WO1994005191A9 - Agencement et dispositif de filtration utile pour preparer des boissons a base de cafe et/ou de the - Google Patents

Agencement et dispositif de filtration utile pour preparer des boissons a base de cafe et/ou de the

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Publication number
WO1994005191A9
WO1994005191A9 PCT/EP1993/002338 EP9302338W WO9405191A9 WO 1994005191 A9 WO1994005191 A9 WO 1994005191A9 EP 9302338 W EP9302338 W EP 9302338W WO 9405191 A9 WO9405191 A9 WO 9405191A9
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WO
WIPO (PCT)
Prior art keywords
filter
capsule
filter device
openings
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1993/002338
Other languages
German (de)
English (en)
Other versions
WO1994005191A1 (fr
Filing date
Publication date
Priority claimed from DE19934302899 external-priority patent/DE4302899A1/de
Priority claimed from DE19934304691 external-priority patent/DE4304691A1/de
Priority claimed from DE19934317902 external-priority patent/DE4317902A1/de
Application filed filed Critical
Priority to AU55408/94A priority Critical patent/AU5540894A/en
Priority to EP93919216A priority patent/EP0660683A1/fr
Publication of WO1994005191A1 publication Critical patent/WO1994005191A1/fr
Publication of WO1994005191A9 publication Critical patent/WO1994005191A9/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Definitions

  • the present invention relates to a filter device for preparing coffee and / or tea beverages, which has a space for receiving filter material and immersed in operation in a liquid in a container which circulates through the filter device. Furthermore, the invention relates to a device equipped with the filter device for preparing coffee and / or tea beverages.
  • a coffee machine in which a filter device with a disc-like, the coffee powder receiving filter capsule immersed in a container filled with liquid to close to the provided with a heater container bottom.
  • the filter capsule has filter openings at its lower and upper filter surfaces.
  • a coffee machine in which a coffee powder containing cylindrical filter body with bottom and head-side filter screens is placed on the inner bottom of a liquid-filled container. While the filter body also rests during operation, radially directed nozzles rotate in a chamber above the head-side filter screen, which press the liquid vertically through the filter device.
  • the drive of the nozzles is effected by an electric motor whose housing is connected to the filter device via a hollow shaft in which a drive shaft for the nozzles rotates.
  • This device requires due to the axial flow through the filter material to obtain a recoverable in a reasonable time extraction result either a large diameter of the filter body to reduce the caused by the filter material flow resistance or a very high fluid pressure, which causes a high speed for the nozzles.
  • the device is relatively complicated in structure and requires a lot of effort to change the filter material and for cleaning.
  • a coffee machine is known from US-PS 44 01 014, in which also a dormant in operation, cylindrical filter body is used, which has filter openings on the lateral surface. In this device rotates in Filtergut a motor-driven propeller, which causes a constant turbulence of the coffee powder in the filter body, without causing a stable flow exchange with the liquid surrounding the filter body. This leads to relatively long extraction times and to disturbing sentence formation in the finished brew.
  • This device is relatively complicated in construction and requires a lot of effort to change the filter material and for cleaning.
  • the coffee powder is in a centrifugal filter.
  • the coffee machines according to the publications DE 30 29 546 AI and DE 25 24 610 AI the coffee powder is initially distributed as possible evenly on the filter wall at high filter speeds of 4000 to 8000 revolutions per minute, whereupon from a water reservoir hot water is introduced into the interior of the filter, which penetrates the coffee powder and is thrown as a sud against a surrounding collecting wall, from which the brew drains into a separate collection vessel.
  • the invention has for its object to provide a specific for preparing coffee and / or tea beverages filter device of the type mentioned, which makes do with a simple and compact design with short extraction times.
  • the invention has for its object to provide a device equipped with this filter device for preparing coffee and / or tea beverages.
  • the filter material volume a comparatively small thickness and forms a large flow area.
  • the filter material flowed through radially by the liquid in the filter device according to the invention has a low flow resistance, whereby even at low rotational speeds of the filter device a strong circulation or a high volume flow (volume per unit time) of liquid through the filter material and thereby already within a short extraction time a high degree of extraction is achieved.
  • the filter device according to the invention can be made compact and lightweight with the inclusion of the liquid container, which further provides the advantage of cost-effective production.
  • the filter device according to the invention can be used in the form of a "coffee bar" in connection with any liquid containers present at the user, for example coffee cups, coffee pots, thermo pots, etc.
  • the filter device according to the invention is easy to handle and clean.
  • the beverage prepared with the filter device according to the invention is highly aromatic.
  • the coffee beverage thus prepared also has a relatively high pH, which is why it is well tolerated by sensitive consumers.
  • Fig. 1 shows a first embodiment of the invention
  • FIG. 1A shows the filter device of the device according to FIG. 1 with filter cover in perspective, exploded and partially cutaway view, FIG.
  • FIG. 1B shows a second embodiment of the filter device of the device according to FIG. 1 with filter cover in perspective, exploded and partially cutaway illustration, FIG.
  • FIG. 1C shows the device according to FIG. 1 with a third embodiment of the filter device
  • FIG. 1 shows the filter device according to FIG. 1C in a perspective, exploded and partially cutaway illustration, FIG.
  • FIG. 1E shows an embodiment of a device in which the filter device according to the invention is used
  • FIG. 1C shows a further embodiment of the filter device according to the invention
  • FIG. IH shows a further embodiment of the filter device according to the invention
  • FIG. 1C shows a further embodiment of the filter device according to the invention
  • FIG. IH shows a further embodiment of the filter device according to the invention
  • FIG. 1C shows a further embodiment of the filter device according to the invention
  • FIG. IH shows a further embodiment of the filter device according to the invention
  • FIG. 11 shows a further embodiment of a filter device and device according to the invention
  • Fig. 1J shows an embodiment of the u. a. in the device according to Fig. II usable filter device
  • FIG. 1K shows a further embodiment of the filter device according to the invention
  • FIG. 2 shows a further embodiment of the filter device and device according to the invention
  • Fig. 2A shows a further embodiment of the filter device and device according to the invention.
  • FIG. 2B shows a further embodiment of the filter device and device according to the invention
  • FIG. 2C shows a further embodiment of the filter device and device according to the invention
  • Fig. 3 shows a further embodiment of the filter device and device according to the invention.
  • Fig. 4 shows a further embodiment of the filter device and device according to the invention.
  • the filter device comprises in particular the following elements: A connected to a drive device or connectable filter shaft 1-15, 2-15, 2-15 ', 3-63, 4-63 and / or a coupling device for transmitting the rotational movement of a filter or drive shaft, a filter cover 1-17, 2-17, 3-71, 4-71, a filter body 1-19, 2-19, 3-19, 4-19, a filter bottom 1-27, 2-27, 3-27, 4-27, at least one inflow zone 1-29, 1-29 ', 2-29, 2-29', 3-35, 4-35 and a filter area 1-23 , 2-23, 3-23, 4-23 with filter holes 1-25, 2-25, 3-25, 4-25.
