A fire cover for a gas stove

Abstract

The invention relates to a fire cover for a gas stove, which comprises a fire cover body, an annular top wall of the fire cover body, and an inner wall extending vertically or obliquely downward from the inner edge and the outer edge of the annular top wall. A gas mixing chamber is formed between the ring wall and the outer ring wall, and at least two inner fire holes communicating with the gas mixing chamber are arranged on the outer ring wall along the circumferential direction, and the feature is that the outer ring wall There is an annular wall covering the inner fire hole on the periphery, there is a gap between the annular wall and the outer ring wall, and a first guide hole communicating with the inner fire hole is opened on the annular wall , compared with the prior art, the present invention has the advantage that the outer ring wall of the fire cover body has a circle of ring-shaped walls that block the inner fire hole, and the overflow can first pass through the ring-shaped wall to play a blocking role, and then pass through the first ring-shaped wall. The diversion hole enters the space between the ring wall and the outer ring wall, and the double protection overflow does not enter the inner fire hole, which has the characteristics of simple structure.

Description

technical field [0001] The invention relates to the field of household gas cookers, in particular to an outer ring fire cover of a household gas cooker. Background technique [0002] At present, most of the traditional burner fire caps sold on the market are milled with one groove, that is, a fire pilot groove is milled on the top of the fire cap body. If disconnected, it is easy to cause deformation of the fire cover body, thereby affecting the ignition effect. For example, the Chinese invention patent "Gas burner with fire transmission device and flameout protection function" whose patent number is 201220464214.0 (notification number is CN202813375U) discloses a similar fire transmission structure. ring fire hole, and the outer ring fire transmission device is also provided on the outer ring fire spray right, the outer ring fire transmission device is a boss installed on the inner wall of the outer ring fire spray ring The outer ring fire transmission hole and the outer ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the traditional burner fire caps sold on the market are milled with one groove, that is, a fire pilot groove is milled on the top of the fire cap body. Disconnected, so it is easy to cause deformation of the fire cover body, thus affecting the ignition effect

For example, the Chinese invention patent "Gas burner with fire transmission device and flameout protection function" whose patent number is 201220464214.0 (notification number is CN202813375U) discloses a similar fire transmission structure. ring fire hole, and the outer ring fire transmission device is also provided on the outer ring fire spray right, the outer ring fire transmission device is a boss installed on the inner wall of the outer ring fire spray ring The outer ring fire transmission hole and the outer ring fire transmission groove on the platform and the outer ring fire spraying ring are composed of the outer ring fire transmission hole and the outer ring fire transmission groove, and the outer ring fire transmission hole and the outer ring fire transmission groove are connected with a The flame-spray holes of the outer ring are connected to realize rapid fire transmission; the fire-transfer channel of this fire-transfer structure is open, and the fire transmission is linear, that is, the fire-transfer channel is exposed on the surface of the outer ring fire cover. This design has a The advantage is that the supply of secondary air in the fire transfer tank is sufficient, and the open fire transfer tank can ensure the supply of secondary air when the flame burns in the fire transfer tank, which is conducive to flame combustion and fire transmission, and has the characteristics of fast fire transmission. However, the open fire transfer tank has two disadvantages. First, the open fire transfer tank is easy to cause blockage of the fire transfer tank. Fire performance, which is also the main reason for the blockage and maintenance of the current fire transmission tank; second, the open fire transmission tank has high requirements on the damper of the stove, because when the damper is opened, too much air at one time will cause the airflow velocity to be too high, resulting in When burning, it is away from the flame or out of fire. Therefore, the structural characteristics of the open fire transfer groove are poor flame stability characteristics. Therefore, to ensure the fire transfer performance of the open fire transfer groove, the damper is basically closed very small, but the damper Turning it down is not conducive to the combustion efficiency of the cooker, and is also not conducive to the emission of smoke, which greatly affects the performance of the cooker. Therefore, it is necessary to further improve the fire transfer groove of the burner fire cover

[0003] In addition, at present, the fire cover of a gas stove is usually composed of a top wall, an annular inner wall and an annular outer wall, and several main fire holes are opened on the annular outer wall of the fire cover along its circumferential direction. There is only a single row of fire holes on the annular outer wall. For such patent documents, please refer to the Chinese utility model patent "A Conical Fire Cover for a Gas Stove Burner" (authorized announcement number CN2842216Y) whose patent number is ZL200520014838.2. You can also refer to the Chinese utility model patent "a kind of burner fire cover" (the authorized announcement number is CN202149492U) whose patent number is ZL201120246965.0. The single row of fire holes disclosed above is also prone to be blocked by overflow

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