Explosion-proof gas distribution disc

Abstract

The explosion-proof air distribution disc is provided with an outer air channel and a first inner air channel, the outer air channel is an annular air channel with an upward opening, the outer air channel is annularly arranged outside the first inner air channel and communicated with the first inner air channel, and a first air inlet hole used for being connected with an external air pipe is formed in the lower wall of the outer air channel. The outer gas channel is configured to be communicated with the inner gas channel and provided with the gas inlet hole used for being connected with the external gas pipe, combustible gas enters the outer gas channel and then enters the inner gas channel through the gas inlet hole, and when the outer ring fire cover is blocked, gas in the outer gas channel flows into the inner gas channel, so that explosion caused by accumulation and reverse flow of the combustible gas in the outer gas channel is avoided, and the use safety is high. Meanwhile, the air inlet holes are formed in the lower wall of the outer air channel, so that the assembly space of the outer air pipe connected with the air inlet holes is sufficient, winding of the outer air pipe is avoided, the air inlet pressure of the outer air channel is large, and the fire outlet effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of stove burners, and in particular to explosion-proof gas distribution plates. Background Technology

[0002] The burner is a crucial component of a stove. Existing burners include a gas distribution plate and a burner cap. The gas distribution plate has an inner and an outer gas channel. The outer gas channel is located around the inner gas channel and is independent of it. The burner cap has an outer ring and an inner ring. The outer ring burner cap covers the upper end of the outer gas channel, and the inner ring burner cap covers the upper end of the inner gas channel. An outer ring flame is formed at the outer gas channel, and an inner ring flame is formed at the inner gas channel. Because the outer and inner gas channels are independent, the leak detection probe only closes the intake valve when the inner ring flame is extinguished. Therefore, when the outer ring burner cap becomes blocked, the combustible gas in the outer gas channel flows back and accumulates, potentially causing an explosion. Utility Model Content

[0003] The purpose of this invention is to provide an explosion-proof gas distribution plate to solve the problem that in existing stove burners, the external and internal gas ducts are independent, and when the outer ring burner cap is blocked, the combustible gas in the external gas duct flows back and accumulates, causing an explosion.

[0004] This utility model is achieved through the following technical solution:

[0005] An explosion-proof air distribution plate has an outer air channel and a first inner air channel. The outer air channel is an annular air channel with an upward opening. The outer air channel is arranged around the first inner air channel and communicates with the first inner air channel. The lower wall of the outer air channel is provided with a first air inlet for connecting to an external air pipe.

[0006] Furthermore, it also has a second internal airway. The first internal airway is an annular airway with its opening facing upwards, and the second internal airway is a cylindrical airway with openings at the top and bottom. The first internal airway is arranged around the second internal airway, and the first internal airway and the second internal airway are independent of each other.

[0007] Furthermore, it also has a second internal airway, which is an annular airway with its opening facing upwards, while the first internal airway is a cylindrical airway with its opening facing upwards. The second internal airway is arranged around the first internal airway and is independent of the first internal airway. The lower wall of the second internal airway is provided with a second air inlet for connecting to an external air pipe.

[0008] Furthermore, it also has a connecting airway, which is located between the outer airway and the first inner airway, and is connected to both the outer airway and the first inner airway respectively.

[0009] Furthermore, the connecting air passage extends radially on the explosion-proof air distribution plate, and the connecting air passage is located on one side of the first air inlet or is arranged radially opposite to the first air inlet on the explosion-proof air distribution plate.

[0010] Furthermore, it includes an inner air ring, an outer air ring, and a connecting arm. The outer air ring is disposed outside the inner air ring, and the connecting arm is disposed between the inner air ring and the outer air ring. The outer air ring has an outer air passage and a first air inlet. The inner air ring has a first inner air passage and a second inner air passage. The connecting arm has a connecting air passage. The inner air ring, the outer air ring, and the connecting arm are integrally formed.

[0011] Furthermore, the outer air ring has a insert ring extending downward from the first air inlet, the insert ring protruding on the side of the outer air ring opposite to the inner air ring, and the connecting air passage is connected to the outer air passage at the portion of the insert ring that protrudes from the outer air ring.

