A safety premix gas hob

Abstract

The utility model discloses a kind of safety premix gas stove plate, outer furnace body is provided on furnace plate bottom plate, first annular cavity is formed between outer furnace body and first inner furnace body;Flameout detection needle and ignition needle are arranged in first annular cavity, the upper half of first inner furnace body is provided with several nozzle holes;Several fire spraying assemblies are arranged between outer furnace body and first inner furnace body, each fire spraying assembly is one-to-one corresponding with each nozzle hole;Second inner furnace body is arranged on the inner side of first inner furnace body, second annular cavity is formed between first inner furnace body and second inner furnace body, annular plate is arranged above second annular cavity.The utility model has the beneficial effects of reducing heat loss, reducing pollution to indoor and outdoor environment, protecting the health of operator, responding more quickly, protecting more reliably, avoiding fire contact with furnace body periphery flammable component to cause fire, ensuring heating uniformity, simple structure, low manufacturing cost and not easy to damage.

Description

Technical Field

[0001] This utility model relates to a gas stove plate, and more specifically, to a safe premixed gas stove plate. Background Technology

[0002] In the fields of catering, cooking, and industrial heating, gas-fired heating plates are core heating equipment, and their combustion efficiency and safety have always been key concerns in the industry. Existing heating plate structures often employ a diffusion combustion method, where gas and air mix directly in the combustion zone rather than being pre-mixed evenly. In this combustion mode, the gas-air mixing ratio is difficult to control precisely, often resulting in insufficient or excessive air supply. Insufficient air leads to incomplete combustion, producing large amounts of unburned combustible components, significantly reducing thermal efficiency and increasing harmful gas emissions. Excessive air, on the other hand, carries away large amounts of unburned combustible components. The heat generated by incomplete combustion further exacerbates energy waste. Actual test data shows that traditional gas-fired stoves consume significantly more gas per hour than new premixed stoves, with an energy waste rate exceeding 45%. Long-term use will substantially increase users' gas costs. Furthermore, due to incomplete combustion, traditional gas-fired stoves produce large amounts of harmful exhaust gases during operation, such as carbon monoxide, nitrogen oxides, and unburned hydrocarbons. Industry testing data indicates that traditional gas-fired stoves typically emit 5000-6000 kcal / kg of exhaust gases. If these gases are directly released indoors or into the atmosphere, they will not only pollute the environment but also pose health risks to operators. This poses a serious threat to health, especially in poorly ventilated kitchens or industrial workshops, easily leading to carbon monoxide poisoning and other safety accidents, failing to meet the stringent environmental regulations for low-altitude emissions. Furthermore, the safety mechanisms of traditional gas stoves are relatively simple, relying mainly on manual monitoring or simple flameout protection devices. The flame-emitting components of traditional stoves are dispersed, and the ignition device can only act on a localized area, easily resulting in some flame-emitting components failing to ignite. Unburned gas can leak directly, increasing the risk of explosion and poisoning. Even if initial ignition is successful, if airflow is interfered with during use (such as kitchen exhaust fans, door and window ventilation), localized... The flame is easily extinguished, and the flameout detection response of traditional stoves is slow, making it difficult to quickly cut off the gas supply and further expanding safety hazards. At the same time, traditional stoves lack effective flame guiding and protection structures, and the flame is easily affected by the external environment, causing it to deviate and drift. This not only leads to uneven heating, but may also cause the flame to come into direct contact with flammable parts around the stove (such as wooden cabinets and plastic pipes), causing fire accidents. Furthermore, the stove body structure of traditional stoves lacks effective heat insulation design, and a large amount of heat generated by combustion is lost to the outside of the stove body. This not only reduces thermal efficiency, but also causes the temperature around the stove body to be too high, which can easily burn operators and accelerate the aging and damage of surrounding equipment.

