RU2141214C1 - Pellet-type ground coffee package and coffee boiling apparatus using such package - Google Patents

Abstract

FIELD: food-processing industry, in particular, coffee express boiling units. SUBSTANCE: pellet, small dose or preliminarily dosed pack of ground coffee is placed into filtering paper. Pellet or package of any kind containing ground coffee has at least one part extending partially or along the whole perimeter of package and made from sufficiently rigid material. This part serves carcass imparting strength to pellet or to any other kind of package. Apparatus has coffee boiler and horizontal power cylinder with piston enclosed in cylindrical casing. Slit is made in top part of apparatus for introducing pellet into casing. EFFECT: intensified coffee preparing process, reduced package production cost and improved quality of coffee. 9 cl, 6 dwg

Description

 The invention relates to the packaging of ground coffee in the form of dosage tablets, small portions or dosage packets. Packaging can be used in machines for making coffee express, adapted to receive such packaging having a specific shape.

 A tablet, a small portion or a bag with a dose of ground coffee are placed in a paper filter, forming a rim for its hermetic seal.

 The prior art includes a significant number of documents.

 The most noteworthy document is EP-A-0.361.569, which relates to a coffee filter, in which a certain amount of ground coffee is placed, which is located between the upper and lower paper filters mounted on the bracket.

 This last one is either a filter designed to produce a certain amount of water, or a filter element for a filter; It has a vertical flange. In general, this kit is characterized in that the upper paper filter forms a bowl with the filter or filter element, which means that the peripheral edge of the upper paper filter is bent obliquely upward.

 Patent EP-A-0.422.898 discloses an improved form of a coffee filter bag for brewing using coffee units, as well as for producing a uniform coffee infusion using various American and European coffee units. The bag contains the first part of filter paper, the surface of which is stretched, which increases its area by at least 3%. This first part forms a rounded pocket and is fastened to the second round filter paper part, which creates a flange around it for a hermetic seal of 1.27 cm in size. A certain dose of ground coffee is placed in the rounded pocket; the top of the rounded pocket is almost 50% of the total pocket volume. The first and second round filter paper parts each have a diameter of 12.7 cm; they are filled with a metered amount of ground coffee, designed to brew five cups of water. This improved form with a 1.27 cm flange in combination with an increased surface due to stretching of the filter leads to an increase in the extraction of soluble solids from coffee and to a decrease in deviations from the extraction standards.

 Application WO-92.07775 describes a sealed cartridge containing a specific dose of a substance for preparing a beverage by dissolving and extracting with a liquid in a collection vessel having the shape of a truncated cup. This whole set is placed in the notch of the "spoon" of the coffee express unit. The upper part of the cartridge is pierced by a perforator, as a result of which liquid is injected under pressure into the cartridge. The lower membrane of the cartridge bends under the action of pressure created by the injected fluid, and is punctured by sharp perforating needles located at the bottom of the cup. The resulting drink drains into the recess and can be poured into cups. The invention can find the optimal contact time of the substance in the cartridge with a liquid intended for dissolution and extraction of this substance.

 French patent 1.575.181 discloses a device for brewing, consisting of an upper and a lower filter, forming between themselves a chamber in which a metered amount of ground coffee is placed. The device also includes an annular disk designed to hold it on the upper edge of the coffee cup, a wall extending from the disk and supporting filters and coffee at a certain distance below the disk when brewing, and which can be folded in the position in which the filters and the mass of coffee are in the ring disk space, as in the package; the wall and top disc create a water tank when brewing.

 Here a problem arises, since in this case coffee is brewed, not express brew (extraction-coffee brewing). Coffee is poorly pressed. The disk acts as a hanging foot on the upper edge of the cup, for which it has a hanging edge. This disk is mounted on a hinge and can be folded inside the annular space. It cannot be used in the coffee brewing unit.

 Swiss patent CH-495.138 describes a small portion of coffee that does not have any frame or rigid part. It is also not mechanically durable, which does not allow using it for express welding.

 The disadvantages of all these coffee filters are their design: either they contain a rigid frame that must be perforated, which makes them very expensive, or their device contains less expensive paper filters, but the mechanical strength of these devices is very weak.

 Some inventors have tried to improve the mechanical strength of devices using packaging made from filter paper. To achieve this, they pressed coffee placed inside the package so that the coffee was strong. However, this leads to the fact that coffee can be carried out only under high pressure, which poses sealing problems.

