# US 11,909,269 B2 · Combined fixed fan for disc-type motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,269 B2 - Document ID: US11909269B2 - Status: Granted - Kind: B2 - Application number: 17/383,522 - Filed: 2021-07-23 - Published: 2021-11-11 - Granted: 2024-02-20 - Earliest claimed: 2019-07-21 - Applicants: Renwei Yu - Inventors: Renwei Yu - Web page: https://patentgrep.com/patent/US11909269B2 ## CPC - H02K 1/2798: where both axial sides of the stator face a rotor - H02K 1/146: {consisting of a generally annular yoke with salient poles} - H02K 1/20: with channels or ducts for flow of cooling medium - H02K 1/32: with channels or ducts for flow of cooling medium - H02K 9/06: with fans or impellers driven by the machine shaft - H02K 21/24: with magnets axially facing the armatures, e.g. hub-type cycle dynamos - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A combined fixed fan for a disc-type motor includes a front fixing sheet (1), a fan (2) and a rear fixing sheet (3) in sequence in an axial direction, wherein the front fixing sheet and the rear fixing sheet are both circular sheets with a central hole (10), and are provided with magnet fixing holes (4) evenly arranged in a circle, the fan (2) is integrally provided with an annular column-shaped spacing frame (11), a center of the fan (2) is axially provided with a shaft hole (15) for a motor rotating shaft to pass through, and a plurality of fan blades (13) arranged around the shaft hole (15) are arranged in the spacing frame (11); and a side surface of the spacing frame is provided with a plurality of air outlet channels (16) evenly arranged in a circle. ## Claims ### Claim 1 A combined fixed fan for a disc-type motor serving as a component of the disc-type motor, wherein a motor fan fixing frame comprises a front rotor frame (19), a front fixing sheet (1), a fan (2), a rear fixing sheet (3) and a rear rotor frame (20) in sequence in an axial direction: the front rotor frame (19) and the rear rotor frame (20) are circular sheets with a center fixed with a disc-type motor rotating shaft, and are used for annularly arranging and mounting permanent magnets on inside surfaces of the same respectively; the front fixing sheet (1) and the rear fixing sheet (3) are of the same shape, are both circular sheets with a central hole (10), and are provided with magnet fixing holes (4) in a circle corresponding to positions of the permanent magnets, a plurality of outer assembling holes (7) are arranged around an inner edge, a plurality of rotor fixing holes (5) are arranged around an outer edge, the rotor fixing holes (5) of the front fixing sheet (1) are fixedly connected with the front rotor frame (19), and the rotor fixing holes (5) of the rear fixing sheet (3) are fixedly connected with the rear rotor frame (20); the fan (2) is integrally provided with an annular column-shaped spacing frame (11), a center of the fan (2) is axially provided with a shaft hole (15) for the motor rotating shaft to pass through, and a plurality of fan blades (13) arranged around the shaft hole (15) are fixed in the spacing frame (11); and a side surface of the spacing frame is provided with a plurality of air outlet channels (16) evenly arranged in a circle, and an end surface of the spacing frame is provided with a plurality of inner positioning holes (12) evenly arranged in a circle; and the outer assembling holes (7) of the front fixing sheet (1) and the rear fixing sheet (3) are matched and aligned with the inner positioning holes (12) of the fan (2) in number and position, and the outer assembling holes are connected with the inner positioning holes as a whole by fasteners, and the permanent magnets arranged on the front rotor frame (19) and the rear rotor frame (20) are axially aligned. ### Claim 2 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein the front rotor frame (19), the rear rotor frame (20), the front fixing sheet (1) and the rear fixing sheet (3) are respectively flat sheets with an equal thickness in all parts except through holes, and the front fixing sheet (1), the fan (2) and the rear fixing sheet (3) are all made of aluminum alloy or graphene. ### Claim 3 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein on the same front fixing sheet (1) or rear fixing sheet (3), an outer balancing hole (6) is arranged in a spoke (9) between adjacent magnet fixing holes (4). ### Claim 4 (depends on 3) The combined fixed fan for the disc-type motor according to claim 3, wherein the rotor fixing hole (5) is arranged in the spoke (9) radially outside the outer balance hole (6). ### Claim 5 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein on the same front fixing sheet (1) or rear fixing sheet (3), a plurality of inner balancing holes (8) evenly arranged in a circle are arranged between the magnet fixing holes (4) and the central hole (10). ### Claim 6 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein one end surface of the spacing frame (11) is a back plate (14) with the shaft hole (15), and an edge of the back plate is integrally or hermetically connected with the spacing frame. ### Claim 7 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein the air outlet channels (16) are arranged at a position the spacing frame between outer ends of two adjacent fan blades (13), and the inner positioning holes (12) are arranged in the spacing frame between two adjacent air outlet channels (16). ### Claim 8 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein the fan blades (13) are perpendicular to the end surface of the spacing frame (11). ### Claim 9 (depends on 6) The combined fixed fan for the disc-type motor according to claim 6, wherein an inclination angle is arranged between the fan blade (13) and the back plate (14). ### Claim 10 (depends on 1) The combined fixed fan for the disc-type motor according to claim 1, wherein an axial direction of the fan blade (13) extends out of one end of the spacing frame (11), and an extending length is less than a distance to an outer end cover.