Outer ring fire cap and burner

Abstract

An outer ring fire cover and a burner, the outer ring fire cover comprising: a cover body having a vertically extending first ring wall; a cover having a ring-shaped top wall, an inner ring wall extending downward from an inner side edge of the ring-shaped top wall, the inner ring wall being located in the inner periphery of the first ring wall, and the inner ring wall, the ring-shaped top wall and the first ring wall of the cover body jointly defining a ring-shaped cavity; the first ring wall has a ring-shaped upper end surface, and at least partially has an inner step on an inner side wall adjacent to the ring-shaped upper end surface, the annular inner wall surface between the upper surface of the inner step and the ring-shaped upper end surface being a second annular surface; the ring-shaped top wall is placed on the upper surface of the inner step of the cover body, and a gap is formed between the two, the gap being in communication with the ring-shaped cavity; and the outer side edge of the ring-shaped top wall of the cover is spaced apart from the second annular surface of the cover body to form a fire outlet ring gap which is open upward and is in communication with the outside and the gap. Compared with the prior art, the present application is convenient to clean while not affecting the fire outlet.

Description

Technical Field

[0001] This invention belongs to the field of household stove technology, specifically relating to an outer ring burner cap and a burner. Background Technology

[0002] Existing stove burners typically consist of an open burner body and a cover that sits over the burner body. The burner body has flame outlet holes. During cooking, spilled liquid from the pot drips onto the cover and flows down to the burner body, blocking the flame outlet holes and potentially causing problems such as accidental flameout or poor ignition.

[0003] To overcome the defects of existing inner ring burner caps, the invention patent application CN201710447014.1, entitled "An Inner Ring Burner Cap for a Gas Burner" (publication number CN108006641A), discloses an inner ring burner cap comprising a cap body and a cover body. The periphery of the cover body protrudes horizontally from the cap body, and at least part of the bottom of the periphery extends downward to form a waterproof eave. When overflow flows to the periphery of the cover body, it can flow and drip down along the waterproof eave, thereby preventing the overflow from flowing into the flame outlet and preventing the flame from going out. However, the structure of the cover body in this application causes the overflow to flow randomly down the periphery of the cover body. The flowing overflow is easily affected by external factors and flows into the flame outlet, causing blockage of the flame outlet.

[0004] In the existing technology, in order to avoid clogging of the flame outlet, a thin brush can be used to unclog each flame outlet one by one, which is quite inconvenient. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an outer ring flame cap that is easy to clean and does not affect the flame output, in light of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide an outer ring flame cap that can stably transmit flame.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an outer ring flame cap, comprising:

[0008] The flame cap body has a vertically extending first annular wall;

[0009] The cover has an annular top wall and an inner annular wall extending downward from the inner edge of the annular top wall. The inner annular wall is located within the inner perimeter of the first annular wall, and the inner annular wall, together with the annular top wall and the first annular wall of the flame cover body, defines an annular cavity.

[0010] Its features are:

[0011] The first ring wall of the flame cap body has an annular upper end face, and at least partially has an inner step on the inner side wall adjacent to the annular upper end face. The annular inner wall surface between the upper surface of the inner step and the annular upper end face is called the second annular surface.

[0012] The annular top wall of the cover rests on the upper surface of the inner step of the flame cap body, forming a gap between them that connects to the annular cavity; and the outer edge of the annular top wall of the cover is spaced apart from the second annular surface of the flame cap body to form an upward-facing flame outlet annular slit that connects to the outside and the gap.

[0013] Thus, when cleaning is required, simply remove the cover and clean both the cover and the flame cap separately, making it easy to operate; when in use, simply place the ring-shaped top wall of the cover on the flame cap body to form a flame ring slit.

[0014] The aforementioned inner step can be directly formed on the upper end of the first annular wall of the flame cap body. The aforementioned gap can be an odd number, in which case the gap is a circumferentially extending ring; the gap can also be plural, in which case multiple gaps are arranged at intervals along the circumference.

[0015] Preferably, the first ring wall has a vertically extending annular body, protrusions extending inward from the inner side of the annular body and spaced apart in the circumferential direction to form the inner step, and the upper surfaces of each protrusion are on the same plane.

