Energy gathering ring, pot support and stove

Abstract

The invention relates to the field of kitchen utensils, and particularly discloses an energy-gathering ring, a pot support and a kitchen range, the energy-gathering ring is of a hollow structure, the energy-gathering ring comprises a vertical outer peripheral wall and an inner peripheral wall inclined towards the center and the lower portion of the energy-gathering ring, the upper edge of the inner peripheral wall is connected with the upper edge of the outer peripheral wall, and the lower side of the energy-gathering ring is open; wherein the peripheral wall comprises a plurality of side plates which are arranged in the circumferential direction of the energy gathering ring, and every two adjacent side plates are connected through a straight plate. The energy-gathering ring is of a polygonal structure, the R angle connected with each side of the energy-gathering ring is optimized to be of a straight edge structure, and the opposite angles are designed to be equidistant straight edges, so that the convection path is shorter when secondary air is supplemented, the temperature of the secondary air is increased, the combustion is more sufficient, the generation of harmful gas is reduced, and the heat efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of kitchen utensils, and particularly to an energy-gathering ring, a pot support and a cooking stove. Background Art

[0002] At present, most of the methods to improve the combustion efficiency on the market are achieved by optimizing the burner design or adding double-layer or even triple-layer energy-gathering discs. By adjusting the nozzle diameter or the fire hole angle of the burner, or sandwiching an air layer for heat insulation, the combustion efficiency of the flue gas is improved.

[0003] However, these designs have the following defects:

[0004] 1. When optimizing the burner design, problems such as flashback and flame lift occur;

[0005] 2. Most of the double-layer or even triple-layer energy-gathering discs are bulky and mostly circular.

[0006] The existing gas stoves have high heat exchange losses, low heat exchange efficiency, and low energy utilization of the flue gas. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of high heat exchange losses, low heat exchange efficiency, and low energy utilization of the flue gas in the existing gas stoves, and to provide an energy-gathering ring, a pot support and a cooking stove.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] An energy-gathering ring, the energy-gathering ring is of a hollow structure, the energy-gathering ring includes a vertical outer peripheral wall and an inner peripheral wall that is inclined towards the center and downward of the energy-gathering ring, the inner peripheral wall and the upper edge are connected to the upper edge of the outer peripheral wall, and the lower side of the energy-gathering ring is open;

[0010] Wherein, the outer peripheral wall includes a plurality of side plates arranged in the circumferential direction of the energy-gathering ring, and two adjacent side plates are connected by a straight plate.

[0011] In this solution, the energy-gathering ring is formed into a polygonal structure, and the R corners where each side meets are optimized into straight-edge structures. The equidistant straight-edge design of the diagonals makes the flow path of the secondary air shorter when the secondary air is supplemented. During the combustion process of the burner to which the energy-gathering ring is applied, the secondary air is sucked into the interior of the disk cavity (the hollow part of the energy-gathering ring). Due to the limited space range of the disk cavity, the secondary air will quickly gather and squeeze inside the disk cavity. Compared with the R-type design, the diagonal straight-edge design shortens the flow path of the secondary air, enabling it to reach and contact the straight wall faster after being squeezed. When the secondary air reaches the contact surface of the pot support, it undergoes primary preheating through heat conversion. At the same time, along with the high-temperature flue gas sucked in, the secondary air collides and preheats with it rapidly, thereby undergoing secondary preheating. After multiple preheats, the temperature of the secondary air is increased. After the secondary air is heated, its mixture with the gas will be more sufficient. The closer it is to the ignition point, the more sufficient the combustion will be. Therefore, increasing the temperature of the secondary air can make the combustion more sufficient, thereby reducing the generation of harmful gases and improving the thermal efficiency.

[0012] The outer peripheral wall includes four side plates of the same length, so that the outer peripheral wall is formed into a square.

[0013] In this solution, the energy-gathering ring is a common square energy-gathering ring, which has higher adaptability.

[0014] Preferably, the circumferential width of the straight plate is 15 - 20 mm.

[0015] Preferably, the circumferential width of the straight plate is 16.5 mm.

[0016] In this solution, when the circumferential width of the straight plate is within the above range, a better effect of improving the thermal efficiency can be achieved.

[0017] The lower edge of the outer peripheral wall has a guiding surface that slopes towards the center and downward of the energy-gathering ring.

