Pot support for gas stove and gas stove

Abstract

The present invention provides a pot support for a gas stove and a gas stove, which relate to the technical field of gas stoves. The pot support for a gas stove comprises an upper plate and a lower plate, wherein the upper plate and the lower plate enclose a preheating cavity; the preheating cavity connects the burner with the external environment; the upper plate is an annular plate, and the upper surface of the upper plate is a concave arc surface with a low annular inner hole edge and a high annular outer edge, and the concave arc surface is recessed along the direction of the preheating cavity to form a plurality of grooves. The gas stove comprises a pot support for a gas stove. This at least alleviates the technical problem in the prior art that the high-temperature combustion flue gas flows too fast within the energy-gathering plate, thereby weakening the heat energy exchange intensity between the high-temperature flue gas and the bottom of the pot, resulting in large heat loss, thereby achieving the technical effect of reducing heat loss.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, in particular to a pot support for gas stoves and a gas stove. Background Art

[0002] Gas stoves are essential kitchen appliances for everyday household cooking. To achieve higher combustion thermal efficiency, some gas stoves utilize a pot holder with a concentrating plate. These plates can be single-layer, double-layer, or multi-layer. This plate separates the secondary air required for combustion from the high-temperature flue gases, concentrating them within the plate. This enhances heat exchange between the flue gases and the pot bottom, reduces heat loss through radiation and convection, and effectively concentrates heat energy.

[0003] However, existing gas stoves mainly have the following problems: the structural shape design of the pot support with an energy-gathering plate of some gas stoves takes the emission speed of the flue gas too much into consideration, that is, the flow speed of the high-temperature flue gas from the combustion in the energy-gathering plate is too fast, thereby weakening the heat exchange intensity between the high-temperature flue gas and the bottom of the pot, resulting in large heat loss; some cannot fully utilize the combustion heat energy to preheat the secondary air required for combustion, and the heat energy utilization rate is also low; some also utilize the combustion heat energy to preheat the secondary air required for combustion, but the secondary air required for the combustion of the outer ring fire and the inner ring fire is not preheated in the same preheating cavity area, resulting in different temperatures, resulting in uneven combustion temperatures of the outer ring fire and the inner ring fire, which affects the overall combustion effect and the combustion thermal efficiency is not high. Summary of the Invention

[0004] The purpose of the present invention is to provide a pot support and a gas stove for a gas stove, so as to alleviate the technical problem in the prior art that the high-temperature flue gas from combustion flows too fast in the energy-gathering plate, thereby weakening the heat energy exchange intensity between the high-temperature flue gas and the bottom of the pot, resulting in large heat loss.

[0005] In a first aspect, the present invention provides a pot support for a gas cooker, comprising: an upper plate and a lower plate, wherein the upper plate and the lower plate enclose a preheating cavity;

[0006] The preheating cavity is in communication with the burner and the external environment;

[0007] The upper disk is an annular disk, and the upper surface of the upper disk is a concave arc surface with a low annular inner hole edge and a high annular outer edge. The concave arc surface is recessed along the direction of the preheating cavity to form a plurality of grooves.

[0008] Furthermore, each of the grooves extends along the width direction or radial direction of the concave arc surface, and a plurality of the grooves are evenly spaced along the circumference of the concave arc surface.

[0009] Furthermore, the lower disk is a concave annular disk having an annular lower concave cavity;

[0010] An air inlet hole is provided on the side of the lower disk away from the burner, and the air inlet hole connects the preheating cavity with the external environment.

[0011] Furthermore, a first air inlet and a second air inlet are provided on a side of the lower disk close to the burner, and the first air inlet and the second air inlet are staggered in vertical arrangement;

[0012] The first air inlet is disposed toward the outer ring of the burner, and the second air inlet is disposed toward the inner ring of the burner.

[0013] Furthermore, a first louver is provided at the lower edge of the first air inlet for directing air upward and toward the outer ring of the burner;

[0014] A second louver is provided at the upper edge of each of the second air inlets for directing air downward and toward the inner ring of the burner.

