Cooker

Abstract

The application discloses a stove and belongs to the technical field of gas stoves. The stove comprises a burner, a pot rack and a fan assembly. The burner is provided with an air channel, a flue gas backflow channel, a gas supplement opening and a plurality of fire outlets. The air channel is provided with a first inlet and a first outlet. The flue gas backflow channel is provided with a flue gas outlet and a flue gas backflow opening. The gas supplement opening, the flue gas outlet and the first inlet are in communication. The first outlet, the flue gas backflow opening and the fire outlets are all arranged upwards. The pot rack comprises a pot rack main body. The pot rack main body is arranged around the outer periphery of the burner. The pot rack main body is provided with an air flow channel in communication with the gas supplement opening. The air flow channel is used for allowing external gas to flow into the gas supplement opening. At least part of the fan assembly is arranged in the pot rack main body. The fan assembly is used for forming an air flow flowing from the first inlet to the first outlet in the air channel. The embodiment can prolong the residence time of flue gas and improve the utilization rate of heat on the pot rack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas stove, in particular to a stove. BACKGROUND

[0002] The stove is a kind of kitchen appliance commonly used in daily life, which usually includes a pot rack and a burner. The pot rack is arranged around the outer periphery of the burner to support a pot, and the burner is used to heat the pot.

[0003] However, in the related art, the high-temperature flue gas generated when the burner is working flows out rapidly from the gap between the pot rack and the pot, and the residence time of the high-temperature flue gas is short, so that the flue gas carrying a large amount of heat is directly lost to the environment, causing energy waste. SUMMARY

[0004] The stove provided by the embodiments of the present application can prolong the residence time of flue gas and improve the utilization rate of heat on the pot rack, thereby improving the thermal efficiency.

[0005] The stove provided by the embodiments of the present application comprises:

[0006] The burner has an air channel, a flue gas backflow channel, a gas supplement port, and a plurality of fire holes. The air channel has a first inlet and a first outlet. The flue gas backflow channel has a flue gas outlet and a flue gas backflow port. The gas supplement port, the flue gas outlet, and the first inlet are in communication. The first outlet, the flue gas backflow port, and the fire holes are all arranged upward.

[0007] The pot rack includes a pot rack body, which is arranged around the outer periphery of the burner. The pot rack body has an air flow channel in communication with the gas supplement port, and the air flow channel is used for flowing external gas into the gas supplement port.

[0008] The fan assembly is at least partially arranged in the pot rack body, and the fan assembly is used to form an air flow flowing from the first inlet to the first outlet in the air channel.

[0009] In some embodiments of the present application, the inner side of the pot rack body is connected with the burner, and the air flow channel extends from the outer side of the pot rack body to the inner side of the pot rack body.

[0010] In some embodiments of the present application, the air flow channel has a second inlet and a second outlet. The second inlet extends around the outer side of the pot rack body by one turn, and the second outlet extends around the inner side of the pot rack body by one turn.

[0011] The gas supplement port is provided in plurality, and the plurality of gas supplement ports are arranged in a circumferential direction of the burner.

[0012] In some embodiments of the present application, the pot rack body is integrally formed with the outer peripheral side wall of the burner.

[0013] In some embodiments of the present application, the burner comprises:

[0014] an inner fire cover, the air channel being located in the inner fire cover;

[0015] an outer fire cover, the outer fire cover being arranged around the periphery of the inner fire cover;

[0016] wherein the plurality of fire outlets comprise a plurality of inner fire outlets and a plurality of outer fire outlets, the plurality of inner fire outlets being arranged on the inner fire cover and around the periphery of the air channel, and the plurality of outer fire outlets being arranged on the outer fire cover and spaced apart and arranged in a circle on the outer fire cover.

[0017] In some embodiments of the present application, the outer fire cover is arranged spaced apart from the inner fire cover to form the flue gas return channel between the outer fire cover and the inner fire cover, the flue gas return channel surrounding the periphery of the air channel once.

[0018] In some embodiments of the present application, the burner further comprises a base, the base being located below the outer fire cover and the inner fire cover, the base being arranged spaced apart from the outer fire cover and the inner fire cover to form a connecting channel above the base;

[0019] the inner fire cover being provided with a blocking structure extending towards the connecting channel, the blocking structure enclosing part of the air channel, the first inlet being arranged on the blocking structure, and the first inlet being in communication with the flue gas outlet through the connecting channel.

