External ring fire cover, burner and stove

Abstract

The present invention is applicable to the technical field of burner appliances, and provides an outer ring fire cover, a burner and a stove. The outer ring fire cover includes: a fire cover body, which has an air mixing chamber formed inside; a fire outlet hole, which is arranged on the fire cover body, the fire outlet hole is connected with the air mixing chamber, and the fire outlet hole is used to form an outer ring fire; a fire transfer groove, which is arranged on the fire cover body, and the fire transfer groove is used to conduct flame to the fire outlet hole; a flow stabilizing structure, which is arranged in the air mixing chamber, and the flow stabilizing structure has a accommodating chamber for accommodating combustible gas, the fire transfer groove is connected with the accommodating chamber, and the flow stabilizing structure is used to slow down the flow rate of combustible gas entering the accommodating chamber. In the present invention, the outer ring fire cover can reliably transmit flames without flameout or flame separation, thereby improving the reliability of flame transmission.

Description

Technical Field

[0001] The invention belongs to the technical field of burner appliances, and in particular relates to an outer ring fire cover, a burner and a stove. Background Art

[0002] The flames burning on the burners of the stoves used in daily life are composed of a center flame and an outer ring flame. During use, sometimes the center flame is needed, and sometimes the outer ring flame is needed. When the outer ring flame is used, the center flame needs to be transferred to the outer ring flame. In order to transfer the flame, a flame transfer groove is usually provided on the outer ring flame cover, and the flame is transferred to the outer ring through the flame transfer groove.

[0003] In the related art, during the use of an outer ring fire cover provided with a fire transfer groove, the flow rate of the mixed gas of fuel gas and air flowing out of the fire transfer groove is too large, causing the flame to easily separate from the flame or be out of flame during combustion, resulting in the problem of unstable combustion. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides an outer ring fire cover, a burner and a stove to solve the problem that the flame in the fire transfer groove separates or loses the flame and cannot burn stably.

[0005] To solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] An outer ring fire cover, comprising: a fire cover body, with a gas mixing chamber formed inside; a fire outlet hole, arranged on the fire cover body, the fire outlet hole is connected with the gas mixing chamber, and the fire outlet hole is used to form an outer ring fire; a fire transfer groove, arranged on the fire cover body, the fire transfer groove is used to transfer flame to the fire outlet hole; a flow stabilizing structure, arranged in the gas mixing chamber, the flow stabilizing structure has a containing chamber for containing combustible gas, the fire transfer groove is connected with the containing chamber, and the flow stabilizing structure is used to slow down the flow rate of the combustible gas entering the containing chamber;

[0007] The flow stabilizing structure comprises a flow stabilizing chamber and a cover plate, wherein the flow stabilizing chamber is arranged in the gas mixing chamber and connected to the fire cover body, and the flow stabilizing chamber has an opening connected to the gas mixing chamber; the cover plate covers the opening and is connected to the flow stabilizing chamber, and the accommodating chamber is formed between the flow stabilizing chamber and the cover plate;

[0008] Among them, the cover plate includes a cover plate body and a throttling structure, the cover plate is arranged on the opening, and the cover plate body is connected to the flow stabilization chamber through a connecting piece; the throttling structure is opened on the cover plate body, and the throttling structure is used to regulate the intake amount of combustible gas entering the accommodating cavity.

[0009] In some embodiments, the outer ring fire cover also includes: a first fire transfer hole, which is adjacent to the fire outlet hole and is arranged in the fire cover body, one end of the first fire transfer hole extends toward the accommodating cavity and is connected or not connected with the accommodating cavity; a gas supply channel, which is arranged inside the fire cover body and is located below the first fire transfer hole, and the gas supply channel is used to connect the first fire transfer hole with the gas mixing cavity.

[0010] In some embodiments, a plurality of throttling structures are provided, and each throttling structure is spaced apart by a preset distance.

[0011] In some embodiments, the sum of the areas of the throttling structures is smaller than the sum of the areas of the fire transfer groove and the first fire transfer hole.

[0012] In some embodiments, a first connecting hole is provided on the cover plate body, a second connecting hole is provided on the flow stabilization chamber, and one end of the connecting member passes through the first connecting hole and is connected to the second connecting hole.

[0013] In some embodiments, a positioning notch is provided on the cover body, a positioning column is provided on the flow stabilizing chamber, and the positioning column is clamped in the positioning notch; or a positioning column is provided on the cover body, a positioning hole is provided on the flow stabilizing chamber, and the positioning column is inserted in the positioning hole.

[0014] In some embodiments, the fire cover body includes an annular top wall and an inner ring wall and an outer ring wall respectively connected to the inner and outer edges of the top wall, and the gas mixing chamber is formed between the top wall, the inner ring wall and the outer ring wall; wherein the fire outlet hole is opened on the outer ring wall; the fire transfer groove is arranged on the top wall and extends toward the outer ring wall; the first fire transfer hole is arranged in the outer ring wall adjacent to the fire outlet hole.

[0015] In some embodiments, the diameter of the first fire transmission hole is larger than the diameter of the fire outlet hole.

[0016] In some embodiments, the fire cover body is annular, and the fire transfer groove extends along the radial direction of the fire cover body.

[0017] In some embodiments, the outer ring fire cover also includes: a flame stabilizing groove, which is arranged in the circumferential direction of the outer ring wall and extends toward the inside of the outer ring wall; an air supply hole, which is arranged in the outer ring wall, and the air supply hole is used to connect the flame stabilizing groove and the gas mixing chamber; wherein, the flame stabilizing groove is located below the fire outlet hole, and the first fire transfer hole is connected to the flame stabilizing groove.

[0018] In some embodiments, the first fire transmission hole is arranged to extend horizontally.

[0019] In some embodiments, the first fire transfer hole extends obliquely, and an end of the first fire transfer hole close to the stabilizing chamber is lower than an end of the first fire transfer hole close to the fire outlet hole.

[0020] In some embodiments, the circumferential extension direction of the flame stabilizing groove passes through the first flame transfer hole, and the depth direction of the flame stabilizing groove extends horizontally toward the inside of the outer annular wall.