[0016] The annular top wall rests on each boss and forms the aforementioned gaps arranged circumferentially with the portion between two adjacent bosses.

[0017] To form the aforementioned gap, preferably, the lower surface of the annular top wall has a first annular plane extending inward from its outer edge, a first annular vertical surface extending downward from the inner edge of the first annular plane, a second annular plane extending inward from the lower edge of the first annular vertical surface, and a second annular vertical surface extending downward from the inner edge of the second annular plane. The second annular vertical surface is located within the inner perimeter of each boss, the second annular plane is supported on each boss, and the first annular plane is located above each boss and is spaced apart from the boss.

[0018] Preferably, the protrusion is semi-circular. This creates a funnel shape where the distance between two adjacent protrusions gradually decreases from the inside out, allowing airflow to be accelerated as it passes through.

[0019] In the above embodiments, preferably, the annular top wall is provided with a first flame-transfer groove that extends radially and penetrates its outer edge, and the outer port of the first flame-transfer groove is directly connected to the flame-outlet annular seam. In this way, the flame of the inner annular flame cap can be transmitted to the flame-outlet annular seam through the first flame-transfer groove.

[0020] Preferably, the first annular wall is provided with flame outlet holes that penetrate the wall thickness at intervals along the circumference. In this way, the flame cap at the flame outlet hole is located outside the flame at the flame outlet annular seam, and the combination of the two flames results in greater firepower and more uniform heating.

[0021] Preferably, the first annular wall is provided with a radially penetrating flame transmission channel, the inner port of which is opposite to the outer port of the first flame transmission groove. In this way, the flame of the inner annular flame cap can be transmitted to the flame outlet through the first flame transmission groove and the flame transmission channel in sequence.

[0022] Furthermore, the outer port of the first fire-transfer slot is opposite to the central region of the inner port of the fire-transfer channel.

[0023] Furthermore, the inner port of the fire transmission channel penetrates the second annular surface of the first annular wall and protrudes relative to the second annular surface; a notch is provided on the outer edge of the annular top wall corresponding to the position of the fire transmission channel, so that the inner port of the fire transmission channel can be inserted. In this way, fire can be transmitted while also being limited in the circumferential direction, preventing the cover from shifting circumferentially relative to the flame cap body during use.

[0024] To improve the stability of flame transmission, preferably, the edge of the inner port of the flame transmission channel is provided with a horizontally extending groove, and the two ends of the groove are respectively connected to the flame outlet annular seam and the flame transmission channel. In this way, even if the first flame transmission groove is blocked by overflowing liquid or other substances, the flame can still be transmitted to the flame outlet through the groove and the flame transmission channel.

[0025] Preferably, there are at least two grooves, which are distributed on both sides of the fire transmission channel.

[0026] More preferably, a second ignition groove is provided on the annular top wall at the position corresponding to the cut groove, extending radially and penetrating its outer edge, and the outer port of the second ignition groove is opposite to the groove opening of the corresponding cut groove.

[0027] Thus, the flame of the inner ring flame cap can be transmitted to the flame outlet ring seam through the second flame transmission groove, and then to the flame outlet hole through the cutting groove and flame transmission channel; or it can be transmitted to the flame outlet ring seam through the first flame transmission groove, and then to the flame outlet hole through the flame transmission channel.

[0028] Furthermore, an inverted U-shaped fire baffle is provided above the notch in the annular top wall, with both ends of the fire baffle supported on both sides of the notch. The fire baffle prevents the flame from spreading too high and also blocks overflow, preventing the overflow from clogging the flame-transmitting structure.

[0029] Furthermore, the annular top wall is provided with a third flame-transfer groove that extends radially and penetrates its outer edge, and the third flame-transfer groove is arranged opposite to the first flame-transfer groove in the circumferential direction. In this way, the inner ring flame can be transmitted to the flame-exit ring seam through the third flame-transfer groove, and then diffuse circumferentially to the flame-transfer channel.

[0030] Preferably, the fire outlet is inclined upwards from the inside out.

[0031] Preferably, the outer circumferential surface of the first annular wall is provided with a flame stabilizing groove that extends circumferentially and connects to each flame outlet.

[0032] In the above embodiments, preferably, the upper surface of the annular top wall is flush with the upper end surface of the annulus.

