KR101648875B1 - Cold brew coffee maker - Google Patents

Abstract

A coffee extracting apparatus for extracting coffee by a low temperature extraction method in an airtight space inside an adiabatic frame is connected to a water supply pipe and supplies water to the water filter unit while maintaining the water pressure of water to be supplied constantly. A second water pressure regulating part for further reducing the pressure of the water passing through the water filter part; a second water pressure regulating part for receiving water sprayed from the second water pressure regulating part, A spiral transparent tube for delivering the coffee raw material liquid extracted from the ground coffee storage portion to the coffee raw material storage portion, a compressor and a heat sink are disposed outside the heat insulating frame, and the ambient temperature Wherein the evaporating portion to be lowered is disposed inside the heat insulating frame, wherein the evaporating portion includes first and second pressure regulating portions, A cooling unit arranged to face the filter unit and cooling the inside of the heat insulating frame on the basis of the temperature sensed by the temperature sensor for sensing the temperature of water in the second water pressure regulating unit; And a reflector for reflecting the ultraviolet rays emitted from the ultraviolet lamp to the spiral transparent tube and the stock solution storage portion.

Description

{COLD BREW COFFEE MAKER}

The present invention relates to a coffee extracting apparatus, and more particularly, to a coffee extracting apparatus of a low temperature extraction type.

A typical coffee extracting apparatus uses a method of quickly extracting a raw coffee liquid using hot water. Especially, in a coffee shop, a method of quickly extracting coffee using a high-temperature steam in a short time is widely used. When the coffee is extracted at such a high temperature, there is a disadvantage that the aroma and taste of the coffee suddenly change over time after the extraction.

Recently, a method of extracting coffee using a low temperature water for a long time has been widely used. The low-temperature extraction type coffee is commonly referred to as "Dutch coffee" in Korea.

1 is a configuration diagram showing a conventional coffee extracting apparatus of a low temperature extraction type.

1, a conventional coffee extracting apparatus of a low temperature extraction type includes a water supply unit 10, a manual valve 11, a coffee storage 20, a spiral transparent tube 30, a coffee stock solution reservoir 40, And a frame 50.

The water supply unit 10 is configured to store low-temperature water and supply a predetermined amount of water to the coffee storage box 20. [ Since the coffee beans in the coffee storage box 20 are in a pulverized state, when the water is supplied to the upper portion, the extracted coffee stock solution is moved downward by gravity. The coffee stock solution is moved downward along the spiral transparent tube 30 and finally stored in the coffee stock solution reservoir 40. The support frame 50 is made of a wood material and supports the water supply part 10, the coffee storage 20, the spiral transparent tube 30 and the coffee stock solution reservoir 40.

In the conventional coffee extracting apparatus as described above, since the coffee extracting apparatus is exposed to the outside air, it is greatly affected by the ambient temperature and humidity. That is, the quality of the extracted coffee stock solution is not constant in a state where the temperature and humidity around the coffee extracting apparatus can change rapidly, such as in summer and winter. Further, the conventional coffee extracting apparatus is not structurally suitable for extracting a large amount of coffee from a coffee shop, and when coffee is extracted for a long time, it may be oxidized or contaminated before fermentation and aging. Further, since the water supplied to the coffee stall 20 is controlled through the manual valve 11, it is difficult to keep the pressure of the supplied water constant.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a coffee extracting apparatus capable of maintaining a unique taste and aroma without being oxidized or contaminated even when extracted with low temperature water for a long time .

There is also provided a coffee extracting apparatus of a low temperature extraction type capable of extracting a large amount of a coffee stock solution maintaining a constant quality.

