A double-ring burner with upper air inlet

Abstract

The present invention relates to an upper air inlet double ring burner, comprising a base, which is embedded on a panel and has a gas channel inside; a nozzle, which comprises a first nozzle and a second nozzle, which are connected to the gas channel; a base, which is supported on the base, and the base comprises an inner ring seat body and an outer ring seat body arranged at intervals outside the inner ring seat body, the inner ring seat body has an inner ejection tube, and the outer ring seat body has an outer ejection tube; a fire cover, which comprises an inner ring fire cover and an outer ring fire cover, the inner ring fire cover matches and covers the inner ring seat body and forms an inner ring mixing chamber between the inner ring seat body, and the outer ring fire cover matches and covers the outer ring seat body and forms an outer ring mixing chamber between the outer ring seat body; a temperature sensing probe extending above the inner ring fire cover is arranged in the inner ring seat body, and a retaining ring is arranged on the top surface of the inner ring fire cover and extends upward along the circumferential direction, and the retaining ring is located at the inner circumference of the fire hole of the inner ring fire cover. The upper air inlet double ring burner can reduce the influence of flame, smoke, etc. on the temperature rise of the temperature sensing probe, and improve the temperature measurement accuracy and service life of the temperature sensing probe.

Description

Technical Field

[0001] The invention relates to the technical field of burners, and in particular to an upper air inlet double-ring burner. Background Art

[0002] In order to avoid the potential safety hazards caused by the dry burning of the pot, the existing burners are usually equipped with temperature probes for detecting the dry burning of the pot. In addition to conventional indicators such as smoke and efficiency, the most important thing for the anti-dry burning burner is the matching performance of the burner and the temperature probe, that is, the influence of the burner on the temperature measurement accuracy of the temperature probe testing the bottom of the pot should be as small as possible, especially the inner ring flame and smoke should have little interference with the temperature measurement of the temperature probe. In order to reduce the impact on the temperature probe, many manufacturers have launched single-ring fire burners, but this has brought many problems: such as poor fire uniformity seriously affecting cooking, it is difficult to make a small fire, and the fire cannot be made large. In the case of double-ring temperature-controlled burners, many manufacturers have introduced bottom-inlet burners, which have also brought many problems: opening and closing the cabinet door under low fire conditions will cause the flame to go out; under medium fire conditions, the change in air pressure after opening and closing the cabinet door will affect the combustion of the inner ring flame, and thus affect the temperature measurement accuracy of the temperature probe. The most prominent problem is that the bottom-inlet burner has a relatively closed cabinet and poor air circulation, and it is difficult to form a flow layer of cold air near the temperature probe. As a result, the probe is affected by high-temperature smoke and flames for a long time, which will affect the temperature measurement accuracy and service life of the temperature probe.

[0003] The Chinese invention patent application "An upper air inlet burner with anti-dry burning function" with application number CN109579010A (application number 201910027822.1) discloses an upper air inlet burner that can realize the anti-dry burning function. The burner disclosed therein includes a burner body and an ignition pulse device for controlling its combustion state. A temperature sensing probe is provided on the burner body. The temperature sensing probe is electrically connected to the ignition pulse control device. The temperature sensing probe can feed back the bottom temperature information of the pot used to the ignition pulse control device. When the temperature information of the temperature sensing probe is lower than the set value, the upper air inlet burner works normally. When the temperature information of the temperature sensing probe is higher than the set value, the ignition pulse control device can control the upper air inlet burner to stop working to avoid dry burning. However, the temperature sensing probe of the upper air inlet burner cannot avoid the influence of the flame and the high-temperature flue gas of the combustion on its temperature measurement accuracy. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an upper air inlet double-ring burner capable of isolating flames and high-temperature flue gas outside the location where the temperature sensing probe is set, in response to the above-mentioned prior art.

[0005] The second technical problem to be solved by the present invention is to provide an upper air inlet double ring burner capable of reducing the inner ring combustion load in view of the above-mentioned prior art.

