KR102638499B1 - coffee maker - Google Patents

Abstract

The coffee maker according to the present invention includes a water purification filter, an instantaneous hot water module, a coffee holder, and a control unit, and selectively extracts coffee, black tea, and green tea, and provides purified water filtered through a water purification filter as water for beverage extraction. By applying a Rutenox heater as an instantaneous hot water module, not only does it shorten the heating waiting time, but it also automatically adjusts the beverage discharge amount step by step according to the user's selection, and automatically adjusts the beverage discharge temperature to a preset temperature according to the beverage selected by the user. Providing an adjustable coffee maker is expected to improve user convenience.

Description

coffee maker {coffee maker}

The present invention relates to a coffee maker, and more specifically, to a coffee maker equipped with a water purification function that adjusts the amount of water according to the user's preference and automatically adjusts the temperature of the water to a preset appropriate temperature according to the type of beverage. .

As the number of coffee drinkers and coffee consumption increases, the supply of beverage extractors, also called coffee makers or coffee machines, is increasing.

In relation to this, Republic of Korea Patent Publication No. 10-1077204 (announced on October 27, 2011) discloses 'coffee machine', which is a concentrate extractor (10) that extracts coffee concentrate by pressing coffee beans and passing hot water through them. ), a hot water supply means and an additive supply means that heat raw water at room temperature and supply it to the raw water extractor (10).

In addition, Republic of Korea Patent Publication No. 10-1075791 (announced on October 20, 2011) discloses the ‘Operation System of a Capsule Coffee Machine’, which includes a water tank (20), a pump (50), a heater (60), and a coffee machine. It is comprised of an extraction device 30, etc.

The above-described prior art techniques involve extracting coffee by passing hot water generated by heating water with a heater and passing it through coffee powder or coffee capsules. The user must manually adjust the amount of water to adjust the concentration of coffee, which causes inconvenience in use. There was a problem in that it was not possible to accurately set the appropriate temperature of the coffee or adjust the concentration of the coffee to the user's taste. In addition, since sheath heaters or band heaters are typically used as heaters to generate hot water, the initial heating time takes a long time, and temperature control is difficult. For people who are reluctant to drink tap water, water purified from a water purifier is recommended. There was also the inconvenience of having to supply water or bottled water.

Republic of Korea Patent Publication No. 10-1077204 Republic of Korea Patent Publication No. 10-1075791

The present invention is intended to solve the above problems, and is a coffee maker that not only easily adjusts the amount of water according to the user's taste, quickly automatically adjusts the temperature of the water to a preset appropriate temperature according to the type of beverage, but also has a water purification function. The purpose is to provide.

The coffee maker of the present invention has the following features.

A coffee maker that selectively extracts coffee, black tea, and green tea, comprising: a raw water tank (10) that stores and supplies raw water for beverage extraction; A raw water pump (20) that pressurizes the raw water supplied from the raw water tank (10) and supplies it to a water purification filter; A water purification filter (30) that generates purified water by filtering the raw water supplied from the raw water pump (20); A flow sensor 50 that measures the flow rate of purified water filtered through the water purification filter 30; A flow control valve (60) that regulates the flow rate of purified water supplied through the flow sensor (50); An instantaneous hot water module (80) that heats purified water supplied through the flow control valve (60) and supplies it to the coffee holder (100); A coffee holder (100) that extracts a beverage using hot water heated by the instantaneous hot water module (80); A control panel 160 disposed outside the housing of the coffee maker and including operation buttons and a display panel; and disposed on the back of the control panel 160 and connected to the raw water pump 20, flow sensor 50, flow control valve 60, instantaneous hot water module 80, and control panel 160 through wired and wireless communication. A control unit 150 automatically adjusts the beverage discharge amount step by step according to the user's selection by transmitting and receiving a control signal, and automatically adjusts the beverage discharge temperature to a preset temperature according to the beverage selected by the user. .

The instantaneous hot water module 80 is a Rutenox heater with a flow path arranged between two planar heating elements arranged to face each other, and is characterized in that it heats purified water flowing through the flow path in the Rutenox heater by applying a power of 1,270W. do.

