Cooling system leak detector

• US 20070169374A1
• Filed: 01/23/2006
• Published: 07/26/2007
• Est. Priority Date: 01/23/2006
• Status: Abandoned Application

• Current Assignee: QNX Cooling Systems Incorporated
• Original Assignee: QNX Cooling Systems Inc
• Inventors: Hamman, Brian
• Application Number:
  US11/336,304
• Publication Number:
  US 20070169374A1
• Time in Patent Office: Days
• US Class Current: 34/DIG.1
• CPC Class Codes: H05K 7/20272 Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
• CPC Class Codes: H05K 7/20772 within server blades for removing heat from heat source

Abstract

A leak or spill detector for a system utilizing coolants is presented. A number of embodiments are presented. Each embodiment includes an absorbent material disposed in the system preferably below potential areas for leaks or spills, although other locations as suited to particular application may be used. If a spill or leak occurs, the coolant is absorbed by the absorbent material leaving an indication that leakage occurred chemically or visually. In another embodiment, if a spill or leak occurs, the coolant is absorbed by the compressed absorbent material expanding its size. This expansion of size remains even if the fluid absorbed evaporates, thereby indicating a spill or leak. Detection circuitry can be added to provide a more immediate notification of a leak or spill and/or the severity of the leak or spill.

Claims

1. A device for detecting and absorbing coolant spilled or leaked in an electronic system comprising:

an absorbent material disposed in the electronic system for absorbing leaks or spills of coolant; and

wherein the material absorbs coolant leaked or spilled and provides an indication of the leak or spill.

2. The device as set forth in claim 1 wherein the absorbent material is compressed and wherein the indication of the leak or spill is an expansion of the absorbent material, and such expansion remains even if the coolant spilled or leaked evaporates.

3. The device as set forth in claim 1 wherein the absorbent material contains a chemical which is displaced by or reacts with the spilled or leaked coolant, the displacement or reaction providing an indication of a spill or leak.

4. The device as set forth in claim 1 wherein the electronic system further includes a cooling system having a coolant for cooling heat-generating components in the electronic system.

5. The device as set forth in claim 1 wherein the absorbent material is generally impermeable to fluid flow on one or more sides.

6. The device as set forth in claim 5 wherein the impermeability of the one or more sides of the absorbent material is comprised of a housing with an open or partially open top and in which the absorbent material is disposed.

7. The device as set forth in claim 1 further comprising:

a plurality of sensors disposed in the absorbent material and responsive to the presence of coolant in the absorbed material;

a sensing device coupled to the sensors; and

wherein the sensing device detects leakage or spillage when coolant is present in the absorbent material.

8. The device as set forth in claim 7 wherein the sensors are electrical conductors and wherein spilled or leaked coolant into the absorbent material causes an electrical current to flow between one or more of the electrical conductors, the sensing device detecting the flow of current through the conductors.

9. The device as set forth in claim 5 further comprising:

a plurality of sensors disposed through the absorbent material and responsive to the presence of coolant in the absorbed material;

a sensing device coupled to the sensors; and

wherein the sensing device detects leakage or spillage when coolant is present in the absorbent material.

10. The device as set forth in claim 9 wherein the sensors are electrical conductors and wherein spilled or leaked coolant into the absorbent material causes an electrical current to flow between one or more of the electrical conductors, the sensing device detecting the flow of current through the conductors.

11. The device as set forth in claim 7 further comprising:

notification means coupled to the sensing device for enabling indicators in the electronic system in response to the sensing device detecting the presence of coolant in the absorbent material.

12. The device as set forth in claim 9 further comprising:

notification means coupled to the sensing device for enabling indicators in the electronic system in response to the sensing device detecting the presence of coolant in the absorbent material.

13. A data processing system having the device of claim 1.

14. A telecommunications system having the device of claim 1.

15. An optical device having the device of claim 1.

16. A device having one or more processors and having the device of claim 1.

17. A method of absorbing and detecting coolant spilled or leaked in an electronic system comprising the steps of:

absorbing the coolant leaked or spilled in absorbent material; and

detecting the coolant spilled or leaked and providing and indication of such leak or spill in the absorbent material.

18. The method of claim 17 wherein the absorbent material is compressed and the indication of coolant leakage or spillage is provided by an expansion of the compressed absorbent material, such expansion remaining even if the spilled or leaked coolant evaporates.

19. The method of claim 17 wherein the absorbent material includes one or more dyes or other chemicals which react with or are displaced by coolant in the absorbent material and provide an indication of such leak or spill, even if the spilled or leaked coolant evaporates.

20. The method of claim 17 further comprising the steps of:

detecting the presence of coolant in the absorbent material by one or more of a plurality of sensors disposed in the absorbent material; and

providing an indication to a system operator or user in response to the detection of coolant in the absorbent material by the sensors.