A gas stove

Abstract

The utility model relates to domestic appliance technical field discloses a gas -cooker. The gas -cooker includes burner and energy -gathering dish, and energy -gathering dish ring is located at the outer periphery of burner, and burner includes fire lid and fire lid seat, and fire lid is buckled on fire lid seat and forms premixing chamber with fire lid seat, and fire lid includes the fire -out piece and connecting piece that set up the circumference of fire lid seat, and fire -out piece is located at the radial inboard of connecting piece, and fire -out piece is copper alloy spare and is set up with the fire hole, and the heat conductivity coefficient of connecting piece is below 55W (m K), and connecting piece and energy -gathering dish form secondary air supplement channel between. The gas -cooker provided by the utility model can not only guarantee the smooth supplement of secondary air in the initial stage of ignition, guarantee the flue gas stability, but also can guarantee the processing depth of fire hole, reduce the risk of flame backfire.

Description

Technical Field

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

[0002] Gas stoves are a widely used kitchen appliance. Gas stoves typically consist of a concentrator and a burner. The concentrator is arranged around the outer periphery of the burner, and the burner includes a burner holder and a burner cap that is fastened to the burner holder. A secondary air supply channel is formed between the burner cap and the concentrator.

[0003] In existing technologies, burner caps are typically made of copper or stainless steel. Firstly, copper burner caps have high thermal conductivity, resulting in rapid temperature rise after ignition. This high temperature affects the smooth flow of secondary air; therefore, as the temperature rises, the resistance to secondary air entering through the replenishment channel gradually increases, leading to a reduction in secondary air supply. This results in an increase in the carbon monoxide concentration in the system flue gas, potentially affecting user safety. Secondly, stainless steel burner caps have low thermal conductivity, resulting in slow heat transfer and stable flue gas flow. However, stainless steel is hard and difficult to process, and the depth of the burner holes is relatively shallow, causing the burner cap's performance to be unstable during combustion and prone to flame lift-off and flashback.

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

[0005] The purpose of this utility model is to provide a gas stove that can ensure the smooth supply of secondary air in the initial stage of ignition, ensure stable flue gas, and ensure the processing depth of the burner holes to reduce the risk of flame backfire.

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

[0007] A gas stove includes a burner and an energy-concentrating plate, the energy-concentrating plate being arranged around the outer periphery of the burner, the burner including a flame cap and a flame cap seat, the flame cap being fastened to the flame cap seat and forming a premixing chamber with the flame cap seat;

[0008] The flame cover includes a flame outlet and a connector arranged circumferentially around the flame cover seat. The flame outlet is located radially inside the connector. The flame outlet is made of copper alloy and has flame holes. The thermal conductivity of the connector is less than 55 W / (m·K). A secondary air supply channel is formed between the connector and the energy-concentrating disk.

[0009] As an alternative, the connector can be made of stainless steel or cast iron.

[0010] As an optional solution, the inner diameter of the energy-concentrating disk is D0, the outer diameter of the flame-emitting component is D1, and the outer diameter of the connecting component is D2, wherein D1≤D0≤D2.

[0011] As an optional solution, the minimum width of the secondary air replenishment channel is H, where 5mm ≤ H ≤ 8mm.

[0012] As an alternative, the flame cap seat includes an inner ring wall and an outer ring wall located radially outside the inner ring wall, the connector is sleeved outside the outer ring wall, and the flame outlet overlaps between the inner ring wall and the top of the connector.

[0013] As an optional solution, the flame-emitting component includes an inner ring portion and an outer ring portion. The inner ring portion overlaps the inner ring wall, and the outer circumference of the outer ring portion is provided with an overlapping edge. The top of the connector is provided with a horizontal end face, and the overlapping edge is sealed and overlapped with the horizontal end face.

[0014] As an alternative, an annular flame stabilizing groove is provided on the outer periphery of the outer ring portion. The flame stabilizing groove is located on the upper side of the overlapping edge and is connected to the flame hole.

[0015] As an optional solution, the outer ring portion is further provided with a plurality of spaced flame stabilizing holes along its circumference, the flame stabilizing holes connecting the flame stabilizing groove and the premixing chamber.

[0016] As an alternative, the connector has a groove at one end near the flame outlet, the groove including a vertical surface and a horizontal end surface, the overlapping edge overlapping the horizontal end surface and having a gap between it and the vertical surface.