The flow path connecting the flow control valve 60 and the instantaneous hot water module 80 is further provided with a check valve 70 to prevent the heated water from flowing back in the instantaneous hot water module 80, and The flow path connecting the module 80 and the coffee holder 100 is further provided with a water outlet flow path switching valve 90, and the water outlet flow path switching valve 90 is an electric three-way valve controlled by the control unit 50. It is characterized by

An air pump 130 is further connected to the flow path branching to one side of the water outlet flow path switching valve 90, and after the beverage is completely dispensed, the coffee holder ( It is characterized by blowing compressed air to remove residual water remaining in the flow path leading to the coffee outlet 110 formed on the lower surface of 100).

An air drain tube 140 is connected to the air pump 130 to discharge residual pressure remaining after removing residual water to the outside.

The raw water tank 10 is composed of a detachable tank, and the upper surface of the raw water tank storage part where the raw water tank 10 is mounted is further provided with a load sensor capable of detecting the weight of the raw water tank 10, The flow path between the water outlet of the tank 10 and the water inlet of the flow sensor 50 is further equipped with a temperature sensor for measuring the temperature of raw water or purified water.

The inside of the coffee holder 100 is further equipped with a capsule detection sensor that detects a capsule or cartridge for beverage extraction, and an outlet extension pipe is added below the coffee outlet 110 formed in the lower part of the coffee holder 100. , the outlet extension pipe has a temperature sensor disposed at the top of the outlet pipe to detect the temperature of the dispensed beverage, and a planar heating element for additionally heating the dispensed beverage when the temperature of the dispensed beverage is lower than the preset temperature. It is characterized in that it is arranged in a cylindrical shape on the inner surface of the extension pipe.

The coffee maker according to the present invention selectively extracts coffee, black tea, and green tea, provides purified water filtered through a water purification filter as water for beverage extraction, and shortens the heating waiting time by applying a Rutenox heater as an instantaneous hot water module. In addition, it is expected that user convenience will be improved by providing a coffee maker that automatically adjusts the beverage dispensing amount step by step according to the user's selection and automatically adjusts the dispensing temperature of the beverage to a preset temperature according to the beverage selected by the user.

Figure 1 is an exploded view showing the flow path configuration of a coffee machine according to the prior art.
Figure 2 is a configuration diagram of a capsule coffee machine according to the prior art.
Figure 3 is a perspective view of the exterior of a coffee maker according to the present invention.
Figure 4 is a partial perspective view showing the housing removed to show the main components of the coffee maker according to the present invention.
Figure 5 is a left partial perspective view showing the housing and raw water tank removed to show the main components of the coffee maker according to the present invention.
Figure 6 is a block diagram showing the main configuration of the coffee maker according to the present invention.
Figure 7 is a plan view showing the configuration of a control panel of a coffee maker according to the present invention.

Hereinafter, a coffee maker according to a preferred embodiment of the present invention will be described in detail.

Below, descriptions of previously known matters are omitted or simplified to clarify the gist of the present invention.

As shown in FIG. 3, the coffee maker of the present invention has a control panel 160 disposed on the upper part of a stand-type housing, a groove is formed in the front center of the housing, and a groove is formed on the bottom surface of the groove to receive coffee being dispensed. A cup holder 120 on which a cup is placed is formed, and a coffee holder 100 for accommodating coffee capsules and extracting coffee by passing hot water is mounted on the upper surface of the groove, and the extracted coffee is placed on the lower side of the coffee holder. A coffee outlet 110 is formed that discharges water to the outside of the coffee holder 100.

And inside the housing, as shown in FIGS. 4 to 6, a raw water tank 10 that stores and supplies raw water for beverage extraction, and the raw water supplied from the raw water tank 10 is pressurized and supplied to a water purification filter. A pump 20, a water purification filter 30 that generates purified water by filtering the raw water supplied from the raw water pump 20, a flow sensor 50 that measures the flow rate of the purified water filtered through the water purification filter 30, A flow control valve 60 that controls the flow rate of purified water supplied through the flow sensor 50, and an instantaneous hot water module that heats the purified water supplied through the flow rate control valve 60 and supplies it to the coffee holder 100. (80) is disposed, and a control unit 150 that controls the operation of each part of the coffee maker is mounted on the back of the control panel 160.

The configuration of the coffee maker of the present invention for each component is as follows.

First, a cover is mounted on the upper surface of the housing, which is on the same plane as the upper surface of the control panel 160, to be openable and closed, and a raw water tank storage portion on which the raw water tank 10 is removably mounted is installed inside the cover. .

