CN121184801B - Burners and stoves - Google Patents

Abstract

The application discloses a burner and a stove, and belongs to the technical field of gas stoves. The burner comprises a main body and a fan assembly, wherein the main body is provided with a gas blowing channel, at least one smoke reflux channel and a plurality of fire outlets, the gas blowing channel is provided with a first inlet and a first outlet, the smoke reflux channel is provided with a smoke reflux port and a smoke outlet, the first inlet is communicated with the smoke outlet, the first outlet is communicated with at least part of the fire outlets, the first outlet, the smoke reflux port and the fire outlets are all arranged upwards, at least part of the fan assembly is arranged in the main body, and the fan assembly is used for forming air flow flowing from the first inlet to the fire outlets in the gas blowing channel. The residence time of the flue gas generated by the burner can be prolonged, so that the heat exchange effect of the flue gas and the bottom of the cooker is improved, and the heat efficiency is further improved.

Description

Burner and kitchen range

Technical Field

The application relates to the technical field of gas stoves, in particular to a combustor and a stove.

Background

A kitchen range is a kitchen appliance commonly used in daily life of a family, and the kitchen range generally comprises a pot rack and a burner, wherein the pot rack is arranged on the periphery of the burner in a surrounding manner and is used for bearing a cooker, and the burner is used for heating the cooker.

However, in the related art, high-temperature flue gas generated during the operation of the burner can flow out rapidly from a gap between the pot rack and the pot, and the residence time of the high-temperature flue gas is short, so that the heat exchange effect between the flue gas and the bottom of the pot is poor, thereby resulting in lower thermal efficiency.

Disclosure of Invention

The embodiment of the application provides a combustor and a stove, which can prolong the residence time of flue gas generated by the combustor, thereby improving the heat exchange effect with the bottom of a cooker and further improving the heat efficiency.

In a first aspect, an embodiment of the present application provides a burner, including:

The main body is provided with a gas blowing channel, at least one smoke reflux channel and a plurality of fire outlets, the gas blowing channel is provided with a first inlet and a first outlet, the smoke reflux channel is provided with a smoke reflux port and a smoke outlet, the first inlet is communicated with the smoke outlet, the first outlet is communicated with at least part of the fire outlets, and the first outlet, the smoke reflux port and the fire outlets are all arranged upwards, and

The fan assembly is at least partially arranged in the main body and is used for forming air flow flowing from the first inlet to the fire outlet in the air blowing channel.

In some embodiments of the application, the body comprises:

The support is provided with an accommodating cavity, and an air inlet channel communicated with the fire outlet hole is arranged on the support;

The distributor is at least partially installed in the accommodating cavity, the distributor is provided with the air blowing channel and a plurality of fire outlet holes, and the flue gas outlet is communicated with the first inlet through the accommodating cavity.

In some embodiments of the application, the outer peripheral side wall of the distributor and the inner peripheral side wall of the support are spaced apart to form one of the flue gas recirculation passages.

In some embodiments of the application, the distributor comprises:

The inner fire cover is connected with the support, and the air blowing channel is positioned on the inner fire cover;

The outer fire cover is connected with the support and is arranged around the periphery of the inner fire cover;

The air-blowing device comprises a plurality of air-blowing channels, a plurality of air-blowing holes, a plurality of first outlets, a plurality of second outlets, a plurality of first outer fire holes, a plurality of second outer fire holes and a plurality of first outer fire holes, wherein the plurality of air-blowing holes comprise a plurality of inner fire holes and a plurality of outer fire holes, the plurality of inner fire holes are arranged in the inner fire cover, the plurality of inner fire holes surround the periphery of the air-blowing channels, the first outlets are communicated with the inner fire holes, the plurality of outer fire holes are arranged in the outer fire cover, and the plurality of outer fire holes are arranged on the outer fire cover at intervals and in a circumference.

In some embodiments of the application, the inner fire cover has a first chamber provided around a peripheral side of the air-blowing passage, the air-intake passage communicates with the inner fire hole through the first chamber, and the first chamber communicates with the first outlet.

In some embodiments of the application, the outer fire cover is spaced from the inner fire cover to form the smoke return channel between the outer fire cover and the inner fire cover.

In some embodiments of the present application, a gas-compensating port is provided on the support and communicates with the accommodating chamber, the gas-compensating port communicates with the first inlet, and the gas-compensating port is used for flowing external gas into the first inlet.

In some embodiments of the present application, the support further has a through hole, and the fan assembly includes:

The fan blades are arranged in the air blowing channel;

the driving piece is arranged outside the air blowing channel, and a driving shaft of the driving piece penetrates through the through hole and is in transmission connection with the fan blade so as to drive the fan blade to rotate, and air flow flowing from the first inlet to the first outlet is formed in the air blowing channel.

