Safe air inlet burner

Abstract

The utility model discloses a safe air inlet burner which comprises an injection base, a cavity and an injection pipe are arranged in the injection base, the top end of the injection base is a first end, the bottom end of the injection base is a second end, the second end is provided with an air opening, and the air opening is communicated with the cavity. The injection pipe is arranged at the first end; the air inlet end of the injection pipe extends into the cavity; an injection nozzle is arranged in the cavity, corresponds to the air inlet end of the injection pipe and is communicated with the air inlet end of the injection pipe; the fire cover assembly comprises a fire cover seat and a fire cover ring, the fire cover seat covers the first end in a sealing mode, an air inlet cavity is formed in the fire cover seat, and the air inlet cavity is used for being communicated with the air outlet end of the injection pipe after the fire cover seat covers the first end in a sealing mode; and the fire cover ring covers the fire cover seat and is communicated with the air inlet cavity. According to the safe air inlet burner, the injection nozzle is arranged in the cavity in the injection seat, and the air inlet end of the injection pipe extends into the wall body and corresponds to the injection nozzle, so that the injection process is enclosed in the cavity, and residual air overflow is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stove burners, in particular to a safe air inlet burner. Background Art

[0002] In existing burners, generally, gas is sprayed through a nozzle into an ejector pipe on an ejector seat, and then mixed with air in a gas distribution seat for combustion. However, the existing nozzle is hidden in the bottom shell of the stove, and the residual gas generated during the gas spraying process will remain in the bottom shell of the stove, and the accumulation of residual gas poses a risk of deflagration in the enclosed air.

[0003] In addition, the air mixed with the gas during the combustion process is mainly introduced through the air channels above or on the side of the burner, and insufficient air intake will lead to insufficient combustion mixing. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a safe air inlet burner, in which the ejector nozzle is arranged in the cavity of the ejector seat, and the air inlet end of the ejector pipe extends into the wall body corresponding to the ejector nozzle, so that the ejection process is enclosed inside the cavity, reducing the overflow of residual gas.

[0005] The technical solution adopted by the utility model to solve its problems is as follows:

[0006] A safe air inlet burner, comprising,

[0007] An ejector seat, in which a cavity and an ejector pipe are arranged. The top end of the ejector seat is the first end, and the bottom end of the ejector seat is the second end. An air inlet is arranged at the second end, and the air inlet is communicated with the cavity; the ejector pipe is arranged at the first end; the air inlet end of the ejector pipe extends into the cavity; an ejector nozzle is arranged in the cavity, and the ejector nozzle corresponds to and penetrates the air inlet end of the ejector pipe;

[0008] A burner cap assembly, comprising a burner cap seat and a burner cap ring. The burner cap seat covers the first end, and an air inlet cavity is arranged in the burner cap seat for communicating with the air outlet end of the ejector pipe after the burner cap seat covers the first end; the burner cap ring covers the burner cap seat and is communicated with the air inlet cavity.

[0009] Further, an adjusting plate is arranged at the second end, and the adjusting plate is movably installed at the second end for adjusting the size of the air inlet during the movement process.

[0010] Further, an adjustment opening and a covering section are provided on the adjustment plate. The adjustment plate is rotatably mounted on the second end. The adjustment plate is configured to drive the covering section to gradually cover or stagger the air outlet during rotation, and the adjustment opening is configured to correspond to the air outlet when the covering section is staggered from the air outlet.

[0011] Further, a first locking portion is provided on the adjustment plate, and a plurality of second locking portions are provided at the second end. The plurality of second locking portions are spaced apart in the rotation direction of the adjustment plate, and the first locking portion is configured to lock with one of the second locking portions.

[0012] Further, the first locking portion is a spring pin, and the second locking portion is a positioning hole. The spring pin is configured to be locked and cooperate with the positioning hole.

[0013] Further, a gas passage is provided in the cavity. A gas connector is provided outside the injection seat, and the gas connector is in communication with the gas passage; the injection nozzle is provided on the gas passage and is in communication with the gas passage.

