Oven without dust rise

Abstract

An oven has an enclosed heat exchange zone for use with biomass fuel. The oven has a body which is able to be placed on the ground. The body has a combustion cabinet and an auxiliary equipment cabinet. The combustion cabinet has a burner received therein. The burner has a fire grate, a side plate, a blowing space, and a hearth. A heat exchange zone is defined by the surrounding tubular inner wall; a side heating zone being defined by a tubular inner and a tubular outer walls. A chimney is formed on the tubular outer wall in communication with an upper portion of the side heating zone. An opening is defined in the top of the combustion cabinet right above the tibular inner wall.

1 . An oven without dust rise using biomass fuel comprising:
 a body which is able to be placed on the ground, said body having a combustion cabinet and an auxiliary equipment cabinet, said combustion cabinet having a bottom which is able to be levelly placed on the ground, a side extending upward from a peripheral of said bottom, and a top in connection with an upper peripheral of said side and opposite to said bottom, an oven-top being defined in said top, said combustion cabinet having a burner received therein, said burner having a fire grate, an air supply zone being defined beneath said fire grate and burning zone being defined above said fire grate, a plurality of vent-holes being defined in said fire grate, said auxiliary equipment cabinet having a fuel supply mechanism and an electrical equipment received therein, said fuel supply mechanism having a hopper, a fuel tube having one end in communication with said hopper and a free end extending into said burning zone, and a rotary vane feeder rotatably received in said fuel tube, said electrical equipment having a suction fan, a feeding motor for driving said rotary vane feeder, an air blower for supplying air to said air supply zone, a power supply, a switch, and a power light, a dust removing device between said burner and said oven-top, said dust removing device having a cylindrical inner wall and a cylindrical outer wall between which an ventilation zone is defined, a circular slit being defined between said cylindrical inner wall and said cylindrical outer wall near said oven-top, a ventilating duct connecting said ventilation zone with a suction fan.   
     
     
         2 . The oven without dust rise as claimed in  claim 1 , wherein a dust removing tank is provided in said combustion cabinet beside said burner, said dust removing tank being in communication with said ventilating duct and having filter water therein, a middle wall sticking out water level, a first side wall under said water level on one side of said middle wall, and a second side wall under said water level on the other side of said middle wall, a side of said dust removing tank of said first wall side being in communication with said ventilating duct of said oven-top side, and the other side of said dust removing tank of said second wall side being in communication with said ventilating duct of said suction fan side.