Flame stabilizing burner and gas stove

Abstract

The utility model discloses a flame stabilizing burner and a gas stove, belongs to the technical field of cooking stoves, and is designed for solving the problems that the flame separation phenomenon is easy to occur when high-pressure and high-flow-speed mixed gas flows through fire holes, and the like. The utility model discloses a flame stabilizing burner which comprises a gas distributing seat and a burner body. An inner ring fire cover; the flow choking part is arranged on the gas distribution seat and / or the inner ring fire cover; when the flow choking part is arranged on the air distribution seat, the air distribution seat air distribution cavity between two adjacent air distribution seat airflow separators is communicated to the inner ring air outlet; when the flow choking part is arranged on the inner ring fire cover, an inner ring fire cover air outlet cavity is formed between every two adjacent inner ring fire cover airflow separators. According to the flame-stabilizing burner and the gas stove, the flow blocking part can divide a strand of mixed gas of combustible gas and air flowing in from the furnace end into a plurality of strands of airflow, the flow speed of the mixed gas of the combustible gas and the air is effectively reduced, flame separation is prevented, and the stability of flame combustion is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking stoves, in particular to a flame stabilizing burner and a gas stove. Background Art

[0002] A gas stove is a device that generates heat by burning gas, a mixture of combustible gases and air. A gas stove's burner typically consists of a burner head, a gas distributor, and a flame cap. The mixed gas enters the distributor head through the burner head. Within the distributor head, the mixed gas is distributed to the inner and outer ring flame caps, where it is ejected through the flame holes in the flame caps for combustion.

[0003] To ensure a continuous flow of mixed gas into the gas distributor, pressure is usually applied to the mixed gas to increase its flow rate. However, when the high-pressure, high-flow mixed gas flows through the flame holes, it is prone to flame separation, resulting in unstable and incomplete combustion, which affects the thermal efficiency of the stove. Utility Model Content

[0004] The utility model aims to provide a flame-stabilizing burner and a gas stove, which solve the problem of flame separation when a high-pressure and high-velocity mixed gas flows through a fire hole, and the flame combustion is more stable.

[0005] To achieve this purpose, on the one hand, the present invention adopts the following technical solutions:

[0006] A flame-stabilizing burner comprises: an air-distributing seat on which an inner-ring air outlet is arranged; an inner-ring fire cover, comprising a top cover and a side wall connected to each other, with at least two fire holes circumferentially provided on the side wall; and a flow-blocking portion, comprising at least two airflow dividers arranged at intervals, wherein the flow-blocking portion is arranged on the air-distributing seat and / or the inner-ring fire cover; when the flow-blocking portion is arranged on the air-distributing seat, the air-distributing seat air-distributing cavity between two adjacent air-distributing seat airflow dividers is connected to the inner-ring air outlet; when the flow-blocking portion is arranged on the inner-ring fire cover, an inner-ring fire cover air outlet cavity is formed between two adjacent inner-ring fire cover airflow dividers.

[0007] In one of the preferred embodiments, when the flow-blocking portion is arranged on the inner ring fire cover, the inner ring fire cover also includes a gas collecting cylinder, one end of the gas collecting cylinder is connected to the top cover, the gas collecting cylinder and the top cover form a gas collecting cavity, one end of the inner ring fire cover airflow divider is connected to the outer wall surface of the gas collecting cylinder, and the other end of the inner ring fire cover airflow divider is connected to the inner wall surface of the side wall.

[0008] In one preferred embodiment, the gas collecting cylinder is aligned with the inner ring gas outlet.

[0009] In one of the preferred embodiments, when the flow blocking portion is arranged on the air separator seat, one end of the plate-shaped air flow separator of the air separator seat is connected to the inner ring air outlet, and the first edge of the air flow separator of the air separator seat is arranged along the radial direction of the air separator seat, and the angle between the second edge perpendicular to the first edge and the axis of the air separator seat is less than the set value.

[0010] In one preferred embodiment, the top edge of the air flow divider of the air dividing seat gradually rises along the radial outward direction of the air dividing seat.

[0011] In one preferred embodiment, the top edges of two adjacent air flow dividers of the air divider seat are at different heights; or, the top edges of all the air flow dividers of the air divider seat are arranged in a staggered manner.

[0012] In one preferred embodiment, when the flow blocking portion is provided on both the air distribution seat and the inner ring fire cover, a gap is formed between the air flow divider of the air distribution seat and the air flow divider of the inner ring fire cover.

