Espresso machine with grinder dosing control
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Solution Overview
Problem
Existing espresso machines lack automation, sophistication, and ease of use, particularly in adjusting coffee grind settings and tampering, leading to inconsistent brewing results.
Innovation Solution
An espresso machine with a built-in coffee grinder and a removable tamper, featuring a microprocessor-controlled grind adjustment system, a removable hopper with safety shutters, and a stable portafilter cradle, along with a drip tray and tamper receptacle, ensuring consistent grind quality and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a built-in coffee grinder is added to an espresso machine, then coffee preparation functionality is improved, but device complexity increases
Solution Approach 1:
The patent combines the coffee grinder and espresso machine into a single integrated unit, merging two separate functions (grinding and brewing) into one device. This resolves the contradiction by providing enhanced coffee preparation functionality while managing device complexity through unified design rather than separate components.
Solution Approach 2:
The espresso machine is designed with multi-functionality, serving both as a coffee grinder and an espresso brewing device. The universal design allows the machine to perform multiple operations (grinding, dosing, brewing) within a single system, improving versatility while maintaining manageable complexity through integrated control.
2Manufacturing precision
If manual dosing control is used, then device simplicity is maintained, but dosing precision and consistency deteriorate
Solution Approach 1:
The grinder is equipped with automatic dosing control that self-regulates the grinding and dosing process without requiring manual intervention for precise measurements. The system automatically controls the grind time and amount based on pre-set parameters, achieving consistent dosing precision while minimizing the complexity of manual control mechanisms.
Solution Approach 2:
The device incorporates adjustable dosing parameters that can be modified to achieve precise dosing. By allowing users to change parameters such as grind time, dose amount, and strength settings, the system achieves manufacturing-level dosing precision through programmable control rather than complex mechanical adjustment mechanisms.
3Ease of operation
If the portafilter must be held manually during grinding, then device simplicity is maintained, but ease of operation deteriorates
Solution Approach 1:
A support cradle is introduced as an intermediary component between the grinder and the user's hands. The cradle holds the portafilter in place during the grinding process, allowing hands-free operation. This mediator device improves ease of operation by eliminating the need for manual holding while adding minimal complexity through a simple mechanical support structure.
Solution Approach 2:
The support cradle enables the system to service itself during operation by automatically holding and positioning the portafilter without requiring continuous manual intervention. The cradle's design allows the portafilter to be securely positioned and released automatically, improving ease of operation while maintaining simple mechanical functionality.
4Reliability
If the grinder operates without hopper safety mechanisms, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The hopper safety mechanism implements preliminary anti-action by preventing the grinder from operating when the hopper is not properly positioned or filled. The system detects hopper status before allowing operation, preventing potential damage or malfunction. This safety feature maintains reliability while minimizing impact on ease of operation through automatic detection and prevention rather than requiring manual safety checks.
Data Source
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AI summary
An espresso machine has a built-in coffee grinder. An electrical switch toggles between a one cup dose and a two cup dose, The switch works in conjunction with a dose strength adjustment. Alteration of the dose strength adjustment alters the dose strength for both the one cup of two cup dose settings. The internal coffee grinder dispenses into a portafilter that is held in a hand free support cradle. In some embodiments, the upper burr head of the grinder is retained by a bracket. The combination of upper burr head and bracket allows the upper burr head to removed and replaced without having to re-set the grind size.