[0018] In this solution, the inner peripheral wall of the energy concentrating ring is inclined. When in use, the high-temperature flue gas climbs along the inner peripheral wall of the energy concentrating ring towards the outer peripheral side and then descends along the vertical outer peripheral wall. During the downward process of the high-temperature flue gas, its potential energy is converted into kinetic energy. When the speed of the flue gas increases, its pressure will decrease. Under the action of the pressure difference, the gas quickly enters the channel on the lower side of the energy concentrating ring. The high-temperature flue gas enters the hollow interior of the energy concentrating ring through the open opening on the lower side of the energy concentrating ring and mixes with the supplementary air in the hollow interior of the energy concentrating ring. In the hollow interior of the energy concentrating ring, the high-temperature flue gas rises and the normal-temperature air sinks, forming a local eddy current. Through heat conduction and heat radiation, the supplementary air is preheated. The heated air enters the burner at the center of the energy concentrating ring together with the flue gas, thereby reducing the substances generated by incomplete combustion in the flue gas. At the same time, part of the secondary air is inhaled into the burner along the air intake channel for secondary combustion, improving the efficiency of the burner and further enhancing the combustion efficiency of the cooking appliance. In addition, the guiding surface on the lower side of the outer peripheral wall and the cooking surface of the cooking appliance together form a surrounding air intake channel that expands outward and contracts inward, accelerating the entry of the secondary air and the high-temperature flue gas, thereby improving the combustion efficiency of the burner and further enhancing the combustion efficiency of the cooking appliance.

[0019] Preferably, the outer peripheral wall and the inner peripheral wall are connected by an arc-shaped surface.

[0020] In this solution, the outer peripheral wall and the inner peripheral wall are connected by an arc-shaped surface, which can help the high-temperature flue gas diffuse more smoothly towards the outer peripheral side.

[0021] Preferably, a downwardly concave groove is provided on the inner peripheral side of the inner peripheral wall.

[0022] In this solution, by providing a downwardly concave groove on the inner peripheral side of the inner peripheral wall, the liquid falling from above can be contained, preventing the liquid from directly splashing on the burner.

[0023] Preferably, a downwardly extending flange is provided on the inner peripheral side of the inner peripheral wall within the groove.

[0024] In this solution, on the inner peripheral side of the groove, a downward flange is also provided at the inner peripheral edge of the inner peripheral wall. This flange can guide the liquid overflowing from the groove to the liquid receiving tray, thereby preventing it from flowing towards the burner or towards the hollow part inside the energy concentrating ring, facilitating the cleaning of the cooking appliance.

[0025] A pot support includes the energy concentrating ring as described above.

[0026] A cooking appliance includes a burner and the pot support as described above, and the burner is located at the center of the pot support.

[0027] The positive and progressive effects of the present invention are as follows: The energy-gathering ring is formed into a polygonal structure, and the R corners where each side meets are optimized into straight-edge structures. The design of equal-distance straight edges for the diagonals makes the flow path of the secondary air shorter when the secondary air is replenished. During the combustion process of the burner to which the energy-gathering ring is applied, the secondary air is inhaled into the interior of the disk cavity (the hollow part of the energy-gathering ring). Due to the limited space range of the disk cavity, the secondary air will quickly gather and be compressed in the disk cavity. Compared with the R-type design, the diagonal straight-edge design shortens the flow path of the secondary air, enabling it to reach the contact straight wall faster after being compressed. When the secondary air reaches the contact surface of the pot support, it undergoes primary preheating through heat conversion. At the same time, along with the inhaled high-temperature flue gas, the secondary air collides with it rapidly for preheating, thereby undergoing secondary preheating. After multiple preheats, the temperature of the secondary air is increased. After the secondary air is heated, its mixing with the gas will be more sufficient. The closer it is to the ignition point, the more sufficient the combustion will be. Therefore, increasing the temperature of the secondary air can make the combustion more sufficient, thereby reducing the generation of harmful gases and improving the thermal efficiency. The pot support and the cooking appliance including the above-mentioned energy-gathering ring have the same effects as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. is a top view structural schematic diagram of a cooking appliance according to an embodiment of the present invention.

[0029] Figure 2 FIG. is a cross-sectional structural schematic diagram of a cooking appliance according to an embodiment of the present invention.

[0030] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A of

[0031] Figure 4 FIG. is a three-dimensional structural schematic diagram of a pot support according to an embodiment of the present invention.

