Burner device and burner

Abstract

The utility model belongs to the technical field of combustion, and particularly discloses a furnace end device and a combustor. The furnace end device comprises a furnace end assembly, a gas nozzle and an air supply assembly; the burner assembly is provided with a fuel gas supply channel, an air supply channel and a gas outlet, the gas outlet is used for supplying gas to a premixing cavity of the gas distribution seat, and the air outlet end of the air supply channel and the gas outlet end of the fuel gas supply channel are both communicated with the gas outlet; the gas nozzle is installed at the outlet end of the gas supply channel and at least partially located in the air supply channel, the gas inlet end of the gas nozzle communicates with the gas outlet end of the gas supply channel, and the gas spraying end of the gas nozzle directly faces the gas outlet. The air supply assembly is used for blowing air into the air inlet end of the air supplementing channel. According to the furnace end device and the combustor, the air supplementing amount can be increased, the gas nozzle can be cooled, and the combustion sufficiency and the thermal load stability in the combustion process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion, in particular to a burner head device and a burner. Background Art

[0002] Gas stoves are commonly used existing cooking appliances that achieve cooking through gas combustion. They adjust gas supply and gas flow through an internal burner. As the core component of a gas stove, the performance of the burner directly affects the performance of the gas stove.

[0003] Existing burners are generally divided into upward air inlet burners and downward air inlet burners based on the air inlet method. Among them, the ejection channel of the upward air inlet burner is integrally arranged at the bottom of the gas distribution base, and the nozzle is arranged at the top of the burner head and above the gas stove panel. When the burner burns, the primary air enters the ejection tube from above the panel under the ejection action caused by the high-speed injection of gas at the nozzle.

[0004] Due to the limited size of the burner head of the upward air inlet burner, the ejection distance is limited. Therefore, existing upward air inlet burners usually have the problem of insufficient intake of primary air caused by insufficient ejection, which further leads to too high CO production during gas combustion and difficulty in effectively providing combustion thermal efficiency. At the same time, since the nozzle is arranged on the upper side of the panel, the nozzle is easily affected by the high temperature generated during combustion during operation, causing the nozzle to be heated and resulting in large fluctuations in the thermal load of the gas stove during operation, affecting the use stability and reliability of the burner and the gas stove. Summary of the Utility Model

[0005] One of the technical problems to be solved by the utility model is to provide a burner head device that can effectively solve the problems of insufficient air ejection and thermal load fluctuations caused by nozzle heating existing in existing burners.

[0006] Another technical problem to be solved by the utility model is to provide a burner that can effectively solve the problems of high CO content and low combustion thermal efficiency caused by insufficient air ejection existing in existing burners, and solve the problem of large fluctuations in combustion thermal load caused by excessive heating of the burner head in existing burners, improving combustion stability and combustion thermal efficiency.

[0007] The above first technical problem is solved by the following technical solutions:

[0008] A burner head device, comprising:

[0009] A burner head assembly, the burner head assembly is provided with a gas supply channel, an air supplement channel, and an air outlet. The air outlet is used to supply gas to the premixing chamber of the gas distribution base. The air outlet end of the air supplement channel and the gas outlet end of the gas supply channel are both communicated with the air outlet.

[0010] A gas nozzle is installed at the outlet end of the gas supply channel and at least partially located within the air supplement channel. The inlet end of the gas nozzle is in communication with the outlet end of the gas supply channel, and the jet end of the gas nozzle faces the outlet port.

[0011] An air supply assembly for blowing air into the air inlet end of the air supplement channel.

[0012] Compared with the background art, the burner head device of the present utility model has the beneficial effects as follows: By providing an air supplement channel and an air supply assembly, air can be sent into the air supplement channel by blowing, so that the blown air enters the ejector channel facing the gas nozzle through the air supplement channel and the outlet port, increasing the amount of air entering the ejector channel, enabling the gas to be completely burned during combustion, improving the combustion sufficiency and combustion thermal efficiency, and reducing the content of CO generated by combustion; at the same time, since the gas nozzle is at least partially located downstream of the air supplement channel, when the blown air flows out of the outlet port from the air supplement channel, the cold air at least purges the jet end of the gas nozzle, so that the cold air can cool the gas nozzle, preventing the gas nozzle from overheating and affecting the combustion heat load, and improving the combustion stability and combustion reliability.

[0013] In one embodiment, the burner head assembly includes:

[0014] A burner head base having the air supplement channel and the gas supply channel;

[0015] A nozzle base is provided corresponding to the gas nozzle one by one. The nozzle base is detachably installed on the burner head base and located at the air outlet end of the air supplement channel. The nozzle base has a ventilation cavity with at least one end open. One open end of the ventilation cavity forms the outlet port. Ventilation openings are provided on the circumferential side wall of the nozzle base. The ventilation openings communicate the air supplement channel and the ventilation cavity, and the nozzle is installed on the nozzle base.

[0016] In one embodiment, a plurality of the ventilation openings are circumferentially spaced along the gas nozzle;

[0017] And / or, both ends of the ventilation cavity are open, and the outlet end of the gas supply channel is in communication with the inlet end of the gas nozzle through the other open end of the ventilation cavity.

[0018] In one embodiment, the burner head base is provided with an installation opening, the installation opening communicates with the air outlet end of the air supplement channel, the nozzle base is disassembled and assembled on the burner head base through the installation opening, and the outlet end of the nozzle base closes the installation opening.

