Air cleaner

Patent metadata

Field	Value
Publication number	US-2020332701-A1
Application number	US-202016919508-A
Country	US
Kind code	A1
Filing date	Jul 2, 2020
Priority date	Feb 26, 2016
Publication date	Oct 22, 2020
Grant date	—

Abstract

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

First claim

What is claimed is:

1 . An air cleaner, comprising:
a centrifugal fan; a circulator disposed at an upper side of the centrifugal fan, the circulator being configured to adjust a direction of air that passes through the centrifugal fan, the circulator including:
an introduction grill into which air passing through the centrifugal fan is introduced;
a fan housing provided above the introduction grill; and
a circulation fan provided within a space defined by the introduction grill and the fan housing;
an air guide configured to guide a flow of air passing through the centrifugal fan, the air guide defining an air flow path; and

a discharge guide provided on an upper side of the air guide and guiding air passing through the air guide to the introduction grill, the discharge guide including:
a discharge inner wall including an inner circumferential surface having a cylindrical shape; a discharge outer wall that surrounds the discharge inner wall; a discharge flow path defined between an inner circumferential surface of the discharge outer wall and an outer circumferential surface of the discharge inner wall and passing air flowing upward by the air flow path; and
a discharge grill disposed in the discharge flow path, the discharge grill being extended from the outer circumferential surface of the discharge inner wall to the inner circumferential surface of the discharge outer wall,

wherein the discharge grill is formed in a concave shape in the downward direction corresponding to a shape of the introduction grill.

2 . The air cleaner according to claim 1 , wherein the circulator rotates a clockwise direction or a counterclockwise direction with respect to an axial direction of the circulator.

3 . The air cleaner according to claim 2 , wherein the circulator further includes a rotation guide provided on a lower side of the instruction grill to guide rotation of the circulator in the clockwise direction or the counterclockwise direction.

4 . The air cleaner according to claim 3 , wherein the air guide further includes:
a cylindrical outer wall forming an outer circumferential surface of the air guide; a cylindrical inner wall positioned at an inside of the outer wall and forming an inner circumferential surface of the air guide; and
a guide rib disposed in the air flow path, the guide rib being configured to extend longitudinally and allow the air discharged in a radial direction through the centrifugal fan to flow upward, wherein the air flow path is defined between an inner circumferential surface of the cylindrical outer wall and an outer circumferential surface of the cylindrical inner wall.

5 . The air cleaner according to claim 4 wherein the air guide further includes a motor accommodating portion that extends downward from the cylindrical inner wall, the motor accommodation portion being configured to accommodate a fan motor of the centrifugal fan.

6 . The air cleaner according to claim 5 , wherein the motor accommodating portion has a bowl shape to define a space in which the fan motor is provided.

7 . The air cleaner according to claim 5 , wherein the rotation guide includes a first gear motor generating a drive force and a first gear rotatably coupled to the first gear motor.

8 . The air cleaner according to claim 7 , wherein the air guide further includes a rack provided at the motor accommodating portion to communicate with the first gear, wherein the rack is configured to guide rotation of the circulator in the clockwise direction or the counterclockwise direction.

9 . The air cleaner according to claim 8 , wherein the air guide further includes a shaft guide groove into which a gear shaft of the first gear is inserted, the shaft guide groove having an arc shape.

10 . The air cleaner according to claim 3 , wherein the discharge guide further includes a rotation guide plate coupled to the discharge inner wall and having a shaft inserting portion.

11 . The air cleaner according to claim 10 , wherein the circulator further includes a rotational shaft inserted into the shaft inserting portion, to provide a rotational center in the clockwise direction or the counterclockwise direction, with respect to the axial direction of the circulator.

12 . The air cleaner according to claim 1 , wherein the discharge flow path is configured to allow air passing through the air flow path to flow into the circulator.

13 . The air cleaner according to claim 1 , wherein the air guide is fixed and the circulator is movable.

14 . The air cleaner according to claim 4 , wherein the guide rib includes a plurality of guide ribs arranged in a circumferential direction with respect to a center of the air guide.

15 . The air cleaner according to claim 4 , wherein the air guide further includes a rack is provided on the cylindrical inner wall of the air guide.

16 . The air cleaner according to claim 15 , wherein the rack extends roundly in a circumferential direction of the air guide.

17 . The air cleaner according to claim 8 , wherein the rotation guide plate extends partially along the circumferential direction of the discharge inner wall to form a space where the rack and the first gear are coupled.

18 . The air cleaner according to claim 8 , wherein the rotation guide plate extends along a circumferential direction of the discharge inner wall to form a space in which the rack and the first gear are coupled and a space in which a bearing provided in the circulator moves.

19 . The air cleaner according to claim 10 , wherein the rotation guide further includes a bearing that supports rotation in the clockwise direction or a counterclockwise direction of the circulator.

20 . The air cleaner according to claim 19 , wherein the rotation guide plate includes a bearing groove formed in a circumferential direction to insert the bearing.

Assignees

• Lg Electronics Inc

Inventors

• Park Jaekyun
• Ha Hyunpil
• Jung Soonki
• Mun Yeongcheol
• Bae Soohyun

Classifications

• F24F8/80

  Self-contained air purifiers · CPC title

• F01P7/167

  by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed · CPC title

• B01D46/58

  connected in parallel · CPC title

• G05D23/303

  using a sensing element having a resistance varying with temperature, e.g. thermistor · CPC title

• G05D23/30

  Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature · CPC title