[0017] As an alternative, the connector includes a vertical part and an inclined part connected together. The vertical part is sleeved on the outside of the flame cover seat, and the inclined part gradually tilts from bottom to top toward the flame outlet and cooperates with the flame outlet.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model provides a gas stove that separates the burner cap into two parts: a flame outlet and a connector. The flame outlet is made of copper alloy, while the connector, which faces the inner side of the energy-concentrating plate, is made of a low-thermal-conductivity material with a thermal conductivity below 55 W / (m·K). Firstly, the flame outlet is used to machine the flame holes. The ease of machining copper alloy facilitates the machining of these holes, ensuring sufficient depth, reducing the risk of flame lift-off and ensuring stable combustion performance. Secondly, the connector, facing the inner side of the energy-concentrating plate, forms a secondary air supply channel. Utilizing the slow heat conduction characteristic of the low-thermal-conductivity material, it ensures smooth secondary air supply during the initial ignition phase, preventing the carbon monoxide concentration in the flue gas from increasing with system temperature and improving safety. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the structure of the gas stove provided in this embodiment of the utility model;

[0022] Figure 2 This is a longitudinal sectional view of the gas stove provided in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the flame cap provided in an embodiment of this utility model;

[0024] Figure 4 yes Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 5 yes Figure 4 A magnified view of a section at point B.

[0026] In the picture:

[0027] 100. Burner;

[0028] 10. Flame cap; 1. Flame outlet; 11. Inner ring; 12. Outer ring; 121. Overlapping edge; 122. Flame stabilizing groove; 123. Flame stabilizing hole; 13. Flame hole; 2. Connecting piece; 21. Vertical part; 22. Inclined part; 23. Groove; 231. Horizontal end face; 232. Vertical face; 233. Gap; 20. Flame cap seat; 201. Inner ring wall; 202. Outer ring wall; 30. Premixing chamber; 40. Secondary air supply channel;

[0029] 200. Energy Concentration Plate;

[0030] 300, Panel. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] like Figure 1 As shown, this embodiment provides a gas stove, including a burner 100, an energy-concentrating plate 200, and a panel 300. Both the burner 100 and the energy-concentrating plate 200 are located on the panel 300. The burner 100 is used to heat cookware, and the energy-concentrating plate 200 is arranged around the outer periphery of the burner 100 and is used to provide stable support for the cookware. Figure 2 and Figure 3 As shown, the burner 100 includes a burner cap 10 and a burner cap seat 20. The burner cap 10 is fastened to the burner cap seat 20 and forms a premixing chamber 30 with the burner cap seat 20. The burner cap 10 has a flame hole 13, which communicates with the premixing chamber 30. A secondary air supply channel 40 is formed between the burner cap 10 and the energy-concentrating disk 200 for supplying secondary air.

[0036] Injector air (i.e., primary air) and fuel gas enter the premixing chamber 30, mix thoroughly, and are then ejected from the burner hole 13. They are 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, thereby supplying secondary air to the burner cap 10 and ensuring complete combustion.

[0037] In existing technologies, the burner cap 10 is typically made of copper or stainless steel. Firstly, copper burner caps have high thermal conductivity, resulting in rapid temperature rise after ignition. This high temperature affects the smooth flow of secondary air; therefore, as the temperature rises, the resistance to secondary air entering through the secondary air supply channel 40 gradually increases, leading to a reduction in secondary air supply and an increase in carbon monoxide concentration in the system flue gas, potentially affecting user safety. Secondly, stainless steel burner caps have low thermal conductivity, resulting in slow heat transfer and stable flue gas flow. However, stainless steel is hard and difficult to process, and the processing depth of the flame holes 13 is relatively shallow, causing the burner cap 10 to exhibit unstable performance during combustion and making it prone to flame lift-off and flashback.

[0038] To address the aforementioned problems, in this embodiment, as follows: Figure 2 and Figure 3 As shown, the flame cap 10 includes a flame outlet 1 and a connector 2 that are separately arranged around the flame cap base 20. The flame outlet 1 is located on the radial inner side of the connector 2. The flame outlet 1 is made of copper alloy and has flame holes 13. The thermal conductivity of the connector 2 is less than 55 W / (m·K). A secondary air replenishment channel 40 is formed between the connector 2 and the energy-concentrating disk 200.

