High-heat-intensity infrared stove capable of enhancing heat exchange and design method of high-heat-intensity infrared stove

Abstract

The invention belongs to the technical field of infrared cooking utensils, and provides a heat exchange enhanced high-heat-intensity infrared cooking utensil and a design method, and the infrared cooking utensil comprises an infrared burner and an enhanced heat exchange device; the infrared burner comprises an infrared burner and a high-heat-intensity infrared radiation burning plate; the aperture ratio of the high-heat-intensity infrared radiation combustion plate is not lower than 38%, the micropore ratio is not lower than 20%, the infrared emissivity is not lower than 0.84, and the combustion stability and radiation efficiency of the infrared stove are improved; the enhanced heat exchange device comprises a heat exchanger, at least one turbulent flow ring and a plurality of supporting legs. The turbulent flow rings are concentrically and radially arranged on the surface of the heat exchanger, a certain height difference is formed between the supporting feet and the turbulent flow rings, and heat exchange channels are arranged between the turbulent flow rings and the surface of the heat exchanger. The infrared stove is reasonable in structural design and high in combustion efficiency, and high-temperature flue gas can be guided to be discharged according to a set path through the enhanced heat exchange device, so that the heat exchange time of the high-temperature flue gas and the stove is prolonged, enhanced heat exchange of the infrared stove is achieved, and the purpose of high heat efficiency under high heat intensity is achieved.

Description

Technical Field

[0001] This invention belongs to the field of infrared cooktop technology, specifically relating to a high-heat-intensity infrared cooktop with enhanced heat exchange and its design method. Background Technology

[0002] The average thermal efficiency of household infrared cooktops is higher than that of household atmospheric cooktops. This is primarily due to their combustion method. The working principle of a commonly used natural draft infrared cooktop is as follows: air is naturally drawn into the infrared burner by the gas pressure through an ejector, where it is fully premixed within the ejector and burner head. No secondary air supply is required during combustion. The uniformly mixed gas-air mixture enters the combustion surface through the flame holes and burns fully on the outer surface of the radiant combustion plate. The flame is generally short and flameless, hence the term "flameless combustion."

[0003] Currently, most conventional household infrared cooktops on the market have a heat load of ≤4kW. Under the existing heat load, the requirements for the infrared radiation combustion plate are not high, and a porous combustion plate can generally meet the requirements. However, when the heat load of a household infrared cooktop is >4kW, under the condition that the combustion area remains unchanged, the ordinary porous combustion plate will expose defects such as excessive flue gas, deflagration and backfire, and combustion plate cracking due to its own defects. As a result, it cannot meet the requirements of infrared cooktops with higher heat loads. Therefore, it is necessary to put forward higher requirements for the performance indicators of the combustion plate, and there is an urgent need to innovate and improve the performance and manufacturing process of the existing combustion plate. Furthermore, to improve the thermal efficiency of infrared cooktops, pot racks with energy-concentrating plates are generally used. These plates enhance insulation and reduce heat loss, indirectly improving the cooktop's heating efficiency. However, there has been little in-depth research on the emission standards and solutions for this pot rack structure, resulting in a situation where thermal efficiency and flue gas emission standards are mutually exclusive in gas appliances. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a high-heat-intensity infrared stove with enhanced heat exchange.

[0005] The technical solution adopted by this invention to solve its technical problem is: A high-intensity infrared stove with enhanced heat exchange includes an infrared burner and an enhanced heat exchange device; the infrared burner includes an infrared burner head and a high-intensity infrared radiation combustion plate, and the infrared burner head is connected to the high-intensity infrared radiation combustion plate. The high-heat-intensity infrared radiation combustion plate has an opening rate of not less than 38%, a microporosity of not less than 20%, and an infrared emissivity of not less than 0.84. The enhanced heat exchange device includes a heat exchanger, at least one turbulence ring, and several supports fixed to the surface of the heat exchanger; each of the turbulence rings is arranged concentrically radially on the surface of the heat exchanger, the supports and each of the turbulence rings form a certain height difference, and a heat exchange channel is provided between each of the turbulence rings and the surface of the heat exchanger.

