| 摘要 |
A miniature blower, comprising an impeller (1), a motor (2), a rotating connecting piece (3) and a mixed-type dynamic pressure gas radial bearing (4). The motor comprises a rotor (21), a stator (22), a rotary shaft (23), an end cover (24) and a housing (25), the housing (25) being an annular cylindrical structure formed of an inner cylinder and an outer cylinder and having two cavities, the rotating connecting piece (3) being a cylindrical structure having a single cavity, the rotating connecting piece being sleeved on the rotary shaft (23) near to the impeller (1), and being respectively fitted with and connected to the impeller (1) and an end portion of the rotary shaft (23), a side portion (31) of the rotating connecting piece being located within a cavity formed by the outer cylinder (251) and the inner cylinder (252) of the housing. The mixed-type dynamic pressure gas radial bearing (4) and the rotary shaft (23) are located within a cavity of the inner cylinder (252) of the housing, and the mixed-type dynamic pressure gas radial bearing (4) is sleeved on the rotary shaft (23). The stator (22) is fixed on an outer wall of the inner cylinder (252) of the housing, and the rotor (21) is fixed on an inner wall of the side portion (31) of the rotating connecting piece (3). The blower implements an ultra-high speed operation in an air state, and with regard to identical power requirements, the size of the blower is significantly reduced for miniaturisation. |