[0012] Furthermore, the upper end of the inner air ring is higher than the upper end of the outer air ring, the outer wall of the upper end of the inner air ring has an inner shoulder, and the outer wall of the upper end of the outer air ring has an outer shoulder.

[0013] Furthermore, a probe is provided on the outer wall of the inner air ring.

[0014] Furthermore, the lower wall of the external air passage is inclined from bottom to top in a direction away from the first air inlet.

[0015] The advantages of this technical solution are that by configuring the external air duct to connect with the internal air duct and having an air inlet for connecting to an external gas pipe, combustible gas first enters the external air duct through the air inlet and then enters the internal air duct. When the outer ring burner cap becomes blocked, the gas in the external air duct flows into the internal air duct, thus preventing the accumulation of combustible gas in the external air duct and backflow that could cause an explosion, resulting in high safety. Simultaneously, because the air inlet is located on the lower wall of the external air duct, there is ample space for the installation of the external gas pipe connected to the air inlet, preventing the external gas pipe from becoming tangled, resulting in high air pressure in the external air duct and excellent ignition effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 It is a three-dimensional explosion-proof gas distribution plate disclosed in Example 1. Figure 1 ;

[0019] Figure 2It is a three-dimensional explosion-proof gas distribution plate disclosed in Example 1. Figure 2 ;

[0020] Figure 3 This is a cross-sectional view of the explosion-proof gas distribution plate disclosed in Embodiment 1;

[0021] Figure 4 This is a top view of the explosion-proof gas distribution plate disclosed in Embodiment 1;

[0022] Figure 5 This is a three-dimensional explosion-proof gas distribution plate disclosed in Example 2. Figure 1 ;

[0023] Figure 6 This is a three-dimensional explosion-proof gas distribution plate disclosed in Example 2. Figure 2 ;

[0024] Figure 7 This is a cross-sectional view of the explosion-proof gas distribution plate disclosed in Embodiment 2;

[0025] Figure 8 This is a top view of the explosion-proof gas distribution plate disclosed in Embodiment 2. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: As Figure 1-4 As shown, the explosion-proof gas distribution plate has an outer gas channel 1 and a first inner gas channel 2. The outer gas channel 1 and the first inner gas channel 2 are annular gas channels with upward openings. The outer gas channel 1 is arranged around the first inner gas channel 2 and communicates with the first inner gas channel 2. The lower wall of the outer gas channel 1 is provided with a first air inlet 3 for connecting to an external gas pipe. The explosion-proof gas distribution plate is used in conjunction with an inner flame cap and an outer flame cap. The inner flame cap is placed on the upper end of the first inner gas channel 2, and the outer flame cap is placed on the upper end of the outer gas channel 1. Combustible gas enters the outer gas channel 1 through the first air inlet 3 and then enters the first inner gas channel 2. An outer ring flame is formed at the outer gas channel 1, and an inner ring flame is formed at the first inner gas channel 2.

[0028] This embodiment provides an explosion-proof gas distribution plate to solve the problem of existing stove burners where the external and internal gas ducts are independent. When the outer burner cap becomes blocked, combustible gas accumulates and can cause an explosion due to backflow. This is achieved by configuring the external gas duct 1 to connect with the first internal gas duct 2 and having a first air inlet 3 for connecting to an external gas pipe. Combustible gas enters the external gas duct 1 through the first air inlet 3 and then enters the first internal gas duct 2. When the outer burner cap becomes blocked, the gas in the external gas duct 1 flows into the first internal gas duct 2, thus preventing the accumulation and backflow of combustible gas in the external gas duct 1, which could lead to an explosion. This ensures high safety. Furthermore, since the first air inlet 3 is located on the lower wall of the external gas duct 1, there is ample space for the external gas pipe connected to it, preventing entanglement and resulting in high intake pressure in the external gas duct 1 and excellent flame output.

