Rotating Atomizer Annular Wall Gap Stabilization
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Solution Overview
Problem
Prior rotary atomizer designs lack a rigidly stabilized connection between the turbine device and the housing, leading to inconsistent surface contact and a variable gap between the shaft and paint line, which affects paint distribution and efficiency.
Innovation Solution
An annular wall extending from the turbine device forms a seat to engage the housing, providing a rigid connection and maintaining a fixed gap between the shaft and paint line, while a biasing device ensures constant surface-to-surface contact with the air shaping ring for improved paint distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid connection between turbine device and housing is implemented, then gap consistency and contact stability are improved, but device complexity increases
Solution Approach 1:
The annular wall is integrated directly into the turbine device structure, merging the connection function with the turbine housing. This eliminates the need for separate connection components while providing rigid stabilization, thus improving gap consistency without significantly increasing overall device complexity.
Solution Approach 2:
The turbine device is segmented into functional zones: the annular wall forms a distinct engagement seat portion that interfaces with the housing, while the remaining turbine structure maintains its rotational function. This segmentation allows the connection structure to be optimized independently for rigidity without affecting the entire device.
2Manufacturing precision
If constant surface contact between turbine device and air shaping ring is ensured, then paint distribution is improved, but friction and wear increase
Solution Approach 1:
A biasing device is introduced that uses pneumatic or elastic force to maintain constant surface contact between the turbine device and air shaping ring. This ensures uniform paint distribution through consistent contact pressure while the biasing mechanism allows the surfaces to self-adjust, reducing friction-induced wear compared to rigid mechanical pressing.
Solution Approach 2:
The contact interface between turbine device and air shaping ring transitions from a static rigid connection to a dynamic biased contact. The biasing device allows for elastic deformation and self-adjustment during operation, maintaining optimal contact pressure for paint distribution while accommodating thermal expansion and operational variations, thereby reducing wear.
Data Source
AI summary
An atomizer assembly (10) drives an atomizing bell (108) to apply paint onto a part (14). The atomizer assembly (10) includes a core (24) having at least one paint line (26) extending therethrough, a turbine device (40) circumscribing an axis (A) and disposed in the core (24), and a turbine unit (62) surrounding the pain line (26) and having a shaft (104) rotatable relative the turbine device (40) with several turbine blades (130) connected to the shaft (104). A plurality of nozzles (64, 66, 68) are defined in the turbine device (40) and are positioned relative a turbine wheel (106) connected to the shaft (104) to drive fluid, i.e. gas onto the turbine blades (130). An annular wall (94) extends outwardly from one of the terminal ends of the turbine device (40) to define a seat (96) for engaging the core (24) to maintain a fixed gap between the paint line (26) and the shaft (104) and to eliminate contact therebetween.