Apparatus and method for lubricant condition control and monitoring from a remote location

• US 6,932,856 B2
• Filed: 07/17/2002
• Issued: 08/23/2005
• Est. Priority Date: 12/08/1999
• Status: Expired due to Term

• Current Assignee: Trico MFG. Corp.
• Original Assignee: Trico MFG. Corp.
• Inventors: Rake, Brad
• Primary Examiner(s): SMITH, DUANE
• Application Number:
  US10/197,642
• Publication Number:
  US 20030075043A1
• Time in Patent Office: 1,133 Days
• Field of Search: 95/10, 961/11, 964/17, 964/07, 344/07, 344/49, 344/48, 345/17, 184/6.4, 184/6, 184/7.4, 184/6.21, 184/6.24, 184/108
• US Class Current: 95/10
• CPC Class Codes: F16N 39/005 by evaporating or purifying for heating or cooling of filters B01D35/18, e.g. comprising a vaporising unit B01D35/185

Abstract

An air or oil dryer module is provided to remove or reduce moisture from a lubricant using a pressurized air supply to inject dry air into a lubricant sump. As the “dry air” or air with a minimized moisture content, gathers moisture from the lubricant a relative humidity sensor detects an increase in air moisture. At a pre-determined relative humidity level, a fresh supply of air is added into the lubricant sump, purging the higher relative humidity level air from the sump. A method of reducing moisture content of a lubricant contained in an enclosed space is also disclosed and is performed by agitating the lubricant, providing a humidity sensor in fluid communication with the enclosed space, measuring the humidity of the enclosed space and comparing the humidity measurement with a pre-selected humidity level, introducing dry air into the enclosed space if the humidity level equals or exceeds the pre-selected humidity level, until the saturated humidity level is less than the pre-selected humidity level.

Claims

1. A method of reducing saturated relative humidity of a lubricant in an enclosed space also containing air comprising:

providing a humidity sensor in fluid communication with the enclosed space;

measuring the humidity of the enclosed space;

communicating the measurement of the humidity to a remote location;

comparing the humidity measurement with a pre-selected humidity level;

introducing dry air into the enclosed space if the humidity level equals or exceeds the pre-selected humidity level, until the saturated humidity level is less than the pre-selected humidity level.

2. The method of claim 1, wherein the humidity sensor is provided in fluid communication with the air.

3. The method of claim 1, wherein the humidity sensor is provided in fluid communication with the lubricant.

4. The method of claim 1, wherein the dry air is introduced from an external source.

5. The method of claim 4, further comprising heating the dry air prior to introducing the dry air into the enclosed space.

6. The method of claim 1, wherein the dry air is introduced to the enclosed space by removing air from the enclosed space, drying the air, and returning the dried air to the enclosed space.

7. The method of claim 1, the method further comprising:

measuring temperature simultaneously with the humidity measurement;

calibrating the temperature and humidity measurement to derive a relative humidity measurement of the air.

8. The method of claim 1 wherein the step of introducing dry air into the enclosed space comprises:

withdrawing air from the enclosed space;

compressing the air;

separating the air from water contained in the air;

returning the air to the enclosed space without the water.

9. The method of claim 8 further comprising the step of heating the air prior to returning the air to the enclosed space.

10. The method of claim 8, the method further comprising capturing the water after separating the air from water contained in the air.

11. An apparatus for decreasing the saturated relative humidity of a lubricant contained in an enclosed volume comprising:

a humidity sensor communicatively coupled with the enclosed volume and measuring saturated relative humidity of a lubricant contained in the enclosed volume;

an mechanism for decreasing the humidity of the air in the enclosed volume, thereby decreasing the saturated relative humidity of the lubricant;

a control mechanism at a remote location communicatively coupled with the humidity sensor and the mechanism for decreasing humidity;

wherein the mechanism for decreasing humidity is actuated when signaled by the control mechanism.

12. The apparatus of claim 11, wherein the control mechanism actuates the air/water separating mechanism in response to a humidity sensor reading at or above a pre-determined level.

13. The apparatus of claim 11, the mechanism for decreasing humidity comprising an air/water separating mechanism.

14. The apparatus of claim 13, the air/water separating mechanism further comprising:

an air compressor coupled with the wet air conduit;

a high pressure chamber coupled with the air compressor and the dry air conduit;

a valve coupled with the high pressure chamber.

15. The apparatus of claim 14, wherein the valve is a solenoid valve.

16. The apparatus of claim 14, wherein the valve is communicatively coupled with the control mechanism.

17. The apparatus of claim 11, wherein the control mechanism is a computer.

18. The apparatus of claim 17, wherein the computer is at a remote location.

19. The apparatus of claim 18, wherein the computer is communicatively coupled with the humidity sensor by an internet connection.

20. The apparatus of claim 17, wherein the computer is communicatively coupled with a plurality of humidity sensors.

21. The apparatus of claim 11, the apparatus further comprising a readout communicatively coupled with the humidity sensor to display the measured humidity level.

22. The apparatus of claim 11, the apparatus further comprising a housing to house the control mechanism and the air/water separating mechanism.

23. The apparatus of claim 22, the apparatus further comprising an indicating mechanism carried by the housing and communicatively coupled with the control mechanism.

24. The apparatus of claim 23, wherein the indicating mechanism is an LED display.

25. The apparatus of claim 23, wherein the indicating mechanism is illuminated by the control mechanism in response to the humidity sensor reading at or above the pre-determined level.

26. The apparatus of claim 11, wherein the humidity sensor is in fluid communication with the air.

27. The apparatus of claim 11, wherein the humidity sensor is in fluid communication with the lubricant.

28. The apparatus of claim 11, the apparatus further comprising a temperature sensor communicatively coupled with the enclosed volume and the control mechanism.

29. The apparatus of claim 28, wherein the control mechanism calibrates a reading from the temperature sensor with the humidity reading to derive a temperature calibrated humidity reading.

30. A method of controlling an apparatus for decreasing the saturated relative humidity of a lubricant in an enclosed volume comprising:

providing a humidity sensor communicatively coupled with the enclosed volume;

an internet connection;

providing a communicative coupling between the humidity sensor and the internet connection;

providing a computer communicatively coupled with the humidity sensor via the internet connection;

transmitting a reading from the humidity sensor to the computer over the internet;

using the computer to compare a humidity reading from the humidity sensor to a pre-selected humidity level;

using the computer via the internet connection to control decreasing the humidity level of the enclosed volume, and the saturated relative humidity of the lubricant in the enclosed volume.