[0019] In one embodiment, two gas nozzles are circumferentially spaced along the burner head assembly. The two gas nozzles are respectively used for supplying gas for the outer-ring flame and the central flame. The gas supply channel and the air supply complement channel are respectively arranged in one-to-one correspondence with the gas nozzles, and the air supply assembly supplies air to the two air supply complement channels.

[0020] In one embodiment, the air supply assembly includes:

[0021] An air supply pipe having an air supply channel inside, an air inlet and two air supply outlets communicated with the air supply channel. The two air supply outlets are respectively communicated with the air inlet ends of the two air supply complement channels;

[0022] An air supply fan, the air outlet of the air supply fan is communicated with the air inlet.

[0023] In one embodiment, the air supply pipe includes a connecting pipe portion and two air outlet pipe portions connected to the connecting pipe portion at an angle. The two air outlet pipe portions are spaced along the length direction of the connecting pipe portion. The end of each air outlet pipe portion forms the air supply outlet, and the air inlet is opened on the connecting pipe portion;

[0024] And / or, a positioning ring portion surrounding the air inlet is arranged on the outer side of the air supply pipe, and the positioning ring portion is inserted into the air outlet of the fan.

[0025] In one embodiment, the air inlet end of the air supply complement channel is formed by the opening of a tubular structure, and the tubular structure is coaxially arranged with the air outlet pipe portion; the air supply assembly further includes a connecting sleeve, the connecting sleeve is arranged in one-to-one correspondence with the air outlet pipe portion, the tubular structure is hermetically sleeved with the first end of the connecting sleeve, and the air outlet pipe portion is hermetically sleeved with the second end of the connecting sleeve.

[0026] In one embodiment, the air supply assembly further includes a mounting bracket, and the air supply pipe and the air supply fan are both mounted on the mounting bracket.

[0027] In one embodiment, the burner head assembly includes a burner head frame and two ventilation components circumferentially spaced along the periphery of the burner head frame. The upper end of each ventilation component extends out of the upper end surface of the burner head frame, the air outlet is located at the upper end of the ventilation component, and the gas supply channel and the air supply complement channel are opened along the extending direction of the ventilation component itself. The air supply assembly is connected to the side of the ventilation component away from the burner head frame.

[0028] The above second technical problem is solved by the following technical solutions:

[0029] A burner, comprising a gas distribution base, wherein an ejection channel is arranged at the bottom of the gas distribution base, and is characterized by comprising the above-mentioned burner head device, wherein the ejection channels are arranged in one-to-one correspondence with the gas nozzles, and the air outlet is arranged opposite to the inlet end of the ejection channel.

[0030] Compared with the background art, the burner of the present utility model has the beneficial effects that by adopting the above-mentioned burner head device, the air replenishment of the burner can be enhanced, the combustion sufficiency and combustion thermal efficiency of the burner can be improved, the gas loss can be reduced, and the content of CO generated by combustion can be reduced. At the same time, the thermal load fluctuation during combustion can be reduced, and the combustion stability can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a burner provided by an embodiment of the present utility model;

[0032] Figure 2 is a schematic exploded view of a burner provided by an embodiment of the present utility model;

[0033] Figure 3 is a partial structural cross-sectional view of a burner provided by an embodiment of the present utility model;

[0034] Figure 4 is Figure 3 a partial enlarged view of I in

[0035] Figure 5 is Figure 3 a partial enlarged view of J in

[0036] Figure 6 is a schematic structural diagram of a burner head device provided by an embodiment of the present utility model;

[0037] Figure 7 is a schematic exploded view of an air supply assembly provided by an embodiment of the present utility model;

[0038] Figure 8 is a schematic exploded view of a burner provided by another embodiment of the present utility model.

[0039] Reference numeral description:

[0040] 100, burner head device; 200, gas distribution base; 201, ejection channel; 201a, outer ring ejection channel; 201b, central ejection channel; 202, premixing chamber; 202a, outer ring premixing chamber; 202b, central premixing chamber; 203, ejection pipe; 204, convex ring part; 205, positioning groove; 300, outer ring burner cap; 301, outer ring burner holes; 400, central burner cap; 401, central burner holes; 500, electric heating component.

[0041] 1. Burner base; 11. Burner holder; 111. Support top seat; 1111. Upper support surface; 112. Support leg; 12. Ventilation component; 121. Ventilation vertical part; 122. Ventilation horizontal part; 123. Gas supply channel; 123a. Outer ring gas channel; 123b. Central gas channel; 124. Air supply channel; 1241. Longitudinal channel; 1242. Transverse channel; 125. Installation port; 126. Partition part; 13. Cover;

[0042] 2. Gas nozzle;

[0043] 3. Nozzle seat; 31. Fixing part; 32. Ventilation cylinder part; 321. Ventilation opening; 33. Limiting convex part; 34. Ventilation cavity; 341. Connecting cavity part; 342. Main cavity part;

[0044] 4. Air supply assembly; 41. Air supply pipe; 411. Connecting pipe part; 412. Air outlet pipe part; 413. Fixed ear part; 414. Positioning ring part; 42. Air supply fan; 43. Connecting sleeve; 44. End cover; 45. Mounting bracket; 5. Thermocouple; 6. Ignition pin; 7. Dry - burning prevention probe; 8. Positioning component. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with 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. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0047] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] This embodiment provides a burner, which can be applied to a gas stove to achieve cooking or other operations through gas combustion, and can improve the combustion stability and thermal efficiency of the burner, and reduce the generation amount of CO during the combustion process.