[0021] In some embodiments, the outer ring fire cover also includes: a second fire transfer hole, arranged on the inner ring wall and / or the top wall, the second fire transfer hole is connected to the gas mixing chamber, and the second fire transfer hole is used to guide the flame into the fire transfer groove.

[0022] In some embodiments, the outer ring fire cover further includes: a fire guide gap, which is provided between the top wall and the outer ring wall, and the fire guide gap is used to reduce the distance for the flame to be conducted to the fire outlet.

[0023] A burner is also provided in an embodiment of the present invention, comprising: an inner ring fire burner head for forming an inner ring flame; an inner ring fire cover, which is arranged on the inner ring fire burner head; an outer ring fire burner head for forming an outer ring flame; the above-mentioned outer ring fire cover, wherein the outer ring fire cover is arranged on the outer ring fire burner head; wherein the outer ring fire cover surrounds the outer side of the inner ring fire cover and is arranged cocentrically with the inner ring fire cover.

[0024] A stove is also provided in an embodiment of the present invention, comprising the burner mentioned above.

[0025] A burner is also provided in an embodiment of the present invention, comprising: an inner ring fire burner head for forming an inner ring flame; an inner ring fire cover, which is arranged on the inner ring fire burner head; an outer ring fire burner head for forming an outer ring flame; the above-mentioned outer ring fire cover, wherein the outer ring fire cover is arranged on the outer ring fire burner head; wherein the outer ring fire cover surrounds the outer side of the inner ring fire cover and is arranged cocentrically with the inner ring fire cover.

[0026] A stove is also provided in an embodiment of the present invention, comprising the burner mentioned above.

[0027] An outer ring fire cover provided by an embodiment of the present invention includes a fire cover body, wherein the fire cover body is formed with an air mixing chamber, and a fire outlet hole, a fire transfer groove and a flow stabilizing structure are arranged on the fire cover body. The flow stabilizing structure is arranged in the air mixing chamber, and the flow stabilizing structure is used to slow down the flow rate of the combustible gas in the air mixing chamber entering the accommodating chamber of the flow stabilizing chamber. In this way, by providing the flow stabilizing structure, the flow rate and speed of the combustible gas entering the accommodating chamber from the air mixing chamber are slowed down after being regulated by the flow stabilizing structure, and then the combustible gas in the accommodating chamber of the flow stabilizing chamber can be evenly distributed to the fire transfer groove, reducing the flow rate of the combustible gas in the fire transfer groove, so that the flame will not be de-ignited or separated from the flame when burning in the fire transfer groove, and a stable combustion state is achieved, so that the fire transfer groove can reliably transfer the flame, thereby improving the safety and reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is a schematic structural diagram of an outer ring fire cover provided by an embodiment of the present invention in a first orientation;

[0030] Figure 2 is a schematic structural diagram of an outer ring fire cover provided by an embodiment of the present invention in a second orientation;

[0031] Figure 3 is a cross-sectional schematic diagram of an outer ring fire cover provided by an embodiment of the present invention;

[0032] Figure 4 is another structural cross-sectional schematic diagram of an outer ring fire cover provided by an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of a structure in which a cover plate and a flow stabilization chamber are separated according to an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of an outer ring fire cover provided by an embodiment of the present invention in a third position;

[0035] Figure 7 It is a schematic diagram of the structure of a burner provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Outer ring fire cover; 10. Connecting piece; 11. Fire cover body; 111. Top wall; 112. Inner ring wall; 113. Outer ring wall; 114. Mixing chamber; 115. First fire hole; 116. Gas transmission channel; 12. Fire outlet hole; 13. Fire transfer groove; 14. Flow stabilization structure; 141. Accommodating chamber; 142. Flow stabilization chamber; 1421. Second connecting hole; 1422. Positioning column; 143. Cover plate; 1431. Cover plate body; 1432. Throttling structure; 1433. First connecting hole; 1434. Positioning notch; 16. Flame stabilization groove; 17. Gas supply hole; 18. Second fire hole; 19. Fire guide notch; 2. Burner; 21. Inner ring fire burner head; 22. Inner ring fire cover; 23. Outer ring fire burner head. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0040] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above" and "below" are the directions in normal use.

[0041] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. The term "connection" includes both direct connection and indirect connection unless otherwise specified. The term "close to" means a range within which the distance from a point to the position is smaller than the distance from the point to the opposite end of the position. The term "end" in the term "first end / second end / ...end" means the end face or end point of an object.

[0042] like Figure 1As shown, an outer ring fire cover 1 provided by an embodiment of the present invention is mainly used on a gas stove. The gas stove usually has two combustion modes, inner ring fire and outer ring fire. The outer ring fire cover 1 is used to be assembled on other components correspondingly connected thereto for use, so that the combustible gas can burn stably to form an outer ring fire. In actual use, the inner ring fire is first formed on the gas stove, and when the outer ring fire needs to be formed, the outer ring fire can be ignited with the help of the inner ring fire under the function of distributing and guiding the combustible gas of the outer ring fire cover 1, so that the inner ring fire and the outer ring fire are formed at the same time, so that the gas stove has a higher combustion firepower.

