Powered cartridges and other devices within housings

• US 8,029,679 B2
• Filed: 10/25/2010
• Issued: 10/04/2011
• Est. Priority Date: 10/17/2006
• Status: Active Grant

• Current Assignee: EMD Millipore Corporation (Merck & Co., Inc.)
• Original Assignee: Millipore Corporation (Merck & Co., Inc.)
• Inventors: Grzonka, Michael T., Burke, Aaron
• Primary Examiner(s): DRODGE, JOSEPH W
• Application Number:
  US12/910,917
• Publication Number:
  US 20110043164A1
• Time in Patent Office: 344 Days
• Field of Search: 210 85- 87, 210/90, 210/91, 210/96.1, 210/96.2, 210/103, 210/104, 210/137, 210/143, 210/321.6, 21032178-3218, 210/637, 210/650, 210/651, 210739-745, 210/222, 210/223, 210/243, 210/748.01, 210/323.2, 210/695, 210/767, 210/746, 95/1, 95 14- 16, 95 19- 23, 95 45- 52, 952/73, 96 6- 11, 96417-423, 422/101, 422105-112, 422/534, 422/535, 204/627, 204/640, 204/664, 204/665, 204/666, 204554-557, 375/220, 375/222
• US Class Current: 210/767
• CPC Class Codes: B01D 2201/52 Filter identification means
• CPC Class Codes: B01D 2201/56 Wireless systems for monitoring the filter
• CPC Class Codes: B01D 2201/58 Power supply means for regenerating the filter
• CPC Class Codes: B01D 35/143 Filter condition indicators
• CPC Class Codes: B01D 46/429 Means for wireless communication
• CPC Class Codes: H02J 5/005 with inductive power transfer for charging H02J7/025
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits

Abstract

The present invention describes a system and method for supplying electrical power to a device, such as a filter element, located within a housing. In one embodiment, a conductive coil is embedded into the housing base, and a second coil is embedded into the filter element. Current is then passed through the coil in the housing base. Through induction, a current is created in the second coil in the filter element, in much the same way as a transformer functions. This inductive field may interfere with the operation of the various electronic functions, such as communications, sensing or other activities. To overcome this issue, an energy storage component, such as a capacitor, is included in the filter electronics. In this way, the power generated by the inductive field can be stored, and used when the inductive field is no longer present.

Claims

1. A method of wirelessly supplying power to a filtering element, comprising:

providing a first conductive coil;

providing a second conductive coil in said filtering element, wherein said first coil and second coil form overlapping concentric cylinders, said coils being operative for inducing electrical current to power at least one electronic component in said filtering element; and

activating an alternating current to energize said first coil, said energized first coil inducing a current in said second coil, wherein said current induced in said second coil powers said at least one electronic component.

2. The method of claim 1, wherein said activating step is performed continuously.

3. The method of claim 1, wherein said filtering element comprises an energy storage element.

4. The method of claim 3, wherein said alternating current is activated for a duration necessary to charge said energy storage element.

5. The method of claim 4, further comprising deactivating said alternating current after said duration.

6. The method of claim 5, further comprising performing a function using said at least one electronic component in said filtering element while said alternating current is deactivated.

7. The method of claim 6, further comprising activating said alternating current before said energy storage element is completely discharged.

8. The method of claim 7, further comprising repeating said deactivating and said performing steps.

9. The method of claim 6, wherein said function comprises wireless communication.

10. The method of claim 6, wherein said function comprises a sensing operation.

11. A method of wirelessly supplying power to a filtering element, comprising:

providing a first conductive coil;

providing an energy storage element and a second conductive coil in said filtering element, wherein said first coil and second coil are operative for inducing electrical current to power at least one electronic component in said filtering element;

activating an alternating current to energize said first coil for a duration necessary to charge said energy storage element;

deactivating said alternating current after said duration; and

performing a function using said at least one electronic component in said filtering element while said alternating current is disabled.

12. The method of claim 11, further comprising activating said alternating current before said energy storage element is completely discharged.

13. The method of claim 12, further comprising repeating said deactivating and said performing steps.

14. The method of claim 11, wherein said function comprises wireless communication.

15. The method of claim 11, wherein said function comprises a sensing operation.