A burner cap, burner and gas stove

Abstract

This utility model relates to the field of household appliance technology and discloses a burner cap, a burner, and a gas stove. The burner cap includes an inner ring, an outer ring, and a protrusion. The inner ring is located radially inside the outer ring. The protrusion connects the tops of the inner and outer rings and includes an inner and outer side. The outer ring includes a slope that gradually slopes upwards towards the protrusion and connects to the outer side. A first flame hole is formed on the slope, a second flame hole is formed on the outer side, and a third flame hole is formed on the inner side. The burner cap provided by this utility model reduces the radial distance between the first and second flame holes, thereby reducing the outer diameter of the burner cap and achieving cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a burner cap, a burner, and a gas stove. Background Technology

[0002] A gas stove is a widely used kitchen appliance. A gas stove typically includes a burner, which consists of a burner holder and a burner cap that is attached to the burner holder.

[0003] The prior art disclosed in CN118816204A discloses an outer flame cap and a burner. The outer flame cap includes multiple annular protrusions, including inner and outer protrusions. The outer protrusion is located radially outside the inner protrusion. The annular diameter of the inner protrusion is smaller than that of the outer protrusion. The outer flame cap has three rings of flame, with the flame outlets located on the outer circumferential surface of the outer protrusion, the inner side surface of the inner protrusion, and the outer side surface, respectively. Since the outer circumferential surface of the outer protrusion is cylindrical and there is a certain radial distance between the outer circumferential surface of the outer protrusion and the outer side surface of the inner protrusion, that is, there is a certain radial distance between two adjacent outer rings of flame, this leads to an increase in the width of the flame cap and an increase in cost.

[0004] Therefore, there is an urgent need to provide a burner cap, burner, and gas stove to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a burner cap, burner and gas stove that can solve the problem of high cost of burner caps.

[0006] This utility model is achieved through the following technical solution:

[0007] A flame cap includes an inner ring portion, an outer ring portion, and a protrusion portion. The inner ring portion is located radially inside the outer ring portion. The protrusion portion is connected between the top ends of the inner ring portion and the outer ring portion. The outer surface of the protrusion portion includes an inner side surface and an outer side surface. The outer surface of the outer ring portion includes a slope. The slope gradually slopes from bottom to top towards the protrusion portion and connects to the outer side surface. A first flame hole is formed on the slope surface. A second flame hole is formed on the outer side surface. A third flame hole is formed on the inner side surface.

[0008] As an optional solution, the angle between the inclined plane and the horizontal direction is 15° to 45°.

[0009] As an optional solution, the vertical height difference between the center of the first fire hole and the center of the second fire hole is 5mm to 15mm.

[0010] As an alternative, the first and second flame holes are staggered, and the second and third flame holes are staggered.

[0011] As an alternative, the inner side and the outer side are arranged at an angle, and the inner side and the outer side gradually approach each other from bottom to top.

[0012] As an alternative, the flame cap includes a flame outlet and a connector. The flame outlet is located radially inside the connector. The flame outlet is made of copper alloy and includes an inner ring, an outer ring, and a protrusion. The connector is made of stainless steel or cast iron.

[0013] As an alternative, the connector includes a vertical part and an inclined part connected together, the inclined part gradually tilting from bottom to top toward the flame outlet and cooperating with the flame outlet.

[0014] A burner includes a burner holder and the aforementioned burner, wherein the burner is fastened to the burner holder and forms a premixing chamber with the burner holder.

[0015] As an alternative, the flame cap base includes an inner ring wall and an outer ring wall located radially outside the inner ring wall. The flame cap includes a flame outlet and a connector. The flame outlet is located radially inside the connector. The connector is sleeved outside the outer ring wall. The flame outlet overlaps between the inner ring wall and the top of the connector.

[0016] A gas stove includes an energy-concentrating plate and the aforementioned burner, wherein the energy-concentrating plate is arranged around the outer periphery of the burner and forms a secondary air supply channel between itself and the burner cap.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model provides a burner cap, a burner, and a gas stove. The burner cap has three rings of flame holes, which can form three rings of flame to ensure complete combustion and achieve large-area uniform heating of the cookware. Furthermore, by setting an inclined surface on the outer ring and opening the first flame hole on the inclined surface, compared with the prior art where the outermost flame hole is opened on the outer circumference of a cylinder, this solution can reduce the radial distance between the first flame hole and the second flame hole, thereby reducing the outer diameter of the burner cap and thus achieving the purpose of reducing costs. Attached Figure Description

[0019] To more clearly and understandably illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of the flame cap provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the gas stove provided in this embodiment of the utility model;

[0022] Figure 3 This is a longitudinal sectional view of the gas stove provided in this embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 yes Figure 4 A magnified view of a section at point B.

