An automatic ash discharge device for a burner has a furnace base, a duct set, and a discharge set. The furnace base has a combustion chamber, a mounting opening, a discharge mouth, two guiding faces, and multiple inlet holes. The combustion chamber is formed in the furnace base. The guiding faces are formed aslant in the furnace base. The inlet holes are formed through the guiding faces. The duct set is connected to the furnace base and has two bellows and a blower. The bellows are mounted on the furnace base respectively corresponding to the guiding faces and communicate with the combustion chamber. The blower communicates with the bellows. The discharge set is connected to the furnace base and has a receiving tank connected to the furnace base and communicating with the combustion chamber, and a discharge shaft rotatably mounted in the receiving tank.

An automatic ash discharge device for a burner has a furnace base, a duct set, and a discharge set. The furnace base has a combustion chamber, a mounting opening, a discharge mouth, two guiding faces, and multiple inlet holes. The combustion chamber is formed in the furnace base. The guiding faces are formed aslant in the furnace base. The inlet holes are formed through the guiding faces. The duct set is connected to the furnace base and has two casings and a blower. The casings are mounted on the furnace base respectively corresponding to the guiding faces and communicate with the combustion chamber. The blower communicates with the casings. The discharge set is connected to the furnace base and has a receiving tank connected to the furnace base and communicating with the combustion chamber, and a discharge shaft rotatably mounted in the receiving tank.