Dual-Nozzle Pneumatic Suction for Flow and Vacuum Switching
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Solution Overview
Problem
Pneumatic suction devices with fixed functional characteristics are not well-suited for various applications, often resulting in under-capacity in depression or flow, limiting their effectiveness in handling different types and consistencies of products.
Innovation Solution
Incorporating a secondary nozzle that can be activated to generate suction with a lower flow rate and higher depression, allowing for adjustable suction parameters by moving between passive and active positions, and using control means to automatically switch between nozzles based on vacuum thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large-sized nozzle is used to increase flow rate, then the volume of displaced air increases, but the depression becomes relatively low
Solution Approach 1:
The single nozzle is segmented into multiple nozzles with different sizes. The system includes a first nozzle and a second nozzle that can be selectively activated. The first nozzle is configured for high flow rate applications, while the second nozzle is configured for high depression applications, allowing the system to segment the functional requirements into separate physical components.
Solution Approach 2:
The system dynamically switches between different nozzle configurations based on operational requirements. A control mechanism enables selective activation of either the first nozzle or the second nozzle, allowing the system to adapt its characteristics in real-time rather than being fixed to a single static configuration.
2Stress or pressure
If a smaller nozzle is used to increase depression, then the suction strength increases, but the flow rate decreases
Solution Approach 1:
The system segments the nozzle functions into two distinct nozzles: a smaller second nozzle optimized for high depression with lower flow rate, and a larger first nozzle optimized for high flow rate with lower depression. This segmentation allows each nozzle to be specially optimized for its specific function rather than compromising both parameters in a single nozzle.
Solution Approach 2:
The control system enables dynamic selection between the first and second nozzles based on the required operational parameters. When high depression is needed, the second nozzle is activated; when high flow rate is needed, the first nozzle is activated, making the system dynamically adaptable to different suction requirements.
3Ease of manufacture
If fixed functional characteristics are used to simplify device structure, then the device becomes easier to manufacture, but the adaptability to different applications is reduced
Solution Approach 1:
The device is segmented into modular nozzle units that can be independently controlled. Each nozzle is a distinct functional module with specific characteristics, allowing the system to maintain relative structural simplicity while gaining versatility through the ability to select between different modules based on application requirements.
Solution Approach 2:
The system achieves multi-functionality by incorporating multiple nozzles with different characteristics within a single device. The control mechanism enables the device to universally handle different suction applications - whether requiring high flow rate or high depression - making one device adaptable to multiple scenarios rather than requiring separate specialized devices.
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
Enables efficient suction of diverse materials by varying flow and depression rates, ensuring effective collection of both high-flow, low-depression substances and high-depression, low-flow substances, while preventing high pressure to safeguard containers.
Implementation Method 1
the expansion of a pressurized gas is used to create a vacuum and, consequently, to generate a phenomenon of aspiration... the compressed air is sent into a nozzle whose internal shape is adapted to generate, by venturi effect, a vacuum upstream of the weakest section of said nozzle
Data Source
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AI summary
A pneumatic suction device (1) intended to be connected to a container (50/50'), comprising a nozzle (10), called the main nozzle, through which the expansion of a compressed gas is able to generate, by reaction, suction having a given flow rate and suction rate, said device comprising a secondary nozzle (20) through which the expansion of compressed gas is able to generate, by reaction, suction having a respectively lower flow rate and greater suction rate than the flow rate and suction rate obtained with the main nozzle, wherein the secondary nozzle is mounted such that it can be displaced axially with respect to the main nozzle, between a passive position, in which the effective expansion of the compressed gas takes place through the main nozzle, and an active position, in which the effective expansion of the compressed gas takes place through said secondary nozzle, wherein the device has control means (40) for determining the suction rate generated and able to control the displacement means (30) of the secondary nozzle, wherein said device includes detection means which enable it to know to which type of container it is connected and to implement the appropriate type of suction, in order to secure operation.