Information handling system handle with integrated thermal rejection system

Patent metadata

Field	Value
Publication number	US-11320876-B1
Application number	US-202017113509-A
Country	US
Kind code	B1
Filing date	Dec 7, 2020
Priority date	Dec 7, 2020
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A portable information handling system housing has a handle to aid an end user in carrying of the system. A heat pipe loop passes through the handle and couples to a processing component heat sink to transfer excess thermal energy from within the housing to the handle for rejection to the ambient environment. Thermal wax disposed in the handle stores energy with a phase change from a solid to a liquid state. A color indicator disposed on the handle provides an end user with an indication of a temperature of the handle.

First claim

What is claimed is:

1. An information handling system comprising:
a portable housing having a handle;
a processor disposed in the housing and operable to execute instructions that process information;
a memory disposed in the housing and interfaced with the processor, the memory operable to store the instructions and information;
a display integrated in the portable housing and operable to present the information as visual images;
a graphics processor unit interfaced with the processor and the display, the graphics processor operable to process the information to generate pixel values that define visual images for presentation at the display;
a loop heat pipe interfaced with a heat sink disposed in the housing and routed from the heat sink through the handle and back to the heat sink; and
a phase change material disposed in the handle and operable to capture thermal energy from the loop heat pipe by transitioning from a solid state to a liquid state.

2. The information system of claim 1 wherein the loop heat pipe comprises a vapor chamber having a fluid that vaporizes at the heat sink to absorb thermal energy and condenses in the handle to release the thermal energy.

3. The information handling system of claim 2 wherein the heat sink couples to the processor to communicate the thermal energy from the processor to the loop heat pipe.

4. The information handling system of claim 2 wherein the heat sink couples to the graphics processor to communicate the thermal energy from the graphics processor to the loop heat pipe.

5. The information handling system of claim 1 wherein the phase change material comprises wax.

6. The information handling system of claim 5 further comprising a graphene sheet disposed around the wax.

7. The information handling system of claim 6 further comprising:
a cooling fan integrated in the portable housing;
wherein:
the handle rotates between a planar configuration when the portable housing is closed and a perpendicular configuration when the portable housing is open; and
an exhaust of the cooling fan moves to align with the handle in the planar and perpendicular configurations.

8. The information handling system of claim 1 wherein:
the heat sink couples to one of the processor or the graphics processor;
the loop heat pipe couples to a first cooling fin;
another of the processor or graphics processor thermally interfaces with a second cooling fin; and
the first and second cooling fins selectively contact each other and separate from each other.

9. A method for managing thermal energy generated at an information handling system, the method comprising:
thermally interfacing a processing component of the information handling system with a heat pipe;
routing the heat pipe through a handle of a housing of the information handling system;
transferring thermal energy from the processing component through the heat pipe to the handle for rejection to an external environment;
disposing a phase change material in the handle;
absorbing the thermal energy by transitioning the phase change material from a solid state to a liquid state; and
releasing the thermal energy by transitioning the phase change material from the liquid state back to the solid state.

10. The method of claim 9 wherein the processing component comprises a central processing unit.

11. The method of claim 9 wherein the processing component comprises a graphics processing unit.

12. The method of claim 9 wherein the phase change material comprises an organic thermal wax.

13. The method of claim 9 further comprising presenting a color indication at the handle associated with a temperature of the phase change material.

14. The method of claim 13 further comprising:
changing an orientation of the handle relative to the housing; and
adjusting an orientation of a cooling fan exhaust to remain aligned with the orientation of the housing.

15. A thermal management system comprising:
a heat sink configured to receive thermal energy from a processing component;
a heat pipe loop interfaced with of the heat sink at first and second ends of the heat pipe loop;
a handle configured to couple to an information handling system housing, the heat pipe loop passing through the handle; and
a thermal wax disposed in the handle proximate the heat pipe loop, the thermal wax transitioning from a solid phase to a liquid phase to store excess thermal energy.

16. The thermal management system of claim 15 further comprising a color indicator disposed at the handle and operable to indicate plural colors, each color associated with a temperature of the handle.

17. The thermal management system of claim 15 further comprising a graphene sheet disposed around the thermal wax.

Assignees

• Dell Products Lp

Inventors

• North Travis C
• Files Jace W
• Morrison John Trevor

Classifications

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F1/325

  Power saving in peripheral device · CPC title

• G06F1/3231

  Monitoring the presence, absence or movement of users · CPC title

• G06F1/203 Primary

  for portable computers, e.g. for laptops · CPC title

• G06F1/1688

  the I/O peripheral being integrated loudspeakers · CPC title