Inner ring fire cover and combustor comprising same

Abstract

The utility model provides an inner ring fire cover and a burner comprising the same, the inner ring fire cover comprises a blocking eave and a plurality of fire holes, the blocking eave and the top of the inner ring fire cover are arranged in a spaced mode, and the top of the blocking eave is located below the top of the inner ring fire cover. The fire holes are annularly formed in the side portion of the inner ring fire cover, and at least one row of fire holes are located between the top of the blocking eave and the top of the inner ring fire cover. The fire holes are formed in the area between the top of the blocking eave and the top of the inner ring fire cover, so that the fire holes are formed in all positions of the peripheral side of the inner ring fire cover, annular fire can be formed when the fire holes burn, and the problem that the bottom of a pot is heated unevenly due to the fact that no fire hole exists at the position where the blocking eave is flush with the top of the inner ring fire cover is solved. In addition, at least one row of fire holes are located in the area, and when multiple rows of fire holes are located in the area, the heat efficiency of heating the cookware can be guaranteed when the inner ring fire cover combusts, and the heating uniformity of the cookware is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to an inner ring fire cover and a burner comprising the same. Background Art

[0002] The inner ring fire cover of the burner is mainly used to heat the cookware and ignite the burner. It is usually provided with a fire protection structure and a guard eave cooperating with the fire protection structure. The guard eave is arranged above the fire protection structure and is used to block the overflow of the cookware, so as to prevent the overflow from clogging the fire hole and the fire protection structure of the inner ring fire cover and causing the burner to go out accidentally.

[0003] The eaves are usually set on the side of the inner ring fire cover and are set flush with the top of the inner ring fire cover to ensure effective blocking of overflow. This makes it impossible to set the fire holes on the circumferential side of the inner ring fire cover at the eaves. In addition, the fire holes corresponding to the ignition needles of the fire protection structure are set in the horizontal direction with a relatively flat angle, which is mainly used for ignition. In addition, the eaves are set on the upper part. Through the infrared camera shooting of the bottom of the pot, it is found that the circumferential heating of the bottom of the pot has poor thermal efficiency at the eaves, and there is a problem of uneven heating. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect of uneven heating of the bottom of the cookware by the inner ring fire cover of the burner in the prior art, and to provide an inner ring fire cover and a burner comprising the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] An inner ring fire cover, comprising an eaves and a plurality of fire holes, wherein the eaves are spaced apart from the top of the inner ring fire cover and the top of the eaves is located below the top of the inner ring fire cover, the fire holes are arranged in a ring on the side of the inner ring fire cover and at least one row of the fire holes is located between the top of the eaves and the top of the inner ring fire cover.

[0007] In this solution, by setting fire holes in the area between the top of the eaves and the top of the inner ring fire cover, there are fire holes at various positions around the inner ring fire cover, and a ring fire can be formed when the fire holes burn, thereby overcoming the problem of uneven heating of the bottom of the pot due to the absence of fire holes at the lower eaves when the eaves are flush with the top of the inner ring fire cover. In addition, at least one row of fire holes is located in this area, and when multiple rows of fire holes are located in this area, the thermal efficiency of heating the pot can be guaranteed when the inner ring fire cover burns, further improving the uniformity of heating the pot.

[0008] Preferably, a plurality of rows of ignition holes are provided below the eaves, and the ignition holes are provided corresponding to the ignition pins.

[0009] In this solution, by providing multiple rows of ignition holes and corresponding ignition needles, compared with a single ignition hole, the ignition needle can ignite other ignition holes when one of the ignition holes fails to ignite, thereby correspondingly improving the ignition success rate.

[0010] Preferably, a diameter of a row of the ignition holes close to the eaves is larger than a diameter of a row of the ignition holes away from the eaves.

[0011] In the present scheme, a row of ignition holes away from the eaves is set to have a smaller diameter, so that when the gas flows from the inner ring fire cover into the ignition hole, the gas flow rate is lower than the gas flow rate in the ignition hole with a larger diameter. The lower gas flow rate can accumulate at the ignition hole, and the flame preservation performance of the ignition hole is correspondingly improved compared to the faster gas flow rate, thereby reducing the chance of accidental flameout of the inner ring fire cover.

