Flow generating device

Patent metadata

Field	Value
Publication number	US-12061015-B2
Application number	US-201917055759-A
Country	US
Kind code	B2
Filing date	May 14, 2019
Priority date	May 16, 2018
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

The present invention relates to a flow generating device. The flow generating device according to an embodiment of the present invention includes: a suction portion configured to suction air; a fan configured to introduce the air suctioned into the suction portion in an axial direction so as to discharge the suctioned air in a radial direction; a fan housing including a housing plate configured to support the fan, a guide wall protruding from one surface of the housing plate to surround at least a portion of an outer circumference of the fan, and a discharge portion disposed outside the guide wall; a cover configured to surround the fan and the fan housing; and at least one heater disposed between the outer circumference of the fan and the cover.

First claim

The invention claimed is:

1. A flow generating device comprising:
a suction portion configured to suction air;
a fan configured to introduce the air suctioned into the suction portion in an axial direction so as to discharge the suctioned air in a radial direction;
a fan housing comprising:
a housing plate configured to support the fan,
a guide wall protruding from one surface of the housing plate to surround at least a portion of an outer circumference of the fan, and
a discharge portion disposed outside the guide wall;

a cover configured to surround the fan and the fan housing; and
at least one heater disposed between the outer circumference of the fan and the cover,
wherein the at least one heater comprises:
a first heater, and
a second heater spaced apart from the first heater, the second heater being disposed behind the first heater in a flow direction of the suctioned air.

2. The flow generating device according to claim 1 , wherein a first fan passage is provided between at least a portion of the outer circumference of the fan and the guide wall, a second fan passage configured to allow air passing through the first fan passage to flow to the discharge portion is provided between the outer circumference of the fan and the cover, and the heater is disposed in the second fan passage.

3. The flow generating device according to claim 1 , wherein a safety grill is installed on the discharge portion.

4. The flow generating device according to claim 1 , wherein the heater comprises a positive temperature coefficient (PTC) heater.

5. The flow generating device according to claim 1 , wherein the heater is mounted on the housing plate.

6. The flow generating device according to claim 1 , wherein the heater does not overlap with the guide wall in the radial direction of the fan.

7. The flow generating device according to claim 1 , wherein a distance between the first heater and the second heater is about three times or more and about 5 times or less a width of the first heater or a width of the second heater.

8. The flow generating device according to claim 1 , wherein a distance between the discharge portion and the second heater is about 1.5 times or more a width of the second heater.

9. The flow generating device according to claim 1 , wherein:
a first inclined portion extending to be inclined toward the housing plate along the flow direction of the air is disposed at one side of the guide wall,
a second inclined portion cut off to be inclined toward the housing plate along the flow direction of the air is disposed at the other side of the guide wall, and
a distance between the first heater and the second heater is greater than each of a distance between the first inclined portion and the first heater and a distance between the second inclined portion and the second heater.

10. The flow generating device according to claim 1 , wherein an angle between the first heater and the second heater with respect to a rotation axis of the fan is about 50 degrees or more.

11. A flow generating device comprising:
a lower module connected to a leg; and
an upper module disposed above the lower module,
wherein each of the lower module and the upper module comprises:
a suction portion configured to suction air;
a fan configured to introduce the air suctioned into the suction portion in an axial direction so as to discharge the suctioned air in a radial direction;
a fan housing comprising:
a housing plate configured to support the fan,
a guide wall protruding from one surface of the housing plate to surround at least a portion of an outer circumference of the fan, and
a discharge portion disposed outside the guide wall;

a cover configured to surround the fan and the fan housing; and
at least one heater disposed between the outer circumference of the fan and the cover,

wherein the heater of the upper module is disposed above the housing plate of the upper module, and
wherein the heater of the lower module is disposed below the housing plate of the lower module.

12. The flow generating device according to claim 11 , wherein the heater of the upper module and the heater of the lower module overlap each other in a vertical direction.

Assignees

• Lg Electronics Inc

Inventors

• Lee Changhoon
• Choi Seokho

Classifications

• F24H2250/04

  Positive temperature coefficients [PTC]; Negative temperature coefficients [NTC] · CPC title

• F24H9/1872

  PTC resistor · CPC title

• F24F2221/34

  Heater, e.g. gas burner, electric air heater · CPC title

• F04D29/703

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

• F04D29/582

  specially adapted for elastic fluid pumps · CPC title