According to an embodiment of the present invention, there is provided a coffee extracting apparatus for extracting coffee by a low-temperature extraction method in an enclosed space inside a heat insulating frame, the coffee extracting apparatus being connected to a water supply pipe and supplying a water pressure to the water filter unit, A first water pressure regulator for shutting off water supply when the pressure of water supplied from the water supply pipe is equal to or higher than a set pressure; A second water pressure regulator for further reducing the pressure of the water passing through the water filter portion; A pulverized coffee storage part for receiving water sprayed from the second water pressure regulating part and delivering the extracted coffee raw fluid to the lower part; A spiral transparent tube for delivering the coffee raw stock extracted from the ground coffee storage part to the coffee raw stock storage part; Wherein the compressor and the heat sink are disposed outside the heat insulating frame, and the evaporator for lowering the ambient temperature is disposed inside the heat insulating frame, wherein the evaporator is in contact with the first and second water pressure regulating portions, A cooling unit arranged to cool the inside of the heat insulating frame based on a sensed temperature of a temperature sensor that senses a temperature of water in the second water pressure regulating unit; An ultraviolet lamp disposed adjacent to the coffee stock solution storage section; And a reflector for wrapping the spiral transparent tube and the outer portion of the coffee raw material storage portion in an elliptic shape and reflecting ultraviolet rays emitted from the ultraviolet lamp to the spiral transparent tube and the coffee raw material storage portion.

The control unit may control the intensity of the ultraviolet light of the ultraviolet lamp as the temperature of the ultraviolet lamp increases as the temperature of the temperature sensor increases.

The reflector may include: a first reflector that surrounds the spiral transparent tube and the one side surface of the coffee stock solution storage portion in an elliptical shape; And a second reflector that surrounds the spiral transparent tube and the other side edge of the coffee stock solution storage portion in an elliptical shape, wherein the first and second reflector plates are formed with coolant passages at regular intervals.

The pulverized coffee storage unit may include a plurality of openings formed at a predetermined interval on a side surface of the inner container, the number of openings being reduced from the upper portion to the lower portion, And an outer container enclosing the inner container at regular intervals and delivering the water supplied from the second water pressure regulator to the plurality of openings.

According to another aspect of the present invention, there is provided a coffee extracting apparatus for extracting coffee by a low-temperature extraction method in an enclosed space inside a heat insulating frame, the coffee extracting apparatus comprising: a water filter connected to a water supply pipe, A water pressure regulator for shutting off water supply when the pressure of water supplied from the water supply pipe is equal to or higher than a set pressure; A distribution manifold for distributing water supplied from the water filter section to a plurality of output valves; A plurality of pulverized coffee storages for delivering water sprayed from an output valve assigned to the plurality of output valves, and delivering the extracted coffee raw material to the lower portion; A plurality of spiral transparent tubes for delivering the coffee raw stock extracted from the plurality of pulverized coffee storage parts to an assigned coffee raw solution storage part of a plurality of coffee raw solution storing parts; Wherein the compressor and the heat sink are disposed outside the heat insulating frame, and the evaporator for lowering the ambient temperature is disposed inside the heat insulating frame, wherein the evaporator is in contact with the water pressure regulator, the water filter, A cooling unit arranged to cool the inside of the heat insulating frame based on a sensed temperature of a temperature sensor that senses a temperature of water in the distribution manifold; A plurality of ultraviolet lamps disposed between the plurality of coffee raw-material storage units; And a reflector which surrounds the plurality of helical transparent tubes and the plurality of coffee raw-fluid storage portions in an elliptical shape and reflects ultraviolet rays emitted from the plurality of ultraviolet lamps to the plurality of helical transparent tubes and the plurality of coffee raw- A coffee extracting apparatus is provided.

The coffee extracting apparatus may further include a control unit for controlling an internal operation of the coffee extracting apparatus, wherein the control unit controls the opening and closing operations of the coffee extracting apparatus in order to sequentially open the plurality of output valves, And then the next output valve is opened.

The coffee extracting apparatus may further include a controller for controlling an internal operation of the coffee extracting apparatus, wherein the controller detects the ultraviolet intensity of the plurality of ultraviolet lamps as a result of temperature sensing of the temperature sensor, And is strongly controlled.

In addition, the controller may control the cooling unit to maintain the temperature of the water in the distribution manifold to a set temperature of between 0 and 8 degrees centigrade.

The coffee extracting apparatus may further comprise an air filter; And an internal blower for circulating the cold air.