[0015] Furthermore, a middle partition is provided in the preheating cavity, and the middle partition divides the preheating cavity into a secondary air preheating cavity and a thermal insulation cavity;

[0016] The secondary air preheating chamber is connected to the burner and the external environment;

[0017] The heat-insulating cavity is sealed and located below the secondary air preheating cavity, and is used to provide heat-insulating effects.

[0018] Furthermore, the middle partition layer adopts an annular plate structure, and the middle partition layer is arranged to be gradually inclined upward from the annular inner hole to the annular outer edge.

[0019] Furthermore, a gap is left between the middle partition layer and the bottom of the groove.

[0020] Furthermore, the preheating cavity is a rectangular annular cavity, a circular annular cavity, a polygonal annular cavity or an elliptical annular cavity.

[0021] Furthermore, the bottom end of the lower plate is recessed downward to form a concave platform, and the concave platform is used to abut against the liquid receiving tray or the stove panel.

[0022] Furthermore, the concave platform is arranged in a circle at the bottom end of the lower disk and is arranged close to the outer circle of the lower disk.

[0023] Furthermore, an elastic sealing member is provided at the bottom end of the recessed platform.

[0024] Beneficial effects:

[0025] The pot support for a gas cooker provided by the present invention comprises an upper plate and a lower plate which are arranged to form a preheating cavity; the preheating cavity connects the burner with the external environment, so that air from the external environment can enter the burner through the preheating cavity and participate in the combustion; in this process, since the upper surface of the upper plate is a concave arc surface with a low annular inner hole edge and a high annular outer edge, the concave arc surface is recessed along the direction of the preheating cavity to form a plurality of grooves. Such an arrangement not only increases the gathering volume of the combustion heat energy air mass, is beneficial to the gathering of the combustion heat energy air mass and can slow down the flow rate of the high-temperature flue gas, thereby prolonging the heat exchange time with the pot bottom, effectively improving the combustion thermal efficiency, but also enhances the rigidity of the upper plate.

[0026] The design of the grooves of the pot support for the gas cooker, when viewed from above in the preheating cavity, forms a plurality of downwardly protruding ribs, which can increase the heat exchange area, that is, increase the contact and heating area with the secondary air, which is conducive to sufficient preheating of the secondary air; because the upper disk is close to the flame of the outer ring of the burner, the temperature of the upper disk rises faster and higher, which makes the multiple grooves provided in the upper disk preheat the secondary air in the preheating cavity to a higher and more sufficient temperature. The preheated secondary air participates in combustion, which can make the flame temperature higher, thereby improving the thermal efficiency of combustion.

[0027] In a second aspect, the present invention provides a gas stove comprising: a burner and a pot support for a gas stove according to any one of the aforementioned embodiments;

[0028] The upper disk and the lower disk are both sleeved on the burner, and an annular air supply channel is formed between the lower disk and the burner.

[0029] Furthermore, the width of the air supply channel is gradually increased from top to bottom.

[0030] Beneficial effects:

[0031] The gas stove provided by the present invention includes the aforementioned pot support for gas stoves. Therefore, the technical advantages and effects achieved by the gas stove also include the technical advantages and effects achieved by the pot support for gas stoves, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic structural diagram of a pot support for a gas cooker provided in an embodiment of the present invention;

[0034] Figure 2 A top view of a pot support for a gas cooker provided in an embodiment of the present invention;

[0035] Figure 3 A longitudinal cross-sectional view of a pot support for a gas cooker provided in an embodiment of the present invention;

[0036] Figure 4 A bottom view of a pot support for a gas cooker provided in an embodiment of the present invention;

[0037] Figure 5 A schematic diagram of the placement of a pot support and a burner for a gas cooker provided by an embodiment of the present invention;

[0038] Figure 6 This is a cross-sectional view of the pot support and burner for a gas cooker provided by an embodiment of the present invention when placed, wherein the arrow indicates the flow path of secondary air.