  • a device in connection with the filter device, it comprises in particular a liquid container 1-1, 2-1, 3-1, 4-1 for receiving liquid 1-21, 2-21, 3-21, 4-21 which is converted into bins 1-22, 2-22, 3-22, 4-22 during operation of the liquid immersing filter device.
  • Fig. 1 and la show a first embodiment of the invention.
  • a kettle liquid container 1-1 with a preferably plate-shaped electric heater 1-3, a handle 1-5, a foundry 1-7 and a container lid 1-9.
  • this liquid container 1-1 protrudes from above the filter device. It has a drive unit forming, connected via connecting elements 1-011 with the container lid 1-9 electric motor 1-11 with a drive shaft 1-13 and a filter shaft 1-15, the fixed or detachably connected to the drive shaft 1-13 of the drive unit and through the Be fiscalerdecke1 1-9 is guided.
  • a filter cover 1-17 is attached by means of a screw or other connection means.
  • the filter cover 1-17 has a closed lid surface, apart from explained further below vent openings 1-34.
  • the filter shaft 1-15 can also be reduced to a short connection element, as shown in Fig.
  • IG or be replaced by a terminal contained in the filter cover 1-17 connecting element in which the drive shaft 1-13 of the drive unit firmly or removably engages.
  • the connection between drive shaft 1-13 and filter shaft 1-15 is located to protect against splashes of liquid and water vapor, as shown in Fig. 1, preferably outside of the container 1-1. This area can also be ventilated like a fan. Additional protection against splashes of liquid and water vapor is achieved by a preferably disc-shaped approach 1-015, which is attached to the filter shaft 1-15 and disposed in the vicinity of the container lid 1-9.
  • the filter device comprises a drum-shaped filter body 1-19 detachably connected to the filter cover 1-17 and preferably designed as a cylindrical hollow body.
  • To connect filter cover and filter body is preferably a screw thread 1-18 or a bayonet (not shown) on the filter body 1-19 and a corresponding thread 1-36 or bayonet (not shown) on the filter cover 1-17.
  • the peripheral filter surface 1-23 formed by the lateral surface of the hollow cylindrical filter body 1-19 has small filter openings 1-25 which are close in height over the area of the filter surface 1-23 from the lower edge to an upper edge the screw thread 1-18 or bayonet closure of the filter body are largely evenly distributed.
  • the filter body 1-19 has an end face forming filter bottom 1-27 with a central, preferably approximately circular inflow zone 1-29.
  • the annular region of the filter bottom surrounding the inflow zone is closed to its edge, apart from a few additional openings 1-28, which are explained in more detail below.
  • inflow zone 1-29 of the filter bottom 1-27 is also designed as a filter feed pipe 1-31 fixed or detachably inserted by means of a screw and arranged largely coaxially in the filter body 1-19. It has a lower feed pipe opening 1-35 and along the pipe wall small filter openings 1-33, which in their arrangement from below approximately to the level of the upper edge of the filter openings 1-25 provided with the area of the filter surface 1-23 of the filter body 1-19 rich. The totality of the filter openings 1-25 of the filter body 1-19 and the entirety of the filter openings 1-33 of the supply pipe 1-31 are thus opposite. In its upper area, the inflow pipe 1-31 is closed by an externally dome-like chamfered Zuflußrohrdecke1 1-37.
  • the annular space formed between the supply pipe 1-31 and the filter surface 1-23 of the filter body 1-19 serves to receive the filter material 1-39 to be extracted, for example roasted coffee ground to a powder.
  • the filter body 1-19 formed on the filter cover 1-17 filled with filter material filter capsule 1-100 emerges after placing the container lid 1-9 on the fully or at least partially filled with water liquid container ll completely or at least partially in the water. 1 -21 or in the Sud 1-22.
  • the arrangement of the inflow zone 1-29 in the region of the filter bottom 1-27 is advantageously the inflow of water 1-21 or Sud 1-22 in the supply pipe 1-31 and thus upon rotation of the filter capsule the formation of a revolving, the Filtergut 1-39 predominantly radially passing through circulation flow corresponding to the flow lines 1-44 and 1-45 shown schematically in Fig. 1 ensured, even if the filter capsule 1-100 is not completely immersed in the water 1-21 or in the broth 1-22 ,
  • the inflow zone 1-29 and the inflow pipe 1-31 may instead be attached to the filter bottom 1-27 in a corresponding manner on the filter cover 1-17 (not shown), but this is a complete immersion of the filter capsule 1-100 including the filter cover 1-17 in the water 1-21 or in the Sud 1-22 presupposes.
  • the circulation of the water then runs in the vertical direction opposite to the illustration in FIG. 1, while the horizontal flow direction through the filter material 1-39 remains unchanged.
  • the operation of the embodiment of Figs. 1 and 1A is as follows.
  • water 1-21 is first filled into the container 1-1.
  • 1-19 coffee powder or tea leaves are filled as filter material 1-39 in the filter body previously dissolved by the filter cover 1-17, which is facilitated by the outer slope of the Zuflußrohrdeckels 1-37.
  • the filter body 1-19 is attached to the filter cover 1-17, whereby the filter material 1-39 in the annular receiving space in the cross-section, in the direction perpendicular to the axis of rotation 1-41 of the filter surface 1-23 and the shell portion of the feed tube 1-31 and is determined in the direction of the axis of rotation 1-41 of two faces formed by the filter bottom 1-27 and the filter cover 1-17 capsule is enclosed on all sides.
  • the container lid 1-9 is placed on the liquid container 1-1, so that the filter capsule 1-100 is immersed in the water 1-21 in the container 1-1 and also fills the inside of the filter capsule 1-100 with water passing through the filter openings 1-25 and 1-33 penetrates into the interior of the Filterk ⁇ rpers 1-19. Also located in the filter capsule 1-100 Filtergut 1-39 is then in water.
  • the heater 1-3 is turned on and preferably at the same time so that the motor 1-11 energized, so that the filter capsule 1-100 already in the heating phase of the water 1-21 in this rotates about the vertical axis 1-41.
  • the filter capsule 1-100 With the onset of the rotational movement of the filter capsule 1-100 together with its feed pipe 1-31, a vigorous, in Fig. 1 schematically illustrated by the streamlines 1-44 and 1-45 schematically, the water 1-21 revolves
  • Circulation flow which flows through the filter material 1-39 from the inside to the outside in a predominantly radial direction. At this time, water flows from below through the inflow zone 1-29 into the inflow pipe 1-31 and rises upward therein. Since the feed pipe 1-31 is closed upwardly by the feed pipe cover 1-37, the rising water flows through the filter holes 1-33 of the feed pipe into the inside of the filter capsule 1-100 with filter bottom 1-27 and filter cover 1-17 Capsule 1-100.
