KR-102965354-B1 - Drip mimicking coffee brewing apparatus with 2-axis driving structure and precise temperature control means

KR102965354B1KR 102965354 B1KR102965354 B1KR 102965354B1KR-102965354-B1

Abstract

The present invention relates to a hand-drip simulating coffee extraction device having a two-axis drive unit and a precise temperature control means, and a method of operating the same. More specifically, the invention relates to a hand-drip simulating coffee extraction device comprising: a water supply line installed in a main body case for supplying water; a coffee dripper tray installed in the main body case for mounting a coffee dripper; a water dispensing head positioned above the coffee dripper for supplying hot water into the coffee dripper; and a water dispensing head moving means for moving the water dispensing head to adjust the supply pattern of hot water falling from the water dispensing head into the coffee dripper in various ways, wherein the device comprises: a water pump for supplying the water supply to the water dispensing head side; and a primary heating means for primary heating the water supply supplied by the water pump. The present invention relates to a hand dripping simulation coffee extraction device having a two-axis drive device and a precise temperature control means, characterized by including: a primary heating means and a secondary heating means provided between the primary heating means and the water outlet head to heat the primary heated water supply to a set target hot water temperature.

Inventors

김완진
이상욱

Assignees

국립한밭대학교 산학협력단

Dates

Publication Date: 20260513
Application Date: 20240418

Claims (17)

A hand dripping-mimicking coffee extraction device comprising: a water supply line installed in a main body case to supply water; a coffee dripper tray installed in the main body case to support a coffee dripper; a water dispensing head positioned above the coffee dripper to supply hot water into the coffee dripper; and a water dispensing head moving means for moving the water dispensing head to adjust the supply pattern of hot water falling from the water dispensing head into the coffee dripper. A water pump for supplying the above water supply to the above water outlet head side; A primary heating means for primary heating the water supplied by the above water pump; and A secondary heating means provided between the primary heating means and the water outlet head to heat the primary heated water to a set target hot water temperature; and A control unit that controls the supply of purified water at a set flow rate and flow velocity through the above water pump; and Includes a stopper positioned before or after the above-mentioned water pump; and The above control unit controls the above primary heating means to adjust the water so that it becomes within the primary heating set temperature range, and The above water pump is located on the front or rear side of the above secondary heating means , and The above secondary heating means has an inlet, a heating element, and an outlet, has a heat dissipation structure between the inlet and the heating element, and includes a temperature sensor in each of the inlet and the outlet. It includes a pattern setting unit for setting pattern data regarding a handling pattern, flow rate, number of water pours, and movement speed, and the control unit controls the water outlet head moving means, water pump, and secondary heating means based on the pattern data , and The above control unit controls the stopper to maintain the temperature of the hot water in the pipe at the primary heating temperature by continuing the heating of the water pump and the primary heating means even during periods when water is not discharged, or controls the stopping and continuing of water discharge between the secondary heating means and the discharge head through the stopper, thereby maintaining the temperature of the hot water in the pipe at the final target temperature by continuing water pumping and the heating of the primary heating means and the secondary heating means even during periods when water is not discharged . A hand drip simulating coffee extraction device having a two-axis drive unit and a precise temperature control means, characterized in that the above-mentioned control unit controls the operation of a water pump to stop water discharge from the discharge head by operating a stopper immediately before or immediately after operation to prevent purified water remaining in the primary heating means or the primary and secondary heating means from escaping to the inlet side.
delete
delete
delete
In Article 1, The above-mentioned water outlet head moving means is provided on the upper frame of the main body case, and An X-axis stage and an X-axis driving unit for moving the water outlet head in the X-axis direction on the X-axis stage; and A hand drip simulating coffee extraction device having a 2-axis drive unit and a precise temperature control means, characterized by including a Y-axis stage located at each end of the X-axis stage and a Y-axis drive unit that moves the X-axis stage in the Y-axis direction.
delete
delete
delete
delete
delete
delete
A method of operating a hand-drip simulating coffee extraction device using a hand-drip simulating coffee extraction device having a two-axis driving device and a precise temperature control means according to claim 1, A step in which the above-mentioned water supply is supplied to the above-mentioned water outlet head side through a water pump; A step of heating the water supplied by the water pump by a primary heating means so that it reaches a primary heating range; A step of heating the first heated supply water to a target hot water temperature set by a second heating means provided between the first heating means and the water outlet head; and A method of operation of a hand dripping simulation coffee extraction device having a 2-axis drive device and a precise temperature control means, characterized by including the step of moving the water discharge head using a water discharge head moving means to vary the drip pattern of hot water falling from the water discharge head into the coffee dripper, and dripping at a set target hot water temperature.
In Paragraph 12, A method of operation of a hand drip simulating coffee extraction device having a two-axis drive device and a precise temperature control means, characterized in that the control unit controls the supply of purified water at a set flow rate and flow velocity through the water pump, controls the primary heating means to adjust the purified water to a primary heating set temperature range, and controls the secondary heating means to discharge water at a set target hot water temperature.
In Paragraph 13, It includes a stopper positioned before or after the above-mentioned water pump, and A method of operation of a hand dripping-mimicking coffee extraction device having a two-axis drive unit and a precision temperature control means, characterized by further including the step of the above-mentioned control unit controlling the stopper to maintain the temperature of the hot water inside the pipe at the primary heating temperature by continuing the heating of the water pump and the primary heating means even during periods when water is not discharged.
In Paragraph 13, A method of operation of a hand drip simulating coffee extraction device having a two-axis drive device and a precise temperature control means, characterized by further including the step of the control unit controlling the stopping and continuing of water discharge between the secondary heating means and the water discharge head through the stopper, thereby maintaining the temperature of the hot water inside the pipe at the final target temperature by continuing water pumping and heating of the primary heating means and the secondary heating means even during the period when water is not discharged.
In Paragraph 13, The above stopper is positioned before or after the water pump, and A method of operating a hand drip simulating coffee extraction device having a two-axis drive unit and a precise temperature control means, characterized by further including the step of the above-mentioned control unit controlling the operation of a stopper immediately before or immediately after operation to prevent purified water remaining in the primary heating means or the primary and secondary heating means from escaping to the inlet side when the operation of the water pump is stopped to stop water discharge from the discharge head.
In Paragraph 13, A step of setting pattern data for a handling pattern, flow rate, number of pouring cycles, and movement speed through a pattern setting unit; and A method of operating a hand dripping-mimicking coffee extraction device having a two-axis drive unit and a precise temperature control means, characterized by further including the step of the control unit controlling the water outlet head moving means, the water pump, and the secondary heating means based on the pattern data.

