Energy - concentrating pot rack and gas stove

Abstract

The present application relates to the technical field of kitchen utensils, and discloses a concentrated energy pot rack and gas stove. The concentrated energy pot rack comprises a gas stove including a burner and the concentrated energy pot rack, the concentrated energy pot rack is arranged around the burner, the concentrated energy pot rack comprises a support assembly and an upper concentrated energy ring, a lower concentrated energy ring and an outer concentrated energy ring connected with the support assembly respectively, the lower concentrated energy ring is arranged below the upper concentrated energy ring and forms a first flow channel with the upper concentrated energy ring, and the outer concentrated energy ring is arranged around the outer periphery of the upper concentrated energy ring and forms a second flow channel with the upper concentrated energy ring. The above-mentioned concentrated energy pot rack can smoothly supplement secondary air, ensure sufficient gas combustion, and make part of high-temperature flue gas backflow, the backflow of high-temperature flue gas can preheat the secondary air and further burn, so as to improve the thermal efficiency of combustion and reduce the concentration of waste gas such as CO and NO in flue gas.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances technology, and in particular to an energy-efficient pot rack and a gas stove. Background Technology

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

[0003] The heat generated by gas stove combustion is partly used to heat the cookware, and partly used to heat the surrounding air through thermal radiation, resulting in heat loss. Therefore, in pursuit of higher thermal efficiency, related technologies have developed pot supports with energy-concentrating plates. These plates form a physical barrier between the flame and the outside air, reducing the loss of high-temperature flue gas and thus minimizing heat loss. However, the energy-concentrating plate affects the replenishment of secondary air. Insufficient secondary air leads to incomplete combustion, thus reducing combustion thermal efficiency. Furthermore, the replenished low-temperature secondary air absorbs a certain amount of heat, which also reduces combustion thermal efficiency.

[0004] Therefore, there is an urgent need for an energy-efficient pot rack and gas stove to solve the above-mentioned technical problems. Summary of the Invention

[0005] One objective of this invention is to provide an energy-concentrating boiler frame that can smoothly replenish secondary air, ensure complete combustion of fuel gas, and allow some high-temperature flue gas to flow back. The flow-back high-temperature flue gas can both preheat the secondary air and further combust it, thereby improving the thermal efficiency of combustion and reducing the concentration of exhaust gases such as CO and NO in the flue gas.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The energy-concentrating pot frame includes a support assembly and an upper energy-concentrating ring, a lower energy-concentrating ring, and an outer energy-concentrating ring respectively connected to the support assembly. The lower energy-concentrating ring is disposed below the upper energy-concentrating ring and forms a first flow channel with the upper energy-concentrating ring. The outer energy-concentrating ring is disposed around the outer periphery of the upper energy-concentrating ring and forms a second flow channel with the upper energy-concentrating ring.

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

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

[0010] As an alternative, the upper end of the upper energy-concentrating ring is constructed as a first arc-shaped guiding surface.

[0011] As an alternative, the first flow channel extends obliquely upward in a radial direction from the outside to the inside.

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

[0013] As an alternative, the lower end of the lower focusing ring is constructed with a second arc-shaped guiding surface.

[0014] As an alternative, the bottom surface of the outer focusing ring extends upward at an angle in a radial direction from the outside to the inside.

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

[0016] As an alternative, the support assembly includes at least three feet spaced apart circumferentially, with the upper energy-concentrating ring connected to each of the feet, the lower energy-concentrating ring connected to each of the feet, and the outer energy-concentrating ring connected to each of the feet.

[0017] Another objective of this invention is to provide a gas stove that, by employing the aforementioned energy-concentrating pot rack, achieves high thermal efficiency during combustion and low concentrations of CO and NO in the flue gas.

[0018] To achieve this objective, the present invention adopts the following technical solution:

[0019] A gas stove includes a frame, a burner, and the aforementioned energy-concentrating pot rack, which is supported on the frame and arranged around the outer periphery of the burner.

[0020] The beneficial effects of this invention are:

[0021] The energy-concentrating pot rack of the present invention:

[0022] (1) When in use, external air can enter the interior of the energy-concentrating boiler frame through the first flow channel, thus smoothly replenishing the secondary air for the combustion of gas. The upper and lower energy-concentrating rings 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 combustion flows outward from the space between the upper side of the energy-concentrating boiler frame and the bottom surface of the pot. A portion of the high-temperature flue gas will flow into the second flow channel under the obstruction of the outer energy-concentrating ring, and then enter the first flow channel under the influence of the secondary air flow, thus forming a high-temperature flue gas recirculation. The recirculated high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of combustion, but also further burn after entering the energy-concentrating boiler frame, thereby further improving the thermal efficiency of combustion and reducing the concentration of CO and NO in the final exhaust gas.

