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. The burner comprises a wind speed sensor and a pressure sensor. The wind speed sensor is arranged on the outer side of the burner close to the ignition needle, and the pressure sensor is arranged in the inner part of the gas pipeline in communication with the draft tube. The structure can preferentially ensure stable ignition, match the main fire gas supply, realize the adjustment of 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] The present application relates to the technical field of kitchen appliances, in particular to a burner cap, a burner, a gas stove and an ignition control method thereof. BACKGROUND

[0002] The gas stove is one of the kitchen appliances for cooking in daily life. At present, the burner cap of the gas stove on the market is generally provided with an ignition hole and a main fire hole, both of which are communicated with a gas mixing chamber in the burner cap and share a gas passage in the gas mixing chamber.

[0003] At present, the household gas stove burner generally uses high-voltage discharge of an ignition needle to ignite the gas. The ignition needle is generally arranged near the ignition hole of the gas stove. When igniting, the discharge end of the ignition needle generates a momentary high potential to generate an electric spark, thereby igniting the gas sprayed from the ignition hole to realize ignition of the gas stove. When used by the user, the kitchen environment factors may fluctuate, for example, the relative fluctuation of the gas pressure is relatively large, or the environmental wind may also adversely affect the ignition, which may cause the gas amount at the ignition hole of the burner cap of the gas stove to be unstable in the use state, thereby causing problems such as ignition hole flameout and ignition failure, affecting the normal use of the user and the poor experience.

[0004] Therefore, it is urgent to design a burner cap, a burner, a gas stove and an ignition control method thereof to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a burner cap, a burner, a gas stove and an ignition control method thereof, which can preferentially ensure stable ignition and then match the main fire gas supply, thereby effectively improving the user experience.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] The burner cap is provided with a main fire hole, a main fire chamber and an ignition hole. The main fire chamber is communicated with the main fire hole. The ignition hole is communicated with the main fire hole. The burner cap is further provided with at least one ignition chamber. The ignition chamber is communicated with the ignition hole. The ignition chamber and the main fire chamber share an injection pipe. The ignition chamber is closer to the gas inlet end of the injection pipe than the main fire chamber, and the volume of the ignition chamber is smaller than that of the main fire chamber.

[0008] As a preferred technical solution of the above-mentioned burner cap, the upper part of the ignition chamber is communicated with the ignition hole, and the bottom part of the ignition chamber is communicated with the injection pipe.

[0009] To achieve this purpose, the present application also adopts the following technical solutions:

[0010] The burner comprises a burner head, an ignition needle and the burner cap as described above, the burner cap 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 wind speed sensor and a pressure sensor, the wind speed sensor is arranged outside the burner near the ignition needle, and the pressure sensor is arranged inside a gas pipeline in communication with the injection pipe.

[0011] To achieve the above object, the present application further adopts the following technical solutions.

[0012] The gas stove comprises the burner as described above.

[0013] To achieve the above object, the present application further adopts the following technical solutions.

[0014] The ignition control method of the gas stove as described above comprises the following steps.

[0015] The wind speed sensor acquires a real-time wind speed V around the burner, and the pressure sensor acquires a pressure P1 in the gas pipeline;

[0016] The gas nozzle flow and the damper opening degree are adjusted according to the acquired real-time wind speed V and pressure P1, so that the air-fuel flow reaches a condition suitable for current ignition;

[0017] The igniter ignites.

[0018] As a preferred technical solution of the ignition control method of the gas stove, the adjustment of the gas nozzle flow and the damper opening degree according to the acquired real-time wind speed V and pressure P1 comprises: the gas nozzle flow is opened at A = 80 (0.75 + V / 0.4) m / s, and the damper opening degree is supplied with gas for the ignition of the gas stove at B1 = 50% (1-0.5 (P1 / 2000 + V / 0.1-2)).

[0019] As a preferred technical solution of the ignition control method of the gas stove, the ignition of the igniter further comprises the following steps.

[0020] It is judged whether the gas stove is successfully ignited within a first preset time, if yes, the gas stove enters a continuous use state, and if no, the ignition pulse is prolonged for a second preset time.

[0021] As a preferred technical solution of the ignition control method of the gas stove, the first preset time is 5s, and the second preset time is 3s.

[0022] 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 air damper opening is adjusted according to the fire level requirement to match the air-fuel quantity requirement of the main burner. If not, gas is supplied to the burner with the current gas nozzle flow rate and air damper opening.

[0023] 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)).