The water pressure regulating unit is connected to the water supply pipe and supplies water to the water filter unit while maintaining the water pressure of the water to be supplied to the water filter unit. 1 water pressure regulator; And a second water pressure regulator for further reducing the pressure of the water passing through the water filter portion and delivering the reduced pressure to the distribution manifold.

The reflector may include: a first reflector that surrounds the plurality of helical transparent tubes and one side surface of the plurality of coffee raw-material containers in an elliptical shape; And a second reflector that surrounds the plurality of helical transparent tubes and the outer surface of the other side of the coffee stock solution storage portion in an elliptical shape, wherein the first and second reflector plates are formed with coolant passages at regular intervals do.

Each of the plurality of pulverized coffee storage parts has a plurality of openings formed at a predetermined interval in a side part thereof, the number of openings being reduced from the upper part to the lower part, and an inner container for storing the ground coffee; And an outer container enclosing the inner container at regular intervals and transferring water supplied from the assigned output valve to the plurality of openings.

The coffee extracting apparatus according to the embodiment of the present invention can prevent contamination while extracting coffee using the sterilizing effect of the ultraviolet lamp.

In addition, since the impurities are removed through the water filter, the water is kept at a constant pressure, and water of a certain temperature is supplied to extract the coffee stock solution, even if it is extracted using low temperature water for a long time, The unique taste and flavor of the ripening can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a conventional coffee extracting apparatus of a low temperature extraction type. FIG.
2 is a front view showing a coffee extracting apparatus of a low temperature extraction type according to an embodiment of the present invention.
Fig. 3 is a side view of the coffee extracting apparatus of the low temperature extraction system of Fig. 2; Fig.
4 is a partial cross-sectional view of the coffee extracting apparatus of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention.

2 is a front view showing a low temperature extraction type coffee extracting apparatus 1 according to an embodiment of the present invention, FIG. 3 is a side view of the low temperature extraction type coffee extracting apparatus 1 of FIG. 2, 1 is a partial cross-sectional view of a coffee extracting apparatus 1 of a low temperature extraction type.

The coffee extracting apparatus 1 according to the present embodiment includes only a simple structure for clearly explaining the technical idea to be proposed.

2 to 4, an outer frame of the coffee extracting apparatus 1 for extracting coffee in a low-temperature extraction mode in a closed space inside the heat insulating frame 110 includes a heat insulating frame 110, (120) and a second lower region (130). Elements for extracting coffee are disposed inside the heat insulating frame 110.

The first lower region 120 is provided with a compressor 810 constituting a cooling unit and the second lower region 130 is provided with a heat radiating plate 820 constituting a cooling unit. Particularly, the evaporator 830 constituting the cooling part is provided inside the heat insulating frame 110. Although not shown in the drawings, the cooling section including the compressor 810, the heat sink 820, and the evaporator 830 are connected to each other through the inner pipe. Also, the condensed water generated during operation of the cooling unit is designed to flow around the compressor 810, and is configured to be able to spontaneously evaporate.

The heat insulating frame 110 includes a heat insulating material having a predetermined thickness, and elements for extracting coffee are disposed inside the heat insulating frame 110. A distribution manifold 400 having water pressure regulating units 310 and 320 and a plurality of output valves 410, 420, 430 and 440, a plurality of pulverized coffee storage units 510, 520, 530 and 540, A water filter 210, a water filter 220, a temperature sensor 230, a control unit 240, an air filter 250, and a plurality of coffee raw material storage units 710, 720, 730, and 740, And an internal blower 260 are disposed.

The detailed configuration and main operation of the coffee extracting apparatus 1 having the above-described low temperature extraction type will be described below.

The water pressure regulating units 310 and 320 are connected to the water supply pipe 210 and supply the water pressure to the water filter unit 220 while keeping the water pressure of the supplied water constant. The water pressure regulating units 310 and 320 include a first water pressure regulator 310 and a second water pressure regulator 320. The first water pressure regulator 310 is connected to the water supply pipe 210, And supplies it to the water filter unit 220 while keeping it constant. The first water pressure regulator 310 is basically configured to reduce the water pressure of the water supplied from the water supply pipe 210, but the pressure of the water supplied from the water supply pipe 210 is too low to operate the coffee extracting apparatus 1 If not, the hydraulic pressure may be increased to a certain level.

