WO2018159958A1 - Coffee extracting apparatus and coffee extracting method using same - Google Patents

Coffee extracting apparatus and coffee extracting method using same Download PDF

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Publication number
WO2018159958A1
WO2018159958A1 PCT/KR2018/002214 KR2018002214W WO2018159958A1 WO 2018159958 A1 WO2018159958 A1 WO 2018159958A1 KR 2018002214 W KR2018002214 W KR 2018002214W WO 2018159958 A1 WO2018159958 A1 WO 2018159958A1
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WO
WIPO (PCT)
Prior art keywords
coffee
extraction chamber
extraction
atmospheric pressure
vacuum
Prior art date
Application number
PCT/KR2018/002214
Other languages
French (fr)
Korean (ko)
Inventor
배순철
이정현
Original Assignee
훼스텍 주식회사
배순철
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170026220A external-priority patent/KR101820018B1/en
Priority claimed from KR1020170094621A external-priority patent/KR101814535B1/en
Application filed by 훼스텍 주식회사, 배순철 filed Critical 훼스텍 주식회사
Publication of WO2018159958A1 publication Critical patent/WO2018159958A1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
    • A47J31/469—Details of hydraulic circuits
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/32—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under air pressure
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices

Definitions

  • the present invention relates to a coffee extracting apparatus for extracting liquid from coffee powder and a coffee extracting method using the same, the solubility extracted from the coffee powder by switching the interior of the extraction chamber to vacuum, atmospheric pressure, and pressurized state after the coffee powder is called It relates to a coffee extraction device having a flavor component and a coffee extraction method using the same.
  • a method of extracting coffee from the coffee powder obtained by grinding coffee beans is various as follows.
  • the method of using an espresso machine the method of using a gravity filter to put a paper filter in a funnel, pour coffee powder, and pour hot water into a kettle to extract coffee, and the aeropress of extracting coffee by applying a filter to a container and pressurizing it with a piston.
  • Method US Patent US 2006/0260471 A1
  • the coffee pot is made into two layers, water is injected into the lower layer, coffee powder and funnel is installed on the upper layer, and heat is applied to the coffee while the lower layer water passes through the upper funnel. Moka pot method is extracted.
  • the present invention is called coffee powder or dried tea leaves in a pressurized state, and then called in a vacuum state and then converted to atmospheric pressure to be included in the coffee powder or tea leaves. It is an object of the present invention to provide a coffee extraction device and a coffee extraction method using the same, which can effectively discharge the flavor component from the coffee powder or tea leaves.
  • the present invention comprises the steps of injecting the coffee powder into the extraction chamber; Injecting hot water into the extraction chamber; Pressurizing the inside of the extraction chamber to soak the coffee powder in a precipitated state; Switching the inside of the extraction chamber to an atmospheric pressure state; A vacuum step of converting the inside of the extraction chamber into a vacuum state in order to increase the size of the coffee powder to infiltrate hot water into the pores of the coffee powder; And converting the inside of the extraction chamber into an atmospheric pressure state such that water penetrating the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder. to provide.
  • the pressing step may be repeated at least twice.
  • the vacuum step may be repeated at least two times.
  • an additional pressurizing step of pressing the inside of the extraction chamber to call the coffee powder in the precipitated state may further include.
  • the pressing step may include: a first pressing step of pressing the inside of the extraction chamber after the first hot water input; Converting the inside of the extraction chamber to an atmospheric pressure state after the first pressurization step; And a second pressurizing step of pressurizing an inner side of the extraction chamber after inputting a larger amount of secondary warm water than primary warm water.
  • the present invention comprises the steps of injecting the coffee powder into the extraction chamber; A first pressurizing step of putting primary hot water into the extraction chamber and pressing the inside of the extraction chamber to soak the coffee powder in a precipitated state; A second pressurizing step of inputting a larger amount of secondary hot water than the amount of the primary hot water into the extraction chamber, and applying pressure to the inside of the extraction chamber so that the coffee powder is called in a precipitated state; A first vacuum step of converting the inside of the extraction chamber to an atmospheric pressure state and then converting the vacuum chamber into a vacuum state in order to forcibly infiltrate hot water into the pores of the coffee powder; A third pressurizing step of applying a pressure to the inside of the extraction chamber to turn the inside of the extraction chamber into an atmospheric pressure state and to soak the coffee powder in the settled state; A second vacuum step of converting the inside of the extraction chamber into an atmospheric pressure state and then converting the vacuum chamber into a vacuum state to force hot water into the pores of the coffee powder; After converting the inside of the extraction chamber to an
  • the present invention also provides an extraction chamber; A piston moving along the inside of the extraction chamber and having a discharge port for discharging coffee; A drive cylinder for reciprocating the piston; A drive cover having a sealing housing for moving up and down to open and close the opening of the extraction chamber; A driving unit for driving the driving cover left and right; A pressure controller for changing the inside of the extraction chamber to any one of an atmospheric pressure state, a pressurized state, and a vacuum state; A boiler for storing hot water for supplying into the extraction chamber through the sealing housing; A coffee discharge line through which coffee is discharged from the extraction chamber; And a coffee extraction valve configured to open and close the coffee discharge line, thereby achieving the above object.
  • the drive cover may be provided with a scraper for moving the coffee cake to the outside.
  • the drive cover may be moved to a first position corresponding to the coffee cake inlet for removing the coffee cake and to a second position corresponding to the opening of the extraction chamber.
  • the sealing housing is lowered by a third position which opens the opening of the extraction chamber by the elastic force of the elastic member provided in the drive cover, and by the air pressure supplied between the drive cover and the sealing housing by the pressure adjusting unit.
  • a fourth position may be moved to close the opening of the extraction chamber.
  • the pressure control unit is an air supply valve for maintaining a pressurized state for a set time by applying a set pressure to the interior of the extraction chamber into which the coffee powder and hot water are added;
  • a vacuum valve which maintains a vacuum state for a set time by converting the inside of the extraction chamber into a vacuum state of a set size;
  • Atmospheric pressure valve to maintain the inside of the extraction chamber in the atmospheric pressure state for a predetermined time by switching from the pressurized state or vacuum state to the atmospheric pressure state;
  • a controller for automatically controlling each valve according to a set order and time.
  • the extraction process using the extraction device is a coffee extraction chamber using compressed air from an air compressor driven by a control unit for automatically controlling a plurality of pressure regulating valves according to a set order and time
  • a coffee extraction device for extracting the soluble flavor component contained in the coffee powder in the extraction chamber through the process of switching the interior of the vacuum, atmospheric pressure or pressurized state, wherein the coffee powder and water is extracted
  • a second process of turning on the coffee settling air supply valve controlling the flow of air supplied by the compressor and supplying the pressure to the inside of the extraction chamber through the first air nozzle provided in the driving cover to increase the pressure;
  • the first step is the eleventh step of placing the drive cover at the upper inlet of the extraction chamber; Step 12 of supplying the air pressure between the upper surface of the sealing housing provided on the inside of the drive cover through the second air nozzle as the sealing housing drive valve is turned on under the control of the controller; And a step 13 of sealing the extraction chamber by lowering the sealing housing by the air pressure supplied through the second air nozzle.
  • the air in the extraction chamber is discharged to the outside between the vacuum valves by the air pressure supplied from the compressor as the respective vacuum valves are turned on.
  • the eighth step is a step 21 of opening the coffee receiving unit by turning on the coffee extraction valve; Turning on the coffee settling air supply valve to supply air to the extraction chamber to pressurize the coffee downward for a predetermined time; And turning off the coffee settling air supply valve and the coffee extraction valve after discharging the coffee to the outside through the coffee nozzle in step 22.
  • the eighth process is a 31 step of opening the coffee container by turning on the coffee extraction valve; Step 32 of raising the piston unit provided at the lower end of the extraction chamber at a set speed to maintain the inside of the extraction chamber at a set pressure; Step 33 of turning off the coffee extraction valve and turning on the atmospheric pressure valve when the piston unit is lifted and the coffee is discharged to the outside; And 34 steps of lowering the piston unit to its original position.
  • the extracting chamber is the 51 step of turning off the sealing housing drive valve under the control of the controller in the atmospheric pressure state; Step 52, in which air between the driving cover and the sealing housing is discharged to raise the sealing housing; A step 53 of turning on the piston drive valve to raise the piston unit to the first position of the upper end of the extraction chamber to move the coffee cake to the outside of the extraction chamber; And moving the drive cover laterally to move the coffee cake to the collection vessel by a scraper coupled to the bottom of the drive cover.
  • the coffee or tea having a deep flavor can be obtained by effectively extracting the soluble flavor component contained in the coffee powder or the tea leaf.
  • FIG. 1 is a block diagram showing a coffee extraction device according to an embodiment of the present invention
  • FIG. 2 is a perspective view showing a coffee extraction device according to an embodiment of the present invention
  • FIG. 3 is a pneumatic circuit diagram of a coffee extraction device according to an embodiment of the present invention.
  • 4 to 8 are flowcharts sequentially illustrating a coffee extraction process according to an embodiment of the present invention.
  • FIG. 9 is a flowchart sequentially illustrating a coffee extraction process according to an exemplary embodiment replacing FIG. 8.
  • 10 to 17 are schematic views sequentially illustrating respective processes of the coffee extraction process according to an embodiment of the present invention.
  • the present invention relates to a coffee or tea extraction device.
  • an apparatus and method for extracting coffee from coffee powder will be described.
  • the method of extracting tea from dried tea leaves through the apparatus for extracting coffee is the same. Therefore, hereinafter, only the extraction apparatus for extracting coffee from the coffee powder and the extraction method using the same will be described.
  • 'Coffee' referred to in the present invention means a liquid coffee containing a flavor component extracted from coffee powder mixed with hot water.
  • FIG. 1 is a perspective view showing a coffee extraction device according to an embodiment of the present invention
  • Figure 2 is a block diagram showing a coffee extraction device according to an embodiment of the present invention
  • Figure 3 according to an embodiment of the present invention Pneumatic circuit diagram of a coffee extraction device.
  • the coffee extracting apparatus 10 includes a coffee extracting unit 100 for extracting coffee from a mixture of hot water and coffee powder mixed therein, and an interior of the coffee extracting unit 100.
  • Compressor 200 for adjusting the air pressure, such as to pressurize the air or to switch to a vacuum state and atmospheric pressure state, and a pressure control unit 300 including a plurality of valves disposed on each element on the pneumatic circuit of the coffee extraction device 10 ).
  • the coffee extraction device 10 is a coffee extraction unit 100, the compressor 200 and the pressure control unit 300 to control the coffee extraction unit 100, the compressor 200 and the pressure control unit 300 And a controller 400 electrically connected to each other.
  • the controller 400 may be a micro controller unit (MCU).
  • the coffee extraction unit 100 includes a cabinet 101 that forms an exterior.
  • the compressor 200, the pressure regulator 300, and the controller 400 may be disposed inside the cabinet 101.
  • the upper plate 103 is disposed above the cabinet 101, and the driving cover 150 is disposed to be linearly moved left and right by the driving unit 160 (see FIG. 3) while being spaced apart from the upper plate 103. .
  • the top plate 103 is formed with a coffee cake inlet 104 for injecting the remaining coffee cake 3 (see FIG. 16) after the coffee is extracted.
  • a coffee cake collecting container 110 (see FIG. 10) may be disposed below the coffee cake inlet 104.
  • the cabinet 101 may form a door 102 on one side so that the coffee cake collecting container 110 can be drawn out from the inside of the cabinet 101.
  • a coffee powder inlet 105 for introducing coffee powder 1 (see FIG. 10) into the extraction chamber 120 is formed in the coffee plate inlet 104.
  • the coffee powder inlet 105 is also used as an outlet for discharging the coffee cake 3 from the extraction chamber 120.
  • An approximately cylindrical extraction chamber 120 is disposed below the coffee powder inlet 105.
  • a cup support 106 for supporting a cup is formed below the outside of the cabinet 101, and a coffee nozzle 107 through which the extracted coffee is discharged above the cup support 106 and a hot water button 109 by the user. When pressed, a hot water nozzle 108 through which hot water is discharged may be disposed.
  • the pneumatic cylinder 130 is disposed at the lower side of the extraction chamber 120, and the piston unit 140 of the pneumatic cylinder 130 may be lifted and disposed inside the extraction chamber 120.
  • the extraction chamber 120 may be disposed outside the band heater 121.
  • the heater 121 heats the extraction chamber 120 to prevent the temperature of the mixture of coffee powder and hot water contained in the extraction chamber 120 (hereinafter, referred to as 'mixture') during the extraction of coffee is lowered to prevent the extraction efficiency from decreasing. Can be.
  • the pneumatic cylinder 130 includes an upper limit switch 131 and a lower limit switch 132 for detecting the top dead center and the bottom dead center of the piston unit 140, respectively.
  • the upper and lower limit switches 131 and 132 transmit detection signals to the controller 400.
  • the controller 400 controls the valve to stop driving in the upward direction or the downward direction of the piston unit 140 when each detection signal is received.
  • the piston unit 140 has a filter 141 is disposed at the top for filtering the mixture.
  • the filter 141 may include a metal filter having a plurality of small holes and a paper filter seated on the upper surface of the metal filter. Metal filters are used semi-permanently, while paper filters are used for single use.
  • the piston unit 140 is formed below the filter 141, the liquid receiving the filtered mixture, that is, the coffee receiving unit 143 is accommodated.
  • the coffee receiving portion 143 may be formed in a substantially cone shape, and the coffee discharge line 145 for discharging the coffee to the outside of the piston unit 140 is connected.
  • the piston unit 140 is provided with a one-way valve 140a for discharging the coffee from the coffee container 143 to the coffee discharge line 145 and preventing the coffee from being transferred in the reverse direction.
  • the driving cover 150 may be selectively moved to a position corresponding to any one of the coffee cake inlet 104 and the coffee powder inlet 105 by the driving unit 160. That is, when the coffee powder 1 is introduced into the extraction chamber 120, the driving cover 150 moves to a position corresponding to the coffee cake inlet 104, and at the time of coffee extraction, the position corresponding to the coffee powder inlet 105. Go to.
  • the driving cover 150 may be equipped with a scraper 152 for moving the coffee cake 3 to the coffee cake inlet 104 to the outside.
  • the driving cover 150 is disposed in the sealing housing 151 to move up and down.
  • the sealing housing 151 opens and closes the upper opening 120a of the brewing chamber 120, and forms a closed space for brewing coffee together with the brewing chamber 120.
  • This space is switched at atmospheric pressure during the step for brewing coffee. For example, it is switched from the atmospheric pressure state to the pressurized state, the pressurized state to the atmospheric pressure state, the atmospheric pressure state to the vacuum state, and the vacuum state to the atmospheric pressure state.
  • the sealing housing 151 receives an elastic force in a rising direction by a spring 153 disposed between the side of the driving cover 150 and the side of the sealing housing 151.
  • the sealing housing 151 is lowered by the air supplied between the inside of the drive cover 150 and the upper surface of the sealing housing 151 through the second air nozzle 157, which will be described later, to open the upper opening 120a of the extraction chamber 120. ) Close.
  • the air pressure in the space formed between the inside of the drive cover 150 and the upper surface of the sealing housing 151 is greater than the elastic force of the spring 153.
  • the sealing housing 151 is raised again by the elastic force of the spring 153.
  • sealing housing 151 is coupled to the first air nozzle 156 and the hot water supply nozzle 155 penetrating the upper portion.
  • the hot water supply nozzle 155 supplies hot water into the extraction chamber 120 with the sealing housing 151 closing the upper opening 120a of the extraction chamber 120.
  • the first air nozzle 156 supplies air into the extraction chamber 120 to increase the pressure inside the extraction chamber 120.
  • the first air nozzle 156 may supply air pressure into the extraction chamber 120.
  • the coffee powder 1 shrinks (see FIG. 15) and precipitates (see FIG. 13).
  • the precipitation of the coffee powder in the hot water may be effectively called.
  • the extraction chamber 120 may be in a vacuum state as all the air inside the extraction chamber 120 is discharged to the outside through the first air nozzle 156, and, conversely, the extraction chamber 120 is external to the first air nozzle 156.
  • In communication with the inside of the extraction chamber 120 may be placed at atmospheric pressure.
  • the inside of the extraction chamber 120 may be selectively in one of a pressurized state, a vacuum state, and an atmospheric pressure state.
