Combustor fire cover, combustor, gas cooker and ignition control method of gas cooker

Abstract

The invention discloses a burner fire cover, a burner, a gas cooker and an ignition control method of the gas cooker, 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 communicated with the main fire hole, the ignition hole is communicated with the main fire hole, the burner fire cover is further provided with at least one ignition cavity, the ignition cavity is communicated with the ignition hole, the ignition cavity and the main fire cavity share one injection pipe, and the ignition cavity is closer to the air inlet end of the injection pipe 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 gas pipeline communicated with the injection pipe. According to the structure, stable ignition can be preferentially guaranteed, then main fire gas supply is matched, and the air-fuel flow needed by ignition is adjusted based on the current ignition environment, so that the ignition success rate of the gas cooker is increased, the influence of factors adverse to ignition is reduced, and the user experience feeling is improved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a burner fire cover, a burner, a gas cooker and an ignition control method thereof. Background Art

[0002] Gas stoves are one of the kitchen appliances used for cooking in daily family life. The fire cover of gas stoves currently on the market is generally provided with an ignition hole and a main fire hole, both of which are connected to the mixing chamber inside the fire cover and share a path of gas in the mixing chamber.

[0003] At present, the burners of household gas stoves generally use ignition needles to discharge high voltage to ignite the gas. The ignition needle is generally set near the ignition hole of the gas stove. When igniting, the discharge end of the ignition needle generates an instantaneous high potential, generating an electric spark, thereby igniting the gas ejected from the ignition hole to achieve the ignition of the gas stove. When the user is using it, the kitchen environment factors will fluctuate. For example, the gas pressure fluctuates relatively greatly, or the ambient wind will also have an adverse effect on ignition, which may cause the gas volume at the ignition hole of the fire cover of the gas stove to be unstable during use, resulting in ignition failure problems such as ignition hole flame separation, affecting the normal use of the user and poor experience.

[0004] Therefore, it is urgent to design a burner fire cover, a burner, a gas cooker and an ignition control method thereof to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a burner fire cover, a burner, a gas cooker and an ignition control method thereof, which can give priority to ensuring stable ignition and then match the main fire gas supply, thereby effectively improving the user experience.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A burner fire cover is provided with a main fire hole, a main fire cavity and an ignition hole, the main fire cavity is connected to the main fire hole, the ignition hole is connected to the main fire hole, and the burner fire cover is also provided with at least one ignition cavity, the ignition cavity is connected to the ignition hole, the ignition cavity and the main fire cavity share a common ejector tube, the ignition cavity is closer to the air inlet end of the ejector tube than the main fire cavity, and the volume of the ignition cavity is smaller than the volume of the main fire cavity.

[0008] As a preferred technical solution of the above-mentioned burner fire cover, the upper part of the ignition cavity is connected to the ignition hole, and the bottom of the ignition cavity is connected to the ejector tube.

[0009] To achieve this object, the present invention also adopts the following technical solutions:

[0010] A burner comprises a burner head, an ignition needle and the above-mentioned burner fire cover, wherein the burner fire cover is arranged on the burner head, the ejector tube is arranged inside the burner head, the ignition needle is arranged outside the ignition hole, and the burner also comprises a wind speed sensor and a pressure sensor, wherein the wind speed sensor is arranged outside the burner near the ignition needle, and the pressure sensor is arranged inside a gas pipeline connected to the ejector tube.

[0011] To achieve this object, the present invention also adopts the following technical solutions:

[0012] A gas cooker comprising the above-mentioned burner.

[0013] To achieve this object, the present invention also adopts the following technical solutions:

[0014] The ignition control method of the gas cooker as described above comprises:

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

[0016] According to the real-time wind speed V and pressure P1, the gas nozzle flow and air door opening are adjusted to make the air-fuel flow reach the conditions suitable for the current ignition;

[0017] The igniter ignites.

[0018] As a preferred technical solution of the ignition control method of the above-mentioned gas cooker, adjusting the gas nozzle flow and the air door opening according to the acquired real-time wind speed V and pressure P1 includes: the gas nozzle flow is opened at A=80(0.75+V / 0.4)m / s, and the air door opening is B1=50%(1-0.5(P1 / 2000+V / 0.1-2)) to supply gas for ignition of the gas cooker.

[0019] As a preferred technical solution of the ignition control method of the gas cooker, after the igniter ignites, the method further includes:

[0020] It is determined whether the gas cooker is ignited successfully within the first preset time. If so, the gas cooker enters a continuous use state; if not, the ignition pulse is extended for a second preset time.

[0021] As a preferred technical solution of the ignition control method of the above-mentioned gas cooker, the first preset time is 5 seconds; the second preset time is 3 seconds.

