KR101382254B1 - A duch coffee extracting equipment - Google Patents

Abstract

The present invention relates to a Dutch coffee extracting equipment which respectively comprises a water tank (first tank) and a supplement water tank (second tank), and a check valve and a solenoid valve are installed between the water tank and the supplement water tank and respectively comprises twin timer controllers and a control unit for controlling the valves, so that it always constantly maintain the amount and speed of water falling from the water tank toward a coffee filter thereby uniformly adjusting soaking time and concentration of coffee and manufacturing good quality of Dutch coffee.

Description

Dutch coffee extracting equipment {A duch coffee extracting equipment}

The present invention relates to a Dutch coffee extracting device, and more particularly, to a Dutch coffee extracting device that can produce a good quality Dutch coffee by constantly adjusting the amount and speed of water falling from the water tank toward the coffee filter.

As is well known, the coffee extraction method includes a drip coffee extraction method in which hot water is poured into a filter paper containing coffee to extract coffee liquid, and the coffee liquid is extracted by filling a pot with coffee and passing hot water under high pressure. Espresso coffee extraction is widely used.

The solubility of coffee, the biggest determinant of coffee extraction, is closely related to the degree of roasting of coffee beans and the temperature of the coffee water. Roasting, one of the coffee processing processes, refers to the process of roasting green coffee by applying a certain amount of heat. The weaker roasting, the lower the solubility in water at a specific temperature, and the stronger the roasting, the higher the solubility.

According to the various extraction methods, in order to make the coffee taste the best and maintain the constant taste, various water temperatures, that is, various extraction temperatures, are required to match the roasting strength of the coffee beans. This is due to the change in the dissolution characteristics of coffee components, including caffeine, depending on the degree of powdering.

In recent years, the Dutch coffee extraction method of extracting coffee liquid in a cold state while permeating a small amount of cold water for a long time in a container filled with a large amount of coffee powder is also widely used. Dutch coffee derived from Dutch source is extracted at low temperature with low solubility, and therefore, less caffeine is eluted during the same extraction time compared to high temperature extraction. However, the amount of caffeine is gradually increased as the extraction time is increased while reducing the amount of cold water permeation per unit time compared to the equivalent amount of coffee.

Like the widely commercialized espresso machines, Dutch coffee also mechanizes the process, allowing you to vary the caffeine content, taste and aroma as needed, even when commercial mass production has a uniform taste and aroma, or even a non-uniform taste and aroma. There is an increasing amount of research to implement mechanical extraction control processes.

On the other hand, Figure 1 is a view showing the configuration of the Dutch coffee extraction device according to the prior art.

Referring to FIG. 1, the Dutch coffee extracting apparatus according to the related art has an injection hole 130 formed at an upper end of the main body 100 in which cold water is stored, and an discharge hole 140 formed at a lower end thereof. The upper side of the control valve 120 is attached, the bottom is installed a separate basket 110 is stored coffee.

The method of extracting Duffy coffee using the conventional Dutch coffee extraction device configured as described above will be briefly described as follows.

First, after storing the coffee inside the basket 110, poured cold water or bottled water at room temperature into the inlet 130 of the upper end of the main body 100 and stores it in the main body 100. Next, when the control valve 120 is opened finely, cold water or bottled water at room temperature drops into the basket 110 in which the coffee is stored, and the raw water is passed through the coffee inside the basket 110. Extracted. In other words, the stock solution, which has aroma and taste of coffee while passing through a very hard and dense layer of stored coffee particles, is continuously dropped drop by drop.

However, as described above, since the control valve 120 is finely opened to control the amount and speed of water falling, the water once dropped to the top of the basket 110 passes through the coffee inside the basket 110, and extraction is impossible. Since the undiluted solution is extracted as it is, it is difficult to control the rate of extraction of the undiluted coffee solution while passing through the inside of the basket 110. In addition, the water passing through the control valve 120 of the main body 100 does not stay within the basket 110 for a desired time, there is a problem that can not control the soaking time and concentration of the coffee.