[0006] In a preferred embodiment of the present invention, each of the turbulence rings is connected to the support leg, and each of the turbulence rings is separated from the surface of the heat exchanger; the surface of the heat exchanger is concave, and the outer circumferential edge of the heat exchanger is convex.

[0007] In a preferred embodiment of the present invention, two turbulence rings are provided, namely a first turbulence ring and a second turbulence ring; the first turbulence ring is located radially inside the second turbulence ring and is spaced apart by a certain distance.

[0008] In a preferred embodiment of the present invention, the height difference between the first turbulence ring and the support foot is H1, the height difference between the second turbulence ring and the support foot is H3, and the height difference between the outer edge of the heat exchanger and the support foot is H5, where H1≥H3≥H5.

[0009] In a preferred embodiment of the present invention, the heat exchanger includes a base, a heat insulation seat, and a heat exchange seat arranged sequentially from bottom to top. The heat exchange seat is the surface of the heat exchanger. The heat insulation seat is located between the base and the heat exchange seat. A first heat insulation cavity is provided between the base and the heat insulation seat, and a second heat insulation cavity is provided between the heat insulation seat and the heat exchange seat. The heat insulation seat is fixed on the base, and the heat exchange seat is fixed on the base or the heat insulation seat.

[0010] Preferably, both the outer and inner edges of the base protrude upwards, and the outer edge of the base has a first flange that extends radially outwards. The outer edge of the heat insulation seat overlaps the outer edge of the base, and the inner edge of the heat insulation seat protrudes upward and is located inside the base. The outer edge of the heat exchange base is bent downward to form a second flange, and the inner edge of the heat exchange base is bent downward to form a third flange; the second flange overlaps the first flange, and the third flange overlaps the inner edge of the base.

[0011] Preferably, the first flange has at least one slot along the circumferential direction; the second flange has at least one boss that matches the slot; when connected, the boss is embedded in the slot.

[0012] In a preferred embodiment of the present invention, the heat exchange seat, the heat insulation seat, and the base are combined into an integral structure.

[0013] In a preferred embodiment of the present invention, the first heat insulation cavity and the second heat insulation cavity are filled with heat insulation material.

[0014] The second objective of this invention is to provide a design method for a high-heat-intensity infrared stove that enhances heat exchange.

[0015] A design method for a high-heat-intensity infrared cooker with enhanced heat exchange includes the following steps: S1. The porosity of the high-heat-intensity infrared radiation combustion plate is designed to be no less than 38%, the microporosity to be no less than 20%, and the infrared emissivity to be no less than 0.84. S2. Determine the height difference between each turbulence ring and the support leg, as well as the height difference between the outer edge of the heat exchanger's circumference and the support leg; S3. Determine the height of the heat exchange channel formed between each turbulence ring and the surface of the heat exchanger.

[0016] Preferably, there are two turbulence rings, namely a first turbulence ring and a second turbulence ring; the first turbulence ring is located radially inside the second turbulence ring; In step S2, the height difference between the first turbulence ring and the support leg is determined to be H1, the height difference between the second turbulence ring and the support leg is determined to be H3, and the height difference between the outer edge of the heat exchanger and the support leg is determined to be H5; H1≥H3≥H5; In step S3, it is determined that a first heat exchange channel is formed between the first turbulence ring and the surface of the heat exchanger, and the height of the first heat exchange channel is H2; it is determined that a second heat exchange channel is formed between the second turbulence ring and the surface of the heat exchanger, and the height of the second heat exchange channel is H4; H2≥1mm and H4≥1mm.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The present invention discloses a high-heat-intensity infrared stove with enhanced heat exchange. The high-heat-intensity infrared radiation combustion plate of the infrared burner has an opening rate of not less than 38% and a microporosity of not less than 20%; an infrared emissivity of not less than 0.84; a reasonable structural design, and good combustion stability. It can meet the design requirements of infrared burners to achieve higher heat intensity per unit area and has a very significant practical effect.

[0018] Furthermore, the various turbulence rings effectively dampen the high-temperature flue gas and create a vortex turbulence effect, thereby effectively extending the heat exchange time between the high-temperature flue gas and the cookware, achieving enhanced heat exchange in the infrared cookware, and improving thermal efficiency.