[0025] In the picture:

[0026] 100. Burner;

[0027] 10. Flame cap; 1. Flame outlet; 11. Inner ring; 12. Outer ring; 121. Inclined surface; 1211. First flame hole; 122. Overlapping edge; 123. Flame stabilizing groove; 124. Flame stabilizing hole; 13. Protrusion; 131. Outer surface; 1311. Second flame hole; 132. Inner surface; 1321. Third flame hole; 2. Connector; 21. Vertical part; 22. Inclined part; 23. Groove; 231. Horizontal end face; 232. Vertical surface; 233. Gap; 20. Flame cap seat; 201. Inner ring wall; 202. Outer ring wall; 30. Premixing chamber; 40. Secondary air supply channel;

[0028] 200. Energy Concentrating Plate;

[0029] 300, Panel. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a burner cap 10, applied to the burner 100 of a gas stove. Specifically, in conjunction with... Figure 1 and Figure 4 The flame cap 10 includes an inner ring portion 11, an outer ring portion 12, and a protrusion 13. The inner ring portion 11 is located radially inside the outer ring portion 12. The protrusion 13 connects the top ends of the inner ring portion 11 and the outer ring portion 12. The outer surface of the protrusion 13 includes an inner side surface 132 and an outer side surface 131. The inner side surface 132 is the inner ring side surface of the protrusion 13, and the outer side surface 131 is the outer ring side surface of the protrusion 13. The outer surface of the outer ring portion 12 includes a slope 121. The slope 121 gradually slopes from bottom to top towards the protrusion 13 and connects to the outer side surface 131. A first flame hole 1211 is provided on the slope 121, a second flame hole 1311 is provided on the outer side surface 131, and a third flame hole 1321 is provided on the inner side surface 132.

[0035] In this embodiment, the burner cap 10 is provided with three rings of flame holes, which can form three rings of flame to ensure complete combustion and achieve large-area uniform heating of the cookware. Furthermore, by providing a slope 121 on the outer ring 12 and opening the first flame hole 1211 on the slope 121, compared with the prior art where the outermost flame hole is opened on the outer circumference of a cylinder, this solution can reduce the radial distance between the first flame hole 1211 and the second flame hole 1311, thereby reducing the outer diameter of the burner cap 10 and thus achieving the purpose of reducing costs.

[0036] Optionally, in this embodiment, the first flame hole 1211 and the second flame hole 1311 are each composed of multiple flame holes arranged at intervals along the circumference of the fire cover 10 and individually provided. The third flame hole 1321 is in the form of a flame hole group, that is, three independently provided flame holes form a flame hole group, and multiple flame hole groups are provided on the inner side 132 evenly arranged along its circumference. In another optional embodiment, each ring of flame holes can also be in the shape of a slit, which can also achieve large-area uniform heating of the cookware. No specific limitation is made here.

[0037] Optionally, the angle between the inclined surface 121 and the horizontal direction is 15° to 45°. For example, the angle between the inclined surface 121 and the horizontal direction can be 15°, 20°, 25°, 30°, 35°, or 45°. By setting the inclination angle of the inclined surface 121 within the above range, after opening the first flame hole 1211 on the inclined surface 121, the radial distance between the first flame hole 1211 and the second flame hole 1311 can be reduced, thereby reducing the outer diameter of the flame cap 10 and thus achieving the purpose of reducing costs.

[0038] Optionally, the vertical height difference between the center of the first flame hole 1211 and the center of the second flame hole 1311 is 5mm to 15mm. For example, the vertical height difference between the center of the first flame hole 1211 and the center of the second flame hole 1311 can be selected as 5mm, 7mm, 9mm, 11mm, 13mm, or 15mm, etc. By setting the vertical height difference between the center of the first flame hole 1211 and the center of the second flame hole 1311 within the above range, while ensuring that the radial distance between the first flame hole 1211 and the second flame hole 1311 is reduced, the vertical distance between the two adjacent outer ring flames can also be ensured, avoiding the vertical distance being too large or too small, thereby enabling large-area heating of the cookware.

