Fire cover and combustor

Abstract

The invention relates to the technical field of gas cookers, and discloses a burner cap and a burner. A gas mixing chamber is defined by the fire cover, and a main fire hole, a first flame stabilizing hole and a second flame stabilizing hole are formed in the side wall of the fire cover; wherein the outer end portion of the first flame stabilizing hole is located on the upper side and / or the lower side of the outer end portion of the main fire hole, the inner end portion of the first flame stabilizing hole is communicated with the outer end portion of the second flame stabilizing hole, and the inner end portion of the second flame stabilizing hole is communicated with the gas mixing chamber. And a break angle is formed at the joint of the inner end part of the first flame stabilizing hole and the outer end part of the second flame stabilizing hole. According to the burner cap, when airflow of the gas mixing chamber flows to the second flame stabilizing holes through the first flame stabilizing holes, due to the fact that the break angles are formed at the joints of the first flame stabilizing holes and the second flame stabilizing holes, the airflow flowing speed of the first flame stabilizing holes can be slowed down, and then the flame stabilizing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas stoves, for example, to a fire cover and a burner. Background Art

[0002] At present, the existing burners mainly include components such as an outer fire cover and an inner fire cover. In order to ensure the normal and stable combustion of the flame, the fire holes on the fire cover mainly include main fire holes, flame stabilizing holes or flame stabilizing groove structures, among which the main fire holes have one circle, two circles, etc., and the flame stabilizing structure includes small holes, circumferential grooves, cut grooves and other structures.

[0003] In the burner in the related art, the fire cover is provided with two rows of fire holes, the upper and lower rows of fire holes are main fire holes, and the two rows of fire holes stabilize the flames with each other, or the lower row of fire holes of the fire cover are small fire holes, which can serve as flame stabilizing holes to stabilize the flame.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, some burners have a high pressure, which causes the gas outlet speed of the flame stabilizing hole to be too fast, which in turn causes the flame stabilizing hole to fail to stabilize the flame well and the flame stabilizing efficiency is low.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a fire cover and a burner to reduce the airflow velocity of the flame stabilizing holes and improve the flame stabilizing efficiency.

[0009] An embodiment of the present disclosure provides a fire cover, which defines an air mixing chamber, and the side wall of the fire cover is constructed with a main fire hole, a first flame stabilizing hole and a second flame stabilizing hole; wherein the outer end of the first flame stabilizing hole is located on the upper side and / or the lower side of the outer end of the main fire hole, the inner end of the first flame stabilizing hole is connected to the outer end of the second flame stabilizing hole, and the inner end of the second flame stabilizing hole is connected to the air mixing chamber; wherein the connection between the inner end of the first flame stabilizing hole and the outer end of the second flame stabilizing hole forms an angle.

[0010] Optionally, there are multiple main fire holes, which are spaced apart in sequence along the circumference of the fire cover, and the outer end of the first flame stabilizing hole is located between the outer ends of adjacent main fire holes.

[0011] Optionally, the aperture of the first flame stabilizing hole is greater than 1.5 mm; or, the aperture of the first flame stabilizing hole is greater than or equal to 2.5 mm and less than or equal to 3.5 mm.

[0012] Optionally, the first flame stabilizing hole extends in a horizontal direction, or the first flame stabilizing hole forms an angle with the horizontal direction.

[0013] Optionally, when an angle a is formed between the first flame stabilizing hole and the horizontal direction, the angle a is in a range of 0°<a≤45°; or, the angle is in a range of 5°≤a≤10°.

[0014] Optionally, the aperture of the first flame stabilizing hole is larger than the aperture of the second flame stabilizing hole; and / or, the aperture of the second flame stabilizing hole is greater than or equal to 1 mm and less than or equal to 2 mm.

[0015] Optionally, the distance between the outer edge of the outer end portion of the first flame-stabilizing hole and the outer edge of the outer end portion of the adjacent main fire hole is greater than or equal to 0.5 mm and less than or equal to 3 mm; or, the distance between the outer edge of the outer end portion of the first flame-stabilizing hole and the outer edge of the outer end portion of the adjacent main fire hole is greater than or equal to 0.7 mm and less than or equal to 2 mm.

