A method for producing a beverage, preferably for roasting tea leaves, and apparatus and grinder for carrying out the method.

Abstract

This invention provides a method for roasting tea to produce a beverage that does not require a long time, from grinding the tea leaves to extraction and filling containers. [Solution] Using a method for roasting tea, tea powder 19 or other powdered crushed tea leaves are transported into a roasting chamber 17, water for the roasting process is added, and the beverage is manufactured by delivering the tea powder 19 through a filling opening 16 located at the cylinder 15, delivering water through a delivery pipeline 23 into the closed roasting chamber 17, and roasting is performed as the first roasting stage, followed by a pause stage for the extracted tea beverage in the roasting chamber 17 for a specific period of time, transporting the roasted beverage to the discharge port, and at least one second roasting stage follows by repeatedly delivering hot water into the roasting chamber 17 through the delivery pipeline 23 with the powder remaining inside, allowing another pause stage for the roasted beverage for a specific residence time in the roasting chamber 17, and similarly transporting the beverage to the discharge port, thereby producing a very flavorful tea beverage in a very efficient way through the roasting process.

Claims

1. A method for producing a beverage, preferably for roasting tea, comprising: transporting ground tea leaves (19) or other powder into a roasting chamber (17); adding water for the roasting process; and transporting the extracted beverage preferably to a discharge port (33), The method for producing the beverage is, - The instructed tea powder (19) is delivered through the filling opening (16) located at the cylinder (15), then compressed, and hot water is delivered into the roasting chamber (17) through the delivery pipeline (23). - The first roasting stage involves roasting, - During a specific period, a pause is in place for the tea beverage extracted in the roasting room (17), - The roasted tea beverage is carried to the discharge port (33), - Subsequently, the hot water is repeatedly delivered into the roasting chamber (17) through the delivery pipeline (23) with the tea powder remaining inside, thereby continuing at least one second roasting stage. - Allowing a pause in the roasted beverage during a specific residence time within the roasting chamber (17), - Next, the beverage is similarly delivered to the outlet. It is done in steps A method characterized by the following:

2. After the roasting and supply of the extracted tea beverage, the roasting chamber (17) is opened, the used tea powder is carried into the water collection container, and then at least one rear flush of washing water is performed into the roasting chamber (17), which is closed again from the discharge port, and the washed water that has been sent in is similarly preferably carried into the water collection container through the opening of the roasting chamber (17). The method according to claim 1, characterized by the above.

3. Preferably, after the rear flushing, a front flushing is performed inside the closed roasting chamber (17) to transport the cleaning water through the roasting chamber, and then it is discharged as wastewater at the outlet. The method according to claim 1 or 2, characterized in that

4. To release the roasted tea liquid into the roasting chamber (17), the water is transported through a second piston (25) formed from a strainer (26') during the rear flushing, and the closed roasting chamber is formed by the second piston (25), a movable cylinder (15) surrounding the second piston (25), and a first piston (20) partially guided within the cylinder (15), the first piston (20) being formed with the water delivery pipeline (23) and movable relative to the second piston (25). The method according to claim 2 or 3, characterized by the features described herein.

5. During the forward flushing, a specific amount of water is delivered into the roasting chamber (17) through the first piston (20) along with the delivery of the roasting water, and then through the second piston (25) which is equipped with or formed as a strainer (26'), and is carried away and removed as wastewater. The method according to claim 3 or 4, characterized in that

6. The duration of each resting stage following each roasting stage is determined to be either the same or different in each case. The method according to any one of claims 1 to 5, characterized in that

7. In each of the at least two roasting stages, in each case, an amount of water sufficient to fill a container (35) such as a teacup at the outlet is delivered into the roasting chamber (17) in two or more partial fillings with interruptions depending on the number of roasting stages, and this continues until a predetermined total volume is reached in the container (35). The method according to any one of claims 1 to 6, characterized in that

8. When the compression of the tea powder in the roasting chamber (17) is carried out at a low pressure and in a controlled manner before and during roasting, this low pressure in this case is approximately equal to atmospheric pressure. The method according to any one of claims 1 to 7, characterized in that

9. During the pause phase, in order to improve the extraction of the beverage, the water remains in the roasting chamber (17), and a pump is used to retrieve the water from the roasting chamber and then return it to the chamber in a circulating manner. The method according to any one of claims 1 to 8, characterized in that

10. A roasting apparatus for performing the method according to any one of claims 1 to 9, comprising an axially movable cylinder (15) having at least one filling opening (16) for tea powder, and two pistons (20, 25) that can move relative to each other within the cylinder and form a closable roasting chamber (17), wherein at least one of the two pistons, the first piston (20), is connected to a delivery line for water, and the other second piston (25) is equipped with a strainer (26') and is fluidly connected to a discharge port (33), and moreover, can transport the tea powder into the roasting chamber (17), and at least the first piston can move at least partially inside the cylinder (15) in the opposite direction to the second piston, in a roasting apparatus, The corresponding control valve (42) in the water delivery pipeline (43) can be operated by the first piston (20), and the corresponding control valve (42) in the pipeline connection (45) for the outlet can be operated by the control unit (40), and the control unit (40) can be used to deliver the powder and hot water in specific amounts into the roasting chamber (17) when the roasting is started, and to appropriately control the roasting process based on a specified time for each of the rest periods of the roasted beverage as detected by the control unit (40). A roasting machine characterized by the following features.