[0050] As Figures 1 to 6 shown, the burner includes a burner head device 100, a gas supply assembly, a gas distribution seat 200, and a burner cap assembly. Among them, a gas supply channel 123 and a gas nozzle 2 located at the outlet end of the gas supply channel 123 are provided inside the burner head device 100; the gas distribution seat 200 is installed at the upper end of the burner head device 100, and the bottom of the gas distribution seat 200 has an ejector channel 201. The gas nozzle 2 is disposed opposite to the inlet end of the ejector channel 201, and the gas distribution seat 200 has a premixing chamber 202 with an open upper end. The premixing chamber 202 is communicated with the outlet end of the ejector channel 201; the burner cap assembly covers the upper end of the gas distribution seat 200 and has flame holes, and the flame holes are communicated with the premixing chamber 202; the gas supply assembly is communicated with the inlet end of the gas supply channel 123 to supply gas to the gas supply channel 123.

[0051] When the burner is in use, the gas supply assembly supplies gas to the gas supply channel 123. The gas is accelerated and ejected into the ejector channel 201 when flowing through the gas nozzle 2. At the same time, the air near the inlet end of the ejector channel 201 enters the ejector channel 201 under the action of negative pressure to achieve the intake of primary air; the gas-air mixture enters the premixing chamber 202 through the ejector channel 201, is mixed evenly, and flows to the flame holes of the burner cap assembly to be ignited and burned.

[0052] In this embodiment, the burner head device 100 specifically further includes a burner head assembly and a air supply assembly 4. Among them, for the burner head assembly, a gas supply channel 123, an air supply compensation channel 124, and an air outlet are provided. The air outlet is used to supply gas to the premixing chamber 202 of the gas distribution seat 200. The air outlet end of the air supply compensation channel 124 and the gas outlet end of the gas supply channel 123 are both communicated with the air outlet; the gas nozzle 2 is installed at the outlet end of the gas supply channel 123 and at least partially located inside the air supply compensation channel 124. The inlet end of the gas nozzle 2 is communicated with the gas outlet end of the gas supply channel 123, and the jet end of the gas nozzle 2 is disposed opposite to the air outlet; the air supply assembly 4 is used to blow air into the air inlet end of the air supply compensation channel 124.

[0053] The burner head device 100 provided in this embodiment can send air into the air supplement channel 124 in a blowing manner by arranging the air supplement channel 124 and the air supply assembly 4, so that the blown air enters the ejector channel 201 opposite to the gas nozzle 2 through the air supplement channel 124 and the air outlet, increasing the air volume entering the ejector channel 201, enabling the gas to be completely burned during the combustion process, improving the combustion sufficiency and combustion thermal efficiency, and reducing the content of CO generated by combustion. At the same time, since at least a part of the gas nozzle 2 is located downstream of the air supplement channel 124, when the blown air flows out of the air outlet from the air supplement channel 124, the cold air at least purges the jet end of the gas nozzle 2, so that the cold air can cool the gas nozzle 2, preventing the gas nozzle 2 from overheating and affecting the combustion heat load, and improving the combustion stability and combustion reliability.

[0054] It should be noted that in this embodiment, the burner is an upward air inlet burner, that is, when the burner is applied to a gas stove, the gas nozzle 2 is higher than the stove top panel of the gas stove, the gas distribution seat 200 and the burner cap assembly are both located above the stove top panel, and the bottom of the burner head assembly is installed on the base of the gas stove. Specifically, the burner head assembly has an upper support surface 1111 provided, and both the air outlet and the gas nozzle 2 are higher than the upper support surface 1111.

[0055] As Figures 1 to 3 shown, in one embodiment, the burner cap assembly includes an outer ring burner cap 300 and a central burner cap 400. The outer ring burner cap 300 is sleeved outside the central burner cap 400 at intervals. The outer ring burner cap 300 is provided with outer ring burner holes 301, and the central burner cap 400 is provided with central burner holes 401. That is, the burner holes of the burner cap assembly include outer ring burner holes 301 and inner ring burner holes. The outer ring burner holes 301 and / or the inner ring burner holes can be provided with a plurality of them at intervals along the circumferential direction of the burner cap assembly, or can be in a ring slot structure extending along the circumferential direction of the burner cap assembly. The specific structures of the outer ring burner cap 300 and the inner ring burner cap can be set with reference to the prior art, and the present invention does not make any limitations or elaborations on this.

[0056] Correspondingly, two ejector tubes 203 are provided at the bottom of the gas distribution seat 200. The inner cavities of each ejector tube 203 respectively form an ejector channel 201. The two ejector channels 201 are respectively an outer ring ejector channel 201a and a central ejector channel 201b; two pre-mixing chambers 202 are correspondingly provided, which are respectively an outer ring pre-mixing chamber 202aa and a central pre-mixing chamber 202bb. The outer ring pre-mixing chamber 202a is arranged around the outside of the central pre-mixing chamber 202b. The air outlet end of the outer ring ejector channel 201a is communicated with the outer ring pre-mixing chamber 202a, and the air outlet end of the central ejector channel 201b is communicated with the central pre-mixing chamber 202b.