[0039] Optionally, such as Figure 1 As shown, the first flame hole 1211 and the second flame hole 1311 are staggered, and the second flame hole 1311 and the third flame hole 1321 are staggered. This arrangement ensures uniform flame distribution, thereby guaranteeing even heating of the cookware over a wide area.

[0040] Optionally, the inner side 132 and the outer side 131 are arranged at an angle, and the inner side 132 and the outer side 131 gradually approach each other from bottom to top. This arrangement makes the protrusion 13 appear as a ridge, which helps to accelerate the flow of overflow from the top of the protrusion 13 to the bottom and reduces the amount of overflow entering the flame cap 10.

[0041] In the prior art, the flame cap 10 is usually made of copper or stainless steel. Copper flame caps are more expensive, while stainless steel flame caps are harder and more difficult to process. The processing depth of the flame holes is relatively shallow, which makes the flame cap 10 unstable in performance during combustion and prone to flame lift-off and flashback.

[0042] To address the aforementioned problems, in this embodiment, as follows: Figure 1 and Figure 4 As shown, the flame cap 10 includes a flame outlet 1 and a connecting member 2. The flame outlet 1 is located radially inside the connecting member 2. The flame outlet 1 is made of copper alloy and includes the aforementioned inner ring 11, outer ring 12, and protrusion 13. The connecting member 2 is made of stainless steel or cast iron. In this embodiment, the flame cap 10 is divided into two separate structures: the flame outlet 1 and the connecting member 2. The so-called separate structure means that the flame outlet 1 and the connecting member 2 are manufactured separately and can be assembled together. The flame outlet 1 is used to process the flame holes, so it is made of copper alloy. The easy machinability of copper alloy facilitates the processing of the flame holes, ensuring the processing depth of the flame holes, reducing the risk of flame lift-off and flashback, and ensuring stable combustion performance. The connecting member 2 has no flame holes and can be made of low-cost materials such as stainless steel or cast iron, thus reducing the manufacturing cost of the flame cap 10.

[0043] Optionally, the firing element 1 is made of a copper alloy. For example, the copper alloy can be a copper-lead alloy, a copper-zinc alloy, or a copper alloy with copper as the basic element and doped with materials such as tin, aluminum, or manganese. These copper alloys are common materials in the prior art and are not specifically limited here.

[0044] Optionally, the connector 2 can be made of stainless steel or cast iron. For example, the connector 2 can be made of materials such as 430 stainless steel, 316 stainless steel, or gray cast iron. These materials are common in the prior art and are not specifically limited here.

[0045] In an optional embodiment, such as Figure 4 As shown, the connector 2 includes a vertical portion 21 and an inclined portion 22 connected to each other. The inclined portion 22 gradually slopes from bottom to top towards the flame ejector 1 and engages with the flame ejector 1. By setting the connector 2 to an inwardly bent shape, the radial dimension of the flame ejector 1 can be reduced accordingly, thereby reducing manufacturing costs.

[0046] This embodiment also provides a burner 100 and a gas stove, such as Figure 2 and Figure 3 As shown, the burner 100 includes a burner cap seat 20 and the aforementioned burner cap 10. The burner cap 10 is fastened onto the burner cap seat 20 and forms a premixing chamber 30 with the burner cap seat 20. The first burner hole 1211, the second burner hole 1311, and the third burner hole 1321 are all connected to the premixing chamber 30. The gas stove includes a panel 300, an energy-concentrating plate 200, and the aforementioned burner 100. The burner 100 and the energy-concentrating plate 200 are both located on the panel 300. The energy-concentrating plate 200 is arranged around the outer periphery of the burner 100 and forms a secondary air supply channel 40 between itself and the burner cap 10. The energy-concentrating plate 200 is used to provide stable support for the cookware.

[0047] Injector air (i.e., primary air) and combustion gas enter the premixing chamber 30, mix thoroughly, and are then ejected from the first burner hole 1211, the second burner hole 1311, and the third burner hole 1321. This mixture is then ignited to form a flame, thereby heating the cookware. Secondary air can reach the burner cap 10 through the secondary air supply channel 40 between the burner cap 10 and the energy-concentrating plate 200, thus supplying secondary air to the burner cap 10 and ensuring complete combustion.

[0048] In the prior art, the burner cap 10 is usually made of copper. Copper burner cap has a high thermal conductivity and heats up quickly after ignition. High temperature affects the smooth flow of secondary air. Therefore, as the temperature rises, the resistance to secondary air entering from the replenishment channel gradually increases, and the replenishment of secondary air decreases accordingly. The carbon monoxide concentration in the flue gas of the system increases, which can easily affect the user's safety.

