Pot support and stove

Abstract

The utility model relates to the field of kitchen utensils, and particularly discloses a pot support and a kitchen range. The energy gathering ring comprises an inner peripheral wall and an outer peripheral wall, the cross section of the inner peripheral wall is in a straight plate shape, and the cross section of the outer peripheral wall is in an arc shape protruding towards the outer peripheral side of the energy gathering ring. And the inclination angle of the inner peripheral wall relative to the vertical direction is not more than 20 degrees. The pot support is provided with the inner peripheral wall extending in the roughly vertical direction and the arc-shaped outer peripheral wall, so that a vortex area is formed near the roughly vertical inner peripheral wall on the inner side, the energy gathering effect is improved, and the effect of preheating secondary air in advance is achieved.

Description

Technical Field

[0001] The utility model relates to the field of kitchen utensils, in particular to a pot support and a stove. Background Art

[0002] Gas stoves refer to kitchen appliances that use liquefied petroleum gas, artificial coal gas, natural gas and other gas fuels for direct fire heating. The pot support on the traditional gas stove mainly plays the role of supporting the pot, and does not have the function of gathering energy and preventing heat from dissipating. As the gas and gas appliance industry has entered a period of rapid development, the safety measures of household gas stoves have been continuously strengthened, and the materials, functions and performance of the stoves have been improved. With the advocacy of energy conservation and environmental protection, the traditional pot support can no longer meet the needs of energy conservation, so the energy-gathering ring pot support (with energy-gathering ring) came into being.

[0003] Although a large number of energy-gathering ring pot brackets have appeared in the prior art, the energy-gathering effect of the energy-gathering ring pot brackets still has a lot of room for improvement.

[0004] The utility model is dedicated to improving the energy-gathering effect of the energy-gathering ring pot support to achieve the purpose of energy saving and environmental protection. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defect that the energy-gathering ring pot support in the prior art has a poor energy-gathering effect, and to provide a pot support and a stove with a better energy-gathering effect.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A pot support, comprising: a hollow energy-gathering ring;

[0008] The energy gathering ring comprises an inner peripheral wall and an outer peripheral wall, the cross section of the inner peripheral wall is a straight plate shape, and the cross section of the outer peripheral wall is an arc shape convex toward the outer peripheral side of the energy gathering ring;

[0009] The inclination angle of the inner peripheral wall relative to the vertical direction does not exceed 20°.

[0010] In the present embodiment, the pot support has an inner circumferential wall extending in a generally vertical direction (the inclination angle of the inner circumferential wall relative to the vertical direction does not exceed 20°) and an arc-shaped outer circumferential wall, so that the high-temperature flue gas generated by the combustion of the burner on the inner circumferential side of the pot support, when passing through the generally vertical inner circumferential wall on the inner side, will form a vortex zone near the generally vertical inner circumferential wall on the inner side due to the sudden change and turning of the cross-sectional area of ​​the fluid. On the one hand, this vortex zone can increase the residence time of high-temperature flue gas and enhance the heat exchange with the bottom of the pot; on the other hand, it is conducive to providing kinetic energy for the supplement of secondary air, enhancing the mixing of secondary air and high-temperature flue gas, and improving the combustion efficiency; at the same time, the outer peripheral wall is an arc convex to the outer peripheral side, so as to form an expansion section in the middle section of the energy gathering circle. In the expansion section, the high-temperature flue gas will expand and increase the pressure, improve the convection heat exchange coefficient with the bottom of the pot, and improve the heat exchange effect with the bottom of the pot. A small part of the high-temperature flue gas flowing out along the inner peripheral wall will flow downward along the upper arc surface of the outer peripheral wall, and bypass the lower arc surface of the outer peripheral wall together with the secondary air to supplement the inner combustion space; at this time, a small part of the high-temperature flue gas can be mixed with the secondary air and preheat the secondary air in advance. The lower arc surface is conducive to reducing the resistance of secondary air supplementation, and at the same time, the inner peripheral wall, which is roughly vertical, is conducive to the secondary air bypassing the arc surface and directly rising to the vortex zone on the inner wall, mixing with the incompletely burned high-temperature flue gas to improve the combustion efficiency. In addition, compared with other shapes of inner circumferential walls such as arc-shaped ones, the straight plate-shaped inner circumferential wall can minimize the area of ​​the part close to the burner, thereby reducing the heat absorbed by the energy focusing ring and reducing the heat loss of the burner.