[0006] The third technical problem to be solved by the present invention is to provide an upper air inlet double-ring burner capable of actively lowering the temperature of the temperature sensing probe to reduce the influence of the inner ring heat radiation on the temperature sensing probe in response to the above-mentioned prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a double-ring burner with upper air inlet, comprising

[0008] A base is embedded in the panel, and a gas passage is provided in the base;

[0009] The nozzles include a first nozzle and a second nozzle, which are arranged on the base and are respectively connected to the gas passage;

[0010] A base, supported and arranged on the base and having a gap between the base, the base comprising an inner ring base body and an outer ring base body spaced and arranged outside the inner ring base body, the inner ring base body having an inner ejection tube with an inlet facing the first nozzle, and the outer ring base body having an outer ejection tube with an inlet facing the second nozzle;

[0011] The fire cover comprises an inner ring fire cover and an outer ring fire cover, wherein the inner ring fire cover matches and covers the inner ring seat body and forms an inner ring air mixing chamber between the inner ring seat body, and the outer ring fire cover matches and covers the outer ring seat body and forms an outer ring air mixing chamber between the outer ring seat body;

[0012] It is characterized in that: a temperature sensing probe extending to the top of the inner ring fire cover is arranged in the inner ring seat body, a retaining ring is arranged on the top surface of the inner ring fire cover and extends upward in the circumferential direction, and the retaining ring is located at the inner periphery of the fire hole of the inner ring fire cover.

[0013] In order to enable the burning flame in the fire hole on the inner ring fire cover to turn outward and move further away from the temperature sensing probe and further reduce the impact on the temperature sensing probe, the fire hole on the inner ring fire cover is arranged on the outer peripheral wall of the inner ring fire cover, and the top surface of the inner ring fire cover is provided with an eaves extending radially outward and downward in the circumferential direction, and the edge of the eaves is close to the top of the fire hole on the inner ring fire cover.

[0014] An ignition needle is arranged on the base, and the upper end of the ignition needle is located beside the inner ring fire cover, and the distance between the top of the ignition needle and the edge of the baffle is smaller than the radial distance between the ignition needle and the outer peripheral wall of the inner ring fire cover. In this way, it can be ensured that the ignition needle discharges to the baffle during operation, and under the blocking effect of the baffle, the airflow velocity output by the inner ring fire hole will be reduced, which is conducive to stable and reliable ignition. At the same time, the baffle can protect the inner ring fire hole, reduce the probability of the inner ring fire hole being blocked by overflow, and further improve the success rate of ignition.

[0015] In order to better guide the overflow and avoid the influence of the overflow on the temperature sensing probe, at least one notch is circumferentially arranged on the retaining ring; the top surface of the inner ring fire cover gradually tilts downward from the inside to the outside along the radial direction.

[0016] In order to properly guide the overflowed liquid for user's convenience in wiping, a guide plate is circumferentially arranged on the outer peripheral wall of the inner ring seat body. The guide plate gradually inclines downward from the inside to the outside in the radial direction, and there is a gap between the edge of the guide plate and the outer ring seat body.

[0017] In order to prevent overflow from clogging the second nozzle and the inlet of the outer ejection tube, the inner ring seat body and the outer ring seat body are connected via the outer ejection tube, and the inlet of the outer ejection tube and the second nozzle are both located below the guide plate.

[0018] Preferably, at least two outer ejection tubes are provided, and the outer ejection tubes are evenly distributed along the circumference of the inner ring seat body, and each outer ejection tube is correspondingly provided with a second nozzle.

[0019] Preferably, each outer ejector tube is arranged tangentially to the outer peripheral wall of the inner ring seat body.

[0020] The technical solution adopted by the present invention to solve the above second technical problem is: the first nozzle is arranged at the periphery of the first nozzle, and there is an angle between the spraying direction of the first nozzle and the spraying direction of each second nozzle.

[0021] The inlet of the first nozzle and the inner ejection tube are both located below the outer ring seat.

[0022] In order to further reduce the competition between the first nozzle and the second nozzle for ejecting air, the air jets of the first nozzle and each second nozzle have different heights.

[0023] The technical solution adopted by the present invention to solve the third technical problem is as follows: the temperature sensing probe is connected to the base, an installation channel is provided through the center of the inner ring seat body from top to bottom, and the temperature sensing probe is located in the installation channel.

[0024] Preferably, the base is provided with an opening corresponding to the setting position of the temperature sensing probe.

[0025] Compared with the prior art, the advantages of the present invention are: a retaining ring structure is designed on the inner ring fire cover of the upper air inlet burner, thereby isolating the inner ring fire burning during the working process outside the temperature sensing probe, reducing the influence of the flame, smoke, etc. generated by the inner ring on the temperature rise of the temperature sensing probe, thereby improving the temperature measurement accuracy and service life of the temperature sensing probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereoscopic view of an upper air inlet double-ring burner in an embodiment of the present invention.

