Pot rack and stove

Abstract

The pot rack comprises an upper-layer cover, a middle-layer cover and a lower-layer cover which are arranged in a stacked mode, the upper-layer cover and the lower-layer cover are annularly arranged, the inner sides of the upper-layer cover and the lower-layer cover jointly form a combustion cavity, the combustion cavity is used for allowing flame of a combustor to pass through, and air supplementing openings communicating with the combustion cavity are formed in the inner sides of the upper-layer cover and the lower-layer cover at intervals; wherein the middle-layer cover comprises a middle-layer base body and a flow guide piece connected to the bottom face of the middle-layer base body, an air inlet is formed in the lower-layer cover, external air enters from the air inlet and flows to a fire hole of the combustor through the air supplementing opening, and the flow guide piece is used for preheating the external air and disturbing the external air. According to the embodiment, external air enters from the air inlet and then flows through the flow guide piece, the heat exchange area in contact with the external air can be increased, the temperature of the external air entering the combustion cavity is increased, and the external air is fully preheated. And external air can form vortex when passing through the flow guide part, so that the contact time of the external air and the flow guide part is prolonged, and a better heat exchange effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking ranges, in particular to a pot rack and a cooking range. BACKGROUND

[0002] A cooking range is a device that uses fuel for combustion to provide a heat source for cooking. A cooking range mainly consists of a pot rack, a burner, a gas supply system, and the like. The pot rack is a supporting structure of the cooking range and is used to place cooking utensils. The burner is the core part of the cooking range and is responsible for mixing fuel with air and then burning it to generate heat.

[0003] During the combustion process, the burner needs sufficient oxygen to ensure complete combustion of the fuel, thereby improving the combustion efficiency. However, in the related art, the design of the pot rack often cannot effectively guide secondary air into the flame area of the burner, resulting in insufficient combustion and incomplete conversion of fuel into heat energy, thereby causing waste of energy. CONTENT OF THE INVENTION

[0004] The embodiments of the present application provide a pot rack and a cooking range, aiming to improve the combustion efficiency of the cooking range.

[0005] In one aspect, the embodiments of the present application provide a pot rack, which comprises an upper cover, a middle cover, and a lower cover arranged in layers, the upper cover and the lower cover are arranged in a ring shape and the inner sides thereof jointly form a combustion chamber, the combustion chamber is used for the flame of the burner to pass through, and the inner sides of the upper cover and the lower cover are spaced apart to form a gas supplement port communicating with the combustion chamber.

[0006] The middle cover comprises a middle base and a flow guide connected to the bottom surface of the middle base, the lower cover is provided with an air inlet, external air enters the air inlet and flows to the fire hole of the burner through the gas supplement port, and the flow guide is used for preheating and turbulence of the external air.

[0007] In some embodiments, the middle base is arranged in a ring shape, the inner edge of the middle base extends into the gas supplement port, and the first gas supplement channel communicating with the air inlet and the gas supplement port is formed between the middle base and the lower cover.

[0008] In some embodiments, the flow guide and part of the middle base form a flow guide channel, and the flow guide channel is open in the flow direction from the air inlet to the gas supplement port.

[0009] In some embodiments, a plurality of flow guides are arranged along the circumference of the middle base.

[0010] In some embodiments, the flow guide comprises two flow guide plates spaced apart along the circumference of the middle layer base, and the two flow guide plates and part of the middle layer base form the flow guide channel.

[0011] In some embodiments, the distance between the two flow guide plates decreases in the flow direction from the air inlet to the air supplementing outlet.

[0012] In some embodiments, the upper surface of the middle layer base is spaced apart from the upper layer cover and forms a second air supplementing channel communicating with the air supplementing outlet, and the middle layer base is further provided with an air outlet communicating with the second air supplementing channel.

[0013] In some embodiments, the flow guide plates are formed by stamping the middle layer base, and the air outlet is a gap formed by stamping the middle layer base behind the flow guide plates.

[0014] In some embodiments, the upper layer cover has a mounting opening.

[0015] The middle layer base comprises a middle layer inner extension and a middle layer outer extension, the middle layer outer extension is connected to the outer edge of the middle layer inner extension, the bottom surface of the middle layer inner extension is connected with the flow guide, and the middle layer outer extension has a limiting hole.

[0016] The pot rack further comprises a pot leg for supporting a pot, and the pot leg is supported by the upper layer cover and partially penetrates the mounting opening and the limiting hole.

