuration of lid part 53.

Material capsule 51 can for example comprise that the plural layers of PE, PET and PVDC are made preferably with thermo shaping method laminated multi-layer thermoplasticity or thermosetting plastics film.With such manufacturing technology, the finish mix capsule is very light, be convenient to take, and the also packaging material of available appropriate amount.

Therefore, availablely find out: this material capsule 51 integrates most of characteristics of various standards leaching chamber and other barrel of the present invention, and it can guarantee the airtight preservation of coffee in powder form.

Also have, in leaching process, advance at cup/discharging opening 56a place automatically forms an outlet, exports the beverage that is leached out by this and can directly flow to machine outer coffee cup or glass, and can not be infected with barrel or filter mounting yoke.

Each embodiment of barrel of the present invention described above.According to a second aspect of the present invention, describe the flash distillation coffee machine that is used for standard or the extraction assembly of other coffee machine below in detail, these coffee machines all are to be used for the hot water of preparation of drinks or other soaks fluid with certain pressure pump pressure.

With reference to Figure 16-18, the extraction assembly of a preferred embodiment of the present invention comprises a supporting member that can be connected in the flash distillation coffee machine, this supporting member preferably comprises a connector members 62, be used for extraction assembly is connected in beverage extraction machine water injection pipe, this supporting member also comprises a bayonet type admittance seat 63.

Connector members 62 has an end and a cylindrical side wall, and this sidewall is to stop the end of to rising and with a flanged edge, and this edge is used for supporting member is installed in leaching machine (not shown), for example installs with screw.Have an import of stretching out 65, it can be connected in the delivery port of leaching machine at the end of connector members 62, and has an annular draw guide wall 259 on the opposite side at the end, and it is described below.

Bayonet type admit seat 63 be substantial cylindrical and comprise a upper open end, the cylindrical side wall of connector members 62 can be matched with in it.Preferably, available screw admits bayonet type seat 63 to be fixed in connector members 62, and these screws are identical with the screw that is used for connector members 62 is installed on the leaching machine.Clearly, can be fastened to each other bayonet type admittance seat 63 and connector members 62 with other known mode, for example, can admit the outer surface of the cylindrical side wall of connector members 62 and bayonet type the inner surface of the cylindrical side wall of seat 63 all process screw thread and be connected to each other.Perhaps, can admit connector members 62 and bayonet type seat 63 to be made for a single piece.

Bayonet type admits seat 63 also to comprise a bottom open end, and the guiding piece 263 of known type can be set on it, is used for bayonet fittings in being provided with the barrel admittance seat 64 of lever 61 on the other hand.

Barrel admits seat 64 to comprise the body of substantial cylindrical, and its internal configuration is for being received in barrel 21 in it.Specifically, the sidewall 28 of its inboard cylindrical side wall and barrel is adaptive mutually.

Also have, barrel admits the bottom of seat 64 to comprise an annular groove 261, and the flange 125a of barrel can be slided and join in it, and at the bottom of barrel admits seat 64 also to comprise one 250, it is positioned at barrel and admits cylindrical body and its centre of seat that one perforate 267 is arranged.

Therefore the degree of depth of annular groove 261 is substantially equal to the height of flange 125a, and when barrel 21 being injected barrels and admit 64, the surface of main body 27 almost completely leans against at the end 250, and cup advance/discharging opening 26a protrudes in perforate 267.

So barrel admits the interior shape of seat 64 to correspond essentially to the outer shape of barrel 21, can guarantee barrel closely cooperating in the admittance seat like this.

Extraction assembly 60 also comprises water filling nozzle assembly 265a, 265b, and their are fixedly mounted in the face of barrel with nipple for example and admit on the bottom open end of import 65 of seat.Perhaps, nozzle assembly and water inlet spare may be made in a single piece.

With reference to Figure 21 and 22, nozzle assembly comprise a nozzle body 265a and be installed on regularly nozzle body inner surface one puncture part or pin 265b.In more detail, nozzle body be generally tubular and comprise two openends 251 and 254.

