Laminar Flow Nozzle Structure for Uniform Processing of Complex Surfaces
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Solution Overview
Problem
The existing blow process is inefficient for complex shapes due to increased air consumption and difficulty in adjusting air flow, leading to unstable processing and reattachment of removed materials, as it often generates turbulent flow and fails to achieve uniform processing.
Innovation Solution
A nozzle structure with a laminar flow path between an inner and outer member allows fluid to flow continuously and uniformly along the surface of the inner member, enabling efficient processing with a small fluid amount, even on complex shapes, by using a fluid inlet and outlet to manage the flow and adjusting the cross-sectional area for enhanced processing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If air is blown from a large number of nozzles to process complex shapes, then processing coverage is improved, but air consumption increases and adjustment becomes difficult
Solution Approach 1:
The processing system is segmented into multiple nozzle units, each capable of independent operation. This allows the processing coverage to be divided into multiple zones, each handled by a single nozzle, thereby maintaining comprehensive coverage while reducing the air consumption per nozzle and simplifying adjustment.
Solution Approach 2:
The nozzle structure incorporates a circumferential direction dimension, with multiple gas outlets arranged around the inner member. This spatial arrangement enables comprehensive surface coverage through radial distribution of gas flow, allowing each outlet to handle a specific angular sector with reduced air consumption while maintaining overall coverage.
2Area of stationary object
If air is blown from a large number of nozzles to process complex shapes, then processing coverage is improved, but processing stability deteriorates
Solution Approach 1:
By segmenting the processing system into independent nozzle units with individual gas outlets, each unit can be precisely controlled and adjusted separately. This segmentation improves processing stability by allowing fine-tuned control of gas flow parameters for each zone while maintaining comprehensive coverage through the combined action of all units.
3Device complexity
If air is simply blown onto the surface of the member, then the mechanism is simple, but turbulent flow is generated causing reattachment
Solution Approach 1:
The gas outlets are arranged in an annular configuration around the inner member, creating a radially symmetric flow pattern. This curved, circumferential arrangement guides the gas flow to follow the contours of the inner member surface, promoting laminar flow and preventing turbulent eddies that would cause reattachment, while maintaining relative mechanical simplicity.
Solution Approach 2:
The invention utilizes pneumatic principles by controlling gas flow through precisely designed outlets to create a laminar flow regime. The gas is introduced in a controlled manner through the annular outlets, generating a smooth, layered flow pattern that adheres to the surface without creating turbulence, thereby eliminating reattachment while keeping the pneumatic mechanism relatively simple.
4Device complexity
If air is simply blown onto the surface of the member, then the mechanism is simple, but processing uniformity deteriorates
Solution Approach 1:
The annular arrangement of gas outlets creates a radially symmetric flow distribution that ensures uniform processing across the entire surface of the inner member. The curved, circumferential configuration of outlets provides equal spacing and consistent flow angles around the perimeter, achieving processing uniformity while maintaining relatively simple mechanical construction.
Solution Approach 2:
The gas outlets are positioned at specific locations in the annular direction to provide locally optimized flow characteristics for different zones of the inner member surface. This local quality approach ensures that each region receives appropriately directed gas flow, achieving overall processing uniformity across complex shapes while keeping the outlet configuration relatively simple.
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 configuration enables uniform and wide-range processing, effectively removing contaminants and performing cleaning, drying, and cooling tasks on complex surfaces with reduced fluid consumption and turbulence, resulting in high-quality processed components.
Implementation Method 1
a laminar flow path formed between an outer surface of the inner member and an inner surface of the outer member to allow fluid to flow... a continuous high-speed laminar flow with no unevenness in almost the entire area near the surface of the inner member can be generated uniformly
Data Source
AI summary
Provided is a nozzle structure, a blow device, and a manufacturing method for parts, a bearing, a linear motion device, a steering device, a vehicle, and a mechanical device which can uniformly and satisfactorily perform various processes with fluid over a wide range on a processing target member. The nozzle structure includes an inner member, an outer member surrounding the inner member, and a laminar flow path formed between an outer surface of the inner member and an inner surface of the outer member to allow fluid to flow. The blow device or the mechanical device having the nozzle structure can process the inner member by flowing the fluid in the flow path.