[0019] Taking a design with two baffle rings as an example, when the cooktop is operating, some of the generated flue gas is discharged outward through the gap between the first baffle ring and the cookware, and the first heat exchange channel. Simultaneously, some of the flue gas encounters the damping effect of the first baffle ring, forming a vortex and reducing its emission velocity. The flue gas discharged after passing through the first baffle ring is then forcibly diverted and discharged through the gap between the second baffle ring and the cookware, and the second heat exchange channel. Again, some of the flue gas encounters the damping effect of the second baffle ring, forming a vortex and further reducing its emission velocity. Finally, the flue gas discharged after passing through the second baffle ring exits through the outer edge of the heat exchanger surface. This flue gas exhaust path design significantly increases the heat exchange time between the high-temperature flue gas and the cookware, improving the product's thermal efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the high-heat-intensity infrared stove with enhanced heat exchange according to the present invention.

[0022] Figure 2 This is a three-dimensional exploded view of the enhanced heat exchange device in the high-heat-intensity infrared stove of the present invention.

[0023] Figure 3 This is a cross-sectional view of the enhanced heat exchange device of the present invention.

[0024] Figure 4 for Figure 3 A partial view.

[0025] Figure 5 for Figure 3 A schematic diagram of other components of an infrared stove (the arrows in the diagram indicate the emission path of high-temperature flue gas).

[0026] Figure 6 This is a three-dimensional view of the first or second spoiler ring.

[0027] Figure 7 for Figure 2 A 3D view of the central base.

[0028] Figure 8 for Figure 2 A three-dimensional view of the heat exchanger base.

[0029] Figure 9 for Figure 1 A sectional view.

[0030] Figure 10 This is a perspective view of the first and second turbulence rings of the enhanced heat exchange device in this invention when they are integrally molded.

[0031] Figure 11 for Figure 10 A schematic diagram of the installation of the first and second turbulence rings with the heat exchange base.

[0032] Figure 12 This is a cross-sectional view of the enhanced heat exchange device of the present invention, in which heat insulation material is filled in the first and second heat insulation chambers.

[0033] in: 1-Heat exchanger, 101-Base, 1011-First flange, 1012-Slot, 102-Insulation seat, 103-Heat exchange seat, 104-First insulation cavity, 105-Second insulation cavity, 1031-First turbulence ring, 1032-Second turbulence ring, Positioning slot 10321, 1033-Support foot, 1034-First heat exchange channel, 1035-Second heat exchange channel, 1036-Second flange, 1037-Third flange, 1038-Boss, 1039-Support foot; 2-Insulation materials; 3- Nozzle; 4-Infrared burner; 5-High-intensity infrared radiation combustion plate. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. Many specific details are set forth in the following description to provide a fuller understanding of the present invention; the described embodiments are merely a part of the present invention, not all of it. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the protection scope of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0036] Example 1 See Figures 1-9 This embodiment discloses a high-intensity infrared stove with enhanced heat exchange, including an infrared burner 4 and an enhanced heat exchange device.

[0037] The infrared burner 4 includes an infrared burner head and a high-intensity infrared radiation combustion plate 5, wherein the infrared burner head is connected to the high-intensity infrared radiation combustion plate 5. In this embodiment, the high-intensity infrared radiation combustion plate 5 has an opening ratio of not less than 38%, a microporosity of not less than 20%, and an infrared emissivity of not less than 0.84, thereby improving the combustion stability and radiation efficiency of the infrared stove.

[0038] Furthermore, the high-heat-intensity infrared radiation combustion plate 5 in this embodiment can construct new energy level hierarchies by precisely doping the matrix material with rare earth elements. These newly added energy level structures can significantly reduce the bandgap of the material, making the transition of free carriers from low to high energy levels smoother, thereby enhancing the efficient infrared radiation capability of the combustion plate. Other parts of the infrared burner 4 in this embodiment can be found in the prior art.

