CN218993390U - Fire cover and burner with same - Google Patents

Abstract

The utility model provides a fire cover and a burner with the fire cover. Be provided with a plurality of main fire holes and a plurality of steady flame hole on the lateral wall of this fire lid, the lateral wall has main combustion zone and with pot frame landing leg corresponds assist the combustion zone, a plurality of main fire holes and a plurality of steady flame hole all set up in main combustion zone, assist and be provided with the ignition groove that extends along the circumference direction of fire lid in the combustion zone, the ignition groove link up the lateral wall, the height of ignition groove is less than steady flame hole's diameter. The arrangement makes the firepower of the auxiliary combustion area where the ignition groove is located weaker than that of the main combustion area, reduces the burning of the support leg of the pot rack, and reduces the loss of the support leg of the pot rack in the combustion process. The pilot channels may be a plurality of main fire holes and a plurality of flame holding Kong Yinhuo in the main combustion zone to ensure combustion stability. The processing difficulty and cost of the fire cover are lower, and the fire cover is more suitable for mass production.

Description

Fire cover and burner with same

Technical Field

The utility model relates to the technical field of cooking appliances, in particular to a fire cover and a burner with the fire cover.

Background

The burner is used as a main appliance of a household kitchen and generally comprises a combustion head, a distributor and a fire cover covered on the distributor. The fire distributor, the fire cover and other structures are usually made of cast iron or aluminum alloy and other materials. However, cast iron is prone to rust and aluminum alloys are prone to deformation during use when burned at high temperatures.

In order to solve the above problems, some of the burners on the market are made of stainless steel. Stainless steel has better material stability, is not easy to rust and is not easy to deform under high temperature conditions. However, the hardness of the stainless steel material is high, so that the processing difficulty is high. Therefore, the fire holes are generally uniformly arranged in the circumferential direction of the fire cover, and the fuel gas flows out of the fire holes and burns.

The usual combustor still includes the pot rack landing leg of erectting on the fire lid, and the fire lid of setting up like this can burn the pot rack landing leg in the combustion process, causes the damage of pot rack landing leg, influences the use of combustor.

Disclosure of Invention

In order to at least partially solve the problems of the prior art, according to one aspect of the present utility model, a fire cover is provided. Be provided with a plurality of main fire holes and a plurality of steady flame hole on the lateral wall of this fire lid, the lateral wall has main combustion zone and with pot frame landing leg corresponds assist the combustion zone, a plurality of main fire holes and a plurality of steady flame hole all set up in main combustion zone, assist and be provided with the ignition groove that extends along the circumference direction of fire lid in the combustion zone, the ignition groove link up the lateral wall, the height of ignition groove is less than steady flame hole's diameter.

In the embodiment of the application, be provided with the ignition groove at the lateral wall of fire lid, make the firepower of the auxiliary combustion district that the ignition groove was located weaker for main combustion district, reduce the burning to pot rack landing leg, reduced the loss to pot rack landing leg in the combustion process promptly. The pilot channels may be a plurality of main fire holes and a plurality of flame holding Kong Yinhuo in the main combustion zone to ensure combustion stability. The processing difficulty and cost of the fire cover are lower, and the fire cover is more suitable for mass production.

Illustratively, in the circumferential direction, the pilot flame groove is disposed at intervals from the plurality of main flame holes and the plurality of flame stabilizing holes. In this way, the auxiliary combustion area and the main combustion area which are arranged at intervals can lead the fire power of the fire cover to be more balanced. The ignition groove can burn more stably on a plurality of main fire holes and a plurality of stable flames Kong Yinhuo in the main combustion areas on the left side and the right side of the ignition groove.

Illustratively, on the outer surface of the outer sidewall, the top of the pilot trench is not higher than the top of the plurality of flame holding holes, and the bottom of the pilot trench is not lower than the bottom of the plurality of flame holding holes. In this way, the flame height at the ignition slot is closer to the flame height at the flame stabilizing hole. In the circumferential direction of the fire cover, the flame in the ignition groove and the flame in the flame stabilizing groove can be better connected into a circle, and the flame stabilizing effect is better.

Illustratively, the sidewall has a thickness of between 2-4 mm. The thickness of the side wall that sets up like this is more moderate, avoids influencing the structural strength of fire lid because the thickness is too little to prevent to lead to the degree of difficulty of punching too big because the thickness is too big. The side wall that sets up like this can even out the structural strength and the manufacturing cost and the degree of difficulty of fire lid better. And, because main fire hole and steady flame hole set up on the lateral wall, the lateral wall of thickness can make the hole depth in main fire hole and steady flame hole more moderate like this, avoids tempering and the emergence of the condition of leaving the flame.

