Coffee Machine Valve Arrangement for Automatic Water and Steam Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Coffee-making machines lack an efficient and error-free method to manage hot water and steam distribution, leading to operational errors and hygiene issues due to the inability to reduce pressure and manage residual water effectively during function transitions.
Innovation Solution
A valve arrangement with independent valves actuated by a cam coupled to the brewing chamber's movement, allowing for automatic control of hot water and steam distribution to specific lines based on the machine's functional position, ensuring flexible and error-free operation by assigning separate valves to each line path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single valve is used to control multiple line paths, then the device complexity is reduced, but the reliability of switching and control precision deteriorates
Solution Approach 1:
The patent divides the valve control system into multiple independent valves (first valve, second valve, third valve) instead of using a single valve to control multiple line paths. Each valve is responsible for controlling a specific line path to and from the brewing chamber, which segmenting the control function improves switching reliability and eliminates operating errors while maintaining manageable device complexity through modular organization.
2Ease of operation
If manual valve switching is used, then the ease of operation is reduced, but the device complexity is also reduced
Solution Approach 1:
The valve arrangement operates automatically based on the brewing chamber position without requiring manual intervention. The system uses the brewing chamber's own movement (between brewing position and other positions) to trigger automatic valve switching through mechanical coupling, making the system self-regulating and eliminating the need for manual valve operation while maintaining relatively simple device architecture.
Solution Approach 2:
The valve control system incorporates feedback from the brewing chamber position to automatically adjust valve states. The brewing chamber's position (brewing position vs. other positions) serves as the feedback signal that determines which valves should be open or closed, ensuring the correct line paths are active for each operational state without requiring external control inputs.
3Ease of operation
If residual water is not drained automatically, then the ease of operation is improved, but hygiene and maintenance quality deteriorates
Solution Approach 1:
The system automatically drains residual water from the brewing chamber without requiring manual operation. When the brewing chamber is in a non-brewing position, the valve arrangement automatically opens the discharge channel to drain residual water, and then automatically closes it when the brewing chamber returns to the brewing position, eliminating residual water contamination while maintaining operational simplicity.
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 solution enhances user convenience and reduces operating errors by enabling automatic and precise control of hot water and steam distribution, improving hygiene by preventing residual water accumulation and ensuring accurate water supply for different functions, while maintaining flexibility and efficiency.
Implementation Method 1
each having a tappet for actuation which can be activated with a cam coupled to the brewing chamber on a cam rail, and the cam is linearly movable during operation
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The coffee making machine has an inlet (11) for supplying hot water or water vapor. A valve arrangement (1) is provided with multiple valves (5a,5b,5c) that are independently operated. A valve is arranged between the inlet and a broth chamber, where another valve is arranged between the inlet and a drain (19). A third valve is arranged between the inlet and a steam pipe (21).