It is enough big and can admit the lid that stretches out of barrel of the present invention to advance/discharging opening that openend 254 is positioned at the bottom of nozzle body and it, and for example lid advances/discharging opening 26b.

Openend 251 is limited to the upper end of nozzle body by wall 253, and its shape can closely be matched with the inner surface of the bottom open end of import 65.The inner surface of the outer surface of upper wall 253 and import 65 has all been made screw thread, and can be anchored on connector members 62 to nozzle body.Also can adopt other structure that nozzle assembly is connected in the import of connector members, as long as can guarantee the fluid close fit between them.

The outer surface of nozzle body 265a comprises a radially outstanding step portion 257, is used to limit moving axially of a barrel pusher 269, and this will be described hereinafter.On the other hand, the inner surface of nozzle body 265a comprises an annular projection 252, and it inwardly stretches and preferably be positioned at the middle part of the inner surface of nozzle body.

Pin 265b axially injects and is fastened in the hole of annular projection 252 qualifications.In order to allow fluid to flow to bottom open end 254, be provided with all through holes 256 252 li of annular projections from upper open end 251.

The inner surface of nozzle body 265a also comprises an annular groove 255, and it is positioned at the bottom section of same inner surface, preferably round bottom open end 254.One O-ring seals 266 is housed in this annular groove, and in the beverage extraction process, this sealing ring is set up the radial fluid sealing between the import 26b of nozzle assembly and barrel 21.

The great advantage that adopts O-ring seals 266 be it can prevent that the water that injects is infected with any inner body or the surface of extraction assembly 60 and the moistening barrel of water that prevents to inject, to touch and the outer surface of taking and placing by the user.Therefore, can guarantee fabulous safe and sanitary state, guarantee that the leaching machine can be inferior with hundreds of, and needn't clean the part of extraction assembly, admit seat 64 and supporting member 62,63 such as barrel.

Like this anti-is infected with the integration member that structure also can advantageously be combined in the flow export of barrel of the present invention.Same beverage extraction machine and same extraction assembly can successively be used to be equipped with the various barrels such as different foods such as coffee, chocolate, tealeaves or herbal medicine, soup stock, other heat milk beverages, and the major defect of existing common system can not appear, these major defects are meant being infected with mutually and the leaching result is had adverse effect of beverage of leaching successively.

Also have, the elasticity of O-ring seals 266 allows to use the different barrel of import radial dimension, as long as those radial dimensions are no more than the average diameter of the bottom opening 254 of nozzle assembly.

In order to strengthen the practicality of extraction assembly, a barrel pusher 269 be installed in by guide wall 259 and nozzle body 265a, protrude in the annular space that part limited of water inlet 65.Barrel pusher 269 is annulars roughly, and its shape can preferably fit into by the bottom of guide wall 259, connector members 62, the lid part and the annular space that part limited nozzle body 265a, protrude in water inlet 65 in leaching process of barrel.

Barrel pusher 269 comprises a plurality of springs 268, and they are contained in respectively in the hollow shell of openend, the extended openend of spring.Contact surface in the bottom of each spring 268 conflict connector members 62 and each hollow shell that is arranged on the barrel pusher of conflicting respectively.

Barrel is being admitted seat 64 be fastened in bayonet type admittance seat at 63 o'clock, pusher 269 is pushed to the bottom of connector members 62, thereby each spring 268 is compressed.As can be seen from Figure 18, lid part 26b is punctured by pin 265b in this position, thereby water can inject in the barrel as described above.

In case admit barrel seat 64 to take out, pusher 269 just can remain on barrel to barrel 21 and admit 64 li of seats, and this as can be seen from Figure 20.In order when barrel admittance seat breaks away from, to prevent pusher to walk about, the inner surface that centers on the circular body of barrel pusher is provided with an annular projection 258, when pusher slided to barrel admittance seat downwards, this annular projection just leaned against on the step portion 257 of nozzle body 265a.

