Fire cover, combustor and gas stove

Abstract

The invention discloses a burner cap, a burner and a gas stove. The fire cover comprises a fire cover body, a plurality of fire rotating holes are formed in the upper side face of the fire cover body, the fire rotating holes are obliquely formed in the clockwise direction or the anticlockwise direction of the fire cover body from bottom to top, and a gas cavity communicated with the fire rotating holes is formed in the lower side of the fire cover body. A partition part is arranged in the middle of the fire spinning hole and divides the fire spinning hole into a first fire spinning hole and a second fire spinning hole, and the first fire spinning hole is located on the inner side of the second fire spinning hole. The burner cap provided by the invention is simple in structure, relatively stable in swirling flame and relatively high in combustion efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly to a burner head, a burner and a gas stove. Background Art

[0002] With the development of the home appliance market, the sales proportion of high-performance domestic gas cookers has been continuously rising. To meet the need for high performance, major manufacturers are competing to develop a new generation of high-efficiency burners to consolidate their market positions.

[0003] The swirling flame gas stove has the advantages of high thermal efficiency, concentrated firepower and a wide heating surface. However, in the swirling flame burner, it is still difficult to adequately supplement the secondary air, and the swirling flame is prone to lift-off, resulting in low flame stability. Therefore, at present, the burners on the market are still mainly direct flame burners, and the development of swirling flame burners is restricted.

[0004] Therefore, there is an urgent need for a burner head to solve the above problems. Summary of the Invention

[0005] The present invention aims to at least partly solve one of the problems existing in the related art. For this purpose, the present invention provides a burner head with a simple structure, a relatively stable swirling flame and a high combustion efficiency.

[0006] The above object is achieved by the following technical solutions:

[0007] A burner head includes a burner head body. A plurality of swirling holes are formed in the upper side surface of the burner head body. The swirling holes are inclined upward from bottom to top in the clockwise or counterclockwise direction of the burner head body. A gas chamber communicating with the swirling holes is formed in the lower side of the burner head body. A partition portion is arranged in the middle of the swirling holes. The partition portion divides the swirling holes into a first swirling hole and a second swirling hole. The first swirling hole is located inside the second swirling hole.

[0008] Optionally, the upper side surface of the partition portion is lower than the upper side surface of the burner head to form a first flame stabilizing groove. The opening of the first flame stabilizing groove faces the same direction as the swirling holes. The outer end of the first flame stabilizing groove communicates with the second swirling hole, and the inner end of the first flame stabilizing groove communicates with the first swirling hole.

[0009] Optionally, a second flame stabilizing groove with an upward opening is arranged inside the first swirling hole, and a third flame stabilizing groove with an upward opening is arranged outside the second swirling hole.

[0010] Optionally, the bottom side surface of the second flame stabilizing groove is inclined upward from bottom to top toward the inside, and the bottom side surface of the third flame stabilizing groove is inclined upward from bottom to top toward the outside.

[0011] Optionally, a plurality of protruding portions are provided on the upper side of the burner cap body of the burner cap. The plurality of protruding portions are arranged along the circumferential direction of the upper side of the burner cap. The swirling fire holes are formed on the sides of the plurality of protruding portions with the same orientation. The swirling fire holes are arranged higher than the upper side of the burner cap. The partition portion is arranged lower than the side of the protruding portion to form the first flame stabilizing groove.

[0012] Optionally, when the swirling fire hole is inclined upward in the clockwise direction of the burner cap body from bottom to top, the protruding portion is inclined outward in the counterclockwise direction of the burner cap body from inside to outside; when the swirling fire hole is inclined upward in the counterclockwise direction of the burner cap body from bottom to top, the protruding portion is inclined outward in the clockwise direction of the burner cap body from inside to outside.

[0013] Optionally, the protruding portion is hollow to form a gas mixing chamber. The partition portion is arranged in the middle of the gas mixing chamber to divide the gas mixing chamber into a first gas mixing chamber and a second gas mixing chamber. The upper end of the first gas mixing chamber is communicated with the first swirling fire hole, the lower end of the first gas mixing chamber is communicated with the gas chamber, the upper end of the second gas mixing chamber is communicated with the second swirling fire hole, and the lower end of the second gas mixing chamber is communicated with the gas chamber.

[0014] Optionally, a third swirling fire hole is formed in the middle of the partition portion. The upper end of the third swirling fire hole is communicated with the first flame stabilizing groove, and the lower end of the third swirling fire hole is communicated with the gas chamber.