In addition, when the pressure of the water supplied from the water supply pipe 210 is equal to or higher than the set pressure, the first water pressure regulator 310 blocks the water supply so that when the high pressure water is supplied through the water supply pipe 210, .

The second water pressure regulator 320 further reduces the pressure of water that has passed through the water filter unit 220 and transfers the pressure to the distribution manifold 400 so that the pressure of the water supplied to the distribution manifold 400 is maintained at a constant level . For reference, the second water pressure regulator 320 is an element that can be selectively provided according to the embodiment.

The distribution manifold 400 distributes the water supplied from the water filter section 220 or the second water pressure regulating section 320 to the plurality of output valves 410, 420, 430, 440. The distribution manifold 400 is basically configured to supply substantially the same pressure of water to each of the plurality of output valves 410, 420, 430, and 440. Referring to FIG. 2, the first to fourth output valves 410, 420, 430 and 440 are illustrated in the front direction. In more detail, the first output valve 410 has a spray nozzle 411 at the end of the first output valve 410, and water sprayed from the spray nozzle 411 is uniformly sprayed. For example, the water sprayed from the spray nozzle 411 may be in the form of mist or scattered so that the parts of the spray nozzle 411 rotate. For reference, the distribution manifold 400 may be made of stainless steel or aluminum material having a high thermal conductivity, and may be made of a tempered glass material if necessary.

A plurality of pulverized coffee storage units 510, 520, 530, and 540 are respectively supplied to the plurality of output valves 410, 420, 430, and 440 from the upper portion of the water sprayed from the assigned output valves. In the plurality of ground coffee holders 510, 520, 530, and 540, the coffee stock solution is extracted while the water supplied from above is moved downward by gravity, and the extracted coffee stock solution moves downward. It is preferable that the plurality of ground coffee storage units 510, 520, 530, and 540 have an elliptical shape elongated in the vertical direction so that coffee can be smoothly extracted. That is, when the crushed coffee storage part is made into a thin and long shape, the extraction efficiency is enhanced, and possibility of contamination by air and water evaporation can be suppressed.

Meanwhile, the first pulverized coffee storage unit 510 among the plurality of pulverized coffee storage units 510, 520, 530, and 540 will be described in detail below.

The first ground coffee storage section 510 includes an inner container 51 and an outer container 52. [ The inner container 51 is a place for storing the ground coffee, and has a plurality of openings formed at regular intervals on the side portions thereof. The plurality of openings are formed such that the number decreases from the top to the bottom. The outer vessel 52 surrounds the inner vessel 51 at regular intervals and transfers the water supplied from the first output valve 410 to the plurality of openings. That is, the water supplied from the first output valve 410 is basically sprayed to the upper portion of the inner vessel 51, and further sprayed into the space between the inner vessel 51 and the outer vessel 52. At this time, the water sprayed into the space between the inner container 51 and the outer container 52 is supplied to the side surface through the opening formed in the inner container 51. As a result, since water is supplied to the upper and side portions of the ground coffee stored in the inner vessel 51, water can be supplied more uniformly. In addition, a plurality of openings formed in the inner vessel 51 are formed so as to be formed more on the upper portion than the lower portion, so that relatively more water is supplied to the upper portion.

The plurality of helical transparent tubes 610, 620, 630, and 640 deliver the coffee ground liquid extracted from the plurality of ground coffee storages 510, 520, 530, and 540 to a plurality of coffee concentrate storage units 710, 720, 730, The plurality of helical transparent tubes 610, 620, 630, and 640 may be formed of a transparent glass or plastic material, and may be additionally coated with a material capable of transmitting ultraviolet rays.

The cooling unit includes a compressor 810, a heat sink 820 and an evaporator 830. The compressor 810 and the heat sink 820 are disposed outside the heat insulating frame 110, The portion 830 is disposed inside the heat insulating frame 110.