[0057] Correspondingly, two gas nozzles 2 are circumferentially spaced along the burner head assembly. The two gas nozzles 2 are respectively used for supplying gas for the outer ring fire and air for the central fire. Specifically, the gas jet ends of the two gas nozzles 2 are respectively opposite and spaced from the intake ends of the two ejector channels 201. The gas supply channel 123 and the air supplement channel 124 are both arranged in one-to-one correspondence with the gas nozzles 2, and the air supply assembly 4 supplies air to the two air supplement channels 124.

[0058] That is, one of the gas nozzles 2 ejects gas into the outer ring ejector channel 201a to form a gas-air mixture in the ejector channel 201. After the mixture enters the outer ring premixing chamber 202a and is mixed, it enters the outer ring fire holes 301 to participate in combustion; the other gas nozzle 2 ejects gas into the central ejector channel 201b to form a gas-air mixture in the central ejector channel 201b. After the mixture enters the central premixing chamber 202b and is mixed, it then flows to the central fire holes 401 to participate in combustion. Thus, the combustion of the outer ring fire and the central fire can be realized, improving the combustion uniformity and increasing the heating area. At the same time, the above arrangement enables the air supply assembly 4 to supply air to the combustion at the central fire holes 401 and the outer ring fire holes 301 simultaneously, ensuring the sufficiency of combustion at both the central fire holes 401 and the outer ring fire holes 301.

[0059] In another embodiment, the burner cap assembly may only include the outer ring burner cap 300, that is, only one ejector channel 201 and one gas nozzle 2 are provided. In still another embodiment, since the gas required for the outer ring fire is usually more than that required for the central fire, and the probability of insufficient combustion of the outer ring fire is greater than that of the inner ring fire, the air supplement channel 124 may also be provided only corresponding to the outer ring gas nozzle 2 to better ensure the sufficiency of combustion of the outer ring fire.

[0060] It should be noted that the structure of the air-gas base that can separately realize the gas supply to the central fire holes 401 and the outer ring fire holes 301 can be set with reference to the prior art. This is not the focus of the present utility model and will not be elaborated here.

[0061] In one embodiment, the burner head device 100 further includes a dry-burning prevention probe 7, an ignition needle 6, and a thermocouple 5. Among them, the lower end of the dry-burning prevention probe 7 is installed on the burner head assembly, and the upper end passes through the center of the gas distribution seat 200 and the burner cap assembly and extends upward out of the burner cap assembly to contact the bottom of the cooking utensil, so as to detect the temperature of the cooking utensil; the ignition needle 6 is installed on the burner head assembly and the upper end extends upward into the inner side of the outer ring burner cap 300 to realize the ignition and combustion of the gas; the thermocouple 5 is installed on the burner head base 1 and the upper end extends into the inner side of the outer ring burner cap 300 to detect the temperature generated by the combustion. The specific structures of the dry-burning prevention probe 7, the ignition needle 6, and the thermocouple 5 and their installation structures on the burner head assembly can be set with reference to the prior art. This is not the focus of the present utility model and will not be elaborated here.

[0062] As Figure 3 and Figure 4 shown, the gas distribution seat 200 is supported on the upper support surface 1111. To better realize the installation of the gas distribution seat 200 on the burner base 1, in an embodiment, one of the lower sides of the gas distribution seat 200 and the ejector pipe 203 is convexly provided with a positioning member 8, and the other is provided with a positioning groove 205. The positioning member 8 is inserted into the positioning groove 205 to realize the installation positioning of the two. Preferably, a plurality of positioning members 8 are spaced apart to improve the installation reliability of the gas distribution seat 200 on the burner assembly.

[0063] In an embodiment, a threaded hole penetrating the upper support surface 1111 is formed in the gas distribution seat 200. The positioning member 8 is a positioning screw. The positioning screw is screwed into the threaded hole from top to bottom, and the screw head of the positioning screw is higher than the upper support surface 1111. The screw head of the positioning screw is inserted into the positioning groove 205. Thus, by screwing the positioning screw, the height of the screw head of the positioning screw protruding from the upper support surface 1111 can be adjusted, which is conducive to realizing the leveling of the installation of the gas distribution seat 200 and ensuring the installation reliability and installation accuracy of the gas distribution seat 200 on the burner assembly.

[0064] To improve the convenience of setting the positioning groove 205, a convex ring portion 204 is convexly provided on the lower side surface of the ejector pipe 203. The inner cavity of the convex ring portion 204 forms the positioning groove 205, thereby avoiding the problem of weakening the local structural strength of the ejector pipe 203 caused by directly forming the positioning groove 205 on the ejector pipe 203. Preferably, at least two positioning grooves 205 are spaced apart along the length direction of each ejector pipe 203 to ensure the reliability of the installation positioning of the gas distribution seat 200.

[0065] As Figures 3 to 6 shown, to improve the convenience of setting the gas nozzle 2, the gas supply channel 123 and the air supply channel 124 on the burner base 1, the burner assembly includes a burner base 1 and a nozzle seat 3. The burner base 1 has an air supply channel 124 and a gas supply channel 123; the nozzle seats 3 are provided in one-to-one correspondence with the gas nozzles 2. The nozzle seats 3 are detachably installed on the burner base 1 and are located at the air outlet end of the air supply channel 124. The nozzle seats 3 have an air vent cavity 34 with at least one end open. One open end of the air vent cavity 34 forms an air outlet. Ventilation openings 321 are formed in the circumferential side wall of the nozzle seat 3. The ventilation openings 321 are communicated with the air supply channel 124 and the air vent cavity 34. The nozzle 2 is installed on the nozzle seat 3.

