초록 ▼

A fan unit (1), to be attached to a filter frame (40) of a filter fan, consisting of a housing with a cylindrical housing rim, an inlet opening (20), an outflow opening (7) and at least one protective grid which covers one of both of the openings, and one fan (4) attached to the housing via a motor

A fan unit (1), to be attached to a filter frame (40) of a filter fan, consisting of a housing with a cylindrical housing rim, an inlet opening (20), an outflow opening (7) and at least one protective grid which covers one of both of the openings, and one fan (4) attached to the housing via a motor mount (14) which conveys the air in at least the axial direction. The design enabling the manufacture of a more compact fan unit in an easier and more cost-effective manner, which provides high efficiency and can be installed as a suction as well as a blowing fan unit in the filter fan, and is easy to dismount for the maintenance of the filter fan. This is attained in that the fan unit housing is divided perpendicularly with respect to the axis (X-X) of the fan (4) in the region of the housing rim (9, 22) into two housing parts, one forming a motor bracket (2) and the other forming an air inlet part (3), which are detachably connected to one another, whereby the motor bracket (2) as well as the air inlet part (3) each integrally form a protective grid structure (8, 21).

대표청구항 ▼

1. A fan unit (1) configured to be attached to a filter frame (40) of a fan (4) with a fan axis (X-X), the fan unit being a preassembled unit comprising a housing with a cylindrical housing rim (22), an inlet opening (20), an outflow opening (7), and two protective grid structures (8, 21) covering t

1. A fan unit (1) configured to be attached to a filter frame (40) of a fan (4) with a fan axis (X-X), the fan unit being a preassembled unit comprising a housing with a cylindrical housing rim (22), an inlet opening (20), an outflow opening (7), and two protective grid structures (8, 21) covering the inlet opening (20) and the outflow opening (7), anda fan (4) attached to the housing by a motor mount (14) which conveys air in at least an axial direction parallel to the fan axis (X-X), the fan (4) having a fan wheel (6) formed as one of a diagonal fan wheel and an axial fan wheel,the housing being divided perpendicularly to the fan axis (X-X) in the region of the cylindrical housing rim (9, 22) into at least two detachable housing parts connected to one another, one of the housing parts forming a motor bracket (2) and the other housing part forming an air inlet part (3), each of the motor bracket (2) and the air inlet part (3) formed in one piece with one of the two protective grid structures (8, 21),the motor bracket (2) and the air inlet part (3) each having a circumference with at least one first mounting flange (12) with first fastening elements (15, 16, 17) circumferentially arranged on the circumference of the motor bracket (2) and at least one second mounting flange (25) with further first fastening elements (15, 16, 17) on the circumference of the air inlet part (3), the first and second flanges being arranged at an axial distance from each other, the first fastening elements of the motor bracket (2) and of the air inlet part (3) being identical (15, 16, 17) and configured to permit an attachment of the fan unit (1) in two different orientations rotated relative to each other by 180° about an axis perpendicular to the fan axis (X-X), andaxially extending spacers (28) being arranged on axially outward facing surfaces of protective struts or supporting struts of the grid structure and on an axially outward facing surface of a nozzle portion of the inlet part. 2. The fan unit (1) according to claim 1, further comprising that the at least one protective grid structure (8) of the motor bracket (2) has a motor mount (14) with fastening elements for attaching the fan (4). 3. The fan unit (1) according to claim 1 further comprising that at least one of the motor bracket (2) and the air inlet part (3) integrally has the cylindrical housing rim (9, 22) circumferentially attached to the at least one protective grid structure (8, 21), the cylindrical housing rim having a cylinder axis running parallel with respect to the fan axis (X-X). 4. The fan unit (1) according to claim 1 further comprising that the housing is centrally divided in the region of the cylindrical housing rim (9, 22). 5. The fan unit (1) according to claim 1 further comprising that the first fastening elements (15, 16, 17) of the first and second mounting flanges (12, 25) of the fan unit together with second fastening elements (42, 43) of the filter frame (40) form a bayonet lock. 6. The fan unit (1) according to claim 1 further comprising that the first fastening elements of the first and second mounting flanges (12, 25) consist of at least one keyhole-shaped bayonet opening (15). 7. The fan unit (1) according to claim 1 further comprising that the motor bracket (2) and the air inlet part (3) each have four mounting flanges (12, 25) which are circumferentially equally distributed at an angle of 90°. 8. The fan unit (1) according to claim 1 further comprising that the first fastening elements of the first and second mounting flanges (12, 25) have a snap-in hole (16) with an unlocking knob (17) applied to the snap-in hole (16) via a radial bar. 9. The fan unit (1) according to claim 1 further comprising that outward pointing holding struts (11, 24) that are inclined obliquely with respect to the fan axis (X-X) are configured in a radially outer region of at least one of the two protective grid structures (8, 21), so that the at least one of the two protective grid structures is configured plate-shaped, with a plate bottom protruding outward from the inlet opening (7) and the outflow opening (20), respectively. 10. The fan unit (1) according to claim 1, wherein the fan wheel is a diagonal fan wheel. 11. The fan unit (1) according to claim 1 further comprising that the motor bracket (2) has an first open connector housing part (18) and the air inlet part (3) has a second open connector housing part (26) laterally on the cylindrical housing rim (9, 22) or on one of the at least one first and second mounting flanges (12, 25) the first and second open connector housing parts forming a connector housing for receiving a plug connector of the fan unit (1). 12. The fan unit (1) according to claim 11 further comprising that the plug connector (30) is arranged inside the connector housing. 13. The fan unit (1) according to claim 1 further comprising that the filter frame (40) has second fastening elements (42) applied to at least two fastening fittings (41) and each second fastening element consists of a mushroom-shaped fastening knob (42) applied to one of the at least two mounting rims (41). 14. The fan unit (1) according to claim 1 comprising that the fastening elements of the filter frame (40) at least have one snap-in hook (43) which is applied to one of the mounting rims (41). 15. The fan unit (1) according to claim 1 further comprising that the outflow opening (7) and the cylindrical housing rim (9) of the motor bracket (2) have matching diameters, and that the inlet opening (20) has a smaller diameter than the cylindrical housing rim (22) of the air inlet part (3).