KR20170110916A - Dutch Coffee Maker - Google Patents

Abstract

A Dutch coffee extracting apparatus is disclosed. The present invention provides a Dutch coffee extracting apparatus comprising a water supply unit, an extracting unit, a storage unit, an extracting unit water level sensor, a valve unit, and a valve control unit. The valve unit is connected to a water supply pipe of the water supply unit, The extracting unit water level sensor is installed to correspond to a predetermined height inside the extracting unit to detect when the height of the water in the extracting unit reaches a predetermined height, The valve control unit controls the valve unit to be locked when the water level of the extraction unit reaches a predetermined height in response to the extraction unit level detection sensor.

Description

Dutch Coffee Maker}

The present invention relates to a Dutch coffee extracting apparatus. And more particularly to a Dutch coffee extracting apparatus capable of controlling the amount of drip from outside according to the preference of a user and preventing overflow of coffee or water during dripping.

Espresso, which extracts high-temperature water from bean paste through high pressure, uses a special coffee extracting device. This device has a pressure of about 9 atm and a temperature of about 30 ° C for about 25 seconds at about 30 ° C Of coffee.

On the other hand, Dutch coffee is called water drip coffee and refers to coffee that has been extracted for a long time by using water at room temperature instead of hot water extraction method. This Dutch coffee is concerned with cold water, so it has less caffeine content than regular coffee, and has a long time flavor and taste.

1 is a front view showing a conventional Dutch coffee extracting apparatus.

Referring to FIG. 1, a conventional Dutch coffee extracting apparatus includes a water supply unit 1 for storing water, an extracting unit 2 for storing a coffee ward and extracting coffee, A storage unit 3 for collecting and storing the liquid coffee, a water supply unit 1 for storing the liquid coffee, and a cradle 5 for supporting the extraction unit 2 and the storage unit 3 in a vertically stacked structure.

The water supply part 1 is mounted on the uppermost part of the cradle 5 and has a lid 7 at an opened upper end and a drip amount regulating valve 8 for regulating the water dripping amount at the lower water supply pipe 6 Respectively.

The drip amount regulating valve 8 is installed in the center of the water supply pipe 6 of the water supply unit 1 and adjusts the area where the flow channel of the water supply pipe 6 and the valve hole coincide with each other, And adjusts the amount of dripping water and the speed at which the coffee falls.

The extraction unit 2 is disposed below the water supply unit 1 and a drip filter 9 for filtering a coffee extract is placed on the bottom surface. The storage unit 3 is disposed at a lower portion of the extraction unit 2 and the spiral tube 4 is often disposed to enhance the visual effect between the storage unit 3 and the extraction unit 2. [

In such a conventional Dutch coffee extracting apparatus, liquid water is extracted while the water slightly falling from the water supplying section 1 passes through the beans of the extracting section 2, and the extracted coffee passes through the spiral tube 4, (3).

However, since the coffee extracting water having a room temperature (room temperature) or less is slowly dripped and extracted for about 8 to 12 hours and in some cases for 24 hours or more, the coffee extraction time is longer than other coffee extraction methods There is a problem. Therefore, the water accumulated in the extracting section 2 for extracting coffee by putting water in the bean flour may not accumulate in the drip filter 9 yet accumulate, and may be overflowed to the upper part of the extracting section 2. Because it takes a lot of time to extract the Dutch coffee, it is often impossible to wait until the person extracts all of the coffee. In such a case, even if the coffee or the water is overflowed, the unknown state persists for a long time.

Also, depending on the type and condition of the drip beans, the time and time of the coffee's aroma and flavor may vary, and the user may want to adjust the drip speed of the coffee as desired, There was a problem that it was necessary to keep the side of the coffee extracting apparatus for a long time.

Korean Registered Utility Model 20-0451890 Korean Registered Utility Model 20-0464674 Korean Registered Utility Model 20-0478513 Korean Patent No. 10-1582722 Korean Registered Utility Model 20-0469626 Korean Registered Utility Model 20-0470316 Korea public utility model 20-2015-0001650

The object of the present invention is to prevent the user from having to guard the side of the coffee extracting apparatus by automatically shutting off the valve when the water falling into the bean flour is piled up and overflowing.

It is a further object of the present invention to allow a user to comfortably wait outside for a long time during which the Dutch coffee is extracted.

Another object of the present invention is to allow a user to easily adjust or control the instant coffee drip speed from the outside.

Another object of the present invention is to use a personal terminal such as a smart phone for controlling the Dutch coffee.

