EP0077371A1 - Compact type machine for automatic preparation of so-called espresso coffee from grain coffee - Google Patents

Compact type machine for automatic preparation of so-called espresso coffee from grain coffee

Info

Publication number
EP0077371A1
EP0077371A1 EP82901419A EP82901419A EP0077371A1 EP 0077371 A1 EP0077371 A1 EP 0077371A1 EP 82901419 A EP82901419 A EP 82901419A EP 82901419 A EP82901419 A EP 82901419A EP 0077371 A1 EP0077371 A1 EP 0077371A1
Authority
EP
European Patent Office
Prior art keywords
coffee
coffee machine
machine according
leaching
chamber
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Withdrawn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
EP82901419A
Other languages
German (de)
French (fr)
Inventor
Albert Wendler
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.)
RENEKA
Original Assignee
RENEKA
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 RENEKA filed Critical RENEKA
Publication of EP0077371A1 publication Critical patent/EP0077371A1/en
Withdrawn legal-status Critical Current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
    • A47J31/3619—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 invention relates to a compact type machine for the automatic preparation of coffee doses from coffee beans.
  • One of the objectives of the invention is to propose a machine for the preparation of coffee with fully automatic operation, compact, reliable and economical, at the same time having great ease of use.
  • This machine which perfectly meets the needs of professional users by its technique, can be offered for sale at a price significantly lower than machines of the same capacity.
  • the invention remedies the main defects of existing machines and offers quite interesting qualities.
  • the coffee machine according to the invention is remarkable in that the path of the ground coffee, from its exit from the mill in to the ejection of the grounds, is carried out in a circuit entirely closed to the interior of a monobloc group fulfilling the metering, intake, heating, leaching and final marc removal functions, re I ied to a control member for its fully automatic operation.
  • the ground coffee in its first phase of journey remains perfectly protected from any traces of moisture which could humidify it and make it coI Iant.
  • the desired quantity results from a control of the mill in operating time.
  • Figure 1 is a schematic perspective view showing the unitary group of the compact coffee machine according to the invention.
  • Figure 2 is a schematic view of detai l perspecti ⁇ ve showing the end of the group, drawer at the end of travel.
  • Figure 3 is the general diagram of the group and its peripheral organs.
  • Figure 4 is a schematic longitudinal section of the one-piece group of the compact coffee machine according to the invention.
  • Figure 5 is a detail view of the part circled in Figure 4-
  • the various mechanical components are assembled, idarized soil or in close contact with the central group 1 of one-piece structure.
  • a compacting cylinder 11 arranged in the upper part, followed by an inlet chamber 12 with lateral inlet 13 communicating via a conduit 14 with the outlet of the mold in 2 for the direct injection of coffee into the intake chamber.
  • the group also consists of a distribution corridor 15 along which a distribution drawer 16 with receiving chamber 17 moves back and forth between a filling and ejection position and a leaching position.
  • the main new feature of this drawer concerns its extension 18 of length equal to or close to its stroke so as to occupy and even, if necessary, to exceed the lateral end of the movement corridor when the drawer is in the extreme opposite position , i.e. in the leaching position.
  • the central automatic group 1 continues down below the filling position through an ejection orifice 19 of the grounds, an ejection hatch 20 with counterweight, a receiving funnel 21 and an ejection conduit 22 communicating with the grounds container (not shown).
  • the drawer is mechanically connected to the rod of the drawer cylinder 23 for its movement between the two extreme filling and ejection positions, on the one hand, and leaching, on the other hand.
  • the extension 18 of the drawer, the direct lateral injection into the intake chamber make it possible to make the path of the ground coffee in a fully closed volume in order to avoid dispersions (leaks) and deposits on the internal organs.
  • the interior volume of the group is therefore closed on all sides.
  • the orifices and communications are closed by appropriate closings: piston of the compaction cylinder, flap of the ejection hatch, extension of the spool.
  • the group presents on both sides of the leaching chamber a water injection module
  • modules by virtue of their composition, ensure total tightness, thus avoiding the use of the sealing cylinders of the hot water injection head and of the coffee discharge head.
  • the lower module consists of a fixed covering part 26 having a passage 27 for the water supply. This part is secured to the lower plate of the distribution corridor 15. It has a cylindrical cavity 28 of diameter greater than that of the leaching chamber. This cavity forms a receiving volume for a sealing part 29 with a central passage 30 and a diffusion volume 31 of opening greater than that of the leaching chamber protected by a gri I le 32.
  • the sealing part 29 is housed in close contact in the cavity 28.
  • An O-ring 33 ensures the lateral tightness.
  • a beautiful levrate washer 34 is mounted between the bottom of the cavity 28 and the upper face of the sealing part 29-
  • the covering part 35 comprises a recessed upper peripheral shoulder 36 by which it is mounted integral with the upper plate of the neck piece 15.
  • the seal is completed by an O-ring 39 arranged on the lateral surface of the lower part of the covering part.
  • a retaining grill 40 covers the base of the covering part.
  • the coffee is brought to a pouring spout 41 through the outlet duct 42.
  • the operation of the automatic group differs only slightly from the existing groups.
  • the coffee ground by the .moul in 2 is injected directly into the inlet chamber 12. Its quantity depends on the operating time of the mill.
  • the dosing is programmed by an operating time whereas, in the previous embodiments, this function is fulfilled by means of a dosing box followed by a dosing cylinder.
  • the packing cylinder 11 pushes the volume of ground coffee injected up to the chamber of the drawer 15 placed in the receiving position. It is pressed against the flap of the ejection hatch. The stock of the packing cylinder then closes, by its side wall, the injection orifice 13 for ground coffee. It will remain in this position during the whole cycle thus putting the interior of the group in closed volume.
  • the drawer is then brought by its jack to the leaching position where the volume of coffee is crossed by a current of hot water.
  • the exhausted ground coffee is then evacuated through the ejection hatch, the coffee grounds funnel and the evacuation duct after moving the drawer. During this entire phase, the ground coffee was not exposed to the outside.
  • the preparation of a dose of coffee only required the operation of the mill of the water injection pump and the actuation of two cylinders.
  • the invention has two essential economic and technical characteristics.
  • the coffee machine according to the invention comprises only a limited number of mechanisms to be implemented in order to obtain the fully automatic preparation of the doses of coffee.
  • the ground coffee moves in a fully closed volume.
  • the group can no longer clog and the peripheral organs remain completely clean.

