Filter seating monitor

• US 20070241510A1
• Filed: 04/12/2006
• Published: 10/18/2007
• Est. Priority Date: 04/12/2006
• Status: Abandoned Application

• Current Assignee: Millipore Corporation (Merck & Co., Inc.)
• Original Assignee: Millipore Corporation (Merck & Co., Inc.)
• Inventors: DiLeo, Anthony
• Application Number:
  US11/402,530
• Publication Number:
  US 20070241510A1
• Time in Patent Office: Days
• US Class Current: 277/321
• CPC Class Codes: B01D 2201/34 Seals or gaskets for filtering elements
• CPC Class Codes: B01D 35/14 Safety devices specially adapted for filtration preventing or minimising fires or explosions A62C; Devices for indicating clogging incorporated in a throw-away filter B01D27/10
• CPC Class Codes: B01D 46/429 Means for wireless communication
• CPC Class Codes: B01D 46/44 controlling filtration
• CPC Class Codes: F16J 15/064 the packing combining the sealing function with other functions
• CPC Class Codes: F16J 15/3296 Arrangements for monitoring the condition or operation of elastic sealings F16J15/326 takes precedence; Arrangements for control of elastic sealings, e.g. of their geometry or stiffness

Abstract

The present invention discloses a method and apparatus for monitoring the integrity of seals, especially those in filtering elements. In one embodiment, an electrically conductive material is used as the sealing material. The resistance of this material is monitored, since it is known that electrical resistance is a function of the compression or strain on the material. In a second embodiment, one or more switches are installed in or on the end cap of the filtering element. These switches engage when the filtering element is properly seated. This information can then be conveyed to the operator, such as via wireless communication.

Claims

1. A method for insuring the proper seating of a sealing element, comprising:

a. providing a conductive sealing element;

b. providing a circuit adapted to measure the conductivity of said sealing element;

c. utilizing said circuit to measure said conductivity; and

d. determining whether said measured conductivity is within a predetermined range, wherein said predetermined range represents conductivity values of a properly seated sealing element.

2. The method of claim 1, wherein said circuit is in communication with said sealing element through a plurality of contacts.

3. The method of claim 2, wherein said sealing element is located within a housing and said circuit is located outside of said housing.

4. The method of claim 2, wherein said sealing element is located within a housing and said circuit is located within said housing.

5. The method of claim 1, wherein said determination is transmitted to an operator.

6. The method of claim 5, wherein said transmission is performed using wireless communication.

7. A sealing element capable of alerting an operator of its seating status, comprising:

a. a conductive material, having a known coefficient of contraction;

b. a circuit in communication with said material, adapted to measure the conductivity of said material; and

c. means for transmitting said status to said operator.

8. The sealing element of claim 7, wherein said means for transmitting comprises wireless communication.

9. The sealing element of claim 8, wherein said means of transmitting comprises an RFID tag.

10. The sealing element of claim 7, wherein said status comprises said measured conductivity.

11. The sealing element of claim 7, wherein said status comprises an indication that said measured conductivity is within a predetermined range.

12. A system for use with a housing, capable of alerting an operator of the seating status of a sealing element within said housing, comprising:

a. said sealing element comprising a conductive material;

b. a circuit;

c. at least two leads embedded in an inner surface of said housing so as to contact said sealing element when seated and also in communication with said circuit; and

d. means for transmitting said status to said operator.

13. The system of claim 12, wherein said circuit produces a current between said leads and measures the voltage drop between said leads.

14. The system of claim 12, wherein said circuit produces a voltage between said leads and measures the current between said leads.

15. The system of claim 12, wherein said status is the measured conductivity of said sealing element.

16. The system of claim 12, wherein said housing comprises a tapered end into which said sealing element is placed, such that the compression of said sealing element increases as said sealing element is placed deeper into said tapered end.

17. A method for insuring the proper seating of a sealing element within a housing, comprising:

a. providing at least one sensor positioned between said sealing element and said housing so as to engage when said sealing element is properly seated;

b. providing a circuit in communication with said at least one sensor to detect the state of said sensor;

c. detecting the state of said at least one sensor; and

d. alerting an operator of the seating status of said sealing element.

18. The method of claim 17, whereby said alerting is performed by communicating said state of said at least one sensor to said operator.

19. The method of claim 18, wherein said communication is wireless.

20. The method of claim 19, wherein said communication is provided by an RFID tag.

21. A system for use with a housing, capable of alerting an operator of the seating status of a sealing element within said housing, comprising:

a. said sealing element;

b. at least one sensor positioned between said housing and said sealing element;

c. a circuit in communication with said at least one sensor, so as to detect the state of said sensor; and

d. means for transmitting said seating status to said operator.

22. The system of claim 21, wherein said seating status is based on the state of said at least one sensor.

23. The system of claim 21, wherein said at least one sensor is located on the inner surface of said housing.

24. A method for insuring the proper seating of a sealing element between a filter element and a housing, comprising:

a. providing at least one sensor positioned between said sealing element and said filter element so as to engage when said sealing element is properly seated;

b. providing a circuit in communication with said at least one sensor to detect the state of said sensor;

c. detecting the state of said at least one sensor; and

d. alerting an operator of the seating status of said sealing element.

25. The method of claim 24, whereby said alerting is performed by communicating said state of said at least one sensor to said operator.

26. The method of claim 25, wherein said communication is wireless.

27. The method of claim 26, wherein said communication is provided by an RFID tag.

28. A system for use with a housing, capable of alerting an operator of the seating status of a sealing element located between a filter element and said housing, comprising:

a. said sealing element;

b. at least one sensor positioned between said filter element and said sealing element;

c. a circuit in communication with said at least one sensor, so as to detect the state of said sensor; and

d. means for transmitting said seating status to said operator.

29. The system of claim 28, wherein said seating status is based on the status of said at least one sensor.

30. The system of claim 28, wherein said at least one sensor is located on the outer surface of said filter element.