Multi-Outlet Nozzle Assembly for Barista-Quality Beverage Dispensing
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Solution Overview
Problem
Domestic coffee machines struggle to produce barista-quality espresso and other beverages without requiring extensive training or frequent cleaning, and they often fail to deliver the desired flow rates and gas/liquid ratios for various beverage types.
Innovation Solution
A beverage preparation machine with an outlet nozzle assembly featuring multiple conduits and delivery holes of different sizes, allowing for selective delivery of beverages to optimize flow rates and gas/liquid ratios, along with a waste outlet for easy cleaning and waste management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single outlet nozzle assembly is used in domestic coffee machines, then the device complexity is reduced and ease of operation is improved, but the ability to produce barista-quality espresso with proper flow rates and gas/liquid ratios deteriorates
Solution Approach 1:
The outlet nozzle assembly is segmented into multiple independent outlets (espresso outlet, coffee outlet, steam outlet) within a single integrated structure. Each outlet is designed with specific dimensions and flow characteristics optimized for its intended beverage type, allowing the system to deliver barista-quality results across multiple beverage categories without requiring separate complex devices for each function
2Adaptability or versatility
If multiple outlets with different sizes are provided in the outlet nozzle assembly, then the adaptability to deliver proper flow rates for different beverages is improved, but the device complexity increases
Solution Approach 1:
Multiple outlets with different sizes and functions are merged into a single integrated outlet nozzle assembly. The assembly combines an espresso outlet with restricted flow, a coffee outlet with higher flow capacity, and a steam outlet, all within one compact structure that is easily replaceable as a single unit, thereby reducing operational complexity despite the multi-functional capability
3Ease of manufacture
If a waste outlet is integrated into the outlet nozzle assembly, then the ease of cleaning and waste management is improved, but the device complexity increases
Solution Approach 1:
A dedicated waste outlet is extracted and integrated into the outlet nozzle assembly, allowing waste liquid to be separately channeled away from the beverage outlets. This extraction of the waste function into a distinct but integrated outlet simplifies the cleaning process and waste management while maintaining the overall simplicity of the replaceable nozzle assembly design
4Manufacturing precision
If the outlet nozzle assembly is designed with multiple conduits for selective delivery, then the manufacturing precision required to achieve proper flow rates is improved, but the device complexity increases
Solution Approach 1:
Each conduit and outlet within the assembly is designed with locally optimized dimensions and flow characteristics tailored to its specific function. The espresso outlet has precisely engineered restrictions for proper crema formation, while the coffee outlet has larger dimensions for higher flow rates, allowing each local region of the assembly to be optimized independently while maintaining overall system simplicity
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
Enables the production of high-quality espresso and other beverages with minimal training and cleaning, accommodating various beverage characteristics by adjusting flow rates and gas/liquid ratios, while maintaining hygiene and ease of use.
Implementation Method 1
one or more conduits arranged to deliver selectably beverage to the first outlet or the second outlet
Implementation Method 2
Air is entrained into the beverage as it is being brewed to produce the desired crema
Data Source
AI summary
A beverage preparation machine configured to dispense a beverage through an outlet nozzle assembly, the machine comprising: an outlet nozzle assembly having provided therethrough a first outlet and a second outlet; and one or more conduits arranged to deliver selectably fluid to the first outlet or the second outlet.