A height-limited furnace

Abstract

The present invention discloses a limited height stove, which relates to the technical field of gas stoves, specifically a premixing pipe, a base and a heat insulation sheet, wherein a blower is connected to one side of the premixing pipe, the base is connected to the top of the premixing pipe, outer ring air cavity curtain air outlets are provided on both sides of the base, a burner is provided on the surface of the base, an outer ring fire cover is provided inside the fixed position of the grate, and an inner ring fire cover is provided inside the outer ring fire cover, an inner fire hole is provided on the surface of the inner ring fire cover, a box cavity is provided between the outer surface of the burner and the side of the air inlet pipe plate, and an electromagnetic field device is also provided at the edge of the base. In the limited height stove, air rises through the air curtain hole through the guide strip during the annular flow inside the fixed position of the grate, and the rising air forms an annular air curtain along the periphery of the pot to guide the smoke generated by cooking to rise inside the air curtain, so that the smoke cannot break through the air curtain and diffuse, thereby helping to prevent the human body from being irritated by the smoke.

Description

Technical Field

[0001] The invention relates to the technical field of gas stoves, in particular to a stove with limited height. Background Art

[0002] A gas stove refers to a kitchen appliance that uses gas fuels such as liquefied petroleum gas (liquid), artificial gas, and natural gas for direct fire heating. A gas stove is also called a gas stove, stove plate, stove top, stove, and stove. Everyone knows how popular it is.

[0003] Existing gas stoves often need to be used in conjunction with range hoods when in use, because smoke is generated during cooking, and the smoke rises and is extracted by the range hood to avoid smoke diffusion. However, in actual use, the smoke will remain in a rising state before being extracted. During the rising process, the inevitable smoke may still diffuse in a small area, thereby affecting and stimulating the cook's senses. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a height-limited stove, which solves the problem mentioned in the above background technology that the existing gas stoves often need to be used in conjunction with a range hood when in use, because smoke is generated during cooking, and the smoke rises and is extracted by the range hood to avoid smoke diffusion, but in actual use, the smoke will remain in a rising state before being extracted, and the smoke that is inevitable in the rising process may still diffuse in a small range, thereby affecting the senses of the cook.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a limited height stove, comprising a premixing pipe, a base and a heat insulation sheet, one side of the premixing pipe is connected to a blower, the base is connected to the top of the premixing pipe, outer ring air cavity curtain air ports are provided on both sides of the base, and an anti-dry burning pipe port is provided in the middle of the base, needle pipe ports are provided on both sides of the anti-dry burning pipe port, a burner secondary air replenishment port is provided at the edge of the base, a primary air premixing port is provided on one side of the needle pipe port, an air intake pipe plate is provided at the edge of the other side of the base, a gas flow sensor is provided inside the air intake pipe plate, a burner head is provided on the surface of the base, and a climbing ring groove is provided inside the burner, an ignition needle and a sensing needle are respectively provided inside the two needle pipe ports, a limiting ring is provided on the outer surface of the burner head, and a grate fixing position is provided on the surface of the limiting ring, and a grate fixing position is provided on the outer edge of the grate fixing position surface The heat sink has an air curtain hole, and a heat sink is embedded in the surface of the grate fixing position, the grate body is placed on the surface of the heat sink, a guide strip is arranged on the top of the inner wall of the grate fixing position, and an inner air hole is opened at the inner edge of the surface of the grate fixing position, an outer ring fire cover is arranged inside the grate fixing position, and an inner ring fire cover is arranged inside the outer ring fire cover, an outer fire hole is opened on the surface of the outer ring fire cover, an inner fire hole is opened on the surface of the inner ring fire cover, and a brim is arranged at the top edge of the inner ring fire cover and the outer ring fire cover, the heat insulation sheet is arranged above the inner ring fire cover, and a circular hole is opened in the middle of the heat insulation sheet, a limiting sheet is arranged at the bottom of the heat insulation sheet, an anti-interference probe is penetrated inside the circular hole, and the bottom of the anti-interference probe passes through the anti-dry burning pipe mouth and is connected to a fixed structure, a box cavity is arranged between the outer surface of the burner head and the side of the air inlet pipe plate, an electromagnetic field device is also arranged at the edge of the base, and a driving fan is connected inside the electromagnetic field device.

