burner

Abstract

The burner provided by the present invention includes a shell having a receiving cavity, an ignition device, and a main fire burner received in the receiving cavity, the shell being provided with an air inlet and a first main fire air inlet spaced apart from each other; air enters the ignition device and the main fire burner through the air inlet; a main fire combustion chamber is provided in the main fire burner, and the first main fire air inlet is connected to the main fire combustion chamber; the ignition device is received in the receiving cavity, the ignition device is provided with an ignition combustion chamber connected to the main fire combustion chamber, the shell is further provided with a first ignition air inlet, and the first ignition air inlet is connected to the ignition combustion chamber. In the burner provided by the present invention, the ignition device is built into the shell, especially arranged inside the main fire burner, so that the ignition combustion chamber is placed in the main fire combustion chamber of the main fire burner, and the gas in the main fire burner can be quickly ignited, effectively shortening the ignition time of the burner.

Description

Technical field

[0001] The present invention relates to the technical field of gas equipment, and in particular to a burner. [Background Technology]

[0002] In the catering industry, such as cafeterias and restaurants, commercial gas stoves are widely used due to their high power, rapid heating, and quick tempering. The most important component of a commercial gas stove is the burner, which directly heats the cookware. Existing burners typically consist of a main burner and an ignition device for igniting the gas in the main burner.

[0003] In the related art, the ignition device is usually arranged on the side of the main fire burner. In the burner with such a side ignition device, the ignition device only ignites the gas in the combustion chamber of the main fire burner through the side opening. It takes a long time for the main fire burner to be ignited and it cannot be ignited quickly. In addition, when water flows onto the burner during cooking, the water can easily flow into the ignition device through the side opening, causing the fire in the ignition device to be extinguished and the gas stove to stop working. The water cannot be discharged, causing the ignition device to be unable to ignite normally again. In addition, during the cooking process, debris will enter the ignition device, causing it to be blocked and unable to be cleaned, affecting the service life of the burner.

[0004] Therefore, it is necessary to provide a new burner to solve the above problems. [Summary of the invention]

[0005] In order to solve the above-mentioned shortcomings and deficiencies, an object of the present invention is to provide a burner that can be ignited quickly and has good waterproof performance.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a burner, which includes a shell having a receiving cavity, an ignition device and a main fire burner received in the receiving cavity, the shell is provided with an air inlet and a first main fire air inlet arranged at intervals; air enters the ignition device and the main fire burner through the air inlet; a main fire combustion chamber is provided in the main fire burner, and the first main fire air inlet is connected to the main fire combustion chamber; the ignition device is received in the receiving cavity, the ignition device is provided with an ignition combustion chamber connected to the main fire combustion chamber, and the shell is also provided with a first ignition air inlet, and the first ignition air inlet is connected to the ignition combustion chamber.

[0007] Preferably, the ignition device includes a fire rod accommodated in the accommodating cavity and a first shell spaced apart on the outside of the fire rod, the first shell and the fire rod are spaced apart to form an ignition channel, and the first shell is provided with a first ignition hole connected to the first ignition air inlet.

[0008] Preferably, the spark rod includes an ignition end arranged in the ignition combustion chamber, and the first shell is provided with a second ignition hole at one end close to the ignition end and a third ignition hole at one end away from the ignition end, and the second ignition hole connects the ignition channel with the ignition combustion chamber.

[0009] Preferably, the ignition device further comprises a spark cap covered on the spark rod, the spark cap is provided with a first fire outlet hole, and the ignition combustion chamber is connected to the main fire combustion chamber through the first fire outlet hole.

[0010] Preferably, the main fire burner includes a first cover body surrounding the outside of the first shell, the first cover body divides the accommodating cavity into the main fire combustion chamber accommodating the fire cap and an air inlet cavity connected to the air inlet, and a first combustion hole is provided on the first cover body, and the air inlet cavity is connected to the main fire combustion chamber through the first combustion hole; the end of the first shell away from the ignition end extends into the air inlet cavity, and the air inlet cavity is connected to the ignition channel through the third ignition hole.

