| 摘要 |
A direct current electric fan motor (90) according to the present invention employs a circular fan housing (92) forming the circular fan rotor opening (94) and a circular fan rotor recess (100). Curved elongate electrical coils (124) having curved ferrous metal cores located within spaced receptacles (126) in the housing (92) and are connected in series by conductors which are received within grooves formed by the housing. A retainer element (91) provided with a circular locator projection (184) is received in assembly with the housing (92) to encapsulate the coils (124) and conductors within the housing (92). A fan rotor (104) supported within the housing (92) has an external rim (102) that is received within the circular recess (100) of the housing (92) and supports a plurality of permanent magnets (118) which are each positioned with the same polarity thereof being exposed to the coils. Solid state motor circuitry is provided which includes a Hall sensor for commutation and a temperature controlled speed controlled circuit. |