[0006] Furthermore, the interior of the premixing pipe is connected with the secondary air supply port of the burner and the outer ring air cavity curtain air port, and the outer ring air cavity curtain air port is engaged and connected with the limiting ring.

[0007] Furthermore, the grate body is snap-connected with the grate fixing position via a heat sink, and the air curtain holes are evenly arranged on the surface of the grate fixing position in a ring shape.

[0008] Furthermore, one end of the air inlet pipe plate is connected to the furnace head through a box cavity, and the box cavity is connected to the driving fan through a primary air premixing port.

[0009] Furthermore, the heat insulation sheet is distributed in parallel with the inner ring fire cover, and the heat insulation sheet is snap-connected with the inner ring fire cover via a limiting sheet.

[0010] Furthermore, the vertical center axis of the anti-interference probe coincides with the vertical center axis of the inner ring fire cover, and the vertical center axes of the inner ring fire cover, the burner head and the base coincide with each other.

[0011] Furthermore, the burner head is a concentric circle structure, and the burner secondary air supply port is located below the burner head.

[0012] Furthermore, the guide strips are evenly distributed on the top of the inner wall of the furnace frame fixing position in an inclined shape, and the inner air holes are symmetrically distributed about the vertical center axis of the furnace frame fixing position.

[0013] Furthermore, the top of the anti-interference probe is located at a height higher than the top of the furnace frame body, and the bottom of the anti-interference probe is fixedly connected to the bottom of the base through a fixing structure.

[0014] Furthermore, the driving fan is rotationally connected to the electromagnetic field device, and the driving fan is electrically connected to the gas flow sensor.

[0015] The present invention provides a height-limited furnace, which has the following beneficial effects:

[0016] 1. The electromagnetic field device of the height-limited stove is a brushless motor. The air intake pipe plate passes the gas through the box cavity and reaches the climbing ring groove of the stove head. During this process, the electromagnetic field device drives the driving fan to rotate and pushes the primary air through the primary air premixing port to the inside of the box cavity, so that the gas and air are mixed once. When the firepower is adjusted in the subsequent cooking to change the gas delivery amount, the gas flow sensor synchronously senses the change in the gas delivery amount and synchronously controls the current output of the electromagnetic field device, thereby achieving the effect of adjusting the driving fan speed, so that the injection amount of the primary air changes in a manner that maintains a uniform ratio with the gas delivery amount, so that the mixed gas can be fully burned during combustion.

[0017] 2. The height-limited furnace has a wavy annular structure at the bottom of the climbing ring groove, and the climbing ring grooves are distributed in concentric circles. The air intake pipe plate transports the mixed gas once mixed to the inside of the climbing ring groove and flows in an annular manner, so that the air and gas are buffered and mixed more fully, and then the mixed gas flows out from the inner fire hole on the surface of the inner ring fire cover and the outer fire hole on the surface of the outer ring fire cover respectively. At this time, the induction needle senses the mixed gas to control the ignition needle to start, thereby igniting the mixed gas to make it burn, and the ignited gas, i.e., the flame, is guided through the cap brim to avoid flying fire and flame separation.

[0018] 3. For the height-limited furnace, the blower is operated to inject air into the premixing pipe for circular flow, and then the air passes through the secondary air supply port of the burner and rises from the gap between the climbing ring grooves to the periphery of the inner ring fire cover, so that the flame combustion around the inner ring fire cover has sufficient oxygen, and the air injected by the blower operation also enters the internal circular flow of the fixed position of the grate through the outer ring air cavity curtain air port. During the air flow, it passes through the guide strips and the inner air holes and flows to the periphery of the outer ring fire cover, so that the flame around the outer ring fire cover can also burn fully.

