Dual Flow Metering in Milk Texturing for Accurate Cup Fill
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Solution Overview
Problem
There is a need for an improved apparatus that can consistently texture and dispense milk for coffee drinks, as existing methods rely heavily on the skill and diligence of baristas, leading to variability in milk quality.
Innovation Solution
A milk texturing and dispensing assembly that includes a milk inlet arrangement, a heater, a milk pump, and a controller connected to sensors and a controllable milk line cleaning water source, allowing for precise control of milk texture and dispensing based on container qualities and line cleaning, with an aeration assembly to introduce air and adjust milk volume accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual milk texturing by barista is used, then flexibility in operation is maintained, but consistency and reliability of milk quality deteriorates
Solution Approach 1:
The system performs self-diagnosis and self-cleaning operations automatically. The controller monitors milk flow rates, temperature, and aeration levels, then autonomously adjusts pump speed, heater power, and air intake to maintain consistent milk texture without human intervention.
Solution Approach 2:
Flow meters upstream and downstream of the aeration assembly provide continuous feedback to the controller about milk volume and aeration effectiveness. The controller uses this feedback to dynamically adjust the aeration assembly operation, ensuring consistent milk quality regardless of variations in milk flow or container characteristics.
2Reliability
If automated control systems are added to improve milk quality consistency, then reliability improves, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it monitors flow meters, regulates the milk pump, controls the heater, manages the aeration assembly, and operates the milk line cleaning system. This multi-functionality consolidates control logic into a single device, reducing overall system complexity while maintaining high reliability through automated consistency.
Solution Approach 2:
The milk texturing function combines heating, pumping, and aeration into a single integrated process controlled by one controller. The flow meters upstream and downstream work together with the aeration assembly to provide combined feedback for automated adjustment, merging multiple control elements into a unified system that improves reliability without proportionally increasing complexity.
3Productivity
If continuous operation without cleaning is maintained, then productivity is high, but harmful factors from milk residue accumulate
Solution Approach 1:
The system performs preliminary cleaning actions by diverting water through the milk lines during or after operation. The controllable milk line cleaning water source is positioned to flush conduits before contamination becomes severe, preventing harmful buildup while allowing continuous productivity through quick cleaning cycles.
Solution Approach 2:
The cleaning system operates continuously or periodically without significant interruption to productivity. The controller manages cleaning cycles that can run concurrently with or immediately following milk dispensing, maintaining continuous useful action by ensuring milk lines remain clean while minimizing downtime for the overall system.
4Manufacturing precision
If aeration assembly is added to control milk volume and texture, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The aeration assembly is controlled by feedback from flow meters positioned upstream and downstream. The controller compares the measured milk volumes with target values and automatically adjusts the aeration assembly operation to achieve precise milk volume control and consistent texture, improving manufacturing precision through automated feedback regulation.
Solution Approach 2:
The system replaces manual mechanical adjustment of milk flow and aeration with an automated electronic control system. The controller electronically regulates the milk pump speed and aeration assembly operation based on flow meter feedback, substituting precise electronic control for manual mechanical adjustment and achieving higher manufacturing precision with simplified operation.
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 assembly ensures consistent milk texture and dispensing, reducing variability and improving efficiency by using sensors and a controller to adjust heating, pumping, and aeration based on container conditions and line cleanliness, thus enhancing the quality and reliability of milk preparation.
Implementation Method 1
a heater for heating the milk
Implementation Method 2
an aeration assembly to introduce air into the milk, wherein the aeration assembly is coupled to a controller for control thereby
Implementation Method 3
a milk pump in fluid communication with the milk inlet arrangement and the heater and arranged to progress milk from the milk inlet arrangement through the heater
Data Source
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AI summary
A milk texturing and dispensing assembly includes a milk pump in fluid communication with a milk inlet arrangement and an outlet for dispensing milk into a container. The milk pump operates to progress milk from the milk inlet arrangement to the outlet. An aeration assembly is provided to introduce air into the milk. The aeration assembly is coupled to a controller which controls the aeration assembly. A first flow meter is provided that is arranged to sense a first milk volume per unit of time upstream of the aeration assembly and a second flow meter arranged to sense a second milk volume per unit of time downstream of the aeration assembly. The controller is configured to operate the aeration assembly taking into account the first milk volume per unit of time and the second milk volume per unit of time. The controller may be configured to determine an increase in volume of the milk due to aeration. Consequently, the controller may operate the milk pump to dispense a volume of milk from the outlet corresponding to a volume of the container, so that the container can be accurately filled.