CN109990353B

CN109990353B - Flame-proof structure for top pot of stove

Info

Publication number: CN109990353B
Application number: CN201910168266.XA
Authority: CN
Inventors: 张跃虎
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-04-14
Anticipated expiration: 2039-03-06
Also published as: CN109990353A

Abstract

The invention provides a stove top pan flame-proof structure, which comprises a stove body, wherein a hearth is arranged in the stove body, a smoke hood is arranged above the hearth, and a fire vent is arranged at the back of the smoke hood and communicated with a chimney. A fire guide plate which inclines downwards is arranged above the fire discharge port; the bottom of the fire guide plate is positioned at a position close to the upper end of the hearth and far away from one side of an operator. Through setting up the mouth of releasing a fire at the petticoat pipe back, when jolting the pot, flame can be inhaled by the mouth of releasing a fire and draw, avoids the injection of flame to influence operator's normal operating. And also avoids the collection of the oil smoke influenced by the flame eruption. In the preferred scheme, the flame guide device between the upper part of the hearth and the pot overcomes the problem of the damage of the pressure adaptation of the oil smoke circulation channel caused by the pot turning, so that in the pot turning process, flame cannot be violently erupted upwards and outwards, and the collection of oil smoke is influenced.

Description

Flame-proof structure for top pot of stove

Technical Field

The invention relates to the field of household or commercial stoves, in particular to a stove pot-tossing flame-proof structure which does not cause a great amount of flame to be sprayed to influence oil smoke collection when a user tosses a pot.

Background

Recently, the public is very disgusting of the oil smoke generated from catering stoves, and the emission of the oil smoke generated from domestic or commercial stoves in homes or communities is a hot spot causing complaints. And the range hood adopted indoors usually cannot meet the requirements of users.

There are several conventional range hoods, including a top-suction range hood described in chinese patent document CN1246641C, which has an upper hood body, and a fan is installed in the upper hood body, so that oil smoke is collected by the hood body and discharged from the fan. However, although the prior art has made various improvements to the upper-suction type, the oil smoke extraction effect is still not ideal. 2. A method of manufacturing a down-draft type range hood and a down-draft type range hood, for example, described in chinese patent document CN 101329080A. The scheme can well absorb the oil smoke floating along the edge of the pot, but the oil smoke generated in the middle of the pot has almost no extraction effect, so the effect is not ideal.

In the prior art, there is a technology for performing a cyclic treatment on collected oil smoke, which can introduce the collected oil smoke into a combustion chamber for secondary combustion, and treat the oil smoke through high-temperature ablation, so as to obtain a better technical effect, for example, chinese patent document CN105864831A discloses a kitchen range for beneficial treatment of oil smoke and a method for treating oil smoke by the kitchen range, which are solutions invented by the inventor to solve the above technical problems. Utilize the wind-force of oil pumping cigarette, make the oil smoke gas that carries carry out fully preheating and high temperature reheating after centrifugal filtration, will remain the condensation oil smoke gasification on the pipeline wall before, get into the combustor with the oil smoke that inhales and burn the decomposition together, the waste gas after the burning carries the heat to reheat and preheat the oil smoke gas that follow-up entering, discharge from the exhaust port of keeping away from the furnace mouth at last, discharged waste gas does not contain the oil smoke composition basically after burning the decomposition, the high quality abundant burning and the heat utilization of oil smoke have been realized. However, in the process of turning the pot, because the pressure adaptation of the circulating channel is damaged, the fire channel is easy to flow backwards, the oil smoke is easy to overflow, namely the negative pressure formed in the smoke hood is possibly higher than the negative pressure generated in the fire channel, so that the smoke in the fire channel cannot be discharged, and the flame and the smoke are dissipated outwards.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a stove top pan flame-proof structure, which can avoid the influence of top pan on oil smoke collection, avoid the influence of continuous flame emission on operators or the influence on oil smoke collection, thereby avoiding the escape of oil smoke. In the preferred scheme, the effect of oil smoke collection can be improved, and the new technical problem caused by the improvement of the oil smoke collection effect can be overcome.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a stove top pot flame-proof structure comprises a stove body, a hearth is arranged in the stove body, a smoke hood is arranged above the hearth, a fire relief port is arranged at the back of the smoke hood and communicated with a chimney.