  • the rotating filter capsule thus acts as a circulation pump.
  • the filter material is 1-39 in the filter body 1-19 flows through substantially radially and increasingly extracted, wherein the circulation of the water 1-21 within a short time in the coffee or tea beverage desired Sud 1-22 transformed.
  • the rotating filter capsule ensures rapid mixing and rapid concentration equalization of introduced into the water 1-21 or in the Sud 1-22 substances.
  • the filter surface 1-23 is formed with its filter openings 1-25 by a seamless piece of pipe or a sleeve or by a rounded, joined together with its abutting ends along a seam band
  • the filter surface 1-23 of the filter body 1-19 is divided into a plurality of mutually separate filter segments 1-20.
  • the filter body 1-19 has a support body 1-24 with at the lower and upper edge respectively circulating bands between which extend vertically extending webs 1-26. This results in window-like cutouts or openings, in each of which filter segments 1-20 are inserted.
  • the insertion of the filter segments 1-20 in this window-like cutouts of the preferably made of plastic carrier body 1-24 is advantageously carried out by edge-side injection molding or injection, including the injection molding of the Suk ⁇ rpers 1-24 the filter segments 1-20 are inserted as injection-molded inserts in the injection mold ,
  • the carrier body 1-24 can form a one-piece plastic injection molded part with the filter bottom 1-27.
  • This construction has the advantage that the filter segments 1-20 can first be prepared and processed in the form of a flat band or foil or the like prior to insertion into the carrier body 1-24 and can be provided with the filter openings in a still planar state. Only then do cutting and rounding of the individual Filter elements according to the shape and size of the window-like openings of the filter support 1-24.
  • the rounding of the filter segments 1-20 may be omitted if the filter support 1-24 is formed instead of having a circular cross-section with a polygonal cross-section, the webs 1-26 are arranged at the corners of the polygon and as ribs with an angle profile the filter support 1-24 a give great mechanical strength (not shown).
  • a filter openings 1-25 exhibiting cylindrical rounded wire or foil screen can be brought as an insert in the injection mold, which is then stabilized by the webs 1-26 the filter body 1-19 and divided into filter segments 1-20.
  • the feed pipe 1-31 is reduced with its filter openings 1-33 to the inflow zone 1-29 'with inflow openings 1-33', in which case the inflow zone 1-29 ', for example in FIG the level of the filter bottom 1-27 lies.
  • the inflow zone 1-29 'with its filter openings 1-33' can also be formed by a separately manufactured plate or film 1-31 ', which is inserted into a correspondingly large central opening in the filter bottom 1-27 and be prepared in a similar manner the filter segments 1-20 of the embodiment of FIG. IB.
  • the filter surface 1-23 of the filter body 1-19 corresponds to this third embodiment of the filter unit of the embodiment of FIG. 1A or the embodiment of FIG. IB.
  • one of the embodiments described last without feed pipe 1-31 forms the filter cover 1-17 contrary to the illustration in Fig. IC a - apart from the degassing openings 1-34 - closed end face corresponding to the embodiment of the filter cover according to Fig. 1A or IB.
  • a centric inflow zone 1-29 with openings 1-33, possibly in the form of a plate or foil similar to the plate or foil 1-31 '. in the filter bottom 1-27.
  • openings 1-33 possibly in the form of a plate or foil similar to the plate or foil 1-31 '. in the filter bottom 1-27.
  • the filter material 1-39 initially distributed uniformly in the filter body 1-19 compresses towards the inside of the filter surface 1-23 and forms a hollow cylinder, wherein in the filter body 1-19 along the axis of rotation 1-41 extending flow zone 1-21 'of water 1-21 and Sud 1-22 forms, which is rapidly free of filter material.
  • FIG. IC and ID prove particularly at slightly higher speed of the filter capsule.
  • the filter openings 1-33 in the supply pipe 1-31 of the embodiments of FIGS. 1A and 1B and the filter openings 1-33 'and 1-33 "in the inflow zones 1-29' and 1-29" of the embodiment of FIG. IC and ID are approximately equal in shape and size to the filter holes 1-25 of the filter body 1-19.
  • additional filter openings 1-28 can be provided in it in the embodiments according to FIGS. 1A and 1B near the inflow zone 1-29, through which water 1-21 or Sud 1-1 22 flows into the filter material in this area.
  • Their dimensions preferably correspond to those of the filter openings 1-25 and 1-33.
  • the filter body 1-19 according to the embodiments of FIGS. 1A, 1B, IC and ID can be modified in such a way that it does not take over the function of filtering the fluid flowing through the filter material itself, but in strip-like or cage-like training preferably strattyformiges Receives filter paper, the is introduced by the user of the device before the respective beverage preparation in the interior of the filter body and the filter surface 1-23 inside completely or partially lined annular.
  • the arrangement of the small filter openings 1-25 on the filter surface 1-23 can be omitted.
  • the filter surface in this case forms larger passage openings for the liquid penetrating the strip-shaped filter paper.
  • this solution also has the advantage of a simpler production due to the strip shape and a much lower use of material to form the filter paper strips.
  • the filter strip can also be supplemented to a cylindrical or cup shape which leaves open the region of the inflow opening 1-29 or the inflow openings 1-29 'in the filter bottom 1-27 or has its own inflow openings.
  • cup-shaped paper filters with a closed bottom it is expedient to provide for the resting on the bottom surface of the filter basket filter paper paper quality with greater liquid permeability than for the voltage applied to the lateral surface of the filter basket filter paper. If a prefabricated pot-shaped paper filter provided with bottom and casing part, then in this case, a higher liquid permeability can be provided for the bottom part as for the casing part.
  • Liquid permeability can be provided as for the shell part. Also this part can have additional degassing openings - corresponding to the degassing openings 1-34 located in the filter cover 1-17, as well as the bottom part of the coffee bag openings 1-33 'corresponding openings. Furthermore, the cover part and / or bottom part of the coffee bag by solid, perforated parts, for. B. plastic, to be replaced, which may be interconnected by webs. For aroma sealing, the coffee bags are advantageously packed or sealed in a film during storage until they are used as intended, preferably under vacuum or inert gas.
  • filter paper mesh-like material for. B. as wire mesh or foil screen, both preferably made of food grade metal such. As stainless steel or plastic.
  • wire mesh or foil screen both preferably made of food grade metal such.
  • stainless steel or plastic As stainless steel or plastic.
  • the webs 1-26 comes in this case preferably an approximately round cross-section question.
  • any turbulence in the water 1-21 or Sud 1-22 can be reliably suppressed by at least one boom 1-47, with respect to easy cleaning ability of the inner wall of the container 1-1 preferably on the lid 1-9 is attached and from there to below in the filter body 1-19 surrounding the interior of the container 1-1 protrudes.