In some embodiments of the application, the support further has a gas inlet in communication with the inlet passage, the gas inlet being spaced from the through hole.

In some embodiments of the application, at least a portion of the drive shaft extends within and along the intake passage, and the driver is located outside the intake passage.

In some embodiments of the present application, the distributor and the bottom wall surface of the accommodating cavity are arranged at intervals to form a connection channel, a surrounding structure extending towards a direction close to the connection channel is arranged on the distributor, the surrounding structure surrounds and forms part of the air blowing channel, the first inlet is arranged on the surrounding structure, and the first inlet is communicated with the flue gas outlet through the connection channel.

In some embodiments of the application, an insulating layer is disposed in the body.

In a second aspect, embodiments of the present application also provide a cooktop comprising a pot holder and a burner as described in any of the embodiments above, the pot holder being disposed around the periphery of the burner.

In some embodiments of the application, the stove further comprises a support plate, the burner is arranged on the support plate, and an annular step structure is arranged on the support plate;

The pot rack comprises an annular piece and a plurality of pot supporting feet, the annular piece surrounds the periphery of the combustor, the annular piece is arranged on the step structure, and the pot supporting feet are arranged on the annular piece at intervals.

According to the burner and the stove provided by the embodiment of the application, the smoke circulation loop and the fan assembly are arranged in the main body to drive the airflow to be sprayed to the bottom of the cooker through the fire outlet, so that the smoke disturbance of the bottom of the cooker is enhanced, then the airflow is blocked by the bottom of the cooker and diffuses to the periphery along the bottom of the cooker, further, a drainage effect is generated on high-temperature smoke at the top of the burner, part of the high-temperature smoke is pushed to enter the smoke reflux channel through the smoke reflux port and then enters the air blowing channel again from the first inlet through the smoke outlet, so that circulation flow is formed, in the process, when the smoke enters the fire outlet, part of heat can be transferred to the mixed gas of the gas and the primary air by the high-temperature smoke, so that the mixed gas is heated, part of the smoke is repeatedly guided to the bottom of the cooker, the stay time of the high-temperature smoke is prolonged, the contact heat exchange between the high-temperature smoke and the bottom of the cooker is increased, the smoke discharging temperature is effectively reduced, the heat loss of the high-temperature smoke is reduced, the heat energy efficiency of the smoke and the bottom of the cooker is more fully improved, and the whole heat utilization efficiency of the burner is improved. Meanwhile, due to the circulation flow of part of the flue gas, the combustible components which are not completely combusted in the flue gas can participate in combustion again in the circulation process, so that the heat loss caused by incomplete combustion is reduced, the emission of nitrogen oxides is reduced, the combustion efficiency is further improved, and the emission performance is improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a burner according to an embodiment of the present application;

FIG. 2 is a schematic view of a first view in cross section of a portion of a burner according to an embodiment of the present application;

FIG. 3 is a schematic view of the flow direction of the air flow in the burner according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a second view in cross-section of a portion of a burner according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a fan assembly according to an embodiment of the present application;

FIG. 6 is a schematic view of a burner bottom structure according to an embodiment of the present application;

FIG. 7 is a schematic view of a stove according to an embodiment of the present application;

Fig. 8 is a schematic view of a kitchen range and a cooker according to an embodiment of the application.

Reference numerals:

100. A burner;

10. The main body comprises 11 parts of a gas blowing channel, 111 parts of a first inlet, 112 parts of a first outlet, 12 parts of a flue gas backflow channel, 121 parts of a flue gas backflow port, 122 parts of a flue gas outlet, 123 parts of a first backflow channel, 124 parts of a second backflow channel, 13 parts of a fire outlet, 131 parts of an inner fire hole, 132 parts of an outer fire hole, 14 parts of a support, 141 parts of an air inlet channel, 142 parts of a gas supplementing port, 143 parts of a through hole, 144 parts of a gas inlet, 15 parts of a distributor, 151 parts of an inner fire cover, 1511 parts of a first chamber, 152 parts of an outer fire cover, 16 parts of a connecting channel, 161 parts of a communication port, 17 parts of a surrounding structure, 18 parts of a heat insulation layer;

20. fan assembly 21, fan blade 22, driving piece 23, driving shaft;

31. A gas passage, 32, an air passage;

200. a stove;

40. A pot holder; 41, annular parts 42, pot support legs;

50. A support plate 51, a step structure;

300. A pot.

Detailed Description

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the following description will be made in detail with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the related art, many stoves are open-type combustion, a certain space is arranged between a cooker and a burner, and in the actual use process, heat generated by the burner is used for heating the cooker, and a considerable part of heat is lost through high-temperature flue gas, so that the heat transfer efficiency is reduced, and the heat efficiency is lower.