Although a specific embodiment of the extraction assembly that is used for the flash distillation coffee machine has been described in conjunction with the sort of barrel shown in Fig. 6, has will be understood that the extraction assembly that is specially adapted to any barrel of the present invention that any equivalence can be provided.

For example, with reference to Figure 19,, can design a kind of specific extraction assembly 70 that is applicable to discoid barrel 71 of the present invention according to mentioned above principle.

So far, still unspecified discoid barrel 71 still, by the combination of features of each embodiment of the barrel of the present invention that has described in detail, can be imagined this discoid barrel out at once.Provide this combination at this, can combine the part among each different embodiment and obtain some embodiment again to show, these embodiment belong to same inventive concept significantly, and are that those skilled in the art that can expect.

Barrel 71 combines the characteristics of barrel 11,31 and 41.In detail, it is roughly discoid, and the coffee sheet stock of known type is equipped with in its inside, as barrel 31.The cup of barrel 71 partly is similar to cup part 37, but comprises a sort of pad 119 that is used in 11 li of barrels and rubber valve or sealing plate 116; Sealing plate 116 is depicted as the state that has become shape that is in, and this distortion produces in leaching process.Being different from barrel 31, the lid of barrel 71 advances/and discharging opening only protrudes in the lid part slightly, and it is by a rubbery stopper or seal 78 sealings, and this stopper is identical with the stopper 48 that is used in 41 li of barrels.

Correspondingly, extraction assembly 70 comprises: the supporting member that can be connected in the flash distillation coffee machine, and it preferably comprises a connector members 72, is used for extraction assembly is connected in the water injection pipe of beverage extraction machine; And bayonet type receiver 73.

Connector members 72 comprises: a water inlet 75 is used to be connected in the water filling port of beverage extraction machine; And an annular wall 359, it admits the internal capacity of seat 73 to stretch out to bayonet type when it is installed on this connector members.

Bayonet type admit seat 73 be substantial cylindrical and comprise a upper open end, the annular wall 359 of connector members 72 is engaged in this openend.Preferably, admit bayonet type seat 73 to be fixed in connector members 72 by several screws, these screws are identical with the screw that is used for connector members is installed on the leaching machine.Clearly, can admit bayonet type seat 73 and connector members 72 fastened to each other with any known mode, for example can admit the outer surface of the cylindrical side wall of connector members 72 and bayonet type the upper inside surface of the cylindrical side wall of seat 73 make screw thread and be connected to each other.Perhaps, can admit connector members 72 and bayonet type seat 73 to be made for a single piece.

Bayonet type admits seat 73 also to comprise a bottom open end, and the targeting part 263 of type known is set on it, so that bayonet fittings is admitted seat 74 in barrel.

Barrel admits seat 74 to comprise a generally flat body, and the cup part of its interior shape and barrel 71 is adaptive.In addition, barrel admits the bottom of seat 74 to be included in the perforate 377 in its centre, and the cup of barrel 71 is stretched in this perforate advance/discharging opening 76a.

Admit seat 74 to be fastened in bayonet type securely at barrel and admitted seat at 73 o'clock, the flat circumferential edges 79 of barrel 71 closely remains on annular wall 359 and barrel is admitted between the edge of seat 74.

This extraction assembly also comprises a nozzle 275, and it is anchored on import 75 and admits seat outstanding to barrel.

With reference to Figure 23, nozzle 275 is hollow object of a substantial cylindrical, and it has an axial bore 359 that is used to admit from the water of water inlet 75, also has one and is configured as the pin of one with it or punctures part 358.Inner chamber 359 extends in this pin.This pin is axially hollow and comprises all radial direction through hole 356, so that water is roughly radially to flow out.