[0020] In some embodiments of the present application, the base is provided with a through hole; the fan assembly comprises:

[0021] a fan blade arranged in the air channel;

[0022] a driving member arranged outside the air channel, a driving shaft of the driving member passing through the through hole and being in transmission connection with the fan blade to drive the fan blade to rotate and form an air flow in the air channel flowing from the first inlet to the first outlet.

[0023] In some embodiments of the present application, the base is provided with an air inlet channel and a gas inlet in communication with the air inlet channel, the air inlet channel being in communication with the inner fire outlets and the outer fire outlets, and the gas inlet being arranged spaced apart from the through hole.

[0024] In some embodiments of the present application, the base is provided with a heat preservation layer.

[0025] Based on the stove in the embodiments of the present application, on the one hand, the embodiments of the present application set up a flue gas circulation loop and a fan assembly in the burner, so that the high-temperature flue gas can form a circulating flow in the burner, effectively prolonging the residence time of the flue gas in the combustion zone, more fully improving the heat exchange efficiency of the flue gas and the bottom of the pot, and because the fan assembly forms an upward airflow in the air blowing channel, the airflow sprayed to the bottom of the pot will strengthen the disturbance of the flue gas at the bottom of the pot, strengthen the convective heat exchange, and further improve the thermal efficiency. On the other hand, the airflow channel in communication with the air supplementing port is set up on the pot rack main body, so that the secondary air can recover the heat of the pot rack main body and the high-temperature flue gas after entering the stove, to preheat the secondary air and improve the initial temperature of the secondary air entering the combustion zone. The high-temperature secondary air is conducive to improving the combustion rate, thereby promoting the combustion reaction to be more sufficient, thereby significantly improving the combustion efficiency and reducing pollutant emissions. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a structural schematic diagram of the stove and the pot in an embodiment of the present application;

[0028] Figure 2 It is a structural schematic diagram of the stove in an embodiment of the present application;

[0029] Figure 3 It is a first cross-sectional structural schematic diagram of the stove in an embodiment of the present application;

[0030] Figure 4 It is a structural schematic diagram of the gas flow direction in the stove in an embodiment of the present application;

[0031] Figure 5 It is a second cross-sectional structural schematic diagram of the stove in an embodiment of the present application;

[0032] Figure 6 It is a structural schematic diagram of the base in an embodiment of the present application;

[0033] Figure 7 It is a structural schematic diagram of the fan assembly in an embodiment of the present application.

[0034] REFERENCE SIGNS:

[0035] 100, stove;

[0036] 10, burner; 11, air channel; 111, first inlet; 112, first outlet; 12, flue gas return channel; 121, flue gas outlet; 122, flue gas return port; 13, air supplement port; 14, fire hole; 141, inner fire hole; 142, outer fire hole; 15, inner fire cover; 151, enclosing structure; 16, outer fire cover; 17, base; 171, connecting channel; 172, through hole; 173, gas inlet; 181, gas channel; 182, air channel; 19, heat preservation layer;

[0037] 20, pot rack; 21, pot rack body; 211, air flow channel; 2111, second inlet; 2112, second outlet; 22, pot foot;

[0038] 30, fan assembly; 31, fan blade; 32, driving member; 33, driving shaft;

[0039] 200, pot. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the technical solutions in the related art, the following will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0041] In the related art, many stoves are open combustion, and there is a certain space interval between the pot and the burner. In the actual use process, the heat generated by the operation of the burner is not only used to heat the pot, but also a considerable part of the heat is lost through high-temperature flue gas, thereby reducing the heat transfer efficiency and resulting in low thermal efficiency.

[0042] In view of the above situation, please refer to Figures 1-3 The present application proposes a stove 100, which comprises a burner 10, a pot rack 20 and a fan assembly 30.

