Method for operating modulated burners actuated by an emulsion

Claim 1

A method for operating modulated burners actuated by an emulsion and using a pre-stream exclusively formed of fuel before the re-ignition of the burner following an interruption of the normal heating, the amount of liquid fuel and water emulsion remaining in the conduits having been fully spent during the previous burner extinction, the interruption of said pre-stream coinciding with the ignition of the burner which consumes, first the liquid fuel alone, then after a given period of time, the liquid fuel and water emulsion provided by a mixer which is fed with liquid fuel, on the one hand, and with water, on the other hand, said method comprising: establishing the return of said pre-stream of fuel generated by a high-pressure pump and which flows through the burner, through the medium of a modulating regulator and of a first electro-valve mounted on the return conduit to the fuel tank; establishing a flow of liquid fuel and water emulsion to the burner, by opening a second electro-valve which communicates the exit of the regulator with another inlet of the mixer, the latter being fed with water by means of a third electro-valve; interrupting said pre-stream of fuel by closing said first electro-valve, after a given period during which said prestream and the flow of emulsion overlapped; and, igniting the burner during the overlapping period, before the liquid fuel and water emulsion has reached said burner.

Claim 2

A method for operating modulated burners actuated by an emulsion and using a pre-stream exclusively formed of fuel before the re-ignition of the burner following an interruption of the normal heating, the amount of liquid fuel and water emulsion remaining in the conduits having been fully spent during the previous burner extinction, the interruption of said pre-stream coinciding with the ignition of the burner which consumes, first the liquid fuel alone, then after a given period of time, the liquid fuel and water emulsion provided by a mixer which is fed with liquid fuel, on the one hand, and with water, on the other hand, said method comprising: establishing the return of said pre-stream of fuel generated by a high-pressure pump and which flows through the burner, through the medium of a modulating regulator and of a first electro-valve mounted on the return conduit to the fuel tank; establishing a flow of liquid fuel and water emulsion to the burner, by opening a second electro-valve which communicates the exit of the regulator with another inlet of the mixer, the latter being fed with water by means of a third electro-valve; interrupting said pre-stream of fuel by closing said first electro-valve, after a given period during which said prestream and the flow of emulsion overlapped; and, igniting the burner during the overlapping period, before the liquid fuel and water emulsion has reached said burner.