[0032] Figure 5 FIG. is a three-dimensional structural schematic diagram of an energy-gathering ring according to an embodiment of the present invention.

[0033] Figure 6 FIG. is a planar structural schematic diagram of an energy-gathering ring according to an embodiment of the present invention.

[0034] Figure 7 is taken along Figure 6 sectional structural schematic diagram of the energy-gathering ring taken along line B-B of

[0035] Figure 8 FIG. is a side view structural schematic diagram of an energy-gathering ring according to an embodiment of the present invention.

[0036] Figure 9 FIG. is a comparison schematic diagram of the corner structures of this embodiment and the comparative example.

[0037] Figure 10Schematic cross-sectional structure diagram of a pot support according to an embodiment of the present invention.

[0038] Description of reference numerals: Cooker 100; Burner 110; Pot support 120; Energy-gathering ring 121; Outer peripheral wall 1211; Side plate 1213; Straight plate 1214; Flow guiding surface 1216; Arc surface 1217; Inner peripheral wall 1219; Groove 1221; Flange 1223; Corner piece 124; Liquid receiving tray 130; Inclined surface 131; Air inlet channel 140; Vertical direction V. Detailed implementation manners

[0039] The present invention will be further described below in conjunction with the accompanying drawings by way of embodiments, but the present invention is not limited to the scope of the embodiments thereby.

[0040] As Figure 1-2 shown, this embodiment provides a cooker 100, which includes a burner 110 and a pot support 120, and the burner 110 is located at the center of the pot support 120.

[0041] As Figure 4 shown, the pot support 120 includes an energy-gathering ring 121 and corner pieces 124, and the corner pieces 124 are arranged on the energy-gathering ring 121 and are evenly arranged in the circumferential direction of the energy-gathering ring 121. In this embodiment, the corner pieces 124 are inserted into the energy-gathering ring 121 and penetrate the energy-gathering ring 121 in the vertical direction V. However, the present invention is not limited thereto, and the corner pieces 124 can be connected to the energy-gathering ring 121 by other existing structural arrangement methods.

[0042] In this embodiment, the corner pieces 124 and the energy-gathering ring 121 are combined into a whole to form the pot support 120. However, the present invention is not limited thereto, and the pot support 120 can also be separately arranged from the energy-gathering ring 121, that is, a separate pot support 120 without the energy-gathering ring 121 is provided, and then the energy-gathering ring 121 is erected on the pot support 120, and the energy-gathering ring 121 is formed as a separate component relative to the pot support 120 or a complete component that can be separately disassembled relative to the pot support 120.

[0043] As Figures 5-8 shown, the energy-gathering ring 121 is a hollow structure, and the energy-gathering ring 121 includes a vertical outer peripheral wall 1211 and an inner peripheral wall 1219 that inclines towards the center and below of the energy-gathering ring 121. The upper edge of the inner peripheral wall 1219 is connected to the upper edge of the outer peripheral wall 1211, and the lower side of the energy-gathering ring 121 is open; wherein, the outer peripheral wall 1211 includes a plurality of side plates 1213 arranged in the circumferential direction of the energy-gathering ring 121, and two adjacent side plates 1213 are connected by a straight plate 1214.

[0044] The energy - concentrating ring 121 is formed into a polygonal structure, and the R - corners where each side meets are optimized into straight - edge structures. The design of equal - distance straight - edges for the diagonals makes the flow path of the secondary air shorter when the secondary air is supplemented. During the combustion process of the burner 110 to which the energy - concentrating ring 121 is applied, the secondary air is inhaled into the interior of the disk cavity (the hollow part of the energy - concentrating ring 121). Due to the limited space range of the disk cavity, the secondary air will quickly gather and be squeezed inside the disk cavity. Compared with the R - type design, the design of diagonal straight - edges shortens the path of the secondary air, enabling it to reach the contact straight wall faster after being squeezed. When the secondary air reaches the contact surface of the pot support 120, it undergoes primary pre - heating through heat conversion. At the same time, along with the inhaled high - temperature flue gas, the secondary air collides with it quickly for pre - heating, thus undergoing secondary pre - heating. After multiple pre - heatings, the temperature of the secondary air is increased. After the secondary air is heated, its mixture with the gas will be more sufficient. The closer it is to the ignition point, the more sufficient the combustion will be. Therefore, increasing the temperature of the secondary air can make the combustion more sufficient, thereby reducing the generation of harmful gases and improving the thermal efficiency.