As shown in FIG. 4, the raw water tank 10 is a cylindrical container equipped with a raw water inlet equipped with a hinged opening and closing lid on the upper surface, and the raw water stored in the raw water tank 10 is discharged to the outside at the bottom. A water outlet is formed, and an open/close valve is installed at the water outlet to block or allow the raw water stored in the raw water tank 10 to be discharged. In the separated state, the valve body is in close contact with the valve seat due to the elastic force of the coil spring, thereby closing the flow path and blocking the outflow of raw water. When the removable raw water tank 10 is installed in the raw water tank storage part of the coffee maker, the valve body The bottom surface of the rod-shaped valve rod extending vertically downward from the center of the bottom of the coffee maker is pushed upward by the valve opening protrusion installed inside the coffee maker, thereby separating the valve body from the valve seat and opening the flow path to allow raw water to be discharged. It is formed into a structure.

Meanwhile, a load sensor capable of detecting the weight of the raw water tank 10 is disposed on the upper surface of the raw water tank storage part. The load sensor measures the weight of the raw water tank 10 by applying a load cell and transmits the result to the control unit 150 to determine the amount of raw water stored in the raw water tank 10 and informs the user. Provide notification to replenish raw water.

In addition, the raw water discharged from the water outlet of the raw water tank 10 falls by its own weight, is received and pressurized by the raw water pump 20 disposed on the lower side of the raw water tank 10, and is pressurized by the raw water pump 20. Pressurized raw water is supplied to the water purification filter 30 disposed above the raw water pump 20, and the raw water pump 20 uses a diaphragm pump.

As such, the present invention is structured to move and filter raw water to the water purification filter (30) using the pressurized force of the raw water pump (20), so the raw water pump (20) operates only when the user discharges water, so there is no need for a valve to block the supply water pressure. .

The water purification filter 30 is a cylindrical filter whose upper surface is disposed at the same height as the upper surface of the removable raw water tank 10. A raw water inlet is formed in the center of the lower surface, and is arranged concentrically inside the inlet. A water outlet is formed.

And the raw water discharged from the raw water pump 20 flows into the inlet of the water purification filter 30, is filtered through a carbon filter and a hollow fiber membrane filter built in the housing of the water filter 30, and then is filtered through the water purification filter ( Purified water is discharged through the outlet of 30).

A water flow path switching valve 40 may be disposed at the water outlet of the water purification filter 30. The water flow path switching valve 40 is composed of an electric three-way valve and is used to connect the instantaneous hot water module 80 and the coffee holder. (100) Open/close valves arranged in the beverage supply flow path for extracting and supplying beverages such as coffee through a etc., and the purified water supply flow path for supplying purified water in the form of hot water, room temperature water, or cold water through a hot tank or cold tank, etc. By selectively opening, it operates to supply purified water only to the selected flow path. That is, when dispensing beverages such as coffee, open the valve on the beverage supply channel side, close the valve on the purified water supply channel side to supply purified water only to the beverage supply channel, and when dispensing purified water, open the valve on the purified water supply channel side. , close the valve on the beverage supply channel side to supply purified water only to the purified water supply channel.

However, the water flow path switching valve 40 is required only when using both a coffee maker and a water purifier, and is not an essential component when used exclusively for a coffee maker, so it may be omitted.

Meanwhile, a temperature sensor that measures the temperature of raw water or purified water is disposed in the passage between the water outlet of the raw water tank 10 and the water outlet of the water flow path switching valve 40.

The purified water that has passed through the water flow path switching valve 40 passes through the flow sensor 50, measures the amount of purified water, and then moves to the flow control valve 60. The flow control valve 60 is controlled by the temperature sensor. The opening amount of the valve is adjusted according to the detected raw or purified water temperature and the type and concentration of the selected beverage (amount of water from the coffee outlet). At this time, considering that the coffee maker of the present invention is usually installed indoors, the temperature of the purified water can be assumed to be 25°C and used to adjust the opening amount of the valve.

Purified water whose quantity is adjusted while passing through the flow control valve 60 is supplied to the instantaneous hot water module 80 and heated while passing through the instantaneous hot water module 80. The flow control valve 60 and the instantaneous hot water module ( A check valve (70) is installed in the flow path between 80) to prevent the hot water heated in the instantaneous hot water module (80) from flowing back.

