KR101845629B1 - Dutch coffee extraction apparatus - Google Patents

Abstract

The present invention relates to a Dutch coffee extracting apparatus. The present provides the Dutch coffee extracting apparatus provided with an upper, a middle and a lower layer compartment within a main body (100) formed in a tower shape and mounting a control unit (110) on a front side, comprising: a water storage unit (130) formed to have a shape of a container with a constant volume to receive pure water through a feeding pipe connected to a water purification unit (120) and embedding a water quantity detection sensor (131) to maintain a constant water quantity; a sterilizing unit (140) provided with a transparent pipe body (141) connected to a discharge pipe of the water storage unit (130) and an UV lamp (142) emitting an ultraviolet ray into the transparent pipe body (141) to sterilize bacteria; a pure water pumping unit (150) provided with one or more pumps (151, 152) receiving the sterilized pure water to pump the same at constant speed; a drip unit (180) provided with a plurality of nozzles (181-184) coupled to a rear end of the feeding pipe connected to the pure water pumping unit (150) to supply pure water with constant quantity to coffee powder for extracting a coffee extract; and a cylinder unit (190) provided with a plurality of cylinders (191-194) coupled to a rear end of the nozzles (181-184) to collect the extracted coffee extract. Therefore, the present invention effectively implements a cold brew method unique to the Dutch coffee using cold water at 5-10°C and extracts much Dutch coffee in a short time.

Description

DUTCH COFFEE EXTRACTION APPARATUS

[0001] The present invention relates to a Dutch coffee extracting apparatus, and more particularly, to a Dutch coffee extracting apparatus which extracts a coffee stock solution using cold water for a long time, effectively realizing a cold brew method of the Dutch coffee, And a large amount of the coffee stock solution can be extracted in a shorter time while maintaining the flavor.

Generally, coffee is prepared by grinding a roasted coffee bean with a grinder and then extracting a useful ingredient by using water to make a drinkable coffee liquid.

Therefore, coffee has various flavors and flavors according to the extraction method. Representative extraction methods include dipping method, intoxicating method, filtration method, and pressure extraction method.

The dipping method is an extraction method in which water is poured into pulverized coffee powder and the coffee liquid is obtained by taking the supernatant liquid except for the coffee powder which is boiled and precipitated in a short period of time. In the case of the concerned method, hot water is poured into the coffee powder After waiting, the supernatant is taken to obtain a coffee liquid. The filtration method is an extraction method in which coffee powder is put into a frying apparatus and hot water is poured thereon to obtain a coffee liquid by taking a filtered coffee liquid by a sieve. The pressurized extraction method is a method in which hot water or steam is passed through a high pressure To obtain a coffee liquid.

In the general coffee extraction method as described above, a coffee liquid is obtained by extracting a useful ingredient for 2 to 5 minutes using hot water boiled at 100 ° C., while using a cold brew method, ie, cold water, Is extracted.

That is, instead of hot water, Dutch coffee is made by a method of slowly extracting the undiluted solution using cold water at 5 to 10 ° C for about 3 to 12 hours, and drinking coffee by diluting water with the coffee solution.

Dutch coffee is lower in caffeine content and contains antioxidants compared to coffee by a general extraction method using hot water, which is not only beneficial to health but also due to its unique deep flavor and taste, Interest is growing.

5, a water port 20 is provided at an upper portion of the frame 10 and a drier (not shown) is provided at a lower portion of the water port 20, (30), a cochlea (40) for transferring the coffee liquid, and a drip server (45) for collecting the coffee liquid. As an example of such a duffy coffee extracting mechanism, a more specific structure will be described with reference to the technology disclosed in the patent document 10 - 2011 - 0024498.

An outlet formed at the lower end of the main body for discharging water and a discharge port formed at the upper end of the outlet for regulating an extraction speed of water discharged through the outlet, A first control valve, a basket for storing the beverage material so that the beverage is extracted by the water falling from the main body by adjusting the first control valve, and a second control valve for controlling the extraction speed of the beverage extracted at the lower end of the basket, Lt; / RTI >

The first control valve and the second control valve are opened to extract the raw liquid from the beverage material to be filled in the basket, and the first control valve is opened and the second control valve is closed, whereby the beverage ingredients So that the raw liquid is allowed to stay for a long time to be leached.

