Fan having a printed circuit board
Assigneeebm-papst St. Georgen GmbH & Co. KG
InventorRodica Peia
Life of this patent
Estimating the term…
Abstract
A fan (20) has: a motor having a stator (40) and having a rotor (60) with at least one fan blade; at least one air inlet having an air entrance opening (102) for the inlet of air; at least one air outlet having an air exit opening (32) for the outlet of air; a circuit board (80) having at least one recess, which circuit board (80) is arranged in the region of the air inlet in such a way that air can enter the fan (20) through the recess, motor electronics (88) being arranged on the circuit board (80). In a preferred embodiment, a Negative Temperature Coefficient (NTC) resistor (84) is surface-mounted on a PC board portion (83) extending into the air passage, to thereby sense air temperature. This facilitates compact, automated construction.
Claims25
A fan (20) comprising:
- a motor having a housing (22, 24), a stator (40) and a rotor (60) with at least one fan blade (68);
- said housing defining at least one air inlet (29) having an air entrance opening (30, 102) for intake of air and at least one air outlet (37) having an air exit opening (32) for discharge of air (31);
- a flat circuit board (80) formed with at least one recess (89), which circuit board (80) is arranged adjacent the air inlet (29) in such a way that air can enter the fan (20) through the recess (89), a first portion (87) of the circuit board (80) being arranged adjacent a periphery of the air inlet (29), motor electronics (88) being arranged on the first portion of the circuit board (80), said motor electronics including a power stage having at least one semiconductor switch, being arranged on the first portion (87) of the circuit board (80).
Dependencies are inferred from the claim text.