[0039] icon:

[0040] 100-upper plate; 110-groove; 120-secondary air preheating chamber;

[0041] 200 - lower tray; 210 - air inlet; 220 - first air inlet; 230 - second air inlet; 240 - first louver; 250 - second louver; 260 - thermal insulation cavity; 270 - recessed platform; 280 - elastic sealing member;

[0042] 300-middle partition;

[0043] 400-pot support feet;

[0044] 500-liquid tray;

[0045] 600-burner. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0049] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] In addition, terms such as "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0052] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0053] Reference Figure 1 and Figure 2 The present embodiment provides a pot support for a gas cooker, which includes an upper plate 100 and a lower plate 200. The upper plate 100 and the lower plate 200 enclose a preheating cavity; the preheating cavity connects the burner 600 with the external environment; the upper plate 100 is an annular plate, and the upper surface of the upper plate 100 is a concave arc surface with a low annular inner edge and a high annular outer edge. The concave arc surface is concave along the direction of the preheating cavity to form a plurality of grooves 110.

[0054] The pot stand for a gas cooker provided in this embodiment comprises an upper plate 100 and a lower plate 200 which are arranged to form a preheating cavity; the preheating cavity connects the burner 600 with the external environment, so that air from the external environment can enter the burner 600 through the preheating cavity and participate in the combustion; in this process, since the upper surface of the upper plate 100 is a concave arc surface with a low annular inner hole edge and a high annular outer edge, the concave arc surface is recessed along the direction of the preheating cavity to form a plurality of grooves 110. This arrangement not only increases the gathering volume of the combustion heat energy air mass, is beneficial to the gathering of the combustion heat energy air mass and can slow down the flow rate of the high-temperature flue gas, thereby extending the heat exchange time with the pot bottom, effectively improving the combustion thermal efficiency, but also enhances the rigidity of the upper plate 100.

[0055] The design of the groove 110 of the pot support for the gas cooker is that, when viewed from above in the preheating cavity, its structure forms a plurality of downwardly protruding ribs, which can increase the heat exchange area, that is, increase the contact and heating area with the secondary air, which is conducive to sufficient preheating of the secondary air; since the upper plate 100 is close to the flame of the outer ring of the burner, the temperature of the upper plate 100 rises faster and higher, which makes the multiple grooves 110 provided on the upper plate 100 preheat the secondary air in the preheating cavity to a higher and more sufficient temperature. The preheated secondary air participates in combustion, which can make the flame temperature higher, thereby improving the thermal efficiency of combustion.

[0056] Specifically, the preheating cavity can be a single-cavity structure or a double-cavity structure. The preheating cavity connects the burner 600 with the external environment, and can be used as both a preheating cavity and a secondary air supply channel. Among them, the single-cavity structure can increase the volume of the preheating cavity relative to the double-cavity structure, so that the preheating effect is more sufficient and more uniform.

[0057] In this embodiment, each groove 110 extends along the width direction or radial direction of the concave arc surface, and the plurality of grooves 110 are evenly spaced along the circumference of the concave arc surface.

[0058] Reference Figure 1 The preheating cavity is a circular cavity. Specifically, each groove 110 extends outward in the radial direction of the concave arc surface, and the plurality of grooves 110 are evenly spaced along the circumferential direction of the concave arc surface.

[0059] In other embodiments, the preheating cavity can also be a rectangular annular cavity, a polygonal annular cavity or an elliptical annular cavity. In these structural forms, the arrangement of the groove 110 can refer to the circular annular cavity, and their functions are the same, which will not be repeated here.

[0060] It should be noted that the shape, number and position layout of the grooves 110 are not limited and can be set according to actual needs.

[0061] Further, refer to Figure 3The lower plate 200 is a concave annular plate with an annular lower concave cavity; an air inlet hole 210 is provided on the side of the lower plate 200 away from the burner 600, and the air inlet hole 210 connects the preheating cavity with the external environment; since the external air around the air inlet hole 210 can be heated by heat conduction or heat radiation during the use of the gas stove, the secondary air has been preheated to a certain extent before entering the preheating cavity, which not only improves the heat utilization rate but also helps to enhance the effect of preheating the secondary air.