[0049] In this embodiment, such as Figure 4 As shown, connector 2 is opposite to the inner side of the energy-concentrating disk 200 and forms a secondary air supply channel 40. Connector 2 is made of stainless steel or cast iron. Utilizing the slow thermal conductivity of stainless steel or cast iron, it ensures smooth supply of secondary air through the secondary air supply channel 40 during the initial ignition stage, ensuring that the carbon monoxide concentration in the flue gas does not increase with the rise in system temperature, thus improving safety. In the middle and later stages, as the system temperature continues to rise, secondary air supply becomes limited. However, at this time, the system load will decrease significantly, the gas flow will decrease, and the required amount of secondary air will also decrease. Thus, even if the amount of secondary air supplied decreases, the demand for secondary air is also reduced. Therefore, the carbon monoxide concentration in the flue gas will always remain stable at a low level without significant fluctuations, ensuring user safety.

[0050] In this embodiment, as Figure 4 As shown, the flame cap base 20 includes an inner ring wall 201 and an outer ring wall 202 located radially outside the inner ring wall 201. The connector 2 is sleeved on the outer ring wall 202. The flame outlet 1 overlaps between the inner ring wall 201 and the top of the connector 2. Specifically, the inner ring portion 11 of the flame outlet 1 overlaps on the inner ring wall 201 of the flame cap base 20, and the outer ring portion 12 of the flame outlet 1 overlaps on the top of the connector 2. That is, the flame outlet 1 overlaps between the inner ring wall 201 and the connector 2 of the flame cap base 20 under the action of gravity, which makes assembly convenient and quick.

[0051] Optionally, such as Figure 3As shown, the inner diameter of the energy-concentrating disk 200 is D0, the outer diameter of the ignition outlet 1 is D1, and the outer diameter of the connector 2 is D2, where D1≤D0≤D2. This arrangement ensures that the vertical projection of the innermost edge of the energy-concentrating disk 200 lies on the connector 2, thus forming the air inlet of the secondary air supply channel 40 together with the connector 2. Since both the connector 2 and the energy-concentrating disk 200 experience relatively slow temperature rises, it ensures smooth replenishment of secondary air through the secondary air supply channel 40 during the initial ignition phase, preventing the carbon monoxide concentration in the flue gas from increasing with system temperature and improving operational safety.

[0052] In an optional embodiment, such as Figure 4 As shown, the minimum width of the secondary air replenishment channel 40 is H, where 5mm ≤ H ≤ 8mm. For example, H can be selected as 5mm, 6mm, 7mm, or 8mm, etc. The minimum width H of the secondary air replenishment channel 40 limits the amount of secondary air replenished. By limiting the minimum width H of the secondary air replenishment channel 40 within the above range, it can be ensured that the amount of secondary air replenished is sufficient to meet the usage requirements.

[0053] In an optional embodiment, such as Figure 5 As shown, the outer ring 12 has an overlapping edge 122 on its outer periphery, and the top of the connector 2 has a horizontal end face 231. The overlapping edge 122 is sealed and overlapped on the horizontal end face 231. By overlapping the overlapping edge 122 on the horizontal end face 231 under the action of gravity, an end face seal is formed between the overlapping edge 122 and the horizontal end face 231, ensuring that the gas does not leak from the mating position between the two as much as possible.

[0054] In an optional embodiment, such as Figure 5 As shown, an annular flame stabilizing groove 123 is provided on the outer periphery of the outer ring portion 12. The flame stabilizing groove 123 is located on the upper side of the overlapping edge 122 and is connected to the first flame hole 1211. The flame stabilizing groove 123 is located on the lower side of the first flame hole 1211 and is used to transport gas to generate a flame. It can heat the flame root of the first flame hole 1211 and form a stable annular auxiliary flame below the first flame hole 1211, thereby playing a role in stabilizing the flame. Furthermore, since the flame stabilizing groove 123 is located on the upper side of the end face seal, it can burn off the gas leaking from the sealing position in the event of end face seal failure, preventing gas leakage from causing danger.