In view of the above, referring to fig. 1-2, the present application proposes a burner 100, which includes a main body 10 and a fan assembly 20.

The main body 10 is provided with a gas blowing channel 11, at least one smoke reflux channel 12 and a plurality of fire outlets 13, the gas blowing channel 11 is provided with a first inlet 111 and a first outlet 112, the smoke reflux channel 12 is provided with a smoke reflux mouth 121 and a smoke outlet 122, the first inlet 111 is communicated with the smoke outlet 122, the first outlet 112 is communicated with at least part of the fire outlets 13, and the first outlet 112, the smoke reflux mouth 121 and the fire outlets 13 are all arranged upwards. The smoke return port 121 and the fire hole 13 face the top of the main body 10, and part of the smoke can flow into the air blowing channel 11 through the smoke return channel 12, and finally enter part of the fire hole 13 from the first outlet 112, so that the mixed gas containing the gas, the primary air and the high-temperature smoke is sprayed out of the fire hole 13 and is ignited by the ignition device to generate flame. The number of the fire holes 13 may be two, three, four or more, and the present application does not particularly limit the number of the fire holes 13.

At least part of the blower assembly 20 is disposed in the main body 10, and the blower assembly 20 is configured to form an air flow flowing from the first inlet 111 to the fire hole 13 in the air blowing passage 11.

Specifically, the flame burns at the top of the burner 100, the generated high-temperature flue gas surrounds the top of the burner 100, and because the fan assembly 20 generates air flow, the air flow is sprayed to the bottom of the pot 300 from the first outlet 112 through the fire outlet 13, so that flue gas disturbance at the bottom of the pot 300 can be enhanced (as shown in fig. 8), part of the high-temperature flue gas at the top of the burner 100 is promoted to enter the flue gas backflow channel 12 through the flue gas backflow port 121, then flows into the first inlet 111 through the flue gas outlet 122, finally enters the air blowing channel 11 and is sprayed to the bottom of the pot 300 through the fire outlet 13 under the action of the fan assembly 20, and the waste heat recycling of the high-temperature flue gas can be realized in the process, so that the heat loss of discharged flue gas is reduced, and the heat efficiency of the burner 100 is improved.

It should be noted that, in the related art, a certain space is provided between the pan 300 and the pan frame 40, and in the actual use process, the high-temperature flue gas generated by the operation of the burner 100 flows out rapidly from the gap between the pan 300 and the pan frame 40, so that the residence time of the high-temperature flue gas is short, the heat exchange effect between the flue gas and the bottom of the pan 300 is poor, and the thermal efficiency is low. In the present application, as shown in fig. 2-3, by arranging the smoke circulation loop and the fan assembly 20 in the main body 10 to drive the air flow to be sprayed to the bottom of the boiler 300 through the fire outlet 13, the disturbance of the smoke at the bottom of the boiler 300 is enhanced, then the air flow is blocked by the bottom of the boiler 300, and diffuses to the periphery along the bottom of the boiler 300, thereby generating a drainage effect on the high-temperature smoke at the top of the burner 100, pushing part of the high-temperature smoke to enter the smoke return channel 12 through the smoke return port 121, and then reentering the air blowing channel 11 from the first inlet 111 through the smoke outlet 122, so as to form a circulation flow.

Meanwhile, due to the circulation flow of part of the flue gas, the combustible components which are not completely combusted in the flue gas can participate in combustion again in the circulation process, so that the heat loss caused by incomplete combustion is reduced, the emission of nitrogen oxides is reduced, the combustion efficiency is further improved, and the emission performance is improved. In addition, the introduction of the fan assembly 20 not only can enhance the controllability of the flow of the flue gas, but also can realize efficient combustion matching under different fire requirements by adjusting the airflow speed of the fan assembly 20.

Referring to fig. 1 to 4, in some embodiments of the present application, the main body 10 includes a support 14 and a distributor 15, the support 14 has a receiving cavity, an air inlet channel 141 communicating with the fire outlet 13 is provided on the support 14, at least part of the distributor 15 is installed in the receiving cavity, the distributor 15 has an air blowing channel 11 and a plurality of fire outlet 13, and a flue gas outlet 122 communicates with the first inlet 111 through the receiving cavity.

