Fire cover structure, combustor and gas stove

Abstract

The utility model discloses a burner cap structure, a burner and a gas stove. The fire cover structure comprises a fire cover structure body, the fire cover structure body comprises an inner fire cover and an outer fire cover, the outer fire cover comprises an outer fire cover body, an inner ring vent groove and an outer ring gas groove are sequentially formed in the lower side of the outer fire cover body from inside to outside, and at least two fire avoiding areas are arranged on the peripheral side of the outer fire cover body. The inner fire cover comprises an inner fire cover body, the inner fire cover body is arranged in the middle of the outer fire cover body, an inner ring gas groove communicated with the inner ring vent groove is formed in the lower side of the inner fire cover body, and a plurality of outer fire holes communicated with the outer ring gas groove are formed in the lower side of the inner fire cover body. A plurality of inner fire holes corresponding to the inner ring gas grooves are formed in the peripheral side of the inner fire cover body, the inner fire holes are higher than the middle of the inner fire cover body, a liquid containing groove located on the outer side of the inner fire cover body is formed in the middle of the outer fire cover body, and a liquid outlet groove communicating the liquid containing groove with the outside of the fire cover structure is formed in the outer side of the outer fire cover body.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a burner structure, a burner, and a gas stove. Background Technology

[0002] To meet the needs of high-power combustion, uniform flame, and adjustable heat, existing stove burners employ a separate, concentric double-ring structure for the outer and inner burner caps. A common method to supplement the secondary air in the middle ring burner is to leave a certain secondary air channel between the outer and inner burner caps, allowing secondary air to enter through the bottom of the outer burner cap and replenish the secondary air inside either the middle or outer ring burner. A drawback of this existing technology is that overflow liquid can accumulate in the secondary air channel, making the burner difficult to clean.

[0003] Therefore, a flame cap structure is urgently needed to solve the above problems. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a burner cap structure that makes the burner easy to clean.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A flame cap structure includes an inner flame cap and an outer flame cap. The outer flame cap includes an outer flame cap body. An inner annular venting groove and an outer annular combustion groove are sequentially formed on the lower side of the outer flame cap body from the inside to the outside. At least two fire-resistant zones are provided around the periphery of the outer flame cap body. Multiple outer flame holes communicating with the outer annular combustion groove are formed between adjacent fire-resistant zones. The inner flame cap includes an inner flame cap body, which is located in the middle of the outer flame cap body. The lower side of the flame cap body is provided with an inner ring gas groove that communicates with the inner ring ventilation groove. The periphery of the inner flame cap body is provided with multiple inner flame holes corresponding to the inner ring gas groove. The inner flame holes are set above the middle of the inner flame cap body. The middle of the outer flame cap body is provided with a liquid holding groove located outside the inner flame cap body. The outer side of the outer flame cap body is provided with a liquid outlet groove that communicates with the liquid holding groove and the outside of the flame cap structure. The outlet of the liquid outlet groove is located above one of the fire-avoiding areas.

[0007] Optionally, the outer burner cap body has a first ignition needle mounting hole for mounting the ignition needle of the burner, and the upper side of the inner burner cap body has a shielding part. The ignition needle is installed in the first ignition needle mounting hole, the shielding part is located above the ignition needle, and the vertical projection of the ignition needle is located within the vertical projection of the shielding part. The periphery of the inner burner cap body has an ignition hole communicating with the inner ring gas groove. The ignition hole is located below the shielding part and is corresponding to the ignition nozzle of the ignition needle.

[0008] Optionally, the inner flame cap body has a first relief groove recessed inward on its periphery, the ignition hole is opened on the groove wall of the first relief groove, and the ignition tip of the ignition needle extends into the first relief groove.

