Capsule Loading Assembly With Movable Sensor for Reliable Beverage Brewing
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Solution Overview
Problem
Existing machines for preparing beverages using capsules are complex, cumbersome, and prone to malfunction due to the integration of optical sensors and complex actuation systems within a humid and high-temperature environment, making them unreliable and costly.
Innovation Solution
A simplified machine design with a compact structure that uses a single mechanism for reciprocating movement between infusion chamber parts, with a movable optical sensor and retaining mechanisms to hold capsules in a stable position for easy detection and processing, reducing the need for complex optical reading devices and protecting the sensor from harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical sensor and actuation system are integrated within infusion chamber, then capsule detection and processing are enabled, but machine complexity and susceptibility to malfunction increase due to humid and high-temperature environment
Solution Approach 1:
The machine is divided into distinct functional modules: capsule insertion guide, infusion chamber with capsule holder and injector, and control system. This segmentation allows each component to be optimized independently and reduces the complexity of integrating sensitive electronics with high-temperature brewing components.
Solution Approach 2:
A movable optical sensor is introduced as an intermediary component that temporarily enters the infusion chamber only when needed for capsule detection. The sensor is retracted to a protected position during the brewing process, avoiding direct exposure to harsh conditions while maintaining detection capability.
2Measurement precision
If optical sensor is mounted stationary in intermediate position, then capsule code reading is enabled, but machine structure becomes cumbersome and costly
Solution Approach 1:
The optical sensor is made movable rather than stationary, allowing it to dynamically position itself in the intermediate detection location only when a capsule is present. The sensor can move to a retracted position when not needed, simplifying the overall machine structure and reducing costs associated with permanent mounting infrastructure.
Solution Approach 2:
The movable optical sensor serves multiple functions: it can detect capsules at various positions within the infusion chamber, accommodate different capsule orientations, and be retracted to protect itself from heat and humidity. This multi-functionality reduces the need for multiple specialized components.
3Measurement precision
If capsule is held in intermediate position for detection, then optical reading accuracy improves, but actuation system complexity increases
Solution Approach 1:
The retaining mechanism is integrated into the capsule holder assembly, combining the functions of capsule retention and positioning into a single structural element. This reduces the number of separate actuation components needed and simplifies the overall actuation system.
Solution Approach 2:
The capsule holder's reciprocating movement automatically positions the capsule in the intermediate detection location during its normal operational cycle, without requiring separate actuation mechanisms. The system uses its own operational movements to facilitate detection, eliminating the need for additional dedicated positioning actuators.
4Ease of operation
If complex transfer arrangement with electric motor and belt transmission is used, then capsule-holder positioning is achieved, but machine becomes cumbersome and prone to malfunction
Solution Approach 1:
The complex electric motor and belt transmission system is removed entirely. Instead, the capsule holder is designed to reciprocate using a simpler mechanical linkage connected to the injector movement, extracting the unnecessary complexity while maintaining the essential positioning function.
Solution Approach 2:
The electrical actuation system with motor and belt transmission is replaced with a direct mechanical linkage system. The injector's reciprocating motion is mechanically coupled to the capsule holder, creating a synchronized movement system that is more reliable and requires no additional power source.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in a more reliable, compact, and cost-effective machine that can handle a wide range of capsules from different manufacturers with increased precision and reduced power consumption, while maintaining high operational reliability and safety.
Implementation Method 1
an optical sensor device, for detecting graphic information associated to the body of a capsule
Implementation Method 2
the capsule itself is set substantially coaxial to the capsule-holder, within the latter The machine moreover has an actuation system, which is operable to bring about relative displacements of the injector and the capsule-holder
Data Source
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AI summary
A machine for preparing liquid food products using capsules (30) comprises a dispensing assembly (1) having a first part (3) and a second part (5) designed to define an infusion chamber between them and a loading arrangement including an insertion guide (7) that defines at least part of a displacement path of the capsule (30) in the dispensing assembly (1). The loading arrangement comprises first retaining means (15), which define an intermediate retention position of the capsule (30). The first retaining means (15) can be switched from the respective condition of retention to a respective condition of release of the capsule (30) by applying to the capsule itself a force of thrust in the direction of movement.