Energy-gathering pot rack and gas cooker

Abstract

The invention relates to the technical field of kitchen utensils, and discloses an energy-gathering pot rack and a gas cooker. The energy-gathering pot rack comprises a gas cooker, the gas cooker comprises a combustor and an energy-gathering pot rack, the energy-gathering pot rack is arranged on the combustor in a surrounding mode, the energy-gathering pot rack comprises a support assembly, an upper energy-gathering ring, a lower energy-gathering ring and an outer energy-gathering ring, the upper energy-gathering ring, the lower energy-gathering ring and the outer energy-gathering ring are connected with the support assembly, the lower energy-gathering ring is arranged below the upper energy-gathering ring, and a first flow channel is formed between the lower energy-gathering ring and the upper energy-gathering ring; the outer energy gathering ring is annularly arranged on the periphery of the upper energy gathering ring, and a second flow channel is formed between the outer energy gathering ring and the upper energy gathering ring. According to the energy-gathering pot rack, secondary air can be smoothly supplemented, sufficient combustion of fuel gas is guaranteed, part of high-temperature flue gas can flow back, and the refluxed high-temperature flue gas can preheat the secondary air and can be further combusted, so that the combustion heat efficiency is improved, and the concentration of waste gas such as CO and NO in the flue gas is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to an energy-gathering pot rack and a gas cooker. Background Art

[0002] Gas stove is a very widely used kitchen appliance, and with the continuous development of society, high combustion thermal efficiency has become one of the development directions of gas stoves.

[0003] Part of the heat energy generated by the combustion of a gas stove is used to heat the pot, and part of it heats the surrounding air through thermal radiation and dissipates outward, causing heat loss. Therefore, in the related art, in order to pursue higher thermal efficiency, a pot rack with an energy-gathering plate has been developed. The energy-gathering plate forms a physical barrier between the flame and the outside air, reducing the loss of high-temperature smoke and thus reducing heat loss. However, the setting of the energy-gathering plate will affect the supplement of secondary air. If the amount of secondary air is insufficient, it will lead to incomplete combustion of the gas, thereby reducing the thermal efficiency of combustion; in addition, the supplemented low-temperature secondary air needs to absorb a certain amount of heat, which will also reduce the thermal efficiency of combustion.

[0004] Therefore, there is an urgent need for an energy-gathering pot rack and a gas cooker to solve the above-mentioned technical problems. Summary of the invention

[0005] One purpose of the present invention is to provide an energy-gathering boiler rack that can smoothly replenish secondary air, ensure full combustion of gas, and enable part of the high-temperature flue gas to reflux. The refluxed high-temperature flue gas can both preheat the secondary air and further burn, thereby improving the thermal efficiency of combustion and reducing the concentration of waste gases such as CO and NO in the flue gas.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An energy-gathering pot stand comprises a support assembly and an upper energy-gathering ring, a lower energy-gathering ring and an outer energy-gathering ring respectively connected to the support assembly, wherein the lower energy-gathering ring is arranged below the upper energy-gathering ring and forms a first flow channel with the upper energy-gathering ring, and the outer energy-gathering ring is arranged around the outer periphery of the upper energy-gathering ring and forms a second flow channel with the upper energy-gathering ring.

[0008] As an optional solution, the highest point of the outer energy focusing ring is higher than the highest point of the upper energy focusing ring.

[0009] As an optional solution, along the axial direction and from top to bottom, the width of the second flow channel gradually decreases.

[0010] As an optional solution, the upper end of the upper energy focusing ring is configured as a first arc-shaped guiding surface.

[0011] As an optional solution, along the radial direction from outside to inside, the first flow channel extends obliquely upward.

[0012] As an optional solution, the lowest point of the lower energy focusing ring is spaced apart from the bottom surface of the bracket assembly in the height direction so that a third flow channel is formed below the lower energy focusing ring.

[0013] As an optional solution, the lower end of the lower energy focusing ring is configured with a second arc-shaped guiding surface.

[0014] As an optional solution, along the radial direction and from the outside to the inside, the bottom surface of the outer energy focusing ring extends obliquely upward.

[0015] As an optional solution, the upper energy focusing ring is a hollow structure; and / or the lower energy focusing ring is a hollow structure; and / or the outer energy focusing ring is a hollow structure.

[0016] As an optional solution, the bracket assembly includes at least three foot pieces arranged at intervals along the circumferential direction, the upper energy focusing ring is respectively connected to each of the foot pieces, the lower energy focusing ring is respectively connected to each of the foot pieces, and the outer energy focusing ring is respectively connected to each of the foot pieces.

