Gas chromatograph having a radiant oven for analytical devices

• US 20060239665A1
• Filed: 04/21/2005
• Published: 10/26/2006
• Est. Priority Date: 04/21/2005
• Status: Active Grant

• Current Assignee: Agilent Technologies, Inc., Broadcom Corporation (Broadcom, Inc.), CJ Corporation (CJ Group), Lite-On Semiconductor Corporation (Diodes Incorporated), Dipharma Francis SrI (Dipharma SPA), Electronics and Telecommunications Research Institute, InnoLux Corporation, Kayaba Industry Company Limited (KYB Corp.), Mikuni Corporation, Nanocrystal (Asia) Inc., Northrop Grumman Systems Corporation (Northrop Grumman Corporation), OKI Electric Industry Company Limited, ROHM Co., Ltd., Tokyo Electron Limited, Washington Research Foundation (University of Washington)
• Original Assignee: CJ Corporation (CJ Group)
• Inventors: Miller, Sammye E. II
• Granted Patent: US 7,130,534 B1
• Time in Patent Office: Days
• US Class Current: 392/416
• CPC Class Codes: G01N 2030/3084 ovens
• CPC Class Codes: G01N 30/30 of temperature
• CPC Class Codes: G01N 30/54 Temperature
• CPC Class Codes: G06T 7/0014 using an image reference approach
• CPC Class Codes: H05B 3/0076 for cooking, e.g. in ovens lamps specially adapted for non-metallic cooking plates H05B3/742, H05B3/744

Abstract

A radiant oven comprises a radiant energy source configured to provide radiant electromagnetic energy, an insert configured to receive the radiant electromagnetic energy and convert the radiant electromagnetic energy into heat, and an additional element configured to receive the heat.

Claims

1. A radiant oven, comprising:

a radiant energy source configured to provide one or more of ultraviolet, visible and infrared radiation;

an insert configured to receive the radiation and convert the into heat; and

an additional element configured to receive the heat.

2. The radiant oven of claim 1, in which the additional element is an analytical column.

3. The radiant oven of claim 1, in which a first surface of the insert is configured to absorb the radiation.

5. The radiant oven of claim 1, in which the radiant energy source is a quartz halogen source.

6. The radiant oven of claim 2, in which the analytical column is in direct contact with the insert.

7. The radiant oven of claim 2, in which the analytical column is separated from the insert by an air gap.

8. The radiant oven of claim 1, fiurther comprising a temperature sensor in contact with the insert.

9. The radiant oven of claim 6, in which the insert couples the heat to the analytical column through conduction.

10. The radiant oven of claim 7, in which the insert couples the heat to the analytical column through convection.

22. The radiant oven of claim 1, in which the insert has a diameter and a height and in which the smaller of the diameter and the height is oriented in the direction of gravity to minimize an effect of natural convection.

4. (canceled)

11. An insert for a radiant analytic oven, comprising:

a body having a first surface and a second surface;

a treatment on the first surface, the treatment configured to receive one or more of ultraviolet, visible and infrared radiation and convert the radiation to heat; and

an analytical column surrounding the insert, the analytical column proximate to the outer surface of the insert so that heat is transferred from the outer surface to the analytical column.

12. The insert of claim 11, in which the radiation is supplied by a quartz halogen source.

14. The insert of claim 11, in which the analytical column is in direct contact with the insert.

15. The insert of claim 11, in which the analytical column is separated from the insert by an air gap.

16. The insert of claim 11, further comprising a temperature sensor in contact with the insert.

17. The insert of claim 14, in which the insert couples the heat to the analytical column through conduction.

18. The insert of claim 15, in which the insert couples the heat to the analytical column through convection.

23. The insert of claim 11, in which the insert has a diameter and a height and in which the smaller of the diameter and the height is oriented in the direction of gravity to minimize an effect of natural convection.

13. (canceled)

19. A method for efficiently heating an analytical column, comprising:

providing a source of radiation from one or more of ultraviolet, visible and infrared radiation;

providing an insert configured to receive the radiation;

converting the radiation into heat; and

securing an analytical columnm around the insert, the analytical column configured to receive the heat.

20. The method of claim 19, further comprising directly coupling the analytical column to the insert.

21. The method of claim 19, further comprising indirectly coupling the analytical column to the insert.

24. The method of claim 19, furtlier comprising orienting the insert such that a smaller of the diameter and the height is oriented in the direction of gravity to minimize an effect of natural convection.