Drinks preparation machine and a method for operating a drinks preparation machine
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Solution Overview
Problem
Drinks preparation machines face issues with faulty operation due to user errors when using liquid filters, particularly during descaling and cleaning processes, as incompatible liquids can damage filters and lead to further contamination or calcification, requiring frequent filter replacement and maintenance.
Innovation Solution
A drinks preparation machine equipped with a sensor to detect the presence of a liquid filter and a control device that manages the supply of liquids based on the filter's status, preventing incompatible liquids from passing through the filter during descaling or cleaning modes, ensuring safe operation and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid filter is installed in the drinks preparation machine, then the liquid supply is filtered and protected from contaminants, but the risk of faulty operation increases when users mistakenly use incompatible liquids during descaling or cleaning modes
Solution Approach 1:
The sensor detects the presence of a liquid filter and provides feedback to the control device. The control device then monitors the operating mode and prevents incompatible liquids from passing through the filter by blocking fluid supply during descaling or cleaning modes when a filter is detected, thereby avoiding filter damage while maintaining reliable liquid supply during normal operation
Solution Approach 2:
The control device acts as an intermediary between the sensor detection and the fluid supply system. It processes the sensor signal and intermediates the fluid flow by activating a blocking mechanism when incompatible operating modes are detected with a filter present, thus protecting the filter without compromising the liquid supply function
2Adaptability or versatility
If the machine operates in multiple operating modes including descaling and cleaning, then the machine's versatility is improved, but the complexity of controlling liquid supply based on filter presence increases
Solution Approach 1:
The control device serves multiple functions: it manages various operating modes (drink preparation, descaling, cleaning), monitors sensor signals for filter presence, and controls fluid supply blocking. This multi-functional approach maintains operating mode versatility while integrating the complexity into a single coordinated control system rather than adding separate independent systems
Solution Approach 2:
The system automatically detects filter presence via the sensor and self-regulates liquid supply based on the current operating mode without requiring user intervention. The control device autonomously determines when to block fluid supply, eliminating the need for complex user interfaces or manual configurations
3Reliability
If the control device prevents liquid supply when a filter is detected during descaling or cleaning modes, then filter protection is improved, but the ease of operation decreases due to automated restrictions
Solution Approach 1:
The system performs self-protection by automatically detecting filter presence and autonomously blocking incompatible liquid supply during descaling or cleaning modes. This eliminates the need for users to manually manage filter protection, making the system easier to operate despite the automated restrictions, as users simply need to select their desired operating mode without worrying about filter compatibility
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 solution reliably prevents faulty operations and reduces the frequency of filter replacement and maintenance by ensuring only compatible liquids are used with the filter, maintaining the machine's performance and preventing contamination or calcification.
Implementation Method 1
a sensor for detecting a liquid filter and a control device for controlling a supply of a liquid from the liquid container into the at least one fluid line
Implementation Method 2
with the supply of a liquid from the liquid container into the at least one fluid line, at least one portion of the liquid has to pass through the liquid filter
Data Source
AI summary
A drinks preparation machine for preparing a drink can be operated in multiple operational modes and includes a liquid container, a drinks preparation device for preparing the drink using a liquid, at least one fluid line which is connected to the liquid container and drinks preparation device, a receiving device for receiving a liquid filter in a predetermined filter position, a sensor for detecting a liquid filter, and a control device which controls a supply of a liquid from the liquid container into the fluid line. The control device is designed to prompt a liquid to be supplied into the at least one fluid line as a function of the signal of the sensor. In at least one of the operational modes, the liquid supply can be prompted independently of whether a liquid filter is placed in the predetermined filter position, and in at least one other of the operational modes, the liquid supply cannot be prompted when a liquid filter is placed in the predetermined filter position.