[0043] like Figures 1 to 3As shown, in some embodiments, the outer ring fire cover 1 is a hollow annular structure at the center, and the hollow area is used for installing parts that can form an inner ring fire. The outer ring fire cover 1 includes a fire cover body 11, a fire outlet 12, a fire transfer groove 13 and a flow stabilizing structure 14. Specifically, the fire outlet 12 and the fire transfer groove 13 are both arranged on the fire cover body 11. A gas mixing chamber 114 is formed inside the fire cover body 11, and the combustible gas and air are mixed in the gas mixing chamber 114 and buffered in the gas mixing chamber 114. The fire outlet 12 is usually arranged on the side of the fire cover body 11. The fire outlet 12 is connected to the gas mixing chamber 114, so that the combustible gas in the gas mixing chamber 114 can enter the fire outlet 12. One end of the fire transfer groove 13 extends toward the position of the fire outlet 12 so as to be close to the fire outlet 12, and the other end of the fire transfer groove 13 extends toward the center position so as to be close to the inner ring fire. At the same time, the flow stabilizing structure 14 is arranged in the gas mixing chamber 114, and the flow stabilizing structure 14 has a containing chamber 141 capable of containing combustible gas, the containing chamber 141 is connected to the gas mixing chamber 114, and the size of the channel area connecting the two needs to be defined according to the design requirements, and the fire transfer groove 13 is connected to the containing chamber 141 of the flow stabilizing structure 14. In this way, the combustible gas in the gas mixing chamber 114 can flow to the fire outlet 12 and the containing chamber 141 respectively. The two ends of the fire transfer groove 13 are respectively close to the positions of the fire outlet 12 and the inner ring fire. Therefore, when the gas flowing out of the fire transfer groove 13 is ignited by the inner ring fire, the flame is conducted along the trajectory of the fire transfer groove 13 to the position of the fire outlet 12, and the gas flowing out of the fire outlet 12 can be ignited to form an outer ring flame at the fire outlet 12. Since the speed at which the gas flows out of the fire transfer groove 13 will affect the stability of the flame, when the gas flows out too fast, the flame will be separated or de-fired, and the fire transfer cannot be realized reliably. Therefore, in the embodiment of the present invention, a flow stabilizing structure 14 is provided in the gas mixing chamber 114, and the flow stabilizing structure 14 is used to slow down the flow rate of the combustible gas in the gas mixing chamber 114 entering the accommodating chamber 141, so that the flow rate of the combustible gas in the accommodating chamber 141 is reduced, so that the combustible gas in the accommodating chamber 141 can be evenly distributed at various positions of the fire transfer groove 13, and after being ignited, the flame can burn stably in the fire transfer groove 13 without separation or de-fire, thereby achieving the purpose of stable fire transfer and improving the reliability of flame transfer through the fire transfer groove 13.

[0044] like Figure 3 and Figure 4 As shown, in some embodiments, the outer ring fire cover 1 (refer to Figure 1) also includes a first flame transmission hole 115 and a gas transmission channel 116. The first flame transmission hole 115 is arranged in the fire cover body 11, and the first flame transmission hole 115 is adjacent to the fire outlet hole 12. At the same time, one end of the first flame transmission hole 115 extends toward the accommodating cavity 141, and can be connected or not connected with the accommodating cavity 141 according to design requirements. The gas transmission channel 116 is arranged inside the fire cover body 11 and is located below the first flame transmission hole 115. The gas transmission channel 116 is used to connect the first flame transmission hole 115 with the gas mixing cavity 114. When one end of the first flame transmission hole 115 is connected with the accommodating cavity 141, the combustible gas in the accommodating cavity 141 can also flow into the first flame transmission hole 115, thereby further reducing the flow rate of the combustible gas in the accommodating cavity 141. When one end of the first flame transmission hole 115 is not connected with the accommodating cavity 141, the combustible gas is input into the first flame transmission hole 115 through the gas channel 116. Specifically, since the first fire transmission hole 115 is also connected to the fire transmission groove 13, and the first fire transmission hole 115 is connected to the gas mixing chamber 114 through the gas transmission channel 116, the gas in the gas mixing chamber 114 can flow to the first fire transmission hole 115 through the gas transmission channel 116, so as to supply gas to the first fire transmission hole 115. In this way, the gas flowing out of the first fire transmission hole 115 can be ignited by the flame in the fire transmission groove 13, and then the flame is conducted along the path of the first fire transmission hole 115, and finally ejected from one end of the first fire transmission hole 115 close to the fire outlet hole 12, so as to ignite the gas flowing out of the fire outlet hole 12. In this way, the flame formed at the fire outlet hole 12 can be ignited together by the fire transmission groove 13 and the first fire transmission hole 115, thereby improving the reliability of the ignition of the combustible gas at the fire outlet hole 12.

[0045] like Figures 1 to 4As shown, in some embodiments, the fire cover body 11 includes an annular top wall 111 and an inner annular wall 112 and an outer annular wall 113 respectively connected to the inner and outer edges of the top wall 111. The annular top wall 111 is a closed annular structure connected end to end, and its shape can be set according to the requirements of the actual design, and can be a circular ring, or a closed annular structure of other shapes such as a pentagon or a hexagon. In the embodiment of the present invention, it is preferred that the top wall 111 is provided with an inner annular wall 112 and an outer annular wall 113 on one side respectively connected to the two opposite edges of the top wall 111 (i.e., the inner edge of the top wall 111 close to the inner ring fire and the outer edge of the top wall 111 away from the outer ring fire), and is extended along the contour line of the top wall 111 and connected end to end. The other side of the inner annular wall 112 and the outer annular wall 113 extends a proper distance away from the top wall 111, so that the other side of the inner annular wall 112 and the outer annular wall 113 are at a certain distance from the top wall 111, and the distance between the inner annular wall 112 and the outer annular wall 113 is the width of the top wall 111. Thus, a gas mixing chamber 114 is formed between the top wall 111, the inner annular wall 112 and the outer annular wall 113, and the gas required for combustion (the gas is mainly a mixture of combustible gas and air) is stored and accommodated by the gas mixing chamber 114, so that the gas required for combustion can be evenly distributed to meet the gas supply demand during combustion. In the setting, the top wall 111 connected between the inner annular wall 112 and the outer annular wall 113 can be set horizontally or inclined. When the inclined setting is adopted, usually in the normal installation state, the position of the side where the top wall 111 is connected to the inner annular wall 112 is set to be lower than the position of the side where the top wall 111 is connected to the outer annular wall 113. The side of the inner annular wall 112 and the outer annular wall 113 extending in the direction away from the top wall 111 can extend vertically downward or can extend obliquely downward.