Illustratively, the diameters of the plurality of main fire holes are greater than the diameters of the plurality of flame stabilizing holes. Thus, the main fire hole with relatively larger diameter can better ensure the fire intensity of the burner with the fire cover, and the flame stabilizing hole with relatively smaller diameter provides the flame stabilizing effect and ensures the combustion stability.

Illustratively, the plurality of primary fire holes have a diameter of between 2.2-2.6 mm. Thus, the diameters of the main fire holes are more moderate, on one hand, the condition of tempering caused by overlarge diameters of the main fire holes can be avoided, and on the other hand, the condition of flame separation caused by overlarge diameters of the main fire holes can be avoided.

Illustratively, the plurality of flame holding holes have a diameter of between 1.9-2.4 mm. Therefore, the flame stabilizing effect of the flame stabilizing hole is ensured, and the flame cover has lower production difficulty and cost.

Illustratively, the plurality of main fire holes are aligned in a row along a circumferential direction of the fire cover, and the plurality of flame stabilizing holes are aligned in a row along the circumferential direction. Thus, the main fire hole above the flame stabilizing hole ensures the fire intensity of the burner, and the flame stabilizing hole below the main fire hole plays a role in stabilizing flame. Therefore, the stable combustion effect of the fire cover can be realized only through two rows of fire holes around the circumferential direction of the fire cover, and the structure is simple and reasonable.

Illustratively, the length of the plurality of primary fire holes is between 2.3-5.2 mm. Thus, the gas in the gas mixing chamber passes through the main fire hole, flows out from the gas outlet of the main fire hole and burns. The length of the main fire hole is more moderate, and the main fire hole has a certain guiding function on gas so as to control the angle of burning flame and avoid the occurrence of tempering or flame separation and the like.

Illustratively, the plurality of flame stabilizing holes are between 2.1-4.6mm in length. The flame stabilizing holes can better ensure the flame stabilizing effect and avoid the occurrence of tempering, flame separation and other conditions.

Illustratively, the side walls include an inner side wall, a top wall, and an outer side wall, the top wall being connected between the inner side wall and the outer side wall, the outer side wall extending in a vertical direction. Therefore, the space occupied by the fire cover in the horizontal direction can be reduced better, and the structural arrangement is more reasonable.

For example, the plurality of flame stabilizing holes may be located below the plurality of main fire holes. Thus, flames in the flame stabilizing holes can be combusted from the lower direction and gas at the gas outlets of the main fire holes is ignited, so that the combustion effect is more stable, and the occurrence of flame separation and the like is reduced.

Illustratively, the flame stabilizing hole air outlets of the plurality of flame stabilizing holes are located above the main fire hole air inlets of the plurality of main fire holes. Therefore, on the premise of ensuring the combustion stability, the distance between the flame stabilizing holes and the main fire holes can be reduced as much as possible, and the space occupied by the fire cover in the vertical direction is further reduced. The burner with the fire cover is arranged, so that the height of the burner can be effectively reduced, and the structural arrangement is more reasonable.

Illustratively, the fire cover may be a stainless steel fire cover. Compared with the traditional copper and cast iron fire covers, the stainless steel fire cover is better in material stability, is not easy to rust even in environments with high humidity such as a kitchen, is more resistant to high temperature, can ensure stability of the structure under the high temperature condition, is not easy to deform, and is better in durability.

According to another aspect of the present utility model, there is also provided a burner. The burner comprises a distributor and any fire cover, wherein the fire cover is buckled on the top of the distributor. The fire cover is lower in production difficulty and cost, so that the production degree and cost of the burner are reduced, phenomena such as backfire or flame separation of the burner can be effectively avoided, and the stability of the combustion effect of the burner is ensured.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

FIG. 1 is a perspective view of a burner according to an exemplary embodiment of the present utility model;

FIG. 2 is a perspective view of a fire cover and distributor according to an exemplary embodiment of the present utility model;

FIG. 3 is a front view of a fire cover and distributor according to an exemplary embodiment of the present utility model; and

fig. 4-5 are cross-sectional views of a fire cover and a distributor according to an exemplary embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