 Based on the foregoing, the present invention provides a package of ground coffee in the form of a tablet, a small portion or a pre-dosed bag, placed in filter paper consisting of a central part, bordered partially or completely along its circumference with at least one part, characterized in that this part made of a rather rigid material and acts as a frame, so that the above tablet or some other form of packaging has sufficient mechanical strength, so it could s used to express units for coffee brewing, a rigid component, serving as the frame, is located in the transverse plane of the central part which forms the disk containing the ground coffee or of any other product, as used for welding.

 The circumference of a coffee tablet or some other form of coffee is formed by filter paper forming an edge for an airtight seal, which is created on part or all of the periphery of the tablet or any other form.

 A coffee tablet or some other form consists of a central part formed by filter paper containing ground coffee, and a peripheral part or a flange for sealing, the central part having a disk shape and the peripheral part having a ring shape.

 A rigid part, acting as a frame, is formed by two rings located on both sides of the filter paper, forming a flange for sealing.

 According to an embodiment of the invention, the rings are made of cardboard.

 The invention also relates to an express coffee brewing unit consisting of a boiler and a power cylinder according to the classical scheme, which in turn has a cylindrical body in which a piston is enclosed, which exerts pressure on the tablets or other forms of coffee packaging, and characterized in that the introduction of the tablet coffee in the express unit is carried out in a vertical plane, and the piston acts on the tablet in the horizontal plane, as well as the fact that the express unit is equipped with stops located at the end of the boiler perpendicular brightly relative to the longitudinal axis of the express coffee brewing unit, and the power cylinder interacts with the boiler at the level of the stops, fixing the tablet or other coffee packages in the right position, which is clamped through its rigid part between the stops on one side and the boiler on the other side.

 The master cylinder consists of a cylindrical body in which the piston is enclosed.

 Each of the stops is movable and placed on an axis parallel to the longitudinal axis of the express coffee brewing unit.

 In the upper part of the express aggregate there is a gap located vertically and above the stops so that the position of the rigid part of each tablet or any other package between the stops on the one hand and the boiler on the other hand is occupied only by its gravity.

 A hole has been made in the vertical direction and below the stops so that when these stops, after releasing the tablet, take a parallel position relative to each other, this tablet or any other packaging does not hold onto its rigid part and falls out of the express coffee brewing unit out under gravity.

 The accompanying drawings are given to illustrate the invention and should not be construed as limiting its scope. These drawings represent a preferred embodiment of the invention, they also allow a better understanding of the invention.

FIG. 1 is a cross-sectional view of a package according to the invention;
FIG. 2 is a top view of the package;
FIG. 3 is a perspective view of one embodiment of an express coffee brewing unit using the coffee package shown in the previous figures;
FIG. 4 is a longitudinal horizontal section of an express coffee brewing unit made at the level of the brewing chamber until the cylindrical body of the power cylinder approaches the boiler;
FIG. 5 is a section identical to that shown in FIG. 4, at the moment of approaching the cylindrical body of the power cylinder with the boiler;
FIG. 6 is a section identical to that shown in FIG. 4 and 5, at the end of the approximation of the cylindrical body of the power cylinder with the boiler, which forms a brewing chamber.

 The present invention provides for brewing ground coffee 4 in the form of tablets, portions or dosage packets, which can be used in various units, such as an express unit for brewing coffee 2.

 Of course, the package may, without going beyond the scope of the present invention, contain ground coffee 4 or some other substance that can be brewed or diluted with water, such as tea, chicory, etc.

 A tablet, a serving of coffee or a pre-dosed bag containing ground coffee 4 or some other substance, as indicated in FIG. 1 are placed in filter paper 3, wherein a tablet, a portion of coffee or a pre-dosed bag form a flange 5 around the circumference for an airtight seal, which is characterized in that it is formed in whole or in part by filter paper 3 and at least one part 6 made of sufficiently rigid material, which makes it possible to give good mechanical strength to a tablet or other packages 1.

 As is well shown in FIG. 2, the coffee tablet 1 consists of a central part containing ground coffee 4 and formed by filter paper 3 that covers the coffee, and of a peripheral part or a bezel 5 for hermetic sealing, the central part having the shape of a disk and the peripheral part having the shape of a ring.

 Of course, any other form that performs the same functions and leads to the same results is considered as a technical equivalent.

 In a preferred embodiment of the invention, the rigid part 6 is formed by two rings located on both sides of the filter paper 3, forming a flange 5 for hermetic sealing.

 The rings are made of cardboard.

 According to a preferred embodiment of the invention, the rigid part 6, acting as a carcass, is located in the transverse plane of the central part, creating a disk containing ground coffee or some other brewing product.

