Extraction device and extracting method

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional methods for making cold brew coffee are time-consuming, requiring 12-24 hours, and inefficient, leading to space and energy consumption issues, as well as potential flavor contamination from prolonged soaking.

Innovation Solution

An extraction device with a first and second container, a valve, and an air suction device that decreases internal pressure to facilitate rapid extraction of soluble substances from ground coffee, allowing for instant production of cold brew coffee.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If ground coffee is soaked in water for extended periods (12-24 hours) to extract full flavor, then extraction completeness is improved, but extraction time and space occupation increase significantly

Engineering Contradiction:
Improveextraction completenessVSAvoidextraction time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent changes the physical parameter of pressure to accelerate extraction. By reducing the pressure inside the extraction container to create a pressure difference, the liquid rapidly penetrates the ground coffee, achieving complete extraction within minutes instead of hours. This parameter change transforms the extraction process from time-dependent to pressure-dependent.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs periodic action through repeated pressure reduction and restoration cycles. The air suction device periodically reduces pressure to facilitate extraction, then the valve restores normal pressure. This periodic pressure variation enhances extraction efficiency while minimizing required time, solving the contradiction between extraction completeness and extraction time.

Inventive Principle:
Principle #19Periodic action

2Manufacturing precision

If ground coffee is soaked for 12-24 hours to ensure full extraction, then flavor quality is improved, but impurity extraction increases affecting flavor

Engineering Contradiction:
Improveextraction completenessVSAvoidimpurity extraction
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

By changing the pressure parameter from atmospheric to reduced pressure, the patent achieves rapid extraction that selectively extracts desirable flavor compounds before impurities can be extracted. The short exposure time under reduced pressure prevents over-extraction of bitter impurities while ensuring complete extraction of aromatic substances.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent rushes through the extraction process by applying pressure reduction, enabling complete flavor extraction in minutes rather than hours. This rapid extraction skips the harmful prolonged soaking period that would otherwise extract impurities, achieving both complete extraction and purity simultaneously.

Inventive Principle:
Principle #21Skipping (Rushing through)

3Ease of operation

If large quantities of cold brew coffee are pre-prepared to meet market demand, then customer service quality is improved, but refrigerator space occupation and energy consumption increase

Engineering Contradiction:
Improvecustomer service qualityVSAvoidrefrigerator energy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by stationary object

Solution Approach 1:

The patent enables self-service capability where the extraction device can rapidly produce cold brew coffee on-demand without requiring large pre-prepared quantities. The automated pressure-based extraction system allows immediate preparation of fresh coffee, eliminating the need for bulk storage and reducing refrigerator energy consumption while maintaining high customer service quality.

Inventive Principle:
Principle #25Self-service

4Productivity

If ground coffee is soaked for extended periods to extract flavor, then extraction efficiency is improved, but the process becomes time-consuming and troublesome

Engineering Contradiction:
Improveextraction efficiencyVSAvoidpreparation time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent dramatically improves extraction efficiency by changing the pressure parameter. The air suction device creates a pressure difference that forces rapid liquid penetration through ground coffee, achieving in minutes what traditionally required hours of soaking. This parameter change decouples extraction efficiency from time investment.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The periodic pressure reduction and restoration cycles enhance extraction efficiency while minimizing time. Each pressure cycle maximizes liquid penetration and solute extraction, achieving high productivity in a fraction of the traditional time required, thus resolving the contradiction between efficiency and time consumption.

Inventive Principle:
Principle #19Periodic action

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 device significantly reduces extraction time to minutes, saving space and energy, while minimizing impurity extraction and improving flavor quality by shortening the soaking period.

Implementation Method 1

The air suction device is configured to decrease an internal pressure of the first container to a predetermined value. When the internal pressure of the first container reaches the predetermined value, the valve is activated to connect the second container to the first container.

Methodology Applied
Scientific EffectPressure difference: Pressure Gradient

Implementation Method 2

The valve is connected to the second container and the first container. When the internal pressure of the first container reaches the predetermined value, the valve is activated to connect the first container to the second container.

Methodology Applied
Scientific EffectPressure-sensitive valve operation: Valve

Data Source

PatentUS11730305B2Extraction device and extracting method
Publication Date: 2023.08.22 WISTRON CORP
  • US11730305B2 patent drawing
  • US11730305B2 patent drawing
  • US11730305B2 patent drawing

AI summary

The disclosure relates to an extraction device for extracting soluble favors from raw materials that are distributed within liquid. The extraction device includes a first container, a second container, a valve, and an air suction device. The second container is configured for storing the mixture of the raw materials and the liquid. The valve is connected to the second container and the first container. The air suction device is connected to the first container and configured to decrease the internal pressure of the first container to a predetermined value. When the internal pressure of the first container reaches the predetermined value, the valve is activated to connect the first container to the second container. The disclosure also relates to an extracting method for using the extraction device.