[0014] Further, the injection seat includes a bottom shell and an injection tube seat. The cavity is disposed in the bottom shell; the injection tube seat covers the top end of the bottom shell; an air outlet is provided at the bottom end of the bottom shell; the injection tube is disposed on the injection tube seat; the burner cap seat covers the injection tube seat.

[0015] Further, a water retaining edge extending outward is provided along the outer periphery of the injection tube seat; the water retaining edge extends beyond the outer peripheral edge of the top end of the bottom shell and the outer peripheral edge of the burner cap seat; the water retaining edge gradually slopes downward from inside to outside.

[0016] Further, a water receiving tray is provided along the outer peripheral edge of the top end of the bottom shell. The water receiving tray extends beyond the water retaining edge and gradually slopes downward from inside to outside.

[0017] Further, an air supplement passage is provided along the outer peripheral edge of the burner cap seat; the air supplement passage penetrates through to the middle of the burner cap seat.

[0018] In summary, the present utility model has the following technical effects:

[0019] 1. Since an air outlet is provided at the second end of the injection seat, the air outlet can introduce combustion-supporting air into the cavity. When the injection nozzle injects gas, the air in the cavity is directly mixed and then introduced into the intake cavity through the injection tube for combustion. The combusted and mixed air is directly introduced through the air outlet at the bottom end of the burner. Since the air enters the cavity from the bottom, under the influence of the injection effect and the combustion thermal field, an air circulation channel with an upward lifting force is formed, which takes away the heat of the burner structure, can reduce the surface temperature of the entire burner, and thus reduce the temperature inside the cooking appliance.

[0020] 2. The combustion-supporting air is introduced from the bottom air outlet of the ejector seat and flows directly upward. Compared with being introduced from the side, it has a more direct flow path. Therefore, the amount of combustion-supporting air introduced is larger, the gas and air are mixed more evenly, the gas utilization rate is improved, and the firepower is further enhanced.

[0021] 3. Therefore, the entire gas ejection process is enclosed in the cavity of the burner, and the entire gas emission area is separately isolated, without the risk of accumulation inside the bottom shell. Even if there is a small amount of unburned gas, it can be diluted to the cabinet space through the air outlet from the bottom of the burner and dissipated into the kitchen air, reducing the risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the burner of the present utility model;

[0023] Figure 2 It is another cross-sectional view of the burner of the present utility model;

[0024] Figure 3 It is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 4 It is a schematic diagram of the overall structure of the present utility model from another perspective;

[0026] Figure 5 It is a schematic diagram of the disassembled structure of the present utility model;

[0027] Figure 6 It is a schematic diagram of the structure of the bottom shell of the present utility model;

[0028] Figure 7 It is a schematic diagram of the structure of the cover plate of the present utility model.

[0029] Among them, the meanings of the reference numerals are as follows: 10, bottom shell; 11, cavity; 12, ejector nozzle; 13, gas connector; 14, gas passage; 15, water receiving tray; 16, adjusting plate; 161, adjusting opening; 162, spring pin; 17, spring; 18, gasket; 19, cover plate; 191, air outlet; 192, positioning hole; 20, ejector pipe seat; 30, ejector pipe; 40, burner base; 41, intake cavity; 42, air supplement passage; 50, burner ring. SPECIFIC EMBODIMENTS

[0030] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0033] Refer to Figures 1 - 7 , the present utility model discloses a safe air inlet burner, which includes an ejector seat and a burner cap assembly. A cavity 11 and an ejector tube 30 are provided in the ejector seat. The top end of the ejector seat is the first end, and the bottom end of the ejector seat is the second end. Specifically, an air inlet 191 is provided at the second end, and the ejector tube 30 is provided at the first end, and the intake end of the ejector tube 30 extends into the cavity 11. An ejector nozzle 12 is provided in the cavity 11, and the ejector nozzle 12 corresponds to and communicates with the intake end of the ejector tube 30.