 The above ring and the rigid part 6 to strengthen the strength are smooth and flat.

 The material from which they are made is sufficiently tough and biodegradable, which contributes to the good operation of the express coffee brewing unit and the rapid destruction of the packaging after it has been used.

 An express coffee brewing unit 2 is shown in FIG. 3. It consists mainly of the boiler 7, the power cylinder 8 and of the stops 9 located on one of the ends of the boiler 7. The power cylinder interacts with the boiler 7 at the level of the stops 9 in order to fix the coffee tablet 1.

 Tablet 1 is inserted into the express aggregate 2 along the arrow F4 in a vertical plane and perpendicular to the longitudinal axis of the express aggregate 2. This tablet 1 is guided by vertical grooves 17 located in the stops 9 for this purpose.

 The master cylinder 8 has a classic shape, that is, it consists of a cylindrical body 10 in which the piston 11 is placed.

 The general scheme of operation of this express coffee brewing machine 2 will be better explained as follows.

 The introduction of tablet 1 into the express aggregate is carried out in a vertical plane, and the action of the piston 11 occurs in a horizontal plane.

 The upper part of the coffee brewing express assembly 2 of FIG. 2, has a slit 12 located above the stops 9, which allows each tablet 1 moving along the arrows F4 and F5 to occupy the correct position inside the express aggregate 2, and the movement of the tablet occurs under the influence of its gravity.

 After the tablet occupies a position at the stop level 9 between the boiler 7 on the one hand and the cylindrical body 10 on the other hand, it is clamped between this boiler 7 and the cylindrical body 10 of the power cylinder 8 as a result of the movement of the cylindrical body 10 in the direction of the arrow F3, which is clearly visible in FIG. 4, 5 and 6.

 Of course, the boiler 7 at the same time or while the tablet is moving is filled with water going in the direction indicated by arrow F7 through the water supply pipe 14.

 The cylindrical body 10 of the ram continues to approach the tablet 1 in the direction of the arrow F3 so that the stops 9 and the rigid part 6 of the tablet come into contact with it, as shown in FIG. 5. Rapprochement continues, as indicated in FIG. 6, which causes the movement of the stops 9 along the arrow F10 along their axes 13, while the movement of the spring 16 is compressed. The movement of the stops 9 continues as far as the cylindrical body 10 and the boiler 7 allow. The cylindrical body 10 and the boiler 7 are so close that they almost touch each other, they are separated only by the hard part b of the tablet 1, which acts as the frame of the tablet and the sealing gasket.

 The cylindrical body 10 has a recess located opposite the same recess on the boiler 7. When the cylindrical body 10 approaches the boiler 7, these two recesses form a brewing chamber 18, the tightness of which is ensured by the rigid part 6.

 When the filtering process ends, the reverse movement begins, that is, the cylindrical body 10 begins to move away from the boiler 7 in the direction of arrow F9, which can be seen in FIG. 4.

 At this point, the springs 16 are opened and the tablet 1 is returned using the stops 9 to its initial position. This movement of the stops is carried out in the direction of the arrow F11.

 Water is supplied to the boiler 7 or already preheated, or heated directly inside the boiler 7. The passage of water under pressure through the tablet 1 allows you to get exclusively aromatic coffee. After that, coffee can be removed from the boiler through the tube 15; The coffee output path is indicated by arrow F8.

 The movement of the cylindrical body 10 relative to the piston 11 is associated with the filling of the cylindrical body 10 of the power cylinder 8 with a liquid, for example water.

 In order to simplify the understanding of the figures, these movements, as well as the parts driving the cylindrical body, are not shown in the figures. They are known to all from the state of the art.

 Each stop 9 is movable relative to the axis 13 parallel to the horizontal axis of the coffee brewing machine 2, so that the stops 9 can rotate in a vertical plane in the direction indicated by arrows F1 and F2, which allows them to create a more or less blocking angle that allows holding tablet 1. This movement is carried out around the axis 13 of each stop 9, which allows the tablet 1 or to be fixed at the level of the brewing chamber 18 before this chamber 18 is formed, that is, when the longitudinal axes of the two stops 9 form a dy is the angle, the magnitude of which is directed upwards, or fall out under the influence of gravity on its arrow F6 of express coffee machine for brewing 2 when the longitudinal axis 9 of the abutments are parallel.

 This exit of the tablet is carried out through an opening located below the stops 9, but not shown in the figures.

 The movement of the stops 9 along the arrows F1 and F2 is automatically associated with the position of the cylindrical body 10.