[0003] Therefore, those skilled in the art are dedicated to providing a safe premixed gas furnace plate that can effectively solve the above-mentioned technical problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a safe premixed gas furnace plate, including a furnace plate bottom plate, on which an exhaust hole and a bottom plate air inlet are provided, an outer furnace body is provided on the furnace plate bottom plate, and a first inner furnace body is provided on the inner side of the outer furnace body, forming a first annular cavity between the outer furnace body and the first inner furnace body.

[0005] The first annular cavity is provided with a flameout detection needle and an ignition needle, which are inserted into the outer furnace body and detachably connected to the furnace plate bottom.

[0006] The upper half of the first inner furnace body is provided with a number of nozzle holes; a number of flame-spraying components are provided between the outer furnace body and the first inner furnace body, and a guide plate connected to the upper end of the outer furnace body is provided at each of the two adjacent flame-spraying components. Each of the guide plates is arranged in a circular array around the center line of the furnace plate bottom and is located on the outside of each flame-spraying component.

[0007] Each of the flame-spraying components is provided in a one-to-one correspondence with each of the nozzle holes; a second inner furnace body is provided on the inner side of the first inner furnace body, and a second annular cavity is formed between the first inner furnace body and the second inner furnace body, and an annular plate is provided above the second annular cavity.

[0008] Furthermore, the lower ends of the flameout detection needle and the ignition needle are inserted through the bottom plate of the furnace tray and positioned by locking nuts.

[0009] Furthermore, the outer furnace body includes an annular positioning part, and an annular extension part is provided on the inner side of the upper end of the annular positioning part. The upper half of the flameout detection needle and the ignition needle are both inserted through the annular extension part, and the fire guide plate is provided on the annular extension part.

[0010] The inner side of the annular extension is connected to the upper end of the annular inclined part, and the lower end of the annular inclined part is inclined inward to contact the outer wall of the first inner furnace body. The inner diameter gradually decreases from top to bottom. The annular positioning part, the annular extension part and the annular inclined part are made into an integral structure.

[0011] An installation area is formed between the annular inclined portion and the first inner furnace body. Several nozzle holes are located in the installation area. Each flame-spraying component is inclinedly arranged in the installation area, and its upper half extends out of the installation area.

[0012] Furthermore, the fire guide plate includes a first positioning block and a second positioning block arranged symmetrically to each other. The lower ends of the first positioning block and the second positioning block are simultaneously connected to the upper ends of the annular extension, and the upper ends of the first positioning block and the second positioning block are simultaneously connected to the top block. The first positioning block, the second positioning block and the top block are integrally formed.

[0013] Furthermore, the flame-spraying assembly includes a flame-spraying plate positioning member, in which a flame-spraying plate is disposed, and the lower half of the flame-spraying plate positioning member has an opening on its inner side that cooperates with the nozzle hole.

[0014] Furthermore, the furnace plate bottom is provided with a plurality of bottom plate fixing holes, and each bottom plate fixing hole is arranged in a circular array around the center line of the furnace plate bottom.

[0015] Furthermore, the exhaust port is located inside the second inner furnace body, and its centerline coincides with the centerlines of the outer furnace body, the first inner furnace body, and the second inner furnace body.

[0016] Furthermore, the bottom plate air inlet is opened on the bottom plate of the furnace tray and simultaneously passes through the first annular cavity and the second annular cavity, wherein a semi-circular tube is detachably provided at the point of passing through the first annular cavity.

[0017] Furthermore, it also includes an air duct, the two ends of which are detachably connected to the fan and the air inlet of the base plate, respectively; a gas pipeline is provided on the air duct, and a proportional valve body, a solenoid valve and a pressure reducing valve are provided on the gas pipeline.

[0018] Furthermore, both the second inner furnace body and the inner side of the annular plate are provided with heat-insulating rock wool.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, the annular inclined part of the outer furnace body and the first inner furnace body form a specific installation area. The flame-spraying component is inclined and the upper half extends out of the installation area. With the heat reflection effect of the guide plate, the loss of combustion heat to the outside of the furnace body is reduced. At the same time, the heat-insulating rock wool on the inner side of the second inner furnace body and the annular plate further reduces heat loss. The double protection improves thermal efficiency and ensures that the heating energy is more concentrated on the target area.