[0023] (2) By setting the highest point of the outer concentrating ring to be higher than the highest point of the upper concentrating ring, the outer concentrating ring can block the outward flow of high-temperature flue gas, thereby ensuring that enough high-temperature flue gas can enter the second flow channel to form a backflow, so as to further improve the thermal efficiency of combustion.

[0024] (3) By making the cross-sectional area of ​​the second flow channel gradually smaller, the pressure at the inlet end of the second flow channel is kept low, which is conducive to the recirculation of enough high-temperature flue gas to further improve the thermal efficiency of combustion.

[0025] (4) Since high-temperature flue gas has an upward tendency, by setting the first flow channel to extend upward at an angle, a larger proportion of the high-temperature flue gas flowing out from 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-concentrating ring, not only is there an increased channel for replenishing secondary air to the burner inside the energy-concentrating ring, but the secondary air from the first flow channel and the third flow channel can respectively correspond to the top and root of the flame, that is, replenish secondary air in all directions, thereby further ensuring the completeness of combustion and improving the thermal efficiency of combustion.

[0027] The energy-concentrating pot rack of the present invention:

[0028] The gas stove of the present invention, by adopting the above-mentioned energy-concentrating pot rack, has high combustion thermal efficiency and low concentration of exhaust gases such as CO and NO in the flue gas. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the energy-concentrating pot frame provided in a specific embodiment of the present invention;

[0030] Figure 2 This is a longitudinal cross-sectional view of the energy-concentrating pot frame provided in a specific embodiment of the present invention;

[0031] Figure 3 yes Figure 2 A schematic diagram of the airflow at point A in the diagram;

[0032] Figure 4 yes Figure 2 A schematic diagram showing the dimensional relationships at point A in the diagram;

[0033] Figure 5 This is a longitudinal cross-sectional view of the energy-concentrating boiler frame at the foot plate provided in a specific embodiment of the present invention;

[0034] In the picture:

[0035] 10. Support assembly; 11. Foot piece; 111. Lower support leg; 1111. Bottom surface; 112. Connecting beam; 113. Upper support leg;

[0036] 20. Upper energy-concentrating ring; 21. First arc-shaped guide surface; 22. First lower sidewall; 23. Outer sidewall;

[0037] 30. Lower energy-concentrating ring; 31. Second arc-shaped guide surface; 32. Upper sidewall;

[0038] 40. Outer concentrating ring; 41. Inner sidewall; 42. Second lower sidewall;

[0039] 51. First flow channel; 52. Second flow channel; 53. Third flow channel. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] This embodiment provides a high-efficiency pot holder and a gas stove, wherein the gas stove includes a frame, a burner, and a high-efficiency pot holder. The burner is supported on the frame, and its air inlet is connected to an external gas source through a nozzle structure. When the gas stove is working, the nozzle injects gas into the burner and simultaneously injects primary air into the burner. The primary air and gas mix inside the burner and are discharged from the burner's flame holes for combustion. The high-efficiency pot holder is supported on the frame and is arranged around the outer periphery of the burner. The high-efficiency pot holder is used to support the pot.

[0045] Existing energy-concentrating boiler racks typically feature an energy-concentrating plate, but this plate can affect the supply of secondary air. Insufficient secondary air can lead to incomplete combustion of the gas, thereby reducing the thermal efficiency of the combustion. Furthermore, the low-temperature secondary air that is supplied needs to absorb a certain amount of heat, which also reduces the thermal efficiency of the combustion.

[0046] In this regard, such as Figures 1-3 As shown, in this embodiment, the energy-concentrating pot frame includes a support assembly 10, an upper energy-concentrating ring 20, a lower energy-concentrating ring 30, and an outer energy-concentrating ring 40. The upper energy-concentrating ring 20, the lower energy-concentrating ring 30, and the outer energy-concentrating ring 40 are coaxially arranged and connected to the support assembly 10. The lower energy-concentrating ring 30 is located below the upper energy-concentrating ring 20 and forms a first flow channel 51 with the upper energy-concentrating ring 20. The outer energy-concentrating ring 40 is arranged around the outer periphery of the upper energy-concentrating ring 20 and forms a second flow channel 52 with the upper energy-concentrating ring 20.

[0047] like Figure 3As shown in the figure, the dashed arrows indicate the flow direction of secondary air, and the solid arrows indicate the flow direction of high-temperature flue gas. During combustion, air outside the energy-concentrating boiler rack can enter the interior of the energy-concentrating boiler rack through the first flow channel 51, thus smoothly supplementing the combustion of the gas with secondary air. The upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 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 combustion flows outward from the space between the upper side of the energy-concentrating boiler rack and the bottom surface of the pot. A portion of the high-temperature flue gas flows into the second flow channel 52 under the obstruction of the outer energy-concentrating ring 40, and then enters the first flow channel 51 under the influence of the secondary air flow, thus forming a high-temperature flue gas recirculation. The recirculated high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of combustion, but also, after entering the energy-concentrating boiler rack, the CO and NO contained therein can be further combusted, thereby further improving the thermal efficiency of combustion and reducing the concentration of CO and NO in the final exhaust gas. The gas stove in this embodiment uses the aforementioned energy-concentrating pot rack, resulting in high combustion thermal efficiency and low concentrations of CO and NO in the flue gas.