Specifically, the distributor 15 is installed in the accommodating cavity of the support 14, the support 14 provides a stable support for the installation of the distributor 15, the mixed gas of the fuel gas and the primary air is conveyed to the fire outlet 13 of the distributor 15 through the air inlet channel 141 and is ignited by the ignition device at the fire outlet 13 to generate flame, and the flue gas in the flue gas backflow channel 12 can reenter the air blowing channel 11 through the accommodating cavity and is sprayed to the bottom of the pot 300 from the fire outlet 13, so that the recycling of the flue gas is realized.

In some embodiments, the burner 100 further includes a gas passage 31, an air passage 32, and a mixing chamber, the gas passage 31 and the air passage 32 are all in communication with the mixing chamber, the gas passage 31 is used for introducing gas into the mixing chamber, the air passage 32 is used for introducing primary air into the mixing chamber, the mixing chamber is in communication with the air inlet passage 141, the gas and the primary air form a mixed gas after mixing in the mixing chamber, and then the mixed gas is ejected from the fire hole 13 through the air inlet passage 141.

Further, referring to fig. 3 to 4, in some embodiments of the present application, the distributor 15 is spaced from the bottom wall surface of the accommodating cavity to form a connection channel 16, a shielding structure 17 extending in a direction close to the connection channel 16 is disposed on the distributor 15, the shielding structure 17 encloses to form a part of the air-blowing channel 11, the first inlet 111 is disposed on the shielding structure 17, and the connection channel 16 is connected to the air-blowing channel 11 through the first inlet 111.

Specifically, a gap is reserved between the distributor 15 and the bottom wall of the accommodating cavity of the support 14, the gap forms a connecting channel 16, a flue gas outlet 122 of the flue gas backflow channel 12 is positioned above the connecting channel 16, flue gas is discharged through the flue gas outlet 122 and then enters the connecting channel 16 formed by the gap, and then flows into the air blowing channel 11 through a first inlet 111 on the enclosing structure 17, so that secondary recycling of the flue gas is realized. The area of the first inlet 111 of the air-blowing channel 11 can be reduced by the arrangement of the enclosure structure 17, so that the air-intake path of the air-blowing channel 11 is more concentrated, and the flow rate of the flue gas flowing into the air-blowing channel 11 can be enhanced.

In some embodiments, as shown in fig. 1-4, the connection channel 16 is provided with a plurality of communication ports 161 communicated with the flue gas outlet 122, the plurality of communication ports 161 are arranged at intervals along the circumference of the air blowing channel 11, and the flue gas outlet 122 surrounds the circumference of the air blowing channel 11, so that the total opening area of the plurality of communication ports 161 is smaller than the opening area of the flue gas outlet 122, and the flue gas is locally pressurized when entering the connection channel 16 from the flue gas outlet 122, so that the flow rate and the kinetic energy of the flue gas when flowing into the connection channel 16 are improved, and the circulating power of the flue gas is effectively enhanced.

Further, as shown in fig. 1-2, the outer peripheral sidewall of the distributor 15 is spaced from the inner peripheral sidewall of the support 141 to form a flue gas recirculation channel 12.

The support 14 and the distributor 15 together form a smoke circulation path, a gap between the support 14 and the distributor 15 provides an independent channel for smoke backflow, air flow generated by the fan assembly 20 is sprayed out through the fire outlet 13, high-temperature smoke at the bottom of the pot 300 is ensured to enter the smoke backflow channel 12 positioned at the periphery of the distributor 15 from the smoke backflow port 121 under the action of the air flow, and the smoke backflow channel 11 is reentered from the first inlet 111 through the connecting channel 16, so that the directional backflow and the cyclic utilization of the high-temperature smoke are realized. Specifically, taking the high-temperature flue gas generated by flame burning at the flame outlet hole 13 as the first flue gas as an example, the direction indicated by the dotted arrow a in fig. 3 is the airflow flowing direction formed by the fan assembly 20, the direction indicated by the dotted arrow B is the flowing direction of the first flue gas, and the through of the flue gas backflow channel 12 is realized by utilizing the structural fit between the support 14 and the distributor 15, so that the high-temperature flue gas forms an orderly backflow path in the burning process, which is favorable for reducing unordered dissipation of the flue gas, thereby improving the heat energy utilization rate of the burner 100.

Referring to fig. 4, in some embodiments of the present application, the distributor 15 includes an inner flame cover 151 and an outer flame cover 152, the inner flame cover 151 is connected to the support 14, the air-blowing passage 11 is located in the inner flame cover 151, the outer flame cover 152 is connected to the support 14, and the outer flame cover 152 is disposed around the circumference of the inner flame cover 151. The plurality of fire outlets 13 comprise a plurality of inner fire holes 131 and a plurality of outer fire holes 132, the plurality of inner fire holes 131 are arranged on the inner fire cover 151, the plurality of inner fire holes 131 are distributed around the periphery of the air blowing channel 11, the first outlets 112 are communicated with the inner fire holes 131, the plurality of outer fire holes 132 are arranged on the outer fire cover 152, and the plurality of outer fire holes 132 are distributed on the outer fire cover 152 at intervals and in a circumference.