  • the second air nozzle 157 is coupled to the driving cover 150, and supplies air between the inside of the driving cover 150 and the upper surface of the sealing housing 151 or vice versa.
  • the sealing housing 151 is lowered, and when the air is discharged, the sealing housing 151 is a spring ( It rises again by the elastic force of 153).
  • the drive unit 160 includes a motor 161, a drive belt 163 for transmitting the rotational force transmitted from the motor 161 to the drive cover 150, a moving block 164, and a left side of the drive cover 150. And a left limit switch 165 and a right limit switch 166 for detecting a right upper limit point.
  • the motor 161 may use a stepping motor capable of forward / backward rotation and controlling the rotation speed.
  • the moving block 164 slides along the LM guide 162 by the driving of the driving belt 163 and is connected to the driving cover 150 through the connecting bracket 168. Accordingly, the driving cover 150 may linearly move left and right with the moving block 164.
  • the coffee extraction unit 100 may be provided with a boiler 170 inside.
  • the boiler 170 may include a temperature sensor 171, a water level sensor 172, and a heater 173.
  • the boiler 170 is connected to the hot water spray nozzle 155 provided in the sealing housing 151 to supply hot water at a predetermined temperature into the extraction chamber 120.
  • the water stored in the boiler 170 may be supplied through a nozzle (faucet) 8 connected to the water source.
  • the raw water supply valve 311 controls the supply of raw water discharged from the nozzle 8 into the boiler 170.
  • a filter 9 may be disposed in a line connecting the nozzle 8 and the raw water supply valve 311.
  • the coffee extraction unit 100 may include an operation unit 181 and a temperature display unit 183 disposed in the cabinet 101.
  • the operation unit 181 may be formed as a capacitive or pressurized touch screen to input a user's command and display the current state.
  • the temperature display unit 183 may display the temperature of the hot water stored in the boiler 170 or may display the temperature inside the extraction chamber 120. In this case, the temperature display unit 183 reflects the temperature detected from the temperature sensor 171 for detecting the temperature of the stored water of the boiler 170 and the temperature sensor 171 for detecting the temperature inside the extraction chamber 120. .
  • reference numeral 210 is an air filter
  • 220 is an air tank
  • 230 is an air distributor connected to each valve.
  • the pressure regulator 300 may be provided with a plurality of valves as shown in FIG. The function of each valve is explained in the process of brewing coffee described below.
  • FIGS. 4 through 8 are flowcharts sequentially illustrating a coffee extraction process according to an embodiment of the present invention
  • FIGS. 10 to 17 are schematic views sequentially illustrating respective processes of the coffee extraction process according to an embodiment of the present invention. to be.
  • the coffee extraction mode is selected through the operation unit 181 for coffee extraction (S1).
  • the driving cover 150 moves to the first position, that is, the position corresponding to the coffee cake inlet 104 (S2).
  • the driving cover 150 waits at the first position until the coffee brewing continuing command is input through the operation unit 181.
  • the predetermined coffee powder 1 is introduced into the extraction chamber 120 through the coffee powder inlet 105 (S3).
  • the driving cover 150 moves from the first position to the second position as shown in FIG. 11 (S4).
  • the sealing housing driving valve 301 when the sealing housing driving valve 301 is turned on, the sealing housing 151 is turned inside the driving cover 150 as shown in FIG. 12 by the air pressure supplied between the driving cover 150 and the sealing housing 151. It descends along (S5). Accordingly, the opening 120a of the extraction chamber 120 is closed by the sealing housing 151. As the O-ring coupled to the bottom of the sealing housing 151 is in close contact with the surface of the upper plate 103, the inside of the extraction chamber 120 is kept airtight.
  • the coffee powder 1 floats due to buoyancy.
  • subsequent soaking of the coffee powder cannot be effectively performed. Therefore, the step of precipitating the coffee powder (1) in the primary hot water (5) as follows.
  • the soaking proceeds for t1 seconds while the coffee powder 1b is precipitated (S11).
  • the coffee powder is soaked through the soaking so as to more effectively extract the flavor component from the coffee powder in a subsequent vacuum step.
  • the atmospheric pressure valve 305 When the soaking is completed, the atmospheric pressure valve 305 is turned on for supplying the second hot water (S12), and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. At this time, the coffee powder is increased in size again in the state of the member number 1b as shown in FIG. Subsequently, the atmospheric pressure valve 305 is turned off after t seconds (S13).
  • the hot water supply valves 302 and 303 are turned on (S14), and a predetermined amount (for example, 200 cc) of secondary hot water 5a is extracted through the hot water supply nozzle 155 for t seconds. 120) supplied inward. After t seconds, when the hot water supply valves 302 and 303 are turned off (S15), the supply of the secondary hot water is stopped. In this case, the secondary hot water 5a and the first supplied hot water 5 are mixed with each other. Hereinafter, the mixed hot water is referred to as secondary hot water 5a for convenience of description.
  • the coffee precipitation air supply valve 304 is turned on (S16), and air is supplied into the extraction chamber 120 through the first air nozzle 156. Air is supplied until the inside of the extraction chamber 120 is a constant pressure (S17). When the inside of the extraction chamber 120 rises to a constant pressure, the coffee powder is reduced in size again and precipitates in the secondary hot water 5a as shown in FIG. 14. Subsequently, when the inside of the extraction chamber 120 reaches a constant pressure, the coffee settling air supply valve 304 is turned off (S18).
  • t2 seconds may be the same as or different from the aforementioned t1 seconds.
  • the atmospheric pressure valve 305 When the soaking is completed, the atmospheric pressure valve 305 is turned on (S20) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S21).
  • the vacuum valves 306 and 307 are turned on so that the extraction chamber 120 is in a vacuum state for the primary vacuum (S22), the air of the vacuum valve 306 is opened by the air pressure supplied from the compressor. Simultaneously with the discharge, the air in the extraction chamber 120 is discharged to the outside through the vacuum valve 307 and the valve (VG1), so that the pressure inside the extraction chamber 120 is gradually lowered to a constant pressure vacuum Reach the state (S23). Subsequently, the vacuum valves 306 and 307 are turned off to maintain the vacuum state (S24).
  • the first vacuum is called for t3 seconds.
  • t3 seconds may be the same as or different from the soak times t1 and t2 seconds in the advanced pressurization state.
  • the coffee powder 1a in the atmospheric pressure is increased in size and the pores are widened during the first vacuum soaking in the vacuum state. Accordingly, hot water penetrates into the pores inside the coffee powder 1c. As water penetrates the pores of the coffee powder 1c, air existing in the pores is discharged from the coffee powder 1c, and thus the secondary hot water (hereinafter, the secondary hot water is called 'coffee' because the coffee powder is sufficiently dissolved. ) Bubbles are formed.
  • the inside of the extraction chamber 120 is switched from the vacuum state to the atmospheric pressure state.
  • hot water penetrating the pores of the coffee powder 1c is discharged from the coffee powder 1c together with the soluble flavor component contained in the coffee powder 1c.
  • the coffee powder 1c may be larger than the size of the coffee powder 1a in its initial state as it is released through a process in which hot water is absorbed and then discharged. This increased coffee powder is difficult to return to its original size even when it is converted from the vacuum state to the atmospheric pressure state, and maintains the increased size through the vacuum state.
  • t3 seconds may be the same as or different from the aforementioned t1 and t2 seconds.
  • the atmospheric pressure valve 305 is turned on (S32) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S33).
  • a second vacuum soak is performed for t4 seconds.
  • t4 seconds may be the same as or different from the time (t3 seconds) of the first vacuum soaking.
  • water penetrates into the pores of the coffee powder as in the first vacuum soak described above.
  • t4 seconds may be the same as or different from the aforementioned t1 and t2 seconds.
  • the atmospheric pressure valve 305 is turned on (S44) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S45). At this time, the hot water penetrated into the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder.
  • the coffee extraction valve 308 is turned on to extract the coffee (S46), the coffee container 143 is opened, and the coffee settling air supply valve 304 is turned on (S47) of the extraction chamber 120.
  • the air is supplied to the inside to press down the coffee in which the coffee powder contained in the extraction chamber 120 is dissolved.
  • t5 seconds is the amount of time that most of the coffee in the extraction chamber 120 can be discharged.
  • the coffee extraction valve 308 is turned off (S50).
  • the piston drive valve 309 is turned on as shown in FIG. 16 to raise the piston unit 140 (S54).
  • the coffee cake 3 is moved out of the extraction chamber 120 by a piston.
  • the piston drive valve 309 is turned off to lower the piston unit 140 to its original position (S57), and the drive cover 150 is moved from the first position to the second position (S58).
  • the above coffee extraction step has been described as being discharged from the extraction chamber by the air pressure by supplying air to the extraction chamber 120, but is not limited thereto.
  • the volume of the brewing chamber 120 gradually decreases, and the coffee inside the brewing chamber 120 passes through the filter 141 and the coffee container 143 by the pressing force of the piston unit 140, and then the coffee nozzle 107. Through the coffee extraction device 10 is discharged.
  • step S51 of turning on the atmospheric pressure valve 305 in FIG. 8 may be omitted since the step S49 ′ of turning on the atmospheric pressure valve 305 of FIG. 9 is already present.
  • the present invention can extract coffee by pneumatic pressure or raise the piston to extract coffee by supplying air into the extraction chamber.
  • the present invention can vary the concentration of coffee by adjusting the temperature and pressure of the taste of the coffee to be extracted, and thus can be extracted into a mild taste with a rich taste (bitter taste) or flavor.
  • a mild taste with a rich taste (bitter taste) or flavor.
  • the pressing force is increased and the brewing time is increased.
  • the vacuum time is increased or the pressing force is increased.
  • the increase in time means to increase the time of the step, that is, the pressing force, or to increase the total of the total times by performing the pressing force step several times.
  • the coffee extracting apparatus 10 of the present invention turns on the hot water valve 310 connected to the boiler 170 while the hot water stored inside the boiler 170 is discharged through the hot water nozzle 108. do. In this case, the discharge of hot water takes place separately from the coffee extraction.
  • the coffee extraction device 10 may be provided with an air supply valve 312 for supplying air for cleaning the extraction chamber 120.
  • an air supply valve 312 for supplying air for cleaning the extraction chamber 120.
  • a predetermined amount of water is introduced into the extraction chamber 120, and when the air supply valve 312 is turned on, the air is supplied to the coffee receiving unit 143 through the air supply line 144. Is injected.
  • the air injected into the coffee receptacle 143 may be cleaned by peeling the wet coffee powder, the residue of the coffee cake, etc. adhered to the inside of the extraction chamber 120 while turning into a bubble.
  • the piston unit 140 supplies air to the coffee container 143, and the reverse direction includes a one-way valve 140b that cannot supply air.
  • coffee precipitation, soaking and vacuum soaking are performed at least twice.
  • the coffee extraction method according to the present invention is not limited thereto, and coffee precipitation, soaking and vacuum soaking may be sequentially performed once each.
  • the control unit 400 repeatedly performs 2 to 4 times sequentially.
  • the present invention precipitates the coffee powder in hot water in a pressurized state, forcibly penetrates water into the fine pores of the coffee powder in a vacuum state, and forcibly discharges water from the fine pores of the coffee powder by switching to an atmospheric pressure state. .
  • the soluble flavor component contained in the coffee powder can be extracted from the coffee powder.

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Abstract

The present invention relates to a coffee extracting apparatus and a coffee extracting method using the same. The coffee extracting method comprises the steps of: putting coffee grounds into an extracting chamber; injecting hot water into the extracting chamber; pressurizing the inside of the extracting chamber to soak the coffee grounds in a settled state; converting the inside of the extracting chamber to an atmospheric pressure state; converting the inside of the extracting chamber to a vacuum state to enlarge the coffee grounds and permeate the hot water into the pores of the coffee grounds; and converting the inside of the extracting chamber back to the atmospheric pressure state so that the water permeating the pores of the coffee grounds is discharged from the coffee grounds together with soluble flavor components contained in the coffee grounds.

Description

커피 추출 장치 및 이를 이용한 커피 추출 방법Coffee extraction device and coffee extraction method using the same
본 발명은 커피 분말로부터 액을 추출하는 커피 추출 장치 및 이를 이용한 커피 추출 방법에 관한 것으로, 커피 분말을 불린 후 추출 챔버의 내부를 진공, 대기압, 가압상태로 교대로 전환하여 커피 분말로부터 추출된 용해성 풍미 성분을 가지는 커피 추출 장치 및 이를 이용한 커피 추출 방법에 관한 것이다.The present invention relates to a coffee extracting apparatus for extracting liquid from coffee powder and a coffee extracting method using the same, the solubility extracted from the coffee powder by switching the interior of the extraction chamber to vacuum, atmospheric pressure, and pressurized state after the coffee powder is called It relates to a coffee extraction device having a flavor component and a coffee extraction method using the same.
일반적으로 커피 원두를 분쇄하여 얻은 커피 분말로부터 커피를 추출하는 방법은 하기와 같이 다양하다.In general, a method of extracting coffee from the coffee powder obtained by grinding coffee beans is various as follows.
즉, 에스프레소 머신을 이용하는 방법과, 깔때기에 종이 필터를 얹고 커피 분말을 담은 후 온수를 주전자로 부어 커피를 추출하는 중력식을 이용하는 방법과, 용기에 필터를 깔고 피스톤으로 가압하여 커피를 추출하는 에어로프레스 방법(미국 특허 US 2006/0260471 A1)과, 커피 포트를 2개의 층으로 만들어 하층에 물을 주입하고 상층에 커피 분말과 깔때기를 설치한 후 열을 가하여 하층의 물이 상층의 깔때기를 통과하면서 커피가 추출되는 모카포트 방법 등이 있다.In other words, the method of using an espresso machine, the method of using a gravity filter to put a paper filter in a funnel, pour coffee powder, and pour hot water into a kettle to extract coffee, and the aeropress of extracting coffee by applying a filter to a container and pressurizing it with a piston. Method (US Patent US 2006/0260471 A1), the coffee pot is made into two layers, water is injected into the lower layer, coffee powder and funnel is installed on the upper layer, and heat is applied to the coffee while the lower layer water passes through the upper funnel. Moka pot method is extracted.
이러한 수동 방식으로 커피를 추출하는 방법들 외에 자동화된 커피 추출 방법들도 다수 공개되었다(국내 특허 10-2008-0068664, 국내 특허 10-2014-0097406, 미국 특허 US 2011/0086148 A1).In addition to methods for brewing coffee in this manual manner, a number of automated coffee brewing methods have also been published (Domestic Patent 10-2008-0068664, Domestic Patent 10-2014-0097406, US Patent US 2011/0086148 A1).
또한, 차 잎을 달여서 차를 얻는 경우, 물이 담긴 용기에 말린 차 잎을 넣고 끓여서 차 잎으로부터 차를 우려내는 방식이 일반적으로 행해지고 있다.In addition, when tea is obtained by attaching tea leaves, a method of boiling tea from tea leaves by putting dried tea leaves in a container containing water and boiling is generally performed.
본 발명은 커피 분말에 함유된 풍미 성분(flavor elements)을 효과적으로 추출할 수 있도록, 가압 상태에서 커피 분말 또는 말린 차 잎을 불리고 다시 진공 상태에서 불린 후 대기압 상태로 전환하여 커피 분말 또는 차 잎에 포함된 풍미 성분을 커피 분말 또는 차 잎으로부터 효과적으로 배출시킬 수 있는 커피 추출 장치 및 이를 이용한 커피 추출 방법을 제공하는 데 그 목적이 있다.In order to effectively extract the flavor elements contained in the coffee powder, the present invention is called coffee powder or dried tea leaves in a pressurized state, and then called in a vacuum state and then converted to atmospheric pressure to be included in the coffee powder or tea leaves. It is an object of the present invention to provide a coffee extraction device and a coffee extraction method using the same, which can effectively discharge the flavor component from the coffee powder or tea leaves.