Abstract

Machine a cafe automatique de type compact. Cette machine a cafe se montre remarquable en ce que le cheminement du cafe moulu, depuis sa sortie du moulin (2) jusqu'a l'ejection du marc, s'effectue dans un circuit entierement ferme a l'interieur d'un groupe monobloc (1) associant les fonctions de dosage, d'admission, de chauffage, de lixiviation, d'ejection et finalement d'evacuation des marcs. Cette invention interesse tous les fabricants de machines a cafe a fonctionnement automatique.Compact type automatic coffee machine. This coffee machine is remarkable in that the path of the ground coffee, from its exit from the grinder (2) to the ejection of the grounds, takes place in an entirely closed circuit inside a monobloc group. (1) combining the functions of dosing, admission, heating, leaching, ejection and finally evacuation of the grounds. This invention is of interest to all manufacturers of automatic coffee machines.

Description

Machine de type compact pour la préparation automatique du caf dit expresso à partir de café en grains. Compact type machine for the automatic preparation of espresso coffee from coffee beans.
L' invention concerne une machine de type compact pour la préparation automatique de doses de café à partir de café en grains.The invention relates to a compact type machine for the automatic preparation of coffee doses from coffee beans.
Pour des raisons d'économie de fabrication et de valeur de pouvoir d'achat, on cherche à concevoir et à construire des machines à café plus compactes et, en même temps, plus performantes et plus économiques à l 'achat et en coût de fonctionnement.For reasons of economy of manufacture and value of purchasing power, we seek to design and build coffee machines more compact and, at the same time, more efficient and more economical to buy and in operating cost .
La poursuite de ces deux objectifs, apparemment contradictoires, réclame de nombreuses études, expérimenta¬ tions et mises au point.The pursuit of these two apparently contradictory objectives calls for numerous studies, experiments and refinements.
En effet, seuls des efforts importants dans l 'amél ioration d'une technique conduisent à des réal isations plus simples, plus compactes et plus performantes tout en abaissant le prix de revient.In fact, only significant efforts in improving a technique lead to simpler, more compact and more efficient embodiments while lowering the cost price.
Un des objectifs de l' invention est de proposer une machine pour la préparation du café à fonctionnement entièrement automatique, compacte, fiable et économique présentant, en même temps, une grande faci lité d'emploi. Cette machine, répondant parfaitement par sa technique aux besoins des uti l isateurs professionnels, pourra être proposée à la vente à un prix notablement inférieur aux machines de même capacité.One of the objectives of the invention is to propose a machine for the preparation of coffee with fully automatic operation, compact, reliable and economical, at the same time having great ease of use. This machine, which perfectly meets the needs of professional users by its technique, can be offered for sale at a price significantly lower than machines of the same capacity.
El le offre, en plus, son automatisme intégral largement apprécié du barman ou de la personne affectée au service des cafés dans un débit de boissons, cafétéria et autres I ieux de consommation.It offers it, in addition, its full automation widely appreciated by the bartender or the person assigned to serve cafes in a drinking establishment, cafeteria and other places of consumption.
L'invention remédie aux p incipaux défauts des machines existantes et offre des qualités tout à fait intéressantes.The invention remedies the main defects of existing machines and offers quite interesting qualities.
A cet effet, la machine à café selon l'invention se montre remarquable en ce que le cheminement du café moulu, depuis sa sortie du moul in jusqu'à l 'éjection du marc, se réal ise dans un circuit entièrement fermé à l'inté- rieur d'un groupe monobloc rempl issant les fonctions de dosage, d'admission, de chauffage, de l ixiviation et finale¬ ment d'évacuation des marcs , re I ié à un organe de commande pour son fonctionnement entièrement automatique.To this end, the coffee machine according to the invention is remarkable in that the path of the ground coffee, from its exit from the mill in to the ejection of the grounds, is carried out in a circuit entirely closed to the interior of a monobloc group fulfilling the metering, intake, heating, leaching and final marc removal functions, re I ied to a control member for its fully automatic operation.