According to an aspect of the present invention, there is provided a Dutch coffee extracting apparatus including a water supply unit having a water inlet at an upper end thereof and a water supply pipe at a lower end thereof for supplying water for extracting coffee, And a drip filter for containing the coffee beans for extracting coffee at the bottom, an extracting part having a drip hole for dripping water to be poured from the upper part into the beverage at the bottom, A valve unit connected to the water supply pipe of the water supply unit and disposed at a lower end of the water supply pipe of the water supply unit and adapted to adjust an amount of water supplied to the extraction unit according to an input electrical signal, An extracting section water level sensor provided corresponding to a predetermined height, When the water level in response to the extraction unit is above a predetermined height and a valve controller for applying an electrical signal to the valve to lock the device to the valve device.

Preferably, the valve control unit controls the valve unit so that the valve unit is released after a predetermined first predetermined time after the water level of the extraction unit reaches a predetermined height and is locked.

More preferably, the valve control unit automatically adjusts the valve angle of the valve device through a control program that variably defines the amount of water falling from the water supply pipe of the water supply unit to the inlet of the extraction unit over time.

More preferably, the Dutch coffee extracting device

And a remote control unit for transmitting commands to the valve control unit for controlling the opening and closing of the valve unit, the period and the amount of water dropping per hour through valve angle adjustment, and the valve control unit.

According to another aspect of the present invention, there is provided a Dutch coffee extracting apparatus, comprising: a water supply quantity water detecting sensor for detecting whether or not water in the water supplying water has run out; If the amount is less than the predetermined amount, it further includes a notification device for notifying that extraction of the Dutch coffee is completed after the second predetermined time.

Preferably, the remote control unit is operable to wirelessly interfere with an application installed in the personal terminal and to input commands for controlling the opening and closing of the valve device, the period and amount of water dropping per hour through the valve angle adjustment, Receive.

More preferably, the control program is a program in which a period and an amount of water falling from a water supply pipe of the water supply unit to a water inlet of the extraction unit are individually set according to coffee information including coffee bean type and bean ground degree.

The coffee extracting apparatus according to the present invention has the effect of preventing coffee or water from overflowing even if the user who intends to extract the Dutch coffee is not near the extraction device for a long time.

The coffee extracting apparatus according to the present invention has an effect that the speed of the coffee dripping can be easily adjusted from the outside even if the user is in a different place for a long time.

1 is a front view showing a conventional Dutch coffee extracting apparatus.
2 shows a Dutch coffee extracting apparatus according to the present invention.
3 shows an example of an external remote controller.

In order to fully understand the advantages of the present invention and the advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

2 shows a Dutch coffee extracting apparatus according to the present invention.

Referring to FIG. 2, the Dutch coffee extracting apparatus 20 according to the present invention has a configuration similar to that of the conventional Dutch coffee extracting apparatus shown in FIG. 1, and basically has a water supply unit 1, an extracting unit 2, Part 3 and a cradle 5 for supporting the cradle 5 in a vertically stacked structure.

The water supply portion 1 of the Dutch coffee extracting apparatus 20 in FIG. 2 is also mounted on the uppermost portion of the cradle 5, and at the upper end of the opening end thereof, a water inlet 7 into which water is introduced for extracting coffee, A water supply pipe 6 is formed. A valve device 21 for adjusting the amount of water drip is installed at the middle or end of the water supply pipe 6. And a water supply quantity sensing sensor 24 in the bottom of the water supply unit 1 or inside the water supply pipe 6.

The valve device 21 is connected to the water supply pipe 6 of the water supply unit 1 or installed at the lower end of the water supply pipe 6 and is capable of automatically or manually adjusting the water supply It controls the amount of water. The valve device 21 is installed in the center of the water supply pipe 6 of the water supply unit 1 and is connected to the valve hole of the water supply pipe 6 in response to an automatic or manual input from the outside, The amount of water dripping to the extraction unit 2, that is, the speed at which the coffee is dropped, is adjusted by adjusting the area to be matched. This valve arrangement may utilize solenoid valves and various other valves may be used. Further, the valve upper end portion of the valve device 21 is attached with a silicone stopper to prevent water from leaking.

The water supply quantity sensor 24 senses whether the water contained in the water supply unit 1 has run out, that is, whether the water inside the water supply unit 1 has been completely discharged to the extraction unit 2. [ In an embodiment of the present invention, if there is no signal from the water quantity sensor 24 until a predetermined time (for example, 5 seconds) elapses after the extraction is started, can do.