The instantaneous hot water module 80 is a heating module using a Ruthenox heater, and a flow path is arranged between two rectangular planar heating elements arranged to face each other, and is installed at the lower corner of any one of the two rectangular planar heating elements. The water intake pipe is connected, and the water outlet pipe is connected to a position diagonally opposite to the connection position of the water intake pipe. By applying power of 1,270W to generate heat, the purified water flowing through the flow path in the Rutenox heater is instantaneously heated. Hot water heated to a predetermined target temperature is supplied, and a temperature sensor that detects the water temperature is placed in the flow path within the Rutenox heater.

The hot water discharged from the instantaneous hot water module 80 is supplied to the coffee holder 100 through the water outlet flow path switching valve 90, and the coffee holder 100 contains coffee, black tea, or green tea within the path through which the hot water passes. It is configured to accommodate a beverage capsule or cartridge to extract beverages such as coffee, and the inside of the coffee holder 100 may further include a capsule detection sensor capable of detecting the capsule or cartridge for beverage extraction, A coffee outlet 110 through which beverages such as coffee are dispensed is formed in the lower part.

In addition, a water outlet extension pipe may be additionally disposed below the coffee outlet 110, and a temperature sensor that detects the temperature of the beverage being dispensed may be placed at the top of the outlet extension pipe, When the temperature is lower than the predetermined temperature, a planar heating element for additional heating of the beverage being dispensed may be disposed in a cylindrical shape on the inner surface of the outlet extension pipe.

Meanwhile, the water outlet flow path switching valve 90 is an electric three-way valve connected to a flow path through which hot water is received from the instantaneous hot water module 80, a flow path through which hot water is discharged to the coffee holder 100, and an air supply flow path, respectively. , the air supply passage is connected to the air pump 130, and discharges the compressed air supplied from the air pump 130 into the passage on the coffee holder 100 side to the discharge passage after beverages such as coffee are finished dispensing. By removing moisture remaining inside the switching valve 90 and the coffee holder 100, dripping of residual water from the coffee outlet 110 after dispensing the beverage is minimized.

Additionally, an air drain tube 140 is connected to the air pump 130 to discharge the remaining pressure to the outside even after all operations are completed.

In addition, a cup holder 120 on which a cup containing a beverage is placed is formed directly below the coffee outlet 110, and a cup holder 120 is positioned at a predetermined distance from the upper surface of the cup holder 120. A cup detection sensor 121 that detects the placed cup is attached, and the cup detection sensor 121 may be a photo sensor consisting of a light emitting part and a light receiving part.

And, as shown in FIG. 7, the control panel 160 includes a beverage selection button 161 through which the user inputs an operation command, and a beverage indicator light 162 that displays the beverage selected by the beverage selection button 161. , a discharge amount control button 163 that controls the amount of beverage to be extracted, and a discharge amount indicator light 164 that displays the discharge amount of the beverage selected according to the operation of the discharge amount control button 163.

The beverage selection button 161 is composed of coffee, tea, and green tea buttons to allow the user to select one, and the discharge amount control button 163 is the first level with the lowest discharge amount. It is composed of 7 stages with the highest amount of water discharged so that it can be adjusted according to the user's preference, but is not limited to this and can be configured to adjust the amount of water discharged to at least 3 stages.

In addition, the control panel 160 may further include a display panel such as an LED panel and a speaker to notify the user of necessary matters such as precautions.

Meanwhile, the control unit 150 is comprised of an MPU (micro processor unit), a communication unit, and a memory, and includes the raw water pump 20, the water flow path switching valve 40, the flow sensor 50, and the flow control valve 60. , the instantaneous hot water module (80), water flow path switching valve (90), air pump (130), control panel (160), and other various sensors are connected through wired and wireless communication to control the operation of the coffee maker by transmitting and receiving control signals. .

The control unit 150 controls each part of the coffee maker using the following basic settings stored in memory.

Beverages that can be extracted in the coffee maker of the present invention are coffee, black tea, and green tea. The coffee is capsule coffee and regular coffee, and the regular coffee is extracted from coffee powder using a disposable filter accommodated in the coffee holder 100. It means coffee.