[0043] The burner 10 has an air channel 11, a flue gas return channel 12, a supplementary air inlet 13, and a plurality of fire outlets 14. The air channel 11 has a first inlet 111 and a first outlet 112. The flue gas return channel 12 has a flue gas outlet 121 and a flue gas return port 122. The supplementary air inlet 13, the flue gas outlet 121, and the first inlet 111 are in communication. The first outlet 112, the flue gas return port 122, and the fire outlets 14 are all upwardly arranged. The first outlet 112, the flue gas return port 122, and the fire outlets 14 are all arranged at the top of the main body. Mixed gas containing fuel gas and primary air is sprayed from the fire outlets 14 and ignited by an ignition device to generate a flame. The supplementary air inlet 13 can introduce external air to provide the required secondary air for combustion and improve combustion efficiency.

[0044] It can be understood that the number of fire outlets 14 and supplementary air inlets 13 can be two, three, four, or more. The number of fire outlets 14 and supplementary air inlets 13 is not specifically limited in the present application. For example, the supplementary air inlets 13 can be provided in multiple numbers and arranged uniformly along the circumference of the support. The air inlet of the connecting channel 171 extends around the circumference of the support and communicates with each of the supplementary air inlets 13, ensuring uniform inflow of secondary air. The multiple supplementary air inlets 13 work together with the connecting channel 171 to enable efficient entry of external air under the guidance of negative pressure. The supplementary air inlets 13 can be arranged on the side wall or bottom wall of the support. Their number and position can be adjusted according to the structure of the burner 10 to ensure uniform inflow of secondary air. The cross-sectional shape of the supplementary air inlets 13 can be circular, oval, or polygonal. The position of the supplementary air inlets 13 should also consider avoiding the high-temperature concentration area to prevent deformation or carbon deposition of the supplementary air inlets 13 due to local overheating.

[0045] The pot rack 20 includes a pot rack main body 21 arranged around the outer periphery of the burner 10. The pot rack main body 21 has an air flow channel 211 in communication with the supplementary air inlets 13 for the inflow of external air into the supplementary air inlets 13. The pot rack main body 21 is an annular structure with a central through hole at the center. The pot rack main body 21 can be a circular ring, but it can also be a square ring or other shapes according to actual needs. The central through hole can be a circular hole, a square hole, or other shaped holes. The shape of the central through hole is usually adapted to the overall shape of the burner 10.

[0046] It can be understood that when the stove 100 is used, the burner 10 is placed at the center through hole of the pot rack body 21, the pot rack body 21 is arranged around the outer periphery of the burner 10, and the pot 200 (which can be a frying pan, a pressure cooker, a soup pot, a flat-bottomed pot or other types) is placed above the pot rack body 21. The air flow channel 211 on the pot rack body 21 is in communication with the air supplement port 13 of the burner 10, which ensures that the external air flows stably into the air supplement port 13 through the air flow channel 211, forms a continuous secondary air supply, and the arrangement of the air flow channel 211 can make the secondary air sufficiently absorb the heat accumulated by the pot rack body 21 when flowing through the pot rack body 21, thereby achieving the preheating effect.

[0047] At least part of the fan assembly 30 is arranged in the main body, and the fan assembly 30 is used to form an air flow in the air flow channel 11 flowing from the first inlet 111 to the first outlet 112.

[0048] Specifically, the flue gas return channel 12 is in communication with the air flow channel 11 to form a flue gas circulation loop, the flame burns at the top of the burner 10, and the high-temperature flue gas generated surrounds the top of the burner 10. Due to the fan assembly 30 forming an air flow in the air flow channel 11 flowing from bottom to top, the air flow sprayed to the bottom of the pot 200 can strengthen the disturbance of the flue gas at the bottom of the pot 200, and then the air flow is blocked by the bottom of the pot 200 and diffuses along the bottom of the pot 200 to the four directions, thereby producing a flow guiding effect on the high-temperature flue gas at the top of the burner 10, and pushing part of the high-temperature flue gas at the top of the burner 10 to enter the flue gas return channel 12 through the flue gas return port 122, then flow into the first inlet 111 through the flue gas outlet 121, and finally enter the air flow channel 11 and be sprayed upward from the first outlet 112 under the action of the fan assembly 30. In this process, part of the flue gas is repeatedly guided to the bottom of the pot 200, prolongs the contact and heat exchange time of the high-temperature flue gas with the bottom of the pot 200, more fully improves the heat exchange efficiency of the flue gas with the bottom of the pot 200, realizes the reuse of the waste heat of the flue gas, thereby reducing the heat loss of the flue gas, and improving the thermal efficiency of the burner 10.

