Burner flame cap, burner, gas hob and ignition control method thereof

Abstract

The application discloses a burner fire cover, a burner, a gas stove and an ignition control method thereof, and belongs to the field of kitchen appliances. The burner fire cover is provided with a main fire hole, a main fire cavity and an ignition hole. The main fire cavity is in communication with the main fire hole, the ignition hole is in communication with the main fire hole, and at least one ignition cavity is further arranged on the burner fire cover. The ignition cavity is in communication with the ignition hole, the ignition cavity and the main fire cavity share one draft tube, the ignition cavity is closer to the air inlet end of the draft tube than the main fire cavity, and the volume of the ignition cavity is smaller than that of the main fire cavity. A heating element is arranged on the burner fire cover and arranged around the main fire hole close to the ignition hole. The structure can preferentially ensure stable ignition, match the main fire gas supply, adjust the air-fuel flow required by the main fire based on the current ignition environment, thereby improving the ignition success rate of the gas stove, reducing the influence of factors unfavorable to ignition, and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to burner caps, burners, gas stoves and their ignition control methods. Background Technology

[0002] Gas stoves are one of the kitchen appliances used for cooking in daily household life. Currently, gas stoves on the market generally have an ignition hole and a main burner hole on the burner cap. Both are connected to the mixing chamber inside the burner cap and share one gas path in the mixing chamber.

[0003] Most household gas stove burners currently use a high-voltage discharge ignition needle to ignite the gas. The ignition needle is typically located near the ignition hole on the stove. During ignition, the discharge end of the ignition needle generates a momentary high potential, producing an electric spark that ignites the gas ejected from the ignition hole. However, fluctuations in the kitchen environment, such as significant gas pressure fluctuations or high humidity, can negatively impact ignition. These fluctuations can lead to unstable ignition at the burner hole, resulting in ignition failures such as flame lift-off, affecting normal user experience and causing a poor user experience.

[0004] Therefore, there is an urgent need to design a burner cap, burner, gas stove and its ignition control method to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a burner cap, a burner, a gas stove and its ignition control method, which can improve the ignition success rate and effectively enhance the user experience.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The burner cap has a main flame port, a main flame chamber, and an ignition port. The main flame chamber is connected to the main flame port, and the ignition port is connected to the main flame port. The burner cap also has at least one ignition chamber, which is connected to the ignition port. The ignition chamber and the main flame chamber share an injector tube. The ignition chamber is closer to the air inlet end of the injector tube than the main flame chamber, and the volume of the ignition chamber is smaller than that of the main flame chamber. The burner cap is equipped with a heating element, which is disposed around the main flame port near the ignition port.

[0008] As a preferred embodiment of the burner cap, the upper part of the ignition chamber is connected to the ignition hole, and the bottom of the ignition chamber is connected to the ejector tube.

[0009] As the preferred technical scheme of the above-mentioned burner fire cover, the heating element is in a ring shape, and a ring-shaped groove is formed on the burner fire cover, and the heating element is embedded in the ring-shaped groove.

[0010] As the preferred technical scheme of the above-mentioned burner fire cover, the heating element is attached to or embedded in the outer wall of the burner fire cover.

[0011] To achieve the above purpose, the present application also adopts the following technical scheme:

[0012] A burner, comprising a burner head, an ignition needle and the above-mentioned burner fire cover, the burner fire cover is arranged on the burner head, the injection pipe is arranged inside the burner head, the ignition needle is arranged outside the ignition hole, the burner further comprises a humidity sensor and a pressure sensor, the humidity sensor is arranged outside the burner close to the ignition needle, and the pressure sensor is arranged inside the gas pipeline in communication with the injection pipe.

[0013] As the preferred technical scheme of the above-mentioned burner fire cover, the burner further comprises a heating element, and the heating element is arranged around the main fire hole close to the ignition hole.

[0014] To achieve the above purpose, the present application also adopts the following technical scheme:

[0015] A gas stove comprising the above-mentioned burner.

[0016] To achieve the above purpose, the present application also adopts the following technical scheme:

[0017] The ignition control method of the above-mentioned gas stove, the ignition control method of the gas stove comprises:

[0018] The humidity sensor acquires the real-time environmental humidity n around the burner, and the pressure sensor acquires the pressure P1 in the gas pipeline;

[0019] It is judged whether the real-time environmental humidity n is greater than 50%, if yes, the heating element is started to heat for a first preset time, and the first preset time is T=50(n-50%)s;

[0020] If not, the gas nozzle flow and the damper opening degree are adjusted according to the real-time environmental humidity n and the pressure P1;

[0021] The igniter ignites.