[0027] Figure 2 It is a three-dimensional exploded view of the upper air inlet double-ring burner in an embodiment of the present invention.

[0028] Figure 3 for Figure 2 Another perspective picture.

[0029] Figure 4 It is a cross-sectional view of an upper air inlet double-ring burner in an embodiment of the present invention.

[0030] Figure 5 It is a cross-sectional view of another section of the upper air inlet double-ring burner in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] like Figures 1 to 5 As shown, the upper air inlet double-ring burner in this embodiment includes a base 1, a nozzle 2, a pedestal 3, a fire cover 4 and a temperature sensing probe 5.

[0033] like Figure 2 and Figure 3 As shown, the base 1 is embedded in the panel 10, and the base 1 has a gas channel 11. In order to save costs, the base 1 is configured as a plate body that can be embedded in the panel 10, and a gas pipe connected to the gas supply source is provided below the plate body, and the channel in the gas pipe is the gas channel 11. In addition, a gas outlet is provided on the base 1.

[0034] The nozzle 2 includes a first nozzle 21 and a second nozzle 22 . Each of the first nozzle 21 and the second nozzle 22 corresponds to a gas outlet and is connected to the base 1 , so that the first nozzle 21 and the second nozzle 22 are connected to the gas channel 11 .

[0035] like Figure 4 and Figure 5 As shown, the base 3 is supported and arranged on the base 1 and has a gap 31 between the base 1. The base 3 includes an inner ring seat body 32 and an outer ring seat body 33 arranged at intervals on the outer periphery of the inner ring seat body 32. In this embodiment, the inner ring seat body 32 and the outer ring seat body 33 are concentrically arranged, and the gap 31 between the base 3 and the base 1 can meet the position where air enters the inner ring seat body 32, thereby providing primary air and secondary air for the inner ring mixing chamber 341 formed by the inner ring seat body 32 and the inner ring fire cover 41 described below.

[0036] The fire cover 4 includes an inner ring fire cover 41 and an outer ring fire cover 42. The inner ring fire cover 41 matches and covers the inner ring seat body 32 to form an inner ring mixing chamber 341 between the inner ring seat body 32. The outer ring fire cover 42 matches and covers the outer ring seat body 33 to form an outer ring mixing chamber 342 between the outer ring seat body 33.

[0037] The inner ring seat body 32 is provided with a temperature sensing probe 5 extending to the top of the inner ring fire cover 41. A retaining ring 411 is provided on the top surface of the inner ring fire cover 41 and extends upward in the circumferential direction. The retaining ring 411 is located at the inner circumference of the fire hole of the inner ring fire cover 41. In this embodiment, the temperature sensing probe 5 is connected to the base 1, and the base 1 is provided with an opening 12 corresponding to the setting position of the temperature sensing probe 5. An installation channel 321 is provided through the center of the inner ring seat body 32 from top to bottom, and the temperature sensing probe 5 is located in the installation channel 321. The corresponding inner ring fire cover 41 is also annular, and the inner circumferential wall of the inner ring fire cover 41 is connected with the inner circumferential wall of the installation channel 321. When the burner is working, the external air can enter the installation channel 321 through the gap 31 between the base 3 and the base 1, cool down the temperature sensing probe 5, and then reduce the influence of the flame on the inner ring fire cover 41 and the corresponding high-temperature flue gas on the detection temperature of the temperature sensing probe 5. In order to better introduce outside air, a part of the bottom of the installation channel 321 is tilted upward to form a larger air intake area. In the present embodiment, a part of the lower end of the inner ring seat body 32 is tilted upward to form a mouth for better air intake on the side of the installation channel 321.

[0038] Compared with the existing upper air inlet burner, the upper air inlet double ring burner in this embodiment has the installation channel 321 that runs through from top to bottom in the center, and the base 1 is also provided with an opening 12 to realize the atmospheric connection between the inner ring seat body 32 and the inner ring air mixing chamber 341. In addition, there is a gap between the inner ring seat body 32 and the base 1 to facilitate the outside air to enter the middle of the inner ring fire cover 41, replenish air to the inside of the inner ring flame, stabilize the combustion, and reduce the temperature fluctuation of the inner ring flame on the temperature measurement of the temperature sensing probe 5. In addition, since the combustion consumes air, it will cause the outside air to be continuously sucked in, thereby playing a role in cooling the probe and reducing the impact of high-temperature smoke on the probe. This is difficult to achieve in the existing lower air inlet anti-dry burning burner because the lower air inlet cabinet is closed and it is difficult to form a stable air flow.

