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How cyclone grease separators work

Cyclone grease filters are used in professional and industrial kitchens as a means of separating the grease from the exhaust air in extract hoods.

What Cyclone filter units have been designed to do is remove small grease particles from the air stream.

This kind of cyclone filters extract grease particles of sizes >5 um.


The material cyclone filters are most commonly manufactured in is stainless steel, usually AISI 304.

Example of a cyclone grease filter

Functioning principle

1. Grease laden air enters filter.
2. Grease particles are extracted as the air is directed along the filter walls by cyclone principle.
3. Grease and impurities drain to bottom of the filter unit
4. Purified air leaves the filter.

Functioning principle of a cyclone grease filter


1. Outer casing
2. Exhaust air connection
3. Damper plate.
4. Grease filters
5. Measurement tap for exhaust air
6. K-factor table

Typical design of a cyclone grease filter

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