Ignition system for portable lpg burner
AssigneeIgnition System For Portable LPG Burner
InventorsDimiter S. Zagoroff, Polly Drinkwater
Life of this patent
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Abstract
A gas-fired heat gun is ignited using an electrode tip located downstream of a flame holder such that the electrode tip is in the path of the flowing gas. The electrode is connected to a voltage source that causes a spark to jump from the electrode tip to another part of the heat gun, such as the flame holder or a casing of the heat gun, when a trigger is pulled, thereby igniting the flowing gas. The electrode is typically a thin wire extending through a portion of a diffuser defining a portion of the gas flow path upstream of the flame holder. The electrode may be continuous from the diffuser to a terminal end downstream of the flame holder.
Claims9
An igniter for a portable gas-fired heat gun, comprising:
- an electrode extending along at least a portion of a heat gun diffuser, an end of the electrode with a tip terminating downstream of the diffuser;
- and
- a burner chamber configured to be attached and removed from the heat gun, the burner chamber including a flame holder and an electrically insulated bore through which the end of the electrode is inserted in the attached state, the tip extending into the burner chamber downstream of the flame holder in the attached state.
A method of assembling a heat gun, comprising:
- providing a heat gun diffuser having an electrode extending along at least a portion of the heat gun diffuser, an end of the electrode carrying a tip terminating downstream of the diffuser;
- and
- mounting a burner chamber to a downstream end of the heat gun diffuser, the burner chamber including a flame holder and an electrically insulated bore, the end of the electrode passing through the electrically insulated bore with the tip extending into the burner chamber downstream of the flame holder when the burner chamber is mounted to the heat gun diffuser.
Dependencies are inferred from the claim text.