[0045] In this embodiment, the outer peripheral wall 1211 includes four side plates 1213 of the same length, so that the outer peripheral wall 1211 is formed into a square. Here, the "square" means that when viewed from above, the shape enclosed by the outer peripheral wall 1211 looks approximately square, rather than a square with absolutely sharp corners. The energy - concentrating ring 121 is a common square energy - concentrating ring 121, which has higher adaptability.

[0046] In other embodiments, the outer peripheral wall 1211 can also be formed into other polygonal structures according to needs, such as adapting to the shape of the burner 110 or the cooker 100, such as a pentagon, a hexagon, etc. The lengths of each side can be equal or unequal.

[0047] Table 1 shows the comparison results between the square pot support 120 with straight - edge diagonal characteristics in this embodiment and the square pot support 120 with R - shaped diagonal characteristics in the comparative example.

[0048] Comparative Example This Example Diagonal Feature R-Type Straight Edge Room Temperature (°C) 17 17 CO (ppm) 345.1 258.56 Efficiency (%) 69.80 70.82

[0049] Both this embodiment and the comparative example use a 230mm * 230mm square pot support 120, with the single - side length L being 230 mm and the total height H being 58.8 mm. The height H1 of the exhaust port is 12 mm, and the height H2 of the energy - concentrating ring 121 is 20.5 mm, as Figure 10 shown.

[0050] The only structural difference between the pot support 120 in this embodiment and the pot support 120 in the comparative example is that the corners of the energy - concentrating ring 121 in this embodiment are straight - edge structures, while the corners of the energy - concentrating ring 121 in the comparative example are R - shaped structures. See Figure 9, L1 is the length from the straight plate 1214 of the energy focusing ring 121 of this embodiment to the center of the energy focusing ring 121 , and L2 is the length from the R angle of the energy focusing ring 121 of the comparative example to the center of the energy focusing ring 121 .

[0051] Compared with the R-type design of the comparative example, the diagonal equidistant straight edge design of this embodiment makes the flow path shorter when the secondary air is replenished, such as Figure 9 As shown, L1<L2, during the combustion process of the burner 110 used by the energy-gathering ring 121, the secondary air is sucked into the disc cavity (the hollow part of the energy-gathering ring 121). Due to the limited space range of the disc cavity, the secondary air will quickly gather and squeeze in the disc cavity, see Figure 7 , where the blue arrow indicates the air at room temperature, the red arrow indicates the high-temperature flue gas, and the orange dotted arrow indicates the preheated air. Compared with the R-type design, the diagonal straight edge (straight plate 1214) design shortens the secondary air path, so that it can reach the contact straight wall faster after extrusion. When the secondary air reaches the contact surface of the pot support 120, it is preheated once through heat conversion. At the same time, along with the inhaled high-temperature flue gas, the secondary air is quickly collided with it for preheating, thereby performing secondary preheating. After multiple preheatings, the temperature of the secondary air is increased. After the secondary air is heated, it will be more fully mixed with the gas. The closer to the ignition point, the more fully the combustion will be. Therefore, the temperature of the secondary air is increased, which can make the combustion more complete, thereby reducing the generation of harmful gases and improving thermal efficiency. At the same time, the diagonal airflow path inside the energy gathering ring 121 is abruptly shortened compared to the large straight edge section (side plate 1213) itself. The airflow velocity of the diagonal section is faster than that of the large straight edge section. When multiple airflows collide, small disturbances are formed at the corners of adjacent side panels 1213, thereby forming a multi-disturbance multi-channel staggered cyclone, improving heat conversion and thus improving combustion efficiency.

