Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TURKISH COFFEE BREWING METHOD WITH CAPACITIVE SENSOR AND THE MACHINE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/018057
Kind Code:
A2
Abstract:
Present invention relates to a Turkish coffee brewing method with Turkish coffee machine (0). Said method comprises the steps of measurement of initial coffee-water mixture level (Mix0) with at least one capacitive sensor (4), calculation of target coffee-water mixture level (MixT) with initial coffe-water mixture level (Mix0), measurement of coffee-water mixture level (MixI) through brewing process with at least one capacitive sensor and measurement of whether the coffee water mixture reached the boiling point with at least one capacitive sensor to determine the boiling information (TB), determination of resistor power rating coefficient (λ) according to coffee-water mixture level (MixI) and the boiling information (TB), termination of brewing process when target coffee-water mixture level (MixT) is measured.

Inventors:
BALLIKAYA MELIH (TR)
Application Number:
PCT/TR2019/050547
Publication Date:
January 23, 2020
Filing Date:
July 09, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SMARTE TEKNOLOJI VE ENERJI SAN TIC A S (TR)
International Classes:
A47J31/00; A47G19/14; A47J31/40
Foreign References:
TR201615850A22016-11-07
EP2700338A12014-02-26
Other References:
See also references of EP 3678520A4
Download PDF:
Claims:
CLAIMS

1. A Turkish coffee brewing method in a Turkish coffee machine (0) wherein comprises the following steps:

i. measurement of initial coffee-water mixture level (Mixo) with at least one capacitive sensor (4)

ii. calculation of target coffee-water mixture level (Mίct) with initial coffe-water mixture level (Mixo)

iii. measurement of coffee-water mixture level (Mixi) through brewing process with at least one capacitive sensor and measurement of whether the coffee water mixture reached the boiling point with at least one capacitive sensor to determine the boiling information (TB).

iv. determination of resistor power rating coefficient (l) according to coffee- water mixture level (Mixi) and the boiling information (TB).

v. termination of brewing process when target coffee-water mixture level (Mίct) is measured

2. A Turkish coffee brewing method according to claim 1 wherein resistor power rating coefficient (l) ranges from 8 watt/ml to 16 watt/ml.

3. A Turkish coffee brewing method according to claim 1 wherein resistor power rating coefficient (l) ranges from 5 watt/ml to 8 watt/ml.

4. A Turkish coffee brewing method according to claim 1 wherein resistor power rating coefficient (l) ranges from 0 watt/ml to 5 watt/ml.

5. A Turkish coffee brewing method according to claim 2 wherein resistor power rating ranges from 30 watt to 350 watt.

6. A Turkish coffee brewing method according to claim 5 wherein resistor power rating ranges from 30 watt to 120 watt.

7. A Turkish coffee brewing method according to claim 3 wherein resistor power rating ranges from 50 watt to 700 watt.

8. A Turkish coffee brewing method according to claim 7 wherein resistor power rating ranges from 50 watt to 250 watt.

9. A Turkish coffee brewing method according to claim 4 wherein resistor power rating ranges from 70 watt to 950 watt.

10. A Turkish coffee brewing method according to claim 9 wherein resistor power rating ranges from 70 watt to 450 watt.

11. A Turkish coffee machine (0) comprising a machine body (1), comprising a machine body (1), a chamber (5) constituted in machine body (1), a pot (3) placed in the chamber (5) wherein comprises at least one capacitive sensor (4) placed in the machine body (1) and faced towards to chamber (5) and means adapted to execute the steps of the method of claim 1. 12. A Turkish coffee machine (0) according to claim 11, wherein further comprises conductive materials which forms faraday cage.

Description:
TURKISH COFFEE BREWING METHOD WITH CAPACITIVE SENSOR and the

MACHINE THEREOF

Description

Technical Field of the Invention Present invention relates to a Turkish coffee brewing method with capacitive sensor and the machine thereof.

Background of the Invention

Developing a coffee machine especially designed for preparing a special coffee such as Turkish coffee is a difficult task both technically and economically. Turkish coffee brewing method disclosed in the patent application TR 2009/04257, senses whether the temperature of the coffee mixture is close to the boiling point by detecting the sharp decrease in the temperature increase rate. Brewing ends when the total energy limit is exceeded, the total energy is proportional with the amount of the coffee mixture. This method controls and detects the temperature of the mixture in the pot so that decides whether the coffee is ready according to the reaction of the coffee mixture to temperature in time. However, it is not possible to determine the brewing point of a mixture consisting of sugar, coffee and water by employing a temperature sensor. Boiling point control is not adequate for Turkish coffee brewing method because Turkish coffee method determines that the coffee is ready by the foam amount in the coffee water mixture. Moreover, calculating the total energy to be transferred and deciding that the coffee is ready when this calculated energy limit is reached is not the right approach since it doesn’t consider the amount of the foam in the coffee mixture. Furthermore, the water level is also determined by the change in temperature increase. However, this measurement might change due to the density of the ingredients in the coffee mixture, it is highly possible that this measurement returns misleading results.