100. a fire cover; 110. an inner sidewall; 120. a top wall; 130. an outer sidewall; 140. a gas mixing chamber; 150. a main fire hole; 151. a main fire hole air inlet; 152. a main fire hole air outlet; 160. flame stabilizing holes; 162. a flame stabilizing hole air outlet; 170. a combustion chamber; 180. a main combustion zone; 190. an auxiliary combustion zone; 191. a igniting groove; 200. a fire divider; 300. and an ejector tube.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

A fire cover 100 is provided in an embodiment of the present utility model. Referring to fig. 2 and 4 in combination, a plurality of main fire holes 150 and a plurality of flame stabilizing holes 160 are provided on a sidewall of the fire cover 100. The sidewalls of the fire cover 100 may include an inner sidewall 110, a top wall 120, and a sidewall 130, and the top wall 120 may be connected between the inner sidewall 110 and the sidewall 130 and enclose a gas mixing chamber 140. In the illustrated embodiment, a plurality of main fire holes 150 and a plurality of flame holding holes 160 are provided on the outer sidewall 130. In an embodiment not shown, the plurality of main fire holes and the plurality of flame stabilizing holes may also be provided on any one or more of the inner side wall, the top wall, and the outer side wall. Or, in some embodiments, the fire cover may not have a definite top wall, an inner side wall and an outer side wall, the fire cover may be in a bird nest shape, the side wall is in a curved shape, the interior of the bird nest structure forms a gas mixing chamber, and the plurality of main fire holes and the plurality of flame stabilizing holes may be arranged at any position of the bird nest structure to ensure that the gas mixing chamber is communicated with the outside. The fire cover 100 may be provided in an annular structure (refer to fig. 1-3) with an inner ring provided with a combustion chamber 170. Alternatively, the fire cover may be generally square and the combustion chamber may be located in a central region of the square structure. Of course, the fire cover may be provided in any other regular or irregular configuration, not being too limited herein. The side wall may be provided with a plurality of main fire holes 150 and a plurality of flame stabilizing holes 160, and the plurality of flame stabilizing holes 160 may be located below the plurality of main fire holes 150, and the plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 may be all communicated with the gas mixing chamber 140 and the outside. The structures of the plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 may be set according to actual use conditions. For example, when the gas pressure is large, the diameters of the main fire holes or the flame stabilizing holes may be large (for example, the main fire holes are set to 2.6mm in diameter and the flame stabilizing holes are set to 2.4mm in diameter) in order to enhance the combustion effect. Of course, the above-described structures of the plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 may include not only the diameters thereof, but also any structural features that may affect the combustion effect thereof, such as the inclination angle thereof and the shape of the fire holes. Typically, the fire cover 100 is mounted on the distributor 200, and the gas mixing chamber 140 communicates with the distributor 200 for mixing air and gas. The mixed gas flows out through the main fire holes 150 and the flame stabilizing holes 160 and burns. Wherein the plurality of main fire holes 150 may provide a primary combustion effectiveness. The flame stabilizing holes 160 are communicated with the air mixing chamber 140, and play a role in pressure relief on the air mixing chamber 140 to a certain extent, so that the air outlet speed of the main fire holes 150 is reduced, and the conditions such as flame separation and the like are avoided. When the main fire hole 150 is away from the flame, the flame stabilizing hole 160 is positioned below the main fire hole 150, and the flame of the flame stabilizing hole 160 can ignite the main fire hole 150 from the root, so that the flame stabilizing effect is further improved, and the stability of the combustion effect of the burner with the fire cover 100 is ensured.

Referring to fig. 2 and 3, the side walls may have a primary combustion zone 180 and a secondary combustion zone 190 corresponding to the pan carrier leg. The plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 may be all disposed in the main combustion zone 180, and a pilot groove 191 extending in the circumferential direction of the fire cover 100 may be disposed in the auxiliary combustion zone 190. The ignition groove 191 may penetrate the sidewall, and the height (refer to H in fig. 3) of the ignition groove 191 may be smaller than the diameter (refer to D in fig. 3) of the flame stabilizing hole 160. In this way, the flame at the pilot groove 191 is small relative to the flame at the flame stabilizing hole 160. This arrangement can result in a situation where the main combustion zone 180 is formed on the side wall with a greater fire and the auxiliary combustion zone 190 is formed with a weaker fire. When the fire cover 100 is used for a burner with a pot rack supporting leg, the pot rack supporting leg is arranged corresponding to the auxiliary combustion area 190, so that the burning of flame on the pot rack supporting leg can be better reduced, and the loss on the pot rack supporting leg is reduced. Also, the ignition groove 191 may ignite the plurality of main flame holes 150 and the plurality of flame stabilizing holes 160 in the main combustion zone 180 to further ensure the stability of combustion. Specifically, the number of the ignition grooves 191 may be plural, and the ignition grooves correspond to the pot rack legs one by one. It will be appreciated that in practice, the difficulty of punching holes in the sheet material will need to be taken into account. Taking stainless steel plates as an example, under the condition that the thickness of the side wall is between 2 and 4mm, multiple tests and tests prove that the minimum aperture can be 1.9mm, the punching difficulty is too high, and the production cost is too high. Compared with the hole with smaller diameter, the processing difficulty of the ignition groove is lower, and the height of the ignition groove can be controlled within the range smaller than the diameter of the flame stabilizing hole on the premise of not increasing the production cost.

