Brewing Unit Frame and Water Heater for Pressure Resistance
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Solution Overview
Problem
Brewing units for producing coffee from single-dose capsules or loose coffee powder face challenges in withstanding high mechanical stresses generated by pressurized water, requiring cumbersome structures to support the forces exerted during the brewing process.
Innovation Solution
A brewing unit with a brewing chamber composed of two movable portions and a structural frame that includes side and end components, where the water heater is constrained independently of the brewing chamber portions, allowing for a compact and simple design that effectively supports the forces generated by pressurized water during brewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a brewing chamber structure is designed to withstand high mechanical stresses from pressurized water, then structural strength is improved, but device complexity increases due to cumbersome supporting frames
Solution Approach 1:
The water heater housing is merged with the brewing chamber structure, where the housing serves dual functions: containing the water heater and providing structural support for pressurized water. This integration eliminates the need for separate cumbersome supporting frames while maintaining the required structural strength.
Solution Approach 2:
The water heater housing is designed as a multi-functional component that simultaneously acts as a thermal processing element housing and a mechanical support structure. This universal design allows the same component to fulfill both thermal and structural roles, reducing overall device complexity.
2Loss of energy
If the water heater is integrated with the brewing chamber, then heat retention is improved, but manufacturing precision requirements increase
Solution Approach 1:
The brewing chamber is divided into two independently manufacturable portions: the water heater housing and the brewing chamber portion. These segments can be manufactured separately with standard tolerances and then assembled together, reducing the need for high-precision monolithic manufacturing while still achieving good thermal contact for heat retention.
3Reliability
If the brewing chamber is designed as a closed structure, then watertightness is improved, but ease of manufacture decreases
Solution Approach 1:
The closed brewing chamber structure is segmented into two portions that can be manufactured separately and then assembled. This segmentation allows each portion to be manufactured using simpler processes while the assembly creates the watertight closed structure, improving ease of manufacture without compromising reliability.
Solution Approach 2:
A sealing element acts as an intermediary component between the two brewing chamber portions, creating the watertight closure. This separate sealing component allows the main structural portions to be manufactured independently with standard tolerances, while the sealing element ensures watertightness during assembly.
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 ensures a compact, economical, and efficient brewing unit with improved mechanical resistance, precise operation, and reduced manufacturing complexity, preventing water leakage and maintaining a watertight closure during the brewing cycle.
Implementation Method 1
a water heater; wherein said forces generated by the pressurized water in the brewing chamber during brewing are discharged on said water heater
Implementation Method 2
Hot water is made to flow through the capsule at an adequate pressure to extract the flavours from the ingredients contained in the capsule
Implementation Method 3
Hot water is made to flow through the capsule at an adequate pressure to extract the flavours from the ingredients contained in the capsule
Data Source
AI summary
A brewing unit includes a brewing chamber with first and second brewing chamber portions movable one with respect to the other, and a water heater. Further, the brewing unit includes a structural frame supporting the two brewing chamber portions, and on which forces generated by the pressurized water in the brewing chamber during brewing are discharged. The structural frame includes two side components arranged sideways of the brewing chamber, and two end components mechanically constrained to the side components. One of the two end components includes the first brewing chamber portion. Further, the side components and the end components form a closed structure, whereto the water heater is in turn constrained independently, with separate constraining members, from the first brewing chamber portion and adjacent thereto, outside the closed structure. The forces generated by the pressurized water in the brewing chamber during brewing are also discharged on the water heater.