[0012] Preferably, the inner ring fire cover is also provided with a first fire protection hole, one end of the first fire protection hole is connected to the channel for the gas supply to flow to the ignition hole away from the eaves, and the flow direction of the first fire protection hole and the channel form an angle of 90 to 135 degrees in the horizontal direction, and the other end of the first fire protection hole is arranged from the side of the eaves corresponding to the thermocouple.

[0013] In this solution, by setting the first fire-keeping hole, and the first fire-keeping hole is inclined with the channel, the gas entering the ignition hole far away from the eaves is diverted when passing through the first fire-keeping hole, thereby further reducing the gas flow rate. At the same time, the first fire-keeping hole heats the thermocouple so that the burner can avoid accidental flameout due to overflow, thereby improving the user experience. In addition, the first fire-keeping hole heats the thermocouple from the side of the eaves, so that when the overflow flows down from the end of the eaves and blocks the ignition hole, the ignition hole and the first fire-keeping hole are located in different areas, thereby preventing the first fire-keeping hole from being blocked by the overflow, thereby further improving the fire-keeping performance.

[0014] Preferably, a fire transfer groove is further provided below the eaves, and the fire holes located on both sides of the eaves are connected with the ignition holes close to the eaves through the fire transfer groove.

[0015] In this solution, a fire transfer groove is provided to quickly ignite the fire holes on both sides of the eaves, thereby achieving smooth combustion of the inner ring fire cover, and the fire transfer groove is connected to the ignition holes close to the eaves, that is, connected to the ignition holes with a faster gas flow rate, so as to respond to the user's ignition operation in time and avoid the inner ring fire cover ignition time being too long and affecting the user's experience.

[0016] Preferably, the inner fire ring cover is further provided with a second fire protection hole, which is arranged on the side of the inner fire ring cover and below the fire hole, and the second fire protection hole and the first fire protection hole are both arranged corresponding to the thermocouple.

[0017] In this solution, a second fire protection hole is provided, and the second fire protection hole is located on the side of the inner ring fire cover, further away from the eaves. On the one hand, it works together with the first fire protection hole to improve the fire protection performance. On the other hand, it can prevent the burner from accidentally shutting down when the first fire protection hole is also blocked by overflow, thus forming a double protection.

[0018] Preferably, the inner ring fire cover also includes a liquid conducting groove, which is arranged on the side of the inner ring fire cover and communicated with the top of the inner ring fire cover.

[0019] In this solution, a liquid guiding groove is provided to guide the overflowing liquid on the top of the inner ring fire cover in time, so as to prevent the fire holes of the inner ring fire cover from being blocked by the overflowing liquid.

[0020] A burner comprises the inner ring fire cover as described above.

[0021] In the present solution, the burner has the above-mentioned inner ring fire cover, so that the burner can form a ring fire when heating the cookware, thereby achieving uniform heating of the bottom of the cookware and avoiding uneven heating of some areas of the cookware. In addition, the burner also improves the fire preservation performance through the inner ring fire cover, making the burner less likely to go out, thereby correspondingly improving the user experience.

[0022] Preferably, the burner comprises a thermocouple, and the end of the thermocouple close to the inner fire ring cover is inclinedly arranged toward the first fire protection hole and the second fire protection hole of the inner fire ring cover.

[0023] In this solution, the thermocouple is tilted so that the end of the thermocouple is closer to the first fire-keeping hole and the second fire-keeping hole, thereby further improving the fire-keeping performance.

[0024] Preferably, the burner also includes an outer ring fire cover, which has a protrusion and a trapezoidal cross-section, fire holes are arranged on both sides of the protrusion, and the side close to the inner ring fire cover is a rotating fire hole, and the side away from the inner ring fire cover is a direct spray fire hole, and the outer ring fire cover is provided with a fire guide groove corresponding to the ignition hole of the inner ring fire cover, and the fire guide groove is respectively connected to the rotating fire hole and the direct spray fire hole.

[0025] In this solution, a protrusion is provided on the outer ring fire cover, and different fire holes are provided on both sides of the protrusion, so that different thermal efficiencies can be achieved when the outer ring fire cover burns to meet various cooking needs of users. In addition, a fire guide groove is provided and the fire guide groove corresponds to the ignition hole, so that fire can be transmitted in time, and rapid combustion of the outer ring fire cover can be achieved, reducing response time, and users can stir-fry and cook more quickly.

