Dual Coffee Grinder Clutch Layout to Prevent Bean Flavor Mixing
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Solution Overview
Problem
Conventional coffee makers with a single grinder face issues of residual coffee bean flavors mixing when switching between different types of beans, leading to suboptimal brewing results, and existing solutions with separate grinders for each type are costly and space-intensive.
Innovation Solution
A modular grinder system with a clutch mechanism that allows a single electric drive motor to selectively couple with either of two grinders, ensuring only the desired beans are ground by positioning the clutch axially on the motor shaft, enabling easy switching between bean types without mixing flavors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single grinder is used in a coffee maker, then manufacturing costs and space requirements are reduced, but residual coffee bean flavors mix when switching between different types of beans
Solution Approach 1:
The single grinder is divided into two separate grinding chambers (first grinder and second grinder), each capable of holding and grinding different types of coffee beans independently. This segmentation prevents flavor mixing while maintaining cost-effectiveness by using a shared drive motor.
Solution Approach 2:
A single drive motor is designed to universally drive both grinding chambers through a clutch mechanism. The clutch can selectively engage with either the first or second grinder, allowing one motor to perform multiple functions and reduce manufacturing costs while preventing flavor contamination.
2Object-generated harmful factors
If separate grinders are provided for each bean type, then flavor mixing is prevented, but manufacturing costs and space requirements increase
Solution Approach 1:
Two separate grinding chambers are merged into a single integrated unit that shares a common drive motor and clutch mechanism. This combining approach prevents flavor mixing through physical separation of grinding chambers while reducing manufacturing costs by eliminating the need for separate motors and control systems.
Solution Approach 2:
The clutch mechanism is designed as a universal coupling device that can engage with either grinder, allowing a single motor to serve multiple purposes. This multi-functionality reduces the overall component count and manufacturing complexity while maintaining the ability to prevent flavor mixing.
3Object-generated harmful factors
If a clutch mechanism is added to enable selective grinding, then flavor mixing is prevented and space requirements are reduced, but device complexity increases
Solution Approach 1:
A clutch mechanism serves as an intermediary component between the drive motor and the two grinding chambers. This mediator enables selective engagement of either grinder while maintaining a relatively simple mechanical design that does not significantly increase overall device complexity.
Data Source
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AI summary
A grinding system for a coffee preparation device is provided, comprising a first grinding mechanism for grinding coffee beans and a drive motor (2). A coupling (4) is provided, configured such that in a first position of the coupling (4) the first grinding mechanism is coupled to the drive motor (2), and in a second position of the coupling (4) the drive motor (2) can be coupled to a second grinding mechanism for grinding coffee beans.