Also be provided with an annular groove 355 on the nozzle 275, specifically, this annular groove is round pin 358.Barrel is being admitted seat 74 be anchored on the thicker peripheral part that bayonet type is admitted the shape receivability stopper 78 of 73 o'clock these annular grooves of seat.As can be seen from Figure 19, in this position, stopper 78 is punctured by pin 358, thereby can inject water in the barrel, and the lid that stopper 78 can be set up nozzle 275 and barrel 71 advances/fluid sealing between the discharging opening.

So the effect of stopper 78 is to set up the sealing of the water inlet of extraction assembly and the radial fluid between the barrel, can prevent the outer surface of the moistening barrel of water that injects like this.

Advantageously, extraction assembly 70 comprises a barrel pusher 369, and it is contained in the annular space that is limited by wall 359 and nozzle 275, and it is similar to pusher 269.

Admit seat 74 to be anchored on bayonet type at barrel and admitted seat at 73 o'clock, pusher 369 is upwards pushed to connector members 72 by spring 368, and spring correspondingly is compressed.On the contrary, when barrel admitted seat 74 to be admitted seat 73 to take out from bayonet type, pusher 369 remained on barrel to barrel 71 and admits 74 li of seats.In order to prevent pusher to walk about when barrel admits seat to break away from, the inner surface that centers on the circular body of barrel pusher 369 is provided with an annular projection, and this projection leans against on the step portion of nozzle body 275 when pusher slides to barrel admittance seat downwards.

With reference to Figure 24-26, the extraction assembly 80 of another embodiment of the present invention comprises a supporting member that can be connected in the flash distillation coffee machine, and it preferably comprises: a connector member 82 is used for extraction assembly is connected in the water injection pipe of beverage extraction machine; And a bayonet type is admitted seat 83.

Connector members 82 has a bottom and rises from this bottom and with a cylindrical side wall that has the edge of flange to stop, this edge is used for this supporting member is installed in leaching machine (not shown) by for example screw.The bottom of connector members 82 comprises: an import of stretching out 85, and it can be connected in the delivery port of leaching machine; And in an annular guide wall 459 of the opposite side of bottom.As can be seen, connector members 82 is substantially similar to the connector members 62 that illustrates previously.

Bayonet type admit seat 83 be substantial cylindrical and comprise a upper, open end, the cylindrical side wall of connector members 82 is engaged in this openend.Preferably, admit bayonet type seat 83 to be fixed in connector members 82 by several screws, these screws are identical with the screw that is used for connector members is installed on the leaching machine.Clearly, can admit bayonet type seat 83 and connector members 82 fastened to each other with any other known mode, for example can admit the outer surface of the cylindrical side wall of connector members 82 and bayonet type the upper inside surface of the cylindrical side wall of seat 83 make screw thread and be connected to each other.Perhaps, can admit connector members 82 and bayonet type seat 83 to make a single piece.

Also have, bayonet type admits seat 83 to comprise a bottom open end, and the targeting part of some known types is set on it, so that bayonet fittings is admitted seat 84 in barrel.

For water being transported to 51 li of barrels, nozzle 285 is fixed in import 85 and stretches to barrel admits seat 84.

With reference to Figure 26, nozzle 285 is hollow object of substantial cylindrical, wherein is formed with the axial bore 459 that is used to admit from the water of water inlet 85.A hollow pin or puncture part 458 and dress up one with nozzle 285, inner chamber 459 extends to whole pin.Advantageously, this pin 458 comprises all radial direction through hole 456, so that water is roughly radially to flow out.

Also be provided with an annular groove 455 on the nozzle 285, specifically, this annular groove is used to hold O-ring seals 466 round pin 458, and the effect of this sealing ring is the fluid sealing of setting up in leaching process between the import 56b of nozzle assembly and barrel 51.

Advantageously, extraction assembly 80 comprises a barrel pusher 469, and this barrel pusher is contained in the annular space that is limited by wall 459 and nozzle 285, and it is similar to pusher 269.

