EP0000685A1 - Automatische Einrichtung zur Zubereitung von Expresskaffeeaufgüssen oder von ähnlichen Getränken - Google Patents

Automatische Einrichtung zur Zubereitung von Expresskaffeeaufgüssen oder von ähnlichen Getränken Download PDF

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Publication number
EP0000685A1
EP0000685A1 EP78430005A EP78430005A EP0000685A1 EP 0000685 A1 EP0000685 A1 EP 0000685A1 EP 78430005 A EP78430005 A EP 78430005A EP 78430005 A EP78430005 A EP 78430005A EP 0000685 A1 EP0000685 A1 EP 0000685A1
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EP
European Patent Office
Prior art keywords
piston
drawer
infusion
coffee
water
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.)
Granted
Application number
EP78430005A
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English (en)
French (fr)
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EP0000685B1 (de
Inventor
Mario Levi
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Individual
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Individual
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Publication of EP0000685A1 publication Critical patent/EP0000685A1/de
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Publication of EP0000685B1 publication Critical patent/EP0000685B1/de
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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
    • A47J31/3619—Means to remove coffee after brewing
    • 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 present invention relates to an operating assembly intended for the instant preparation of coffee infusion doses in fully automatic cycles and particularly of express coffee.
  • the packing pressure is very high, too low: the hot water which is sent to the filter for the infusion of coffee progresses in swirls in the cake, creates favored paths (chimneys) and only soaks a part of the ground coffee cannot completely extract the aromatic elements from the coffee; too strong: the water, meeting a very compact mass, hardly drips through, punctures the cake creating a chimney, infuses only part of the amount of coffee and gives poor coffee; and, in extreme cases, the water not being able to pass through the wafer, the machine stops.
  • the present invention overcomes these problems by means of an automatic compact assembly which comprises a body in which a part moves which can occupy a rest position and a working position.
  • the displacement of this part can be rectilinear alternating or of any other kind in the body of the group.
  • this movable part animated by an alternating rectilinear movement will be called “drawer” this drawer is crossed by a passage which allows the coffee grounds to fall onto a tamping piston in the low position and it also carries, machined on its underside, a frustoconical recess, large base downwards, in which the grinding disc is formed.
  • the infusion is made from bottom to top which allows a better extraction of the coffee aromas, but could also be done conventionally from top to bottom in another embodiment not shown.
  • the marc is ejected by removing the spent coffee grounds from the mold by washing the brewing chamber against the current; but could also be done, in an embodiment not shown so as to evacuate dry, spent coffee grounds pancakes.
  • the drawer playing the role of distributor infusion inlet, brewed coffee outlet, water release evaluation of spent marc; the sealing ranges which are there applied also serve as guidance in translation.
  • Water dosing and coffee grinding devices are also part of the accessories required for fully automatic operation of the group.
  • the jack controlled by two solenoid valves and the drawer itself serving as a hydraulic distributor makes it possible to simplify the hydraulic circuit and the electrical diagram; moreover, this design eliminates the use of solenoid valves on the hot water circuit, a source of scaling and breakdowns typical of this kind of machine.
  • the main advantage of the present invention consists in a rational realization of the various organs, without complex mechanism, which reduces the risk of incidents, moreover no trace of spent coffee grounds remains in the brewing chamber, nor on the filter, nor on the tamping piston, excluding any changes in taste and unpleasant odors.
  • Fig.2 is a figure similar to fig.l but in the working position.
  • the group consists of the body 1 in which is arranged a cylinder which receives the hollow piston 3; inside this piston 3 and coaxially to it, a cylinder is machined where the piston 4 slides.
  • the funnel 5 Parallel to the axis of the piston 4 and to the left in figs. 1 and 2; is located the funnel 5 which receives the spent marc of cage to direct it towards the evacuation, the emptying.
  • the cover 6 closes the top of the body and provides a housing in which the drawer 7 slides; the drawer 7 carries a bore 8 which in the rest position fig.1 is coaxial with the piston 4.
  • a recess 9 of frustoconical shape, large base down a filter 10 is fixed to a certain distance from the bottom of this recess 9 so as to form a chamber 11; in the working position this recess is coaxial with the piston 4.
  • the drawer 7 receives its translational movement by the ve. known type double-acting hydraulic rinse 12 connected to the drawer 7 by the rod 13 and the axis 14.
  • the piston 4 is fixed on the rod 15 which carries the piston 16 at its lower end.
  • the piston 16 slides in the cylinder 17 arranged in the lower part of the shutter 18 closing the cylinder 2, the shutter 18 is fixed to the body 1 by the screws 19 fig. 6, it also maintains the spacer 20 in position.
  • the valve 21 is housed in the chamber 20a of the spacer 20; inside this valve 21 slides the rod 15 of the piston 4; by means of the spring 22, the valve 21 presses in a sealed manner on the flat seal 23.
  • Fig.3 is a view del.bowel the cover 6 removed, drawer 7 in the rest position, with cut-outs amounting the provision of the various distributors provided for the passage of hot water from a brew, outlet of the brewed coffee and d water from the spent coffee grounds.
  • Fig. 4 is identical to fig. 3, but the drawer is in the working position.
  • Fig. 5 is a schematic figure indicating the different locations of the A.B.C.D. the pressure relief valve E and the non-return valve 27.
  • Fig. 6 is a broken diametrical section of FIG. 1 showing the arrangement of the non-return valve 27 and of the decompression valve E and the fixing of the shutter 18.
  • the water of the boiler f being at the ideal temperature: by an electrical contact of known type, a dose of ground coffee delivered by a system known per se is dropped inside the hollow piston 3 through the passages 26 cover 6 and 8 of drawer 7; the same electrical contact has energized the solenoid valve which delivers a quantity of water electronically dosed to a metering glass by a known system. This quantity obtained the solenoid valve d is cut, the pump a is energized as well as the 3-way solenoid valve c.
  • the pressurized water delivered by the pump, drawn from the verrecbseur e reaches the jack 12 at 12 a and through the non-return valve g to the temperature exchanger f.
  • the jack 12 At the end of travel stop, the jack 12 has pushed the slide 7 into the working position; the differential section duct hh then connects distributor A of the exchanger f with the distributor C fig.4.
  • the pressurized water from the distributor C descends into the conduit i fig 5 which brings it into the annular groove i 'fig.5 and 6 of the non-return valve 27, through the conduit i "to the annular groove j fig.6 and by the conduits j 'fig.6 from the spacer 20 to the housing 20a of the valve 21 held in a sealed manner on the seal 23 by the spring 22.
  • the bottom of the hollow piston. 3 communicates through the holes 29 with the inside of the cylinder of the hollow piston 3.
  • the hollow piston 3 comes to bear in a sealed manner by the seal 24 around the recess 9 fig.2, come to be placed in the working position coaxially with the hollow piston 3; and, by the communications 29 pushes the piston 4; the latter going up causes the rod 15 the piston 16 which is integral with it, in its movement the piston 16 drives out the water contained in the cylinder 17 by the conduits M in the circular groove N and the sleeve 30 towards the solenoid valve c busy; switched off in the direction of the arrow cc and the pump a.
  • the pump continues to operate, the water under pressure arrives at the cylinder 12 at 12 b and pushes it to the left, to bring the drawer 7 to the rest position fig.4; the water contained in the jack is sucked up by the pump through the solenoid valve C passing without voltage in the direction of the arrow cc fig.7; the pump also delivers through the nipple 30 fig.6 in the annular barge N and the conduits M in the cylinder 17 fig.6; but the presence of the non-return valve 27 fig.6 opposing the passage of the water contained in the chamber 35 fig.4 formed in the hollow piston 3 under the piston 4; the piston 4 is therefore held in the high position fig.2, the piston 16 sliding in the cylinder 17 and secured by the rod 15 of the piston 16 can not descend.
  • the tap E gives the option of evacuating via the pipe S, when it is acted upon, in the event of a grinding dosage error the water contained in the chamber 33 fig. 2 authorizing the return of the drawer 7 to the rest position and starting a new cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)
EP19780430005 1977-07-18 1978-07-12 Automatische Einrichtung zur Zubereitung von Expresskaffeeaufgüssen oder von ähnlichen Getränken Expired EP0000685B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7722992 1977-07-18
FR7722992A FR2397815A1 (fr) 1977-07-18 1977-07-18 Ensemble operatoire entierement automatique pour l'infusion de doses de cafes express ou autres boissons similaires

