Industrial ambient air curtain without heat exchanger - R4 S | Robur

Industrial doors must be allowed to open and close as long as it is required to let people and transport in and out. This is sufficient to lower the internal temperature by several degrees and to increase the amount of time the heating system is running. In order to prevent heat loss, energy waste and subsequently to avoid thermal changes which can affect personnel and result in higher running costs, Robur has created the R4S Air Barrier which greatly reduces heat loss through the door openings.

Air curtain is turned off

Cold weather enters the room through the gate, cold air zones are formed around them.

Air curtain is turned on

Cold weather can't enter the room through the gate, cold air zones do not form around them.

One barrier - two advantages

The R4 operation is as simple as it is ingenious. It consists of a powerful fan, which can be set to operate each time the door is opened. It takes air from the upper area and blows it down over the door opening at high speeds through its long thin nozzle.
This action promotes two fundamental effects:

• helps to eliminate heated internal air from escaping to outside;
• re-uses the hotter air from the higher area by blowing it back down to the lower working level where it is needed.

Simple installation - maximum versatility

The installation of a Robur R4 air barrier is easy. The powerful centrifugal fan requires a single-phase (230V) electrical supply. The multi-positional wall fixing bracket allows for different nozzle angles to suit the characteristics of the door it is covering. By installing several R4 air barriers all door widths can be catered for.

Energy saving mode

The R4 air barrier is fitted with a three speed regulator allowing the airflow duty to be altered depending on the units mounting height.
The lower the door opening then the lower the airflow duty and thus, the lower the energy consumption.