[0017] In some embodiments, the middle layer inner extension has a spiral channel curved away from the lower layer cover.

[0018] The lower layer cover comprises a lower layer inner extension and a lower layer outer extension, the lower layer outer extension is connected to the outer edge of the lower layer inner extension, the lower layer inner extension and the middle layer inner extension are arranged opposite to each other in the up-down direction, and the lower layer inner extension is provided with the air inlet, and the external air flowing into the air inlet can flow back to the air supplementing outlet through the spiral channel.

[0019] In some embodiments, the middle layer inner extension comprises:

[0020] An inner extension sub-portion, the bottom surface of which is connected with the flow guide;

[0021] A first spiral sub-portion connected to the outer edge of the inner extension sub-portion and inclinedly arranged towards the upper layer cover; and

[0022] A second spiral sub-portion connected to the outer edge of the first spiral sub-portion and arranged at an angle with the first spiral sub-portion to form the spiral channel.

[0023] Alternatively, this application provides a stove, including: a pot rack as described in any of the above; and a burner, at least partially disposed in the combustion chamber.

[0024] This embodiment of the application includes an upper cover, a middle cover, and a lower cover stacked sequentially in a vertical direction. The inner sides of the upper and lower covers form a combustion chamber and an air inlet. External air can enter through the air inlet of the lower cover and then flow to the burner's flame holes through the air inlet. This provides sufficient oxygen for combustion, contributing to complete combustion and improving combustion efficiency.

[0025] The bottom of the middle layer shroud is connected to a guide vane. External air enters through the air intake and flows through the guide vane. The guide vane preheats and turbulents the external air, increasing the heat exchange area in contact with the external air and raising the temperature of the air entering the combustion chamber, ensuring thorough preheating. Furthermore, the external air forms vortices as it passes through the guide vane, guiding its flow direction and extending the contact time between the air and the guide vane, resulting in better heat exchange. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a stove provided in one embodiment of this application;

[0028] Figure 2 for Figure 1 A partial structural breakdown diagram of the provided stove;

[0029] Figure 3 This is a structural schematic diagram of a stove provided in one embodiment of this application from another angle;

[0030] Figure 4 for Figure 3 Cross-sectional view along the AA direction;

[0031] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0032] Figure 6 for Figure 4 A magnified view of a section at point C;

[0033] Figure 7 for Figure 1Another structural exploded schematic view of the provided stove;

[0034] Figure 8 For Figure 7 A local enlarged view at D;

[0035] Figure 9 For Figure 5 A schematic view of the flow direction of the secondary air supplement of the structure shown.

[0036] Legend of reference signs:

[0037] 100, pot rack; 100a, combustion cavity; 100b, air supplement port; 100c, first air supplement channel; 100d, second air supplement channel; 10, upper cover; 10a, mounting opening; 20, middle cover; 20a, flow guide channel; 21, middle base body; 21a, air passage; 211, middle inner extension; 211a, rotation channel; 2111, inner extension subpart; 2112, first rotation subpart; 2113, second rotation subpart; 212, middle outer extension; 212a, limiting hole; 22, flow guide piece; 221, flow guide plate; 30, lower cover; 30a, air inlet; 31, lower inner extension; 32, lower outer extension; 40, pot leg; 50, support leg;

[0038] 200, burner; 200a, fire hole; 300, bottom plate. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0040] The present application proposes a stove in one aspect, which refers to a device that uses fuel for combustion to provide a heat source for cooking. The common stoves on the market include gas stoves, electromagnetic stoves, etc. Gas stoves have been widely used in household kitchens due to their high thermal efficiency, easy use, and other advantages. The present application takes a gas stove as an example for discussion, as shown in Figure 1 The stove mainly consists of a pot rack 100, a burner 200, a gas supply system, etc.

[0041] A burner 200 is typically installed on a stovetop (not shown in the figure) and is responsible for mixing fuel and air for combustion to generate heat for heating cookware. Specifically, the burner 200 has flame holes 200a, from which a mixture of fuel gas and primary air is ejected and ignited by an ignition device, forming a flame with the help of secondary air. This flame can be used to heat the cookware. Optionally, the burner 200 may include an outer ring burner cap and an inner ring burner cap. The outer ring burner cap has an outer flame hole 200a, and the inner ring burner cap has an inner flame hole 200a. Both the outer and inner flame holes 200a can eject flames upwards.

