Static Mixer Cartridge Flow Path for Non-Drip Hair Color Dispensing
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Solution Overview
Problem
Existing hair coloring systems face challenges in delivering formulations with varying rheological characteristics, leading to issues such as dripping or uneven application due to differences in dye load and viscosity, complicating the delivery process.
Innovation Solution
A formulation delivery system with a first and second liquid formulation source, a mixing chamber, and a nozzle assembly, which mixes and dispenses a 1:1 ratio of dye and developer components with a viscosity of at least 2.0 Pa-s, using a static mixer and optimized flow-path design to ensure consistent application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a common formulation delivery device is used for different dye load formulations, then device simplicity is maintained, but formulation delivery reliability deteriorates due to dripping or bead formation from varying viscosities
Solution Approach 1:
The system dynamically adjusts dispensing parameters including flow rate, pressure, and nozzle configuration based on the detected formulation viscosity and dye load. This allows a single device to reliably dispense various formulations without dripping or bead formation by adapting its operation to match the specific rheological characteristics of each formulation.
Solution Approach 2:
The system changes physical parameters such as flow rate, pressure, and nozzle opening size according to the formulation's viscosity and dye load. By adjusting these parameters dynamically, the device maintains reliable dispensing performance across different formulation types while avoiding the need for multiple specialized devices.
2Productivity
If low viscosity formulations are dispensed, then formulation flow rate is improved, but formulation delivery reliability deteriorates due to dripping
Solution Approach 1:
The system incorporates sensors to detect formulation viscosity and dye load in real-time, then uses this feedback to automatically adjust dispensing parameters. This feedback mechanism ensures that low viscosity formulations are dispensed at appropriate flow rates without dripping, while maintaining reliable delivery across all formulation types.
Solution Approach 2:
The dispensing system dynamically adjusts flow rate and pressure based on the formulation's viscosity characteristics. For low viscosity formulations, the system increases flow rate to improve productivity while simultaneously adjusting pressure and nozzle parameters to prevent dripping, thus maintaining reliability.
3Reliability
If high viscosity formulations are dispensed, then formulation delivery reliability is improved by preventing dripping, but formulation flow rate deteriorates due to bead formation
Solution Approach 1:
The system adjusts dispensing parameters including pressure, flow rate, and nozzle configuration to match high viscosity formulations. By increasing pressure and optimizing flow rate parameters, the system maintains reliable dispensing (preventing dripping) while improving flow rate to prevent bead formation, thus resolving the contradiction between reliability and productivity.
Solution Approach 2:
The system dynamically adapts its dispensing characteristics to the formulation's viscosity. For high viscosity formulations, it adjusts pressure and flow rate parameters to ensure reliable delivery without dripping, while simultaneously optimizing to prevent bead formation and maintain adequate flow rate for productivity.
4Reliability
If manual mixing is used to compensate for varying rheological performance, then formulation delivery reliability is improved, but operation complexity increases
Solution Approach 1:
The system performs self-adjustment by automatically detecting formulation viscosity and dye load, then autonomously optimizing dispensing parameters. This eliminates the need for manual mixing and adjustment by the user, maintaining reliable formulation delivery while simplifying operation to a single button press or automated sequence.
Solution Approach 2:
The system uses sensors to detect formulation characteristics and automatically adjusts dispensing parameters without user intervention. This feedback mechanism maintains reliable delivery across different formulations while keeping the user interface simple, removing the complexity of manual mixing and adjustment.
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 system provides a reliable and sustainable method for delivering hair coloring formulations with improved user experience and adherence to hair, minimizing dripping and ensuring even coverage.
Implementation Method 1
a mixing chamber connected with the first fluid conduit and the second fluid conduit, wherein the mixing chamber mixes the first formulation with the second formulation into a mixed formulation having a 1:1 mixture ratio of the first formulation and the second formulation
Implementation Method 2
a pump fluidically connected to the first fluid conduit and second fluid conduit
Implementation Method 3
a nozzle assembly in fluid connection with the mixing chamber
Data Source
AI summary
Formulation delivery systems, formulation delivery devices, and formulation cartridges for the same are provided. Formulation delivery systems include a reusable handle, a formulation dispensing assembly, and a controller. The formulation dispensing assembly includes a reciprocating nozzle assembly and a pump. The reciprocating nozzle assembly is fluidically-coupleable to the formulation cartridge or the cleaning cartridge received within the reusable handle. Formulation delivery devices include a reusable handle configured to receive a formulation cartridge therein, and a formulation dispensing assembly disposed in the reusable handle. The formulation dispensing assembly includes fluid conduits, a pump fluidically connected to the fluid conduits, a reciprocating nozzle assembly, and a controller. Formulation cartridges include a reusable cartridge body and a formulation cartridge refill unit.