Carbon fiber laminate piezoelectric cooler and method therefor

• US 9,422,944 B2
• Filed: 08/15/2014
• Issued: 08/23/2016
• Est. Priority Date: 08/15/2014
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Woo, Joohyun, Aurongzeb, Deeder M.
• Primary Examiner(s): Hoffberg, Robert J
• Assistant Examiner(s): MATEY, MICHAEL A
• Application Number:
  US14/460,974
• Publication Number:
  US 20160048180A1
• Time in Patent Office: 739 Days
• US Class Current: 1/1
• CPC Class Codes: F04D 33/00 Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type F04D35/00 takes precedence; hand-held fans A45B
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: G06F 1/203 for portable computers, e.g. for laptops
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 11/327 Alarm or error message display
• CPC Class Codes: H01L 23/467 by flowing gases, e.g. air H01L23/473 takes precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

An opening at a first carbon fiber sheet is provided, the opening extending through the sheet from a first major surface to a second major surface, the opening defining two sides and a first end of a rectangular flap, a second end of the flap remaining rooted in the first carbon fiber sheet. A piezoelectric transducer is bonded to the first carbon fiber sheet, the transducer proximate to the second end of the flap. A controller including a signal generator is coupled to the piezoelectric transducer, the piezoelectric transducer to excite sympathetic vibration of the flap.

Claims

1. An apparatus comprising:

a first vibrating element including;

a flap formed in a first carbon fiber sheet, two sides and a first end of the flap defined by an opening extending through the sheet from a first major surface to a second major surface, a second end of the flap remaining rooted in the fiber sheet; and

a piezoelectric transducer bonded to the first carbon fiber sheet adjacent to the second end of the flap.

2. The apparatus of claim 1, further comprising:

a controller including a signal generator coupled to the piezoelectric element, the controller to control the piezoelectric transducer to excite sympathetic vibration of the flap.

3. The apparatus of claim 1, wherein the portion of the opening corresponding to the first end of the flap descends at an acute angle relative to the first major surface and exits at the second major surface opposite the root of the flap.

4. The apparatus of claim 1, wherein the portion of the opening corresponding to the two sides and the first end of the flap are perpendicular to the first and the second major surface.

5. The apparatus of claim 1, further comprising:

a second carbon fiber sheet bonded to the second major surface of the first carbon fiber sheet, the bonding excluding the area coincident with the flap.

6. The apparatus of claim 1, further comprising:

an airflow sensor; and

a controller coupled to the vibrating element, the controller to regulate operation of the vibrating element based on information provided by the airflow sensor.

7. The apparatus of claim 1, further comprising:

a memory device to store a cooling profile; and

a controller coupled to the vibrating element and the memory device, the controller to regulate operation of the vibrating element based on the cooling profile.

8. The apparatus of claim 7, wherein vibrating element is included at an information handling system and wherein the cooling profile associates an operating configuration of the vibrating element with a first application program executing at the information handling system.

9. The apparatus of claim 1, wherein the first carbon fiber sheet is one of a plurality of laminated layers, an intermediate layer including a thermoplastic material to dampen propagation of vibration from the first layer to an outermost layer of the laminated layers.

10. The apparatus of claim 1, wherein the first carbon fiber sheet is one of a plurality of laminated layer forming a component of an enclosure of an information handling system.

11. The apparatus of claim 1, further comprising:

a second vibrating element including;

a second flap formed in the first carbon fiber sheet, two sides and one end of the second flap defined by a second opening extending through the sheet from the first major surface to the second major surface, a second end of the second flap remaining rooted in the fiber sheet; and

a second piezoelectric transducer bonded to the first carbon fiber sheet adjacent to the second end of the second flap.

12. The apparatus of claim 11, further comprising:

a plurality of temperature sensors; and

a controller coupled to each of the temperature sensor and to the first and second vibrating element, the controller to;

adjust operation of the vibrating element in response to temperature information provided by the a temperature sensor closest to the vibrating element.

13. An apparatus comprising:

a first vibrating element including;

a flap formed in a first carbon fiber sheet, two sides and a first end of the flap defined by an opening extending through the sheet from a first major surface to a second major surface, a second end of the flap remaining rooted in the fiber sheet; and

a piezoelectric transducer bonded to the first carbon fiber sheet adjacent to the second end of the flap.

14. The method of claim 13, wherein the portion of the opening corresponding to the first end of the flap descends at an acute angle relative to the first major surface and exits at the second major surface opposite the root of the flap.

15. The method of claim 13, wherein the portion of the opening corresponding to the two sides and the first end of the flap are perpendicular to the first and the second major surface.

16. The method of claim 13, further comprising:

a second carbon fiber sheet bonded to the second major surface of the first carbon fiber sheet, the bonding excluding the area coincident with the flap.

17. An information handling system comprising:

a laminated enclosure component including;

a first carbon fiber sheet including a rectangular flap, two sides and a first end of the flap defined by an opening extending through the sheet from a first major surface to a second major surface, the second end of the flap remaining rooted in the fiber sheet;

a second carbon fiber sheet bonded to the second major surface of the first carbon fiber sheet, the bonding excluding the area coincident with the flap; and

a piezoelectric transducer bonded to the first carbon fiber sheet adjacent to the second end of the flap.

18. The information handling system of claim 17, further comprising:

a controller including a signal generator coupled to the piezoelectric transducer, the controller to control the piezoelectric element to excite sympathetic vibration of the flap.

19. The information handling system of claim 17, wherein the portion of the opening corresponding to the first end of the flap descends at an acute angle relative to the first major surface and exits at the second major surface opposite the root of the flap.

20. The information handling system of claim 17, wherein the portion of the opening corresponding to the two sides and the first end of the flap are perpendicular to the first and the second major surface.