Combustor and combustion control method using the same

Abstract

This invention discloses a burner and a combustion control method using the same, relating to the field of cooktops. The burner includes an injector tube and an ignition device. The injector tube is used to draw in fluid to form a negative pressure zone outside the injector inlet. The burner also has an ignition channel, with its ignition inlet connected to the negative pressure zone and its ignition outlet connected to the combustion working surface of the burner. The ignition part of the ignition device continuously outputs sparks and oxidizer. The ignition part is located within the negative pressure zone, allowing the oxidizer to be drawn into the injector tube through the negative pressure zone. The ignition part is located within the projection area of ​​the ignition inlet along the flame rising direction. Integrating the generation of sparks and oxidizer into the ignition device simplifies the burner structure; facilitates the directional drawing of oxidizer into the injector tube for mixing with fuel gas and primary air; the spark output by the ignition part is directionally guided to the combustion working surface to avoid backfire; and a small amount of evaporating oxidizer enables rapid ignition and immediate combustion.

Description

Technical Field

[0001] This invention relates to the field of cooktops, and particularly to a burner and a combustion control method using the same. Background Technology

[0002] Household gas stove burners, especially top-intake burners, widely employ an injector tube structure to premix the gas and primary air. The working principle involves using a high-speed gas jet ejected from the nozzle to create a localized negative pressure at the injector tube's inlet. Through the Venturi effect, surrounding air is drawn into the tube, mixing with the gas and primary air to form a combustible mixture, which is then ejected from the burner cap's flame holes and ignited by a spark needle. However, such burners commonly suffer from incomplete combustion.

[0003] To address the aforementioned issues, an ozone generator could be added to the burner to aid combustion. However, if ozone is released into the surrounding environment, its distinctive pungent odor severely impacts the user experience, and high concentrations of ozone pose a health risk to the human respiratory system. Furthermore, this solution requires the installation of a corresponding gas ducting system and control components, which complicates the overall structure of the burner. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of incomplete combustion that is common in burners in the prior art, and to provide a burner and a combustion control method using the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A burner includes an ejector tube and an ignition device, the ejector tube being used to draw in fluid to create a negative pressure zone outside the ejector inlet of the ejector tube;

[0007] The burner also has an ignition channel, the ignition inlet of which is connected to the negative pressure zone, and the ignition outlet of which is connected to the combustion working surface of the burner.

[0008] The ignition part of the ignition device can continuously output sparks and combustion accelerator;

[0009] The ignition unit is located within the negative pressure zone, and enables the combustion accelerator to be drawn into the ejector tube through the negative pressure zone.

[0010] The ignition unit is located within the projection area of ​​the ignition inlet along the upward direction of the flame.

[0011] In this technical solution, the burner integrates the generation of spark and oxidizer into the ignition device, resulting in a simplified burner structure. The ignition section is located in a negative pressure zone outside the injector inlet, facilitating the directional intake of the oxidizer into the injector tube for mixing with the combustion gas and primary air. This reduces oxidizer escape, improves combustion efficiency, and minimizes impact on the injector tube structure. The spark output from the ignition section naturally enters the ignition inlet and is then directionally guided to the combustion surface via the ignition channel to prevent backfire. Simultaneously, any small amount of escaped oxidizer can also reach the combustion surface along the ignition channel, achieving rapid ignition and immediate combustion support. These features collectively enhance the burner's combustion completeness.

[0012] Preferably, the ignition device includes an electric flame device;

[0013] Oxygen is present around the ignition device, and the combustion aid is a product of the ionization of oxygen by the ignition device.

[0014] In this technical solution, the above-mentioned setup utilizes the same ionization process to simultaneously generate sparks and combustion aids, eliminating the need for additional gas delivery pipelines or supply materials, thus further simplifying the burner's structure.

[0015] Preferably, the electric flame device is a plasma discharge device, an arc discharge device, or a dielectric barrier discharge device; and / or,

[0016] The combustion accelerant includes ozone.

[0017] In this technical solution, the electric flame device is configured as a plasma discharge device, which simultaneously generates high-temperature sparks and a large number of active substances, including ozone, reactive oxygen atoms, and free radicals, as combustion accelerants during gas discharge. It boasts high discharge efficiency and a large yield of active substances, providing a sufficient amount of combustion accelerant.