[0011] Preferably, the burner also includes a second shell that is spaced apart and sleeved on the outside of the first shell, the first cover is fixed around the outside of the second shell, the first shell and the second shell are spaced to form an air intake channel, and an isolation member is also provided between the first shell and the second shell, the isolation member divides the air intake channel into a first air intake channel and a second air intake channel, the second shell is provided with a second main fire air inlet connected to the first air intake channel and a second ignition air inlet connected to the second air intake channel, the first main fire air inlet is connected to the second main fire air inlet, the first ignition air inlet is connected to the second ignition air inlet, the first ignition hole on the first shell connects the second air intake channel to the ignition channel, and the second shell is provided with a second combustion hole connecting the first intake channel to the main fire combustion chamber.

[0012] Preferably, the main fire burner further includes a first air inlet pipe, which connects the first main fire air inlet and the second main fire air inlet; the ignition device further includes a second air inlet pipe, which connects the first ignition air inlet and the second ignition air inlet.

[0013] Preferably, the main fire burner also includes a second cover body spaced apart above the first cover body, the main fire combustion chamber includes a first premixing chamber formed by the first cover body, the second cover body and the outer shell, and a second premixing chamber formed by the second cover body and the outer shell, the second combustion hole connects the first air inlet channel with the first premixing chamber, and the second cover body is provided with a third combustion hole connecting the first premixing chamber and the second premixing chamber.

[0014] Preferably, the second cover body includes a first bottom wall fixed around the end of the second shell close to the ignition end, a first side wall bent and extended from the edge of the first bottom, and a first top wall extending from the first side wall to be fixed to the outer shell, the spark cap overlaps the first side wall and is surrounded by the first bottom wall and the first side wall to form the ignition combustion chamber, and the third combustion hole is arranged on the first top wall.

[0015] Preferably, the main fire burner also includes a third cover body fixed to the first side wall and arranged on the outside of the fire cap, the third cover body divides the second premixing chamber into a second premixing outer chamber and a second premixing inner chamber connected to the first premixing chamber through the third combustion hole, and the third cover body is provided with a fourth combustion hole, the second premixing inner chamber is connected to the second premixing outer chamber through the fourth combustion hole, and the fire cap is accommodated in the second premixing inner chamber.

[0016] Preferably, a drainage hole is provided on the first bottom wall, and the drainage hole connects the ignition combustion chamber with the first premixing chamber.

[0017] Preferably, the ignition device also includes a third shell accommodated in the ignition combustion chamber and covered on top of the first shell, the ignition combustion chamber includes a first ignition premixing chamber formed by the third shell and the first shell, and a second ignition premixing chamber formed by the third shell, the second cover and the spark cap, the ignition channel is connected with the first ignition premixing chamber through the second ignition hole, and a second ignition outlet hole is provided on the third shell, and the second ignition outlet hole connects the first ignition premixing chamber with the second ignition premixing chamber.

[0018] Compared with the prior art, the ignition device in the burner provided by the present invention is built into the outer shell, especially arranged inside the main fire burner, so that the ignition combustion chamber is placed in the second premixing cavity of the main fire burner. By arranging a fire cap located above the fire rod in the ignition device, the fire cap is provided with a first fire outlet hole that connects the ignition combustion chamber with the second premixing cavity of the main fire burner, the gas in the main fire burner can be quickly ignited, effectively shortening the ignition time of the burner; in addition, the fire cap of the ignition device can not only effectively prevent water from extinguishing the fire in the ignition combustion chamber, significantly improving the waterproof performance of the burner, but also avoid debris clogging the ignition device, thereby ensuring the normal operation of the burner; by arranging a drainage hole on the second cover body of the main fire burner, the water flowing into the burner can flow from the ignition combustion chamber through the drainage hole into the first premixing cavity in turn and then enter the air inlet cavity for discharge, thereby effectively ensuring the normal use of the ignition function of the ignition device.