[0052] Referring to the comparison data in Table 1, it can be seen that for the square pot support 120 with straight-edge diagonal features in this embodiment compared to the square pot support 120 with R-shaped diagonal features in the comparative example, at the same room temperature and the same distance from the smoke exhaust port, its thermal efficiency has increased by 1.44%, and at the same time, the flue gas (CO) has decreased by 25.1%. Generally, there is a positive correlation between the increase in thermal efficiency and the increase in flue gas. Moreover, in the prior art, when the smoke exhaust port remains unchanged, only changing the structure of the surface of the pot support 120 can only cause a thermal efficiency fluctuation of 0.4% - 0.5%, and at the same time, it has little effect on reducing flue gas. However, the square pot support 120 with straight-edge diagonal features in this embodiment compared to the square pot support 120 with R-shaped diagonal features in the comparative example (prior art) not only increases the thermal efficiency by 1.44% but also reduces the flue gas by 25.1%. Moreover, the conventional way to improve thermal efficiency is to make the bottom of the pot closer to the burner cap 110 to reduce heat loss, but this usually increases the flue gas. The pot support 120 in this embodiment does not change the distance from the burner cap to the bottom of the pot, and at the same time, it achieves the effects of improving thermal efficiency and reducing flue gas.

[0053] In actual application, a quadrilateral structure pot support 120 is generally used. Therefore, only the comparison results for the quadrilateral pot support 120 are listed to demonstrate the effects of the present invention. However, according to the above principle description, changing the R corners of the polygonal pot support 120 to straight edges can achieve the above-mentioned thermal efficiency improvement effect.

[0054] Preferably, the circumferential width W of the straight plate 1214 is 15 - 20 mm. More preferably, the circumferential width W of the straight plate 1214 is 16.5 mm. When the circumferential width of the straight plate 1214 is within the above range, a better thermal efficiency improvement effect can be achieved. The height H2 of the straight plate 1214 is preferably 20 - 25 mm.

[0055] The lower edge of the outer peripheral wall 1211 has a guiding surface 1216 that is inclined towards the center and downward of the energy-gathering ring 121.

[0056] Such as Figure 3As shown, the inner peripheral wall 1219 of the energy-gathering ring 121 is inclined. During use, the high-temperature flue gas (shown by the red arrow) climbs along the inner peripheral wall 1219 of the energy-gathering ring 121 towards the outer peripheral side and then descends along the vertical outer peripheral wall 1211. During the downward process of the high-temperature flue gas, its potential energy is converted into kinetic energy. When the velocity of the flue gas increases, its pressure will decrease. Under the action of the pressure difference, the gas quickly enters the intake passage 140 on the lower side of the energy-gathering ring 121. The high-temperature flue gas enters the hollow interior of the energy-gathering ring 121 through the open opening on the lower side of the energy-gathering ring 121 and mixes with the supplementary air in the hollow interior of the energy-gathering ring 121. Inside the hollow interior of the energy-gathering ring 121, the high-temperature flue gas rises and the normal-temperature air (shown by the blue arrow) sinks, forming a local eddy current. Through heat conduction and heat radiation, the supplementary air (shown by the blue arrow) is preheated. The heated air (shown by the orange dashed arrow) enters the burner 110 at the center of the energy-gathering ring 121 together with the high-temperature flue gas, thereby reducing the substances generated by incomplete combustion in the flue gas. At the same time, part of the secondary air is inhaled into the burner 110 along the intake passage 140 for secondary combustion, improving the efficiency of the burner 110 and further enhancing the combustion efficiency of the cooker 100. In addition, the guide surface 1216 on the lower side of the outer peripheral wall 1211 and the tabletop of the cooker 100 together form an outward-expanding and inward-contracting surrounding intake passage 140, accelerating the entry of the secondary air and the high-temperature flue gas, thereby improving the combustion efficiency of the burner 110 and further enhancing the combustion efficiency of the cooker 100. The energy-gathering ring 121 greatly increases the residence time of the secondary air in the energy-gathering ring 121 and improves the energy-gathering effect of the energy-gathering ring 121 through the vertical outer peripheral wall 1211, the guide surface 1216 along the lower edge of the outer peripheral wall 1211, and the open structure on the lower side, thereby improving the thermal efficiency of the cooker 100.

[0057] Preferably, the inclination angle of the inner peripheral wall 1219 with respect to the vertical direction V is °-°. More preferably, the inclination angle of the inner peripheral wall 1219 with respect to the vertical direction V is °. The high-temperature flue gas can climb more easily within this inclination angle of the inner peripheral wall 1219.

[0058] Preferably, the angle of the guide surface 1216 with respect to the vertical direction V is °-°. More preferably, the angle of the guide surface 1216 with respect to the vertical direction V is °. The guide surface 1216 can better guide the high-temperature flue gas into the passage within this inclination angle.