In the preferred scheme, an inclined downward fire guide plate is arranged above the fire discharge port;

the bottom of the fire guide plate is positioned at a position close to the upper end of the hearth and far away from one side of an operator.

In the preferred scheme, a flame guide device is arranged between the top of a hearth and a pot, a space between the hearth and the flame guide device is communicated with a chimney, a concave part is arranged on the flame guide device, a cavity structure is formed between the concave part and the bottom of the pot, and a fire passing hole or a fire passing grid is arranged on the concave part.

In a preferable scheme, the edge of the flame guide device is provided with an edge part extending outwards, the edge part is fixedly or movably connected with the upper part of the hearth, and the edge part is provided with a tempering groove pore.

In a preferred scheme, a movable flame blocking part is arranged above or below the fire passing hole or the fire passing grid. When the pot leaves the upper part of the hearth, the flame blocking part rotates or slides under the action of the linkage mechanism, or the combination of the moving modes, so that the fire passing holes or the fire passing grids are completely or partially closed;

when the pot is arranged on the upper part of the hearth, the flame blocking part rotates or slides through the linkage mechanism, or the combination of the moving modes enables the fire passing holes or the fire passing grids to be opened.

In the preferred scheme, the flame blocking part is of a bent L-shaped structure, the middle of the flame blocking part is hinged with a hinge base near the fire passing hole or the fire passing grid, the lighter part is used for blocking the fire passing hole or the fire passing grid at two sides of a hinged fulcrum, and the end head of the heavier part is hinged with the transverse transmission rod;

the end of the transverse transmission rod is hinged with one end of an L-shaped bent transmission rod, the other end of the bent transmission rod is hinged with the lower end of the vertical transmission rod, and the middle of the bent transmission rod is hinged with the bottom of the flame guide device; the upper end of the vertical transmission rod penetrates through the flame guide device, and a section of the vertical transmission rod is exposed out of the upper surface of the flame guide device.

In the preferred scheme, the petticoat pipe be equipped with back and petticoat pipe lateral wall, the back of petticoat pipe links as an organic wholely with the back of the kitchen body, the top of petticoat pipe is equipped with the petticoat pipe dome, the position and the air exhauster of petticoat pipe dome are connected.

In the preferred scheme, an air outlet of the exhaust fan is connected with an oil smoke channel, the oil smoke channel is connected with an air inlet chamber in the hearth, the air inlet chamber is communicated with a mixing chamber, the upper part of the mixing chamber is provided with a combustion chamber, a gas pipe is communicated with the combustion chamber, the combustion chamber is communicated with a fire channel, the fire channel is communicated with a chimney, and the combustion chamber is positioned below the flame guide device;

or the smoke hood dome is communicated with the oil smoke purifier at the top, the bottom and the side lower part of the stove body, and the oil smoke purifier is communicated with the chimney.

In the preferred scheme, a fire discharge channel is arranged in the chimney, and a fire discharge port is connected with the fire discharge channel.

In a preferred scheme, part or all of the side wall of the smoke hood is a movable side wall which can slide, lift or rotate, and the movable side wall is used for avoiding an operation channel.