The dispensing amount for each beverage is set the same regardless of the type of beverage. The dispensing amount is set in 7 levels from a minimum of 70 ml to a maximum of 200 ml so that the user can select it, but is not limited to this and drinks can be adjusted according to the user's taste. The amount of water can be set differently from 3 to 7 levels, and the amount and method of beverages at each stage are shown in <Table 1> and <Table 2>.

<Table 1> Coffee extraction quantity and extraction method

division water output Order (water extraction method) water out OFF water out OFF water out OFF water out capsule coffee Level 1 70ml 10㎖ 3 seconds 60ml Step 2 100 ml 10㎖ 3 seconds 90㎖ Step 3 120 ml 10㎖ 3 seconds 110㎖ Step 4 140 ml 10㎖ 3 seconds 130ml Step 5 160ml 10㎖ 3 seconds 150ml Step 6 180 ml 10㎖ 3 seconds 170㎖ Step 7 200 ml 10㎖ 3 seconds 190㎖ regular
coffee Level 1 70ml 10㎖ 3 seconds 20㎖ 2 seconds 20㎖ 2 seconds 20㎖ Step 2 100 ml 10㎖ 3 seconds 30㎖ 2 seconds 30㎖ 2 seconds 30㎖ Step 3 120 ml 10㎖ 3 seconds 36ml 2 seconds 36ml 2 seconds 36ml Step 4 140 ml 10㎖ 3 seconds 43㎖ 2 seconds 43㎖ 2 seconds 43㎖ Step 5 160ml 10㎖ 3 seconds 50㎖ 2 seconds 50㎖ 2 seconds 50㎖ Step 6 180 ml 10㎖ 3 seconds 56㎖ 2 seconds 56㎖ 2 seconds 56㎖ Step 7 200 ml 10㎖ 3 seconds 63㎖ 2 seconds 63㎖ 2 seconds 63㎖

<Table 2> Dispensing amount and method of black tea and green tea

division water output Order (water extraction method) water out OFF water out black tea Level 1 70ml 10㎖ 3 seconds 60ml Step 2 100 ml 10㎖ 3 seconds 90㎖ Step 3 120 ml 10㎖ 3 seconds 110㎖ Step 4 140 ml 10㎖ 3 seconds 130ml Step 5 160ml 10㎖ 3 seconds 150ml Step 6 180 ml 10㎖ 3 seconds 170㎖ Step 7 200 ml 10㎖ 3 seconds 190㎖ green tea Level 1 70ml 10㎖ 3 seconds 60ml Step 2 100 ml 10㎖ 3 seconds 90㎖ Step 3 120 ml 10㎖ 3 seconds 110㎖ Step 4 140 ml 10㎖ 3 seconds 130ml Step 5 160ml 10㎖ 3 seconds 150ml Step 6 180 ml 10㎖ 3 seconds 170㎖ Step 7 200 ml 10㎖ 3 seconds 190㎖

Meanwhile, in the 'water extraction method' in the table above, turning the water extraction 'off' in the middle of extraction is to prevent the powder for beverage extraction from coagulating with hot water, resulting in poor extraction of the beverage, especially in the case of regular coffee. Since coffee powder easily coagulates, the hot water supplied to the coffee powder must be interrupted by stopping the water extraction twice or more to ensure smooth extraction of coffee.

The temperature of the beverage discharged from the coffee outlet 110 is set as the target temperature of 81 to 85 ℃ for capsule coffee and regular coffee, 83 to 87 ℃ for black tea, and 72 to 77 ℃ for green tea, regardless of the amount of discharge for each stage. The opening amount of the temperature and flow control valve of the hot water module 80 is set as shown in <Table 3> and <Table 4>.

<Table 3> Target temperature and flow control valve control of instantaneous hot water module when extracting coffee

division target temperature Control when target temperature is reached Flow control valve opening amount (angle) capsule coffee mode 1 Level 1 92℃ 50% 135° Step 2 92℃ 50% 141° Step 3 92℃ 50% 141° Step 4 92℃ 50% 141° Step 5 92℃ 50% 141° Step 6 92℃ 50% 141° Step 7 92℃ 50% 141° mode 2 Level 1 103℃ 90% 119° Step 2 98℃ 90% 130° Step 3 98℃ 90% 135° Step 4 94℃ 90% 141° Step 5 94℃ 90% 141° Step 6 94℃ 90% 141° Step 7 94℃ 90% 141° regular coffee mode 1 Level 1 94℃ 50% 119° Step 2 94℃ 50% 144° Step 3 93℃ 50% 144° Step 4 93℃ 50% 144° Step 5 93℃ 50% 144° Step 6 93℃ 50% 144° Step 7 93℃ 50% 144° mode 2 Level 1 103℃ 90% 119° Step 2 98℃ 90% 130° Step 3 98℃ 90% 141° Step 4 94℃ 90% 141° Step 5 94℃ 90% 141° Step 6 94℃ 90% 141° Step 7 94℃ 90% 141°