[0039] The enhanced heat exchange device in this embodiment includes a heat exchanger 1, a first turbulence ring 1031, a second turbulence ring 1032, and several supports 1033 fixed to the surface of the heat exchanger 1. The first turbulence ring 1031 and the second turbulence ring 1032 are concentrically arranged radially on the surface of the heat exchanger 1. The supports 1033 are higher than the first turbulence ring 1031 and the second turbulence ring 1032. A first heat exchange channel 1034 and a second heat exchange channel 1035 are respectively provided between the first turbulence ring 1031 and the second turbulence ring 1032 and the surface of the heat exchanger 1. In this embodiment, the turbulence rings can be set to one, two, or three, etc., and the specific number can be flexibly set according to the actual situation. In order to be compatible with the stove, the heat exchanger 1 has a through cavity in the middle for compatibility with the infrared burner 4, as detailed in the prior art.

[0040] When the infrared cooktop is working, some of the generated flue gas is discharged outward through the gap between the first baffle ring 1031 and the cookware and the first heat exchange channel 1034. Some of the flue gas forms a vortex after encountering the damping effect of the first baffle ring 1031, reducing its emission velocity. After being discharged through the first baffle ring 1031, some of the flue gas is again forcibly diverted and discharged through the gap between the second baffle ring 1032 and the cookware and the second heat exchange channel 1035. Simultaneously, some of the flue gas again forms a vortex after encountering the damping effect of the second baffle ring 1032, further reducing its emission velocity. Finally, the flue gas discharged after passing through the second baffle ring 1032 is discharged after passing through the outer edge of the energy-concentrating plate. This specially designed exhaust channel can further increase the residence time of high-temperature flue gas. Furthermore, the vortex formed by the damping effect of the first and second baffle rings 1031 and 1032 can further reduce the emission velocity, significantly extending the heat exchange time between the high-temperature flue gas and the cookware, and significantly improving the product's thermal efficiency. Since infrared stoves use flameless combustion, they will not adversely affect the first turbulence ring 1031 and the second turbulence ring 1032 during operation.

[0041] In this embodiment, the first turbulence ring 1031 and the second turbulence ring 1032 are connected to the support leg 1033, and the first turbulence ring 1031 and the second turbulence ring 1032 are separate from the surface of the heat exchanger 1. The support leg 1033 can be fixed to the first turbulence ring 1031 and the second turbulence ring 1032 by welding. The first turbulence ring 1031 and the second turbulence ring 1032 can be provided with corresponding recesses to fit the support leg 1033, and are welded to the lower part of the support leg 1033, so as not to reduce the supporting effect of the support leg 1033 on the cookware; of course, a recess can also be provided on the lower side of the support leg 1033 for fitting the first turbulence ring 1031 and the second turbulence ring 1032. The support leg 1033 can also be fixed to the surface of the heat exchanger 1 by welding. The first turbulence ring 1031 and the second turbulence ring 1032 are separated from the surface of the heat exchanger 1 to form an annular first heat exchange channel 1034 and a second heat exchange channel 1035, which guide the high-temperature flue gas to be discharged evenly.

[0042] Furthermore, in this embodiment, the surface of the heat exchanger 1 is provided with a concave structure, and the outer circumferential edge of the heat exchanger 1 is provided with a protruding structure. See also Figures 4-5 The concave structure formed by the connection of the outer and inner circumferential edges of the surface of heat exchanger 1 can also be designed as an arc or a slope, which can be flexibly adjusted according to actual needs. The heat exchanger 1 in this embodiment can be a cavity-less structure, a single-cavity structure, or a multi-cavity structure. This embodiment selects a heat exchanger 1 with a double-cavity insulation effect, which will be described in detail below. Regardless of the structure chosen for heat exchanger 1, setting its outer circumferential edge as a raised, concave structure can better extend the heat exchange time and reduce heat loss compared to a radial straight discharge method.

[0043] See Figures 4-5 Furthermore, the height difference between the first turbulence ring 1031 and the support leg 1033 (bottom of the pot) is denoted as H1, the height of the first heat exchange channel 1034 is denoted as H2, the height difference between the second turbulence ring 1032 and the support leg 1033 (bottom of the pot) is denoted as H3, the height of the second heat exchange channel 1035 is denoted as H4, and the height difference between the outer edge of the circumference of the heat exchanger 1 and the support leg 1033 is denoted as H5. In this embodiment, the relationship between the above heights is as follows: H1 ≥ H3 ≥ H5. Meanwhile, the following height data are provided as examples for reference: H2 should preferably be set to ≥1mm, and H4 should preferably be set to ≥1mm.