상기 목적을 달성하기 위해, 본 발명은 커피 분말을 추출 챔버에 투입하는 단계; 상기 추출 챔버의 내측에 온수를 투입하는 단계; 상기 커피 분말을 침전 상태에서 불리기(soak) 위해 상기 추출 챔버의 내측을 가압하는 가압단계; 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계; 상기 커피 분말의 크기를 늘려 상기 커피 분말의 기공으로 온수를 침투시키기 위해 상기 추출 챔버의 내측을 진공 상태로 전환하는 진공단계; 및 상기 커피 분말의 기공에 침투한 물이 커피 분말에 포함된 용해성 풍미 성분과 함께 커피 분말로부터 배출되도록 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 포함하는 것을 특징으로 하는 커피 추출 방법을 제공한다.In order to achieve the above object, the present invention comprises the steps of injecting the coffee powder into the extraction chamber; Injecting hot water into the extraction chamber; Pressurizing the inside of the extraction chamber to soak the coffee powder in a precipitated state; Switching the inside of the extraction chamber to an atmospheric pressure state; A vacuum step of converting the inside of the extraction chamber into a vacuum state in order to increase the size of the coffee powder to infiltrate hot water into the pores of the coffee powder; And converting the inside of the extraction chamber into an atmospheric pressure state such that water penetrating the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder. to provide.
상기 가압단계는 적어도 2회 반복될 수 있다.The pressing step may be repeated at least twice.
상기 진공단계는 적어도 2회 이상 반복될 수 있다.The vacuum step may be repeated at least two times.
상기 각 진공단계 사이에, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측을 가압하는 추가 가압단계;를 더 포함할 수 있다.Between each vacuum step, an additional pressurizing step of pressing the inside of the extraction chamber to call the coffee powder in the precipitated state; may further include.
상기 추가 가압단계의 전과 후에 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 더 포함할 수 있다.And converting the inside of the extraction chamber into an atmospheric pressure state before and after the additional pressurization step.
상기 가압단계는, 1차 온수 투입 후 상기 추출 챔버의 내측을 가압하는 1차 가압단계; 상기 1차 가압단계 후 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계; 및 1차 온수보다 더 많은 양의 2차 온수를 투입 후 상기 추출 챔버의 내측을 가압하는 2차 가압단계;를 포함할 수 있다.The pressing step may include: a first pressing step of pressing the inside of the extraction chamber after the first hot water input; Converting the inside of the extraction chamber to an atmospheric pressure state after the first pressurization step; And a second pressurizing step of pressurizing an inner side of the extraction chamber after inputting a larger amount of secondary warm water than primary warm water.
상기 추출 챔버 내의 피스톤을 상승시켜 상기 추출 챔버 내의 공기층을 가압함으로써 상기 추출 챔버를 압축하여 상기 추출 챔버 내측에 커피 분말로부터 추출된 커피를 배출할 수 있다,By raising the piston in the extraction chamber to pressurize the air layer in the extraction chamber to compress the extraction chamber to discharge the coffee extracted from the coffee powder inside the extraction chamber,
또한, 상기 추출 챔버 내측에 공기압을 가하여 상기 추출 챔버 내의 공기층을 가압함으로써 상기 추출 챔버를 압축하여 상기 추출 챔버 내측에 커피 분말로부터 추출된 커피를 배출하는 것도 물론 가능하다.In addition, it is also possible to compress the extraction chamber by applying an air pressure inside the extraction chamber to pressurize the air layer in the extraction chamber to discharge the coffee extracted from the coffee powder inside the extraction chamber.
또한, 본 발명은 커피 분말을 추출 챔버에 투입하는 단계; 상기 추출 챔버의 내측에 1차 온수를 투입하고, 상기 커피 분말을 침전 상태에서 불리기(soak) 위해 상기 추출 챔버의 내측을 가압하는 1차 가압단계; 상기 추출 챔버의 내측에 상기 1차 온수의 양보다 더 많은 양의 2차 온수를 투입하고, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 2차 가압단계; 상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말의 기공에 온수를 강제 침투시키기 위해 진공 상태로 전환하는 1차 진공단계; 상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 3차 가압단계; 상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말의 기공에 온수를 강제 침투시키기 위해 진공 상태로 전환하는 2차 진공단계; 상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 4차 가압단계; 및 상기 커피 분말의 기공에 침투한 물이 커피 분말에 포함된 용해성 풍미 성분과 함께 상기 커피 분말로부터 배출시키기 위해 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 포함하는 것을 특징으로 하는 커피 추출 방법을 제공함으로써, 상기 목적을 달성할 수 있다.In addition, the present invention comprises the steps of injecting the coffee powder into the extraction chamber; A first pressurizing step of putting primary hot water into the extraction chamber and pressing the inside of the extraction chamber to soak the coffee powder in a precipitated state; A second pressurizing step of inputting a larger amount of secondary hot water than the amount of the primary hot water into the extraction chamber, and applying pressure to the inside of the extraction chamber so that the coffee powder is called in a precipitated state; A first vacuum step of converting the inside of the extraction chamber to an atmospheric pressure state and then converting the vacuum chamber into a vacuum state in order to forcibly infiltrate hot water into the pores of the coffee powder; A third pressurizing step of applying a pressure to the inside of the extraction chamber to turn the inside of the extraction chamber into an atmospheric pressure state and to soak the coffee powder in the settled state; A second vacuum step of converting the inside of the extraction chamber into an atmospheric pressure state and then converting the vacuum chamber into a vacuum state to force hot water into the pores of the coffee powder; After converting the inside of the extraction chamber to an atmospheric pressure state, applying a pressure to the inside of the extraction chamber to cause the coffee powder to be called in a precipitated state; And converting the inside of the extraction chamber into an atmospheric pressure state so that the water penetrated into the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder. By providing a method, the above object can be achieved.
또한, 본 발명은 추출 챔버; 상기 추출 챔버의 내측을 따라 이동하며, 커피를 배출하는 배출구를 가지는 피스톤; 상기 피스톤을 왕복 구동하는 구동 실린더; 내측에 상기 추출 챔버의 개구를 개폐하도록 승강하는 씰링 하우징을 구비한 구동 커버; 상기 구동 커버를 좌우로 구동하는 구동부; 상기 추출 챔버 내측을 대기압 상태, 가압 상태 및 진공 상태 중 어느 하나의 상태로 변경하는 압력조절부; 상기 씰링 하우징을 통해 상기 추출 챔버 내측으로 공급하기 위한 온수를 저장하는 보일러; 상기 추출 챔버로부터 커피가 배출되는 커피 배출라인; 및 상기 커피 배출라인을 개폐하는 커피 추출밸브;를 포함하는 것을 특징으로 하는 커피 추출 장치를 제공함으로써, 상기 목적을 달성할 수 있다.The present invention also provides an extraction chamber; A piston moving along the inside of the extraction chamber and having a discharge port for discharging coffee; A drive cylinder for reciprocating the piston; A drive cover having a sealing housing for moving up and down to open and close the opening of the extraction chamber; A driving unit for driving the driving cover left and right; A pressure controller for changing the inside of the extraction chamber to any one of an atmospheric pressure state, a pressurized state, and a vacuum state; A boiler for storing hot water for supplying into the extraction chamber through the sealing housing; A coffee discharge line through which coffee is discharged from the extraction chamber; And a coffee extraction valve configured to open and close the coffee discharge line, thereby achieving the above object.
상기 구동 커버는 외측에 커피 케이크를 밀어서 이동시키는 스크레이퍼를 구비할 수 있다. The drive cover may be provided with a scraper for moving the coffee cake to the outside.
상기 구동 커버는 커피 케이크를 제거하기 위한 커피 케이크 투입구에 대응하는 제1 위치와, 상기 추출 챔버의 개구에 대응하는 제2 위치로 이동할 수 있다.The drive cover may be moved to a first position corresponding to the coffee cake inlet for removing the coffee cake and to a second position corresponding to the opening of the extraction chamber.
상기 씰링 하우징은 상기 구동 커버에 구비된 탄성 부재의 탄성력에 의해 상기 추출 챔버의 개구를 개방하는 제3 위치와, 상기 압력조절부에 의해 상기 구동커버와 상기 씰링 하우징 사이로 공급되는 공기압에 의해 하강하여 상기 추출 챔버의 개구를 폐쇄하는 제4 위치로 이동할 수 있다.The sealing housing is lowered by a third position which opens the opening of the extraction chamber by the elastic force of the elastic member provided in the drive cover, and by the air pressure supplied between the drive cover and the sealing housing by the pressure adjusting unit. A fourth position may be moved to close the opening of the extraction chamber.
상기 압력조절부는 상기 커피분말 및 온수가 투입된 추출 챔버 내부를 설정된 압력을 가하여 설정된 시간동안 가압상태를 유지하는 에어공급밸브; 상기 추출 챔버의 내부를 설정된 크기의 진공 상태로 전환하여 설정된 시간동안 진공상태를 유지지키는 진공밸브; 상기 추출 챔버 내부를 상기 각 가압상태 또는 진공상태에서 대기압 상태로 전환하여 설정된 시간동안 대기압 상태로 유지시키는 대기압밸브; 및 상기 각 밸브를 설정된 순서 및 시간에 따라 자동 제어하는 제어부;로 구성될 수 있다.The pressure control unit is an air supply valve for maintaining a pressurized state for a set time by applying a set pressure to the interior of the extraction chamber into which the coffee powder and hot water are added; A vacuum valve which maintains a vacuum state for a set time by converting the inside of the extraction chamber into a vacuum state of a set size; Atmospheric pressure valve to maintain the inside of the extraction chamber in the atmospheric pressure state for a predetermined time by switching from the pressurized state or vacuum state to the atmospheric pressure state; And a controller for automatically controlling each valve according to a set order and time.
상기 목적을 달성하기 위해, 본 발명에 따른 추출 장치를 이용한 추출과정은 다수의 압력조절용 밸브를 설정된 순서 및 시간에 따라 자동 제어하는 제어부에 의해 구동하는 에어 컴프레서로부터의 압축공기를 이용하여 커피 추출챔버 내부를 진공, 대기압 또는 가압상태 중 하나를 선택 전환시키는 과정을 통해 추출챔버 내의 커피 분말에 포함된 용해성 풍미 성분을 추출하는 커피추출장치를 이용한 커피추출방법에 있어서, 상기 커피분말 및 물이 투입된 추출챔버의 입구를 구동커버를 이동시켜 밀폐시키는 제1과정; 상기 컴프레서에 의해 공급된 공기의 흐름을 제어하는 커피침전 에어공급밸브를 온시켜 상기 구동커버에 구비된 제1에어노즐을 통해 상기 추출챔버 내부로 공급하여 압력을 상승시키는 제2과정; 상기 제2과정을 통해 설정된 일정 압력으로 상승됨에 따라 상기 커피침전 에어공급밸브를 오프시켜 설정된 시간을 유지하는 제3과정; 상기 제어부의 제어에 의하여 대기압밸브를 온시켜 상기 추출챔버 내부의 공기를 상기 제1에어노즐을 통해 배출시켜 대기압 상태로 전환됨에 따라 상기 대기압밸브를 오프시켜 설정된 시간동안 대기압 상태를 유지하는 제4과정; 상기 제어부의 제어에 의하여 진공밸브를 온시켜 상기 추출챔버 내부의 공기를 상기 제1에어노즐을 통해 배출시켜 진공압력을 상승시키는 제5과정; 상기 제5과정에서 진공압력이 설정된 진공압력까지 상승하면 상기 진공밸브를 오프시켜 설정된 시간동안 유지하는 제6과정; 상기 제어부의 제어에 의하여 상기 대기압밸브를 온 시켜 상기 추출챔버 내부의 공기를 제1에어노즐을 통해 공급하여 대기압 상태로 전환되면, 상기 대기압밸브를 오프시킨 후 설정된 시간을 유지하는 제7과정; 및 상기 제어부의 제어에 의하여 커피추출 밸브를 온시켜 추출챔버의 커피분말이 용해된 커피을 추출하는 제8과정;을 포함하며, 상기 제2 내지 제7과정은 상기 제어부의 제어에 의해 설정된 횟수에 따라 선택 및 반복 수행하는 것을 특징으로 한다.In order to achieve the above object, the extraction process using the extraction device according to the present invention is a coffee extraction chamber using compressed air from an air compressor driven by a control unit for automatically controlling a plurality of pressure regulating valves according to a set order and time In the coffee extraction method using a coffee extraction device for extracting the soluble flavor component contained in the coffee powder in the extraction chamber through the process of switching the interior of the vacuum, atmospheric pressure or pressurized state, wherein the coffee powder and water is extracted A first step of closing the inlet of the chamber by moving the driving cover; A second process of turning on the coffee settling air supply valve controlling the flow of air supplied by the compressor and supplying the pressure to the inside of the extraction chamber through the first air nozzle provided in the driving cover to increase the pressure; A third step of maintaining the set time by turning off the coffee settling air supply valve as it rises to a predetermined pressure set through the second step; A fourth process of turning on the atmospheric pressure valve under the control of the controller to discharge the air inside the extraction chamber through the first air nozzle to switch to the atmospheric pressure state, thereby turning off the atmospheric pressure valve to maintain the atmospheric pressure state for a set time; ; A fifth step of turning on the vacuum valve under the control of the controller to discharge the air inside the extraction chamber through the first air nozzle to increase the vacuum pressure; A sixth process of turning off the vacuum valve and maintaining it for a predetermined time when the vacuum pressure rises to a predetermined vacuum pressure in the fifth process; A seventh process of turning on the atmospheric pressure valve under the control of the controller and supplying air in the extraction chamber through the first air nozzle to switch to the atmospheric pressure state, maintaining the set time after turning off the atmospheric pressure valve; And an eighth process of turning on the coffee extraction valve under the control of the controller to extract coffee in which the coffee powder of the extraction chamber is dissolved, wherein the second to seventh processes are performed according to the number of times set by the control of the controller. It is characterized by performing the selection and iteration.
여기서, 상기 제1과정은 상기 구동커버를 상기 추출챔버의 상단 입구에 위치시키는 11단계; 상기 제어부의 제어에 의하여 씰링 하우징 구동밸브를 온 시킴에 따라 제2 에어노즐을 통해 상기 구동커버의 내측에 구비된 씰링 하우징의 상면 사이로 공기압을 공급하는 12단계; 및 상기 제2 에어노즐을 통해 공급된 공기압에 의해 상기 씰링 하우징이 하강하여 상기 추출챔버를 밀폐시키는 13단계;를 포함하여 이루어진 것을 특징으로 한다.Here, the first step is the eleventh step of placing the drive cover at the upper inlet of the extraction chamber; Step 12 of supplying the air pressure between the upper surface of the sealing housing provided on the inside of the drive cover through the second air nozzle as the sealing housing drive valve is turned on under the control of the controller; And a step 13 of sealing the extraction chamber by lowering the sealing housing by the air pressure supplied through the second air nozzle.
상기 제5과정은 상기 각 진공밸브를 온 시킴에 따라 상기 컴프레서에서 공급된 공기압에 의하여 상기 진공밸브 사이로 상기 추출챔버 내의 공기를 외부로 배출하는 것을 특징으로 한다.In the fifth process, the air in the extraction chamber is discharged to the outside between the vacuum valves by the air pressure supplied from the compressor as the respective vacuum valves are turned on.
상기 제8과정은 커피추출밸브를 온시켜 커피 수용부를 개방하는 21단계; 상기 커피침전 에어공급밸브를 온시켜 상기 추출챔버 내측에 공기를 공급하여 커피를 하방향으로 일정 시간동안 가압하는 22단계; 및 상기 22단계에 의해 커피노즐을 통해 커피를 외부로 배출 후 상기 커피침전 에어공급밸브 및 커피추출밸브를 오프시키는 23단계;를 포함하여 이루어진 것을 특징으로 한다.The eighth step is a step 21 of opening the coffee receiving unit by turning on the coffee extraction valve; Turning on the coffee settling air supply valve to supply air to the extraction chamber to pressurize the coffee downward for a predetermined time; And turning off the coffee settling air supply valve and the coffee extraction valve after discharging the coffee to the outside through the coffee nozzle in step 22.
또한, 상기 제8과정은 커피추출밸브를 온시켜 커피 수용부를 개방하는 31단계; 상기 추출챔버 하단에 구비된 피스톤 유닛을 설정된 속도로 상승시켜 추출챔버의 내부를 설정된 압력으로 유지시키는 32단계; 상기 피스톤 유닛이 상승함에 따라 커피가 외부로 배출이 완료되면 커피추출밸브를 오프시키고, 대기압 밸브를 온시키는 33단계; 및 상기 피스톤 유닛을 원위치로 하강시키는 34단계;를 포함하여 이루어진 것을 특징으로 한다.In addition, the eighth process is a 31 step of opening the coffee container by turning on the coffee extraction valve; Step 32 of raising the piston unit provided at the lower end of the extraction chamber at a set speed to maintain the inside of the extraction chamber at a set pressure; Step 33 of turning off the coffee extraction valve and turning on the atmospheric pressure valve when the piston unit is lifted and the coffee is discharged to the outside; And 34 steps of lowering the piston unit to its original position.
