INTEGRATED FAN

• US 20120070277A1
• Filed: 09/15/2011
• Published: 03/22/2012
• Est. Priority Date: 09/16/2010
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Chen, Lee-Long, Wang, Zse-Hsin, Huang, Chien-Hsiung
• Granted Patent: US 9,057,384 B2
• Time in Patent Office: Days
• US Class Current: 415/224
• CPC Class Codes: F04D 25/08 the working fluid being air, e.g. for ventilation
• CPC Class Codes: F04D 29/4226 Fan casings
• CPC Class Codes: F04D 29/441 especially adapted for elastic fluid pumps

Abstract

An integrated fan includes a centrifugal blade unit and a frame. The centrifugal blade unit has a hub. The frame is used for accommodating the centrifugal blade unit. The frame includes a first casing, a second casing and at least one airflow-guiding plate. The first casing includes a main plate and an airflow inlet, wherein the airflow inlet is disposed in the main plate and aligned with the hub. The second casing is opposed to the main plate of the first casing. The at least one airflow-guiding plate is aslant and externally extended from an edge of the main plate. The airflow-guiding plate, the first casing and the second casing collectively define an airflow output channel. An included angle between an airflow-leaving direction of the airflow output channel and an airflow-entering direction of the airflow inlet is ranged between 90 and 180 degrees.

Claims

1. An integrated fan for use in a cooling device, said integrated fan comprising:

a centrifugal blade unit having a hub; and

a frame for accommodating said centrifugal blade unit, wherein said frame comprises;

a first casing comprising a main plate and an airflow inlet, wherein said airflow inlet is disposed in said main plate and aligned with said hub;

a second casing opposed to said main plate of said first casing; and

at least one airflow-guiding plate aslant and externally extended from an edge of said main plate, wherein said airflow-guiding plate, said first casing and said second casing define an airflow output channel,

wherein an included angle between an airflow-leaving direction of said airflow output channel and an airflow-entering direction of said airflow inlet is ranged between 90 and 180 degrees.

2. The integrated fan according to claim 1, wherein said cooling device is an air-cooled heat exchanger.

3. The integrated fan according to claim 1, wherein said airflow-guiding plate is integrally formed with said main plate of said first casing.

4. The integrated fan according to claim 1, wherein said first casing further comprises a first lateral plate, a second lateral plate and a third lateral plate, which are vertically extended from other edges of said main plate, respectively, wherein said first lateral plate is interconnected between said second lateral plate and said third lateral plate, and said second lateral plate and said third lateral plate are opposed to each other.

5. The integrated fan according to claim 4, wherein said airflow-guiding plate is interconnected between said second lateral plate and said third lateral plate, and opposed to said first lateral plate.

6. The integrated fan according to claim 1, wherein an included angle between said airflow-guiding plate and said main plate is ranged between 90 and 180 degrees.

7. The integrated fan according to claim 1, wherein said airflow output channel is partially aligned with an outer periphery of said centrifugal blade unit.

8. An integrated fan for use in a cooling device, said integrated fan comprising:

a centrifugal blade unit having a hub; and

a frame for accommodating said centrifugal blade unit, wherein said frame comprises;

a first casing comprising a main plate and an airflow inlet, wherein said airflow inlet is disposed in said main plate and aligned with said hub;

a second casing opposed to said main plate of said first casing; and

plural airflow-guiding plates aslant and externally extended from plural edges of said main plate and connected with said second casing, wherein every two adjacent airflow-guiding plates, said first casing and said second casing define an airflow output channel,

wherein an included angle between an airflow-leaving direction of said airflow output channel and an airflow-entering direction of said airflow inlet is ranged between 90 and 180 degrees.

9. The integrated fan according to claim 8, wherein said second casing has plural apertures, and each of said apertures is in communication with a corresponding airflow output channel.

10. The integrated fan according to claim 9, wherein said second casing further comprises a central part and plural extension parts, wherein said central part is aligned with said centrifugal blade unit for partially sheltering said centrifugal blade unit.

11. The integrated fan according to claim 10, wherein said extension parts are externally extended from said central part, and said plural apertures are defined by said extension parts and said central part.

12. The integrated fan according to claim 8, wherein an included angle between said airflow-guiding plate and said main plate is ranged between 90 and 180 degrees.