[0016] Optionally, the second flame stabilization hole is inclined downwardly along the direction from the outside to the inside; and / or, the first flame stabilization hole is inclined upwardly along the direction from the outside to the inside.

[0017] Optionally, the fire cover includes: a top wall; an annular outer wall, connected to the outer edge of the top wall and extending downward, and the annular outer wall is constructed with a main fire hole, a first flame stabilizing hole and a second flame stabilizing hole; a brim, connected to the outer edge of the top wall along the circumference of the top wall and extending in the radial direction of the top wall away from the top wall, the brim protruding from the outer wall surface of the annular outer wall so that the brim covers the top of the main fire hole.

[0018] An embodiment of the present disclosure provides a burner, and the burner includes a fire cover as described in any one of the above embodiments.

[0019] The fire cover and burner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The fire cover is constructed with a main fire hole, which is used to realize the combustion of the fire cover. The first flame stabilizing hole is connected to the second flame stabilizing hole, and there is a corner at the connection between the inner end of the first flame stabilizing hole and the outer end of the second flame stabilizing hole. It can be understood that the first flame stabilizing hole is not directly connected to the gas mixing chamber, and the inner end of the first flame stabilizing hole is not drilled into a blind hole. The first flame stabilizing hole is connected to the gas mixing chamber through the second flame stabilizing hole, thereby realizing the flame stabilizing function. The fire cover of the disclosed embodiment uses the first flame stabilizing hole and the second flame stabilizing hole to realize the flame stabilizing function. When the airflow in the gas mixing chamber flows from the first flame stabilizing hole to the second flame stabilizing hole, the connection between the first flame stabilizing hole and the second flame stabilizing hole forms an angle, which can slow down the airflow speed of the first flame stabilizing hole, thereby improving the flame stabilizing efficiency. Moreover, the setting of the first flame stabilizing hole and the second flame stabilizing hole makes it difficult for external soup or impurities to flow into the second flame stabilizing hole or the gas mixing chamber, thereby reducing the probability and length of the flame stabilizing hole being blocked, improving the cleaning convenience of the fire cover, and ensuring the stable combustion of the fire cover.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of a fire cover provided by an embodiment of the present disclosure from one perspective;

[0024] Figure 2 is a structural schematic diagram of a fire cover provided by an embodiment of the present disclosure from another perspective;

[0025] Figure 3 is a schematic cross-sectional structure diagram of a fire cover provided by an embodiment of the present disclosure;

[0026] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0027] Figure 5 is a schematic cross-sectional structure diagram of another fire cover provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic structural diagram of another fire cover provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of another fire cover provided in an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 100, fire cover; 10, gas mixing chamber; 101, top wall; 102, outer wall of the ring; 103, inner wall of the ring; 104, brim; 20, main fire hole; 201, first flame stabilizing hole; 202, second flame stabilizing hole. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise stated, the term "plurality" means two or more.

[0037] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0039] For the convenience of description, the inner and outer directions described in this application are as shown in the attached Figure 3 shown.

[0040] Combination Figures 1 to 7 As shown, the embodiment of the present disclosure provides a burner, which includes a fire cover 100, a burner head and an ejector, and the burner head is connected between the fire cover 100 and the ejector. The fire cover 100 is arranged above the burner head, and the ejector ejects the air-combustion gas of the fuel gas and the primary air into the burner head, and then flows from the burner head into the fire cover 100. The fire cover 100 is provided with a main fire hole 20, and the main fire hole 20 burns to realize the combustion of the burner.

[0041] Optionally, the burner includes one fire cover 100 or multiple fire covers 100. When there are multiple fire covers 100, the fire covers 100 are annular, and the multiple fire covers 100 are sequentially arranged from the inside to the outside.

[0042] Optionally, the burner further includes a gas distribution plate, which is connected between the burner head and the fire cover 100. When there are multiple fire covers 100, the gas distribution plate defines a gas mixing cavity, and the number of the gas mixing cavities is the same as the number of the fire covers 100 and corresponds one to one. The fire cover 100 is arranged above the gas mixing cavity to realize the combustion of different fire covers 100.