[0044] When H1≥H3≥H5, the flue gas discharged through the gap between the bottom of the pot and the heat exchange seat can, on the one hand, use the first turbulence ring 1031, the second turbulence ring 1032 and the outer edge of the circumference of the heat exchanger 1 to dampen the high-temperature flue gas in sequence, thus prolonging the heat exchange time; on the other hand, it can also guide the high-temperature flue gas to form an upward trend, thereby enhancing the heating effect on the cookware.

[0045] The heat exchanger 1 in this embodiment has a dual-cavity insulation effect. Specifically, it includes a base 101, a heat insulation seat 102, and a heat exchange seat 103 arranged sequentially from bottom to top. The heat exchange seat 103 forms the surface of the heat exchanger 1. The heat insulation seat 102 is located between the base 101 and the heat exchange seat 103. A first heat insulation cavity 104 is provided between the base 101 and the heat insulation seat 102, and a second heat insulation cavity 105 is provided between the heat insulation seat 102 and the heat exchange seat 103. The heat exchanger 1 formed by the base 101, the heat insulation seat 102, and the heat exchange seat 103 has a dual-cavity insulation function, which is beneficial for reducing heat loss and improving thermal efficiency from a vertical dimension.

[0046] Furthermore, in this embodiment, the heat insulation seat 102 is flexibly attached to the base 101, and the heat exchange seat 103 is flexibly attached to either the base 101 or the heat insulation seat 102. The heat exchanger 1, designed in this way, is easy to assemble and disassemble and can be freely separated. Specifically, both the outer and inner circumferential edges of the base 101 protrude upwards, and the outer circumferential edge of the base 101 has a radially outward-facing first flange 1011. The outer circumferential edge of the heat insulation seat 102 overlaps the outer circumferential edge of the base 101, and the inner circumferential edge of the heat insulation seat 102 protrudes upwards and is located within the base 101. The outer circumferential edge of the heat exchange seat 103 bends downwards to form a second flange 1036, and the inner circumferential edge of the heat exchange seat 103 bends downwards to form a third flange 1037; the second flange 1036 overlaps and is supported on the first flange 1011, and the third flange 1037 overlaps and is supported within the inner circumferential edge of the base 101.

[0047] Furthermore, the first flange 1011 has multiple slots 1012 along its circumference; the second flange 1036 has multiple bosses 1038 that fit into the slots 1012; during connection, the bosses 1038 are embedded in the slots 1012. This limits the position between the heat exchange base 103 and the base 101 to prevent displacement. The base 101, the heat insulation base 102, and the inner circumference of the heat exchange base 103 can be interlocked to form a stable assembly, while also allowing for easy disassembly.

[0048] In this embodiment, the heat exchange base 103, heat insulation base 102, and base 101 are freely detachable, and are mutually locked and engaged by the protrusion 1038 on the heat exchange base 103 and the slot 1012 on the base 101. The heat exchange base 103 is placed on the heat insulation base 102, and the heat exchange base 103 and heat insulation base 102 are freely detachable. When it is necessary to separate the heat exchange base 103 and heat insulation base 102, simply lift the heat exchange base 103 off the heat insulation base 102. Similarly, the heat insulation base 102 is placed on the base 101, and the heat insulation base 102 and base 101 are freely detachable. When it is necessary to separate the heat insulation base 102 and base 101, simply lift the heat insulation base 102 off the base 101. This design is simple, low-cost, and highly versatile.

[0049] Of course, as another implementation, the base 101, the heat insulation seat 102 and the heat exchange seat 103 can also be fixed by welding.