It can be appreciated that the plurality of inner fire holes 131 on the inner fire cover 151 and the plurality of outer fire holes 132 on the outer fire cover 152 can form annular flames, and the two can cooperate to realize uniform distribution of fire power, thereby improving combustion stability and thermal efficiency. The inner fire cover 151 and the outer fire cover 152 are respectively provided with a communication cavity, and the mixed gas conveyed by the air inlet channel 141 is conveyed to the inner fire hole 131 and the outer fire hole 132 respectively through the communication cavities in the inner fire cover 151 and the outer fire cover 152, so that the uniform distribution of the mixed gas is ensured. The number of the inner fire holes 131 may be two, three, four or more, and the number of the inner fire holes 131 is not particularly limited in the present application, and the number of the outer fire holes 132 may be two, three, four or more, and the number of the outer fire holes 132 is not particularly limited in the present application.

Specifically, after the air flow sprayed out by the fan assembly 20 is sprayed out through the inner fire hole 131, the air flow is blocked by the bottom of the cooker 300 and diffuses to the periphery along the bottom of the cooker 300, so that a drainage effect is generated on high-temperature flue gas at the bottom of the cooker 300, the high-temperature flue gas at the bottom of the cooker 300 is pushed to enter the flue gas backflow channel 12 along the flue gas backflow port 121 between the inner fire cover 151 and the outer fire cover 152, and the flue gas flows into the air blowing channel 11 again from the first inlet 111 through the connecting channel 16, so that the directional backflow and the cyclic utilization of the high-temperature flue gas are realized, the combustion efficiency is effectively improved, and the pollutant emission is reduced.

Further, as shown in fig. 4, the outer fire cover 152 is spaced apart from the inner fire cover 151 to form a smoke return path 12 between the outer fire cover 152 and the inner fire cover 151.

It will be appreciated that the flue gas recirculation passage 12 is located at the periphery of the inner fire cover 151, i.e. the fire outlets 13 on the inner fire cover 151 are all located inside the flue gas recirculation passage 12. The flue gas reflux passage 12 is formed by a gap between the outer fire cover 152 and the inner fire cover 151, the gap extends from the top to the bottom of the outer fire cover 152 and the inner fire cover 151 and is communicated with the connecting passage 16 at the bottom to form a continuous through reflux path, and the split design is carried out on the structure of the distributor 15, so that the interval between the outer fire cover 152 and the inner fire cover 151 is used for forming the flue gas reflux passage 12, a flue gas reflux structure is not required to be independently arranged, the whole assembly process is simplified, and the utilization rate of the internal space of the combustor 100 is improved.

Further, the flue gas backflow channel 12 is an annular structure surrounding the periphery of the air blowing channel 11, and the flue gas backflow channel 12 with the annular structure can enable more high-temperature flue gas to flow back and enable the high-temperature flue gas to be uniformly distributed in the annular channel.

In some embodiments, as shown in fig. 3-4, the flue gas backflow channel 12 formed between the outer peripheral side wall of the distributor 15 and the inner peripheral side wall of the support 14 is a first backflow channel 123, the flue gas backflow channel 12 formed between the outer fire cover 152 and the inner fire cover 151 is a second backflow channel 124, the first backflow channel 123 and the second backflow channel 124 can be simultaneously arranged in the combustor 100, and the first backflow channel 123 and the second backflow channel 124 can be in annular structures, are coaxial and are in nested arrangement, form a double-layer annular flue gas backflow path, and the first backflow channel 123 and the second backflow channel 124 are communicated through the connecting channel 16 in the support 14, so that the high-temperature flue gas can realize multistage backflow in the combustion process.

Illustratively, the high-temperature flue gas generated by the flame burning at the outer flame holes 132 is a first flue gas, the high-temperature flue gas generated by the flame burning at the inner flame holes 131 is a second flue gas, the direction indicated by the dashed arrow a in fig. 3 is the airflow flowing direction formed by the fan assembly 20, the direction indicated by the dashed arrow B is the flowing direction of the first flue gas, and the direction indicated by the dashed arrow C is the flowing direction of the second flue gas. The air flow formed by the fan assembly 20 is sprayed to the bottom of the pan 300 through the inner fire holes 131, then the air flow is blocked by the bottom of the pan 300 and diffuses to the periphery along the bottom of the pan 300, so that part of surrounding first smoke is pushed to enter the second backflow channel 124, part of the first smoke is pushed to enter the first backflow channel 123, and then the smoke in the first backflow channel 123 and the smoke in the second backflow channel 124 are mixed and re-enter the air blowing channel 11 from the first inlet 111 through the connecting channel 16, so that circulating flow is formed.

