×

SINGLE SUCTION TYPE CENTRIFUGAL FAN

  • US 20150086348A1
  • Filed: 09/04/2014
  • Published: 03/26/2015
  • Est. Priority Date: 09/24/2013
  • Status: Active Grant
First Claim
Patent Images

1. A single suction type centrifugal fan comprising:

  • a casing having a spiral shape; and

    an impeller housed in the casing and having a plurality of blades and an impeller main plate to which the blades are fixed,the casing includinga suction side plate having a suction port, anda motor fixing side plate to which a motor is fixed,the impeller main plate having a center portion fixed to the motor, whereinthe impeller main plate has a main plate opening formed between the blades and the center portion of the impeller main plate, anda constriction portion is formed where a distance between a blade end portion imaginary plane and the motor fixing side plate becomes narrower between the main plate opening and the blades, where the blade end portion imaginary plane is defined as a plane which passes end portions of the blades on a motor fixing side plate side and is perpendicular to a rotary shaft of the motor.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×