Spiral-flow type fishtail high-efficiency energy-saving burner

Abstract

The invention discloses a spiral-flow type fishtail high-efficiency energy-saving burner. The spiral-flow type fishtail high-efficiency energy-saving burner comprises a burner and a hearth. The burner comprises a spiral-flow type air register, a cylindrical channel, a return pipe, combustion gas holes and an air preheater. The hearth comprises a furnace ring and an expansion cover. The expansion cover is a hollow interlayer and comprises an inner expansion cover, a middle expansion cover and a flue gas chamber between the inner expansion cover and the middle expansion cover. An upper opening of the inner expansion cover and a lower opening of the furnace ring form an annular flue gas shunting opening and the annular flue gas shunting opening is communicated with the flue gas chamber, flue gas holes, the air preheater and a gas outlet hole. The outer wall of the middle expansion cover is provided with a hot water sleeve. The hot water sleeve is provided with a water inlet and a water outlet. A temperature-resistant heat-collection corrosion-resistant sleeve is arranged in the inner expansion cover and the lower periphery of the temperature-resistant heat-collection corrosion-resistant sleeve is provided with a flue gas backflow hole communicated with the flue gas chamber. When the spiral-flow type fishtail high-efficiency energy-saving burner burns, the flame in a fishtail shape radially burns closely to the surface of the inner expansion cover, a pan clings to the furnace ring and is closely heated and high-temperature flue gas goes through the flue gas chamber from the annular flue gas shunting opening and then enters into the air preheater to heat air so that the hearth has a high temperature, foods can be heated fast and work efficiency is high. The spiral-flow type fishtail high-efficiency energy-saving burner is environmentally friendly, saves energy, can supply hot water and can effectively improve a kitchen environment.

Description

technical field

[0001] The invention relates to a commercial burner, in particular to a commercial burner used on a Chinese frying stove. Background technique

[0002] At present, in the large, medium and small restaurants in urban and rural areas of our country, and in the canteens of government schools, military police barracks, and group canteens, the ordinary blast diffuser direct flame burners used in Chinese frying stoves have the following deficiencies;

[0003] 1. The blower is forced to ventilate, the gas and the air are not fully mixed, and the unburned part of the burner is incompletely burned and discharged into the atmosphere along with the exhaust smoke, which not only pollutes the air but also takes away a lot of heat;

[0004] 2. Ordinary blower diffuser burners need part of the secondary air to support combustion, so the furnace ring must be open. When burning, the flame will be lost with the opening of the wok. The heat lost by the high-temperature flame a...

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