[0034] The burner cap assembly includes a burner cap seat 40 and a burner cap ring 50. The burner cap seat 40 is sealed on the first end. An intake cavity 41 is provided in the burner cap seat 40. After the burner cap seat 40 is sealed on the first end of the ejector seat, the intake cavity 41 of the burner cap seat 40 communicates with the outlet end of the ejector tube, and the burner cap ring 50 is sealed on the burner cap seat 40 and communicates with the intake cavity 41.

[0035] Based on the above structure, when using the safe air inlet burner of the present utility model, the ejector seat of the burner is installed on the cooker, and the ejector nozzle 12 in the ejector seat is communicated with the gas pipe. The first end of the ejector seat extends out from the end face of the cooker, and the second end of the ejector seat located inside the cooker has a cavity 11, and the ejector nozzle 12 for ejecting gas is also enclosed in the cavity 11.

[0036] During combustion, the ignition needle ignites, and the ejector nozzle 12 can directly eject gas into the corresponding ejector tube 30, and then be guided by the ejector tube 30 to the intake cavity 41 for combustion, and the combustion flame can be guided by the burner cap ring 50 to be evenly distributed.

[0037] Since the second end of the ejector seat is provided with an air inlet 191, the air inlet 191 can introduce combustion-supporting air into the cavity 11. When the ejector nozzle 12 ejects gas, the air in the cavity 11 is directly mixed and then introduced into the intake cavity 41 through the ejector pipe 30 for combustion. The combusted and mixed air is directly introduced through the air inlet 191 at the bottom end of the burner. Since the air enters the cavity 11 from the bottom, under the influence of the ejector action and the combustion thermal field, an air circulation channel with an upward lifting force is formed, which takes away the heat of the burner structure, can reduce the surface temperature of the entire burner, and thus reduce the internal temperature of the cooker.

[0038] It should also be noted that in the prior art, if the combustion-supporting air is introduced from the side, the flow path of the combustion-supporting air is to flow horizontally first and then upward. In this embodiment, the combustion-supporting air is introduced from the bottom air inlet 191 of the ejector seat and flows directly upward, which has a more direct flow path compared to being introduced from the side. Therefore, the amount of introduced combustion-supporting air is larger, the gas and air are mixed more evenly, the gas utilization rate is improved, and the firepower is further enhanced. That is, at the same diameter, the combustion-supporting air introduced from the bottom air inlet 191 has a larger amount and a faster speed compared to the combustion-supporting air introduced from the side air inlet 191, and the combustion is more complete after mixing, so the combustion temperature is higher.

[0039] In addition, the ejector nozzle 12 is placed in the cavity 11 of the ejector seat, and the ejector pipe 30 also extends into the cavity 11 and corresponds to the ejector nozzle 12. Therefore, the entire gas ejection process is enclosed in the cavity 11 of the burner, and the entire gas emission area is separately isolated, without the risk of accumulation inside the bottom shell 10. Even if there is a small amount of unburned gas, it can be diluted to the cabinet space through the air inlet 191 at the bottom end of the burner and dissipated into the kitchen air to reduce the risk.

[0040] Furthermore, an adjusting plate 16 can be provided at the second end, and the adjusting plate 16 is movably installed at the second end. The adjusting plate 16 can adjust the size of the air inlet 191 during the movement process. In this way, during the movement of the adjusting plate 16, it can move closer to or away from the air inlet 191. When the adjusting plate 16 moves closer to the air inlet 191, the adjusting plate 16 can gradually close the air inlet 191, making the air inlet 191 gradually smaller. When the adjusting plate 16 moves away from the air inlet 191, the adjusting plate 16 can gradually open the air inlet 191, making the air inlet 191 gradually larger. In this way, the amount of introduced combustion-supporting air can be adjusted according to actual needs.

[0041] Since in different usage situations, the amount of combustion-supporting air required to be mixed with the same amount of gas during the combustion process is different, the size of the air inlet 191 can be adjusted through the movement of the above-mentioned adjusting plate 16.

