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. The volume of the ignition cavity is smaller than that of the main fire cavity; a heating piece is arranged on the burner fire cover and arranged on the periphery of the main fire hole close to the ignition hole. 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 environmental humidity is high, which will have an adverse effect on the ignition. It may cause the gas stove to ignite unstably at the ignition hole of the fire cover during use, resulting in ignition failure problems such as ignition hole flame separation, affecting the normal use of the user and having a 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 improve the ignition success rate and effectively enhance 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 that of the main fire cavity; a heating element is provided on the burner fire cover, and the heating element is arranged around the main fire hole close to the ignition hole.

[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] As a preferred technical solution of the above-mentioned burner fire cover, the heating element is an annular structure, an annular groove is opened on the burner fire cover, and the heating element is embedded in the annular groove.

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

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

[0012] 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 humidity sensor and a pressure sensor, wherein the humidity 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.

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

[0014] To achieve this object, the present invention also adopts the following technical solutions:

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

[0016] To achieve this object, the present invention also adopts the following technical solutions:

[0017] The ignition control method of the gas cooker as described above comprises:

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

[0019] Determine whether the real-time ambient humidity n is greater than 50%, if so, start the heating element to heat for a first preset time, the first preset time being T=50(n-50%)s;

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

[0021] The igniter ignites.

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

[0023] As a preferred technical solution of the ignition control method of the gas cooker, after the igniter ignites, the method further includes:

[0024] It is determined whether the gas cooker is ignited successfully within the second preset time. If so, the gas cooker enters a continuous use state; if not, the ignition pulse is extended for a third preset time.

[0025] 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; if not, gas is supplied to the burner with the current gas nozzle flow and air damper opening.

[0026] 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)).

[0027] 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, and the ignition hole is connected to the main fire hole. The burner fire cover is also provided with at least one ignition cavity, which 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. The burner fire cover is provided with a heating element, which is arranged around the main fire hole near the ignition hole. This structure enables the gas to fill the ignition cavity first, so as to realize the priority of supplying 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.

[0028] The present invention discloses a burner, a gas cooker and an ignition control method for the gas cooker. The burner includes a humidity sensor and a pressure sensor. The humidity 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 tube. By arranging the humidity sensor for detecting the current environmental humidity and arranging the pressure sensor in the gas pipeline for detecting the pipeline pressure, it is realized to provide suitable gas conditions for ignition based on the current ignition environment, solve the problems of difficult ignition or unstable ignition causing flameout caused by the influence of pipeline pressure and environmental humidity, thereby improving the ignition success rate of the gas cooker and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 2It is a flow chart of an ignition control method of a gas cooker provided in a specific embodiment of the present invention.

[0031] In the figure:

[0032] 1. Main fire hole; 2. Main fire cavity; 3. Ignition hole; 4. Ignition cavity; 5. Fire transmission channel;

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

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 are not intended to be the only implementation method.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The burner in this embodiment further includes a humidity sensor 400 and a pressure sensor 500. The humidity sensor 400 is arranged on the outside of the burner near the ignition needle 300 to detect the current environmental humidity. 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 humidity sensor 400 and the pressure sensor 500, the air-fuel flow required for ignition can be adjusted based on the current ignition environment, and suitable gas conditions can be provided for ignition, so as to solve the problems of difficulty in ignition or flameout caused by unstable ignition due to the influence of pipeline pressure and environmental humidity, thereby improving the ignition success rate of the gas cooker.

[0044] The burner in this embodiment further includes a heating element 101, which is arranged around the main ignition hole 1 near the ignition hole 3. When the humidity sensor 400 detects that the humidity near the ignition hole 3 obviously has an adverse effect on ignition, the humidity is reduced to a condition suitable for ignition through the heating element 101, and then the ignition is started, thereby improving the ignition success rate. The heating element 101 can be specifically, but not limited to, a PTC heating element.

[0045] The heating element 101 may be an annular structure, and an annular groove is provided on the burner fire cover 100, and the heating element 101 is embedded in the annular groove. The heating element 101 may also be directly attached to the outer wall of the burner fire cover 100 or embedded in the outer wall of the burner fire cover 100. The specific structural form of the heating element 101 may be designed according to actual conditions.

