Coffee dispenser group, in particular for espresso coffee, for a drinks machine

A coffee dispenser group, in particular for espresso coffee, for a drinks machine comprises two shoulders (62) connected together by two sealing blocks (63) arranged at the bottom and an upper brewing cylinder (64) arranged on top. Said shoulders have guide and sliding runs (65) for a mobile lower brewing device (66), said lower brewing device (66) being equipped with a plunger (69) that can slide inside it guided by a first lever (70) through a slot (71) formed in the lever itself and the lower brewing device (66) being connected to an actuation linkage to be driven from an initial position for feeding the ground coffee to a brewing position engaged with the upper brewing cylinder (64).

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable

Not Applicable

Not Applicable

REFERENCE TO A MICROFICHE APPENDIX

Not Applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention refers to a coffee dispenser group for a drinks machine.

In particular, the invention refers to an espresso coffee dispenser group.

Automatic drinks machines that, in various forms, allow the user to interact to order and personalise drinks are currently known and widely used.

2. Description of Related Art

Modern machines can be considered to consist of different functional blocks or groups.

For example, the container group for solubles, the cup container group, the drinks group (coffee, tea, milk and the like), and the accessory group are commonly installed.

Amongst the various functional groups, the espresso coffee group is generally particularly complex in terms of its components, and its integration in the machine obliges rather onerous structural choices both in terms of bulk and in terms of cost.

The general purpose of the present invention is that of making a coffee dispenser group, in particular for espresso coffee, for a drinks machine with a reduced number of components that is cost-effective to make and that has low bulk.

BRIEF SUMMARY OF THE INVENTION

In view of the aforementioned purpose, according to the present invention, it has been thought of to make a coffee dispenser group in particular for espresso coffee, for a drink machine, having a structure comprising two shoulders (62) connected together by two sealing blocks (63) arranged at the bottom and an upper brewing cylinder (64) arranged on top, said shoulders having guide and sliding runs (65) for a mobile lower brewing device (66), said lower brewing device (66) being equipped with a plunger (69) that can slide inside it guided by a first lever (70) through a slot (71) formed in the lever itself and the lower brewing device (66) being connected to a actuation linkage to be driven from an initial position for feeding the ground coffee to a brewing position engaged with the upper brewing cylinder (64).

DETAILED DESCRIPTION OF THE INVENTION

With reference to the figures, a coffee dispenser group30, in particular for espresso coffee, is illustrated comprising a mechanism made from plastic for food products positioned under a coffee grain container31equipped with a grinder61and doser61′, arranged in cascade under said container.

The movement of the group is carried out thanks to an outer motor reducer32that, with direct transmission, places an assembly of levers and linkages in rotation.

The group comprises two shoulders62connected together by two sealing blocks63arranged at the bottom and an upper brewing cylinder64arranged on top.

In the shoulders62guide and sliding runs65have been formed for a mobile lower brewing device66.

In the rest position illustrated inFIG. 2, a funnel67, arranged under the doser61′ of the coffee grinder61, conveys the ground coffee into the mobile lower brewing device66.

The ground coffee is deposited on a microfilter68fixed onto a plunger69that is perforated at the bottom to allow the subsequent passage of water to brew the coffee.

The plunger69slides inside the lower brewer and is guided by a first lever70through a slot71formed in the lever itself.

The actuation linkage foresees two side connecting rods72and a shaft73on which the lower brewing device66is hinged.

Through the rotation of one of the two side connecting rods72engaged with the motor, the lower brewing device66is driven guided by the runs65, upwards until it engages with the upper brewing cylinder64.

In this position the previously set amount of hot water, necessary to form the coffee brew passing through the ground coffee pressed on the microfilter68, is introduced through the upper brewing cylinder64.

The coffee brew comes out from the lower brewing device66through a spout74to which a flexible duct is connected, preferably a silicon tube.

At the end of this operation in which the whole of the brewing device has remained still in the upper part of the dispenser group, the motor is restarted to take the components to the starting point.

During this step the tablet or block formed from the used ground coffee powder, which cannot be reused, is discharged.

The first lever70that moves the plunger69has a cam-shaped profile75in its bottom part.

During this second step, a roller, foreseen at the end of a second lever76that is engaged between the two side connecting rods72, comes into contact with the cam75. Its task is that of guiding the movement of the first lever70and therefore the position of the plunger69during the cycle.

The perfect synchronisation of the return movement of the lower brewing device66and of the movement of the first lever70guided by the second lever76moves the plunger in such a way that during the return to the starting position, it is positioned for a few degrees in the highest position of the lower brewing device66making the tablet of used coffee project into the high part thereof.

The lower brewing device66, guided by the run65formed on the shoulders62, shall pass under the part of the funnel67that is equipped with a projection67bthat is suitably shaped to carry out the scraper function.

The projection67btakes care of discharging the used tablet making it slide on the inclined part of an inclined plane67ctowards the outside of the group and repositioning itself under the funnel in the starting position to be ready for the next cycle.

From that which has been described above with reference to the figures, it is clear how a coffee dispenser group, in particular for espresso coffee, for a drinks machine according to the invention is particularly useful and advantageous. The purposes mentioned in the preamble of the description are thus achieved.

Of course, the shapes of the coffee dispenser group, in particular for espresso coffee, of the invention can be different from the one shown merely as a non-limiting example in the drawings.

The scope of protection is therefore defined by the attached claims.