On the other hand, there is a patent document 4 as a prior art for solving such a problem. The patent document 4 is usually installed between the upper cold water container and the coffee powder container of the middle portion is additionally installed between the intermediate container and the lower coffee liquid container, and as a result, the amount of extraction liquid passing through the interior of the coffee powder container is desired. It is mechanically adjusted to a level.

However, Patent Document 4 having the above characteristics also contains the above conventional problems as it is.

That is, Patent Document 4, like the prior art, by manually opening the control valve finely to control the amount and speed of the falling water, specifically, the water stored in the water tank is finely controlled using a hand valve (control valve) Therefore, when the water falls down due to gravity, when the amount of water is large, the falling speed drops quickly, but as the amount of water decreases, the phenomenon occurs that the water drops slowly and sometimes the water stops. There is this. As a result, the amount and speed of the water falling toward the coffee filter is not uniform according to the amount of water stored in the water tank, and thus there is a problem in that it is impossible to produce high quality Dutch coffee.

[Patent Document 1] Publication No. 10-2012-0078180 (Invention name: Hydraulic pressure stabilizer of the Dutch coffee machine. Publication date: July 10, 2012) [Patent 2] Publication No. 10-2013-0014693 (Invention name: Dutch coffee extractor equipped with a temperature control and sterilization system. Publication date: February 08, 2013) [Patent 3] Publication No. 10-2013-0019466 (Name of the Invention: Hand Drip Coffee Machine. Publication Date: February 27, 2013) [Patent 4] Published Patent Publication No. 10-2012-0106406 (Invention name: Dutch appliance and a method for manufacturing Dutch coffee using the same. Publication date: September 26, 2012)

The present invention is to solve the problems of the prior art as described above, it is an object of the present invention to provide a Dutch coffee extracting device that can produce a good quality Dutch coffee by constantly adjusting the amount and speed of water falling toward the coffee filter. .

In addition, an object of the present invention is to provide a Dutch coffee extracting device that can be prepared in any concentration of Dutch coffee according to the taste of the consumer.

The present invention provides a first tank for storing water, a coffee filter for storing coffee and dripping water supplied from the first tank, a coffee tank containing Dutch coffee extracted from the coffee filter, and the first tank. A second tank disposed between the coffee filters and allowing the water supplied from the first tank to be stored and maintaining a constant medium pressure; and a solenoid valve installed at the second tank to control the amount and speed of the water falling toward the Dutch filter. And a twin-timer controller for controlling the opening / closing operation of the solenoid valve.

According to the present invention, a check valve and a solenoid valve are installed between the water tank and the coffee filter, and a twin-timer controller and a control unit capable of controlling these valves improve the amount and speed of water falling from the water tank toward the coffee filter. By making it possible to uniformly control the soaking time and concentration of coffee. Accordingly, when the Dutch coffee is manufactured by the extracting apparatus of the present invention, there is a synergistic effect of extracting a good quality Dutch coffee.

In addition, the present invention can not only extract the concentration of Dutch coffee according to the taste of the consumer by installing a separate yield timer, but also can determine the amount and extraction time of the water that can produce the best taste when extracting the Dutch coffee There is an advantage in that it can produce a Dutch coffee with the highest quality.

1 is a view showing the configuration of the Dutch coffee extraction device according to the prior art.
Figure 2 is a view showing the configuration of the Dutch coffee extracting apparatus according to an embodiment of the present invention.
Figure 3 is an exploded view showing the configuration of the Dutch coffee extraction device shown in FIG.
4 is a cross-sectional view showing the main components of the Dutch coffee extraction device shown in FIG.
5 is a view showing the circuit configuration of the Dutch coffee extraction device shown in FIG.
6 is a view showing a control method of the Dutch coffee extraction device shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following detailed description, exemplary embodiments of the present invention will be described in order to accomplish the above-mentioned technical problems. And other embodiments which may be presented by the present invention are replaced by descriptions in the constitution of the present invention.

According to the present invention, a water tank (first tank) in which water is stored and an auxiliary water tank (second tank) for maintaining a constant medium pressure are respectively provided, and a check valve and a solenoid valve are installed between the water tank and the auxiliary water tank. By configuring the twin-timer controller and the controller to control the valves, respectively, the amount and speed of the water falling from the water tank toward the coffee filter can be improved and maintained constant so that the soaking time and concentration of the coffee can be uniformly adjusted. It is intended to implement a Dutch coffee extracting device capable of manufacturing Dutch coffee.