[0011] Preferably, the inclination angle of the inner peripheral wall relative to the vertical direction is equal to 0°.

[0012] In this solution, when the inclination angle of the inner peripheral wall relative to the vertical direction is equal to 0°, the inner peripheral wall is a vertical surface, which makes it easier to process and assemble the pot support. At the same time, the inner peripheral wall is a vertical surface, which minimizes the area of ​​the pot support in the horizontal direction, making the pot support more clean. Furthermore, the secondary air that enters along the outer peripheral wall and bypasses the outer curved surface directly goes vertically upward, with minimal resistance, and the secondary air can be better replenished, so that the burner burns more fully and the combustion efficiency is better.

[0013] Preferably, the maximum width between the inner peripheral wall and the outer peripheral wall is greater than or equal to 15 mm.

[0014] In this solution, after testing, when the width of the expansion section is greater than or equal to 15mm, the effect of pressure expansion will be more obvious. After the high-temperature smoke is discharged from the smoke exhaust port, due to the expansion section formed on the peripheral wall, when the pot is placed on the pot support, the bottom surface of the pot and the upper part of the peripheral wall form an outward expansion shape, thereby forming a pressure expansion effect on the high-temperature smoke discharged from the smoke exhaust port, slowing down the discharge speed of the high-temperature smoke, so that the high-temperature smoke can stay at the bottom of the pot for a longer period of time, increasing the temperature of the pot bottom, and ultimately improving the thermal efficiency of the stove.

[0015] Preferably, the cross section of the outer peripheral wall is arc-shaped.

[0016] In this solution, if the cross-section of the outer wall is an arc shape, it can ensure that the expansion section is located at the vertical center of the energy focusing ring, so that the vertical center of the energy focusing ring is the widest, and the upper arc surface and the lower arc surface are equal in length, thereby improving the energy focusing and lifting effect brought by the expansion section.

[0017] Preferably, the angle between the line connecting the farthest point of the outer peripheral wall from the inner peripheral wall and the vertex of the energy gathering ring relative to the horizontal direction is 35°-65°.

[0018] In this scheme, after testing, the effect of pressure expansion is more obvious when the angle is within the range of 35°-65°. After the high-temperature smoke is discharged from the smoke exhaust port, due to the expansion section formed on the peripheral wall, when the pot is placed on the pot support, the bottom surface of the pot and the upper part of the peripheral wall form an outward expansion shape, thereby forming a pressure expansion effect on the high-temperature smoke discharged from the smoke exhaust port, slowing down the discharge speed of the high-temperature smoke, so that the high-temperature smoke can stay at the bottom of the pot for a longer period of time, increasing the temperature of the pot bottom, and ultimately improving the thermal efficiency of the stove.

[0019] Preferably, the inner peripheral wall and the outer peripheral wall are smoothly connected.

[0020] In this solution, the inner peripheral wall and the outer peripheral wall are smoothly connected, which can facilitate the overflow to flow down without cleaning dead corners.

[0021] Preferably, the inner peripheral wall and the outer peripheral wall are connected to each other via an arc-shaped connecting portion.

[0022] In this solution, the inner peripheral wall and the outer peripheral wall are connected to each other through an arc-shaped connecting portion, and the high-temperature flue gas on the inner peripheral side of the pot support is more likely to flow downward along the arc-shaped connecting portion and adhere to the wall, thereby mixing with the secondary air and preheating the secondary air in advance.

[0023] Preferably, the wall thickness of the energy focusing ring is 0.5-1.0 mm.

[0024] In this solution, the energy-gathering ring has a thin wall thickness and a small heat capacity, and will not absorb much heat itself, thereby increasing the heating speed of the cookware.

[0025] Preferably, the pot support further comprises a C-shaped angle piece, and the C-shaped angle piece covers the energy gathering ring from the outer peripheral side.