Brief Description of the Drawings

[0019] Figure 1is a perspective view of a burner in the present invention;

[0020] Figure 2 is an exploded view of the burner of the present invention;

[0021] Figure 3 for Figure 1 Sectional view along line AA;

[0022] Figure 4 for Figure 3 Enlarged view of part B;

[0023] Figure 5 It is a three-dimensional diagram of part of the structure of the burner in the present invention;

[0024] Figure 6 It is a three-dimensional diagram of the ignition device and the second cover body of the burner of the present invention;

[0025] Figure 7 yes Figure 5 Cross-sectional view along CC line;

[0026] Figure 8 yes Figure 6 Cross-sectional view along line DD;

[0027] Figure 9 is a perspective view of the spark cap of the burner of the present invention;

[0028] In the figure: 100-burner; 10-receiving chamber; 1-housing; 11-air inlet; 12-first main fire air inlet; 13-first ignition air inlet; 2-ignition device; 20-ignition combustion chamber; 201-first ignition premixing chamber; 202-second ignition premixing chamber; 21-fire rod; 211-ignition end; 212-electrical connection end; 22-first shell; 221-first ignition hole; 222-second ignition hole; 223-third ignition hole; 23-ignition channel; 24-fire cap; 241-first fire outlet; 242-cap body; 243-cap edge; 244-cap body; 245-handle; 25-second air inlet pipe; 26-third shell; 261-second fire outlet; 3-main fire burner; 30-main fire combustion chamber; 301-first premixing chamber; 302-second premixing chamber; 3021-second premixing outer chamber; 3022-second premixing inner chamber; 31-first cover; 32-air inlet chamber; 33-first air inlet pipe; 34-second cover; 341-third combustion hole; 342-first bottom wall; 343-first side wall; 344-first top wall; 345-drainage hole; 35-third cover; 351-fourth combustion hole; 4-second shell; 41-air inlet channel; 411-first air inlet channel; 412-second air inlet channel; 42-second main fire air inlet; 43-second ignition air inlet; 44-second combustion hole; 5-isolator; 6-fire gathering ring. [Specific implementation method]

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figures 1-9 As shown, the present invention provides a burner 100, which includes a housing 1 having a receiving cavity 10, an ignition device 2 and a main fire burner 3 both received in the receiving cavity 10. Specifically, an ignition combustion chamber 20 is provided in the ignition device 2, and a main fire burner 3 is provided in the main fire burner 3, which is connected to the ignition combustion chamber 20. Furthermore, an air inlet 11, a first main fire air inlet 12, and a first ignition air inlet 13 are provided on the housing 1, which are spaced apart. Specifically, air enters the ignition device 2 and the main fire burner 3 through the air inlet 11. The first main fire air inlet 12 is connected to the main fire combustion chamber 30, and gas enters the main fire combustion chamber 30 through the first main fire air inlet 12. The first ignition air inlet 13 is connected to the ignition combustion chamber 20, and gas enters the ignition combustion chamber 20 through the first ignition air inlet 13.

[0031] like Figure 2-Figure 9As shown, the ignition device 2 includes a fire rod 21 arranged in the ignition combustion chamber 20 and a first shell 22 arranged at intervals on the outside of the fire rod 21, the first shell 22 and the fire rod 21 are spaced apart to form an ignition channel 23, the first shell 22 is connected to the first ignition hole 221 connected to the first ignition air inlet 13, and the gas enters the ignition channel 23 through the first ignition air inlet 13 and the first ignition hole 221 in sequence; further, the fire rod 21 includes an ignition end 211 arranged in the ignition combustion chamber 20, the first shell 22 is provided with a second ignition hole 222 at one end close to the ignition end 211, and a third ignition hole 223 at one end away from the ignition end 211, the second ignition hole 222 is connected to the ignition combustion chamber 20, and the gas enters the ignition combustion chamber 20 through the first ignition air inlet 13, the first ignition hole 221, the ignition channel 23, and the second ignition hole 222 in sequence. In order to ensure that the gas in the ignition combustion chamber 20 is fully burned, air needs to be introduced to premix with the gas in the ignition channel 23. Therefore, the air inlet 11 is connected to the ignition channel 23 through the third ignition hole 223 to allow air to enter the ignition channel 23. Furthermore, the ignition device 2 also includes a spark cap 24 covering the spark rod 21. The spark cap 24 is provided with a first flame outlet hole 241. The ignition combustion chamber 20 is connected to the main fire combustion chamber 30 through the first flame outlet hole 241. It can be understood that the fire rod 21 also includes an electrical connection end 212 away from the ignition end 211, and the electrical connection end 212 is electrically connected to the external circuit, that is, the ignition end 211 extends out of the first shell 22 through the second ignition hole 222 to be accommodated in the ignition combustion chamber 20, and the electrical connection end 212 extends out of the first shell 22 through the third ignition hole 223. Specifically, the outer shell 1 is also provided with an opening for the electrical connection end 212 to extend to the outside world.