  • the at least one boom can advantageously also be located in the region of the inner wall of the container 1-1.
  • the filter capsule 1-100 with the filter cover 1-17 can be provided with a connection device for releasably coaxial attachment of the filter capsule to a coupling device of the filter shaft 1-15 or the drive shaft 1-13 (not shown).
  • FIG. 1E shows a device for using the filter device according to the invention according to FIG. 1F, IG or IH.
  • This device has a liquid container 1-1 as a large container with, for example, a bottom-side electric heater 1-3 and a removal tap 1-72.
  • Fixedly or detachably connected to a detachable container lid 1-9 is an electric motor 1-11 constituting a drive unit having a drive shaft 1-13 which constitutes an axis of rotation 1-41 eccentric to a center axis 1-43 of the container 1-1 ,
  • the container preferably has an oval, rectangular or otherwise deviating from the circular cross section to reduce disturbing turbulence in the liquid 1-21 or Sud 1-22.
  • one or more jibs or inserts 1-47 are used, which preferably have a perforation 1-47 'and may be secured to the container lid 1-9.
  • a filter shaft 1-15 Releasably connected to the drive shaft 1-13 of the drive unit is a filter shaft 1-15, to which a filter device according to the invention formed as a cylindrical hollow body, drum-shaped filter body 1-19, a filter bottom 1-27 and a filter cover 1-17 in more detail below Way can be attached to transmit an emanating from the drive unit rotational movement on the filter elements comprising the aforementioned elements capsule 1-100 when used in the filled with water or other liquid container of FIG. 1E.
  • the design, use and function of the device according to FIG. 1E also correspond in principle to the construction, the use and the function of the device according to FIG.
  • FIG. IF, IG and IH will be described in more detail below, in particular as far as they differ from the embodiments of FIG. 1, 1A, 1B or IC and ID or go beyond this.
  • the filter shaft 1-15 is formed in the upper portion as a hollow shaft with which the filter shaft with the entire filter unit is attached to the drive shaft 1-13 and can be deducted from it.
  • the drive shaft z. B. have a spring in the leg engages the filter shaft with a kind of groove.
  • the drive shaft may further comprise a preferably collar-like stop 1-30.
  • the filter cover 1-17 is preferably fixedly connected to the filter body 1-19 after introduction of the filter material 1-39, similar to the embodiment of FIG. IF.
  • the section through the filter material 1-39 is highlighted by puncturing.
  • the filter body 1-19 forms a basket or cage for receiving strip-like filter paper 1-40, which bears against the inner surfaces of the filter body 1-19.
  • To form the basket or cage form except longitudinal webs 1-26 'also crossbars 1-26 "available.
  • the filter shaft 1-15 is also hollow in the embodiment of FIG. IG and can be plugged onto the drive shaft 1-13, to which the drive shaft in turn has a collar-like stop 1-13 ', which in Fig IF is denoted by 1-30.
  • a radially projecting pin of the drive shaft and an angular slot of the Filter shaft together form a bayonet closure 1-13 ", with which the filter unit can be secured to the drive shaft.,
  • the locking can also be done, for example by locking devices.
  • the filter cover 1-17 is preferably firmly connected to the filter body 1-19 after introduction of the filter material 1-39, similar to the embodiments according to FIGS. IF and IG.
  • the filter shaft 1-15 is integrally formed with the filter cover 1-17 and forms a pin which is inserted into an end-side recess of the drive shaft, not shown.
  • similar locking elements can be provided as in the embodiment according to FIG.
  • B. of a material such as ferrite or alloys with rare earths (eg Neodymium, Samarium) or Alnico - have, by the adhesion of the filter cover 1-17 and filter body 1-19 is coupled to the drive shaft or held axially wherein one of the permanent magnets can be replaced by a body of soft magnetic material.
  • the permanent magnets may also have a soft magnetic flux return.
  • the torque is transmitted through slots and engaging teeth or pins which are preferably provided on parts of a magnetic capsule connected to drive shaft 1-13 and filter shaft 1-15, respectively.
  • the magnetic capsule can also perform the function of approach 1-015 of Take over embodiment of FIG. 1. In particular, the arrangement and mode of operation of such magnets in the Fig. IK described below are illustrated and explained.
  • the embodiments described above are also suitable for the preparation of coffee and tea beverages in larger quantities, for example in hotels and restaurants and larger offices, in a particularly simple manner and with little time, without the need for specially trained personnel available.
  • the device according to FIG. 1E can also be operated with a filter device according to FIGS. 1A to 1D.
  • the filter unit according to FIG. IF can be used with devices according to FIG. 1 or according to FIGS. 2 to 4.
  • filter units according to FIG. IG and IH can be used with devices of FIG.
  • FIG. II is in its basic structure of the embodiment of FIG. IC Similarly, and comprising a formed as a kettle liquid container 1-1 with a handle 1-5, a foundry 1-7 and a plate-shaped, for example, electric heater 1-3 'or bowl-shaped electric heater 1-3 "in a base or housing. 1 On the base or the housing 1-87, the liquid container 1-1 is fixed or detachably mounted or inserted.
  • the base or the housing 1-87 can also other electrical components such as power supply, circuits, switches and / or plug in.
  • the heating device according to FIG. 11 can also be designed in the manner of an immersion heater 1-3 "'and with a connecting piece 1-89 with the container 1-1, for example by means of a clamping device or by means of a transition piece 1-91 with a detachable container lid 1-9 be fixed or detachably connected .It may also be provided a high-frequency or microwave heating.
  • a drive unit Fixed or detachably connected to the detachable container lid 1-9 is a drive unit forming electric motor 1-11 having a drive shaft 1-13.
  • the electric motor 1-11 and the heater 1-3 'or 1-3 "or 1-3"' are equipped with electrical connection cables, which are not shown in Fig. II.
  • a filter capsule is preferably detachably attached to the drive shaft 1-13.
  • the filter unit according to FIGS. II and 1J comprises a filter cover 1-17, which is connected to a filter shaft 1-15, which is firmly attached to the drive shaft 1-13 or detachably attachable.
  • Fixed or detachably connected to the filter cover 1-17 is a preferably designed as a cylindrical hollow body, drum-shaped filter body 1-19.
  • To connect filter cover and filter body is preferably a screw thread 1-18 or a bayonet (not shown) on the filter body 1-19 and a corresponding thread or bayonet (not shown) on the filter cover 1-17.
  • FIG. 1J shows, similar to the embodiment according to FIG. ID, the peripheral filter surface 1-23 formed by the lateral surface of the hollow cylindrical filter body 1-19 has small filter openings 1-25 which have an analog arrangement as in the embodiment according to FIG ID.
