DE3033340A1 - ESPRESSO COFFEE MACHINE FOR HOUSEHOLD USE - Google Patents

Description

3033340 PATENT Attorney DIPLtING. PAUL DIEHL LIETZENBURGER STRASSE 53 1OO0 BERLIN 15 CALL (030) 8 82 20 63/8 82 20

09/01/1980 D / MD

Piero WASCAEDI Via Verona, 3

27100 - Pavia Italy

Espresso coffee machine for household use

Espresso coffee machine for household use The present invention relates to an espresso coffee machine for household use

It is known that currently small coffee machines for the preparation of espresso coffee that are made for household use are determined.

These machines usually have a small kettle that contains water and in which a electrical heating resistor is arranged · From the mentioned boiler the water is after e3 has reached a predetermined temperature, poured the desired amount onto the coffee powder, which has been prepared in the filter provided for this purpose.

The coffee machines designed in this way have the disadvantage that they only have a limited amount of overheating Generate steam, which is usually used to boil liquids such as milk, liqueurs, etc. the like is used.

Furthermore, the steam generated by such machines is not only sparse but also hot Water mixes, causing an undesirable dilution of the liquid to be heated.

The aim of the present invention is to manufacture an espresso coffee machine for household use similar to those listed above

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Does not have any disadvantage.

In particular, the aim of the present invention is to provide an espresso coffee · machine for household use, the one Sufficient amount of pure steam, i.e. waterless steam, is generated.

This and other objects are achieved in accordance with the present invention with an espresso coffee machine for household use, one small boiler and one in this boiler arranged electrical heating resistor, the temperature of the resistor by two separate thermostats is controlled, which are set so that the water of the boiler on the for preparing the coffee infusion is maintained at the most suitable temperature or at the most suitable temperature for the output of steam.

The water contained in the boiler can thus be brought to two different temperatures, depending on whether you want to use it as an infusion liquid or as superheated steam.

In particular, the infusion water is dispensed by letting more water into the kettle instead of that from a storage container via a preferably designed as a vibration pump Pump is supplied.

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The infusion water is tapped in the upper area of the kettle, ie in the area in which it is at the highest temperature.
5

The output of steam, on the other hand, takes place when the pump is at a standstill and is controlled by a manually operated tap controlled.

The functional and structural features of the espresso coffee machine for household use according to the present invention can can be better understood by the following description, in which reference is made to the figures of FIG Reference is made to the accompanying drawings, which one exemplified preferred but do not represent an exclusive embodiment of the present coffee machine and in which :

Pig. 1 is a perspective view

of the boiler body including the resistance and the two Represents thermostats}

Fig. 2 is a perspective view of the base of the boiler according to Fig. 1, the filter and the filter holder in the disassembled State represents;

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8th-

and FIG. 3

shows a vertical section through the boiler

With reference to the figures mentioned, the espresso coffee machine is intended for household use according to the present invention on a cylindrical tubular body 1, which under a square Plate 2 is mounted.

In the tubular body 1, an electrical resistor 3 is arranged, which is wound in a helical manner and is suitably protected and supported by the plate 2 · The end sections 4 of this resistor 3 end at plate 2.

This plate 2 is provided with an inlet connection 6 and an outlet connection 5. The inlet connection 6 enters the tubular body 1 via an internally pierced block 7, while it is over a pump, not shown, preferably a vibration pump, with one also not shown Connected to feed tank for cold water.

On the outer surface of the tubular body 1, the sensing end 8 is fastened a calibrated to about 150 ⁰ C thermostat. This thermostat controls the current feed of the resistor 3 so that its temperature is sufficient for the steam generation.

Da3 sensor end of a second thermostat, which is in the drawing is not shown, is in the blind

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. rohr.9 used, which dips into the interior of the tubular body 1, so that it detects the temperature of the infusion water. This second thermostat is calibrated to a little more than 10O ⁰ C and controls the current feed of the resistor 3 in such a way that its temperature is sufficient for the generation of the infusion water.

Switching on the thermostat set to the higher temperature causes it to switch off the thermostat set to the lower temperature.

The tubular body 1 is enclosed below by a cylindrical box-shaped attachment 10, the

is provided peripherally with radial connecting tabs 11. The box attachment 10 is closely connected to the upper plate 2 by means of spacer columns 12 which are provided with clamping nuts. 2Ö

The cylindrical attachment 10 is provided in the area of its central part with a closure disk 13, which in turn is provided with a central hole in which a vertical tube 14 is inserted tightly, extending into the ·. Near the top plate 2 extends.

The cylindrical attachment 10 is under the mentioned disc 13 with a not shown perforated disc and provided at the bottom with an inner peripheral seat, which is suitable for

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a filter holder 15 over a substantially take up helical connection.