[0015] Optionally, the third swirling fire hole is inclined and has the same inclination direction as the first swirling fire hole and the second swirling fire hole.

[0016] Optionally, the diameters of the first gas mixing chamber and the second gas mixing chamber are both gradually decreased from bottom to top.

[0017] Optionally, the inner walls of the first gas mixing chamber and the second gas mixing chamber are both arc-shaped surfaces.

[0018] Optionally, the outer side surface of the protruding portion is inclined downward from the middle to both sides along the circumferential direction of the burner cap body.

[0019] Optionally, the shape of the outer side surface of the protruding portion is an arc-shaped surface.

[0020] Optionally, a through hole is provided in the middle of the burner cap body.

[0021] Optionally, a plurality of direct fire holes communicated with the gas chamber are provided on the circumferential side of the burner cap body.

[0022] On the other hand, the present invention provides a burner, including the above-mentioned burner cap.

[0023] On yet another aspect, the present invention provides a gas stove, including the above-mentioned burner.

[0024] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0025] The burner cap provided by the present invention is provided with a partition part in the middle of the swirling fire holes, so that the swirling fire holes are separated into a first swirling fire hole and a second swirling fire hole, so that secondary air can flow to the first swirling fire hole and the second swirling fire hole respectively from above the partition part, thereby increasing the amount of secondary air at the swirling fire holes, and further improving the combustion efficiency of the swirling fire flame. In addition, the gas flowing upward from the first swirling fire hole and the second swirling fire hole can form a partial gas eddy above the partition part, thereby reducing the flow rate of part of the gas, playing a role in stabilizing the flow, and facilitating the improvement of the flame-lifting problem of the swirling fire flame. Moreover, a mutual flame-stabilizing effect can be achieved between the first swirling fire hole and the second swirling fire hole, further improving the flame-lifting problem of the swirling fire flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic perspective view of the burner cap provided in the first specific embodiment of the present invention;

[0027] Figure 2 is Figure 1 an enlarged view of part A in

[0028] Figure 3 is a bottom view of the burner cap provided in the first specific embodiment of the present invention;

[0029] Figure 4 is Figure 3 an enlarged view of part C in

[0030] Figure 5 is a side view of the burner cap provided in the first specific embodiment of the present invention;

[0031] Figure 6 is a top view of the burner cap provided in the first specific embodiment of the present invention;

[0032] Figure 7 is Figure 6 a cross-sectional view taken along line B-B in

[0033] Figure 8 is Figure 7 an enlarged view of part E in

[0034] Figure 9 is a schematic perspective view of the burner cap provided in the second specific embodiment of the present invention from one angle;

[0035] Figure 10 is Figure 9 an enlarged view of part E in

[0036] Figure 11 is a schematic perspective view of the burner cap provided in the second specific embodiment of the present invention from another angle;

[0037] Figure 12 is Figure 11 An enlarged view of the position F in

[0038] Figure 13 It is a three-dimensional structural schematic diagram of another angle of the burner cap provided by the second specific embodiment of the present invention;

[0039] Figure 14 is Figure 13 A cross-sectional view taken along the line G-G in

[0040] Figure 15 is Figure 14 An enlarged view of the position H in

[0041] In the figure:

[0042] 1. Burner cap; 10. Through hole; 11. Burner cap body; 111. Upper side surface of the burner cap; 12. Swirling flame hole; 121. First swirling flame hole; 122. Second swirling flame hole; 13. Partition part; 131. Third swirling flame hole; 14. Protrusion part; 141. First side surface; 142. Second side surface; 15. First flame stabilizing groove; 16. Gas chamber; 17. Direct flame hole; 18. Gas mixing chamber; 181. First gas mixing chamber; 182. Second gas mixing chamber; 191. Second flame stabilizing groove; 192. Third flame stabilizing groove. Specific embodiments

[0043] The following embodiments are used to illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific embodiments of the present invention or making equivalent replacements for some technical features without departing from the spirit of the present invention's solution shall all be covered within the scope of the technical solution claimed by the present invention.

[0044] Embodiment 1

[0045] Please refer to Figures 1 - 8 , the present invention provides a burner cap, including a burner cap body 11. A plurality of swirling flame holes 12 are formed on the upper side surface 111 of the burner cap body 11. The swirling flame holes 12 are inclined downward to upward in the clockwise or counterclockwise direction of the burner cap body 11. A gas chamber 16 communicating with the swirling flame holes 12 is formed on the lower side of the burner cap body 11. A partition part 13 is arranged in the middle of the swirling flame holes 12. The partition part 13 divides the swirling flame holes 12 into a first swirling flame hole 121 and a second swirling flame hole 122. The first swirling flame hole 121 is located inside the second swirling flame hole 122.

