Ignition structure

Abstract

The utility model provides an ignition structure which comprises a first electrode, a second electrode, a base and a flame sensor. The first electrode and the second electrode are oppositely arranged on the base; the flame sensor is arranged at the position, close to the second electrode, of the first electrode; the first electrode is provided with a first ignition end of the flame sensor and is spaced from a second ignition end of the second electrode by a preset distance. The problem that gas still inflows after flames are extinguished is effectively solved, the flame sensor is arranged, signals are detected and then fed back, and the gas channel can be closed when the signals are detected.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an ignition structure. Background Art

[0002] An ignition structure is a device used to initiate the combustion process, into which gas is introduced to generate a spark at this device.

[0003] During the use of industrial stoves, there are two existing ignition structures. One is to use a single electrode and a metal cap to generate an electric spark, and the other is to use a double electrode to generate an arc according to the voltage difference on the electrodes, thereby igniting.

[0004] However, during actual use, regardless of which ignition structure, there is a situation where the fire goes out but the gas still continuously flows into the ignition structure, which poses a safety hazard and causes personal and property insecurity. Summary of the Utility Model

[0005] In view of the above problems, the present utility model is proposed to provide an ignition structure that overcomes the above problems or at least partially solves the above problems.

[0006] To solve the above problems, the present utility model discloses an ignition structure, including: a first electrode, a second electrode, a base, and a flame sensor; the first electrode and the second electrode are oppositely arranged on the base; the flame sensor is arranged at a position on the first electrode close to the second electrode; a first ignition end of the flame sensor arranged on the first electrode and a second ignition end of the second electrode are spaced apart by a preset distance.

[0007] Further, the base is provided with an ignition area for gas input; the first ignition end and the second ignition end are arranged in the ignition area.

[0008] Further, both the first ignition end and the second ignition end are L-shaped.

[0009] Further, the ignition structure further includes a delivery cap for transporting gas; the delivery cap is fixedly installed in the ignition area, and the gas outlet is directly opposite to the first electrode and the second electrode.

[0010] Further, the base is further provided with a card slot.

[0011] Further, the first electrode and the second electrode are respectively snap-connected to the base.

[0012] The present utility model has the following advantages:

[0013] A flame sensor is provided, which can detect the state where gas is still flowing in after the flame goes out. Through the signal of the flame sensor, this signal is directly transmitted to the switch controlling the gas, and then the gas passage is directly closed to avoid potential safety hazards. Description of the Drawings

[0014] Figure 1 is a schematic structural view of an embodiment of an ignition structure of the present utility model;

[0015] Figure 2 is a schematic structural view of the base of an embodiment of an ignition structure of the present utility model;

[0016] Figure 3 is a schematic structural view of the first electrode and the second electrode of an embodiment of an ignition structure of the present utility model.

[0017] In the figure: 1, the first electrode; 2, the second electrode; 3, the base; 4, the flame sensor; 5, the delivery cap. Detailed Embodiment

[0018] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Embodiment 1

[0020] Refer to Figure 1 , which shows a schematic structural view of an ignition structure of the present utility model. Specifically, it may include: a first electrode 1, a second electrode 2, a base 3, and a flame sensor 4; the first electrode 1 and the second electrode 2 are oppositely arranged on the base 3. It should be noted that the opposite arrangement is to facilitate the generation of an electric arc between the first electrode 1 and the second electrode under high voltage in the subsequent process, so as to ignite the gas.

[0021] The flame sensor 4 is disposed on the first electrode 1 near the second electrode 2. It should be noted that the flame sensor 4 is disposed on the first electrode 1 near the second electrode 2, and it can be in the area near the second electrode 2. The flame sensor 4 is used to detect whether there is a flame in the area where the first electrode 1 is located. Moreover, it includes but is not limited to being disposed on the first electrode 1, and can also be only disposed on the second electrode 2, or the flame sensor 4 can be disposed on both the first electrode 1 and the second electrode 2. Preferably, one flame sensor is used, as one already achieves the required effect and saves costs. It should also be added that the flame (infrared) sensor is a sensor that is particularly sensitive to flames. The infrared receiving tube has a PN junction with infrared light-sensitive characteristics inside, which belongs to a photosensitive diode, but it only responds to infrared light. When there is no infrared light, the photosensitive tube is not conducting. When there is infrared light, the photosensitive tube conducts to form a photocurrent, and within a certain range, the current increases with the increase in the intensity of the infrared light. It can well receive the infrared light signal with a wavelength of 940 nm emitted by the infrared light-emitting diode, and cannot receive light of other wavelengths, thus ensuring the accuracy and sensitivity of the reception and being able to detect the flame.

[0022] The first ignition end of the flame sensor disposed on the first electrode is spaced apart from the second ignition end of the second electrode by a preset distance, and an electric arc is generated between the first ignition end and the second ignition end. It should be added that the first electrode 1 and the second electrode are externally connected to a control circuit, and are electrically connected to the circuit through the non-ignition ends of the first electrode 1 and the second electrode 2. After connecting the circuit, a voltage difference is generated at the proximal ends of the first electrode 1 and the second electrode 2, so an electric arc can be generated after the circuit is powered on, thereby further igniting the gas and facilitating the generation of an electric arc better. The first ignition end and the second ignition end are spaced apart by a preset distance to prevent the failure to generate an electric arc and the inability to ignite the gas due to too large a spacing. Secondly, the flame sensor 4 is electrically connected to the induction circuit. When the flame sensor 4 detects the preset information, the induction circuit issues an instruction to stop the supply of gas.