[0013] In one of the preferred embodiments, the number of the air flow dividers of the air distribution seat and the air flow dividers of the inner ring fire cover are the same, and along the circumference of the inner ring fire cover, the air flow dividers of the air distribution seat and the air flow dividers of the inner ring fire cover are staggered.

[0014] In one of the preferred embodiments, the top cover edge of the inner ring fire cover protrudes from the side wall.

[0015] On the other hand, the present invention adopts the following technical solutions:

[0016] A gas stove comprises the above-mentioned flame-stabilizing burner.

[0017] The flame-stabilizing burner disclosed in the present invention includes a gas separation seat, an inner ring fire cover and a flow resistance portion. The flow resistance portion is arranged on the gas separation seat and / or the inner ring fire cover. The flow resistance portion can separate a mixture of combustible gas and air flowing into the burner head into multiple air flows, effectively reducing the flow rate of the mixture of combustible gas and air, thereby preventing flame separation and improving the stability of flame combustion; the flame burns more fully and improves thermal efficiency.

[0018] The gas stove disclosed in the utility model includes the above-mentioned flame-stabilizing burner, and the mixed gas of combustible gas and air is divided into multiple air flows, thereby reducing the flow rate, solving the problem of flame separation during flame combustion, and the flame combustion is more stable and sufficient, with high thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a cross-sectional view of a flame stabilizing burner provided by a specific embodiment of the present utility model;

[0020] Figure 2 yes Figure 1A partial enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the combined structure of the gas distributor and the outer ring fire cover provided by a specific embodiment of the utility model;

[0022] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0023] Figure 5 It is a structural schematic diagram of the inner ring fire cover provided by a specific embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Gas distributor seat; 2. Inner ring fire cover; 3. Burner head; 4. Outer ring fire cover; 11. Inner ring air outlet; 12. Air flow divider of gas distributor seat; 13. Gas distributor cavity of gas distributor seat; 21. Top cover; 22. Side wall; 23. Fire hole; 24. Air flow divider of inner ring fire cover; 25. Inner ring fire cover air outlet cavity; 26. Gas collecting cylinder; 27. Gas collecting cavity; 31. Outer ring gas mixing cavity; 32. Inner ring gas mixing cavity. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0032] This embodiment discloses a flame stabilizing burner and a gas stove including the flame stabilizing burner, which are used to provide heat for cooking. Figures 1 to 5 As shown, the flame-stabilizing burner includes a gas distributor 1, an inner ring fire cover 2 (or copper core), a burner head 3, an outer ring fire cover 4 (or copper cover), and a flow block. For a double-ring burner, the burner head 3 includes an outer ring gas mixing chamber 31 and an inner ring gas mixing chamber 32. The gas distributor 1 includes an inner ring gas distributor connected to the inner ring gas mixing chamber 32 and an outer ring gas distributor connected to the outer ring gas mixing chamber 31. The center of the inner ring gas distributor forms an inner ring gas outlet 11.

[0033] The inner ring fire cover 2 comprises a connected top cover 21 and side walls 22. The side walls 22 are circumferentially provided with at least two fire holes 23. The inner ring fire cover 2 covers the upper end of the inner ring air divider. The inner ring air divider is provided with a positioning structure for mounting the inner ring fire cover 2. The positioning structure may be, but is not limited to, a positioning protrusion or a positioning groove.

[0034] The flow block includes at least two spaced-apart flow dividers, which are used to separate the mixture of combustible gas and air into multiple flow streams. The flow block can be installed only on the gas separation seat 1, only on the inner ring fire cover 2, or on both the gas separation seat 1 and the inner ring fire cover 2.

[0035] When the flow block is mounted on the air separator 1, it comprises at least two spaced-apart, plate-shaped air separators 12. An air separator cavity 13 is formed between two adjacent air separators 12. This cavity 13 communicates with the inner ring air outlet 11. Specifically, one end of each air separator 12 is located at the edge of the inner ring air outlet 11.

[0036] When the flow blocker is provided on the inner ring fire cover 2, the flow blocker includes at least two spaced apart inner ring fire cover airflow dividers 24. All inner ring fire cover airflow dividers 24 are located within the side wall 22 and are radially distributed. An inner ring fire cover air outlet cavity 25 is formed between two adjacent inner ring fire cover airflow dividers 24, and the inner ring fire cover air outlet cavity 25 is connected to the fire hole 23.

[0037] The flow-blocking portion can separate a stream of mixed gas of combustible gas and air flowing in from the burner head 3 into multiple streams, effectively reducing the flow rate of the mixed gas of combustible gas and air, thereby preventing flame separation and improving the stability of flame combustion; the flame burns more fully, thereby improving the thermal efficiency of the gas stove.