Outre la diminution de prix, de poids el d'encombrement, i I en découle de nombreux avantages techniques spécifiques.Besides the price reduction, weight and size, i I follows many specific technical advantages.
Ainsi, le café moulu n'entre jamais en contact avant son éjection avec l'extérieur. De ce fait, les organes intérieurs restent parfaitement propres. il n'apparaît aucun dépôt quelconque de café, même après une longue période d'utilisation.Thus, the ground coffee never comes into contact before it is ejected from the outside. As a result, the internal organs remain perfectly clean. no deposits of coffee appear, even after a long period of use.
On supprime également tout risque d'encrassement et de mauvais fonctionnement en raison d'une résistance due à un dépôt de matière.It also eliminates any risk of fouling and malfunction due to resistance due to a deposit of material.
Par ailleurs, le café moulu dans sa première phase de trajet reste parfaitement à l'abri d'éventuelles traces d'humidité qui pourraient l'humidifier et le rendre coI Iant. Selon une autre caracté istique de l'invention, i l n'existe aucun organe mécanique pour le réglage du volume de café a moudre selon le nombre de doses ou la force du café souhaités.In addition, the ground coffee in its first phase of journey remains perfectly protected from any traces of moisture which could humidify it and make it coI Iant. According to another characteristic of the invention, there is no mechanical member for adjusting the volume of coffee to be ground according to the number of doses or the strength of the coffee desired.
La quantité désirée résulte d'une commande du mouli en temps de fonctionnement.The desired quantity results from a control of the mill in operating time.
D'autres caractéristiques et avantages sont consignés dans la description qui suit, effectuée à titre d'exemple non limitatif sur un mode d'exécution de l'invention en référence aux dessins annexés dans lesquels : . la figure 1 est une vue schématique en perspective représentant le groupe monobloc de la machine à café compacte selon l'invention. la figure 2 est une vue schématique de détai l en perspecti¬ ve représentant l'extrémité du groupe, tiroir en bout de course. la figure 3 est le schéma général du groupe et de ses organes périphériques. la figure 4 est une coupe longitudinale schématique du groupe monobloc de la machine à café compacte selon I ' invention. la figure 5 est une vue de détail de la partie encerclée en figure 4-Other characteristics and advantages are recorded in the description which follows, given by way of nonlimiting example on an embodiment of the invention with reference to the appended drawings in which:. Figure 1 is a schematic perspective view showing the unitary group of the compact coffee machine according to the invention. Figure 2 is a schematic view of detai l perspecti¬ ve showing the end of the group, drawer at the end of travel. Figure 3 is the general diagram of the group and its peripheral organs. Figure 4 is a schematic longitudinal section of the one-piece group of the compact coffee machine according to the invention. Figure 5 is a detail view of the part circled in Figure 4-
Selon la figure 1, les divers organes mécaniques sont rassemblés, sol idarisés ou en contact étroit avec le groupe central 1 de structure monobloc.According to Figure 1, the various mechanical components are assembled, idarized soil or in close contact with the central group 1 of one-piece structure.
CMPI On remarque ainsi le moul in 2 avec son group d'entraînement 3, son réceptacle d'al imentation 4, sa command 5 de réglage de finesse de monture.CMPI We thus notice the mold in 2 with its drive unit 3, its supply receptacle 4, its command 5 for adjusting the fineness of the frame.
Juste en dessous, se .trouve monté, attenan au groupe 1, le corps monobloc 6 de la chaudière 7 ave son al imentation électrique 8, son départ d'eau chaud 9 et son capteur thermostatique 10 de régulation en températu re.Just below, is mounted, adjoining group 1, the one-piece body 6 of the boiler 7 with its electrical supply 8, its hot water outlet 9 and its thermostatic sensor 10 for temperature regulation.
Sur le groupe central 1 sont réunies toute les fonctions principales : admission du café moulu, tassement lixiviation, éjection des marcs.On the central group 1 are gathered all the main functions: admission of ground coffee, compaction leaching, ejection of marc.