또한 상기 제8과정에 부가하여, 상기 추출챔버가 대기압상태에서 제어부의 제어에 의하여 씰링 하우징 구동밸브을 오프시키는 51단계; 상기 구동커버과 씰링 하우징 사이의 공기가 배출되어 상기 씰링 하우징이 상승하는 52단계; 상기 피스톤 구동밸브를 온시켜 피스톤 유닛을 상기 추출챔버의 상부 끝단 제1위치까지 상승시켜, 커피케이크를 상기 추출챔버 외측으로 이동시키는 53단계; 및 상기 구동커버를 측방향으로 이동시켜 구동커버 하단에 결합된 스크레이퍼에 의해 상기 커피 케이크를 수거용기까지 이동시키는 54단계;를 포함하여 이루어진 것을 특징으로 한다.In addition to the eighth step, the extracting chamber is the 51 step of turning off the sealing housing drive valve under the control of the controller in the atmospheric pressure state; Step 52, in which air between the driving cover and the sealing housing is discharged to raise the sealing housing; A step 53 of turning on the piston drive valve to raise the piston unit to the first position of the upper end of the extraction chamber to move the coffee cake to the outside of the extraction chamber; And moving the drive cover laterally to move the coffee cake to the collection vessel by a scraper coupled to the bottom of the drive cover.
상기한 바와 같이 본 발명에 있어서는 커피 분말 또는 차 잎에 포함된 용해성 풍미 성분을 효과적으로 추출함으로써 깊은 풍미를 갖는 커피 또는 차를 얻을 수 있는 이점이 있다.As described above, in the present invention, the coffee or tea having a deep flavor can be obtained by effectively extracting the soluble flavor component contained in the coffee powder or the tea leaf.
도 1은 본 발명의 일 실시예에 따른 커피 추출 장치를 나타내는 블록도이고,1 is a block diagram showing a coffee extraction device according to an embodiment of the present invention,
도 2는 본 발명의 일 실시예에 따른커피 추출 장치를 나타내는 사시도이고,2 is a perspective view showing a coffee extraction device according to an embodiment of the present invention,
도 3은 본 발명의 일 실시예에 따른 커피 추출 장치의 공압 회로도이고,3 is a pneumatic circuit diagram of a coffee extraction device according to an embodiment of the present invention,
도 4 내지 도 8는 본 발명의 일 실시예에 따른 커피 추출 과정을 순차적으로 나타내는 흐름도이다.4 to 8 are flowcharts sequentially illustrating a coffee extraction process according to an embodiment of the present invention.
도 9는 도 8를 대체하는 실시예에 따른 커피 추출 과정을 순차적으로 나타내는 흐름도이다.FIG. 9 is a flowchart sequentially illustrating a coffee extraction process according to an exemplary embodiment replacing FIG. 8.
도 10 내지 도 17는 본 발명의 일 실시예에 따른 커피 추출 과정의 각 과정을 각각 순차적으로 나타내는 개략도이다.10 to 17 are schematic views sequentially illustrating respective processes of the coffee extraction process according to an embodiment of the present invention.
본 발명은 커피 또는 차 추출 장치에 관한 것이다. 이하에서는 커피 분말로부터 커피를 추출하는 장치 및 방법에 대해서 설명하며, 상기 커피를 추출하기 위한 장치를 통해서 말린 차 잎으로부터 차를 추출하는 방법은 동일하다. 따라서, 이하에서는 커피 분말로부터 커피를 추출하는 추출 장치 및 이를 이용한 추출 방법에 대해서만 설명한다.The present invention relates to a coffee or tea extraction device. Hereinafter, an apparatus and method for extracting coffee from coffee powder will be described. The method of extracting tea from dried tea leaves through the apparatus for extracting coffee is the same. Therefore, hereinafter, only the extraction apparatus for extracting coffee from the coffee powder and the extraction method using the same will be described.
이하, 도면을 참조하여 본 발명의 일 실시예에 따른 커피 추출 장치를 설명한 후, 이 커피 추출 장치를 통해서 커피 분말로부터 깊은 풍미가 있는 커피를 추출하는 방법을 설명한다. 본 발명에서 언급하는 ‘커피’는 온수와 혼합된 커피 분말로부터 추출된 풍미 성분을 포함하는 액상의 커피를 의미한다.Hereinafter, a coffee extracting apparatus according to an embodiment of the present invention will be described with reference to the drawings, and then a method of extracting coffee with a deep flavor from coffee powder through the coffee extracting apparatus will be described. 'Coffee' referred to in the present invention means a liquid coffee containing a flavor component extracted from coffee powder mixed with hot water.
도 1은 본 발명의 일 실시예에 따른 커피 추출 장치를 나타내는 사시도이고, 도 2는 본 발명의 일 실시예에 따른커피 추출 장치를 나타내는 블록도이고, 도 3은 본 발명의 일 실시예에 따른 커피 추출 장치의 공기압 회로도이다.1 is a perspective view showing a coffee extraction device according to an embodiment of the present invention, Figure 2 is a block diagram showing a coffee extraction device according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention Pneumatic circuit diagram of a coffee extraction device.
도 1을 참조하면, 본 발명의 일 실시예에 따른 커피 추출 장치(10)는 온수와 커피 분말이 혼합된 혼합물로부터 커피를 추출하는 커피 추출 유닛(100)과, 커피 추출 유닛(100)의 내부에 공기를 가압하거나 진공 상태 및 대기압 상태로 전환하는 등 공기압을 조절하는 컴프레서(200)와, 커피 추출 장치(10)의 공기압 회로 상의 각 요소에 배치된 다수의 밸브를 포함하는 압력조절부(300)를 포함한다.Referring to FIG. 1, the coffee extracting apparatus 10 according to an embodiment of the present invention includes a coffee extracting unit 100 for extracting coffee from a mixture of hot water and coffee powder mixed therein, and an interior of the coffee extracting unit 100. Compressor 200 for adjusting the air pressure, such as to pressurize the air or to switch to a vacuum state and atmospheric pressure state, and a pressure control unit 300 including a plurality of valves disposed on each element on the pneumatic circuit of the coffee extraction device 10 ).
또한, 커피 추출 장치(10)는 커피 추출 유닛(100), 컴프레서(200) 및 압력조절부(300)를 제어하기 위해 커피 추출 유닛(100), 컴프레서(200) 및 다수의 압력조절부(300)와 각각 전기적으로 연결된 제어부(400)를 포함한다. 제어부(400)는 MCU(micro controller unit)일 수 있다.In addition, the coffee extraction device 10 is a coffee extraction unit 100, the compressor 200 and the pressure control unit 300 to control the coffee extraction unit 100, the compressor 200 and the pressure control unit 300 And a controller 400 electrically connected to each other. The controller 400 may be a micro controller unit (MCU).
이하, 도 2 및 도 3을 참조하여 커피 추출 유닛(100)의 구성을 설명한 후, 커피 추출 장치(10)의 전체적인 공기압 회로를 설명한다.Hereinafter, the configuration of the coffee extraction unit 100 will be described with reference to FIGS. 2 and 3, and then the overall pneumatic circuit of the coffee extraction device 10 will be described.
도 2를 참조하면, 커피 추출 유닛(100)은 외부를 형성하는 캐비닛(101)을 구비한다. 캐비닛(101) 내측에는 컴프레서(200), 압력조절부(300) 및 제어부(400)가 배치될 수 있다.Referring to FIG. 2, the coffee extraction unit 100 includes a cabinet 101 that forms an exterior. The compressor 200, the pressure regulator 300, and the controller 400 may be disposed inside the cabinet 101.
캐비닛(101) 외측의 상부에는 상판(103)이 배치되고, 구동 커버(150)가 상판(103)과 이격된 상태로 구동 유닛(160, 도 3 참조)에 의해 좌우로 직선이동 가능하게 배치된다.The upper plate 103 is disposed above the cabinet 101, and the driving cover 150 is disposed to be linearly moved left and right by the driving unit 160 (see FIG. 3) while being spaced apart from the upper plate 103. .
상판(103)에는 커피를 추출하고 남은 커피 케이크(3, 도 16 참조)를 투입하기 위한 커피 케이크 투입구(104)가 형성된다. 커피 케이크 투입구(104) 하측에는 커피 케이크 수거용기(110, 도 10 참조)가 배치될 수 있다. 캐비닛(101)은 커피 케이크 수거용기(110)를 캐비닛(101)의 내측으로부터 인출할 수 있도록 일측면에 도어(102)를 형성할 수 있다. The top plate 103 is formed with a coffee cake inlet 104 for injecting the remaining coffee cake 3 (see FIG. 16) after the coffee is extracted. A coffee cake collecting container 110 (see FIG. 10) may be disposed below the coffee cake inlet 104. The cabinet 101 may form a door 102 on one side so that the coffee cake collecting container 110 can be drawn out from the inside of the cabinet 101.
또한, 상판(103)에는 커피 케이크 투입구(104)에 추출 챔버(120) 내로 커피 분말(1, 도 10 참조)을 투입하기 위한 커피 분말 투입구(105)가 형성된다. 커피 분말 투입구(105)는 추출 챔버(120)로부터 커피 케이크(3)를 배출하는 배출구로도 사용된다. 커피 분말 투입구(105)의 하측에는 대략 실린더 형상의 추출 챔버(120)가 배치된다.In addition, a coffee powder inlet 105 for introducing coffee powder 1 (see FIG. 10) into the extraction chamber 120 is formed in the coffee plate inlet 104. The coffee powder inlet 105 is also used as an outlet for discharging the coffee cake 3 from the extraction chamber 120. An approximately cylindrical extraction chamber 120 is disposed below the coffee powder inlet 105.
캐비닛(101) 외측의 하부에는 컵을 지지하는 컵 지지대(106)가 형성되고, 컵 지지대(106)의 상측으로는 추출된 커피가 배출되는 커피 노즐(107)과 사용자에 의해 온수 버튼(109)이 눌릴 경우 온수가 배출되는 온수 노즐(108)이 배치될 수 있다. A cup support 106 for supporting a cup is formed below the outside of the cabinet 101, and a coffee nozzle 107 through which the extracted coffee is discharged above the cup support 106 and a hot water button 109 by the user. When pressed, a hot water nozzle 108 through which hot water is discharged may be disposed.
도 3을 참조하면, 추출 챔버(120)는 하측에는 공기압 실린더(130)가 배치되며, 추출 챔버(120) 의 내측에는 공기압 실린더(130)의 피스톤 유닛(140)이 승강 가능하게 배치된다.Referring to FIG. 3, the pneumatic cylinder 130 is disposed at the lower side of the extraction chamber 120, and the piston unit 140 of the pneumatic cylinder 130 may be lifted and disposed inside the extraction chamber 120.
또한, 추출 챔버(120)는 외측에 밴드형 히터(121)가 배치될 수 있다. 히터(121)는 커피 추출 중에 추출 챔버(120)에 담긴 커피 분말과 온수의 혼합물(이하, ‘혼합물’이라 함)의 온도가 낮아져 추출 효율이 저하되는 것을 방지하도록 추출 챔버(120)를 가열할 수 있다.In addition, the extraction chamber 120 may be disposed outside the band heater 121. The heater 121 heats the extraction chamber 120 to prevent the temperature of the mixture of coffee powder and hot water contained in the extraction chamber 120 (hereinafter, referred to as 'mixture') during the extraction of coffee is lowered to prevent the extraction efficiency from decreasing. Can be.
공기압 실린더(130)는 피스톤 유닛(140)의 상사점과 하사점을 각각 검출하기 위한 상측 리미트 스위치(131)와 하측 리미트 스위치(132)를 구비한다. 상측 및 하측 리미트 스위치(131,132)는 검출 신호를 제어부(400)로 전송한다. 제어부(400)는 각 검출 신호를 수신하면 피스톤 유닛(140)의 상승 방향 또는 하강 방향으로의 구동을 멈추도록 밸브를 제어한다.The pneumatic cylinder 130 includes an upper limit switch 131 and a lower limit switch 132 for detecting the top dead center and the bottom dead center of the piston unit 140, respectively. The upper and lower limit switches 131 and 132 transmit detection signals to the controller 400. The controller 400 controls the valve to stop driving in the upward direction or the downward direction of the piston unit 140 when each detection signal is received.
피스톤 유닛(140)은 상부에 혼합물을 여과하기 위한 필터(141)가 배치된다. 필터(141)는 다수의 작은 구멍이 형성된 금속 필터와 이 금속 필터 상면에 안착되는 종이 필터를 포함할 수 있다. 금속 필터는 반영구적으로 사용하는 반면, 종이 필터는 일회용으로 사용된다. The piston unit 140 has a filter 141 is disposed at the top for filtering the mixture. The filter 141 may include a metal filter having a plurality of small holes and a paper filter seated on the upper surface of the metal filter. Metal filters are used semi-permanently, while paper filters are used for single use.
또한, 피스톤 유닛(140)은 필터(141) 하측으로 혼합물을 여과한 액체 즉, 커피가 수용되는 커피 수용부(143)가 형성된다. 커피 수용부(143)는 대략 콘(cone) 형상으로 이루어질 수 있으며, 피스톤 유닛(140) 외측으로 커피를 배출하기 위한 커피 배출라인(145)이 연결된다. 피스톤 유닛(140)은 커피 수용부(143)로부터 커피 배출라인(145)으로 커피를 배출하며 그 역방향으로 커피가 이송되는 것을 방지하는 원 웨이(one way) 밸브(140a)가 설치된다.In addition, the piston unit 140 is formed below the filter 141, the liquid receiving the filtered mixture, that is, the coffee receiving unit 143 is accommodated. The coffee receiving portion 143 may be formed in a substantially cone shape, and the coffee discharge line 145 for discharging the coffee to the outside of the piston unit 140 is connected. The piston unit 140 is provided with a one-way valve 140a for discharging the coffee from the coffee container 143 to the coffee discharge line 145 and preventing the coffee from being transferred in the reverse direction.
구동 커버(150)는 구동 유닛(160)에 의해 커피 케이크 투입구(104)와 커피 분말 투입구(105) 중 어느 하나에 대응하는 위치로 선택적으로 이동할 수 있다. 즉, 커피 분말(1)을 추출 챔버(120)에 투입 시 구동 커버(150)는 커피 케이크 투입구(104)에 대응하는 위치로 이동하고, 커피 추출 시에는 커피 분말 투입구(105)에 대응하는 위치로 이동한다. The driving cover 150 may be selectively moved to a position corresponding to any one of the coffee cake inlet 104 and the coffee powder inlet 105 by the driving unit 160. That is, when the coffee powder 1 is introduced into the extraction chamber 120, the driving cover 150 moves to a position corresponding to the coffee cake inlet 104, and at the time of coffee extraction, the position corresponding to the coffee powder inlet 105. Go to.
또한, 구동 커버(150)는 외측에 커피 케이크(3)를 밀어서 커피 케이크 투입구(104)로 이동시키기 위한 스크레이퍼(152)가 장착될 수 있다.In addition, the driving cover 150 may be equipped with a scraper 152 for moving the coffee cake 3 to the coffee cake inlet 104 to the outside.
또한, 구동 커버(150)는 내측에 씰링 하우징(151)이 상하로 이동 가능하게 배치된다. 씰링 하우징(151)은 추출 챔버(120)의 상측 개구(120a)를 개폐하며, 추출 챔버(120)와 함께 커피를 추출하기 위한 폐쇄된 공간을 형성한다. 이 공간은 커피 추출을 위한 스텝 중에 기압 상태가 전환된다. 예를 들면, 대기압 상태에서 가압 상태, 가압 상태에서 대기압 상태, 대기압 상태에서 진공 상태, 진공 상태에서 대기압 상태로 전환된다.In addition, the driving cover 150 is disposed in the sealing housing 151 to move up and down. The sealing housing 151 opens and closes the upper opening 120a of the brewing chamber 120, and forms a closed space for brewing coffee together with the brewing chamber 120. This space is switched at atmospheric pressure during the step for brewing coffee. For example, it is switched from the atmospheric pressure state to the pressurized state, the pressurized state to the atmospheric pressure state, the atmospheric pressure state to the vacuum state, and the vacuum state to the atmospheric pressure state.