[0026] In this solution, a C-shaped corner piece is used. The C-shaped corner piece covers the energy gathering ring from the outer peripheral side to avoid contact with the inner side of the energy gathering ring, thereby exporting heat to the external air and avoiding interference with the eddy current zone on the inner peripheral side to the greatest extent.

[0027] A cooking appliance comprises the pot support as described above.

[0028] In the present embodiment, the pot support of the stove has an inner peripheral wall extending in a substantially vertical direction and an arc-shaped outer peripheral wall, so that the high-temperature flue gas generated by the burner on the inner peripheral side of the pot support will form a vortex zone near the substantially vertical inner peripheral wall when passing through the substantially vertical inner peripheral wall due to the sudden change and turning of the cross-sectional area of ​​the fluid. On the one hand, this vortex zone can increase the residence time of high-temperature flue gas and enhance the heat exchange with the bottom of the pot; on the other hand, it is conducive to providing kinetic energy for the supplement of secondary air, enhancing the mixing of secondary air and high-temperature flue gas, and improving the combustion efficiency; at the same time, the outer peripheral wall is an arc convex to the outer peripheral side, so as to form an expansion section in the middle section of the energy gathering circle. In the expansion section, the high-temperature flue gas will expand and increase the pressure, improve the convection heat exchange coefficient with the bottom of the pot, and improve the heat exchange effect with the bottom of the pot. A small part of the high-temperature flue gas flowing out along the inner peripheral wall will flow downward along the upper arc surface of the outer peripheral wall, and bypass the lower arc surface of the outer peripheral wall together with the secondary air to supplement the inner combustion space; at this time, a small part of the high-temperature flue gas can be mixed with the secondary air and preheat the secondary air in advance. The lower arc surface is conducive to reducing the resistance of secondary air supplementation, and at the same time, the inner peripheral wall, which is roughly vertical, is conducive to the secondary air bypassing the arc surface and directly rising to the vortex zone on the inner wall, mixing with the incompletely burned high-temperature flue gas to improve the combustion efficiency. In addition, compared with other shapes of inner circumferential walls such as arc-shaped ones, the straight plate-shaped inner circumferential wall can minimize the area of ​​the part close to the burner, thereby reducing the heat absorbed by the energy focusing ring and reducing the heat loss of the burner.

[0029] Preferably, the stove further comprises a burner, the burner having an outer ring fire cover, and the extension line of the central axis of the outer ring main fire hole of the outer ring fire cover is higher than the vertex of the energy gathering ring;

[0030] The dimensions of the stove satisfy the following formula:

[0031] (1) φ1=(1.5~2) φ2;

[0032] Among them, the inner diameter of the top of the energy gathering ring is φ1, and the outer diameter of the outer ring fire cover is φ2.

[0033] In this solution, the stove has the above dimensions, which can make the entire burner have enough combustion space, and the annular cavity of the energy-gathering ring will not affect the combustion while preventing heat dissipation. Through experiments, it is found that if the diameter of φ1 is greater than the upper limit, the energy-gathering effect will be significantly reduced, and if it is less than the lower limit, it will affect normal combustion, resulting in incomplete combustion and excessive CO.

[0034] Preferably, the stove further comprises a burner and a liquid receiving pan, wherein the burner has an outer ring fire cover;

[0035] The dimensions of the stove satisfy the following formula:

[0036] (2) H4 = 0.3-0.4H2;

[0037] (3) H2 = (0.8-1.2) (H1 + H3);

[0038] (4) H1 ≥ 10 mm;

[0039] Among them, H1 is the height of the smoke exhaust port of the stove; H2 is the height of the energy gathering ring; H3 is the height of the bottom surface of the energy gathering ring relative to the upper surface of the liquid receiving tray; H4 is the height from the center of the outer ring main fire hole of the outer ring fire cover to the top of the energy gathering ring.

[0040] In this solution, the stove has the above dimensions to ensure smooth smoke exhaust, sufficient secondary air supply, and the best heat collection effect. If the height of the annular cavity of the energy collection ring is too high, it will inevitably compress the height of the smoke exhaust port or the area of ​​secondary air supply, affecting combustion; if the height of the annular cavity of the energy collection ring is too low, the energy collection effect will not be good.