In the embodiment of the application, the ignition groove 191 is arranged on the side wall of the fire cover 100, so that the firepower of the auxiliary combustion area 190 where the ignition groove 191 is positioned is weaker than that of the main combustion area 180, the burning of the pot rack supporting legs is reduced, and the loss of the pot rack supporting legs in the burning process is reduced. The ignition groove 191 may ignite the plurality of main flame holes 150 and the plurality of flame stabilizing holes 160 in the main combustion zone 180 to ensure combustion stability. The fire cover 100 is less difficult and less costly to process and is more suitable for mass production. It should be noted that, the scheme that this application provided can be applicable to the fire lid that stainless steel made, and it can solve the big scheduling problem of current stainless steel fire lid processing degree of difficulty, and this scheme also can be applied to the fire lid of other materials, does not too much limit to this.

For example, referring to fig. 2 and 3, the ignition groove 191 may be disposed at intervals from the plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 in the circumferential direction. In this way, the spaced secondary combustion zone 190 and the primary combustion zone 180 may provide a more balanced fire of the fire cover 100. The ignition groove 191 may ignite the plurality of main fire holes 150 and the plurality of flame stabilizing holes 160 in the main combustion zone 180 at the left and right sides thereof, and combustion is more stable.

Illustratively, on the outer surface of the sidewall, the top of the ignition groove 191 is not higher than the top of the plurality of flame stabilizing holes 160, and the bottom of the ignition groove 191 is not lower than the bottom of the plurality of flame stabilizing holes 160. In this way, the flame height at the ignition groove 191 is closer to the flame height at the flame stabilizing hole 160. In the circumferential direction of the fire cover 100, the flame in the ignition groove 191 and the flame in the flame stabilizing groove 160 can be better connected into a circle, and the flame stabilizing effect is better. In an embodiment not shown, the pilot tank may be provided at other positions of the side wall, the bottom of the pilot tank may be higher than the top of the flame holding tank, and the top of the pilot tank is lower than the top of the main fire hole.

Illustratively, the sidewall thickness may be between 2-4 mm. For example, the thickness of the side wall may be 2mm, 2.5mm, 4mm, or the like. The thickness of the side wall thus provided is more moderate, the structural strength of the fire cover 100 is prevented from being affected due to the too small thickness, and the difficulty of punching is prevented from being too large due to the too large thickness. The side walls thus provided may better balance the structural strength and manufacturing costs and difficulty of fire cover 100. In addition, since the main fire hole 150 and the flame stabilizing hole 160 are provided on the sidewall, the sidewall having such a thickness can make the hole depths of the main fire hole 150 and the flame stabilizing hole 160 more moderate, thereby avoiding the occurrence of flashback and flame exit. Alternatively, in some embodiments, the thickness of the sidewall may be less than 2mm or greater than 4mm.

For example, referring to fig. 3-5 in combination, the plurality of main fire holes 150 may have a diameter greater than that of the plurality of flame stabilizing holes 160. In this way, the main fire hole 150 having a relatively large diameter can better secure the fire intensity of the burner having the fire cover 100, and the flame stabilizing hole 160 having a relatively small diameter provides the flame stabilizing effect, securing the stability of combustion. In an embodiment not shown, the diameters of the plurality of main fire holes and the plurality of flame stabilizing holes may be set according to actual use conditions. For example, the diameter of the main fire hole may be the same as the diameter of the flame stabilizing hole.