[0022] As the preferred technical scheme of the above-mentioned ignition control method of the gas stove, adjusting the gas nozzle flow and the damper opening degree according to the real-time environmental humidity n and the pressure P1 comprises: the gas nozzle flow A=80(n / 0.5-0.3)m / s, and the damper opening degree B1=50%(1-0.5(P1 / 2000-1)).

[0023] As a preferred technical solution for the ignition control method of the aforementioned gas stove, the igniter further includes the following after ignition:

[0024] Determine whether the gas stove ignites successfully within the second preset time. If it does, the gas stove enters continuous use mode; if not, extend the ignition pulse time to the third preset time.

[0025] As a preferred technical solution for the ignition control method of the above-mentioned gas stove, after successful ignition, it is determined whether the user has changed the fire level. If so, the damper opening is adjusted according to the fire level requirement; otherwise, gas is supplied to the burner with the current gas nozzle flow rate and damper opening.

[0026] As a preferred technical solution for the ignition control method of the above-mentioned gas stove, adjusting the damper opening according to the firepower level requirement includes: the pressure sensor obtains the pressure P2 in the gas pipeline, and at this time the damper opening is adjusted to B2 = 50% (1 - 0.5(P2 / 2000 - 1)).

[0027] The burner cap disclosed in this invention is provided with a main flame hole, a main flame chamber, and an ignition hole. The main flame chamber is connected to the main flame hole, and the ignition hole is also connected to the main flame hole. The burner cap also has at least one ignition chamber, which is connected to the ignition hole. The ignition chamber and the main flame chamber share an injector tube. The ignition chamber is closer to the gas inlet end of the injector tube than the main flame chamber, and its volume is smaller than that of the main flame chamber. A heating element is provided on the burner cap, positioned around the main flame hole near the ignition hole. This structure allows gas to fill the ignition chamber first, prioritizing gas supply to it and thus prioritizing ignition needs before meeting the main flame requirements. This improves the ignition success rate of the gas stove and effectively enhances the user experience.

[0028] This invention discloses a burner, a gas stove, and an ignition control method for the gas stove. The burner includes a humidity sensor and a pressure sensor. The humidity sensor is located on the outside of the burner near the ignition needle, and the pressure sensor is located inside the gas pipeline connected to the injector. By using a humidity sensor to detect the current ambient humidity and a pressure sensor inside the gas pipeline to detect the pipeline pressure, suitable gas conditions are provided for ignition based on the current ignition environment. This solves problems such as difficulty in ignition or unstable ignition causing flameout due to the influence of pipeline pressure and ambient humidity, thereby improving the ignition success rate of the gas stove and enhancing the user experience. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of the burner provided in a specific embodiment of the present invention;

[0030] Figure 2is a flow chart of the ignition control method of the gas stove provided in the embodiment of the present application.

[0031] In the drawings:

[0032] 1, main fire hole; 2, main fire cavity; 3, ignition hole; 4, ignition cavity; 5, fire transmission channel;

[0033] 100, burner fire cap; 101, heating element; 200, burner head; 201, ejector pipe; 300, ignition needle; 400, humidity sensor; 500, pressure sensor; 600, gas pipeline; 700, nozzle; 800, air door; 900, switch button. DETAILED DESCRIPTION

[0034] In order to make the above objectives, characteristics and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] This embodiment provides a gas stove, which includes a burner. For example... Figure 1 As shown, the burner includes a burner head 200, an ignition needle 300, and a burner cap 100. The burner cap 100 is mounted on the burner head 200, and an injector tube 201 is installed inside the burner head 200. The burner cap 100 is provided with a main flame hole 1, a main flame chamber 2, and an ignition hole 3. The main flame chamber 2 communicates with the main flame hole 1, and the ignition hole 3 communicates with the main flame hole 1. The ignition needle 300 is positioned close to the outside of the ignition hole 3.

[0041] The burner cap 100 in the embodiment further has at least one ignition cavity 4, the ignition cavity 4 is communicated with the ignition hole 3, the ignition cavity 4 and the main fire cavity 2 share one ejector pipe 201, the ignition cavity 4 is closer to the air inlet end of the ejector pipe 201 than the main fire cavity 2, and the volume of the ignition cavity 4 is smaller than that of the main fire cavity 2. The structure enables the gas to first fill the ignition cavity 4, so as to realize the purpose of preferentially supplying gas to the ignition cavity 4 to meet the ignition demand first and then the main fire demand, thereby improving the ignition success rate of the gas stove and effectively improving the user experience.