The extraction unit 2 includes an inlet 10 at the center of the upper end so as to receive water falling from the water supply pipe 6 of the water supply unit 1 and a coffee beverage for extracting coffee, And a filter (9). The extraction unit 2 further includes an extraction unit level sensor (not shown) provided corresponding to a predetermined height in the extraction unit 1 to sense the height of the water falling from the water supply unit 1 to the extraction unit 2, 23).

The Dutch coffee extractor generally has a very long time to extract coffee from about 8 hours to 12 hours longer than 24 hours, so the user can not watch the coffee being extracted by the time. When the coffee is extracted, the speed at which the coffee extract is filtered through the drip filter 9 of the extraction part 2 is not constant depending on the nature of the coffee bean, the degree of grinding, the drip speed of the water, 2), there is a problem that the amount of coffee extract is not constant over time depending on the height of the water. In this case, when the valve device 21 is initially set, the speed at which the coffee is extracted from the extraction part 2 gradually decreases even if the speed of the water supplied through the water pipe 6 is made smaller than the speed at which the coffee extract is made There is a problem that the water is gradually accumulated in the extraction part 2. In this case, when the user is not next to the Dutch coffee extracting apparatus, the water which gradually falls from the water feeding section 1 through the valve device 21 may be piled up in the extraction section 2. The extracting coffee water extracting apparatus 20 according to the present invention is provided with an extracting section water level sensor 23 inside the extracting section 2 and is provided with a predetermined height of water falling from the water feeding section 1 to the extracting section 2, It detects the height when it is detected. For this purpose, it is preferable that the extraction unit level sensor 23 is installed in the extraction unit 2 in correspondence with the predetermined height. On the other hand, in the case of a general water sensor, even if a small amount of water is present, there is a possibility that the flood (a state in which water is kept up to a predetermined height) is generated. Therefore, in the preferred embodiment of the present invention, the extracting water level sensor 23 extends two electric wires or electrodes from a sensor so that two electric wires or electrodes simultaneously touch water, . And the ends of the two wires are preferably coated with magnesium to prevent the possibility of internal contamination.

When the water level sensor 23 senses that the height of the water inside the extraction unit 2 is equal to or higher than the predetermined height, the valve control unit 22 controls the water level sensor 23 The water level sensor 23 may be configured to block the electricity supplied to the water level sensor 23.

In another embodiment of the present invention, the extraction portion water level sensor 23 may be provided at the same height in the extraction portion 2 with two or more. In this case, if a signal occurs in only one of the two sensors, the malfunction of the sensor is made to sound with the flood notification, and if the signal is generated by both of the two sensors, only the flood notification sounds.

Meanwhile, the Dutch coffee extracting apparatus 20 according to the present invention includes a valve control unit 22, which operates in response to a signal transmitted from the extracting unit level sensor 23, When a signal indicating that the water level in the extraction unit 2 has reached a predetermined height is transmitted from the water level detection sensor 23, a command for controlling the valve of the valve unit 21 to be transmitted to the valve unit 21 is transmitted And functions to block the water from flowing into the extraction unit 2 through the water supply pipe 6.

When the valve device 21 is locked for a certain period of time, the water in the extraction part 2 is extracted through the drip filter 9 and is extracted as coffee, so that the water level in the extraction part 2 is sufficiently lowered. Then, the valve control unit 22 transmits a command to control the valve device 21 to release the valve again after a predetermined time. The preset predetermined time may be a time arbitrarily input by the user and may be set to a control program individually set using a database calculated in advance according to the type of coffee bean, the degree of bean crushing, the amount of water, And may be designated accordingly.

The valve control unit 22 controls the amount of water per hour falling from the water supply pipe 6 of the water supply unit 1 to the inlet 10 of the extraction unit 1, To adjust the valve angle of the valve device (21). Such a manual input may be used by an IR remote controller or may be input through an external device connected via a wireless network such as an application installed in a personal terminal such as a smart phone. For example, if you want to quickly extract drip coffee, press the (+) button on the remote control or application to increase the water drip rate. If you want to slowly extract the drip coffee, press the (- You will be able to reduce the speed. It is also possible to control the opening and closing of the valve device 21 through the on / off button of the remote control or the application. Of course, this function can be done through the above control program instead of the user's manual input.

