Atomization Nozzle With Varying Cross-Section Rotation Channel
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Solution Overview
Problem
Existing nozzles for atomizing liquids achieve only a minimum droplet size, which can lead to suboptimal effectiveness in applications like air conditioning and fire protection, particularly when filtering out dust and dirt particles.
Innovation Solution
A nozzle design featuring a rotation chamber with a decreasing cross-section, where the liquid is guided onto a rotation base to form a rotating fluid disk, promoting turbulence-free movement and higher rotational speeds, resulting in a conical distribution of finer spray mist droplets even under low water line pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the liquid is introduced tangentially into a rotation chamber with constant cross-section rotation channels, then the liquid rotates at a moderate speed, but the droplet size cannot be reduced further
Solution Approach 1:
The rotation channel cross-section is varied along its length, being larger at the inlet and smaller at the outlet. This parameter change accelerates the liquid as it moves through the channel, increasing rotation speed and reducing droplet size beyond what constant cross-section channels can achieve
Solution Approach 2:
The rotation channel is designed with a three-dimensional varying cross-section rather than a uniform two-dimensional profile. This dimensional variation allows continuous acceleration of the liquid in the radial direction, maximizing rotation speed and minimizing droplet size
2Ease of manufacture
If the rotation channel cross-section is constant, then the structure is simple, but the liquid cannot achieve high rotation speed for fine misting
Solution Approach 1:
The rotation channel cross-sectional dimensions are systematically varied along its length, creating a gradient that accelerates the liquid flow. This parameter variation, while adding some manufacturing complexity, enables high rotation speeds and fine misting that constant cross-section designs cannot achieve
3Device complexity
If the liquid enters the rotation chamber directly without guidance, then the structure is simpler, but friction losses increase and rotational movement becomes turbulent
Solution Approach 1:
A rotation base is introduced as an intermediary element that receives the liquid from the rotation channel and guides it onto the rotation path. This intermediary structure ensures smooth, turbulence-free entry and reduces friction losses by optimizing the liquid's contact with the rotation chamber walls
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 achieves a significantly finer misting of water with higher rotational speeds, enhancing the nozzle's effectiveness in air conditioning and fire protection by filtering out particles and minimizing water damage.
Implementation Method 1
a cross section of the rotation channel decreases from the outside inward in the direction of the rotation chamber
Implementation Method 2
the liquid is guided onto a rotation base of the rotation chamber... the rotation channel opening into the rotation chamber is directed on the one hand with a component counter to the nozzle exit direction and on the other hand towards a basis of rotation
Implementation Method 3
Within the water column, the molecules are subjected to lower frictional resistance than in the contact area between the water column and the wall of the rotation chamber. As a result, a greater rotational speed can be set within the water column than at the edge of the water column
Implementation Method 4
a conical distribution of the spray mist with significantly smaller droplet sizes is created at the nozzle opening
Implementation Method 5
the liquid has a movement component directed opposite to the nozzle exit direction... the liquid is made to rotate before it is nebulized
Data Source
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AI summary
The nozzle (26) has a rotation chamber (37) arranged upstream to a nozzle opening, and a rotation channel (35) tangentially discharging into the rotation chamber, where the rotation channel displaces the liquid in rotation movement that is coaxial to the nozzle opening. The liquid is discharged into the rotation chamber by movement components that are aligned opposite to a nozzle discharging direction. The rotation channel has a cross-section, which reduces from outside to inside in the direction of the rotation chamber.