Publications (2)

Publication Number Publication Date
EP0000685A1 true EP0000685A1 (de) 1979-02-07
EP0000685B1 EP0000685B1 (de) 1982-09-15

Family

ID=9193838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780430005 Expired EP0000685B1 (de) 1977-07-18 1978-07-12 Automatische Einrichtung zur Zubereitung von Expresskaffeeaufgüssen oder von ähnlichen Getränken

Country Status (3)

Country Link
EP (1) EP0000685B1 (de)
DE (1) DE2862027D1 (de)
FR (1) FR2397815A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015379A1 (de) * 1979-02-12 1980-09-17 EASTMAN KODAK COMPANY (a New Jersey corporation) Regeneration von Rhodium-Hydroformylierungskatalysatoren
EP0237475A1 (de) * 1986-03-08 1987-09-16 Cafina AG Kolben-Zylinder-Aggregat für eine Kaffeemaschine und Verfahren zu ihrem Betrieb
EP0379651A1 (de) * 1988-12-23 1990-08-01 HGZ Maschinenbau AG Kaffeemaschinenautomat
EP1523913A2 (de) * 2003-10-07 2005-04-20 Lothar Steigerwald Verfahren zum Zubereiten sowie Bereitstellen von flüssigen Lebensmitteln, insbesondere Kaffee, Tee, Suppe od. dgl. in einem Fahrzeug, insbesondere PKW
CZ301066B6 (cs) * 2000-05-09 2009-10-29 Societe Des Produits Nestle S. A. Zarízení pro extrakci substance pro prípravu nápoje