Another issue to be mentioned is that the sensors employed in present methods do not work properly due to external factors. As well as every brewing does not end with the same taste and consistency because coffee machine sensors are effected by external factors and parasites, in some cases the brewing also fails. Most present methods in art that employs sensors or sensor clusters, have offered solutions to prevent inaccurate measurements due to external factors. For instance, in coffee machines which employs infrared sensors, it is necessary to prevent any light entrance to the pot interior. Therefore, prior to brewing process, the pot is moved upwards in the chamber with a mechanical system so that space between the pot and the upper part of the chamber is eliminated. However mechanical solutions as such remain inadequate for coffee machines which employs sensors.

Brief Description of Drawings

Figure 1 is a flowchart for Turkish coffee brewing method with a Turkish coffee machine (0)

Figure 2 illustrates a Turkish coffee machine (0) of the present invention according to one of the embodiments of the present invention.

Reference Signs List

0. Turkish coffee machine

1. Machine body

2. Brewing unit 3. Pot

4. At least one capacitive sensor

5. Chamber

6. Connector

Detailed Descrition of Invention Present invention relates to a Turkish coffee brewing method with Turkish coffee machine (0). Said method comprises the following steps. i. measurement of initial coffee-water mixture level (Mixo) with at least one capacitive sensor (4)

ii. calculation of target coffee-water mixture level (Mίct) with initial coffee- water mixture level (Mixo)

iii. measurement of coffee-water mixture level (Mixi) through brewing process with at least one capacitive sensor and measurement of whether the coffee water mixture reached the boiling point with at least one capacitive sensor to determine the boiling information (TB). IV. Determination of resistor power rating coefficient (l) according to coffee- water mixture level (Mixi) and the boiling information (TB).

v. Termination of brewing process when target coffee- water mixture level (Mίct) is measured ln another aspect, the present invention relates to a Turkish coffee machine (0) comprising a machine body (1), a chamber (5) constituted in machine body (1), a pot (3) placed in the chamber (5). Said Turkish coffee machine (0) comprises at least one capacitive sensor (4) located in machine body (1) and faces towards the chamber (5) and means adapted for carrying out the steps of the method disclosed above. ln a preferred embodiment of the invention, said at least one capacitive sensor (4) comprised by the said Turkish coffee machine (0) detects whether the pot (3) is placed in the chamber (5) or not. lnitial coffee water mixture level (Mixo) in the pot (3) is measured by the said at least one capacitive sensor (4).

Measured initial coffee-water mixture level (Mixo) may be transmitted such as for example to a microprocessor. Said transmission may be done by a wireless communication unit or a receiver. Microprocessor calculates the target coffee-water mixture level (Mίct) with initial coffee-water mixture level (Mixo). Since Turkish coffee is a type of coffee in which its brewing understood from the foam level, here initial coffee- water mixture level (Mixo) will be always at a smaller value then the target coffee-water mixture level (Mίct).

Coffee-water mixture level (Mixi) has being measured through brewing process with the said at least one capacitive sensor (4). lt has also being measured through brewing process whether the coffee water mixture reached the boiling point with at least one capacitive sensor to determine the boiling information (TB). A plurality of coffee water mixture level (Mixi) and a plurality of boiling information (TB) have continuously being transmitted to a microprocessor. Microprocessor determines the suitable resistor power rating coefficient (l) according to A plurality of coffee water mixture level (Mixi) and a plurality of boiling information (TB). ln an embodiment of the present invention if coffee water mixture level (Mixi) is not equal to the target coffee-water mixture level (Mίct) and boiling point has been reached according to the boiling information (TB), microprocessor decreases the resistor power rating coefficient (l) accordingly and brewing process continues. Thus, a longer brewing process is ensured. ln an embodiment of the present invention if coffee water mixture level (Mixi) is not equal to the target coffee-water mixture level (Mίct) and boiling point has not been reached according to the boiling information (TB), brewing process continues without any alteration in the resistor power rating coefficient (l). ln another embodiment of the present invention if coffee water mixture level (Mixi) is equal to the target coffee-water mixture level (Mίct), the microprocessor terminates brewing process. Said method of the present invention is summarised in flowchart of Figure 1. ln a preferred embodiment of the present invention, after microprocessor terminates the brewing process, it may initiate the brewing process for a second time. So that traditional Turkish coffee brewing method known as double brewing is ensured.