[0021] 2. This utility model, by means of a premixed combustion mode, ensures that the gas and air are evenly mixed and fully combusted, which greatly reduces the generation of harmful gases such as carbon monoxide, nitrogen oxides and unburned hydrocarbons. The amount of harmful exhaust gas emissions is significantly reduced, which not only meets the strict requirements of current environmental protection regulations for low-altitude emissions, but also reduces pollution to the indoor and outdoor environment and protects the health of operators. It is especially suitable for kitchens or industrial workshops with poor ventilation.

[0022] 3. This utility model is equipped with a flameout detection needle and an ignition needle (including a flashback detection function). After the ignition needle ignites the flame, if the flashback detection needle does not detect an open flame, it immediately triggers the solenoid valve to close the gas passage. The flameout detection needle monitors the flame status of each flame-emitting component in real time. Once a local unignition or accidental flameout occurs, the gas supply is cut off to avoid the risk of explosion and poisoning caused by unburned gas leakage. Compared with the single safety mechanism of traditional furnace plates, it responds more quickly and provides more reliable protection.

[0023] 4. The guide plate ensures combustion stability: The guide plate is distributed in a circular array on the outside of adjacent flame-spraying components. On the one hand, it can quickly transmit the flame ignited by the ignition needle to all flame-spraying components to ensure synchronous ignition and avoid gas leakage caused by local unignition. On the other hand, it can block external airflow interference such as kitchen exhaust fans and door and window ventilation to prevent flame deviation and drift. This not only prevents the flame from contacting flammable parts around the furnace body and causing a fire, but also ensures uniform heating.

[0024] 5. The furnace body insulation rock wool reduces heat conduction to the outside, avoids excessive temperature around the furnace body, and reduces the risk of burns to operators; at the same time, the exhaust port is located in the center of the second inner furnace body and coincides with the center line of each furnace body, ensuring that the small amount of exhaust gas generated by combustion is discharged smoothly and preventing internal accumulation that may cause safety hazards.

[0025] 6. This utility model achieves full mixing of gas and air before combustion, solving the problem of difficult-to-control mixing ratio in traditional diffusion combustion. In comparison, the energy waste rate of traditional furnace plates can reach more than 45%, while this utility model precisely controls the gas-air ratio through a proportional valve body and combines it with a fan to provide stable gas supply, making the gas combustion more complete and significantly reducing gas consumption. Long-term use can significantly reduce the user's gas costs. At the same time, it also has the advantages of simple structure, low manufacturing cost and not easy to damage. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0027] Figure 2 This is a structural diagram of the present invention without the second inner furnace body and annular plate, etc.

[0028] Figure 3 This is a schematic diagram of the structure of this utility model without the external furnace body installed.

[0029] Figure 4 yes Figure 3 A schematic diagram of the structure without the flamethrower assembly installed.

[0030] Figure 5 yes Figure 3 A schematic diagram of the structure without the semicircular tube installed.

[0031] Figure 6 yes Figure 5 A schematic diagram of the structure before the first inner furnace body is installed.

[0032] Figure 7 This is a first cross-sectional structural schematic diagram of the present invention.

[0033] Figure 8 yes Figure 7 A schematic diagram of a structure without a flame-throwing component.

[0034] Figure 9 This is a structural diagram of the flamethrower assembly.

[0035] Figure 10 This is a second cross-sectional view of the present invention.

[0036] Figure 11 This is a schematic diagram of the structure of the fire guide plate in this utility model.

[0037] Figure 12 This is a schematic diagram of the flame-throwing component in this utility model.

[0038] Figure 13 This is a three-dimensional structural diagram of the present invention used in conjunction with components such as fans and air ducts.

