Inner ring fire cover, combustor and gas stove
By setting up the discharge angle and ignition air holes on the inner ring fire cover of the gas stove, the stabilization of the arc release path is ensured, the existing gas stove ignition the problem of low power, and the higher ignition power is achieved.
Patent Information
- Application Number
- CN202421129359.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The arc path of existing gas stoves is prone to deviations when ignition, resulting in a low ignition success rate.
A type of internal ring fire cover, including discharge angle and ignition stomatology, the ignition path formed between the electrode pins and the discharge angle is located within the coverage of the flammable gas to ensure that the arc release path is more stable.
Through this design, the arc release path is more stable, which improves the power of ignition.
Smart Images
Figure CN222417451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stoves, in particular to an inner ring fire cover, a burner and a gas stove. Background Art
[0002] A gas stove is a device that can generate heat by burning combustible gases such as natural gas. This heat can be used to heat the ingredients in the cooker to complete the cooking.
[0003] The existing gas stove mainly includes a stove head, an inner ring fire cover and an electrode needle. The combustible gas can reach the inner ring fire cover through the stove head. The inner ring fire cover is provided with a through hole, and the combustible gas can be sprayed out from the through hole. The electrode needle can generate an electric arc to ignite the combustible gas sprayed from the through hole, thereby causing the combustible gas to burn.
[0004] The defects of existing gas stoves include: the direction of the arc generated by the electrode needle will deviate a little each time, and the path of the combustible gas spraying out from the through hole of the inner ring fire cover is difficult to achieve the theoretical route, so the arc generated by the electrode needle may miss the combustible gas, resulting in a high probability of ignition failure. Utility Model Content
[0005] The utility model aims to provide an inner ring fire cover, a burner and a gas stove, which solve the problem that the arc path is prone to deviation during ignition of the existing gas stove and have a high ignition success rate.
[0006] To achieve this purpose, on the one hand, the utility model adopts the following technical solutions:
[0007] The inner ring fire cover comprises an inner ring fire cover shell, a through hole is opened on the inner ring fire cover shell, and a discharge angle and an ignition hole are also arranged on the inner ring fire cover shell. The discharge angle protrudes from the outer wall surface of the inner ring fire cover shell, and the ignition hole is used to allow combustible gas to flow out of the inner ring fire cover shell.
[0008] In one preferred embodiment, the ignition hole is located below the discharge angle.
[0009] In one of the preferred embodiments, a discharge angle outlet hole is provided on the inner ring fire cover shell, and the sheet-shaped discharge angle is arranged on the outside of the discharge angle outlet hole so that the combustible gas flowing out of the discharge angle outlet hole can meet the combustible gas flowing out of the ignition gas hole to form a gas mixing zone Z.
[0010] In one preferred embodiment, the discharge angle is inclined radially outward in a direction from the discharge angle outlet hole to the ignition air hole.
[0011] In one of the preferred embodiments, the discharge angle is a columnar body fixedly connected to the outer wall surface of the inner ring fire cover shell.
[0012] In one of the preferred embodiments, the through holes opened on the inner ring fire cover shell include at least two main fire holes and at least two flame stabilizing holes, and the main fire holes and the flame stabilizing holes are arranged at intervals.
[0013] On the other hand, the utility model adopts the following technical solutions:
[0014] The burner comprises an electrode needle and the inner ring fire cover mentioned above, wherein an ignition path S formed between the discharge head and the discharge angle of the electrode needle is located within the coverage range of the combustible gas flowing out of the ignition gas hole.
[0015] In one of the preferred embodiments, the burner also includes a guide ring, which is inserted into the inner ring fire cover shell body, and the top edge of the guide ring is spaced apart from the inner wall of the top surface of the inner ring fire cover shell body, and an inner ring fire gas channel is formed between the outer circumferential surface of the guide ring and the inner circumferential surface of the inner ring fire cover shell body, and the combustible gas can reach the inner wall of the top surface of the inner ring fire cover shell body after passing through the top surface opening of the guide ring, and then enter the inner ring fire gas channel.
[0016] In one of the preferred embodiments, along the flow direction of the combustible gas in the guide ring, the cross-sectional area of the guide ring gradually decreases.
