Machine for preparing a beverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Beverage preparation machines often leave residual liquid in capsules and receptacles, leading to unclean conditions and potential microorganism growth, especially when not used immediately after preparation, and existing automatic ejection mechanisms increase cost and complexity while reducing reliability.
Innovation Solution
A biasing device and capsule-detecting mechanism that actively moves the injection head between active and inactive positions based on the presence or absence of a capsule, using a resilient element and interlock to prevent the machine from remaining inactive, promoting cleanliness and preventing microorganism growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a motor-driven automatic ejection mechanism is provided, then the spent capsule is automatically removed, but the cost and complexity of the machine increases
Solution Approach 1:
The injection head automatically returns to the inactive position by its own weight, eliminating the need for motor-driven ejection mechanisms. The system uses gravity and a simple biasing device to achieve automatic capsule removal, making the machine self-servicing without complex motors or actuators.
Solution Approach 2:
The complex motor-driven ejection mechanism is extracted and replaced with a simple biasing device that allows the injection head to return to its inactive position naturally. This removes unnecessary complexity while maintaining the automatic capsule removal function.
2Device complexity
If the injection head remains in the inactive position, then the machine structure is simplified, but residue deposition and microorganism growth occur
Solution Approach 1:
The injection head is designed to be mobile between active and inactive positions, with a biasing device that ensures it returns to the inactive position after use. This dynamic positioning prevents prolonged exposure of residual liquid to the environment, reducing microorganism growth risk while maintaining structural simplicity.
Solution Approach 2:
The biasing device is pre-configured to automatically return the injection head to the inactive position after beverage preparation. This preliminary action of returning to the clean position prevents residue deposition and microorganism growth before they can occur, without requiring complex active cleaning mechanisms.
3Reliability
If a biasing device is activated by capsule-detecting means, then the injection head is prevented from remaining inactive, but the device complexity increases
Solution Approach 1:
The capsule-detecting means and the biasing device are merged into a single integrated system. The detection mechanism directly triggers the biasing action, eliminating the need for separate control systems and reducing overall device complexity while maintaining reliable prevention of the inactive state.
Solution Approach 2:
A simple mechanical intermediary (the biasing device) connects the capsule detection event to the injection head positioning action. This intermediary translates the detection signal into physical movement without requiring complex electronic controls, maintaining reliability while minimizing added complexity.
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
Prevents the machine from remaining in an inactive state, ensuring timely removal of spent capsules and maintaining cleanliness, reducing the risk of microorganism growth and residue deposition, while simplifying the design and reducing costs.
Implementation Method 1
a biasing device configured to selectively prevent the injection head from remaining in the first, inactive position
Data Source
Figure 1
Figure 2A
Figure 2B~3B
AI summary
An beverage-preparation apparatus comprises a capsule receptacle (204, 300, 400, 416, 500) receiving a beverage capsule (306, 418) containing a quantity of a beverage ingredient,and an injection head (202) for injecting fluid into said beverage capsule (306, 418) to produce a beverage, said injection head (202) being mobile between a first, inactive position and a second, active position, and further comprising a biasing device (226, 304) selectively preventing the injection head (202) from remaining in the first, inactive position, and a capsule-detecting means (308, 402, 404, 422, 508) activating the biasing device (226, 304) when the presence of a beverage capsule (306, 418) within said capsule receptacle (204, 300, 400, 416, 500)is detected.