[0039] Figure 14 yes Figure 13 Another three-dimensional structural diagram.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 1. Pressure reducing valve; 2. Solenoid valve; 3. Proportional valve body; 4. Gas pipeline; 5. Fan; 7. Air pipeline; 8. Furnace base plate; 9. Guide plate; 9a. First positioning block; 9b. Second positioning block; 9c. Top block; 11. First annular cavity; 13. Annular plate; 14. Flameout detection needle; 15. Base plate fixing hole; 20. Exhaust hole; 21. Ignition needle; 22. Second annular cavity; 23. Nozzle hole; 24. Base plate air inlet; 101. Outer furnace body; 101a. Annular positioning part; 101b. Annular extension part; 101c. Annular inclined part; 102. First inner furnace body; 103. Flame-spraying assembly; 103a. Flame-spraying plate positioning part; 103b. Flame-spraying plate; 103c. Opening; 105. Second inner furnace body; 106. Locking nut; 108. Installation area; 200. Semicircular tube. Detailed Implementation

[0042] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0044] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0045] like Figures 1 to 14 As shown, a safe premixed gas stove plate includes a stove plate bottom plate 8, on which an exhaust hole 20 and a bottom plate air inlet 24 are provided. An outer stove body 101 is provided on the stove plate bottom plate 8, and a first inner stove body 102 is provided on the inner side of the outer stove body 101. A first annular cavity 11 is formed between the outer stove body 101 and the first inner stove body 102.

[0046] The first annular cavity 11 is provided with a flameout detection needle 14 and an ignition needle 21. The flameout detection needle 14 and the ignition needle 21 are inserted into the outer furnace body 101 and are detachably connected to the furnace bottom plate 8.

[0047] The upper half of the first inner furnace body 102 is provided with a plurality of nozzle holes 23; a plurality of flame-spraying components 103 are provided between the outer furnace body 101 and the first inner furnace body 102, and a guide plate 9 connected to the upper end of the outer furnace body 101 is provided at each of two adjacent flame-spraying components 103. Each of the guide plates 9 is arranged in a circular array around the center line of the furnace bottom plate 8 and is located outside each of the flame-spraying components 103.

[0048] Each of the flame-spraying components 103 is provided in a one-to-one correspondence with each of the nozzle holes 23; a second inner furnace body 105 is provided on the inner side of the first inner furnace body 102, and a second annular cavity 22 is formed between the first inner furnace body 102 and the second inner furnace body 105, and an annular plate 13 is provided above the second annular cavity 22.

[0049] The lower ends of the flameout detection needle 14 and the ignition needle 21 are inserted into the bottom plate 8 of the furnace tray and positioned by the locking nut 106.

[0050] The outer furnace body 101 includes an annular positioning part 101a, and an annular extension part 101b is provided on the inner side of the upper end of the annular positioning part 101a. The upper half of the flameout detection needle 14 and the ignition needle 21 are both inserted on the annular extension part 101b, and the fire guide plate 9 is provided on the annular extension part 101b.

[0051] The inner side of the annular extension 101b is connected to the upper end of the annular inclined part 101c. The lower end of the annular inclined part 101c is inclined inward and contacts the outer wall of the first inner furnace body 102. The inner diameter gradually decreases from top to bottom. The annular positioning part 101a, the annular extension 101b and the annular inclined part 101c are made into an integral structure.

[0052] An installation area 108 is formed between the annular inclined portion 101c and the first inner furnace body 102. A plurality of nozzle holes 23 are located in the installation area 108. Each of the flame-spraying components 103 is inclinedly arranged in the installation area 108, and its upper half extends out of the installation area 108.

[0053] The fire guide plate 9 includes a first positioning block 9a and a second positioning block 9b arranged symmetrically to each other. The lower ends of the first positioning block 9a and the second positioning block 9b are simultaneously connected to the upper ends of the annular extension 101b, and the upper ends of the first positioning block 9a and the second positioning block 9b are simultaneously connected to the top block 9c. The first positioning block 9a, the second positioning block 9b and the top block 9c are integrally formed structures.

