ACI blower inflates Pufferfish spherical displays

An Air Control Industries product story
Edited by the Engineeringtalk editorial team Aug 5, 2009

Air Control Industries (ACI) has supplied the MS8/DC blower to Putterfish to keep its digital spherical displays inflated.

Spherical displays are achieved via special projection techniques involving custom-engineered lenses that project media onto the inside of an inflated sphere that can be suspended from ceilings, hung from walls or just floor standing.

MS8/DC blower keeps Putterfish digital spherical displays inflated.

MS8/DC blower keeps Putterfish digital spherical displays inflated.

This projection technology has been developed over last few years by Pufferfish and is now being used worldwide for music events, business conferences and exhibitions.

At the same time as the core projection technology was being proven, the key factor of keeping the spheres inflated correctly was also being refined with the help of ACI.

The company was approached by Pufferfish after consultations with specialists in inflatables regarding appropriate blower manufacturers.

Initially, an off-the-shelf centrifugal fan was specified.

This was said to be a simple solution that both inflated the sphere and cooled the projection equipment as the excess air was ducted away.

Today's version of the Pufferfish digital spherical display is more sophisticated and larger in size, calling for a different blower solution.

The Pufferfish sphere is non-venting; air does not escape via the seams.

As a result, the blower must be able to maintain a consistent level of inflation in response to feedback from pressure sensors.

This calls for extreme opposites of performance, from the initial inflation of the sphere through to continuous 'tick-over' to maintain pressure without overheating.

In between, there are the pressure changes resulting from variations in ambient conditions that call for different blower outputs.

Will Cavendish, chief technology officer for Pufferfish, said: 'The latest blower satisfies all our inflation requirements while also helping us to achieve system design improvements.' The MS8/DC features a fan motor, which is a 24V external rotor unit that is controlled by varying the voltage.

This configuration is claimed to provide a simple, compact control solution that is quiet.

The compactness of the system facilitates transportation and installation; the latter is said to be essential for some applications, such as in television studios.

Find out more about this article. Request a brochure, download technical specifications and request samples here.

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