[0066] By setting the nozzle seat 3, on the basis of keeping the structural dimensions of the burner head seat 1 unchanged, through the structural setting of the nozzle seat 3, the size of the air supply chamber 34 and the size of the connection port between the air supply chamber 34 and the air replenishment passage 124 can be adjusted, so as to facilitate the installation adaptation of the nozzle seat 3 and the gas nozzle 2, and design the amount of air replenishment to improve the combustion reliability. In one embodiment, the nozzle seat 3 is made of copper or other high-temperature resistant materials.

[0067] To improve the cooling effect on the gas nozzle 2, in one embodiment, a plurality of ventilation openings 321 are arranged at intervals along the circumferential direction of the gas nozzle 2, and each ventilation opening 321 communicates with both the air supply chamber 34 and the air replenishment passage 124. By providing a plurality of ventilation openings 321 surrounding the gas nozzle 2, the contact area between the outer side surface of the gas nozzle 2 and the cold air can be increased, so that the cold air can better wrap the gas nozzle 2, enhancing the cooling effect on the gas nozzle 2 and improving the heat uniformity of the gas nozzle 2, which is further conducive to the stability of the heat load. At the same time, the arrangement of a plurality of ventilation openings 321 is conducive to reducing the size of a single ventilation opening 321 while ensuring the air replenishment amount, which is beneficial to ensuring the local structural strength and stiffness of the nozzle seat 3.

[0068] In one embodiment, the ventilation openings 321 are arranged opposite to the jet end of the gas nozzle 2, and the gas nozzle 2 is entirely located within the air supply chamber 34. In another embodiment, the jet end of the gas nozzle 2 may extend outside the air supply chamber 34.

[0069] In one embodiment, the gas nozzle 2 is completely located within the air supply chamber 34, and both ends of the air supply chamber 34 are open. The outlet end of the gas supply passage 123 communicates with the inlet end of the gas nozzle 2 through the second end of the air supply chamber 34, which is conducive to the installation of the gas nozzle 2 on the nozzle seat 3. In another embodiment, the inlet end of the gas nozzle 2 may be located outside the air flow chamber, and the inlet end of the gas nozzle 2 is directly connected to the outlet end of the gas supply passage 123.

[0070] To improve the installation convenience of the gas nozzle 2, in one embodiment, the burner head seat 1 is provided with an installation opening 125, the installation opening 125 communicates with the outlet end of the air replenishment passage 124, the nozzle seat 3 is disassembled and assembled to the burner head seat 1 through the installation opening 125, and the outlet end of the nozzle seat 3 closes the installation opening 125. This enables the nozzle seat 3 to be disassembled through the installation opening 125 while preventing the air in the air replenishment passage 124 from directly flowing out through the installation opening 125.

[0071] In one embodiment, the air supply channel 124 is located on the side of the gas supply channel 123 facing the burner head holder 11. A partition 126 is formed between the air supply channel 124 and the gas supply channel 123. Threaded mounting holes are formed in the partition 126. The second end of the nozzle seat 3 is provided with a fixing portion 31 having an external thread. The fixing portion 31 is screwed into the threaded mounting hole to realize the installation of the nozzle seat 3 on the burner head base 1. At the same time, this setting can enable the threaded fit between the fixing portion 31 and the threaded mounting hole to achieve sealing at the connection, preventing the gas in the gas supply channel 123 from entering the air supply channel 124 through the gap at the installation position of the nozzle seat 3. Furthermore, this setting makes the second end opening of the ventilation cavity 34 directly face the gas supply channel 123, which is conducive to realizing the connection between the gas supply channel 123 and the gas nozzle 2.

[0072] Further, the nozzle seat 3 further includes a ventilation cylinder portion 32 coaxially connected to the mounting portion. The ventilation ports 321 are formed on the outer peripheral wall of the ventilation cylinder portion 32. The outer diameter of the ventilation cylinder portion 32 is larger than the outer diameter of the mounting portion, which is conducive to forming the ventilation ports 321 on the nozzle seat 3. The outer peripheral wall of the ventilation cylinder portion 32 is spaced from the channel wall of the air supply channel 124 so that air can enter the ventilation ports 321 through the gap between the ventilation cylinder portion 32 and the channel wall of the air supply channel 124.

[0073] A limiting convex portion 33 is protruded radially outward at one end of the ventilation cylinder portion 32 away from the mounting portion. The limiting convex portion 33 abuts against the opening end face of the mounting opening 125. On the one hand, it limits the insertion depth of the nozzle seat 3 into the burner head base 1 to realize the installation positioning of the nozzle seat 3 on the burner head base 1. On the other hand, it realizes the blocking of the mounting opening 125.

