High-efficiency three-ring fire burner and gas stove

Abstract

The invention provides a high-efficiency three-ring fire burner and a gas stove. On the basis of guaranteeing big fire of three-ring fire, the burner diameter is reduced, the cost is lowered, and the thermal efficiency is improved. According to the high-efficiency three-ring fire burner, a gas cavity is separated into a middle ring fire gas cavity and an outer ring fire gas cavity by virtue of separation ribs arranged on an outer fire cover; a separation ring is arranged in a gas distribution disc, and an outer ring gas channel is divided into a middle ring fire gas channel and an outer ring fire gas channel; and the burner head comprises a central gas mixing chamber, a central ejector pipe, a middle ring gas mixing chamber, an outer gas mixing chamber, an outer ring ejector pipe and an air channel. The outer fire cover is small in diameter, so that the heat exchange time between the pot bottom and flames is long, the heat exchange area is large, the fire and thermal efficiency of the burner are improved, and the cost of the burner is reduced.

Description

technical field [0001] The invention relates to the improvement of the burner structure of a gas stove, in particular to a high-power three-ring fire burner and a gas stove with the burner. Background technique [0002] The heat load of a high-power burner is usually 4.5~5kW. At present, the fire type of a high-power burner on the market is divided into two-ring fire and three-ring fire. The two-ring fire includes the center fire and the outer ring fire, and the three-ring fire includes the center fire. Fire, Middle Ring of Fire and Outer Ring of Fire. If the heat load of a high-power burner with two ring fires is 5kW, the diameter of the fire cover is usually Φ126~Φ135mm, and the load distribution ratio of the inner and outer ring fires is 0.8kW for the center fire and 4.2kW ​​for the outer ring fire. When the user reduces the load of the outer ring fire to 2.5kw through the knob, the flame of the outer ring fire becomes smaller and shorter, the heat intensity of the fire ...

AI Technical Summary

Problems solved by technology

When the user reduces the load of the outer ring fire to 2.5kw through the knob, the flame of the outer ring fire becomes smaller and shorter, the heat intensity of the fire hole decreases, the distance between the high-temperature flame and the bottom of the pot becomes longer, and the utilization rate of heat energy absorbed by the pot will decrease. At the same time, when the user uses a small pot to cook soup, at the same time, adjust the load of the outer ring fire to a moderate level, because the diameter of the fire cover is large and the diameter of the pot is small, and the heat exchange area between the pot and the flame is small, which is not conducive to the effective heat energy. use

[0003] The high-power burners with three-ring fires on the market usually have three nozzles to provide the gas required for combustion, which is superior to the high-power burners with two-ring fires in terms of firepower adjustment. At 2.5kw, the outer ring fire can be turned off by the knob, and the center fire and middle ring fire can be kept. The heat intensity of the fire hole of the center fire and middle ring fire remains unchanged, and the heat utilization rate of the pot will not change, but the ordinary three-ring fire burner Because it is necessary to set the central fire cover, middle ring fire cover and outer ring fire cover, the diameter of the outer fire cover is large, and the volume of the burner is large | (the diameter of the burner head reaches Φ128~135mm), the heat exchange time and heat exchange between the bottom of the pot and the flame The heating area is small, and the thermal efficiency of the gas stove is not high

In order to improve the thermal efficiency of the three-ring fire burner, there is another three-ring fire burner on the market. The inner ring fire adopts full premixed combustion, and the material of the inner ring fire cover full premix burner is ceramic heating plate. The fire and the outer ring fire adopt semi-premixed combustion, and the thermal efficiency value is more than 63%, reaching the first-level energy efficiency of the national energy efficiency definition value. Between the outer ring fire; because the material of the inner ring fire cover is a ceramic heating plate, the ceramic heating plate is easy to crack when used at high temperature for a long time, resulting in tempering and fire leakage of the inner ring fire

The service life of the ceramic heating plate is about 3 to 5 years, while the service life of a gas cooker is 8 years, so the burner using the ceramic heating plate has certain safety hazards

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