Pumping and foaming device
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Solution Overview
Problem
Existing devices for producing high-quality fluid foams, such as milk foam, face challenges in achieving quick, repeatable, and clean production with precise control over foam quality and stability, often requiring complex configurations and time-consuming cleaning processes.
Innovation Solution
A pumping and foaming device with a processing compartment featuring a movable and static part that applies shear stress to a mixture of air and fluid, allowing for efficient foaming through a Couette flow mechanism, which is compact, easy to use, and disposable, eliminating the need for cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotating whisk is used to foam milk by agitation, then foam can be produced, but the process requires time, multiple manipulations, and time-consuming cleaning
Solution Approach 1:
The patent employs a disposable foaming cartridge containing the foaming chamber and mixing elements. After use, the entire cartridge is discarded, eliminating cleaning requirements. This resolves the contradiction by sacrificing the reusability of the foaming component to achieve rapid, clean operation without manual intervention for maintenance.
2Manufacturing precision
If a rotating whisk geometry is controlled to regulate foam characteristics, then foam quality can be adjusted, but the control becomes complex and repeatability is difficult to achieve
Solution Approach 1:
The patent segments the foaming function into a pre-manufactured cartridge with fixed internal geometry (mixing chamber, nozzle configuration). This standardization allows precise foam characteristics to be built into the cartridge design itself, eliminating the need for complex real-time geometric control during operation and ensuring repeatable results across multiple uses.
Solution Approach 2:
The patent controls foam characteristics by changing physical parameters such as pressure differential across the nozzle, liquid flow rate, and air intake volume, rather than adjusting complex whisk geometries. These parameters can be precisely controlled through simple mechanical means (springs, orifices, valves) during the foaming process, achieving manufacturing precision without device complexity.
3Productivity
If pressurized gas and complex mixing arrangements are used, then foam can be produced, but the system becomes complicated and requires cleaning
Solution Approach 1:
The patent merges the liquid storage, air mixing, pressurization, and foaming delivery functions into a single integrated disposable cartridge. This consolidation eliminates the need for separate mixing chambers, valves, and piping that would require cleaning and complex assembly, while still achieving the desired foam production capability through the integrated design of internal passages and the nozzle.
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 device produces high-quality foam with adjustable texture and thickness, ensuring quick and stable foam settling, and provides repeatability across different fluid types, with the ability to produce both hot and cold foams, while maintaining a clean operation and reducing user complexity.
Implementation Method 1
relative movement pumps air and fluid by suction from the air entry (13) and from the container compartment (20) respectively into the processing compartment (10), and also drives the pumped mixture of air and fluid under certain level of shear stress which allows this mixture to foam
Implementation Method 2
A pumping and foaming device with a processing compartment featuring a movable and static part that applies shear stress to a mixture of air and fluid, allowing for efficient foaming through a Couette flow mechanism
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
Pumping and foaming device (100) comprising a container compartment (20) where a foamable fluid (1) is stored, an air entry(13) through which air is provided into the device (100) and a processing compartment (10) where fluid is pumped and foamed with air, the processing compartment (10) comprising at least one movable part and a static part, movable with respect to each other; said parts being arranged in such a way that their relative movement pumps fluid by suction from the container compartment (20) respectively into the processing compartment (10), and also drives the mixture of air and fluid through a thin gap providing a certain level of shear stress which allows this mixture to foam.