On the other hand, a device capable of extracting a large quantity of Dutch coffee by providing a plurality of the above-mentioned Dutch coffee extracting mechanisms has been developed and known, and a configuration of a batch production apparatus for a Dutch coffee in Patent Literature 10 - 2014 - 0032839 And a coffee extractor disposed below and spaced apart from the cold water supply portion and adapted to extract coffee juice and to extract coffee juice, wherein the coffee extractor is provided corresponding to each of the nozzles, A plurality of coffee extracting passages having a coffee extracting port, and a single tray for supporting the coffee extracting container.

Patent Publication No. 10 - 2011 - 0024498 Published Patent Publication No. 10 - 2014 - 0032839 Patent Registration No. 10-1528301 Registration Utility Model No. 20 - 0478513

As described above, the conventional Dutch coffee extracting apparatus extracts the coffee stock solution by extracting a useful ingredient from the coffee powder while controlling the feed rate of water using cold water.

Therefore, it takes a few hours to several hours to obtain a practically acceptable level of the crude coffee stock solution, which is disadvantageous in that the extraction amount per unit time is very small as compared with general coffee.

In order to overcome such a problem, there has been developed an apparatus for connecting a plurality of Dutch coffee extractors to a large number of extractors as in the above-described patent, but since the extraction quantity is simply increased by increasing the number of extractors, Is still small.

On the other hand, as a technique for increasing the extraction amount by improving the extraction speed of the Dutch coffee, there has been proposed a technique of spraying water directly onto the coffee powder as disclosed in Patent No. 10-1550537, There is a problem that the concept and flavor of the Dutch coffee by the cold brew method is lost because the heat generated by various power devices for spraying high-pressure water such as a piston causes an increase in water temperature.

Accordingly, the present invention has been made to solve the above-mentioned problems,

A Dutch coffee extracting apparatus having upper, middle, and lower compartments inside a main body (100) of a tower type, and a control unit (110) mounted on a front surface thereof;

A water reservoir 130 is installed in the upper part of the main body 100 to receive a purified water through a transfer pipe connected to the water purification part 120 and to contain a water detection sensor 131, A sterilizer 140 for sterilizing bacteria by providing a transparent tube 141 connected to the discharge pipe of the reservoir 130 and a UV lamp 142 for irradiating ultraviolet rays inside the transparent tube 141, (150) having one or more pumps (151, 152) for introducing the sterilized purified water and pumping the sterilized purified water at a constant speed to carry the sterilized purified water;

The middle layer of the main body 100 is provided with a plurality of nozzles 181 to 184 which are connected to the rear end of the transfer pipe connected to the water pump unit 150 and supply a predetermined amount of purified water to the coffee powder. A dripping portion 180 is mounted;

A cylinder portion 190 for collecting the extracted coffee liquid is mounted on a lower portion of the main body 100 and includes a plurality of cylinders 191 to 194 coupled to a rear end of the nozzles 181 to 184;

A plurality of solenoid valves S are mounted on a transfer pipe connecting the water purification unit 120 and the drip unit 180 to control the transfer amount of the water manually or automatically by the control unit 110, It is possible to extract a large amount of Dutch coffee in a short time while applying the brew method.

The present invention has the effect of extracting a large amount of Dutch coffee by drastically shortening the extraction time while applying the cold brew method of the Dutch coffee.

Particularly, while the water quality and the temperature of the purified water to be used for extraction are kept within an appropriate range, the supply rate of the purified water can be increased by using one or more pumps and the extraction amount per hour can be remarkably increased. The cooling water is cooled and stably cooled by the cooling unit, whereby an effective cold brew can be achieved.

Therefore, it is anticipated that it will contribute to popularization of Dutch coffee, which is supplied at a higher price than general coffee, as well as reducing the manufacturing cost by increasing the extraction amount while preserving the characteristic flavor of the Dutch coffee.

1 is an external perspective view of an embodiment of a Dutch coffee extracting apparatus according to the present invention.
2 is an external front view of an embodiment of the Dutch coffee extracting apparatus of the present invention.
3 is a block diagram showing a specific configuration of the Dutch coffee extracting apparatus of the present invention.
FIG. 4 is a perspective view showing a recessed portion mounted on an upper portion of a main body of the Dutch coffee extracting apparatus of the present invention. FIG.
FIG. 5 is a perspective view schematically showing a configuration of a Dutch coffee extractor according to the prior art; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown.