[0032] like Figure 2-Figure 9As shown, the main fire burner 3 includes a first cover body 31 surrounding the outside of the first shell 22, the first cover body 31 divides the accommodating cavity 10 into the main fire combustion chamber 30 accommodating the fire cap 24 and the air inlet cavity 32 connected to the air inlet 11, and the first cover body 31 is provided with a first combustion hole 311 connecting the air inlet cavity 32 with the main fire combustion chamber 30; it can be understood that the first cover body 31 is an annular structure, and the first cover body 31 is fixed around the first shell 22 away from the fire rod 21. On the surface; therefore, the end of the first shell 22 close to the ignition end 211 is located in the main fire combustion chamber 30, and the end of the first shell 22 away from the ignition end 211 extends into the air inlet cavity 32, so that the air inlet cavity 32 is connected with the ignition channel 23 through the third ignition hole 223, thereby allowing air to enter the ignition channel 23; it can be clearly seen that the ignition combustion chamber 20 is accommodated in the main fire combustion chamber 30, so that the ignition device 2 can ignite the main fire burner 3 more quickly.

[0033] like Figure 2-Figure 5 As shown, the burner 100 also includes a second shell 4 that is spaced apart and sleeved on the outside of the first shell 22, and the first cover 31 is fixed around the outside of the second shell 4; the first shell 22 and the second shell 4 are spaced apart to form an air intake channel 41, and in order to respectively supply gas to the main fire burner 3 and the ignition device 2, an isolation member 5 is provided between the first shell 22 and the second shell 4, and the isolation member 5 separates the air intake channel 41 into a first air intake channel 411 and a second air intake channel 412, and the second shell 4 is also provided with a second main fire air inlet 42 connected to the first air intake channel 411 and a second ignition air inlet 43 connected to the second air intake channel 412, the first main fire air inlet 12 is connected to the second main fire air inlet 42, the first ignition air inlet 13 is connected to the second ignition air inlet 43, and the first shell 22 The first ignition hole 221 on the housing connects the second air inlet channel 412 with the ignition channel 23 to allow fuel gas to flow into the ignition channel 23. The second housing 4 is provided with a second combustion hole 44 connecting the first air inlet channel 411 with the main fire combustion chamber 30 to allow fuel gas to flow into the main fire burner 3. Furthermore, the main fire burner 3 also includes a first air inlet pipe 33, which connects the first main fire air inlet port 12 and the second main fire air inlet port 42. The ignition device 2 includes a second air inlet pipe 25, which connects the first ignition air inlet port 13 and the second ignition air inlet port 43.

[0034] In order to further evenly mix the gas and air in the main fire burner 3, the main fire burner 3 also includes a second cover body 34 spaced apart above the first cover body 31. The main fire combustion chamber 30 includes a first premixing chamber 301 formed by the first cover body 3, the second cover body 34, and the outer shell 1, and a second premixing chamber 302 formed by the second cover body 34 and the outer shell 1. The second combustion hole 44 connects the first air inlet channel 411 with the first premixing chamber 301. The second cover body 34 is provided with a third combustion hole 341 connecting the first premixing chamber 301 and the second premixing chamber 302. The air in the air inlet chamber 32 enters the first premixing chamber 301 through the first combustion hole 311 on the first cover body 31 for initial mixing with the gas, and then enters the second premixing chamber 302 through the third combustion hole 341 for further mixing.

[0035] The structure of the burner 100 provided by the present invention is further explained below in combination with the specific structure of the second cover body 34. The second cover body 34 includes a first bottom wall 342 fixed around the end of the second shell 4 close to the ignition end 211, a first side wall 343 bent and extended from the edge of the first bottom 342, and a first top wall 344 extending from the first side wall 343 to be fixed to the outer shell 1. The spark cap 24 is overlapped with the first side wall 343 and is surrounded by the first bottom wall 342 and the first side wall 343 to form the ignition combustion chamber 20. The third combustion hole 341 is provided on the first top wall 344.