[0062] Furthermore, a first air inlet 220 and a second air inlet 230 are provided on the side of the lower disk 200 close to the burner 600, and the first air inlet 220 and the second air inlet 230 are staggered up and down; the first air inlet 220 is set toward the outer ring of the burner, and the second air inlet 230 is set toward the inner ring of the burner.

[0063] Specifically, the shape, size, number and position layout of the first air inlet 220 and the second air inlet 230 are not limited, and can also be a flip hole, a through hole, or a shutter structure, and the shape can be a long slot hole, a round hole, a polygonal hole or an elliptical hole.

[0064] In this embodiment, refer to Figure 3 and Figure 4 A first louver 240 is provided at the lower edge of the first air inlet 220 for directing the air upward and toward the outer ring of the burner; a second louver 250 is provided at the upper edge of the second air inlet 230 for directing the air downward and toward the inner ring of the burner.

[0065] Optionally, the shutter of this embodiment may be a plate-like structure, and the specific shape of the plate-like structure is adapted to the shape of the corresponding inlet.

[0066] Specifically, the annular inner hole of the middle partition layer 300 is lower than the second air inlet 230 provided on the lower disk 200 along the circumference, and the annular outer edge is lower than the air inlet holes 210 provided at circumferential intervals in the upper half section of the outer side of the lower disk 200. The annular inner hole and the annular outer edge are respectively fitted with the inner side wall of the concave annular disk of the lower disk 200 along the circumference, so that the air inlet holes 210 provided on the lower disk 200 are connected with the first air inlet 220 and the second air inlet 230.

[0067] In this embodiment, the preheating cavity is selected to be in the form of a double-cavity structure.

[0068] Specifically, refer to Figure 3An intermediate partition 300 is provided in the preheating cavity, which divides the preheating cavity into a secondary air preheating cavity 120 and a thermal insulation cavity 260; the secondary air preheating cavity 120 connects the burner 600 with the external environment; the thermal insulation cavity 260 is sealed and located below the secondary air preheating cavity 120, and is used to play a role in thermal insulation. Specifically, the thermal insulation cavity 260 has an insulation function for the preheating cavity, ensuring that the secondary air flowing into the secondary air preheating cavity 120 maintains a relatively high-temperature preheating state, thereby enhancing the high-temperature preheating effect, increasing the combustion flame temperature, and effectively improving the thermal efficiency, while also playing a role in thermal insulation for the liquid tray 500 or the gas stove panel.

[0069] In combination with the above-mentioned first air inlet 220 being set toward the outer ring of the burner, and the second air inlet 230 being set toward the inner ring of the burner, they can be respectively introduced into the outer ring fire of the burner and the inner ring fire of the burner to participate in the combustion. The preheating effect of the secondary air participating in the combustion is relatively more sufficient and the temperature is higher, thereby increasing the combustion flame temperature and further improving the combustion thermal efficiency; at the same time, the secondary air supplied to the outer ring fire of the burner and the inner ring fire of the burner is preheated at the same time, and its temperature is relatively uniform, ensuring the balanced combustion of the outer ring fire and the inner ring fire, enhancing the overall combustion effect, and thus improving the combustion thermal efficiency. In addition, the louver structure design has a directional guide effect on the secondary air flowing out of the secondary air preheating chamber 120, ensuring that the secondary air required for the combustion of the outer ring fire and the inner ring fire passes through their respective corresponding louvers and is relatively directional and guided and supplied, and fully participates in the combustion.

[0070] In one embodiment of the present application, the middle partition layer 300 adopts an annular plate structure, and the middle partition layer 300 is arranged to be gradually inclined upward from the annular inner hole to the annular outer edge.

