WO2003079875A1 - Espressomaschine - Google Patents
Espressomaschine Download PDFInfo
- Publication number
- WO2003079875A1 WO2003079875A1 PCT/AT2003/000003 AT0300003W WO03079875A1 WO 2003079875 A1 WO2003079875 A1 WO 2003079875A1 AT 0300003 W AT0300003 W AT 0300003W WO 03079875 A1 WO03079875 A1 WO 03079875A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- espresso machine
- machine according
- piston
- piston rod
- sensor
- Prior art date
Links
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
- A47J31/40—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea
- A47J31/402—Liquid dosing devices
-
- 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
Definitions
- the invention relates to an espresso machine with a metering piston accommodated in a metering piston cylinder for pressing an amount of water metered in the metering piston cylinder through a filter holder filled with coffee powder, wherein the metering piston is driven by a hydraulically driven working piston which is fixedly connected to the metering piston via a piston rod.
- Such espresso machines are known as hydraulic piston press machines, in which previously the dosage of the amount of water was determined by a the position of the metering determining scanner.
- a piston pressing machine in which for metering the amount of water, a scanning device is provided with a rotatable lever to which a vertically projecting from above into a cylinder surrounding the dosing piston sensing pin is connected, wherein the cylinder at its Top three different ring stages for sampling by means of the metering piston has.
- the sensing pin is pivoted differently when actuating an actuating knob, so that the metering piston is lifted until the sensing pin comes into contact with an annular step, and thus is moved back to its original position.
- the aim of the present invention is to provide an espresso machine of the type mentioned, in which the control for metering the amount of water is improved, in particular, a possibility should be created in which the dosage of the amount of water can be electronically controlled.
- the sensor device has at least one non-contact sensor, in which complex mechanical pivotally mounted scanning devices can be omitted and in which a certain freedom in the arrangement of the sensor is possible. In addition, no significant noise is caused by the portioning.
- the path traveled by the piston rod or its position and thus the quantity of water metered in the metering piston cylinder can be determined when the scanning direction of the sensor runs essentially perpendicular to the axis of the piston rod.
- the position of the piston rod partially surrounded by water during the stroke both in the metering piston cylinder and in the working cylinder can be scanned in a dry environment.
- the sensor device has at least one optoelectronic sensor.
- the detected position of the piston rod can be further processed directly in a sensor unit which converts the detected signal, and thus an electronic control of the metering piston movement can be achieved.
- a traditional piston press machine with its known advantages in terms of the high quality of the prepared espresso with modern electronic systems, especially with electronic billing systems in the catering, compatible.
- an electronic signalriseder sensor such as a Hall sensor can be used.
- the comparatively small optoelectronic sensor can be easily attached to a location convenient for sensing the piston rod position and processing the signal detected by the optoelectronic sensor
- Opto-electronic sensor unit are arranged spatially separated from the opto-electronic sensor.
- the sensor is read diglich be formed by the end of the glass fiber.
- the sensor device is assigned to an electronic control unit of the espresso machine.
- the control electronics unit portioning keys are assigned to determine the amount of water to be metered, as thus directly on the operation of a positioning the desired amount of water can be dosed.
- the piston rod for detecting the position has at least one mark.
- the piston rod for detecting the position has a plurality, preferably 10 to 30, scanning rings. If the scanning rings have a height between 0.1 and 10 mm, preferably 0.5 mm, a very accurate determination of the position of the piston rod is possible, whereby a very accurate dosage of the desired amount of water is possible, advantageously the distance between the Abtastringen between 0.1 and 10 mm, preferably 1 mm.
- the scaling can be chosen even finer, whereby a substantially continuous dosage of the desired amount of water is possible.
- the scanning rings can be produced in a simple manner by surface treatment of the piston rod, for example by laser machining.
- the piston rod is made of steel or the like and the scanning rings are made of a material having substantially the same hardness as the material of the piston rod, wherein the scanning rings may be made of a ceramic-based material.
- To produce the piston rod with inserted ceramic rings first grooves are milled into the piston rod, then the ceramic inserts are applied and then the surface of the piston rod is machined, so that the surface of the piston rod in the region of the scanning rings is substantially uniform. has a low surface roughness.
- the substantially uniform surface roughness is particularly advantageous when entering the piston rod in the working cylinder, since thus a tight closure of the working cylinder is ensured.