I I présente une structure compacte et se compose des éléments principaux suivants : un vérin de tassement 11 disposé en partie supérieure, suivi d'une chambre d'admission 12 a entrée latérale 13 communiquant par un conduit 14 avec la sortie du moul in 2 pour l'injection directe du café dans la chambre d'admission.It has a compact structure and is made up of the following main elements: a compacting cylinder 11 arranged in the upper part, followed by an inlet chamber 12 with lateral inlet 13 communicating via a conduit 14 with the outlet of the mold in 2 for the direct injection of coffee into the intake chamber.
Le groupe se compose également d'un couloir de distribution 15 le long duquel se déplace un tiroir de distribution 16 à chambre de réception 17 effectuant le va-et-vient entre une position de remplissage et d'éjection et une position de lixiviation.The group also consists of a distribution corridor 15 along which a distribution drawer 16 with receiving chamber 17 moves back and forth between a filling and ejection position and a leaching position.
La principale caractéristique nouvel le de ce tiroir concerne sa prolongation 18 de longueur égale ou voisine à sa course de manière à occuper et même, le cas échéant, à dépasser l'extrémité latérale du couloir de déplacement lorsque le tiroir se trouve en position extrême opposée, c'est-à-dire en position de lixiviation.The main new feature of this drawer concerns its extension 18 of length equal to or close to its stroke so as to occupy and even, if necessary, to exceed the lateral end of the movement corridor when the drawer is in the extreme opposite position , i.e. in the leaching position.
Le groupe automatique central 1 se poursuit vers le bas au-dessous de la position de rempl issage par un orifice d'éjection 19 des marcs, une trappe d'éjection 20 à contrepoids, un entonnoir de réception 21 et un conduit d'éjection 22 communiquant avec la réceptacle à marc (non représenté) . Le tiroir est relié mécaniquement a la tige du vérin de tiroir 23 pour son déplacement entre les deux positions extrêmes de remplissage et d'éjection, d'une part, et de lixiviation, d'autre part.The central automatic group 1 continues down below the filling position through an ejection orifice 19 of the grounds, an ejection hatch 20 with counterweight, a receiving funnel 21 and an ejection conduit 22 communicating with the grounds container (not shown). The drawer is mechanically connected to the rod of the drawer cylinder 23 for its movement between the two extreme filling and ejection positions, on the one hand, and leaching, on the other hand.
Les caractéristiques générales du groupeGeneral characteristics of the group
OWPI itrej automatique, la prolongation l8 du tiroir, l'injection latérale directe dans la chambre d'admission permettent de réaliser le trajet du café moulu en volume entièrement fermé afin d'éviter les dispersions '(fuites) et les dépôts sur les organes intérieurs.OWPI itrej automatic, the extension 18 of the drawer, the direct lateral injection into the intake chamber make it possible to make the path of the ground coffee in a fully closed volume in order to avoid dispersions (leaks) and deposits on the internal organs.
En effet, la prolongation du tiroir assure l'obturation complète de la chambre d'admission en position de I ixiviation.Indeed, the extension of the drawer ensures complete closure of the intake chamber in the ixiviation position.
Le volume intérieur du groupe est donc fermé de toute part. Les orifices et communications se trouvent obturées par des fermetures appropriées : piston du vérin de tassement, volet de la trappe d'éjection, prolongation du tiroi .The interior volume of the group is therefore closed on all sides. The orifices and communications are closed by appropriate closings: piston of the compaction cylinder, flap of the ejection hatch, extension of the spool.
On examinera plus précisément ci-après la structure du groupe automatique au niveau de la chambre de l ixiviation en se référant à la figure 4.The structure of the automatic group at the level of the leach chamber will be examined more precisely below with reference to FIG. 4.
Le groupe présente de part et d'autre de la chambre de lixiviation un module d'injection d'eauThe group presents on both sides of the leaching chamber a water injection module
24 obturant cette chambre en partie inférieure et un module de réception du café 25 obturant la chambre en partie super ieure.24 closing this chamber in the lower part and a coffee receiving module 25 closing the chamber in the upper part.
Ces modules, de par leur cons itution, assurent l'étanchéité totale permettant ainsi d'éviter l'emploi des vérins d'étanchéité de la tête d'injection d'eau chaude et de la tête d'évacuation du café.These modules, by virtue of their composition, ensure total tightness, thus avoiding the use of the sealing cylinders of the hot water injection head and of the coffee discharge head.