[0046] like Figures 1 to 4As shown, in some embodiments, the fire hole 12 is provided on the outer ring wall 113 and extends toward the inside of the outer ring wall 113, so as to be connected with the gas mixing chamber 114, so that the gas in the gas mixing chamber 114 can flow to the fire hole 12, so as to burn outside the fire hole 12 to form a flame. The direction in which the fire hole 12 extends toward the inside of the outer ring wall 113 can be inclined or horizontal, provided that it is connected with the gas mixing chamber 114. Specifically, a plurality of fire holes 12 are provided, each of which is distributed along the circumference of the shape of the outer ring wall 113, and each of the fire holes 12 is spaced apart by a preset distance, and at the same time, each of the fire holes 12 extends toward the inside of the outer ring wall 113 to achieve communication with the gas mixing chamber 114. Preferably, each of the fire holes 12 is provided on the outer circle at the same position, and each of the fire holes 12 is evenly distributed at equal intervals, so that an outer ring fire can be formed when each of the fire holes 12 burns with flames at the same time. In actual configuration, the distance between two adjacent ignition holes 12 is preferably such that the gases flowing out of the two adjacent ignition holes 12 can be ignited by each other.

[0047] like Figure 1 As shown, in some embodiments, the fire transfer groove 13 is provided on the top wall 111 and extends toward the outer ring wall 113, and the fire transfer groove 13 is used to conduct the flame to the fire outlet hole 12. In order to reliably conduct the flame of the inner ring fire to the fire outlet hole 12 through the fire transfer groove 13, one end of the fire transfer groove 13 can be extended toward the position of the fire outlet hole 12 so as to be close to the fire outlet hole 12, and the other end of the fire transfer groove 13 can be extended toward the direction where the inner ring fire is located so as to be close to the inner ring fire. Specifically, the end of the fire transfer groove 13 extending toward the fire outlet hole 12 can be as close to the position of one of the fire outlet holes 12 as possible, or the end of the fire transfer groove 13 can be extended in the middle of two adjacent fire outlet holes 12, and can be located at the midpoint of the line connecting the two adjacent fire outlet holes 12, or close to one of the fire outlet holes 12, so as to improve the reliability of igniting the gas flowing out of the fire outlet hole 12. The end of the fire transfer groove 13 extending toward the inner ring fire can be extended to the inner edge as much as possible, and the end of the fire transfer groove 13 can be set to be inclined to improve the smoothness of the gas flowing toward the direction where the inner ring fire is located, so as to achieve the purpose of being successfully ignited by the inner ring fire.

[0048] like Figure 2 and Figure 4As shown, in a possible embodiment, the first flame transmission hole 115 is disposed adjacent to the fire outlet hole 12 in the outer ring wall 113, and one end of the first flame transmission hole 115 extends toward the accommodating cavity 141 in the inner part of the outer ring wall 113, and does not penetrate the side wall of the accommodating cavity 141. Specifically, the end of the first flame transmission hole 115 extending in the inner part of the outer ring wall 113 extends toward the direction where the accommodating cavity 141 is located, but does not penetrate the side wall of the accommodating cavity 141, so that the gas in the accommodating cavity 141 does not directly flow into the first flame transmission hole 115. The first flame transmission hole 115 extends to the flame transmission groove 13 (refer to Figure 1 ) are connected so that the flame burning in the fire transfer groove 13 can be conducted to the first fire transfer hole 115, and after being conducted through the first fire transfer hole 115, it can burn at a position close to the fire outlet hole 12, and play a role in igniting the gas flowing out of the fire outlet hole 12. In this way, the flame is conducted through the first fire transfer hole 115 and combined with the flame conducted through the fire transfer groove 13 to jointly ignite the gas flowing out of the fire hole, thereby improving the reliability of flame conduction. The position of the first fire transfer hole 115 on the outer ring wall 113 can be as close as possible to the position of one of the fire outlet holes 12, but not through, and maintain an appropriate spacing. It is also possible to adopt the method of setting the first fire transfer hole 115 in the middle of two adjacent fire outlet holes 12, and it can be located at the midpoint of the line connecting the two adjacent fire outlet holes 12, or close to one of the fire outlet holes 12, so as to reliably ignite the gas flowing out of the fire outlet hole 12. In the embodiment of the present invention, it is preferred to set the first fire transmission hole 115 and the fire transmission groove 13 in the area between the same two fire outlet holes 12, and the fire transmission groove 13 is located above the first fire transmission hole 115. Moreover, taking the state of the outer ring fire cover 1 after normal installation as a position reference, the position of the first fire transmission hole 115 on the outer ring wall 113 is lower than the position of the fire outlet hole 12 on the outer ring wall 113. In this way, the flame burning in the first fire transmission hole 115 can ignite the fire outlet hole 12 below the fire outlet hole 12, and work together with the flame in the fire transmission groove 13 located above, so as to improve the reliability of igniting the gas in the fire outlet hole 12.

[0049] like Figure 2 and Figure 4As shown, in a possible implementation, a gas delivery channel 116 is provided inside the outer annular wall 113 and is located below the first fire transfer hole 115. The gas delivery channel 116 is used to connect the first fire transfer hole 115 with the gas mixing chamber 114. Specifically, one end of the gas delivery channel 116 is connected to the first fire transfer hole 115, and the other end of the gas delivery channel 116 is connected to the gas mixing chamber 114. In this way, through the connection of the gas delivery channel 116, the gas in the gas mixing chamber 114 can enter the first fire transfer hole 115, and gas is transported to the first fire transfer hole 115, so that the first fire transfer hole 115 can realize the fire transfer function. In actual settings, there can be many ways for the path of the gas delivery channel 116 to extend inside the outer annular wall 113, and it is only necessary to make the set gas delivery channel 116 able to connect the first fire transfer hole 115 with the gas mixing chamber 114. In the embodiment of the present invention, since the first flame transmission hole 115 is located above the gas transmission channel 116, it is preferred that the gas transmission channel 116 is arranged to extend vertically upward, so as to shorten the length of the gas transmission channel 116 and improve the efficiency of gas transmission.