  • the filter body 1-19 has an end face forming filter bottom 1-27, similar to the embodiment of FIG ID has a plurality of inflow openings 1-33 ', which are distributed over substantially the entire surface of the filter bottom 1-27, thus forming the inflow zone 1-29 '.
  • a narrow outer annular portion of the surface of the filter bottom 1-27 of supply openings 1-33 'kept free (not shown in Fig. 1J), although this does not appear to be mandatory.
  • the inner edge of this ring area may be circular, oval or polygonal. To increase the mechanical stability, there may also be webs or other areas without inflow openings between areas with inflow openings 1-33 '.
  • strut-like conical approach 1-81 a bearing axis 1-83 are provided, which dips when inserting the device into the container 1-1 from above into a bearing shell 1-85, which can be provided at the bottom of the container 1-1 ,
  • the heater 1-3 it is expedient to arrange the heater 1-3 'on the lower surface of the bottom of the container 1-1, which may consist of stainless steel, especially in this case as well as in other embodiments.
  • the filter cover 1-17 of the filter capsule 1-100 is fastened to outwardly or internally resilient rods 1-200, wherein engage filter cover 1-17 behind thickening 1-203 at end of rods 1-200.
  • the rods 1-200 are bent in their upper part by grasping by hand inward and then pulled off the filter cover.
  • the filter cover 1-17 sealingly engages in a cylindrical, the filter surface 1-23 forming filter film preferably made of food grade stainless - a.
  • the filter film or filter surface 1-23 has filter openings 1-25, which are preferably produced by photoetching.
  • the inflow zone 1-29 ' has a preferably circular filter sheet 1-31' - preferably made of food-grade stainless steel - with inflow openings 1-33 ', which are preferably produced by photoetching.
  • the filter film 1-33 ' together with the lower edge of the cylindrical filter surface 1-23 forming filter film, held by a ring 1-202 in an annular bottom plate 1-201.
  • the bottom plate 1-201 also carries the rods 1-200.
  • the filter cover 1-17 with degassing 1-34 is mi mi the filter shaft 1-15 connected.
  • the filter shaft 1-15 has at its opposite end a permanent magnet 1-204 in a capsule 1-205, which has frontal and / or radially directed teeth 1-206, preferably in an arrangement as a sprocket.
  • a permanent magnet 1-207th On the drive shaft 1-13 of the drive unit 1-11 is located in a capsule 1-208, a permanent magnet 1-207th
  • the capsule 1-208 has slit-like depressions 1-209.
  • the permanent magnets 1-204 and 1-207 are inserted into their capsules - z. B.
  • the filter device in the liquid container 2-1 is not supported by components of a device, but attached to a kind of stirring rod and held by a handle of this stirring rod by the user during operation in the liquid container 2-1.
  • the filter body 2-19 is connected via its filter cover 2-17 and the filter shaft 2-15 with the drive shaft 2-13 of the electric motor 2-11, which is located in a hand-held device 2-49.
  • the drive shaft 2-13 is not the drive shaft of the motor 2-11 itself, but the drive shaft of a gear unit 2-12, which is mechanically connected downstream of the electric motor 2-11.
  • the electric motor 2-11 is operated with one or more electric batteries or accumulators located in a handle 2-51 in a battery compartment under a battery compartment cover 2-53.
  • the engine 2-11 is with Help of a switch 2-55 temporarily energized.
  • a mechanical spring drive 2-16 or other mechanical drive such.
  • B. a hand crank or a drill-like device occur.
  • the filter capsule 2-100 with the filter body 2-19 and the filter cover 2-17 are substantially identical to the filter capsule formed from corresponding components of the embodiment of FIG. 1 and FIG. 1A.
  • the filter body 2-19 has the filter surface 2-23 with the filter openings 2-25 and the supply pipe 2-31 with the filter openings 2-33 and the supply pipe opening 2-35 and the supply pipe cover 2-37.
  • the filter body 2-19 advantageously has a ring 2-57 with (not shown) lateral openings, through which water 2-21 and Sud 2-22 in the Zuflußrohrö réelle 2-35 and the Inlet pipe 2-31 flows if the filter body 2-19 is accidentally placed on the bottom 2-59 of the container 2-1 by the user of the device holding the handset 2-49.
  • the container 2-1 is in the case of the embodiment of Fig. 2 is preferably a cup, e.g. with a handle 2-5, or a glass jar.
  • the filter shaft 2-15 In order to allow the attachment of filter bodies 2-19 different size on the handset, the filter shaft 2-15, similar to handmix devices known per se, preferably releasably connected to the drive shaft 2-13.
  • hot water 2-21 is introduced into the container 2-1 - e.g. one cup - filled, the filter capsule 2-100 immersed in the water 2-21 and the motor 2-11 energized via the switch 2-55 for a time at will, so that the filter capsule 2-100 during this time in the water 2- 21 rotated about the rotation axis 2-41.
  • the flow illustrated schematically in FIG. 2 by flow lines 2-44 and 2-45 the water circulates circulating flow 2-21, which predominantly passes through the filter material 2-39 radially.
  • the filter capsule 2-100 works as a circulation pump, whereby the filter material 2-39 is increasingly extracted and the water 2-21 turns into the desired as coffee or tea beverage Sud 2-22.
  • the cover has 2-17 vent openings 2-34. Furthermore, as shown in FIG. 2A, the filter shaft 2-15 'formed as a hollow shaft and attached to the filter cover so that the air contained in the filter capsule 2-100 and possibly other therein contained gases in the hollow shaft 2-15 'and by radial or axial (not shown) openings 2-6' and 2-6 "this hollow shaft can escape to the outside.
  • a propeller 2-8 can also be arranged on the bottom side on the filter capsule 2-100, which is connected to the filter body 2-19 and rotates together with the filter capsule.
  • the blades of the propeller are set so that the flow of liquid from below through the inlet openings 2-33 'of the filter bottom 2-27 through into the interior of the filter capsule 2-100 is still enhanced.
  • Such a propeller can also be provided in the other embodiments of the filter device.
  • FIG. 2A shows an embodiment of the device according to the invention, in which the filter device in the container 2-1 'is preferably arranged centrally.
  • baffles which run on the inner surface of the container 2-1' in the axial direction or inclined thereto.
  • Fig. 2A shows two such longitudinal webs 2-2, but also several such longitudinal webs over the circumference of the container 2-1 'preferably be evenly distributed.
  • the longitudinal webs 2-2 may be formed, for example, by corresponding indentations of the container wall, which is especially useful when the container is made of glass, ceramic, metal or plastic and the chicanes forming indentations can be generated during the production of the container.
  • the longitudinal webs 2-2 dispenses with the provision of a boom 1-47 shown in FIG. 1 on the lid 1-9 of the container.
