Air-Conditioning

Operating theatre air-conditioning is dealt with in the air-conditioning project according to the respective standards (DIN 1946, part 4). The operating theatre installation supply includes only end elements of air-conditioning in accordance with the designed solution created by a professional air-conditioning designer.

Laminar Field

The Laminar field is normally installed in the middle of the operating theatre. The tube of the operating light usually goes through the centre of the laminar field.

The laminar field is normally installed onto the existing construction ceiling, or onto the prepared auxiliary steel structure if the height is too great.

The laminar field cannot be anchored onto the steel ceiling structure of the lower ceiling!

The laminar field’s dimension is dependent on the type of the operating theatre, its dimensions, usage, or the respective standards and regulations, from which the execution of the project in the specific country arises and which must be met, or upon the explicitly specified wish of the customer.

The laminar field consists of the corpus (the body) which is welded from aluminium and also of HEPA filters- class 13, lighting, and the frame where a laminarizer is installed.

The colour style of visible components of the laminar field is the same as the colour style of the ceiling panels (RAL 9010).

For this laminar field type, it is necessary to provide 100% of the air supply into the operating theatre, the volume flow rate according to the selected laminar field type and the number of required exchanges of the air (20-35 exchanges per hour).

Laminar Field with Air Recirculation

A Laminar field with air recirculation is an alternative to the normally supplied laminar field without recirculation. The disadvantage is a higher purchase cost and the advantage is lower operating costs as well as lower required volume of the air supply and lower required capacity of air-conditioning units.

The laminar field dimensions depend on the size of a room, normally 3×3 m.

The laminar field with the recirculation units (fans) which recycle the air from the operating theatre through the HEPA filters of the laminar field.

Generally speaking, this laminar field uses approximately 15-50 % of fresh air and the rest of recycled air.

Air-Conditioning Exhaust Channels

The air-conditioning exhaust channels are intended for air exhaust from the room and they are normally installed in the partition walls. The air-conditioning pipe is equipped with a control flap for easy control of all exhaust channels in the room. Perforated air-conditioning grids with a surface treatment of brushed stainless steel are installed in the exhaust channels. The lower grid (300 mm above the floor level) is equipped with a metal filter. The upper grid (300 mm under the lower ceiling) is equipped with a control system for uniform control of both the air-conditioning units. The stainless grids are removable, which allows for the cleaning of the whole pipe.

Air Supply Outlets

The air supply outlets are installed in the patient preparation rooms, washing and sterilization rooms, or in the operating theatres with lower demands for quality of air exchange (surgical intervention theatres).
The supply outlets are always equipped with HEPA filters, which provide the third grade of filtration.

Air Exhaust Outlets

The air exhaust outlets are installed into the lower suspended ceilings in the rooms where they are used for air supplying of a supply outlet. The number of exhaust outlets is determined by the dimensions of the rooms and the requirement for the number of air exchanges in the room. Visible components (perforated or drall outlets) have the same colour as the lower suspended ceiling (RAL 9010).