[0043] Alternatively, if Figures 1 to 3 As shown, the fire cover 100 defines an air mixing chamber 10, and the fire cover 100 is constructed with a main fire hole 20, a first flame stabilizing hole 201 and a second flame stabilizing hole 202; wherein, the outer end of the first flame stabilizing hole 201 is located on the upper side and / or the lower side of the outer end of the main fire hole 20, the inner end of the first flame stabilizing hole 201 is connected to the outer end of the second flame stabilizing hole 202, and the inner end of the second flame stabilizing hole 202 is connected to the air mixing chamber 10; wherein, the connection between the inner end of the first flame stabilizing hole 201 and the outer end of the second flame stabilizing hole 202 forms an angle.

[0044] The fire cover 100 of the embodiment of the present disclosure is used, and the fire cover 100 defines an air mixing chamber 10 , and the air-combustion gas in the air mixing chamber 10 flows out from the main fire hole 20 and the first flame stabilizing hole 201 , thereby realizing the combustion of the fire cover 100 . The outer end of the first flame-stabilizing hole 201 is connected to the outside, the inner end of the first flame-stabilizing hole 201 is connected to the outer end of the second flame-stabilizing hole 202, and the inner end of the second flame-stabilizing hole 202 is connected to the mixing chamber 10. The inner end of the first flame-stabilizing hole 201 and the outer end of the second flame-stabilizing hole 202 form an angle at the connection point, that is, the first flame-stabilizing hole 201 is a blind hole, the interior is not penetrated, and is connected to the mixing chamber 10 through the second flame-stabilizing hole 202, so that the air-combustion gas in the mixing chamber 10 first flows into the second flame-stabilizing hole 202 and then flows into the first flame-stabilizing hole 201, and then burns at the first flame-stabilizing hole 201. In this way, the first flame-stabilizing hole 201 is not directly connected to the mixing chamber 10, and the air flow velocity from the second flame-stabilizing hole 202 to the first flame-stabilizing hole 201 is slowed down, which can improve the flame stabilization efficiency of the first flame-stabilizing hole 201. Moreover, external soup or the like will not flow into the second flame stabilizing hole 202 through the first flame stabilizing hole 201, thereby reducing the length of the flame stabilizing hole being blocked, thereby reducing the probability of the flame stabilizing hole being blocked, and improving the combustion stability of the fire cover 100.

[0045] Optionally, the outer end of the first flame stabilizing hole 201 is located at the lower side of the main fire hole 20, which can improve the flame stabilizing effect.

[0046] Alternatively, if Figure 5 As shown, the side wall of the fire cover 100 is configured with a main fire hole 20 , a first flame stabilizing hole 201 and a second flame stabilizing hole 202 , wherein the main fire hole 20 penetrates the side wall of the fire cover 100 from the inside to the outside.

[0047] Optionally, the fire cover 100 includes a top wall 101 and an annular side wall, the annular side wall is annular, connected to the outer edge of the top wall 101, and extends downward. The annular side wall is provided with a main fire hole 20, a first flame stabilizing hole 201, and a second flame stabilizing hole 202. The main fire hole 20 passes through the annular side wall from the inside to the outside.

[0048] Alternatively, if Figure 1 and Figure 3 As shown, there are multiple main fire holes 20 , which are spaced apart in sequence along the circumference of the fire cover 100 , and the outer end of the first flame stabilizing hole 201 is located between the outer ends of adjacent main fire holes 20 .

[0049] With the fire cover 100 of the embodiment of the present disclosure, the arrangement of multiple main fire holes 20 can realize the circumferential combustion of the fire cover 100. Optionally, multiple main fire holes 20 are arranged in sequence and evenly spaced along the circumference of the fire cover 100, which can improve the circumferential combustion uniformity of the fire cover 100. Among them, the outer end of the first flame stabilization hole 201 is located between the outer ends of adjacent main fire holes 20, so that the first flame stabilization hole 201 can not only realize the flame stabilization function of the main fire hole 20, but also can further improve the circumferential combustion uniformity of the fire cover 100.

[0050] Alternatively, if Figure 3 As shown, the inner end of the second flame stabilizing hole 202 is located between the inner ends of adjacent main fire holes 20 , so that the second flame stabilizing hole 202 cooperates with the first flame stabilizing hole 201 to achieve the flame stabilizing effect of the first flame stabilizing hole 201 .