[0026] The positive and progressive effect of the utility model is that the utility model sets fire holes in the area between the top of the eaves and the top of the inner ring fire cover, so that each position of the circumference of the inner ring fire cover has fire holes, and a ring fire can be formed when the fire holes burn, thereby overcoming the problem of uneven heating of the bottom of the pot due to the fact that the eaves and the top of the inner ring fire cover are arranged flush with each other and there are no fire holes at the lower eaves. In addition, at least one row of fire holes is located in this area, and when multiple rows of fire holes are located in this area, the thermal efficiency of heating the pot can be guaranteed when the inner ring fire cover burns, further improving the uniformity of heating the pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a schematic structural diagram of a burner according to a preferred embodiment of the utility model.

[0028] Figure 2 This is a three-dimensional diagram of an inner ring fire cover according to an embodiment of the present invention.

[0029] Figure 3 It is a cross-sectional view of an inner ring fire cover according to an embodiment of the utility model.

[0030] Figure 4 This is a positional relationship diagram of the second fire protection hole and the first fire protection hole in one embodiment of the utility model.

[0031] Figure 5 This is a positional relationship diagram of a thermocouple and an inner ring fire cover according to an embodiment of the utility model.

[0032] Figure 6 This is a diagram showing the positional relationship between the fire guide groove and the outer ring fire cover according to an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] Inner ring fire cover 10

[0035] Eaves 1

[0036] Fire Hole 2

[0037] Ignition hole 3

[0038] First fire hole 4

[0039] Channel 5

[0040] Fire Transmission Slot 6

[0041] Second fire protection hole 7

[0042] Liquid guide groove 8

[0043] Outer ring fire cover 20

[0044] Bump 21

[0045] Rotating fire hole 22

[0046] Direct flame hole 23

[0047] Flash Tank 24

[0048] Ignition slot 25

[0049] Thermocouple 30

[0050] Burner 100 DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] This embodiment provides an inner ring fire cover 10, the specific structure is as follows Figure 1 , Figure 2 and Figure 3 As shown, the inner ring fire cover 10 includes an eaves 1 and a plurality of fire holes 2. The eaves 1 protrude horizontally from the side of the inner ring fire cover 10. The top of the eaves 1 is flush with the horizontal direction and is used to shield the ignition needle and other structures below the eaves, so that when overflow occurs in the pot, the overflow can be blocked by the eaves 1 to flow to the ignition needle and other structures, thereby protecting the inner ring fire cover and the burner from accidental flameout.

[0053] In this embodiment, the eaves 1 is spaced apart from the top of the inner ring fire cover 10 and the top of the eaves 1 is located below the top of the inner ring fire cover 10, the top of the inner ring fire cover 10 is flush in the horizontal direction and spaced apart from the top of the eaves 1 in the vertical direction, the top height of the inner ring fire cover 10 is higher than the top height of the eaves 1, the fire holes 2 are arranged on the side of the inner ring fire cover 10 and at least one row of fire holes 2 is located between the top of the eaves 1 and the top of the inner ring fire cover 10.

[0054] Specifically, the top of the eaves 1 and the top of the inner ring fire cover 10 are spaced apart to form a fire hole setting area, and the fire holes 2 are arranged on the side of the inner ring fire cover 10 and at least one row of fire holes 2 is arranged in the fire hole setting area. That is to say, the preset distance of the fire hole setting area can accommodate at least one row of fire holes 2. The size of the fire holes 2 is the prior art, and in order to set the fire holes 2 accordingly, the distance between the top of the preset ring fire cover 10 and the top of the eaves 1 along the vertical direction needs to be adjusted according to the actual number of fire holes 2 set, which will not be elaborated here. The example of setting a row of fire holes 2 in the fire hole setting area is used for explanation, but it is not limited thereto. The fire holes 2 located in the fire hole setting area and other fire holes away from the eaves 1 are arranged in an outer circular ring shape according to the inner ring fire hole 10, so that each position on the circumference of the inner ring fire cover 10 has a fire hole 2. When the fire holes 2 burn, a ring-shaped fire can be formed. When the inner ring fire cover 10 burns, the bottom of the cookware can be photographed by an infrared camera to see that the thermal image of the bottom of the cookware is a ring structure rather than a polygonal structure with a gap, thereby overcoming the problem of uneven heating of the bottom of the cookware due to the absence of fire holes 2 at the lower eaves 1 when the eaves 1 is set flush with the top of the inner ring fire cover 10.