[0023] It should be noted that the induction circuit includes a first switch, and the first switch directly controls whether to supply gas; the control circuit includes a second switch, and the second switch controls the circuit of the first electrode 1 and the second electrode 2 to control whether it is powered on, so as to generate an electric arc; the second switch and the first switch are integrated on a button. Referring to a gas stove, the button can be pressed and rotated. Pressing controls whether the circuit of the first electrode 1 and the second electrode 2 is closed, that is, the second switch, and rotating controls whether gas is supplied and the flow rate, that is, the first switch. The flame sensor 4 is associated with the first switch. When the flame sensor 4 detects a flame signal, this signal causes the second switch to close and open. Specifically, when no flame is detected, the flame sensor 4 emits a signal to cause the second switch to open, and the gas is not supplied, realizing automatic disconnection of the gas when not lit to avoid safety accidents. When a flame is detected, the flame sensor 4 does not emit a signal. Preferably, the first switch is provided with a return structure and automatically returns upon receiving the signal instruction of the flame sensor 4, which can be a spring or an elastic sheet.

[0024] In summary, when starting to work, press and rotate the button. The gas controlled by the first switch starts to be supplied, and the circuit of the first electrode 1 and the second electrode 2 controlled by the second switch starts to be powered on. The first electrode 1 and the second electrode 2 generate an electric arc under the voltage difference to ignite the supplied gas. At the same time, the flame sensor 4 starts to work to detect the flame. If the flame goes out due to an unknown reason, at this time the flame is out but the gas is still being supplied, there is a safety hazard at this time. The flame sensor 4 does not detect the flame signal, issues an alarm and sends a signal to the first switch to cause the first switch to close and the gas is not supplied.

[0025] Embodiment 2

[0026] Combined with Figure 2 , the base 3 is provided with an ignition area for gas input; the first electrode 1 and the second electrode 2 are arranged in the ignition area, which is convenient to directly direct the gas to the first electrode 1 and the second electrode 2, and then be ignited under the action of the electric arc generated by the first electrode 1 and the second electrode 2, which is convenient for making full use of the gas without waste. It should be noted that the base is an irregular cuboid, with an ignition area provided at the top and two additional holes. The first electrode 1 and the second electrode 2 are installed in the holes.

[0027] Furthermore, both the first electrode 1 and the second electrode 2 are L-shaped. This shape facilitates the generation of an electric arc more easily between the first electrode 1 and the second electrode 2 under a voltage difference. It should be noted that an electric arc is a free gas with high temperature and high electrical conductivity. The free electrons emitted from the cathode surface and the few original electrons between the contacts move towards the anode under the action of the electric field force and continuously collide with neutral particles on the way. As long as the movement speed of the electrons is high enough and the kinetic energy of the electrons is large enough, electrons may be ejected from the neutral particles to form free electrons and positive ions. This phenomenon is called collision ionization. The newly formed free electrons also move towards the anode at an accelerated speed and will similarly collide with neutral particles and cause ionization. The continuous result of collision ionization is that the space between the contacts is filled with electrons and positive ions, having a large conductivity; under the applied voltage, the medium is broken down and an electric arc is generated, and the circuit is conducted again. Of course, the positive and negative poles of the first electrode 1 and the second electrode 2 can be interchanged without affecting the formation of the electric arc. And the shorter the distance between the contacts of the first electrode 1 and the second electrode 2, the easier it is to form an electric arc, including but not limited to the L-shape, and it can also be in the shape of an inverted hook, etc.

[0028] Furthermore, the ignition structure further includes a delivery cap 5 for transporting gas; the delivery cap is fixedly installed in the ignition area, and the gas outlet is directly facing the first electrode 1 and the second electrode 2, which further concentrates the utilization of the gas and enables it to burn fully without waste.

[0029] Combined with Figure 3 , the base 3 is further provided with a card slot; the first electrode 1 and the second electrode 2 are respectively snap-connected to the base 3. It should be noted that the snap connection of the first electrode 1 and the second electrode 2 to the base 3 enables the first electrode 1 and the second electrode 2 to be fixed to the base 3 without moving, and when replacement is needed, disassembly can be achieved and it is easy to replace.

[0030] For further explanation, the snap connection can be to respectively provide a stepped structure on the first electrode 1 and the second electrode 2, which can enable the first electrode 1 and the second electrode 2 to be hung on the base 3 by gravity. When replacing, only take out and replace. Including but not limited to this, as long as it is convenient to replace, various connections are acceptable.

[0031] The ignition structure is arranged on the stove, and each component of the ignition structure is detachable. When replacing during daily use, it is simple and there is no need to replace this component, which saves costs.

[0032] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the said element.

[0033] The above has introduced in detail an ignition structure provided by the present utility model. Specific examples are used in this text to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An ignition structure, characterized in that: include: A first electrode, a second electrode, a base and a flame sensor; The first electrode and the second electrode are arranged on the base opposite to each other; The flame sensor is arranged on the first electrode near the second electrode; A first ignition end of the first electrode for arranging the flame sensor is spaced apart from a second ignition end of the second electrode by a preset distance.

2. The ignition structure according to claim 1, characterized in that: The base is provided with an ignition area for gas input; The first ignition end and the second ignition end are arranged in the ignition area.

3. The ignition structure according to claim 2, characterized in that: The first ignition end and the second ignition end are both L-shaped.

4. The ignition structure according to claim 3, characterized in that: The ignition structure also includes a delivery cap for transporting fuel gas; The delivery cap is fixedly installed in the ignition area, and the gas outlet faces the first electrode and the second electrode.

5. The ignition structure according to claim 1, characterized in that: The base is also provided with a card slot.

6. The ignition structure according to claim 5, characterized in that: The first electrode and the second electrode are respectively snap-connected to the base.

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