Fan system

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).