11. During rear flushing, the control unit (40) switches the water delivery control valve (42) so that the second piston (25) can transport the water into the roasting chamber (17) via the rear flushing pipeline (47). The axial movement of the cylinder (15) caused by the control unit (40) can adjust the roasting chamber from a closed to an open position so that the tea powder residue released during rear flushing and the introduced washing water are preferably poured into the water collection container. The roasting apparatus according to claim 10, characterized in that

12. During forward flushing with the roasting chamber (17) closed, the control valves (42, 46) in the hot water delivery pipeline (43) and the pipeline connections (39, 45) from the control unit (40) are opened to allow a specific amount of water through the pistons (20, 25) and preferably to receive it in the water collection container (41). A roasting apparatus according to claim 10 or 11, characterized in that it is a roasting apparatus.

13. Arranged in the hot water delivery pipeline (43) are actuator elements for delivering the water, and preferably several pressure sensors in the roasting chamber (17) for determining the pressure during roasting and transmitting this pressure to the control unit (40) for comparison with a reference value. If deviations occur, the actuator elements can be appropriately controlled to achieve a controlled pressure state in the roasting chamber (17), which is constantly monitored during roasting, and this is particularly suitable for roasting coffee. A roasting apparatus according to any one of claims 10 to 12, characterized in that

14. The volume of the roasting chamber (17) located at the roasting position, the volume of the tea powder to be filled into the roasting chamber (17), and the volume of the water for roasting, as detected by the control unit (40), are specified to have a specific relationship with respect to each other, and the control unit (40) can activate not only the control valve (42) in the water delivery pipeline (43), but also a valve in the passage opening to control the amount of tea powder delivered into at least one filling opening (16) in the cylinder (15), preferably. A roasting apparatus according to any one of claims 10 to 13, characterized in that

15. A grinder for a roasting apparatus according to any one of claims 10 to 14, preferably comprising at least two interacting grinding discs (56, 57), and provided for grinding tea leaves filled in a tea container, wherein preferably one of the grinding discs (56, 57), grinding disc (57), can be rotated by a drive, and the ground material can be guided into a roasting chamber (17) through at least one opening (16) in a cylinder (15), The tea container (51), configured as a funnel shape (52) that tapers downwards, is located within the grinding space (65) and extends from the grinding space (65) to the grinding discs (56, 57). The rotatable grinding disc (57) of the grinding discs (56, 57) is preferably connected to a mixing element (60) that extends upward through the grinding space (65) to the tea container (51) and rotates together with the one grinding disc (57) during grinding. The one grinding disc (57) is used to agitate the tea leaves, or the mixing element (60) is arranged to rotate using a separate drive unit or bearing arrangement provided within the grinding casing (55). A crushing machine characterized by the following features.

16. The mixing element (60) consists of a rotating shaft (61) that extends coaxially with the grinding disk (57) and is connected to the grinding disk (57), and the driving element (62) protrudes and is distributed along the outer circumference of the mixing element (60). The crusher according to claim 15, characterized in that

17. The tea container (51) is provided as a funnel shape (52) that tapers downwards, and a protective cover (53) is provided on the upper side of the tea container (51) that has the effect of restricting the way an employee can reach the inside of the tea container with their fingers when supplying tea leaves. A pulverizer according to claim 15 or 16, characterized in that it is a pulverizer.

18. The interacting grinding discs (56, 57) can be adjusted relative to each other along their axis of rotation by an adjustment mechanism (63, 64) to change the degree of grinding to which these grinding discs cut the material being ground. A crushing machine according to claim 15 or 17, characterized in that it is a crushing machine.

19. A grinding disc for a grinder according to any one of claims 15 to 18, The grinding discs (56, 57) are provided with a plurality of teeth (54) that are aligned substantially radially on their opposing surfaces and configured to be perpendicular to the axis of rotation (A) in this configuration, or their cutting surfaces, when viewed together in cross-section, form a V-shaped inlet, and the teeth (54) are equipped with sharp cutting elements to cut the tea leaves without crushing them. A grinding disc characterized by the following features.

20. The teeth (54), which are aligned almost radially, are arranged in rows at specific distance intervals and are slightly rounded along their own cross-sections. The crushing disc according to claim 19, characterized in that

Images