Burners and Cooktops

Abstract

The present application relates to the technical field of kitchen appliances, and discloses a burner and a stove. The burner proposed in the embodiment of the present application includes a burner body, a preheating element, and a gas pipeline. The preheating element is connected to the burner body and is provided with a preheating channel, and the preheating element is a heat-conducting element. One end of the gas pipeline is connected and communicated with the burner body, and is partially located in the preheating channel. The technical solution of the present application can improve the thermal efficiency of gas while reducing the cost of the stove.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a burner and a stove. Background Art

[0002] In order to improve the thermal efficiency of the stove, some products use the method of preheating air or preheating gas.

[0003] In the related art, the air duct or gas duct is preheated mainly by introducing an additional electric heating device, and the air duct or gas duct is often bent back and forth to increase the contact area with the electric heating device. In order to overcome the local loss and loss along the way of the fluid in the pipeline, it is also necessary to add power equipment such as a fan or a booster pump, and the overall structure of the product is complex and the cost is high. Summary of the invention

[0004] The embodiments of the present application provide a burner and a stove, which can improve the thermal efficiency of gas and reduce the cost of the stove.

[0005] In a first aspect, an embodiment of the present application provides a burner, comprising:

[0006] Burner body;

[0007] a preheating element, connected to the burner body and provided with a preheating channel, wherein the preheating element is a heat conducting element; and

[0008] A gas pipeline has one end connected to and communicated with the burner body and is partially located in the preheating channel.

[0009] In one embodiment, the preheating element is extended along the circumference of the burner body.

[0010] In one embodiment, the preheating element comprises:

[0011] A first preheating ring connected to the burner body; and

[0012] The second preheating ring is connected to the first preheating ring and is stacked with the first preheating ring along the axial direction of the burner. The preheating channel is defined between the first preheating ring and the second preheating ring.

[0013] In one embodiment, the burner body comprises:

[0014] A burner head connected to the gas pipeline; and

[0015] A fire cover, which is arranged on the burner and has a fire hole communicating with the inner space of the burner;

[0016] Wherein, the first preheating ring is connected to the outer periphery of the furnace head.

[0017] In one embodiment, at least one of the first preheating ring and the second preheating ring is an integral component with the furnace head.

[0018] In one embodiment, the burner comprises:

[0019] A burner body connected to the fire cover; and

[0020] An ejector pipe is connected to the furnace head body, one end of the ejector pipe is connected to the first preheating ring and / or the second preheating ring, and the other end of the ejector pipe is connected to and communicated with one end of the gas pipeline;

[0021] Wherein, the first preheating ring is connected to the outer periphery of the furnace head body.

[0022] In one embodiment, the ejector pipe comprises a gas ejector pipe, and the burner body comprises:

[0023] an annular flow portion, an annular channel formed therein; and

[0024] An air intake part connected to the lower part of the circulation part, and the gas ejection pipe is connected to the air intake part;

[0025] Wherein, the first preheating ring and the second preheating ring are at least connected to the air inlet portion.

[0026] In one embodiment, the preheating element is connected to the bottom of the burner body.

[0027] In one embodiment, the preheating channel is arranged to extend along the circumference of the burner body; and / or,

[0028] The outer surface of the gas pipeline contacts the inner wall of the preheating channel.

[0029] In one embodiment, along the radial direction of the burner, the preheating channel is spaced apart from the burner body.

[0030] In one embodiment, the preheating channel comprises a circular arc segment, and the length of the preheating channel occupies at least half of the circumference of the burner body; or

[0031] The preheating channel is arranged spirally around the burner body.

[0032] In one embodiment, the gas pipeline comprises:

[0033] a connecting section connected to and in communication with the burner body; and

[0034] a preheating section connected to the connecting section and located in the preheating channel;

[0035] Wherein, at least a part of the preheating section is arranged in an arc shape, and the curvature of the preheating section is greater than or equal to the curvature of the outer peripheral surface of the burner body.

[0036] In one embodiment, the connecting section comprises:

[0037] A first joint section, connected to and in communication with the burner body;

[0038] A second joint section connected to the preheating section; and

[0039] A transition section connects the first joint section and the second joint section. The transition section is arranged at an angle with at least one of the first joint section and the second joint section, and is connected to at least one of the first joint section and the second joint section in an arc transition.

[0040] In one embodiment, the gas pipeline is an air pipe and / or a gas pipe.