  • the longitudinal webs can also be connected to a common, z. B. annular plate, be attached and with this in the liquid container 2-1 'can be used or be removed from it (not shown).
  • a collar-shaped projection 2-87 can be provided on the handle part 2-51 'on the underside thereof, which is inserted into the container 2-1 when the filter capsule 2-100 is attached to the handle part via the filter shaft 2-15''comes to rest through a correspondingly wide central opening 2-4 of the container lid 2-9' on a collar-shaped seat 2-89 of the container lid 2-9 '. It is thereby achieved that the handset inserted into the container 2-1 'is mounted on the container cover 1 in the correct operating position and does not have to be held manually during operation.
  • the lid opening 2-4 can be closed by an additional lid (not shown). But it can also be the container lid 2-9 'replaced as a whole by a decorative lid.
  • a filter capsule 2-100 of the filter device surrounding sleeve serve 2-93 with peripheral openings 2-91, which at the same time the filter capsule 2-100 and the inner wall of the liquid container 2-1 ' protects against damage.
  • the openings 2-91 may, for example, have a diameter of about 5 mm to about 8 mm.
  • the sleeve 2-93 further comprises a guide 2-97 for the filter shaft 2-15 'and preferably formed as a larger recesses vent openings 2-95 and is connected via connecting elements 2-99 with the device 2-49' fixed or detachably connected.
  • the connecting elements can also be formed as a tube and / or be telescopically slidable (not shown).
  • the filter device Since the sleeve 2-93 does not participate in the rotational movement of the filter capsule, the circulation movement in the water or broth is only greatly weakened in the area outside the sleeve transferred 2-93 and there is no longer disturbing noticeable as turbulence. Spilling over the water or Suds over the upper edge of the liquid container 2-1 'is thereby reliably prevented even at high speeds of the filter capsule 2-100.
  • the filter device as a rod-shaped hand-held device in any shape container such. As coffee cups, thermos and the like, use, with a cover-like splash guard or on the cover 2-9 'can be omitted.
  • the handset can be connected to the bottom edge of the sleeve 2-93 on the bottom of the Place liquid container 2-1 ', without significantly hindering the circulation of diesstechniksströ ung.
  • the lower edge of the sleeve z. B. arched recesses on (not shown).
  • the sleeve 2-93 may have baffle-like longitudinal ridges on its outer surface (not shown).
  • the connecting elements 2-99 can also be omitted in a simplified version of the filter device, so that the sleeve 2-93 is loosely seated on the upper region of the filter cover 2-17.
  • the sleeve 2-93 takes this - at a lower speed - part of the rotation of the filter capsule 2-100 and dampens the turbulence outside the sleeve in this case. In both cases, the sleeve 2-93 is not firmly connected to the filter capsule 2-100.
  • the filter device Even if at the end of a beverage preparation process, the filter device is withdrawn while still rotating filter capsule from the sud formed in the liquid container, the sleeve acts 2-93 as a splash guard against the operator and the work environment, since the tangentially thrown off of the filter capsule 2-100 sud at the Inner wall of the sleeve 2-93 accumulates and dripped off from there. As a result, brewing losses can be avoided. The remaining filter cake in the filter capsule filter material can be thrown dry and thus easily disposed of.
  • a collar-shaped seat 2-87, 2-89 can be provided for the filter device during operation.
  • FIG. 2C shows an exemplary embodiment with a commercially available coffee, tea or thermo pot as a liquid container 2-1 '.
  • the motor 2-11 ' is mounted on a support plate 2-101.
  • pin-like holding elements 2-103 are radially displaceable and, after displacement within the can opening 2-4 ', are fixed to the carrier plate 2-101 with screws 2-101 as far as the stop at the edge of the can opening, and thus on an individual can permanently adapted.
  • the filter device formed in this case as a coffee stick in any can after insertion until the stop of the support plate 2-101 at the edge of the can opening 2-4 'and laterally fixed seat.
  • the pins 2-103 can also be resilient.
  • the support plate 2-101 and the pins 2-103 of the filter device form a can adapter.
  • FIG. 2B and 2C corresponds to the structure of FIG. 2A.
  • additional vent openings 2-6 "'are attached.
  • FIGS. 2A and 2B show in a further embodiment of the filter device according to the invention, a device 2-49 'with a possibly also designed as a knob handle part 2-51', the drive motor 2-11 'and an on / off switch 2-55 or timer and possibly a power supply, circuits and / or other electrical components.
  • the handle portion 2-51 ' may be electrically connected via a cable 2-54 (which may also include the on / off switch 2-55' or timer) preferably to a low voltage power supply (with or without switching elements) so as to engage the handle portion
  • a low voltage power supply with or without switching elements
  • the container 2-1 ' is formed in this case without a heater, so that in the case of heat extraction, the extraction liquid (water, milk, etc.) is filled in a heated state in the container
  • the extraction liquid water, milk, etc.
  • multi-level design of the on / off switch 2-55 'or z. B. by means of a control of the timer a jerky start or stop of the engine and filter capsule and a corresponding recoil movement of the container 2-1, 2-1 'avoided and instead achieved a time-step or continuous start or standstill without recoil movement.
  • Such a design is particularly suitable in the embodiment according to FIG. 2C.
  • the filter body 3-19 forms the filter capsule 3-100 with a lid 3-71 formed as a holding-down device.
  • This contains as a conveying element or circulating pump, a propeller 3-61, which is arranged in the supply pipe 3-31 in the region of the inflow zone 3-29 or feed pipe opening 3-35.
  • the propeller axis 3-63 has a sealing cylinder or ring 3-69, preferably made of a plastic material, on which seals the interior 3-70 of the supply pipe 3-31 and a connected to the motor unit 3-10 protective tube 3-73 and at the same time to guide the propeller axis 3-63 in the feed pipe 3-31 is used.
  • the sealing cylinder or sealing ring 3-69 is connected to the drive shaft 3-13 of the electric motor 3-11.
  • the electric motor 3-11 is via a support arm 3-65 and a preferably designed as a torsionally secure connector compound 3-67 detachably connected to the container lid 3-9.
  • the container lid 3-9 closes the container 3-1 for the water 3-21 and for the brew 3-22 and is particularly removable for cleaning the container.
  • the container 3-1 is equipped with an electric heater 3-3. Through an opening 3-75 in the protective tube 3-73, any water 3-21 or 3-22 exiting from the interior 3-70 flows back into the container 3-1.
  • the propeller shaft 3-63 is advantageously releasably connected to the motor 3-11 and the drive shaft 3-13.
  • various propellers can be easily used, e.g. Propeller with different angles of attack of the propeller blades for optimization at different operating speeds.
  • the motor unit 3-10 together with protective tube 3-73 and propeller 3-61 are removed from the cover 3-9 while loosening the connection 3-67 upwards.
  • the protective tube 3-73 serves to protect the propeller 3-61 from damage during later replacement of the motor unit 3-10.