[0054] In this utility model, the fire guide plate 9 mainly has the following functions:

[0055] 1. The guide plates 9 are arranged in a circular array around the center line of the furnace bottom plate 8 and precisely correspond to the gap positions of adjacent flame-spraying components 103. When the ignition needle 21 ignites the premixed gas of the first or partial flame-spraying component 103, the guide plates 9 can quickly transfer the open flame to the remaining unignited flame-spraying components 103 through their own thermal conductivity and flame guiding structure, ensuring that all flame-spraying components are ignited synchronously, avoiding problems such as local flameout and delayed ignition, and ensuring the uniformity of combustion of the entire furnace.

[0056] 2. The guide plate 9 is installed on the annular extension 101b of the outer furnace body 101. Its position is higher than the flame end of the flame-spraying assembly 103, which can form a flame bridging effect. Even if the premixed gas concentration of individual flame-spraying assemblies fluctuates briefly, the flame transmitted by the guide plate can continue to ignite, reducing the risk of single-point flameout.

[0057] 3. The fire guide plate 9 in this utility model adopts an integrated structure of the first positioning block 9a, the second positioning block 9b, and the top block 9c, with an overall symmetrical inverted U-shaped outline. It works in conjunction with the outer furnace body 101 and the flame-spraying assembly 103 to form a relatively closed local combustion area. On the one hand, it can block external airflow such as kitchen ambient wind from interfering with the flame, preventing the flame from being blown off or extinguished, and maintaining combustion stability. On the other hand, its metal material combined with the overall structure of the furnace body suggests that it can help reflect heat, reduce the loss of heat to the outside of the furnace body during combustion, and indirectly improve thermal efficiency.

[0058] 4. Indirectly reduces the risk of gas leakage. Without the ignition deflector plate 9, some flame-spraying components may fail to ignite. In this case, the unburned gas will leak directly. Although the flameout detection needle 14 can detect the absence of an open flame and trigger the solenoid valve to close, the presence of the ignition deflector plate can prevent local unignition from occurring in advance, reducing safety hazards from the source. Even if some flame-spraying components accidentally extinguish, the ignition deflector plate can quickly reignite the flame through adjacent flames, reducing the trigger frequency of flameout, gas leakage, and solenoid valve closure, and improving the stability of use.

[0059] In summary, the fire guide plate 9 in this utility model is not simply a flame guide, but a key component connecting ignition, combustion, and safety. Through the dual functions of flame transmission and environmental optimization, it not only ensures combustion efficiency but also indirectly enhances the safety performance of the furnace plate.

[0060] The flame-spraying assembly 103 includes a flame-spraying plate positioning member 103a, in which a flame-spraying plate 103b is disposed, and the lower half of the flame-spraying plate positioning member 103a has an opening 103c on its inner side that cooperates with the nozzle hole 23.

[0061] The furnace base plate 8 is provided with a plurality of base plate fixing holes 15, and the base plate fixing holes 15 are arranged in a circular array around the center line of the furnace base plate 8.

[0062] The exhaust port 20 is located inside the second inner furnace body 105, and its center line coincides with the center line of the outer furnace body 101, the first inner furnace body 102, and the second inner furnace body 105.

[0063] The bottom plate air inlet 24 is opened on the bottom plate 8 of the furnace tray and simultaneously passes through the first annular cavity 11 and the second annular cavity 22. A semi-circular tube 200 is detachably provided at the point of passing through the first annular cavity 11.

[0064] It also includes an air duct 7, the two ends of which are detachably connected to the fan 5 and the air inlet 24 of the bottom plate, respectively; a gas pipe 4 is provided on the air duct 7, and a proportional valve body 3, a solenoid valve 2 and a pressure reducing valve 1 are provided on the gas pipe 4. The inner side of the second inner furnace body 105 and the inner side of the annular plate 13 are both provided with heat-insulating rock wool.