[0046] The burner cap 1 provided by the present invention has a partition portion 13 disposed in the middle of the swirling fire holes 12, so that the swirling fire holes 12 are separated into a first swirling fire hole 121 and a second swirling fire hole 122, enabling secondary air to flow from above the partition portion 13 to the first swirling fire hole 121 and the second swirling fire hole 122 respectively, thereby increasing the amount of secondary air at the swirling fire holes 12 and further enhancing the combustion efficiency of the swirling fire flame. Additionally, the gas flowing upward from the first swirling fire hole 121 and the second swirling fire hole 122 can form partial gas vortices (as shown by the arrow D in Figure 8 ), thus reducing the flow rate of part of the gas, playing a role in stabilizing the flow, and facilitating the improvement of the flame-lifting problem of the swirling fire flame. Moreover, a mutual flame-stabilizing effect can be achieved between the first swirling fire hole 121 and the second swirling fire hole 122, further improving the flame-lifting problem of the swirling fire flame.

[0047] Optionally, the upper side surface of the partition portion 13 is set lower than the upper side surface 111 of the burner cap to form a first flame-stabilizing groove 15. The opening of the first flame-stabilizing groove 15 faces the same direction as the swirling fire holes 12. The outer end of the first flame-stabilizing groove 15 communicates with the second swirling fire hole 122, and the inner end of the first flame-stabilizing groove 15 communicates with the first swirling fire hole 121. By providing the first flame-stabilizing groove 15, the gas flowing upward from the first swirling fire hole 121 and the second swirling fire hole 122 can form a more obvious vortex phenomenon above the partition portion 13, further reducing the gas flow rate and achieving a further flame-stabilizing effect.

[0048] Optionally, a second flame-stabilizing groove 191 with an upward opening is provided inside the first swirling fire hole 121 to stabilize the swirling fire flame at the first swirling fire hole 121, and a third flame-stabilizing groove 192 with an upward opening is provided outside the second swirling fire hole 122 to stabilize the swirling fire flame at the second swirling fire hole 122.

[0049] Optionally, the bottom side surface of the second flame-stabilizing groove 191 is inclined inward from bottom to top, and the bottom side surface of the third flame-stabilizing groove 192 is inclined outward from bottom to top to guide the gas to flow toward the inside and outside of the burner cap body 11 respectively, increasing the distribution area of the flame, while increasing the intake of secondary air and improving the combustion efficiency.

[0050] Optionally, a plurality of convex portions 14 are provided on the upper side surface 111 of the burner cap of the burner cap body 11. The plurality of convex portions 14 are arranged along the circumferential direction of the upper side surface 111 of the burner cap. The swirling fire holes 12 are opened on the side surfaces of the plurality of convex portions 14 with the same orientation. The swirling fire holes 12 are set higher than the upper side surface 111 of the burner cap, and the partition portion 13 is set lower than the side surface of the convex portion 14 to form a first flame-stabilizing groove 15. By providing the convex portions 14, it is convenient to set the swirling fire holes 12, and at the same time, it is beneficial for the supplement of secondary air, enabling secondary air to also flow from below the swirling fire holes 12 to the swirling fire holes 12, thereby improving the combustion efficiency.

[0051] Further, along the circumference of the upper side surface 111 of the burner cap, the convex portion 14 is provided with a first side surface 141 and a second side surface 142 which are oppositely arranged, and a plurality of swirling flame holes 12 are arranged on the first side surface 141 or the second side surface 142 of the corresponding convex portion 14, so that the combustion directions of the swirling flame in the plurality of swirling flame holes 12 are the same, achieving a better swirling flame effect.

[0052] Optionally, when the swirling flame holes 12 are inclined upward from bottom to top in the clockwise direction of the burner cap body 11, the convex portion 14 is inclined from inside to outside in the counterclockwise direction of the burner cap body 11; when the swirling flame holes 12 are inclined upward from bottom to top in the counterclockwise direction of the burner cap body 11, the convex portion 14 is inclined from inside to outside in the clockwise direction of the burner cap body 11. In this way, the swirling flame holes 12 can be located on the relatively longer side surface of the convex portion 14, so as to extend the length of the swirling flame holes 12 as much as possible on the burner cap 1 with a smaller size, increase the supplementary range of the secondary air, thereby providing more secondary air for the combustion of the swirling flame and improving the combustion efficiency.