[0024] The burner cap disclosed in this invention is provided with 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 also 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 gas inlet end of the injector tube than the main flame chamber, and its volume is smaller than that of the main flame chamber. 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.

[0025] This invention discloses a burner, a gas stove, and an ignition control method for the gas stove. The burner includes a wind speed sensor and a pressure sensor. The wind speed 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 wind speed sensor to detect the current ambient wind speed and a pressure sensor in the gas pipeline to detect the pipeline pressure, the air-fuel flow rate required for ignition can be adjusted based on the current ignition environment, thereby improving the ignition success rate of the gas stove and reducing the impact of factors detrimental to ignition. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the burner provided in a specific embodiment of the present invention;

[0027] Figure 2 This is a flowchart of the ignition control method for a gas stove provided in a specific embodiment of the present invention.

[0028] In the picture:

[0029] 1. Main flame port; 2. Main flame chamber; 3. Ignition port; 4. Ignition chamber; 5. Flame transmission channel;

[0030] 100, burner cap; 200, burner tip; 201, injection pipe; 300, ignition needle; 400, wind speed sensor; 500, pressure sensor; 600, gas pipe; 700, nozzle; 800, damper; 900, switch button. DETAILED DESCRIPTION

[0031] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments described below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "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 therefore cannot be understood as indicating or implying 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 limiting the present application.

[0033] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like 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 explicitly specified and limited.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In this embodiment, the burner cap 100 is further provided with at least one ignition chamber 4, which is connected to the ignition hole 3. The ignition chamber 4 and the main flame chamber 2 share an injector tube 201. The ignition chamber 4 is closer to the gas inlet end of the injector tube 201 than the main flame chamber 2, and the volume of the ignition chamber 4 is smaller than that of the main flame chamber 2. This structure allows the gas to fill the ignition chamber 4 first, so as to prioritize the gas supply to the ignition chamber 4, thereby achieving the purpose of prioritizing the ignition demand and then satisfying the main flame demand, thus improving the ignition success rate of the gas stove and effectively enhancing the user experience.

[0039] Specifically, the upper part of the ignition chamber 4 is connected to the ignition hole 3, and the upper part of the main ignition chamber 2 is connected to the main ignition hole 1. Both the ignition hole 3 and the main ignition hole 1 are designed to be inclined upward from the inside out, and they are not parallel. They are connected by the ignition channel 5. The bottom of the ignition chamber 4 and the bottom of the main ignition chamber 2 are respectively connected to the ejector tube 201, resulting in a compact structure.

[0040] The burner in the embodiment further comprises a wind speed sensor 400 and a pressure sensor 500. The wind speed sensor 400 is arranged on the outer side of the burner close to the ignition needle 300, and is used to detect the wind speed of the current ambient wind. The pressure sensor 500 is arranged inside the gas pipeline 600 in communication with the draft tube 201, and is used to detect the pipeline pressure. By arranging the wind speed 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 instability or off-flame extinguishing caused by the influence of pipeline pressure and ambient wind on ignition are solved, thereby improving the ignition success rate of the gas stove.

[0041] The embodiment further provides a kind of ignition control method of above-mentioned gas stove, as shown in figure Figure 2 The ignition control method of the gas stove comprises:

[0042] The gas stove is opened;

[0043] After the user presses the switch button 900, the wind speed sensor 400 and the pressure sensor 500 start working;

[0044] The wind speed sensor 400 obtains the real-time wind speed V around the burner, and the pressure sensor 500 obtains the pressure P1 in the gas pipeline 600;

[0045] The controller adjusts the gas nozzle 700 flow and the damper 800 opening degree according to the obtained real-time wind speed V and pressure P1, so that the air-fuel flow reaches the condition suitable for current ignition;

[0046] The igniter ignites.

[0047] Specifically, adjusting the gas nozzle 700 flow and the damper 800 opening degree according to the obtained real-time wind speed V and pressure P1 comprises: the gas nozzle 700 flow is opened at A=80(0.75+V / 0.4)m / s, and the damper 800 opening degree is supplied with gas for gas stove ignition at B1=50%(1-0.5(P1 / 2000+V / 0.1-2)).

[0048] After the igniter ignites, it further comprises: judging whether the gas stove ignites successfully within a first preset time, if yes, the gas stove enters a continuous use state;If not, the ignition pulse is extended for a second preset time.

[0049] In the embodiment, the first preset time is 5s;The second preset time is 3s. Of course, the first preset time and the second preset time can be set according to actual conditions, and are not limited to the above-mentioned time.