[0018] By setting the electric flame device as an arc discharge device, a continuous and stable high-temperature electric arc is formed between the electrodes, resulting in a high ignition success rate. Furthermore, during the discharge process, air is ionized to produce ozone, which serves as a combustion aid. The structure is simple and highly reliable.

[0019] The electric flame device is configured as a dielectric barrier discharge device, consisting of two electrodes and at least one insulating dielectric layer. When a sufficiently high AC high voltage is applied between the electrodes, the gas in the gas gap is broken down to form a discharge, uniformly generating sparks and reactive substances such as ozone.

[0020] By incorporating ozone as a combustion accelerant, the ozone rapidly decomposes at high temperatures during combustion to produce active oxygen atoms, significantly accelerating the combustion chain reaction, increasing flame temperature, reducing emissions of carbon monoxide and unburned hydrocarbons, and improving combustion thermal efficiency. Simultaneously, the burner's structure allows ozone to be decomposed at high temperatures in the ignition channel and combustion working surface, preventing its release into the environment and eliminating its irritating odor and health risks.

[0021] Preferably, the burner further includes a nozzle for injecting gas into the ejector inlet;

[0022] The ignition point is not in the gas injection direction of the nozzle.

[0023] In this technical solution, the above-mentioned settings prevent high-speed gas jets from directly impacting the ignition section, thereby improving the stability of the spark used for ignition; at the same time, they reduce the deposition of impurities in the gas on the surface of the ignition section, extending the service life of the ignition device.

[0024] Preferably, the ignition channel is arranged along the upward direction of the flame.

[0025] In this technical solution, the above-mentioned settings are designed to follow the natural trend of the spark output from the ignition section and the upward movement of the gas in the ignition channel due to the decrease in density caused by heating. This helps to maintain the positive airflow direction from the ignition inlet to the ignition outlet in the ignition channel, avoids backflow of flame or airflow, and further improves the safety of the burner.

[0026] Preferably, the combustion working surface includes an inner ring combustion surface and an outer ring combustion surface;

[0027] The combustion working surface is also provided with a flame transfer groove, which is used to transfer the flame between the inner ring combustion surface and the outer ring combustion surface.

[0028] In this technical solution, by setting up the above-mentioned ignition outlets only at the inner or outer ring combustion surface, ignition of the entire combustion working surface can be achieved, which is beneficial for the flexible arrangement of the ignition device in the negative pressure zone.

[0029] Preferably, the cross-sectional area of ​​the ignition channel is larger than the cross-sectional area of ​​the flame hole on the combustion working surface; and / or,

[0030] The burner also includes a flow guide for guiding the combustion aid to the injection inlet.

[0031] In this technical solution, by setting the cross-sectional area of ​​the ignition channel to be larger than the cross-sectional area of ​​the flame holes on the combustion working surface, the ignition success rate is improved, and it is easier to ignite multiple surrounding flame holes simultaneously. At the same time, the larger ignition channel also reduces the impact of sparks on the intensity of the ignition channel and reduces the possibility of blockage, further improving the service life of the burner.

[0032] The burner also includes a flow guide, which guides the combustion improver to the injection inlet, allowing the combustion improver to be introduced into the injection inlet more concentratedly, further reducing the escape of the combustion improver, improving utilization efficiency, and enhancing the combustion improvement effect.

[0033] Preferably, the burner further includes a control unit and an airflow sensor, the airflow sensor being used to detect the state of the gas in the injector tube, and the airflow sensor being electrically connected to the control unit and the ignition device.

[0034] In this technical solution, the above settings enable the monitoring of safety risks caused by misoperation or air-to-air discharge.

[0035] A combustion control method employing a burner as described above;

[0036] The steps of the combustion control method include:

[0037] S1. Switch the ignition device to the on state, and the ignition part generates the spark and the combustion accelerator;

[0038] S2. The ejector tube draws in the combustion gas, air and the combustion accelerator through the ejector inlet to form a mixed gas.

[0039] S3. The mixed gas is ejected from the flame hole of the combustion working surface and ignited by the spark.