[0055] In an optional embodiment, such as Figure 5As shown, multiple spaced flame-stabilizing holes 124 are also provided along the circumference of the outer ring portion 12. The flame-stabilizing holes 124 connect the flame-stabilizing groove 123 and the premixing chamber 30. In this way, the flame-stabilizing holes 124 can transport the gas in the premixing chamber 30 to the flame-stabilizing groove 123, ensuring that the gas in the flame-stabilizing groove 123 is sufficient. The flame-stabilizing groove 123 can form a ring-shaped flame through the gas transported by the multiple flame-stabilizing holes 124, ensuring that the flame is continuous and uniform, thereby playing a role in flame stabilization.

[0056] In an optional embodiment, such as Figure 5 As shown, the connector 2 has a groove 23 at one end near the flame outlet 1. The groove 23 includes a vertical surface 232 and the aforementioned horizontal end surface 231. The overlapping edge 122 overlaps the horizontal end surface 231 and has a gap 233 between it and the vertical surface 232. That is, the vertical surface 232 and the horizontal end surface 231 are the two groove surfaces of the groove 23. During assembly, the bottom of the overlapping edge 122 overlaps the horizontal end surface 231, and a certain gap 233 is maintained between the periphery of the overlapping edge 122 and the vertical surface 232. When the seal between the overlapping edge 122 and the horizontal end surface 231 fails, the leaked gas can flow vertically upward along the gap 233, thereby ensuring that as much of the leaked gas as possible is burned off by the flame of the flame stabilizing groove 123, preventing the gas leak from causing danger.

[0057] In an optional embodiment, such as Figure 4 As shown, the connector 2 can be directly fitted onto the outer ring wall 202 of the flame cap base 20 under the action of gravity and overlap the bottom of the flame cap base 20, making assembly convenient and quick. In another optional embodiment, the connector 2 can also be fixedly connected to the outer ring wall 202 of the flame cap base 20, for example, by riveting, which provides higher reliability.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fire cover characterized in that, The device includes an inner ring (11), an outer ring (12), and a protrusion (13). The inner ring (11) is located radially inside the outer ring (12). The protrusion (13) is connected between the top ends of the inner ring (11) and the outer ring (12). The outer surface of the protrusion (13) includes an inner side (132) and an outer side (131). The outer surface of the outer ring (12) includes a slope (121). The slope (121) gradually slopes from bottom to top towards the protrusion (13) and is connected to the outer side (131). A first fire hole (1211) is provided on the slope (121), a second fire hole (1311) is provided on the outer side (131), and a third fire hole (1321) is provided on the inner side (132).

2. The flame cap according to claim 1, characterized in that, The angle between the inclined plane (121) and the horizontal direction is 15° to 45°.

3. The flame cap according to claim 1, characterized in that, The vertical height difference between the center of the first fire hole (1211) and the center of the second fire hole (1311) is 5mm to 15mm.

4. The flame cap according to claim 1, characterized in that, The first flame hole (1211) and the second flame hole (1311) are arranged alternately, and the second flame hole (1311) and the third flame hole (1321) are arranged alternately.

5. The flame cap according to claim 1, characterized in that, The inner side (132) and the outer side (131) are arranged at an angle, and the inner side (132) and the outer side (131) gradually approach each other from bottom to top.

6. The flame cap according to claim 1, characterized in that, The flame cap includes a flame outlet (1) and a connector (2). The flame outlet (1) is located radially inside the connector (2). The flame outlet (1) is a copper alloy and includes an inner ring (11), an outer ring (12), and a protrusion (13). The connector (2) is a stainless steel or cast iron component.

7. The flame cap according to claim 6, characterized in that, The connector (2) includes a vertical part (21) and an inclined part (22) connected to each other. The inclined part (22) gradually tilts from bottom to top toward the flame outlet (1) and cooperates with the flame outlet (1).

8. A burner, characterized in that, Includes a flame cap holder (20) and a flame cap as described in any one of claims 1 to 7, wherein the flame cap is fastened to the flame cap holder (20) and forms a premixing cavity (30) with the flame cap holder (20).

9. The burner according to claim 8, characterized in that, The flame cap base (20) includes an inner ring wall (201) and an outer ring wall (202) located radially outside the inner ring wall (201). The flame cap includes a flame outlet (1) and a connector (2). The flame outlet (1) is located radially inside the connector (2). The connector (2) is sleeved outside the outer ring wall (202). The flame outlet (1) overlaps between the top of the inner ring wall (201) and the top of the connector (2).

10. A gas stove, characterized in that, It includes an energy-concentrating disc (200) and a burner as described in claim 8 or 9, wherein the energy-concentrating disc (200) is arranged around the outer periphery of the burner and forms a secondary air supply channel (40) between itself and the burner cap.

Images