[0048] like Figure 3 and Figure 4 As shown, the highest point of the outer concentrating ring 40 is higher than the highest point of the upper concentrating ring 20. Therefore, during the outward flow of high-temperature flue gas from the space between the upper side of the concentrating pot rack and the bottom surface of the pot, the outer concentrating ring can block it, thereby ensuring that enough high-temperature flue gas can enter the second flow channel 52 downward and eventually form a recirculation, 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 concentrating ring 20 and the highest point of the outer concentrating ring 40 is H, where 3mm ≤ H ≤ 15mm. This setting ensures that the outer concentrating ring 40 can effectively block high-temperature flue gas, allowing some of the high-temperature flue gas to flow back, and also prevents the overall height of the concentrating pot frame from becoming too large due to an excessive height difference between the upper concentrating ring 20 and the outer concentrating ring 40. Optionally, H can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm, with 8mm being the preferred value.

[0050] In this embodiment, the upper energy-concentrating ring 20, the lower energy-concentrating ring 30, and the outer energy-concentrating ring 40 are all hollow structures, that is, the upper energy-concentrating ring 20, the lower energy-concentrating ring 30, and the outer energy-concentrating 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, thus achieving a heat preservation effect, which in turn helps to improve the thermal efficiency of the combustion stove.

[0051] like Figure 3As shown, the upper end of the upper energy-concentrating ring 20 is constructed as a first arc-shaped guide surface 21. The first arc-shaped guide surface 21 can reduce the resistance to the discharge of high-temperature flue gas inside the energy-concentrating boiler frame, ensuring smooth flow of high-temperature flue gas. Since high-temperature flue gas has an upward flow tendency, in this embodiment, the first arc-shaped guide surface 21 extends to the upper end of the second flow channel 52. This arrangement is beneficial for guiding high-temperature flue gas into the second flow channel 52, ensuring sufficient high-temperature flue gas recirculation during combustion.

[0052] like Figure 3 As shown, the width of the second flow channel 52 gradually decreases along the axial direction from top to bottom. This arrangement keeps the pressure at the inlet end of the second flow channel 52 relatively low, thereby facilitating the entry of a sufficient amount of high-temperature flue gas into the second flow channel 52, increasing the amount of high-temperature flue gas returning, and further improving the thermal efficiency of combustion. In this embodiment, the second flow channel 52 is formed between the outer wall 23 of the upper energy-concentrating ring 20 and the inner wall 41 of the outer energy-concentrating ring 40. Optionally, the inner wall 41 is constructed as a flat surface. Since the first arc-shaped guide surface 21 extends to connect with the inner wall 41, the second flow channel 52 naturally forms a shape with a gradually decreasing width.

[0053] like Figure 3 As shown, the first flow channel 51 extends obliquely upward in a radial direction from the outside to the inside. Since high-temperature flue gas tends 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 recirculation, thereby further improving the thermal efficiency of combustion. In this embodiment, the lower sidewall of the upper energy-concentrating ring 20 is a first lower sidewall 22, and the first flow channel 51 is formed between the first lower sidewall 22 and the upper sidewall 32 of the lower energy-concentrating ring 30. Both the first lower sidewall 22 and the upper sidewall 32 are set to extend obliquely upward in a radial direction from the outside to the inside, thus ensuring that the first flow channel 51 extends obliquely upward.

[0054] like Figure 3 and Figure 4As shown, the bottom surface of the outer concentrating ring 40 is located to the side of the first flow channel 51, allowing external air to smoothly enter the first flow channel 51. In this embodiment, the bottom surface of the outer concentrating ring 40 extends upward at an angle in the radial direction from the outside to the inside. This upwardly extending bottom surface guides the air, allowing secondary air to enter the first flow channel 51 more smoothly. In this embodiment, the lower sidewall of the outer concentrating ring 40 is the second lower sidewall 42, and the lower surface of the second lower sidewall 42 is the bottom surface of the outer concentrating ring 40. The end of the second lower sidewall 42 near the first flow channel 51 and the outer end of the lower sidewall of the upper concentrating ring 20 are at approximately the same height. Optionally, the angle between the bottom surface of the outer concentrating 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-concentrating 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-concentrating ring 30. By setting the third flow channel 53, not only are there more channels for replenishing secondary air to the burner inside the energy-concentrating ring, but the secondary air from the first flow channel 51 and the third flow channel 53 can respectively correspond to the top and root of the flame, that is, replenish secondary air from all directions, thereby further ensuring the completeness of combustion and improving the thermal efficiency of combustion.

