This invention relates to a burner 100 including a burner body 110 having a burner chamber with a backing plate 122 and having a burner element received in the burner chamber, the burner element having a plurality of gas nozzles 117 for supplying gas into the burner mounted therein for rotational movement such that the direction of gas exiting the gas nozzle can be adjusted. The burner is characterized by means for rotating the gas nozzles 117 which are provided on the backing plate 121 and by releasable means for retaining each gas nozzle 117 in a plurality of rotational configurations provided outside the burner chamber. The burner allows for tuning of gas flow from outside the burner while it is in use.
1. A burner ( 100 ), said burner comprising:
a burner body ( 110 ) having a burner chamber with a backing plate ( 122 ) and having a burner element received in the burner chamber, the burner element having a plurality of gas nozzles ( 117 ) for supplying gas into the burner mounted therein for rotational movement such that the direction of gas exiting the each gas nozzle in the plurality of nozzles can be adjusted;
the plurality of gas nozzles are independently rotatable;
each nozzle in the plurality of gas nozzles is adjustable while the burner is in use,
rotational means for rotating the plurality of gas nozzles ( 117 ) are provided on the backing plate ( 122 ); and
releasable means for retaining each gas nozzle ( 117 ) in a plurality of rotational configurations is provided outside the burner chamber.
2. A burner as claimed in claim 1 wherein each gas nozzle is provided with a tell-tale ( 130 ) visible from outside the burner indicating a rotational position of a nozzle in the burner.
3. A burner as claimed in claim 1 further comprising means for supplying solid fuel to the burner.
4. A burner as claimed in claim 1 further comprising non-rotatable means ( 120 ) for supplying gas into the burner.
5. A burner as claimed in claim 1 wherein each gas nozzle ( 117 ) comprises a cylindrical section having an elliptical face ( 119 ) and a gas passage ( 118 ) being formed in the face ( 119 ).
6. A burner as claimed in claim 5 wherein each gas nozzle is provided with a tell-tale ( 130 ) visible from outside the burner indicating the rotational position of the nozzle in the burner.
7. A burner as claimed in claim 1 wherein the releasable means for retaining each nozzle are provided on the backing plate ( 121 ).
8. A burner as claimed in claim 7 wherein each gas nozzle comprises a cylindrical section having an elliptical face and gas passage being formed in the face.
9. A burner as claimed in claim 7 wherein each gas nozzle is provided with a tell-tale ( 130 ) visible from outside the burner indicating the rotational position of the nozzle in the burner.
10. A method of burning a gaseous fuel comprising the steps of:
passing a mixture of inflammable gas and an oxidizing agent through a burner and burning the mixture, wherein said burner comprises a burner body ( 110 ) having a burner chamber with a backing plate ( 122 ) and having a burner element received in the burner chamber, the burner element having a plurality of gas nozzles ( 117 ) for supplying gas into the burner mounted therein for rotational movement such that the direction of gas exiting the gas nozzle can be adjusted; and
the gas nozzles are independently rotatable;
the individual nozzles are adjustable while the burner is in use,
rotational means for rotating the gas nozzles ( 117 ) are provided on the backing plate ( 121 ) and
releasable means for retaining each gas nozzle ( 117 ) in a plurality of rotational configurations is provided outside of the burner chamber.
11. A method as claimed in claim 10 wherein the releasable means for retaining each nozzle is provided on the backing plate.
12. A method as claimed in claim 10 wherein each gas nozzle is provided with a tell-tale visible from outside the burner indicating a rotational position of the nozzle in the burner.