Pusher 469 is preferably included in the peripheral annular rib 470 on its bottom side, and the shape of this circular rib is engaged in the waist circumferences of the lid part of barrel 51 when barrel admits seat to be fastened in bayonet type admittance seat.

Barrel is admitted seat 84 bodies with a substantial cylindrical, and its interior shape just in time holds barrel 51.Specifically, the shape of its inwall roughly adapts to the sidewall of this material capsule, and inwall ends at a ring shoulder 86 of upper area and has a perforate 477 of admitting the bottom section of seat at the material capsule.

The gradient of the bottom of barrel admittance seat 84 is slightly different with the gradient of the bottom of barrel 51.Preferably, barrel admits the bottom of seat 84 to be parallel to the

vallum

154 and 158 that punctures part 159 basically obliquely.Therefore, admit seat not to be fastened in the original state that bayonet type is admitted seat as yet fully at barrel, barrel 51 is that self-supporting is on the profile of perforate 477, with advance around cup/position of discharging opening 56a adapts, and flange 59a, 59b admit the ring shoulder 86 of seat 84 to be in a position of raising with respect to barrel.

Rotating barrel admittance seat 84 with hand and making it be fastened in bayonet type admittance seat at 83 o'clock, the lid part of barrel 51 contacts at the bottom surface of pusher 469 earlier, contacts at ring wall 459 then.Therefore, a pressure is put on bottom 57, make awl point 156 puncture cup and advance/discharging opening 56a, it is flat on the bottom side that punctures part 159 to be collapsed in bottom 57.

In the final position, in other words, position shown in Figure 25, barrel is admitted seat 84 to be fastened in bayonet type fully and is admitted seat 83, so this system just be the beverage extraction stage all set, cup advances/and discharging opening 56a fully opens, and the beverage that leaching is come out can directly flow out and enter coffee cup outside the machine.

Figure 25 also expresses, and has punctured the import 56b of barrel 51 at beverage extraction position nozzle 285." M " shape of import 56b makes the pin of nozzle 285 partly be easy to it is punctured.

Advantageously, in case admit barrel seat 84 to admit seat 83 to take off from bayonet type, pusher 469 just remains on barrel to barrel 51 and admits 84 li of seats.Walk about when barrel admits seat to break away from order to limit pusher, be provided with a annular projection 478, abut shoulder 457 what pusher this projection when gliding propped up nozzle body 285 around the inner surface of the circular body of barrel pusher.

Above-mentioned each extraction assembly all comprises a water filling nozzle that has bobbin, the internal capacity that is used to destroy the stopper suitable for reading or the seal of barrel and puts in barrel.Also have, the size suitable for reading of above-mentioned each barrel is suitable for corresponding nozzle and inserts.But, can between water filling nozzle and barrel suitable for reading, a relative engagement relationship be set, this does not depart from scope of the present invention yet.For example, with reference to Figure 28, the extraction assembly of another embodiment of the present invention comprises a supporting member that can be connected in the flash distillation coffee machine, it preferably admits seat 583 to form by an a connector member 582 and a bayonet type, and connector members 582 wherein is used for this extraction assembly is connected in the water injection pipe of this beverage extraction machine.

Connector members 582 have a bottom and rise from this bottom and end at a cylindrical side wall that the edge of flange is arranged, flange edge is used for for example by screw supporting member being installed in leaching machine (not shown).The bottom of connector members 582 comprises: an import 585 of giving prominence to, and it can be connected in the delivery port of leaching machine; And in the guide wall 559 of the circle of the opposite side of bottom.

Bayonet type admit seat 583 be substantial cylindrical and comprise a upper, open end, connector members 582 is matched with in this openend.Preferably, bayonet type admits seat 583 to be screwed in connector members 582, and these screws are identical with the screw that is used for connector members is installed on the leaching machine, and this is the same with situation in the various embodiments described above.Clearly, can be fastened to each other bayonet socket receiver and connector members with other known mode, for example, can admit the outer surface of the cylindrical side wall of connector members and bayonet type the upper inside surface of the cylindrical side wall of seat all make screw thread and be connected to each other.Perhaps, can admit connector members and bayonet type seat to be made for a single piece.

