Oil fired burner

Details Oil fired burner Oil fired burner

1996-07-29

1998-06-23

Price, Carl D.

Combustion

With simulation feature

431170, 431333, 431340, 126512, F24C 508, F23K 522, F23D 504

Patent

active

057696233

DESCRIPTION:

BRIEF SUMMARY
FIELD OF INVENTION

The invention relates to an oil fired burner.


BACKGROUND AND SUMMARY OF THE INVENTION

In recent years, live flame effect fires have gained popularity but require the use of a gas supply. In certain locations, a mains gas supply is not available and there are, moreover, cases where users prefer to heat their homes with an alternative fuel. An object of the present invention is to provide an oil fired burner which will enable a live fuel effect to be obtained.
According to a first aspect of the invention, there is provided an oil fired burner comprising a body defining an oil vaporising chamber, an inlet in the body for oil, an inlet in the body for air and a bed of imitation solid fuel which receives vapour from the chamber for combustion around the imitation solid fuel, heat generated by such combustion being arranged to vaporise oil in the chamber received from the oil inlet.
Vaporising means may be provided for initially vaporising oil entering the chamber through the inlet to provide an initial supply of vapour for combustion around the imitation solid fuel.
According to a second aspect of the invention there is provided an oil fired burner comprising a body defining an oil vaporising chamber, an inlet in the body for oil, an inlet in the body for air and a bed of imitation solid fuel, whereby oil vaporised in the chamber will enter the fuel bed for combustion around the imitation solid fuel, vaporising means being provided for initially vaporising oil entering the chamber through the inlet to provide an initial supply of vapour for combustion around the imitation solid fuel.
The means for initially vaporising oil entering the chamber may comprise a wick in the chamber on which oil is burned.
The combustion of the vapour around the imitation solid fuel will provide the desired live flame effect. The bed of imitation solid fuel may comprise a plurality of ceramic blocks, in the shape of pieces of coal or small logs. Conveniently the bed may comprise a pre-assembled arrangement of ceramic blocks or a pre-moulded ceramic bed.
Conveniently, the imitation fuel bed may be arranged above the chamber, eg carried on baffle means extending across the chamber and which permits the vaporised oil to pass therethrough.
The burner may be arranged within an enclosure such as walling of a stove which may include means such as an adjustable valve or the like to control admission of air to the vaporised oil around the imitation solid fuel. Where such a valve is provided, it may be in the form of a simple air flap which can be moved between open and closed positions.
In a burner according to the second aspect of the invention, vaporisation of fuel subsequently entering the chamber is preferably effected by heat generated as a result of combustion of the vapour around the imitation solid fuel.
To inhibit heat loss from the chamber, the body may be provided with insulation means such as ceramic insulation surrounding the body.
The body may comprise inner and outer walls which define a space therebetween for receiving air from the air inlet. The inner wall is preferably formed with inlet porting for enabling primary air to enter the chamber from the said space.
In a preferred embodiment, a flame ring may be provided in the chamber to control mixing of vapour and air in the chamber and/or the movement of vapour and air through the chamber.
The body is preferably disposed such that the wick, where provided, is arranged at the bottom of the chamber and the imitation solid fuel is arranged at the top of the burner spaced from the wick.
Ignition means may be provided on the body for initially igniting the oil on the wick.
Control means may be provided for controlling flow of oil to the burner, the control means preferably enabling the oil to be fed to the burner to maintain the burner at a low output setting when required.
The air inlet porting may also be arranged to admit secondary air into the chamber. In such a case the porting may admit the secondary air into an annular passage leading to an outlet adja

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patent: 5118539 (1992-06-01), Sebby et al.
WO 8303459, Backstrom, U.S. CL.-431/340, Oct. 1983.
EP 0096111, Fox, U.S.CL.-431/125, Dec. 1983.

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