According to the stove top pan flame-proof structure provided by the invention, through the fire discharge port arranged on the back of the smoke hood, flame can be sucked by the fire discharge port when a user is top pan, so that the influence of flame injection on the normal operation of an operator is avoided. And also avoids the collection of the oil smoke influenced by the flame eruption. In the preferred scheme, the flame guide device between the upper part of the hearth and the pot overcomes the problem of the damage of the pressure adaptation of the oil smoke circulation channel caused by the pot turning, so that in the pot turning process, flame cannot be violently erupted upwards and outwards, and the collection of oil smoke is influenced. Because commercial cooking utensils often need to top the pot, a large amount of flame tail gas are shot out from between pot and the furnace top, can not follow the operator to set up the side draft basically and collect the oil smoke, and this direction is the best accurate position of receiving the oil smoke of little amount of wind. After the flame guide structure and the flame guide device are arranged, the flame tail gas jet flow is very small, the oil smoke collection cannot be influenced, or the flame tail gas jet flow can be collected by the exhaust fan and the oil smoke together. After the device is used for a period of time, the flame guiding device can store more heat, so that the dish heating effect is improved. Specifically, in the structure of oil smoke circulation, be in the malleation state in furnace, under this state, the oxygen suppliment is more sufficient, and the pilot flame device that sets up helps keeping the malleation state to avoid making flame upwards and outwards violently erupt because of the top pot and lead to the difficult problem of collecting of oil smoke. In a further preferred scheme, the smoke hood with the smoke hood side wall and the smoke hood dome is adopted, and after the exhaust fan is started, the inner cavity space of the smoke hood is negative pressure compared with the atmospheric environment. Namely, the oxygen supply air always flows into the smoke hood from the atmospheric environment through the air inlet, thereby ensuring the collection effect of the oil smoke. The invention adopts practical experiments to verify that the dishes with large oil smoke are fried in the pan, after the exhaust fan is started, the oil smoke is reliably collected in the smoke hood and is discharged from the exhaust fan, and the oil smoke does not escape in the whole process. The environmental temperature is 0~5 ℃ during the test, and the loss of oil smoke can be fine with the naked eye observation. In the pot-jolting experiment, it can be obviously observed that the oil smoke enters the smoke hood, and the flame is guided to the fire discharge port by the fire guide plate. In the further preferred scheme, the smoke hood dome that sets up is more convenient for collect the oil smoke: the oil smoke rising resistance is reduced, the formation of turbulent flow in the oil smoke rotating and rising process is avoided, and the oil smoke collecting effect is greatly improved. The scheme of the oil smoke channel and the fire channel can send collected oil smoke into the combustion chamber for secondary combustion, thereby reducing oil smoke emission and improving energy utilization rate. The movable side wall structure of setting can be when the operator needs to remove the pot, for example when going out the pot or reinforced, dodges the operation passageway to be convenient for the operator to operate.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic front view of the overall structure of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a side view of the pot of the present invention.

Fig. 4 is a schematic perspective view of the flame guide apparatus of the present invention.

FIG. 5 is a top view of a preferred embodiment of the flame guide of the present invention.

FIG. 6 is a side view of a preferred embodiment of the present invention with the flame guide enclosed.

Fig. 7 is a side view of the flame guide in a preferred embodiment of the invention when open.

In the figure: the range comprises a smoke hood 1, an air inlet 101, smoke hood side walls 102, a smoke hood dome 103, a range body 2, a range body pot edge 21, a range body table top 22, an exhaust fan 3, a flame guiding device 4, an edge portion 41, a concave portion 42, a fire passing hole 43, a tempering groove hole 44, a fire passing grid 45, a vertical transmission rod 46, a bending transmission rod 47, a transverse transmission rod 48, a flame baffle plate 49, a combustion chamber 5, a mixing chamber 6, an air inlet chamber 7, a gas pipe 8, a pot 9, an oil smoke channel 10, a fire channel 11, flames 12, a fire discharging channel 13, a fire discharging port 14 and a fire guiding plate 15.

Detailed Description

Example 1:

as shown in fig. 1-3, a stove top pot flame-proof structure comprises a stove body 2, a hearth is arranged in the stove body 2, a smoke hood 1 is arranged above the hearth, a fire release port 14 is arranged at the back of the smoke hood 1, and the fire release port 14 is communicated with a chimney. With the structure, in the process of the operator turning the pan, the flame sprayed out of the hearth is attracted by the fire release port 14, so that the operation of the operator is not influenced.

