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...

AI Technical Summary

Problems solved by technology

[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 at the opening of the furnace ring accounts for about 25%-30% of the total heat supplied by the gas

[0005] 3. The convective heat transfer rate of direct flame combustion is very small, and the furnace temperature cannot be raised and the thermal efficiency is low.

This commercial burner assembly has the following disadvantages: 1. The combustion method of the burner is direct flame combustion, and the flame convective heat transfer to the frying pan, the temperature of the furnace and the furnace wall cannot be raised, even if the outer wall of the furnace is provided with a water jacket, The inner wall is equipped with a high-temperature heat-gathering anti-corrosion inner sleeve to absorb part of the heat, but the furnace wall lacks radiant heat, and the water in the water jacket not only cannot absorb waste heat, but will reduce the furnace temperature and increase gas consumption

2. Foreign debris is easy to block the atomization hole of the gas preheating split combustion plate or pass through the atomization hole to block the gas hole and cannot burn normally

3. When the burner is working, the gas preheating and dividing combustion disc is in the high temperature area. After being eroded by high temperature and deformed or burnt severely, part of the atomization holes are blocked by deformation, blocking the supply of mixed gas, and the amount of mixed gas at the rupture increases. Losing the mixing ratio of air and gas will cause incomplete combustion or unstable combustion, which will pollute the kitchen environment and affect cooking efficiency. Inconvenience caused by the user for replacement or repair

[0008] To sum up, the existing burners are direct flame combustion, and there are many deficiencies. In practical applications, there are many faults, short service life, and often incomplete combustion, especially when the Chinese style frying furnace is used on a large fire. , not only pollute the environment, cause color harm to the human body, but also waste a large amount of gas resources and bring economic losses to users and society. For this reason, research on the generalization of gas for gas appliances, focus on environmental protection and energy saving, improve combustion methods and combustion structures, and increase thermal efficiency Energy saving is an important topic of concern to the whole society

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