[0022] As the preferred technical solution of the ignition control method of the above-mentioned gas stove, after successful ignition, it is determined whether the user changes the fire power level. If so, the air damper opening is adjusted according to the fire power level requirement to match the air-fuel volume requirement of the main fire hole; if not, gas is supplied to the burner with the current gas nozzle flow and air damper opening.

[0023] As a preferred technical solution for the ignition control method of the above-mentioned gas cooker, adjusting the air damper opening according to the fire power level requirement includes: the pressure sensor obtains the pressure P2 in the gas pipeline, and the air damper opening is adjusted to B2=50% (1-0.5(P2 / 2000-1)).

[0024] The burner fire cover disclosed in the present invention is provided with a main fire hole, a main fire cavity and an ignition hole, the main fire cavity is connected to the main fire hole, the ignition hole is connected to the main fire hole, and the burner fire cover is also provided with at least one ignition cavity, the ignition cavity is connected to the ignition hole, the ignition cavity and the main fire cavity share a common ejector tube, the ignition cavity is closer to the air inlet end of the ejector tube than the main fire cavity, and the volume of the ignition cavity is smaller than that of the main fire cavity. This structure enables the gas to fill the ignition cavity first, so as to realize the priority supply of gas to the ignition cavity, thereby realizing the purpose of satisfying the ignition demand first and then satisfying the main fire demand, thereby improving the ignition success rate of the gas stove and effectively improving the user experience.

[0025] The present invention discloses a burner, a gas cooker and an ignition control method for the gas cooker. The burner includes a wind speed sensor and a pressure sensor. The wind speed sensor is arranged on the outside of the burner near the ignition needle, and the pressure sensor is arranged inside the gas pipeline connected to the ejector pipe. The wind speed sensor is arranged to detect the wind speed of the current ambient wind, and the pressure sensor is arranged in the gas pipeline to detect the pipeline pressure, so as to adjust the air-fuel flow required for ignition based on the current ignition environment, thereby improving the ignition success rate of the gas cooker and reducing the influence of factors unfavorable to ignition. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 It is a flow chart of an ignition control method of a gas cooker provided in a specific embodiment of the present invention.

[0028] In the figure:

[0029] 1. Main fire hole; 2. Main fire cavity; 3. Ignition hole; 4. Ignition cavity; 5. Fire transmission channel;

[0030] 100, burner fire cover; 200, furnace head; 201, ejector tube; 300, ignition needle; 400, wind speed sensor; 500, pressure sensor; 600, gas pipeline; 700, nozzle; 800, air damper; 900, switch button. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] This embodiment provides a gas cooker, which includes a burner. Figure 1 As shown, the burner includes a burner head 200, an ignition needle 300 and a burner fire cover 100. The burner fire cover 100 is arranged on the burner head 200, and an ejector tube 201 is arranged inside the burner head 200. The burner fire cover 100 is provided with a main fire hole 1, a main fire cavity 2 and an ignition hole 3. The main fire cavity 2 is connected to the main fire hole 1, and the ignition hole 3 is connected to the main fire hole 1. The ignition needle 300 is arranged close to the outside of the ignition hole 3.

[0038] The burner fire cover 100 in this embodiment is also provided with at least one ignition chamber 4, which is connected to the ignition hole 3, and the ignition chamber 4 and the main fire chamber 2 share a common 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 that of the main fire chamber 2. This structure enables the gas to fill the ignition chamber 4 first, so as to realize the priority supply of gas to the ignition chamber 4, thereby realizing the purpose of satisfying the ignition demand first and then satisfying the main fire demand, thereby improving the ignition success rate of the gas cooker and effectively improving the user experience.

[0039] Specifically, the upper part of the ignition cavity 4 is connected to the ignition hole 3, and the upper part of the main fire cavity 2 is connected to the main fire hole 1. The ignition hole 3 and the main fire hole 1 are both arranged to be inclined upward from the inside to the outside, and the two are arranged non-parallel, and the two are connected through the fire transmission channel 5. The bottom of the ignition cavity 4 and the bottom of the main fire cavity 2 are respectively connected to the ejector tube 201, and the structure is compact.

[0040] The burner in this embodiment further includes a wind speed sensor 400 and a pressure sensor 500. The wind speed sensor 400 is arranged on the outside of the burner near the ignition needle 300 to detect the wind speed of the current ambient wind. The pressure sensor 500 is arranged inside the gas pipeline 600 connected to the ejector tube 201 to detect the pipeline pressure. By arranging the wind speed sensor 400 and the pressure sensor 500, the air-fuel flow required for ignition can be adjusted based on the current ignition environment, suitable gas conditions can be provided for ignition, and the problems of instability or flameout caused by the influence of pipeline pressure and ambient wind on ignition can be solved, thereby improving the ignition success rate of the gas cooker.