[0009] Optionally, a first outer ring fire transmission hole is also provided on the periphery of the outer flame cap body. The inner end of the first outer ring fire transmission hole is connected to the liquid holding tank and located outside the ignition needle. The outer end of the first outer ring fire transmission hole is connected to the outside of the flame cap structure and located in one of the fire-avoiding areas. A second outer ring fire transmission hole is provided on the inner wall of the first outer ring fire transmission hole and is connected to the outer ring gas tank.

[0010] Optionally, the fire-avoidance zone where the outer end of the first outer ring fire transmission hole is located and the fire-avoidance zone where the outlet of the liquid outlet tank is located are two different fire-avoidance zones.

[0011] Optionally, the second outer ring fire transmission hole is located above the first outer ring fire transmission hole.

[0012] Optionally, the first outer ring fire transmission hole is inclined downwards from the inside to the outside.

[0013] Optionally, the inner flame cap and the outer flame cap are separately provided. The outer flame cap body has a shielding part in the middle. The shielding part is located on the periphery of the inner ring vent groove and protrudes from the bottom surface of the liquid holding groove. The bottom side of the inner flame cap body abuts against or connects with the shielding part.

[0014] Another aspect of this invention provides a burner, including the aforementioned flame cap structure.

[0015] In another aspect, this utility model provides a gas stove, including the burner described above.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The burner cap structure provided by this utility model has two advantages. First, by providing at least two fire-avoiding zones around the outer burner cap body, secondary air can enter the inner burner cap through these zones to aid combustion of the inner ring flame and ensure its combustion efficiency. This solves the problem of placing the secondary air intake channel of the inner ring flame between the inner and outer burner caps in the prior art, thus preventing liquid overflow into the secondary air channel between the inner and outer burner caps and making the burner difficult to clean. Second, by providing a liquid-collecting tank and a liquid-discharging tank connected to the liquid-collecting tank on the upper side of the outer burner cap body, the liquid overflow during cooking can be collected in the liquid-collecting tank first and then flow out of the burner cap structure through the liquid-discharging tank, thereby making the burner easy to clean. The liquid-discharging tank is located in the fire-avoiding zone to prevent liquid overflow from flowing into the outer burner hole. Attached Figure Description

[0018] Figure 1 This is a three-dimensional assembly structure diagram of the burner's flame cap structure, furnace head structure, and ignition needle provided in a specific embodiment of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the burner cap structure provided in a specific embodiment of the present utility model;

[0020] Figure 3 yes Figure 2 Exploded view;

[0021] Figure 4 yes Figure 2 Top view;

[0022] Figure 5 yes Figure 4 Sectional view at point AA;

[0023] Figure 6 This is a schematic diagram of the burner cap structure and ignition needle assembly provided in a specific embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the burner head structure and ignition needle assembly provided in a specific embodiment of the present utility model;

[0025] Figure 8 yes Figure 7 Top view;

[0026] Figure 9 yes Figure 8 Sectional view at point BB;

[0027] Figure 10 yes Figure 8 Sectional view at CC;

[0028] Figure 11This is a schematic diagram of the assembly of the burner and the flame cap structure provided in a specific embodiment of this utility model;

[0029] Figure 12 yes Figure 11 Top view;

[0030] Figure 13 yes Figure 12 Sectional view at point DD;

[0031] Figure 14 yes Figure 13 Enlarged view at point E in the middle;

[0032] Figure 15 This is a three-dimensional structural diagram of the burner provided in a specific embodiment of this utility model.

[0033] In the picture:

[0034] 1. Flame cap structure; 11. Outer flame cap; 111. Outer flame cap body; 1111. Flange; 112. Outer flame hole; 113. Liquid reservoir; 114. First ignition needle mounting hole; 115. Second outer ring flame transmission hole; 116. Liquid outlet; 117. First outer ring flame transmission hole; 12. Inner flame cap; 121. Inner flame cap body; 122. Inner flame hole; 123. First clearance groove; 124. Ignition hole; 125. Shielding part; 101. Inner ring vent groove; 102. Outer ring gas groove; 103. Inner ring gas groove; 10. Fire-resistant zone;