[0041] In one embodiment, the preheating member is an iron member or a copper member; and / or,

[0042] The gas pipeline is a copper pipe.

[0043] In a second aspect, the present application also provides a stove, including:

[0044] A stove shell having a receiving cavity; and

[0045] The burner as described in any one of the above items, at least a part of the burner is installed in the accommodating cavity.

[0046] Based on the above embodiments, the technical solution of the present application recovers the heat of the burner body itself through the preheating part, and uses the preheating part to exchange heat with the gas pipeline, and increases the initial temperature of the gas based on the heat recovery method, thereby increasing the combustion temperature of the flame and improving the energy efficiency of the burner. Compared with the related art, the implementation of the present application does not require the use of an external heating source, the structural design is simpler, the cost is lower, and there is no need to consider the energy loss of the external heating device and the electric heat conversion loss, which can effectively ensure the overall energy efficiency of the stove. In addition, since there is no need to use electric heating, the burner of the embodiment of the present application does not have the coexistence of strong electricity and gas, so there is no risk of strong electricity leakage, which improves the reliability and safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0048] Figure 1 This is a schematic structural diagram of an embodiment of a burner of the present application;

[0049] Figure 2 for Figure 1 Schematic diagram of the explosion structure of the middle burner;

[0050] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of a furnace head and a preheating element of the present application;

[0051] Figure 4 This is a schematic structural diagram of an embodiment of the first preheating ring or the second preheating ring of the present application;

[0052] Figure 5 This is a schematic diagram of the top view of the furnace head and the first preheating ring of the present application;

[0053] Figure 6 This is a schematic structural diagram of another embodiment of the furnace head and the first preheating ring of the present application.

[0054] Description of Figure Numbers:

[0055] 100, burner; 10, burner body; 11, burner head; 111, burner head body; 1111, circulation part; 1113, air inlet; 1115, gas port; 113, ejector pipe; 1131, gas ejector pipe; 1133, air ejector pipe; 13, fire cover; 15, gas distribution plate; 30, gas pipeline; 31, connecting section; 311, first joint section; 313, second joint section; 315, transition section; 33, preheating section; 50, preheating element; 51, first preheating ring; 511, first connecting ear; 53, second preheating ring; 531, second connecting ear; 55, preheating channel; 551, first preheating groove; 552, second preheating groove; 553, arc section; 555, straight line section.

[0056] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0058] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0059] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0061] One aspect of an embodiment of the present application provides a stove, which includes a stove shell and a burner. The stove shell includes a shell and a panel, the shell has a receiving cavity, at least part of the burner is installed in the receiving cavity, and the panel cover is arranged at the opening of the receiving cavity to prevent the burner from being exposed to the air, thereby protecting the burner. It can be understood that the embodiment of the present application does not limit the number of burners provided in the stove, for example, the stove may include one or two burners, and when it includes two burners, the two burners can be arranged side by side for user operation.

[0062] In order to improve the thermal efficiency of the stove, some products use the method of preheating air or preheating gas to increase the initial enthalpy of the reactants, which can effectively increase the combustion temperature and thus improve energy efficiency. In the related art, some stoves mainly preheat the air duct or gas duct by introducing an additional electric heating device. The air duct or gas duct often bends back and forth to increase the contact area with the electric heating device. However, in order to overcome the local loss of the fluid in the pipeline and the loss along the way, it is necessary to add power equipment such as fans or booster pumps. The overall structure of the product is complex and the cost is high. In addition, the above measures increase the risk of strong electricity and gas coexisting and strong electricity leakage, and the power consumption during strong electric heating should also be converted into the overall energy consumption. There will inevitably be heat dissipation losses in the process of converting electrical energy into thermal energy, so the overall energy efficiency of the stove cannot be guaranteed.

[0063] To solve the above problems, please refer to Figure 1 and Figure 2 , the embodiment of the present application also proposes a burner 100. In some embodiments, the burner 100 includes a burner body 10, a preheating element 50 and a gas pipeline 30. One end of the gas pipeline 30 is connected to the gas source, and the other end is connected and communicated with the burner body 10. The gas pipeline 30 may include a gas pipe and an air pipe, and the gas pipe and the air pipe are both connected to the burner body 10 to provide gas and air to the burner body 10 respectively. Of course, in some embodiments, the gas pipeline 30 may also only include a gas pipe, which is not limited here. The burner body 10 is provided with a fire hole, which sprays a mixture of gas and air, and burns after ignition, so as to be used for heating the cookware.