[0039] In this embodiment, the flame cover 10 is divided into two separate structures: a flame outlet component 1 and a connecting component 2. The term "separate structure" means that the flame outlet component 1 and the connecting component 2 are manufactured separately but can be assembled together. The flame outlet component 1 is made of copper alloy, while the connecting component 2, which is opposite to the inner side of the energy-concentrating disk 200, is made of a material with a low thermal conductivity of less than 55 W / (m·K). On one hand, the flame outlet component 1 is used to process the flame holes 13. Utilizing the easy machinability of copper alloy, the processing of the flame holes 13 is convenient, ensuring the processing depth of the flame holes 13, reducing the risk of flame detachment and flashback, and ensuring stable combustion performance. On the other hand, the connector 2 is used to form a secondary air supply channel 40 opposite to the inner side of the energy-concentrating disk 200. Utilizing the characteristic of low thermal conductivity material with slow heat conduction, it ensures that secondary air is smoothly supplied through the secondary air supply channel 40 in the early stage of ignition, ensuring that the carbon monoxide concentration in the flue gas does not increase with the increase of system temperature, thus improving the safety of use. In the middle and later stages, as the system temperature continues to rise, the secondary air supply is 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. In this way, 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 be maintained at a low level without large fluctuations, ensuring the safety of users.

[0040] In some embodiments, such as Figure 3 As shown, three rings of flame holes 13 are formed on the flame outlet 1, which increases the formation of flame and can improve the heating effect on the cookware. In an optional embodiment, as... Figure 3 As shown, each ring of fire holes 13 can be composed of multiple individually arranged fire holes 13 spaced apart along the circumference of the fire outlet 1, which can achieve uniform heating of the cookware over a large area. In another optional embodiment, each ring of fire holes 13 can also be in the shape of an annular slit, which can also achieve uniform heating of the cookware over a large area.

[0041] 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 flame outlet 1 includes an inner ring portion 11 and an outer ring portion 12 located on the outer periphery of the inner ring portion 11. The inner ring portion 11 overlaps on the inner ring wall 201 of the flame cap base 20, and the outer ring portion 12 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.

[0042] In this embodiment, the firing element 1 is made of copper alloy. For example, the copper alloy can be copper-lead alloy, copper-zinc alloy, or copper alloy with copper as the basic element and doped with tin, aluminum or manganese. These copper alloys are common materials in the prior art and are not specifically limited here.

[0043] Optionally, to ensure that the thermal conductivity of connector 2 is below 55 W / (m·K), connector 2 can be made of stainless steel or cast iron. For example, 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. It should be noted that the thermal conductivity of stainless steel is lower than that of cast iron. Therefore, connector 2 is preferably made of stainless steel, which is more effective than cast iron. Optionally, the energy-concentrating disc 200 is made of stainless steel.

[0044] Optionally, such as Figure 2 As 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.

[0045] 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.

[0046] In an optional embodiment, such as Figure 5 As shown, the outer ring 12 has an overlapping edge 121 on its outer periphery, and the top of the connector 2 has a horizontal end face 231. The overlapping edge 121 is sealed and overlapped on the horizontal end face 231. By overlapping the overlapping edge 121 on the horizontal end face 231 under the action of gravity, an end face seal is formed between the overlapping edge 121 and the horizontal end face 231, ensuring that the gas does not leak from the mating position between the two as much as possible.

[0047] In an optional embodiment, such as Figure 5As shown, an annular flame stabilizing groove 122 is provided on the outer periphery of the outer ring portion 12. The flame stabilizing groove 122 is located on the upper side of the overlapping edge 121 and is connected to the outermost ring of flame holes 13. The flame stabilizing groove 122 is located on the lower side of the outermost ring of flame holes 13 and is used to transport gas to generate a flame. It can heat the flame root of the outermost ring of flame holes 13 and form a stable annular auxiliary flame below the outermost ring of flame holes 13, thereby playing a role in stabilizing the flame. Furthermore, since the flame stabilizing groove 122 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.