[0029] In this embodiment of the invention, the explosion-proof gas distribution plate also has a second inner gas channel 4, which is a cylindrical gas channel with openings at the top and bottom. A first inner gas channel 2 is arranged around the second inner gas channel 4, and the first inner gas channel 2 and the second inner gas channel 4 are independent of each other. The lower opening of the second inner gas channel 4 is connected to an external gas pipe, and a central flame is formed at the second inner gas channel 4. Because the first inner gas channel 2 is arranged around the second inner gas channel 4, when the second inner gas channel 4 is ventilated for combustion, the first inner gas channel 2 can effectively guide the central flame, preventing the central flame from leaving the core and ensuring complete combustion of the central flame.

[0030] In this embodiment of the invention, the lower wall of the outer air passage 1 is inclined from bottom to top in a direction away from the first air inlet 3. This arrangement, by configuring the lower wall of the outer air passage 1 to be inclined from bottom to top in a direction away from the first air inlet 3, ensures a uniform outer flame.

[0031] In this embodiment of the invention, the explosion-proof gas distribution plate also has a connecting gas channel 5, which is located between the outer gas channel 1 and the first inner gas channel 2, and is connected to both the outer gas channel 1 and the first inner gas channel 2. This arrangement, by configuring the outer gas channel 1 and the first inner gas channel 2 to be connected via the connecting gas channel 5, ensures that the first inner gas channel 2 can effectively exhaust gas when the outer gas channel 1 is blocked, preventing the accumulation and backflow of combustible gas that could lead to an explosion.

[0032] In this embodiment of the invention, the connecting air passage 5 extends radially in the explosion-proof air distribution plate and is located on one side of the first air inlet 3. This arrangement, by configuring the connecting air passage 5 to extend radially in the first inner air passage 2 and be located on one side of the first air inlet 3, makes the explosion-proof air distribution plate structure simple and compact.

[0033] In other embodiments, the connecting air passage 5 and the first air inlet 3 are arranged radially opposite to each other on the explosion-proof air distribution plate.

[0034] In this embodiment of the invention, the explosion-proof gas distribution plate includes an inner gas ring 6, an outer gas ring 7, and a connecting arm 8. The outer gas ring 7 is arranged around the inner gas ring 6, and the connecting arm 8 is disposed between the inner gas ring 6 and the outer gas ring 7. The outer gas ring 7 has an outer air passage 1 and a first air inlet 3. The inner gas ring 6 has a first inner air passage 2 and a second inner air passage 4. The connecting arm 8 has a connecting air passage 5. The inner gas ring 6, the outer gas ring 7, and the connecting arm 8 are integrally formed. By configuring the explosion-proof gas distribution plate as an integrally formed inner gas ring 6, outer gas ring 7, and connecting arm 8, the explosion-proof gas distribution plate has a simple and compact structure with good structural strength.

[0035] In this embodiment of the invention, the outer air ring 7 has a retaining ring 9 extending downward from the first air inlet 3, the retaining ring 9 protruding on the side of the outer air ring 7 opposite to the inner air ring 6. Because the retaining ring 9 protrudes on the side of the outer air ring 7 opposite to the inner air ring 6, the diameter of the first air inlet 3 is larger than the radial width of the outer air ring 7, thus making the air intake effect of the first air inlet 3 better.

[0036] In this embodiment of the invention, the portion of the connecting air passage 5 that protrudes from the outer air ring 7 of the insert ring 9 is connected to the outer air passage 1. Because the portion of the connecting arm 8 that protrudes from the outer air ring 7 of the insert ring 9 is connected to the outer air passage 1, the explosion-proof air distribution plate has a simple and compact structure.

[0037] In this embodiment of the invention, the upper end of the inner gas ring 6 is higher than the upper end of the outer gas ring 7. This arrangement, by configuring the upper end of the inner gas ring 6 to be higher than the upper end of the outer gas ring 7, facilitates the assembly of the inner flame cap.

[0038] In this embodiment of the invention, an inner shoulder 10 is formed on the upper outer wall of the inner gas ring 6, and an outer shoulder 11 is formed on the upper outer wall of the outer gas ring 7. The above arrangement, by configuring the inner shoulder 10 on the upper outer wall of the inner gas ring 6 and the outer shoulder 11 on the upper outer wall of the outer gas ring 7, makes the inner / outer burner cap assembly stable.