[0017] On the other hand, the utility model adopts the following technical solutions:
[0018] A gas stove comprising the above-mentioned burner.
[0019] The inner ring fire cover disclosed by the utility model is provided with a discharge angle and an ignition air hole, an ignition path is formed between the discharge head of the electrode needle and the discharge angle, during ignition, the electrode needle releases a high-voltage arc along the ignition path, the high-voltage arc can ignite the combustible gas flowing out of the ignition air hole, the arc release path is more stable, and the ignition success rate is improved.
[0020] The burner disclosed in the utility model comprises the inner ring fire cover mentioned above, and the gas stove disclosed in the utility model comprises the burner mentioned above, the arc release path is more stable, and the ignition success rate is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of a burner provided in a specific embodiment of the utility model;
[0022] Figure 2 It is an exploded diagram of a burner provided in a specific embodiment of the utility model;
[0023] Figure 3 It is a cross-sectional view of a burner provided in a specific embodiment of the utility model;
[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle A;
[0025] Figure 5 It is a structural schematic diagram of an inner ring fire cover provided by a specific embodiment of the utility model;
[0026] Figure 6 It is a cross-sectional view of an inner ring fire cover provided by a specific embodiment of the utility model;
[0027] Figure 7 It is a structural schematic diagram of another inner ring fire cover provided by a specific embodiment of the utility model;
[0028] Figure 8 It is a cross-sectional view of another inner ring fire cover provided by a specific embodiment of the utility model.
[0029] In the figure:
[0030] 1. Inner ring fire cover; 2. Electrode needle; 3. Guide ring; 4. Cooker head; 5. Inner ring fire gas channel; 11. Inner ring fire cover shell; 12. Discharge angle; 13. Ignition air hole; 14. Discharge angle air outlet hole; 15. Main fire hole; 16. Flame stabilizing hole; 21. Discharge head. DETAILED DESCRIPTION
[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation methods disclosed below.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0037] This embodiment discloses an inner ring fire cover, a burner including the inner ring fire cover, and a gas stove including the burner. Figure 1 and Figure 2 As shown, the burner includes an inner ring fire cover 1, an electrode needle 2, a guide ring 3 and a stove head 4. The inner ring fire cover 1, the electrode needle 2 and the guide ring 3 are respectively arranged on the stove head 4, and the inner ring fire cover 1 is covered on the outside of the guide ring 3.
[0038] like Figures 5 to 8As shown, the inner ring fire cover 1 includes an inner ring fire cover shell 11, and a discharge angle 12 and an ignition air hole 13 are also provided on the inner ring fire cover shell 11. The discharge angle 12 protrudes from the outer wall surface of the inner ring fire cover shell 11, and the ignition air hole 13 connects the inner and outer sides of the inner ring fire cover shell 11 to allow the combustible gas to pass through. In this embodiment, the ignition air hole 13 is located below the discharge angle 12.
[0039] like Figure 3 and Figure 4 As shown, an ignition path S is formed between the discharge head 21 of the electrode needle 2 and the discharge angle 12 of the inner ring ignition cover 1, and the ignition path S passes through the coverage of the combustible gas flowing out of the ignition hole 13. During ignition, the electrode needle 2 releases a high-voltage arc along the ignition path S, and the high-voltage arc can ignite the combustible gas flowing out of the ignition hole 13. The arc release path is more stable, which improves the ignition success rate.
[0040] On the basis of the above structure, the top edge of the guide ring 3 is spaced from the top inner wall of the inner ring fire cover shell 11. The specific spacing distance between the top edge of the guide ring 3 and the top inner wall of the inner ring fire cover shell 11 is not limited, as long as it allows the combustible gas to flow. In this embodiment, the distance value B between the top edge of the guide ring 3 and the top inner wall of the inner ring fire cover shell 11 is 2mm to 7mm, preferably 4mm.
[0041] An inner ring fire gas channel 5 is formed between the outer circumference of the guide ring 3 and the inner circumference of the inner ring fire cover shell 11. Figure 3 As shown by the straight line with arrows, the combustible gas passes through the top opening of the guide ring 3 and hits the top inner wall of the inner ring fire cover shell 11, and then turns to enter the inner ring fire gas channel 5. The impact and turning process reduces the kinetic energy of the mixed gas of the combustible gas and air, reduces the speed of the mixed gas when it flows out of the inner ring fire cover shell 11, and avoids flame separation.