[0053] Optionally, the convex portion 14 is hollow to form a gas mixing chamber 18, and the partition portion 13 is arranged in the middle of the gas mixing chamber 18 to divide the gas mixing chamber 18 into a first gas mixing chamber 181 and a second gas mixing chamber 182. The upper end of the first gas mixing chamber 181 is communicated with the first swirling flame hole 121, the lower end of the first gas mixing chamber 181 is communicated with the gas chamber 16, the upper end of the second gas mixing chamber 182 is communicated with the second swirling flame hole 122, and the lower end of the second gas mixing chamber 182 is communicated with the gas chamber 16. Before the gas enters the first swirling flame hole 121, it is further mixed with the secondary air in the first gas mixing chamber 181, thereby improving the combustion efficiency. Similarly, before the gas enters the second swirling flame hole 122, it is further mixed with the secondary air in the second gas mixing chamber 182, thereby improving the combustion efficiency.

[0054] Optionally, the diameters of both the first gas mixing chamber 181 and the second gas mixing chamber 182 are gradually decreased from bottom to top to guide the gas to gradually flow towards the first swirling flame hole 121 and the second swirling flame hole 122.

[0055] Optionally, the inner walls of both the first gas mixing chamber 181 and the second gas mixing chamber 182 are arc surfaces, so as to ensure the smooth flow of the gas in the first gas mixing chamber 181 and the second gas mixing chamber 182.

[0056] Optionally, the outer side surface of the convex portion 14 is inclined downward from the middle to both sides along the circumference of the burner cap body 11 to facilitate the flow of the secondary air and the swirling flame along the side surface of the convex portion 14.

[0057] Optionally, the shape of the outer side surface of the convex portion 14 is an arc surface to further improve the smooth flow of the secondary air and the swirling flame.

[0058] Optionally, a through hole 10 is provided in the middle of the burner cap body 11 to facilitate the setting of a secondary air delivery channel and / or the central burner cap 1 in the middle of the burner cap body 11.

[0059] Optionally, a plurality of direct-fire holes 17 communicating with the gas chamber 16 are provided on the peripheral side of the burner cap body 11, so that the burner cap 1 has both direct-fire flames and swirling flames at the same time.

[0060] Furthermore, the direct-fire holes 17 are inclined upward from the inside to the outside, so as to facilitate the formation of an inclined upward direct-fire flame, making the direct-fire flame closer to the bottom of the cooking pot, thereby improving the heating efficiency.

[0061] Embodiment 2

[0062] As Figures 9 - 15 shown, the difference between Embodiment 2 and Embodiment 1 is that a third swirling-fire hole 131 is provided in the middle of the partition portion 13. The upper end of the third swirling-fire hole 131 communicates with the first flame-stabilizing groove 15, and the lower end of the third swirling-fire hole 131 communicates with the gas chamber 16. By providing the third swirling-fire hole 131 in the middle of the partition portion 13, since the depth of the third swirling-fire hole 131 is relatively large, the flow rate of the gas can be effectively reduced when the gas flows out through the third swirling-fire hole 131, so that the swirling-fire flame formed from the third swirling-fire hole 131 is more stable. In addition, as Figure 15 shown by the arrow I in the figure, a gas vortex is formed between the third swirling-fire hole 131 and the first swirling-fire hole 121, and a gas vortex is also formed between the third swirling-fire hole 131 and the second swirling-fire hole 122, which can further prevent the swirling-fire flame from lifting off and improve the stability of the swirling-fire flame.

[0063] Optionally, the third swirling-fire hole 131 is inclined and has the same inclination direction as the first swirling-fire hole 121 and the second swirling-fire hole 122, so as to form swirling-fire flames with the same orientation as the first swirling-fire hole 121 and the second swirling-fire hole 122.

[0064] On the other hand, the present invention provides a burner including the above-mentioned burner cap 1.

[0065] On yet another aspect, the present invention provides a gas stove including the above-mentioned burner.

[0066] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fire cover, characterized in that: The invention comprises a fire cover body (11), wherein a plurality of fire swirl holes (12) are provided on the upper side surface (111) of the fire cover of the fire cover body (11), wherein the fire swirl holes (12) are arranged obliquely from bottom to top in a clockwise direction or a counterclockwise direction of the fire cover body (11), wherein a gas chamber (16) communicating with the fire swirl holes (12) is provided on the lower side of the fire cover body (11), wherein a partition portion (13) is provided in the middle of the fire swirl holes (12), wherein the partition portion (13) separates the fire swirl holes (12) into a first fire swirl hole (121) and a second fire swirl hole (122), wherein the first fire swirl hole (121) is located on the inner side of the second fire swirl hole (122).