[0042] The burner 200 is also provided with a base plate 300 at the bottom. The base plate 300 is connected to the burner 200. The base plate 300 has a large circumference, which can increase the contact area with the stove. As the bottom structure of the burner 200, the base plate 300 provides stable support for the burner 200, ensuring that the burner 200 remains in a fixed position during operation and will not shift or shake.

[0043] The pot rack 100 is used to place the pot on the stovetop and support the cookware. It prevents the cookware from sliding or tipping over during heating, reducing the risk of accidental injury and ensuring stability during cooking. The pot rack 100 surrounds the burner 200 and forms a combustion chamber 100a. During operation, the flame generated by the burner 200 passes through the combustion chamber 100a to contact the bottom of the cookware, thus heating it. With the pot rack 100 surrounding the cookware, the heat from the burner 200 is concentrated and transferred towards the cookware, preventing heat loss and ensuring that the heat from the burner 200 is fully applied to the cookware.

[0044] like Figures 2 to 4 As shown, to further improve the combustion efficiency of the stove, in some embodiments, the pot rack 100 includes an upper cover 10, a middle cover 20, a lower cover 30, pot supports 40, and support legs 50 stacked sequentially in the vertical direction. The upper cover 10 and the lower cover 30 are both annularly arranged, for example, in a circular, elliptical, or square ring shape. Furthermore, the upper cover 10 and the lower cover 30 can be made of materials with advantages such as high temperature resistance and high strength, such as cast iron, enamel, or galvanized steel. The pot supports 40 are supported by the upper cover 10, which has an installation opening 10a. The middle cover 20 has a limiting hole 212a at a position opposite to the installation opening 10a. Part of the pot supports 40 passes through the installation opening 10a and the limiting hole 212a, so that part of the pot supports 40 is firmly supported by the upper cover 10, and the middle cover 20 is suspended between the upper cover 10 and the lower cover 30.

[0045] The pot supporting legs 40 are provided in plurality, and are arranged at intervals in the circumferential direction of the upper cover 10, for carrying the pot, preventing the pot from sliding or toppling over during heating, reducing the occurrence of accidents, and ensuring stability during cooking. The pot supporting legs 40 can be made of cast iron or other materials with high temperature resistance.

[0046] The supporting legs 50 are arranged at intervals in the circumferential direction of the lower cover 30, and are connected to the bottom plate 300 at the other end away from the lower cover 30. The supporting legs 50 can improve the stability of the pot stand 100 supported on the bottom plate 300. In other embodiments, the supporting legs 50 can be connected to the lower cover 30 by welding or one-piece molding, and the present application does not limit this.

[0047] As shown in Figure 4 and Figure 5 , further, the upper cover 10 is lapped on the lower cover 30, and the inner sides of the upper cover 10 and the lower cover 30 also jointly form a combustion chamber 100a. The burner 200 is arranged in the middle of the pot stand 100, and the combustion chamber 100a of the pot stand 100 is used for the flame of the burner 200 to pass through. The inner sides of the upper cover 10 and the lower cover 30 are arranged at intervals to form a gas supplement port 100b communicating with the combustion chamber 100a. Understandably, the gas supplement port 100b is arranged in the circumferential direction of the burner 200, and the gas supplement port 100b communicates with the combustion chamber 100a to provide additional air supply for the flame of the burner 200.

[0048] Please continue to refer to Figure 4 and Figure 5 , the middle cover 20 is located between the upper cover 10 and the lower cover 30, and the middle cover 20 includes a middle base body 21 and a flow guide 22 connected to the bottom surface of the middle base body 21. The middle base body 21 is the main part of the middle cover 20, and is arranged in a ring shape. Its specific shape can be adapted to the upper cover 10 and the lower cover 30.

[0049] The lower cover 30 is provided with an air inlet 30a which communicates with the outside. The air inlet 30a can be a square or circular port, which is not limited in the present application. The outside air can enter through the air inlet 30a and first flow through the flow guide 22 which is used to preheat and disturb the outside air. The flow guide 22 can increase the heat exchange area contacted by the outside air, increase the air temperature entering the combustion chamber 100a, and make the outside air be fully preheated. When the outside air passes through the flow guide 22, the outside air forms a vortex. The flow guide 22 can guide the flow direction of the outside air and prolong the contact time of the outside air with the flow guide 22, so as to achieve a better heat exchange effect. The outside air which is fully preheated flows to the fire hole 200a of the burner 200 through the air supplement port 100b, provides sufficient oxygen for combustion, realizes secondary air supply, makes the combustion more sufficient, improves the combustion efficiency, and reduces energy waste.