[0071] Among them, there is a gap between the middle partition layer 300 and the bottom of the groove 110. If the middle partition layer 300 contacts the groove 110 of the upper disk 100, the temperature on the upper disk 100 will be transferred to the middle partition layer 300 through heat transfer, resulting in a large heat loss. Setting an appropriate gap is conducive to fully preheating the secondary air in a sufficient space, reducing heat loss, and thus improving heat utilization.

[0072] For example, the upper tray 100 and the lower tray 200, as well as the intermediate layer 300 and the lower tray 200, can be separate structures, i.e., the upper tray 100 is placed on the lower tray 200, and the intermediate layer 300 is placed on the inner side wall of the lower tray 200. Alternatively, the upper tray 100 and the lower tray 200, as well as the intermediate layer 300, can be joined using a combination of welding, riveting, or crimping processes. For example, the intermediate layer 300 can be welded to the interior of the lower tray 200, and the edges of the upper tray 100 and the lower tray 200 can be welded, riveted, or crimped.

[0073] Reference Figure 1 The upper surface of the upper plate 100 is provided with a plurality of pot supporting feet 400.

[0074] Specifically, multiple pot support feet 400 are radially and evenly spaced along the circumference, and are arranged within the outer edge of the upper surface of the upper plate 100, and the upper plane of the pot support feet 400 is higher than the outer edge of the upper plate 100. This can avoid direct contact between the pot support feet 400 and the outside air, so that the combustion heat energy absorbed by the pot support feet 400 is conducted to heat the bottom of the pot, thereby improving the utilization rate of the combustion heat energy and ensuring smooth discharge of combustion smoke.

[0075] For example, the plurality of pot supporting feet 400 may be provided as three, four, etc.

[0076] Reference Figure 3 The bottom end of the lower plate 200 is recessed downward to form a recessed platform 270, which is used to abut against the liquid collecting pan 500 or the stove panel. The design of the recessed platform 270 can increase the volume of the preheating cavity and the capacity of the filled air, which can effectively reduce the heat transfer from the recessed platform 270 to the liquid collecting pan 500 or the stove panel.

[0077] Furthermore, the concave platforms 270 are arranged in a circle at the bottom end of the lower disk 200 and are arranged close to the outer circle of the lower disk 200 .

[0078] Reference Figure 6 An elastic seal 280 is provided at the bottom end of the recessed platform 270. This configuration can further prevent heat transfer to the liquid receiving pan 500 or the stove panel, provide better insulation and increase the damping feeling. At the same time, it can also serve as a seal there, ensuring that the area is relatively sealed, avoiding the relatively cold air from the outside from entering through this area and causing heat loss problems.

[0079] Optionally, the elastic sealing member 280 may be a rubber sealing ring, which is sandwiched between the recessed platform 270 and the liquid receiving tray 500 .

[0080] Reference Figure 5 and Figure 6 This embodiment also provides a gas stove, which includes a burner 600 and a pot support for a gas stove of the aforementioned embodiment; the upper plate 100 and the lower plate 200 are both mounted on the burner 600, and an annular air supply channel is formed between the lower plate 200 and the burner 600.

[0081] Specifically, the lower disk 200 has a lower disk center hole, which is sleeved on the burner 600, and a certain distance is set between the inner wall of the lower disk center hole and the outer wall of the burner 600, that is, the air supply channel, to ensure the entry and supply of secondary air required for combustion, so that the combustion is more complete and the overall combustion effect is improved.

[0082] Please continue to refer to Figure 6 The width of the air supply channel is gradually increased from top to bottom, and the air supply channel is communicated with the first air inlet 220 and the second air inlet 230. At the same time, the setting of the air supply channel also provides space for arranging the first louver 240 and the second louver 250.

[0083] Please refer again Figure 6 During specific use, secondary air can enter the secondary air preheating chamber 120 through the air inlet 210, part of the secondary air flows out from the first air inlet 220, and flows to the inner ring of the burner under the guidance of the first louver 240, and part of the secondary air flows out from the second air inlet 230, and flows to the outer ring of the burner under the guidance of the second louver 250.