 This automatic movement of the stops 9 is carried out using a range of mechanical parts, such as, for example, cams, thrusts, not shown in the figures, but whose operation is well known in the art.

Positions in the drawings:
1. A tablet, serving or sachet of pre-dosed coffee.

 2. Coffee brewing device (express unit).

 3. Filter paper.

 4. Ground coffee.

 5. Flange for hermetic sealing.

 6. A rigid part to enhance strength, acting as a frame and a sealing gasket.

 7. The boiler.

 8. The power cylinder.

 9. Stops.

 10. The cylindrical housing of the power cylinder 8.

 11. The piston of the power cylinder 8.

 12. The upper slot of the express aggregate.

 13. The axis of rotation and movement of the stop 9.

 14. Water supply pipe.

 15. The coffee outlet handset.

 16. The spring of the axis 13.

 17. Stop groove 9.

 18. The brewing chamber.

 F1 and F2. The direction of rotation of the stops 9 relative to the boiler.

 F3 and F9. Directions of movement of the housing 10 of the power cylinder 8.

 F4, F5 and F6. Directions of movement of tablets or other packages 1 by gravity.

 F7 and F8. Direction of movement of water and instant coffee.

 F9 The direction of the reverse movement to the arrow 3 under the action of the power cylinder 8 or the removal of the cylindrical body 10 from the boiler 7.

 F10 The direction of the stops 9 in the grooves with the compression of the springs 16 when the movement of the power cylinder in the direction of the arrow F3.

 F11 The direction of exit of the stops 9 from the grooves under the action of the springs 16 when the power cylinder moves in the direction of the arrow F9.

Claims (9)

 1. The packaging of ground coffee in the form of a tablet, a small portion or a pre-dosed bag formed by filter paper surrounding the ground coffee (4), the contents in the form of ground coffee (4) constituting the central part of the tablet or other form, partially or completely surrounded by its periphery with at least one part (6), characterized in that the part (6) is made of a material having rigidity sufficient to impart mechanical strength to the tablet or other form (1), allowing its use in express coffee brewing machines, the rigid part (6) forming the packaging frame located in the plane of the central part forming a disk containing ground coffee or a similar brewing product.  2. Packaging according to claim 1, characterized in that the periphery of the tablet or other form (1) is formed by filter paper (3) forming a flange (5) for a sealed seal, continuing on part of the periphery or along the entire periphery of the tablet or other form (1 )  3. Packaging according to claim 1 or 2, characterized in that the tablet or other form (1) consists of a central part formed by filter paper containing ground coffee (4), and a peripheral part or an edge (5) for tight sealing, which respectively have the form of a disk and a ring.  4. Packaging according to any one of the preceding paragraphs, characterized in that the rigid part (6) serving as a frame is formed by two rings located on both sides of the filter paper and forming a flange (5) for tight sealing.  5. Packaging according to claim 3 or 4, characterized in that said rings are made of cardboard.  6. Packaging according to any one of claims 1 to 3, characterized in that said rings or rigid part (6) are even and flat.  7. A device (2) for brewing coffee, containing, according to the classical scheme, a boiler (7) and a horizontal power cylinder (8), which contains a cylindrical body (10) in which a piston (11) is enclosed, using vertically placed coffee packaging in the form tablets or another form (1), characterized in that the upper part of the indicated device (2) for brewing coffee contains a slot (12) for introducing a tablet (1) or another form according to any one of claims 1 to 6 in a vertical plane, the piston (11) acts in the horizontal plane, and in addition The device is equipped with stops (9) located on one end of the boiler (7) perpendicular to the longitudinal axis of the device (2) so that the power cylinder (8) interacts with the boiler (7) at the level of these stops (9) to fix the position of the tablet or other shape (1) coffee that is held by their rigid part (6) between the stops (9) on one side and the boiler (7) on the other side.  8. The device according to p. 7, characterized in that each emphasis is mounted to move on an axis (13) parallel to the longitudinal axis of the device for brewing coffee.  9. The device according to claim 7 or 8, characterized in that the slot (12) in the upper part of this device (2) is located vertically above the stops (9) so that the placement of the rigid part (6) of each tablet or other shape between the stops ( 9) on the one hand and the boiler (7) on the other hand, it can be provided by gravity, and, essentially, vertically below the stops (9) there is a hole made so that when the stops (9) moved in a parallel position to each other, a tablet or other form no longer held by its rigid part (6) could fall through a decree Noe opening outwardly from the device (2) for brewing coffee by gravity.

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