COMPUTER DEVICE WITH LOW ACOUSTIC NOISE

• US 20110063795A1
• Filed: 10/22/2009
• Published: 03/17/2011
• Est. Priority Date: 09/11/2009
• Status: Active Grant

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: YEH, CHIN-WEN, LIN, ZHEN-NENG
• Granted Patent: US 7,990,701 B2
• Time in Patent Office: Days
• US Class Current: 361/679.48
• CPC Class Codes: G06F 1/182 with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
• CPC Class Codes: G06F 1/20 Cooling means

Abstract

A computer system includes a chassis with a fan installed therein, a cover plate adapted to be attached to the chassis, and a noise absorber attached to the cover plate. The fan is capable of generating an amount of air flow for cooling at least a component in the chassis. The noise absorber includes a plurality of protrusions facing the fan and capable of damping the air flow that impacts the cover plate and decreasing an acoustic noise level of the computer system.

Claims

1. A computer device comprising:

a chassis with a fan installed therein, the fan capable of generating an amount of air flow for dissipating heat from a heat generating component in the chassis;

a cover plate adapted to be attached to the chassis; and

a noise absorber attached to the cover plate, the noise absorber comprising a plurality of protrusions facing the fan and capable of damping the air flow that impacts the cover plate.

2. The computer device of claim 1, wherein the noise absorber comprises a flat bottom attached to the cover plate, the protrusions extend from the flat bottom towards the fan.

3. The computer device of claim 2, wherein protrusions of the noise absorber are regularly wave-shaped.

4. The computer device of claim 2, wherein the noise absorber is larger than an air outlet of the fan and capable of fully covering the fan and damping the air flow that impacts the cover plate.

5. The computer device of claim 2, wherein the air outlet of the fan is circular, the bottom of the noise absorber is square, and a width of the noise absorber is greater than a diameter of the circular air outlet of the fan.

6. The computer device of claim 1, wherein a plurality of conductive foams is attached between the cover plate and the chassis for preventing electro-magnetic interference and dampening vibration.

7. A computer device comprising:

a chassis with a fan installed therein, the fan is capable of generating an amount of air flow for dissipating heat from a heat generating component in the chassis;

a cover plate adapted to be attached to the chassis; and

a noise absorber attached to the cover plate and capable of damping the air flow directed towards the cover plate and decrease an acoustic noise level of the computer system; and

a plurality of conductive foams attached between the cover plate and the chassis.

8. The computer device of claim 7, wherein the noise absorber comprises a flat bottom attached to the cover plate and a plurality of protrusions extending from the flat bottom towards the fan.

9. The computer device of claim 8, wherein protrusions of the noise absorber are regularly wave-shaped.

10. The computer device of claim 8, wherein the noise absorber is larger than an air outlet of the fan and capable of fully covering the fan for damping the air flow that impacts the cover plate.

11. The computer device of claim 10, wherein the air outlet of the fan is circular, the bottom of the noise absorber is square, and a width of the noise absorber is greater than a diameter of the circular air outlet of the fan.

12. The computer device of claim 7, further comprising a system fan attached to a rear panel of the chassis, the noise absorber is in proximity to the system fan.