[0042] In order to accelerate the mixed gas composed of combustible gas and air to hit the inner wall of the top surface of the inner ring fire cover shell 11, the guide ring 3 is designed to be a contracted bell-mouth shape. Specifically, along the flow direction of the combustible gas in the guide ring 3, the cross-sectional area of the guide ring 3 gradually decreases. The air flow velocity at the top edge of the guide ring 3 is increased, and the mixed gas of combustible gas and air hits the inner wall of the top surface of the inner ring fire cover shell 11 more violently, so that the combustible gas and air can be mixed more evenly.
[0043] The upper part of the inner ring fire cover 1 is also in a contracted bell-mouth shape, but its contraction degree is not as good as that of the guide ring 3. That is, along the flow direction of the combustible gas in the guide ring 3, the distance between the outer peripheral surface of the guide ring 3 and the inner peripheral surface of the inner ring fire cover shell 11 gradually increases. Figure 3 As shown, an angle C is formed between the outer circumference of the guide ring 3 and the inner circumference of the inner ring fire cover shell 11, and the value range of the angle C is between 0° and 30°, preferably 7°.
[0044] At this time, the inner ring fire gas channel 5 located between the outer circumference of the guide ring 3 and the inner circumference of the inner ring fire cover shell 11 is a structure with a large upper part and a small lower part. The combustible gas flows out of the guide ring 3 and enters the inner ring fire gas channel 5 and is contracted and pressurized. The inner ring fire cover shell 11 is provided with two rows of through holes for releasing the combustible gas. The contraction and pressurization of the inner ring fire gas channel 5 can make the outlet pressure of the two rows of through holes the same, maintaining the stability of the upper and lower rows of flames.
[0045] The specific shape of the upper and lower rows of through holes is not limited, as long as they can connect the inner and outer sides of the inner ring fire cover shell 11 to allow the combustible gas to flow out. Figures 5 to 8 As shown, the through holes opened on the inner ring fire cover shell 11 include at least two main fire holes 15 and at least two flame stabilizing holes 16. The main fire holes 15 and the flame stabilizing holes 16 are arranged at intervals, and the main fire holes 15 in the upper row are arranged correspondingly to the flame stabilizing holes 16 in the lower row, so that the flame is more stable and the combustion is more complete. Figure 5 and Figure 6 As shown, the main flame hole 15 is a round hole, and the flame stabilizing hole 16 is an elongated hole, so that the combustible gas is more evenly distributed between the upper and lower rows, and the flame is more stable. Figure 7 and Figure 8 As shown, it is also feasible that both the main fire hole 15 and the flame stabilizing hole 16 are circular, as long as the combustible gas can be evenly distributed.
[0046] The specific shape and processing method of the discharge corner 12 are not limited, as long as an ignition path S can be formed between the discharge head 21 and the discharge corner 12. In one structure, Figure 5 and Figure 6 As shown, the inner ring fire cover shell 11 is provided with a discharge angle outlet hole 14, and the sheet-shaped discharge angle 12 is arranged outside the discharge angle outlet hole 14. Figure 3 and Figure 4 As shown, the combustible gas flowing out of the discharge angle outlet 14 can meet the combustible gas flowing out of the ignition gas hole 13 to form a gas mixing zone Z. It can be understood that when the discharge angle outlet 14 is not provided, the gas mixing zone Z is the range covered by the combustible gas flowing out of the ignition gas hole 13; after the discharge angle outlet 14 is provided, the combustible gas flowing out of the ignition gas hole 13 will deviate to a certain extent, and the gas mixing zone Z will be formed after the deviation. During ignition, the electrode needle 2 releases a high-voltage arc along the ignition path S, and the high-voltage arc can ignite the combustible gas in the gas mixing zone Z, thereby improving the ignition success rate.
[0047] In order to allow the combustible gas flowing out of the discharge corner outlet 14 to meet the combustible gas flowing out of the ignition outlet 13, it is necessary to make the flow directions of these two combustible gases different. Figure 5 and Figure 6As shown, the discharge angle 12 is inclined radially outward from the discharge angle outlet hole 14 to the ignition gas hole 13. That is, the discharge angle 12 is inclined toward the ignition gas hole 13, so that the combustible gas flowing out of the discharge angle outlet hole 14 is ejected toward the ignition gas hole 13.
