DН Series Smoke Exhausters are industrial centrifugal (radial) fans with high efficiency (up to 80–85%), providing reduced energy losses. They are designed for the removal of flue gases from the combustion chambers of medium and high power boilers. Manufactured from various materials: carbon steel (for gases up to 200°C), optionally low-alloy steel (up to 400°C), or high-alloy steel (up to 750°C). The housing is powder-coated for corrosion protection.
The impeller has 16 backward-curved blades and can be configured for right or left rotation. The housing can be rotated in 15° increments, which simplifies installation in various conditions. There are three design schemes:
— No. 1 — the impeller is mounted directly on the motor shaft;
— No. 3.1 — the impeller is driven via an intermediate shaft;
— No. 3.2 — the impeller is driven via an intermediate shaft with an oil bath.