[0038] When both the air distribution seat 1 and the inner ring fire cover 2 are provided with flow blocking parts, a gap is formed between the air distribution seat air flow divider 12 and the inner ring fire cover air flow divider 24 for air flow to pass through.

[0039] To further enhance the airflow separation effect, the number of airflow dividers 12 on the airflow seat and the number of airflow dividers 24 on the inner ring fire cover are the same, and they are staggered along the circumference of the inner ring fire cover 2. The combustible gas and air mixture flowing upward between the two airflow dividers 12 on the airflow seat is separated by the inner ring fire cover airflow divider 24 into two streams, each entering two different inner ring fire cover outlet cavities 25, which can more effectively reduce the flow rate of the combustible gas and air mixture.

[0040] To prevent spilled liquid and food residue from the pot from seeping into the flame hole 23, the edge of the top cover 21 of the inner ring flame cover 2 protrudes from the side wall 22. The flame hole 23 is located below the edge of the top cover 21. Spilled liquid and food residue from the pot will flow along the edge of the top cover 21 and drip onto the burner surface, rather than flowing along the side wall 22 into the flame hole 23, preventing clogging of the flame hole 23. Furthermore, the edge of the top cover 21 prevents the flame from burning upward too quickly, helping to prevent flame lift.

[0041] Based on the above structure, Figures 1 to 4 As shown, when the flow block is installed on the air distributor 1, one end of the plate-shaped air distributor 12 is connected to the inner ring air outlet 11. The air distributor 12 includes a first side and a second side that are perpendicular to each other. The first side is arranged radially along the air distributor 1, and the angle between the second side and the axis of the air distributor 1 is less than a set value. In other words, the plate-shaped air distributor 12 is arranged vertically along the axis of the air distributor 1 or forms an acute angle with the axis of the air distributor 1.

[0042] The specific shape of the airflow separator 12 of the air separation seat is not limited, as long as it can play the role of separating the airflow. In this embodiment, along the radial outward direction of the air separation seat 1, the top edge of the airflow separator 12 of the air separation seat gradually rises. Figure 4 As shown, the airflow divider 12 of the air distributor seat is in the shape of a right triangle. Its long side is attached to the top surface of the air distributor seat 1 and extends radially along the air distributor seat 1. Its short side extends axially from the top surface of the air distributor seat 1, and its hypotenuse is connected between the vertex of the short side and the edge of the inner ring air outlet 11. That is, along the axis of the air distributor seat 1, all the airflow dividers 12 of the air distributor seat together form a gradually expanding air outlet space.

[0043] In order to more effectively disrupt the airflow, the top edges of two adjacent air dividers 12 are at different heights. The airflow can pass over the shorter air divider 12 and then be blocked by the taller air divider 12, preventing the airflow from quickly passing over all the air dividers 12.

[0044] In this embodiment, the top edges of all the air seat air flow dividers 12 are arranged in a staggered manner, and the air flow at any position cannot quickly pass through all the air seat air flow dividers 12, and will be blocked by the high air seat air flow dividers 12, thereby reducing the flow rate.

[0045] like Figure 1 、 Figure 2 and Figure 5 As shown, when the flow blocking portion is set on the inner ring fire cover 2, the inner ring fire cover 2 also includes a gas collecting cylinder 26. One end of the gas collecting cylinder 26 is connected to the center of the top cover 21, and the other end forms an opening. The gas collecting cylinder 26 and the top cover 21 form a gas collecting cavity 27. After installation, the edge of the other end of the gas collecting cylinder 26 is aligned with the inner ring gas outlet 11 (as shown in FIG. Figure 2 and Figure 3 A certain distance is left between the edges of the inner ring (as shown) to allow air flow to pass between the air collecting cylinder 26 and the inner ring air outlet 11.

[0046] The gas collecting cylinder 26 helps to block the air flow and reduce the flow rate. Specifically, the ... Figure 4 The directly rising airflow (as shown) rushes into the plenum chamber 27. This chamber has only one opening at the bottom. This airflow cannot escape from elsewhere and can only accumulate in the chamber or flow from the bottom opening of the chamber 27 to the inner ring fire cover outlet chamber 25, thereby extending the gas flow distance. Regardless of whether the airflow leaves the chamber 27, the gas velocity is reduced, preventing flame lift and ensuring more stable combustion.

[0047] One end of the inner ring fire cover airflow divider 24 is connected to the outer wall of the gas collecting cylinder 26, and the other end is connected to the inner wall of the side wall 22. All inner ring fire cover airflow dividers 24 are radially distributed relative to the center of the gas collecting cylinder 26. The mixture of combustible gas and air can only flow along the extension direction of the inner ring fire cover airflow divider 24 to the fire hole 23, providing sufficient fuel for flame combustion and preventing the flame from being extinguished.