[0074] To better realize the installation of the gas nozzle 2 in the ventilation cavity 34, the ventilation cavity 34 includes a connected connection cavity portion 341 and a main cavity portion 342. The inner diameter of the connection cavity portion 341 is smaller than the inner diameter of the main cavity portion 342. A first step surface is formed between the connection cavity portion 341 and the main cavity portion 342. Ventilation ports 321 are formed on the cavity wall of the main cavity portion 342 and one end port forms an air outlet. A second step surface is formed on the outer side surface of the gas nozzle 2. The intake end of the gas nozzle 2 is screwed into the connection cavity portion 341, and the first step surface and the second step surface abut against each other to realize the assembly position between the gas nozzle 2 and the nozzle seat 3.

[0075] The burner base 1 includes a burner frame 11. The upper end surface of the burner frame 11 forms an upper support surface 1111. An air vent component 12 is connected to the outer edge of the burner frame 11. The upper end of the air vent component 12 protrudes upward from the upper support surface 1111 and the lower end extends downward from the upper support surface 1111. An air vent cavity 34 is formed at the upper end of the air vent component 12 and penetrates through one side surface of the air vent component 12 facing the injection channel 201 to form an air outlet; an air make-up channel 124 and a gas supply channel 123 are both formed in the air vent component 12. The air vent components 12 are arranged in one-to-one correspondence with the gas nozzles 2, that is, two air vent components 12 are arranged at intervals along the circumference of the burner frame 11.

[0076] The burner frame 11 includes a support top seat 111 and support legs 112. The upper end surface of the support top seat 111 forms an upper support surface 1111. A plurality of support legs 112 are arranged at intervals along the circumference of the support top seat 111. The lower ends of the support legs 112 are used to connect with the base of the gas stove to mount the burner base 1 on the base of the gas stove. In one embodiment, one of the support legs 112 is located between two air vent components 12 to ensure the support strength of the burner frame 11 at the two air vent components 12 and ensure the structural stability of the burner base 1. A positioning component 8 is mounted on the support top seat 111.

[0077] Preferably, the lower end of the air vent component 12 is slightly higher than the lower end of the support leg 112 to facilitate the installation of the burner device 100 on the base. Specifically, when the burner base 1 is mounted on the base, the base is provided with positioning grooves corresponding to the support legs 112, and the lower ends of the support legs 112 are inserted into the positioning grooves to achieve the installation and positioning of the burner base 1 on the base. The air vent component 12 is supported on the base to avoid the problem that the connection part between the air vent component 12 and the burner frame 11 is subjected to large forces due to the air vent component 12 being suspended.

[0078] To improve the installation convenience of the air supply assembly 4 and the burner base 1, in one embodiment, the air supply assembly 4 is mounted on the side of the air vent component 12 away from the burner frame 11, so that the air supply assembly 4 is located outside the burner base 1, ensuring the installation space of the air supply assembly 4 and avoiding interference between the air supply assembly 4 and the structure of the burner base 1.

[0079] Furthermore, the air vent component 12 includes an air vent vertical part 121 and an air vent horizontal part 122 connected at an angle. The upper end of the air vent vertical part 121 extends out of the upper support surface 1111 and the lower end is connected to the first end of the air vent horizontal part 122. The second end of the air vent horizontal part 122 extends in a direction away from the burner frame 11. The air make-up channel 124 extends along the upper end of the air vent vertical part 121 to the second end of the air vent horizontal part 122. The second end of the air vent horizontal part 122 is detachably connected to the air supply assembly 4. This can increase the distance between the air supply assembly 4 and the burner frame 11 and improve the connection convenience between the air supply assembly 4 and the air vent component 12.

[0080] Specifically, the air supply channel 124 includes a transverse channel 1242 and a longitudinal channel 1241 connected at an angle. The longitudinal channel 1241 is disposed on the vertical ventilation part 121 and its upper end communicates with the ventilation cavity 34. The lower end of the longitudinal channel 1241 communicates with the first end of the transverse channel 1242. The transverse channel 1242 is disposed on the horizontal ventilation part 122 and penetrates the end face of the horizontal ventilation part 122. The gas supply channel 123 includes a main channel and an intake channel connected at an angle. The upper end of the main channel communicates with the inner cavity of the gas nozzle 2, the lower end of the main channel communicates with the intake channel, and the second end of the intake channel penetrates the side of the vertical ventilation part 121 away from the burner head frame 11, so as to facilitate the connection between the gas supply channel 123 and the gas supply component.

[0081] In one embodiment, the main channel and the longitudinal channel 1241 are parallel and spaced apart, and the intake channel and the transverse channel 1242 are parallel and spaced apart, so as to improve the structural compactness and layout rationality inside the ventilation component 12, and facilitate the opening of the gas supply channel 123 and the air supply channel 124. Further, the longitudinal channel 1241 is located on the side of the main channel facing the burner head frame 11, and the transverse channel 1242 is located below the intake channel.

[0082] In one embodiment, the longitudinal channel 1241 and the transverse channel 1242 are vertically connected, and the main channel and the intake channel are vertically connected, so as to facilitate the structural setting of the ventilation component 12 and the connection with the air supply component 4. In other embodiments, the longitudinal channel 1241 and the transverse channel 1242 may also be arranged at other angles.

[0083] In one embodiment, the longitudinal channel 1241 penetrates the lower end of the vertical ventilation part 121, and the main channel penetrates the upper end of the vertical ventilation part 121, so as to facilitate the opening of the gas supply channel 123 and the air supply channel 124, and reduce the processing difficulty of the burner head base 1. Sealing caps 13 are installed at the lower end of the longitudinal channel 1241 and the upper end of the main channel respectively, for closing the openings of the channels.