[0051] Optionally, the diameter of the first flame stabilizing hole 201 is greater than 1.5 mm.

[0052] In the disclosed embodiment, the aperture of the first flame stabilizing hole 201 cannot be too small. When the aperture of the first flame stabilizing hole 201 is less than 1.5 mm, the aperture of the first flame stabilizing hole 201 is too small, resulting in smaller flame output from the first flame stabilizing hole 201, affecting the flame stabilizing effect.

[0053] Optionally, the aperture of the first flame stabilizing hole 201 is greater than or equal to 2.5 mm and less than or equal to 3.5 mm.

[0054] In the embodiment of the present disclosure, when the aperture of the first flame stabilization hole 201 is less than 2.5 mm, the aperture of the first flame stabilization hole 201 is small, resulting in low flame stabilization efficiency. When the aperture of the first flame stabilization hole 201 is greater than 3.5 mm, the aperture of the first flame stabilization hole 201 is too large, which reduces the strength of the fire cover 100 and causes too much gas output from the first flame stabilization hole 201, thereby causing uneven combustion at the flame stabilization hole, easily generating smoke, and causing energy waste.

[0055] For example, the aperture of the first flame stabilizing hole 201 can be 1.8 mm, 2 mm, 2.2 mm, 2.5 mm, 3 mm, 3.2 mm, 3.5 mm, etc.

[0056] Optionally, the first flame stabilizing hole 201 extends in a horizontal direction, or the first flame stabilizing hole 201 forms an angle with the horizontal direction.

[0057] With the fire cover 100 of the disclosed embodiment, the first flame stabilizing hole 201 extends horizontally, or the first flame stabilizing hole 201 has a certain angle with the horizontal direction, so that the first flame stabilizing hole 201 is not easy to be blocked, and it is convenient for users to clean even if it is blocked.

[0058] Alternatively, if Figure 4As shown, when the first flame stabilizing hole 201 has an included angle a with the horizontal direction, the range of the included angle is 0°<a≤45°.

[0059] When the fire cover 100 of the embodiment of the present disclosure is used and the angle a is greater than 45°, the inclination angle of the first flame stabilizing hole 201 is too large, which makes it inconvenient to process the first flame stabilizing hole 201 and increases the gas flow resistance of the first flame stabilizing hole 201 .

[0060] Optionally, the angle a is in a range of 5°≤a≤10°.

[0061] In the embodiment of the present disclosure, when the angle a is less than 5°, the inclination angle of the first flame stabilizing hole 201 is too small, and the discharge effect of the soup is poor, thereby affecting the anti-blocking effect of the first flame stabilizing hole 201. When the angle a is greater than 10°, the outlet resistance of the second flame stabilizing hole 202 is too large, thereby affecting the flame stabilizing efficiency.

[0062] For example, the angle a can be 3°, 5°, 8°, 9°, 10°, 20°, 30°, 35°, 40°, 45°, etc.

[0063] Optionally, the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is greater than or equal to 0.5 mm and less than or equal to 3 mm.

[0064] In the fire cover 100 of the embodiment of the present disclosure, the outer end of the first flame stabilizing hole 201 and the outer end of the main fire hole 20 are both circular, and the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 can be understood as the closest distance between the arc of the outer end of the first flame stabilizing hole 201 and the arc of the outer end of the main fire hole 20. When the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is less than 0.5 mm, the strength of the fire cover 100 is low, which is not conducive to the long-term use of the fire cover 100. When the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is greater than 3 mm, the flame stabilizing function of the first flame stabilizing hole 201 on the main fire hole 20 is affected.

[0065] Optionally, the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is greater than or equal to 0.7 mm and less than or equal to 2 mm.

[0066] In the disclosed embodiment, when the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is less than 0.7 mm, the distance between the first flame stabilizing hole 201 and the main fire hole 20 is still relatively close, which will cause the fire cover 100 between the first flame stabilizing hole 201 and the main fire hole 20 to deform, thereby causing an increase in smoke. When the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is greater than 2 mm, the distance between the main fire hole 20 and the first flame stabilizing hole 201 is still relatively far, which will cause the first flame stabilizing hole 201 to be unable to fully stabilize the flame of the main fire hole 20, thereby causing the flame of the fire cover 100 to burn unevenly.