[0050] like Figures 2 to 5 As shown, in some embodiments, the flow stabilizing structure 14 includes a flow stabilizing chamber 142 and a cover plate 143. The flow stabilizing chamber 142 is arranged in the gas mixing chamber 114 and is connected to the fire cover body 11, and the flow stabilizing chamber 142 has an opening connected to the gas mixing chamber 114; the cover plate 143 covers the opening and is connected to the flow stabilizing chamber 142, so that the accommodating chamber 141 is formed between the flow stabilizing chamber 142 and the cover plate 143. The cover plate 143 is used to regulate the flow rate of the combustible gas entering the accommodating chamber 141. That is, the size of the opening of the accommodating chamber 141 is controlled by the cover plate 143, so that the size of the channel for the accommodating gas to enter the opening is limited according to the design requirements, and because the accommodating chamber 141 has a certain volume, it is usually greater than the total amount of gas entering the accommodating chamber from the opening per unit time. In this way, after the combustible gas enters the accommodating chamber through the opening, the speed will be slowed down, thereby realizing the function of regulating the flow rate of the combustible gas. Specifically, the flow-stabilizing chamber 142 can be formed by connecting a plurality of side panels end to end, with the same end of each side panel connected to the top wall 111, and the same other end of each side panel extending in the same direction with an appropriate length to form the accommodating chamber 141, and the opening is also formed at this end. The fire transfer groove 13 is arranged at the position of the top wall 111 corresponding to the flow-stabilizing chamber 142, so that the fire transfer groove 13 can be connected to the accommodating chamber 141. The shape formed by the flow-stabilizing chamber 142 can have various forms, such as circular, rectangular, trapezoidal, etc., and the shape of the cover plate 143 is kept matching with the shape of the flow-stabilizing chamber 142, so that the cover plate 143 can realize the regulation of the opening size of the flow-stabilizing chamber 142.

[0051] In some embodiments, the cover plate 143 can be rotatably connected to the flow stabilizing chamber 142 via a rotating shaft, and can be closed on the opening to close or open the opening. In this way, the size of the opening can be adjusted by rotating the cover plate 143 as needed, so that the amount of combustible gas entering the accommodating chamber 141 can be throttled and controlled, thereby preventing the gas flow rate entering the flow stabilizing chamber 142 from being too fast, resulting in the flame transfer groove 13 (refer to Figure 1 ) The burning flame is separated from the flame or the flame is out of flame. The cover plate 143 is cleverly arranged and reliably meets the use requirements of the fire transfer groove 13 for stable fire transfer.

[0052] like Figure 4 and Figure 5 As shown, in an embodiment of the present invention, the cover plate 143 includes a cover plate body 1431 and a throttling structure 1432. The cover plate body 1431 is covered on the opening and is connected to the flow stabilization chamber 142 through a connector 10, so that the cover plate body 1431 can be stably covered on the opening to cover the opening. The throttling structure 1432 is provided on the cover plate body 1431, and the throttling structure 1432 is used to connect the accommodating chamber 141 with the gas mixing chamber 114, and can adjust and control the intake amount of the combustible gas into the accommodating chamber 141. That is, the opening is first covered by the cover plate body 1431, and then the throttling structure 1432 is provided on the cover plate body 1431 to allow the gas in the gas mixing chamber 114 to enter the accommodating chamber 141. This arrangement is equivalent to adjusting the size of the opening through which gas can flow through the throttling structure 1432, thereby avoiding the entire opening being completely open, and playing a role in adjusting the gas flow entering the accommodating chamber 141, so that the flow rate of the entering gas is reduced. The connecting piece 10 used to connect the cover body 1431 to the flow stabilizing chamber 142 can be a screw or a hook. Alternatively, a slide groove can be provided on the flow stabilizing chamber 142, and the cover body 1431 can be inserted into the slide groove to achieve connection.

[0053] like Figure 5 As shown, in some embodiments, a plurality of throttling structures 1432 may be provided, and each throttling structure 1432 is spaced apart by a preset distance. Specifically, in actual settings, the throttling structure 1432 may be provided in the form of a through hole or a groove, and may penetrate the thickness of the cover body 1431. Thus, the accommodating chamber 141 is connected to the gas mixing chamber 114, so that the gas can enter the accommodating chamber 141. The number of throttling structures 1432 provided on the cover body 1431 is suitable so as to be able to throttle and reduce the flow rate of the gas, and to enable the total amount of gas entering the accommodating chamber 141 through each throttling structure 1432 to meet the requirements of flame combustion in the fire transfer groove 13.

[0054] In some embodiments, the sum of the areas of the throttling structures 1432 is preferably set to be smaller than the sum of the areas of the flame transfer groove 13 and the first flame transfer hole 115. In this way, the total amount of gas entering the accommodating chamber 141 through the throttling structures 1432 can meet the gas supply demand during combustion, and will not cause the flow rate of the entering gas to be too fast, resulting in flame separation or flameout during combustion, and the design is ingenious.

[0055] like Figure 4 and Figure 5 As shown, in some embodiments, a first connection hole 1433 is provided on the cover body 1431, a second connection hole 1421 is provided on the flow stabilizing chamber 142, and then one end of the connector 10 is passed through the first connection hole 1433 and connected to the second connection hole 1421. In this arrangement, the connector 10 is preferably a screw, the second connection hole 1421 is set as a threaded hole that can be threadedly connected to the connector 10, and the first connection hole 1433 can be a light hole or a recess through which the connector 10 can pass directly, or it can be a threaded hole that can be connected to the connector 10. In this way, when connecting, after one end of the connector 10 passes through the first connection hole 1433 and then is fixedly connected to the second connection hole 1421, the cover 143 can be reliably connected to the flow stabilizing chamber 142. Of course, it is understandable that a plurality of first connection holes 1433 may be provided on the cover body 1431, and a plurality of second connection holes 1421 may be correspondingly provided on the flow stabilization chamber 142. Thus, the cover body 1431 may be fixed by a plurality of connectors 10 to ensure stability and reliability.