  • the filter capsule 3-100 is taken out at the top, used filter material 3-39 removed and fresh filter material 3-39 filled.
  • the advantageous side openings 3-77 for the passage of water 3-21 and Sud 3-22 has.
  • the filter capsule 3-100 is replaced with fresh filter material 3-39 and attached hold-down 3-71 reinserted in the lid 3-9, with a detachable connection between the filter capsule 3-100 and lid 3-9 is made. Then, the heater 3-3 and the motor 3-11 are turned on.
  • the propeller 3-61 feeds liquid into the supply pipe 3-31, so that a rapid circulating flow circulating through water 3-21 rapidly through recesses 3-79 of the protective pipe 3-73, the filter openings 3-33 of the Feed pipe 3-31, the filter material 3-39 and the filter openings 3-25 of the filter surface 3-23 therethrough.
  • the filter surface 3-23 forms a substantially coaxial to the rotational or central axis 3-41 lateral surface. Due to the circulation of the liquid, the filtered material 3-39 is increasingly extracted and the water 3-21 turns into the desired as coffee or tea beverage brew.
  • the circulation flow passes through the filter material in a predominantly radial direction and is illustrated schematically in FIG. 3 by streamlines 3-44 and 3-45.
  • the finished drink can be taken through a drain 3-72 with tap.
  • the propeller 3-61 can be at very high speed - eg about 8,000 to 12,000 revolutions / minute - without disturbing side effects, such as unbalance movements of the entire device or turbulence in the water 3-21 or Sud 3-22, operated. As a result, even very large quantities of strong drinks can be produced in a very short time.
  • the described device according to the embodiment of FIG. 3 is particularly suitable for professional use, for example in restaurants.
  • FIG. 4 shows a further embodiment in which, compared to the embodiment according to FIG. 3, the propeller 3-61 has been replaced by a screw conveyor 4-81.
  • This is characterized by high robustness, so that it can be dispensed with a protective tube according to the protective tube 3-73 of the embodiment of FIG. 3.
  • the sealing cylinder or ring 4-69 abuts directly on the inner wall of the inflow pipe 4-31. Otherwise, the description of the embodiment according to FIG. 3 applies analogously to the embodiment according to FIG. 4.
  • the auger 4-81 can also be replaced by a screw.
  • a diagonal pump can also be provided inside the filter capsule 3-100, 4-100.
  • the drive unit may be formed as an electric motor with battery or mains power supply or as a spring drive.
  • the circulating pump can also be provided outside the filter device and arranged in a recirculation circuit, which feeds the circulated liquid preferably via a line into the inflow zone or into the inflow pipe of the filter device (not shown).
  • filter body 1-19 filter segments 1-20 used or injected they may be one or more pieces and be designed as a wire screen.
  • the filter shaft 1-15, 2-15, 2-15 ', 3-63, 4-63 instead of the filter cover also be attached to the filter bottom of the filter capsule, in which case the filter capsule after placing the filter cover and Rotation is coupled by 180 ° to the above with respect to the liquid container drive shaft 1-13, 2-13, 3-13, 4-13.
  • the rotation by 180 ° is eliminated when the drive shaft is arranged in the bottom region of the container and, for example, protrudes liquid-tightly through the bottom. It can also be provided a bottom-side magnetic coupling (not shown).
  • the filter capsule 1-100, 2-100, 3-100, 4-100 of the filter device need not necessarily be cylindrical, but may for example also have a conical or bell-shaped or otherwise double-curved lateral surfaces (including spherical and ellipsoidal shape) have ( not shown) .
  • the filter body 1-19, 2-19, 3-19, 4-19 and other parts of the filter device consist for example of food grade aluminum, eg. B. with oxide or paint coatings, or food grade stainless steel or plastic, z.
  • polycarbonate polyacetals such as polyoxyethylene, polyethylene, polypropylene or fluoropolymers, optionally as a coating.
  • the filter surface 1-23, 2-23, 3-23, 4-23 of the filter body and the filter segments 1-20 are preferably made of metal foils or sheets of food grade metal, eg. As stainless steel or titanium.
  • the filter openings 1-25, 2-25, 3-25, 4-25 can advantageously be produced by punching, drilling, laser beams or electron beams or by etching. It is also possible to produce the filter surface or filter segments with the filter openings electroformed. The use of such manufacturing techniques also makes it possible to form the filter openings with a conically widening outwardly cross-section, whereby a possible clogging of the filter openings is reliably prevented even during prolonged operation.
  • z. B. approximately rectangular or slit-shaped filter openings whose width is advantageously less than about 0.5 mm, while their length up to several millimeters, z. B. 3 mm, may be.
  • Such designed filter openings extend with their longitudinal extent preferably parallel to the axis of rotation.
  • the number of filter openings 1-25, 2-25, 3-25, 4-25 is chosen depending on their diameter and can be about 600 with an opening diameter of preferably 0.2 mm
  • the approximately square filter openings preferably have a side length of about
  • filter bodies 1-19, 2-19, 3-19, 4-19 having an outer diameter of about 24 mm to about 70 mm and a filter area 1-23, 2-23, 3-23 , 4-23 formed with an axial height of about 25 mm to about 60 mm. It proved to be advantageous not to provide the ratio of height to diameter substantially greater than 1.
  • the volume of the produced quantities of drinks ranged from about 70 ml to about 1.5 l.
  • the degassing openings 1-33 ", 2-33", 1-34, 2-34 on the filter cover possibly also the inflow openings 1-33 ', 2-33' in the filter bottom 1-27 and 2-27, greater than (eg, about 0.5 mm to about 0.7 mm in diameter) than the filter openings 1-25, 2-25 (eg, about 0.1 mm, about 0.2 mm or 0.35 mm diameter) on the lateral surface of the filter body 1-19, 2-19.
  • the inflow openings can therefore be approximately twice as large or even larger than the filter openings with regard to their diameter or their inside diameter.
  • the temperature of the liquid during the filling before extraction in the range of about 90 ° C to about 95 ° C.
  • the extraction turns out at lower temperatures while extending the extraction time, eg. B. for about 20 min at 20 ° C (cold extraction) as advantageous.
  • the liquid When using liquid containers with heater, the liquid is preferably held on a thermostatically or by means of heating element positive temperature coefficient (PTC) achieved final temperature of about 90 ° C to about 95 ° C, in which extracted in a preselected by means of time switching device time.
  • PTC heating element positive temperature coefficient
  • the heating device preferably with the reduction of the time average heating power, are used for keeping the finished beverage in the liquid container warm.
  • a switch (not shown) may be provided, the z. B. responds to the removal of the filter unit from the container.
  • Bayonet connections in the filter device can also be provided with push-fit connections.