[0067] Optionally, the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is greater than or equal to 1 mm and less than or equal to 2 mm.

[0068] In the disclosed embodiment, the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main fire hole 20 is between 1 mm and 2 mm, which can not only ensure the strength of the fire cover 100, avoid deformation of the fire cover 100, and reduce smoke, but also improve the flame stabilizing effect of the first flame stabilizing hole 201 on the main fire hole 20, thereby improving combustion uniformity.

[0069] For example, the distance between the outer edge of the outer end of the first flame stabilizing hole 201 and the outer edge of the outer end of the adjacent main flame hole 20 is 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.7 mm, 1.8 mm, 2 mm, 2.5 mm or 3 mm, etc.

[0070] Optionally, the aperture of the first flame stabilizing hole 201 is larger than the aperture of the second flame stabilizing hole 202 .

[0071] With the fire cover 100 of the embodiment of the present disclosure, the aperture of the first flame stabilizing hole 201 is larger than the aperture of the second flame stabilizing hole 202, which can reduce the flow velocity of the fuel gas in the first flame stabilizing hole 201 and improve the flame stabilizing efficiency.

[0072] Optionally, the aperture of the second flame stabilizing hole 202 is greater than or equal to 1 mm and less than or equal to 2 mm.

[0073] When the fire cover 100 of the embodiment of the present disclosure is used, when the aperture of the second flame stabilization hole 202 is less than 1 mm, the aperture of the second flame stabilization hole 202 is small, resulting in too large gas flow resistance of the second flame stabilization hole 202, resulting in increased energy consumption of the burner and reduced flame stabilization efficiency. When the aperture of the second flame stabilization hole 202 is greater than 2 mm, the aperture of the second flame stabilization hole 202 is large, resulting in a faster gas flow speed of the first flame stabilization hole 201, resulting in incomplete flame combustion of the first flame stabilization hole 201, resulting in increased smoke and affecting the flame stabilization efficiency.

[0074] For example, the aperture of the second flame stabilizing hole 202 may be 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.8 mm, 2 mm, etc.

[0075] Optionally, along the direction from outside to inside, the second flame-stabilizing hole 202 is inclined downward; and / or, along the direction from outside to inside, the first flame-stabilizing hole 201 is inclined upward.

[0076] With the fire cover 100 of the embodiment of the present disclosure, the first flame stabilization hole 201 is tilted upward from the outside to the inside, so that the soup on the outer wall of the fire cover 100 is not easy to flow into the first flame stabilization hole 201, thereby avoiding the blockage of the first flame stabilization hole 201 and the second flame stabilization hole 202. In the direction from the inside to the outside, the second flame stabilization hole 202 is tilted downward and the first flame stabilization hole 201 is tilted upward, so that when the air-gas flow in the gas mixing chamber 10 flows from the second flame stabilization hole 202 to the first flame stabilization hole 201, the air flow has a downward bending flow, thereby slowing down the flow speed of the air flow and improving the flame stabilization efficiency.

[0077] Optionally, a second angle b between the second flame stabilizing hole 202 and the horizontal direction is in the range of 0°<b≤80°.

[0078] In the embodiment of the present disclosure, when the inclination angle of the second flame stabilizing hole 202 is greater than 80°, it is inconvenient to process the second flame stabilizing hole 202 and to achieve the connection between the second flame stabilizing hole 202 and the first flame stabilizing hole 201 .

[0079] Optionally, the second angle between the second flame stabilizing hole 202 and the horizontal direction is in the range of 30°≤b≤70°.

[0080] In the disclosed embodiment, when b is less than 30°, the inclination angle of the second flame stabilizing hole 202 is too small. When the thickness of the fire cover 100 is limited, the length of the first flame stabilizing hole 201 will be reduced or the length of the second flame stabilizing hole 202 will be increased, resulting in the flow path of the first flame stabilizing hole 201 being too short, which may easily lead to incomplete combustion and poor flame stabilization effect.

[0081] Optionally, a second angle b between the second flame stabilizing hole 202 and the horizontal direction is in the range of 45°≤b≤70°.

