Coffee extraction system and coffee extraction method using same
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Solution Overview
Problem
The existing coffee extraction systems face challenges in maintaining even pressure distribution within the coffee extractor, leading to difficulties in extracting coffee liquid and reducing yield, while also losing unique coffee fragrance due to bubble separation during the extraction process.
Innovation Solution
A coffee extraction system with a multi-channel water supply mechanism and a gas-liquid separator to evenly distribute pressure and separate coffee liquid into liquid and gas phases, allowing for efficient extraction and preservation of coffee fragrance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot water is supplied from the bottom to the top using a transport pump, then coffee liquid is extracted, but ground coffee beans accumulate on the upper section causing unbalanced pressure distribution and reduced extraction yield
Solution Approach 1:
The water supply system is segmented into multiple channels (first water supply channel from bottom, second water supply channel from top) that operate simultaneously or sequentially. This segmentation allows water to be supplied to different regions of the coffee bed, preventing accumulation and ensuring uniform pressure distribution throughout the extraction chamber.
Solution Approach 2:
The invention transitions from single-direction (bottom-to-top) water supply to multi-directional supply by adding a top-to-bottom channel. This dimensional change in water flow approach creates balanced pressure distribution by counteracting the accumulation effect that occurs with unidirectional flow.
2Productivity
If bubbles are separated and discharged during extraction, then coffee liquid is collected, but aroma ingredients are lost and unique coffee fragrance is reduced
Solution Approach 1:
A gas-liquid separator is introduced as an intermediary component between the extraction chamber and the collection system. This separator allows bubbles to be gently separated from the coffee liquid without violent agitation that would cause aroma loss. The separator maintains the integrity of aroma ingredients while still achieving efficient liquid collection.
Solution Approach 2:
The invention converts the harmful effect of bubble formation (which causes aroma loss through violent separation) into a beneficial process by using gentle separation methods. The gas-liquid separator utilizes the natural rise of bubbles without requiring aggressive mechanical separation, thereby preserving aroma ingredients while maintaining extraction efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures easy extraction of coffee liquid with increased yield and preserves the unique coffee fragrance by maintaining even pressure distribution and separating and cooling the coffee liquid to prevent fragrance loss.
Implementation Method 1
hot water is supplied to pass through a coffee extractor 10, in which ground coffee beans are accommodated, from the bottom to the top thereof using a transport pump so that the ground coffee beans are pressurized by the hot water
Implementation Method 2
a gas-liquid separator 400, which divides the coffee liquid, containing bubbles, extracted from the coffee extractor 300 into a liquid-phase coffee component and a gas-phase coffee fragrance component
Implementation Method 3
a heat exchanger 600, which is connected to the balance tank 500 and cools the mixed coffee liquid of the liquid-phase coffee component and the gas-phase coffee fragrance component
Data Source
AI summary
Shown are a coffee extraction system and a coffee extraction method using the same. A coffee extraction system, according to one embodiment of the present invention, includes: an extraction water storage tank which stores extraction water; a body unit which accommodates ground coffee beans and includes a coffee extractor which is supplied with the extraction water from the extraction water storage tank to extract liquid coffee, wherein the coffee extractor accommodates the ground coffee beans and has a first extraction water supply channel communicating with the extraction water storage tank and with a side portion to which the extraction water is supplied; an upper cover, coupled to an upper portion of the body unit, which has a second extraction water supply channel, which communicates with the extraction water storage tank and through which the extraction water is supplied, and which has a first liquid coffee discharge channel through which the extracted liquid coffee is discharged; and a lower cover, coupled to a lower portion of the body unit, which has a third extraction water supply channel, which communicates with the extraction water storage tank and through which the extraction water is supplied, and which has a second liquid coffee discharge channel, through which the extracted liquid coffee is discharged.