Illustratively, the plurality of primary fire holes 150 may have a diameter between 2.2-2.6 mm. In this way, the diameters of the plurality of main fire holes 150 are more moderate, so that on one hand, the occurrence of backfire caused by the too large diameter of the main fire holes 150 can be avoided, and on the other hand, the occurrence of flame separation caused by the too small diameter of the main fire holes 150 can be avoided. Preferably, the plurality of main fire holes 150 may have a diameter of 2.4mm.

Illustratively, the plurality of flame stabilizing holes 160 may have a diameter between 1.9-2.4 mm. It will be appreciated that the too large diameter of the flame stabilizing holes 160 tends to relieve excessive pressure in the plenum 140, resulting in too slow a gas flow rate through the main flame holes 150 and flashback. However, due to the limitation of the material, such as the high structural rigidity, the high punching difficulty, especially the small size of the holes, greatly increases the production difficulty and cost of the fire cover 100. Through the tests of the inventor on the flame stabilizing holes 160 with different apertures, when the diameters of the flame stabilizing holes 160 are between 1.9 and 2.4mm, the flame stabilizing effect of the flame stabilizing holes 160 is ensured, and meanwhile, the flame cover 100 has lower production difficulty and cost. Preferably, the plurality of flame stabilizing holes 160 may have a diameter of 2.2mm.

For example, the plurality of main fire holes 150 may be aligned in a circumferential direction of the fire cover 100, and the plurality of flame stabilizing holes 160 may be aligned in a circumferential direction. Specifically, the distance between the row of the plurality of main fire holes 150 and the row of the plurality of flame stabilizing holes 160 may be set according to practical situations. It will be appreciated that the flame stabilizing hole air outlets 162 of the flame stabilizing holes 160 should be as close as possible to the main flame hole air outlets 152 of the main flame holes 150, so that the flames in the flame stabilizing holes 160 better contact the main flame holes 150, and the flame stabilizing effect is ensured. Thus, the main fire hole 150 above the flame stabilizing hole 160 ensures the fire intensity of the burner, and the flame stabilizing hole 160 below the main fire hole 150 has a flame stabilizing effect. Thus, the stable combustion effect of the fire cover 100 can be realized only through two rows of fire holes around the circumferential direction of the fire cover 100, and the structure is simple and reasonable.

Illustratively, the length of the plurality of primary fire holes 150 is between 2.3-5.2 mm. For example, the length of the main fire hole 150 may be 2.3mm, 4mm, 5.2mm, or the like. Thus, the gas in the gas mixing chamber 140 passes through the main fire hole 150, flows out from the gas outlet of the main fire hole 150, and burns. The main fire hole 150 is more moderate in length, has a certain guiding effect on gas, controls the angle of burning flame, and avoids the occurrence of tempering or flame separation and the like.

Illustratively, the plurality of flame stabilizing holes 160 may be between 2.1-4.6mm in length. For example, the flame stabilizing holes 160 may have a length of 2.1mm, 3.5mm, 4.6mm, or the like. The flame stabilizing holes 160 can better ensure the flame stabilizing effect and avoid the occurrence of backfire, flame release and the like.

Illustratively, referring to fig. 3, the side walls may include an inner side wall 110, a top wall 120, and an outer side wall 130, the top wall 120 may be connected between the inner side wall 110 and the outer side wall 130, and the side walls 130 may be disposed to extend in a vertical direction. The fire cover 100 thus disposed may have a substantially cylindrical shape. This can reduce the space occupied by the fire cover 100 in the horizontal direction better, and the structural arrangement is more reasonable. Alternatively, in an embodiment not shown, the outer side wall may extend from bottom to top and be inclined to the outside.

Illustratively, the plurality of flame stabilizing holes 160 may be located below the plurality of main fire holes 150. In this way, the flames in the plurality of flame stabilizing holes 160 can burn from the lower direction and ignite the gas at the main fire hole gas outlets 152 of the plurality of main fire holes 150, so that the burning effect is more stable, and the occurrence of the conditions of flame separation and the like is reduced. Of course, in some embodiments, a plurality of flame stabilizing holes may be located above a plurality of main fire holes.