Le module inférieur se compose d'une pièce fixe de recouvrement 26 présentant un passage 27 pour l'arrivée d'eau. Cette pièce est solidarisée à la plaque inférieure du couloir de distribution 15- El le comporte une cavité cylindrique 28 de diamètre supérieur à celui de la chambre de lixiviation. Cette cavité forme volume récepteur pour une pièce d'étanchéité 29 à passage central 30 et à volume de diffusion 31 d'ouverture supérieure à cel le de la chambre de lixiviation protégée par une gri I le 32.The lower module consists of a fixed covering part 26 having a passage 27 for the water supply. This part is secured to the lower plate of the distribution corridor 15. It has a cylindrical cavity 28 of diameter greater than that of the leaching chamber. This cavity forms a receiving volume for a sealing part 29 with a central passage 30 and a diffusion volume 31 of opening greater than that of the leaching chamber protected by a gri I le 32.
La pièce d'étanchéité 29 est logée à contact étroit dans la cavité 28. Un joint torique 33 assure l'étan¬ chéité latérale. Une rondelle bel leviile 34 est montée entre le fond de la cavité 28 et la face supérieure de la pièce d'étanchéité 29-The sealing part 29 is housed in close contact in the cavity 28. An O-ring 33 ensures the lateral tightness. A beautiful leviile washer 34 is mounted between the bottom of the cavity 28 and the upper face of the sealing part 29-
El le procure une pression et une résistance élastiques verticales qui coopèrent avec la pression de "l'eau chaude incidente pour .garantir l'étanchéité de la l iai son.It provides vertical elastic pressure and resistance which cooperate with the pressure of the "incident hot water to. Guarantee the tightness of the connection.
L'étanchéité de l'obturation supérieure est réalisée de la même façon. Une pièce de recouvrementThe sealing of the upper obturation is carried out in the same way. A cover piece
35/ montée solidaire de la plaque supérieure dél imitant le couloir 15 présente une section circulaire de passage supérieure à la section de la chambre de lixiviation.35 / mounted in solidarity with the upper plate delimiting the corridor 15 has a circular cross-section of passage greater than the section of the leaching chamber.
La pièce de recouvrement 35 comporte un épaulement périphérique supérieur 36 en retrait par lequel elle est montée solidaire de la plaque supérieure du cou loir 15. Une ronde I le de compression 37/ par exemple du type rondelle Belleville, montée coaxiale à la pièce 35/ repose sur le chant supérieur d'une bague d'étanchéitéThe covering part 35 comprises a recessed upper peripheral shoulder 36 by which it is mounted integral with the upper plate of the neck piece 15. A compression round 37 / for example of the Belleville washer type, mounted coaxial with the piece 35 / rests on the upper edge of a sealing ring
38.38.
La pression procurée par la rondelle 37/ en appui sur l'épaulement 36, force la bague 38 en contact étroit contre la paroi supérieure assurant ainsi l 'étanchéité du t iroir 16.The pressure provided by the washer 37 / resting on the shoulder 36, forces the ring 38 in close contact against the upper wall, thus ensuring the tightness of the mirror 16.
En raison du plus faible diamètre de la chambre de l ixiviation, les efforts de poussée, engendrés Par la pression du l iquide, se transforment en poussée latérale et ne sol l icitent par conséquent que très peu la plaque de recouvrement en efforts de déso I idar i sat ion.Due to the smaller diameter of the leaching chamber, the thrust forces generated by the pressure of the liquid transform into lateral thrust and therefore do not cause it to cover the cover plate very little in terms of deo forces I idar i sat ion.
L'étanchéité est complétée par un joint torique 39 disposé sur la surface latérale de la partie inférieure de la pièce de recouvrement.The seal is completed by an O-ring 39 arranged on the lateral surface of the lower part of the covering part.
Une gril le de retenue 40, appelée communément "passoire", habille la base de la pièce de recouvrement.A retaining grill 40, commonly called "colander", covers the base of the covering part.
Le café est amené à un bec verseur 41 par le conduit de sortie 42. Le fonctionnement du groupe automatique ne diffère que peu des groupes existants.The coffee is brought to a pouring spout 41 through the outlet duct 42. The operation of the automatic group differs only slightly from the existing groups.