2. The fire cover according to claim 1, characterized in that: The upper side surface of the partition portion (13) is arranged lower than the upper side surface (111) of the fire cover to form a first flame stabilizing groove (15), the opening direction of the first flame stabilizing groove (15) is the same as the direction of the fire swirl hole (12), the outer end of the first flame stabilizing groove (15) is connected to the second fire swirl hole (122), and the inner end of the first flame stabilizing groove (15) is connected to the first fire swirl hole (121).

3. The fire cover according to claim 2, characterized in that: A second flame stabilizing groove (191) opening upward is provided on the inner side of the first fire swirl hole (121), and a third flame stabilizing groove (192) opening upward is provided on the outer side of the second fire swirl hole (122).

4. The fire cover according to claim 3, characterized in that: The bottom side surface of the second flame stabilizing groove (191) is inclined inward from bottom to top, and the bottom side surface of the third flame stabilizing groove (192) is inclined outward from bottom to top.

5. The fire cover according to claim 2, characterized in that: A plurality of protrusions (14) are arranged on the upper side surface (111) of the fire cover of the fire cover body (11), and the plurality of protrusions (14) are arranged along the circumference of the upper side surface (11) of the fire cover. The plurality of protrusions (14) are provided with the fire rotation holes (12) on the sides facing the same direction, and the fire rotation holes (12) are arranged higher than the upper side surface (111) of the fire cover. The partition portion (13) is arranged lower than the side surface of the protrusion (14) to form the first flame stabilizing groove (15).

6. The fire cover according to claim 5, characterized in that: When the fire rotation hole (12) is inclined from bottom to top in a clockwise direction toward the fire cover body (11), the protrusion (14) is inclined from inside to outside in a counterclockwise direction toward the fire cover body (11); when the fire rotation hole (12) is inclined from bottom to top in a counterclockwise direction toward the fire cover body (11), the protrusion (14) is inclined from inside to outside in a clockwise direction toward the fire cover body (11).

7. The fire cover according to claim 5, characterized in that The raised portion (14) is hollow to form a gas mixing chamber (18), and the partition portion (13) is arranged in the middle of the gas mixing chamber (18) to separate the gas mixing chamber (18) into a first gas mixing chamber (181) and a second gas mixing chamber (182), the upper end of the first gas mixing chamber (181) is communicated with the first fire swirl hole (121), the lower end of the first gas mixing chamber (181) is communicated with the gas chamber (16), the upper end of the second gas mixing chamber (182) is communicated with the second fire swirl hole (122), and the lower end of the second gas mixing chamber (182) is communicated with the gas chamber (16).

8. The fire cover according to claim 7, characterized in that A third fire swirl hole (131) is provided in the middle of the partition portion (13), the upper end of the third fire swirl hole (131) is communicated with the first flame stabilizing groove (15), and the lower end of the third fire swirl hole (131) is communicated with the gas chamber (16).

9. The fire cover according to claim 8, characterized in that The third fire spinning hole (131) is arranged tilted, and has the same tilting direction as the first fire spinning hole (121) and the second fire spinning hole (122).

10. The fire cover according to claim 7, characterized in that The diameters of the first gas mixing chamber (181) and the second gas mixing chamber (182) are gradually reduced from bottom to top.

11. The fire cover according to claim 10, characterized in that The inner walls of the first gas mixing chamber (181) and the second gas mixing chamber (182) are both cambered surfaces.

12. The fire cover according to claim 5, characterized in that The outer side surface of the protrusion (14) is arranged to be inclined downward from the middle to both sides along the circumference of the fire cover body (11).

13. The fire cover according to claim 12, characterized in that The outer side surface of the protruding portion (14) is in the shape of an arc surface.

14. The fire cover according to any one of claims 1 to 13, characterized in that: The fire cover body (11) has a through hole (10) in the middle.

15. The fire cover according to any one of claims 1 to 13, characterized in that: A plurality of straight fire holes (17) communicating with the gas chamber (16) are provided on the circumference of the fire cover body (11).

16. A burner, characterized in that: Comprising the fire cover according to any one of claims 1-15.

17. A gas stove, characterized in that: Comprising the burner as claimed in claim 16.

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