[0059] The outer peripheral wall 1211 and the inner peripheral wall 1219 are connected by an arc surface 1217. The connection of the outer peripheral wall 1211 and the inner peripheral wall 1219 by the arc surface 1217 can help the high-temperature flue gas spread more smoothly towards the outer peripheral side.

[0060] A downwardly recessed groove 1221 is provided on the inner peripheral side of the inner peripheral wall 1219. By providing the downwardly recessed groove 1221 on the inner peripheral side of the inner peripheral wall 1219, the liquid falling from above can be contained, preventing the liquid from directly splashing on the burner 110. When the liquid falls from above onto the disk surface of the energy concentrating ring 121, it will flow downward along the inclined inner peripheral wall 1219, thus flowing towards the burner 110 at the center of the energy concentrating ring 121 and splashing onto the burner 110, causing adverse consequences. The groove 1221 provided on the inner peripheral side of the inner peripheral wall 1219 can collect the liquid and reduce the kinetic energy of the liquid flowing down from the inner peripheral wall 1219 of the energy concentrating ring 121, thus preventing the liquid from directly splashing onto the burner 110.

[0061] On the inner peripheral side of the groove 1221, a downward flanging 1223 is further provided at the inner peripheral edge of the inner peripheral wall 1219. This flanging 1223 can guide the liquid overflowing from the groove 1221 onto the liquid receiving tray 130, thus preventing it from flowing towards the burner 110 or towards the hollow part inside the energy concentrating ring 121, facilitating the cleaning of the cooker 100.

[0062] The cooker 100 further includes a liquid receiving tray 130. The liquid receiving tray 130 is provided below the pot support 120, and the liquid receiving tray 130 has an inclined surface 131 below the guiding surface 1216. The inclined surface 131 is inclined towards the center and above of the energy concentrating ring 121.

[0063] The inclined surface 131 below the energy concentrating ring 121 and the guiding surface 1216 of the energy concentrating ring 121 together form an outwardly expanding and inwardly contracting surrounding air intake passage 140, accelerating the entry of secondary air and high-temperature flue gas, thereby enhancing the combustion efficiency of the burner 110 and further enhancing the combustion efficiency of the cooker 100.

[0064] Refer to Figure 3 , it can be clearly seen from the cross-sectional view that the guiding surface 1216 of the energy concentrating ring 121 and the inclined surface 131 of the liquid receiving tray 130 form a horn-shaped structure. This air intake passage 140 of this structure can accelerate the entry of secondary air and high-temperature flue gas.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation in which the device or element is located during normal use, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation at any time. Therefore, it should not be construed as a limitation of the present invention in this regard.

[0066] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but such changes and modifications all fall within the protection scope of the present invention.

Claims

1. An energy-gathering ring, characterized in that: The energy gathering ring is a hollow structure, comprising a vertical outer peripheral wall and an inner peripheral wall inclined toward the center and downward of the energy gathering ring, the inner peripheral wall and the upper edge are connected to the upper edge of the outer peripheral wall, and the lower side of the energy gathering ring is open; Wherein, the outer peripheral wall includes a plurality of side plates arranged in the circumferential direction of the energy gathering ring, and two adjacent side plates are connected by a straight plate.

2. The energy-gathering ring according to claim 1, characterized in that: The outer peripheral wall includes four side plates of the same length, so that the outer peripheral wall is formed into a square shape.

3. The energy-gathering ring according to claim 1 or 2, characterized in that: The circumferential width of the straight plate is 15-20 mm.

4. The energy-gathering ring according to claim 3, characterized in that: The circumferential width of the straight plate is 16.5 mm.

5. The energy-gathering ring according to claim 1, characterized in that: The lower edge of the outer peripheral wall has a flow guiding surface inclined toward the center and downward of the energy focusing ring.

6. The energy-gathering ring according to claim 1, characterized in that: The outer peripheral wall and the inner peripheral wall are connected via an arc surface.

7. The energy-gathering ring according to claim 1, characterized in that: The inner peripheral side of the inner peripheral wall is provided with a groove which is recessed downwards.

8. The energy-gathering ring according to claim 7, characterized in that: The inner peripheral wall is provided with a flange extending downward on the inner peripheral side of the groove.

9. A pot support, characterized in that: It comprises the energy gathering ring as claimed in any one of claims 1 to 8.

10. A cooking appliance, characterized in that: It comprises a burner and a pot support as claimed in claim 9, wherein the burner is located at the center of the pot support.

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