[0055] In other embodiments, the fire hole setting area may be provided with multiple rows of fire holes 2, and the corresponding side of the inner ring fire cover 10 away from the eaves may also be provided with multiple rows of fire holes 2 to form multiple ring-shaped fires. On the one hand, it can ensure the thermal efficiency of heating the cookware when the inner ring fire cover 10 burns, and on the other hand, it can further improve the uniformity of heating the cookware.

[0056] like Figure 2 As shown, in the present embodiment, the side of the inner ring fire cover 10 is of a conical structure, that is, the side of the inner ring fire cover 10 has a slope, the fire holes 2 are obliquely arranged on the slope and in the projection direction, more fire holes 2 areas can be arranged compared to the side of the inner ring fire cover 10 with a cylindrical structure, so that the inner ring fire cover 10 generates more load, thereby improving the thermal efficiency of the inner ring fire cover 10.

[0057] In this embodiment, a plurality of rows of ignition holes 3 are arranged below the eaves 1, and the ignition holes 3 are arranged corresponding to the ignition pins.

[0058] Specifically, the ignition holes 3 are arranged in a horizontal direction and in multiple rows, and the ends of the multiple rows of ignition holes 3 extend out of the side of the inner ring fire cover 10 in the horizontal direction and the extension distance is less than the extension distance of the eaves 1 in the horizontal direction, so as to block the overflow of the pot by the eaves 1 to prevent the ignition holes 3 from being blocked by the overflow and extinguishing the fire. The ignition needle is arranged in a vertical direction and close to the ignition hole 3. By arranging multiple rows of ignition holes 3 and corresponding ignition needles, compared with a single ignition hole 3, the ignition needle can ignite other ignition holes 3 when one of the ignition holes 3 is not ignited, thereby correspondingly improving the ignition success rate.

[0059] In this embodiment, the diameter of the row of ignition holes 3 close to the eaves 1 is greater than the diameter of the row of ignition holes 3 far from the eaves 1 .

[0060] Specifically, a row of ignition holes 3 close to the eaves 1 is located above a row of ignition holes 3 away from the eaves 1. This embodiment is described by taking two rows of ignition holes 3 as an example, but is not limited thereto. The row of ignition holes 3 close to the eaves 1 is closer to the ignition needle than the row of ignition holes 3 away from the eaves 1, and the diameter of the row of ignition holes 3 close to the eaves 1 is larger than that of the row of ignition holes 3 away from the eaves 1. By setting the diameter of the row of ignition holes 3 away from the eaves 1 to be smaller, when the gas flows from the inner ring fire cover 10 into the ignition hole 3, the gas flow rate is lower than the gas flow rate in the ignition hole 3 with a larger diameter. The lower gas flow rate can accumulate at the ignition hole 3, and the flame preservation performance of the ignition hole 3 is correspondingly improved compared to the faster gas flow rate, thereby reducing the probability of accidental flameout of the inner ring fire cover 10.

[0061] Furthermore, if Figure 3 As shown, the inner ring fire cover 10 is also provided with a first fire protection hole 4, one end of the first fire protection hole 4 is connected to the channel 5 for supplying gas to flow to the ignition hole 3 away from the eaves 1, and the flow direction of the first fire protection hole 4 and the channel 5 is at an angle of 90 to 135 degrees along the horizontal direction, and the other end of the first fire protection hole 4 is arranged from the side of the eaves 1 corresponding to the thermocouple 30.