[0019] 4. In this height-limited stove, the air flows in a circular manner inside the fixed position of the stove frame and rises through the guide strips and the air curtain holes. The rising air forms an annular air curtain along the periphery of the pot to guide the smoke generated by cooking to rise inside the air curtain, so that the smoke cannot break through the air curtain and spread, which is helpful to prevent the human body from being irritated by the smoke.

[0020] 5. In the height-limited furnace, the heat insulation sheet and the inner ring fire cover are distributed in parallel up and down, and the heat insulation sheet is made of heat-insulating material, such as ceramics. The flame heat around the inner ring fire cover and the outer ring fire cover is blocked by the heat insulation sheet to avoid the temperature rise of the anti-interference probe. The anti-interference probe passes through the inner ring fire cover, the burner head and the base from top to bottom in sequence, and there are gaps between the anti-interference probe and the inner ring fire cover, the burner head and the base. Cold air rises in the gap, and the hot air generated by the combustion enters the gap between the heat insulation sheet and the inner ring fire cover. Convection heat exchange occurs between the cold air and the hot air, which is beneficial to further reduce the temperature rise of the anti-interference probe, thereby preventing the anti-interference probe from affecting its service life due to heat transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional explosion structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the operating structure of the drive fan of the present invention;

[0023] Figure 3 This is a schematic diagram of the operating structure of the secondary air supply port of the burner of the present invention;

[0024] Figure 4 This is a schematic diagram of the operation structure of the air curtain hole of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the heat insulation sheet of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the furnace frame fixing position of the present invention.

[0027] In the figure: 1. premixing pipeline; 2. blower; 3. base; 4. outer ring air cavity curtain air outlet; 5. anti-dry burning pipe outlet; 6. needle pipe outlet; 7. primary air premixing air outlet; 8. burner secondary air supply port; 9. air inlet pipe plate; 10. burner head; 11. climbing ring groove; 12. ignition needle; 13. induction needle; 14. limit ring; 15. grate fixing position; 16. air curtain hole; 17. heat sink; 18. grate body; 19. outer ring fire cover; 20. inner ring fire cover; 21. outer fire hole; 22. inner fire hole; 23. brim; 24. heat insulation sheet; 25. round hole; 26. limit sheet; 27. anti-interference probe; 28. fixed structure; 29. ​​box cavity; 30. electromagnetic field device; 31. drive fan; 32. guide strip; 33. inner air hole. DETAILED DESCRIPTION

