Externally Mixing Nozzle for Uniform Fluid Blending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid mixing nozzles struggle to achieve uniform mixing of fluids with different viscosities and volumetric flows, often subjecting biological materials to high stress, leading to inadequate mixing quality and potential nozzle blocking.
Innovation Solution
An externally mixing nozzle design with adjustable outlet and inlet channels, allowing for controlled flow speeds and gentle mixing of fluids outside the nozzle, featuring coaxial or lateral supply of fluids to minimize stress and prevent nozzle blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fluids are mixed inside the nozzle using vortex chambers, then mixing occurs within the device, but high stresses are applied to the fluids which damages biological material
Solution Approach 1:
The mixing process is extracted from the nozzle interior and relocated to the exterior environment. The nozzle design allows fluids to exit through separate outlet channels and mix in the surrounding space, eliminating the harmful vortex-induced stresses that would otherwise occur within the nozzle chambers.
Solution Approach 2:
Instead of mixing fluids inside the nozzle as in conventional designs, this invention inverts the approach by having fluids exit separately and mix outside the nozzle. The mixing location is reversed from the traditional internal mixing chamber configuration to an external mixing zone.
2Quantity of substance
If conventional nozzles mix fluids with different viscosities and volumetric flows, then mixing occurs, but the mixing uniformity is insufficient
Solution Approach 1:
The nozzle design incorporates locally optimized outlet channels with specific geometric characteristics tailored to each fluid type. Each outlet channel has dimensions and flow characteristics adapted to the specific viscosity and flow rate of the fluid it carries, ensuring that both fluids arrive at the mixing zone with optimized local flow properties that facilitate uniform mixing.
Solution Approach 2:
The invention utilizes different geometric parameters for the outlet channels, including diameter, length, and orientation angles, to control the flow characteristics of each fluid. By adjusting these parameters, the system optimizes the velocity and direction of each fluid stream to achieve uniform mixing despite differences in viscosity and volumetric flow rates.
3Quantity of substance
If outlet channels are arranged spaced apart to form overlapping fluid cones, then mixing occurs outside the nozzle, but the mixing quality is insufficient
Solution Approach 1:
The invention transitions from a simple planar arrangement of outlet channels to a three-dimensional configuration where outlet channels are oriented at different angles and positions. This spatial arrangement creates overlapping conical fluid streams that intersect in a controlled manner, enhancing mixing quality by utilizing volumetric space rather than just a two-dimensional plane.
Solution Approach 2:
The outlet channels are designed with adjustable or optimized orientation angles that allow dynamic control over the fluid cone overlap. By adjusting the angular parameters of the outlet channels, the system can optimize the intersection pattern of the fluid streams to achieve superior mixing quality for different fluid combinations and flow conditions.
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
Ensures uniform and gentle mixing of fluids with different viscosities and volumetric flows, preventing nozzle blocking and protecting sensitive biological materials by adjusting flow speeds and minimizing shear forces.
Implementation Method 1
at least one of the fluids to be mixed exits in a conical jet out of the nozzle... the two outlet openings of the known nozzle are arranged spaced apart from one another in such a manner that the two rotating fluid cones overlap so that a mixing of the two fluids takes place outside the nozzle
Implementation Method 2
two vortex chambers are provided into which in each case an outlet channel discharges. Rotational movement of two different fluids is brought about via the vortex chambers before the fluids leave the nozzle via the outlet channels. Due to the vortex applied in advance to the fluids, a rotating spray jet is produced.
Data Source
AI summary
The invention relates to a method for mixing at least two fluids using an externally mixing nozzle for medical purposes, which has at least two outlet channels (10, 20) and at least two inlet openings (13, 23) with different or identical cross-sections, wherein two fluids with different volumetric flows and/or different viscosity are sprayed, and wherein the ratio of the cross-sections of the inlet channels (13, 23) and/or the outlet channels (10, 20) corresponds to the ratio of the volumetric flows so that the fluids flow with substantially identical flow speeds through the outlet channels (10, 20) and/or the inlet openings (13, 23). The invention furthermore relates to an externally mixing nozzle, a medical instrument and a medical device for spraying substances, in particular biological material.