[0062] Specifically, the inner ring fire cover 10 is connected to the ignition hole 3 far away from the eaves 1 through the channel 5, and the gas flows from the inner ring fire cover 10 into the channel 5 and flows to the ignition hole 3 through the channel 5 and is finally ignited by the ignition needle to realize the ignition of the inner ring fire cover 10. The channel 5 is a cylindrical structure and is also connected to a first fire-keeping hole 4. The first fire-keeping hole 4 is located at the end and side of the eaves 1 respectively as viewed in the projection direction, wherein the ignition hole 3 and the channel 5 are arranged in the same direction and are located at the end of the eaves 1, the first fire-keeping hole 4 is arranged at an angle to the flow direction of the channel 5, and the end of the first fire-keeping hole 4 extends from the side of the eaves 1, when the flow direction of the first fire-keeping hole 4 and the channel 5 is 90°, the gas will be diverted when flowing from the channel 5 and flow into the ignition hole 3 and the first fire-keeping hole 4 respectively, thereby further reducing the gas flow rate, and at the same time, the thermocouple 30 is heated by the first fire-keeping hole 4 so that the burner can avoid accidental flameout due to overflow, thereby improving the user experience. Of course, when the flow directions of the first fire protection hole 4 and the channel 5 are at other angles, such as 135°, the gas flow rate can be further reduced compared with 90°, and the fire protection performance is correspondingly improved, which will not be elaborated here.

[0063] In addition, the first fire protection hole 4 heats the thermocouple 30 from the side of the eaves 1, so that when the overflow liquid flows down from the end of the eaves 1 and blocks the ignition hole 3, the ignition hole 3 and the first fire protection hole 4 are located in different areas of the eaves 1 to prevent the first fire protection hole 4 from being blocked by the overflow liquid, thereby further improving the fire protection performance.

[0064] In this embodiment, a fire transfer groove 6 is further provided below the eaves 1 , and the fire holes 2 located on both sides of the eaves 1 are connected with the ignition holes 3 close to the eaves 1 through the fire transfer groove 6 .

[0065] Specifically, the fire transfer groove 6 is arranged in the horizontal direction and extends toward the side of the inner ring fire cover 10 and extends into the fire hole 2, so that the fire holes 2 on both sides of the inner ring fire cover 10 are connected with the ignition holes 3 on the side close to the eaves 1. When the ignition holes 3 on the side away from the eaves 1 or the ignition holes 3 on the side close to the eaves 1 are successfully ignited by the ignition needle, the generated flame will burn under the eaves 1. By setting the fire transfer groove 6, the fire holes 2 on both sides of the eaves 1 can be quickly ignited when the ignition hole 3 is burning, so that the inner ring fire cover 10 can burn smoothly. The fire transfer groove 6 is connected with the ignition hole 3 close to the eaves 1, that is, it is connected with the ignition hole 3 with a faster gas flow rate, which can respond to the user's ignition operation in time and avoid the inner ring fire cover 10 The ignition time is too long and affects the user's experience.

[0066] like Figure 4 and Figure 5 As shown, in this embodiment, the inner ring fire cover 10 is also provided with a second fire protection hole 7, which is arranged on the side of the inner ring fire cover 10 and below the fire hole 2, and the second fire protection hole 7 and the first fire protection hole 4 are both arranged corresponding to the thermocouple 30.

[0067] Specifically, a plurality of rows of fire holes 2 are provided on the side of the inner ring fire cover 10, and the plurality of rows of fire holes 2 are distributed layer by layer and fire holes 2 are provided in the areas on both sides of the inner ring fire cover 10 close to the eaves 1. On this basis, the second fire protection hole 7 is provided below the fire hole 2 close to the side of the eaves 1, and from the appearance, the second fire protection hole 7 is also located on the surface of the inner ring fire cover 10 close to the side of the eaves 1. The additionally provided second fire protection hole 7 is at a certain distance from the eaves 1, and the second fire protection hole 7 can be ignited by burning through the fire hole 2, so that its combustion is relatively independent. Under the joint action of the second fire protection hole 7 and the first fire protection hole 4, on the one hand, the fire protection performance can be further improved, and on the other hand, when the first fire protection hole 4 is also blocked by overflow, the burner can be prevented from accidentally going out because of the distance between it and the first fire protection hole 4 on the side of the eaves 1, thereby forming a double protection.

[0068] In this embodiment, the inner ring fire cover 10 further includes a liquid conducting groove 8 , which is disposed on the side of the inner ring fire cover 10 and communicated with the top of the inner ring fire cover 10 .