[0050] This embodiment also discloses a method for designing the above-mentioned high-heat-intensity infrared stove with enhanced heat exchange, including the following steps: S1. The opening ratio of the high heat intensity infrared radiation combustion plate is designed to be no less than 38%. If the opening ratio is too low, it will affect the uniformity of air-fuel mixture and cause the flue gas to exceed the standard. The microporosity of the high-heat-intensity infrared radiation combustion plate 5 is designed to be no less than 20%. The addition of microporous structure mainly solves the product's heat insulation and anti-backfire performance and further homogenizes the air-fuel ratio. If the microporosity is too low, the product's heat insulation effect will be poor, which will easily cause backfire and affect the flue gas indicators. The infrared emissivity of the high-heat-intensity infrared radiation combustion plate 5 is designed to be no less than 0.84. The level of infrared emissivity mainly depends on the coating with high infrared emissivity, such as the rare earth elements doped in it. Low infrared emissivity affects the radiation efficiency of energy during gas combustion and the thermal efficiency of the product.

[0051] In addition, rare earth elements can be precisely doped into the matrix material of the high-heat-intensity infrared radiation combustion plate 5 to construct new energy level levels. These newly added energy level structures can significantly reduce the band gap of the material, making it easier for free carriers to transition from low energy levels to high energy levels, thereby enhancing the efficient infrared radiation capability of the combustion plate.

[0052] S2. Determine the height difference between each turbulence ring and the support leg, as well as the height difference between the outer edge of the heat exchanger's circumference and the support leg.

[0053] S3. Determine the height of the heat exchange channel formed between each turbulence ring and the surface of the heat exchanger.

[0054] In step S2, the height difference between the first turbulence ring and the support leg is determined to be H1, the height difference between the second turbulence ring and the support leg is determined to be H3, and the height difference between the outer edge of the heat exchanger's circumference and the support leg is determined to be H5; H1 ≥ H3 ≥ H5. In step S3, a first heat exchange channel is formed between the first turbulence ring and the surface of the heat exchanger, and the height of the first heat exchange channel is determined to be H2; a second heat exchange channel is formed between the second turbulence ring and the surface of the heat exchanger, and the height of the second heat exchange channel is determined to be H4; H2 ≥ 1 mm, and H4 ≥ 1 mm.

[0055] To demonstrate the advantages of the above technical solutions, the following experiments were conducted: This example uses a high-intensity infrared stove with enhanced heat exchange. Different opening ratios, emissivity, and microporosity of the high-intensity infrared radiation combustion plates were matched and tested in accordance with the national standard GB 16410-2020 "Household Gas Stoves". The measured data are shown in Tables 1, 2, 3, and 4.

[0056] The national standard GB 16410-2020 "Household Gas Stoves" requires that the CO concentration in dry flue gas be ≤0.05% (i.e. 500ppm). Therefore, the lower the value, the better the mixing and the more complete the combustion.

[0057] The national standard GB 30720-2014, "Energy Efficiency Limits and Energy Efficiency Grades for Household Gas Stoves", requires that energy efficiency grades be divided into three levels, with higher values ​​indicating higher thermal efficiency.

[0058] Table 1 below shows the comparative test data of combustion conditions for a high-intensity infrared stove with enhanced heat exchange according to the present invention, using combustion plates with different opening ratios of high-intensity infrared radiation combustion plates:

[0059] Table 2 below shows the comparative test data of thermal efficiency of the high-intensity infrared stove with enhanced heat exchange according to the present invention, using different emissivity matching of high-intensity infrared radiation combustion plates:

[0060] Table 3 below shows the comparative test data on the anti-backfire performance of a high-heat-intensity infrared stove with enhanced heat exchange according to the present invention, using different microporosities of high-heat-intensity infrared radiation combustion plates:

[0061] Table 4 below shows the comparative test data of flue gas indicators for a high-heat-intensity infrared stove with enhanced heat exchange according to the present invention, using different microporosities of high-heat-intensity infrared radiation combustion plates:

[0062] Example 2 The difference between this implementation and Example 1 is that: See Figures 10-11 The difference between this embodiment and embodiment 1 is that the first turbulence ring 1031, the second turbulence ring 1032, and the support foot 1033 are integrally formed. The second turbulence ring 1032 is provided with a positioning slot 10321, which corresponds to the position of the support foot 1033. A support foot 1039 is provided on the heat exchange base 103 at the position corresponding to the positioning slot 10321. During assembly, the integrally formed first turbulence ring 1031 and second turbulence ring 1032 are directly placed on the support foot 1039, which can further reduce costs and increase efficiency, and improve cost performance.