[0035] 2. Ignition needle;

[0036] 3. Burner head structure; 31. Flame distributor; 311. Flame distributor body; 312. Second clearance groove; 313. First connecting hole; 314. Guide slope; 315. Return chamber; 316. Guide arc surface; 301. First outer ring gas mixing chamber; 302. Second outer ring gas mixing chamber; 303. Inner ring gas passage; 32. Injector assembly; 321. Inner ring injector; 322. Outer ring injector; 3221. Outer ring injector cavity;

[0037] 4. Liquid receiving tray; 41. Second connecting hole; 42. Slot;

[0038] 5. Pot support; 51. Clamping block;

[0039] 6. Heat insulation ring;

[0040] 7. Stove. Detailed Implementation

[0041] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0042] Please refer to Figures 1-15 This utility model provides a burner, including a flame cap structure 1 and a burner head structure 3. The flame cap structure 1 includes an inner flame cap 12 and an outer flame cap 11. The outer flame cap 11 includes an outer flame cap body 111. An inner ring ventilation groove 101 and an outer ring gas groove 102 are sequentially formed on the lower side of the outer flame cap body 111 from the inside to the outside. At least two fire-avoiding zones 10 are provided around the periphery of the outer flame cap body 111. Multiple outer flame holes 112 communicating with the outer ring gas groove 102 are formed between adjacent fire-avoiding zones 10. The inner flame cap 12 includes an inner flame cap body 121, which is located in the middle of the outer flame cap body 111. The inner flame cap body 121... An inner ring gas channel 103 communicating with the inner ring ventilation channel 101 is provided on the lower side. Multiple inner flame holes 122 corresponding to the inner ring gas channels 103 are provided on the periphery of the inner flame cap body 121. The inner flame holes 122 are set higher than the middle of the inner flame cap body 121. A liquid holding channel 113 located outside the inner flame cap body 121 is provided in the middle of the outer flame cap body 111. A liquid outlet channel 116 communicating with the liquid holding channel 113 and the outside of the flame cap structure 1 is provided on the outer side of the outer flame cap body 111. The outlet of the liquid outlet channel 116 is located on the upper side of one of the fire-avoiding areas 10. The burner head structure 3 includes a flame distributor 31 and an injector assembly 32. The flame distributor 31 includes a flame distributor 31 body disposed on the lower side of the burner cap structure 1. The flame distributor 31 body has an inner ring gas passage 303, a first outer ring gas mixing chamber 301, and a second outer ring gas mixing chamber 302 sequentially formed from the inside to the outside. The injector assembly 32 includes an outer ring injector 322 and an inner ring injector 321. The outer ring injector 322 is connected to the first outer ring gas mixing chamber 301, and the first outer ring gas mixing chamber 301 is connected to the second outer ring gas mixing chamber 302. The outer ring gas groove 102 covers the first outer ring gas mixing chamber. The gas chamber 301 and the second outer ring gas mixing chamber 302 are connected. The second outer ring gas mixing chamber 302 is connected to the outer flame hole 112. The inner ring ejector tube 321 is connected to the inner ring gas passage 303. The inner ring gas passage 303 is connected to the inner ring ventilation groove 101. Specifically, the gas and air mixture in the outer ring ejector tube 322 is initially mixed in the outer ring ejector tube 322, and then enters the first outer ring gas mixing chamber 301 vertically upward. It spirals in the first outer ring gas mixing chamber 301 to the second outer ring gas mixing chamber 302, and then flows out from the outer flame hole 112 for combustion.

