Patent Filtration Systems. Air Purification Filters for Clean Rooms

Air Filter Systems for Smoky Rooms and Offices

Over the past few years Indoor Air Quality (IAQ) has become an area of growing concern. As modern buildings have become tighter, ventilation rates have been reduced and new contaminants detected, resulting in increased levels of indoor air pollution.

One major concern is the risk of health of passive smoking and with the health and safety executive stating (under section 2 of the Health & Safety at Work Act 1974) employers must ensure, so far as is reasonably practicable, the health, safety and welfare at work of all their employees – the need to act is clear.

The HSE recommends that all employers should have a specific policy on smoking in the work place, which should give priority to the needs of non-smokers who do not wish to breathe tobacco smoke and that smokers should be segregated from non-smokers. This is not always practical and prior to any statutory requirements being put in place, industry as a whole needs to react to and comply with the existing guidelines to improve indoor air quality.

Filtaire Air Cleaners recirculate air around enclosed spaces – rooms, offices, hospitality suites, work areas, bars or clubs. This process is completed many times an hour and each time polluted air passes through special filters that remove contaminants, thus returning cleaned air to the room.

Contaminants may be a) particulate i.e. solid particles down to sub-micron levels (1 micron = 1/1000th millimeter) or b) gaseous in the form of volatile organic compounds (VOC’s) e.g. solvent fumes and odours.

Both the amount of the airflow and the type of filter being used will determine the efficiency of the units. All Filtaire units offer a selection of filter media to suit various applications. Our 200 model has a single speed, the 300 has dual speed and both our 2000, and 5000 models have a variable speed fan system so that air recirculation rates can be adjusted to changing conditions.

Continuously recycling and filtering the air within any enclosed space creates conditions that approach those of a specially designed ‘clean room’. Hence, there is a very significant reduction in the risk of breathing in unwanted or potentially harmful contaminates such as tobacco smoke, bacteria, viruses, pollens, spores etc. as well as solvent vapours and odours. The air treated in this way becomes cleaner than so called ‘fresh air’, which in itself may be contaminated with exhaust fumes, bacteria, spores, pollens and various other contaminates. There are, thus, many cases where Air Cleaner systems will give much better results than extraction or ventilation systems.

Cleaner Air for Products and Processes

Products or processes may suffer from unwanted inclusion of dust and dirt and other forms of airborne contamination. Air cleaners are a low cost option to achieving ‘clean room’ conditions, hence, invaluable for improving the quality of the air to avoid spoiling products or processes.

A Simple Low Cost Solution

The Filtaire ranges are a simple arrangement of fan plus filter (with the exception of the patented design of rotating the filter media in our 300 and 200 models to create the air flow), and therefore, have a low initial cost. They are inexpensive to install because they do not require expensive ductwork or fans. It is economic to operate only consuming 120watts. Because they recirculate the air, the Filtaire range has the added advantage of not requiring additional heating or cooling when compared with most extraction and ventilation systems.

Copyright 2004 Patent Filtration Ltd.