Bean grinding machine

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Solution Overview

Problem

Conventional bean grinding machines face issues with mildew and bad odor due to residual bean powder that cannot be easily cleaned from the grinding mechanism, particularly because the lower grinding member is not detachable.

Innovation Solution

A bean grinding machine design where both the first and second grinding members are rotatable and removable from the base seat, allowing for easy cleaning and assembly, with a locking mechanism that ensures secure attachment during operation and facilitates disassembly for maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the lower grinding member is fixed to the base seat for stable operation, then the structural stability is improved, but the ease of cleaning deteriorates due to inability to remove residual powder

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of cleaning
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The grinding mechanism is divided into separable components: the upper grinding member can be removed from the base seat, and the lower grinding member can be detached from the drive transmission. This segmentation allows each component to be independently cleaned, solving the cleaning difficulty while maintaining structural stability during operation through the drive transmission connection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lower grinding member is extracted from the fixed structure and made detachable from the drive transmission. This extraction enables complete removal of the grinding members for thorough cleaning, eliminating the accumulation of residual powder while the drive transmission provides stable operational connection when assembled.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If the upper grinding member is made removable for cleaning, then the ease of cleaning is improved, but the device complexity increases due to additional removal and installation mechanisms

Engineering Contradiction:
Improveease of cleaningVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The grinding mechanism is segmented into the upper grinding member, lower grinding member, and drive transmission as separate removable components. This segmentation enables cleaning without requiring complex disassembly mechanisms, as each component can be independently removed and reinstalled through simple interface connections.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If both grinding members are made detachable for easy cleaning, then the ease of cleaning is improved, but the reliability deteriorates due to potential loosening during operation

Engineering Contradiction:
Improveease of cleaningVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The grinding members are segmented as detachable components with defined interfaces to the drive transmission and base seat. These interfaces are designed to provide secure connection during operation while allowing easy removal for cleaning, balancing reliability and ease of maintenance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lower grinding member is extracted from the fixed structure and made detachable from the drive transmission. This extraction enables complete removal for cleaning while the drive transmission connection ensures reliable operation when assembled, preventing loosening through proper mechanical engagement.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP3238583B1Bean grinding machine
Publication Date: 2020.03.04 TSANN KUEN ZHANGZHOU ENTERPRISE CO LTD
  • EP3238583B1 patent drawingFigure 1
  • EP3238583B1 patent drawingFigure 2
  • EP3238583B1 patent drawingFigure 3

AI summary

A bean grinding machine includes a base seat (1), a bean container (2) mounted on the base seat (1), and a grinding mechanism (3) removably mounted on the base seat (1). The grinding mechanism (3) includes first and second grinding members (32, 33) which are rotatable relative to and cooperate with each other to define a grinding space (30) for receiving beans introduced from the bean container (2). Both the first and second grinding members (32, 33) can be removed from the base seat (1) for facilitating cleaning.