[0048] In this embodiment, the discharge corner 12 is a thin sheet structure that is folded outward when processing the discharge corner outlet hole 14. It is easy to process and does not require additional structures on the inner ring fire cover shell 11, so the processing cost is low. In order to make it easier to align the discharge head 21 and the discharge corner 12 to form the ignition path S, in this embodiment, the discharge corner 12 is a rectangular thin sheet structure, and accordingly, the discharge corner outlet hole 14 is also a rectangular through hole. Within the same length and width (circular diameter, rectangular side length), the area of the rectangle is larger than the area of the circular sheet structure. When the discharge head 21 has a slight deviation due to problems such as processing accuracy and installation accuracy, the discharge head 21 can also form an ignition path S with the discharge corner 12 because of the rectangular discharge corner 12.
[0049] In another structure, Figure 7 and Figure 8 As shown, the discharge angle 12 is a columnar body fixedly connected to the outer wall of the inner ring fire cover shell 11, and the inner ring fire cover shell 11 will not be deformed due to machining the discharge angle 12. In order to improve stability, the discharge angle 12 is welded or riveted to the outer wall of the inner ring fire cover shell 11, and the machining process is mature.
[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, but may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. An inner ring fire cover, comprising an inner ring fire cover shell (11), wherein the inner ring fire cover shell (11) is provided with a through hole, characterized in that: The inner ring fire cover shell (11) is also provided with a discharge angle (12) and an ignition air hole (13); the discharge angle (12) protrudes from the outer wall surface of the inner ring fire cover shell (11); and the ignition air hole (13) is used to allow combustible gas to flow out of the inner ring fire cover shell (11).
2. The inner ring fire cover according to claim 1, characterized in that: The ignition air hole (13) is located below the discharge angle (12).
3. The inner ring fire cover according to claim 1, characterized in that: The inner ring fire cover shell (11) is provided with a discharge angle outlet hole (14), and the sheet-shaped discharge angle (12) is arranged on the outer side of the discharge angle outlet hole (14) so that the combustible gas flowing out of the discharge angle outlet hole (14) can meet the combustible gas flowing out of the ignition hole (13) to form a gas mixing zone Z.
4. The inner ring fire cover according to claim 3, characterized in that: In a direction from the discharge angle air outlet hole (14) to the ignition air hole (13), the discharge angle (12) is inclined radially outward.
5. The inner ring fire cover according to claim 1, characterized in that: The discharge angle (12) is a columnar body fixedly connected to the outer wall surface of the inner ring fire cover shell (11).
6. The inner ring fire cover according to any one of claims 1 to 5, characterized in that: The through holes opened on the inner ring fire cover shell (11) include at least two main fire holes (15) and at least two flame stabilizing holes (16), and the main fire holes (15) and the flame stabilizing holes (16) are arranged at intervals.
7. A burner comprising an electrode needle (2), characterized in that It also comprises an inner ring fire cover (1) as claimed in any one of claims 1 to 6, wherein an ignition path S formed between the discharge head (21) of the electrode needle (2) and the discharge angle (12) is located within the coverage range of the combustible gas flowing out of the ignition hole (13).
8. The burner according to claim 7, characterized in that The burner also includes a guide ring (3), which is inserted into the inner ring fire cover shell (11), and the top edge of the guide ring (3) is spaced apart from the inner wall of the top surface of the inner ring fire cover shell (11). An inner ring fire gas channel (5) is formed between the outer peripheral surface of the guide ring (3) and the inner peripheral surface of the inner ring fire cover shell (11). After passing through the top surface opening of the guide ring (3), the combustible gas can reach the inner wall of the top surface of the inner ring fire cover shell (11), and then enter the inner ring fire gas channel (5).
9. The burner according to claim 8, characterized in that Along the flow direction of the combustible gas in the guide ring (3), the cross-sectional area of the guide ring (3) gradually decreases.
10. A gas stove, characterized in that: Comprising a burner as claimed in any one of claims 7 to 9.