Coffee Grinder-Doser Weighing Shield Against Powder Infiltration
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Solution Overview
Problem
Existing coffee grinder-dosers face issues with precision in dispensing coffee powder due to infiltration of coffee powder and dirt into the weighing device, leading to inaccurate measurements and the need for frequent cleaning, which is inconvenient and impractical.
Innovation Solution
The coffee grinder-doser incorporates protection mechanisms, such as a block with sloping portions and additional barriers, to divert and prevent coffee powder from entering the weighing device's hollow body, ensuring accurate weight measurements and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the weighing device is exposed to coffee powder for dispensing, then the dispensing function is enabled, but coffee powder infiltrates the weighing mechanism causing measurement errors
Solution Approach 1:
The device is divided into separate functional zones: a dispensing zone for coffee powder and a protected weighing zone. The hollow body encloses the weighing mechanism, physically separating it from the coffee powder environment, allowing the dispensing function to operate while protecting the weighing precision.
Solution Approach 2:
A hollow body acts as an intermediary barrier between the coffee powder and the weighing mechanism. This intermediate structure allows the weighing device to function accurately while preventing direct contact with coffee powder that would cause measurement errors.
2Measurement precision
If cleaning is performed frequently to remove coffee powder from the weighing device, then measurement accuracy is maintained, but the machine operation is interrupted and productivity decreases
Solution Approach 1:
The hollow body provides preliminary protection against coffee powder infiltration before contamination occurs. By preventing powder entry at the source through the enclosed structure, the weighing mechanism remains clean without requiring frequent interruptions for cleaning, thus maintaining both accuracy and productivity.
3Reliability
If a hollow body encloses the weighing mechanism to protect it, then coffee powder infiltration is prevented, but the device complexity increases
Solution Approach 1:
The hollow body serves multiple functions simultaneously: it protects the weighing mechanism from coffee powder, provides a mounting structure for the dispensing components, and defines the dispensing zone. This multi-functionality achieves reliable protection without proportionally increasing device complexity.
Data Source
AI summary
Coffee grinder-doser including a grinder-doser body, a containment compartment which contains an electric motor and at least a coffee grinder operatively connected to the electric motor, configured to grind coffee beans into grounds, a conveyor of the ground coffee, a support for a container suitable to receive the ground coffee from an output of the conveyor, the support being mechanically connected to a weighing device by pulley means, the weighing device being placed inside hollow body, where the pulley means has a block which discharges the weight from the support to the weighing device, the block crossing a front opening of the hollow body, and where the grinder-doser includes means of protecting the ground coffee joined to the block in order to divert and/or increase the path of the ground coffee to enter the hollow body through the front opening.