[0017] Another object of the present invention is to provide a gas cooker which, by adopting the above-mentioned energy-gathering pot rack, has high thermal efficiency of combustion and low concentration of waste gases such as CO and NO in the smoke.

[0018] To achieve this object, the present invention adopts the following technical solutions:

[0019] The gas cooker comprises a frame, a burner and the energy-gathering pot frame, wherein the energy-gathering pot frame is supported on the frame and arranged around the outer periphery of the burner.

[0020] The beneficial effects of the present invention are:

[0021] The energy-gathering pot stand of the present invention:

[0022] (1) When in use, external air can enter the energy-gathering pot frame from the first flow channel, thereby smoothly supplementing secondary air for the combustion of gas, and the upper energy-gathering ring and the lower energy-gathering ring can preheat the secondary air, thereby ensuring the stability of combustion and improving the thermal efficiency of combustion; the high-temperature flue gas generated by the combustion flows outward from the space between the upper side of the energy-gathering pot frame and the bottom surface of the pot, and a part of the high-temperature flue gas will flow into the second flow channel under the obstruction of the outer energy-gathering ring, and then enter the first flow channel driven by the airflow of the secondary air, thereby forming a reflux of the high-temperature flue gas. The refluxed high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of combustion, but also can be further burned after entering the energy-gathering pot frame, thereby further improving the thermal efficiency of combustion and reducing the concentration of waste gases such as CO and NO in the final exhaust flue gas.

[0023] (2) By setting the highest point of the outer energy focusing ring to be higher than the highest point of the upper energy focusing ring, the outer energy focusing ring can block the high-temperature flue gas flowing outward, thereby ensuring that sufficient high-temperature flue gas can enter the second flow channel to form a reflux, thereby further improving the thermal efficiency of combustion.

[0024] (3) By gradually reducing the cross-sectional area of ​​the second flow channel, the pressure at the inlet end of the second flow channel is ensured to be in a relatively low state, thereby facilitating sufficient high-temperature flue gas reflux to further improve the thermal efficiency of combustion.

[0025] (4) Since high-temperature flue gas has a tendency to move upward, by setting the first flow channel to extend upward at an angle, a larger proportion of the high-temperature flue gas flowing out of the second flow channel enters the first flow channel to form a backflow, thereby further improving the thermal efficiency of combustion.

[0026] (5) By forming a third flow channel below the lower energy focusing ring, not only is there an increase in the channel for replenishing secondary air to the burner inside the energy focusing ring, but the secondary air from the first flow channel and the third flow channel can correspond to the top and root of the flame respectively, that is, the secondary air is replenished in all directions, thereby further ensuring the adequacy of combustion and improving the thermal efficiency of combustion.

[0027] The energy-gathering pot stand of the present invention:

[0028] The gas cooker of the present invention adopts the above-mentioned energy-gathering pot rack, so that the thermal efficiency of combustion is high and the concentration of waste gases such as CO and NO in the smoke is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an energy-gathering pot rack provided in a specific embodiment of the present invention;

[0030] Figure 2 is a longitudinal cross-sectional view of an energy-gathering pot stand provided in a specific embodiment of the present invention;

[0031] Figure 3 yes Figure 2 Schematic diagram of airflow at A in FIG.

[0032] Figure 4 yes Figure 2 Schematic diagram of the dimensional relationship at A in FIG.

[0033] Figure 5 It is a longitudinal cross-sectional view of the energy-gathering pot stand provided by a specific embodiment of the present invention at the foot piece;

[0034] In the figure:

[0035] 10. bracket assembly; 11. foot piece; 111. lower support foot; 1111. bottom surface; 112. connecting beam; 113. upper support foot;

[0036] 20. upper energy-gathering ring; 21. first arc-shaped guiding surface; 22. first lower side wall; 23. outer side wall;

[0037] 30. lower energy-gathering ring; 31. second arc-shaped guiding surface; 32. upper side wall;

[0038] 40. outer energy-gathering ring; 41. inner side wall; 42. second lower side wall;

[0039] 51. First flow channel; 52. Second flow channel; 53. Third flow channel. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] This embodiment provides an energy-gathering pot stand and a gas cooker, wherein the gas cooker comprises a frame, a burner and an energy-gathering pot stand. The burner is supported on the frame, and the air inlet end of the burner is connected to an external gas source through a nozzle structure. When the gas cooker is working, the nozzle sprays gas into the burner and simultaneously injects primary air into the burner. The primary air and gas are mixed inside the burner and discharged from the fire hole of the burner and burn. The energy-gathering pot stand is supported on the frame and is arranged around the outer periphery of the burner. The energy-gathering pot stand is used to support the pot.