[0028] like Figure 1-6As shown, the present invention provides a technical solution: a limited height furnace, including a premixing pipe 1, a base 3 and a heat insulation sheet 24, a blower 2 is connected to one side of the premixing pipe 1, the base 3 is connected to the top of the premixing pipe 1, outer ring air cavity curtain air ports 4 are provided on both sides of the base 3, and an anti-dry burning pipe port 5 is provided in the middle of the base 3, and needle pipe ports 6 are provided on both sides of the anti-dry burning pipe port 5, a burner secondary air replenishment port 8 is provided at the edge of the base 3, a primary air premixing port 7 is provided on one side of the needle pipe port 6, an air intake pipe plate 9 is provided at the edge of the other side of the base 3, a gas flow sensor is provided inside the air intake pipe plate 9, a burner head 10 is provided on the surface of the base 3, and a climbing ring groove 11 is provided inside the burner head 10, and the insides of the two needle pipe ports 6 are respectively An ignition needle 12 and an induction needle 13 are provided, a limiting ring 14 is provided on the outer surface of the burner head 10, and a grate fixing position 15 is provided on the surface of the limiting ring 14, an air curtain hole 16 is provided at the outer edge of the surface of the grate fixing position 15, and a heat sink 17 is embedded on the surface of the grate fixing position 15, a grate body 18 is arranged on the surface of the heat sink 17, a guide strip 32 is provided on the top of the inner wall of the grate fixing position 15, and an inner air hole 33 is provided at the inner edge of the surface of the grate fixing position 15, an outer ring fire cover 19 is provided inside the grate fixing position 15, and an inner ring fire cover 20 is provided inside the outer ring fire cover 19, an outer fire hole 21 is provided on the surface of the outer ring fire cover 19, an inner fire hole 22 is provided on the surface of the inner ring fire cover 20, and the inner ring fire cover 20 and the outer ring fire cover 19 are connected. A brim 23 is provided at the edge of the top surface, a heat insulating sheet 24 is provided above the inner ring fire cover 20, and a circular hole 25 is opened in the middle of the heat insulating sheet 24, a limiting sheet 26 is provided at the bottom of the heat insulating sheet 24, an anti-interference probe 27 is passed through the inside of the circular hole 25, and the bottom of the anti-interference probe 27 passes through the anti-dry burning pipe port 5 and is connected to a fixed structure 28, a box cavity 29 is provided between the outer surface of the burner head 10 and the side of the air inlet pipe plate 9, an electromagnetic field device 30 is also provided at the edge of the base 3, and a driving fan 31 is connected to the inside of the electromagnetic field device 30, the interior of the premixing pipeline 1 is connected to the secondary air supply port 8 of the burner and the outer ring air cavity curtain air port 4, and the outer ring air cavity curtain air port 4 is snap-connected with the limiting ring 14, and the grate body 18 is connected to the grate through the heat sink 17 The frame fixing position 15 is snap-connected, and the air curtain hole 16 is evenly opened in a ring shape on the surface of the furnace frame fixing position 15. One end of the air inlet pipe plate 9 is connected with the furnace head 10 through the box cavity 29, and the box cavity 29 is connected with the driving fan 31 through the primary air premixing port 7. The heat insulation sheet 24 is distributed in parallel with the inner ring fire cover 20, and the heat insulation sheet 24 is snap-connected with the inner ring fire cover 20 through the limit sheet 26. The vertical center axis of the anti-interference probe 27 coincides with the vertical center axis of the inner ring fire cover 20, and the vertical center axes of the inner ring fire cover 20, the furnace head 10 and the base 3 coincide with each other. The furnace head 10 is a concentric circle structure, and the secondary air replenishment port 8 of the burner is located below the furnace head 10. The guide strips 32 are evenly distributed on the top of the inner wall of the furnace frame fixing position 15 in an inclined state.The inner air holes 33 are symmetrically distributed about the vertical center axis of the grate fixing position 15, the top of the anti-interference probe 27 is located at a height higher than the top of the grate body 18, and the bottom of the anti-interference probe 27 is fixedly connected to the bottom of the base 3 through the fixing structure 28, the driving fan 31 is rotatably connected to the electromagnetic field device 30, and the driving fan 31 is electrically connected to the gas flow sensor;

[0029] Real-time example 1:

[0030] The specific operations are as follows: Figure 1-2 As shown, the electromagnetic field device 30 is a brushless motor, and the air intake pipe plate 9 drives the gas through the box cavity 29 to reach the climbing ring groove 11 of the burner head 10. During this process, the electromagnetic field device 30 drives the driving fan 31 to rotate to push the primary air through the primary air premixing port 7 to the inside of the box cavity 29, so that the gas and air are mixed once, and the mixed gas then enters the climbing ring groove 11. The bottom of the climbing ring groove 11 is a wavy annular structure, and the climbing ring groove 11 is distributed in concentric circles. The air intake pipe plate 9 transports the once mixed mixed gas to the inside of the climbing ring groove 11 and flows in an annular flow, so that the air and gas are more fully mixed in a buffer, and then the mixed gas is respectively discharged from the surface of the inner ring fire cover 20. The gas gushes out from the inner fire hole 22 and the outer fire hole 21 on the surface of the outer ring fire cover 19. At this time, the induction needle 13 senses the mixed gas to control the ignition needle 12 to start, thereby igniting the mixed gas to make it burn, and the ignited gas, i.e., the flame, is guided through the brim 23 to avoid flying fire and flame separation. When the firepower is adjusted in the subsequent cooking to change the gas delivery amount, the gas flow sensor synchronously senses the change in the gas delivery amount and synchronously controls the current output size of the electromagnetic field device 30, thereby achieving the effect of adjusting the speed of the driving fan 31, so that the injection amount of the primary air changes in a manner that keeps a uniform ratio with the gas delivery amount, so that the mixed gas can be fully burned during combustion;