[0033] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a burner, characterized by having an outer ring flame cap as described above.

[0034] The burner is used in stoves.

[0035] Compared with the prior art, the advantages of the present invention are as follows: by designing the upper end of the first annular wall as having an annular upper end face and an inner step located inside the annular upper end face, and the annular inner wall surface between the upper surface of the inner step and the annular upper end face is the second annular surface, the annular top wall rests on the upper surface of the inner step, and the outer edge of the annular top wall is spaced apart from the second annular surface to form an upward-facing flame outlet annular slit that connects the outside world with the annular cavity, when cleaning is required, the cover can be removed and the cover and the flame cap body can be cleaned separately, which is convenient for operation; when it is needed for use, the annular top wall of the cover can be placed on the flame cap body to form the flame outlet annular slit. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the outer ring flame cap in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the outer ring fire cover from another perspective in an embodiment of the present invention;

[0038] Figure 3 This is a structural schematic diagram of the outer ring fire cover from another perspective in an embodiment of the present invention;

[0039] Figure 4 This is an exploded perspective view of the outer ring flame cap in an embodiment of the present invention;

[0040] Figure 5 This is a cross-sectional view of the outer ring fire cover in an embodiment of the present invention;

[0041] Figure 6 This is another cross-sectional view of the outer ring fire cover in an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the burner in an embodiment of the present invention. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] like Figures 1-7 As shown, this is a preferred embodiment of an outer ring flame cap and burner of the present invention, wherein the outer ring flame cap includes a flame cap body 1 and a cap body 2.

[0045] The flame cap body 1 has a vertically extending first annular wall 10, which has an annular upper end face 13. At least partially, an inner step 100 is formed on the inner wall adjacent to the annular upper end face 13. The annular inner wall surface between the upper surface 11 of the inner step and the annular upper end face 13 is designated as the second annular surface 12. In this embodiment, the first annular wall 10 has a vertically extending annular body 1a and protrusions 1b extending inward from the inner side of the annular body 1a and spaced circumferentially, forming the inner step 100. Each protrusion 1b is semi-circular, and the upper surface of each protrusion 1b is on the same plane, forming the upper surface 11 of the inner step 100. The upper end face of the annular body 1a forms the annular upper end face 13 of the first annular wall 10. Simultaneously, the first annular wall 10 is provided with flame outlet holes 101 penetrating the wall thickness at circumferential intervals. Each flame outlet hole 101 is inclined upward from the inside out. Furthermore, the outer circumferential surface of the first annular wall 10 is provided with a flame stabilizing groove 102 that extends circumferentially and connects to each flame outlet 101.

[0046] The aforementioned cover 2 has an annular top wall 21 and an inner annular wall 22 extending downward from the inner edge of the annular top wall 21. The inner annular wall 22 is located within the first annular wall 10. The inner annular wall 22, the annular top wall 21, and the first annular wall 10 of the flame cap body 1 together define an annular chamber 20. The annular top wall 21 rests on each protrusion 1b and forms gaps 201 arranged circumferentially and communicating with the annular chamber 20 between the portions between two adjacent protrusions 1b. The outer edge of the annular top wall 21 of the cover 2 is spaced apart from the second annular surface 12 of the flame cap body 1 to form an upward-facing flame outlet slit 202 that communicates with the outside and the gap 201. The upper surface of the annular top wall 21 is flush with the annular upper end surface 13. In this embodiment, to form the aforementioned gap 201, the lower surface of the annular top wall 21 has a first annular plane 211 extending inward from its outer edge, a first annular vertical surface 212 extending downward from the inner edge of the first annular plane 211, a second annular plane 213 extending inward from the lower edge of the first annular vertical surface 212, and a second annular vertical surface 214 extending downward from the inner edge of the second annular plane 213. The second annular vertical surface 214 is located within the inner perimeter of each boss 1b, the second annular plane 213 is supported on each boss 1b, and the first annular plane 211 is located above each boss 1b and is spaced apart from the boss 1b.

