EP1921953A1 - Machine a cafe et a expressos - Google Patents

Machine a cafe et a expressos

Info

Publication number
EP1921953A1
EP1921953A1 EP06762958A EP06762958A EP1921953A1 EP 1921953 A1 EP1921953 A1 EP 1921953A1 EP 06762958 A EP06762958 A EP 06762958A EP 06762958 A EP06762958 A EP 06762958A EP 1921953 A1 EP1921953 A1 EP 1921953A1
Authority
EP
European Patent Office
Prior art keywords
espresso
water
brewing
coffee
machine
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.)
Withdrawn
Application number
EP06762958A
Other languages
German (de)
English (en)
Inventor
Susanne Gottner
Nikolaus Neacsu
Fredrik Bergegard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Hausgeraete GmbH
Original Assignee
AEG Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP1921953A1 publication Critical patent/EP1921953A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3609—Loose coffee being employed
    • A47J31/3614—Means to perform transfer from a loading position to an infusing position

Definitions

  • the invention relates to an espresso machine with a pressure-tight closable brewing chamber with an inlet for hot water, with a filling possibility for filling fresh espresso flour and with an outlet for freshly brewed espresso.
  • an espresso machine with a displaceable in a brewing cylinder brewing piston is known.
  • the brewing piston is in frictional connection with a motorized actuator, via a rod which is mounted in a vertically displaceable sleeve with a pipe section.
  • the pipe section is inter alia via a tension spring with the pin of a cam in conjunction, which is driven by a geared motor.
  • the tension spring is arranged and dimensioned such that the coffee powder filled into the brewing chamber of the brewing cylinder is compressed substantially constantly and independently of the quantity of powder by the geared motor.
  • a brewing water inlet which communicates with the brewing chamber in brühwasser technicallyder connection, via a filter having an annular opening which cooperates by a sliding closure piece to release a passage.
  • the brewing piston should at the pressure of the inflowing into the brewing cylinder or in the brewing chamber Brewing water are held in his coffee flour compressing Stel ⁇ ment.
  • an off ⁇ moving screen is arranged, which can be raised for ejection of the ground coffee cake formed after the brewing process.
  • the compaction of the ground coffee is provided in such an espresso machine to achieve a good, the quality of espresso mitberus crema, since the compressed ground coffee for the brewing water forms a throttle section and thus in the brewing cylinder, a brewing pressure is generated, the essential oils from the ground coffee pressing, which form the crema.
  • a certain pressure is built up in the brewing chamber before the finished espresso can flow out of the brewing chamber.
  • the relatively high brewing pressure of the brewing water flowing into the brewing chamber acts on the moistened ground coffee before the actual leaching of the ground coffee.
  • an occlusive overpressure or cream valve which delimits the brewing chamber downstream is known which only opens the brewing chamber to the outflow of the finished espresso when a setpoint opening pressure is reached.
  • the brewing piston is lowered into the brewing position with a brewing sieve in the brewing chamber until the brewing piston which has hit the coffee grounds has compacted the ground coffee.
  • This locking elements are effective, which cooperate with a Absenkhebel and thereby fix the position of the brewing piston before and during the introduction of the brewing water through the holes of the reciprocating piston in the Brühkam- mer.
  • the locking elements comprise a plurality of catch traps to allow a compression of different amounts of coffee.
  • a reciprocating piston Arranged above the bottom of the brewing chamber is a reciprocating piston, which is perforated by the brewing water sump embedded in the bottom into the brewing chamber for the brewing water to pass through.
  • the reciprocating piston is slidably mounted and by the rotational movement of the upper part movable up and down. This allows the reciprocating piston to be raised after brewing the espresso when turning the upper part in a different angular position to the upper edge of the brewing chamber. From there, the coffee muff cake remaining after the brewing process can be pushed off laterally with a clearing element. Beforehand, it is also achieved by the close enclosure of the ground coffee between the perforated lifting piston and the brewing sieve that only a small amount of residual water remains in the ground coffee cake after the brewing process. With the well-known espresso machine only a single cup of espresso can be made. With other well-known espresso machines can be produced at most two cups of espresso at once.
  • a multiplicity of espresso cup filling quantities can be produced simultaneously or directly one after the other from the same heated and pressurized hot water supply.
  • preferably up to ten large coffee cups can be filled with espresso liquid.
  • a large cup has a content of up to 125 ml.
  • the preparation process i. H. the duration of the brewing process and the pressure of the water used for brewing and its temperature are controlled electronically.
  • set other numbers of coffee cups simultaneously for example, four, six or eight cups.
  • the espresso machine can be expanded at any time to an espresso and coffee machine by adding a unit for brewing ground coffee with non-pressurized water.
  • Cappuccino can also be produced by a device for generating superheated steam integrated in the espresso machine.
  • the espresso machine comprises a two-part brewing head with a fixed lower part and a rotatable or displaceable upper part, the upper part comprising at least three filling chambers for filling fresh espresso powder and the filling chambers can be brought successively by rotation in conjunction with the brewing chamber.
  • a closure lever with a piston attached to it and the espresso flour squeezing piston is arranged at each filling chamber.
  • a single piston is stationary in connection with a locking lever mounted in the lower part, by means of which each of the filling chambers can be closed after rotation into a position assigned to the piston.
