Nozzle assembly for a gas burner

A nozzle assembly for a gas burner includes a nozzle body having a tip end and an open end in which three netted members and a stop ring are received. An aperture is defined through a periphery of the nozzle body and the aperture communicates with an interior of the nozzle body and the open end. A space is defined between two adjacent netted members so as to provide a space for mixing gas and air.

FIELD OF THE INVENTION
 The present invention relates to a nozzle assembly for a gas burner, and
 more particularly, to a nozzle assembly having three netted members so
 that gas and air can be mixed therebetween.
 A conventional nozzle assembly for a gas burner is shown in FIG. 1 and
 generally includes a nozzle body 1 with an aperture 11 defined through a
 periphery thereof. The nozzle body 1 has a tip end and an open end 12 in
 which a netted member 13 and a stop ring 14 are respectively received. The
 stop ring 14 prevents the netted members 13 from dropping from the open
 end 12 of the nozzle body 1. In FIG. 1, the netted member 13 is a wrapped
 netted member. As shown in FIGS. 2 and 3, the nozzle body 2 has an
 aperture 21 and an open end 22 for receiving a tubular netted member 23
 and a stop ring 24 therein. The stop ring 24 has a protrusion 240
 extending inward from an inner periphery of the stop ring 24 to prevent
 the tubular netted member 23 from passing through the stop ring 24. The
 nozzle member 2 is connected to a gas burner 4 so that gas enters into the
 netted member 23 via a passage 41 in the burner 4. There is no extra space
 for the gas and the air entering from the aperture 21 to be well mixed so
 that the gas cannot burned completely.
 The present invention intends to provide a nozzle assembly for a gas burner
 that has three netted members in the nozzle body so as to provide enough
 space to let gas and air well mix.
 SUMMARY OF THE INVENTION
 In accordance with one aspect of the present invention, there is provided a
 nozzle assembly for a gas burner and comprising a nozzle body having a tip
 end and an open end. An aperture is defined through a periphery of the
 nozzle body and communicates with an interior of the nozzle body and the
 open end. At least two netted members are received in the nozzle body and
 a stop ring is engaged with the open end. A space is defined between the
 at least two netted members.
 The object of the present invention is to provide a nozzle assembly having
 three netted members and a sufficient space is defined between any two
 adjacent netted members so that gas and air can be well mixed in the
 nozzle body.
 These and further objects, features and advantages of the present invention
 will become more obvious from the following description when taken in
 connection with the accompanying drawings which show, for purposes of
 illustration only, several embodiments in accordance with the present
 invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
 Referring to FIGS. 4 and 5, the nozzle assembly in accordance with the
 present invention comprises a nozzle body 3 having a tip end and an open
 end 32. An aperture 31 is defined through a periphery of the nozzle body 3
 and communicates with an interior of the nozzle body 3 and the open end
 32. A flange extends radially outward from the open end 32 so as to be
 engaged with a barrel of a gas burner 4. Three netted members 33 are
 received in the nozzle body 3 via the open end 32 and a stop ring. 34 is
 engaged with the open end 32 to prevent the netted members 33 from
 dropping from the rear end 32. Each of the three netted members 33 is a
 round member and an annular flange extending from a side of each of the at
 least two netted members 33. A space is defined between any two adjacent
 netted members 33.
 As shown in FIG. 7, the netted member 33 has thicker metal wires 35 and
 larger holes 36 so that the gas enters in the nozzle body 3 from a passage
 41 of the gas burner can be completely mixed with air entering the nozzle
 member 3 via the larger holes 36. The space provides a sufficient space to
 let the gas mix with the air so that the combustion is improved.
 FIG. 6 shows that the netted members 33 of the present invention can also
 be engaged with an outlet 51 of a heat blower 5. A gas dispenser 50 in the
 blower 5 ejects gas stream to the heated netted members 33 to form a
 burning gas stream.
 While we have shown and described various embodiments in accordance with
 the present invention, it should be clear to those skilled in the art that
 further embodiments may be made without departing from the scope and
 spirit of the present invention.