In a preferred scheme, as shown in fig. 2 and 3, a fire deflector 15 which inclines downwards is arranged above the fire discharge port 14;

the bottom of the fire guide plate 15 is positioned at a position close to the upper end of the hearth and far away from one side of an operator. With the structure, the flame can be conveniently guided into the fire release port 14, and the flame and the oil smoke can be separated, so that the untreated oil smoke can be prevented from being discharged.

Example 2:

on the basis of the above embodiments, as shown in fig. 1 to 5, preferably, the flame guide device 4 is arranged between the top of the hearth and the pan 9, a space between the hearth and the flame guide device 4 is communicated with the chimney, the flame guide device 4 is provided with a recess 42, a cavity structure is formed between the recess 42 and the bottom of the pan 9, and the recess 42 is provided with the fire passing hole 43 or the fire passing grid 45. With the structure, the cavity structure between the concave part 42 and the bottom of the pot 9 is always kept at positive pressure, and flame can be prevented from being sprayed to the direction of an operator, so that the influence of the pot on the operator is overcome. In the prior art, when the pan is turned upside down, the gas output is controlled to reduce the flame, but the solution makes the operation of stir-frying difficult because the heated flame is too small.

In a preferred scheme, an edge part 41 extending outwards is arranged at the edge of the flame guide device 4, the edge part 41 is fixedly or movably connected with the upper part of a hearth, and a tempering slot pore 44 is arranged at the edge part 41. When the pot is seated on the upper part of the hearth, part of flame smoke passes through the flame-passing holes 43 or the flame-passing grids 45 and penetrates out of the flame-guiding device 4, the upper part of the flame-guiding device and the flame smoke at the bottom of the pot are in a large positive pressure, and the arranged tempering groove holes 44 are used for enabling the smoke which passes through the flame-passing holes 43 or the flame-passing grids 45 to enter the fire channel 11 from the tempering groove holes 44 and then to be discharged into a chimney from the fire channel 11; when the pot is overturned, the upper part of the flame guide device and the firework smoke at the bottom of the pot are at the pressure close to the atmospheric pressure, namely the positive pressure is very small, the firework pressure in the fire channel 11 is higher than the pressure, the fireworks in the fire channel 11 are tempered to the holes of the tempering grooves, the pot bottom firework smoke at the fire passing holes 43 or fire passing grids 45 is pressed to emit airflow to the outside of the pot, and after the holes 44 of the tempering grooves are arranged, the high-temperature firework smoke above the pot is not ejected from the pot edge, so that the influence on oil smoke collection is reduced. Through setting up the position of tempering groove hole 44, make the influence of high temperature fireworks flue gas efflux in the direction of being convenient for oil smoke collection to the oil smoke, be favorable to the collection processing of oil smoke very much. Experiments prove that almost no jet flow exists in the place with the pores of the tempering tank; and the jet flow has obvious effect of guiding the flow of the oil smoke in places without the holes of the tempering tank. The holes of the tempering grooves are arranged from the front two sides of the operator to the opposite side of the pot, the holes of the tempering grooves are not arranged at about 90 degrees, the oil smoke is orderly fluctuated from the 90 degrees direction when the pot is overturned, and the oil smoke is effectively collected within the 90 degree range.

In the preferred embodiment, as shown in fig. 6 and 7, a movable flame-blocking member 49 is provided above or below the fire-passing hole 43 or the fire-passing grid 45. When the pot 9 leaves the upper part of the hearth, the flame blocking part 49 rotates or slides under the action of the linkage mechanism, or the combination of the moving modes, so that the fire passing holes 43 or the fire passing grids 45 are completely or partially closed;

when the pot 9 is seated on the upper part of the hearth, the flame blocking part 49 rotates or slides through a linkage mechanism, or the combination of the moving modes, so that the fire passing holes 43 or the fire passing grids 45 are opened. By the structure, the influence of flame smoke jet flow sprayed from the bottom of the pan on the collection of oil smoke is further reduced when the pan is overturned.