[0082] In the embodiment of the present disclosure, b is located between 45° and 70°, which can not only ensure the length of the first flame stabilizing hole 201, but also form a corner at the connection between the first flame stabilizing hole 201 and the second flame stabilizing hole 202, thereby slowing down the air flow velocity flowing into the first flame stabilizing hole 201 and improving the flame stabilization efficiency.

[0083] For example, the second angle b may be 10°, 20°, 30°, 40°, 45°, 50°, 60°, 65°, 70°, 75° or 80°, etc.

[0084] Optionally, the aperture of the main fire hole 20 is greater than or equal to the aperture of the first flame stabilizing hole 201 .

[0085] In the disclosed embodiment, the aperture of the main fire hole 20 can be the same as the aperture of the first flame stabilizing hole 201, or larger than the aperture of the first flame stabilizing hole 201. This can not only ensure the combustion efficiency of the main fire hole 20, but also improve the flame stabilizing effect of the first flame stabilizing hole 201 on the main fire hole 20.

[0086] Alternatively, if Figure 6 As shown, the aperture of the main fire hole 20 may also be smaller than or equal to the aperture of the first flame stabilizing hole 201 .

[0087] Optionally, the range of the angle c at the connection between the inner end of the first flame stabilizing hole 201 and the outer end of the second flame stabilizing hole 202 is 90°≤c≤150°.

[0088] In the embodiment of the present disclosure, there is a bend at the connection between the inner end of the first flame stabilization hole 201 and the outer end of the second flame stabilization hole 202, so that the airflow velocity from the second flame stabilization hole 202 to the first flame stabilization hole 201 is slowed down, thereby improving the flame stabilization efficiency. When the bend is less than 90°, the resistance of the second flame stabilization hole 202 to the first flame stabilization hole 201 is relatively large, and when the bend is greater than 150°, the resistance of the second flame stabilization hole 202 to the first flame stabilization hole 201 is relatively small.

[0089] Optionally, the range of the bending angle c is 100°≤c≤120°.

[0090] In the embodiment of the present disclosure, when the angle is less than 100°, the angle between the second flame stabilization hole 202 and the first flame stabilization hole 201 is too small, which still leads to a large loss of airflow from the second flame stabilization hole 202 to the first flame stabilization hole 201. When the angle is greater than 120°, the length of the first flame stabilization hole 201 is reduced or the length of the second flame stabilization hole 202 is increased, which reduces the flame stabilization effect.

[0091] For example, the angle c can be 95°, 100°, 105°, 110°, 120°, 130°, 150°, etc.

[0092] Alternatively, if Figure 5 As shown, along the direction from inside to outside, the main fire hole 20 is inclined upward.

[0093] With the fire cover 100 of the embodiment of the present disclosure, the main fire hole 20 is tilted upward, so that the flame of the main fire hole 20 extends upward, which is convenient for heating the pot. At the same time, the gas flow resistance of the main fire hole 20 can be reduced, and the combustion efficiency can be improved.

[0094] Alternatively, if Figure 1 and Figure 3As shown, the fire cover 100 includes a top wall 101 and an outer ring wall 102, the outer ring wall 102 is connected to the outer edge of the top wall 101 and extends downward, and the outer ring wall 102 is configured with a main fire hole 20, a first flame stabilizing hole 201 and a second flame stabilizing hole 202. The fire cover 100 also includes a brim 104, which is connected to the outer edge of the top wall 101 along the circumference of the top wall 101 and extends in a radial direction of the top wall 101 in a direction away from the top wall 101, and the brim 104 protrudes from the outer wall surface of the outer ring wall 102, so that the brim 104 covers the main fire hole 20.

[0095] With the fire cover 100 of the disclosed embodiment, the brim 104 protrudes from the outer wall surface of the ring outer wall 102, and covers the top of the main fire hole 20, so that the brim 104 can prevent the soup overflowing from the pot from flowing to the main fire hole 20 and causing the main fire hole 20 to be blocked.

[0096] Optionally, a connecting portion is configured at the lower end of the outer ring side wall 102 , and the connecting portion is used to cooperate with the gas distribution plate or the burner head below the fire cover 100 .