[0036] The main fire burner 3 also includes a third cover body 35 fixed to the first side wall 343 and arranged on the outside of the fire cap 24. The third cover body 35 separates the second premixing chamber 302 into a second premixing outer chamber 3021 and a second premixing inner chamber 3022 connected to the first premixing chamber 301 through the third combustion hole 341. The third cover body 35 is provided with a fourth combustion hole 351. The second premixing inner chamber 3022 is connected to the second premixing outer chamber 3021 through the fourth combustion hole 351. The fire cap 24 is accommodated in the second premixing inner chamber 3022.

[0037] In summary, for the main fire burner 3, the gas flow path is, in order, the first main fire air inlet 12, the first air inlet pipe 33, the second main fire air inlet 42, the first air inlet channel 411, the second combustion hole 44, the first premixing chamber 301, the third combustion hole 341, the second premixing outer chamber 3021, the fourth combustion hole 351, the second premixing inner chamber 3022, and finally ignited by the fire in the ignition combustion chamber 20 in the second premixing inner chamber 3022. The air in the air inlet chamber 32 enters the first premixing chamber 301 through the first combustion hole 311 on the first cover body 31 for the first mixing with the gas, and then passes through the second premixing outer chamber 3021 and the second premixing inner chamber 3022 for the second and third mixing, so that the gas and air are mixed more evenly and burn more fully, effectively improving the gas calorific value utilization rate and exhaust gas cleanliness of the burner 100.

[0038] It can be understood that by adjusting the number, shape and size of the first combustion hole 311, the second combustion hole 44, the third combustion hole 341 and the fourth combustion hole 351, different forms of fire can be achieved, such as area, height, shape and the size of the sound during combustion. The specific design can be based on usage requirements and is not limited here.

[0039] Furthermore, in order to ensure that the gas and air in the ignition device 2 are evenly mixed, the ignition device 2 also includes a third shell 26 accommodated in the ignition combustion chamber 20 and covered on top of the first shell 22. The ignition combustion chamber 20 includes a first ignition premixing chamber 201 formed by the third shell 26 and the first shell 22, and a second ignition premixing chamber 202 formed by the third shell 26, the second cover 34 and the spark cap 24. The ignition channel 23 is connected to the first ignition premixing chamber 201 through the second ignition hole 222. A second ignition hole 261 is provided on the third shell 26, and the second ignition hole 261 connects the first ignition premixing chamber 201 with the second ignition premixing chamber 202. It can be understood that the third shell 26 is also a structure with a middle opening, so that the end of the first shell 22 close to the ignition end 211 extends out of the third shell 26 so that the ignition end 211 is accommodated in the second ignition premixing chamber 202. In this way, two premixings of gas and air can be achieved in the ignition device 2, making it easier for the ignition end 211 to ignite the gas in the second ignition premixing chamber 202; further, it makes it easier for the ignition device 2 to ignite the gas in the second premixing chamber 3022, thereby shortening the ignition time of the ignition device 2 to ignite the main fire burner 3.

[0040] In summary, for the ignition device 2, the gas flow path is, in order, the first ignition air inlet 13, the second air inlet pipe 25, the second ignition air inlet 43, the second air inlet channel 412, the first ignition hole 221, the ignition channel 23, the second ignition hole 222, the first ignition premixing chamber 201, the second ignition hole 262, the second ignition premixing chamber 202, and finally ignited in the second ignition premixing chamber 202. Air passes through the air inlet 11, the air inlet chamber 32, the third ignition hole 223, and enters the ignition channel 23 to mix with the gas.

[0041] In the burner 100 provided by the present invention, the ignition device 2 is built into the main fire burner 3, and the ignition combustion chamber 20 is accommodated in the second premixing cavity 3022 of the main fire burner 3. When the gas is ignited in the ignition combustion chamber 20, the gas in the second premixing cavity 3022 is ignited through the first fire hole 241 on the spark cap 24, thereby realizing normal combustion of the burner 100.