- Fig. 1 shows schematically a partially sectioned view of the espresso machine
- Fig. 2 in detail II an opto-electronic sensor for detecting the piston rod position
- FIG. 3 is a view of the piston rod with Abtastringen.
- Fig. 4 shows schematically a circuit diagram of the control electronics for the position detection of the piston rod.
- FIG. 1 an espresso machine 1 with a working piston 2 and a metering piston 3 is shown schematically, which are interconnected via a piston rod 6.
- the working piston 2 is received in a working cylinder 4 and serves to drive the metering piston 5 slidably mounted in the metering piston 3, the introduced into the Dosierkolbenzylinder 5 water against coffee powder, which was filled into a portafilter 7 presses in its lowest position, so that espresso coffee from the openings 7 'in the filter holder 7 exits.
- the piston rod 6 has approximately 20 scanning rings 9 for this purpose, which can be detected by the optoelectronic sensor 8.
- the scanning rings 9 are made of a ceramic material, which is previously used in the piston rod milled grooves. Thereafter, the surface 6 'of the piston rod 6 is processed so that a substantially uniform surface roughness is given, whereby Any leaks in the passage of the piston rod 6 through the opening 10 in the working cylinder (see Fig .. 2) can be avoided.
- the surface roughness in the area of the scanning rings after the surface treatment may be 0.001 mm, and the piston rod in the remaining area may have a surface roughness of 0.04 mm.
- the water supply to the working cylinder 4 and the Dosierkolbenzylinder 5 is interrupted and via the water connection 11 in the working cylinder 4 in the upper cylinder section 4 "of the working cylinder water is introduced, so that the working piston 2 is pressed down and this shifts the metering piston 3 downwards via the connection with the piston rod 6, whereby the hot water for coffee preparation is pressed by the coffee powder received in the filter holder 7.
- Figure 1 also shows lateral cooling water connections 12 which are provided for cooling the metering piston cylinder 5.
- the schematic circuit diagram in FIG. 4 shows, in particular, that the sensor device 8 has the opto-electronic sensor 8 ', whose scanning direction is arranged substantially perpendicular to the axis of the piston 4, via an optical fiber cable 13 with an opto-electronic sensor unit 14, whereby a space-saving arrangement of the sensor 8 'between the working cylinder 4 and the metering piston 5 (see Fig. 2) is possible, while the actual sensor unit 14 of the sensor device 8 thereof can be arranged spatially separated.
- the electrical signals detected by the opto-electronic sensor 8 ' are transmitted via an electrical line 15, for example a copper cable, to the control electronics unit 16 of the espresso machine.
- the control electronics unit 16 are again assigned via lines 17 portioning 18, via which the desired amount of water can be adjusted.
- a solenoid valve (not shown) is opened via the control electronics unit 16, whereby water flows into the working cylinder 4 and the Dosierkolbenzylinder 5 synchronously and thus the two pistons 2, 3 are shifted upward.
- the detected via the sensor 8 and passed on the fiber optic cable 13 signals are converted in the opto-electronic sensor unit 14 into electrical signals which are supplied to the control electronics unit 16 of the espresso machine and upon reaching the previously set via the Portionieraste 18 amount of water is the solenoid valve (not shown) activated, whereby the working piston 2 and the metering piston 3 remain stationary.
- water is introduced into the working cylinder section 14 via the connection 11.