[0064] It is understandable that the combustion of the mixed gas will release a large amount of heat, part of which is used to heat the cookware, and the other part is radiated to the surrounding environment through the conduction of the burner body 10, so that the temperature near the burner body 10 is very high. In the embodiment of the present application, the preheating member 50 is connected to the burner body 10, wherein the preheating member 50 is a heat conducting member, and the heat of the burner body 10 can be conducted to the preheating member 50. A preheating channel 55 is provided in the preheating member 50, and part of the gas pipeline 30 is located in the preheating channel 55. In this way, the heat of the preheating member 50 can be conducted to the part of the gas pipeline 30 located in the preheating channel 55, and when the gas passes through the part of the gas pipeline 30 located in the preheating channel 55, it can be heated by the preheating member 50, achieving the effect of preheating the gas, increasing the initial enthalpy of the gas, and thus improving the combustion efficiency of the burner 100.

[0065] In this way, the technical solution of the present application recovers the heat of the burner body 10 itself through the preheating part 50, and uses the preheating part 50 to perform heat exchange with the gas pipeline 30, thereby increasing the initial temperature of the gas based on the heat recovery method, thereby increasing the combustion temperature of the flame and improving the energy efficiency of the burner 100. Compared with the related art, the implementation of the present application does not require the use of an external heating source, the structural design is simpler, the cost is lower, and there is no need to consider the energy loss of the external heating device and the electric heat conversion loss, which can effectively ensure the overall energy efficiency of the stove. In addition, since there is no need to use electric heating, the burner 100 of the embodiment of the present application does not have the coexistence of strong electricity and gas, so there is no risk of strong electricity leakage, which improves the reliability and safety of the product.

[0066] Please refer to Figure 2 In some embodiments, the preheating element 50 is extended along the circumference of the burner body 10 to cover more of the burner body 10, thereby increasing the contact area between the preheating element 50 and the burner body 10, thereby fully recovering the heat of the burner body 10; and the preheating element 50 extended along the circumference of the burner body 10 can provide a longer preheating channel 55, so that the gas pipeline 30 can be preheated more, further improving the combustion efficiency and the energy efficiency of the burner 100.

[0067] In one embodiment, the burner body 10 includes a burner head 11, a gas distribution plate 15 and a fire cover 13. The burner head 11 is connected to the gas pipeline 30, and an air flow channel is provided in the burner head 11, and the burner head 11 is provided with an air port 1115 connected to the air flow channel. The gas distribution plate 15 is arranged above the burner head 11 and connected to the burner head 11, and the air port 1115 is connected to the internal space of the gas distribution plate 15. The fire cover 13 is arranged above the gas distribution plate 15, and a fire hole is provided on the fire cover 13, and the fire hole is also connected to the internal space of the gas distribution plate 15, so that the air flow in the gas pipeline 30 can be ejected through the burner head 11, the gas distribution plate 15 and the fire cover 13 through the fire hole. The embodiment of the present application does not limit the number and shape of the air port 1115 and the fire hole.

[0068] It can be understood that the fire cover 13 and the gas distributor 15 are both metal parts, and the heat generated by the combustion of the airflow ejected from the fire hole is transferred to the burner head 11 through the fire cover 13 and the gas distributor 15 layer by layer, and the temperature at the burner head 11 is relatively high. In some optional embodiments, the preheating element 50 is connected to the burner head 11, and the gas pipeline 30 is also connected to the burner head 11, so that the preheating element 50 is closer to the gas pipeline 30, which is convenient for setting the gas pipeline 30 in the preheating channel 55, reducing or avoiding a large deformation of the gas pipeline 30; moreover, the structure of the burner head 11 is simpler than that of the fire cover 13 and the gas distributor 15, which is convenient for setting the preheating element 50.

