Cooling system with a variable maximum operation level

• US 7,249,718 B2
• Filed: 07/20/2004
• Issued: 07/31/2007
• Est. Priority Date: 07/20/2004
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Beitelmal, Abdlmonem H., Malone, Christopher G., Patel, Chandrakant D.
• Primary Examiner(s): NORMAN, MARC E
• Application Number:
  US10/894,290
• Publication Number:
  US 20060016901A1
• Time in Patent Office: 1,106 Days
• Field of Search: 236/49.3, 621/78, 621/80, 621/86, 622/592, 361/687, 361/688, 361/689, 361/690, 361/694, 361/695
• US Class Current: 236/49.3
• CPC Class Codes: H05K 7/20209 Thermal management, e.g. fan control

Abstract

A cooling system for an electronic system having at least one heat-generating component includes at least one fan and an operation level setting mechanism. The at least one fan is configured to blow air through the electronic system to thereby dissipate heat generated by the heat-generating component. The operation level setting mechanism is configured to set maximum operation level of the at least one fan, wherein the maximum operation level is based on one or more characteristics of the at least one heat-generating component.

Claims

1. A cooling system for an electronic system having at least one heat-generating component, the cooling system comprising:

one or more fans, said one or more fans being configured to blow air through the electronic system to thereby dissipate heat generated by the at least one heat-generating component; and

an operation level setting mechanism, said mechanism being configured to set a maximum operation level of the one or more fans, wherein the maximum operation level is based on at least one of a number and a type of the at least one heat-generating component contained in the electronic system.

2. The cooling system of claim 1, wherein the maximum operation level comprises a maximum speed of at least one of the one or more fans.

3. The cooling system of claim 1, wherein said one or more fans comprises at least two fans, and the maximum operation level comprises a number of said at least two fans enabled to operate.

4. The cooling system of claim 1, wherein the maximum operation level of the one or more fans is less than a maximum possible operation of the one or more fan.

5. The cooling system of claim 1, wherein said mechanism is further configured to set the maximum operation level of the one or more fans based upon a change to the configuration of the at least one heat-generating component in the electronic system.

6. The cooling system of claim 1, wherein said mechanism is configured to set the maximum operation level of said one or more fans based on a look up table listing maximum operation levels of the one or more fans corresponding to configurations of the at least one heat-generating component.

7. The cooling system of claim 1, wherein said mechanism is further configured to set an operation level of said one or more fans, said operation level comprising a level of operation of said one or more fans between and including said one or more fans being off and said one or more fans operating at said maximum operation level.

8. The cooling system of claim 7, wherein said mechanism is further configured to set said operation level of said one or more fans based on one or more measured temperature differences in the electronic system.

9. The cooling system of claim 8, further comprising:

an inlet temperature sensor and an outlet temperature sensor, wherein the measured temperature difference comprises the difference in measurement between a temperature measured by the inlet temperature sensor and a temperature measured by the outlet temperature Sensor.

10. The cooling system of claim 8, wherein the one or more fans is configured to operate at the operation level in response to the measured temperature difference exceeding a triggering temperature difference.

11. The cooling system of claim 10, wherein the triggering temperature difference comprises at least one of a user defined triggering temperature difference and a preset triggering temperature difference.

12. The cooling system of claim 7, wherein said mechanism is further configured to set said operation level of said one or more fans based on detected temperatures of one or more components contained in the electronic system.

13. The cooling system of claim 1, wherein said mechanism comprises at least one of a software application and firmware.

14. An electronic system, said electronic system comprising:

at least one heat-generating component; and

a cooling system comprising;

one or more fans, said one or more fans being configured to blow air through the electronic system to thereby dissipate heat generated by the at least one beat-generating component, and

an operation level setting mechanism, said mechanism being configured to set maximum operation levels of the one or more fans, wherein the maximum operation levels are based on at least one of a number and a type of heat-generating components contained in the electronic system, and wherein the maximum operation levels of the one or more fans is less than a maximum possible operation of the one or more fans.

15. The electronic system of claim 14, further comprising at least one processor board on which said at least one heat-generating component is mounted, wherein said mechanism is configured to determine maximum operation levels of the one or more fans based on a configuration of said at least one processor board.

16. The electronic system of claim 14, further comprising at least one server in which said at least one heat-generating component is housed, wherein said mechanism is configured to determine maximum operation levels of the one or more fans based on a configuration of the at least one server.