[0050] As shown in Figure 5 , in some embodiments, the inner edge of the middle base 21 extends into the air supplement port 100b, and the middle base 21 and the lower cover 30 form a first air supplement channel 100c which communicates the air inlet 30a and the air supplement port 100b. The flow guide 22 is arranged in the first air supplement channel 100c. After the outside air enters from the air inlet 30a, the outside air can flow along the first air supplement channel 100c and meet the flow guide 22 arranged in the first air supplement channel 100c. When the outside air passes through the flow guide 22, the outside air forms a vortex, disturbs the flow direction of the air, prolongs the contact time of the air with the flow guide 22, and makes the heat of the flow guide 22 be fully transferred to the air, so as to preheat the secondary air sufficiently, thereby improving the heating efficiency.

[0051] Please continue to refer to Figure 5 , further, the flow guide 22 and part of the middle base 21 form a flow guide channel 20a which is open in the flow direction from the air inlet 30a to the air supplement port 100b. The flow guide channel 20a extends substantially along the radial direction of the middle base 21. The extension direction of the flow guide channel 20a is perpendicular to the axial direction of the combustion chamber 100a. The flow guide channel 20a can guide the outside air to flow along a specific path, ensures that the air can continuously and stably enter the combustion chamber 100a, and the air can more fully absorb the heat of the flow guide 22 when flowing through the flow guide channel 20a, thereby achieving a better preheating effect. The temperature of the preheated air is increased, thereby improving the combustion efficiency.

[0052] As shown in Figure 7 and Figure 8As shown, the plurality of air inlets 30a are arranged in the circumferential direction of the lower cover 30, so that external air can enter from the plurality of air inlets 30a, and the flow guide 22 is provided with a plurality of flow guides 22 arranged in the circumferential direction of the middle layer base 21, that is, a plurality of flow guide channels 20a are distributed in the circumferential direction of the combustion chamber 100a, so that external air can be uniformly supplemented in the circumferential direction of the burner 200a, and sufficient oxygen supply can be ensured in the circumferential direction of the burner 200, so as to avoid insufficient combustion in some areas of the combustion chamber 100a.

[0053] Please continue to refer to Figure 7 and Figure 8 In some embodiments, the flow guide 22 includes two flow guide plates 221 arranged in the circumferential direction of the middle layer base 21, and the flow guide plate 221 can be a planar sheet connected to the bottom of the middle layer base 21 and extending in the up-down direction. The planar sheet facilitates production and reduces production complexity and cost. The two flow guide plates 221 and part of the middle layer base 21 form a flow guide channel 20a. Understandably, the two flow guide plates 221 and the middle layer base 21 between the two flow guide plates 221 form a flow guide channel 20a. It should be noted that each air inlet 30a is located between the two flow guide plates 221 of a flow guide 22. When external air enters the air inlet 30a and flows through the flow guide channel 20a, it can fully absorb the heat of the two flow guide plates 221 on both sides, thereby achieving better preheating effect.

[0054] Specifically, the extension direction of the two flow guide plates 221 is arranged at an angle with the radial direction of the middle layer base 21, and the two flow guide plates 221 can be arranged radially symmetrically along the middle layer base 21. In the flow direction from the air inlet 30a to the air supplementing port 100b, the distance between the two flow guide plates 221 is reduced, that is, the two flow guide plates 221 form an "eight" shape from the outer periphery of the middle layer base 21 to the inner periphery, which not only increases the heat contact area between the secondary air and the flow guide plate 221. At the same time, when the secondary air passes through the flow guide channel 20a, a pressure difference is formed outside and inside the eight-shaped flow guide plate 221, where the inside is the side of the flow guide plate 221 facing the combustion chamber 100a, and the outside is the side of the flow guide plate 221 facing the outer periphery of the pot rack 100. The secondary air will form a vortex that can strengthen air disturbance when it flows from the outside to the inside of the flow guide channel 20a, thereby achieving better heat exchange effect and more heat recovery during the secondary air passing through the flow guide plate 221, and further fully preheating the air at the bottom, thereby improving the combustion efficiency of the stove.

[0055] As air flows through the guide vanes 221, the narrowing of the guide channel 20a increases the contact area with the guide vanes 221, which helps the air absorb more heat, thereby improving the preheating effect and heat exchange efficiency. Furthermore, as the distance between the guide vanes 221 decreases, the airflow guide channel 20a narrows, forcing an increase in air velocity, which helps increase the dynamic pressure of the air, thus enhancing the combustion effect.

