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US 9,484,717 B2Granted
High energy ignition spark igniter
AssigneeChentronics, LLC
InventorsAndrew H. Strong, Ewen M. Kelly
Life of this patent
Estimating the term…
Abstract
The disclosure pertains to ignition systems and more particularly to spark igniters for burners and burner pilots. The spark igniter provided, is configured such that an electric field concentration between two electrodes increases while keeping output voltage unchanged.
Claims19
A spark igniter comprising:
- a plurality of electrodes and an insulator, which are configured to form a body having an outer surface;
- the plurality of electrodes comprises:
- a center electrode having an inner surface and an end, wherein at least a portion of the center electrode forms at least part of the outer surface of the body;
- and
- a shell electrode having an inner surface and an end, wherein at least a portion of the shell electrode forms at least part of the outer surface of the body;
- wherein the insulator is between the center electrode and the shell electrode and at least a portion of the insulator is uncovered by the center electrode and the shell electrode;
- wherein a chamfered portion of the insulator is adjacent to the uncovered portion of the insulator, and the chamfered portion mates with a chamfered portion of the inner surface of the center electrode and with a chamfered portion of the inner surface of the shell electrode such that the center electrode and the shell electrode are positioned and electrically insulated from each other such that a spark gap is formed from a first edge of the center electrode and a second edge of the shell electrode, and wherein a depth of the spark gap is measured from the uncovered portion of the insulator to the outer surface of the body and wherein the depth is less than 8% of the outer surface perimeter of the body.
4 more elements
A spark igniter comprising:
- a plurality of electrodes and an insulator, which are configured to form a body having an outer surface;
- the plurality of electrodes comprises:
- a center electrode having an inner surface and an end, wherein at least a portion of the center electrode forms at least part of the outer surface of the body;
- and
- a shell electrode having an inner surface and an end, wherein at least a portion of the shell electrode forms at least part of the outer surface of the body;
- wherein the insulator is between the center electrode and the shell electrode and at least a portion of the insulator is uncovered by the center electrode and the shell electrode such that the center electrode and the shell electrode are positioned and electrically insulated from each other such that a spark gap is formed on the outer surface of the body from a first edge of the center electrode and a second edge of the shell electrode and the spark gap is located on an axial facing portion of the outer surface;
- and
- wherein the second edge has a non-uniform geometric shape comprising any one from a group consisting of a star, triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, and decagon.
5 more elements
A spark igniter comprising:
- a plurality of electrodes and an insulator, which are configured to form a body having an outer surface;
- the plurality of electrodes comprises:
- a center electrode having an inner surface and an end, wherein at least a portion of the center electrode forms at least part of the outer surface of the body;
- and
- a shell electrode having an inner surface and an end, wherein at least a portion of the shell electrode forms at least part of the outer surface of the body;
- wherein the insulator is positioned between the center electrode and the shell electrode, wherein at least a portion of the insulator is uncovered by the center electrode and the shell electrode such that a spark gap is formed from a first edge of the center electrode and a second edge of the shell electrode;
- wherein the depth of the spark gap is measured from the uncovered portion of the insulator to the outer surface of the body and wherein the depth is less than 8% of the outer surface perimeter of the body.
4 more elements
Dependencies are inferred from the claim text.