[0043] The burner provided by this utility model, on the one hand, by providing at least two fire-avoiding zones 10 around the outer burner cap body 111, allows secondary air to enter the inner burner cap 12 through these zones, thereby aiding the combustion of the inner ring flame and ensuring its combustion efficiency. This solves the problem of the prior art where the secondary air intake channel for the inner ring flame is located between the inner burner cap 12 and the outer burner cap 11, preventing overflow from entering the secondary air channel between the inner burner cap 12 and the outer burner cap 11 and causing the burner to be difficult to clean. On the other hand, by providing a liquid-collecting tank 113 and a liquid-discharging tank 116 communicating with the liquid-collecting tank 113 on the upper side of the outer burner cap body 111, the overflow during cooking can first be collected in the liquid-collecting tank 113 and then flow out of the burner cap structure 1 through the liquid-discharging tank 116, thus giving the burner the advantage of easy cleaning. The liquid-discharging tank 116 is located in the fire-avoiding zone 10 to prevent overflow from flowing into the outer burner hole 112. On the other hand, by setting a first outer ring gas mixing chamber 301 and a second outer ring gas mixing chamber 302 that are interconnected on the body of the igniter 31, the gas and air mixture of the outer ring fire can be mixed successively in the first outer ring gas mixing chamber 301, so as to improve the uniformity of gas and air mixing and thus improve the combustion efficiency of the outer ring fire.

[0044] Optionally, it also includes a heat insulation ring 6, which is disposed between the outer burner cap body 111 and the burner distributor 31 body, thereby reducing the heat transmitted from the burner cap structure 1 to the burner head structure 3 and then to the bottom shell of the stove, thereby reducing the energy efficiency loss of the gas stove.

[0045] Optionally, it also includes an ignition needle 2. A first ignition needle mounting hole 114 is provided on the outer burner cap body 111. A shielding part 125 is provided on the upper side of the inner burner cap body 121. The ignition needle 2 is installed in the first ignition needle mounting hole 114. The shielding part 125 is located above the ignition needle 2, and the vertical projection of the ignition needle 2 is within the vertical projection of the shielding part 125. An ignition hole 124 communicating with the inner ring gas groove 103 is provided on the periphery of the inner burner cap body 121. The ignition hole 124 is located below the shielding part 125 and corresponds to the ignition nozzle of the ignition needle 2. By providing the shielding part 125, the ignition needle 2 is shielded, preventing liquid overflow during cooking from flowing to the ignition needle 2.

[0046] Optionally, the inner burner cap body 121 has a first relief groove 123 recessed inward on its periphery, and the ignition hole 124 is opened on the groove wall of the first relief groove 123. The ignition nozzle of the ignition needle 2 extends into the first relief groove 123, thereby improving the shielding effect on the ignition nozzle of the ignition needle 2 and further ensuring that the overflow liquid during the cooking process will not drip onto the ignition nozzle of the ignition needle 2.

[0047] Optionally, a first outer ring flame transmission hole 117 is also provided on the periphery of the outer flame cap body 111. The inner end of the first outer ring flame transmission hole 117 is connected to the liquid holding tank 113 and located outside the ignition needle 2. The outer end of the first outer ring flame transmission hole 117 is connected to the outside of the flame cap structure 1 and located in one of the fire-avoiding areas 10. A second outer ring flame transmission hole 115 is provided on the inner wall of the first outer ring flame transmission hole 117 and connected to the outer ring gas tank 102. The first outer ring flame transmission hole 117 is opened to avoid the outer flame hole 112. It has a simple and compact structure and a good flame transmission effect.

[0048] Optionally, the inner end of the first outer ring ignition hole 117 is set higher than the bottom surface of the liquid tank 113 to prevent the overflow liquid accumulated in the liquid tank 113 from flowing to the first outer ring ignition hole 117.

[0049] Optionally, the second outer ring ignition hole 115 is located above the first outer ring ignition hole 117. When too much liquid overflows from the liquid tank 113 into the first outer ring ignition hole 117, the overflow can be prevented from spilling into the second outer ring ignition hole 115 as much as possible.

[0050] Optionally, the first outer ring flame transmission hole 117 is inclined downward from the inside to the outside, and the first outer ring flame transmission hole 117 can guide the overflow liquid to the outside of the flame cap structure 1.

