The London Tornado^TM is a local exhaust (hood) -“artificial tornado”- that, similarly to the tornado theory, creates a pressure difference by the spirally flowing air to draw contaminants from the defined sources.

The London Tornado^TM (LT^TM), one of the ways to positively utilize principle of the tornado, is proposed to remove contaminants by significantly smaller amount of exhausting air and from the more distant places than conventional exhausts.

All conventional hoods utilize methods of the simple straightforward suction patterns. The disadvantages of the hoods:

1. Suction pattern is very short.

2. Intensification of air suction leads to the significant increase of an amount of the exhausted air.

To design the most sufficient conventional hood with a minimum of air capacity this one must be located as close to the source as it is reasonably possible. Location of the hood in the working zone creates, fiequently, restrictions for performing work.

The LT^TM is based on distinguished principle, and comprises an impeller housed within a shell.

The impeller generates a vortical suction airflow with the low-pressure region inside. This low-pressure region is contained by the airflow walls, and directed the attractive forces toward a source of the contamination.

You can observe in the picture, how in spite of the fumes attempt to uplift, the LT^TM intercepts them and draws them spirally into exhaust duct. This shows how strong the suction pattern is.

The LT^TM removes contaminants from the more distant places by significantly smaller amount of exhausting air than the conventional exhausts.

Structure of LT^TM does not use any moving parts and does not have any power devices.

The pressure in the center of the swirling air is lower than ambient one; therefore the contaminated air is spirally drawn into the exhaust duct.

Unlike as the conventional hoods the LT^TM can be located far enough from the source of contaminanation to allow an unabstracted space for working operations.

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  The LT^TM may replace the conventional hoods where the control, movement and predictability are required.

  The LT^TM is energy saving device because it provides the sufficient exhaust from the distant places with reasonably small amount of exhausting air. 

  Unlike the conventional hoods, the LT^TM does not restrain working conditions.