FIELD: ventilation.
SUBSTANCE: claimed device comprises a motor with a blower and power supply and a calibration module to adjust the actual velocity of the airflow changed by a physical characteristic of the vent system. Note here that the said calibration module comprises the system curve describing the system physical characteristic. Besides, the said module includes a set of working curves, each describing the fed power magnitude. The said calibration module incorporates a power controller connected with the engine to vary the actual flow rate through the system to make it equal to a reference flow rate. The physical characteristic of the claimed system comprises the area of the cross-section and the flow channel length, rectangular, angular and connection sections, filters, edge fittings or a combination thereof.
EFFECT: sufficient flow rate under whatever multiple conditions of the location.
20 cl, 7 dwg
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