The invention relates to the technical field of gas devices, in particular to a
gas burner. The
gas burner comprises a rectangular chamber, a gas mesh
enclosure, a U-shaped cover plate and a
combustion chamber base, wherein the top of the rectangular chamber is open, the bottom of the rectangular chamber is provided with a mounting recess, the
combustion chamber base is inserted in the mounting recess, the gas mesh
enclosure is of a U-shaped trough structure, the front end of which is open, the bottom edge of the gas mesh
enclosure is inserted between a bottom flat surface and the mounting recess, heat-uniforming rib plates are also evenly distributed in parallel on a top flat surface of the
combustion chamber base, and the cover plate is mounted on the top of the rectangular chamber. Theinvention further discloses a gas steam generator, which comprises a stove body and heat exchange
smoke tubes, wherein the heat exchange
smoke tubes are symmetrically arranged on the left and the right in the stove body, the middle of the lower part of the stove body is provided with a long chamber type
combustion chamber along a front-rear direction, and the gas steam generator further comprisesthe
gas burner in
butt joint to the lower part of the
combustion chamber. The gas burner has the beneficial effects as follows: the heat gathering performance of the gas mesh enclosure is sufficientlyutilized, burning is stable,
flame is stable, and the
thermal efficiency is high.