씰링 하우징(151)은 구동 커버(150)의 측면과 씰링 하우징(151)의 측면 사이에 배치된 스프링(153)에 의해 상승하는 방향으로 탄성력을 받는다. 씰링 하우징(151)은 후술하는 제2 에어 노즐(157)을 통해 구동 커버(150)의 내측과 씰링 하우징(151)의 상면 사이로 공급되는 공기에 의해 하강하여 추출 챔버(120)의 상측 개구(120a)를 폐쇄한다. 이 경우, 구동 커버(150)의 내측과 씰링 하우징(151)의 상면 사이에 형성된 공간의 공기압이 스프링(153)의 탄성력보다 크다. 반대로 구동 커버(150)의 내측과 씰링 하우징(151)의 상면 사이의 공기를 배출하면, 씰링 하우징(151)은 스프링(153)의 탄성력에 의해 다시 상승하게 된다.The sealing housing 151 receives an elastic force in a rising direction by a spring 153 disposed between the side of the driving cover 150 and the side of the sealing housing 151. The sealing housing 151 is lowered by the air supplied between the inside of the drive cover 150 and the upper surface of the sealing housing 151 through the second air nozzle 157, which will be described later, to open the upper opening 120a of the extraction chamber 120. ) Close. In this case, the air pressure in the space formed between the inside of the drive cover 150 and the upper surface of the sealing housing 151 is greater than the elastic force of the spring 153. On the contrary, when the air is discharged between the inside of the driving cover 150 and the upper surface of the sealing housing 151, the sealing housing 151 is raised again by the elastic force of the spring 153.
또한, 씰링 하우징(151)은 상부를 관통하는 온수 공급 노즐(155)과 제1 에어 노즐(156)이 결합된다.In addition, the sealing housing 151 is coupled to the first air nozzle 156 and the hot water supply nozzle 155 penetrating the upper portion.
온수 공급 노즐(155)은 씰링 하우징(151)이 추출 챔버(120)의 상측 개구(120a)를 폐쇄한 상태에서 추출 챔버(120) 내로 온수를 공급한다. 제1 에어 노즐(156)은 추출 챔버(120) 내측으로 에어를 공급하여 추출 챔버(120) 내측의 압력을 상승시킨다. 온수 공급 노즐(155)에 의해 추출 챔버(120) 내측으로 고온의 온수가 공급될 경우, 커피 분말은 고온의 온수가 혼합된다. The hot water supply nozzle 155 supplies hot water into the extraction chamber 120 with the sealing housing 151 closing the upper opening 120a of the extraction chamber 120. The first air nozzle 156 supplies air into the extraction chamber 120 to increase the pressure inside the extraction chamber 120. When hot water is supplied into the extraction chamber 120 by the hot water supply nozzle 155, the coffee powder is mixed with hot water.
또한, 제1 에어 노즐(156)은 추출 챔버(120) 내측으로 공기압을 공급할 수 있다. 이 경우 추출 챔버(120) 내측의 압력은 상승하게 되면, 커피 분말(1)이 축소되면서(도 15 참조) 침전하게 된다(도 13 참조). 이와 같이 고온의 온수 내에 커피 분말을 침전시키면 효과적으로 불릴 수 있다.In addition, the first air nozzle 156 may supply air pressure into the extraction chamber 120. In this case, when the pressure inside the extraction chamber 120 rises, the coffee powder 1 shrinks (see FIG. 15) and precipitates (see FIG. 13). As such, the precipitation of the coffee powder in the hot water may be effectively called.
또한, 추출 챔버(120)는 제1 에어 노즐(156)을 통해 추출 챔버(120) 내측의 공기가 모두 외부로 배출됨에 따라 진공 상태가 될 수 있고, 반대로 제1 에어 노즐(156)을 통해 외부와 연통됨에 따라 추출 챔버(120) 내측이 대기압 상태에 놓일 수 있다. 이와 같이 추출 챔버(120)의 내측은 선택적으로 가압 상태, 진공 상태 및 대기압 상태 중 어느 하나의 상태로 될 수 있다.In addition, the extraction chamber 120 may be in a vacuum state as all the air inside the extraction chamber 120 is discharged to the outside through the first air nozzle 156, and, conversely, the extraction chamber 120 is external to the first air nozzle 156. In communication with the inside of the extraction chamber 120 may be placed at atmospheric pressure. As such, the inside of the extraction chamber 120 may be selectively in one of a pressurized state, a vacuum state, and an atmospheric pressure state.
제2 에어 노즐(157)은 구동 커버(150)에 결합되며, 구동 커버(150)의 내측과 씰링 하우징(151)의 상면 사이로 공기를 공급하거나, 반대로 그 사이에 공급된 공기를 배출한다. 제2 에어 노즐(157)을 통해 구동 커버(150)의 내측과 씰링 하우징(151)의 상면 사이로 공기가 공급되면 씰링 하우징(151)은 하강하고, 공기를 배출하면 씰링 하우징(151)은 스프링(153)의 탄성력에 의해 다시 상승한다.The second air nozzle 157 is coupled to the driving cover 150, and supplies air between the inside of the driving cover 150 and the upper surface of the sealing housing 151 or vice versa. When air is supplied between the inside of the driving cover 150 and the upper surface of the sealing housing 151 through the second air nozzle 157, the sealing housing 151 is lowered, and when the air is discharged, the sealing housing 151 is a spring ( It rises again by the elastic force of 153).
구동 유닛(160)은 모터(161)와, 모터(161)로부터 전달된 회전력을 구동 커버(150)로 전달하는 구동 벨트(163)와, 이동 블록(164)과, 구동 커버(150)의 좌측 및 우측 상한점을 검출하기 위한 좌측 리미트 스위치(165) 및 우측 리미트 스위치(166)를 포함할 수 있다.The drive unit 160 includes a motor 161, a drive belt 163 for transmitting the rotational force transmitted from the motor 161 to the drive cover 150, a moving block 164, and a left side of the drive cover 150. And a left limit switch 165 and a right limit switch 166 for detecting a right upper limit point.
모터(161)는 정/역회전 가능하며 회전 속도를 제어할 수 있는 스테핑 모터를 사용할 수 있다. 이동 블록(164)은 구동 벨트(163)의 구동에 의해 LM 가이드(162)를 따라 슬라이딩 이동하며, 연결 브라켓(168)을 통해 구동 커버(150)와 연결된다. 이에 따라, 구동 커버(150)는 이동 블록(164)과 함께 좌우로 직선 이동할 수 있다.The motor 161 may use a stepping motor capable of forward / backward rotation and controlling the rotation speed. The moving block 164 slides along the LM guide 162 by the driving of the driving belt 163 and is connected to the driving cover 150 through the connecting bracket 168. Accordingly, the driving cover 150 may linearly move left and right with the moving block 164.
또한, 커피 추출 유닛(100)은 내측에 보일러(170)를 구비할 수 있다. 보일러(170)는 온도 센서(171), 수위 센서(172) 및 히터(173)를 포함할 수 있다. 보일러(170)는 씰링 하우징(151)에 구비된 온수 분사 노즐(155)와 연결되어 있어, 추출 챔버(120) 내측으로 소정 온도의 온수를 공급할 수 있다. In addition, the coffee extraction unit 100 may be provided with a boiler 170 inside. The boiler 170 may include a temperature sensor 171, a water level sensor 172, and a heater 173. The boiler 170 is connected to the hot water spray nozzle 155 provided in the sealing housing 151 to supply hot water at a predetermined temperature into the extraction chamber 120.
또한, 보일러(170)에 저장되는 물은 수원과 연결된 노즐(수도꼭지)(8)을 통해 공급받을 수 있다. 원수 공급 밸브(311)는 보일러(170) 내로 노즐(8)에서 배출되는 원수의 공급을 제어한다. 이 경우 노즐(8)과 원수 공급 밸브(311)를 연결하는 라인에는 필터(9)가 배치될 수 있다.In addition, the water stored in the boiler 170 may be supplied through a nozzle (faucet) 8 connected to the water source. The raw water supply valve 311 controls the supply of raw water discharged from the nozzle 8 into the boiler 170. In this case, a filter 9 may be disposed in a line connecting the nozzle 8 and the raw water supply valve 311.
또한, 커피 추출 유닛(100)은 캐비닛(101)에 배치된 조작부(181)와 온도 표시부(183)를 구비할 수 있다. 조작부(181)는 사용자의 명령을 입력하고, 현재 상태를 디스플레이할 수 있도록 정전용량식 또는 가압식 터치 스크린으로 형성될 수 있다. 온도 표시부(183)는 보일러(170)에 저장된 온수의 온도를 표시하거나, 추출 챔버(120) 내측의 온도를 표시할 수 있다. 이 경우, 온도 표시부(183)은 보일러(170)의 저장된 물의 온도를 검출하는 온도센서(171)와, 추출 챔버(120) 내측의 온도를 검출하는 온도센서(171)로부터 검출된 온도가 반영된다.In addition, the coffee extraction unit 100 may include an operation unit 181 and a temperature display unit 183 disposed in the cabinet 101. The operation unit 181 may be formed as a capacitive or pressurized touch screen to input a user's command and display the current state. The temperature display unit 183 may display the temperature of the hot water stored in the boiler 170 or may display the temperature inside the extraction chamber 120. In this case, the temperature display unit 183 reflects the temperature detected from the temperature sensor 171 for detecting the temperature of the stored water of the boiler 170 and the temperature sensor 171 for detecting the temperature inside the extraction chamber 120. .
한편, 도 3에서 미설명 부호 210은 에어 필터이고, 220은 에어 탱크이고, 230은 각 밸브와 연결된 에어 디스트리뷰터(air distributor)이다.In FIG. 3, reference numeral 210 is an air filter, 220 is an air tank, and 230 is an air distributor connected to each valve.
압력조절부(300)는 도 3과 같이 다수의 밸브를 구비할 수 있다. 각 밸브의 기능은 하기에서 설명하는 커피를 추출하는 과정에서 설명한다.The pressure regulator 300 may be provided with a plurality of valves as shown in FIG. The function of each valve is explained in the process of brewing coffee described below.
상기와 같이 구성된 본 발명의 일 실시예에 따른 커피 추출 장치를 이용하여 커피 분말로부터 깊은 풍미를 갖는 커피를 추출하는 과정을 나타내는 도 4 내지 도 17를 참조하여 설명한다.4 to 17 illustrating a process of extracting coffee having a deep flavor from coffee powder by using the coffee extracting apparatus according to the embodiment configured as described above.
도 4 내지 도 8는 본 발명의 일 실시예에 따른 커피 추출 과정을 순차적으로 나타내는 흐름도이고, 도 10 내지 도 17는 본 발명의 일 실시예에 따른 커피 추출 과정의 각 과정을 각각 순차적으로 나타내는 개략도이다.4 through 8 are flowcharts sequentially illustrating a coffee extraction process according to an embodiment of the present invention, and FIGS. 10 to 17 are schematic views sequentially illustrating respective processes of the coffee extraction process according to an embodiment of the present invention. to be.
도 4와 도 10를 참조하면, 커피 추출을 위해 조작부(181)를 통해 커피 추출 모드를 선택한다(S1). 구동 커버(150)가 제2 위치 즉 커피 분말 투입구(105)에 대응하는 위치에 있을 경우, 제1 위치 즉 커피 케이크 투입구(104)에 대응하는 위치로 이동한다(S2). 구동 커버(150)는 조작부(181)를 통해 커피 추출 계속 명령이 입력되기 전까지 제1 위치에서 대기한다.4 and 10, the coffee extraction mode is selected through the operation unit 181 for coffee extraction (S1). When the driving cover 150 is in the second position, that is, the position corresponding to the coffee powder inlet 105, the driving cover 150 moves to the first position, that is, the position corresponding to the coffee cake inlet 104 (S2). The driving cover 150 waits at the first position until the coffee brewing continuing command is input through the operation unit 181.
이어서, 커피 분말 투입구(105)를 통해 추출 챔버(120) 내측으로 소정의 커피 분말(1)을 투입한다(S3). Subsequently, the predetermined coffee powder 1 is introduced into the extraction chamber 120 through the coffee powder inlet 105 (S3).
조작부(181)를 통해 커피 추출 계속 명령을 입력하면, 구동 커버(150)는 도 11과 같이 제1 위치에서 제2 위치로 이동한다(S4).When the coffee continuation command is input through the operation unit 181, the driving cover 150 moves from the first position to the second position as shown in FIG. 11 (S4).
이어서, 씰링 하우징 구동 밸브(301)가 온(on)되면, 구동 커버(150)와 씰링 하우징(151) 사이로 공급되는 공기압에 의해 도 12과 같이 씰링 하우징(151)이 구동 커버(150)의 내측을 따라 하강한다(S5). 이에 따라 추출 챔버(120)의 개구(120a)는 씰링 하우징(151)에 의해 폐쇄된다. 씰링 하우징(151)의 하단에 결합된 오링은 상판(103)의 표면과 밀착됨에 따라 추출 챔버(120)의 내측은 기밀이 유지된다.Subsequently, when the sealing housing driving valve 301 is turned on, the sealing housing 151 is turned inside the driving cover 150 as shown in FIG. 12 by the air pressure supplied between the driving cover 150 and the sealing housing 151. It descends along (S5). Accordingly, the opening 120a of the extraction chamber 120 is closed by the sealing housing 151. As the O-ring coupled to the bottom of the sealing housing 151 is in close contact with the surface of the upper plate 103, the inside of the extraction chamber 120 is kept airtight.
온수공급밸브(302,303)가 온되면(S6), 온수 공급 노즐(155)을 통해 t초 동안 소정 량(예를 들면, 20cc)의 1차 온수(5)가 추출 챔버(120) 내측으로 공급된다. t초 후 온수공급밸브(302,303)가 오프(off)되면(S7), 1차 온수의 공급이 중지된다.When the hot water supply valves 302 and 303 are turned on (S6), a predetermined amount (for example, 20 cc) of primary hot water 5 is supplied into the extraction chamber 120 through the hot water supply nozzle 155 for t seconds. . After t seconds, when the hot water supply valves 302 and 303 are turned off (S7), the supply of the primary hot water is stopped.
1차 온수가 추출 챔버(120) 내측으로 공급됨에 따라, 커피 분말(1)은 부력에 의해 부상하게 된다. 커피 분말(1)이 1차 온수 내에서 부상하게 되면 이후에 진행되는 커피 분말의 불림 처리가 효과적으로 수행될 수 없다. 따라서 커피 분말(1)을 하기와 같이 1차 온수(5) 내에 침전시키는 단계가 필요하다.As the primary hot water is supplied into the extraction chamber 120, the coffee powder 1 floats due to buoyancy. When the coffee powder 1 floats in the primary hot water, subsequent soaking of the coffee powder cannot be effectively performed. Therefore, the step of precipitating the coffee powder (1) in the primary hot water (5) as follows.
이를 위해, 커피침전 에어공급밸브(304)가 온되면(S8), 제1 에어 노즐(156)을 통해 추출 챔버(120) 내측으로 공기가 공급된다. 이 경우, 추출 챔버(120) 내측이 일정한 압력이 될 때까지 추출 챔버(120) 내측으로 공기가 공급된다(S9). 추출 챔버(120) 내측이 일정한 압력까지 상승하면 커피침전 에어공급밸브(304)를 오프한다(S10).To this end, when the coffee precipitation air supply valve 304 is turned on (S8), air is supplied into the extraction chamber 120 through the first air nozzle 156. In this case, air is supplied into the extraction chamber 120 until the inside of the extraction chamber 120 has a constant pressure (S9). When the inside of the extraction chamber 120 rises to a constant pressure, the coffee settling air supply valve 304 is turned off (S10).
추출 챔버(120) 내측이 일정한 압력까지 상승하면, 커피 분말은 1차 온수(5) 내에서 침전한다. 이때, 커피 분말(1)은 가압력에 의해 커피 분말 내측의 기공이 축소되면서 도 15과 같이 커피 분말(1b)의 크기가 축소된다.When the inside of the extraction chamber 120 rises to a constant pressure, the coffee powder precipitates in the primary hot water 5. At this time, while the pores inside the coffee powder are reduced by the pressing force, the size of the coffee powder 1b is reduced as shown in FIG. 15.
