Induction devices and methods of using them

Patent metadata

Field	Value
Publication number	US-9848486-B2
Application number	US-201715444809-A
Country	US
Kind code	B2
Filing date	Feb 28, 2017
Priority date	Jan 28, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

Certain embodiments described herein are directed to induction devices that can be used to sustain a plasma. In certain configurations, the induction device may comprise one or more radial fins electrically coupled to a base. The induction device may take numerous forms including, for example, coils and plate electrodes.

First claim

The invention claimed is:

1. A system for sustaining an ionization source, the system comprising:
a torch comprising a body comprising a longitudinal axis along which a flow of gas is introduced during operation of the torch; and
a device comprising a base constructed and arranged as a coil comprising a first coil turn and a second coil turn to provide an inner aperture formed from the first and second coil turns, in which the inner aperture is configured to receive a portion of the torch body, the device further comprising a first radial fin coupled to the first coil turn and a second radial fin coupled to the second coil turn, in which the device is configured to provide radio frequency energy to the portion of the torch body received by the inner aperture to sustain the ionization source within the portion of the torch body.

2. The system of claim 1 , in which the first radial fin is oriented non-parallel to the longitudinal axis of the torch and extends away from the torch body in the aperture.

3. The system of claim 2 , in which the first radial fin is orthogonal to the longitudinal axis of the torch.

4. The system of claim 2 , further comprising a plurality of radial fins coupled to the base.

5. The system of claim 4 , in which at least two of the radial fins comprise the same angle.

6. The system of claim 4 , in which each of the plurality of radial fins is angled at substantially the same angle to the base when the base is not coiled.

7. The system of claim 4 , in which at least two of the plurality of radial fins are angled at a different angle to the base when the base is not coiled.

8. The system of claim 4 , in which at least two of the plurality of radial fins have a different cross-sectional shape.

9. The system of claim 1 , in which the position of the first radial fin on the base is adjustable without decoupling the first radial fin from the base or removing the portion of the torch body within the aperture.

10. The system of claim 9 , in which the first radial fin couples to the base through a fastener.

11. The system of claim 1 , in which the first radial fin is integrally coupled to the base.

12. The system of claim 1 , in which the first radial fin comprises at least one aperture in the fin.

13. The system of claim 12 , in which the aperture is configured as a through hole that is positioned substantially parallel to the longitudinal axis of the torch.

14. The system of claim 12 , in which the fin aperture is angled toward the aperture formed by the base.

15. The system of claim 1 , in which the device further comprises a plurality of radial fins coupled to the base, wherein at least two of the plurality of radial fins comprise an aperture in the fins, in which the apertures in the two radial fins are constructed and arranged differently.

16. The system of claim 1 , in which the first radial fin is oriented non-parallel to the longitudinal axis of the torch and extends inward within the aperture formed by the base.

17. The system of claim 16 , in which the first radial fin is orthogonal to the longitudinal axis of the torch.

18. The system of claim 16 , further comprising a plurality of radial fins coupled to the base, in which each of the plurality of radial fins is oriented non-parallel to the longitudinal axis of the torch and each of the plurality of fins extends inward within the aperture formed by the base.

19. The system of claim 16 , further comprising a plurality of radial fins coupled to the base, in which each of the plurality of radial fins is oriented non-parallel to the longitudinal axis of the torch and at least one radial fin extends inward within the aperture formed by the base.

20. The system of claim 1 , further comprising a plurality of radial fins coupled to the base, in which at least one radial fin of the plurality of radial fins extends away from the aperture formed by the base and at least one radial fin of the plurality of radial fins extends inward within the aperture formed by the base.

Assignees

• Perkinelmer Health Sci Inc

Inventors

• Cheung Tak Shun
• Wong Chui Ha Cindy

Classifications

• H01J49/105

  using high-frequency excitation, e.g. microwave excitation, Inductively Coupled Plasma [ICP] · CPC title

• H05H1/32 Primary

  using an arc (H05H1/28 takes precedence) · CPC title

• H01J49/26

  Mass spectrometers or separator tubes · CPC title

• H05H1/3405

  Arrangements for stabilising or constricting the arc, e.g. by an additional gas flow · CPC title

• H05H1/30 Primary

  using applied electromagnetic fields, e.g. high frequency or microwave energy (H05H1/28 takes precedence) · CPC title