[0040] In this technical solution, the combustion control method improves the combustion efficiency of the burner. It facilitates the directional intake of the oxidizer into the injector tube, where it mixes with the fuel gas and primary air, reducing oxidizer escape and achieving a better combustion-supporting effect, while also minimizing the impact on the injector tube structure. The spark output from the ignition section naturally enters the ignition inlet and is then directionally guided to the combustion surface via the ignition channel to avoid backfire. Simultaneously, any small amount of escaped oxidizer can also reach the combustion surface along the ignition channel, achieving rapid ignition and immediate combustion support.

[0041] Preferably, the burner further includes a control unit and an airflow sensor, wherein the airflow sensor is electrically connected to the control unit and the ignition device;

[0042] The combustion control method further includes:

[0043] S4. Use the airflow sensor to detect the state of the gas in the ejector tube;

[0044] When the airflow sensor detects the absence of the gas, the control unit controls the ignition device to switch to the off state after a preset time.

[0045] In this technical solution, the above settings avoid frequent start-stop of the ignition device due to instantaneous fluctuations in gas supply, thereby improving combustion stability.

[0046] The positive and progressive effects of this invention are as follows:

[0047] By integrating the generation of spark and oxidizer into the ignition device, this burner boasts a simple structure and eliminates the need for additional gas guide lines. The ignition section is located in a negative pressure zone outside the injector inlet, facilitating the directional drawing of oxidizer into the injector tube for mixing with the fuel gas and primary air, reducing oxidizer escape and achieving better combustion enhancement while minimizing impact on the injector tube structure. The spark output from the ignition section naturally enters the ignition inlet and is then directionally guided to the combustion surface via the ignition channel to prevent backfire. Simultaneously, any small amount of escaped oxidizer can also reach the combustion surface along the ignition channel, achieving rapid ignition and immediate combustion enhancement. These features collectively improve the burner's combustion completeness.

[0048] This combustion control method improves the burner's combustion efficiency. It facilitates the directional intake of the oxidizer into the injector tube, where it mixes with the fuel gas and primary air, reducing oxidizer escape and achieving a better combustion-supporting effect while minimizing impact on the injector tube structure. The spark from the ignition section naturally enters the ignition inlet and is then directionally guided through the ignition channel to the combustion surface, preventing backfire. Simultaneously, any small amount of escaped oxidizer can also reach the combustion surface along the ignition channel, achieving rapid ignition and immediate combustion support. Attached Figure Description

[0049] Figure 1 This is a three-dimensional structural diagram of the burner according to Embodiment 1 of the present invention.

[0050] Figure 2 This is an exploded structural diagram of the burner according to Embodiment 1 of the present invention.

[0051] Figure 3 This is a schematic diagram of the cross-sectional structure of the burner in Embodiment 1 of the present invention.

[0052] Figure 4 This is a schematic diagram of the longitudinal section structure of the burner in Embodiment 1 of the present invention.

[0053] Figure 5 This is a flowchart of the combustion control method according to Embodiment 1 of the present invention.

[0054] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Base assembly; 21. Injector tube; 211. Injector inlet; 22. Nozzle; 23. Negative pressure zone; 24. Ignition device; 241. Ignition part; 25. Ignition bracket; 3. Gas distribution assembly; 31. Guide component; 4. Flame cap; 41. Flame hole; 5. Ignition channel; 51. Ignition inlet; 52. Ignition outlet; 6. Combustion working surface; 61. Inner ring combustion surface; 62. Outer ring combustion surface; 63. Flame rising direction A; Gas injection direction B. Detailed Implementation

[0055] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0056] Example 1

[0057] like Figures 1-4 As shown, this embodiment provides a burner, which includes an ejector tube 21 and an ignition device 24. The ejector tube 21 is used to draw in fluid to form a negative pressure zone 23 outside the ejector inlet 211 of the ejector tube 21.

[0058] The burner also has an ignition channel 5, the ignition inlet 51 of the ignition channel 5 is connected to the negative pressure zone 23, and the ignition outlet of the ignition channel 5 is connected to the combustion working surface 6 of the burner.

[0059] The ignition part 241 of the ignition device 24 can continuously output sparks and combustion accelerant.

[0060] The ignition section 241 is located in the negative pressure zone 23, and enables the combustion accelerant to be drawn into the ejector tube 21 through the negative pressure zone 23.