커피 분말(1b)이 침전된 상태로 t1 초 동안 불림이 진행된다(S11). 커피 분말은 이후의 진공단계에서 커피 분말로부터 풍미 성분을 보다 효과적으로 추출할 수 있도록 불림을 통해 조직이 완화된다.The soaking proceeds for t1 seconds while the coffee powder 1b is precipitated (S11). The coffee powder is soaked through the soaking so as to more effectively extract the flavor component from the coffee powder in a subsequent vacuum step.
불림이 완료되면, 2차 온수 공급을 위해 대기압 밸브(305)가 온되고(S12) 추출 챔버(120)의 내측이 대기압 상태로 전환된다. 이때, 커피 분말은 도 15과 같이 부재번호 1b 상태에서 다시 크기가 커지면서 부재번호 1a 상태로 된다. 이어서, t초 후 대기압 밸브(305)는 오프된다(S13).When the soaking is completed, the atmospheric pressure valve 305 is turned on for supplying the second hot water (S12), and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. At this time, the coffee powder is increased in size again in the state of the member number 1b as shown in FIG. Subsequently, the atmospheric pressure valve 305 is turned off after t seconds (S13).
도 5를 참조하면, 온수공급밸브(302,303)가 온되고(S14), 온수 공급 노즐(155)을 통해 t초 동안 소정 량(예를 들면, 200cc)의 2차 온수(5a)가 추출 챔버(120) 내측으로 공급된다. t초 후 온수공급밸브(302,303)가 오프되면(S15), 2차 온수의 공급이 중지된다. 이 경우, 2차 온수(5a)와 먼저 공급된 1차 온수(5)는 서로 섞이게 되는데, 이렇게 섞인 온수에 대해 이하에서는 설명의 편의상 2차 온수(5a)로 언급한다.Referring to FIG. 5, the hot water supply valves 302 and 303 are turned on (S14), and a predetermined amount (for example, 200 cc) of secondary hot water 5a is extracted through the hot water supply nozzle 155 for t seconds. 120) supplied inward. After t seconds, when the hot water supply valves 302 and 303 are turned off (S15), the supply of the secondary hot water is stopped. In this case, the secondary hot water 5a and the first supplied hot water 5 are mixed with each other. Hereinafter, the mixed hot water is referred to as secondary hot water 5a for convenience of description.
커피 분말을 침전시키기 위해, t초 후에 커피침전 에어공급밸브(304)가 온되고(S16), 제1 에어 노즐(156)을 통해 추출 챔버(120) 내측으로 공기가 공급된다. 공기는 추출 챔버(120) 내측이 일정한 압력이 될 때까지 공급된다(S17). 추출 챔버(120) 내측이 일정한 압력까지 상승하면 커피 분말은 다시 크기가 축소되면서 도 14와 같이 2차 온수(5a) 내에서 침전한다. 이어서, 추출 챔버(120) 내측이 일정한 압력에 도달하면 커피침전 에어공급밸브(304)를 오프한다(S18).In order to precipitate the coffee powder, after t seconds, the coffee precipitation air supply valve 304 is turned on (S16), and air is supplied into the extraction chamber 120 through the first air nozzle 156. Air is supplied until the inside of the extraction chamber 120 is a constant pressure (S17). When the inside of the extraction chamber 120 rises to a constant pressure, the coffee powder is reduced in size again and precipitates in the secondary hot water 5a as shown in FIG. 14. Subsequently, when the inside of the extraction chamber 120 reaches a constant pressure, the coffee settling air supply valve 304 is turned off (S18).
커피 분말은 2차 온수(5a)에 침전된 상태로 t2 초 동안 불림이 진행된다(S19). 여기서, t2 초는 전술한 t1 초와 같거나 다를 수 있다. The coffee powder is soaked for t2 seconds while being precipitated in the secondary hot water 5a (S19). Here, t2 seconds may be the same as or different from the aforementioned t1 seconds.
불림이 완료되면, 대기압 밸브(305)가 온되고(S20) 추출 챔버(120)의 내측이 대기압 상태로 전환된다. t초 후 대기압 밸브(305)는 오프된다(S21).When the soaking is completed, the atmospheric pressure valve 305 is turned on (S20) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S21).
1차 진공 불림을 위해 추출 챔버(120)가 진공 상태가 되도록 진공밸브(306,307)를 온시키면(S22), 상기 컴프레서에서 공급된 공기압에 의하여 상기 진공밸브(306)의 공기가 밸브(VG1)을 통해 배출됨과 동시에, 상기 추출챔버(120) 내의 공기가 상기 진공밸브(307) 및 밸브(VG1)를 통해 외부로 배출하게 되고, 그에 따라 추출 챔버(120) 내측은 압력이 점차 낮아져 일정한 압력의 진공 상태에 도달한다(S23). 이어서 진공 상태를 유지하기 위해 진공밸브(306,307)를 오프한다(S24). When the vacuum valves 306 and 307 are turned on so that the extraction chamber 120 is in a vacuum state for the primary vacuum (S22), the air of the vacuum valve 306 is opened by the air pressure supplied from the compressor. Simultaneously with the discharge, the air in the extraction chamber 120 is discharged to the outside through the vacuum valve 307 and the valve (VG1), so that the pressure inside the extraction chamber 120 is gradually lowered to a constant pressure vacuum Reach the state (S23). Subsequently, the vacuum valves 306 and 307 are turned off to maintain the vacuum state (S24).
*진공 상태에서 t3 초 동안 1차 진공 불림을 진행한다. 여기서 t3 초는 앞서 진행된 가압 상태에서의 불림 시간들(t1, t2 초)과 같거나 다를 수 있다.In vacuum, the first vacuum is called for t3 seconds. In this case, t3 seconds may be the same as or different from the soak times t1 and t2 seconds in the advanced pressurization state.
도 15을 참조하면, 대기압 상태에서의 커피 분말(1a)은 진공 상태에서의 1차 진공 불림이 진행되는 동안 그 크기가 증가하게 되고 기공이 넓어진다. 이에 따라 커피 분말(1c) 내측의 기공으로 온수가 침투한다. 커피 분말(1c)의 기공에 물이 침투함에 따라 기공에 존재하던 공기가 커피 분말(1c)로부터 배출되면서 2차 온수(이하, 2차 온수는 커피 분말이 충분히 용해된 상태이므로 '커피'라고 한다)에는 버블이 형성된다.Referring to FIG. 15, the coffee powder 1a in the atmospheric pressure is increased in size and the pores are widened during the first vacuum soaking in the vacuum state. Accordingly, hot water penetrates into the pores inside the coffee powder 1c. As water penetrates the pores of the coffee powder 1c, air existing in the pores is discharged from the coffee powder 1c, and thus the secondary hot water (hereinafter, the secondary hot water is called 'coffee' because the coffee powder is sufficiently dissolved. ) Bubbles are formed.
도 6를 참조하면, t3 초 동안 1차 진공 불림이 진행된 후 대기압 밸브(305)가 온되면(S26), 추출 챔버(120) 내측은 진공 상태에서 대기압 상태로 전환된다. 이때, 커피 분말(1c)의 기공에 침투한 온수는 커피 분말(1c)에 포함된 용해성 풍미 성분과 함께 커피 분말(1c)로부터 배출된다. 이에 따라, 커피 분말(1c)은 온수가 흡수된 후 배출되는 과정을 통해 릴리즈(release)됨에 따라 처음 상태의 커피 분말(1a)의 크기보다 더 커질 수 있다. 이렇게 크기가 커진 커피 분말은 진공 상태에서 다시 대기압 상태로 전환하더라도 원래 크기로 돌아가기는 어렵고, 진공 상태를 거치면서 커진 크기를 유지하게 된다.Referring to FIG. 6, when the atmospheric pressure valve 305 is turned on after the first vacuum soaking is performed for t3 seconds (S26), the inside of the extraction chamber 120 is switched from the vacuum state to the atmospheric pressure state. At this time, hot water penetrating the pores of the coffee powder 1c is discharged from the coffee powder 1c together with the soluble flavor component contained in the coffee powder 1c. Accordingly, the coffee powder 1c may be larger than the size of the coffee powder 1a in its initial state as it is released through a process in which hot water is absorbed and then discharged. This increased coffee powder is difficult to return to its original size even when it is converted from the vacuum state to the atmospheric pressure state, and maintains the increased size through the vacuum state.
이와 같이, 1차 진공 불림에 의해 커피 분말에 포함된 풍미 성분으로 인해 깊은 풍미를 느낄 수 있는 소정 농도의 커피 액이 될 수 있다.In this manner, the first vacuum soaked to be a coffee liquid of a predetermined concentration that can feel a deep flavor due to the flavor component contained in the coffee powder.
대기압 밸브(305)가 온된 후 t초 후에 대기압 밸브(305)가 오프되면(S27), 다시 커피 분말의 침전을 위해, 커피침전 에어공급밸브(304)가 온된다(S28).When the atmospheric pressure valve 305 is turned off after t seconds after the atmospheric pressure valve 305 is turned on (S27), the coffee precipitation air supply valve 304 is turned on to settle the coffee powder again (S28).
이에 따라, 제1 에어 노즐(156)을 통해 추출 챔버(120) 내측으로 공기가 공급되어 추출 챔버(120) 내측이 일정한 압력에 도달하면(S29). 커피 분말(1)은 2차 온수(5a) 내에서 다시 침전한다. 이어서, 추출 챔버(120) 내측이 일정한 압력에 도달하면 커피침전 에어공급밸브(304)를 오프한다(S30).Accordingly, when the air is supplied into the extraction chamber 120 through the first air nozzle 156 to reach a predetermined pressure inside the extraction chamber 120 (S29). The coffee powder 1 precipitates again in the secondary warm water 5a. Subsequently, when the inside of the extraction chamber 120 reaches a constant pressure, the coffee precipitation air supply valve 304 is turned off (S30).
커피 분말(1)이 2차 온수(5a)에 침전된 상태로 t3 초 동안 불림이 진행된다(S31). 여기서, t3 초는 전술한 t1, t2 초와 같거나 다를 수 있다. 불림이 완료되면, 대기압 밸브(305)가 온되고(S32) 추출 챔버(120)의 내측이 대기압 상태로 전환된다. t초 후 대기압 밸브(305)는 오프된다(S33).The soaking proceeds for t3 seconds while the coffee powder 1 is precipitated in the secondary hot water 5a (S31). Here, t3 seconds may be the same as or different from the aforementioned t1 and t2 seconds. When the soaking is completed, the atmospheric pressure valve 305 is turned on (S32) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S33).
이어서, 2차 진공 불림을 위해 추출 챔버(120)를 진공 상태가 되도록 진공밸브(306,307)가 온되면(S34), 추출 챔버(120) 내측은 압력이 점차 낮아져 일정한 압력의 진공 상태에 도달한다(S35). 진공 상태를 유지하기 위해 진공밸브(306,307)를 오프한다(S36). Subsequently, when the vacuum valves 306 and 307 are turned on to make the extraction chamber 120 in a vacuum state for the second vacuum call (S34), the pressure inside the extraction chamber 120 is gradually lowered to reach a constant pressure vacuum state ( S35). In order to maintain the vacuum state, the vacuum valves 306 and 307 are turned off (S36).
진공 상태에서 t4 초 동안 2차 진공 불림을 진행한다. 여기서 t4 초는 앞서 진행된 1차 진공 불림의 시간(t3 초)과 같거나 다를 수 있다. 2차 진공 불림에 의해 전술한 1차 진공 불림에서와 마찬가지로 커피 분말의 기공으로 물이 침투한다.In vacuum, a second vacuum soak is performed for t4 seconds. Here, t4 seconds may be the same as or different from the time (t3 seconds) of the first vacuum soaking. By secondary vacuum soaking, water penetrates into the pores of the coffee powder as in the first vacuum soak described above.
도 7를 참조하면, 대기압 밸브(305)가 온된 후(S38) t초 후에 대기압 밸브(305)가 오프되면(S39), 다시 커피 분말의 침전을 위해, 커피침전 에어공급밸브(304)가 온된다(S40).Referring to FIG. 7, when the atmospheric pressure valve 305 is turned off after t seconds after the atmospheric pressure valve 305 is turned on (S38) (S39), in order to settle the coffee powder, the coffee settling air supply valve 304 is turned on. It becomes (S40).
이에 따라, 제1 에어 노즐(156)을 통해 추출 챔버(120) 내측으로 공기가 공급되어 추출 챔버(120) 내측이 일정한 압력에 도달하면(S41). 커피 분말(1)은 2차 온수(5a) 내에서 다시 침전한다. 이어서, 추출 챔버(120) 내측이 일정한 압력에 도달하면 커피침전 에어공급밸브(304)를 오프한다(S42).Accordingly, when the air is supplied into the extraction chamber 120 through the first air nozzle 156 so that the inside of the extraction chamber 120 reaches a constant pressure (S41). The coffee powder 1 precipitates again in the secondary warm water 5a. Subsequently, when the inside of the extraction chamber 120 reaches a predetermined pressure, the coffee settling air supply valve 304 is turned off (S42).
커피 분말(1)이 2차 온수(5a)에 침전된 상태로 t4 초 동안 불림이 진행된다(S43). 여기서, t4 초는 전술한 t1, t2 초와 같거나 다를 수 있다. 불림이 완료되면, 대기압 밸브(305)가 온되고(S44) 추출 챔버(120)의 내측이 대기압 상태로 전환된다. t초 후 대기압 밸브(305)는 오프된다(S45). 이때, 커피 분말의 기공에 침투한 온수는 다시 커피 분말에 포함된 용해성 풍미 성분과 함께 커피 분말로부터 배출된다.In the state in which the coffee powder 1 is precipitated in the secondary hot water 5a, the soaking proceeds for t4 seconds (S43). Here, t4 seconds may be the same as or different from the aforementioned t1 and t2 seconds. When the soaking is completed, the atmospheric pressure valve 305 is turned on (S44) and the inside of the extraction chamber 120 is switched to the atmospheric pressure state. After t seconds, the atmospheric pressure valve 305 is turned off (S45). At this time, the hot water penetrated into the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder.
이어서, 커피를 추출하기 위해 커피추출 밸브(308)를 온시켜(S46) 커피 수용부(143)를 개방한 후, 커피침전 에어공급밸브(304)를 온시켜(S47) 추출 챔버(120)의 내측에 공기를 공급하여 추출 챔버(120)에 담긴 커피 분말이 용해된 커피를 하방향으로 가압한다.Subsequently, the coffee extraction valve 308 is turned on to extract the coffee (S46), the coffee container 143 is opened, and the coffee settling air supply valve 304 is turned on (S47) of the extraction chamber 120. The air is supplied to the inside to press down the coffee in which the coffee powder contained in the extraction chamber 120 is dissolved.
커피는 공기압에 의해 t5 초 동안 필터(141)를 거친 후 커피 수용부(143)로 저장된 후 곧이어 커피 노즐(107)을 통해 커피 추출 장치(10) 외부로 배출된다. 여기서, t5 초는 추출 챔버(120) 내의 커피가 대부분 배출될 수 있는 정도의 시간이다. t5 초 후 커피추출 밸브(308)가 오프된다(S50).After passing through the filter 141 for t5 seconds by the air pressure, the coffee is stored in the coffee container 143 and then immediately discharged out of the coffee extraction device 10 through the coffee nozzle 107. Here, t5 seconds is the amount of time that most of the coffee in the extraction chamber 120 can be discharged. After t5 seconds, the coffee extraction valve 308 is turned off (S50).
도 8를 참조하면, 커피 추출이 완료된 후 대기압 밸브(305)가 온되면(S51), 추출 챔버(120)의 내측은 대기압 상태로 된다. 이어서 대기압 밸브(305)가 오프된다(S52).Referring to FIG. 8, when the atmospheric pressure valve 305 is turned on after the coffee extraction is completed (S51), the inside of the extraction chamber 120 is in an atmospheric pressure state. Subsequently, the atmospheric pressure valve 305 is turned off (S52).
이어서, 씰링 하우징 구동 밸브(301)가 오프되면, 구동 커버(150)와 씰링 하우징(151) 사이의 공기가 배출된다. 이에 따라, 씰링 하우징(151)은 스프링(153)의 탄성력에 의해 상승한다(S53). Subsequently, when the sealing housing drive valve 301 is turned off, air between the drive cover 150 and the sealing housing 151 is discharged. Accordingly, the sealing housing 151 is raised by the elastic force of the spring 153 (S53).
