AIR TEMPERATURE-SENSITIVE ELEMENT Russian patent published in 2003 - IPC

FIELD: measurement technology. SUBSTANCE: given invention can be employed as temperature-sensitive element of air in car cabin. Air temperature-sensitive element has decorative panel with air intake holes, enclosure with stiffening ribs made on external side, electric motor housed in enclosure, impeller put on axle of electric motor, contact unit, temperature-sensitive unit with normalizing device. Stiffening rib is made over internal diameter of enclosure, brushless electric motor has stator carrying two windings, rotor carrying axle and four poles facing windings of stator, controller of position of poles of rotor and control system. Control system incorporates two transistor keys, four resistors and three capacitors. Leads-out of windings of stator of electric motor are connected to collectors of transistor keys. EFFECT: raised operational reliability of air temperature-sensitive element, its enhanced resistance to action of mechanical loads, reduced labor input to manufacture of temperature-sensitive element, diminished level of radio interference and acoustic noise. 2 cl, 5 dwg