[0056] like Figure 4 and Figure 5As shown, in some embodiments, a positioning notch 1434 is provided on the cover body 1431, and a positioning post 1422 is provided on the flow stabilizing chamber 142, and the positioning post 1422 is stuck in the positioning notch 1434; or a positioning post 1422 is provided on the cover body 1431, and a positioning hole is provided on the flow stabilizing chamber 142, and the positioning post 1422 is inserted in the positioning hole. Specifically, it is preferred to set the positioning notch 1434 to be semicircular to match the shape of the positioning post 1422, so that the positioning post 1422 can be stuck in and positioned. Similarly, the shape of the positioning hole used to cooperate with the positioning post 1422 is also set to match the shape of the positioning post 1422, so that the positioning post 1422 can be inserted into the positioning hole. With such a configuration, when the cover body 1431 is connected to the flow stabilizing chamber 142, the position of the cover body 1431 covering the flow stabilizing chamber 142 can be positioned by the cooperation between the positioning column 1422 and the positioning notch 1434, or the cooperation between the positioning column 1422 and the positioning hole, so that the cover body 1431 can be accurately covered on the flow stabilizing chamber 142, thereby improving the convenience of connecting the cover body 1431 to the flow stabilizing chamber 142. In the embodiment of the present invention, the first connecting hole 1433 is configured as a notch, and the shape of the notch is substantially the same as that of the positioning notch 1434, which can meet the snap-in fit of the positioning column 1422. In this way, when installing the cover 143, the notch and the positioning notch 1434 can be used interchangeably, thereby improving the convenience of installing the cover 143.

[0057] In some embodiments, the aperture of the first flame transmission hole 115 can be set to be larger than the aperture of the flame outlet hole 12. In this way, the gas output of the first flame transmission hole 115 is larger than the gas output of the flame outlet hole 12, so that after the gas in the first flame transmission hole 115 is ignited, a larger flame can be formed, thereby improving the reliability of igniting the gas flowing out of the gas outlet hole.

[0058] like Figure 1 As shown, in the embodiment of the present invention, the fire cover body 11 is set to be annular. In this way, the top wall 111 is also annular. In this way, it is preferred to extend the fire transfer groove 13 along the radial direction of the fire cover body 11, so that the length of the fire transfer groove 13 formed by extending on the top wall 111 is shorter, and then the distance of flame conduction is also shorter, which is conducive to improving the reliability of flame conduction. In addition, this kind of fire transfer groove 13 extending along the radial direction of the fire cover body 11 can also improve the overall aesthetics.

[0059] like Figure 4 and Figure 5As shown, in some embodiments, the outer ring fire cover 1 further includes a flame stabilizing groove 16 and an air supply hole 17. The flame stabilizing groove 16 is arranged around the circumferential direction of the outer ring wall 113 and extends to the inside of the outer ring wall 113. In this way, the flame stabilizing groove 16 formed on the outer ring wall 113 is circular and has a certain depth. The air supply hole 17 is arranged in the outer ring wall 113, and the air supply hole 17 is used to connect the flame stabilizing groove 16 and the gas mixing chamber 114, so that the gas in the gas mixing chamber 114 can enter the flame stabilizing groove 16 through the air supply hole 17 and burn. Specifically, the flame stabilizing groove 16 is located below the fire outlet hole 12, and the first fire transmission hole 115 is connected to the flame stabilizing groove 16. In this way, the flame burning at the first fire transmission hole 115 can ignite the gas in the flame stabilizing groove 16. At the same time, since the flame stabilizing groove 16 is located below the fire outlet hole 12, the flame burning at the flame stabilizing groove 16 can also ignite the gas in the fire outlet hole 12 located above. In this way, the flame formed at the flame stabilizing groove 16 and the flame formed at the fire outlet 12 can together form an outer ring fire. In the specific setting, in order to meet the gas supply needs of the flame burning in the flame stabilizing groove 16, a plurality of gas supply holes 17 are provided, and a plurality of each gas supply hole 17 is provided at intervals along the circumferential direction of the flame stabilizing groove 16. In this way, the flame stabilizing groove 16 can be supplied with gas through a plurality of gas supply holes 17, so that the flame at the flame stabilizing groove 16 can burn stably. The gas supply holes 17 provided in the outer ring wall 113 are preferably connected to the flame stabilizing groove 16 in a manner of extending vertically upward.

[0060] like Figure 3 As shown, in some embodiments, the first flame transmission hole 115 is horizontally extended. In this way, it is not only easy to manufacture, but also the length of the first flame transmission hole 115 is shorter, which shortens the conduction distance of the flame in the first flame transmission hole 115, is conducive to the rapid conduction of the flame, reduces the time required for the flame transmission, and meets the use requirement that the outer ring fire can be quickly ignited.

[0061] like Figure 1 and Figure 4 As shown, in some embodiments, the first flame transmission hole 115 can also be arranged to extend obliquely. The oblique manner is that the end of the first flame transmission hole 115 close to the steady flow chamber 142 is lower than the end of the first flame transmission hole 115 close to the fire outlet 12. That is, the fire cover 1 (refer to Figure 1 ) is used as a reference for the position after installation. In the height direction, the position of the flow stabilizing chamber 142 is lower than the position of the fire outlet 12. In this way, the first fire transmission hole 115 is formed to be inclined upward, which is roughly the same as the direction of gas transmission upward, which is conducive to the transmission of gas into the first fire transmission hole 115.

[0062] like Figure 2 and Figure 3As shown, in some embodiments, the circumferential extension direction of the flame stabilizing groove 16 passes through the first fire transfer hole 115, and the depth direction of the flame stabilizing groove 16 extends horizontally toward the inside of the outer ring wall 113. That is, the flame stabilizing groove 16 is circumferentially arranged on the outer ring wall 113, and the circumferential extension direction passes through the inside of the first fire transfer hole 115, so that a gap is formed on the side wall of the first fire transfer hole 115, and the first fire transfer hole 115 and the flame stabilizing groove 16 are connected. The depth direction of the flame stabilizing groove 16 extends horizontally toward the inside of the outer ring wall 113 for a suitable distance, preferably not penetrating in the thickness direction of the outer ring wall 113; and the first fire transfer hole 115 also extends horizontally toward the inside of the outer ring wall 113. Therefore, under this arrangement, with the height direction of the fire cover body 11 after installation as a reference, the first fire transfer hole 115 and the flame stabilizing groove 16 are basically at the same height of the outer ring wall 113. In this way, the first flame transfer hole 115 and the flame stabilizing groove 16 share part of the inner cavity, and the combustible gas can flow between the two, thereby improving the reliability of the first flame transfer hole 115 transmitting the flame to the flame stabilizing groove 16. Of course, it can be understood that in other embodiments, under the premise that the first flame transfer hole 115 is connected to the flame stabilizing groove 16 and the flame can be stably formed in the flame stabilizing groove 16, the flame stabilizing groove 16 can also be extended in other forms inside the outer annular wall 113, such as extending obliquely to intersect with the first flame transfer hole 115.