[0041] The positive progressive effect of the utility model is that the pot support has an inner peripheral wall extending in a substantially vertical direction and an arc-shaped outer peripheral wall, so that when the high-temperature flue gas generated by the burner on the inner peripheral side of the pot support passes through the substantially vertical inner peripheral wall, a vortex zone will be formed near the substantially vertical inner peripheral wall due to the sudden change and turning of the cross-sectional area of ​​the fluid. On the one hand, this vortex zone can increase the residence time of high-temperature flue gas and enhance the heat exchange with the bottom of the pot; on the other hand, it is conducive to providing kinetic energy for the supplement of secondary air, enhancing the mixing of secondary air and high-temperature flue gas, and improving the combustion efficiency; at the same time, the outer peripheral wall is an arc convex to the outer peripheral side, so as to form an expansion section in the middle section of the energy gathering circle. In the expansion section, the high-temperature flue gas will expand and increase the pressure, improve the convection heat exchange coefficient with the bottom of the pot, and improve the heat exchange effect with the bottom of the pot. A small part of the high-temperature flue gas flowing out along the inner peripheral wall will flow downward along the upper arc surface of the outer peripheral wall, and bypass the lower arc surface of the outer peripheral wall together with the secondary air to supplement the inner combustion space; at this time, a small part of the high-temperature flue gas can be mixed with the secondary air and preheat the secondary air in advance. The lower arc surface is conducive to reducing the resistance of secondary air supplementation, and at the same time, the inner peripheral wall, which is roughly vertical, is conducive to the secondary air bypassing the arc surface and directly rising to the vortex zone on the inner wall, mixing with the incompletely burned high-temperature flue gas to improve the combustion efficiency. The stove with the pot support has the same effect as above. In addition, compared with other forms of inner peripheral walls such as arc-shaped ones, the straight plate-shaped inner peripheral wall can reduce the area of ​​the part close to the burner as much as possible, thereby reducing the heat absorbed by the energy-gathering ring and reducing the heat loss of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a pot support according to an embodiment of the present utility model.

[0043] Figure 2 The figure is a schematic top view of the structure of a pot support according to an embodiment of the utility model.

[0044] Figure 3 The figure is a schematic side view of the pot support according to an embodiment of the present invention.

[0045] Figure 4 It is a schematic diagram of the cross-sectional structure of a pot support according to an embodiment of the utility model.

[0046] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.

[0047] Figure 6 It is a schematic side view of the corner piece according to an embodiment of the utility model.

[0048] Figure 7 It is a schematic diagram of the three-dimensional structure of a cooker according to an embodiment of the utility model.

[0049] Figure 8 It is a partial cross-sectional structural schematic diagram of a cooker according to an embodiment of the utility model.

[0050] Description of reference numerals:

[0051] Pot support 100

[0052] Energy Circle 110

[0053] Inner wall 111

[0054] Outer wall 112

[0055] Arc-shaped connecting portion 113

[0056] Annular cavity 114

[0057] Expansion section 115

[0058] Eddy Zone 116

[0059] Corner piece 120

[0060] Upper support portion 121

[0061] Horizontal part 1211

[0062] Inclined portion 1212

[0063] Intermediate connecting portion 122

[0064] Lower leg 123

[0065] Cooker 200

[0066] Burner 210

[0067] Outer ring fire cover 211

[0068] Outer ring main fire hole 212

[0069] Liquid tray 220 DETAILED DESCRIPTION

[0070] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0071] like Figure 1-6 This embodiment provides a pot support 100. The pot support 100 includes: a hollow energy-gathering ring 110, and an annular cavity 114 is inside the energy-gathering ring 110.

[0072] The energy focusing ring 110 includes an inner circumferential wall 111 and an outer circumferential wall 112. The cross-section of the inner circumferential wall 111 is a straight plate, and the cross-section of the outer circumferential wall 112 is an arc convex toward the outer peripheral side of the energy focusing ring 110; the inclination angle of the inner circumferential wall 111 relative to the vertical direction does not exceed 20°, and it is formed to extend along a roughly vertical direction.