[0031] Embodiment 2:

[0032] The specific operations are as follows: Figure 1 , Figure 3 , Figure 6 As shown, the blower 2 operates to inject air into the premixing pipe 1 for annular flow, and then the air passes through the secondary air supply port 8 of the burner and rises from the gap between the climbing ring grooves 11 to the periphery of the inner ring fire cover 20, so that the flames around the inner ring fire cover 20 have sufficient oxygen for combustion, and the air injected by the blower 2 also enters the furnace frame fixing position 15 through the outer ring air cavity curtain air port 4 to flow in annular flow, and during the air flow, the air passes through the guide strip 32 and the inner air hole 33 to flow to the periphery of the outer ring fire cover 19, so that the flames around the outer ring fire cover 19 can also burn fully;

[0033] Embodiment three:

[0034] The specific operations are as follows: Figure 1 , Figure 4 As shown, the blower 2 operates to inject air into the premixing pipe 1 for annular flow, and then the air enters the furnace frame fixing position 15 through the outer ring air cavity curtain air port 4 for annular flow. During the annular flow inside the furnace frame fixing position 15, the air passes through the guide strip 32 and also passes through the air curtain hole 16 to rise. The rising air forms an annular air curtain along the periphery of the cookware to guide the smoke generated by cooking to rise in the air curtain, so that the smoke cannot break through the air curtain and diffuse. The smoke can only rise in the air curtain until it is extracted by the range hood, which is beneficial to prevent the human body from being irritated by the smoke.

[0035] Embodiment 4:

[0036] The specific operations are as follows: Figure 1 , Figure 5 The heat insulation sheet 24 is connected to the inner ring fire cover 20 by a stopper sheet 26. The heat insulation sheet 24 and the inner ring fire cover 20 are arranged parallel to each other up and down, and the heat insulation sheet 24 is made of heat insulation material, such as ceramic. The flame heat around the inner ring fire cover 20 and the outer ring fire cover 19 is blocked by the heat insulation sheet 24 to avoid the anti-interference probe 27 from being heated and generating temperature rise. The anti-interference probe 27 passes through the inner ring fire cover 20, the burner head 10, and the base 3 from top to bottom in sequence, and there is a gap between the anti-interference probe 27 and the inner ring fire cover 20, the burner head 10, and the base 3. Cold air rises in the gap, and the hot air generated by the combustion enters the gap between the heat insulation sheet 24 and the inner ring fire cover 20. Convection heat exchange occurs between the cold air and the hot air, which is beneficial to further reduce the temperature rise of the anti-interference probe 27, thereby preventing the anti-interference probe 27 from affecting its service life due to heat transfer.

[0037] Embodiment five:

[0038] The specific operations are as follows: Figure 1 , Figure 5 When cooking, the pot is supported by the stove body 18. At this time, the anti-interference probe 27 is located under the pot. The anti-interference probe 27 uses an infrared sensor or a laser sensor. After the pot is removed and the gas is still burning, the anti-interference probe 27 will be triggered. At this time, the anti-interference probe 27 controls the electronic valve on the gas pipe to close the pipe. At the same time, the electromagnetic field device 30 and the blower 2 will also be turned off to avoid gas waste and dry burning.

