Coffee Machine Bypass Element for Full-System Decalcification
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Solution Overview
Problem
Fully automatic coffee machines are limited in their decalcification process, as brewing chambers are sensitive to descaling agents, and existing valve systems are expensive and complex, often excluding the coffee spout and areas downstream of the brewing group from effective decalcification, especially in regions with hard water.
Innovation Solution
A removable brewing group allows for the insertion of an additional element that creates a bypass between the supply and discharge lines, enabling decalcification of the entire fluid system without the need for complex valve systems, and includes a receiving device and coupling elements for easy operation and correct placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex valve system is used to limit decalcification to areas before the brewing chamber, then the brewing chamber is protected from damage by descaling agents, but the coffee spout and areas downstream are excluded from decalcification and the system becomes expensive and complex
Solution Approach 1:
The brewing group is segmented into a removable brewing chamber and a fixed housing containing the coupling points. This allows the brewing chamber to be separated for protection during decalcification while enabling the downstream areas (coffee spout, discharge line) to be accessed by the decalcifying agent through the bypass connection.
Solution Approach 2:
A bypass connection is introduced as an intermediary element that allows the decalcifying agent to flow through the downstream areas without passing through the brewing chamber. This mediator enables complete system decalcification while protecting the sensitive brewing chamber components.
2Ease of operation
If conventional descaling agents are used to thoroughly clean the coffee spout, then complete decalcification is achieved, but the brewing chamber walls are attacked and damaged
Solution Approach 1:
The fluid system is segmented into two pathways: the normal brewing pathway through the brewing chamber, and a bypass pathway for decalcification. During decalcification, the bypass is activated to route the aggressive descaling agent away from the brewing chamber while allowing it to clean the coffee spout and downstream components.
Solution Approach 2:
The system dynamically switches between brewing mode and decalcification mode by activating the bypass connection. This dynamic reconfiguration allows the same system to perform two opposing functions: normal coffee preparation through the brewing chamber, and aggressive decalcification through the bypass.
3Ease of operation
If the brewing chamber is completely removed for decalcification, then complete system cleaning is possible, but the operation becomes more complex and time-consuming
Solution Approach 1:
Only the brewing chamber is removed and set aside, while the housing containing the coupling points remains in place. The bypass connection is activated within the housing to enable decalcification of downstream areas, combining partial disassembly with complete system cleaning capability.
Solution Approach 2:
The bypass connection is pre-configured in the housing with coupling points positioned to automatically connect when the brewing chamber is removed. This preliminary arrangement eliminates the need for complex manual routing or additional assembly steps during the decalcification process.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The machine has a water tank (1) which is provided with a pump and a central unit (6). A feed line (5) is connected with the central unit. A derivative unit (7) is extended from the brewing unit and a coffee outlet (8) is connected with an additional element (10), so that fluidic connection between the feed line and the derivative unit is developed.