This filter holder 15 is provided with a peripheral groove 16, in particular on the inner wall, which is open at the top via two or more opposite or symmetrical sections 17, these sections being adapted to receive two or more teeth 18 with which the Outer wall of the filter 19 is provided.

By this measure, the filter 19 can easily be fixed in the filter holder 15, the The exhausted ground coffee can fall off by tapping the filter holder itself without the risk of the filter falling out of the corresponding retaining seat.

How the present espresso coffee machine works for household use is the following: if the thermostat that controls the temperature of the water regulates to the lower value, is switched on and after the water has reached the final temperature the pump located between the storage tank and boiler 1 is started

Da3 causes new water to flow into boiler 1 a slight overpressure, which allows the hot water to counteract a to overcome small, arranged at the foot of the small pipe 14 valve and through the pipe H

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in. the filter 19 to arrive.

If, on the other hand, the production of steam is desired, the thermostat, which controls the temperature of the Water regulates to the higher value, switched on, whereby superheated steam is generated in boiler 1, which is dispensed via a shaped line (not shown), which is operated with a hand-operated The stopcock and the outlet connection 5 connected is··

From the above and from consideration of the various figures in the accompanying drawings clearly show the usefulness and ease of use that the Characterize espresso coffee machine for household use according to the present invention.

Modifications, conversions and variants can be made to the various parts of the espresso coffee machine for household use, for display purposes, for example and without limitation in the figures of the accompanying drawings is shown within the spirit of the present invention and without departing from the scope thereof.

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T o u t o m e η a ssion

Espresso coffee machine with a box-like Body (1), in which an electrical heating resistor (3) is inserted, its temperature is controlled by two thermostats, which are calibrated at different temperatures, so that the water in the boiler is used to generate the coffee infusion or superheated steam Suitable temperature is kept · These thermostats are on the outside of the boiler or in a small tube immersed in the boiler.

Patent attorney

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List of drawing positions

1 Tubular body 2 square plate 3 resistance 4th End section e 5 Outlet connection 6th Inlet connection 7th Blocks 8th , Feeler end 9 Blind pipe 10 Essay 11 Connecting straps 12th Spacer columns 13th disc 14th tube 15th Filter holder 16 Groove 17th Sections 18th teeth 19th filter

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jk ORIGINAL INSPECTED

Claims (5)

Expectations ; f1. \ Espresso coffee machine for household use ^ - ^ use, with one containing the water cylindrical tubular body (boiler) and an electrical one in said tubular body used heating resistor, characterized in that it further comprises two thermostats, each of which on another temperature is calibrated, in such a way that infusion water or overheated Steam is generated, with these thermostats separately and individually supplying electrical power of the heating resistor (3). 2. Espresso coffee machine according to claim 1 _f, characterized in that one thermostat is set to about 150 ⁰ C and the other to about 100 ⁰ C. 3. Espresso coffee machine according to claim 1 or 2, characterized in that the sensor end (8) of the thermostat calibrated to the higher temperature on the outer surface of the tubular body (1) is attached, and that the sensor end of the to the lower temperature calibrated thermostat is inserted into a blind tube (9), which dips into the inside of the tube body (1). 1300H / 0786 4 · Espresso coffee machine according to one of claims 1-3 »characterized thereby t that the cylindrical tubular body (1) is fixed under a square plate (2) which supports the two end sections of the electrical resistor (3). 5. Espresso coffee machine according to claim 4 »thereby marked that the plate (2) with one entering the tubular body (1) and via a pump, preferably one Vibrating purape, inlet connection connected to a storage tank for the cold water (6) and one with a shaped pipe fitted with a hand-operated stopcock connected outlet connection (5) is provided 6. Espresso coffee machine according to the preceding claims, characterized in that that the tubular body (1) down from a cylindrical box-like attachment (10), which is provided with radial connecting straps, enclosed and with the upper Plate (2) is connected via spacer columns (12), this cylindrical attachment in the Area of its central portion is provided with a closure disc with a central hole is provided in which a small vertical tube (14) is tightly inserted is that up close to the 13GQ1S / Q786 8th, - 3 - ■ upper plate (2) and is provided with a valve in the lower part Espresso coffee machine according to claim 6, characterized in that the cylindrical attachment (10) under the closure plate (2) with a perforated disc and below with a peripheral inner one Seat is provided which is capable of a filter holder (15) with essentially take up helical connection. Espresso coffee machine according to claim 7, characterized in that the filter holder (15) is provided on the inner wall with a peripheral groove (16) which over two or more opposite or symmetrical sections (17) upwards is open, these sections being capable of having two or more teeth (18) which the outer wall of the filter (19) is provided to receive. 130015/0786