# US 2014/0154109 A1 · Fan system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154109 A1 - Document ID: US20140154109A1 - Status: Published application - Kind: A1 - Application number: 13/844,970 - Filed: 2013-03-16 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Zhongshan Broad-Ocean Motor Co., Ltd. - Inventors: Songfa TANG; Xiao LIU - Web page: https://patentgrep.com/patent/US20140154109A1 ## CPC - F04D 25/0613: {the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator} - F04D 17/162: {Double suction pumps} - F04D 25/0606: {the electric motor being specially adapted for integration in the pump} - F04D 25/068: {Mechanical details of the pump control unit (pump control details F04D27/00)} - F04D 29/056: Bearings - H02K 5/00: Casings; Enclosures; Supports - H02K 5/15: Mounting arrangements for bearing-shields or end plates - H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A fan system in combination with a DC brushless motor. The DC brushless motor includes: a shaft, a base, a stator assembly, a rotor assembly, a control box including a second cavity, and a circuit board. The fan system includes: a blower housing, a wind wheel, a first mounting bracket, and a second mounting bracket. The first mounting bracket is arranged at a first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing, and the other end of the shaft is disposed on the first bearing. The second mounting bracket is arranged at a second air inlet. The outer side of the second mounting bracket is connected to the lower end surface. ## Claims ### Claim 1 A fan system in combination with a DC brushless motor (2), the DC brushless motor (2) comprising: a shaft (21), a base (22), a stator assembly (23), a rotor assembly (24), a control box (25) comprising a second cavity, and a circuit board (26); the fan system comprising: a) a blower housing (1), the blower housing (1) comprising: a first cavity (11), an upper end surface (12), a lower end surface (13), and an air outlet (16); b) a wind wheel (3), the wind wheel (3) comprising a connecting plate (31); c) a first mounting bracket (4), the first mounting bracket (4) comprising: an outer side, an inner side; and d) a second mounting bracket (5), the second mounting bracket (5) comprising: an outer side, and an inner side; wherein the first cavity (11) is arranged inside the blower housing (1); a first air inlet (14) is disposed on the upper end surface (12) of the blower housing (1); a second air inlet (15) is disposed on the lower end surface (13) of the blower housing (1); the first air inlet (14) and the second air inlet (15) are communicated with the cavity (11); the air outlet (16) is communicated with the cavity (11); the circuit board (26) is arranged in the second cavity of the control box (25); the stator assembly (23) is disposed on the base (22); the rotor assembly (24) is disposed on a middle part of the shaft (21); the stator assembly (23) is arranged inside the rotor assembly (24); the base (22) is provided with a second bearing (7); one end of the shaft (21) is disposed on the second bearing (7); the connecting plate (31) in disposed on a middle part of the wind wheel (3) outside the rotor assembly (24); the first mounting bracket (4) is arranged at the first air inlet (14); the outer side of the first mounting bracket (4) is connected to the upper end surface (12); the inner side of the first mounting bracket (4) is provided with a first bearing (6); the other end of the shaft (21) is disposed on the first bearing (6); and the second mounting bracket (5) is arranged at the second air inlet (15); the outer side of the second mounting bracket (5) is connected to the lower end surface (13); the inner side of the second mounting bracket (5) is connected to the control box (25). ### Claim 2 (depends on 1) The fan system of claim 1, wherein the base (22) and the control box (25) are arranged together and positioned in the first cavity (11); and the inner side of the second mounting bracket (5) is connected to the control box (25). ### Claim 3 (depends on 1) The fan system of claim 1, wherein the control box (25) is arranged outside the blower housing (1); the circuit board (26) is arranged inside the control box (25) and is in electric connection with the stator assembly (23) in the first cavity (11) through a wire; and the inner side of the second mounting bracket (5) is connected to a bottom of the base (22). ### Claim 4 (depends on 1) The fan system of claim 1, wherein a flange plate (241) is fixed outside the rotor assembly (24); a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and the flange plate (241) is connected to the connecting plate (31) via a screw. ### Claim 5 (depends on 2) The fan system of claim 2, wherein a flange plate (241) is fixed outside the rotor assembly (24); a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and the flange plate (241) is connected to the connecting plate (31) via a screw. ### Claim 6 (depends on 3) The fan system of claim 3, wherein a flange plate (241) is fixed outside the rotor assembly (24); a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and the flange plate (241) is connected to the connecting plate (31) via a screw. ### Claim 7 (depends on 4) The fan system of claim 4, wherein the first mounting bracket (4) comprises a plurality of first mounting legs (41); the first mounting legs (41) are distributed around the first air inlet (14); one end of each of the first mounting legs (41) are connected to the upper end surface (12); the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and the first bearing (6) is arranged inside the third cavity (42). ### Claim 8 (depends on 5) The fan system of claim 5, wherein the first mounting bracket (4) comprises a plurality of first mounting legs (41); the first mounting legs (41) are distributed around the first air inlet (14); one end of each of the first mounting legs (41) are connected to the upper end surface (12); the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and the first bearing (6) is arranged inside the third cavity (42). ### Claim 9 (depends on 6) The fan system of claim 6, wherein the first mounting bracket (4) comprises a plurality of first mounting legs (41); the first mounting legs (41) are distributed around the first air inlet (14); one end of each of the first mounting legs (41) are connected to the upper end surface (12); the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and the first bearing (6) is arranged inside the third cavity (42). ### Claim 10 (depends on 4) The fan system of claim 4, wherein the second mounting bracket (5) comprises a plurality of second mounting legs (51); the second mounting legs (51) are distributed around the second air inlet (15); one end of each of the second mounting legs (51) is connected to the lower end surface (13); the other end of each of the second mounting legs (51) are connected to an erection loop (52); and the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw. ### Claim 11 (depends on 5) The fan system of claim 5, wherein the second mounting bracket (5) comprises a plurality of second mounting legs (51); the second mounting legs (51) are distributed around the second air inlet (15); one end of each of the second mounting legs (51) is connected to the lower end surface (13); the other end of each of the second mounting legs (51) are connected to an erection loop (52); and the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw. ### Claim 12 (depends on 6) The fan system of claim 6, wherein the second mounting bracket (5) comprises a plurality of second mounting legs (51); the second mounting legs (51) are distributed around the second air inlet (15); one end of each of the second mounting legs (51) is connected to the lower end surface (13); the other end of each of the second mounting legs (51) are connected to an erection loop (52); and the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw. ### Claim 13 (depends on 7) The fan system of claim 7, wherein an end part of the first mounting leg (41) is provided with a strip groove (43); and a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1). ### Claim 14 (depends on 8) The fan system of claim 8, wherein an end part of the first mounting leg (41) is provided with a strip groove (43); and a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1). ### Claim 15 (depends on 9) The fan system of claim 9, wherein an end part of the first mounting leg (41) is provided with a strip groove (43); and a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1).