Here the term“resistor power rating coefficient” as used herein means a value that is required for coffee-water mixture to be brewed consistently. Microprocessor enables the coffee to be brewed consistently with the resistor power rating which corresponds to resistor power rating coefficient (l). The relation between resistor power rating coefficient (l) and resistor power rating can be formulated as follows;

Resistor power rating (watt) / coffee water mixture level (ml) = resistor power rating coefficient l (watt/ml)

Another issue to be considered is that the resistor power rating coefficient (l) will be applied through the brewing time. The term“brewing time” used herein means the time elapsed to achieve target coffee water mixture level (Mίct) from initial coffee-water mixture level (Mixo). The resistor power rating coefficient (l) determined within the scope of the present invention can be used to brew Turkish coffee in two alternative ways; normal mode and slow mode. Table 1 presents the resistor power rating ranges corresponding to the resistor power rating coefficient (l) ranges which are suitable to brew Turkish coffee in normal mode and slow mode. Values of Table 1 had been calculated according to traditional (manually) Turkish coffee brewing methods. Table 1 the resistor power rating ranges corresponding to the resistor power rating coefficient (l) ranges which are used in normal brewing and slow brewing.

Values of Table 1 will be stored in the said microprocessor or a memory unit. Therefore, in a preferred embodiment of the present invention, in the method of the present invention the resistor power rating coefficient (l) ranges from 8 watt/ml to 16 watt/ml. ln another preferred embodiment of the present invention, in the method of the present invention the resistor power rating coefficient (l) ranges from 5 watt/ml to 8 watt/ml. ln another preferred embodiment of the present invention, in the method of the present invention the resistor power rating coefficient (l) ranges from 0 watt/ml to 5 watt/ml.

The resistor power rating ranges corresponding to the resistor power rating coefficient (l) ranges are different for normal brewing and slow brewing.

Therefore, in a preferred embodiment of the present invention, when the resistor power rating coefficient (l) ranges from 8 watt/ml to 16 watt/ml, the resistor power rating ranges from 30 watt to 350 watt. The resistor power rating more preferably ranges from 30 watt to 120 watt. ln another preferred embodiment of the present invention, when the resistor power rating coefficient (l) ranges from 5 watt/ml to 8 watt/ml, the resistor power rating ranges from 50 watt to 700 watt. The resistor power rating more preferably ranges from 50 watt to 250 watt. ln another preferred embodiment of the present invention, when the resistor power rating coefficient (l) ranges from 0 watt/ml to 5 watt/ml, the resistor power rating ranges from 70 watt to 950 watt. The resistor power rating more preferably ranges from 70 watt to 450 watt. ln an embodiment of the present invention, water amount that is required to brew Turkish coffee according to value predetermined by the user can be automatically filled to the pot (3). ln this embodiment Turkish coffee machine (0); may comprise a water pump, a water flow sensor, a water chamber ln this embodiment if a filled pot (3) placed in the chamber (5), initial coffee-water mixture level (Mixo) measured by at least one capacitive sensor (4). lt can be calculated whether the measured initial coffee-water mixture level (Mixo) is suitable for the value predetermined by the user ln case of need, Turkish coffee machine (0) can fill the pot (3) automatically from the water chamber with the help of the water pump ln another embodiment, if a filled pot (3) placed in the chamber, initial coffee-water mixture level (Mixo) measured by at least one capacitive sensor (4) and for example a maximum level which is predetermined value can be compared to the initial coffee-water mixture level (Mixo). lf the initial coffee-water mixture level (Mixo) is over the maximum level, the Turkish coffee machine (0) may not initiate the brewing process. ln another embodiment of the present invention, user fill coffee water mixture to the pot (3) manually lnitial coffee water mixture (Mixo) measured by at least one capacitive sensor (4). So that, for example it can be known whether the maximum level is exceeded or not. lf the initial coffee-water mixture level (Mixo) is over the maximum level, the Turkish coffee machine (0) may not initiate the brewing process. ln a preferred embodiment of the invention, at least one capacitive sensor which is placed in the machine body (1) and face towards to chamber (5) in the Turkish coffee machine (0), is also placed as facing to the top of the pot (3). ln another preferred embodiment of the invention said at least one capacitive sensor (4) is placed as facing to the body of the pot (3). Turkish coffee machine (0) of the present invention may further comprise a brewing unit (2). Brewing unit (2) can be controlled accorded ding to the data calculated by the microprocessor. Brewing unit (2) is preferably a long life heater. Said brewing unit (2) is preferably is placed in the pot (3) base.

Turkish coffee machine (0) of the present invention may further comprise a connector (6). Said connector (6) is preferably placed in the base of the chamber (5). Connector provides the connection and the energy transmission between the Turkish coffee machine (0) and pot (3). ln a preferred embodiment of the invention, Turkish coffee machine of the invention (0) further comprise conductive materials which form a faraday cage. Said conductive materials can be composed of wires and plates. Said conductive material is a metal, preferably a copper. Machine body (1), pot (3) or chamber (5) can be covered by conductive material in combination or separately. So that a faraday cage can be formed around the open areas of the capacitive sensor that are susceptible to external parasites. Consequently, the measurement of the said sensor become more sensitive and independent from the external factors.