Fan motor assembly and vacuum cleaner having the same

Patent metadata

Field	Value
Publication number	US-10145386-B2
Application number	US-201414578931-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Jan 2, 2014
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A fan motor assembly capable of improving efficiency of a motor by minimizing flow loss, and a vacuum cleaner having the same includes a case, a motor installed inside the case to form a suction force, an impeller rotatably installed on a shaft of the motor, and a guide fan configured to guide air that is suctioned by the motor, wherein the guide fan includes a first guide unit configured to increase pressure of the suctioned air and a second guide unit provided at an upper side of the first guide unit to be in contact with the case.

First claim

What is claimed is:

1. A fan motor assembly, comprising:
a case;
a motor installed inside the case;
an impeller installed on a rotation shaft of the motor to suction air; and
a guide fan configured to guide the suctioned air,
wherein the guide fan comprises:
a first guide unit configured to increase a pressure of the suctioned air, and
a second guide unit provided at a side of the first guide unit, and having a ring shape,

the case comprises a first case provided to house the impeller and a second case provided to house the motor, and
the second guide unit comprises at least one rib protruding from a surface of the second guide unit in a direction away from the motor, the at least one rib configured to contact the first case.

2. The fan motor assembly of claim 1 , wherein:
the first guide unit comprises:
a panel member having a circular shape, and
a diffuser provided at a lower side of the panel member.

3. The fan motor assembly of claim 2 , wherein:
the panel member is provided with a coupling groove formed to be coupled to the second guide unit.

4. The fan motor assembly of claim 1 , wherein:
the second guide unit further comprises:
a return vane formed to guide the air having the increased pressure from the first guide unit toward the motor.

5. The fan motor assembly of claim 4 ,
wherein the at least one rib is formed to make contact with a circumference of a surface of an inner side of the first case.

6. A fan assembly for minimizing air flow loss, the fan assembly comprising:
a case including a first case and a second case;
a rotatable impeller provided in the first case to exhaust suctioned air in a radial direction; and
a guide fan configured to guide the exhausted air from the rotatable impeller,
wherein the guide fan comprises:
a first guide unit configured to increase a pressure of the exhausted air, and
a second guide unit having a ring shape and provided at a side of the first guide unit, and including at least one rib protruding from a surface of the second guide unit in a direction away from the motor and configured to contact an inner side of the first case.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Oh Hyeon Joon

Classifications

• A47L9/0081

  Means for exhaust-air diffusion; Means for sound or vibration damping · CPC title

• A47L5/22

  with rotary fans · CPC title

• F04D29/441 Primary

  especially adapted for elastic fluid pumps · CPC title

• A47L9/22 Primary

  Mountings for motor fan assemblies · CPC title