Angled Nozzle Airflow for Low-Pressure Hand-Pump Operation
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Solution Overview
Problem
Existing airbrush pumps require high pressure to achieve sufficient airflow, making them difficult for young children to operate and resulting in an ungainly, impractical design due to the minimum size limitations.
Innovation Solution
A nozzle with an angled opening, specifically inclined between 20 and 60 degrees, is used to increase airflow at lower pressures, allowing for a smaller, more practical hand-pump design suitable for children.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional nozzle with straight opening is used, then sufficient airflow can be achieved, but high pressure is required making the hand-pump large and difficult for children to operate
Solution Approach 1:
The nozzle opening angle is changed from conventional (smaller) to a specific range of 20-60 degrees. This parameter change optimizes the airflow characteristics, allowing sufficient air流量 to pass through at lower pressures, thus enabling smaller hand-pump size that children can operate easily.
2Quantity of substance
If high pressure is used to achieve sufficient airflow, then the desired dispensing effect is obtained, but the hand-pump size must be large
Solution Approach 1:
By optimizing the nozzle opening angle to 20-60 degrees, the airflow efficiency is improved. This allows the same airflow quantity to be achieved at lower pressure, which reduces the size requirements for the hand-pump while maintaining the desired dispensing effect.
3Ease of operation
If the hand-pump is made small for ease of operation by children, then it becomes more user-friendly, but insufficient airflow is generated at the required pressure
Solution Approach 1:
The nozzle opening angle is optimized to 20-60 degrees to maximize airflow efficiency. This parameter change compensates for the reduced pumping capacity of smaller hand-pumps, ensuring that sufficient airflow is generated even with the lower force that children can apply.
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 angled nozzle design enables effective airflow at reduced pressures, enabling smaller and more user-friendly airbrush pumps that can be easily operated by children while maintaining the desired dispensing effect.
Implementation Method 1
The apertured end of the second nozzle 24 overlaps the end of the first nozzle 22 and has an incline 30 to increase the air flow through the nozzle and over the nib 32 during use.
Data Source
Figure 1
AI summary
An airbrush having a nozzle (22) through which gas can flow, the end of the nozzle having an inclined surface (30). The apparatus also includes support means for a liquid source (28) which, in use, is directed towards the inclined surface of the nozzle.