피스톤 유닛(140) 위에 남겨진 커피 케이크(3)를 수거하기 위해, 도 16과 같이 피스톤 구동 밸브(309)를 온 시켜 피스톤 유닛(140)을 상승시킨다(S54). 커피 케이크(3)는 피스톤에 의해 추출 챔버(120) 외측으로 이동한다.In order to collect the coffee cake 3 left on the piston unit 140, the piston drive valve 309 is turned on as shown in FIG. 16 to raise the piston unit 140 (S54). The coffee cake 3 is moved out of the extraction chamber 120 by a piston.
이어서, 구동 커버(150)를 도 17와 같이 제2 위치에서 제1 위치로 이동시킨면(S55), 커피 케이크(3)는 구동 커버(150)의 일측에 결합된 스크레이퍼(152)에 의해 밀려서 구동 커버(150)와 함께 제1 위치로 이동되고, 커피 케이크 투입구(104)를 통해 커피 케이크 수거용기(110) 내측으로 수거된다(S56).Subsequently, when the driving cover 150 is moved from the second position to the first position as shown in FIG. 17 (S55), the coffee cake 3 is pushed by the scraper 152 coupled to one side of the driving cover 150. The driving cover 150 is moved to the first position and is collected into the coffee cake collecting container 110 through the coffee cake inlet 104 (S56).
이어서, 피스톤 구동 밸브(309)를 오프하여 피스톤 유닛(140)을 원위치로 하강시키고(S57), 구동 커버(150)을 제1 위치에서 제2 위치로 이동시킨다(S58).Subsequently, the piston drive valve 309 is turned off to lower the piston unit 140 to its original position (S57), and the drive cover 150 is moved from the first position to the second position (S58).
한편, 전술한 커피 추출 단계는 추출 챔버(120)로 공기를 공급하여 공기압에 의해 추출 챔버로부터 배출되는 것으로 설명하였으나 이에 제한되지 않는다. On the other hand, the above coffee extraction step has been described as being discharged from the extraction chamber by the air pressure by supplying air to the extraction chamber 120, but is not limited thereto.
즉, 도 9와 같이, 커피추출 밸브(308)가 온된 상태에서(S46') 피스톤 유닛(140)을 상승시킨다(S47'). 이 경우, 추출 챔버(120) 내측은 대략 2 bar의 압력을 유지하게 되며, 피스톤(140)은 커피 추출 속도를 고려하여 상승속도가 제어된다. That is, as shown in FIG. 9, in the state where the coffee extraction valve 308 is turned on (S46 ′), the piston unit 140 is raised (S47 ′). In this case, the inside of the extraction chamber 120 maintains a pressure of approximately 2 bar, the piston 140 is controlled to increase the speed in consideration of the coffee extraction speed.
이 경우, 추출 챔버(120)의 체적이 점차 줄어들게 되며, 추출 챔버(120) 내측의 커피는 피스톤 유닛(140)의 가압력에 의해 필터(141) 및 커피 수용부(143)를 거쳐 커피 노즐(107)을 통해 커피 추출 장치(10) 외부로 배출된다.In this case, the volume of the brewing chamber 120 gradually decreases, and the coffee inside the brewing chamber 120 passes through the filter 141 and the coffee container 143 by the pressing force of the piston unit 140, and then the coffee nozzle 107. Through the coffee extraction device 10 is discharged.
이와 같이 피스톤(140) 상승에 의해 커피 추출이 완료되면, 커피추출 밸브(308)를 오프하고(S48'), 대기압 밸브(305)를 온한 상태에서(S49') 피스톤(140)을 원위치로 하강시킨다(S50').When the coffee extraction is completed by raising the piston 140 as described above, the coffee extraction valve 308 is turned off (S48 '), and the piston 140 is lowered to its original position while the atmospheric pressure valve 305 is turned on (S49'). (S50 ').
피스톤(140)을 상승시켜 커피를 추출하는 실시예에서는, 도 9의 단계들이 모두 수행되면 도 8에 도시된 단계들로 이어진다. 이때, 도 8에서 대기압 밸브(305)를 온시키는 단계(S51)는 생략할 수 있는데, 이는 이미 도 9의 대기압 밸브(305)를 온시키는 단계(S49')가 있기 때문이다.In an embodiment in which the piston 140 is raised to extract coffee, all of the steps in FIG. 9 are performed and the steps shown in FIG. 8 are followed. In this case, the step S51 of turning on the atmospheric pressure valve 305 in FIG. 8 may be omitted since the step S49 ′ of turning on the atmospheric pressure valve 305 of FIG. 9 is already present.
상기한 바와 같이 본 발명은 추출 챔버 내측으로 에어를 공급함으로써 공기압에 의해 커피를 추출하거나, 피스톤을 상승시켜 커피를 추출할 수 있다.As described above, the present invention can extract coffee by pneumatic pressure or raise the piston to extract coffee by supplying air into the extraction chamber.
본 발명은 추출되는 커피의 맛을 온도와 압력을 조절하여 커피의 농도를 달리할 수 있고, 이에 따라 짙은 맛(쓴 맛) 또는 풍미가 많은 순한 맛으로 추출할 수 있다. 예를 들어, 짙은 맛의 커피를 추출하기 위해서는 가압력을 상승시키고 추출 시간을 늘린다. 또한, 순한 맛의 커피를 추출하기 위해서는 진공 시간을 늘리거나 가압력을 늘린다. 여기서 시간을 늘린다는 의미는 해당 단계 즉, 가압력을 가한 상태의 시간을 길게 하는 것이거나, 가압력 단계를 여러 번 수행함으로써 전체 시간의 총합을 늘리는 것을 의미한다.The present invention can vary the concentration of coffee by adjusting the temperature and pressure of the taste of the coffee to be extracted, and thus can be extracted into a mild taste with a rich taste (bitter taste) or flavor. For example, in order to brew dark coffee, the pressing force is increased and the brewing time is increased. In addition, in order to extract a mild taste coffee, the vacuum time is increased or the pressing force is increased. In this case, the increase in time means to increase the time of the step, that is, the pressing force, or to increase the total of the total times by performing the pressing force step several times.
한편, 본 발명의 커피 추출 장치(10)는 온수 버튼(109)을 누르면 보일러(170)에 연결된 온수 밸브(310)가 온되면서 보일러(170) 내측에 저장된 온수가 온수 노즐(108)을 통해 배출된다. 이 경우 온수의 배출은 커피 추출과 별도로 이루어진다.Meanwhile, when the hot water button 109 is pressed, the coffee extracting apparatus 10 of the present invention turns on the hot water valve 310 connected to the boiler 170 while the hot water stored inside the boiler 170 is discharged through the hot water nozzle 108. do. In this case, the discharge of hot water takes place separately from the coffee extraction.
또한, 커피 추출 장치(10)는 추출 챔버(120)를 청소하기 위한 에어를 공급하는 에어공급밸브(312)를 구비할 수 있다. 추출 챔버(120)를 청소하는 경우, 추출 챔버(120) 내에 소정 량의 물을 투입하고, 에어공급밸브(312)를 온시키면, 에어공급라인(144)을 통해 커피 수용부(143)로 공기가 주입된다. 커피 수용부(143)로 주입되는 에어는 버블로 변하면서 추출 챔버(120) 내측에 붙은 젖은 커피 분말이나 커피 케이크의 잔류물 등을 박리함으로써 청소를 행할 수 있다. 이 경우, 피스톤 유닛(140)은 커피 수용부(143) 내측으로 공기를 공급하고, 그 역방향은 공기의 공급이 불가능한 원 웨이 밸브(140b)를 구비한다.In addition, the coffee extraction device 10 may be provided with an air supply valve 312 for supplying air for cleaning the extraction chamber 120. When the extraction chamber 120 is cleaned, a predetermined amount of water is introduced into the extraction chamber 120, and when the air supply valve 312 is turned on, the air is supplied to the coffee receiving unit 143 through the air supply line 144. Is injected. The air injected into the coffee receptacle 143 may be cleaned by peeling the wet coffee powder, the residue of the coffee cake, etc. adhered to the inside of the extraction chamber 120 while turning into a bubble. In this case, the piston unit 140 supplies air to the coffee container 143, and the reverse direction includes a one-way valve 140b that cannot supply air.
본 발명은 커피 침전, 불림 및 진공 불림은 적어도 2회 이상 진행된다. 하지만, 본 발명에 따른 커피 추출 방법은 이에 제한되지 않고 커피 침전, 불림 및 진공 불림을 순차적으로 각 1회씩 진행하는 것도 가능하다. 바람직하게는 상기 제어부(400)의 제어에 따라 순차적으로 2 내지 4회를 반복 수행하도록 한다.In the present invention, coffee precipitation, soaking and vacuum soaking are performed at least twice. However, the coffee extraction method according to the present invention is not limited thereto, and coffee precipitation, soaking and vacuum soaking may be sequentially performed once each. Preferably, the control unit 400 repeatedly performs 2 to 4 times sequentially.
또한, 본 발명은 가압 상태에서 커피 분말을 온수에 침전시키고, 진공 상태에서 커피 분말의 미세한 기공 속으로 강제로 물을 침투시키며, 대기압 상태로 전환하여 커피 분말의 미세한 기공으로부터 물을 강제로 배출시킨다. 이에 따라 커피 분말에 포함된 용해성 풍미 성분을 커피 분말로부터 추출할 수 있다.In addition, the present invention precipitates the coffee powder in hot water in a pressurized state, forcibly penetrates water into the fine pores of the coffee powder in a vacuum state, and forcibly discharges water from the fine pores of the coffee powder by switching to an atmospheric pressure state. . Thereby, the soluble flavor component contained in the coffee powder can be extracted from the coffee powder.
이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형 실시예들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어서는 안 될 것이다.While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (22)

  1. 커피 분말을 추출 챔버에 투입하는 단계;Introducing coffee powder into the extraction chamber;
    상기 추출 챔버의 내측에 온수를 투입하는 단계;Injecting hot water into the extraction chamber;
    상기 커피 분말을 침전 상태에서 불리기(soak) 위해 상기 추출 챔버의 내측을 가압하는 가압단계;Pressurizing the inside of the extraction chamber to soak the coffee powder in a precipitated state;
    상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;Switching the inside of the extraction chamber to an atmospheric pressure state;
    상기 커피 분말의 크기를 늘려 상기 커피 분말의 기공으로 온수를 침투시키기 위해 상기 추출 챔버의 내측을 진공 상태로 전환하는 진공단계; 및A vacuum step of converting the inside of the extraction chamber into a vacuum state in order to increase the size of the coffee powder to infiltrate hot water into the pores of the coffee powder; And
    상기 커피 분말의 기공에 침투한 물이 커피 분말에 포함된 용해성 풍미 성분과 함께 커피 분말로부터 배출되도록 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 포함하는 것을 특징으로 하는 커피 추출 방법.And converting the inside of the extraction chamber into an atmospheric pressure state so that the water penetrated into the pores of the coffee powder is discharged from the coffee powder together with the soluble flavor component contained in the coffee powder.
  2. 제1항에 있어서,The method of claim 1,
    상기 가압단계는 적어도 2회 반복되는 것을 특징으로 하는 커피 추출 방법.Wherein said pressing step is repeated at least twice.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 진공단계는 적어도 2회 이상 반복되는 것을 특징으로 하는 커피 추출 방법.The vacuum step is characterized in that the coffee extraction method is repeated at least twice.
  4. 제3항에 있어서,The method of claim 3,
    상기 각 진공단계 사이에, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측을 가압하는 추가 가압단계;를 더 포함하는 것을 특징으로 하는 커피 추출 방법.Between each vacuum step, a further pressurizing step of pressing the inside of the extraction chamber to call the coffee powder in the settled state; coffee extraction method further comprising.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 추가 가압단계의 전과 후에 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 더 포함하는 커피 추출 방법.And converting the inside of the extraction chamber to an atmospheric pressure state before and after the additional pressurization step.
  6. 제1항에 있어서,The method of claim 1,
    상기 가압단계는,The pressing step,
    1차 온수 투입 후 상기 추출 챔버의 내측을 가압하는 1차 가압단계;A first pressurizing step of pressurizing the inside of the extraction chamber after the first hot water is added;
    상기 1차 가압단계 후 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계; 및Converting the inside of the extraction chamber to an atmospheric pressure state after the first pressurization step; And
    1차 온수보다 더 많은 양의 2차 온수를 투입 후 상기 추출 챔버의 내측을 가압하는 2차 가압단계;를 포함하는 것을 특징으로 하는 커피 추출 방법.And a second pressurizing step of pressurizing an inner side of the extraction chamber after inputting a larger amount of secondary hot water than the primary hot water.
  7. 제1항에 있어서,The method of claim 1,
    상기 추출 챔버 내의 피스톤을 상승시켜 상기 추출 챔버 내의 공기층을 가압함으로써 상기 추출 챔버를 압축하여 상기 추출 챔버 내측에 커피 분말로부터 추출된 커피를 배출하는 커피 추출 방법.And extracting the coffee extracted from the coffee powder inside the extraction chamber by compressing the extraction chamber by raising the piston in the extraction chamber to pressurize the air layer in the extraction chamber.
  8. 제1항에 있어서,The method of claim 1,
    상기 추출 챔버 내측에 공기압을 가하여 상기 추출 챔버 내의 공기층을 가압함으로써 상기 추출 챔버를 압축하여 상기 추출 챔버 내측에 커피 분말로부터 추출된 커피를 배출하는 커피 추출 방법.Compressing the extraction chamber by applying an air pressure inside the extraction chamber to pressurize the air layer in the extraction chamber to discharge coffee extracted from the coffee powder inside the extraction chamber.
  9. 커피 분말을 추출 챔버에 투입하는 단계;Introducing coffee powder into the extraction chamber;
    상기 추출 챔버의 내측에 1차 온수를 투입하고, 상기 커피 분말을 침전 상태에서 불리기(soak) 위해 상기 추출 챔버의 내측을 가압하는 1차 가압단계;A first pressurizing step of putting primary hot water into the extraction chamber and pressing the inside of the extraction chamber to soak the coffee powder in a precipitated state;
    상기 추출 챔버의 내측에 상기 1차 온수의 양보다 더 많은 양의 2차 온수를 투입하고, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 2차 가압단계;A second pressurizing step of inputting a larger amount of secondary hot water than the amount of the primary hot water into the extraction chamber, and applying pressure to the inside of the extraction chamber so that the coffee powder is called in a precipitated state;
    상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말의 기공에 온수를 강제 침투시키기 위해 진공 상태로 전환하는 1차 진공단계;A first vacuum step of converting the inside of the extraction chamber to an atmospheric pressure state and then converting the vacuum chamber into a vacuum state in order to forcibly infiltrate hot water into the pores of the coffee powder;
    상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 3차 가압단계;A third pressurizing step of applying a pressure to the inside of the extraction chamber to turn the inside of the extraction chamber into an atmospheric pressure state and to soak the coffee powder in the settled state;
    상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말의 기공에 온수를 강제 침투시키기 위해 진공 상태로 전환하는 2차 진공단계;A second vacuum step of converting the inside of the extraction chamber into an atmospheric pressure state and then converting the vacuum chamber into a vacuum state to force hot water into the pores of the coffee powder;
    상기 추출 챔버의 내측을 대기압 상태로 전환 후, 상기 커피 분말을 침전 상태에서 불리기 위해 상기 추출 챔버의 내측에 압력을 가하는 4차 가압단계; 및After converting the inside of the extraction chamber to an atmospheric pressure state, applying a pressure to the inside of the extraction chamber to cause the coffee powder to be called in a precipitated state; And
    상기 커피 분말의 기공에 침투한 물이 커피 분말에 포함된 용해성 풍미 성분과 함께 상기 커피 분말로부터 배출시키기 위해 상기 추출 챔버의 내측을 대기압 상태로 전환하는 단계;를 포함하는 것을 특징으로 하는 커피 추출 방법.Converting the inside of the extraction chamber into an atmospheric pressure state for discharging water penetrating the pores of the coffee powder from the coffee powder together with the soluble flavor component contained in the coffee powder; .