[0063] Example 3 See Figure 12 The difference between this embodiment and embodiment 1 is that the first heat insulation cavity 104 and the second heat insulation cavity 105 are filled with heat insulation material 2. The type of heat insulation material 2 can be referred to in the prior art, which can further reduce the ineffective heat loss in the vertical dimension.

[0064] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the technical scope of the present invention shall still fall within the technical protection scope of the present invention.

Claims

1. A high-intensity infrared cooker with enhanced heat exchange, characterized in that, It includes an infrared burner and an enhanced heat exchange device; the infrared burner includes an infrared furnace head and a high-intensity infrared radiation combustion plate, and the infrared furnace head is connected to the high-intensity infrared radiation combustion plate; The high-heat-intensity infrared radiation combustion plate has an opening rate of not less than 38%, a microporosity of not less than 20%, and an infrared emissivity of not less than 0.

84. The enhanced heat exchange device includes a heat exchanger, at least one turbulence ring, and several supports fixed to the surface of the heat exchanger; each of the turbulence rings is arranged concentrically in a radial direction on the surface of the heat exchanger, the supports and each of the turbulence rings form a height difference, and a heat exchange channel is provided between each of the turbulence rings and the surface of the heat exchanger.

2. The high-intensity infrared stove with enhanced heat exchange according to claim 1, characterized in that, Each of the aforementioned turbulence rings is connected to the support leg, and each of the aforementioned turbulence rings is separated from the surface of the heat exchanger; the surface of the heat exchanger is concave, and the outer circumferential edge of the heat exchanger is convex.

3. The high-intensity infrared stove with enhanced heat exchange according to claim 1, characterized in that, The system has two turbulence rings, namely a first turbulence ring and a second turbulence ring; the first turbulence ring is located inside the second turbulence ring, and the first turbulence ring and the second turbulence ring are spaced apart.

4. The high-intensity infrared stove with enhanced heat exchange according to claim 3, characterized in that, The height difference between the first turbulence ring and the support foot is H1, the height difference between the second turbulence ring and the support foot is H3, and the height difference between the outer edge of the heat exchanger and the support foot is H5, where H1≥H3≥H5.

5. The high-intensity infrared stove with enhanced heat exchange according to any one of claims 1-4, characterized in that, The heat exchanger includes a base, a heat insulation seat, and a heat exchange seat arranged sequentially from bottom to top. The heat exchange seat is the surface of the heat exchanger. The heat insulation seat is located between the base and the heat exchange seat. A first heat insulation cavity is provided between the base and the heat insulation seat, and a second heat insulation cavity is provided between the heat insulation seat and the heat exchange seat. The heat insulation seat is fixed on the base, and the heat exchange seat is fixed on the base or the heat insulation seat.

6. The high-intensity infrared stove with enhanced heat exchange according to claim 5, characterized in that, The first and second heat insulation cavities are filled with heat insulation material.

7. A method for designing a high-heat-intensity infrared stove with enhanced heat exchange as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. The porosity of the high-heat-intensity infrared radiation combustion plate is designed to be no less than 38%, the microporosity to be no less than 20%, and the infrared emissivity to be no less than 0.

84. S2. Determine the height difference between each turbulence ring and the support leg, as well as the height difference between the outer edge of the heat exchanger's circumference and the support leg; S3. Determine the height of the heat exchange channel formed between each turbulence ring and the surface of the heat exchanger.

8. The method according to claim 7, characterized in that, The system has two turbulence rings, namely a first turbulence ring and a second turbulence ring; the first turbulence ring is located inside the second turbulence ring, and the first turbulence ring and the second turbulence ring are spaced apart; In step S2, the height difference between the first turbulence ring and the support leg is determined to be H1, the height difference between the second turbulence ring and the support leg is determined to be H3, and the height difference between the outer edge of the heat exchanger and the support leg is determined to be H5; H1≥H3≥H5; In step S3, it is determined that a first heat exchange channel is formed between the first turbulence ring and the surface of the heat exchanger, and the height of the first heat exchange channel is H2; it is determined that a second heat exchange channel is formed between the second turbulence ring and the surface of the heat exchanger, and the height of the second heat exchange channel is H4; H2≥1mm and H4≥1mm.

Images