- the piston press machine known per se is provided with a novel control for portioning the desired amount of water, whereby the integration of the traditional piston press machine in electronic systems, especially electronic accounting systems in the catering, is made possible and for the first time on a virtually silent PORT tion unit for coffee press machines Any variable amount of coffee beverage can be automatically filled without mechanically deposited parts are used for it. This also results in the possibility of space-saving design by eliminating the previously necessary for water portioning of coffee press machines mechanical dosing.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Apparatus For Making Beverages (AREA)
- Bakery Products And Manufacturing Methods Therefor (AREA)
- Graft Or Block Polymers (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003205399A AU2003205399A1 (en) | 2002-03-25 | 2003-01-08 | Espresso machine |
EP03702171A EP1487314B1 (de) | 2002-03-25 | 2003-01-08 | Espressomaschine |
DE50303290T DE50303290D1 (de) | 2002-03-25 | 2003-01-08 | Espressomaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA460/2002 | 2002-03-25 | ||
AT0046002A AT411009B (de) | 2002-03-25 | 2002-03-25 | Espressomaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003079875A1 true WO2003079875A1 (de) | 2003-10-02 |
Family
ID=3674555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2003/000003 WO2003079875A1 (de) | 2002-03-25 | 2003-01-08 | Espressomaschine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1487314B1 (de) |
AT (2) | AT411009B (de) |
AU (1) | AU2003205399A1 (de) |
DE (1) | DE50303290D1 (de) |
ES (1) | ES2263950T3 (de) |
WO (1) | WO2003079875A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2811876B1 (de) | 2012-02-08 | 2016-01-06 | WMF Württembergische Metallwarenfabrik AG | Kaffeemaschine sowie verfahren zum betrieb einer solchen kaffeemaschine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010017224A1 (de) * | 2010-06-02 | 2011-12-08 | Bülent Yilmaz | Verfahren zum Steuern und/oder Überwachen des Brühvorganges einer Kaffeemaschine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1654949A1 (de) * | 1966-05-05 | 1971-03-04 | Hagezet Ag | Hydraulisch gesteuerte Kaffeemaschinen-Armatur |
DE1579528B1 (de) | 1965-01-29 | 1971-08-26 | Sacome S A M | Automatische kaffeemaschine zur abgabe unterschiedlicher kaffeemengen |
FR2367275A1 (fr) * | 1976-10-06 | 1978-05-05 | Reneka Sa | Dispositif de controle volumetrique, en particulier d'une dose donnee |
FR2367464A1 (fr) * | 1976-10-14 | 1978-05-12 | Reneka Sa | Dispositif de pre-selection de machines a lixiviation |
EP0177462A1 (de) * | 1984-10-04 | 1986-04-09 | BREVETTI GAGGIA S.p.A. | Dosiervorrichtung für die Ausgabevorrichtung einer Espresso-Kaffeemaschine |
-
2002
- 2002-03-25 AT AT0046002A patent/AT411009B/de not_active IP Right Cessation
-
2003
- 2003-01-08 AT AT03702171T patent/ATE325567T1/de active
- 2003-01-08 DE DE50303290T patent/DE50303290D1/de not_active Expired - Lifetime
- 2003-01-08 ES ES03702171T patent/ES2263950T3/es not_active Expired - Lifetime
- 2003-01-08 AU AU2003205399A patent/AU2003205399A1/en not_active Abandoned
- 2003-01-08 WO PCT/AT2003/000003 patent/WO2003079875A1/de not_active Application Discontinuation
- 2003-01-08 EP EP03702171A patent/EP1487314B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1579528B1 (de) | 1965-01-29 | 1971-08-26 | Sacome S A M | Automatische kaffeemaschine zur abgabe unterschiedlicher kaffeemengen |
DE1654949A1 (de) * | 1966-05-05 | 1971-03-04 | Hagezet Ag | Hydraulisch gesteuerte Kaffeemaschinen-Armatur |
FR2367275A1 (fr) * | 1976-10-06 | 1978-05-05 | Reneka Sa | Dispositif de controle volumetrique, en particulier d'une dose donnee |
FR2367464A1 (fr) * | 1976-10-14 | 1978-05-12 | Reneka Sa | Dispositif de pre-selection de machines a lixiviation |
EP0177462A1 (de) * | 1984-10-04 | 1986-04-09 | BREVETTI GAGGIA S.p.A. | Dosiervorrichtung für die Ausgabevorrichtung einer Espresso-Kaffeemaschine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2811876B1 (de) | 2012-02-08 | 2016-01-06 | WMF Württembergische Metallwarenfabrik AG | Kaffeemaschine sowie verfahren zum betrieb einer solchen kaffeemaschine |
EP2811876B2 (de) † | 2012-02-08 | 2024-02-21 | WMF GmbH | Kaffeemaschine sowie verfahren zum betrieb einer solchen kaffeemaschine |
Also Published As
Publication number | Publication date |
---|---|
AU2003205399A1 (en) | 2003-10-08 |
AT411009B (de) | 2003-09-25 |
ES2263950T3 (es) | 2006-12-16 |
ATE325567T1 (de) | 2006-06-15 |
EP1487314A1 (de) | 2004-12-22 |
ATA4602002A (de) | 2003-02-15 |
DE50303290D1 (de) | 2006-06-14 |
EP1487314B1 (de) | 2006-05-10 |
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