In a further preferred scheme, as shown in fig. 6 and 7, the flame blocking part 49 is of a bent L-shaped structure, the middle of the flame blocking part 49 is hinged with a hinge base near the fire passing hole 43 or the fire passing grid 45, two sides of the hinge pivot are provided with a lighter part for blocking the fire passing hole 43 or the fire passing grid 45, and the end of the heavier part is hinged with the transverse transmission rod 48;

the end of the transverse transmission rod 48 is hinged with one end of an L-shaped bending transmission rod 47, the other end of the bending transmission rod 47 is hinged with the lower end of the vertical transmission rod 46, and the middle of the bending transmission rod 47 is hinged with the bottom of the flame guiding device 4; the upper end of the vertical transmission rod 46 passes through the flame guide 4 and has a section exposed on the upper surface of the flame guide 4. When no pot 9 is arranged at the upper part of the hearth, the flame blocking part 49 partially or completely seals the fire passing hole 43 or the fire passing grid 45 under the influence of the structure and the self weight of the transverse transmission rod 48 and the flame blocking part 49, as shown in figure 6. When the pot 9 is placed on the upper part of the hearth, the vertical transmission rod 46 is pressed down, the vertical transmission rod 46 drives the bending transmission rod 47 to rotate anticlockwise, so that the transverse transmission rod 48 is driven to move towards the upper right, the transverse transmission rod 48 drives the flame blocking part 49 to rotate, and the fire passing hole 43 or the fire passing grid 45 is opened. As shown in fig. 7.

In the alternative, the flame blocking member 49 is fixedly connected to a vertical shaft, the vertical shaft is in threaded connection with a section of screw, the upper end of the screw extends out of the upper surface of the flame guide 4, when the screw is pressed down by the pot, the screw drives the vertical shaft to rotate, the flame blocking member 49 opens the fire passing hole 43 or the fire passing grid 45, and when the pot leaves the flame guide 4, the vertical shaft is reset under the action of a spring.

In another alternative, a plurality of plates which can move horizontally or up and down are arranged above or below the fire passing holes 43 or the fire passing grids 45. In the default state, the plates partially or completely enclose the fire holes 43 or fire grates 45. Each plate is fixedly connected with a transmission rod, the end of the transmission rod extends out of the stove body 2, and the expansion and contraction of the transmission rod are controlled manually or by a cylinder, namely the control plate opens or closes the fire passing holes 43 or the fire passing grids 45.

Example 3:

on the basis of the embodiment, a preferable scheme is as shown in fig. 1 to 3, the smoke hood 1 is provided with a back face and a smoke hood side wall 102, the back face of the smoke hood 1 is connected with the back face of the stove body 2 into a whole, a smoke hood dome 103 is arranged at the top of the smoke hood 1, and the smoke hood dome 103 is connected with the exhaust fan 3. With the structure, after the exhaust fan 3 is started, oxygen supply air enters the smoke hood 1 from the air inlet 101 under the condition of negative pressure in the atmospheric environment. Greatly improving the efficiency of oil smoke collection.

In a preferable scheme, the distance between the side wall 102 of the smoke cover and the stove body 2 is 0-40 cm. Specifically, the distance from the bottom of the planar, arc-shaped or approximately circular curved smoke hood side wall 102 of the smoke hood 1 to the stove body table top 22 of the stove body 2 is 0-40 cm, preferably 0-20 cm, further preferably 0-10 cm, and further preferably 0-5 cm. Or the distance from the inner side of the bottom of the side wall 102 of the curved-surface smoke hood with the plane, the arc or the approximate arc of the smoke hood 1 to the edge 21 of the stove body 2 is 0-40 cm, preferably 0-20 cm, further preferably 0-10 cm, and further preferably 0-5 cm. With the structure, the section size of the air inlet 101 of the smoke hood 1 is controlled.