[0065] The optimal working principle of this utility model is as follows:

[0066] Natural gas first enters the pipeline through the inlet of pressure reducing valve 1. Pressure reducing valve 1 can stabilize the gas input pressure and avoid pressure fluctuations affecting combustion stability. After pressure stabilization, the gas enters solenoid valve 2, which is responsible for the automatic opening and closing of the gas passage. Then the gas flows through proportional valve body 3. When the gas flow reaches the set value, proportional valve body 3 sends a signal to solenoid valve 2 to control it to close automatically, thereby achieving precise control of gas flow.

[0067] Gas pipeline 4 connects the pressure-controlled and quantity-regulated gas to air pipeline 7, forming a mixing passage for gas and air. Fan 5 starts and supplies air into air pipeline 7, where air and gas are fully mixed to produce a premixed gas of uniform concentration. Air pipeline 7 is connected to the bottom plate air inlet 24 of the furnace. The premixed gas enters the furnace through the bottom plate air inlet 24, and only the premixed gas is allowed to enter the second annular cavity 22. The stored premixed gas is delivered to the flame zone through nozzle orifice 23. Both the second inner furnace body 105 and the inner side of the annular plate 13 are provided with heat-insulating rock wool, which can reduce heat loss and ensure stable cavity temperature. The flame-spraying plate positioning component 103a is evenly welded to the outer side of the second annular cavity 22 on the outer side of the nozzle hole 23. The flame-spraying plate 103b is installed on the flame-spraying plate positioning component 103a. The opening 103c on the flame-spraying plate positioning component 103a is precisely aligned with the nozzle hole 23 to receive the premixed gas. The ignition needle 21 is activated, and the ignition needle releases an electric spark to ignite the flame-spraying plate 103a. The premixed gas at 3b is used for ignition. In this invention, there are two ignition needles 21, one for ignition and the other for flashback detection. If the flashback detection needle does not detect an open flame after the ignition needle 21 ignites the flame, it indicates that the ignition has failed or the flame has been accidentally extinguished. In this case, a signal is immediately sent to the solenoid valve 2 to control it to automatically close the air inlet and cut off the gas supply to prevent unburned gas from leaking. The flameout detection needle 14 installed on the first annular cavity 11 monitors the flame status in real time. If other flame-spraying plates 10 fail to ignite or are accidentally extinguished after ignition, resulting in incomplete combustion of the gas, and the flameout detection needle 14 does not detect an open flame, a signal is also sent to the solenoid valve 2 to close the air inlet, further ensuring safe use. A small amount of exhaust gas generated during combustion is discharged through the exhaust hole 20 opened on the bottom plate 8 of the furnace. The exhaust hole 20 is located inside the second inner furnace body 105 and coincides with the center line of the outer furnace body 101, the first inner furnace body 102, and the second inner furnace body 105 to ensure smooth discharge of exhaust gas and avoid internal accumulation.

[0068] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A safety premix gas hob, characterised in that: The furnace includes a bottom plate (8), on which an exhaust hole (20) and a bottom plate air inlet (24) are provided. An outer furnace body (101) is provided on the bottom plate (8), and a first inner furnace body (102) is provided on the inner side of the outer furnace body (101). A first annular cavity (11) is formed between the outer furnace body (101) and the first inner furnace body (102). The first annular cavity (11) is provided with a flameout detection needle (14) and an ignition needle (21). The flameout detection needle (14) and the ignition needle (21) are inserted into the outer furnace body (101) and are detachably connected to the furnace plate bottom plate (8). The upper half of the first inner furnace body (102) is provided with a number of nozzle holes (23); a number of flame-spraying components (103) are provided between the outer furnace body (101) and the first inner furnace body (102), and a guide plate (9) connected to the upper end of the outer furnace body (101) is provided at each of the two adjacent flame-spraying components (103). Each guide plate (9) is arranged in a circular array around the center line of the furnace bottom plate (8) and is located on the outside of each flame-spraying component (103). Each of the flame-spraying components (103) is provided in a one-to-one correspondence with each of the nozzle holes (23); a second inner furnace body (105) is provided on the inner side of the first inner furnace body (102), and a second annular cavity (22) is formed between the first inner furnace body (102) and the second inner furnace body (105), and an annular plate (13) is provided above the second annular cavity (22).