[0050] After the ignition is successful, the burner enters a continuous use state, during which it is determined whether the user changes the firepower level, if yes, the damper 800 opening degree needs to be adjusted according to the firepower level requirement to match the air-fuel requirement of the main fire hole 1, if no, the current gas nozzle 700 flow and damper 800 opening degree are used to supply gas to the burner.

[0051] Adjusting the damper 800 opening degree according to the firepower level requirement includes that the pressure sensor 500 obtains the pressure P2 in the gas pipeline 600, at this time the damper 800 opening degree is adjusted to B2=50%(1-0.5(P2 / 2000-1)).

[0052] The ignition control method of the gas stove can adjust the nozzle 700 flow and damper 800 opening degree according to the obtained current environmental wind speed and pipeline pressure, so that the air-fuel flow reaches the condition suitable for the current ignition; after the ignition is successful, the nozzle 700 flow and damper 800 opening degree are adjusted according to the firepower level requirement to match the air-fuel requirement of the main fire hole 1. That is, it realizes the priority to ensure stable ignition, and then matches the main fire gas supply, effectively improves the user experience.

[0053] Note that the above is only the preferred embodiment 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 (100) provided with a main flame hole (1), a main flame cavity (2) and an ignition hole (3), the main flame cavity (2) being in communication with the main flame hole (1), the ignition hole (3) being in communication with the main flame hole (1), characterized in that, The burner fire cover (100) is further provided with at least one ignition cavity (4) in communication with the ignition hole (3), the ignition cavity (4) and the main fire cavity (2) share an 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).

2. The burner fire cover (100) according to claim 1, characterized in that, The upper part of the ignition cavity (4) is in communication with the ignition hole (3), and the bottom of the ignition cavity (4) is in communication with the ejector pipe (201).

3. Burner comprising a burner head (200), an ignition pin (300) and a burner cap (100) according to claim 1 or 2, said burner cap (100) being arranged on said burner head (200), said injection tube (201) being arranged inside said burner head (200), said ignition pin (300) being arranged outside said ignition hole (3), characterized in that, The burner further comprises a wind speed sensor (400) and a pressure sensor (500), the wind speed sensor (400) is arranged on the outer side of the burner close to the ignition needle (300), and the pressure sensor (500) is arranged in the gas pipeline (600) in communication with the ejector pipe (201).

4. Gas hob, characterized in that The burner comprises the burner as claimed in claim 3.

5. The ignition control method of the gas hob according to claim 4, characterized in that, The ignition control method of the gas stove comprises: The wind speed sensor (400) obtains the real-time wind speed V around the burner, and the pressure sensor (500) obtains the pressure P1 in the gas pipeline (600); According to the obtained real-time wind speed V and pressure P1, the gas nozzle (700) flow and the damper (800) opening degree are adjusted to make the air-fuel flow meet the conditions suitable for the current ignition; The igniter ignites.

6. The ignition control method of the gas stove according to claim 5, characterized in that, According to the obtained real-time wind speed V and pressure P1, the gas nozzle (700) flow and the damper (800) opening degree are adjusted, including that the gas nozzle (700) flow is opened at A=80(0.75+V / 0.4)m / s, and the damper (800) opening degree is supplied with gas for the ignition of the gas stove at B1=50%(1-0.5(P1 / 2000+V / 0.1-2)).

7. The ignition control method of a gas hob according to claim 5, characterized in that, After the igniter ignites, it further comprises: It is judged whether the gas stove ignites successfully within a first preset time, if yes, the gas stove enters a continuous use state; if not, the ignition pulse is extended for a second preset time.

8. The ignition control method of the gas stove according to claim 7, characterized in that, The first preset time is 5s, and the second preset time is 3s.

9. The ignition control method of the gas stove according to claim 7, characterized in that, After successful ignition, it is judged whether the user changes the fire power position, if yes, the damper (800) opening degree is adjusted according to the demand of the fire power position to match the air-fuel demand of the main fire hole (1); if not, the gas is supplied to the burner at the current gas nozzle (700) flow and damper (800) opening degree.

10. The ignition control method of the gas stove according to claim 9, characterized in that, According to the fire power grade requirement, the damper (800) opening degree is adjusted, including: the pressure sensor (500) acquires the pressure P2 in the gas pipeline (600), at this time, the damper (800) opening degree is adjusted to B2=50% (1-0.5(P2 / 2000-1)).

Images