As can be seen from the gas flow pressure equation,

f = CρAv×v/2

f is the required negative pressure, rho is the air density, A is the effective cross-sectional area of the air inlet, v is the wind speed, and C is the resistance coefficient. The cross-sectional area of the air inlet is reduced, and negative pressure can be effectively improved. In this example, the oil fume collecting effect is excellent through the water vapor simulation experiment.

The preferable scheme is as shown in fig. 1-3, the hood dome 103 is a trapezoidal top, an arc top, a parabolic top, a hyperbolic top or a shape of other curved surfaces, which is close to the arc top, the parabolic top or the hyperbolic top;

preferably, as shown in fig. 1 to 3, the smoke hood side wall 102 is a plane, an arc surface or a near-circular curved surface. With the structure, the oil smoke can rise in a rotating manner conveniently, turbulence can not be generated, and the oil smoke is prevented from escaping from the air inlet. But also the hood dome 103 can be used to store part of the cooking fumes.

Example 4:

on the basis of the above embodiment, as shown in fig. 2 and 3, in a preferred scheme, an air outlet of an exhaust fan 3 is connected with an oil smoke channel 10, the oil smoke channel 10 is connected with an air inlet chamber 7 in a hearth, the air inlet chamber 7 is communicated with a mixing chamber 6, a combustion chamber 5 is arranged at the upper part of the mixing chamber 6, a gas pipe 8 is communicated with the combustion chamber 5, the combustion chamber 5 is communicated with a fire channel 11, the fire channel 11 is communicated with a chimney, and the combustion chamber 5 is located below a flame guide device 4; with the structure, the collected oil smoke passes through the oil smoke channel 10 from the air inlet chamber 7, passes through the porous net, is fully mixed with the fuel gas from the fuel gas pipe 8 in the mixing chamber 6, enters the combustion chamber 5 for combustion, and the high-temperature flue gas after combustion is discharged into a chimney through the fire channel 11. The detection is carried out by a detection mechanism according to the detection criterion of GB18483-2001 appendix A, HJ-T44-1999. The detection instrument is an infrared light splitting oil detector, and the detection result is that the actually measured oil smoke emission concentration at the smoke inlet of the stove is 9.4 mg/m³The actually measured fume exhaust concentration at the fume outlet of the stove is 0.3 mg/m³The oil fume purification rate is 94.7%, the oil fume purification rate completely meets the emission standard, and neighborhood disputes are reduced. Particularly, the catering places of the previous residential districts can only be arranged on the top floor, and after the invention is adopted, the catering places can be arranged on any floor, and the influence on neighbors due to the emission of oil smoke is avoided. Further preferably, the chimney is also communicated with the oil fume purifier. The method is mainly used for removing residual ash in the tail gas. Such as electrostatic fume purifiers, and combinations of showers and electrostatic fume purifiers.

Or the smoke hood dome 103 is communicated with the oil smoke purifiers at the top, the bottom and the lateral lower part of the stove body 2, and the oil smoke purifiers are communicated with the chimney. Such as electrostatic fume purifiers, and combinations of showers and electrostatic fume purifiers.

In a preferred scheme, as shown in fig. 2 and 3, the fire channel 11 and the oil smoke channel 10 are positioned in a chimney so as to exchange heat with each other.

In a preferred scheme, a fire discharge channel 13 is arranged in the chimney, and a fire discharge port 14 is connected with the fire discharge channel 13. Preferably, the outlet of the fire escape path 13 is located near the top of the chimney. Therefore, the negative pressure at the position of the fire-discharging port 14 is improved.