[0049] It can be understood that during the operation of the burner 10, the temperature of the pot rack body 21 will rise due to flame radiation and high-temperature flue gas conduction. At this time, after the secondary air enters the airflow passage 211, the secondary air contacts the high-temperature pot rack body 21 and absorbs part of the heat of the pot rack body 21 to be preheated. The preheated secondary air enters the air supplementing port 13. At the same time, the high-temperature flue gas enters the flue gas reflux passage 12 through the flue gas reflux port 122. The high-temperature flue gas mixes with the preheated secondary air to further increase the temperature of the secondary air, thereby significantly increasing the initial temperature of the combustion reaction, promoting more complete combustion of the fuel, improving the combustion efficiency, and reducing the generation of incomplete combustion products. Wherein, the fan assembly 30 generates an airflow flowing from the first inlet 111 to the first outlet 112 in the air blowing passage 11, thereby generating a negative pressure at the first inlet 111, and thereby driving the preheated secondary air and the refluxing high-temperature flue gas to be sucked into the air blowing passage 11 through the first inlet 111. The negative pressure effect helps to enhance the reflux efficiency of the flue gas and helps to suck more external air from the outside of the airflow passage 211 to increase the supplement amount of the secondary air.

[0050] As shown in the example, Figures 3-4 As shown in the example, Figure 4 The direction indicated by the dashed arrow A is the direction of the airflow formed by the fan assembly 30, the direction indicated by the dashed arrow B is the direction of the flue gas, and the direction indicated by the dashed arrow C is the direction of the secondary air. The airflow formed by the fan assembly 30 is sprayed from the first outlet 112 to the bottom of the pot 200, and then the airflow is blocked by the bottom of the pot 200 and diffuses along the bottom of the pot 200 to the surrounding, thereby pushing part of the surrounding flue gas into the flue gas reflux passage 12. At the same time, the fan assembly 30 generates a negative pressure at the first inlet 111 to suck external air from the outside of the airflow passage 211, so that the secondary air enters the inside of the burner 10 through the air supplementing port 13 and mixes with the flue gas, and is sucked into the air blowing passage 11 under the action of the fan assembly 30, and finally sprayed from the first outlet 112 to form a circulating flow. Wherein, the secondary air can be preheated by recovering the heat of the pot rack body 21 and the waste heat of the high-temperature flue gas, and then enters the combustion area to participate in the combustion, and increasing the temperature of the secondary air helps to improve the combustion efficiency.

[0051] It should be noted that, on the one hand, the embodiments of the present application provide a flue gas circulating loop and a fan assembly 30 in the burner 10, so that the high-temperature flue gas can form a circulating flow in the burner 10, effectively prolonging the residence time of the flue gas in the combustion zone and more fully improving the heat exchange efficiency of the flue gas and the bottom of the pot 200. And because the fan assembly 30 forms an airflow in the air blowing passage 11 that flows from bottom to top, the airflow sprayed to the bottom of the pot 200 will intensify the disturbance of the flue gas at the bottom of the pot 200, intensify the convective heat transfer, and further improve the thermal efficiency.

[0052] On the other hand, the gas flow channel 211 is arranged on the hob main body 21 and communicates with the air supplementing port 13, so that the secondary air can recover the heat of the hob main body 21 and the high-temperature flue gas after entering the cooking appliance 100, preheat the secondary air, increase the initial temperature of the secondary air entering the combustion zone, and the high-temperature secondary air is beneficial to improve the combustion rate, thereby promoting the combustion reaction to be more sufficient, thereby significantly improving the combustion efficiency and reducing the pollutant emission.

[0053] At the same time, due to the circulating flow of part of the flue gas and the supplement of the high-temperature secondary air, the combustible components in the flue gas that are not completely combusted can participate in combustion again in the circulating process, reduce the heat loss caused by incomplete combustion, and reduce the emission of nitrogen oxides, further improve the combustion efficiency and improve the emission performance.