Particularly, since the evaporator 830 is disposed in contact with the water pressure regulating units 310 and 320, the water filter unit 220, and the dispensing manifold 400, the supplied water can be cooled more quickly and efficiently. The cooling unit cools the inside of the heat insulating frame on the basis of the sensed temperature of the temperature sensor 230 that senses the temperature of the water inside the distribution manifold 400. [ The control unit 240 may control the cooling unit so that the temperature of the water inside the dispensing manifold 400 may be controlled by the temperature of the water in the dispensing manifold 400. [ It can be adjusted to maintain the set temperature among the temperatures between 0 and 8 degrees. That is, according to the setting of the control unit 240, the temperature of the water inside the distribution manifold 400 can be selected from a temperature between 0 and 8 degrees Celsius.

A plurality of ultraviolet lamps (910, 920, 930, 940, 950) are disposed between the plurality of coffee liquid stockers (710, 720, 730, 740). It is preferable that the plurality of ultraviolet lamps 910, 920, 930, 940, and 950 are formed to be long in the vertical direction so as to correspond to the height of the spiral transparent tube and the stock solution storage portion.

The reflectors 960 and 970 are arranged to surround the plurality of spiral transparent tubes 610, 620, 630 and 640 and a plurality of coffee raw material storage parts 710, 720, 730 and 740 in an elliptical shape. Reflecting plates 960 and 970 reflect ultraviolet rays emitted from the plurality of ultraviolet lamps 910, 920, 930, 940 and 950 to a plurality of helical transparent tubes 610, 620, 630 and 640 and a plurality of coffee raw material reservoirs 710, 720, 730 and 740, Sterilize the coffee stock solution in the coffee raw stock storage part (710, 720, 730, 740). The reflectors 960 and 970 are preferably provided with a metal reflector in terms of durability enhancement.

Referring to FIGS. 3 and 4, the reflection plates 960 and 970 include a first reflection plate 960 and a second reflection plate 970. The first reflector 960 surrounds a plurality of spiral transparent tubes 610, 620, 630, and 640 and a plurality of coffee stock solution storage portions 710, 720, 730, and 740 in a elliptical shape. In addition, the second reflector 970 surrounds a plurality of spiral transparent tubes 610, 620, 630, and 640 and a plurality of outlets of the coffee liquid stocks 710, 720, 730, and 740 in an elliptical shape. Since the first reflector 960 and the second reflector 970 form a cool air passage at predetermined intervals, the ultraviolet rays are transmitted through the plurality of helical transparent tubes 610, 620, 630, 640 and the plurality of coffee raw- ). ≪ / RTI >

Meanwhile, the coffee extracting apparatus 1 may further include an air filter 250 for filtering the fine dust therein, and an internal blower 260 for uniformly circulating the cool air. The air filter 250 may include a HEPA filter and an activated carbon filter for removing odors, and the internal blower 260 may include an air blower 260 for circulating the air through the outside of the closed space inside the heat insulating frame 110 Adjust the flow. For example, the inner blower 260 may blow air on the upper side while blowing strong wind to the lower part, so that the flow of air may be formed in an elliptical shape along the inside of the heat insulating frame 110. Further, if necessary, additional blowers may be disposed around the plurality of coffee raw-material storage units 710, 720, 730, and 740 disposed below the heat-insulating frame 110 to keep the flow of cool air smoothly.

The coffee extracting apparatus 1 may further include a controller 240 for controlling an internal operation of the coffee extracting apparatus 1. The controller 240 sequentially opens the plurality of output valves 410, 420, 430, and 440 to spray water, Keep the water pressure of the valve the same. That is, after the control unit 240 closes the opened output valve, the control unit 240 opens the next output valve.

turn The first output valve The second output valve The third output valve The fourth output valve One ON OFF OFF OFF 2 OFF ON OFF OFF 3 OFF OFF ON OFF 4 OFF OFF OFF ON

Referring to Table 1, the sequential opening order of the first to fourth output valves 410, 420, 430, and 440 is shown. As described above, the first to fourth output valves 410, 420, 430, and 440 are sequentially opened, and the plurality of output valves 410, 420, 430, and 440 inject water. For reference, the fifth to eighth output valves are further provided in this embodiment, but the description of the opening and closing operations of the fifth to eighth output valves is omitted for the sake of brevity.