I l convient d'observer que le café moulu, depuis sa sortie du moul in jusqu'à son évacuation par la trappe d'éjection des marcs, traverse un volume entière- ment fermé le mettant à l'abri d'une éventuel le humidiI t should be observed that the ground coffee, from its exit from the mill in until its evacuation by the marc ejection hatch, crosses a completely closed volume making it safe from possible humidity
' extérieure et empêchant sa dispersion directe ou après étalement à travers l'une ou l'autre ouverture annexe ou occasionnel le.'' outside and preventing its direct dispersion or after spreading through one or the other annex or occasional opening.
Le café moulu par le .moul in 2 est injecté directement dans la chambre d'admission 12. Sa quantité dépend du temps de fonctionnement du moulin.The coffee ground by the .moul in 2 is injected directly into the inlet chamber 12. Its quantity depends on the operating time of the mill.
Le dosage est programmé par un temps de fonctionnement alors que, dans les réalisations antérieures, on remplit cette fonction par l'intermédiaire d'une boîte doseuse suivi d'un vérin doseur.The dosing is programmed by an operating time whereas, in the previous embodiments, this function is fulfilled by means of a dosing box followed by a dosing cylinder.
Le vérin de tassement 11 pousse le volume de café moulu injecté jusqu'à la chambre du tiroir 15 placée en position de réception. Il y est tassé contre le volet de la trappe d'éjection. La crosse du vérin de tassement obture alors, par sa paroi latérale, l'orifice d'injection 13 de café moulu. Elle restera dans cette position pendant tout le cycle mettant ainsi l'intérieur du groupe en volume fermé.The packing cylinder 11 pushes the volume of ground coffee injected up to the chamber of the drawer 15 placed in the receiving position. It is pressed against the flap of the ejection hatch. The stock of the packing cylinder then closes, by its side wall, the injection orifice 13 for ground coffee. It will remain in this position during the whole cycle thus putting the interior of the group in closed volume.
Le tiroir est ensuite amené par son vérin en position de l ixiviation où le volume de café se trouve traversé par un courant d'eau chaude.The drawer is then brought by its jack to the leaching position where the volume of coffee is crossed by a current of hot water.
La mouture épuisée est alors évacuée à travers la trappe d'éjection, l'entonnoir à marc et le conduit d'évacuation après déplacement du tiroir. Pendant toute cette phase, la café moulu n'a subi aucun contact avec l'extérieur.The exhausted ground coffee is then evacuated through the ejection hatch, the coffee grounds funnel and the evacuation duct after moving the drawer. During this entire phase, the ground coffee was not exposed to the outside.
La préparation d'une dose de café n'a nécessité que le fonctionnement du moulin de la pompe d'injection d'eau et I 'actionnement de deux vérins. L'invention présente deux caracté istiques économiques et techniques essentielles.The preparation of a dose of coffee only required the operation of the mill of the water injection pump and the actuation of two cylinders. The invention has two essential economic and technical characteristics.
La machine à café selon l'invention ne comporte qu'un nombre limité de mécanismes à mettre en oeuvre pour obtenir la préparation entièrement automatique des doses de café.The coffee machine according to the invention comprises only a limited number of mechanisms to be implemented in order to obtain the fully automatic preparation of the doses of coffee.
Le café moulu se déplace dans un volume entièrement fermé. Le groupe ne peut plus s'encrasser et les organes périphé iques restent entièrement propres.The ground coffee moves in a fully closed volume. The group can no longer clog and the peripheral organs remain completely clean.
Ces seules caractéristiques rendent l'invention méritoire et particulièrement bien adaptée au marc! ' 7 actueI .These characteristics alone make the invention meritorious and particularly well suited to marc! ' 7 actueI.
L'invention a été décrite ci-dessus en détai l. I l est bien entendu que diverses modifications d'ordre secondaire, des variantes directes, des substitutions par des moyens équivalents ou autres changements sans efforts inventifs particuliers ne sauraient faire échapper à la présente protection. The invention has been described above in detail. It is understood that various modifications of a secondary nature, direct variants, substitutions by equivalent means or other changes without any particular inventive effort cannot escape this protection.