[0054] Please refer to Figures 2-3 In some embodiments of the present application, the inner side of the hob main body 21 is connected with the burner 10, and the gas flow channel 211 extends from the outer side of the hob main body 21 to the inner side of the hob main body 21.

[0055] It can be understood that the hob main body 21 is connected with the burner 10, that is, there is no gap between the hob main body 21 and the burner 10, and the two are in direct contact, which ensures compact structure and reduces heat loss, so that a stable and continuous heat conduction path is formed between the hob main body 21 and the burner 10, thereby effectively transferring the heat generated in the combustion process, improving the overall temperature of the hob 20, and then providing a stable heat source for preheating of the secondary air. The gas flow channel 211 penetrates the inner and outer sides of the hob main body 21, so that when the external air flows from the outside to the inside through the gas flow channel 211, it can fully absorb the heat accumulated by the hob main body 21 through heat conduction, effectively preheat the secondary air, so that it has a high temperature before entering the air supplementing port 13, thereby improving the combustion rate. This structural design not only can strengthen heat recovery and utilization, but also can improve the temperature gradient of the combustion zone by supplying high-temperature secondary air.

[0056] Further, the hob main body 21 and the outer peripheral side wall of the burner 10 are integrally formed, which ensures that there is no gap at the joint of the hob main body 21 and the burner 10, effectively avoids leakage of high-temperature flue gas and improves the sealing performance of the overall structure, which is not only beneficial to improve the heat conduction efficiency between the hob main body 21 and the burner 10, but also reduces the disorderly entry of external cold air by closely fitting between the two, ensuring that the secondary air flows into the burner 10 through the gas flow channel 211 and the air supplementing port 13 according to the preset path, further optimizing the combustion stability and heat energy utilization efficiency, thereby improving the overall thermal efficiency of the cooking appliance 100.

[0057] Further, please refer to Figures 3-5In some embodiments of the present application, the air flow channel 211 has a second inlet 2111 and a second outlet 2112. The second inlet 2111 extends around the outer side of the pot rack body 21, so that air in each direction on the outer side of the pot rack body 21 can flow into the air flow channel 211 through the second inlet 2111, which is beneficial to increase the air inlet area, improve the secondary air intake and flow uniformity, and make the preheating of the secondary air more sufficient.

[0058] The second outlet 2112 extends around the inner side of the pot rack body 21. The air supplementing port 13 is provided in multiple numbers and is arranged in a circumferential interval along the burner 10, so that the preheated secondary air can flow into the burner 10 through the multiple air supplementing ports 13 along the circumference of the burner 10. It can be understood that the opening area of the second outlet 2112 is larger than the total opening area of the multiple air supplementing ports 13, that is, the secondary air in the air flow channel 211 will experience a throttling contraction process when entering the air supplementing port 13 from the second outlet 2112, which is helpful to improve the air flow velocity of the secondary air, thereby enhancing the kinetic energy of the secondary air after entering the air supplementing port 13 and improving the mixing efficiency of the secondary air and the high-temperature flue gas.

[0059] Please refer to Figure 5 In some embodiments of the present application, the burner 10 includes an inner fire cover 15 and an outer fire cover 16. The air drum channel 11 is located in the inner fire cover 15. The outer fire cover 16 is arranged around the circumferential side of the inner fire cover 15. The multiple fire outlets 14 include multiple inner fire holes 141 and multiple outer fire holes 142. The multiple inner fire holes 141 are arranged on the inner fire cover 15 and arranged around the outer circumference of the air drum channel 11. The multiple outer fire holes 142 are arranged on the outer fire cover 16 and arranged in a circumferential interval on the outer fire cover 16.

[0060] It can be understood that the multiple inner fire holes 141 on the inner fire cover 15 and the multiple outer fire holes 142 on the outer fire cover 16 can form annular flames, and the two can cooperate to realize uniform distribution of fire power and improve combustion stability and thermal efficiency. The inner fire cover 15 and the outer fire cover 16 each have a communication cavity. The mixed gas of fuel gas and primary air is conveyed to the inner fire hole 141 and the outer fire hole 142 through the communication cavities in the inner fire cover 15 and the outer fire cover 16, respectively, to ensure uniform distribution of the mixed gas. The number of inner fire holes 141 can be two, three, four or more, and the present application does not specifically limit the number of inner fire holes 141. The number of outer fire holes 142 can be two, three, four or more, and the present application does not specifically limit the number of outer fire holes 142.

