Automatic fan speed control

• US 5,249,741 A
• Filed: 05/04/1992
• Issued: 10/05/1993
• Est. Priority Date: 05/04/1992
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Johnson, William C., Peterson, James M., Bistline, William R.
• Primary Examiner(s): Wayner, William E.
• Application Number:
  US07/878,115
• Time in Patent Office: 519 Days
• Field of Search: 236/49.3, 236/DIG. 9, 361/384, 361/385, 454/184, 357/81, 363/141, 165/80.3, 165/80.4, 62/186, 62/259.3
• US Class Current: 236/49.3
• CPC Class Codes: G05D 23/1906 using an analogue comparing device
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: H05K 7/20209 Thermal management, e.g. fan control
• CPC Class Codes: Y10S 236/09 Fan control

Abstract

A method of cooling a computer having a plurality of components and at least one variable rate cooling unit including the steps of obtaining a cooling requirement for at least one of the components and varying the rate of at least one of the cooling units based on the obtained cooling requirements. In addition an apparatus for cooling a computer having a plurality of components, the apparatus including at least one variable rate cooling unit, an apparatus for obtaining a cooling requirement for at least one of the components, and an apparatus for varying the rate of at least one of the cooling units based on the obtained cooling requirements.

Claims

1. A method of cooling a computer having a plurality of components and at least one variable rate a fan cooling unit comprising the steps of:

a) obtaining a predetermined cooling requirement for at least one of said components; and

b) varying the rate of at least one of said cooling units based on the obtained cooling requirements.

2. The method of claim 1 wherein the step of obtaining includes the steps of:

a) querying said components for component identifiers; and

b) using said identifiers to obtain cooling requirements for said components.

3. The method of claim 2 wherein said step of varying includes the steps of:

a) determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) setting the rate of at least one of said cooling units based on the determined cooling requirements.

4. The method of claim 3 wherein said step of determining includes accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

5. The method of claim 3 wherein said step of determining includes determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.

6. An apparatus for cooling a computer having a plurality of components, said apparatus comprising:

a) at least one variable rate cooling unit;

b) means for obtaining a predetermined cooling requirement for at least one of said components; and

c) means for varying the rate of at least one of said cooling units based on the obtained cooling requirements.

7. The apparatus of claim 6 wherein the means for obtaining includes:

a) means for querying said components for component identifiers; and

b) using said identifiers to obtain cooling requirements for said components.

8. The apparatus of claim 7 wherein said means for varying includes:

a) means for determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) means for setting the rate of at least one of said cooling units based on the determined cooling requirements.

9. The apparatus of claim 8 wherein said means for determining includes means for accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

10. The apparatus of claim 8 wherein said means for determining includes means for determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.

11. A computer system comprising:

a) a plurality of components including a main processor and a memory; and

b) a cooling system for cooling said plurality of components, said cooling system including;

i) at least one variable rate cooling unit;

ii) means for obtaining predetermined cooling requirements for at least one of said components; and

iii) means for varying the rate of at least one of said cooling units based on the obtained cooling requirements.

16. The computer system of claim 11 wherein the means for obtaining includes:

a) means for querying said components for component identifiers; and

b) using said identifiers to obtain cooling requirements for said components.

17. The computer system of claim 16 wherein said means for varying includes:

a) means for determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) means for setting the rate of at least one of said cooling units based on the determined cooling requirements.

18. The computer system of claim 17 wherein said means for determining includes means for accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

19. The computer system of claim 17 wherein said means for determining includes means for determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.

12. A computer system comprising:

a) a plurality of components including a main processor and a memory; and

b) a cooling system for cooling said plurality of components, said cooling system including;

i) at least one variable rate cooling unit;

ii) means for obtaining predetermined cooling requirements for at least one of said components, said means for obtaining including;

means for querying said components for component identifiers; and

using said identifiers to obtain cooling requirements for said components; and

iii) means for varying the rate of at least one of said cooling units based on the obtained cooling requirements.

13. The computer system of claim 12 wherein said means for varying includes:

a) means for determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) means for setting the rate of at least one of said cooling units based on the determined cooling requirements.

14. The computer system of claim 13 wherein said means for determining includes means for accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

15. The computer system of claim 13 wherein said means for determining includes means for determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.

22. The method of claim 12 wherein said step of determining includes accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

20. A method of cooling a computer having a plurality of components and at least one variable rate cooling unit comprising the steps of:

a) obtaining a cooling requirement for at least one of said components including the steps of;

i) querying said components for component identifiers; and

ii) using said identifiers to obtain cooling requirements for said components; and

b) varying the rate of at least one of said cooling units based on the obtained cooling requirements.

21. The method of claim 20 wherein said step of varying includes the steps of:

a) determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) setting the rate of at least one of said cooling units based on the determined cooling requirements.

23. The method of claim 21 wherein said step of determining includes determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.

24. An apparatus for cooling a computer having a plurality of components, said apparatus comprising:

a) at least one variable rate cooling unit;

b) means for obtaining a cooling requirement for at least one of said components, said means for obtaining including;

i) means for querying said components for component identifiers; and

ii) using said identifiers to obtain cooling requirements for said components; and

c) means for varying the rate of at least one of said cooling units based on the obtained cooling requirements.

25. The apparatus of claim 24 wherein said means for varying includes:

a) means for determining for at least one of said cooling units the cooling requirements for components cooled by said cooling unit; and

b) means for setting the rate of at least one of said cooling units based on the determined cooling requirements.

26. The apparatus of claim 25 wherein said means for determining includes means for accumulating for each cooling unit the cooling requirements for components cooled by said cooling unit.

27. The apparatus of claim 25 wherein said means for determining includes means for determining for each cooling unit the weighted average of the cooling requirements for components cooled by said cooling unit.