Aerosol Ejection Member Slit Nozzle Design
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Solution Overview
Problem
Existing ejection members for aerosol containers fail to produce foaming content with high design properties due to adhesion issues between ejected materials, making it difficult to achieve desired shapes.
Innovation Solution
The ejection member features a tapered slit portion, inclined nozzle tip, and spirally arranged nozzles of varying heights with a curved ejection port, along with a baffle and expansion chamber design to minimize adhesion and enhance shape retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a plurality of ejection holes are provided in the ejection member to create high design properties, then the design properties of the ejection material are improved, but adhesion occurs between the ejection materials ejected from the respective ejection holes making it difficult to obtain the desired shape
Solution Approach 1:
The ejection member is divided into multiple independent nozzles (ejection holes), each capable of ejecting foam separately. This segmentation allows complex shapes to be formed by combining multiple simpler foam elements, resolving the contradiction between design complexity and shape retention.
Solution Approach 2:
A baffle is introduced as an intermediary element between the expansion chamber and the nozzles. The baffle with its specific opening configuration controls and directs the foam flow to each nozzle, preventing direct interaction and adhesion between foam streams from different nozzles while maintaining desired shape.
2Shape
If the nozzles are arranged closely to form compact shapes, then the design properties are improved, but adhesion between ejection materials increases
Solution Approach 1:
The nozzles are arranged in a three-dimensional configuration with varying heights and angles rather than a simple planar arrangement. This spatial distribution in multiple dimensions allows compact overall shape while maintaining sufficient separation between individual foam streams to prevent adhesion.
Solution Approach 2:
The baffle and nozzle arrangements incorporate curved and angled surfaces that guide foam flow along specific trajectories. The curved ejection ports and inclined nozzle surfaces direct foam away from adjacent nozzles, using geometric curvature to prevent contact between foam streams.
Data Source
AI summary
Provided are an ejection member and an aerosol product using the same capable of obtaining a desired shape of an ejection material by suppressing adhesion of the ejection ejection materials to each other. An ejection member 20 to be connected to an aerosol container 10 filled with a foaming content is provided with an expansion chamber E for promoting foaming of the foaming content from the aerosol container 10 and a plurality of nozzles 22c for ejecting the foaming content in the expansion chamber E to the outside. The expansion chamber E is provided with an introduction port 21e for introducing the foaming content from the aerosol container 10 and a delivery port 22b for delivering the foaming content to the nozzle 22c side. The nozzles 22c each have a slit-shaped ejection port 22d. The communication path that communicates the ejection port 22d and the delivery port 22b has a slit-shaped slit portion 22e. A length L1 of the slit portion 22e in the ejection direction is greater than a slit width W1 of the ejection port 22d.