Bayonet type admits seat 583 also to comprise a bottom open end, which is provided with the guiding piece of some known types, is used for bayonet fittings is admitted seat 584 in barrel.

Barrel is admitted seat 584 bodies with a substantial cylindrical, and its interior shape just in time holds above-mentioned barrel 81.Specifically, it has the inner cylindrical sidewall that the sidewall with barrel matches.

Also have, barrel admits the bottom of seat 584 to comprise: an annular groove 561, and the lower flange cunning of barrel 81 is assigned in this annular groove; And an end 550, it is positioned at barrel and admits cylindrical body and its centre of seat to comprise a perforate 567.The shape at the annular groove 561 and the end 550 is such, that is, inject barrels at barrel 81 and admitted seat at 584 o'clock, and its bottom surface 87a almost completely leans against at the end 550, and cup advance/discharging opening 86a stretches out in perforate 567.

The extraction assembly of Figure 28 also comprise a water filling nozzle 575 its for example can adopt be threaded with it be fixedly mounted in import 585, admit on the bottom open end of seat in the face of barrel.Perhaps nozzle assembly and water inlet 585 are made for a single piece.

Nozzle 575 comprises that there is flange 557 at the hollow cylindrical body and its middle part that have two Rather, openings ends.

Hollow most advanced and sophisticated 558 flanges 557 from nozzle of substantial cylindrical stretch to barrel vertically admits seat, and it is configured as its external diameter and advances/internal diameter of discharging opening 86b less than lid.Therefore, when barrel is admitted seat 584 axially to be installed in bayonet type to admit on the seat 583 since lid advance/size of discharging opening 56b suitably, most advanced and sophisticated 558 can inject this lid fully advances/discharging opening.

Most advanced and sophisticated 558 is thicker than (commonly used) water injection needle, but it still be to advance/discharging opening as the lid of the part reeve barrel of a protrusion thin must being enough to, such as advancing/discharging opening 86b.Advantageously, most advanced and sophisticated 558 comprise an annular groove that is shaped around its outer surface, are used to hold the seal such as an O-ring seals 566.

Advantageously, this extraction assembly comprises a circular barrel pusher 569, and it is contained in the annular space that is limited by the wall 559 of connector members and nozzle 575, and it is similar to other above-mentioned barrel pusher.

With the axial float of clamping piece (snap-bracket) commonly used 578 restriction pushers 569, clamping piece extends upward and injects slidably the corresponding annular groove 579 around nozzle 575.Limit the blocking position-limiting action of clamping piece 578 by the flange 557 of nozzle 575.

Advantageously, circular barrel pusher 569 comprises a concentric madial wall 568, its size is confirmed as enabling limiting the annular space between the tip 558 of a water filling nozzle, when barrel 81 is installed into extraction assembly this space advanced by lid/sidewall of discharging opening 86b takes fully.So in the specific embodiment that Figure 28 describes, the barrel pusher also plays the effect that keeps wall, can stop lid to advance/discharging opening issuable expansion in leaching process.

The extraction assembly of Figure 28 has advantage of simple structure, and it has cancelled the bobbin that is used to puncture, and can guarantee that the nothing between barrel, leaching chamber and the water filling chamber is infected with connection simultaneously.In fact, no matter whether lid was closed before it is installed in the extraction assembly advance/discharging opening, the water filling nozzle all is to play a part protruding part, and lid advances/discharging opening plays recessed part, and, if adopted, the water filling nozzle just can puncture lid and advance/the last seal of discharging opening, and need not corresponding bobbin.

O-ring seals with an outside keeps the water filling part 575,585 of extraction assembly to be isolated from the leaching chamber that is formed by barrel, can carry out the leaching process of identical many times or different beverages continuously, and need not to clean by any way or safeguard this extraction assembly.