Further, as shown in fig. 4, the inner flame cover 151 has a first chamber 1511 provided around the peripheral side of the air-blowing passage 11, the air-intake passage 141 communicates with the inner flame hole 131 through the first chamber 1511, and the first chamber 1511 communicates with the first outlet 112.

It will be appreciated that the first chamber 1511 acts as a mixing chamber for the gases to further promote mixing of the fuel gas, primary air and flue gas, raise the temperature of the mixed gases, and then eject the mixed gases through the inner fire holes 131. The fan assembly 20 generates an air flow, the air flow reaches the first chamber 1511 from the first outlet 112, and then is sprayed out from the first chamber 1511 through the inner fire hole 131, and is blocked by the pan 300 to form bottom air flow diffusion, so that high-temperature flue gas is driven to enter the annular flue gas backflow channel 12 through the flue gas backflow port 121, and flows back to the air blowing channel 11 along the connecting channel 16, and heat energy recycling is achieved.

Referring to fig. 1-2, in some embodiments of the present application, a gas-filling port 142 is provided on the support 14 and communicates with the accommodating chamber, the gas-filling port 142 communicates with the first inlet 111, and the gas-filling port 142 is used for allowing external gas to flow into the first inlet 111.

Specifically, the air supply port 142 is configured to introduce external air, secondary air entering the connection passage 16 through the air supply port 142, and the direction indicated by the dashed arrow D in fig. 3 is the flow direction of the secondary air, and the secondary air is mixed with the high-temperature flue gas flowing back in the connection passage 16, sucked into the air-blowing passage 11 by the fan assembly 20, and ejected from the inner flame holes 131. The secondary air can be recycled to be preheated by the waste heat of the high-temperature flue gas and enter the combustion area again to participate in combustion, and the temperature of the secondary air is improved to help to improve the combustion efficiency.

Meanwhile, as the fan assembly 20 generates air flow flowing from the first inlet 111 to the first outlet 112 and then towards the fire hole 13 in the air blowing channel 11, negative pressure is generated in the connecting channel 16 through the first inlet 111, and then secondary air in the connecting channel 16 and high-temperature back flow flue gas are driven to be sucked into the air blowing channel 11 through the first inlet 111, the negative pressure effect is helpful for enhancing the back flow efficiency of the flue gas, and is helpful for sucking more external air from the air supplementing port 142, so that the supplementing amount of the secondary air is improved.

In some embodiments, the plurality of air-compensating ports 142 may be disposed, the plurality of air-compensating ports 142 are uniformly spaced along the circumference of the support 14, the air inlet of the connecting channel 16 extends around the circumference of the support 14 and communicates with each air-compensating port 142, so as to ensure that the secondary air flows uniformly, and the plurality of air-compensating ports 142 cooperate with the connecting channel 16 to enable the external air to efficiently enter under the negative pressure. The air compensating ports 142 may be disposed on a side wall or a bottom wall of the support 14, and the number and positions thereof may be adjusted according to the structure of the burner 100 to ensure uniform feeding of secondary air, the cross-sectional shape of the air compensating ports 142 may be circular, elliptical or polygonal, and the positions of the air compensating ports 142 should also be considered to avoid high temperature concentration areas, so as to avoid deformation or carbon deposition of the air compensating ports 142 due to local overheating.

Referring to fig. 4-6, in some embodiments of the present application, the support 14 further has a through hole 143, the fan assembly 20 includes a fan blade 21 and a driving member 22, the fan blade 21 is disposed in the air-blowing channel 11, the driving member 22 is disposed outside the air-blowing channel 11, and a driving shaft 23 of the driving member 22 passes through the through hole 143 and is in driving connection with the fan blade 21 to drive the fan blade 21 to rotate, and an air flow flowing from the first inlet 111 to the fire hole 13 is formed in the air-blowing channel 11.

Specifically, the driving member 22 drives the fan blades 21 to rotate in the air-blowing channel 11 through the driving shaft 23, so as to generate an air flow flowing from the first inlet 111 via the first outlet 112 towards the fire hole 13, and the air flow drives the connection channel 16 and the mixed gas (flue gas and secondary air) in the air-blowing channel 11 to be ejected towards the fire hole 13 at a high speed, so that stable air flow circulation is formed. The process can not only enhance the air flow disturbance of the combustion area and promote the full combustion of flame, but also improve the heat exchange efficiency of the flue gas and the bottom of the cooker 300. Wherein, can set up seal structure around the through-hole 143, prevent that flue gas from leaking to drive piece 22 one side from through-hole 143, influence equipment safety. The rotation speed of the fan blades 21 can be automatically adjusted according to the combustion load so as to match the airflow requirements under different working conditions and ensure the dynamic balance of the smoke backflow and the air supplementing quantity.