[0061] The ignition unit 241 is located within the projection area of ​​the ignition inlet 51 along the flame rising direction A.

[0062] In this way, the generation of spark and oxidizer is integrated into the ignition device 24, simplifying the burner structure. The ignition section 241 is located in the negative pressure zone 23 outside the injector inlet 211, facilitating the directional intake of oxidizer into the injector tube 21 for mixing with the fuel gas and primary air, reducing oxidizer escape, achieving better combustion assistance, and minimizing impact on the structure of the injector tube 21. The spark output from the ignition section 241 naturally enters the ignition inlet 51 and is then directionally guided to the combustion working surface 6 via the ignition channel 5 to avoid backfire. Simultaneously, a small amount of escaped oxidizer can also reach the combustion working surface 6 along the ignition channel 5, achieving rapid ignition and immediate combustion assistance. These features collectively enhance the burner's combustion completeness.

[0063] It should be noted that:

[0064] The method by which the ejector tube 21 draws in fluid is based on existing technology. The fluid is typically a mixture of fuel gas and primary air (it can also draw in only fuel gas or similar combustible gases, or only primary air, oxygen, etc.). This can be achieved using the Venturi principle, where high-pressure fuel gas is ejected from the nozzle 22 to form a high-speed jet, creating a local negative pressure at the ejector inlet 211, thereby entraining surrounding air into the ejector tube 21. Alternatively, it can be achieved by combining positive pressure push from a blower with negative pressure suction from the ejector. Another method is a multi-tube ejector structure that utilizes the synergistic effect of multiple fuel gas jets to increase the amount of primary air entrained.

[0065] The "negative pressure zone 23" here refers to the area outside the ejector inlet 211 of the ejector tube 21 where the air pressure is lower than the surrounding atmospheric pressure, not a localized negative pressure zone inside the ejector tube 21. When high-pressure gas is ejected at high speed from the nozzle 22, the airflow velocity increases sharply, and the pressure in the area of ​​high velocity decreases, thus forming a negative pressure zone 23 outside the ejector inlet 211 with a pressure lower than atmospheric pressure. Because the air pressure in this area is lower than the external atmospheric pressure, the surrounding fluid will be drawn into the ejector inlet 211 under the pressure difference. Since the spark extends naturally, and the high-speed ejection of the ejector tube 21 is not conducive to flame maintenance, the possibility of ignition inside the ejector tube 21 is very small.

[0066] The "combustion accelerant" here can be any substance with combustion-supporting properties, such as ozone, reactive oxygen atoms, hydroxyl radicals, hydrogen peroxide, nitrogen oxides, and other reactive substances, or a mixture of the above substances. These combustion accelerants share the common characteristic of providing a higher concentration of reactive oxygen elements or strong oxidizing free radicals than ordinary air, participating in redox reactions during combustion and accelerating the combustion chain reaction.

[0067] The existing "ignition needle" is a needle-shaped electrode used to generate sparks. Although it can perform instantaneous or pulsed repeated discharges to break down the air, the energy is very low and it cannot continuously generate sparks and combustion aids (ionizing oxygen can produce trace amounts of ozone, but it decomposes so quickly that it can be ignored).

[0068] In this embodiment, the ignition device 24 includes an electric flame device.

[0069] Oxygen is present around the ignition device 24, and the combustion accelerant is the product of the ionization of oxygen by the ignition device 24.

[0070] In this way, the same ionization process can simultaneously generate a spark and an oxidizer, eliminating the need for additional gas delivery lines or supply materials, further simplifying the burner's structure. Here, "electric flame device" refers to a device that uses electrical energy to ionize gas and generate a flame. Of course, in other embodiments, the ignition device can be other devices, and the oxidizer can be generated in ways other than oxygen ionization, such as storing and decomposing an oxidizer, or mixing different raw materials in real-time to produce an oxidizer through a chemical reaction.

[0071] In this embodiment, the ignition device 24 is a plasma discharge device, which simultaneously generates a high-temperature spark and a large amount of active substances, including ozone, active oxygen atoms, and free radicals, as a combustion accelerant during gas discharge. It has high discharge efficiency and a large yield of active substances, providing sufficient combustion accelerant. In other embodiments, the ignition device may also be other devices capable of simultaneously generating sparks and combustion accelerants, such as an arc discharge device.

