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KR-20260065311-A - Coffee extraction method that allows coffee extraction by area of the group head

KR20260065311AKR 20260065311 AKR20260065311 AKR 20260065311AKR-20260065311-A

Abstract

The present invention relates to a coffee extraction method capable of extracting coffee by region of a brew group or group head for extracting coffee, and more specifically, to a method of dividing a coffee group head into at least two regions and extracting coffee by individually controlling the extraction pressure, extraction flow rate, extraction temperature, and extraction time of the coffee extraction water for each region. A coffee extraction method capable of extracting coffee by region using a brew group or group head proposed in the present invention for this purpose comprises: a step of dividing coffee containing a portafilter into at least two regions and loading or generating a multi-stage coffee extraction profile that individually controls at least one of the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water for each divided region; and a step of setting the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water for each region according to the loaded or generated multi-stage coffee extraction profile, and extracting coffee for each region according to the set extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water.

Inventors

  • 박재현

Assignees

  • 박재현

Dates

Publication Date
20260508
Application Date
20241101

Claims (9)

  1. A step of dividing coffee containing a portafilter into at least two regions and loading or generating a multi-stage coffee extraction profile that individually controls at least one of the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water for each divided region; and A coffee extraction method capable of area-specific coffee extraction of a group head, characterized by including the step of setting the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water for each area according to a multi-stage coffee extraction profile that is loaded or created, and extracting coffee for each area according to the set extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water.
  2. A coffee extraction method capable of area-specific coffee extraction of a group head, characterized in that, in claim 1, the portafilter refers to a container for holding coffee beans for coffee extraction of a semi-automatic machine and a container for holding coffee beans for coffee extraction of a fully automatic machine.
  3. In Clause 1, the step of extracting coffee for each area is, A coffee extraction method capable of extracting coffee in each area of a group head, characterized in that an extraction water pipe for supplying coffee extraction water to each area for coffee extraction is formed in the group head, and at least one of the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the extraction water supplied to each extraction water pipe is varied.
  4. A coffee extraction method capable of regional coffee extraction of a group head, characterized in that, in claim 3, the coffee extraction water supplied from the extraction water pipe is supplied differently, connected to a single pump, and the extraction flow rate of the coffee extraction water supplied to the extraction water pipe formed for each region is different.
  5. A coffee extraction method capable of region-specific coffee extraction of a group head, wherein, in claim 3, the coffee extraction water supplied from the extraction water pipe is supplied differently, a pump corresponding to the extraction water pipe is formed, and at least one of the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water supplied from each pump is varied.
  6. In claim 1, the multi-stage coffee extraction profile is, A coffee extraction method capable of regional coffee extraction of a group head, characterized in that at least one of the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water is varied for each region.
  7. A coffee extraction method capable of regional coffee extraction of a group head, characterized in that, in claim 6, the extraction temperature is controlled using a temperature control device formed in the extraction water pipe.
  8. A coffee extraction method capable of regional coffee extraction of a group head, characterized in that, in claim 1, the portafilter has a partition formed therein and the coffee contained in the portafilter is divided by the formed partition.
  9. In claim 1, the step of setting the extraction pressure, extraction flow rate, extraction time, and extraction temperature of the coffee extraction water for each area is: A coffee extraction method capable of area-specific coffee extraction of a group head, characterized by setting an extraction maintenance pressure to prevent backflow of extraction water from other areas while not performing extraction when coffee extraction is finished in a specific area.

Description

Coffee extraction method that allows coffee extraction by area of the group head The present invention relates to a coffee extraction method capable of extracting coffee by region of a brew group or group head for extracting coffee, and more specifically, to a method of dividing a coffee group head into at least two regions and extracting coffee by individually controlling the extraction pressure, extraction flow rate, extraction temperature, and extraction time of the coffee extraction water for each region. Due to the recent significant increase in home cafe coffee enthusiasts, more and more people are brewing coffee at home using coffee machines or making it themselves via the hand-drip method. Current coffee machines and extraction methods were largely perfected by Luigi Bezzera of Italy in 1901 and Achile Gaggia in 1938. Luigi Bezzera initiated espresso by utilizing steam pressure to extract coffee in about 60 seconds at a high temperature of 100°C and a low pressure of 1.2 to 1.5 bar, which was faster than the extraction time of the time at the time. Prior to this, coffee was brewed like herbal medicine and squeezed out to drink, or brewed by putting water and coffee beans in a kettle and boiling them; the invention of the espresso machine was a revolutionary improvement on these methods. Subsequently, in 1938, Achile Gaggia utilized steam pressure and a spring, adding spring pressure to the 1 bar steam pressure that had previously been used alone Modern espresso machines that extract at 9 bar have emerged. Current coffee extraction methods have already been standardized through extensive trial and error. Typically, a single shot uses 17 to 18g of coffee grounds at 9 bar with an extraction time of 25 to 27 seconds, while a two-shot standard uses 20 to 22g at 9 bar with an extraction time of 30 to 35 seconds. Of course, variable pressure machines that adjust pressure rather than maintaining a fixed 9 bar, as well as manual lever machines, are also widely used. Although these extraction times, pressures, and temperatures have been quantified through numerous trials, some machines have introduced extraction methods utilizing only high pressure at room temperature between 18°C and 35°C instead of 95°C. Many scientists studying coffee suggest that the traditional 9 bar pressure was fixed due to the spring pressure of the time, and that extracting at 6 bar actually produces tastier coffee. Furthermore, it has recently become common practice to express extraction volume in grams (g) rather than milliliters (ml), as the specific gravity of water is very close to 1. Figure 1 illustrates the portafilter of a coffee machine, the diffuser of the group head, and the shower screen. Figure 2 illustrates a method of extracting at the same pressure, temperature, flow rate, and time using a single extraction tube in a semi-automatic coffee machine. Figure 3 illustrates a method of extraction using a single extraction tube and a single coffee portafilter in a current coffee machine. Figure 4 illustrates an example of extracting by dividing a coffee portafilter into two areas using two pumps and two extraction tubes with the dual extraction method proposed in the present invention. Figure 5 illustrates an example of extracting by dividing a coffee portafilter into two areas by setting different extraction water pressures and flow rates using one pump and two extraction tubes, using the dual extraction method proposed in the present invention. Figure 6 illustrates an example of checking the coffee extraction process step by step using a transparent portafilter in a current coffee machine, showing an example where the pressure of the extraction water is applied equally to achieve proper extraction. Figure 7 illustrates the difference between a portafilter with a fixed partition in the middle and a current portafilter without a partition, as a coffee portafilter for the dual extraction method of the present invention. FIG. 8 is an example of an automatic partition for a semi-automatic coffee machine for the present invention, which is embedded in the group head before extraction and automatically lowers to the portafilter when the machine is mounted and extraction begins, allowing pressure to operate individually. FIG. 9 is an example of an automatic partition for a fully automatic coffee machine for the present invention, showing an example of individual extraction by installing a partition in the brew group that extracts coffee. FIG. 10 illustrates various coffee extraction methods for enhancing complex flavor by dividing the coffee portafilter of the present invention into one or more regions. FIG. 11 illustrates dual extraction in a 1-group semi-automatic coffee machine with a single extraction device, showing dual extraction with a bottomless portafilter with or without a partition and a 2-spout portafilter. FIG. 12 illustrates examples of fixed extraction and variable extraction when using the current single extractio