[0097] Alternatively, if Figure 2 and Figure 6 As shown, the fire cover 100 further includes an inner ring wall 103, which is connected to the inner edge of the top wall 101 and extends downward. The inner ring wall 103 facilitates the installation of the inner fire cover 100, or facilitates the connection between the fire cover 100 and the gas distribution plate or the burner, or facilitates the flow of soup on the top wall 101.

[0098] Optionally, the top wall 101 is annular, and is inclined downward from the outside to the inside, wherein the inner side wall 103 of the ring encloses a sewage discharge space.

[0099] In the disclosed embodiment, the top wall 101 is annular and tilts downward from the outside to the inside, so that liquids such as soup flowing to the top wall 101 can be discharged from the drainage space enclosed by the inner side wall 103 of the ring.

[0100] The embodiment of the present disclosure further provides a burner, which includes a fire cover 100 as described in any one of the above embodiments.

[0101] The burner of the embodiment of the present disclosure includes any of the above-mentioned fire covers 100 and therefore has the beneficial effects of any of the above-mentioned embodiments, which will not be described in detail here.

[0102] The embodiment of the present disclosure also provides a gas stove, which includes any one of the burners described above.

[0103] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A fire cover, characterized in that: The fire cover defines a gas mixing chamber, and the side wall of the fire cover is configured with a main fire hole, a first flame stabilizing hole, and a second flame stabilizing hole; The outer end of the first flame stabilizing hole is located on the upper side and / or lower side of the outer end of the main flame hole, the inner end of the first flame stabilizing hole is connected to the outer end of the second flame stabilizing hole, and the inner end of the second flame stabilizing hole is connected to the gas mixing chamber; Wherein, a connection between the inner end of the first flame stabilizing hole and the outer end of the second flame stabilizing hole forms a bent angle.

2. The fire cover according to claim 1, characterized in that: There are multiple main fire holes, which are spaced apart in sequence along the circumference of the fire cover, and the outer end of the first flame stabilizing hole is located between the outer ends of adjacent main fire holes.

3. The fire cover according to claim 1, characterized in that: The aperture of the first flame stabilization hole is greater than 1.5 mm; or, The aperture of the first flame stabilizing hole is greater than or equal to 2.5 mm and less than or equal to 3.5 mm.

4. The fire cover according to claim 1, characterized in that: The first flame stabilizing hole extends along the horizontal direction, or the first flame stabilizing hole forms an angle with the horizontal direction.

5. The fire cover according to claim 4, characterized in that: When an angle a is formed between the first flame stabilizing hole and the horizontal direction, the angle a is in a range of 0°<a≤45°; or, the angle is in a range of 5°≤a≤10°.

6. The fire cover according to claim 1, characterized in that: The aperture of the first flame stabilization hole is larger than the aperture of the second flame stabilization hole; and / or, The diameter of the second flame stabilizing hole is greater than or equal to 1 mm and less than or equal to 2 mm.

7. The fire cover according to claim 1, characterized in that The distance between the outer edge of the outer end of the first flame stabilization hole and the outer edge of the outer end of the adjacent main flame hole is greater than or equal to 0.5 mm and less than or equal to 3 mm; or The distance between the outer edge of the outer end of the first flame stabilizing hole and the outer edge of the outer end of the adjacent main flame hole is greater than or equal to 0.7 mm and less than or equal to 2 mm.

8. The fire cover according to claim 1, characterized in that: In the direction from outside to inside, the second flame stabilization hole is inclined downward; and / or, Along the direction from outside to inside, the first flame stabilization hole is inclined upward.

9. The fire cover according to any one of claims 1 to 8, characterized in that include: top wall; The outer ring wall is connected to the outer edge of the top wall and extends downward, and the outer ring wall is configured with a main flame hole, a first flame stabilizing hole and a second flame stabilizing hole; The brim is connected to the outer edge of the top wall along the circumferential direction of the top wall and extends in the radial direction of the top wall in a direction away from the top wall. The brim protrudes from the outer wall surface of the outer ring side wall so that the brim covers the top of the main fire hole.

10. A burner, characterized in that: Comprising a fire cover as claimed in any one of claims 1 to 9.

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