[0047] Meanwhile, the annular top wall 21 is provided with a first fire-transfer groove 215 extending radially and penetrating its outer edge, and the outer port of the first fire-transfer groove 215 is directly connected to the fire-emission ring slit 202. The first annular wall 10 is provided with a radially penetrating fire-transfer channel 14, and the central region of the inner port of the fire-transfer channel 14 is opposite to the outer port of the first fire-transfer groove 215. In this embodiment, the inner port of the fire-transfer channel 14 penetrates the second annular surface 12 of the first annular wall 10 and protrudes relative to the second annular surface 12; the outer edge of the annular top wall 21 is provided with a notch 216 corresponding to the position of the fire-transfer channel 14, so that the inner port of the fire-transfer channel 14 can be inserted. And an inverted U-shaped fire-blocking member 3 is provided above the notch 216 of the annular top wall 21, and the two ends of the fire-blocking member 3 are supported on both sides of the notch 216. Meanwhile, the inner edge of the fire transmission channel 14 is provided with two horizontally extending grooves 141, distributed on both sides of the fire transmission channel 14. The two ends of each groove 141 are connected to the fire outlet ring slit 202 and the fire transmission channel 14, respectively. A second fire transmission groove 217, extending radially and penetrating the outer edge of each groove 141, is provided on the annular top wall 21 at the corresponding position. The outer port of the second fire transmission groove 217 is opposite to the opening of the corresponding groove 141. In this embodiment, the two second fire transmission grooves 217 are arranged on both sides of the first fire transmission groove 215. Furthermore, a third fire transmission groove 218, extending radially and penetrating the outer edge of the annular top wall 21, is provided on the annular top wall 21. The third fire transmission groove 218 is arranged circumferentially opposite to the first fire transmission groove 215.

[0048] like Figure 7 As shown, the burner in this embodiment is used in a stove and includes a base 4, an inner ring burner cap 5, and the aforementioned outer ring burner cap. The base 4 has an inner ring mixing chamber and an outer ring mixing chamber located circumferentially around the inner ring mixing chamber. The inner ring burner cap 5 covers the inner ring mixing chamber, and the outer ring burner cap covers the outer ring mixing chamber. During operation, the flame on the inner ring burner cap 5 can be transmitted to the flame outlet seam 202 through each flame transmission groove, and can be transmitted to the flame outlet hole 101 of the outer ring through the flame transmission channel 14. Specifically, there are the following flame transmission paths:

[0049] Flame transmission path 1: The flame passes through the first flame transmission groove 215 and then through the flame transmission channel 14; when the first flame transmission groove 215 is blocked, the flame can be transmitted through the cutting groove 141.

[0050] Flame transmission path 2: The flame passes through the second flame transmission groove 217 and then enters the flame transmission channel 14 through the cutting groove 141.

[0051] Flame transmission path 3: The flame enters the flame outlet ring slit 202 through the third flame transmission groove 218 and extends circumferentially to the flame transmission channel 14.

[0052] In this invention, the cooperation between each fire-transfer groove and the fire-transfer channel can avoid the phenomenon of fire-transfer failure due to blockage of some fire-transfer grooves, and the structure of the fire-transfer groove and the fire-transfer channel is easy to clean.

[0053] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0054] The term "vertical" is also used in the specification and claims of this invention, meaning basically along the up and down direction, and is not limited to just the vertical direction, but can also be slightly deviated from the vertical direction.

Claims

1. An outer ring flame cap, comprising: The flame cap body (1) has a vertically extending first annular wall (10); The cover (2) has an annular top wall (21) and an inner annular wall (22) extending downward from the inner edge of the annular top wall (21). The inner annular wall (22) is located within the inner periphery of the first annular wall (10), and the inner annular wall (22), together with the annular top wall (21) and the first annular wall (10) of the fire cover body (1), defines an annular cavity (20). Its features are: The first annular wall (10) of the fire cap body (1) has an annular upper end face (13), and at least partially has an inner step (100) on the inner side wall adjacent to the annular upper end face (13). The annular inner wall surface between the upper surface (11) of the inner step and the annular upper end face (13) is called the second annular surface (12). The annular top wall (21) of the cover rests on the upper surface (11) of the inner step (100) of the flame cap body (1), and a gap (201) connecting the annular cavity (20) is formed between the two; and the outer edge of the annular top wall (21) of the cover is spaced opposite to the second annular surface (12) of the flame cap body (1) to form an upward-facing flame outlet annular slit (202) that connects the outside world and the gap (201); The first annular wall (10) has a vertically extending annular body (1a) and protrusions (1b) extending inward from the inner side of the annular body (1a) and spaced apart in the circumferential direction, forming the inner step (100), and the upper surfaces of each protrusion (1b) are on the same plane. The annular top wall (21) rests on each boss (1b) and forms the aforementioned gap (201) arranged circumferentially with the portion between two adjacent bosses (1b).

