Burner fire cover for gas stove and burner with same

Abstract

The invention provides a burner fire cover for a gas stove. The burner fire cover comprises an inner ring fire cover, and is characterized in that the inner ring fire cover comprises an inner ring wall and an outer ring wall which are arranged at an internal and external interval, a peripheral cavity is surrounded by the inner ring wall and the outer ring wall together, the peripheral cavity is internally provided with a guiding channel for guiding gas, and the invention further provides a burner with the burner fire cover. Compared with the prior art, the burner fire cover has the advantagesthat a thermocouple is provided with a relatively independent 'fire protection cavity' through the guiding channel, it can be guaranteed that the heating area of the thermocouple in contact with the flame is not too large or too small, meanwhile the gas speed entering the inner ring fire cover can be effectively decreased by a buffer cavity located between the inner ring fire cover and a base, thus the gas can be smoothly discharged at an ignition position to increase the success rate of ignition, in addition, the burner further can guide the gas into the 'fire protection cavity' through the guiding channel, thus more sufficient gas supply is achieved compared with the ignition position, and the success rate of fire protection is increased.

Description

technical field [0001] The invention relates to a household gas range, in particular to a fire cover for a gas range and a burner using the burner cover. Background technique [0002] At present, the fire cover of the gas stove usually includes an inner ring fire cover and an outer ring fire cover, and the heating method for the pot body is basically a combination of an outer ring flame and an inner ring flame, and the distance between the outer ring flame and the inner ring flame is The distance between the center of the bottom of the pot is relatively far, and the outer annular flame is sprayed outwards, so the bottom of the pot cannot be heated intensively, and the smoke formed by combustion stays at the bottom of the pot for insufficient time, resulting in low efficiency and waste of resources. In order to solve the above problems, a patent application No. CN201310295581.1 (authorized announcement No. CN103438453A) Chinese invention patent "an internal injection burner f...

AI Technical Summary

Problems solved by technology

[0002] At present, the fire cover of the gas stove usually includes an inner ring fire cover and an outer ring fire cover, and the heating method for the pot body is basically a combination of an outer ring flame and an inner ring flame, and the distance between the outer ring flame and the inner ring flame is The distance between the center of the bottom of the pot is relatively far, and the outer annular flame is sprayed outwards, so the bottom of the pot cannot be heated intensively, and the smoke formed by combustion stays at the bottom of the pot for insufficient time, resulting in low efficiency and waste of resources. In order to solve the above problems, a patent application No. CN201310295581.1 (authorized announcement No. CN103438453A) Chinese invention patent "an internal injection burner for gas cooker" which provides a burner, which includes a base, injection pipe, connecting ring, Furnace head, flue gas hood, ejector pipe are fixedly connected with the base, and the base is provided with connecting ring, furnace head and flue gas hood from bottom to top. The flame of the hole is sprayed inward, which can make the flame heat the bottom of the pot intensively and improve the thermal efficiency. However, the secondary air required for combustion in the fire hole on the inner wall of the burner of this kind of burner is often insufficient, and the current integrated fixed structure of the gas mixing chamber is not enough. Conducive to the cleaning of the cooker, especially the inside of the gas mixing chamber and the inside of the waist-shaped hole. There are more and more complaints from users that the gas mixing chamber is not easy to clean, and it is also prone to uneven heating of the bottom of the pot

[0003] On the other hand, the combination of the outer ring flame and the inner ring flame is adopted. There is still no flame at the center of the inner ring of fire in this combination, which will also lead to a poor heating effect at the center of the bottom of the pot. Therefore, this paper In order to solve the above problems, the applicant provides a Chinese utility model patent "a fire cover for a household gas stove and a burner using the fire cover" as the patent number is ZL201420412292.5 (the authorized announcement number is CN204063043U), which discloses a An inner ring fire cover which can integrate the inner ring and the middle ring into one body and the combustion flame can be sprayed vertically upward. The fire cover body has an inner ring wall and an outer ring wall. The center of the inner ring wall forms a central through hole. An annular channel is formed between the wall and the outer ring wall, and a through hole is opened at the bottom of the annular channel. Injection, the combustion is concentrated, and the heat loss taken by the secondary air is small, so the combustion temperature is relatively high, and the combustion flame temperature can reach about 1000°, and the thermal efficiency is good; but the burner with this fire cover often has a central pot The bottom is blackened, or even burned through.

[0004] In addition to the above-mentioned high temperature caused by the concentration of flame combustion, which causes the bottom of the central pot to be blackened, there is another phenomenon that the outer circumference of the inner ring fire cover is usually equipped with an ignition needle for ignition and a thermocouple for fire protection. , if the gas ejection speed corresponding to the upper cover of the ignition pin is too fast, the gas ejection velocity corresponding to the ignition hole is too fast, which will cause the flame to leave the flame or cause the ignition success rate to drop. performance, it is necessary to ensure that it has sufficient gas supply, and ignition has higher requirements for gas speed. Although thermocouples have weaker requirements for gas speed, the amount of gas is more important for thermocouples. Further Improvement on the Existing Burner Flame Cover

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