2. The safety premixed gas furnace plate as described in claim 1, characterized in that: The lower ends of the flameout detection needle (14) and the ignition needle (21) are inserted into the bottom plate (8) of the furnace and positioned by locking nuts (106).

3. The safety premixed gas furnace plate as described in claim 2, characterized in that: The outer furnace body (101) includes an annular positioning part (101a), and an annular extension part (101b) is provided on the inner side of the upper end of the annular positioning part (101a). The upper half of the flameout detection needle (14) and the ignition needle (21) are both inserted through the annular extension part (101b), and the fire guide plate (9) is provided on the annular extension part (101b). The inner side of the annular extension (101b) is connected to the upper end of the annular inclined part (101c). The lower end of the annular inclined part (101c) is inclined inward and contacts the outer wall of the first inner furnace body (102). The inner diameter gradually decreases from top to bottom. The annular positioning part (101a), the annular extension (101b) and the annular inclined part (101c) are made into an integral structure. An installation area (108) is formed between the annular inclined portion (101c) and the first inner furnace body (102). A plurality of nozzle holes (23) are located in the installation area (108). Each flame-spraying component (103) is inclinedly arranged in the installation area (108), and its upper half extends out of the installation area (108).

4. The safety premixed gas furnace plate as described in claim 3, characterized in that: The fire guide plate (9) includes a first positioning block (9a) and a second positioning block (9b) arranged symmetrically to each other. The lower ends of the first positioning block (9a) and the second positioning block (9b) are connected to the upper ends of the annular extension (101b), and the upper ends of the first positioning block (9a) and the second positioning block (9b) are connected to the top block (9c). The first positioning block (9a), the second positioning block (9b) and the top block (9c) are integrally formed.

5. A safety premix gas hob as claimed in claim 4, characterised in that: The flame-spraying assembly (103) includes a flame-spraying plate positioning member (103a), in which a flame-spraying plate (103b) is provided, and the lower half of the flame-spraying plate positioning member (103a) has an opening (103c) that cooperates with the nozzle hole (23).

6. A safety premix gas hob as claimed in claim 5, characterised in that: The furnace base plate (8) is provided with a plurality of base plate fixing holes (15), and each of the base plate fixing holes (15) is arranged in a circular array around the center line of the furnace base plate (8).

7. A safety premix gas hob as claimed in claim 6, characterised in that: The exhaust port (20) is located inside the second inner furnace body (105), and its center line coincides with the center lines of the outer furnace body (101), the first inner furnace body (102), and the second inner furnace body (105).

8. The safety premixed gas cooker pan as described in claim 7, characterized in that: The bottom plate air inlet (24) is opened on the bottom plate (8) of the furnace tray and simultaneously passes through the first annular cavity (11) and the second annular cavity (22), wherein a semi-circular tube (200) is detachably provided at the point of passing through the first annular cavity (11).

9. The safety premixed gas cooker pan as described in any one of claims 1 to 8, characterized in that: It also includes an air duct (7), the two ends of which are detachably connected to the fan (5) and the bottom plate air inlet (24), respectively; a gas duct (4) is provided on the air duct (7), and a proportional valve body (3), a solenoid valve (2) and a pressure reducing valve (1) are provided on the gas duct (4).

10. A safety premix gas hob as claimed in claim 1, characterized in that: The inner side of the second inner furnace body (105) and the inner side of the annular plate (13) are both provided with heat-insulating rock wool.

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