[0069] Combination Figures 2 to 4In one embodiment, the preheating member 50 surrounds the outer periphery of the burner body 10. The preheating member 50 includes a first preheating ring 51 and a second preheating ring 53. The first preheating ring 51 is connected to the burner body 10, and the second preheating ring 53 is connected to at least one of the first preheating ring 51 and the burner body 10. Exemplarily, the first preheating ring 51 is located at the outer periphery of the burner head 11, and the first preheating ring 51 is connected to the burner head 11 toward the inner ring wall of the burner head 11, and the second preheating ring 53 is arranged above the first preheating ring 51, as shown in FIG. Figure 2 In the illustrated embodiment, the axial direction of the burner 100 coincides with the vertical direction, that is, the second preheating ring 53 and the first preheating ring 51 are stacked along the axial direction of the burner 100, so that a preheating channel 55 is defined between the first preheating ring 51 and the second preheating ring 53. In this example, the second preheating ring 53 is connected to the first preheating ring 51. Optionally, a first connecting ear 511 is provided on the periphery of the first preheating ring 51, and a second connecting ear 531 is provided on the periphery of the second preheating ring 53. The number of the first connecting ear 511 and the second connecting ear 531 is unlimited, and a one-to-one correspondence is maintained. The first connecting ear 511 and the second connecting ear 531 are connected. For example, the first connecting ear 511 and the second connecting ear 531 can be connected by external fasteners such as bolts. Of course, the second preheating ring 53 can also be directly connected to the burner head 11, or the second preheating ring 53 can be connected to the burner head 11 and the first preheating ring 51 at the same time to further improve the structural reliability.

[0070] In one embodiment, at least one of the first preheating ring 51 and the second preheating ring 53 is an integral component with the burner head 11. For example, the first preheating ring 51 and the burner head 11 are integrally formed. The burner head 11 can be an iron part, and accordingly, the first preheating ring 51 is also an iron part. The burner head 11 and the first preheating ring 51 can be integrally cast, which not only makes the processing and production more convenient and faster, but also improves the integrity of the first preheating ring 51 and the burner head 11, which is beneficial to the heat conduction between the burner head 11 and the first preheating ring 51, and improves the heat utilization efficiency.

[0071] Of course, in some embodiments of other aspects, the second preheating ring 53 may be integrally formed with the burner head 11. Moreover, the first preheating ring 51 and the second preheating ring 53 may also be copper parts, which further improves the heat conduction efficiency and the preheating effect, thereby improving the energy efficiency of the burner 100.

[0072] Please refer to Figure 2 and Figure 3In one embodiment, the burner head 11 includes a burner head body 111 and an ejector pipe 113. The burner head body 111 is roughly cylindrical, and the gas distribution plate 15 and the fire cover 13 are sequentially arranged above the burner head body 111. An air flow channel is formed in the burner head body 111, and a gas port 1115 is arranged on the upper surface of the burner head body 111 to facilitate communication with the internal space of the gas distribution plate 15. The ejector pipe 113 is connected to one side of the burner head body 111, and one end is connected and communicated with one end of the gas pipeline 30. A jet channel is formed in the ejector pipe 113, and the jet channel is connected to the above-mentioned air flow channel to form a jet of gas flowing out of the gas pipeline 30 and make it flow into the air flow channel.

[0073] It can be seen that the first preheating ring 51 is connected to the outer periphery of the burner body 111, the second preheating ring 53 is connected to at least one of the first preheating ring 51 and the burner body 111, and further, part of the ejector tube 113 is connected to at least one of the first preheating ring 51 and the second preheating ring 53. For example, the ejector tube 113 is embedded between the first preheating ring 51 and the second preheating ring 53. It can be understood that the heat of the preheating member 50 can also be transferred to the ejector tube 113 to heat the gas entering the ejector tube 113 again, thereby further increasing the gas temperature, improving the combustion efficiency, and improving the utilization rate of heat, thereby improving the energy efficiency of the burner 100. Of course, one end of the ejector tube 113 can also be connected only to the first preheating ring 51 or the second preheating ring 53, which is not limited here.

[0074] Combination Figure 5 and Figure 6 In one embodiment, the ejector pipe 113 includes a gas ejector pipe 1131 and an air ejector pipe 1133, which are arranged side by side on one side of the burner body 111, and the gas pipeline 30 includes a gas pipe and an air pipe. One end of the gas pipe is connected to a gas source, and the other end is connected to the gas ejector pipe 1131, so as to provide gas to the burner body 10, and one end of the air pipe is connected to an air source, and the other end is connected to the air ejector pipe 1133, so as to provide air to the burner body 10.