[0063] like Figure 1 and Figure 2 As shown, in a possible embodiment, the outer ring fire cover 1 also includes a second fire transfer hole 18. The second fire transfer hole 18 is arranged on the inner ring wall 112 and / or the top wall 111, and the second fire transfer hole 18 is connected to the gas mixing chamber 114. The second fire transfer hole 18 is used to guide the flame into the fire transfer groove 13. Specifically, the position where the second fire transfer hole 18 is arranged is closer to the inner ring fire than the distance between the fire transfer groove 13 and the inner ring fire, so that the gas in the gas mixing chamber 114 can be guided to the position where the inner ring fire is located, so that it can be ignited by the inner ring fire, and then the gas in the fire transfer groove 13 can be ignited, thereby improving the reliability of the gas ignition in the fire transfer groove 13. In the specific setting, a plurality of second fire transfer holes 18 can be arranged, and each second fire transfer hole 18 is connected to the fire transfer groove 13. Moreover, each second fire transfer hole 18 is spaced apart in the width direction of the fire transfer groove 13. In this way, the gas in the fire transfer groove 13 can be quickly ignited by the inner ring fire after flowing out from each second fire transfer hole 18, thereby achieving the purpose of being able to quickly ignite and form an outer ring fire.

[0064] like Figure 6As shown, in a possible embodiment, the outer ring fire cover 1 further includes a fire-conducting notch 19. The fire-conducting notch 19 is provided between the top wall 111 and the outer ring wall 113. That is, the fire-conducting notch 19 is provided at the portion adjacent to the top wall 111 and the side wall. Specifically, since the material thickness at the connection between the top wall 111 and the side wall is relatively large, and the fire-conducting notch 19 is provided by removing part of the material at the connection between the top wall 111 and the side wall, the fire-conducting notch 19 plays a role in reducing the distance of the flame from being conducted to the fire outlet 12, so that the fire-conducting groove 13 (refer to Figure 1 ) can be transferred to the fire outlet 12 more quickly. In addition, the provision of the fire-conducting notch 19 also reduces the depth of the fire-conducting groove 13 at the corresponding position, so that the gas at this position can be smoothly output and burned, thereby improving the reliability of the flame conduction of the fire-conducting groove 13.

[0065] In the outer ring fire cover 1 provided in the embodiment of the present invention, a gas mixing chamber 114 is formed inside the fire cover body 11, and a flow stabilization chamber 142 is arranged in the gas mixing chamber 114. A cover plate body 1431 is covered on the opening of the flow stabilization chamber 142, and a throttling structure 1432 for connecting the accommodating chamber 141 of the flow stabilization chamber 142 with the gas mixing chamber 114 is arranged on the cover plate body 1431. At the same time, the throttling structure 1432 has the function of adjusting the gas flow rate in the accommodating chamber 141 of the flow stabilization chamber 142. In this way, after the adjustment of the throttling structure 1432, the gas flow rate and speed entering the flow stabilization chamber 142 from the gas mixing chamber 114 are adjusted, the flow rate of the gas in the fire transfer groove 13 is reduced, and the gas can be evenly distributed, so that the flame will not be de-fired or separated when burning in the fire transfer groove 13, and a stable combustion state is achieved, so that the flame can be reliably transmitted, and the safety and reliability of use are improved.

[0066] like Figure 7 As shown, a burner 2 is also provided in the embodiment of the present invention, which can be a gas burner, which can be applied to household appliances such as gas cookers, gas water heaters and gas ovens as a thermal energy device. It should be noted that the application scenario type in the present invention does not limit the burner 2 in the present invention.

[0067] like Figure 7As shown, the burner 2 includes an inner ring fire burner head 21, an inner ring fire cover 22, an outer ring fire burner head 23 and the outer ring fire cover 1 mentioned above. The inner ring fire burner head 21 is used to form an inner ring flame, and the inner ring fire cover 22 is covered on the inner ring fire burner head 21; the outer ring fire burner head 23 is used to form an outer ring flame, and the outer ring fire cover 1 is covered on the outer ring fire burner head 23. Moreover, after installation, the outer ring fire cover 1 surrounds the outer side of the inner ring fire cover 22 and is arranged cocentrically with the inner ring fire cover 22. Specifically, in actual applications, when the burner 2 is in use, usually after ignition, an inner ring fire is first formed on the inner ring fire burner head 21, and when it is necessary to form an outer ring fire, the gas on the outer ring fire burner head 23 can be ignited by the inner ring fire, and the flame can stably burn on the outer ring fire burner head 23 to form an outer ring fire. When the outer ring fire cover 1 is conducting flame, the flow rate of the gas is controlled so that the conducted flame can burn stably without flame separation or flameout. Therefore, the burner 2 in the embodiment of the present invention can reliably conduct the inner ring fire to the outer ring fire burner head 23 by using the outer ring fire cover 1, so as to ignite the gas on the outer ring fire burner head 23 to form the outer ring fire, thereby improving the timeliness and reliability of the ignition of the outer ring fire on the burner 2.