[0042] In the related art, since the ignition device is usually arranged on the outside of the main fire burner, in addition to the main fire burner having a separate air inlet channel, the ignition device also has a separate air channel, which makes the structure of the burner more complicated; and in the burner 100 provided by the present invention, since the ignition device 2 is built into the outer shell 1, air enters the air inlet chamber 32 through the air inlet 11 on the outer shell 1, and the air in the air inlet chamber 32 enters the ignition device 2 through the third ignition hole 223 and enters the main fire burner 3 through the first combustion hole 311. Only by setting up one air inlet channel, air can be provided to the ignition device 2 and the main fire burner 3 at the same time, which simplifies the structure of the burner and reduces the production cost.

[0043] In the ignition device 2, the spark cap 24 is covered above the spark rod 21, especially above the ignition end 211. When water flows into the burner 100, the ignition cap 24 can effectively protect the ignition end 211 from being extinguished by water, thereby improving the waterproof performance of the burner 100; and the spark cap 24 can effectively prevent debris from entering the ignition device 2 during the use of the burner 100, thereby reducing the risk of blockage of the ignition device 2. More preferably, the fire starter cap 24 includes a cap body 242 arranged above the ignition end 211, a cap edge 243 fixed to the second cover body 34, a cap body 244 connecting the cap edge 243 and the cap body 242, and a handle 245 fixed to the cap body 242; wherein, the first fire hole 241 is arranged on the cap body 244. It can be understood that there are several first fire holes 241, and several first fire holes 241 are arranged around the cap body 244; compared with the prior art, after the gas in the ignition combustion chamber 20 is successfully ignited, the fire starter can ignite the gas in the main fire burner 3 through several circumferentially arranged first fire holes 241, thereby shortening the ignition time of the main fire burner 3 and realizing rapid ignition of the burner 100. Moreover, the kindling cap 24 is provided above the ignition end 211, and in particular, the cap body 242 blocks the ignition end 211, effectively protecting the ignition end 211 from being extinguished by water. In this way, the kindling in the ignition combustion chamber 20 keeps burning normally, and after the fire in the main fire burner 3 is extinguished, the gas in the main fire burner 3 continues to be ignited quickly, thereby ensuring the normal operation of the burner 100. Furthermore, the handle 245 facilitates the user to lift the cap body 24 for cleaning.

[0044] In order to allow water entering the burner 100 to be quickly drained, a drainage hole 345 is provided on the first bottom wall 342 of the second cover body 34. The drainage hole connects the ignition combustion chamber 20 with the first premixing chamber 301, and flows into the air inlet chamber 32 through the first combustion hole 311 on the first cover body 31, thereby achieving rapid drainage and ensuring the normal operation of the burner 100.

[0045] The shell 1 is also provided with a fire gathering ring 6, and the shape of the fire can be controlled by adjusting the angle of the fire gathering ring 6.

[0046] Compared with the prior art, the ignition device in the burner provided by the present invention is built into the outer shell, especially arranged inside the main fire burner, so that the ignition combustion chamber is placed in the second premixing cavity of the main fire burner. By arranging a fire cap located above the fire rod in the ignition device, the fire cap is provided with a first fire outlet hole that connects the ignition combustion chamber with the second premixing cavity of the main fire burner, the gas in the main fire burner can be quickly ignited, effectively shortening the ignition time of the burner; in addition, the fire cap of the ignition device can not only effectively prevent water from extinguishing the fire in the ignition combustion chamber, significantly improving the waterproof performance of the burner, but also avoid debris clogging the ignition device, thereby ensuring the normal operation of the burner; by arranging a drainage hole on the second cover body of the main fire burner, the water flowing into the burner can flow from the ignition combustion chamber through the drainage hole into the first premixing cavity in turn and then enter the air inlet cavity for discharge, thereby effectively ensuring the normal use of the ignition device.