[0084] As Figure 6 and Figure 7 shown, in order to improve the air supply convenience of the air supply component 4 to the two air supply channels 124, in one embodiment, the air supply component 4 includes an air supply pipe 41 and an air supply fan 42. Among them, the air supply pipe 41 has an air supply channel inside, an air inlet and two air supply outlets both communicating with the air supply channel. The two air supply outlets are respectively communicated with the air inlet ends of the two air supply channels 124, and the fan air outlet of the air supply fan 42 is communicated with the air inlet. Thus, the air supply to the two air supply channels 124 can be realized by one air supply fan 42, reducing the cost and simplifying the structure.

[0085] In one embodiment, the air supply duct 41 includes a connecting duct portion 411 and two air outlet duct portions 412 connected to the connecting duct portion 411 at an angle. The two air outlet duct portions 412 are spaced along the length direction of the connecting duct portion 411. The end of each air outlet duct portion 412 forms an air supply outlet, and an air inlet is formed on the connecting duct portion 411. Such a structural arrangement of the air supply duct 41 is conducive to improving the connection between the air supply duct 41 and the air inlet ends of the two air supplement channels 124, and improving the connection convenience.

[0086] In other embodiments, it may also be that the air supply duct 41 includes a connecting duct portion 411, the air supply outlet is arranged on the pipe wall of the connecting duct portion 411, and the lower ends of the two ventilation components 12 are respectively inserted into the air supply outlet.

[0087] In one embodiment, both of the two air supply duct portions 41 are vertically connected to the connecting duct portion 411 to simplify the structure of the air supply duct 41 and reduce the structural difficulty of the air supply duct 41. However, it can be understood that the angle between the air supply duct portion 41 and the connecting duct portion 411 can be specifically set according to the relative positions of the two ventilation components 12.

[0088] Furthermore, the air supply channel penetrates through one end of the connecting duct portion 411 to facilitate the processing of the air supply channel. An end cover 44 is installed at the open end of the air supply channel to close the open end of the air supply channel on the connecting duct portion 411.

[0089] To further improve the assembly convenience of the air supply component 4 and the burner base 1, in one embodiment, the air inlet end of the air supplement channel 124 is formed by the opening of a tubular structure, and the tubular structure is coaxially arranged with the air outlet duct portion 412; the air supply component 4 further includes a connecting sleeve 43, and the connecting sleeve 43 is arranged corresponding to the air outlet duct portion 412 one by one. The tubular structure and the first end of the connecting sleeve 43 are hermetically sleeved, and the air outlet duct portion 412 and the second end of the connecting sleeve 43 are hermetically sleeved. By providing the connecting sleeve 43, no connecting structure needs to be provided between the two air supply duct portions 41 and the air inlet end of the air supplement channel 124, simplifying the structural arrangement of the air supply duct 41 and the burner base 1, and reducing the improvement cost of the burner base 1; at the same time, such an arrangement can also flexibly set the installation position of the air supply component 4 based on the installation space inside the gas stove, effectively avoiding interference between the air supply components and the burner base 1. Specifically, the end of the ventilation horizontal portion 122 is in a tubular structure.

[0090] In one embodiment, the connecting sleeve 43 is made of an elastic material such as rubber or silica gel to facilitate the sealed connection between the tubular structure and the air supply duct portion 41; at the same time, such an arrangement can reduce the probability that the operation vibration of the air supply fan 42 is transmitted to the burner frame 11, and improve the operation stability of the burner.

[0091] To improve the docking reliability between the air supply fan 42 and the air supply duct 41, in one embodiment, the outer side of the air supply duct 41 has a positioning ring portion 414 provided around the air inlet, and the positioning ring portion 414 is inserted into the air outlet of the fan. Thus, the assembly positioning between the air supply fan 42 and the air supply duct 41 can be realized through the insertion between the positioning ring portion 414 and the air outlet of the fan.

[0092] In one embodiment, the air supply fan 42 is installed on the side of the air supply duct 41 away from the burner head frame 11 to reduce the interference between the air supply fan 42 and the burner head base 1. In other embodiments, the air supply fan 42 can also be installed on the upper side of the air supply duct 41.

[0093] In one embodiment, fixing ears 413 are convexly provided on the outer wall of the air supply duct 41, and the fixing ears 413 are connected to the base, that is, the air supply duct 41 and the air supply fan 42 can be respectively installed on the base.

[0094] In another embodiment, as Figure 8 shown, the air supply assembly 4 further includes a mounting bracket 45, and both the air supply duct 41 and the air supply fan 42 are installed on the mounting bracket 45, thereby realizing the modular setting of the air supply assembly 4 and facilitating the overall disassembly and assembly of the air supply assembly 4.

[0095] In one embodiment, the burner head device 100 is applicable to a gas stove. In another embodiment, the burner head device 100 can be applicable to a gas-electric hybrid cooker, that is, the burner head device 100 further includes an electric heating component 500 installed on the burner head base 1. It should be noted that the setting of the electric heating component 500 on the burner head base 1 and the corresponding setting of the burner cap assembly in the gas-electric hybrid cooker can be set with reference to the prior art, which is not the focus of the present utility model and will not be elaborated herein.