In addition, the present invention by installing a separate yield timer to check the time and the amount of water and the amount of coffee and the extraction of the Dutch coffee to enable the manufacture of Dutch coffee according to the consumer's taste as well as the best quality Dutch coffee To implement a Dutch coffee extraction device that can be produced.

To this end, the configuration of a twin-timer controller and a solenoid valve and a control operation for controlling them must be specifically disclosed so that the amount and speed of water falling from the water tank to the coffee filter can be kept constant at all times.

At this time, the twin-timer controller controls the amount of water and the rate of falling by using two timers, specifically, by controlling the opening or closing of the solenoid valve using two timers, the amount and speed of water falling toward the coffee filter is always constant. To keep it alive. However, in the present invention, when configuring the twin timer controller, only one timer is configured without configuring two timers to control whether the solenoid valve is opened or closed so that the amount of water and the falling speed can be kept constant at all times. It is. That is, when using one timer, the solenoid valve can be opened during the first set time and the solenoid valve can be closed during the second set time. You can change it arbitrarily. When the twin timer controller is configured as described above, it is possible to control whether the solenoid valve is opened or closed by using one timer. In the present invention, the twin timer controller is configured by using two timers. Speed), and in particular, to adjust the concentration of the Dutch coffee according to the consumer's preference, which will be described in detail below.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

2 is a view showing the configuration of the Dutch coffee extracting apparatus according to an embodiment of the present invention. Dutch coffee extracting apparatus according to the present invention is installed in a long horizontal direction, consisting of a first tank 10, a second tank 30, a coffee filter 50, a coffee tank 60 from the top, and support them It comprises a fixing ring body 36, the bracket 44, the frame 52, the pedestal 62 for fixing. At this time, the upper rail 46 and the lower rail 54 is installed in the frame 52, which serves to adjust the height of the first tank 10, the second tank 30 and the coffee filter 50. .

Referring to FIG. 2, the first tank 10 is a tank for storing water (for example, cold water or hot water), and a connector 16 is coupled to a lower end thereof. The first tank 10 is fixed by the fixing ring body 36 installed in the frame 52, the connecting member 16 coupled to the first tank 10 of the bracket 44 installed in the frame 52 It sits on the top. The second tank 30 is coupled to the bottom surface of the connecting body 16 and fitted into the bracket 44 to be fixed. That is, the lower end of the second tank 30, specifically, the portion in which the nozzle 34 is installed is inserted into the coffee filter 50. At this time, the bracket 44 is coupled to the upper rail 46 installed in the frame 52, and moves in the up / down direction along the upper rail 46. As the bracket 44 moves, the first and second tanks 10 and 30 also move in the up and down directions. A lever 48 is installed at one end of the bracket 44, and the lever 48 serves to firmly fix the bracket 44 coupled to the upper rail 46.

The coffee filter 50 is filled with a conventional coffee and fixed to the fixing ring body 58 installed in the frame 52, the fixing ring body 58 is coupled to the lower rail 54 to move in the up / down direction. At this time, the lower rail 54 is installed in the frame 52, the fixing ring body 58 coupled to the lower rail 54 is the upper / along the lower rail 54, as in the operation of the bracket 44 described above Move downward. At this time, the lever 56 is installed at one end of the fixing ring body 58, the lever 56 serves to fix the fixing ring body 58 coupled to the lower rail (54).

A coffee tank 60 is installed at the lower end of the coffee filter 50, and a general pedestal 62 is placed at the lower end of the coffee tank 60. At this time, the coffee tank 60 is the Dutch coffee is contained. One side end of the pedestal 62 is fixed to the frame 52 formed long in the horizontal direction, the coffee tank 60 is placed in the center.

On the other hand, Figure 3 and Figure 4 is a view showing in detail the configuration of the Dutch coffee extracting apparatus according to an embodiment of the present invention.