[0056] like Figure 3 As shown, the lower end of the lower concentrating ring 30 is constructed with a second arc-shaped guide surface 31. The second arc-shaped guide surface 31 makes it easier to guide secondary air from the third flow channel 53 into the concentrating boiler frame, ensuring a sufficient supply of secondary air. In addition, the second arc-shaped guide surface 31 allows the secondary air to come into more full contact with the lower concentrating ring 30 as it flows through the third flow channel 53, thereby enabling the lower concentrating ring 30 to better preheat the secondary air and improve the thermal efficiency of combustion.

[0057] like Figure 5 As shown, the support assembly 10 includes at least three feet 11, which are spaced apart circumferentially. The upper energy-concentrating ring 20 is connected to each foot 11, the lower energy-concentrating ring 30 is connected to each foot 11, and the outer energy-concentrating ring 40 is connected to each foot 11. This not only secures the three energy-concentrating rings but also makes the entire energy-concentrating pot frame a single unit. Optionally, in this embodiment, the support assembly 10 includes four feet 11. In other embodiments, the support assembly 10 may also have three, five, or more feet 11; no specific limitation is made here. Optionally, each energy-concentrating ring may be connected to the foot 11 by welding, fasteners, or other methods; no specific limitation is made here.

[0058] In this embodiment, as Figure 5 As shown, the foot piece 11 forms a C-shaped space with its opening facing outwards. The upper energy-concentrating ring 20, lower energy-concentrating ring 30, and outer energy-concentrating ring 40 are all installed within this C-shaped space. This arrangement allows the foot piece 11 to protect each energy-concentrating ring, reducing the risk of damage to each energy-concentrating ring from impacts with external structures. 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 upper support leg 113 are respectively connected to the upper and lower ends of the connecting beam 112. The lower support leg 111 extends horizontally outwards from the lower end of the connecting beam 112, and part of the upper support leg 113 extends outwards from the upper end of the connecting beam 112, thus 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 support assembly 10. The upper support leg 113 is used to support the cookware. The upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 are both connected to the connecting beam 112, and the outer energy-concentrating ring 40 is connected to the upper support leg 113.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A pot holder with energy-concentrating properties, characterized in that: It includes 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 disposed below the upper energy focusing ring (20) and forms a first flow channel (51) between the lower energy focusing ring (20) and the upper energy focusing ring (20). The outer energy focusing ring (40) is disposed around the outer periphery of the upper energy focusing ring (20) and forms a second flow channel (52) between the outer energy focusing ring (20) and the upper energy focusing ring (20). The highest point of the outer energy focusing ring (40) is higher than the highest point of the upper energy focusing ring (20).

2. The energy-concentrating pot frame as described in claim 1, characterized in that, Along the axial direction and from top to bottom, the width of the second flow channel (52) gradually decreases; and / or The upper end of the upper energy-concentrating ring (20) is constructed as a first arc-shaped guiding surface (21).

3. The energy-concentrating pot frame as described in claim 1, characterized in that, The first flow channel (51) extends obliquely upward in a radial direction from the outside to the inside.

4. The energy-concentrating pot frame as described in claim 1, characterized in that, The lowest point of the lower energy-concentrating ring (30) is spaced apart from the bottom surface (1111) of the support assembly (10) in the height direction, so that a third flow channel (53) is formed below the lower energy-concentrating ring (30).

5. The energy-concentrating pot frame as described in claim 4, characterized in that, The lower end of the lower energy-concentrating ring (30) is constructed with a second arc-shaped guide surface (31).

6. The energy-concentrating pot frame as described in claim 1, characterized in that, The bottom surface of the outer energy-concentrating ring (40) extends upward at an angle in a radial direction from the outside to the inside.

7. The energy-concentrating pot frame as described in any one of claims 1-6, characterized in that, The upper energy-concentrating ring (20) is a hollow structure; and / or the lower energy-concentrating ring (30) is a hollow structure; and / or the outer energy-concentrating ring (40) is a hollow structure.

8. The energy-concentrating pot frame as described in any one of claims 1-6, characterized in that, The support assembly (10) includes at least three feet (11) spaced apart circumferentially. The upper energy-concentrating ring (20) is connected to each of the feet (11), the lower energy-concentrating ring (30) is connected to each of the feet (11), and the outer energy-concentrating ring (40) is connected to each of the feet (11).

9. A gas stove, characterized in that, It includes a frame, a burner, and a pot-concentrating frame as described in any one of claims 1-8, wherein the pot-concentrating frame is supported on the frame and arranged around the outer periphery of the burner.

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