2. The outer ring flame cap according to claim 1, characterized in that: The lower surface of the annular top wall (21) has a first annular plane (211) extending inward from its outer edge, a first annular vertical surface (212) extending downward from the inner edge of the first annular plane (211), a second annular plane (213) extending inward from the lower edge of the first annular vertical surface (212), and a second annular vertical surface (214) extending downward from the inner edge of the second annular plane (213). The second annular vertical surface (214) is located within the inner perimeter of each boss (1b). The second annular plane (213) is supported on each boss (1b). The first annular plane (211) is located above each boss (1b) and is spaced apart from the boss (1b).

3. The outer ring flame cap according to claim 1, characterized in that: The boss (1b) is semi-circular.

4. The outer ring flame cap according to any one of claims 1 to 3, characterized in that: The annular top wall (21) is provided with a first fire transmission groove (215) that extends radially and penetrates its outer edge, and the outer port of the first fire transmission groove (215) is directly connected to the fire outlet annular seam (202).

5. The outer ring flame cap according to claim 4, characterized in that: The first annular wall (10) is provided with fire outlet holes (101) that penetrate the wall thickness at intervals along the circumference.

6. The outer ring flame cap according to claim 5, characterized in that: The first annular wall (10) is provided with a radially penetrating fire transmission channel (14), and the inner port of the fire transmission channel (14) is opposite to the outer port of the first fire transmission groove (215).

7. The outer ring flame cap according to claim 6, characterized in that: The outer port of the first fire transmission groove (215) is opposite to the central region of the inner port of the fire transmission channel (14).

8. The outer ring flame cap according to claim 7, characterized in that: The inner port of the fire transmission channel (14) penetrates the second annular surface (12) of the first annular wall (10) and protrudes relative to the second annular surface (12); the outer edge of the annular top wall (21) is provided with a notch (216) corresponding to the position of the fire transmission channel (14) so ​​that the inner port of the fire transmission channel (14) can be inserted.

9. The outer ring flame cap according to claim 8, characterized in that: The edge of the inner port of the fire transmission channel (14) is provided with a horizontally extending groove (141), and the two ends of the groove (141) are respectively connected to the fire outlet annular seam (202) and the fire transmission channel (14).

10. The outer ring flame cap according to claim 9, characterized in that: There are at least two grooves (141) and they are distributed on both sides of the fire transmission channel (14).

11. The outer ring flame cap according to claim 9, characterized in that: The annular top wall (21) is provided with a second fire-transfer groove (217) that extends radially and penetrates its outer edge at the position corresponding to the cut groove (141). The outer port of the second fire-transfer groove (217) is opposite to the groove opening of the corresponding cut groove (141).

12. The outer ring flame cap according to claim 8, characterized in that: An inverted U-shaped fire baffle (3) is provided above the notch (216) of the annular top wall (21), with the two ends of the fire baffle (3) supported on both sides of the notch (216).

13. The outer ring flame cap according to claim 4, characterized in that: The annular top wall (21) is provided with a third fire-transmitting groove (218) that extends radially and penetrates its outer edge. The third fire-transmitting groove (218) and the first fire-transmitting groove (215) are arranged opposite to each other in the circumferential direction.

14. The outer ring flame cap according to claim 5, characterized in that: The fire outlet (101) is inclined upward from the inside to the outside.

15. The outer ring flame cap according to claim 5, characterized in that: The outer circumferential surface of the first annular wall (10) is provided with a flame stabilizing groove (102) that extends circumferentially and connects to each flame outlet (101).

16. The outer ring flame cap according to any one of claims 1 to 3, characterized in that: The upper surface of the annular top wall (21) is flush with the upper annular end face (13).

17. A burner, characterized in that... It has an outer ring fire cap as described in any one of claims 1 to 16.

18. The burner according to claim 17, characterized in that: The burner is used in stoves.

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