[0039] In summary, when the height-limited furnace is used, first, the burner head 10 is located at the top of the base 3, and the outer surface of the burner head 10 is sleeved with a limiting ring 14, and the outer surface of the limiting ring 14 is sleeved with a furnace frame fixing position 15, and the inner part of the furnace frame fixing position 15, that is, the top of the burner head 10 is provided with an outer ring fire cover 19, and the inner part of the outer ring fire cover 19 is provided with an inner ring fire cover 20, and the top of the anti-interference probe 27 is located at a height higher than the top of the furnace frame body 18, and the furnace frame body 18 is located on the surface of the heat sink 17;

[0040] First, the gas is passed through the box cavity 29 by the air intake pipe plate 9 to reach the climbing ring groove 11 of the burner head 10. During this process, the electromagnetic field device 30 drives the driving fan 31 to rotate to push the primary air through the primary air premixing port 7 to the inside of the box cavity 29, so that the gas and air are mixed once, and the mixed gas then enters the climbing ring groove 11. The bottom of the climbing ring groove 11 is a wavy annular structure, and the climbing ring groove 11 is distributed in concentric circles. The air intake pipe plate 9 transports the once mixed mixed gas to the inside of the climbing ring groove 11 and flows in an annular flow, so that the air and gas are more fully buffered and mixed, and then the mixed gas flows out from the inner fire hole 22 on the surface of the inner ring fire cover 20 and the outer fire hole 21 on the surface of the outer ring fire cover 19 respectively. At this time, the induction needle 13 senses the mixed gas to control the ignition needle 12 to start, thereby igniting the mixed gas to make it burn, and the ignited gas, i.e., the flame, is guided through the cap brim 23 to avoid flying fire and flame separation effects;

[0041] At the same time, the blower 2 operates to inject air into the premixing pipe 1 for annular flow, and then the air passes through the burner secondary air supply port 8 and rises from the gap between the climbing ring grooves 11 to the periphery of the inner ring fire cover 20, so that the flame combustion around the inner ring fire cover 20 has sufficient oxygen, and the air injected by the blower 2 also enters the furnace frame fixing position 15 through the outer ring air cavity curtain air port 4 to flow in annular flow. During the air flow process, the air passes through the guide strip 32 and the inner air hole 33 to flow to the periphery of the outer ring fire cover 19, so that the flame around the outer ring fire cover 19 can also burn fully;

[0042] In addition, the air flows in a circular manner inside the oven rack fixing position 15, passes through the guide strips 32 and also rises through the air curtain holes 16. The rising air forms an annular air curtain along the periphery of the cookware to guide the smoke generated by cooking to rise inside the air curtain, so that the smoke cannot break through the air curtain and diffuse. The smoke can only rise inside the air curtain until it is extracted by the range hood, thereby helping to prevent the human body from being irritated by the smoke.

[0043] Then, when the fire power is adjusted in the subsequent cooking to change the gas delivery amount, the gas flow sensor synchronously senses the change in the gas delivery amount and synchronously controls the current output of the electromagnetic field device 30, thereby achieving the effect of adjusting the speed of the driving fan 31, so that the injection amount of the primary air changes in a manner of maintaining a uniform ratio with the gas delivery amount, so that the mixed gas can be fully burned during combustion;

[0044] During cooking, the pot is supported by the stove body 18. At this time, the anti-interference probe 27 is located under the pot. The anti-interference probe 27 uses an infrared sensor or a laser sensor. After the pot is removed and the gas is still burning, the anti-interference probe 27 will be triggered. At this time, the anti-interference probe 27 controls the electronic valve on the gas pipe to close the pipe. At the same time, the electromagnetic field device 30 and the blower 2 will also be turned off to avoid waste of gas and dry burning.