[0048] In an optional embodiment, such as Figure 5 As shown, multiple spaced flame-stabilizing holes 123 are also provided along the circumference of the outer ring portion 12. The flame-stabilizing holes 123 connect the flame-stabilizing groove 122 and the premixing chamber 30. In this way, the flame-stabilizing holes 123 can transport the gas in the premixing chamber 30 to the flame-stabilizing groove 122, ensuring that the gas in the flame-stabilizing groove 122 is sufficient. The flame-stabilizing groove 122 can form a ring-shaped flame through the gas transported by the multiple flame-stabilizing holes 123, ensuring that the flame is continuous and uniform, thereby playing a role in flame stabilization.

[0049] 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 121 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 121 overlaps the horizontal end surface 231, and a certain gap 233 is maintained between the periphery of the overlapping edge 121 and the vertical surface 232. When the seal between the overlapping edge 121 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 122, preventing the gas leak from causing danger.

[0050] 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 vertical portion 21 is fitted onto the outer ring wall 202 of the flame cap seat 20. The inclined portion 22 gradually slopes from bottom to top towards the flame outlet 1 and engages with the outer ring portion 12 of the flame outlet 1. The aforementioned groove 23 is formed at the top of the inclined portion 22. By setting the connector 2 to an inwardly bent shape, the radial dimension of the flame outlet 1 can be reduced accordingly, thereby reducing manufacturing costs.

[0051] In an optional embodiment, such as Figure 4As 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.

[0052] 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 gas stove, characterized in that, It includes a burner (100) and a concentrating plate (200), the concentrating plate (200) being arranged around the outer periphery of the burner (100), the burner (100) including a flame cap (10) and a flame cap seat (20), the flame cap (10) being fastened to the flame cap seat (20) and forming a premixing chamber (30) with the flame cap seat (20); The flame cap (10) includes a flame outlet (1) and a connector (2) arranged circumferentially around the flame cap base (20). The flame outlet (1) is located radially inside the connector (2). The flame outlet (1) is a copper alloy and has flame holes (13). The thermal conductivity of the connector (2) is less than 55 W / (m·K). A secondary air replenishment channel (40) is formed between the connector (2) and the energy-concentrating disk (200).

2. The gas stove according to claim 1, characterized in that, The connector (2) is made of stainless steel or cast iron.

3. The gas stove according to claim 1, characterized in that, The inner diameter of the energy-concentrating disk (200) is D0, the outer diameter of the fire-emitting component (1) is D1, and the outer diameter of the connecting component (2) is D2, wherein D1≤D0≤D2.

4. The gas stove according to claim 1, characterized in that, The minimum width of the secondary air replenishment channel (40) is H, 5mm≤H≤8mm.

5. The gas stove according to claim 1, characterized in that, The flame cap seat (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), and the flame outlet (1) overlaps between the inner ring wall (201) and the top of the connector (2).

6. The gas stove according to claim 5, characterized in that, The fire-emitting component (1) includes an inner ring (11) and an outer ring (12). The inner ring (11) overlaps the inner ring wall (201). The outer ring (12) has an overlapping edge (121) on its outer periphery. The top of the connector (2) has a horizontal end face (231). The overlapping edge (121) is sealed and overlapped on the horizontal end face (231).

7. The gas stove according to claim 6, characterized in that, The outer ring (12) has an annular flame stabilizing groove (122) on its outer periphery. The flame stabilizing groove (122) is located on the upper side of the overlapping edge (121) and is connected to the flame hole (13).

8. The gas stove according to claim 7, characterized in that, The outer ring (12) is also provided with a plurality of spaced flame stabilizing holes (123) along its circumference, and the flame stabilizing holes (123) are connected to the flame stabilizing groove (122) and the premixing chamber (30).

9. The gas stove according to claim 7, characterized in that, The connector (2) has a groove (23) at one end near the fire outlet (1). The groove (23) includes a vertical surface (232) and a horizontal end surface (231). The overlapping edge (121) overlaps the horizontal end surface (231) and has a gap (233) between it and the vertical surface (232).

10. The gas stove according to any one of claims 1 to 9, characterized in that, The connector (2) includes a vertical part (21) and an inclined part (22) connected to each other. The vertical part (21) is sleeved on the outside of the flame cover seat (20). The inclined part (22) gradually tilts from bottom to top toward the flame outlet (1) and cooperates with the flame outlet (1).

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