[0042] Further, in this embodiment, an adjustment opening 161 and a covering section are provided on the adjustment plate 16. The adjustment plate 16 is rotatably mounted at the second end. During the rotation of the adjustment plate 16, the covering section is driven to gradually cover or stagger the air outlet 191, and the adjustment opening 161 is used to correspond to the air outlet 191 when the covering section is staggered from the air outlet 191.

[0043] That is to say, during the process of adjusting the air outlet 191, by rotating the adjustment plate 16, during the process of rotating the adjustment plate 16 in one direction, the covering section of the adjustment plate 16 can gradually cover the air outlet 191, while the adjustment opening 161 of the adjustment plate 16 can gradually stagger from the air outlet 191 during the rotation of the adjustment plate 16, so that the air outlet 191 gradually decreases, and the amount of combustion-supporting air introduced through the air outlet 191 can be reduced. On the contrary, when rotating the adjustment plate 16 in the other direction, the covering section of the adjustment plate 16 can open the air outlet 191, while the adjustment opening 161 of the adjustment plate 16 can gradually correspond to the air outlet 191 during the rotation of the adjustment plate 16, so that the air outlet 191 gradually increases, and the amount of combustion-supporting air introduced through the air outlet 191 can be increased, thereby realizing an increase in the introduced amount of combustion-supporting air.

[0044] Of course, it is also possible to directly slide the adjustment plate 16 and assemble it at the second end of the injection seat, so that by pushing and pulling the adjustment plate 16, the adjustment plate 16 can gradually approach or move away from the air outlet 191, and the size adjustment of the air outlet 191 can also be realized.

[0045] Further, in order to keep the size of the air outlet 191 unchanged after the adjustment of the adjustment plate 16 in place, a first locking portion is provided on the adjustment plate 16, and a plurality of second locking portions are correspondingly provided at the second end. The plurality of second locking portions are spaced apart in the rotation direction of the adjustment plate 16. The first locking portion is used to lock with one of the second locking portions. In this way, when the first locking portion rotates to different positions on the adjustment plate 16, the first locking portion can lock with the second locking portion corresponding to this position, so that the size of the air outlet 191 of the adjustment plate 16 is kept in a stable state through the locking of the first locking portion and the second locking portion.

[0046] More specifically, the first locking portion in this embodiment is a spring pin 162, and the corresponding second locking portion is a positioning hole 192. The spring pin 162 can be locked and matched with the positioning hole 192. In this way, when rotating the adjustment plate 16, the spring pin 162 can be driven by the rotational force of the adjustment plate 16 to withdraw from the positioning hole 192, and when the spring pin 162 of the adjustment plate 16 rotates to a position corresponding to the positioning hole 192, the spring pin 162 pops out and is stuck in the positioning hole 192.

[0047] Of course, the above first locking portion and second locking portion can also be selected as the corresponding snap-fit of the snap and the snap in the prior art, or the snap-fit of the hook and the slot, or the cooperation of the screw and the threaded hole to achieve.

[0048] Further, a gas passage 14 may be provided in the cavity 11, and a gas connector 13 is provided outside the ejector seat correspondingly. The gas connector 13 is communicated with the gas passage 14, and an ejector nozzle is arranged on the gas passage 14 and is communicated with the gas passage 14. In this way, when connecting a gas pipe, the gas pipe can be threadedly connected with the gas connector 13 through a pipe joint or inserted and connected through an insertion joint. After assembly, the connection position between the gas pipe and the gas connector 13 is sealed. The gas introduced by the gas pipe is introduced into the gas passage 14 through the gas connector 13 and then exported through the ejector nozzle 12.

[0049] Further, the ejector seat in this embodiment includes a bottom shell 10 and an ejector pipe seat 20. The above-mentioned cavity 11 is arranged in the bottom shell 10; the ejector pipe seat 20 covers the top end of the bottom shell 10. An air inlet 191 is provided at the bottom end of the bottom shell 10, and an ejector pipe 30 is arranged on the ejector pipe seat 20, and a burner cap seat 40 covers the ejector pipe seat 20.