[0045] The energy-gathering pot rack in the prior art is usually provided with an energy-gathering plate, but the energy-gathering plate will affect the replenishment of secondary air. If the amount of secondary air is insufficient, it will lead to incomplete combustion of gas, thereby reducing the thermal efficiency of combustion. In addition, the supplemented low-temperature secondary air needs to absorb a certain amount of heat, which will also reduce the thermal efficiency of combustion.

[0046] In this regard, Figure 1-Figure 3 As shown, the energy-gathering pot support in this embodiment includes a support assembly 10, an upper energy-gathering ring 20, a lower energy-gathering ring 30 and an outer energy-gathering ring 40. The upper energy-gathering ring 20, the lower energy-gathering ring 30 and the outer energy-gathering ring 40 are coaxially arranged and respectively connected to the support assembly 10. The lower energy-gathering ring 30 is arranged below the upper energy-gathering ring 20, and a first flow channel 51 is formed between the lower energy-gathering ring 30 and the upper energy-gathering ring 20, and the outer energy-gathering ring 40 is arranged around the outer periphery of the upper energy-gathering ring 20, and a second flow channel 52 is formed between the lower energy-gathering ring 30 and the upper energy-gathering ring 20.

[0047] like Figure 3As shown, the dotted arrow in the figure indicates the flow direction of the secondary air, and the solid arrow indicates the flow direction of the high-temperature flue gas. When the burner is burning, the air outside the energy-gathering pot rack can enter the energy-gathering pot rack from the first flow channel 51, thereby smoothly supplementing the secondary air for the combustion of the gas, and the upper energy-gathering ring 20 and the lower energy-gathering ring 30 can preheat the secondary air, thereby ensuring the stability of the combustion and improving the thermal efficiency of the combustion; the high-temperature flue gas generated by the combustion flows outward from the space between the upper side of the energy-gathering pot rack and the bottom surface of the pot, and a part of the high-temperature flue gas will flow into the second flow channel 52 under the obstruction of the outer energy-gathering ring 40, and then enter the first flow channel 51 driven by the airflow of the secondary air, thereby forming a reflux of the high-temperature flue gas. The refluxed high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of the combustion, but also the CO and NO contained therein can be further burned after entering the energy-gathering pot rack, thereby further improving the thermal efficiency of the combustion and reducing the concentration of waste gases such as CO and NO in the final exhaust flue gas. The gas cooker of this embodiment adopts the above-mentioned energy-gathering pot rack, so the thermal efficiency of combustion is high and the concentration of waste gases such as CO and NO in the smoke is low.

[0048] like Figure 3 and Figure 4 As shown, the highest point of the outer energy focusing ring 40 is higher than the highest point of the upper energy focusing ring 20. Therefore, when the high-temperature smoke flows outward from the space between the upper side of the energy focusing pot frame and the bottom surface of the pot, the outer energy focusing ring can block it, thereby ensuring that enough high-temperature smoke can flow downward into the second flow channel 52 and eventually form a backflow, so as to further improve the thermal efficiency of combustion.

[0049] like Figure 4 As shown, the distance between the highest point of the upper energy focusing ring 20 and the highest point of the outer energy focusing ring 40 is H, where 3mm≤H≤15mm. This arrangement ensures that the outer energy focusing ring 40 can effectively stop the high-temperature flue gas to allow part of the high-temperature flue gas to flow back, and does not cause the entire energy focusing pot frame to be too large in height due to the large height difference between the upper energy focusing ring 20 and the outer energy focusing ring 40. Optionally, H can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, with 8mm being preferred.

[0050] In this embodiment, the upper energy focusing ring 20, the lower energy focusing ring 30 and the outer energy focusing ring 40 are all hollow structures, that is, the upper energy focusing ring 20, the lower energy focusing ring 30 and the outer energy focusing ring 40 each form a closed cavity. The air in the closed cavity reduces the rate at which heat is further dissipated to the outside air, that is, it has a heat preservation effect, which is beneficial to improve the thermal efficiency of the combustion stove.