[0046] This embodiment also provides an ignition control method for the above-mentioned gas cooker, which adjusts the flow of the nozzle 700 and the opening of the damper 800 according to the current environmental humidity and pipeline pressure obtained, and adds a heating element 101 for improving humidity, so that the air-fuel flow and humidity conditions reach the conditions 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 gear requirements to match the air-fuel quantity requirements of the main fire hole 1. That is, the air-fuel quantities of the ignition hole 3 and the main fire hole 1 are supplied separately, and the supply is refined to meet the ignition requirements first, and then meet the main fire requirements.

[0047] like Figure 2 As shown, the ignition control method of the gas cooker includes:

[0048] The gas cooker is turned on;

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

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

[0051] Determine whether the real-time ambient humidity n is greater than 50%. If so, start the heating element 101 to heat for the first preset time. If not, the controller adjusts the flow of the gas nozzle 700 and the opening of the damper 800 according to the real-time ambient humidity n and the pressure P1, so that the air-fuel flow reaches the condition suitable for the current ignition;

[0052] The igniter ignites.

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

[0054] The above-mentioned first preset time is T=50(n-50%)s. An environmental humidity sensor 400 is set. When the humidity is too high to be conducive to ignition, the heating element 101 is first used to reduce the influence of humidity, and then combined with the pipeline pressure, suitable gas conditions are provided for ignition, so as to solve the problems of difficult ignition or unstable ignition causing flameout caused by the influence of pipeline pressure and environmental humidity. Optionally, a voice alarm can also be set on the gas cooker. When it is detected that the environmental humidity n is greater than 50%, the voice alarm emits a buzzer or alarm sound to remind the user that the humidity is too high. On the one hand, the user can reduce the humidity around the burner by other methods. On the other hand, if the automatic start of the heating element 101 fails, it can also be started manually.

[0055] After the igniter ignites, the method further includes: determining whether the gas cooker is successfully ignited within the second preset time, if so, the gas cooker enters a continuous use state; if not, extending the ignition pulse for a third preset time.

[0056] In this embodiment, the second preset time is 5 seconds, and the third preset time is 3 seconds. 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, determine whether the user changes the fire level. If so, adjust the damper 800 opening according to the fire level requirement to match the air-fuel volume requirement of the main fire hole 1; if not, supply gas to the burner with the current gas nozzle 700 flow rate and damper 800 opening.

[0058] 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)).

[0059] 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 humidity and pipeline pressure, so that the air-fuel flow rate 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 ignition success rate and improves the user experience.

[0060] 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, 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: The burner fire cover (100) is also provided with at least one ignition chamber (4), 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); the burner fire cover is provided with a heating element (101), and the heating element (101) is arranged around the main fire hole (1) close to the ignition hole (3).

2. The burner cap 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. The burner fire cover according to claim 1, characterized in that: The heating element (101) is an annular structure, an annular groove is provided on the burner fire cover (100), and the heating element (101) is embedded in the annular groove.

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

5. A burner, comprising a burner head (200), an ignition needle (300) and a burner fire cover (100) according to any one of claims 1 to 4, 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 outside the ignition hole (3), characterized in that: The burner further comprises a humidity sensor (400) and a pressure sensor (500), wherein the humidity 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).

6. A gas cooker, characterized in that: Comprising the burner as claimed in claim 5.

7. The ignition control method of the gas cooker according to claim 6, characterized in that: The ignition control method of the gas cooker comprises: The humidity sensor (400) obtains the real-time environmental humidity n around the burner, and the pressure sensor (500) obtains the pressure P1 in the gas pipeline (600); Determining whether the real-time environmental humidity n is greater than 50%, and if so, starting the heating element (101) to heat for a first preset time, wherein the first preset time is T=50(n-50%)s; If not, adjusting the flow rate of the gas nozzle (700) and the opening of the air door (800) according to the real-time environmental humidity n and the pressure P1; The igniter ignites.

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

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

10. The ignition control method of a gas cooker according to claim 9, characterized in that: After successful ignition, it is determined whether the user changes the fire level. If so, the air door (800) opening is adjusted according to the fire level requirement; if not, gas is supplied to the burner at the current gas nozzle (700) flow rate and air door (800) opening.

11. The ignition control method of a gas cooker according to claim 10, 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)).

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