Ultraviolet lamp power supply and method for operating at high power/reduced cooling using cycling

• US 6,690,112 B2
• Filed: 11/21/2001
• Issued: 02/10/2004
• Est. Priority Date: 11/22/2000
• Status: Expired due to Term

• Current Assignee: Heraeus Noblelight America LLC (Heraeus Holding GMBH)
• Original Assignee: Fusion UV Systems, Inc. (Heraeus Holding GMBH)
• Inventors: Wood, Charles H., Penzenstadler, Ernest G.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): Dinh, Trinh Vo
• Application Number:
  US09/989,037
• Publication Number:
  US 20020060529A1
• Time in Patent Office: 811 Days
• Field of Search: H01/J 2.550, H05/B 3.702, 315/291, 315/312, 315/313, 315/39.51, 315/289, 315/290, 315/209.R, 315/307, 315/200.R, 315/362, 323/905, 363/141
• US Class Current: 315/39.51
• CPC Class Codes: H01J 61/52 Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space heating or cooling arrangements to promote ionisation for starting H01J61/54
• CPC Class Codes: H01J 65/044 the field being produced by a separate microwave unit

Abstract

A power supply is provided for a lamp system. The power supply may include structure to switch from a high power level to a low power level. The high power level and the low power level together are a cycle that is repeated. The high power level may be higher than the conventional steady-state power level used for the same lamp system.

Claims

1. An apparatus comprising a lamp system and a power supply for operating the lamp system at a high power level and a low power level, the power supply switching from the lamp system operating at the high power level to the lamp system operating at the low power level, the high power level and the low power level together being a cycle that is repeated during operation of the lamp system, the high power level being higher than an industry standard steady-state power level used for the same lamp system, wherein a bulb of the lamp system remains ON during the cycle.

2. The apparatus according to claim 1, wherein the power supply provides low ripple power.

3. The apparatus according to claim 1, wherein the lamp system comprises an electrodeless ultraviolet lamp system having an electrodeless bulb.

4. The apparatus according to claim 1, wherein the lamp system comprises an arc lamp system for powering an arc lamp outputting ultraviolet high.

5. The apparatus according to claim 1, wherein the lamp system produces ultraviolet light.

16. The apparatus according to claim 1, wherein the lamp system comprises a magnetron.

6. An apparatus comprising a lamp system and a power supply to provide reduced cooling requirements for the lamp system, the power supply switching from the lamp system operating at a first power level to the lamp system operating at a second power level lower than the first power level, the first and second power levels together forming a cycle that is repeated during operation of the lamp system, and the power supply to cool the lamp system, wherein the level of cooling of the lamp system is reduced as compared to cooling requirements of the same lamp system wherein the power supply operates in an industry standard steady-state condition at the first power level, wherein a bulb of the lamp system remains ON during the cycle.

7. The apparatus of claim 6, wherein the power supply provides low ripple power.

8. The apparatus of claim 6, wherein the lamp system comprises an electrodeless ultraviolet lamp system having an electrodeless bulb.

9. The apparatus of claim 6, wherein the lamp system comprises an arc lamp system for powering an arc lamp outputting ultraviolet light.

10. A method of operating a lamp system at a high power level and a low power level, including switching power supplied by a power supply to the lamp system from a high power level to a low power level, the high power level and low power level together forming a cycle that is repeated, the high power level being larger than an industry standard steady-state power level for powering the lamp system, wherein a bulb of the lamp system remains ON during the cycle.

11. The method according to claim 10, wherein the power system provides low ripple power.

12. The method according to claim 10, wherein the lamp system comprises an electrodeless bulb, and wherein the power supply drives a magnetron producing microwaves for powering the electrodeless bulb.

13. The method according to claim 10, wherein the lamp system comprises an arc lamp.

14. A method of operating a lamp system at a high power level and a low power level, the method comprising switching power supplied to the lamp system by a power supply from a high power level to a low power level, the high power level and low power level together forming a cycle that is repeated, and cooling the lamp system, wherein a level of cooling is reduced as compared to the level of cooling the lamp system when using a power supply that is operating under industry standard steady-state conditions at the high power level, wherein a bulb of the lamp system remains ON during the cycle.

15. The method according to claim 14, wherein at least one of the cooling air pressure and cooling air flow volume is reduced to reduce the level of cooling.

17. An apparatus comprising:

a lamp system including a magnetron and a bulb,

a power supply to provide low ripple power to the lamp system and to power the lamp system at a high power level and a low power level, the power supply to adjust power to the lamp system in a cyclical manner from the high level to the low level and back to the high level, the higher power level and the low power level together being a cycle that is repeated during operation of the lamp system, wherein the magnetron and bulb remain ON when powered from the high level to the low level.

18. The apparatus of claim 17, wherein the lamp system comprises an electrodeless ultraviolet lamp system having an electrodeless bulb.

19. The apparatus of claim 17, wherein the lamp system comprises an arc lamp system for powering an arc lamp outputting ultraviolet light.