[0050] Based on this structure, during assembly, the bottom shell 10 and the ejector pipe seat 20 can be assembled separately. After assembling the ejector nozzle 12 in the cavity 11 of the bottom shell 10, the bottom shell 10 is assembled into the cooker, and the top end of the bottom shell 10 is connected to the cooker panel. At the same time, after assembling the ejector pipe 30 into the ejector pipe seat 20, then, the ejector pipe seat 20 is connected to the top end of the bottom shell 10. Separated assembly is convenient for later maintenance. It should be noted that after the burner cap seat 40 covers the ejector pipe seat 20, they can be connected into one body by screws, so that it is convenient to take and place during use, beneficial to cleaning, and also convenient for subsequent maintenance.

[0051] Of course, the above-mentioned ejector pipe 30 can be an integral structure with the ejector pipe seat 20, or can be connected to the ejector pipe seat 20 by means of threads, etc. In this way, the length of the ejector pipe 30 can be adjusted by adjusting the thread form, so as to adjust the ejecting ability of the combustion air.

[0052] Specifically, three ejector pipes 30 distributed in a circumferential manner on the periphery and a central ejector pipe 30 can be arranged on the ejector pipe seat 20. Correspondingly, the above-mentioned burner cap seat 40 has a central air inlet cavity 41 and a peripheral air inlet cavity 41. The central air inlet cavity 41 covers the central burner cap ring 50, and the peripheral air inlet cavity 41 covers the outer ring burner cap ring 50. Based on this structure, an intermediate ejector nozzle 12 corresponding to the central ejector pipe 30 is provided on the gas passage 14 of the bottom shell 10, and peripheral ejector nozzles 12 corresponding to the peripheral ejector pipes 30 are provided on the periphery of the gas passage 14. In this way, the ejecting efficiency is higher, the gas introduction is more uniform, and the combustion is more uniform and sufficient.

[0053] Specifically, a cover plate 19 can be provided at the bottom end of the bottom shell 10. The cover plate 19 is sealed at the bottom end of the bottom shell 10 through structures such as screws or bolts. The air outlet 191 is provided on the cover plate 19, and the adjusting plate 16 can also be installed with the cover plate 19 as the installation base. Of course, the bottom end of the bottom shell 10 can also be directly processed into a blind end, and the air outlet 191 is directly provided at the bottom end of the bottom shell 10 when the bottom shell 10 is processed.

[0054] Furthermore, a water retaining edge extending outward is provided along the outer periphery of the ejector pipe seat 20; the water retaining edge extends beyond the outer peripheral edge of the top end of the bottom shell 10 and the outer periphery of the burner base 40; the water retaining edge gradually slopes downward from the inside to the outside.

[0055] In order to reduce the hygiene problems caused by the overflow of soup, a water retaining edge is provided at the edge of the ejector pipe seat 20. Since the water retaining edge extends outward from the connection position between the ejector pipe seat 20 and the bottom shell 10, when there is soup or water overflow, the water retaining edge can guide the soup or water to flow outward and downward, avoiding the connection position between the ejector pipe seat 20 and the bottom shell 10, and preventing the soup in the cooking utensil from overflowing and entering the cavity 11.

[0056] Furthermore, a water receiving tray 15 can be provided along the outer peripheral edge of the top end of the bottom shell 10. The water receiving tray 15 extends beyond the water retaining edge and gradually slopes downward from the inside to the outside. When assembling the ejector seat, the bottom shell 10 of the ejector seat extends into the cooking appliance, and the water receiving tray 15 on the bottom shell 10 can be connected to the cooking appliance panel. The water receiving tray 15 of the bottom shell 10 can effectively prevent stains from entering the cavity 11 and the inside of the cooking appliance at the connection part between the cavity 11 and the liquid receiving tray of the cooking appliance panel.