FIG. 1 is a perspective view of an embodiment of a Dutch coffee extracting apparatus according to the present invention, FIG. 2 is an outline front view of an embodiment of a Dutch coffee extracting apparatus according to the present invention, and FIG. FIG. 5 is a perspective view schematically showing a configuration of a Dutch coffee extractor according to the related art, and FIG. 5 is a perspective view schematically showing a structure of a Dutch coffee extractor according to the related art .

The Dutch coffee extracting apparatus to which the technology of the present invention is applied is configured to extract coffee raw material at a suitable water temperature in the range of 5 to 10 ° C by applying a cold brewing method of the Dutch coffee by extracting the coffee raw material by supplying cold water at a high speed, So that a large amount of Dutch coffee can be extracted in a short time while maintaining the unique flavor of the Dutch coffee.

As shown in FIGS. 1 and 2, the Dutch coffee extracting apparatus of the present invention includes a main body 100 formed of a tower, and upper, middle, and lower compartments, Configure a coffee extractor.

3 to 4, the upper part of the main body 100 includes a water purification part 120 for purifying water supplied from the outside, a water storage part 130 for storing purified water, (140) and a purified water pump unit (150) for pumping purified water.

The water storage part 130 is formed in a container shape having a constant volume and supplies purified water through a transfer pipe connected to the water purification part 120, and a water quantity sensor 131 is built therein to store purified water while maintaining a constant water quantity.

The purified water stored in the water storage part 130 is conveyed to the sterilizing part 140 by gravity through the conveyance pipe, so that the supply rate of the purified water varies depending on the amount (water level). Therefore, a predetermined solenoid valve (S) is mounted between the water storage part (130) and the water purification part (120) and the quantity of purified water is kept constant by interlocking with the water volume detection sensor (131).

The reservoir capacity of the reservoir 130 is controlled by the controller 110 according to the extraction capacity of the drippers 180 and the cylinder 190 to be described later.

The sterilizer 140 includes a transparent tube 141 connected to the discharge tube of the reservoir 130 and a UV lamp 142 for irradiating ultraviolet rays inside the transparent tube 141 to sterilize the bacteria.

The ultraviolet rays irradiated by the UV lamp 142 are very effective in sterilizing various microorganisms such as bacteria and fungi, as is well known. Even if the purified water is supplied to the reservoir unit 130 through the purified water unit 120, the possibility of bacteria to be stored in the reservoir unit 130 can not be excluded, Thereby eliminating the possibility of harmful bacteria even while passing through the subsequent device.

The water pump unit 150 includes one or more pumps 151 and 152 that pump the sterilized purified water by the sterilizing unit 140 and pump the purified water at a constant speed.

In the water purification unit 120, the water storage unit 130 and the sterilizing unit 140, purified water is supplied along the transfer pipe by gravity, so that the water purification pump unit 150 amplifies the transfer rate of the purified water using the pumps 151 and 152 And ultimately improves the extraction rate of the coffee stock solution.

The pumps 151 and 152 provided in the water purification pump unit 150 may be designed to perform the functions of the pumps 151 and 152 or the conditions of the water storage unit 130 and the drip unit 180 and the cylinder unit 190 And thus may have one or more.

A predetermined solenoid valve S is mounted on a transfer pipe connected to a rear end of the pumps 151 and 152 and the control unit 110 interlocks with a speedometer 153 provided separately to the water pump unit 150, .

The middle layer of the main body 100 has a plurality of nozzles 181 to 184 connected to the rear end of the transfer pipe connected to the water pump unit 150 to supply a predetermined amount of purified water to the coffee powder, And a dripping portion 180 for extracting is mounted.

Since the feed rate of the purified water is remarkably amplified by the water pump unit 150 and supplied to the drip unit 180 as described above, the respective nozzles 181 to 184 Is preferably enclosed by a predetermined tank containing the coffee powder.

A cylinder portion 190 for collecting the extracted coffee liquid is mounted on a lower portion of the main body 100 with a plurality of cylinders 191 to 194 coupled to the rear ends of the nozzles 181 to 184.