  • a compression spring for compressing the espresso syrup can be arranged between the closure lever and the piston so that, depending on the amount of espresso powder filled in, it is always compressed sufficiently to ensure an optimal brewing process.
  • the piston is equipped on its underside with a brewing sieve, through which the pressurized espresso liquid is pressed outwards into the outlet.
  • each of the filling chambers can be brought by rotation with an integrated outlet in the lower part of the espresso in connection.
  • a plurality of espresso cups can be made from a single large enough supply of pressurized hot water.
  • an espresso machine can alternatively be designed so that the filling chambers are arranged in a linearly displaceable relative to a stationary lower part upper part. Also in this case can be filled from a single hot water supply, a number of more than two espresso cups.
  • the invention provides an advantageous espresso machine comprising a filter carrier for the espresso flour and a water chamber for pressurized hot water, wherein the volume of the water chamber is selected by adding water corresponding to an operator selected number of cups from a supply of water or water from the water pipe into the water chamber by displacement of a pressure piston is adjustable and the water flows through a filter carrier whose filling volume for the espresso flour corresponds to the number of desired cups.
  • the water is forced through one of the number of cups, each successively filled with renewed Espressomehl filter carrier.
  • the espresso machine comprises a plurality of filter carriers for the espresso flour and a water chamber for pressurized hot water, that the volume of the water chamber by supplying water according to an operator selected and in their intended positions arranged number of brewing devices, in particular of filter carriers, from a water supply or from the water pipe in the water serhunt chamber by displacement of a pressure piston is adjustable and that the water is supplied via leading to the filter support inflow lines.
  • a selector switch is provided on the espresso machine on which the operator sets the overall 'desired number of cups or portions.
  • the invention also relates to a method for operating an espresso machine with at least one or two juxtaposed devices for the simultaneous production of at least two cups of espresso coffee.
  • the method is inventively characterized in that the espresso machine is programmed by means of an electronic control unit by a program such that the production of a total of at least four, six, eight or more cups of espresso coffee is selected by a switch of free choice and then in the Device or in each of the two devices simultaneously one cup of espresso coffee is brewed by introduced from a supply of espresso coffee meal this in the device or in the devices is that hot water is supplied through the compressed Esp ⁇ ressokaffeemehl passed, that the power consumed by the brewing espresso coffee is automatically inside removed in a pulp container and in that this brewing process is repeated until the number of at least four, six, eight or more cups reaches becomes.
  • the water flows in each case according to the selected number under high pressure in the device or in the devices in which the espresso is brewed individually or in parallel. This process is repeated, in which new cups are placed under the spouts for refilling. The presence of cups under the spouts for the espresso coffee is detected by a sensor.
  • the espresso machine is equipped with a pulp container, is automatically removed in the brewing process after the zusa ⁇ unengepresste coffee cake from the respective container in which the brewing has taken place, is removed. Subsequently, the necessary amount for the subsequent brewing process is refilled into the container.
  • This process of removing the used ground coffee cake and replenishing the ground coffee takes place synchronously in the individual or in the two devices on the espresso machine, in particular the filter carriers, so that the required number of, for example, four or more espresso coffee cup portions can be successively brewed.
  • the espresso machine also equipped with a coffee grinder can be, so that the espresso coffee is freshly ground depending on the required number of portions.
  • the brewed espresso coffee is successively filled into a jug which can be placed on the espresso machine under at least one spout for the espresso coffee.
  • the invention also relates to an espresso machine suitable for use in this method, which is characterized by a sensor which allows the dispensing of the brewed espresso coffee from the spout only when the sensor detects the presence of the jug.
  • a sensor which allows the dispensing of the brewed espresso coffee from the spout only when the sensor detects the presence of the jug. This is, for example, an optical or a mechanical sensor. If it is determined that there is no espresso coffee receptacle, the espresso machine interrupts the espresso coffee brewing program.
  • FIG. 1 is a perspective view of a Espes- ressomaschine, with a plurality of
  • Filling chambers is equipped for ground coffee
  • Fig. 2 is a partially sectioned view of the espresso machine according to Fig. 1, wherein a one in Brühposition brought filling chamber associated piston for closing a located below the Ein Schollka ⁇ uner brewing head located above the upper part of the espresso machine,
  • FIG. 3 shows the illustration of FIG. 2, wherein the piston is brought into brewing position and additionally shown in section, and
  • FIG. 4 shows a further espresso machine, which is provided with a plurality of units for simultaneously brewing
  • An espresso machine 1 for brewing espresso coffee from a ground coffee suitable for this purpose has a carousel-shaped upper part 2 which can be rotated relative to a stationary lower part 3.
  • the lower part 3 is in turn mounted on a housing or foot 4.
  • the upper part 2 comprises a plurality of filling chambers 5 accessible from above for filling, of which one is the filling chamber 5 'facing the front side of the housing 4 in FIG