17. A method of controlling a cooling system to dissipate heat generated by at least one heat-generating component in an electronic system, said method comprising:

determining at least one of a number and a type of the at least one heat-generating component contained in the electronic system;

setting a maximum operation level of a cooling system comprising one or more fans based on the determined at least one of the number and the type of the at least one heat-generating component; and

operating the one or more fans at operation levels less than or equal to the maximum operation level.

18. The method of claim 17, wherein the step of setting the maximum operation level further comprises setting the maximum operation level of the one or more fans to a level that is less than a maximum possible operation level of the one or more fans.

19. The method of claim 17, wherein to stop of determining at least one of the number and the type of the at least one heat-generating component comprises receiving user input regarding the at least one of the number and the type of the at least one heat-generating component.

20. The method of claim 17, wherein the step of setting the maximum operation levels comprises setting a maximum speed of at least one of the one or more fans.

21. The method of claim 17, wherein the one or more fans comprise at least two fans, and wherein the step of setting the maximum operation levels comprises enabling one or more of the at least two fans to operate.

22. The method of claim 17, further comprising re-setting the maximum operation levels of the one or more fans in response to a change in at least one of the number and the type of the at least one heat-generating component contained in the electronic system.

23. The method of claim 17, wherein the step of setting the maximum operation levels of the one or more fans comprises setting the maximum operation levels of the one or more fans based on a look up table listing maximum operation levels of the one or more fans corresponding to various configurations of at least one of the number and the type of the at least one heat-generating component contained in the electronic system.

24. The method of claim 17, further comprising setting the operation levels of the one or more fans at levels between the one or more fans being off and the maximum operation levels.

25. The method of claim 17, further comprising setting the operation levels of the one or more fans based on one or more measured temperature differences in the electronic system.

26. The method of claim 17, further comprising:

measuring an inlet temperature at an inlet position of the electronic system; and

measuring an outlet temperature at an outlet position of the electronic system, wherein the measured temperature difference comprises the difference in measurement between the inlet temperature and the outlet temperature.

27. The method of claim 26, wherein the stop of operating the one or more fans at the operation levels comprises operating the one or more fans at the operation levels in response to the measured temperature difference exceeding a triggering temperature difference.

28. The method of claim 26, further comprising receiving a user input triggering temperature.

29. The method of claim 26, wherein the triggering temperature difference comprises a preset triggering temperature difference.

30. The method of claim 17, further comprising setting the operation levels of the one or more fans based on detected temperatures of one or more components contained in the electronic system.

31. A system for controlling a cooling system to dissipate heat generated by at least one beat-generating component in an electronic system, said system comprising:

means for determining at least one of a number and a type of the at least one heat-generating component contained in the electronic system;

means for setting a maximum operation level of a cooling system comprising one or more fans based on the determined at least one of the number and the type of the at least one heat-generating component, wherein the maximum operation level of the one or more fans is less than a maximum possible operation of the one or more fans; and

means for operating the one or more fans at an operation level less than or equal to the maximum operation level.

32. The system of claim 31, further comprising means for setting the operation levels of the one or more fans at levels between the one or more fans being off and the maximum operation level.

33. The system of claim 31, further comprising means for setting the operation levels of the one or more fans based on one or more measured temperature differences in the electronic system.

34. The system of claim 33, further comprising:

means for measuring an inlet temperature at an inlet position of the electronic system; and

means for measuring an outlet temperature at an outlet position of the electronic system, wherein the measured temperature difference comprises the difference in measurement between the inlet temperature and the outlet temperature.

35. The system of claim 31, further comprising:

means for setting the operation levels of the one or more fans based on detected temperatures of one or more components contained in the electronic system.

36. A computer readable storage medium on which is embedded one or more computer programs, said one or more computer programs implementing a method for controlling a cooling system to dissipate heat generated by at least one heat-generating component in an electronic system, said one or more computer programs comprising a set of instructions for:

determining at least one of a number and a type of the at least one heat-generating component in the electronic system;

setting a maximum operation level of a cooling system comprising one or more fans based on the determined at least one of the number and the type of the at least one heat-generating component, wherein the maximum operation level of the one or more fans is less than a maximum possible operation of the one or more fans; and

operating the one or more fans at operation levels less than or equal to the maximum operation level.