[0041] This embodiment also provides an ignition control method for the gas cooker. Figure 2 As shown, the ignition control method of the gas cooker includes:

[0042] The gas cooker is turned on;

[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 flow of the gas nozzle 700 and the opening of the air door 800 according to the real-time wind speed V and pressure P1 obtained, so that the air-fuel flow reaches the conditions suitable for the current ignition;

[0046] The igniter ignites.

[0047] Specifically, adjusting the flow rate of the gas nozzle 700 and the opening of the damper 800 according to the acquired real-time wind speed V and pressure P1 includes: the flow rate of the gas nozzle 700 is opened at A=80(0.75+V / O.4)m / s, and the opening of the damper 800 is opened at B1=50%(1-0.5(P1 / 2000+V / 0.1-2)) to supply gas for ignition of the gas stove.

[0048] After the igniter ignites, the method further includes: determining whether the gas cooker is successfully ignited within a first preset time, if so, the gas cooker enters a continuous use state; if not, extending the ignition pulse for a second preset time.

[0049] In this embodiment, the first preset time is 5 seconds, and the second preset time is 3 seconds. 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 times.

[0050] After successful ignition, the burner enters a continuous use state. During this period, it is determined whether the user changes the fire level. If so, the damper 800 opening needs to be adjusted according to the fire level requirement to match the air-fuel volume requirement of the main fire hole 1; if not, gas is supplied to the burner at the current gas nozzle 700 flow rate and damper 800 opening.

[0051] Adjusting the opening of the damper 800 according to the fire power 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)).

[0052] The ignition control method of the gas cooker can adjust the flow of the nozzle 700 and the opening of the damper 800 according to the 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 flow of the nozzle 700 and the opening of the damper 800 are adjusted according to the fire gear requirements to match the air-fuel quantity requirements of the main fire hole 1. That is, it realizes the priority of ensuring stable ignition and then matching the main fire gas supply, which effectively improves the user experience.

[0053] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A burner fire cover (100), on which a main fire hole (1), a main fire cavity (2) and an ignition hole (3) are arranged, wherein the main fire cavity (2) is connected to the main fire hole (1), and the ignition hole (3) is connected to the main fire hole (1), characterized in that: At least one ignition chamber (4) is also provided on the burner fire cover (100); the ignition chamber (4) is connected to the ignition hole (3); the ignition chamber (4) and the main fire chamber (2) share a common 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).

2. The burner cap (100) according to claim 1, characterized in that: The upper portion of the ignition chamber (4) is connected to the ignition hole (3), and the bottom portion of the ignition chamber (4) is connected to the ejector tube (201).

3. A burner, comprising a burner head (200), an ignition needle (300) and a burner fire cover (100) according to claim 1 or 2, wherein the burner fire cover (100) is arranged on the burner head (200), the ejector tube (201) is arranged inside the burner head (200), and the ignition needle (300) is arranged on the outside of the 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 outside of the burner close to the ignition needle (300); and the pressure sensor (500) is arranged inside a gas pipeline (600) connected to the ejector tube (201).

4. A gas cooker, characterized in that: Comprising the burner as claimed in claim 3.

5. The ignition control method of a gas cooker according to claim 4, characterized in that: The ignition control method of the gas cooker 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 acquired real-time wind speed V and pressure P1, the flow rate of the gas nozzle (700) and the opening of the air door (800) are adjusted so that the air-fuel flow rate reaches a condition suitable for the current ignition; The igniter ignites.

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

7. The ignition control method of a gas cooker according to claim 5, characterized in that: After the igniter is ignited, it also includes: It is determined whether the gas cooker is ignited successfully within the first preset time. If so, the gas cooker enters a continuous use state; if not, the ignition pulse is extended for a second preset time.

8. The ignition control method of a gas cooker according to claim 7, characterized in that: The first preset time is 5 seconds; the second preset time is 3 seconds.

9. The ignition control method of a gas cooker according to claim 7, characterized in that: After successful ignition, it is determined whether the user has changed the fire level. If so, the air damper (800) opening is adjusted according to the fire level requirement to match the air-fuel volume requirement of the main fire hole (1); if not, gas is supplied to the burner at the current gas nozzle (700) flow rate and air damper (800) opening.

10. The ignition control method of a gas cooker according to claim 9, characterized in that: Adjusting the opening of the damper (800) according to the fire power 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)).

Images