[0073] See also Figure 4 The vertical axis V1 in is parallel to the vertical direction. Figure 4 The horizontal axis V2 in FIG. 1 is a horizontal line passing through the center of the energy-gathering ring 110 in the vertical direction and is parallel to the horizontal direction. The vertical direction and the horizontal direction in this article are both referenced to the placement position of the pot support 100 during normal use.

[0074] See below Figure 5 , illustrating the effect of the pot support 100.

[0075] The pot support 100 has an inner peripheral wall 111 extending in a substantially vertical direction and an arc-shaped outer peripheral wall 112, so that the high-temperature flue gas generated by the burner 210 on the inner peripheral side of the pot support 100 will form a vortex zone 116 near the substantially vertical inner peripheral wall 111 due to the sudden change and turning of the fluid cross-sectional area when passing through the substantially vertical inner peripheral wall 111. This vortex zone 116 can increase the residence time of the high-temperature flue gas and enhance the heat exchange with the pot bottom on the one hand; on the other hand, it is beneficial to provide kinetic energy for the supplement of secondary air, enhance the mixing of secondary air and high-temperature flue gas, and improve the combustion efficiency; at the same time, the outer peripheral wall 112 is an arc convex to the outer peripheral side, so as to form an expansion section 115 in the middle section of the energy gathering ring 110. In the expansion section 115, the high-temperature flue gas will expand and increase the pressure, thereby increasing the convective heat transfer coefficient with the pot bottom and improving the heat exchange effect with the pot bottom. A small part of the high-temperature flue gas ( Figure 4 The solid arrows in the figure indicate that the high-temperature flue gas flows downward along the upper curved surface of the outer peripheral wall 112 and flows with the secondary air ( Figure 4 The dotted arrow in the figure indicates that the secondary air) bypasses the lower arc surface of the outer wall 112 to be supplemented into the inner combustion space; at this time, a small amount of high-temperature flue gas can be mixed with the secondary air to preheat the secondary air in advance. The lower arc surface is conducive to reducing the resistance of secondary air supplementation. At the same time, the inner wall 111, which is roughly vertical on the inside, is conducive to the secondary air bypassing the arc surface and rising directly to the vortex zone 116 on the inner wall surface, and mixing with the incompletely burned high-temperature flue gas to improve combustion efficiency. In addition, compared with other forms of inner walls such as arcs, the straight plate-shaped inner wall 111 can minimize the area close to the burner, thereby reducing the heat absorbed by the energy focusing ring 110 and reducing the heat loss of the burner.

[0076] Furthermore, the pot support 100 forms a roughly vertical flat shape, which reduces the residue of overflow on the pot support 100 and facilitates the cleaning of the pot support 100. At the same time, the vertical energy focusing ring 110 can increase the residence time of high-temperature flue gas and prevent heat from dissipating outward, thereby improving thermal efficiency.

[0077] The figure of this embodiment only illustrates the situation that the inner circumferential wall 111 extends in the vertical direction, that is, the inclination angle of the inner circumferential wall 111 relative to the vertical direction is equal to 0°. The inner circumferential wall 111 being a vertical surface makes it more convenient to process and assemble the pot support 100. At the same time, the inner circumferential wall 111 being a vertical surface minimizes the area of ​​the pot support 100 in the horizontal direction, making the pot support 100 more clean. Furthermore, the secondary air that enters along the outer circumferential wall 112 and bypasses the outer curved surface directly goes vertically upward with minimal resistance, and the secondary air can be better replenished, making the burner burn more fully and the combustion efficiency better. However, the utility model is not limited to this. The inner circumferential wall 111 can be inclined relative to the vertical direction, but the inclination angle is preferably not more than 20°, and the inclination angle exceeding 20° (inward) is preferably not more than 20°. Figure 4 The center line INL1 shows the inner wall 111 tilted inwards, which will significantly increase the resistance of smoke exhaust, resulting in unsmooth smoke exhaust and unfavorable for secondary air replenishment; if it is tilted outwards by more than 20° ( Figure 4 The center line INL2 indicates the situation where the inner peripheral wall 111 is inclined outwards), and it is difficult for the high-temperature flue gas to form an obvious eddy zone 116 at the inclined surface, thereby reducing the eddy effect.