As a result of the temperature sensing of the temperature sensor 230, the control unit 240 can strongly control ultraviolet intensity of the plurality of ultraviolet lamps 910, 920, 930, 940, and 950 as the temperature increases. That is, basically, the temperature of the inside is set to be between 0 and 8 degrees Celsius. As the temperature increases, the possibility of oxidation of the coffee stock solution increases, so that the sterilization power can be improved by increasing the intensity of ultraviolet rays.

Further, the control unit 240 determines the opening / closing time of the plurality of output valves 410, 420, 430, and 440, the injection pressure of the water, and the overall system operation time so that the coffee liquid can be extracted within a predetermined time.

In addition, the control unit 240 may control the coffee extracting apparatus 1 to operate in the normal mode and the rapid mode. In the normal mode, the coffee extraction operation is performed while sequentially opening the plurality of output valves 410, 420, 430, and 440 one by one as described above. In the rapid mode, the coffee extraction operation is rapidly performed while sequentially opening the two or more output valves simultaneously.

In the present embodiment, the internal temperature is set based on the temperature sensor 230 for sensing the temperature of the inside of the distribution manifold 400. However, the lower temperature sensor may be additionally provided around the plurality of coffee raw material reservoirs 710, 720, 730, And the control unit 240 may be configured to set the operating temperature of the system based on the lower temperature sensor. In addition, the controller 240 may set the operating temperature of the system based on the average temperature in consideration of the temperature sensor 230 and the lower temperature sensor. When both the temperature sensor 230 and the lower temperature sensor are provided, the ultraviolet intensities of the plurality of ultraviolet lamps 910, 920, 930, 940 and 950 may be controlled to operate in conjunction with the lower temperature sensor.

Meanwhile, in the above-described embodiment, in order to extract a large amount of coffee from a coffee shop or the like, a distribution manifold 400 having a plurality of output valves 410, 420, 430 and 440, a plurality of ground coffee storage units 510, 520, 530 and 540, 620, 630, and 640, and a plurality of coffee stock solution storage units 710, 720, 730, and 740 are described.

However, in order to extract a small amount of coffee into households, the dispensing manifold 400 is not provided, and water is directly sprayed from the second water pressure regulating portion 320 or the water filter portion 220 to one of the crushed coffee storage portions . In this configuration, the injection nozzle must be provided at the end of the second water pressure regulating part or the water filter part.

The coffee extracting apparatus for extracting a relatively small amount of coffee in this way is basically the same in internal operation as the coffee extracting apparatus 1 shown in Figs. 2 to 4, except that the dispensing manifold 400 is omitted A plurality of elements are replaced by one element.

That is, the coffee extracting apparatus includes a first water pressure regulating unit, a second water pressure regulating unit, a crushed coffee storage unit, a spiral transparent tube, a cooling unit, an ultraviolet lamp, and a reflector.

The first water pressure regulating unit is connected to the water supply pipe and supplies water to the water filter unit while maintaining the water pressure of the water to be supplied constantly. When the pressure of the water supplied from the water supply pipe is equal to or higher than the set pressure, the water supply is cut off. In addition, the second water pressure regulator further reduces the pressure of the water passing through the water filter portion.

The pulverized coffee storage part receives the water sprayed from the second water pressure regulating part or the water filter part from the upper part and delivers the extracted coffee raw solution to the lower part. The pulverized coffee storage part is provided with a plurality of openings at regular intervals on the side part, wherein the number of the openings decreases from the upper part to the lower part, and the inner container for storing the ground coffee and the second pressure regulating part And an outer vessel for transmitting water supplied from the water filter unit to a plurality of openings.

In addition, the spiral transparent tube conveys the coffee ground liquid extracted from the ground coffee holding portion to the coffee ground liquid storing portion.