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074333A1 (de) * 1981-08-25 1983-03-16 M. Schaerer A.G. Hydraulischer Antrieb für den Arbeitskolben einer Kaffeemaschine
WO2007027206A2 (en) 2005-04-11 2007-03-08 Coffee Equipment Company Machine for brewing a beverage such as coffee and related method
EP1940268B1 (de) 2005-04-11 2011-11-09 Starbucks Corporation Maschine zum aufbrühen eines getränks wie kaffee und verwandtes verfahren

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR539887A (fr) * 1920-09-04 1922-07-01 Machine automatique pour la préparation rapide du café
FR550958A (fr) * 1921-05-11 1923-03-24 Anonima La Victoria Arduino So Appareil automatique pour la préparation du café
DE608395C (de) * 1930-12-05 1935-01-23 Enrico Pistoni Vorrichtung zur Zubereitung von Kaffeeaufguss o. dgl.
FR1145439A (fr) * 1955-03-23 1957-10-25 Gaggia Brevetti Machine destinée à produire automatiquement des infusions de café
FR1373832A (fr) * 1963-08-22 1964-10-02 Organizzazione Novi S R L Machine automatique pour la préparation de café express
FR1391610A (fr) * 1964-05-05 1965-03-05 Paliz A G Machine à café
US3369478A (en) * 1966-04-22 1968-02-20 Vendo Co Single cup, dry waste coffee brewing and dispensing mechanism
FR2042844A5 (de) * 1969-04-05 1971-02-12 Rossi Gino
FR2119113A5 (de) * 1970-12-21 1972-08-04 Armaboldi Cesare
FR2267073A1 (de) * 1974-04-11 1975-11-07 Imd

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR539887A (fr) * 1920-09-04 1922-07-01 Machine automatique pour la préparation rapide du café
FR550958A (fr) * 1921-05-11 1923-03-24 Anonima La Victoria Arduino So Appareil automatique pour la préparation du café
DE608395C (de) * 1930-12-05 1935-01-23 Enrico Pistoni Vorrichtung zur Zubereitung von Kaffeeaufguss o. dgl.
FR1145439A (fr) * 1955-03-23 1957-10-25 Gaggia Brevetti Machine destinée à produire automatiquement des infusions de café
FR1373832A (fr) * 1963-08-22 1964-10-02 Organizzazione Novi S R L Machine automatique pour la préparation de café express
FR1391610A (fr) * 1964-05-05 1965-03-05 Paliz A G Machine à café
US3369478A (en) * 1966-04-22 1968-02-20 Vendo Co Single cup, dry waste coffee brewing and dispensing mechanism
FR2042844A5 (de) * 1969-04-05 1971-02-12 Rossi Gino
FR2119113A5 (de) * 1970-12-21 1972-08-04 Armaboldi Cesare
FR2267073A1 (de) * 1974-04-11 1975-11-07 Imd

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015379A1 (de) * 1979-02-12 1980-09-17 EASTMAN KODAK COMPANY (a New Jersey corporation) Regeneration von Rhodium-Hydroformylierungskatalysatoren
EP0237475A1 (de) * 1986-03-08 1987-09-16 Cafina AG Kolben-Zylinder-Aggregat für eine Kaffeemaschine und Verfahren zu ihrem Betrieb
EP0379651A1 (de) * 1988-12-23 1990-08-01 HGZ Maschinenbau AG Kaffeemaschinenautomat
CZ301066B6 (cs) * 2000-05-09 2009-10-29 Societe Des Produits Nestle S. A. Zarízení pro extrakci substance pro prípravu nápoje
EP1523913A2 (de) * 2003-10-07 2005-04-20 Lothar Steigerwald Verfahren zum Zubereiten sowie Bereitstellen von flüssigen Lebensmitteln, insbesondere Kaffee, Tee, Suppe od. dgl. in einem Fahrzeug, insbesondere PKW
EP1523913A3 (de) * 2003-10-07 2005-10-05 Lothar Steigerwald Verfahren zum Zubereiten sowie Bereitstellen von flüssigen Lebensmitteln, insbesondere Kaffee, Tee, Suppe od. dgl. in einem Fahrzeug, insbesondere PKW

Also Published As

Publication number Publication date
EP0000685B1 (de) 1982-09-15
DE2862027D1 (en) 1982-11-04
FR2397815B1 (de) 1980-07-11
FR2397815A1 (fr) 1979-02-16

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