For example, referring to fig. 4 and 5 in combination, the flame-holding hole air outlets 162 of the plurality of flame-holding holes 160 may be located above the main fire hole air inlets 151 of the plurality of main fire holes 150. It will be appreciated that the projections of the plurality of flame holding holes 160 and the projections of the plurality of main fire holes 150 have an area overlap in the vertical plane. In this way, the distance between the plurality of flame stabilizing holes 160 and the plurality of main fire holes 150 can be reduced as much as possible under the premise of ensuring the stability of combustion, thereby reducing the space occupied by the fire cover 100 in the vertical direction. The burner with the fire cover 100 is arranged, so that the height of the burner can be effectively reduced, and the structural arrangement is more reasonable. In an embodiment not shown, the flame holder air outlets of the plurality of flame holders may be located below the main flame holder air inlets of the plurality of main flame holders, i.e. in a vertical plane, the projections of the main flame holders and the projections of the flame holders do not overlap.

Illustratively, the fire cover 100 may be a stainless steel fire cover. Compared with the traditional copper and cast iron fire covers, the stainless steel fire cover is better in material stability, is not easy to rust even in environments with high humidity such as a kitchen, is more resistant to high temperature, can ensure stability of the structure under the high temperature condition, is not easy to deform, and is better in durability. In other embodiments, the fire cover may be made of other materials.

According to another aspect of the present utility model, there is also provided a burner. Referring to fig. 1 and 4 in combination, the burner may include an distributor 200 and any of the fire covers described above. The fire cover 100 may be snapped over the top of the distributor 200. Wherein, the distributor 200 may be made of stainless steel. Specifically, the top of the distributor 200 may have an opening that fits with the fire cover 100, and when the fire cover 100 is assembled with the distributor 200, a plenum 140 is formed between the fire cover 100 and the distributor 200. The burner may further include an ejector pipe 300, and an air outlet of the ejector pipe 300 is communicated with the air mixing chamber 140 to provide fuel gas and air in the air mixing chamber 140. After the gas and the air are sufficiently mixed in the gas mixing chamber 140, they flow out through the main fire holes 150 and the flame stabilizing holes 160 on the sidewall of the flame cover 100 and burn. The fire cover 100 is lower in production difficulty and cost, so that the production degree and cost of the burner are reduced, phenomena such as backfire or flame separation of the burner can be effectively avoided, and the stability of the combustion effect of the burner is ensured.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features illustrated in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (13)

1. The utility model provides a fire lid, be provided with a plurality of main fire holes and a plurality of steady flame hole on the lateral wall of fire lid, its characterized in that, the lateral wall has main combustion zone and with the auxiliary combustion zone that pot rack landing leg corresponds, a plurality of main fire holes with a plurality of steady flame hole all set up main combustion zone, be provided with in the auxiliary combustion zone and follow the ignition groove that the circumferencial direction of fire lid extends, the ignition groove link up the lateral wall, the height of ignition groove is less than steady flame hole's diameter.

2. The fire cover of claim 1 wherein the ignition groove is spaced apart from the plurality of main fire holes and the plurality of flame stabilizing holes in the circumferential direction.

3. The fire cover of claim 1 wherein the top of the ignition slot is not higher than the top of the plurality of flame holding holes and the bottom of the ignition slot is not lower than the bottom of the plurality of flame holding holes on the outer surface of the side wall.

4. A fire cover according to claim 1 wherein the side wall has a thickness of between 2-4 mm.

5. The fire cover of claim 1 wherein the plurality of main fire holes have a diameter greater than the plurality of flame stabilizing holes.

6. The fire cover of claim 5 wherein said plurality of primary fire holes have a diameter of between 2.2-2.6 mm.

7. The fire cover of claim 5 wherein the plurality of flame holding holes have a diameter of between 1.9-2.4 mm.

8. The fire cover of claim 1 wherein the plurality of main fire holes are aligned in a row along a circumferential direction of the fire cover and the plurality of flame stabilizing holes are aligned in a row along the circumferential direction.

9. A fire cover as claimed in claim 1 wherein the length of the plurality of primary fire holes is between 2.3-5.2 mm; and/or

The lengths of the flame stabilizing holes are between 2.1 and 4.6 mm.

10. The fire cover of claim 1 wherein said side walls include an inner side wall, a top wall and an outer side wall, said top wall being connected between said inner side wall and said outer side wall, said outer side wall extending in a vertical direction; and/or

The flame stabilizing holes are positioned below the main fire holes.

11. The fire cover of claim 1 wherein the flame holding hole air outlets of the plurality of flame holding holes are located above the main fire hole air inlets of the plurality of main fire holes.

12. The fire cover of claim 1 wherein the fire cover is a stainless steel fire cover.

13. A burner comprising a distributor and a fire cover as claimed in any one of claims 1 to 12, the fire cover being snapped over the top of the distributor.

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