3 and 4, the check valve 14 is assembled to the space portion 16a of the connector 16, the cover 12 is fixed to the upper end of the check valve 14, The cover 12 is located at the center of the first tank 10. In this case, the cover 12 is opened / closed when the check valve 14 operates in the up / down direction, specifically, the first tank 10 and the connector 16 are coupled to each other in a first state. The water stored in the tank 10 serves to block or open the inflow into the space portion 16a of the connector 16.

The second tank 30 as described above is a secondary tank in which water supplied from the first tank 10 is stored, and serves to maintain a constant medium pressure at all times. A receiving part 32 is formed at the center of the second tank 30, and water is stored in the receiving part 32. The receiving portion 32 of the second tank 30 stores a much smaller amount of water than the water stored in the first tank 10, which means that the water supplied from the first tank 10 is directly supplied to the coffee filter 50. This is to prevent it from entering into) and to maintain a constant medium pressure at all times. That is, when water supplied from the first tank 10 flows straight into the coffee filter 50, the second tank may not be able to constantly control the amount and speed of water falling toward the coffee filter 50 by the medium pressure of water. If 30 is installed below the first tank 10, this problem can be solved.

In detail, the amount of water stored in the first tank 10 decreases with time. In this case, the amount of water is increased and the speed is increased because the gravity of the water initially supplied is large due to the gravity falling down due to the high pressure. As the water pressure decreases and as time goes by, the gravity of the water decreases and the gravity falls downward, so the amount of water decreases and the speed decreases. As a result, when the water stored in the first tank 10 continues to decrease, the water becomes the first tank. In the state remaining in (10) is no longer dropped toward the coffee filter 50. Therefore, in the present invention, in order to solve this problem, the second tank 30 is installed between the first tank 10 and the coffee filter 50, and the solenoid valve 26 and the twin timer controller 38 are installed. will be.

On the other hand, the receiving portion 32 of the above-described second tank 30 is a place where the water supplied from the first tank 10 (that is, water introduced through the check valve 14) is stored as shown in FIG. At the lower end, a fixed body 22 is installed. A shaft 18 is installed at the center of the fixture 22, a float sensor 20 is fitted to the shaft 18, and a flow path 24 is formed at one side of the shaft 18. The flow passage 24 serves as a passage for supplying water stored in the accommodating part 32 to the coffee filter 50, and the solenoid valve 26 is connected to the flow passage 24 by a hose 28a. This configuration will be described in detail below.

The float sensor 20 detects the level of water stored in the accommodating part 32 while moving up and down along the shaft 18. That is, the float sensor 20 is operated in the same principle as the usual floats, when the water level of the water stored in the receiving portion 32 of the second tank 30 is full (up): And when there is no water in the receiving portion 32 is lowered. Specifically, the float sensor 20 detects when the water level of the water stored in the accommodating part 32 of the second tank 2 is full and transmits it to the control part 74 and further provides water to the accommodating part 32. If no, it detects it and transmits it to the control unit 74. At this time, the control unit 74 controls the power supply unit 72 and the yield timer 76 according to the signal input from the float sensor 20, which will be easily understood by the detailed description of FIG.

Inside the second water tank 30 described above, a solenoid valve 26 is installed in a space below the accommodating part 32 as shown in FIG. 4, and the solenoid valve 26 is a hose 28a, 28b. Are connected to the flow path 24 and the nozzle 34 of the fixed body 22, respectively. The solenoid valve 26 configured as described above serves to supply or block water stored in the accommodation portion 32 of the second tank 30 toward the nozzle 34 according to the control operation of the controller 74. That is, the solenoid valve 26 performs a second “on / off” operation according to the time set by the twin-timer controller 38 (preferably, setting the opening / closing time of the solenoid valve). The water stored in the receiving portion 32 of the tank 30 is supplied to the coffee filter 50. At this time, the solenoid valve 26 is 'on / off' operation according to the operation of the above-described float sensor 20, specifically, when the float sensor 20 is raised, the solenoid valve 26 is 'open' 'open', the solenoid valve 26 is closed when the float sensor 20 is lowered. The opening / closing operation of the solenoid valve 26 is performed by the controller 74 performing a control operation in response to a signal transmitted from the float sensor 20.