<Table 4> Control of target temperature and flow control valve of instantaneous hot water module when extracting black tea and green tea

division target temperature Control when target temperature is reached Flow control valve opening amount (angle) black tea mode 1 Level 1 95℃ 55% 141° Step 2 95℃ 55% 147° Step 3 95℃ 55% 147° Step 4 95℃ 55% 147° Step 5 95℃ 55% 147° Step 6 95℃ 55% 147° Step 7 95℃ 55% 147° mode 2 Level 1 103℃ 90% 119° Step 2 100℃ 90% 124° Step 3 97℃ 90% 135° Step 4 97℃ 90% 141° Step 5 97℃ 90% 141° Step 6 97℃ 90% 141° Step 7 97℃ 90% 141° green tea mode 1 Level 1 86℃ 25% 144° Step 2 85℃ 25% 144° Step 3 85℃ 25% 152° Step 4 85℃ 25% 152° Step 5 85℃ 25% 152° Step 6 85℃ 25% 152° Step 7 85℃ 25% 152° mode 2 Level 1 86℃ 55% 144° Step 2 85℃ 55% 144° Step 3 85℃ 55% 147° Step 4 85℃ 55% 147° Step 5 85℃ 55% 147° Step 6 85℃ 55% 147° Step 7 85℃ 55% 147°

At this time, in the 'mode' of <Table 3> and <Table 4>, the temperature of the hot water in the instantaneous hot water module 80, which was heated to the target temperature when extracting the previous beverage, decreases over time, and the beverage selection button (161) When inputting, if the temperature within the instantaneous hot water module is above 60℃, it is set to 'Mode 1', and if it is below 60℃, it is set to 'Mode 2' and the target temperature is set differently.

In addition, the 'control when reaching the target temperature' refers to the ratio of heating time to continuously maintain the target temperature by heating newly incoming purified water as the temperature in the instantaneous hot water module 80 reaches the target temperature and water is discharged. it means. In other words, the energization time for the planar heating element of the Rutenox heater, which is the instantaneous hot water module 80, is controlled at the ratio described in 'Control upon reaching the target temperature' in <Table 3> and <Table 4>, and the energization time The current is applied by dividing it into units of 10 ms (milliseconds), and 50% means applying electricity for 50% of the total operating time of the Rutenox heater by repeating the process of applying 10 ms and stopping 10 ms.

Initially, when the beverage selection button 161 is selected and entered, the hot water existing in the flow path within the Rutenox heater is heated and supplied to the target temperature within a short period of time. Afterwards, the newly supplied room temperature purified water is heated by the Rutenox heater. By controlling the opening amount of the flow control valve 60 and the energization time of the Rutenox heater in consideration of the capacity and the amount of water discharged from the coffee outlet 110, hot water of the target temperature and quantity is continuously supplied.

Such a coffee maker is controlled and operated as follows.

(1) The initial preparation settings of the coffee maker proceed as follows.

① Turn on the power to the coffee maker and perform the initial water supply.

- If you press one of the three beverage selection buttons (161) for more than 3 seconds while the initial water supply is not in effect, the message ‘Warning of omission of initial water supply mode execution’ is displayed.

② When the initial water supply is completed, press one of the three beverage selection buttons 161 for more than 3 seconds as shown in FIG. 7(a).

③ As shown in Figure 7(b), the three beverage indicator lights blink in red at the same time and the initial preparation setting of the instantaneous hot water module is in progress.

- At this time, the operation of the raw water pump (20), the water flow path switching valve (40), and the flow rate control valve (60) are 'ON', and 130 cc is discharged from the raw water pump (20), and the coffee outlet (110) From there, less than 40 cc of water is discharged and stored in a water pan (not shown) on the lower side of the cup holder (120), and the remainder remains in the flow path inside the coffee maker including the instantaneous hot water module (80).