[0096] In the specific content of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist in contradiction, it should be considered as the scope recorded in this specification.

[0097] The specific content of the above specific embodiments only expresses several embodiments of the present utility model, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A burner head device, characterized in that, Comprising: A burner head assembly, which is provided with a gas supply channel (123), an air supply replenishment channel (124) and an air outlet. The air outlet is used to supply gas to the premixing chamber of the gas distribution base. The air outlet end of the air supply replenishment channel (124) and the gas outlet end of the gas supply channel (123) are both communicated with the air outlet; A gas nozzle (2), which is installed at the outlet end of the gas supply channel (123) and at least partially located in the air supply replenishment channel (124). The gas inlet end of the gas nozzle (2) is communicated with the gas outlet end of the gas supply channel (123), and the gas jet end of the gas nozzle (2) faces the air outlet; A air supply component (4), which is used to blow air into the air inlet end of the air supply replenishment channel (124).

2. The burner device according to claim 1, wherein The burner head assembly includes: A burner head base (1), which has the air supply replenishment channel (124) and the gas supply channel (123); A nozzle base (3), which is provided in one-to-one correspondence with the gas nozzle (2). The nozzle base (3) is detachably installed on the burner head base (1) and is located at the air outlet end of the air supply replenishment channel (124). The nozzle base (3) has a ventilation cavity (34) with at least one open end. One open end of the ventilation cavity (34) forms the air outlet. A ventilation opening (321) is formed on the circumferential side wall of the nozzle base (3). The ventilation opening (321) communicates the air supply replenishment channel (124) and the ventilation cavity (34). The nozzle (2) is installed on the nozzle base (3).

3. The burner device according to claim 2, characterized in that, A plurality of the ventilation openings (321) are arranged at intervals along the circumference of the gas nozzle (2); And / or, both ends of the ventilation cavity (34) are open. The gas outlet end of the gas supply channel (123) is communicated with the gas inlet end of the gas nozzle (2) through the other open end of the ventilation cavity (34).

4. The burner device according to claim 2, characterized in that, The burner head base (1) is provided with an installation opening (125), and the installation opening (125) is communicated with the air outlet end of the air supply replenishment channel (124). The nozzle base (3) is disassembled and assembled on the burner head base (1) through the installation opening (125), and the air outlet end of the nozzle base (3) closes the installation opening (125).

5. The burner device according to any one of claims 1-4, characterized in that Two gas nozzles (2) are arranged at intervals along the circumference of the burner head assembly. The two gas nozzles (2) are respectively used for supplying gas for the outer ring fire and the center fire. The gas supply channel (123) and the air supply replenishment channel (124) are both arranged in one-to-one correspondence with the gas nozzle (2). The air supply component (4) supplies air to the two air supply replenishment channels (124).

6. The burner device according to claim 5, characterized in that, The air supply component (4) includes: An air supply pipe (41), which has an air supply channel inside and an air inlet and two air supply outlets that are both communicated with the air supply channel. The two air supply outlets are respectively communicated with the air inlet ends of the two air supply replenishment channels (124); An air supply fan (42), and the air outlet of the air supply fan (42) is communicated with the air inlet.

7. The burner device according to claim 6, wherein The air supply duct (41) includes a connecting duct portion (411) and two air outlet duct portions (412) connected to the connecting duct portion (411) at an angle. The two air outlet duct portions (412) are arranged at intervals along the length direction of the connecting duct portion (411). The end of each air outlet duct portion (412) forms the air supply outlet, and the air inlet is provided on the connecting duct portion (411). And / or, a positioning ring portion (414) surrounding the air inlet is provided on the outer side of the air supply duct (41), and the positioning ring portion (414) is inserted into the air outlet of the blower.

8. The burner device according to claim 7, characterized in that, The air inlet end of the air supplement channel (124) is formed by the opening of a tubular structure, and the tubular structure is coaxially arranged with the air outlet duct portion (412); the air supply assembly (4) further includes a connecting sleeve (43). The connecting sleeves (43) are arranged in one-to-one correspondence with the air outlet duct portions (412). The tubular structure is hermetically sleeved with the first end of the connecting sleeve (43), and the air outlet duct portion (412) is hermetically sleeved with the second end of the connecting sleeve (43).

9. The burner device according to claim 6, wherein, The air supply assembly (4) further includes a mounting bracket (45), and the air supply duct (41) and the air supply blower (42) are both mounted on the mounting bracket (45).

10. The burner device according to claim 5, characterized in that, The burner head assembly includes a burner head frame (11) and two air supply components (12) arranged at intervals along the circumference of the burner head frame (11) at the periphery of the burner head frame (11). The upper end of each air supply component (12) extends out of the upper end surface of the burner head frame (11). The air outlet is located at the upper end of the air supply component (12). The air supply component (12) is provided with a gas supply channel (123) and an air supplement channel (124) along its own extending direction. The air supply assembly (4) is connected to the side of the air supply component (12) away from the burner head frame (11).

11. A burner, comprising a gas distribution base (200), wherein an ejector channel (201) is arranged at the bottom of the gas distribution base (200), characterized in that, Including the burner head device according to any one of claims 1-10, the injection channel (201) is arranged in one-to-one correspondence with the gas nozzle (2), and the air outlet is arranged opposite to the air inlet end of the injection channel (201).

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