PT103776B - HYDRAULIC EXTRACTION GROUP WITH TERMOBLOCO - Google Patents

Abstract

The present invention relates to a hydro extractor group with thermoblast, for hot beverage machines, in particular for the preparation of coffee. THE HYDRAULIC EXTRACTION GROUP, ACCORDING TO THE PRESENT INVENTION WORKS IN A MACHINE UNDERTAKING: A WATER TANK (A); A PUMP (B); A HYDRAULIC GROUP WITH TERMOBLOCO (C); TWO ELECTRO-VALVES (D); ONE DOOR FILTERS (E). The present invention discloses the extractor and the thermoblade as a single assembly (C), which makes the machine simpler and prevents the temperature losses between the two components.

Description

DESCRIPTION

HYDRAULIC EXTRACTION GROUP WITH THERMOBLOCK

Technical Domain of the Invention

The present invention relates to a thermoblock hydraulic extraction group for hot beverage machines, in particular for the preparation of coffee, wherein the machine generally consists of a two resistor incorporated thermoblock cold water hydraulic group, a pump , an exhaust electro-valve or (mechanical tap), a steam and hot water electro-valve and finally a water tank.

Prior Art

Hydraulic groups are known in the art for use in hot beverage machines which have the general constituents similar to those of the present invention.

EN 103536 discloses a coffee machine wherein the machine generally comprises a hydraulic group, a thermoblock, a pump, two 2-way electro-valves, one for exhaust and one for steam, or a mechanical tap for exhaust and an electro 2-way steam valve and finally a water tank.

EP1764014 discloses a coffee machine wherein the machine generally comprises a water reservoir, at least two connected thermoblocks, two extraction chambers, one hot water outlet and two coffee outlets.

Patents referred to as prior art exhibit some of the features of the present invention and attempt to address some of the problems common to hot beverage machines. But the fact that the present invention presents the extractor and thermoblock group as a single assembly makes the machine simpler and avoids temperature losses between the two components.

Brief Description of the Figures

The present invention will now be explained in more detail using the accompanying drawings, in which the figures represent:

Fig. 1 - Exploded perspective view of the general scheme of operation;

Fig.2 - Longitudinal section view of the hydraulic group without being loaded; and

Fig.3 - Longitudinal section view of the hydraulic group under load.

Figures 2 and 3 contain the following elements:

01 - body Higher of Thermoblock 02 - body Bottom of Thermoblock 03 - body Higher of Hydraulic 04 - body Bottom of Hydraulic 05 - body Interior of Hydraulic 06 - Support from the door Filter 07 - Central Valve

- Filter for coffee extraction

- Partition Board

- Thermoblock Upper Body Resistance

- Thermoblock Lower Body Resistance

- Micro switch screw

- Water Inlet and Outlet Connection

14th - body Higher of Piston 15 - body Bottom of Piston 16 - body Higher of Piston 17 - body Bottom of Piston

- Presser foot

- Piston Valve Bushing

- Filter Holder

- Thermoblock water inlet

- Steam or hot water outlet

- Spring (which moves the piston against the movement caused by water pressure)

- Piston Seal

Summary of the Invention

The present invention aims to overcome the problems existing in existing devices by providing an innovative solution to the main features of this type of devices, namely the thermal utilization of the Hydraulic Group /

Thermoblock.

In addition to the best thermal efficiency the present invention has:

- a high response speed of hot water output to coffee as well as steam and / or hot water output (22) due to its proximity;

-an innovation in the central valve (07) which ensures the opening and closing of the coffee water outlet;

-the reduction in height in this type of couplings, due to the implementation of a simultaneous water inlet and outlet connection system (13) for both the thermoblock and the hydraulic;

- separation of hot and cold waters, thereby preventing deterioration of the piston seal (24) ensuring greater durability of this type of components requiring some care, especially at elevated temperatures;

the inclusion of an inner body of the hydraulic (05) in the hydraulic chamber, in a specific material which will prevent the appearance of limestone, which is frequent in products of this kind, keeping the walls clean and inevitably guarantees the reliability of the final product;

-Water that drives the performance of the hydraulic system returns the hydraulic chamber (05) to the Water tank (A). This water is cold due to the separation of the cold and hot circuits, thus the water in the reservoir (A) will remain cold, thus avoiding the proper conditions for the breeding of bacteria.