The above control program is data set in advance according to the size of the extraction device, the kind of the coffee bean, the degree of crushing, and the like, for example, the time or the period of the flood depending on the kind of the bean, . Table 1 below shows three general program settings, taking into account the seasonal conditions for extracting coffee, the degree of grinding of the beans, and the temperature of the water. (The flood management time in each process is 1 hour, this time After that, it is preferable to return to the initial water droplet speed and repeat the same process when new flood occurs.

Program type Details Setting value Remarks
Algorithm A (summer)

Initial water velocity One drop in 1.5 seconds
In the summer, or if the water temperature is high, the extraction is done quickly due to contamination or oxidation of the beans.

Dripping time after the flood After 10 seconds after no signal from the extracting part level sensor Drip speed after flood One drop in 1.7 seconds Speed change when flood occurs again Automatically add 0.2 seconds
Algorithm B (Spring, Autumn)

Initial water velocity One drop per second
The most commonly used water droplet speed

Dripping time after the flood After 10 seconds after no signal from the extracting part level sensor Drip speed after flood One drop in 2.3 seconds Speed change when flood occurs again If flooding occurs again, add 0.3 seconds automatically
Algorithm C (Winter)

Initial water velocity One drop in 2.5 seconds
The temperature is low in winter, so the beans do not get wet well and drain is slow

Dripping time after the flood After 10 seconds after no signal from the extracting part level sensor Drip speed after flood One drop in 2.8 seconds Speed change when flood occurs again Adds 0.3 seconds automatically

The above program setting is only one example, and the scope of the present invention is not limited thereto.

Referring again to FIG. 2, the Dutch coffee extracting apparatus 20 according to the present invention includes a water quantity sensor 24 for detecting whether the water in the water feeder 1 has run out, And a notification device (not shown) for indicating overflow. This water quantity sensor 24 senses the water in the water feeder 1 when the water in the water feeder 1 is completely exhausted ) To pass through the coffee extraction process, the coffee extraction process is completed. The notification device may be implemented as a separate component, but may be installed in an application installed in the valve control unit 22 or installed in an external remote controller or personal terminal, and inform the user. In addition, the notification device may be implemented as a separate component, and may be simultaneously implemented in the remote control or the personal terminal so that the notification may be simultaneously sounded.

2, the storage section 3 is disposed below the extraction section 2 and the spiral tube 4 (not shown) is provided to enhance the visual effect between the storage section 3 and the extraction section 2, The liquid coffee is extracted while the water slightly falling from the water supply part 1 passes through the beans of the extraction part 2 and the extracted coffee passes through the spiral tube 4 to be separated from the storage part 2. [ (3).

3 shows an example of an external remote controller.

Referring to FIG. 3, a remote controller implemented in an IR remote control, a terminal application or the like includes a power source for a coffee extracting device, a program setting button, an OK button, a notification LED, a speed increase, a speed decrease, a valve stop / And a button for numerically controlling the control or valve control with a predetermined number of preset values.

Referring to FIGS. 2 and 3, an example of using the Dutch coffee extracting apparatus according to the present invention will be described. When the user presses an operation start button through an external wireless remote controller such as an IR remote controller or a smartphone application, (For example, by one drop per second) from the water supply section 1 to the extraction section 2 through the water supply section 1 (see FIG. Pressing the play / stop button again locks the valve, and pressing this button again opens the valve. Also, it is possible to adjust the speed by increasing or decreasing the water droplet dripping speed falling from the water supply unit 1 through the speed change button of the remote controller. At this time, it is preferable that the time taken for a droplet to fall is displayed on the display portion of the case. Each time you press the button, you can adjust the time for one drop of water to be 0.1 second. This can be controlled by the number of IR remote controls. In the process of extracting coffee from the Dutch coffee extracting apparatus, if water is detected by the extracting unit level sensor 23 in the extracting unit 2, a red LED is turned on by the notification device and the remote control unit, and a warning sound is reproduced through a buzzer A warning message is played back in a smart phone application or the like. At the same time, the valve control unit 22 locks the valve unit 21 for a predetermined time to prevent the water from overflowing in the extracting unit 2 in advance. After the predetermined time, the valve control unit 22 instructs the valve device 21 to open again, and continues the coffee extraction. The predetermined time may be set by a user in advance, or may be set through a program using data set in advance according to the size of the extraction device, the type of coffee bean, the degree of crushing, and the like. For example, since a time or a period of flooding may vary depending on the type of bean, the degree of grinding of the bean, and the amount of water, the program can be set individually. In order to use the remote controller shown in FIG. 3, The program can be divided into A, B, and C, and the water velocity, the flood management time, and the initial water velocity can be applied differently depending on each program. The initial example settings can be customized later by direct experimentation, and then users can change the settings themselves by using the setup (settings) button on the remote control. It is possible to control the speed of water droplets in the Dutch coffee process with one touch through the A, B and C buttons on the remote control, and the speed of water droplet speed adjustment is automatically performed, so it is easy to make Dutch coffee without worrying.

