Multi-apertured conduction heater
AssigneeLockheed Martin Corporation
InventorsFrans Hendrik Ebersohn, Randall James Sovereign, Regina Mariko Sullivan
Life of this patent
Estimating the term…
Abstract
In one embodiment, a system includes a thermionic emitter and a heater at least partially surrounding the thermionic emitter. The heater is configured to heat the thermionic emitter. The heater includes a first end, a second end opposite the first end, and a plurality of hollow insulating tubes that each run from the first end to the second end. The heater also includes a heater wire that runs through each of the hollow insulating tubes. The heater wire is configured to be resistively heated by an electrical current passed through the heater wire.
Claims20
A system, comprising:
- a cathode comprising a cathode tube;
- a thermionic emitter installed at least partially within the cathode tube;
- and
- a graphite heater surrounding the cathode tube and configured to heat the thermionic emitter, the graphite heater being in a shape of a hollow circular cylinder, the graphite heater comprising:
- a first end;
- a second end opposite the first end;
- a plurality of hollow ceramic insulating tubes that each run from the first end to the second end;
- and
- a heater wire that runs through each of the hollow ceramic insulating tubes, the heater wire configured to be resistively heated by an electrical current passed through the heater wire.
A system, comprising:
- a cathode comprising a cathode tube;
- a thermionic emitter installed at least partially within the cathode tube;
- and
- a heater surrounding the cathode tube and configured to heat the thermionic emitter, the heater comprising:
- a first end;
- a second end opposite the first end;
- a plurality of hollow insulating tubes that each run from the first end to the second end;
- and
- a heater wire that runs through each of the hollow insulating tubes, the heater wire configured to be resistively heated by an electrical current passed through the heater wire.
A system, comprising:
- a thermionic emitter;
- and
- a heater at least partially surrounding the thermionic emitter, the heater configured to heat the thermionic emitter, the heater comprising:
- a first end;
- a second end opposite the first end;
- a plurality of hollow insulating tubes that each run from the first end to the second end;
- and
- a heater wire that runs through each of the hollow insulating tubes, the heater wire configured to be resistively heated by an electrical current passed through the heater wire.
Dependencies are inferred from the claim text.