In a preferred scheme, part or all of the hood side wall 102 is a movable side wall which can slide, lift or rotate and is used for avoiding an operation channel.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the technical features described in the present invention can be combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. The utility model provides a kitchen range top pot flame proof structure, includes the kitchen body (2), is equipped with furnace, characterized by in the kitchen body (2): a smoke hood (1) is arranged above the hearth, a fire vent (14) is arranged at the back of the smoke hood (1), and the fire vent (14) is communicated with a chimney;

a flame guide device (4) is arranged between the top of the hearth and the pot (9), a space between the hearth and the flame guide device (4) is communicated with the chimney, a concave part (42) is arranged on the flame guide device (4), a cavity structure is formed between the concave part (42) and the bottom of the pot (9), and a fire passing hole (43) or a fire passing grid (45) is arranged on the concave part (42);

a movable flame blocking component (49) is arranged above or below the fire passing hole (43) or the fire passing grid (45), and when the pot (9) leaves the upper part of the hearth, the flame blocking component (49) rotates or slides under the action of a linkage mechanism, or the combination of the moving modes, so that the fire passing hole (43) or the fire passing grid (45) is completely or partially closed; when the pot (9) is positioned at the upper part of the hearth, the flame blocking part (49) is rotated or slid through a linkage mechanism or the combination of the moving modes, so that the fire passing hole (43) or the fire passing grid (45) is opened;

a fire guide plate (15) which inclines downwards is arranged above the fire discharge port (14); the bottom of the fire guide plate (15) is positioned at a position close to the upper end of the hearth and far away from one side of an operator.

2. The range top pan flame proofing structure of claim 1, wherein: the edge of the flame guide device (4) is provided with an edge part (41) extending outwards, the edge part (41) is fixedly or movably connected with the upper part of the hearth, and the edge part (41) is provided with a tempering groove pore (44).

3. The range top pan flame proofing structure of claim 1, wherein: the flame blocking component (49) is of a bent L-shaped structure, the middle of the flame blocking component (49) is hinged with a hinge base near the fire passing hole (43) or the fire passing grid (45), the lighter part is used for blocking the fire passing hole (43) or the fire passing grid (45) at two sides of a hinge pivot, and the end head of the heavier part is hinged with the transverse transmission rod (48); the end of the transverse transmission rod (48) is hinged with one end of an L-shaped bending transmission rod (47), the other end of the bending transmission rod (47) is hinged with the lower end of the vertical transmission rod (46), and the middle of the bending transmission rod (47) is hinged with the bottom of the flame guide device (4); the upper end of the vertical transmission rod (46) penetrates through the flame guide device (4) and is provided with a section exposed on the upper surface of the flame guide device (4).

4. A stove top pan flame-proof structure as claimed in any one of claims 1 to 3, wherein: petticoat pipe (1) be equipped with back and petticoat pipe lateral wall (102), the back of petticoat pipe (1) links as an organic wholely with the back of the kitchen body (2), the top of petticoat pipe (1) is equipped with petticoat pipe dome (103), the position and the air exhauster (3) of petticoat pipe dome (103) are connected.

5. The range top pan flame proofing structure of claim 4, wherein: an air outlet of the exhaust fan (3) is connected with an oil smoke channel (10), the oil smoke channel (10) is connected with an air inlet chamber (7) in the hearth, the air inlet chamber (7) is communicated with a mixing chamber (6), a combustion chamber (5) is arranged at the upper part of the mixing chamber (6), a gas pipe (8) is communicated with the combustion chamber (5), the combustion chamber (5) is communicated with a fire channel (11), the fire channel (11) is communicated with a chimney, and the combustion chamber (5) is positioned below the flame guide device (4);

or the smoke hood dome (103) is communicated with the oil smoke purifiers at the top, the bottom and the lateral lower part of the stove body (2), and the oil smoke purifiers are communicated with the chimney.

6. The range top pan flame proofing structure of claim 5, wherein: a fire discharge channel (13) is arranged in the chimney, and a fire discharge port (14) is connected with the fire discharge channel (13).

7. The range top pan flame proofing structure of claim 4, wherein: and part or all of the hood side wall (102) is a movable side wall which can slide, lift or rotate and is used for avoiding an operation channel.