[0047] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A burner comprising a housing having a receiving cavity, an ignition device, and a main fire burner received in the receiving cavity, characterized in that: The housing is provided with an air inlet and a first main fire air inlet arranged at intervals; air enters the ignition device and the main fire burner through the air inlet; a main fire combustion chamber is provided in the main fire burner, and the first main fire air inlet is communicated with the main fire combustion chamber; the ignition device is accommodated in the accommodating cavity, the ignition device is provided with an ignition combustion chamber communicated with the main fire combustion chamber, and the housing is further provided with a first ignition air inlet, and the first ignition air inlet is communicated with the ignition combustion chamber; The main fire burner includes a first cover body surrounding the outside of the first shell and a second cover body spaced above the first cover body, the first cover body dividing the receiving chamber into the main fire combustion chamber and the air inlet chamber connected to the air inlet; the main fire combustion chamber includes a first premixing chamber formed by the first cover body, the second cover body and the shell, and a second premixing chamber formed by the second cover body and the shell and connected to the first premixing chamber; the ignition combustion chamber is accommodated in the second premixing chamber; The ignition device includes a spark rod accommodated in the accommodating cavity, a first shell arranged at intervals on the outside of the spark rod, and a spark cap covered on the spark rod, the first shell and the spark rod are spaced to form an ignition channel, the first shell is provided with a first ignition hole connected to the first ignition air inlet; the spark rod includes an ignition end arranged in the ignition combustion chamber, the first shell is provided with a second ignition hole at one end close to the ignition end and a third ignition hole at one end away from the ignition end, the second ignition hole connects the ignition channel with the ignition combustion chamber; the third ignition hole connects the air inlet chamber with the ignition channel; the spark cap is provided with a first fire outlet hole, and the ignition combustion chamber is connected with the second premixing chamber through the first fire outlet hole; The ignition device also includes a third shell accommodated in the ignition combustion chamber and covered on top of the first shell, the ignition combustion chamber includes a first ignition premixing chamber formed by the third shell and the first shell, and a second ignition premixing chamber formed by the third shell, the second cover and the spark cap, the ignition channel is connected with the first ignition premixing chamber through the second ignition hole, the third shell is provided with a second ignition outlet hole, the second ignition outlet hole connects the first ignition premixing chamber with the second ignition premixing chamber, and the ignition end extends out of the third shell so that the ignition end is accommodated in the second premixing chamber.

2. The burner according to claim 1, characterized in that The first cover body is provided with a first combustion hole, and the air inlet cavity is communicated with the main fire combustion chamber through the first combustion hole; and the end of the first shell away from the ignition end extends into the air inlet cavity.

3. The burner according to claim 2, characterized in that The burner also includes a second shell that is spaced apart and sleeved on the outside of the first shell, the first cover is fixed around the outside of the second shell, the first shell and the second shell are spaced to form an air intake channel, and an isolation member is also provided between the first shell and the second shell, the isolation member divides the air intake channel into a first air intake channel and a second air intake channel, the second shell is provided with a second main fire air inlet connected to the first air intake channel and a second ignition air inlet connected to the second air intake channel, the first main fire air inlet is connected to the second main fire air inlet, the first ignition air inlet is connected to the second ignition air inlet, the first ignition hole on the first shell connects the second air intake channel to the ignition channel, and the second shell is provided with a second combustion hole connecting the first air intake channel to the main fire combustion chamber.

4. The burner according to claim 3, characterized in that The main fire burner further includes a first air inlet pipe, which is connected to the first main fire air inlet and the second main fire air inlet; the ignition device further includes a second air inlet pipe, which is connected to the first ignition air inlet and the second ignition air inlet.

5. The burner according to claim 4, characterized in that The second combustion hole connects the first air inlet channel with the first premixing chamber, and the second cover body is provided with a third combustion hole connecting the first premixing chamber and the second premixing chamber.

6. The burner according to claim 5, characterized in that The second cover body includes a first bottom wall fixed around the end of the second shell near the ignition end, a first side wall bent and extended from the edge of the first bottom wall, and a first top wall extending from the first side wall to be fixed to the outer shell. The spark cap overlaps the first side wall and is surrounded by the first bottom wall and the first side wall to form the ignition combustion chamber. The third combustion hole is provided on the first top wall.

7. The burner according to claim 6, characterized in that The main fire burner also includes a third cover body fixed to the first side wall and arranged on the outside of the spark cap, the third cover body divides the second premixing chamber into a second premixing outer chamber and a second premixing inner chamber connected to the first premixing chamber through the third combustion hole, the third cover body is provided with a fourth combustion hole, the second premixing inner chamber is connected to the second premixing outer chamber through the fourth combustion hole, and the spark cap is accommodated in the second premixing inner chamber.

8. The burner according to claim 6, characterized in that A drainage hole is provided on the first bottom wall, and the drainage hole connects the ignition combustion chamber with the first premixing chamber.

Images