[0051] like Figure 3As shown, the upper end of the upper energy-gathering ring 20 is configured as a first arc-shaped guide surface 21. The setting of the first arc-shaped guide surface 21 can reduce the resistance of the high-temperature flue gas discharge inside the energy-gathering pot frame, and ensure the smooth flow of the high-temperature flue gas. Since the high-temperature flue gas has a tendency to flow upward, in this embodiment, the first arc-shaped guide surface 21 extends to the upper end of the second flow channel 52. Such a setting is conducive to guiding the high-temperature flue gas into the second flow channel 52, and ensuring sufficient high-temperature flue gas reflux during the combustion process.

[0052] like Figure 3 As shown, the width of the second flow channel 52 gradually decreases in the axial direction and from the top to the bottom. This arrangement makes the pressure at the inlet end of the second flow channel 52 in a relatively small state, which is conducive to sufficient high-temperature flue gas entering the second flow channel 52, increasing the amount of high-temperature flue gas that flows back, so as to further improve the thermal efficiency of combustion. In this embodiment, the second flow channel 52 is formed between the outer wall 23 of the upper energy focusing ring 20 and the inner wall 41 of the outer energy focusing ring 40. Optionally, the inner wall 41 is constructed as a straight surface, and since the first arc-shaped guide surface 21 extends to connect with the inner wall 41, the second flow channel 52 is naturally formed into a shape with a gradually smaller width.

[0053] like Figure 3 As shown, the first flow channel 51 extends obliquely upward in the radial direction from the outside to the inside. Since the high-temperature flue gas has a tendency to move upward, by setting the first flow channel 51 to extend obliquely upward, a larger proportion of the high-temperature flue gas flowing out of the second flow channel 52 enters the first flow channel 51 to form a reflux, thereby further improving the thermal efficiency of the combustion. In this embodiment, the lower side wall of the upper energy focusing ring 20 is the first lower side wall 22, and the first flow channel 51 is formed between the first lower side wall 22 and the upper side wall 32 of the lower energy focusing ring 30. In the radial direction from the outside to the inside, the first lower side wall 22 and the upper side wall 32 are both set to extend obliquely upward, thereby ensuring that the first flow channel 51 extends obliquely upward.

[0054] like Figure 3 and Figure 4As shown, the bottom surface of the outer energy focusing ring 40 is located on the side of the first flow channel 51, so that the external air can smoothly enter the first flow channel 51. In this embodiment, along the radial direction and from the outside to the inside, the bottom surface of the outer energy focusing ring 40 extends obliquely upward, and the bottom surface extending obliquely upward can guide the air, thereby allowing the secondary air to enter the first flow channel 51 more smoothly. In this embodiment, the lower side wall of the outer energy focusing ring 40 is the second lower side wall 42, and the lower surface of the second lower side wall 42 is the bottom surface of the outer energy focusing ring 40. The height of the end of the second lower side wall 42 close to the first flow channel 51 is substantially the same as the outer end of the lower side wall of the upper energy focusing ring 20. Optionally, the angle between the bottom surface of the outer energy focusing ring 40 and the horizontal plane is α, and the value of α is 5°-35°. Optionally, α can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, etc., preferably 15°.

[0055] like Figure 3 As shown, the lowest point of the lower energy focusing ring 30 is spaced apart from the bottom surface 1111 of the bracket assembly 10 in the height direction, so that a third flow channel 53 is formed below the lower energy focusing ring 30. By providing the third flow channel 53, not only is there an additional channel for supplementing secondary air to the burner inside the energy focusing ring, but also the secondary air from the first flow channel 51 and the third flow channel 53 can correspond to the top and the root of the flame respectively, that is, the secondary air is supplemented in all directions, thereby further ensuring the sufficiency of combustion and improving the thermal efficiency of combustion.

[0056] like Figure 3 As shown, the lower end of the lower energy focusing ring 30 is configured with a second arc-shaped guide surface 31. The second arc-shaped guide surface 31 is more likely to guide the secondary air from the third flow channel 53 into the energy focusing pot frame to ensure sufficient secondary air supply. In addition, the second arc-shaped guide surface 31 allows the secondary air to more fully contact the lower energy focusing ring 30 during the process of flowing through the third flow channel 53, thereby allowing the lower energy focusing ring 30 to better preheat the secondary air to improve the thermal efficiency of combustion.