If the water in the water supply unit 1 is detected through the water supply water quantity sensor 24, it is possible to make coffee in the intermediate water extraction unit 2 even after a certain period of time, After the lapse of the time, for example, about 15 minutes, the notification device notifies the completion of the coffee extraction process. This can be notified through the notification function installed in the valve control unit 22, the green LED of the IR remote control, and notification function of the buzzer or smartphone application.

The coffee extracting apparatus according to the present invention has the effect of preventing coffee or water from overflowing even if the user who intends to extract the Dutch coffee is not near the extraction device for a long time.

The coffee extracting apparatus according to the present invention has an effect that the speed of the coffee dripping can be easily adjusted from the outside even if the user is in a different place for a long time.

The present invention has been described with reference to the above-mentioned embodiments.

It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is to be understood, therefore, that the above description is intended to be illustrative, and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, Ranges and equivalents thereof are to be construed as being included within the scope of the present invention.

1: water supply part 2:
3: Storage part 4: Helical tube
5: Cradle 6: Water pipe
7: Water inlet 8: Valve for adjusting the amount of drip
9: Drip filter 20: Dutch coffee extracting device
21: valve device 22: valve control part
23: Extraction part level sensor
24: Water quantity sensor

Claims (10)

A water supply unit including a water inlet at an upper end and a water supply pipe at a lower end to feed water for extracting coffee;
And a drip filter for containing coffee beans for extracting coffee at the bottom, and a drip hole for dripping water into the bean sprouts from the upper part of the bottom of the drip filter, An extraction unit formed;
A valve unit connected to the water supply pipe of the water supply unit and disposed at a lower end of the water supply pipe of the water supply unit and adjusting an amount of water supplied to the extraction unit in accordance with an input electrical signal;
An extracting unit level sensor installed corresponding to a predetermined height in the extracting unit to sense a height of water in the extracting unit; And
And a valve control unit for applying an electric signal to the valve unit to lock the valve unit when the level of the extraction unit reaches the predetermined height in response to the extraction unit level sensor. The method according to claim 1,
The valve control unit may control the electric power supplied to the extracting unit water level sensor so that the water contained in the extracting unit water level sensor is dried when the extracting unit water level sensor detects that the height of the water inside the extracting unit is equal to or higher than the predetermined height, Wherein the coffee extracting apparatus cuts out the coffee. The method according to claim 1,
Wherein the valve control unit controls the valve unit so that the valve unit is released after a predetermined first predetermined time after the water level of the extraction unit reaches a predetermined height and is locked. The method of claim 3,
Wherein the valve control unit automatically adjusts the valve angle of the valve unit through a control program that variably defines the amount of water falling from the water supply pipe of the water supply unit to the inlet of the extraction unit over time, Extraction device. 5. The method of claim 4,
The Dutch coffee extracting apparatus
Further comprising a remote control unit for transmitting commands to the valve control unit for controlling the opening and closing of the valve unit and adjusting the amount and the amount of water dropping per hour through the valve angle adjustment. The method according to claim 1,
Wherein the valve device is a solenoid valve and the upper end of the valve is attached with a silicone plug. The method according to claim 1,
The extraction unit quantity sensor
Wherein at least two of the plurality of coffee beans are installed at the same height inside the extraction unit. The method according to claim 1,
The extraction unit quantity sensor
Wherein at least one of the first and second electrodes is disposed at a height not touching the inside of the extracting unit and includes at least two electrodes for sensing water in the extracting unit and the end coated with magnesium is connected to the electrode. Extraction device. The method of claim 5, wherein
Wherein the remote control unit receives commands for controlling the opening and closing of the valve device and adjusting the amount and the amount of water falling through the valve by adjusting the valve angle in cooperation with the application installed in the personal terminal through the operation of the application Dutch coffee extracting device. 5. The method of claim 4,
Wherein the control program is a program for individually setting a period and an amount of water falling from the water supply pipe of the water supply unit to the inlet of the extraction unit in accordance with the coffee information including the bean type, bean crushing degree, and water temperature. Device.

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