[0078] The maximum width W between the inner peripheral wall 111 and the outer peripheral wall 112 is greater than or equal to 15 mm.

[0079] After testing, when the width of the expansion section 115 is greater than or equal to 15 mm, the effect of pressure expansion will be more obvious. After the high-temperature smoke is discharged from the smoke exhaust port, due to the expansion section 115 formed on the peripheral wall 112, when the pot is placed on the pot support 100, the bottom surface of the pot and the upper part of the peripheral wall 112 form an outward expansion shape, thereby forming a pressure expansion effect on the high-temperature smoke discharged from the smoke exhaust port, slowing down the discharge speed of the high-temperature smoke, so that the high-temperature smoke can stay at the bottom of the pot for a longer period of time, increasing the temperature of the pot bottom, and ultimately improving the thermal efficiency of the stove.

[0080] The cross section of the peripheral wall 112 is in an arc shape. If the cross section of the peripheral wall 112 is in an arc shape, it can ensure that the expansion section 115 is located at the center of the energy focusing ring 110 in the vertical direction, so that the center of the energy focusing ring 110 in the vertical direction is the widest, and the upper arc surface and the lower arc surface are of equal length, thereby improving the energy focusing and lifting effect brought by the expansion section 115.

[0081] The arc shape here means that its shape is a part of a complete circle.

[0082] Optionally, the cross-section of the outer peripheral wall 112 may not be an arc shape, but a smooth arc shape composed of multiple arcs with different curvatures, which can also achieve the above-mentioned effect of improving combustion efficiency.

[0083] Alternatively, the arc shape of the cross section of the outer peripheral wall 112 may also be formed into an asymmetric shape relative to the center of the energy focusing ring 110 in the vertical direction.

[0084] Alternatively, the arcuate shape of the cross section of the outer peripheral wall 112 may also be formed so that the widest portion of the annular cavity 114 of the energy focusing ring 110 is not located at the center of the energy focusing ring 110 in the vertical direction.

[0085] Preferably, the angle α between the line connecting the farthest point of the outer peripheral wall 112 from the inner peripheral wall 111 and the vertex of the energy focusing ring 110 relative to the horizontal direction is 35°-65°.

[0086] After testing, it is found that when the angle α is within the range of 35°-65°, the effect of pressure expansion is more obvious. After the high-temperature smoke is discharged from the smoke outlet, due to the expansion section 115 formed on the peripheral wall 112, when the pot is placed on the pot support 100, the bottom surface of the pot and the upper part of the peripheral wall 112 form an outward expansion shape, thereby forming a pressure expansion effect on the high-temperature smoke discharged from the smoke outlet, slowing down the discharge speed of the high-temperature smoke, so that the high-temperature smoke can stay at the bottom of the pot for a longer period of time, increasing the temperature of the pot bottom, and ultimately improving the thermal efficiency of the stove.

[0087] The inner peripheral wall 111 and the outer peripheral wall 112 are smoothly connected, which is conducive to the overflow flowing down without cleaning dead corners.

[0088] The inner peripheral wall 111 and the outer peripheral wall 112 are connected to each other through the arc-shaped connecting portion 113. The high-temperature flue gas on the inner peripheral side of the pot support 100 is more likely to flow downward along the arc-shaped connecting portion 113, thereby mixing with the secondary air and preheating the secondary air in advance.

[0089] The wall thickness of the energy-gathering ring 110 is preferably 0.5-1.0 mm. The wall thickness of the energy-gathering ring 110 is relatively thin, the heat capacity is small, and it does not absorb much heat itself, which can increase the heating speed of the cookware.

[0090] The pot support 100 further includes a C-shaped angle piece 120 , and the C-shaped angle piece 120 covers the energy gathering ring 110 from the outer peripheral side.

[0091] A C-shaped corner piece 120 is used, which covers the energy focusing ring 110 from the outer peripheral side to avoid contact with the inner side of the energy focusing ring 110, conducts heat to the external air, and also avoids interference with the inner peripheral side eddy flow zone 116 to the greatest extent.