④ When the initial preparation settings of the instantaneous hot water module are completed, as shown in Figure 7(c), all three beverage indicator lights and stage 1 to 7 water discharge indicator lights light up in green.

- When the 130 cc of water is completely discharged from the raw water pump (20), the operation of the raw water pump (20), the water flow path switching valve (40), and the flow control valve (60) are ‘off’.

(2) The beverage dispensing of the coffee maker is controlled and operated as follows.

① Select the desired level of water (output amount) from steps 1 to 7 using the ‘+’ and ‘-’ buttons of the outlet amount control button (163).

- At this time, all LEDs corresponding to the selected level and lower levels of the water output indicator light 164 light up in green.

② To select a beverage such as capsule coffee, black tea, or green tea, press the corresponding beverage button among the three beverage selection buttons (161) for more than 3 seconds. However, regular coffee is selected by pressing the UNLOCK BUTTON for 2 seconds and the UNLOCK LED lights up in orange, then pressing the ‘coffee button’ among the three beverage selection buttons (161) for more than 3 seconds.

- At this time, the control unit 150 checks whether the raw water stored in the raw water tank 10 is insufficient through the load sensor, and beverage capsules or cartridges such as coffee capsules are stored in the coffee holder 100 through the capsule detection sensor. Check whether the cup for receiving the extracted beverage is placed in the cup holder 120 through the cup detection sensor 121. If the above checks are not met, the result is displayed on the display panel and a warning sound is heard. The action that occurs can be executed.

③ When a beverage is selected, as shown in FIG. 7(d), only the water dispensing quantity indicator light indicating the selected water amount (dispensing quantity) and the beverage indicator lamp for the selected beverage blink in green, and the dispensing of the beverage progresses. During the dispensing operation, the dispensing quantity indicator light The LED decreases step by step according to the amount of water being discharged.

- At this time, the operation of the raw water pump (20), the inlet flow path switching valve (40), and the flow rate control valve (60) are 'on', and one second later, the operation of the instantaneous hot water module (80) and the outlet water flow path switching valve (90) is turned on. It becomes ‘on’.

- In addition, during the beverage dispensing operation, while the water discharged to the coffee outlet 110 is 'off', the operation of the raw water pump 20 and the air pump 130 is 'off', and the water flow path switching valve 40 and the flow control valve are (60), the instantaneous hot water module (80), and the water outlet flow switch valve (90) maintain the 'on' state.

④ When the dispensing is completed, all three beverage indicator lights 162 and the dispensing quantity indicator lamp 164 light up in green, and if there is no separate button input for 5 minutes, they turn off.

- When water discharge is completed, the operation of the raw water pump (20) and the instantaneous hot water module (80) are immediately 'off', and the operation of the water flow path switching valve (40) and the flow control valve (60) are 'off' after 12 seconds. The operation of the water outlet flow path switching valve 90 is 'on' to be connected to the air pump 130, and the air pump 130 is 'on' after 7 seconds and operates for 5 seconds to connect the water outlet flow path switching valve 90 and Remove residual water from the flow path around the coffee outlet (110).

⑤ When any one of the three beverage selection buttons (161) is pressed for more than 3 seconds while the beverage indicator light (162) and the discharge quantity indicator light (164) are turned off, the three beverage indicator lights (162) and the previously selected quantity indicator light are displayed. The stage of light 164 lights green to indicate that it is ready to perform beverage extraction.

⑥ If any one of the three beverage selection buttons (161) is pressed for more than 3 seconds when there has been no beverage dispensing command for 24 hours, the three beverage indicator lights (162) flash in red at the same time, and 40 cc of purified water is drained. When completed, the three beverage indicator lights 162 and the discharge quantity indicator light 164 of the previously selected stage light up in green.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

10; raw water tank, 20; raw water pump, 30; water filter, 40; Water flow path switching valve, 50; flow sensor, 60; flow control valve, 70; check valve, 80; Instantaneous hot water module, 90; Outlet flow path switching valve, 100; coffee holder, 110; coffee spout, 120; coaster, 121; Cup detection sensor, 130; air pump, 140; Air drain tube, 150; control unit, 160; control panel, 161; Beverage selection button, 162; beverage indicator light, 163; Output volume control button, 164; Water output indicator light