Claims

REVENDICATIONS
1. Machine à café de type compact a groupe automatique caractérisée en ce que le cheminement du caf moulu, depuis sa sortie du moul in (2) jusqu'à l'éjection du marc, s'effectue dans un volume entièrement fermé à l'intérieur d'un groupe monobloc automatique (1) à tiroir (16) avec chambre intérieure réunissant les fonctions de dosage, d'admission, de chauffage, de lixiviation et d'éjection des marcs.1. Compact type coffee machine with automatic group characterized in that the path of the ground coffee, from its exit from the mold in (2) to the ejection of the grounds, takes place in a volume completely closed to the interior of an automatic monobloc group (1) with drawer (16) with interior chamber combining the functions of dosing, intake, heating, leaching and ejection of grounds.
2. Machine à café selon la revendication 1 caractérisée en ce que le groupe possède une liaison directe (14) entre la sortie du moulin (2) et l'entrée latérale (13) de la chambre d'admission (12) située en partie supérieure.2. Coffee machine according to claim 1 characterized in that the group has a direct connection (14) between the outlet of the mill (2) and the side inlet (13) of the intake chamber (12) located in part superior.
3. Machine à café selon la revendication 1 caractérisée en ce que le tiroir présente une prolongation3. Coffee machine according to claim 1 characterized in that the drawer has an extension
(18) de longueur suffisante pour occuper toute la longueur du couloir de translation côté position de réception même lorsque le tiroir est en position opposée extrême.(18) of sufficient length to occupy the entire length of the translation passage on the receiving position side even when the drawer is in the opposite extreme position.
4- Machine à café selon la revendication 1 caractérisée en ce que la chambre de lixiviation présente des modules d'injection et de réception à étanchéité renforcée par la pression de l'eau chaude de lixiviation.4- Coffee machine according to claim 1 characterized in that the leaching chamber has injection and reception modules with tightness reinforced by the pressure of the hot leaching water.
5. Machine à café selon les revendications 1 et 4 caractérisée en ce que le module d'injection comporte une pièce de recouvrement (26) à cavité cylindrique (28) de diamètre plus important que l'orifice de passage, dans laquelle se trouve logée à contact latéral étroit une ièce d'étanchéité (29) à ouverture supérieure à cel le de la chambre de lixiviation, les deux pièces étant séparées latéralement par un joint torique d'étanchéité- et longitudina- lement oar une rondelle à effet de pression du type bel- leville (34).5. Coffee machine according to claims 1 and 4 characterized in that the injection module comprises a covering part (26) with cylindrical cavity (28) of larger diameter than the passage orifice, in which is housed with close lateral contact a sealing part (29) with an opening greater than that of the leaching chamber, the two parts being separated laterally by an O-ring seal- and longitudinally oar a pressure effect washer of the beleville type (34).
6. Machine à café selon les revendications 1 et 4 caractérisée en ce que le module de réception comporte une pièce de recouvrement (35) à épaulement périphérique6. Coffee machine according to claims 1 and 4 characterized in that the receiving module comprises a covering part (35) with peripheral shoulder
^ en retrait (36) par lequel el le est rapportée sur la plaque supérieure du couloir (15) et par lequel elle appuie par l'intermédiaire d'une rondel le à effet de pression (37) sur le chant supérieur d'une bague d'étanchéité (38) montée coaxiale à la pièce de recouvrement (35) entre sa surface latérale et un joint torique (39) délimitant une section de passage supérieure à celle de la sortie de la chambre de lixiviation. ^ recessed (36) by which el le is attached to the upper plate of the corridor (15) and by which it presses by means of a washer the pressure effect (37) on the upper edge of a ring d sealing (38) mounted coaxially with the covering part (35) between its lateral surface and an O-ring (39) delimiting a passage section greater than that of the outlet from the leaching chamber.
7. Machine à café selon les revendications 1 et 2 caractérisée en ce que la tête du vérin de tassement obture l'orifice d'injection du café moulu pendant toute la période du cycle suivant son act ionnement. 7. Coffee machine according to claims 1 and 2 characterized in that the head of the packing cylinder closes the injection port of ground coffee throughout the cycle period following its actuation.
EP82901419A 1981-04-28 1982-04-27 Compact type machine for automatic preparation of so-called espresso coffee from grain coffee Withdrawn EP0077371A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8108821A FR2504379A1 (en) 1981-04-28 1981-04-28 COMPACT MACHINE FOR THE AUTOMATIC PREPARATION OF EXPRESSO COFFEE FROM COFFEE BEANS
FR8108821 1981-04-28