[0075] The burner body 111 includes a circulation part 1111 and an air inlet part 1113. An annular airflow channel and a mixing channel located in the middle are formed in the circulation part 1111. The airflow channel is connected to the mixing channel. Both the mixing channel and the airflow channel are connected to the internal space of the gas distribution plate 15 through the gas port 1115. The air inlet part 1113 is connected to the bottom of the circulation part 1111 and is specifically located below a point in the circumference of the annular channel. The gas ejector pipe 1131 is connected to the air inlet part 1113, and the air inlet part 1113 is connected to the airflow channel and is smoothly connected to facilitate the guidance of gas into the airflow channel. The air ejector pipe 1133 penetrates from the bottom of the circulation part 1111 and then penetrates from the top to connect to the internal space of the gas distribution plate 15.

[0076] In the embodiment of the present application, the preheating element 50 is at least connected to the air inlet 1113. Figure 6 In the illustrated embodiment, the first preheating ring 51 is connected to the air inlet 1113, and the second preheating ring 53 is connected to the first preheating ring 51. In this way, the preheating member 50 can maintain the heat of the air inlet 1113, thereby better heating the gas entering the burner 11 and improving the combustion efficiency.

[0077] In the embodiment of the present application, the gas pipe may be partially disposed in the preheating channel 55, or the air pipe may be partially disposed in the preheating channel 55, or both the gas pipe and the air pipe may be partially disposed in the preheating channel 55. Preheating the gas can more effectively improve the combustion efficiency, and the following explanation is made with the gas pipe partially disposed in the preheating channel 55.

[0078] Please combine Figure 3 and Figure 4 , a preheating channel 55 is defined between the first preheating ring 51 and the second preheating ring 53, a first preheating groove 551 is formed on the side of the first preheating ring 51 facing the second preheating ring 53, and a second preheating groove 552 is formed on the side of the second preheating ring 53 facing the first preheating ring 51. When the first preheating ring 51 is connected to the second preheating ring 53, the first preheating groove 551 is connected to the second preheating groove 552 to form a preheating channel 55. During assembly, the gas pipe can be placed in the first preheating groove 551 first, and then the second preheating ring 53 is connected, so that the first preheating ring 51 and the second preheating ring 53 clamp and fix the gas pipe up and down. As a result, the outer surface of the gas pipe contacts the inner wall of the preheating channel 55. On the one hand, this can make the connection between the preheating part 50 and the gas pipe tighter, achieve the fixation of the gas pipe, and improve the stability of the gas pipe. On the other hand, it can also improve the heat conduction efficiency of the gas pipe and the preheating part 50, and improve the preheating effect.

[0079] In some embodiments, the preheating channel 55 is arranged to extend along the circumference of the burner body 10. For example, the preheating member 50 is arranged roughly in an annular shape, and the preheating channel 55 is arranged roughly along the extension direction of the preheating member 50. In this way, the length of the preheating channel 55 is longer, and a longer gas pipe can be accommodated, so that the gas can be preheated more fully, further improving the combustion efficiency and the energy efficiency of the burner 100.

[0080] Combination Figures 3 to 6, exemplarily, the gas pipe includes a connecting section 31 and a preheating section 33 connected to each other, the connecting section 31 is connected and communicated with the ejector tube 113, the preheating section 33 is located in the preheating channel 55, and the end thereof away from the connecting section 31 is used to connect with an external gas source. The preheating channel 55 includes an arc section 553 and two straight sections 555, the arc section 553 is extended along the circumference of the burner head 11, and occupies just half of the circumference of the burner head 11, or the arc section 553 is semi-circular, and the two straight sections 555 respectively connect the two ends of the arc section 553 and extend along the tangent direction of the connection between the straight section 555 and the arc section 553. The preheating section 33 is similar to the extension shape of the preheating channel 55 and is arranged in the preheating channel 55. In this way, the length of the preheating channel 55 occupies half or more of the circumference of the burner body 10, and has a larger channel length, so that it can accommodate a longer preheating section 33 to fully preheat the gas in the preheating section 33. Of course, in other embodiments, the arc segment 553 of the preheating channel 55 may also be a major arc segment, thereby ensuring that the length of the preheating channel 55 occupies more than half of the circumference of the furnace head 11 .