Further, as shown in fig. 5-6, the support 14 further has a gas inlet 144 communicated with the air inlet channel 141, where the gas inlet 144 is spaced from the through hole 143, that is, the gas inlet 144 and the through hole 143 are spatially independent from each other, so that the risk of gas being led into the area of the driving member 22 is reduced, and potential safety hazard caused by gas leaking into the area of the through hole 143 is avoided.

Further, as shown in fig. 1-2, at least a portion of the driving shaft 23 extends along the air inlet channel 141 in the air inlet channel 141, which is beneficial to fully utilizing the internal space of the burner 100 and reducing structural interference, and the driving member 22 is located outside the air inlet channel 141, i.e. the driving member 22 is further away from the combustion area, which can effectively reduce the influence of high temperature on the performance of the driving member 22, and improve the working stability and service life of the driving member 22. Meanwhile, the extension design of the driving shaft 23 enables the installation position of the fan blade 21 to be more flexible, the starting point of the air flow inlet can be accurately regulated and controlled, and the flow field distribution in the air blowing channel 11 is further optimized.

In some embodiments of the present application, as shown in fig. 2, the heat insulation layer 18 is disposed in the main body 10, so that the heat insulation performance of the main body 10 can be improved, and the heat dissipation of the main body 10 to the outside air can be reduced, so that the heat of the main body 10 can be radiated to the cooker 300 more, the heat efficiency can be further improved, and the heat of the main body 10 can be transferred to the connecting channel 16, so that the temperature in the connecting channel 16 is increased, and the secondary air entering from the air supplementing port 142 can absorb more heat, so that the heating effect is more obvious, and meanwhile, the temperature of the outer surface of the main body 10 can be reduced, and the use safety of the burner 100 is improved.

Wherein, the bottom of the main body 10 can be provided with a heat-insulating cavity, the heat-insulating layer 18 can be formed by aerogel in the heat-insulating cavity, the aerogel is a solid material with nano-porous network structure and filled with gaseous dispersion medium in the pores, the heat-insulating layer 18 formed by aerogel has the advantages of excellent heat-insulating performance and lighter weight, can play a good heat-insulating effect in the main body 10, and the whole weight of the main body 10 can not be greatly increased. Of course, in other embodiments, the heat-insulating layer 18 may be formed of other heat-insulating materials, the heat-insulating layer 18 is attached to the inner wall of the heat-insulating cavity, and no gap is formed between the heat-insulating layer 18 and the inner wall of the heat-insulating cavity, so that the heat-insulating effect of the main body 10 can be further improved.

Referring to fig. 7-8, the embodiment of the present application further provides a pot holder 40 and the burner 100 according to any one of the embodiments, wherein the pot holder 40 is disposed around the periphery of the burner 100, the pot holder 40 is an annular structure with a central through hole at a central position, the pot holder 40 may be annular, of course, the pot holder 40 may also be square annular or other shapes according to practical needs, the central through hole may also be a circular hole, a square hole or other shaped holes, and the shape of the central through hole is generally adapted to the overall shape of the burner 100.

It will be appreciated that when the stove 200 is used, the burner 100 is placed at the central through hole of the pot holder 40, the pot holder 40 is disposed around the outer circumference of the burner 100, and the pot 300 (which may be a wok, a pressure cooker, a soup pot, a pan or other types) is placed above the pot holder 40, and a combustion space is formed between the burner 100, the pot holder 40 and the pot 300.

Referring to fig. 7, in some embodiments of the present application, the cooking appliance 200 further includes a support plate 50, the burner 100 is disposed on the support plate 50, an annular step structure 51 is disposed on the support plate 50, the pot holder 40 includes an annular member 41 and a plurality of pot legs 42, the annular member 41 is disposed around the periphery of the burner 100, the annular member 41 is disposed on the step structure 51, and the plurality of pot legs 42 are spaced apart on the annular member 41.