[0069] Specifically, the top of the inner ring fire cover 10 is arranged flush in the horizontal direction, and the side of the inner ring fire cover 10 is also provided with a liquid guiding groove 8, which is connected to the top of the inner ring fire cover 10. In this embodiment, four liquid guiding grooves 8 are provided and are arranged at intervals on the side of the inner ring fire cover 10, so that when the overflow accumulates on the top of the inner ring fire cover 10, the overflow can be discharged through the liquid guiding groove 8 in time, thereby improving the cleanliness of the inner ring fire cover 10 and reducing its cleaning difficulty. It can also prevent the overflow from overflowing from the top of the inner ring fire cover 10 when the overflow accumulates and blocking the fire holes 2 on the side of the inner ring fire cover 10.

[0070] In other embodiments, the number of the liquid guiding grooves 8 may be changed accordingly, such as 6 or 8, which can also achieve the purpose of timely guiding out the overflow liquid, and will not be elaborated herein.

[0071] like Figure 1 and Figure 6 As shown, this embodiment further provides a burner 100 , and the burner 100 includes the inner ring fire cover 10 mentioned above.

[0072] Specifically, the burner 100 has the above-mentioned inner ring fire cover 10, the top of the eaves 1 arranged on the inner ring fire cover 10 is located below the top of the inner ring fire cover 10, and at least one row of fire holes 2 is arranged in the area between the top of the eaves 1 and the top of the inner ring fire cover 10, so that the burner 100 can form a ring fire when heating the cookware, to compensate for the problem of uneven heating of the bottom of the cookware caused by the absence of fire holes 2 at the eaves 1, thereby achieving uniform heating of the bottom of the cookware.

[0073] In addition, the burner 100 also shields the overflowing liquid through the retaining eaves 1 on the inner ring fire cover 10, thereby improving the fire protection performance, making the burner 100 less likely to go out, and correspondingly improving the user experience.

[0074] like Figure 5 As shown, in this embodiment, the burner 100 includes a thermocouple 30 , and the end of the thermocouple 30 close to the inner ring fire cover 10 is inclined toward the first fire protection hole 4 and the second fire protection hole 7 of the inner ring fire cover 10 .

[0075] Specifically, the thermocouple 30 is arranged along the vertical direction and the end of the thermocouple 30 toward the inner ring fire cover 10 is inclined from the vertical direction toward the inner ring fire cover 10. In this case, the end of the thermocouple 30 is closer to the first fire protection hole 4 and the second fire protection hole 7 on the inner ring fire cover 10 than the end of the thermocouple 30 arranged in the vertical direction. When the first fire protection hole 4 and the second fire protection hole 7 are burning, the thermocouple 30 can be continuously heated to ensure the power supply of the burner 100, and the fire protection performance is further improved.

[0076] In this embodiment, the burner 100 also includes an outer ring fire cover 20, which has a protrusion 21 and a trapezoidal cross-section. Fire holes 2 are arranged on both sides of the protrusion 21, and the side close to the inner ring fire cover 10 is a rotating fire hole 22, and the side away from the inner ring fire cover 10 is a direct spray fire hole 23. The outer ring fire cover 20 is provided with a fire guide groove 24 corresponding to the ignition hole 3 of the inner ring fire cover 10, and the fire guide groove 24 is respectively connected to the rotating fire hole 22 and the direct spray fire hole 23.

[0077] Specifically, the protrusion 21 is a structure of the outer ring fire cover 20 away from the base of the burner 100. The side of the protrusion 21 has a slope. The fire holes 2 are arranged obliquely on the slope and can be arranged with more fire holes 2 in the projection direction compared with the side of the outer ring fire cover 20 with a rectangular structure, so that the outer ring fire cover 20 generates more load and improves the thermal efficiency of the outer ring fire cover 20. Multiple rows of fire holes 2 are arranged on the outer ring fire cover 20, among which the fire holes 2 located on the slope of the protrusion 21 away from the inner ring fire cover 10 are the same as the fire holes 2 on the inner ring fire cover 10, and the fire holes 2 on the slope of the protrusion 21 close to the inner ring fire cover 10 are rotating fire holes 22. The rotating fire holes 22 themselves have a certain angle along the radial direction of the outer ring fire cover 20, so that when the rotating fire holes 22 are ignited, in addition to the annular fire, a kind of firepower that rotates spirally due to the angle setting is generated. This firepower can further improve the thermal efficiency of the outer ring fire cover 20. The rotating fire holes 22 are prior art and will not be described in detail here.