  • Pivoting range of a piston 6 for squeezing the coffee powder is located.
  • the piston 6 is actuated by a locking lever 7, which is mounted via a rotary joint 8 in a stand 9.
  • the piston 6 is formed with a locking means so that it can lock in a working position for brewing the coffee powder with the upper part 3.
  • the upper part 3 is manually rotatable by means of a rotary handle 10 in order to respectively turn the upper part 3 so that one of the filling chambers 5 lies in the position 5 ', so that the ground coffee contained in it can be brewed.
  • all the filling chambers 5 can emit espresso from a common hot water supply by repeatedly successively rotating the upper part 2, which escapes through an outlet 11 mounted in the lower part 3.
  • the upper part 2 has locking elements 12 distributed around its circumference, which engage with a locking receptacle 13 attached to the lower part 3. The rotation of the upper part 2 with respect to the lower part 3 takes place about an axis of rotation 14 (FIGS. 2, 3).
  • a brewing head 15 is present in the lower part 3, via which the piston 6 can be lowered by the adjusting lever 7.
  • the piston 6 relative to the inner wall of the brewing head 15 on a (not shown) seal, for example in the form of an O-ring.
  • 16 hot water is introduced into the brewing head 15 from a mounted in the lower part 3 (not shown) hot water supply via an inflow line.
  • the pressurized water passes through a sieve 17 and receives the flavors and aromas from the ground coffee mash compressed by the piston 6 in the scalding head 15 and then exits the spout 11 through a sieve 6a mounted on the underside of the piston 6 pushed out of the espresso machine 1 when a predetermined overpressure is reached at which a introduced in the outlet line 11 pressure relief valve 18 opens.
  • the piston 6 after release of the locking connection back up out of the Brewing head 15 are pulled out.
  • the remaining in the brewing head 15 cake of leached ground coffee can be pressed by means of a force acting from below on the screen 17 lever 18 up until it protrudes beyond the top contour of the upper part 2, so the cake can be easily removed by a brush or a scraper can.
  • the lever 18 is articulated on the one hand to the lower part 3 or to the housing 4 and connected via a mounted on the underside of the screen 17 rod 19 with this. It is understood that in another embodiment of the invention, the lever 43 can also be actuated by a motor. After the brewing head 15 has been cleaned of the remainders of the brewing process, by rotating the upper part 2 relative to the lower part 3 until the next filling chamber 5 has reached the position 5 ', the next brewing process can be initiated from the same water supply.
  • a top part can also be arranged to be linearly displaceable with respect to a part, with a plurality of filling chambers being arranged next to one another in a similar manner, as shown in FIG. 1 on the basis of the circularly symmetrical construction.
  • only a single filling chamber 5 and a single brewing head 15 are present, with the addition of the supply and discharge of the hot water or the Espresso supplementkeit done in the same manner as shown in Fig. 2 and 3, but can the operator fills the filling chamber 5 with ground coffee in accordance with the desired number of cups, and also places a corresponding number of cups on an optional Switch 20 so that an electronic control determines the appropriate amount of water, which is taken from a water reservoir and must be heated in a connectable via the inflow line 16 with the brewing head pressure vessel, so that a lot of espresso is produced, which corresponds to the predetermined number of cups.
  • a container for example made of stainless steel, glass or plastic is placed on a tray 21 formed by the housing 4.
  • the shelf 21 can also be designed so that it can be swiveled away from the housing 4, as is generally known in coffee machines, so that the container can be swung out and removed together with the shelf 21 after the brewing process has ended, in order to feed the espresso coffee into the individual cups pour.
  • an espresso machine 22 (Fig. 4) comprises an upright casing part 23 which merges into a base 24 at the bottom and an upper part 25 in which three brewing units 26, 27, 28 are provided for simultaneously producing three espresso coffee portions are.
  • the foot 24 is equipped with a drip tray 29 for dripping liquid.
  • the espresso machine 22 is either equipped with a via a flap 30 accessible from above fresh water tank or connected to a water mains.
  • an on / off switch 31 is arranged, with which the espresso machine 22 can be connected to an e-lectric line network.
  • each of the brewing units 26, 27, 28 is equipped with its own on / off switch 32, 33, 34, so that the user can choose according to the desired number of espresso brews. portions determines the number of brewing units 26, 27, 28 to be switched on.
  • a Aufgenesiskontrolltive 35 is present, which goes out when the water to be heated in the corresponding number of brewing units 26, 27, 28 has reached the required temperature.
  • an espresso metering lever 36 is arranged, upon the actuation of which ground coffee ground from a supply can be manually filled into receiving containers of filter carriers 38, 39, 40 via an outlet 37 arranged thereunder. then the filter supports 38, 39, 40 are arranged below each of the brewing units 26, 27, 28 to brew the espresso.
  • a steam regulator 41 the amount of steam flowing from a hot steam pipe 42 can be determined to prepare cappuccino.
  • the amount of cups to be brewed can be determined automatically by means of a switch, in which case the espresso machine 1, 22, which is extended to the coffee machine, heats a corresponding quantity of water and passes through a quantity of coffee powder and a filter, which is also determined by the machine or manually specified by the operator , Also the strength of the coffee, d. H.
  • the amount of coffee powder per volume of water can be set manually, so that the machine then automatically doses water and ground coffee according to the given number of cups.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

