Coanda-Assisted Spray Manipulation

Utah State University
posted on 08/27/2008

Utah State University is seeking companies interested in commercializing a novel device to improve the application of thermal sprays to irregular surfaces and inside pipes and bores while protecting the surface from heat. Thermal spray coatings extend the life of products in a wide variety of industries, including aerospace, turbine engines, diesel engines, oil, electronics, textile, automotive, pump, marine, printing, gage, machine repair, and process. The market for thermal spray powders and equipment is nearly $1 billion and nearly $2.5 billion including thermal spray applicators.

Suggested Uses

• Coating deposition for internal diameters
• Coating deposition for complex geometries
• Modifying profile and position of fuel spray in combustion engines

Advantages

• CSM modifies and controls spray flow direction and shape, allowing thermal sprays to be applied to the inside of pipes and bores
• Able to coat large surfaces with a single nozzle and without translational movement, providing more flexibility for difficult geometries
• The device can move the flame, mitigating undesirable heating in thermal sprays

Innovation Details

Detailed Description

Coanda-Assisted Spray Manipulation (CSM) is a technique that utilizes a control flow to vector and spatially expand a high-speed jet or spray at high frequency. The control flow can be applied at any circumferential position, thus the primary flow can be precisely positioned without traversing the nozzle or target piece. CSM has the ability to accurately apply films on large surfaces with a single nozzle and no moving parts in or near the jet or spray flow, enabling long-term operation in high temperature, corrosive, or combustive environments.

File Number: W05036

Web site: http://tco.usu.edu/

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