Further, the cooling section includes a compressor, a heat sink, and an evaporator, wherein the compressor and the heat sink are disposed outside the heat insulating frame, and the evaporator for lowering the ambient temperature is disposed inside the heat insulating frame. The evaporator is disposed in contact with the first and second water pressure regulating units and the water filter unit and cools the inside of the heat insulating frame based on the temperature sensed by the temperature sensor that senses the water temperature of the second water pressure regulating unit.

In addition, the ultraviolet lamp is disposed adjacent to the coffee raw material storage portion, and the reflector surrounds the outer periphery of the spiral transparent tube and the coffee raw material storage portion in an elliptical shape, and reflects ultraviolet rays emitted from the ultraviolet lamp to the spiral transparent tube and the coffee raw material storage portion.

The reflector may be composed of a first reflector for enclosing the spiral transparent tube and the one side outer portion of the coffee raw solution storage portion in an elliptic shape, a second reflector for enclosing the outer side of the spiral transparent tube and the other side of the coffee solution storage portion in an elliptical shape, The first and second reflector plates are provided with coolant passages at regular intervals.

The coffee extracting apparatus may further include a controller for controlling an internal operation of the coffee extracting apparatus. The controller may control the ultraviolet intensity of the ultraviolet lamp as the temperature increases as a result of temperature sensing of the temperature sensor.

As described above, the coffee extracting apparatus of the low temperature extraction type according to the embodiment of the present invention can prevent the contamination during the extraction of the coffee using the sterilizing effect of the ultraviolet lamp.

In addition, since the impurities are removed through the water filter, the water is kept at a constant pressure, and water of a certain temperature is supplied to extract the coffee stock solution, even if it is extracted using low temperature water for a long time, The unique taste and flavor of the ripening can be maintained.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1: coffee extracting device 110: insulating frame
120: first lower region 130: second lower region
210: water pipe 220: water filter part
230: temperature sensor 240:
250: air filter 260: internal blower
310: first pressure regulator 320: second pressure regulator
400: distribution manifold 410, 420, 430, 440: output valve
411: jet nozzles 710, 720, 730, 740:
51: inner vessel 52: outer vessel 910: first ultraviolet lamp
610,620,630,640: Spiral transparent tube 610: First spiral transparent tube
710, 720, 730, 740: Coffee stock solution storage section 810: Compressor
820: Heat sink 910, 920, 930, 940, 950: Ultraviolet lamp

Claims (12)