[0061] Specifically, the inner fire holes 141 and the outer fire holes 142 are arranged around the outer periphery of the air blowing channel 11, so that the high-temperature flue gas generated by the flame combustion is mainly located in the peripheral region of the air blowing channel 11. When the air blowing channel 11 blows out the gas to the bottom of the pot 200, the gas flow is blocked by the bottom of the pot 200 and diffuses along the bottom of the pot 200, thereby generating a flow guiding effect on the high-temperature flue gas in the peripheral region of the air blowing channel 11, and pushing part of the surrounding high-temperature flue gas to enter the flue gas reflux channel 12 through the flue gas reflux ports 122 on the side of the inner fire cover 15, and re-enter the air blowing channel 11 through the first inlet 111, so as to realize the directional reflux and recycling of the high-temperature flue gas, effectively improve the combustion efficiency and reduce the emission of pollutants.

[0062] Further, please refer to Figure 5 In some embodiments of the present application, the outer fire cover 16 and the inner fire cover 15 are spaced apart, and the flue gas reflux channel 12 is formed between the outer fire cover 16 and the inner fire cover 15, and the flue gas reflux channel 12 surrounds the air blowing channel 11 once.

[0063] It can be understood that the flue gas reflux channel 12 is located in the peripheral region of the inner fire cover 15, that is, the fire holes 14 on the inner fire cover 15 are all located on the inner side of the flue gas reflux channel 12, and the flue gas reflux channel 12 is arranged in a ring structure. The ring-shaped flue gas reflux channel 12 can make more high-temperature flue gas reflux, and make the high-temperature flue gas uniformly distributed in the ring-shaped channel. The flue gas reflux channel 12 is formed by the gap between the outer fire cover 16 and the inner fire cover 15, the gap extends from the top to the bottom of the outer fire cover 16 and the inner fire cover 15, and is in communication with the first inlet 111 of the air blowing channel 11, forming a continuous reflux path. In this embodiment, the outer fire cover 16 and the inner fire cover 15 are designed in a split structure, so that the outer fire cover 16 and the inner fire cover 15 are spaced apart to form the flue gas reflux channel 12, without the need to separately provide a flue gas reflux structure, thereby simplifying the overall assembly process and improving the utilization rate of the internal space of the burner 10.

[0064] Further, please refer to Figures 3-5 In some embodiments of the present application, the burner 10 further comprises a base 17, which is located below the outer fire cover 16 and the inner fire cover 15. The base 17 is spaced apart from the outer fire cover 16 and the inner fire cover 15 to form a connecting channel 171 above the base 17. The inner fire cover 15 is provided with a surrounding structure 151 extending towards the connecting channel 171. The surrounding structure 151 forms part of the air blowing channel 11, and the first inlet 111 is arranged on the surrounding structure 151 and is in communication with the flue gas outlet 121 through the connecting channel 171.

[0065] Specifically, the base 17 leaves a gap with the outer fire cover 16 and the inner fire cover 15, which forms a connecting passage 171, and the smoke outlet 121 of the smoke backflow passage 12 is located above the connecting passage 171. After the smoke is discharged through the smoke outlet 121, it enters the connecting passage 171 formed by the gap, and then flows into the air channel 11 through the first inlet 111 on the enclosing structure 151, realizing the secondary circulation of the smoke. The enclosing structure 151 can reduce the area of the first inlet 111 of the air channel 11, so that the air inlet path of the air channel 11 is more concentrated, which is beneficial to enhance the flow rate when the smoke flows into the air channel 11.

[0066] In some embodiments, the connecting passage 171 has a plurality of communication openings in communication with the smoke outlet 121, and the plurality of communication openings are arranged along the circumferential side of the air channel 11. The smoke outlet 121 surrounds the circumferential side of the air channel 11, and therefore the total opening area of the plurality of communication openings is smaller than the opening area of the smoke outlet 121, so that the smoke forms a local pressure increase when it enters the connecting passage 171 from the smoke outlet 121, thereby improving the flow rate and kinetic energy of the smoke flowing into the connecting passage 171, and effectively enhancing the circulation power of the smoke.

