ventilators: harmann: duct fans

An eco-friendly modern EC engine
A diagonal duct fan with a unique design that makes JETTEC quieter, more efficient and more economical than standard duct fans. In addition, the design of the rotor and diffuser allows the use of a housing corresponding exactly to the dimensions of the wire, so you can design installations that take up less space.

The fan casing is made depending on the diameter:
– for diameters 150-200 – made of plastic in black
– from a diameter of 400 – entirely of aluminum

The unique intake confusor is adapted exactly to the dimensions of the rotor, which makes the air is drawn directly on the cone of the diagonal rotor without any turbulence between the casing and the edges of the blades. Before the loss of efficiency at the edges of the blades is also protected by a special profiled ring connecting all the blades and a caulking flow chamber between the confusor and the diffuser guides located behind the rotor.

The JETTEC engine has been encapsulated with a diffuser profile made of plastic. Its main elements are:
– profiled vanes designed to maximally reduce the turbulence of flow behind the rotor
– a beveled cone equalizing the flow velocity in the entire cross-section of the channel behind the fan
This combination of various types of air stream regulation elements makes the fan’s efficiency increase to about 50% compared to standard fans with radial impellers and approx. 11% compared to JETTEC models equipped with conventional AC asynchronous motors.

The JETTEC EC fans use a dynamically balanced plastic diagonal impeller (from diameter 400 from aluminum) with an outer ring to eliminate pressure losses caused by turbulent flow at the ends of the blades. Profiled blades for the least turbulent flow are placed on the conical hub of the confusor, thanks to which the sucked air is directed to the most effective part of the blade.
The drive is implemented by a synchronous electric motor, brushless, electronically commutated EC, single-phase 230V, 50Hz or three-phase 3x400V, 50Hz.
The motors are designed for smooth speed control in the full range while maintaining high efficiency.

Degree of protection: IPX4
Insulation class: B (models 150-160) and F (others)

The most important features:
– an efficient, energy-saving EC motor
– a unique design that saves space
– energy saving thanks to solutions reducing flow losses
– a diagonal rotor with an outer ring to eliminate pressure losses
– motor with integrated thermal protection
– optionally, it is possible to connect an external potentiometer to the task of rotation
– maximum working temperature 40-80 ° C depending on the model
– 9 models with diameters from 150-710

• Download
• Print this product's card
• Wentylator JETTEC EC - instrukcja obsługi
• Karta katalogowa