  10. 추출 챔버;Extraction chamber;
    상기 추출 챔버의 내측을 따라 이동하며, 커피를 배출하는 배출구를 가지는 피스톤;A piston moving along the inside of the extraction chamber and having a discharge port for discharging coffee;
    상기 피스톤을 왕복 구동하는 구동 실린더;A drive cylinder for reciprocating the piston;
    내측에 상기 추출 챔버의 개구를 개폐하도록 승강하는 씰링 하우징을 구비한 구동 커버;A drive cover having a sealing housing for moving up and down to open and close the opening of the extraction chamber;
    상기 구동 커버의 측면과 상기 씰링 하우징의 측면 사이에 배치되어 상기 씰링 하우징을 상승하는 방향으로 탄성력을 작용하는 탄성 부재;An elastic member disposed between a side surface of the driving cover and a side surface of the sealing housing to exert an elastic force in a direction of raising the sealing housing;
    상기 구동 커버를 좌우로 구동하는 구동부;A driving unit for driving the driving cover left and right;
    상기 추출 챔버 내측을 대기압 상태, 가압 상태 및 진공 상태 중 어느 하나의 상태로 변경하는 압력조절부;A pressure controller for changing the inside of the extraction chamber to any one of an atmospheric pressure state, a pressurized state, and a vacuum state;
    상기 씰링 하우징을 통해 상기 추출 챔버 내측으로 공급하기 위한 온수를 저장하는 보일러;A boiler for storing hot water for supplying into the extraction chamber through the sealing housing;
    상기 추출 챔버로부터 커피가 배출되는 커피 배출라인; 및A coffee discharge line through which coffee is discharged from the extraction chamber; And
    상기 커피 배출라인을 개폐하는 커피 추출밸브;를 포함하는 것을 특징으로 하는 커피 추출 장치.And a coffee extraction valve for opening and closing the coffee discharge line.
  11. 제10항에 있어서,The method of claim 10,
    상기 구동 커버는 외측에 커피 케이크를 밀어서 이동시키는 스크레이퍼를 구비하는 것을 특징으로 하는 커피 추출 장치. The drive cover is a coffee extraction device, characterized in that having a scraper for moving the coffee cake to the outside to move.
  12. 제11항에 있어서,The method of claim 11,
    상기 구동 커버는 커피 케이크를 제거하기 위한 커피 케이크 투입구에 대응하는 제1 위치와, 상기 추출 챔버의 개구에 대응하는 제2 위치로 이동하는 것을 특징으로 하는 커피 추출 장치.And the drive cover moves to a first position corresponding to the coffee cake inlet for removing the coffee cake and to a second position corresponding to the opening of the extraction chamber.
  13. 제10항에 있어서,The method of claim 10,
    상기 씰링 하우징은 상기 구동 커버에 구비된 탄성 부재의 탄성력에 의해 상승하여 상기 추출 챔버의 개구를 개방하는 제3 위치와, 상기 압력조절부에 의해 상기 구동커버와 상기 씰링 하우징 사이로 공급되는 상기 탄성부재의 탄성력보다 큰 공기압에 의해 하강하여 상기 추출 챔버의 개구를 폐쇄하는 제4 위치로 이동하는 것을 특징으로 하는 커피 추출 장치.The sealing housing is lifted by the elastic force of the elastic member provided in the driving cover to open the opening of the extraction chamber, and the elastic member supplied between the driving cover and the sealing housing by the pressure adjusting unit The coffee extraction device, characterized in that the lowering by the air pressure greater than the elastic force of the move to the fourth position to close the opening of the extraction chamber.
  14. 제10항에 있어서,The method of claim 10,
    상기 압력조절부는 커피분말 및 온수가 투입된 추출 챔버 내부를 설정된 압력을 가하여 설정된 시간동안 가압상태를 유지하는 에어공급밸브;The pressure control unit is an air supply valve for maintaining a pressurized state for a set time by applying a set pressure to the inside of the extraction chamber into which the coffee powder and hot water is added;
    상기 추출 챔버의 내부를 설정된 크기의 진공 상태로 전환하여 설정된 시간동안 진공상태를 유지지키는 진공밸브; 및A vacuum valve which maintains a vacuum state for a set time by converting the inside of the extraction chamber into a vacuum state of a set size; And
    상기 추출 챔버 내부를 상기 각 가압상태 또는 진공상태에서 대기압 상태로 전환하여 설정된 시간동안 대기압 상태로 유지시키는 대기압밸브;를 포함하며,And an atmospheric pressure valve for switching the inside of the extraction chamber from the pressurized state or the vacuum state to an atmospheric pressure state and maintaining the atmospheric pressure state for a set time.
    상기 각 밸브를 설정된 순서 및 시간에 따라 자동 제어하는 제어부;를 더 포함하여 구성된 것을 특징으로 하는 커피추출장치.And a control unit for automatically controlling the valves according to a set order and time.
  15. 다수의 압력조절용 밸브를 설정된 순서 및 시간에 따라 자동 제어하는 제어부(400)에 의해 구동하는 에어 컴프레서(200)로부터의 압축공기를 이용하여 커피 추출챔버(120) 내부를 진공, 대기압 또는 가압상태 중 하나를 선택 전환시키는 과정을 통해 추출챔버(120) 내의 커피 분말에 포함된 용해성 풍미 성분을 추출하는 커피추출장치를 이용한 커피추출방법에 있어서,Using the compressed air from the air compressor 200 driven by the control unit 400 that automatically controls a plurality of pressure regulating valves according to a set order and time, the inside of the coffee extraction chamber 120 is vacuum, atmospheric or pressurized. In the coffee extraction method using a coffee extraction device for extracting the soluble flavor component contained in the coffee powder in the extraction chamber 120 through the process of selecting one,
    상기 커피분말 및 물이 투입된 추출챔버(120)의 입구를 구동커버(150)를 이동시켜 밀폐시키는 제1과정;A first process of closing the inlet of the extraction chamber 120 into which the coffee powder and water are introduced by moving the driving cover 150;
    상기 컴프레서(200)에 의해 공급된 공기의 흐름을 제어하는 커피침전 에어공급밸브(304)를 온시켜 상기 구동커버(150)에 구비된 제1에어노즐(156)을 통해 상기 추출챔버(120) 내부로 공급하여 압력을 상승시키는 제2과정;The extraction chamber 120 is turned on through the first air nozzle 156 provided in the driving cover 150 by turning on the coffee settling air supply valve 304 that controls the flow of air supplied by the compressor 200. A second process of increasing the pressure by supplying the inside;
    상기 제2과정을 통해 설정된 일정 압력으로 상승됨에 따라 상기 커피침전 에어공급밸브(304)를 오프시켜 설정된 시간을 유지하는 제3과정;A third step of maintaining the set time by turning off the coffee settling air supply valve 304 as it rises to a predetermined pressure set through the second step;
    상기 제어부(400)의 제어에 의하여 대기압밸브(305)를 온시켜 상기 추출챔버 (120)내부의 공기를 상기 제1에어노즐(156)을 통해 배출시켜 대기압 상태로 전환됨에 따라 상기 대기압밸브(305)를 오프시켜 설정된 시간동안 대기압 상태를 유지하는 제4과정;The atmospheric pressure valve 305 is turned on by turning on the atmospheric pressure valve 305 under the control of the controller 400, thereby discharging air in the extraction chamber 120 through the first air nozzle 156 and switching to the atmospheric pressure state. Turning off) to maintain the atmospheric pressure for a set time;
    상기 제어부(400)의 제어에 의하여 진공밸브(306, 307)를 온시켜 상기 추출챔버(120) 내부의 공기를 상기 제1에어노즐(156)을 통해 배출시켜 진공압력을 상승시키는 제5과정;A fifth process of turning on the vacuum valves 306 and 307 under the control of the controller 400 to discharge the air inside the extraction chamber 120 through the first air nozzle 156 to increase the vacuum pressure;
    상기 제5과정에서 진공압력이 설정된 진공압력까지 상승하면 상기 진공밸브(306,307)를 오프시켜 설정된 시간동안 유지하는 제6과정; 및A sixth process of turning off the vacuum valves 306 and 307 when the vacuum pressure rises to the set vacuum pressure in the fifth process; And
    상기 제어부(400)의 제어에 의하여 상기 대기압밸브(305)를 온 시켜 상기 추출챔버(120) 내부의 공기를 제1에어노즐(156)을 통해 공급하여 대기압 상태로 전환되면, 상기 대기압밸브(305)를 오프시킨 후 설정된 시간을 유지하는 제7과정; 및When the atmospheric pressure valve 305 is turned on under the control of the control unit 400, and the air inside the extraction chamber 120 is supplied through the first air nozzle 156 to be converted into the atmospheric pressure state, the atmospheric pressure valve 305 A seventh process of maintaining a set time after turning off); And
    상기 제어부(400)의 제어에 의하여 커피추출 밸브(308)를 온시켜 추출챔버(120)의 커피분말이 용해된 커피을 추출하는 제8과정;을 포함하며,An eighth process of turning on the coffee extraction valve 308 under the control of the control unit 400 to extract coffee in which the coffee powder of the extraction chamber 120 is dissolved;
    상기 제2 내지 제7과정은 상기 제어부(400)의 제어에 의해 설정된 횟수에 따라 선택 및 반복 수행하는 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.The second to seventh processes are selected and repeated according to the number of times set by the control of the control unit 400 coffee extraction method using a coffee extraction device.
  16. 제15항에 있어서,The method of claim 15,
    상기 제1과정은 상기 구동커버(150)를 상기 추출챔버의 상단 입구에 위치시키는 11단계;The first process comprises the step 11 of positioning the drive cover 150 at the upper inlet of the extraction chamber;
    상기 제어부(400)의 제어에 의하여 씰링 하우징 구동밸브(301)를 온 시킴에 따라 제2 에어노즐(157)을 통해 상기 구동커버(150)의 내측에 구비된 씰링 하우징(151)의 상면 사이로 공기압을 공급하는 12단계; 및As the sealing housing driving valve 301 is turned on by the control of the controller 400, the air pressure is supplied between the upper surfaces of the sealing housing 151 provided inside the driving cover 150 through the second air nozzle 157. 12 steps to supply; And
    상기 제2 에어노즐(157)을 통해 공급된 공기압에 의해 상기 씰링 하우징(151)이 하강하여 상기 추출챔버(120)를 밀폐시키는 13단계;를 포함하여 이루어진 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.The sealing housing 151 is lowered by the air pressure supplied through the second air nozzle 157 13 to seal the extraction chamber 120; Coffee using a coffee extraction device comprising a Extraction method.
  17. 제15항에 있어서,The method of claim 15,
    상기 제5과정은 상기 각 진공밸브(306)(307)를 온 시킴에 따라 상기 컴프레서에서 공급된 공기압에 의하여 상기 진공밸브(306)(307) 사이로 상기 추출챔버(120) 내의 공기를 외부로 배출하는 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.In the fifth process, as each of the vacuum valves 306 and 307 is turned on, air in the extraction chamber 120 is discharged to the outside between the vacuum valves 306 and 307 by the air pressure supplied from the compressor. Coffee extraction method using a coffee extraction device, characterized in that.
  18. 제15항에 있어서,The method of claim 15,
    상기 제8과정은 커피추출밸브(308)를 온시켜 커피 수용부(143)를 개방하는 21단계;The eighth process may include a step 21 of opening the coffee container 143 by turning on the coffee extraction valve 308;
    상기 커피침전 에어공급밸브(304)를 온시켜 상기 추출챔버(120) 내측에 공기를 공급하여 커피를 하방향으로 일정 시간동안 가압하는 22단계; 및Turning on the coffee settling air supply valve 304 to supply air into the extraction chamber 120 to pressurize the coffee downward for a predetermined time; And
    상기 22단계에 의해 커피노즐(107)을 통해 커피를 외부로 배출 후 상기 커피침전 에어공급밸브(304) 및 커피추출밸브(308)를 오프시키는 23단계;를 포함하여 이루어진 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법. After the coffee is discharged to the outside through the coffee nozzle 107 by the step 22, step 23 of turning off the coffee settle air supply valve 304 and the coffee extraction valve 308; Coffee extraction method using the device.
  19. 제15항에 있어서,The method of claim 15,
    상기 제8과정은 커피추출밸브(308)를 온시켜 커피 수용부(143)를 개방하는 31단계;The eighth process includes the step 31 of opening the coffee container 143 by turning on the coffee extraction valve 308;
    상기 추출챔버(120) 하단에 구비된 피스톤 유닛(140)을 설정된 속도로 상승시켜 추출챔버(120)의 내부를 설정된 압력으로 유지시키는 32단계;A step 32 of raising the piston unit 140 provided at the lower end of the extraction chamber 120 at a set speed to maintain the interior of the extraction chamber 120 at a set pressure;
    상기 피스톤 유닛(140)이 상승함에 따라 커피가 외부로 배출이 완료되면 커피추출밸브(308)를 오프시키고, 대기압 밸브(305)를 온시키는 33단계; 및Step 33 of turning off the coffee extraction valve 308 and turning on the atmospheric pressure valve 305 when the piston unit 140 ascends to discharge the coffee to the outside; And
    상기 피스톤 유닛(140)을 원위치로 하강시키는 34단계;를 포함하여 이루어진 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.And a step 34 of lowering the piston unit 140 to its original position. Coffee extraction method using a coffee extraction device comprising a.
  20. 제15항에 있어서,The method of claim 15,
    상기 제2 내지 제7과정은 상기 제어부(400)의 제어에 따라 순차적으로 2 내지 4회를 반복 수행하는 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.Wherein the second to seventh process is a coffee extraction method using a coffee extraction device, characterized in that for repeating 2 to 4 times sequentially under the control of the control unit 400.
  21. 제15항에 있어서,The method of claim 15,
    상기 제1과정에 부가하여 설정된 시간동안 온수밸브(310)을 온시켜, 상기 추출챔버(120) 내부로 1차 온수를 공급하는 41단계; 및A 41 step of supplying primary hot water into the extraction chamber 120 by turning on the hot water valve 310 for a predetermined time in addition to the first process; And
    상기 제4과정에 부가하여 설정된 시간동안 온수밸브(310)를 온시켜, 상기 추출챔버(120) 내부로 2차 온수를 공급하는 42단계;를 더 포함하는 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.In addition to the fourth process, by turning on the hot water valve 310 for a predetermined time, and supplying the second hot water into the extraction chamber 120; Coffee further comprising a coffee extracting device Extraction method.
  22. 제15항에 있어서,The method of claim 15,
    상기 제8과정에 부가하여, 상기 추출챔버(120)가 대기압상태에서 제어부(400)의 제어에 의하여 씰링 하우징 구동밸브(301)을 오프시키는 51단계;In addition to the eighth step, the extraction chamber 120, step 51 to turn off the sealing housing drive valve 301 by the control of the control unit 400 in the atmospheric pressure state;
    상기 구동커버(150)과 씰링 하우징(151) 사이의 공기가 배출되어 상기 씰링 하우징(151)이 상승하는 52단계;Step 52, wherein the air is discharged between the driving cover 150 and the sealing housing 151 to raise the sealing housing 151;
    상기 피스톤 구동밸브(209)를 온시켜 피스톤 유닛(140)을 상기 추출챔버(120)의 상부 끝단 제1위치까지 상승시켜, 커피케이크(30)를 상기 추출챔버(120) 외측으로 이동시키는 53단계; 및Step 53 of turning the piston drive valve 209 to raise the piston unit 140 to the first position of the upper end of the extraction chamber 120 to move the coffee cake 30 to the outside of the extraction chamber 120 ; And
    상기 구동커버(150)를 측방향으로 이동시켜 구동커버(150) 하단에 결합된 스크레이퍼(152)에 의해 상기 커피 케이크를 수거용기까지 이동시키는 54단계;를 포함하여 이루어진 것을 특징으로 하는 커피추출장치를 이용한 커피추출방법.The step of moving the drive cover 150 in the lateral direction by the scraper 152 coupled to the drive cover 150, the step 54 to move the coffee cake to the collection container; coffee extraction device comprising a Coffee extraction method using.
PCT/KR2018/002214 2017-02-28 2018-02-22 Coffee extracting apparatus and coffee extracting method using same WO2018159958A1 (en)

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KR1020170026220A KR101820018B1 (en) 2017-02-28 2017-02-28 Coffee or tea extracting apparatus
KR1020170094621A KR101814535B1 (en) 2017-07-26 2017-07-26 Coffee or tea extracting Method

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