On the other hand, in the Dutch coffee extracting apparatus of the present invention configured as described above, the twin timer controller 38 is installed at the rear end of the fixed ring body (36). As described above, the twin-timer controller 38 controls the opening and closing operation of the solenoid valve 26, which will be easily understood by the detailed description of FIG.

As shown in FIG. 5, the twin timer controller 38 is composed of two timers. Preferably, the first timer 40 and the solenoid valve which set the time when the solenoid valve 26 is opened are shown. It consists of the 2nd timer 42 which sets the time which 26 is closed. At this time, the twin-timer controller 38 may control the opening and closing time of the solenoid valve 26 by using a single timer as shown above. Hereinafter, a configuration and method for controlling the opening and closing time of the solenoid valve 26 using two timers 40 and 42 will be described in detail.

The first timer 40 is typically composed of a rotary switch, and is a timer for setting a time when the solenoid valve 26 is 'open'. The second timer 40 is also configured as a rotary switch type and is a timer for setting the time when the solenoid valve 26 is 'closed'. This will be described with an example. If 5 seconds is set using the first timer 40 and 60 seconds is set using the second timer 42, the solenoid valve 26 is 'open' for 5 seconds and then 5 seconds is set. When it passes, the solenoid valve 26 is closed and remains closed for 60 seconds. After 60 seconds, the solenoid valve 26 is 'open' and remains open for 5 seconds, and then closes after 5 seconds. In this manner, the solenoid valve 26 is repeatedly repeated by the first timer 40 to remain open for 5 seconds and close for 60 seconds. In this case, when the solenoid valve 26 receives a signal indicating that there is no water from the float sensor 20 to the accommodating part 32 of the second tank 30 in the process of repeating the above operation, the controller 74 controls the controller. The solenoid valve 26 is closed by the control operation of 74.

On the other hand, the control unit 74 serves to control the opening and closing operation of the solenoid valve 26 in accordance with the signal input from the float sensor 20 as described above, and according to the time set by the twin-timer controller 28. do. The control method of the controller 74 will be easily understood by the detailed description of FIG. 6 to be described later.

On the other hand, the yield timer 76 is configured to be separately installed in the Dutch coffee extracting apparatus of the present invention connected to the control unit 74 to perform the operation, so as to check the concentration of the coffee according to the taste of the consumer This timer allows you to check the amount and speed of water to brew the best quality Dutch coffee. That is, the yield timer 76 is a timer that checks how long it takes to extract the Dutch coffee while the water contained in the first water tank 10 passes through the coffee filter 50. By checking the brewing time, you can check the conditions (the amount of water and the brewing time) to make the best quality Dutch coffee, and also the conditions under which you can extract the Dutch coffee according to your taste. The coffee tastes duffy when the water comes down to the coffee filter quickly and gives a dark and bitter taste when the water comes down slowly. Specifically, the yield timer 76 is transmitted from the float sensor 20. According to the signal to be transmitted, that is, when the signal to the control unit 74 that there is no water in the receiving portion 32 of the second water tank 30, the control unit 74 stops the yield timer 76. At this time, the yield timer 76 starts to operate when the receiving portion 32 of the second tank 30 is filled with water.

Finally, the power switch 70 is a switch for supplying or cutting off power to the Dutch coffee extracting apparatus of the present invention, the power supply unit 72 is the Dutch coffee extracting apparatus of the present invention according to the switching of the power switch 70 Power on

Hereinafter, a method (preferably, a control method of the control unit 74 shown in FIG. 5) of manufacturing the Dutch coffee using the Dutch coffee extracting apparatus of the present invention configured as described above will be described in detail. I would like to.

As shown in FIG. 6, when the power switch 70 is switched on in step S100, the power supply unit 72 supplies power to the Dutch coffee extracting device of the present invention, thereby extracting Dutch coffee. You are ready to go. After setting the extraction method of the Dutch coffee using the twin timer controller 38 in step S102, specifically, the time that the solenoid valve 26 is opened using the first timer 40 (for example, For example, the 5 second setting is set, and then the second timer 42 is used to set the time when the solenoid valve 26 is closed (eg, 60 second setting).