Description

Hand drip mimicking coffee brewing apparatus with 2-axis driving structure and precise temperature control means and method of operation The present invention relates to a hand-drip simulating coffee extraction device and a method of operation having a low-cost 2-axis drive unit and a precise temperature control means. Espresso coffee, which is typically served at coffee shops, has the advantage of being able to provide a large amount of coffee in a short time by extracting it quickly using pressure. Due to these characteristics, espresso coffee has enabled the popularization of whole bean coffee, and most coffee shops offer coffee beverages based on this espresso coffee. However, since espresso coffee is usually extracted using high-pressure steam of 9 atmospheres or more, it has the disadvantage of extracting undesirable components of the beans along with the coffee and having an overly strong bitter taste. Recently, there has been a trend among people who want to enjoy a smoother and milder-tasting coffee to switch to hand drip coffee or water drip coffee (Dutch coffee). Hand drip is a method of extraction that utilizes gravity by slowly pouring hot water over ground coffee beans, allowing for the production of coffee with a deeper and smoother flavor and aroma compared to espresso. Additionally, it offers the advantage of extracting coffee with a variety of flavors and aromas, as users can freely adjust the water temperature, volume, stream thickness, pouring time, intervals, and trajectory. However, because the hand drip method requires the user to pour the water manually, the process is cumbersome and time-consuming, making it difficult to popularize. Recently, some specialty coffee shops have been attempting to have baristas brew and serve hand drip coffee, but it remains difficult to replace espresso in terms of preparation time and cost. In a coffee maker, ground coffee is placed inside a filter, such as drip paper, which is installed in the hopper. Then, boiling water is poured into a tank that supplies it to the hopper. The boiled water is then supplied to the ground coffee in the filter, allowing the coffee to steep and be stored in the kettle located at the bottom of the maker. A heater is installed at the bottom of the kettle to maintain the coffee at a constant temperature. For example, a conventional automatic coffee drip device described in domestic registration number 10-1468906 comprises a dripper tray module fixed to one side of the exterior of a housing and having a dripper containing coffee powder seated thereon, a drip head module provided at a predetermined distance above the dripper tray module to spray water onto the dripper, and a boiler module provided inside the housing and connected to the drip head module to supply heated water to the drip head module. However, conventional automatic coffee drip devices have a limitation in that they cannot freely move the drip nozzle, making it impossible to vary the supply pattern of hot water falling from the drip nozzle into the coffee dripper. Therefore, there is a need for a coffee drip device that allows the supply pattern of hot water falling from the drip nozzle into the coffee dripper to be varied by freely moving the drip nozzle, and enables the extraction of coffee in various ways depending on the condition of the coffee beans and the user's preference. Hand-drip coffee had not been able to gain widespread popularity because it is difficult to brew coffee of a certain quality without a skilled barista. However, recently, there has been a growing trend, centered around famous franchise coffee shops, of establishments where skilled baristas serve hand-drip coffee. The demand for hand-drip coffee is expected to increase further in the future. Ideas for automated machines for brewing hand-drip coffee are also being increasingly disclosed, and Korean Registered Patent Publication No. 10-1934343 discloses one example. This patent discloses a hand-drip coffee brewing device comprising a device for supplying hot water for brewing coffee, a head unit for supplying hot water to a drip device, a rotating plate for rotating the drip device, and a conveying device for horizontally transporting a hot water nozzle. The device is configured so that the user can brew coffee by placing a drip server and a dripper on the rotating plate; however, if the central axes of the rotating plate, drip server, and dripper do not align, there is a problem in that the hot water drop point deviates from the correct position. In conventional hand drip coffee brewing devices, the dripper containing ground coffee beans and the drip server containing extracted coffee are placed on a rotating plate and rotate, while a hot water nozzle moves horizontally over them to drop hot water, thereby extracting the coffee. If the central axis of the dripper or drip server is misaligned with the central axis of the rotating plate, the trajectory of the hot water falling onto the