Claims

1. A limited height furnace, comprising a premixing pipe (1), a base (3) and a heat insulation sheet (24), characterized in that: A blower (2) is connected to one side of the premixing pipe (1), the base (3) is connected to the top of the premixing pipe (1), outer ring air cavity curtain air ports (4) are provided on both sides of the base (3), and an anti-dry burning pipe port (5) is provided in the middle of the base (3), needle pipe ports (6) are provided on both sides of the anti-dry burning pipe port (5), a burner secondary air supply port (8) is provided at the edge of the base (3), a primary air premixing port (7) is provided on one side of the needle pipe port (6), an air inlet plate (9) is provided at the other side edge of the base (3), and the inside of the air inlet plate (9) is provided with a gas premixing port (7). A gas flow sensor is provided, a burner head (10) is provided on the surface of the base (3), and a climbing ring groove (11) is provided inside the burner head (10), an ignition needle (12) and a sensing needle (13) are provided inside the two needle nozzles (6), a limiting ring (14) is provided on the outer surface of the burner head (10), and a furnace frame fixing position (15) is provided on the surface of the limiting ring (14), an air curtain hole (16) is provided at the outer edge of the surface of the furnace frame fixing position (15), and a heat sink (17) is embedded in the surface of the furnace frame fixing position (15), and the surface of the heat sink (17) is provided with a furnace frame body The grate fixing position (15) comprises a body (18), a guide strip (32) is provided at the top of the inner wall of the grate fixing position (15), an inner air hole (33) is provided at the inner edge of the surface of the grate fixing position (15), an outer ring fire cover (19) is provided inside the grate fixing position (15), an inner ring fire cover (20) is provided inside the outer ring fire cover (19), an outer fire hole (21) is provided on the surface of the outer ring fire cover (19), an inner fire hole (22) is provided on the surface of the inner ring fire cover (20), and a brim (23) is provided at the top edge of the inner ring fire cover (20) and the outer ring fire cover (19), and the heat insulation sheet (24) is provided with a heat insulation sheet (24). The heat insulating plate (24) is placed above the inner ring fire cover (20), and a circular hole (25) is opened in the middle of the heat insulating plate (24). A limit plate (26) is arranged at the bottom of the heat insulating plate (24). An anti-interference probe (27) is inserted into the circular hole (25), and the bottom of the anti-interference probe (27) passes through the anti-dry burning pipe opening (5) and is connected to a fixed structure (28). A box cavity (29) is arranged between the outer surface of the burner head (10) and the side surface of the air inlet pipe plate (9). An electromagnetic field device (30) is also arranged at the edge of the base (3), and a driving fan (31) is connected to the inside of the electromagnetic field device (30).

2. A height-limited furnace according to claim 1, characterized in that: The interior of the premixing pipe (1) is connected to the secondary air supply port (8) of the burner and the outer ring air cavity curtain air port (4), and the outer ring air cavity curtain air port (4) is snap-fitted and connected to the limiting ring (14).

3. A height-limited furnace according to claim 1, characterized in that: The grate body (18) is snap-connected to the grate fixing position (15) via the heat sink (17), and the air curtain holes (16) are evenly arranged in a ring shape on the surface of the grate fixing position (15).

4. A height-limited furnace according to claim 1, characterized in that: One end of the air inlet pipe plate (9) is connected to the furnace head (10) via a box cavity (29), and the box cavity (29) is connected to the driving fan (31) via a primary air premixing port (7).

5. The height-limited furnace according to claim 1, characterized in that: The heat insulation sheet (24) is distributed in parallel with the inner ring fire cover (20), and the heat insulation sheet (24) is snap-connected to the inner ring fire cover (20) via a limiting sheet (26).

6. A height-limited furnace according to claim 1, characterized in that: The vertical center axis of the anti-interference probe (27) coincides with the vertical center axis of the inner ring fire cover (20), and the vertical center axes of the inner ring fire cover (20), the burner head (10) and the base (3) coincide with each other.

7. The height-limited furnace according to claim 1, characterized in that: The burner head (10) is in a concentric circle structure, and the burner secondary air supply port (8) is located below the burner head (10).

8. The height-limited furnace according to claim 1, characterized in that: The guide strips (32) are evenly distributed in an inclined manner on the top of the inner wall of the furnace frame fixing position (15), and the inner air holes (33) are symmetrically distributed about the vertical center axis of the furnace frame fixing position (15).

9. The height-limited furnace according to claim 1, characterized in that: The top of the anti-interference probe (27) is located at a height higher than the top of the furnace frame body (18), and the bottom of the anti-interference probe (27) is fixedly connected to the bottom of the base (3) via a fixing structure (28).

10. The height-limited furnace according to claim 1, characterized in that: The driving fan (31) is rotationally connected to the electromagnetic field device (30), and the driving fan (31) is electrically connected to the gas flow sensor.

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