[0081] Furthermore, the curvature of the part of the preheating section 33 located in the arc section 553 in the preheating channel 55 is greater than or equal to the curvature of the outer peripheral surface of the burner body 10. In this way, the bending transition angle of the preheating section 33 is large, the gas flows smoothly, and the situation that the pipeline turns too much and affects the gas pressure head can be avoided, the gas pressure can be guaranteed, and the effect on the entrainment and suction of the gas can be avoided. Moreover, in this embodiment, the connecting section 31 is connected to one end of the straight section 555 of the preheating section 33 located in the preheating channel 55, which can also effectively avoid the connection between the connecting section 31 and the preheating section 33 turning too much and affecting the gas pressure head.

[0082] In one embodiment, the connection section 31 includes a first joint section 311, a second joint section 313 and a transition section 315. The first joint section 311 is connected and communicated with the burner body 10, specifically connected to the gas ejection pipe 1131, the second joint section 313 is connected to the preheating section 33, and the transition section 315 is connected to the first joint section 311 and the second joint section 313. The transition section 315 is set at an angle with at least one of the first joint section 311 and the second joint section 313. Figure 5 and Figure 6As shown, the first joint section 311 and the second joint section 313 are arranged in parallel. Optionally, the extension direction of the second joint section 313 is the same as the extension direction of the straight section 555, which is convenient for connecting with the preheating section 33. The main part of the transition section 315 is arranged at right angles to the first joint section 311 and the second joint section 313, so as to avoid the angle between the transition section 315 and any one of the first joint section 311 and the second joint section 313 being too large. The transition section 315 is connected to the first joint section 311 and the second joint section 313 in an arc transition to reduce the pressure loss of the gas flowing through the connecting section 31 and ensure the gas supply. Of course, in other embodiments, the first joint section 311 and the second joint section 313 can also be arranged at an angle, and the transition section 315 is connected to one or both of the first joint section 311 and the second joint section 313 in an arc transition, which will not be described in detail here.

[0083] Optionally, the preheating section 33 and the connecting section 31 are an integrated structure, that is, the two are integrally formed to improve the integrity and sealing of the gas pipe structure and avoid connection leakage. Further, the gas pipe is a copper pipe, for example, the gas pipe is a copper pipe, which improves the heat exchange efficiency of the gas pipe, thereby improving the preheating effect, and increasing the gas temperature and combustion efficiency.

[0084] In other embodiments not shown, the preheating channel 55 can also be arranged in a spiral shape around the burner body 10. For example, the preheating member 50 includes a plurality of preheating rings, which are stacked and arranged on the outer periphery of the burner head 11, and the plurality of preheating rings are connected to form a multi-stage channel surrounding the burner head 11, and the multi-stage channels are connected to form a spiral preheating channel 55, so as to further increase the length of the preheating channel 55, so that the preheating member 50 can fully heat the gas pipe, improve the preheating effect, and further improve the combustion efficiency of the burner 100.

[0085] In the embodiment of the present application, the preheating channel 55 is spaced apart from the burner body 10 along the radial direction of the burner 100. That is, the preheating section 33 is spaced apart from the burner body 10, and the preheating section 33 is completely wrapped by the preheating element 50. In this way, the temperature around the preheating section 33 is more uniform, and the temperature of the gas is uniformly increased, so that the combustion is more uniform and the quality is better.

[0086] In some other embodiments, the preheating member 50 and the outer circumference of the burner body 10 jointly form a preheating channel 55. For example, the outer circumferences of the preheating member 50 and the burner body 10 are both provided with grooves, and when the preheating member 50 is connected to the burner body 10, the two form a preheating channel 55. In this structural form, the gas pipe is directly in contact with the burner body 10, and the heat of the burner body 10 is directly conducted into the preheating channel 55, which can more directly preheat the gas in the gas pipe, and further increase the gas temperature.

[0087] Alternatively, in one embodiment, the preheating member 50 is connected to the bottom of the burner body 10. For example, the preheating member 50 is provided in a plate shape and is attached to the bottom of the burner head 11, thereby increasing the contact area between the preheating member 50 and the burner head 11. For another example, the preheating member 50 is wrapped around the bottom of the burner body 10, and a mounting groove may be provided on the preheating member 50, and the burner body 10 is partially provided in the mounting groove, and the preheating member 50 contacts the bottom and the outer peripheral surface of the burner body 10, thereby further increasing the connection tightness and contact area between the preheating member 50 and the burner body 10, and improving the heat recovery efficiency.