Particularly, the plurality of nozzles 181 to 184 and the cylinders 191 to 194 are connected by individual transfer pipes. A predetermined solenoid valve S (not shown) is connected to a transfer pipe connected to the tips of the individual nozzles 181 to 184, So that the individual nozzles 181 to 184 can be selectively operated by the control unit 110.

Accordingly, a plurality of solenoid valves S are mounted on the transfer pipe connecting the water purification unit 120 and the dripping unit 180 to control the amount of water transferred manually or automatically by the control unit 110 So that the optimum flavor is maintained.

On the other hand, a pressure gauge 161 and an air chamber 160 are installed on the transfer pipe connected to the rear end of the water pump unit 150 to control the pressure of purified water pumped by the pumps 151 and 152, .

The purified water may cause a kind of pulsation phenomenon in which vibration is weakly generated in a few seconds in the process of being pumped through the pumps 151 and 152, which may be a main cause of impeding the stable flow of purified water. Accordingly, compressed air is blown into the conveyance pipe through the air chamber 160 to eliminate the ripple phenomenon, and the pressure and flowability of the purified water are kept constant.

On the other hand, a cooling unit 170 for cooling the purified water pumped by the purified water pump unit 150 to 5 to 10 ° C and transferring the cooled water to the drip unit 180 is mounted on the upper part of the main body 100.

That is, the purified water is inevitably lifted by the heat generated by the respective devices constituting the pumps 151 and 152 while passing through the purified water pump unit 150, And the cooling unit 170 is mounted on the cooling unit 170 to cool the water temperature.

The cooling unit 170 is provided with an underwater pump 171, a thermoelectric device 172 and a cooling fan 173 to supply the cooled purified water to the drip unit 180.

The submerged pump 171 is connected to a transfer pipe connecting the water pump unit 150 and the drip unit 180 to introduce or discharge the purified water into the cooling unit 170. It is preferable that the underwater pump 171 is constructed so as not to interfere with the purified water supply rate amplified by the above-described water pump unit 150. [

The inlet and outlet of the submersible pump 171 are constructed so that a water temperature meter is built in to control the water temperature flowing into the cooling unit 170 and the temperature of the purified water discharged.

The thermoelectric element 172 incorporates a heat absorbing block and a heat dissipating block to electrically heat and discharge heat of the introduced purified water. The thermoelectric element 172 is a cooling element based on the principle that ambient heat is absorbed when a current is passed through a dissimilar metal junction portion, and the technical content thereof has already been well known, so a detailed description thereof will be omitted.

The cooling fan 173 is coupled to the heat dissipation block of the thermoelectric device 172 to discharge the heat to the outside of the cooling unit 170.

The cooling unit 170 as described above constitutes the thermoelectric device 172 and the cooling fan 173 that can quickly absorb and cool the ambient heat by the interaction of heat and electricity, 150 can efficiently cool the water temperature of the purified water that is transported at a high speed in a short time.

The state of use of the Dutch coffee extracting apparatus to which the technology of the present invention having the above-described structure is applied will be described below.

1 and 4, a series of devices and a solenoid valve S mounted in the present invention extracts the control unit 110 mounted on the front surface of the main body 100 manually or automatically .

Water is introduced into the purified water portion 120 along a transfer pipe connected to an upper portion of the main body 100 from an external water source to perform a primary purification.

The solenoid valve S mounted to the transfer pipe connected to the rear end of the water purification unit 120 is opened and purified water is supplied to the water storage unit 130. The purified water is transferred to the sterilizing unit 140 by gravity while maintaining the quantity of water supplied by the water sensor 131 built in the reservoir unit 130 constant.

In the sterilizer 140, ultraviolet rays are irradiated from the UV lamp 142 to the purified water passing through the transparent tube 141 to kill the bacteria, thereby performing a secondary constant following the integer part 120.

The sterilized purified water as described above flows into the water pump unit 150 and is pumped by one or more pumps 151 and 152. Accordingly, the flow rate of the purified water that has been transferred by the gravity from the water storage portion 130 to the sterilizing portion 140 through the water pump portion 150 is remarkably increased.

The solenoid valve S connected to the rear end of the individual pumps 151 and 152 is opened so that the purified water is discharged into the transfer pipe and the pressure of purified water is controlled by the compressed air particles ejected from the air chamber 160 to be constant, So that stable flowability is obtained.

