Volute structure of single air inlet

Volute structure of single air inlet

  • CN 105,134,657 B
  • Filed: 09/11/2015
  • Issued: 09/29/2020
  • Est. Priority Date: 09/11/2015
  • Status: Active Grant
First Claim
Patent Images

1. The utility model provides a spiral case structure of single air inlet which characterized in that:

  • the axial section containing the axis of the impeller is seen, the distance from each point on the peripheral wall of the volute close to the midline of the volute to the axis is greater than the distance from each point on the peripheral wall of the volute at two sides to the axis (144);

    in the direction of the axis (144), the volute comprises a first half-shell (13) and a second half-shell (15), the first half-shell (13) comprising a first half-shell circumferential wall (131) and a first half-shell side wall (132), the second half-shell comprising a second half-shell circumferential wall (151) and a second half-shell side wall (152), the first half-shell circumferential wall (131) being connected with the second half-shell circumferential wall (151);

    an inner concave part (1321) is formed on the first half shell side wall (132) of the first half shell (13), and a motor mounting opening (133) is formed in the center of the inner concave part (1321);

    a cylindrical support (134) is arranged at the edge of the motor mounting opening (133) of the first half shell (13), and a through hole communicated with the motor mounting opening (133) is formed in the cylindrical support (134);

    a volute air inlet (153) is formed in the second half shell (15);

    the fixed end of the cylindrical support (134) is connected with the edge of the motor mounting opening (133), the free end of the cylindrical support (134) extends towards the direction away from the center of the volute on the axis, and a second sealing structure matched with the motor is arranged at the end part of the free end of the cylindrical support (134).

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