[0092] The C-shaped angle piece 120 includes an upper support portion 121, an intermediate connection portion 122, and a lower support leg 123. The upper support portion 121 is used to support the pot, and includes a horizontal portion 1211 and an inclined portion 1212 extending from the horizontal portion 1211 and located on the inner peripheral side of the horizontal portion 1211. One end of the intermediate connection portion 122 is connected to one end of the outer peripheral side of the upper support portion 121, and the other end of the intermediate connection portion 122 is connected to one end of the outer peripheral side of the lower support leg 123.

[0093] The energy focusing ring 110 is inserted into the C-shaped angle piece 120 , and the outer peripheral wall 112 and the arc-shaped connecting portion 113 of the energy focusing ring 110 abut against the C-shaped angle piece 120 and are welded to each other.

[0094] Alternatively, the pot support 100 may use other forms of corner pieces 120 to support the pot.

[0095] like Figure 7-8 As shown, this embodiment further provides a stove 200, which includes the above pot support 100.

[0096] The stove 200 may be a typical gas stove, liquefied gas stove or the like that can generate an open flame.

[0097] The pot support 100 of the stove 200 has an inner peripheral wall 111 extending in a substantially vertical direction and an arc-shaped outer peripheral wall 112, so that when the high-temperature flue gas generated by the burner 210 on the inner peripheral side of the pot support 100 passes through the substantially vertical inner peripheral wall 111, a vortex area 116 will be formed near the substantially vertical inner peripheral wall 111 due to the sudden change and turning of the cross-sectional area of ​​the fluid. On the one hand, this vortex zone 116 can increase the residence time of the high-temperature flue gas and enhance the heat exchange with the bottom of the pot; on the other hand, it is beneficial to provide kinetic energy for the supplement of secondary air, enhance the mixing of secondary air and high-temperature flue gas, and improve combustion efficiency; at the same time, the outer wall 112 is an arc-shaped arc convex to the outer side, thereby forming an expansion section 115 in the middle section of the energy gathering circle 110. In the expansion section 115, the high-temperature flue gas will expand and increase the pressure, thereby increasing the convective heat transfer coefficient with the bottom of the pot and improving the heat exchange effect with the bottom of the pot. A small amount of the high-temperature flue gas flowing out along the inner wall 111 will flow downward along the upper arc surface of the outer wall 112, and together with the secondary air, bypass the lower arc surface of the outer wall 112 to supplement the inner combustion space; at this time, a small amount of the high-temperature flue gas can be mixed with the secondary air to preheat the secondary air in advance. The lower curved surface is conducive to reducing the resistance of secondary air replenishment, and the substantially vertical inner peripheral wall 111 inside is conducive to the secondary air bypassing the curved surface and rising directly to the inner wall surface vortex zone 116, and mixing with the incompletely burned high-temperature flue gas to improve the combustion efficiency. In addition, compared with other forms of inner peripheral walls such as curved shapes, the straight plate-shaped inner peripheral wall 111 can minimize the area close to the burner, thereby reducing the heat absorbed by the energy-gathering ring 110 and reducing the heat loss of the burner.

[0098] The cooker 200 further includes a burner 210 and a drip pan 220. The pot support 100 is disposed on the outer peripheral side of the burner 210 and is placed on the drip pan 220.

[0099] The burner 210 has an outer ring fire cover 211 , and the central axis extension line INS of the outer ring main fire hole 212 of the outer ring fire cover 211 is higher than the apex of the energy gathering ring 110 .

[0100] Preferably, the size of the cooker 200 satisfies the following formula:

[0101] (1) φ1=(1.5~2) φ2;

[0102] The inner diameter of the top of the energy focusing ring 110 is φ1, and the outer diameter of the outer ring fire cover 211 is φ2.

[0103] The cooker 200 has the above-mentioned dimensions, so that the entire burner 210 has sufficient combustion space, and the annular cavity 114 of the energy-gathering ring 110 will not affect combustion while preventing heat dissipation. Through experiments, it is found that if the diameter of φ1 is greater than the upper limit, the energy-gathering effect will be significantly reduced, and if it is less than the lower limit, it will affect normal combustion, resulting in incomplete combustion and excessive CO.