[0039] In this embodiment of the invention, a detection needle 12 is provided on the outer wall of the inner gas ring 6. The detection needle 12 is used to detect whether the inner ring flame is extinguished. When the inner ring flame is extinguished, the detection needle 12 closes the air intake valve, thereby improving safety.

[0040] Example 2: Figure 5-8As shown, the difference between this embodiment and Embodiment 1 is that the second inner gas channel 4 is an annular gas channel with an upward opening, while the first inner gas channel 2 is a cylindrical gas channel with an upward opening. The second inner gas channel 4 is arranged around the first inner gas channel 2 and is independent of the first inner gas channel 2. The lower wall of the second inner gas channel 4 is provided with a second air inlet 401 for connecting to an external gas pipe. In Embodiment 2, the explosion-proof gas distribution plate is used in conjunction with the inner flame cap and the outer flame cap. The inner flame cap is placed on the upper end of the second inner gas channel 4, and the outer flame cap is placed on the upper end of the outer gas channel 1. The combustible gas enters the outer gas channel 1 through the first air inlet 3 and then enters the first inner gas channel 2. An outer ring flame is formed at the outer gas channel 1, an inner ring flame is formed at the second inner gas channel 4, and a central flame is formed at the first inner gas channel 2.

[0041] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered as protected by this utility model.

Claims

1. An explosion-proof gas distribution plate, characterized in that, It has an external airway and a first internal airway. The external airway is an annular airway with an upward opening. The external airway is arranged around the first internal airway and communicates with the first internal airway. The lower wall of the external airway is provided with a first air inlet for connection with an external air pipe.

2. The explosion-proof gas distribution plate according to claim 1, characterized in that, It also has a second internal airway. The first internal airway is an annular airway with its opening facing upwards, and the second internal airway is a cylindrical airway with its openings at the top and bottom. The first internal airway is arranged around the second internal airway, and the first internal airway and the second internal airway are independent of each other.

3. The explosion-proof gas distribution plate according to claim 1, characterized in that, It also has a second internal airway, which is an annular airway with its opening facing upwards. The first internal airway is a cylindrical airway with its opening facing upwards. The second internal airway is arranged around the first internal airway and is independent of the first internal airway. The lower wall of the second internal airway is provided with a second air inlet for connecting to an external air pipe.

4. The explosion-proof gas distribution plate according to claim 2 or 3, characterized in that, It also has a connecting airway, which is located between the outer airway and the first inner airway, and is connected to both the outer airway and the first inner airway respectively.

5. The explosion-proof gas distribution plate according to claim 4, characterized in that, The connecting air passage extends radially on the explosion-proof air distribution plate, and the connecting air passage is located on one side of the first air inlet or is arranged opposite to the first air inlet on the explosion-proof air distribution plate radially.

6. The explosion-proof gas distribution plate according to claim 4, characterized in that, It includes an inner air ring, an outer air ring, and a connecting arm. The outer air ring is disposed outside the inner air ring, and the connecting arm is disposed between the inner air ring and the outer air ring. The outer air ring has an outer air passage and a first air inlet. The inner air ring has a first inner air passage and a second inner air passage. The connecting arm has a connecting air passage. The inner air ring, the outer air ring, and the connecting arm are integrally formed.

7. The explosion-proof gas distribution plate according to claim 6, characterized in that, The outer air ring has a insert ring extending downward from the first air inlet. The insert ring protrudes from the side of the outer air ring opposite to the inner air ring. The connecting air passage is connected to the outer air passage at the portion of the insert ring that protrudes from the outer air ring.

8. The explosion-proof gas distribution plate according to claim 6, characterized in that, The upper end of the inner air ring is higher than the upper end of the outer air ring. An inner shoulder is formed on the outer wall of the upper end of the inner air ring, and an outer shoulder is formed on the outer wall of the upper end of the outer air ring.

9. The explosion-proof gas distribution plate according to claim 6, characterized in that, The outer wall of the inner air ring is equipped with a probe.

10. The explosion-proof gas distribution plate according to claim 1, characterized in that, The lower wall of the external air passage slopes upwards from the bottom towards the direction away from the first air inlet.

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