Impeller and fan device

Patent metadata

Field	Value
Publication number	US-2016290346-A1
Application number	US-201615083624-A
Country	US
Kind code	A1
Filing date	Mar 29, 2016
Priority date	Mar 31, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

An impeller includes: a cylinder that includes a circular plate-shaped circular plate and a peripheral wall that extends from an outer peripheral edge of the circular plate along a rotation shaft of the impeller; and a blade mounted to an outer peripheral surface of the peripheral wall, the blade being configured to send air. The circular plate has a circular plate opening at a center, the circular plate opening penetrating the circular plate along the rotation shaft, and a sidewall opening is formed at the peripheral wall, the sidewall opening penetrating the peripheral wall along a direction different from a direction parallel to the rotation shaft.

First claim

What is claimed is:

1 . An impeller comprising:
a cylinder that includes a circular plate-shaped circular plate and a peripheral wall that extends from an outer peripheral edge of the circular plate along a rotation shaft of the impeller; and a blade mounted to an outer peripheral surface of the peripheral wall, the blade being configured to send air, wherein the circular plate has a circular plate opening at a center, the circular plate opening penetrating the circular plate along the rotation shaft, and a sidewall opening is formed at the peripheral wall, the sidewall opening penetrating the peripheral wall along a direction different from a direction parallel to the rotation shaft.

2 . The impeller according to claim 1 , further comprising
an inductor formed on a back surface side of the circular plate, the inductor being configured to induce air flowing through the circular plate opening to the sidewall opening.

3 . The impeller according to claim 1 , wherein
the sidewall opening includes an intake port and a discharging port, the intake port being configured to take in air inside the cylinder, the discharging port being configured to discharge the air taken from the intake port to outside of the cylinder, and the discharging port is formed on a side close to the circular plate with respect to an installation surface of the peripheral wall to which the blade is mounted.

4 . The impeller according to claim 2 , wherein
the sidewall opening includes an intake port and a discharging port, the intake port being configured to take in air inside the cylinder, the discharging port being configured to discharge the air taken from the intake port to outside of the cylinder, and the discharging port is formed on a side close to the circular plate with respect to an installation surface of the peripheral wall to which the blade is mounted.

5 . A fan device, comprising:
the impeller according to claim 1 ; and a motor.

6 . The fan device according to claim 5 , wherein
the motor at least includes:
a cylindrical-shaped rotor mounted to an inside of the cylinder on the impeller, the rotor including a permanent magnet; and
a stator disposed inside the rotor, wherein
a rotor opening is formed on the side close to the circular plate of the rotor, the rotor opening penetrating the rotor along the rotation shaft.

7 . The fan device according to claim 6 , wherein
the impeller includes an inductor formed on a back surface side of the circular plate, the inductor being configured to induce air flowing through the circular plate opening to the sidewall opening, and the rotor opening on the rotor of the motor is disposed at a position facing the inductor.

Assignees

• Sanyo Electric Co

Inventors

• Watanabe Jiro
• Miyazawa Masashi
• Nakayama Akira

Classifications

• F04D19/002 Primary

  Axial flow fans · CPC title

• F04D25/064

  Details of the rotor · CPC title

• F04D29/329

  Details of the hub · CPC title

• F04D25/06 Primary

  the pump being electrically driven (F04D25/08 takes precedence) · CPC title

• F04D25/082

  the unit having provision for cooling the motor · CPC title