Also have, the outside O-ring seals 566 of water filling nozzle is easy to change and safeguard, and needn't split out the inner body of water filling nozzle itself.

More than the explanation of carrying out shows that the present invention has reached the target and the purpose that propose.Very clear, those skilled in the art that can make various modification to barrel of the present invention and extraction assembly within the scope of the invention.So, the diagram of each preferred embodiment that provides with the form of giving an example in the specification and explanation should not limit the scope of claims, but claims should be contained whole features of the proprietary novelty among the present invention, comprise whole features that those skilled in the art that are considered as being equal to.

The application requires european patent application 04007293.6,04007294.4,04007295.1 and 04007296.9 is enjoyed priority, and their content is quoted it by this paper.

Claims

1. barrel that is applicable to the flash distillation coffee machine, it is used for leaching beverage with the water of certain pressure from the granule materials that wherein comprises, and this barrel comprises:

One main body, it comprises a cup part and a lid part, described cup partly comprises at the bottom of one glass, a sidewall and with a described cup opposite rim of a cup edge, the end, described lid partly is fixedly connected to the rim of a cup edge of described cup part and limits an internal capacity of described barrel

The internal capacity of described barrel is equipped with the granule materials that wraps in filter element the inside, and described filter element can stop granule materials and allow permeable flowing material to pass through from it,

Described cover section branch comprises that a lid advances/discharging opening, and it limits one first path for the fluid permeable material, and the cup end of described cup part comprises that a cup advances/discharging opening, and it limits an alternate path for the fluid permeable material,

It is characterized in that, described internal capacity comprises that being installed in described cup advances/valving on the discharging opening, this valving can flexibly be opened under the pressure effect at described fluid permeable material in leaching beverage process, thereby allowing described fluid permeable material to flow through described cup in described beverage extraction process advances/discharging opening, described valving comprises a sealing plate or the disk made from elastomeric material, described sealing plate or disk comprise slit that at least one penetrates but that close usually, be used for when described beverage extraction process has finished, the internal capacity of described barrel being isolated from external environment and being used for the fluid residue is remained in the described internal capacity

Wherein, when described barrel contained coffee in powder form, described valving allowed described fluid permeable material to flow through described slit when it is in open mode, in order to the formation and the stability thereof of the foam of enhancing from the beverage that described barrel leaches out,

Wherein, described cup advances/discharging opening comprise be formed on its inner surface or be installed in fluid on its inner surface grid that flows, be used for the straight fluid stream that dispersion train is crossed described cup part.

2. barrel as claimed in claim 1, it is characterized in that, described sealing plate or disk are to make with the material that is selected from rubber, resilient plastics, described sealing plate or disk comprise one penetrate but the slit of closing usually be used for when described beverage extraction process has finished, the internal capacity of described barrel being isolated from external environment and being used for the fluid residue is remained in the described internal capacity.

3. barrel as claimed in claim 2 is characterized in that, described sealing plate or disk comprise that all surperficial vallums are used to allow fluid from flowing through and being used to support described granule materials and described filter element therebetween.

4. barrel as claimed in claim 2 is characterized in that, described valving comprises a pad that is installed on the described sealing plate, is used to support described granule materials and described filter element and is used to allow the described slit of direction of flow.

5. barrel as claimed in claim 1, it is characterized in that, the described cup end, comprise many ribs, these rib direct forming are given prominence to thereon and to the internal capacity of described barrel, thereby can support described filter element and described granule materials and limit many meticulous tank circuits, these tank circuits make described filter element and described granule materials advance with described cup/the discharging opening fluid is communicated with.

6. barrel as claimed in claim 5 is characterized in that, described rib be arc and be arranged to many concentric circular arcs, thereby directly limit many radially and the circumferential tank circuits at described cup at the end.

7. barrel as claimed in claim 6 is characterized in that the width of the described tank circuit is about 1mm.