[0042] Specifically, the upper part of the ignition cavity 4 is communicated with the ignition hole 3, the upper part of the main fire cavity 2 is communicated with the main fire hole 1, the ignition hole 3 and the main fire hole 1 are both inclined upward from inside to outside, and are non-parallel, and are communicated through the fire transmission channel 5. The bottom of the ignition cavity 4 and the bottom of the main fire cavity 2 are respectively communicated with the ejector pipe 201, and the structure is compact.

[0043] The burner in the embodiment further comprises a humidity sensor 400 and a pressure sensor 500, the humidity sensor 400 is arranged on the outer side of the burner close to the ignition needle 300, and is used to detect the current environmental humidity, and the pressure sensor 500 is arranged in the gas pipeline 600 communicated with the ejector pipe 201, and is used to detect the pipeline pressure. By arranging the humidity sensor 400 and the pressure sensor 500, the air-fuel flow required for ignition based on the current ignition environment is realized, suitable gas conditions are provided for ignition, and problems such as difficult ignition or ignition instability causing extinction caused by the influence of pipeline pressure and environmental humidity are solved, thereby improving the ignition success rate of the gas stove.

[0044] The burner in the embodiment further comprises a heating element 101, the heating element 101 is arranged around the main fire hole 1 close to the ignition hole 3. When the humidity sensor 400 detects that the humidity near the ignition hole 3 will obviously adversely affect ignition, the humidity is reduced to a condition suitable for ignition through the heating element 101, and then ignition is started, thereby improving the ignition success rate. The heating element 101 can be but is not limited to a PTC heating element.

[0045] The heating element 101 can be of a ring structure, and a ring groove is formed in the burner cap 100, and the heating element 101 is embedded in the ring groove. The heating element 101 can also be directly attached to the outer wall of the burner cap 100 or embedded in the outer wall of the burner cap 100. The specific structure of the heating element 101 can be designed according to actual conditions.

[0046] The embodiment also provides a kind of ignition control method of the above gas stove, the ignition control method is adjusted according to the current environment humidity and pipeline pressure obtained, nozzle 700 flow and damper 800 opening, and increase the heating element 101 of improving humidity, so that air-fuel flow and humidity condition reach the condition suitable for current ignition;After ignition succeeds, nozzle 700 flow and damper 800 opening are adjusted according to gear requirement again, to match the air-fuel requirement of main fire hole 1.It is, air-fuel of ignition hole 3 and main fire hole 1 is supplied separately, fine supply, priority meets ignition demand, then meets main fire demand.

[0047] As Figure 2 The ignition control method of the gas stove includes:

[0048] The gas stove is opened;

[0049] After user presses switch button 900, humidity sensor 400 and pressure sensor 500 start working;

[0050] Humidity sensor 400 obtains real-time environment humidity n around burner, and pressure sensor 500 obtains pressure P1 in gas pipeline 600;

[0051] It is judged whether real-time environment humidity n is greater than 50%, if yes, heating element 101 is started to heat for first preset time, if no, controller adjusts gas nozzle 700 flow and damper 800 opening according to real-time environment humidity n and pressure P1, so that air-fuel flow reaches the condition suitable for current ignition;

[0052] Igniter ignites.

[0053] Specifically, adjusting gas nozzle 700 flow and damper 800 opening according to obtained real-time environment humidity n and pressure P1 includes: gas nozzle 700 flow is opened at A=80 (n / 0.5-0.3) m / s, and damper 800 opening supplies gas for gas stove ignition at B1=50% (1-0.5 (P1 / 2000-1)).

[0054] The above first preset time is T=50 (n-50%) s.Environment humidity sensor 400 is set, when humidity is large and not conducive to ignition, first use heating element 101 to reduce humidity influence, then combine pipeline pressure, to provide suitable gas condition for ignition, solve the problem that due to the influence of pipeline pressure and environment humidity, it is not easy to ignite or ignition is unstable and causes flameout etc..Optionally, voice alarm can also be arranged on the gas stove, when detecting that environment humidity n is greater than 50%, through voice alarm, it emits beeping or alarm sound to prompt user that humidity is too large, on the one hand, user can reduce humidity around burner through other methods, on the other hand, if heating element 101 automatic starting fails, it can also be started manually.

[0055] The igniter further comprises: judging whether the gas stove is successfully ignited within a second preset time after the igniter is ignited, if yes, the gas stove enters a continuous use state; if no, the ignition pulse is prolonged for a third preset time.

[0056] In the embodiment, the second preset time is 5s, and the third preset time is 3s. Of course, the second preset time and the third preset time can be set according to actual conditions, and are not limited to the above times.