[0051] Optionally, the fire-resistant zone 10 where the outer end of the first outer ring fire transmission hole 117 is located and the fire-resistant zone 10 where the outlet of the liquid outlet tank 116 is located are two different fire-resistant zones 10, so as to prevent the overflow liquid flowing out through the outlet of the liquid outlet tank 116 from flowing to the first outer ring fire transmission hole 117.

[0052] Optionally, the inner flame cap 12 and the outer flame cap 11 are separately provided to facilitate demolding of the parts. The outer flame cap body 111 has a flange 1111 in the middle. The flange 1111 is located on the periphery of the inner ring vent groove 101 and protrudes from the bottom surface of the liquid holding tank 113. The bottom side of the inner flame cap body 121 abuts or connects with the flange 1111. By providing the flange 1111, the overflow in the liquid holding tank 113 will not flow out from the inner ring vent groove 101.

[0053] Optionally, the burner 31 body is also provided with a return cavity 315 located below the first outer ring gas mixing cavity 301. The outer ring ejector tube 322 is connected to the first outer ring gas mixing cavity 301 through the return cavity 315. The bottom surface of the return cavity 315 is coplanar with the bottom surface of the outer ring ejector cavity 3221 of the outer ring ejector tube 322. By setting the return cavity 315, the gas and air mixture is initially mixed in the outer ring ejector cavity and then impacts the inner wall of the return cavity 315, slowing down the flow rate of the gas and air, further mixing the gas and air, and then flowing to the first outer ring gas mixing cavity 301 for further mixing, thereby improving the uniformity of the gas and air mixture.

[0054] Optionally, a guide slope 314 is also provided between the return chamber 315 and the first outer ring gas mixing chamber 301. The guide slope 314 is inclined from bottom to top to form an angle β with the horizontal plane, 50°≤β≤70°, so as to further reduce the flow rate of the gas and air mixture and improve the mixing uniformity of air and gas.

[0055] Optionally, the angle β between the guide slope 314 and the horizontal plane is 60°.

[0056] Optionally, a guide arc surface 316 is also provided between the guide slope 314 and the first outer ring gas mixing chamber 301, so that the gas and air mixture can flow smoothly into the first outer ring gas mixing chamber 301 through the guide arc surface 316, thereby allowing the gas and air mixture to flow spirally upward in the first outer ring gas mixing chamber 301 and the second outer ring gas mixing chamber 302.

[0057] Optionally, the device also includes a drip tray 4, which is fitted around the periphery of the burner body 31. The outer periphery of the burner body 31 has an inwardly recessed second clearance groove 312. The outer burner cap body 111 is located above the second clearance groove 312. The lower side of the second clearance groove 312 has a first connecting hole 313. The inner side of the drip tray 4 has a first connecting portion that extends into the second clearance groove 312. The first connecting portion has a second connecting hole 41 corresponding to the first connecting hole 313. The drip tray 4 and the burner body 31 are connected by screws passing through the first connecting hole 313 and the second connecting hole 41. This allows the screws to be positioned within the second clearance groove 312, and the outer burner cap body 111 covers the screws, preventing spillage during cooking from flowing into the screws and causing them to rust.

[0058] Optionally, the ignition distributor 31 body is also provided with a second ignition needle mounting hole, the bottom of the ignition needle 2 is installed in the second ignition needle mounting hole, and the upper part of the ignition needle 2 is installed in the first ignition needle mounting hole 114.

[0059] Another aspect of this utility model provides a gas stove, including the burner described above.

[0060] Optionally, it also includes a stove 7 and a pot support 5. The stove 7 has a burner mounting hole, the burner is installed in the burner mounting hole and extends from the stove 7. The upper side of the liquid receiving tray 4 is provided with a slot 42, and the bottom of the pot support 5 is provided with a locking block 51. The locking block 51 is locked in the slot 42, thereby limiting the position of the pot support 5.