[0078] In addition, a direct fire hole 23 is provided on the side of the outer ring fire cover 20 away from the inner ring fire cover 10. The direct fire hole 23 is located below the slope of the protrusion 21 and is a direct fire hole 23 in the prior art. By providing a protrusion 21 on the outer ring fire cover 20 and providing different fire holes 2 on both sides of the protrusion 21, different thermal efficiencies can be achieved when the outer ring fire cover 20 burns to meet various cooking needs of users.

[0079] In addition, the outer ring fire cover 20 is also provided with a fire guide groove 24, which extends from the radial direction of the outer ring fire cover 20 and the two ends of the fire guide groove 24 are connected to the rotating fire hole 22 and the direct spraying fire hole 23, and an ignition groove 25 is provided in the horizontal direction on the side of the outer ring fire cover 20 close to the inner ring fire cover 10, and the ignition groove 25 and the fire guide groove 24 are both provided corresponding to the ignition hole 3 of the inner ring fire cover 10, so that when the outer ring fire cover 20 is ignited, the flame can be quickly transferred from the ignition groove 25 and the fire guide groove 24 in time and ignite the rotating fire hole 22 and the direct spraying fire hole 23, so as to realize the rapid combustion of the outer ring fire cover 20, reduce the response time, and the user can perform stir-frying cooking more quickly. The intensity of the fire hole 2 of the inner ring fire cover 10 and the outer ring fire cover 20 of the burner 100 is about 8W / mm 2 By arranging the fire holes 2 of the inner ring fire cover 10 and the outer ring fire cover 20, the total load of the burner 100 can reach 5.2kW, and the load of the inner ring fire cover 10 is not less than 1.5kW.

[0080] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An inner ring fire cover, comprising a guardrail and a plurality of fire holes, characterized in that: The eaves are spaced apart from the top of the inner ring fire cover and the top of the eaves is located below the top of the inner ring fire cover, the fire holes are arranged on the side of the inner ring fire cover and at least one row of the fire holes is located between the top of the eaves and the top of the inner ring fire cover.

2. The inner ring fire cover according to claim 1, characterized in that: A plurality of rows of ignition holes are arranged below the eaves, and the ignition holes are arranged corresponding to the ignition pins.

3. The inner ring fire cover according to claim 2, characterized in that: The diameter of the ignition holes in a row close to the eaves is greater than the diameter of the ignition holes in a row far from the eaves.

4. The inner ring fire cover according to claim 3, characterized in that: The inner ring fire cover is also provided with a first fire protection hole, one end of which is connected to the channel for the gas supply to flow to the ignition hole away from the eaves, and the flow direction of the first fire protection hole and the channel form an angle of 90 to 135 degrees in the horizontal direction, and the other end of the first fire protection hole is arranged from the side of the eaves corresponding to the thermocouple.

5. The inner ring fire cover according to claim 3, characterized in that: A fire transfer groove is also provided below the eaves, and the fire holes located on both sides of the eaves are connected with the ignition holes close to the eaves through the fire transfer groove.

6. The inner ring fire cover according to claim 4, characterized in that: The inner ring fire cover is also provided with a second fire protection hole, which is arranged on the side of the inner ring fire cover and below the fire hole. The second fire protection hole and the first fire protection hole are both arranged corresponding to the thermocouple.

7. The inner ring fire cover according to claim 1, characterized in that: The inner ring fire cover also includes a liquid guide groove, which is arranged on the side of the inner ring fire cover and communicated with the top of the inner ring fire cover.

8. A burner, characterized in that: The burner comprises an inner ring fire cover as claimed in any one of claims 1-7.

9. The burner according to claim 8, characterized in that The burner comprises a thermocouple, and the end of the thermocouple close to the inner ring fire cover is inclinedly arranged toward the first fire protection hole and the second fire protection hole of the inner ring fire cover.

10. The burner according to claim 8, characterized in that The burner also includes an outer ring fire cover, which has a protrusion and a trapezoidal cross-section. Fire holes are arranged on both sides of the protrusion, and the side close to the inner ring fire cover is a rotating fire hole, and the side away from the inner ring fire cover is a direct spray fire hole. The outer ring fire cover is provided with a fire guide groove corresponding to the ignition hole of the inner ring fire cover, and the fire guide groove is respectively connected to the rotating fire hole and the direct spray fire hole.

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