Dispensing Head with Concentric Chambers for Spray Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dispensing heads for pressurized cosmetic and care products are costly due to the use of attached nozzles with swirl ducts, which complicate manufacturing and do not provide optimal spray characteristics.
Innovation Solution
A dispensing head design featuring a body with a supply channel and a diffuser that includes concentric chambers and a separation skirt with offset openings, allowing the product to be sprayed in multiple directions, reducing droplet size, and eliminating the need for attached nozzles by creating turbulence and pressure drop within the diffuser.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If attached nozzles with swirl ducts are used in dispensing heads, then spray characteristics can be improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent removes the attached nozzle component entirely and extracts only the essential spray-generating function, implementing it directly through the diffuser's internal geometry (concentric chambers and offset openings) without requiring separate nozzle assemblies
Solution Approach 2:
The patent merges the nozzle function with the diffuser body by integrating the spray-generating mechanism (concentric chambers with offset openings) directly into the diffuser structure, eliminating the need for separate attached nozzles
2Reliability
If attached nozzles with swirl ducts are used, then spray performance can be enhanced, but manufacturing cost increases
Solution Approach 1:
The patent eliminates the expensive attached nozzle component and extracts only the necessary spray-generating function, implementing it through simpler internal diffuser geometry that is more cost-effective to manufacture
Solution Approach 2:
The patent replaces expensive, complex attached nozzles with a simpler, integrated diffuser design that achieves comparable spray performance at lower manufacturing cost, effectively using a more economical structure for the dispensing function
3Area of stationary object
If product is sprayed in multiple directions through offset openings, then delivery coverage is improved, but droplet size control becomes more challenging
Solution Approach 1:
The patent applies different geometric characteristics to different regions of the diffuser: the concentric chambers provide overall flow distribution while the offset openings in the separation skirt create localized turbulence and directional spray patterns, with each region optimized for its specific function
Solution Approach 2:
The patent uses curved flow paths through concentric chambers and angled offset openings to redirect product flow multiple times, creating turbulence that breaks up droplets into finer sprays while maintaining control over droplet size through optimized curvature radii
4Reliability
If turbulence is created in the diffuser to reduce droplet size, then spray quality improves, but pressure drop increases affecting application comfort
Solution Approach 1:
The patent creates turbulence partially through the concentric chambers and offset openings rather than through extreme measures, generating sufficient droplet breakup for quality spray while maintaining pressure within comfortable application ranges by optimizing the degree of flow redirection
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 design enables targeted and efficient delivery of products, such as powders, to hair roots and scalp areas, preventing orifice blockage while simplifying manufacturing and improving spray quality and comfort of application.
Implementation Method 1
The changes of direction of the flow of product in the diffuser permit the creation of turbulence in the flow of product, thereby helping to reduce the size of the droplets or blobs of product
Implementation Method 2
It is possible to obtain a gentler jet and to create a drop in pressure that promotes the comfort of the application
Data Source
AI summary
The present invention relates to a device for spraying a product, in particular a cosmetic product, makeup product or care product, said device comprising:a container containing the product, anda dispensing head (3) comprising a body (5), and an endpiece, in particular a diffuser (7), attached to the body,the body and the endpiece (7) being configured to allow the product to be sprayed through outlet orifices about a longitudinal axis (Y) of the endpiece, in particular in at least two different directions, which are in particular diametrically opposite,the dispensing head (3) comprising at least first (15) and second (16) chambers, in particular concentric chambers, through which the flow of product successively passes before emerging from the outlet orifices, at least one opening between the first and second concentric chambers being able to be offset angularly with respect to at least one of the outlet orifices.