Description of the Invention

To better understand the scope of the invention we have

to describe the figures attached which feature a preferred representation of the invention. So with reference to Attached Figure 1 machine where find integrated the hydraulic group (03, 04) with thermoblock extraction (01, 02) accordingly with the present invention, comprises: a water tank (THE) ; a bomb

(B); a thermoblock hydraulic group (C); two solenoid valves (D); a filter holder (E).

With the help of figures 1 and 2, we now describe the set Cold water Hydraulic system with Thermoblock (01, 02) incorporated for coffee extraction.

When the filter holder (20) is placed in the hydraulic group, it contacts the microswitch bolt (12) which connects the electric current to the pump (B). Cold water is drawn in by the Water Tank Pump (B) and is sent under pressure to the hydraulic chamber (05), the water inlet and outlet connection (13) and simultaneously to the thermoblock (01, 02), by the water inlet (21).

The hot water produced by the two resistors (10, 11) in the circuit subdivided by the partitioning joint (09) of the thermoblock (01, 02) is sent directly to the coffee extraction group, consisting of the central valve (07), by the (16, 17), the piston valve bushing (19), the presser foot (18), the filter holder (20), the filter holder support (06) and the coffee extraction filter (08) through from the orifice of the central valve (07) being blocked by the electro-valve (D) or a mechanical tap.

Cold water sent to the hydraulic chamber (05) via the water inlet and outlet connection (13) serves to actuate the piston (16, 17) and is discharged back to the water tank (A) by opening the solenoid valve (D) (or mechanical tap), depending on the construction of the appliance.

Thus, the hot and cold waters are separated, and the cold water that drives the hydraulic, which in turn provides the hot water from the thermoblock to extract coffee, thus preventing the deterioration of the piston seal (24) and ensuring greater durability.

The piston (16, 17) and the Central Valve (07), in addition to ensuring that hot water flows only when it is about 0.5mm to the end of the pre-set stroke, also prevent it from receding more than the same. 0.5mm while the electro-valve (D) or mechanical tap will not open, making the system constant and safe.

Thus, when the Pump (B) starts to work, the cold water enters the port (13) and begins the descent of the Piston (14, 15), which travels the pre-established path of the presser foot (18) which at this time You have already entered the Coffee Extraction Filter (08), and the hot water flows into the coffee extraction. After extraction, the exhaust electro-valve or (mechanical tap) opens and the cold water from the Hydraulic Chamber (05) will return to the Water Tank (A), by the action of Spring (23) and will be complete. the cycle.

It should be clear that the embodiments of the present Thermoblock extraction hydraulic group (03, 04) described above are simply possible examples of implementation, merely set forth for a clear understanding of the principles of the invention. Variations and modifications may be made to the above embodiments without substantially deviating from the spirit and principle of the invention. All such modifications and variations should be included within the scope of the present invention and protected by the following claims.

Claims (4)

1- Coupled thermoblock hydraulic extraction group, in particular for the preparation of coffee, wherein the machine generally comprises a water tank (A); a pump (B); a hydraulic group (C); two electro-valves (D); A filter holder (E), characterized in that the cold water drawn in by the water tank pump (B) (A) is simultaneously being pressurized into a hydraulic chamber (05) by the water inlet and outlet connection (13) and for an integrated thermoblock (01, 02) by the water inlet (21); wherein the hot water produced by the two resistors (10, 11) in the circuit of the thermoblock (01, 02), which is subdivided by the partition gasket (09), is sent directly to the extraction group consisting of the central valve (07). ), piston (16, 17), piston valve bushing (19), presser foot (18), filter holder (20), filter holder support (06) and coffee extraction filter (08 ) through the orifice of the central valve (07), wherein the plunger (16, 17) and the central valve (07) ensure that hot water flows only at a preset end of stroke, and by preventing it from receding more than that this limit switch while a solenoid valve (D) or a mechanical tap does not open, such that cold water sent to the hydraulic chamber (05) via the water inlet and outlet connection (13), which promotes the Piston (14, 15) is again discharged to the water tank (A) by opening the electro-valve (D). Hydraulic group according to Claim 1, characterized in that the hot water produced by the two resistors (10) of the thermoblock (01, 02) and the cold water, which drives the hydraulic chamber (05), do not come into contact with each other. contact. Hydraulic group according to Claim 4, characterized in that the filter holder (20), when placed in the hydraulic group (C), comes into contact with the microswitch bolt (12) which connects the electrical current of the filter. Bomb (B). Hydraulic group according to claim 1, characterized in that said hot water passage through the central valve (07) only occurs when about 0.5mm is left to the end of said pre-established stroke, and also prevents it from receding more than same 0.5mm while the electro-valve (D) or mechanical tap does not open.