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CLEAN-TENT :

CLEAN-TENT is a new innovative design concept in clean room technology.

Intended for users that require temporary clean room facilities, clean storage facilities or portability for on site work, the CLEAN-TENT covers most user requirements at a low capital cost.

CT 750 demo

A CT750 20 minutes after arriving on site

Construction is simple. A ground sheet made from  anti-static reinforced Tryolla combines with a 150mm skirt to create a tough durable base unit. The one piece top tent is then attached to the base unit via a zipper. This top tent comprises two compartments: an entry airlock for robe and de-robing; the main work cabin which is contained within a high quality PVC envelope. Positive pressure is provided by fan / filter units mounted at work station level on the work cabin gable wall.

CT1700 at Rutherford labs Didcot UK

A CT1700 at Rutherford Appleton Laboratory, UK.

Air systems: Dependant upon the application, a number of air system options are offered from a 40 micron 12 vdc filter for total portability, to a mains HEPA Class100 filter which effectively turns the work cabin into a high quality laminar flow work station. All air systems work on horizontal laminar flow principles, exhausting through user controlled vents in the work cabin and back through the airlock. The design ensures that the work cabin is always positively pressurised whilst the see through walls of the cabin make good use of ambient lighting.

Assembly: Assembly and erection could not be easier. The ground sheet is rolled out and placed in the desired location. Any large equipment that the clean room may be required to service is then placed onto the ground sheet. The top tent is then unfolded and zipped onto the ground sheet. You're now ready to turn the fans on and inflate!  Light weight  pole systems can be added for rigidity and as a safety precaution in case of power failure to the fan. After inflation the work cabin can be prepared for the users application.

CLEAN-TENT operating principle

CLEAN-TENT utilises air resources in a different way compared to a conventional clean room - minimal air pressure to ensure the tent is inflated and maximum airflow for assured air quality. CLEAN-TENT works on the economic principle of clean conditions at the workstation area (i.e. point-of-use) utilising horizontal cross-flow technology. In the HEPA filtered tents, air enters the work cabin through the filter at workstation level and travels in a laminar flow across the workstation envelope. At the fringes of the envelope, positively pressurised air diverges uniformly toward the zipper in the skirt thus preventing back eddies returning contamination to the envelope. At the end of the laminar flow stream, air is collected via zipper exhaust vents and cascades to pressurise the entry lock. By this method high quality air is delivered to the workstation area (i.e. where it is required) without the need for 100% wall / ceiling filtering.

The flow of air through the two chamber tent produces positive pressure. The two chambers ensure that this pressure cannot escape unregulated, thus the tent remains self supported by the fan/filter unit.

It is important that the materials used in the manufacture of clean rooms are sterile, smooth in surface finish, have a low out gassing rate and do not shed particulate. Modern advances in textile technology ( e.g. Teflon, PTFE and metalised coatings) have enabled synthetics to supersede solid based composites in  performance and at a lower cost. CLEAN-TENT utilises this methodology in order to produce a light weight, low particulate portable work cabin that can produce a high quality clean environment for the user at a very affordable price.

CLEAN-TENT is a versatile product that offers the user the ability to produce a work environment ranging from clean space to Class 100 cleanroom performance.

For users requiring very high cleanliness storage facilities or where the users application does not warrant the overhead and operating disciplines associated with cleanroom facilities, CLEAN-TENT provides options to create a clean and segregated work area that we call clean space. Here, the work cabin is showered with non-unidirectional flow filtered air from fan units located high on the cabin wall, and is exhausted through vents low down on the airlock wall close to the floor. The principle of this technique is to allow air to flow along irregular, random paths in a turbulent way thus mixing the clean air with the dust laden air within the work cabin and thereby diluting the contamination level and lowering the particle density per cubic foot. The supply of clean air is the determining factor in the success of this technique. CLEAN-TENT utilises 40 micron  fabric filter units or mini HEPA 0.3 micron filters to give circa 10 air changes per hour in order to preserve high quality clean space.

Where the user requires a more precise and higher quality environment, CLEAN-TENT can be configured as a laminar flow clean room workstation with mains HEPA H14 fan / filter units.

Clean-Tent™ is available in three models.

The 675 series

Designed as a two person work cabin and can be packed into a medium size suitcase, this tent has proved very popular with high-tech capital equipment companies, universities, nuclear and pharmaceutical applications.

The 750 series

Following the success of the CT675 series, some users requested a slightly larger work cabin in order to accommodate an extra person. Designed as a two/three person work cabin and can be packed into a medium size suitcase, this tent has proved very popular with high-tech capital equipment companies, universities, nuclear and pharmaceutical applications.

 

The 1700 series

This tent is designed as a 6 person work cabin or for clean storage where larger accommodation is required. It is still very portable, fitting into two large suitcases. Air systems can be tailored to application. 

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