[0039] The fire holes on the inner ring fire cover 41 are arranged on the outer peripheral wall of the inner ring fire cover 41. In this embodiment, the fire holes on the inner ring fire cover 41 include a circle of small fire holes arranged circumferentially and a circle of large fire holes arranged circumferentially, and the small fire holes are located above the large fire holes. The top surface of the inner ring fire cover 41 is provided with a retaining eave 412 extending radially outward and downward in the circumferential direction, and the edge of the retaining eave 412 is close to the top of the fire hole on the inner ring fire cover 41. Specifically, the edge of the retaining eave 412 is located on the axis of the small fire hole. When working, the retaining eave 412 can have an outward turning effect on the flame in the fire hole on the inner ring fire cover 41, so that the flame is as far away from the temperature sensing probe 5 as possible, protect the temperature sensing probe 5, and reduce the influence of the flame on the accurate temperature measurement of the temperature sensing probe 5. At the same time, the life of the temperature sensing probe 5 is correspondingly extended.

[0040] A retaining ring 411 is provided on the top surface of the inner ring fire cover 41 and extends upward in the circumferential direction. The retaining ring 411 is located at the inner circumference of the fire hole of the inner ring fire cover 41, thereby blocking the flame in the fire hole outside the temperature sensing probe 5 during operation, and also blocking the generated high-temperature flue gas, further reducing the influence of the flame and high-temperature flue gas on the accurate temperature measurement of the temperature sensing probe 5. At the same time, the life of the temperature sensing probe 5 is correspondingly extended.

[0041] like Figure 4 As shown, an ignition needle 6 is provided on the base 1, and the upper end of the ignition needle 6 is located next to the inner ring fire cover 41, and the distance between the top of the ignition needle 6 and the edge of the barrier eaves 412 is smaller than the radial distance between the ignition needle 6 and the outer peripheral wall of the inner ring fire cover 41. In this way, it can be ensured that the ignition needle 6 discharges to the barrier eaves 412 during operation, and the gas at the barrier eaves 412 mainly comes from the flame-stabilizing small fire holes arranged on the inner ring fire cover 41. First, the aperture of the flame-stabilizing small fire holes is small and the airflow speed is slow. Secondly, the airflow is blocked by the barrier eaves 412, and the airflow speed is further reduced, which is conducive to stable and reliable ignition. In addition, the barrier eaves 412 just covers the small fire holes on the inner ring fire cover 41, and the overflow flowing down from the barrier eaves 412 will not block the small fire holes on the inner ring fire cover 41. Even if the large holes are blocked, it will not affect the success rate of ignition.

[0042] The lower part of the inner ring seat body 32 has an inner ejection tube 34 with an inlet facing the first nozzle 21, and the lower part of the outer ring seat body 33 has an outer ejection tube 35 with an inlet facing the second nozzle 22. In this embodiment, the inner ring seat body 32 and the outer ring seat body 33 are connected by the outer ejection tube 35.

[0043] In this embodiment, at least two outer ejector tubes 35 are provided to meet the outer ring's demand for more gas, and each outer ejector tube 35 is evenly distributed along the circumference of the inner ring seat body 32, and each outer ejector tube 35 is tangentially connected to the outer peripheral wall of the inner ring seat body 32, and each outer ejector tube 35 is correspondingly provided with a second nozzle 22. In this embodiment, two outer ejector tubes 35 are provided.

[0044] like Figure 3As shown, the inner ejector tube 34 is provided with one, and the first nozzle 21 is arranged on the outer periphery of the first nozzle 21, so that the air supply of the first nozzle 21 is stable, so that the inner ring combustion of the burner is stable, and the temperature fluctuation effect on the working process of the temperature sensing probe 5 is correspondingly reduced. And there is an angle between the injection direction of the first nozzle 21 and the injection direction of each second nozzle 22. In this embodiment, the axial directions of the two ejector tubes are parallel and the inlet directions are opposite. The first nozzle 21 is arranged close to a second nozzle 22, and the angle between the injection direction of the first nozzle 21 and the injection direction of the second nozzle 22 close to it is 45°, so that the injection direction of the first nozzle 21 is different from the injection direction of the two second nozzles 22. And the height of the jet port of the first nozzle 21 is different from that of each second nozzle 22. According to the number of second nozzles 22, the height of the jet port of each second nozzle 22 can be set at the same height, or the height of the jet port of each second nozzle 22 can be set at different heights. In this embodiment, the jet port heights of the two second nozzles 22 are at the same height, and the height of the first nozzle 21 is lower than that of the second nozzle 22. The position arrangement of the first nozzle 21 and the second nozzle 22 in this embodiment avoids the competition between the first nozzle 21 and the second nozzle 22 for the induced air both horizontally and in height, thereby improving the air induced capacity of the inner and outer rings of the burner, thereby greatly improving the combustion efficiency of the burner.