A coffee extracting apparatus for extracting coffee by a low-temperature extraction method in an enclosed space inside an adiabatic frame,
A first water pressure regulating unit connected to the water supply pipe and supplying water to the water filter unit while maintaining the water pressure of the water to be supplied constantly to shut off water supply when the pressure of water supplied from the water supply pipe is equal to or higher than a set pressure;
A second water pressure regulator for further reducing the pressure of the water passing through the water filter portion;
A pulverized coffee storage part for receiving water sprayed from the second water pressure regulating part and delivering the extracted coffee raw fluid to the lower part;
A spiral transparent tube for delivering the coffee raw stock extracted from the ground coffee storage part to the coffee raw stock storage part;
Wherein the compressor and the heat sink are disposed outside the heat insulating frame, and the evaporator for lowering the ambient temperature is disposed inside the heat insulating frame, wherein the evaporator is in contact with the first and second water pressure regulating portions, A cooling unit arranged to cool the inside of the heat insulating frame based on a sensed temperature of a temperature sensor that senses a temperature of water in the second water pressure regulating unit;
An ultraviolet lamp disposed adjacent to the coffee stock solution storage section;
A spiral transparent tube, and a reflector for wrapping the outside of the coffee raw material storage part in an elliptic shape and reflecting the ultraviolet rays emitted from the ultraviolet lamp to the spiral transparent tube and the coffee raw solution storage part; And
And a control unit for controlling an internal operation of the coffee extracting apparatus,
Wherein the controller controls the ultraviolet intensity of the ultraviolet lamp as the temperature increases as a result of the temperature sensor sensing the temperature of the ultraviolet lamp.
delete The method according to claim 1,
The reflector includes:
A first reflector for enclosing the spiral transparent tube and the one side outer portion of the coffee stock solution storage portion in an elliptic shape; And
And a second reflector for enclosing the outer side of the spiral transparent tube and the other side of the coffee stock solution storage portion in an elliptical shape, wherein the first and second reflector plates are formed with cool air passages at regular intervals.
The method according to claim 1,
Wherein the pulverized coffee storage part comprises:
A plurality of openings are formed at regular intervals on a side surface of the inner container, and the number of openings decreases from the top to the bottom; And
And an outer container enclosing the inner container at regular intervals and delivering water supplied from the second water pressure regulating portion to the plurality of openings.
A coffee extracting apparatus for extracting coffee by a low-temperature extraction method in an enclosed space inside an adiabatic frame,
A water pressure regulating unit connected to the water supply pipe and supplying water to the water filter unit while maintaining the water pressure of the supplied water at a constant level;
A distribution manifold for distributing water supplied from the water filter section to a plurality of output valves;
A plurality of pulverized coffee storages for delivering water sprayed from an output valve assigned to the plurality of output valves, and delivering the extracted coffee raw material to the lower portion;
A plurality of spiral transparent tubes for delivering the coffee raw stock extracted from the plurality of pulverized coffee storage parts to an assigned coffee raw solution storage part of a plurality of coffee raw solution storing parts;
Wherein the compressor and the heat sink are disposed outside the heat insulating frame, and the evaporator for lowering the ambient temperature is disposed inside the heat insulating frame, wherein the evaporator is in contact with the water pressure regulator, the water filter, A cooling unit arranged to cool the inside of the heat insulating frame based on a sensed temperature of a temperature sensor for sensing a temperature of water in the distribution manifold;
A plurality of ultraviolet lamps disposed between the plurality of coffee raw-material storage units;
A reflector for wrapping the plurality of helical transparent tubes and the plurality of coffee raw-fluid storage portions in an elliptic shape and reflecting the ultraviolet rays emitted from the plurality of ultraviolet lamps to the plurality of helical transparent tubes and the plurality of coffee raw-fluid storage portions; And
And a control unit for controlling an internal operation of the coffee extracting apparatus,
Wherein the control unit opens the next output valve after closing the opened output valve in order to sequentially open the plurality of output valves and inject water.
delete 6. The method of claim 5,
Wherein the controller controls the intensity of ultraviolet light of the plurality of ultraviolet lamps as the temperature increases as a result of temperature detection by the temperature sensor.
8. The method of claim 7,
Wherein the control unit controls the cooling unit to maintain the temperature of the water in the distribution manifold at a set temperature of between 0 and 8 degrees centigrade.
6. The method of claim 5,
The coffee extracting apparatus comprises:
Air filters; And
And an internal blower for circulating the cold air.
6. The method of claim 5,
The water pressure-
A first water pressure regulating unit connected to the water supply pipe and supplying water to the water filter unit while maintaining a water pressure of the water to be supplied, when the pressure of the water supplied from the water supply pipe is equal to or higher than a set pressure; And
And a second water pressure regulator for further reducing the pressure of the water passing through the water filter unit and delivering the reduced pressure to the distribution manifold.
6. The method of claim 5,
The reflector includes:
A first reflector that surrounds the plurality of helical transparent tubes and one side of the plurality of coffee stock solution storing portions in an elliptical shape; And
A plurality of spiral transparent tubes, and a second reflector for covering the outer surface of the other side of the coffee stock solution storage part in an elliptic shape, wherein the first and second reflector plates are formed with coolant passages at regular intervals Coffee extractor.
6. The method of claim 5,
Wherein the plurality of pulverized coffee storage portions each comprise:
A plurality of openings are formed at regular intervals on a side surface of the inner container, and the number of openings decreases from the top to the bottom; And
And an outer container enclosing the inner container at regular intervals and delivering water supplied from the assigned output valve to the plurality of openings.

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