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US 2008/0048108 A1Published application
Baffle apparatus and systems and methods using them
OwnerDavid Barkusinventor
Life of this patent
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Abstract
A baffle comprising a plurality of apertures wherein at least one of the plurality of apertures comprises a convergent portion and a divergent portion is provided. In some examples, a baffle comprising at least two concentric cones may be used. In other examples, the baffle may be used in an oil diffusion pump for use in an analytical device, such as a mass spectrometer.
Claims25
An oil diffusion pump comprising:
- a jet assembly comprising a plurality of nozzles;
- a heating element;
- a chamber configured to receive an oil and coupled to the heating element and the jet assembly;
- and
- a non-cooled baffle fluidically coupled to the chamber and comprising a plurality of apertures, wherein at least one of the plurality of apertures comprises a convergent portion and a divergent portion.
2 more elements
An oil diffusion pump comprising:
- a jet assembly comprising a plurality of nozzles;
- a heating element;
- a chamber configured to receive an oil and coupled to the heating element and the jet assembly;
- and
- a non-cooled baffle fluidically coupled to the chamber and comprising at least two concentric cones.
2 more elements
A mass spectrometer comprising:
- a mass analyzer;
- a detector fluidically coupled to the mass analyzer;
- an oil diffusion pump fluidically coupled to the mass analyzer and the detector and comprising
- a jet assembly comprising a plurality of nozzles;
- a heating element;
- a chamber configured to receive an oil and coupled to the heating element and the jet assembly;
- and
- a non-cooled baffle fluidically coupled to the chamber and comprising
- a plurality of apertures, wherein at least one of the plurality of apertures comprises a convergent portion and a divergent portion.
6 more elements
A mass spectrometer comprising:
- a mass analyzer;
- a detector fluidically coupled to the mass analyzer;
- an oil diffusion pump fluidically coupled to the mass analyzer and the detector and comprising
- a jet assembly comprising a plurality of nozzles;
- a heating element;
- a chamber configured to receive an oil and coupled to the heating element and the jet assembly;
- and
- a non-cooled baffle fluidically coupled to the chamber and comprising at least two concentric cones.
5 more elements
A method of configuring a mass spectrometer comprising:
- mounting an oil diffusion pump proximate to a sample introduction device;
- and
- configuring the oil diffusion pump with a non-cooled baffle including at least one aperture comprising a convergent portion and a divergent portion, wherein the baffle is constructed and arranged to retard loss of oil vapor from the oil diffusion pump.
Dependencies are inferred from the claim text.