Coffee Pod Infusion Unit With Delayed Sliding Element Return
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Solution Overview
Problem
Existing infusion units for coffee machines with pods or capsules containing aromatic essences are complex and prone to wear out over time, leading to alignment issues and maintenance challenges due to precise elastic components that lose their setting and become blocked.
Innovation Solution
A simplified infusion unit design featuring a movable male and female infuser with a sliding element for pod housing and release, utilizing a push cam actuator and locking mechanisms to ensure reliable pod insertion and ejection, reducing the need for delicate components and fine-tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If precise elastic devices are used for positioning male and female infuser, then positioning precision is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The patent removes the complex elastic positioning devices from the system entirely. Instead of using elastic components to maintain positioning, the design relies on the geometric arrangement of the infusers and the pod insertion mechanism itself to ensure proper alignment. This extraction of the problematic elastic components eliminates the need for precise manufacturing tolerances while reducing device complexity.
Solution Approach 2:
The male and female infusers are designed to self-align through their geometric configuration during the pod insertion process. The infusers naturally position themselves relative to each other through the mechanical action of inserting and ejecting pods, eliminating the need for external elastic positioning mechanisms. This self-aligning mechanism reduces both complexity and maintenance requirements.
2Manufacturing precision
If elastic devices are used for pod positioning, then positioning accuracy is improved, but reliability decreases over time due to wear
Solution Approach 1:
The patent eliminates elastic positioning devices from the system, removing the source of wear and reliability degradation. The positioning function is achieved through the rigid geometric relationship between the male infuser, female infuser, and pod housing, which do not suffer from fatigue or loss of elastic properties over time.
Solution Approach 2:
Instead of using elastic components to actively maintain positioning, the design inverts the approach by using rigid geometric constraints that passively ensure positioning through the natural mechanics of pod insertion and ejection. The system relies on the pod itself as the positioning reference rather than elastic components.
3Manufacturing precision
If complex receiving and moving means are used for pod insertion, then positioning precision is improved, but ease of manufacture decreases
Solution Approach 1:
The patent removes complex receiving and moving means from the system. The pod housing and infusers are designed with simple geometric features that provide inherent positioning during the basic insertion and ejection motions, eliminating the need for additional complex mechanisms and simplifying manufacturing.
Solution Approach 2:
The male infuser serves multiple functions: it performs the extraction operation, provides positioning reference for the female infuser, and acts as part of the pod ejection mechanism. This multi-functionality reduces the number of separate components needed, simplifying both the device structure and manufacturing process while maintaining positioning precision.
Data Source
Figure 1~2
Figure 3~4
AI summary
This invention is related to an infusion unit (1), e.g. for coffee machines functioning with pods or capsules (2) containing aromatic essences. The device comprises a female infuser (3) that defines an infusion chamber (4) suitable for housing a pod (2), and a male infuser (5) that cooperates with the female infuser (3) to close at least partially said chamber (4). At least one of the infusers is movable with respect to the other. The unit further comprises housing and moving means for the pod, comprising a sliding element (6) with a seating (7) suitable for the introduction of the pod. Furthermore, the infusion unit comprises locking means (15) of the sliding element (6) in the forward position suitable for delaying the return of the sliding element (6) towards the rear position with regard to the opening of the infusion chamber (4).