[0056] Optionally, the opposing surfaces of the two guide vanes 221 can be one of curved, wavy, or serrated surfaces. By setting the opposing surfaces of the two guide vanes 221 to the aforementioned shape, compared to a scheme where the opposing surfaces of the two guide vanes 221 are planar, this embodiment can further increase the heat exchange area of ​​the secondary air in the guide channel 20a, prolong the residence time of the secondary air in the guide channel 20a, thereby further improving the heating efficiency of the secondary air and further improving the heat utilization rate, thus improving the combustion efficiency of the burner 200 of the stove.

[0057] like Figure 8 and Figure 9 As shown, in some embodiments, the upper surface of the middle substrate 21 is spaced apart from the upper cover 10 and forms a second air supply channel 100d that communicates with the air supply port 100b. Understandably, the second air supply channel 100d is located above the first air supply channel 100c. The second air supply channel 100d and the first air supply channel 100c can provide sufficient secondary air to the burner orifice 200a of the burner 200 in the height direction.

[0058] The middle substrate 21 is also provided with an air outlet 21a that connects to the second air supply channel 100d. Understandably, external air enters the first air supply channel 100c from the air inlet 30a of the lower cover 30. The first air supply channel 100c is also connected to the air outlet 21a. Some air can enter the second air supply channel 100d through the air outlet 21a. The secondary air entering the second air supply channel 100d can flow out through the air supply port 100b, providing more air supply to the flame of the burner 200, which helps to form a stable and uniform flame zone and avoid flame flickering or extinguishing.

[0059] Specifically, the baffle 221 is formed by stamping the middle substrate 21, and the air outlet 21a is a notch created after the middle substrate 21 is stamped into the baffle 221, reducing additional assembly steps between the baffle 221 and the middle substrate 21. This integrated design not only improves production efficiency and reduces additional processing steps and material consumption, thereby lowering production costs, but also enhances the strength and stability of the overall structure. This design reduces structural weaknesses caused by assembly and improves the durability of the pot frame 100.

[0060] The stamping process can ensure that the size and shape of each deflector 221 are highly consistent, thereby improving the overall quality and performance consistency of the pot rack 100. The structure of the deflector 221 and the air passage 21a formed by stamping is more stable, reducing the risk of deformation due to thermal stress or mechanical stress during use.

[0061] As shown in Figure 6 and Figure 9 In some embodiments, the middle layer base 21 includes a middle layer inner extension 211 and a middle layer outer extension 212 connected to the outer edge of the middle layer inner extension 211. Understandably, the middle layer inner extension 211 is closer to the combustion chamber 100a than the middle layer outer extension 212, and the bottom surface of the middle layer inner extension 211 is connected to the flow guide 22. Since the flow guide 22 is close to the combustion chamber 100a, it can ensure stable air supply during combustion of the burner 200, reduce flame fluctuation, and improve combustion stability.

[0062] The middle layer outer extension 212 has a limiting hole 212a (as shown in Figure 8 The limiting hole 212a is provided on the middle layer outer extension 212 away from the combustion chamber 100a, which can reduce the influence of high temperature on the limiting structure of the pot support 40. The limiting hole 212a is used to fix the pot support 40, i.e., the diameter of the circumference formed by the plurality of pot supports 40 is larger, which can better support the pot.

[0063] As shown in Figure 6 and Figure 9 Further, the middle layer inner extension 211 has a spiral passage 211a curved away from the lower layer cover 30, and the flow guide 22 is closer to the combustion chamber 100a than the spiral passage 211a. The lower layer cover 30 includes a lower layer inner extension 31 and a lower layer outer extension 32 connected to the outer edge of the lower layer inner extension 31. The lower layer inner extension 31 is parallel and opposite to the middle layer inner extension 211 in the up-down direction, and is provided with an air inlet 30a. The external air flowing into the air inlet 30a can flow back to the air supplementing port 100b through the spiral passage 211a. Since the external air moves disorderly after flowing into the air inlet 30a, part of it moves towards the flow guide 22, and part of it moves away from the flow guide 22. The air moving away from the flow guide 22 can be guided to the direction of the flow guide 22 after swirling in the spiral passage 211a, and eventually also be guided to the direction of the flow guide 22, so that more secondary air can be supplemented into the combustion chamber 100a, thereby realizing optimized distribution and efficient utilization of air.