[0068] A stove is also provided in an embodiment of the present invention, including the burner 2 mentioned above. The burner 2 has the advantages of rapid fire transmission and good stability. Therefore, when the stove uses the burner 2 mentioned above, the flame used for ignition can burn stably when igniting the outer ring fire, and there will be no fire transmission blocking phenomenon, so that the outer ring fire can be ignited in time and quickly. At the same time, the burner 2 has a strong flame stabilization performance when transmitting fire, and enhances the adaptability to the size of the air door opening width. Reliable fire transmission can also be achieved under the condition of a large air door opening width, which well meets the fire transmission requirements in actual use.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outer ring fire cover, characterized in that: include: The fire cover body has a gas mixing chamber formed inside; A fire outlet hole is arranged on the fire cover body, the fire outlet hole is connected with the gas mixing chamber, and the fire outlet hole is used to form an outer ring fire; A fire transfer groove is provided on the fire cover body, and is used to transfer the flame to the fire outlet hole; A flow stabilizing structure is arranged in the gas mixing chamber, the flow stabilizing structure has a containing chamber for containing the combustible gas, the flame transfer groove is connected to the containing chamber, and the flow stabilizing structure is used to slow down the flow rate of the combustible gas entering the containing chamber; The flow stabilizing structure comprises a flow stabilizing chamber and a cover plate, wherein the flow stabilizing chamber is arranged in the gas mixing chamber and connected to the fire cover body, and the flow stabilizing chamber has an opening connected to the gas mixing chamber; the cover plate covers the opening and is connected to the flow stabilizing chamber, and the accommodating chamber is formed between the flow stabilizing chamber and the cover plate; Among them, the cover plate includes a cover plate body and a throttling structure, the cover plate is arranged on the opening, and the cover plate body is connected to the flow stabilization chamber through a connecting piece; the throttling structure is opened on the cover plate body, and the throttling structure is used to regulate the intake amount of combustible gas entering the accommodating cavity.

2. The outer ring fire cover according to claim 1, characterized in that: The outer ring fire cover also includes: A first fire transmission hole, adjacent to the fire outlet hole, is arranged in the fire cover body, one end of the first fire transmission hole extends toward the accommodating cavity and is connected or not connected with the accommodating cavity; The gas delivery channel is arranged inside the fire cover body and is located below the first fire transfer hole. The gas delivery channel is used to connect the first fire transfer hole with the gas mixing chamber.

3. The outer ring fire cover according to claim 2, characterized in that: A plurality of throttling structures are provided, and each throttling structure is spaced apart by a preset distance.

4. The outer ring fire cover according to claim 3, characterized in that: The sum of the areas of the throttling structures is smaller than the sum of the areas of the fire transfer groove and the first fire transfer hole.

5. The outer ring fire cover according to claim 2, characterized in that: The cover plate body is provided with a first connecting hole, the flow stabilizing chamber is provided with a second connecting hole, and one end of the connecting member passes through the first connecting hole and is connected to the second connecting hole.

6. The outer ring fire cover according to claim 2, characterized in that: The cover body is provided with a positioning notch, the stabilizing chamber is provided with a positioning column, and the positioning column is clamped in the positioning notch; or the cover body is provided with a positioning column, the stabilizing chamber is provided with a positioning hole, and the positioning column is inserted in the positioning hole.

7. The outer ring fire cover according to claim 2, characterized in that: The fire cover body comprises an annular top wall, and an inner ring wall and an outer ring wall respectively connected to the inner and outer edges of the top wall, and the gas mixing chamber is formed between the top wall, the inner ring wall and the outer ring wall; Wherein, the fire outlet hole is opened on the outer ring wall; the fire transfer groove is arranged on the top wall and extends toward the outer ring wall; the first fire transfer hole is arranged in the outer ring wall adjacent to the fire outlet hole.

8. The outer ring fire cover according to any one of claims 2 to 7, characterized in that: The aperture of the first fire transmission hole is larger than the aperture of the fire outlet hole.

9. The outer ring fire cover according to any one of claims 1 to 7, characterized in that: The fire cover body is in the shape of a circular ring, and the fire transfer groove extends along the radial direction of the fire cover body.

10. The outer ring fire cover according to claim 7, characterized in that: The outer ring fire cover also includes: A flame stabilizing groove is arranged around the outer ring wall in a circumferential direction and extends toward the inner part of the outer ring wall; An air supply hole is provided in the outer ring wall, and the air supply hole is used to connect the flame stabilizing groove and the gas mixing chamber; Wherein, the flame stabilizing groove is located below the fire outlet hole, and the first fire transfer hole is connected to the flame stabilizing groove.

11. The outer ring fire cover according to claim 2, characterized in that: The first fire transmission hole is arranged to extend horizontally.

12. The outer ring fire cover according to claim 2, characterized in that: The first fire transfer hole extends obliquely, and an end of the first fire transfer hole close to the stabilizing chamber is lower than an end of the first fire transfer hole close to the fire outlet hole.

13. The outer ring fire cover according to claim 10, characterized in that: The circumferential extension direction of the flame stabilizing groove passes through the first fire transfer hole, and the depth direction of the flame stabilizing groove extends horizontally toward the inside of the outer annular wall.

14. The outer ring fire cover according to claim 7, characterized in that: The outer ring fire cover also includes: The second fire transfer hole is arranged on the inner ring wall and / or the top wall, the second fire transfer hole is communicated with the gas mixing chamber, and the second fire transfer hole is used to guide the flame into the fire transfer groove.

15. The outer ring fire cover according to claim 7, characterized in that: The outer ring fire cover also includes: A fire-conducting notch is provided between the top wall and the outer ring wall, and the fire-conducting notch is used to shorten the distance for the flame to be conducted to the fire outlet.

16. A burner, characterized in that: include: Inner ring burner head, used to form inner ring flame; An inner ring fire cover, which is arranged on the inner ring fire stove head; An outer ring burner head is used to form an outer ring flame; The outer ring fire cover according to any one of claims 1 to 15, wherein the outer ring fire cover is arranged on the outer ring fire burner head; Wherein, the outer ring fire cover surrounds the outer side of the inner ring fire cover and is arranged cocentrically with the inner ring fire cover.

17. A cooking appliance, characterized in that: Comprising the burner of claim 16.

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