[0072] In this embodiment, the combustion improver includes ozone. During combustion, ozone rapidly decomposes at high temperatures (typically above 900°C) to produce active oxygen atoms, which significantly accelerates the combustion chain reaction, increases flame temperature, reduces emissions of carbon monoxide and unburned hydrocarbons, and improves combustion thermal efficiency. Simultaneously, the burner's structure allows ozone to be decomposed at high temperatures in the ignition channel 5 and combustion working surface 6, preventing its release into the environment and eliminating its irritating odor and health risks. With this embodiment, the combustion speed is increased by 10%–30%, the flame temperature is increased, CO emissions are reduced, and thermal efficiency is increased by 3%–5%. In other embodiments, the combustion improver can be any of the aforementioned combustible active substances.

[0073] In this embodiment, the burner also includes a nozzle 22, which is used to inject gas into the injection inlet 211. The ignition part 241 is not on the gas injection direction B of the nozzle 22, avoiding direct impact of the high-speed gas jet on the ignition part 241 and improving the stability of the spark used for ignition. At the same time, it reduces the deposition of impurities in the gas on the surface of the ignition part 241 and extends the service life of the ignition device 24. In other embodiments, the positional relationship between the nozzle and the ignition part can also be such that the ignition part is located within the projection area of ​​the nozzle along the gas injection direction, to adapt to different diameter injection tubes and gas stoves with different power. The guide boundary can be flexibly adjusted according to the actual size to improve the compatibility of the burner.

[0074] In this embodiment, the ignition channel 5 is arranged along the upward direction of the flame A, which follows the natural trend of the spark output by the ignition unit 241 and the upward movement of the gas in the ignition channel 5 due to the decrease in density caused by heating. This facilitates maintaining the positive airflow direction from the ignition inlet 51 to the ignition outlet 52 in the ignition channel 5, avoiding backflow of flame or airflow, and further improving the safety of the burner.

[0075] In this embodiment, the combustion working surface 6 includes an inner ring combustion surface 61 and an outer ring combustion surface 62.

[0076] The combustion working surface 6 is also provided with a flame transfer groove 63, which is used to transfer the flame between the inner ring combustion surface 61 and the outer ring combustion surface 62.

[0077] In this way, ignition outlet 52 can be set only at the inner ring combustion surface 61 or the outer ring combustion surface 62 to achieve ignition of the entire combustion working surface 6, which is beneficial for the flexible arrangement of the ignition device 24 in the negative pressure zone 23. In this embodiment, since the ejector inlet 211 and the nozzle 22 are set corresponding to the outer ring combustion surface 62, the negative pressure zone 23 is on the outer ring combustion surface 62, and the ignition outlet 52 is only set at the outer ring combustion surface 62. In other embodiments, the ignition outlet can also be set only at the inner ring combustion surface; or it can be set at both the inner ring combustion surface and the outer ring combustion surface; or the burner is designed as a single-ring combustion, in which case the ignition channel is not required.

[0078] In this embodiment, the cross-sectional area of ​​the ignition channel 5 is larger than the cross-sectional area of ​​the flame holes 41 on the combustion working surface 6 (distributed on the burner cap 4 in this embodiment), which improves the ignition success rate and facilitates the simultaneous ignition of multiple surrounding flame holes 41. Simultaneously, the larger ignition channel 5 reduces the impact of sparks on the intensity of the ignition channel 5 and lowers the possibility of blockage, further extending the burner's service life. In other embodiments, the cross-sectional areas of the ignition channel and the flame holes on the combustion working surface can be set as needed, or the flame holes themselves can be used as the ignition channel.

[0079] In this embodiment, the burner also includes a flow guide 31, which guides the combustion improver to the injection inlet 211, allowing the combustion improver to be more concentratedly introduced into the injection inlet 211, further reducing the dispersion of the combustion improver, improving utilization efficiency, and enhancing the combustion improvement effect. In other embodiments, the flow guide may not be provided, and the existing airflow of the burner may be used to guide the combustion improver to the injection inlet.

[0080] In this embodiment, the guiding surface of the flow guide 31 is a concave arc-shaped surface to reduce turbulence; in other embodiments, the flow guide can be optimized according to the ejector tube diameter and airflow characteristics, including variations such as conical surface, inclined surface, and multi-segment arc surface.