Specifically, the burner 100 and the pot rack 40 are disposed on the support plate 50, so that a smoother support is provided for the burner 100 and the pot rack 40 by the support plate 50, the burner 100 and the pot rack 40 are not easy to shake or incline in the use process, and the overall stability and safety of the stove 200 are improved. Meanwhile, the step structure 51 plays a role in positioning and limiting the annular piece 41, so that the pot holder 40 is convenient to mount and dismount, the pot holder 40 is ensured to be stable in the use process, and the risks of uneven heating or overturning of the pot 300 caused by offset are avoided. The plurality of pot supporting legs 42 are used for supporting the bottom of the pot 300, the plurality of pot supporting legs 42 are uniform in height and the upper surfaces are provided with anti-skid lines, so that the pot 300 is effectively prevented from sliding, and the stability in the heating process is ensured. Wherein, the ring 41 and the pot support 42 can be integrally formed, which is beneficial to improving the overall structural strength and durability of the pot rack 40, reducing the assembly process and reducing the production cost.

In the description of the present application, it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not intended to indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and are not to be construed as limiting the present application, and that the specific meaning of the terms described above should be understood by those of ordinary skill in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (14)

1. A burner for a gas turbine, which burner comprises a burner body, characterized by comprising the following steps:

The main body is provided with a gas blowing channel, at least one smoke reflux channel and a plurality of fire outlets, the gas blowing channel is provided with a first inlet and a first outlet, the smoke reflux channel is provided with a smoke reflux port and a smoke outlet, the first inlet is communicated with the smoke outlet, the first outlet is communicated with at least part of the fire outlets, and the first outlet, the smoke reflux port and the fire outlets are all arranged upwards, and

The fan assembly is at least partially arranged in the main body and is used for forming air flow flowing from the first inlet to the fire outlet in the air blowing channel;

Wherein, the main part includes support and distributor, be provided with on the support with go out the air inlet channel of fire hole intercommunication, the distributor include with the interior fire lid that the support is connected, the air-blast passageway is located interior fire lid, a plurality of go out the fire hole include a plurality of interior fire holes, a plurality of interior fire hole set up in interior fire lid, and a plurality of interior fire hole is around the periphery of air-blast passageway is arranged, interior fire lid has around the first cavity that air-blast passageway week side set up, air inlet channel passes through first cavity with interior fire hole intercommunication, just first cavity with first export intercommunication.

2. The burner of claim 1 wherein the support has a receiving cavity;

At least part of the distributor is arranged in the accommodating cavity, and the flue gas outlet is communicated with the first inlet through the accommodating cavity.

3. The burner of claim 2 wherein the peripheral side wall of the distributor is spaced from the inner peripheral side wall of the support to form one of the flue gas recirculation passages.

4. The burner of claim 2, wherein the distributor further comprises:

The outer fire cover is connected with the support and is arranged around the periphery of the inner fire cover;

the fire outlet holes further comprise a plurality of outer fire holes, the outer fire holes are formed in the outer fire cover, and the outer fire holes are arranged at intervals on the outer fire cover in a circumferential mode.

5. The burner of claim 4 wherein said outer fire cover is spaced from said inner fire cover to form said flue gas recirculation passage between said outer fire cover and said inner fire cover.

6. A burner as claimed in claim 3 or 5, wherein the flue gas recirculation passage is of annular configuration surrounding the periphery of the air-blowing passage.

7. The burner of claim 2, wherein the support is provided with a gas supply port in communication with the receiving chamber, the gas supply port being in communication with the first inlet, the gas supply port being for external gas to flow into the first inlet.

8. The burner of claim 2 wherein said support further has a through hole, said fan assembly comprising:

The fan blades are arranged in the air blowing channel;

the driving piece is arranged outside the air blowing channel, and a driving shaft of the driving piece penetrates through the through hole and is in transmission connection with the fan blade so as to drive the fan blade to rotate, and air flow flowing from the first inlet to the first outlet is formed in the air blowing channel.

9. The burner of claim 8 wherein said support further has a gas inlet in communication with said inlet passage, said gas inlet being spaced from said through bore.

10. The burner of claim 8 wherein at least a portion of said drive shaft extends within and along said intake passage and said driver is located outside of said intake passage.

11. The burner of claim 2, wherein the distributor is spaced from a bottom wall surface of the receiving chamber to form a connecting channel, a baffle structure extending in a direction toward the connecting channel is disposed on the distributor, the baffle structure encloses a portion of the air-blowing channel, the first inlet is disposed in the baffle structure, and the first inlet is communicated with the flue gas outlet through the connecting channel.

12. Burner according to claim 1, wherein an insulating layer is provided in the body.

13. A stove comprising a pot rack and the burner of any one of claims 1 to 12, the pot rack being disposed around the periphery of the burner.

14. The cooktop of claim 13, further comprising a support plate on which the burner is disposed, the support plate having an annular step structure disposed thereon;

The pot rack comprises an annular piece and a plurality of pot supporting feet, the annular piece surrounds the periphery of the combustor, the annular piece is arranged on the step structure, and the pot supporting feet are arranged on the annular piece at intervals.