Publications (1)

Publication Number Publication Date
EP0077371A1 true EP0077371A1 (en) 1983-04-27

Family

ID=9258034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82901419A Withdrawn EP0077371A1 (en) 1981-04-28 1982-04-27 Compact type machine for automatic preparation of so-called espresso coffee from grain coffee

Country Status (8)

Country Link
EP (1) EP0077371A1 (en)
AU (1) AU8337782A (en)
BE (1) BE892977A (en)
CH (1) CH651190A5 (en)
DE (1) DE3242670T1 (en)
FR (1) FR2504379A1 (en)
IT (1) IT1148546B (en)
WO (1) WO1982003758A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936199A (en) * 1988-04-01 1990-06-26 Rancilio Macchine Per Caffe' S.P.A. Device for loading, pressing, feeding and disposing of the ground coffee in automatic espresso coffee machines
EP0476173A1 (en) * 1990-09-20 1992-03-25 Miralfin S.R.L. Apparatus for production of coffee infusions
ES2054573B1 (en) * 1991-05-13 1995-02-01 Azkoyen Hosteleria IMPROVEMENTS INTRODUCED IN PATENT INVENTION N {9101161 BY: "IMPROVEMENTS IN AUTOMATIC COFFEE DISPENSING MACHINES.
CH700019B1 (en) * 2007-03-21 2010-06-15 Eldom Rothrist Ag Broth module for coffee machine for preparation of coffee on basis of coffee fabaceous, has grinding mill, broth component, and unit for supply of hot water or water vapor
EP2127568A1 (en) * 2008-05-29 2009-12-02 Nestec S.A. Mixing and dispensing apparatus with movable mixing chamber

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Publication number Priority date Publication date Assignee Title
GB385481A (en) * 1931-03-12 1932-12-29 Iginio Grilli Improvements in or relating to machines for the preparation of coffee infusion
FR1118772A (en) * 1953-12-02 1956-06-11 Advanced machine for brewing coffee
US2887038A (en) * 1954-08-26 1959-05-19 Rosander Axel Edward Automatic pressurized coffee-maker
US3089404A (en) * 1959-10-05 1963-05-14 Alfredo J Parraga Automatic coffee machine
US3055286A (en) * 1959-10-14 1962-09-25 Valente Ernesto Automatic coffee making machines
AT282099B (en) * 1968-01-30 1970-06-10 Gianfranco Croce Device for the preparation of coffee infusions and the like.
CH511009A (en) * 1969-07-14 1971-08-15 Marbet Max Automatic coffee maker

Non-Patent Citations (1)

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Title
See references of WO8203758A1 *

Also Published As

Publication number Publication date
WO1982003758A1 (en) 1982-11-11
IT1148546B (en) 1986-12-03
DE3242670T1 (en) 1984-09-20
IT8248283A0 (en) 1982-04-26
AU8337782A (en) 1982-11-24
CH651190A5 (en) 1985-09-13
FR2504379A1 (en) 1982-10-29
BE892977A (en) 1982-08-16
FR2504379B3 (en) 1985-03-08

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