[0057] Furthermore, an air supplement channel 42 is provided along the outer peripheral edge of the burner base 40; the air supplement channel 42 penetrates through to the middle of the burner base 40 and is annularly distributed on the outer periphery of the burner base. In this way, a secondary air inlet is left between the burner base 40 and the ejector pipe seat 20. Since when the gas is ejected, the combustion-supporting air is mainly introduced through the air outlet 191 at the bottom end of the ejector seat and is mixed and introduced at the air inlet end position of the ejector pipe 30, when the ejection is guided to the upper burner base 40 above, there may be a situation of insufficient combustion-supporting air. Therefore, the air supplement channel 42 is provided on the outer side of the burner base 40, and the air supplement channel secondarily introduces the combustion-supporting air required for combustion outside the burner ring 50, increasing the gas combustion efficiency.

[0058] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A safe air inlet burner, characterized in that , including, An ejector base, within which there is a cavity and an ejector tube. The top end of the ejector base is the first end, and the bottom end of the ejector base is the second end. There is an air outlet at the second end, and the air outlet is communicated with the cavity. The ejector tube is arranged at the first end. The air inlet end of the ejector tube extends into the cavity. An ejector nozzle is arranged in the cavity, and the ejector nozzle corresponds to and penetrates the air inlet end of the ejector tube. A burner cap assembly, including a burner cap base and a burner cap ring. The burner cap base seals the first end. There is an air inlet cavity in the burner cap base, and the air inlet cavity is used to be communicated with the air outlet end of the ejector tube after the burner cap base seals the first end. The burner cap ring seals the burner cap base and is communicated with the air inlet cavity.

2. The safety air inlet burner according to claim 1, wherein There is an adjusting plate at the second end. The adjusting plate is movably installed at the second end, and the adjusting plate is used to adjust the size of the air outlet during the movement.

3. The safety air intake burner according to claim 2, wherein, There is an adjusting opening and a covering section on the adjusting plate. The adjusting plate is rotatably installed at the second end. The adjusting plate is used to drive the covering section to gradually cover or stagger the air outlet during the rotation, and the adjusting opening is used to correspond to the air outlet when the covering section is staggered from the air outlet.

4. The safety air inlet burner according to claim 3, characterized in that, There is a first locking part on the adjusting plate, and there are multiple second locking parts at the second end. The multiple second locking parts are spaced apart in the rotation direction of the adjusting plate, and the first locking part is used to lock with one of the second locking parts.

5. The safety air inlet burner according to claim 4, characterized in that, The first locking part is a spring pin, and the second locking part is a positioning hole. The spring pin is used for locking cooperation with the positioning hole.

6. The safety air inlet burner according to claim 1, wherein There is a gas channel in the cavity. There is a gas connector outside the ejector base, and the gas connector is communicated with the gas channel. The ejector nozzle is arranged on the gas channel and is communicated with the gas channel.

7. The safety air inlet burner according to any one of claims 1-6, characterized in that, The ejector base includes a bottom shell and an ejector tube seat. The cavity is arranged in the bottom shell. The ejector tube seat seals the top end of the bottom shell. There is the air outlet at the bottom end of the bottom shell. The ejector tube is arranged on the ejector tube seat. The burner cap base seals the ejector tube seat.

8. The safety air inlet burner according to claim 7, characterized in that, There is a water retaining edge extending outward along the outer periphery of the ejector tube seat. The water retaining edge extends out of the outer periphery of the top end of the bottom shell and the outer periphery of the burner cap base. The water retaining edge slopes downward gradually from inside to outside.

9. The safety air inlet burner according to claim 8, wherein, There is a water receiving tray at the outer periphery of the top end of the bottom shell. The water receiving tray extends out of the water retaining edge and slopes downward gradually from inside to outside.

10. The safety air inlet burner according to any one of claims 1-6, characterized in that, There is a gas supplement channel at the outer peripheral edge of the burner cap base. The gas supplement channel penetrates to the middle of the burner cap base.

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