[0061] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A flame cap structure, characterized in that, The device includes a flame cap structure (1), which includes an inner flame cap (12) and an outer flame cap (11). The outer flame cap (11) includes an outer flame cap body (111). The lower side of the outer flame cap body (111) is provided with an inner ring ventilation groove (101) and an outer ring gas groove (102) from the inside to the outside. At least two fire-avoiding areas (10) are provided around the outer flame cap body (111). Multiple outer flame holes (112) communicating with the outer ring gas groove (102) are provided between two adjacent fire-avoiding areas (10). The inner flame cap (12) includes an inner flame cap body (121), which is located in the middle of the outer flame cap body (111). An inner ring gas groove (103) communicating with the inner ring ventilation groove (101) is provided on the lower side of the inner flame cap body (121). A plurality of inner flame holes (122) corresponding to the inner ring gas groove (103) are provided on the periphery of the inner flame cap body (121). The inner flame holes (122) are set higher than the middle of the inner flame cap body (121). A liquid holding groove (113) located outside the inner flame cap body (121) is provided in the middle of the outer flame cap body (111). A liquid outlet groove (116) communicating with the liquid holding groove (113) and the outside of the flame cap structure (1) is provided on the outer side of the outer flame cap body (111). The outlet of the liquid outlet groove (116) is located on the upper side of one of the fire-avoiding areas (10).

2. The flame cap structure according to claim 1, characterized in that, The outer burner cap body (111) has a first ignition needle mounting hole (114) for mounting the ignition needle (2) of the burner. The inner burner cap body (121) has a shielding part (125) on its upper side. The ignition needle (2) is installed in the first ignition needle mounting hole (114). The shielding part (125) is located above the ignition needle (2), and the vertical projection of the ignition needle (2) is located within the vertical projection of the shielding part (125). The inner burner cap body (121) has an ignition hole (124) on its periphery that communicates with the inner ring gas groove (103). The ignition hole (124) is located below the shielding part (125) and is corresponding to the ignition nozzle of the ignition needle (2).

3. The flame cap structure according to claim 2, characterized in that, The inner flame cap body (121) has a first relief groove (123) recessed inward on its periphery. The ignition hole (124) is opened on the groove wall of the first relief groove (123). The ignition nozzle of the ignition needle (2) extends into the first relief groove (123).

4. The flame cap structure according to claim 2, characterized in that, The outer flame cap body (111) is provided with a first outer ring flame transmission hole (117) on its periphery. The inner end of the first outer ring flame transmission hole (117) is connected to the liquid holding tank (113) and located outside the ignition needle (2). The outer end of the first outer ring flame transmission hole (117) is connected to the outside of the flame cap structure (1) and located in one of the fire avoidance areas (10). The inner wall of the first outer ring flame transmission hole (117) is provided with a second outer ring flame transmission hole (115) connected to the outer ring gas tank (102).

5. The flame cap structure according to claim 4, characterized in that, The fire-avoidance area (10) where the outer end of the first outer ring fire-transmitting hole (117) is located and the fire-avoidance area (10) where the outlet of the liquid outlet tank (116) is located are two different fire-avoidance areas (10).

6. The flame cap structure according to claim 4, characterized in that, The second outer ring fire transmission hole (115) is located above the first outer ring fire transmission hole (117).

7. The flame cap structure according to claim 6, characterized in that, The first outer ring fire transmission hole (117) is inclined downward from the inside to the outside.

8. The flame cap structure according to any one of claims 1-7, characterized in that, The inner flame cap (12) and the outer flame cap (11) are separately provided. The outer flame cap body (111) has a flange (1111) in the middle. The flange (1111) is located on the periphery of the inner ring vent groove (101) and protrudes from the bottom surface of the liquid holding tank (113). The bottom side of the inner flame cap body (121) abuts or connects with the flange (1111).

9. A burner, characterized in that, Includes the flame cap structure (1) as described in any one of claims 1-8.

10. A gas stove, characterized in that, Includes the burner as described in claim 9.

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