Machine à expressos (1) qui comporte une chambre d'échaudage pouvant être fermée de manière étanche à la pression et pourvue d'un orifice d'entrée pour l'eau chaude, un élément de remplissage qui permet l'introduction de café moulu frais et un orifice d'évacuation pour l'expresso fraîchement passé. Ladite machine est caractérisée en ce que la chambre d'échaudage possède un volume qui est suffisant pour la préparation simultanée et / ou immédiatement successive d'au moins trois tasses d'expresso fraîchement passé.
EP06762958A 2005-08-24 2006-08-03 Machine a cafe et a expressos Withdrawn EP1921953A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510039927 DE102005039927A1 (de) 2005-08-24 2005-08-24 Espresso- und Kaffeemaschine
PCT/EP2006/007681 WO2007022860A1 (fr) 2005-08-24 2006-08-03 Machine a cafe et a expressos

Publications (1)

Publication Number Publication Date
EP1921953A1 true EP1921953A1 (fr) 2008-05-21

Family

ID=36933607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762958A Withdrawn EP1921953A1 (fr) 2005-08-24 2006-08-03 Machine a cafe et a expressos

Country Status (3)

Country Link
EP (1) EP1921953A1 (fr)
DE (1) DE102005039927A1 (fr)
WO (1) WO2007022860A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103251317A (zh) * 2012-02-20 2013-08-21 茗享家国际有限公司 多个位置的调整单元
DE102022134466A1 (de) * 2022-12-22 2024-07-25 Eugster / Frismag Ag Hybride Getränkezubereitungsvorrichtung mit entnehmbarem Getränkesubstrathalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH559028A5 (fr) * 1973-03-26 1975-02-28 Olympia Express
IT214297Z2 (it) * 1987-12-22 1990-05-03 Zanussi Grandi Impianti Spa Espresso, in dosi variabili. gruppo infusore automatico per lapreparazione istantanea di bevande calde, in particolare caffe'
CH674703A5 (en) * 1988-03-11 1990-07-13 Salvis Ag Double piston coffee brewing machine - has two rotors swinging pistons into line with filling, brewing and discharge stations
FR2639205B1 (fr) * 1988-11-23 1992-03-27 Coruzzi Jean Pierre Machine a cafe automatique composee d'un plateau mobile circulaire perce d'alveoles dispose entre deux plateaux fixes, le mouvement circulaire assurant les differentes phases de la preparation du cafe avec une etancheite de chaque alveole
FR2804002B1 (fr) * 2000-01-24 2002-07-05 Unic Groupe pour la fabrication de boissons par infusion et machine l'integrant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007022860A1 *

Also Published As

Publication number Publication date
DE102005039927A1 (de) 2007-03-01
WO2007022860A1 (fr) 2007-03-01

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