[0057] After successful ignition, it is judged whether the user changes the firepower level, if yes, the damper opening degree 800 is adjusted according to the firepower level requirement to match the air-fuel requirement of the main fire hole 1; if no, the gas is supplied to the burner with the current gas nozzle 700 flow and damper opening degree 800.

[0058] Adjusting the damper opening degree 800 according to the firepower level requirement comprises: the pressure sensor 500 obtains the pressure P2 in the gas pipeline 600, and at this time, the damper opening degree 800 is adjusted to B2=50%(1-0.5(P2 / 2000-1)).

[0059] The ignition control method of the gas stove can adjust the nozzle 700 flow and the damper opening degree 800 according to the obtained current environmental humidity and pipeline pressure, so that the air-fuel flow reaches the condition suitable for the current ignition; after successful ignition, the nozzle 700 flow and the damper opening degree 800 are adjusted according to the firepower level requirement to match the air-fuel requirement of the main fire hole 1. That is, it realizes priority to ensure stable ignition, and then matches the main fire gas supply, effectively improves the ignition success rate, and improves the user experience.

[0060] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A burner cap, having a main flame hole (1), a main flame chamber (2), and an ignition hole (3), wherein the main flame chamber (2) is connected to the main flame hole (1), and the ignition hole (3) is connected to the main flame hole (1), characterized in that, The burner cap (100) is also provided with at least one ignition chamber (4), which is connected to the ignition hole (3). The ignition chamber (4) and the main fire chamber (2) share an ejector tube (201). The ignition chamber (4) is closer to the air inlet end of the ejector tube (201) than the main fire chamber (2), and the volume of the ignition chamber (4) is smaller than the volume of the main fire chamber (2). The burner cap is provided with a heating element (101), which is arranged around the main fire hole (1) near the ignition hole (3).

2. The burner cap according to claim 1, characterized in that, The upper part of the ignition chamber (4) is connected to the ignition hole (3), and the bottom of the ignition chamber (4) is connected to the ejector tube (201).

3. The burner cap according to claim 1, characterized in that, The heating element (101) has an annular structure, and the burner cap (100) has an annular groove, in which the heating element (101) is embedded.

4. The burner cap according to claim 1, characterized in that, The heating element (101) is attached to or embedded in the outer wall of the burner cap (100).

5. A burner, comprising a burner head (200), an ignition needle (300), and a burner cap (100) according to any one of claims 1-4, wherein the burner cap (100) is disposed on the burner head (200), the injector tube (201) is disposed inside the burner head (200), and the ignition needle (300) is disposed outside the ignition hole (3), characterized in that, The burner also includes a humidity sensor (400) and a pressure sensor (500). The humidity sensor (400) is located on the outside of the burner near the ignition needle (300), and the pressure sensor (500) is located inside the gas pipeline (600) connected to the ejector tube (201).

6. A gas stove, characterized in that, Includes the burner as described in claim 5.

7. The ignition control method for a gas stove according to claim 6, characterized in that, The ignition control method of the gas stove includes: The humidity sensor (400) acquires the real-time ambient humidity n around the burner, and the pressure sensor (500) acquires the pressure P1 in the gas pipeline (600); Determine whether the real-time ambient humidity n is greater than 50%. If so, start the heating element (101) to heat for a first preset time, where the first preset time is T = 50(n-50%)s. If not, adjust the flow rate of the gas nozzle (700) and the opening of the damper (800) according to the real-time ambient humidity n and the pressure P1; The igniter is used for ignition.

8. The ignition control method for a gas stove according to claim 7, characterized in that, Adjusting the flow rate of the gas nozzle (700) and the opening of the damper (800) according to the real-time ambient humidity n and pressure P1 includes: gas nozzle (700) flow rate A = 80(n / 0.5-0.3) m / s, and damper (800) opening B1 = 50% (1-0.5(P1 / 2000-1)).

9. The ignition control method for a gas stove according to claim 7, characterized in that, After the igniter ignites, it also includes: Determine whether the gas stove ignites successfully within the second preset time. If it does, the gas stove enters continuous use mode; if not, extend the ignition pulse time to the third preset time.

10. The ignition control method for a gas stove according to claim 9, characterized in that, After successful ignition, determine whether the user has changed the fire level. If so, adjust the opening of the damper (800) according to the fire level requirement. If not, supply gas to the burner with the current gas nozzle (700) flow rate and damper (800) opening.

11. The ignition control method for a gas stove according to claim 10, characterized in that, Adjusting the opening of the damper (800) according to the firepower level requirement includes: the pressure sensor (500) obtains the pressure P2 in the gas pipeline (600), and at this time the opening of the damper (800) is adjusted to B2 = 50% (1 - 0.5(P2 / 2000 - 1)).

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