[0067] Further, in some embodiments of the present application, as shown in Figures 5-7 The base 17 is provided with a through hole 172; the fan assembly 30 includes a fan blade 31 and a driving member 32, and the fan blade 31 is arranged in the air channel 11; the driving member 32 is arranged outside the air channel 11, and the driving shaft 33 of the driving member 32 penetrates through the through hole 172 and is in transmission connection with the fan blade 31 to drive the fan blade 31 to rotate and form an airflow flowing from the first inlet 111 to the first outlet 112 in the air channel 11.

[0068] Specifically, the driving member 32 drives the fan blade 31 to rotate in the air channel 11 through the driving shaft 33, thereby generating an airflow flowing from the first inlet 111 to the first outlet 112, which drives the mixed gas (smoke and secondary air) in the air channel 11 to be ejected at high speed toward the first outlet 112, forming a stable airflow circulation. This process not only enhances the airflow disturbance in the combustion area and promotes the full combustion of the flame, but also improves the heat exchange efficiency between the smoke and the bottom of the pot 200. The periphery of the through hole 172 can be provided with a sealing structure to prevent the smoke from leaking from the through hole 172 to the side of the driving member 32, affecting the safety of the equipment. The rotating speed of the fan blade 31 can be automatically adjusted according to the combustion load to match the airflow demand under different working conditions, ensuring the dynamic balance of the smoke backflow and air supplement.

[0069] Further, as shown in Figure 6As shown, the base 17 is provided with an air inlet channel (not shown in the figure) and a gas inlet 173 in communication with the air inlet channel, the air inlet channel is in communication with the inner fire hole 141 and the outer fire hole 142, the gas inlet 173 is spaced apart from the through hole 172, that is, the gas inlet 173 and the through hole 172 are independent of each other in space, which reduces the risk of gas entering the area of the driving member 32, and avoids the risk of gas leakage to the area of the through hole 172.

[0070] In some embodiments, as shown in Figures 1-2 As shown, the burner 10 further comprises a gas channel 181 and an air channel 182, both of which are in communication with a mixing chamber, the gas channel 181 is used to introduce gas into the mixing chamber, and the air channel 182 is used to introduce primary air into the mixing chamber, the mixing chamber is in communication with the air inlet channel, and the mixed gas is formed after the gas and the primary air are mixed in the mixing chamber, and then the mixed gas is sprayed out of the fire hole 14 through the air inlet channel.

[0071] In some embodiments of the present application, as shown in Figure 5 As shown, the bottom of the burner 10 is provided with a heat preservation layer 19, which can improve the heat insulation performance of the burner 10, thereby reducing the heat dissipation of the burner 10 to the outside air, and further enabling the heat of the burner 10 to be more radiated to the pot 200, which can further improve the thermal efficiency, and the heat of the burner 10 can also be transmitted to the connecting channel 171, so that the secondary air entering from the air supplementing port 13 can absorb more heat, and the warming effect is more obvious; at the same time, the temperature of the outer surface of the burner 10 can also be reduced, and the use safety of the burner 10 can be improved.

[0072] Among them, the bottom of the burner 10 can be provided with a heat preservation cavity, and the heat preservation layer 19 can be formed by aerogel in the heat preservation cavity, which is a solid material with a network structure of nanometer pores and filled with gaseous dispersion medium in the pores, and has excellent heat insulation performance and light weight. The heat preservation layer 19 formed by aerogel can have good heat insulation effect in the burner 10, and will not greatly increase the overall weight of the burner 10. Of course, in other embodiments, the heat preservation layer 19 can also be formed by other heat insulation materials, and the heat preservation layer 19 is attached to the inner wall of the heat preservation cavity, and there is no gap between the heat preservation layer 19 and the inner wall of the heat preservation cavity, which can further improve the heat insulation effect of the burner 10.

