Apparatus for tilted serial cooling in an electronic system

• US 5,497,288 A
• Filed: 08/31/1994
• Issued: 03/05/1996
• Est. Priority Date: 08/31/1994
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Dickson, Russell E., Otis, Bruce P.
• Primary Examiner(s): Tolin, Gerald P.
• Application Number:
  US08/298,986
• Time in Patent Office: 552 Days
• Field of Search: 165/122, 165/126, 165/80.3, 454/184, 174/16.1, 257/712, 257/713, 257/721, 257/723, 257/724, 361/685, 361/687, 361/690-695, 361/718-720, 361/724, 361/725, 361/727, 361/735, 361/744, 361/790
• US Class Current: 361/679.46
• CPC Class Codes: H05K 7/20727 within server blades for removing heat from heat source

Abstract

An apparatus that provides a cooling system in which electronic components are serially configured in the air flow path and tilted down to form a "V" formation when viewed from the side. An air moving device draws air from an inlet, serially past first and second components and exhausts air through an outlet. This formation increases the inlet air opening, increases the area to turn the air in between the components, and increases the size of the plenum between the rear components and the air moving device, all without increasing the size of the electronic device. The larger area reduces the resistance of the air flow cooling path by reducing the number of turns and velocity changes of the air flow, which allows the air moving device to be smaller, use less power, and generate less noise.

Claims

1. An electronic device, comprising:

a cabinet having an air inlet, an air outlet, and an air flow path from said air inlet to said air outlet;

a first electronic component assembly having an end closest to said air inlet and an end furthest from said air inlet, said first electronic component assembly being mounted in said air flow path of said cabinet so that said furthest end of said first electronic component assembly is tilted downward, with respect to said closest end of said first electronic component assembly, at an angle of greater than 0 and less than 90 degrees from the horizontal axis of said cabinet;

a second electronic component assembly having an end closest to said air inlet and an end furthest from said air inlet, said second electronic component assembly being mounted serially in said air flow path with respect to said first electronic component assembly so that said closest end of said second electronic component assembly is tilted downward, with respect to said furthest end of said second electronic component assembly, at an angle of between 0 and 90 degrees from the horizontal axis of said cabinet;

means for air pressure balancing disposed in said air flow path above said first electronic component assembly and said second electronic component assembly; and

means for moving air through said air inlet, serially past said first and second electronic component assemblies, and exhausting said air out of said air outlet.

2. The electronic device of claim 1, wherein said first electronic component assembly further comprises a plurality of disk drives mounted in parallel in said cooling path and said second electronic component assembly further comprises a plurality of disk drives mounted in parallel in said cooling path.

3. The electronic device of claim 1, wherein said air inlet is at the front of said cabinet and said air outlet is at the rear of said cabinet.

4. The electronic device of claim 3, wherein said cabinet further comprises a front access panel.

5. The electronic device of claim 3, wherein said cabinet further comprises a rear access panel.

6. The electronic device of claim 1, wherein said means for air pressure balancing further comprises:

a pressure balance plate disposed above and between said first electronic component assembly and said second electronic component assembly; and

a plurality of air vanes for maintaining separation of said cooling path into a plurality of subpaths.

7. A computer system composed of a plurality of interconnected electronic devices stacked vertically, comprising:

a first electronic device;

a second electronic device, stacked above said first electronic device, said second electronic device, comprising;

a cabinet having an air inlet, an air outlet, and an air flow path from said air inlet to said air outlet,

a first electronic component assembly having an end closest to said air inlet and an end furthest from said air inlet, said first electronic component assembly being mounted in said air flow path of said cabinet so that said furthest end of said first electronic component assembly is tilted downward, with respect to said closest end of said first electronic component assembly, at an angle of between 0 and 90 degrees from the horizontal axis of said cabinet,

a second electronic component assembly having an end closest to said air inlet and an end furthest from said air inlet, said second electronic component assembly being mounted serially in said air flow path with respect to said first electronic component assembly so that said closest end of said second electronic assembly is tilted downwards with respect to said furthest end of said second electronic component assembly, at an angle of greater than 0 and less than 90 degrees from the horizontal axis of said cabinet,

means for air pressure balancing disposed in said air flow path above said first electronic component assembly and said second electronic component assembly, and

means for moving air through said air inlet, serially past said first and second electronic components, and exhausting said air out of said air outlet; and

a third electronic device, stacked above said second electronic device.

8. The computer system of claim 7, wherein said first electronic component assembly is a plurality of disk drives mounted in parallel in said cooling path and said second electronic component assembly is a plurality of disk drives mounted in parallel in said cooling path.

9. The computer system of claim 7, wherein said air inlet is at the front of said cabinet and said air outlet is at the rear of said cabinet.

10. The computer system of claim 9, wherein said cabinet further comprises a front access panel.

11. The computer system of claim 9, wherein said cabinet further comprises a rear access panel.

12. The computer system of claim 7, wherein said means for air pressure balancing further comprises:

a pressure balance plate disposed above and between said first electronic component assembly and said second electronic component assembly; and

a plurality of air vanes for maintaining separation of said cooling path into a plurality of subpaths.

13. An apparatus for housing a plurality of electronic components, comprising:

a cabinet;

a front panel having an air inlet, wherein said front panel is attached to said cabinet;

a rear panel having an air outlet, wherein said rear panel is attached to said cabinet, and wherein said cabinet, said air inlet, and said air outlet form an air flow path;

a front support structure for a plurality of front electronic components, said front support structure having an end closest to said air inlet and an end furthest from said air inlet, said front support structure being mounted in said air flow path of said cabinet so that said furthest end of said front support structure is tilted downward, with respect to said closest end of said front support structure, at an angle of greater than 0 and less than 90 degrees from the horizontal axis of said cabinet;

a rear support structure for a plurality of rear electronic components, said rear support structure having an end closest to said air inlet and an end furthest from said air inlet, said rear support structure being mounted serially, with respect to said front support structure, in said air flow path of said cabinet so that said closest end of said rear support structure is tilted downward, with respect to said furthest end of said rear support structure, at an angle of between 0 and 90 degrees from the horizontal axis of said cabinet; and

air pressure balancing means for balancing air pressure between said plurality of front and rear electronic components, wherein said air pressure balancing means is disposed in said air flow path above said front support structure and said rear support structure.

14. The apparatus of claim 13, further comprising:

means for moving air through said air inlet, serially past said front and rear support structures, and exhausting said air out of said air outlet.

15. The apparatus of claim 13, further comprising:

a front backplane attached to said front support structure; and

a rear backplane attached to said rear support structure.

16. The apparatus of claim 13, wherein said air pressure balancing means further comprises:

a pressure balance plate disposed above and between said front support structure and said rear support structure; and

a plurality of air vanes attached to said pressure balance plate.