Hot Water Bypass Brewing for Large Portions Without Over-Extraction
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Solution Overview
Problem
Conventional brewing devices are expensive and have high space requirements due to dual heating systems, which can lead to over-extraction of coffee, resulting in undesirable bitter substances when brewing large portions.
Innovation Solution
A brewing device with a hot water supply system that includes a bypass line and a controllable switching device, allowing hot water to be directed either through the brewing unit or directly to the beverage outlet, reducing the amount of water passing through the coffee grounds and maintaining flavor quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual heating system is used to provide hot water for brewing and direct dispensing, then the beverage preparation versatility is improved, but the device cost and space requirements increase
Solution Approach 1:
The patent merges the functions of two separate heating systems into a single heating system that serves both brewing and direct hot water dispensing purposes. The brewing unit is configured to receive hot water from the same heating system that supplies the hot water bypass line, eliminating the need for duplicate heating components and reducing overall device complexity while maintaining beverage preparation versatility.
Solution Approach 2:
The single heating system is designed to perform multiple functions: it heats water for the brewing unit and simultaneously provides hot water for direct dispensing through the bypass line. This multi-functional approach allows the system to replace the dual heating system without compromising the ability to prepare different types of beverages.
2Quantity of substance
If hot water is supplied through the brewing unit for large portion brewing, then the beverage volume is increased, but unwanted bitter substances are released due to over-extraction
Solution Approach 1:
The patent segments the hot water flow path into two separate routes: one through the brewing unit for extraction and one through the bypass line for direct dispensing. This segmentation allows the system to control the amount of water passing through the coffee grounds independently from the total beverage volume, enabling large portion brewing without over-extraction by diverting excess water through the bypass line.
Solution Approach 2:
The hot water bypass line acts as an intermediary pathway that allows hot water to reach the beverage outlet without passing through the brewing unit. This mediator route enables the system to supply hot water for large volume beverages while avoiding the harmful over-extraction effect by providing an alternative path for water that would otherwise contribute to bitter substance release.
3Quantity of substance
If the brewing time is extended to increase beverage volume, then the portion size is increased, but the flavor quality deteriorates and bitter substances are released
Solution Approach 1:
The patent maintains continuous hot water supply capability through the bypass line while the brewing process occurs. Instead of extending brewing time to increase volume, the system continuously provides hot water through the bypass line alongside the brewing process, allowing volume increase without additional extraction time that would cause over-extraction and bitter substance release.
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
This configuration reduces costs and space requirements while ensuring that only desired flavors are extracted, minimizing the release of bitter substances, even when brewing large portions, and allows for efficient dispensing of hot beverages through a single line.
Implementation Method 1
a hot water supply device (22) with an outlet (22A) for hot water
Implementation Method 2
a controllable hot-water switching device which is configured to temporarily connect the hot-water bypass line (40) to the outlet (22A) of the hot-water supply device (22)
Data Source
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AI summary
The invention relates to a brewing device (1) for preparing a hot beverage, comprising: a hot water supply device (22) with an outlet (22A) for hot water; a brewing unit (31) for carrying out a brewing process for preparing a brewed hot beverage, which is configured for receiving hot water from the hot water supply device (22) and for dispensing the brewed hot beverage through a fluid outlet line (36) into a hot beverage outlet (65); a hot water bypass line (40); a controllable hot water switching device (50) which is configured for temporarily connecting the hot water bypass line (40) to the outlet (22A) of the hot water supply device (22), wherein hot water supplied into the hot water bypass line (40) can be dispensed into the hot beverage outlet (65); a control unit (5) for controlling the hot water switching device (50). The hot beverage outlet (65) comprises a hot beverage dispensing line (60), wherein the fluid outlet line (36) opens into the hot beverage dispensing line (60) downstream of the brewing unit (31) and the hot water bypass line (40) opens into the hot beverage dispensing line downstream of the hot water switching device (50), so that the brewed hot beverage and the hot water supplied into the hot water bypass line (40) can be dispensed by the hot beverage dispensing line (60).