[0045] Conventional upper air inlet burners arrange the inner ring nozzle 2 that cooperates with the inner ejector tube 34 at the innermost side. During the combustion process, the inner ring load changes greatly, and the flame shape also changes and increases. There is a problem that the inner ring nozzle 2 is severely heated, which in turn affects the temperature measurement accuracy of the temperature sensing probe 5. This embodiment is different from the setting method of the inner ring nozzle 2 in the existing upper air inlet burner. The first nozzle 21 is arranged on the outside of the second nozzle 22 to reduce the heat effect of the first nozzle 21 during the operation of the burner, and correspondingly reduce the temperature measurement effect on the temperature sensing probe 5. Placing the first nozzle 21 on the outside can also prevent the small fire from automatically extinguishing due to pressure changes when opening and closing the cabinet door.

[0046] like Figure 2 As shown, in this embodiment, the outlet of the inner ejector tube 34 on the inner ring seat body 32 is located on the opposite side of the upward inclined portion of the lower end of the inner ring seat body 32, so that the gas entering the inner ring mixing chamber 341 forms a vortex, which increases the mixing path, makes the airflow mixing more complete, and also increases the flow speed of the mixed gas.

[0047] On the outer ring seat body 33, the bottom plate of the outer ring mixing chamber 342 is between the outlets of the two outer ejector tubes 35, and gradually tilts upward from the inlet of the outer ejector tube 35, so that the gas entering the outer ring mixing chamber 342 forms a vortex, increasing the mixing path, making the airflow mixing more complete, while also increasing the flow speed of the mixed gas and improving the combustion efficiency.

[0048] like Figure 3 As shown, in addition, in this embodiment, the inlets of the first nozzle 21 and the inner ejection tube 34 are both located below the outer ring seat 33, thereby preventing the downstream overflow from clogging the inlet of the first nozzle 21 or the inner ejection tube 34, thereby ensuring that the first nozzle 21 and the inner ejection tube 34 can work normally.

[0049] like Figure 1 , Figure 4 and Figure 5 As shown, at least one notch 4111 is circumferentially provided on the retaining ring 411, and the number of notches 4111 is specifically set according to needs. In this embodiment, four notches 4111 are provided, and each notch 4111 extends downward to the top surface of the inner ring fire cover 41. The top surface of the inner ring fire cover 41 gradually tilts downward from the inside to the outside in the radial direction. A guide plate 7 is circumferentially provided on the outer peripheral wall of the inner ring seat body 32, and the guide plate 7 gradually tilts downward from the inside to the outside in the radial direction, and the edge of the guide plate 7 can extend to the outside of the outer ring seat body 33 and there is a gap between the guide plate 7 and the outer ring seat body 33. The inlet of the outer ejector tube 35 and the second nozzle 22 are both located below the guide plate 7. In addition, in this embodiment, the top surface of the outer ring fire cover 42 also gradually tilts downward from the inside to the outside in the radial direction.

[0050] During operation, if overflow occurs, when the overflow flows to the outer ring fire cover 42, it is drained to the panel 10 under the diversion effect of the inclined top surface of the outer ring fire cover 42. When the overflow flows to the inner ring fire cover 41, the top surface of the inner ring fire cover 41 diverts the overflow outward, and the overflow located on the inner side of the retaining ring 411 will also be diverted outward from the notch 4111 on the retaining ring 411 to prevent the overflow from sticking to the temperature sensing probe 5 and affecting the operation of the temperature sensing probe 5. At the same time, the drained overflow will be drained by the eaves 412 to the guide plate 7, and then flow to the position outside the base 3 on the panel 10, which is convenient for the user to wipe and clean. During the overflow drainage process, the eaves 412 can protect the fire holes on the inner ring fire cover 41 to prevent the fire holes on the inner ring fire cover 41 from being blocked. At the same time, the guide plate 7 can guide the overflow on the one hand, and protect the inlet of the external injection tube 35 and the second nozzle 22 on the other hand, thereby preventing the overflow from clogging the inlet of the external injection tube 35 and the second nozzle 22.