The purified water is introduced into the cooling unit 170 by an underwater pump 171 coupled to a transfer pipe connecting the water pump unit 150 and the drip unit 180.

The water that has undergone the pumping process by the water pump unit 150 is heated by the heat generated by the pumps 151 and 152 and has a temperature not suitable for the cold brewer. The cooling water is cooled to a suitable temperature of 5 to 10 ° C by the cooling fan 173 and supplied to the drip part 180.

The drip unit 180 selectively supplies the cooled purified water from the plurality of nozzles 181 to 184 by the control unit 110 to extract the coffee liquid from the coffee powder. The drip unit 180 is provided in the cylinder unit 190, 181 to 184, the coffee stock solution is collected in a plurality of cylinders 191 to 194 individually connected to the respective cylinders.

Therefore, the above-mentioned Dutch coffee extracting apparatus according to the present invention can extract a large amount of Dutch coffee by dramatically shortening the extraction time while applying the cold brewing method which is a method of extracting the coffee stock solution using cold water There is an effect.

That is, the pumps 151 and 152, which are provided in the water pump unit 150 in one or more stages while appropriately maintaining the quality of the purified water used for extracting the coffee stock solution through the water purification unit 120 and the sterilizing unit 140, ), The flow rate of the purified water can be increased and the extraction amount per time and unit can be remarkably increased.

Particularly, in the process of passing through the water pump unit 150 for increasing the flow rate, the water temperature which is inevitably lifted is quickly and efficiently cooled by the cooling unit 170 so that the purified water temperature is stably cooled So that it can be used for extraction.

Therefore, it is expected that it will contribute greatly to the popularization of Dutch coffee, which is supplied at a higher price than ordinary coffee, because it is possible to simultaneously extract a large quantity of cold brewer's flavor while preserving the unique flavor.

100: main body 110:
120: integer part 130:
131: Quantity detection sensor 140:
141: transparent tube 142: UV lamp
150: Water pump section 151 to 152: Pump
153: speedometer 160: air chamber
161: pressure gauge 170:
171: Submersible pump 172: Thermoelectric element
173: Cooling fan 180: Drip part
181 to 184: Nozzle 190:
191 to 194: Cylinder S: Solenoid valve

Claims (3)

A Dutch coffee extracting apparatus having upper, middle, and lower compartments inside a main body (100) of a tower type, and a control unit (110) mounted on a front surface thereof;
In the upper portion of the main body 100,
A reservoir 130 formed in a container shape having a constant volume and supplied with purified water through a transfer pipe connected to the water purification unit 120 and having a water detection sensor 131 built therein to maintain a predetermined water volume,
A sterilizer 140 having a transparent tube 141 connected to the discharge tube of the reservoir 130 and a UV lamp 142 for irradiating ultraviolet rays inside the transparent tube 141,
A water pump unit 150 having one or more pumps 151 and 152 that pump sterilized purified water and pump it at a constant speed,
A cooling unit 170 for cooling the water temperature of the purified water pumped by the purified water pump unit 150 to 5 to 10 ° C and transferring the cooled water to the drip unit 180;
In the middle layer portion of the main body 100,
A drip part 180 for extracting a coffee stock solution is mounted with a plurality of nozzles 181 to 184 coupled to a rear end of a transfer pipe connected to the water pump part 150;
In the lower layer portion of the main body 100,
A plurality of cylinders (191 to 194) coupled to the rear end of the nozzles (181 to 184) and mounting a cylinder unit (190) for collecting the extracted coffee liquid;
An air chamber 160 for spraying compressed air to the transfer pipe is installed on a transfer pipe connected to the rear end of the water pump unit 150 to constantly control pressure and flow of purified water pumped by the pumps 151 and 152 and;
The cooling unit 170,
An underwater pump 171 which is coupled to the transfer pipe connecting the water pump unit 150 and the drip unit 180 to introduce or discharge the purified water to and from the cooling unit 170; And a cooling fan 173 which is coupled to the heat dissipation block of the thermoelectric module 172 to discharge the heat to the outside, and is discharged from the water pump unit 150 Is cooled and supplied to the drip portion (180). delete delete

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