[0104] Preferably, the size of the cooker 200 satisfies the following formula:

[0105] (2) H4 = 0.3-0.4H2;

[0106] (3) H2 = (0.8-1.2) (H1 + H3);

[0107] (4) H1 ≥ 10 mm;

[0108] Among them, H1 is the height of the smoke exhaust port of the stove 200; H2 is the height of the energy gathering ring 110; H3 is the height of the bottom surface of the energy gathering ring 110 relative to the upper surface of the liquid receiving tray 220 (secondary air replenishment height); H4 is the height of the center of the outer ring main fire hole 212 of the outer ring fire cover 211 from the top of the energy gathering ring 110. The height of the smoke exhaust port is the height between the upper surface of the corner piece 120 for placing the pot (the horizontal part 1211 of the upper support part 121) and the vertex of the energy gathering ring 110. The height of the smoke exhaust port here refers to the height between the vertex of the energy gathering ring 110 and the vertex of the corner piece supporting the bottom surface of the pot. The smoke exhaust port refers to the high-temperature smoke exhaust channel between the energy gathering ring and the bottom of the pot.

[0109] The above dimensions of the cooker 200 can ensure smooth smoke exhaust, sufficient secondary air supply, and optimal heat collection effect. If the height of the annular cavity 114 of the energy collection ring 110 is too high, it will inevitably compress the height of the smoke exhaust port or the area of ​​secondary air supply, affecting combustion; if the height of the annular cavity 114 of the energy collection ring 110 is too low, the energy collection effect is not good.

[0110] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or component in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation on the present invention in this regard.

[0111] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A pot support, characterized in that: It includes: Hollow energy-gathering ring; The energy gathering ring comprises an inner peripheral wall and an outer peripheral wall, the cross section of the inner peripheral wall is a straight plate shape, and the cross section of the outer peripheral wall is an arc shape convex toward the outer peripheral side of the energy gathering ring; The inclination angle of the inner peripheral wall relative to the vertical direction does not exceed 20°.

2. The pot support according to claim 1, characterized in that: The inclination angle of the inner peripheral wall relative to the vertical direction is equal to 0°.

3. The pot support according to claim 1, characterized in that: The maximum width between the inner peripheral wall and the outer peripheral wall is greater than or equal to 15 mm.

4. The pot support according to claim 1, characterized in that: The cross section of the outer peripheral wall is in an arc shape.

5. The pot support according to claim 1, characterized in that: The angle between the line connecting the farthest point of the outer peripheral wall from the inner peripheral wall and the vertex of the energy gathering ring relative to the horizontal direction is 35°-65°.

6. The pot support according to claim 1, characterized in that: The inner peripheral wall and the outer peripheral wall are smoothly connected.

7. The pot support according to claim 6, characterized in that: The inner peripheral wall and the outer peripheral wall are connected to each other through an arc-shaped connecting portion.

8. The pot support according to claim 1, characterized in that: The wall thickness of the energy gathering ring is 0.5-1.0 mm.

9. The pot support according to claim 1, characterized in that: The pot support also includes a C-shaped angle piece, and the C-shaped angle piece covers the energy gathering ring from the outer peripheral side.

10. A cooking appliance, characterized in that: It comprises the pot support as claimed in any one of claims 1 to 9.

11. The cooker according to claim 10, characterized in that: The stove also includes a burner, the burner having an outer ring fire cover, the extension line of the central axis of the outer ring main fire hole of the outer ring fire cover is higher than the vertex of the energy gathering ring; The size of the stove satisfies the following formula: (1) φ1=(1.5~2) φ2; Among them, the inner diameter of the top of the energy gathering ring is φ1, and the outer diameter of the outer ring fire cover is φ2.

12. The cooker according to claim 10, characterized in that: The stove also includes a burner and a liquid tray, wherein the burner has an outer ring fire cover; The size of the stove satisfies the following formula: (2) H4 = 0.3-0.4H2; (3) H2 = (0.8-1.2) (H1 + H3); (4) H1 ≥ 10 mm; Among them, H1 is the height of the smoke exhaust port of the stove; H2 is the height of the energy gathering ring; H3 is the height of the bottom surface of the energy gathering ring relative to the upper surface of the liquid receiving tray; H4 is the height from the center of the outer ring main fire hole of the outer ring fire cover to the top of the energy gathering ring.

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