Claims

1. A double-ring burner with upper air inlet, comprising A base (1) is embedded in the panel (10), and a gas passage (11) is provided in the base (1); The nozzle (2) comprises a first nozzle (21) and a second nozzle (22), which are arranged on the base (1) and are respectively connected to the gas channel (11); A base (3) is supported and arranged on the base (1) and has a gap (31) between the base (1), the base (3) comprising an inner ring base body (32) and an outer ring base body (33) arranged at intervals on the outer periphery of the inner ring base body (32), the inner ring base body (32) having an inner ejection tube (34) with an inlet facing the first nozzle (21), and the outer ring base body (33) having an outer ejection tube (35) with an inlet facing the second nozzle (22); The fire cover (4) comprises an inner ring fire cover (41) and an outer ring fire cover (42), wherein the inner ring fire cover (41) matches and covers the inner ring seat body (32) and forms an inner ring air mixing chamber (341) with the inner ring seat body (32), and the outer ring fire cover (42) matches and covers the outer ring seat body (33) and forms an outer ring air mixing chamber (342) with the outer ring seat body (33); Features: The inner ring seat body (32) is provided with a temperature sensing probe (5) extending to the top of the inner ring fire cover (41); a retaining ring (411) is provided on the top surface of the inner ring fire cover (41) and extends upward in the circumferential direction; the retaining ring (411) is located at the inner circumference of the fire hole of the inner ring fire cover (41); The fire holes on the inner ring fire cover (41) are arranged on the outer peripheral wall of the inner ring fire cover (41), and a retaining eave (412) is arranged on the top surface of the inner ring fire cover (41) extending radially outward and downward in the circumferential direction, and the edge of the retaining eave (412) is close to the top of the fire holes on the inner ring fire cover (41); An ignition needle (6) is arranged on the base (1), the upper end of the ignition needle (6) is located beside the inner ring fire cover (41), and the distance between the top of the ignition needle (6) and the edge of the retaining eaves (412) is smaller than the radial distance between the ignition needle (6) and the outer peripheral wall of the inner ring fire cover (41); At least one notch (4111) is provided on the retaining ring (411) along the circumferential direction; the top surface of the inner ring fire cover (41) gradually slopes downward from the inside to the outside along the radial direction; A guide plate (7) is circumferentially arranged on the outer peripheral wall of the inner ring seat body (32), the guide plate (7) gradually tilts downward from the inside to the outside in the radial direction, and there is a gap between the edge of the guide plate (7) and the outer ring seat body (33); The temperature sensing probe (5) is connected to the base (1); a mounting channel (321) is provided through the center of the inner ring base body (32) from top to bottom, and the temperature sensing probe (5) is located in the mounting channel (321).

2. The upper air inlet double ring burner according to claim 1 is characterized in that: The inner ring seat body (32) and the outer ring seat body (33) are connected via an external ejection tube (35), and the inlet of the external ejection tube (35) and the second nozzle (22) are both located below the guide plate (7).

3. The upper air inlet double ring burner according to claim 2 is characterized in that: At least two external ejection tubes (35) are provided, each external ejection tube (35) is arranged along the inner The ring seat body (32) is evenly distributed in the circumferential direction, and each outer ejection tube (35) is correspondingly provided with a second nozzle (22).

4. The upper air inlet double ring burner according to claim 3 is characterized in that: Each outer ejector tube (35) is tangent to the outer peripheral wall of the inner ring seat body (32).

5. The upper air inlet double ring burner according to claim 3 or 4, characterized in that: The first nozzle (21) is arranged at the periphery of the first nozzle (21), and an angle is formed between the spraying direction of the first nozzle (21) and the spraying direction of each second nozzle (22).

6. The upper air inlet double ring burner according to claim 5, characterized in that: The inlet of the first nozzle (21) and the inner ejection tube (34) are both located below the outer ring seat (33).

7. The up-inlet double-ring burner according to claim 3 or 4, characterized in that: The jet ports of the first nozzle (21) and each of the second nozzles (22) have different heights.

8. The up-inlet double-ring burner according to claim 1, characterized in that: The base (1) is provided with an opening (12) corresponding to the location where the temperature sensing probe (5) is provided.

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