Claims (7)

A coffee maker with a water purifier function that selectively extracts coffee, black tea, and green tea.
The coffee maker includes a raw water tank (10), a raw water pump (20), a water purification filter (30), a water flow path switching valve (40), a flow sensor (50), a flow control valve (60), Arranged in the following order: check valve (70), instantaneous hot water module (80), water outlet flow switch valve (90), coffee holder (100), and coffee outlet (110),
The raw water tank (10) for storing and supplying raw water for beverage extraction;
The raw water pump (20) pressurizes the raw water supplied from the raw water tank (10) and supplies it to a water purification filter;
The water purification filter 30 generates purified water by filtering the raw water supplied from the raw water pump 20;
The water flow path switching valve (40) consisting of a three-way valve that supplies purified water supplied from the water purification filter (30) to a beverage supply flow path and a purified water supply flow path;
A flow sensor (50) that measures the flow rate of purified water filtered through the water flow path switching valve (40);
The flow rate control valve 60, which controls the flow rate of purified water supplied through the flow sensor 50;
The instantaneous hot water module (80) that heats purified water supplied through the flow control valve (60) and supplies it to the coffee holder (100);
The coffee holder (100) extracts a beverage using hot water heated by the instantaneous hot water module (80);
A control panel 160 disposed outside the housing of the coffee maker and including operation buttons and a display panel; and
It is disposed on the back side of the control panel 160, and includes the raw water pump 20, the water flow path switching valve 40, the flow sensor 50, the flow control valve 60, and the instantaneous hot water module 80. , It is connected to the control panel 160 through wired and wireless communication and transmits and receives control signals to automatically adjust the beverage discharge amount in stages according to the user's selection, and automatically adjusts the beverage discharge temperature to a preset temperature according to the beverage selected by the user. Includes a control unit 150,
The instantaneous hot water module 80 is a Rutenox heater with a flow path arranged between two planar heating elements arranged to face each other,
The flow path connecting the instantaneous hot water module 80 and the coffee holder 100 is further provided with the water outlet flow path switching valve 90,
The water outlet flow path switching valve 90 is an electric three-way valve connected to a flow path through which hot water is received from the instantaneous hot water module 80, a flow path through which hot water is discharged to the coffee holder 100, and an air supply flow path,
An air pump 130 is further connected to the flow path branching to one side of the water outlet flow path switching valve 90, and after the beverage is completely dispensed, the coffee holder ( A coffee maker, characterized in that it blows out compressed air to remove residual water remaining in the flow path leading to the coffee outlet (110) formed on the lower surface of (100). According to paragraph 1,
The instantaneous hot water module (80) is a coffee maker characterized in that it heats purified water flowing in the flow path in the Rutenox heater by applying a power of 1,270W. According to paragraph 1,
The flow path connecting the flow control valve 60 and the instantaneous hot water module 80 is further provided with a check valve 70 to prevent the heated water from flowing back from the instantaneous hot water module 80,
A coffee maker, characterized in that the water outlet flow path switching valve (90) is controlled by the control unit (150). delete According to paragraph 1,
A coffee maker, characterized in that an air drain tube 140 is connected to the air pump 130 to discharge residual pressure remaining after removing residual water to the outside. According to paragraph 1,
The raw water tank 10 is composed of a removable tank,
The upper surface of the raw water tank storage unit where the raw water tank 10 is mounted is further provided with a load sensor capable of detecting the weight of the raw water tank 10,
A coffee maker, characterized in that a temperature sensor for measuring the temperature of raw water or purified water is further provided in the flow path between the water outlet of the raw water tank (10) and the water inlet of the flow sensor (50). According to paragraph 1,
The coffee holder 100 is further equipped with a capsule detection sensor inside the coffee holder 100 to detect a capsule or cartridge for extracting a beverage,
A water outlet extension pipe is added below the coffee outlet 110 formed in the lower part of the coffee holder 100,
The outlet extension pipe has a temperature sensor that detects the temperature of the dispensed beverage disposed at the top, and a planar heating element for additionally heating the dispensed beverage when the temperature of the dispensed beverage is lower than the preset temperature extends the outlet. A coffee maker, characterized in that it is arranged in a cylindrical shape on the inner surface of a pipe.