[0048] On the basis of the above structure, the gas collecting cylinder 26 is aligned with the inner ring gas outlet 11, and the gas is discharged from the inner ring gas outlet 11 without passing through the gas separation seat gas separation cavity 13 (such as Figure 4 As shown in the figure, all the directly rising airflow will rush into the gas collecting cavity 27, preventing these airflows from directly entering the inner ring fire cover air outlet cavity 25, effectively reducing the gas flow.

[0049] like Figures 1 to 5 As shown, when the gas stove is working, the mixture of combustible gas and air rises from the inner ring mixing chamber 32 of the burner 3 to the inner ring air outlet 11 of the gas dividing seat 1, and the gas dividing seat air flow separator 12 divides the mixture of combustible gas and air into multiple air flows. The separated mixture of combustible gas and air in the gas dividing seat gas dividing chamber 13 rises to the inner ring fire cover air outlet chamber 25, flows along the inner ring fire cover air outlet chamber 25 to the fire hole 23, and the mixture of combustible gas and air is ejected from the fire hole 23 and then burns.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A flame-stabilizing burner, characterized in that: include: An air distributor seat (1) is provided with an inner ring air outlet (11); The inner ring fire cover (2) comprises a top cover (21) and a side wall (22) connected to each other, wherein at least two fire holes (23) are formed on the side wall (22) along the circumferential direction; and A flow blocking portion comprising at least two airflow dividers arranged at intervals, wherein the flow blocking portion is arranged on the air separation seat (1) and / or the inner ring fire cover (2); When the flow-blocking portion is arranged on the air-distributing seat (1), the air-distributing seat air-distributing cavity (13) between two adjacent air-distributing seat air-flow separators (12) is connected to the inner-ring air outlet (11); when the flow-blocking portion is arranged on the inner-ring fire cover (2), an inner-ring fire cover air-flow separator (24) is formed between two adjacent inner-ring fire cover air-flow separators (24).

2. The flame-stabilizing burner according to claim 1, characterized in that: When the flow-blocking portion is arranged on the inner ring fire cover (2), the inner ring fire cover (2) further comprises an air collecting cylinder (26), one end of the air collecting cylinder (26) is connected to the top cover (21), the air collecting cylinder (26) and the top cover (21) form an air collecting cavity (27), one end of the inner ring fire cover airflow divider (24) is connected to the outer wall surface of the air collecting cylinder (26), and the other end of the inner ring fire cover airflow divider (24) is connected to the inner wall surface of the side wall (22).

3. The flame-stabilizing burner according to claim 2, characterized in that: The gas collecting cylinder (26) is aligned with the inner ring gas outlet (11).

4. The flame-stabilizing burner according to claim 1, characterized in that: When the flow-blocking portion is arranged on the air separation seat (1), one end of the plate-shaped air flow separator (12) of the air separation seat is connected to the inner ring air outlet (11), and the first edge of the air flow separator (12) of the air separation seat is arranged along the radial direction of the air separation seat (1), and the angle between the second edge perpendicular to the first edge and the axis of the air separation seat (1) is less than a set value.

5. The flame-stabilizing burner according to claim 4, characterized in that: Along the radially outward direction of the gas separation seat (1), the top edge of the gas separation seat airflow separator (12) gradually rises.

6. The flame-stabilizing burner according to claim 5, characterized in that: The top edges of two adjacent air separators (12) of the air separator seat have different heights; or, The top edges of all the air separation seats and air flow dividers (12) are arranged in a staggered manner.

7. The flame-stabilizing burner according to any one of claims 1 to 6, characterized in that: When the flow blocking portion is provided on both the gas separation seat (1) and the inner ring fire cover (2), a gap is formed between the gas separation seat airflow divider (12) and the inner ring fire cover airflow divider (24).

8. The flame-stabilizing burner according to claim 7, characterized in that: The number of the air flow dividers (12) of the air separation seat and the air flow dividers (24) of the inner ring fire cover is the same, and along the circumference of the inner ring fire cover (2), the air flow dividers (12) of the air separation seat and the air flow dividers (24) of the inner ring fire cover are arranged alternately.

9. The flame-stabilizing burner according to any one of claims 1 to 6, characterized in that: The edge of the top cover (21) of the inner ring fire cover (2) protrudes from the side wall (22).

10. A gas stove, characterized in that: The method comprises the flame-stabilizing burner according to any one of claims 1 to 9.

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