[0073] In some embodiments, as shown in Figure 5As shown, the pot rack 20 further comprises pot legs 22 arranged on the pot rack body 21, the top of the pot legs 22 protrudes from the upper surface of the pot rack body 21 for carrying the pot 200, the bottom of the pot legs 22 protrudes from the lower surface of the pot rack body 21, when the stove 100 is in use, the pot 200 is placed on the top of the pot legs 22, the pot 200 can be separated from the pot rack body 21, the bottom of the pot legs 22 is in contact with the placement plane such as a table top, the pot rack body 21 can be separated from the placement plane, thereby reducing the heat transfer from the pot rack body 21 to the placement plane, and improving the safety in use.

[0074] Wherein, the pot legs 22 can be connected with the pot rack body 21 by welding or one-piece forming and the like non-detachable manner, the pot legs 22 can also be connected with the pot rack body 21 by clamping or threaded connection and the like detachable manner, the number of the pot legs 22 can be two, three, four or more, and the top surface of the pot legs 22 can be parallel to the horizontal plane, the top surface of the pot legs 22 can also be curved or wavy and the like shape.

[0075] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0076] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stove, characterized in that, include: The burner has a blower channel, a flue gas recirculation channel, a gas supply port, and multiple flame outlets. The blower channel has a first inlet and a first outlet. The flue gas recirculation channel has a flue gas outlet and a flue gas recirculation port. The gas supply port, the flue gas outlet, and the first inlet are all connected. The first outlet, the flue gas recirculation port, and the flame outlets are all upward-facing. The flue gas recirculation channel is connected to the blower channel to form a flue gas circulation loop. The flame outlets are used to inject a mixture of fuel gas and primary air. A boiler frame includes a boiler frame body, which is arranged around the outer periphery of the burner. The boiler frame body has an airflow channel communicating with the gas injection port, and the airflow channel is used to allow external gas to flow into the gas injection port. as well as, A fan assembly, at least a portion of which is disposed within the boiler frame body, the fan assembly being used to form an airflow flowing from the first inlet to the first outlet within the air blowing channel; The inner side of the pot frame body is connected to the burner, and the airflow channel extends from the outer side of the pot frame body to the inner side of the pot frame body.

2. The stove according to claim 1, characterized in that, The airflow channel has a second inlet and a second outlet. The second inlet extends around the outer side of the pot frame body, and the second outlet extends around the inner side of the pot frame body. The gas supply ports are provided in multiple ways, and the multiple gas supply ports are arranged at intervals along the circumference of the burner.

3. The stove according to claim 1, characterized in that, The main body of the pot frame is integrally formed with the outer peripheral sidewall of the burner.

4. The stove according to claim 1, characterized in that, The burner includes: Inner burner cap, the air passage is located in the inner burner cap; An outer flame cap is provided around the periphery of the inner flame cap; The plurality of flame outlets include a plurality of inner flame outlets and a plurality of outer flame outlets. The plurality of inner flame outlets are disposed on the inner flame cover and are arranged around the outer periphery of the air blowing channel. The plurality of outer flame outlets are disposed on the outer flame cover and are spaced apart and arranged in a circular pattern on the outer flame cover.

5. The stove according to claim 4, characterized in that, The outer flame cap and the inner flame cap are spaced apart to form the flue gas return channel between the outer flame cap and the inner flame cap, and the flue gas return channel surrounds the outer circumference of the gas blowing channel.

6. The stove according to claim 4, characterized in that, The burner also includes a base located below the outer flame cap and the inner flame cap, with the base spaced apart from the outer flame cap and the inner flame cap to form a connecting channel above the base; The inner flame cover is provided with a baffle structure extending toward the connecting channel. The baffle structure encloses and forms part of the gas blowing channel. The first inlet is provided in the baffle structure and is connected to the flue gas outlet through the connecting channel.

7. The stove according to claim 6, characterized in that, The base is provided with a through hole; the fan assembly includes: Fan blades are disposed within the air blowing channel; A drive unit is disposed outside the air blowing channel. The drive shaft of the drive unit passes through the through hole and is connected to the fan blade to drive the fan blade to rotate and form an airflow from the first inlet to the first outlet in the air blowing channel.

8. The stove according to claim 7, characterized in that, The base is provided with an air intake channel and a gas inlet connected to the air intake channel. The air intake channel is connected to both the inner flame hole and the outer flame hole. The gas inlet is spaced apart from the through hole.

9. The stove according to claim 1, characterized in that, The bottom of the burner is provided with an insulation layer.

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