Blower

Patent metadata

Field	Value
Publication number	US-11773871-B2
Application number	US-202217901173-A
Country	US
Kind code	B2
Filing date	Sep 1, 2022
Priority date	Sep 3, 2021
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A blower includes: a fan; a lower body having an inner space to receive the fan, and a suction hole; a first upper body communicating with the inner space and having a surface with a first discharge hole; a first damper movably coupled to the first upper body and penetrating the surface; the first damper having a first end facing an outside of the first upper body and a second end opposite to the first end; and a first bar extending along and coupled to the second end of the first damper.

First claim

What is claimed is:

1. A blower, comprising:
a fan that generates a flow of air;
a lower body that includes an internal space in which the fan is installed, and a suction hole providing air to the fan;
a first upper body that is positioned above the lower body, communicates with the internal space of the lower body, and has a surface at which a first discharge hole is formed;
a second upper body that is positioned above the lower body, is spaced apart from the first upper body, communicates with the internal space of the lower body, and has a surface at which a second discharge hole is formed;
a first damper that is movably coupled to the first upper body to selectively penetrate the surface of the first upper body, the first damper having a first end facing an outside of the first upper body, and a second end opposite to the first end, the first damper being movable in a direction close to or away from the surface of the second upper body; and
a first bar extending along and coupled to the second end of the first damper.

2. The blower of claim 1 , further comprising:
a second damper that is movably coupled to the second upper body to selectively penetrate the surface of the second upper body, the second damper having a first end facing a space formed between the surfaces of the first upper body and the second upper body, and a second end opposite to the first end; and
a second bar extending along and coupled to the second end of the second damper,
wherein the first damper and the second damper are symmetrical to each other with respect to the space,
wherein a moving direction of the first damper is opposite to a moving direction of the second damper, and the first end of the first damper faces the first end of the second damper in the moving direction of the first damper.

3. The blower of claim 1 , wherein the first bar includes:
a first wall facing the second end of the first damper;
a second wall extending from a first end of the first wall and facing an outer surface of the first damper; and
a third wall extending from a second end of the first wall and facing an inner surface of the first damper, wherein a portion of the first damper is positioned between the second wall and the third wall.

4. The blower of claim 3 , wherein the first damper has an arc-shaped cross-section and is movable in a length direction of the first damper, and
wherein the first bar is detachably coupled to the first damper due to an elastic force applied by the second wall and the third wall to the first damper.

5. The blower of claim 4 , wherein a radius of curvature of the outer surface of the first damper is greater than a radius of curvature of the inner surface of the first damper,
wherein the first damper includes a protrusion that protrudes from the outer surface of the first damper toward the second wall and is adjacent to the second end of the first damper, and
wherein the first bar includes a locking extension that protrudes toward the first damper from a distal end of the second wall, and is caught by the protrusion.

6. The blower of claim 5 , wherein the protrusion includes:
an inclined surface inclined with respect to a boundary between the protrusion and the first damper;
a horizontal surface connected to the inclined surface, and formed parallel to the boundary; and
a vertical surface connected to the horizontal surface, formed perpendicular to the boundary, and by which the locking extension is caught.

7. The blower of claim 6 , wherein a distal end of the locking extension has a round cross-section shape.

8. The blower of claim 5 , wherein the first bar includes a guide protrusion protruding from an inner surface of the second wall toward the third wall, and positioned on the protrusion.

9. The blower of claim 5 , wherein the first damper includes a plurality of pins formed at the outer surface of the first damper and spaced apart from each other in a length direction of the first damper, and
wherein the second wall covers the plurality of pins.

10. The blower of claim 3 , wherein the first bar further comprises an arch which extends outward from the third wall.

11. The blower of claim 3 , wherein the first bar further includes an inner protrusion that protrudes from an inner surface of the second wall toward the first damper, and is in contact with the outer surface of the first damper.

12. The blower of claim 1 , wherein the first damper further includes:
an upper boss that is formed at an inner surface of the first damper, and is adjacent to an intersection of an upper end and the second end of the first damper; and
a lower boss that is formed at the inner surface of the first damper, and is adjacent to an intersection of a lower end and the second end of the first damper, and
wherein an upper end of the first bar is adjacent to the upper boss, and a lower end of the first bar is adjacent to the lower boss.

13. The blower of claim 12 , further comprising:
an upper holder fastened to the upper boss;
a lower holder fastened to the lower boss;
a motor;
a driving gear fixed to a rotation shaft of the motor;
a first pinion engaged with the driving gear;
a shaft to which the first pinion is fixed; and
a second pinion fixed to the shaft, and spaced apart from the first pinion,
wherein the upper holder includes an upper rack that is engaged with the first pinion, and
wherein the lower holder includes a lower rack that is engaged with the second pinion.

14. A blower, comprising:
a fan that generates a flow of air;
a lower body that includes an internal space in which the fan is installed, and a suction hole providing air to the fan;
a first upper body that is positioned above the lower body, communicates with the internal space of the lower body, and has a surface at which a first discharge hole is formed;
a second upper body that is positioned above the lower body, communicates with the internal space of the lower body, and having one surface at which a second discharge hole is formed;
a first damper that is movably coupled to the first upper body to selectively penetrate the surface of the first upper body, the first damper having a first end facing a space formed between the surfaces of the first upper body and the second upper body, and a second end opposite to the first end;
a second damper that is movably coupled to the second upper body to selectively penetrate the surface of the second upper body, the second damper having a first end facing the space and a second end opposite to the first end; and
a first bar extending along and coupled to the second end of the first damper, the first bar including,
a first wall facing the second end of the first damper;
a second wall extending from a first end of the first wall and facing an outer surface of the first damper; and
a third wall extending from a second end of the first wall and facing an inner surface of the first damper.

15. The blower of claim 14 , wherein the first damper has an arc-shaped cross-section and is movable in a length direction of the first damper, and
wherein the first bar is detachably coupled to the first damper due to an elastic force applied by the second wall and the third wall to the first damper.

16. The blower of claim 4 , wherein a radius of curvature of the outer surface of the first damper is greater than a radius of curvature of the inner surface of the first damper,
wherein the first damper includes a protrusion that protrudes from the outer surface of the first damper toward the second wall and is adjacent to the second end of the first damper, and
where

Assignees

• Lg Electronics Inc

Inventors

• Lee Kunyoung
• Kim Sumin
• Kim Bohyun
• Ku Myungjin

Classifications

• F04D29/524 Primary

  shiftable members for obturating part of the flow path · CPC title

• F04D19/002

  Axial flow fans · CPC title

• F04D25/06

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

• F04D25/08 Primary

  the working fluid being air, e.g. for ventilation · CPC title

• F04D29/703

  specially for fans, e.g. fan guards · CPC title