[0084] In summary, the above-described specific structure helps the gas stove pot support concentrate combustion heat energy, enhances thermal insulation and heat preservation properties, strengthens the high-temperature preheating of the secondary air required for combustion, increases and balances the combustion flame temperature, and improves the overall combustion effect. Furthermore, the provision of a secondary air preheating chamber 120 and an air supply channel allows the secondary air involved in combustion to be preheated, improving both thermal utilization and thermal efficiency. The size and number of the corresponding openings, as well as the size of the secondary air preheating chamber 120, can also be adjusted according to the actual needs of the burner 600. This facilitates control of the total flow rate of secondary air required for combustion, avoiding problems with excess or insufficient air, and further enhancing the overall combustion effect.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pot support for a gas cooker, characterized in that: include: An upper disk (100) and a lower disk (200), wherein the upper disk (100) and the lower disk (200) enclose a preheating cavity; The preheating cavity communicates with the burner (600) and the external environment; The upper disk (100) is an annular disk, and the upper surface of the upper disk (100) is a concave arc surface with a low annular inner hole edge and a high annular outer edge, and the concave arc surface is concave in the direction of the preheating cavity to form a plurality of grooves (110); The lower disk (200) is a concave annular disk having an annular lower concave cavity; An air inlet (210) is provided on a side of the lower disk (200) away from the burner (600), and the air inlet (210) connects the preheating cavity with the external environment; A first air inlet (220) and a second air inlet (230) are provided on a side of the lower disk (200) close to the burner (600), and the first air inlet (220) and the second air inlet (230) are staggered in vertical arrangement; The first air inlet (220) is arranged toward the outer ring of the burner (600), and the second air inlet (230) is arranged toward the inner ring of the burner (600); A first louver (240) is provided at the lower edge of the first air inlet (220) for directing air upward and toward the outer ring of the burner (600); A second louver (250) is provided at the upper edge of each of the second air inlets (230) for directing air downward and toward the inner ring of the burner (600); A middle partition (300) is provided in the preheating cavity, and the middle partition (300) divides the preheating cavity into a secondary air preheating cavity (120) and a heat preservation and insulation cavity (260); The secondary air preheating chamber (120) is in communication with the burner (600) and the external environment; The heat-insulating cavity (260) is sealed and located below the secondary air preheating cavity (120), and is used to provide heat-insulating effects; A gap is left between the middle partition layer (300) and the bottom of the groove (110).

2. The pan support for a gas cooker according to claim 1, characterized in that: Each groove (110) extends along the width direction or radial direction of the concave arc surface, and a plurality of grooves (110) are evenly spaced along the circumference of the concave arc surface.

3. The pan support for a gas cooker according to claim 1, characterized in that: The middle partition layer (300) adopts an annular plate structure, and the middle partition layer (300) is arranged to gradually tilt upwards from the annular inner hole to the annular outer edge.

4. The pan support for a gas cooker according to any one of claims 1 to 3, characterized in that: The preheating cavity is a rectangular annular cavity, a circular annular cavity, a polygonal annular cavity or an elliptical annular cavity.

5. The pan support for a gas cooker according to any one of claims 1 to 3, characterized in that: The bottom end of the lower layer plate (200) is recessed downward to form a concave platform (270), and the concave platform (270) is used to abut against the liquid receiving plate (500) or the stove panel.

6. The pan support for a gas cooker according to claim 5, characterized in that: The concave platform (270) is arranged in a circle at the bottom end of the lower disk (200) and is arranged close to the outer circle of the lower disk (200).

7. The pan support for a gas cooker according to claim 5, characterized in that: An elastic sealing member (280) is provided at the bottom end of the concave platform (270).

8. A gas stove, characterized in that: include: A burner (600) and a pot support for a gas cooker according to any one of claims 1 to 7; The upper disc (100) and the lower disc (200) are both sleeved on the burner (600), and an annular air supply channel is formed between the lower disc (200) and the burner (600).

9. The gas stove according to claim 8, characterized in that: The width of the air supply channel is gradually increased from top to bottom.

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