[0081] In this embodiment, the flow guide 31 is located on the gas distribution assembly 3, which facilitates disassembly and assembly.

[0082] In this embodiment, the ignition device 24 is mounted via an ignition bracket 25. The ignition bracket 25 and the ejector tube 21 are integrally formed and, as part of the base assembly 2, can be assembled and disassembled together with the ejector tube 21. The base assembly 2 is connected to the base plate 1. This facilitates maintaining the relative positions of the ignition device 24 and the ejector tube 21 during assembly, avoiding any impact on the ejection of the combustion-supporting agent during assembly and disassembly. In other embodiments, the ignition bracket and the ejector tube can also be detached from each other.

[0083] In this embodiment, the ignition device 24 is partially encapsulated, using high-temperature flame-retardant materials (heat-resistant alloys or other structurally stable materials under high-temperature environments) and a high-pressure isolation design to prevent high temperatures from affecting the component's lifespan, avoid the ignition device 24 being sucked into the ejector tube 21 after detachment, thus preventing structural damage, and also ensure the safe isolation between the ejector tube's main gas path and the electrical circuit. In other embodiments, the ignition device can be installed using any safe method.

[0084] In this embodiment, the ignition device 24 is entirely located in the negative pressure zone 23. In other embodiments, especially in small gas stoves, while ensuring that the ignition part is located within the negative pressure zone, other parts of the ignition device can be located on the outer layer of the burner or embedded in other structures of the burner to avoid obstructing the injection inlet or other structures.

[0085] like Figure 5 As shown, this embodiment also provides a combustion control method, which uses the burner described above.

[0086] The steps of the combustion control method include:

[0087] S1. Switch the ignition device 24 to the on state, and the ignition part 241 generates sparks and combustion aid;

[0088] S2, The ejector tube 21 draws in the fuel gas, primary air and combustion oxidizer through the ejector inlet 211 to form a mixed gas;

[0089] S3. The mixed gas is ejected from the flame hole 41 of the combustion working face 6 and ignited by a spark.

[0090] This improves the combustion efficiency of the burner. It facilitates the directional intake of the combustion-supporting agent into the injector tube 21, where it mixes with the fuel gas and primary air, reducing agent leakage and achieving a better combustion-supporting effect, while minimizing the impact on the structure of the injector tube 21. The spark output from the ignition unit 241 naturally enters the ignition inlet 51 and is then directionally guided to the combustion working surface 6 via the ignition channel 5 to avoid backfire. Simultaneously, a small amount of leaked combustion-supporting agent can also reach the combustion working surface 6 along the ignition channel 5, achieving rapid ignition and immediate combustion support. In other embodiments, the combustion control method can flexibly select the operating timing of the ignition device as needed: full-time operation (continuous enhanced combustion), operation only during ignition (auxiliary ignition), or on-demand control (intelligent power management), etc. The steps can also be adaptively interchanged (e.g., injecting first, then igniting the ignition device 24 to ensure fuel gas concentration) to adapt to combustion requirements.

[0091] In this embodiment, the burner also includes a control unit and an airflow sensor (not shown in the figure), and the airflow sensor is electrically connected to the control unit and the ignition device 24.

[0092] Combustion control methods also include:

[0093] S4. Use a gas flow sensor to detect the state of the gas in the ejector tube 21;

[0094] When the gas flow sensor detects the absence of gas, the control unit controls the ignition device 24 to switch to the off state.

[0095] This avoids safety risks caused by misoperation or air-to-air discharge, and further reduces the amount of combustion-supporting agent released. Here, S4 can be performed before, after, or simultaneously with steps S1-S3.

[0096] In this embodiment, when the gas flow sensor detects the absence of gas, the step of the control unit controlling the ignition device 24 to switch to the off state further includes:

[0097] S41. Set the preset time;

[0098] When the gas flow sensor detects the absence of gas, the control unit controls the ignition device 24 to switch to the off state after a preset time.

[0099] This avoids frequent start-stop of the ignition device 24 due to instantaneous fluctuations in gas supply, thus improving combustion stability.