  • a constant equidirectional rotation of the filter device can also be a rotation in an alternating direction, wherein the cycle times can be adjusted.
  • the filter device and apparatus according to the invention is not only suitable for preparing coffee or tea beverages, but also for the preparation of other beverages that are obtained from the filtration of filter material, eg. B. for the preparation of drinks with cocoa ingredients. It can be used as a liquid instead of water, other intended for beverage preparations liquids, eg. B also milk, to be used.
  • the water obtained from the water or another extraction liquid 1-21, 2-21, 3-21, 4-21 by enrichment with extractants from the filter material 1-39, 2-39, 3-39, 4- 39 drink also referred to as "Sud" when it comes to the preparation of the drink is not a boiling process.
  • the filter capsule By circulating liquid through the filter capsule is achieved that in the water 1-21, 2-21, 3-21, 4-21 or Sud 1-22, 2-22, 3-22, 4-22 outside the Filter device possibly located particles such as coffee powder particles through the feed openings 1-33, 1-33 ', 2-33, 2-33', 3-33, 4-33 or sucked through the vent openings and in the filter unit as Filtriergut on or in Coffee powder or other filter material accumulated and thus removed from the water or broth.
  • the filter device simultaneously acts as a cleaning filter for the water or the broth. This effect - as well as a self-filter effect of the filter cake forming during the extraction into a filter cake - ensures an extremely low-calorie coffee beverage.
  • the coffee beverages obtained with the filter device described above in various embodiments have pH values which are up to a difference of about 0.5 over the pH values of coffee beverages obtained using conventional coffee machines using the same coffee.
  • the aforementioned difference in pH of about 0.5 is of great importance in beverages such as coffee with bitter taste component which does not mix with an acidic taste component to give a total taste, with decreasing pH - ie increasing acidity - can be increasingly perceived as unpleasant.
  • the achieved with the filter device according to the invention increase of the pH by about 0.5 is also of great importance in terms of salubriousness, especially for stomach-sensitive people who respond to increasing acidity in coffee usually with complaints.
  • the coffee powder can be used as Filtergut for the production of coffee drinks with a special flavor flavor additives such.
  • B. cinnamon and vanilla are added and extracted together with the coffee powder.
  • Viscous or liquid flavoring components such as cocoa concentrate, condensed milk or Alcohols may be added to the liquid, preferably the broth, shortly before the production of the beverage, which are then rapidly and completely mixed by the rotational movement of the filter capsule with the coffee components of the brew.
  • liquid container without heating device as a thermal vessel, for. B. as a double-walled glass vessel or with a surrounding container, for. B. plastic, wherein between the container wall and the liquid container an air cushion, for. B. also using foamed plastics such as polystyrene or polyurethane.
  • a handle is preferably located on the surrounding container.

Abstract

Un agencement de filtration utile pour préparer des boissons à base de café ou de thé dans un récipient (2-1) de réception d'un liquide est submergé dans le liquide et comprend une capsule de filtration (2-100) qui contient les matières à filtrer (2-39); le liquide dans le récipient circule à travers la capsule de filtration. Cette dernière (2-100) avec les matières à filtrer qu'elle contient peut être entraînée en rotation et/ou comprendre un tube d'amenée (2-31) pourvu d'orifices d'amenée (2-33) par lesquels le liquide est amené aux matières à filtrer dans un sens surtout radial. Un dispositif de préparation de boissons à base de café ou de thé comprend un récipient de liquide (2-1') et un agencement de filtration du type décrit.
PCT/EP1993/002338 1992-09-01 1993-08-30 Agencement et dispositif de filtration utile pour preparer des boissons a base de cafe et/ou de the Ceased WO1994005191A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU55408/94A AU5540894A (en) 1992-09-01 1993-08-30 Filtering arrangement and device for preparing coffee and/or tea beverages
EP93919216A EP0660683A1 (fr) 1992-09-01 1993-08-30 Agencement et dispositif de filtration utile pour preparer des boissons a base de cafe et/ou de the

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE4229130 1992-09-01
DEP4229130.5 1992-09-01
DE19934302899 DE4302899A1 (de) 1992-09-01 1993-02-02 Vorrichtung zum Zubereiten von Getränken, vorzugsweise Kaffee- oder Teegetränken und vorzugsweise für diese Vorrichtung geeignete Filtereinheit
DEP4302899.3 1993-02-02
DE19934304691 DE4304691A1 (de) 1993-02-02 1993-02-16 Filtereinheit, insbesondere für eine Vorrichtung zum Zubereiten von Getränken, vorzugsweise Kaffee- oder Teegetränken und Verfahren zur Herstellung dieser Filtereinheit
DEP4304691.6 1993-02-16
DEP4317902.9 1993-05-28
DE19934317902 DE4317902A1 (de) 1993-02-02 1993-05-28 Vorrichtung zum Zubereiten von Getränken, vorzugsweise Kaffee- oder Teegetränken, und vorzugsweise für diese Vorrichtung geeignete Filtereinheit

Publications (2)

Publication Number Publication Date
WO1994005191A1 WO1994005191A1 (fr) 1994-03-17
WO1994005191A9 true WO1994005191A9 (fr) 1994-05-26

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EP (1) EP0660683A1 (fr)
AU (1) AU5540894A (fr)
WO (1) WO1994005191A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515366A (en) * 1994-11-17 1996-05-07 International Business Machines Corporation Method and apparatus for direct communication in a TDMA radio communication system
DE102011009429A1 (de) 2011-01-26 2012-07-26 Ravinder Issar Heißgetränkezubereiter
CN103860022B (zh) * 2012-12-18 2016-12-28 主力智业（深圳）电器实业有限公司 全自动泡茶器
DE102014222999A1 (de) * 2014-11-11 2016-05-12 Wmf Ag Flüssigkeitsdurchlässiger Kolben eines Kaffeebereiters
US11000145B2 (en) * 2016-05-20 2021-05-11 Louis Ballezzi Device for brewing beverages in reduced time by means of physical motion

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE660397A (fr) *
US1572861A (en) * 1925-07-27 1926-02-09 Larrey Elisa Rotary percolator
GB421950A (en) * 1934-06-23 1935-01-02 Otto Thieme An improved beverage maker
DE693951C (de) * 1938-10-19 1940-07-22 Franz Reinholz Vorrichtung zur Herstellung von Getraenken, z. B. Kaffee
US2355094A (en) * 1940-09-21 1944-08-08 Emmett B Moore Apparatus for making beverages
DE1454235A1 (de) * 1964-12-03 1968-11-21 Guenther Zschernitz Geraet zur Herstellung von Kaffeegetraenk
US3595623A (en) * 1967-05-09 1971-07-27 Inst Divi Thomae Foundation Apparatus for extracting flavoring elements from vegetable matter
NL6813628A (fr) * 1967-09-25 1969-03-27

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