[0057] like Figure 5 As shown, the bracket assembly 10 includes at least three foot pieces 11, and at least three foot pieces 11 are arranged at intervals along the circumferential direction. The upper energy focusing ring 20 is connected to each foot piece 11, the lower energy focusing ring 30 is connected to each foot piece 11, and the outer energy focusing ring 40 is connected to each foot piece 11, which not only realizes the fixation of the three energy focusing rings, but also makes the overall structure of the energy focusing pot rack as a whole. Optionally, in this embodiment, the bracket assembly 10 includes four foot pieces 11. In other embodiments, the bracket assembly 10 can also be provided with three, five or more foot pieces 11, which is not specifically limited here. Optionally, each energy focusing ring can be connected to the foot piece 11 by welding, fastener connection, etc., which is not specifically limited here.

[0058] In this embodiment, Figure 5 As shown, the foot piece 11 forms a C-shaped space with an opening facing the outside, and the upper energy focusing ring 20, the lower energy focusing ring 30 and the outer energy focusing ring 40 are all installed in the C-shaped space. Such a configuration allows the foot piece 11 to protect each energy focusing ring and reduce the risk of each energy focusing ring being damaged by the external structure. Specifically, the foot piece 11 includes a lower support leg 111, a connecting beam 112 and an upper support leg 113. The connecting beam 112 extends vertically, and the lower support leg 111 and the upper support leg 113 are respectively connected to the upper and lower ends of the connecting beam 112, and the lower support leg 111 extends horizontally outward from the lower end of the connecting beam 112, and part of the upper support leg 113 extends outward from the upper end of the connecting beam 112, thereby forming a C-shaped space. The lower support leg 111 is supported on the frame, and the lower surface of the lower support leg 111 is the bottom surface 1111 of the bracket assembly 10. The upper support leg 113 is used to support the pot. The upper energy focusing ring 20 and the lower energy focusing ring 30 are both connected to the connecting beam 112 , and the outer energy focusing ring 40 is connected to the upper supporting leg 113 .

[0059] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope, and the content of this specification should not be understood as limiting the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Energy-gathering pot rack, characterized in that: The invention comprises a support assembly (10), and an upper energy focusing ring (20), a lower energy focusing ring (30), and an outer energy focusing ring (40) respectively connected to the support assembly (10); the lower energy focusing ring (30) is arranged below the upper energy focusing ring (20), and a first flow channel (51) is formed between the lower energy focusing ring (30) and the upper energy focusing ring (20); the outer energy focusing ring (40) is arranged around the outer periphery of the upper energy focusing ring (20), and a second flow channel (52) is formed between the lower energy focusing ring (30) and the upper energy focusing ring (20).

2. The energy-gathering pot stand according to claim 1, characterized in that: The highest point of the outer energy focusing ring (40) is higher than the highest point of the upper energy focusing ring (20).

3. The energy-gathering pot stand according to claim 1, characterized in that: The width of the second flow channel (52) gradually decreases along the axial direction from top to bottom; and / or The upper end of the upper energy focusing ring (20) is configured as a first arc-shaped guiding surface (21).

4. The energy-gathering pot stand according to claim 1, characterized in that: In the radial direction and from the outside to the inside, the first flow channel (51) extends obliquely upward.

5. The energy-gathering pot stand according to claim 1, characterized in that: The lowest point of the lower energy focusing ring (30) and the bottom surface (1111) of the support assembly (10) are spaced apart in the height direction so that a third flow channel (53) is formed below the lower energy focusing ring (30).

6. The energy-gathering pot support according to claim 5, characterized in that: The lower end of the lower energy focusing ring (30) is configured with a second arc-shaped guiding surface (31).

7. The energy-gathering pot stand according to claim 1, characterized in that: In the radial direction and from the outside to the inside, the bottom surface of the outer energy focusing ring (40) extends obliquely upward.

8. The energy-gathering pot support according to any one of claims 1 to 7, characterized in that: The upper energy focusing ring (20) is a hollow structure; and / or the lower energy focusing ring (30) is a hollow structure; and / or the outer energy focusing ring (40) is a hollow structure.

9. The energy-gathering pot support according to any one of claims 1 to 7, characterized in that: The support assembly (10) comprises at least three foot pieces (11) arranged at intervals along the circumferential direction, the upper energy focusing ring (20) is connected to each of the foot pieces (11), the lower energy focusing ring (30) is connected to each of the foot pieces (11), and the outer energy focusing ring (40) is connected to each of the foot pieces (11).

10. A gas cooker, characterized in that: The invention comprises a frame, a burner and the energy-gathering pot rack according to any one of claims 1 to 9, wherein the energy-gathering pot rack is supported on the frame and is arranged around the outer periphery of the burner.

Images