Strengths of Custom Manufacturing

Our nozzles are fully order made.
If using ready‐made nozzles from our catalogs, minor trouble may occur depending on the operating environment, application, or equipment.
With fully order made nozzles, we can design and manufacture nozzles tailored to our customers’ applications, problems, desired benefits, operating environment, and equipment status.We offer a comprehensive solution up to providing customers with evaluation and testing data, and helping our customers optimize nozzle adoption, resolve problems, and get the most from our nozzles.

Evaluation & Testing

At OHMURA, we carry out in-house evaluation and testing of our custom-made nozzles.
 

[Test case] Liquid concentration distribution on the cross section 120 mm below the spray hole
Measurement with CT-LDSA (computed tomography)

[Particle size distribution measurement results]

■Typical atomized particle size measuring equipment

Patternator test equipment

Atomized particle size measuring equipment

Atomized particle size measuring equipment (atomized state)

■Typical combustion test equipment

Chamber, silica tube

Entire combustion test equipment

Air blower

Manufactured Part Examples

OHMURA can offer a consistent response to customer needs from the preliminary design stage to evaluation and testing.
 

What is Annular Liquid Film Atomization?

This is a unique development technology used to convert liquid into a thin film not in a cylindrical shape, but in a circular shape, and then atomize the liquid by applying an air current. A swirling air current is generated both on the inner and outer perimeter of the thin liquid film, making clogging difficult, and realizing atomization with high efficiency and with little output.

Features

 

As opposed to single fluid nozzles which atomize and spray liquids using only liquid pressure, binary fluid nozzles use gas flow to atomize and spray liquids, achieving finer and better atomization.

With conventional binary fluid nozzles, it was necessary to spray liquids with high-pressure air to achieve atomization, but OHMURA’s unique technology has now made it possible to realize sufficient atomization even with low-pressure air. There is no need to reduce the liquid nozzle diameter.

In addition to having a large liquid nozzle diameter, OHMURA nozzles have an extremely clogging-resistant design realized with the self-cleaning effect produced by the swirling air current inside the nozzle.

Liquid is atomized using a 0.1 MPa blower, meaning that no compressor is necessary. OHMURA nozzles can be adopted with approximately 1/10 the initial investment.

No high-pressure is used, meaning a significant reduction in electricity usage fees and lower running costs.

The use of low-pressure air has resulted in a slower air current jet speed, meaning less noise.

Excellent deposition efficiency

Despite having a high level of atomization, OHMURA nozzles have remarkably high paint deposition efficiency on paint surfaces.

Features

A design with emphasis on heat resistance has made it possible to install these nozzles in combustion test equipment and actual gas turbines.

Complete with data on atomization characteristics, spray patterns obtained with laser CT spray structure analyzer

Nozzle shape tailored to customers’ applications

Specifications

OHMURA designs and manufactures nozzles with external appearance and shape to meet the demands of our customers based on the following basic specifications.

Lineup

Custom-made nozzles

Custom-made nozzle with swirler (return valve)

Custom-made nozzle with swirler

Burner nozzle

High-quality custom-made nozzles backed by reliable technological capabilities

Choose OHMURA SEISAKUSHO CO., LTD. for your custom manufacturing requirements.
Since our founding in 1930, OHMURA has strived consistently to provide our valued customers with advanced technologies and unrivaled quality in the machining field, and to respond to the diverse needs of our users with unique technologies.
We provide high-quality nozzles to solve our customers’ problems by applying technological capabilities and know-how cultivated in key industries such as automobiles, aviation, and space which are constantly at the forefront of technological innovation.