[0088] The preheating channel 55 is not limited to being arranged in the circumferential direction of the burner body 10, and can also be arranged in the preheating member 50, at the bottom of the burner body 10. In addition, the preheating channel 55 can also be bent back and forth multiple times to further extend the length of the preheating channel 55, improve the preheating effect of the preheating member 50 on the gas pipe, and improve the combustion efficiency and the energy efficiency of the burner 100.

[0089] It can be understood that the above structural example can be used not only for gas pipes, but also for gas pipes replaced by air pipes to achieve preheating of the air, increase the initial temperature of the air, and improve the combustion efficiency. Furthermore, the gas pipe and the air pipe can also be arranged in the preheating channel 55 at the same time to achieve preheating of the gas and air at the same time. The gas pipe and the air pipe can be arranged in parallel in the preheating channel 55, or independently arranged in different parts of the preheating channel 55. For example, the preheating channel 55 includes multiple layers of channels, and the gas pipe and the air pipe can be arranged in different layers of channels of the preheating channel 55 respectively. The embodiment of the present application does not specifically limit this.

[0090] The above is an explanation of the optional structural form of the burner 100 of the present application. Since the stove proposed in the embodiment of the present application adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0091] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A burner, characterized in that: include: The burner body comprises a burner head and a fire cover arranged on the burner head, wherein the fire cover has a fire hole communicating with the inner space of the burner head; the burner head comprises a burner head body and an ejector pipe, wherein the burner head body is connected to the fire cover, and the ejector pipe is connected to and communicates with the burner head body; a preheating member connected to the burner head and provided with a preheating channel, wherein the preheating member is a heat-conducting member; the preheating member comprises a first preheating ring and a second preheating ring, wherein the first preheating ring is connected to the outer periphery of the burner head body, the second preheating ring is connected to the first preheating ring, and is stacked with the first preheating ring along the axial direction of the burner, and the preheating channel is defined between the first preheating ring and the second preheating ring; as well as Gas pipelines, including air pipes and gas pipes; Wherein, the ejector pipe includes an air ejector pipe and a gas ejector pipe, one end of the air ejector pipe and one end of the gas ejector pipe are both connected to the first preheating ring and / or the second preheating ring, one end of the air pipe is connected and communicated with the air ejector pipe, and one end of the gas pipe is connected and communicated with the gas ejector pipe; part of the air pipe and / or part of the gas pipe are located in the preheating channel, and the outer surface is in contact with the inner wall of the preheating channel.

2. The burner according to claim 1, characterized in that The preheating element is extended along the circumferential direction of the burner body.

3. The burner according to claim 2, characterized in that At least one of the first preheating ring and the second preheating ring is an integral component with the furnace head.

4. The burner according to claim 3, characterized in that The burner body comprises: an annular flow portion, an annular channel formed therein; and An air intake portion is connected to the lower part of the circulation portion, and the gas ejection pipe is connected to the air intake portion; Wherein, the first preheating ring and the second preheating ring are at least connected to the air inlet portion.

5. The burner according to claim 1, characterized in that The preheating element is connected to the bottom of the burner body.

6. The burner according to claim 1, characterized in that The preheating channel is extended along the circumference of the burner body.

7. The burner according to claim 6, characterized in that Along the radial direction of the burner, the preheating channel is spaced apart from the burner body.

8. The burner according to claim 6, characterized in that The preheating channel comprises a circular arc segment, and the length of the preheating channel occupies at least half of the circumference of the burner body; or The preheating channel is arranged spirally around the burner body.

9. The burner according to claim 1, characterized in that The gas pipeline comprises: A connecting section connected to and in communication with the burner body; and A preheating section, connected to the connecting section and located in the preheating channel; Wherein, at least a part of the preheating section is arranged in an arc shape, and the curvature of the preheating section is greater than or equal to the curvature of the outer peripheral surface of the burner body.

10. The burner according to claim 9, characterized in that The connecting section comprises: A first joint section, connected to and in communication with the burner body; A second joint section connected to the preheating section; and A transition section connects the first joint section and the second joint section. The transition section is arranged at an angle with at least one of the first joint section and the second joint section, and is connected to at least one of the first joint section and the second joint section in an arc transition.

11. The burner according to any one of claims 1 to 10, characterized in that The preheating part is an iron part or a copper part; and / or, The gas pipeline is a copper pipe.

12. A cooking appliance, characterized in that: include: A stove shell having a receiving cavity; and The burner according to any one of claims 1 to 11, wherein at least a portion of the burner is installed in the accommodating cavity.

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