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.

Landscapes

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

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9258034

Family Applications (1)

Country Status (8)

Cited By (2)

Families Citing this family (3)

Citations (7)

• 1981
  • 1981-04-28 FR FR8108821A patent/FR2504379A1/fr active Granted
• 1982
  • 1982-04-22 CH CH2437/82A patent/CH651190A5/fr not_active IP Right Cessation
  • 1982-04-26 IT IT48283/82A patent/IT1148546B/it active
  • 1982-04-27 BE BE2/59680A patent/BE892977A/fr not_active IP Right Cessation
  • 1982-04-27 AU AU83377/82A patent/AU8337782A/en not_active Abandoned
  • 1982-04-27 EP EP82901419A patent/EP0077371A1/fr not_active Withdrawn
  • 1982-04-27 DE DE19823242670 patent/DE3242670T1/de not_active Withdrawn
  • 1982-04-27 WO PCT/FR1982/000075 patent/WO1982003758A1/fr active Application Filing

Patent Citations (7)

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