Next, the water contained in the first tank 10 is supplied to the accommodating part 32 of the second tank 30 through the check valve 14, and when the water is filled in the accommodating part 32, the float sensor ( 20 rises along shaft 18. Subsequently, when the float sensor 20 is sensed in step S104, preferably, the controller 74 indicates that the signal from the float sensor 20 indicates that water is filled in the accommodating part 32 of the second tank 30 in step S106. If input, the controller 74 opens the solenoid valve 26 in step S108 and simultaneously operates the yield timer 76 in step S110. The yield timer 76 starts counting, and the water contained in the container 32 is supplied toward the coffee filter 50.

Thereafter, the controller 74 determines whether the time set by the first timer 40 has elapsed in step S112. If it is determined in step S112 that the set time (for example, 5 seconds) has elapsed, the control unit 74 closes the solenoid valve 26 in step S114. At this time, if it is determined in step S112 that the set time (5 seconds) has not elapsed, the controller 74 continues to open the solenoid valve 26.

Next, the controller 74 determines whether the time set by the second timer 42 has elapsed in step S116. If it is determined in step S116 that the set time (for example, 60 seconds) has elapsed, the controller 74 opens the solenoid valve 26 again as in step S108 described above.

As such, the controller 74 repeats the operation of opening or closing the solenoid valve 26 while continuously performing the above-described steps S108 and S116. That is, the solenoid valve 26 is open for 5 seconds and closed for 60 seconds.

Then, when the water stored in the receiving portion 32 of the second tank 30 gradually disappears in the process of performing the operation as described above, specifically, the water contained in the first tank 10 is reduced, eventually When all the water in the first tank 10 is exhausted and the water stored in the receiving portion 32 of the second tank 30 gradually decreases, the float sensor 20 moves downward along the shaft 18. .

According to this operation, when there is no water in the accommodating part 32 of the second tank 30, the float sensor 20 causes the accommodating part 32 to transmit a signal indicating that water is empty to the controller 74. (Step S106)

Thereafter, when the controller 74 determines that there is no water in the accommodating part 32 of the second tank 30 in step S118, the controller 74 closes the solenoid valve 26 in step S120 and at the same time the yield timer 76. Stop). Next, the control unit 74 by turning off the power (off) in step S124, the Dutch coffee extraction process is completed. At this time, the yield timer 76 is recorded in the Dutch coffee extraction time.

By extracting the Dutch coffee in this way, not only the soaking time and concentration of the coffee can be maintained uniformly, but also the Dutch coffee can be selectively extracted according to the tastes of consumers and the best quality Dutch coffee can be extracted.

10: first tank 14: check valve
16: connector 20: float sensor
22: fixed body 24: euro
26: solenoid valve 30: second tank
32: accommodating part 34: nozzle
38: twin timer controller 40: first timer
42: second timer 50: coffee filter
60: coffee tank 70: power switch
74: control unit 76: yield timer

Claims (6)

delete delete In a typical Dutch coffee extracting device comprising a first tank for storing water, a coffee filter for storing coffee and dripping water supplied from the first tank, and a coffee tank containing Dutch coffee extracted from the coffee filter. ,
A second tank installed between the first tank and the coffee filter and storing water supplied from the first tank and maintaining a constant medium pressure;
A solenoid valve installed in the second tank, the solenoid valve controlling an amount and a speed of water falling toward the coffee filter;
Dutch coffee extraction device further comprises a twin-timer controller for controlling the opening / closing operation of the solenoid valve.
The method of claim 3,
The twin timer controller,
A first timer for setting a time when the solenoid valve is open;
Dutch coffee extracting device, characterized in that it comprises a second timer for setting the time the solenoid valve is closed.
The method according to claim 3 or 4,
The second tank is provided with a receiving portion for storing water, the receiving portion is a Dutch coffee extraction device, characterized in that the float sensor for detecting the water level of the water stored in the receiving portion is installed.
6. The method of claim 5,
The Dutch coffee extracting device, further comprising a yield timer operating according to a detection signal of the float sensor and recording a time for extracting the Dutch coffee.

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