[0064] Specifically, the inner extension part 211 includes an inner extension sub-part 2111, a first rotation sub-part 2112 and a second rotation sub-part 2113. The inner extension sub-part 2111 is arranged perpendicularly to the axial direction of the combustion chamber 100a, and the bottom surface of the inner extension sub-part 2111 is connected with the flow guide 22. The first rotation sub-part 2112 is connected to the outer edge of the inner extension sub-part 2111 and is arranged obliquely towards the upper cover 10. The second rotation sub-part 2113 is connected to the outer edge of the first rotation sub-part 2112 and is arranged at an angle with the first rotation sub-part 2112 to form a rotation channel 211a, i.e. the second rotation sub-part 2113 is arranged obliquely towards the lower cover 30. It should be noted that the distance between the second rotation sub-part 2113 and the lower extension part 32 gradually decreases, which increases the amount of air entering the rotation channel and ensures that more air can be guided into the combustion chamber 100a, thereby improving the utilization rate of air.

[0065] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0066] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0067] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0068] It is to be understood that the terms "fixedly mounted" and "fixedly attached" should be interpreted broadly to include a direct connection between elements, as well as an indirect connection through one or more intermediary elements. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like, merely describe the orientation of the elements as shown in the figures and are not meant to be limiting.

[0069] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pot support, characterized in that The burner comprises an upper cover, a middle cover and a lower cover arranged in layers, the upper cover and the lower cover are arranged in a ring shape and the inner sides of the upper cover and the lower cover jointly form a combustion cavity for the flame of the burner to pass through, and the inner sides of the upper cover and the lower cover are spaced apart to form a gas supplement port communicating with the combustion cavity; The middle cover comprises a middle cover base and a flow guide connected to the bottom surface of the middle cover base, the lower cover is provided with an air inlet, external air enters the air inlet and flows to the fire hole of the burner through the gas supplement port, and the flow guide is used for preheating and turbulence of the external air.

2. The pot support of claim 1, wherein The middle cover base is arranged in a ring shape, the inner edge of the middle cover base extends into the gas supplement port, and the first gas supplement channel communicating with the air inlet and the gas supplement port is formed between the middle cover base and the lower cover.

3. The pot support of claim 2, wherein The flow guide and part of the middle cover base form a flow guide channel which is open in the flow direction from the air inlet to the gas supplement port.

4. The pot support of claim 3, wherein The flow guide is provided with a plurality of flow guides which are arranged in the circumferential direction of the middle cover base.

5. The pot support of claim 4 wherein, The flow guide comprises two flow guide plates arranged in the circumferential direction of the middle cover base, and the two flow guide plates and part of the middle cover base form the flow guide channel.

6. The pot support of claim 5 wherein, In the flow direction from the air inlet to the gas supplement port, the distance between the two flow guide plates decreases.

7. The pot support of claim 5 wherein, The upper surface of the middle cover base is spaced apart from the upper cover and forms a second gas supplement channel communicating with the gas supplement port, and the middle cover base is further provided with an air outlet communicating with the second gas supplement channel.

8. The grate of claim 7, wherein, The flow guide plate is formed by stamping the middle cover base, and the air outlet is a gap generated after the flow guide plate is formed by stamping the middle cover base.

9. The pot support of claim 1, wherein The upper cover has a mounting opening; The middle cover base comprises a middle inner extension and a middle outer extension, the middle outer extension is connected to the outer edge of the middle inner extension, the bottom surface of the middle inner extension is connected with the flow guide, and the middle outer extension has a limiting hole; The pot rack further comprises a pot leg for supporting a pot, and the pot leg is supported on the upper cover and partially penetrates the mounting opening and the limiting hole.

10. The grate of claim 9, wherein, The middle inner extension has a spiral channel which is curved away from the lower cover; The lower cover comprises a lower inner extension and a lower outer extension, the lower outer extension is connected to the outer edge of the lower inner extension, the lower inner extension and the middle inner extension are arranged opposite to each other in the up-down direction, and the lower inner extension is provided with the air inlet, external air flowing into the air inlet can flow back to the gas supplement port through the spiral channel.

11. The grate of claim 10, wherein, The middle inner extension comprises: An inner extension sub-portion, the bottom surface of which is connected with the flow guide; A first spiral sub-portion connected to the outer edge of the inner extension sub-portion and inclined to the upper cover; and A second spiral sub-portion connected to the outer edge of the first spiral sub-portion and arranged at an angle with the first spiral sub-portion to form the spiral channel.

12. A hob, characterized in that The burner comprises: The pot rack according to any one of claims 1-11; And The burner is at least partially arranged in the combustion cavity.

Images