• ebm-NADI International Private Limited

Hot Air Blower

The hot air blower and the drive motor that powers it are designed to withstand high ambient temperatures with no impairment of function and with the guarantee of a long service life. Hot air circulation blower is designed for the special requirements in circulating hot air, e.g. in ovens, climate cabinets, sterilization units, meal and dish warmers and similar appliances.

The basic design comprises a shaded pole or EC motor mounted outside the hot area using special mounting plates and a radial impeller made of FAL sheet steel, stainless steel or die-cast aluminium, which operates within the high temperature zone. Depending on the type or requirements, sintered sleeve bearings with high temperature-resistant lubricant or ball bearings may be used. The maximum permissible bearing temperature is 120°C. Versions with sleeve bearings may only be used with a horizontal shaft, but any shaft position is possible if ball bearings are used. The winding complies with insulation class H (EN60335).

Depending on the measures taken for thermal insulation between motor and impeller and the impeller material, circulation temperatures of up to approximately 250°C, temporarily even up to 500°C (e.g. for pyrolytic self-cleaning processes in ovens) can be managed. The standard types described below are only a selection taken from the wide range of possibilities. The circulation capacities they can achieve depend to a large extent, on the mounting situations, i.e. the specified values for air flow, pressure and speed are only general benchmark figures in typical mounting conditions.