Spray Nozzle Insertion Body With Segmented Spot Jets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spray nozzle arrangements struggle to effectively wet large areas on surfaces, such as vehicle windshields, under unfavorable fluid-mechanical conditions like low temperatures or high relative speeds, where wind pressure disrupts the fan jet's formation and distribution.
Innovation Solution
The insert body incorporates a point jet generating section with two point jet channels connected to the insert inlet channel, which expands into a collection space, allowing for the generation of additional spot jets that can reliably wet surfaces even when the fan jet is disrupted by adverse conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a fan jet generating section is used to wet large areas, then the coverage area is improved, but under unfavorable fluid-mechanical boundary conditions (low temperature or high relative speed), the fan jet does not form or is pushed away by wind pressure
Solution Approach 1:
The spray nozzle arrangement divides the single fan jet into multiple smaller spot jets arranged in parallel. Each spot jet channel (31, 32) is independently connected to the inlet channel (16) via collection spaces (21, 30), creating segmented liquid streams that are more resistant to wind pressure disruption while collectively covering a large area.
Solution Approach 2:
The invention changes the physical parameters of the liquid jet by transitioning from a single large-diameter fan jet to multiple small-diameter spot jets. This parameter change increases the number of jets while reducing individual jet diameter, making them less susceptible to wind pressure effects while maintaining overall coverage area.
2Device complexity
If a single fan jet is used, then the structure is simple, but under high wind pressure the jet is pushed away and cannot maintain coverage
Solution Approach 1:
The single fan jet structure is segmented into multiple spot jets (at least two) that are arranged in parallel. This segmentation increases structural complexity but provides resistance against wind pressure through distributed jet patterns, where individual jets are less vulnerable to being pushed away entirely.
Solution Approach 2:
The collection spaces (21, 30) act as cushioning chambers that accumulate liquid before distribution to the spot jet channels. This beforehand accumulation ensures that sufficient liquid is available to maintain jet formation and coverage even when wind pressure attempts to disrupt the jets during operation.
3Reliability
If spot jets are added to the fan jet system, then reliability under unfavorable conditions is improved, but the device complexity increases
Solution Approach 1:
The invention merges the fan jet generating section and spot jet generating section into a single integrated insert body (10). Both sections share a common inlet channel (16) and are combined within one modular component that fits into the nozzle head (9), reducing overall system complexity compared to separate systems while maintaining the reliability benefits of multiple jet types.
Solution Approach 2:
The insert body (10) is designed as a multi-functional component that can generate both fan jets and spot jets simultaneously. This universal design allows a single device to adapt to different operating conditions, providing reliable surface wetting across various temperatures and speeds without requiring multiple separate nozzle assemblies.
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
This design ensures reliable surface wetting over a large area by generating two spot jets that can counteract wind pressure and maintain coverage, even under unfavorable conditions.
Implementation Method 1
an insert inlet channel (16) that opens into an antechamber (20) of a fan jet generating section (17) and into a collection space (30) of a point jet generating section (18)
Implementation Method 2
a fan jet generating section (17) that can be charged with liquid via the insert inlet channel (16) and is set up to generate an oscillating fan jet (4)
Implementation Method 3
which can discharge liquid in the direction of the fan jet via two point jet channels (31, 32) that adjoin an expanding collection space (30)
Implementation Method 4
two point jet channels (31, 32), which open into the collection space (30) and lead to two spot jet outlet openings (13, 14)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An insertion body (10) for a spray nozzle assembly (1) has a fan jet producer section (17) for producing an oscillating, large area fan jet and a point jet producing section (18) for producing at least one point jet lying in the wetting area of the fan jet. It can thereby be ensured that if the fan jet collapses or is pushed aside, the surface is wetted at least by the point jet, or each point jet, the positioning of which is substantially uncritical with respect to fluid mechanics.