[0100] In this embodiment, the preset time is 4 seconds to avoid the ignition device 24 having an excessively long no-ignition time or being too sensitive to shut down. In other embodiments, the preset time can be any time that allows the ignition device 24 to start and stop reasonably, typically 3 to 5 seconds.

[0101] Example 2

[0102] This embodiment also provides a burner, whose structure is generally the same as the burner in Embodiment 1, except that:

[0103] In this embodiment, the ignition device is an arc discharge device, which forms a continuous and stable high-temperature arc between the electrodes, resulting in a high ignition success rate. Furthermore, during the discharge process, air is ionized to produce ozone, which serves as a combustion aid. The device has a simple structure and high reliability.

[0104] Example 3

[0105] This embodiment also provides a burner, whose structure is generally the same as the burner in Embodiment 1, except that:

[0106] In this embodiment, the ignition device is a dielectric barrier discharge device (DBD), which consists of two electrodes and at least one insulating dielectric layer. When a sufficiently high AC high voltage is applied between the electrodes, the gas in the gas gap is broken down to form a discharge, uniformly generating sparks and active substances such as ozone.

[0107] In this embodiment, the ignition section is pointed towards the ejector inlet so that the ejector tube can better eject the active material generated by the ignition section.

[0108] In this embodiment, an intelligent burner is also provided. The intelligent burner equipped with the ignition device has an intelligent voice control module. The intelligent voice control module includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the burner to perform corresponding operations, thereby realizing intelligent control of the burner and improving the user experience of using the intelligent burner.

[0109] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A burner, characterized in that, It includes an ejector tube and an ignition device, wherein the ejector tube is used to draw in fluid to form a negative pressure zone outside the ejector inlet of the ejector tube; The burner also has an ignition channel, the ignition inlet of which is connected to the negative pressure zone, and the ignition outlet of which is connected to the combustion working surface of the burner. The ignition part of the ignition device can continuously output sparks and combustion accelerator; The ignition unit is located within the negative pressure zone, and enables the combustion accelerator to be drawn into the ejector tube through the negative pressure zone. The ignition unit is located within the projection area of ​​the ignition inlet along the upward direction of the flame.

2. The burner as claimed in claim 1, characterized in that, The ignition device includes an electric flame device; Oxygen is present around the ignition device, and the combustion aid is a product of the ionization of oxygen by the ignition device.

3. The burner as described in claim 2, characterized in that, The electric flame device is a plasma discharge device, an arc discharge device, or a dielectric barrier discharge device; and / or, The combustion accelerant includes ozone.

4. The burner as claimed in claim 1, characterized in that, The burner also includes a nozzle for injecting gas into the ejector inlet; The ignition point is not in the gas injection direction of the nozzle.

5. The burner as claimed in claim 1, characterized in that, The ignition channel is arranged along the upward direction of the flame.

6. The burner as claimed in claim 1, characterized in that, The combustion working surface includes an inner ring combustion surface and an outer ring combustion surface; The combustion working surface is also provided with a flame transfer groove, which is used to transfer the flame between the inner ring combustion surface and the outer ring combustion surface.

7. The burner as claimed in claim 1, characterized in that, The cross-sectional area of ​​the ignition channel is larger than the cross-sectional area of ​​the flame hole on the combustion working surface; and / or, The burner also includes a flow guide for guiding the combustion aid to the injection inlet.

8. The burner as claimed in claim 1, characterized in that, The burner also includes a control unit and an airflow sensor. The airflow sensor is used to detect the state of the gas in the injector tube. The airflow sensor is electrically connected to the control unit and the ignition device.

9. A combustion control method, characterized in that, It employs a burner as described in any one of claims 1-8; The steps of the combustion control method include: S1. Switch the ignition device to the on state, and the ignition part generates the spark and the combustion accelerator; S2. The ejector tube draws in the combustion gas, air and the combustion accelerator through the ejector inlet to form a mixed gas. S3. The mixed gas is ejected from the flame hole of the combustion working surface and ignited by the spark.

10. The combustion control method as described in claim 9, characterized in that, The burner also includes a control unit and an airflow sensor, and the airflow sensor is electrically connected to the control unit and the ignition device. The combustion control method further includes: S4. Use the airflow sensor to detect the state of the gas in the ejector tube; When the airflow sensor detects the absence of the gas, the control unit controls the ignition device to switch to the off state after a preset time.

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