Infrared radiation baking device

Abstract

The invention provides an infrared radiation baking device which comprises a shell, and a combustion chamber is arranged in the shell. The airflow guide piece is used for uniformly guiding and distributing a combustion medium into the combustion chamber; the baking screen plate is arranged in the shell and located above the combustion chamber, the baking screen plate is formed by mutually interweaving a plurality of space straight lines, the space straight lines are mutually interwoven to form a plurality of cube spaces, and the cube spaces are obliquely arranged to form a plurality of cube staggered hole structures; wherein high-temperature flue gas generated by combustion of the combustion medium in the combustion chamber upwards flows into a plurality of cube staggered hole structures on the baking screen plate so as to heat the baking screen plate, and the baking screen plate outwards radiates infrared rays so as to bake and heat a workpiece. The infrared radiation baking device solves the problems that in the prior art, radiation heating equipment is low in heat exchange efficiency, uneven in radiation heating and the like.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking and continuous casting production, in particular to a heat storage baking plate and an infrared radiation baking device with the heat storage baking plate. Background Art

[0002] The baking machine is one of the important equipment for steel baking in the metallurgical field. During operation, the steel needs to be heated to the temperature required by the process in order to meet the requirements of steelmaking.

[0003] At present, when steel components are baked and heated, they are mainly heated by infrared radiation heating devices. However, the existing infrared radiation heating equipment has low infrared radiation heat storage capacity and heat exchange efficiency, and the infrared radiation heating is uneven and the infrared radiation temperature fluctuates greatly. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide an infrared radiation baking device to solve the problems of low heat exchange efficiency, large infrared radiation temperature fluctuation and uneven infrared radiation heating of infrared radiation heating equipment in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides an infrared radiation baking device, comprising a shell, a combustion chamber is arranged inside the shell; an airflow guide, the airflow guide is used to evenly guide and distribute the combustion medium into the combustion chamber; a baking mesh plate, the baking mesh plate is arranged in the shell and above the combustion chamber, the baking mesh plate is formed by a plurality of spatial straight lines interweaving with each other, the plurality of spatial straight lines are interweaving with each other to form a plurality of cubic spaces, and the plurality of the cubic spaces are arranged obliquely to form a plurality of cubic staggered hole structures; wherein the high-temperature flue gas generated by the combustion of the combustion medium in the combustion chamber flows upward into the plurality of cubic staggered hole structures on the baking mesh plate to heat the baking mesh plate, and the baking mesh plate radiates infrared rays outward to bake and heat the workpiece.

[0006] In some embodiments, the size of the cube space is 4.3 mm×4.3 mm×4.3 mm.

[0007] In some embodiments, the baking screen is made of silicon carbide, ceramic or metal.

[0008] In some embodiments, the outer shell includes a frame and a pressure cover, wherein the frame includes four side panels, the four side panels enclose a through installation space that is closed on all sides, and the tops of the four side panels are provided with positioning baffles extending into the through installation space, the pressure cover is arranged at the bottom opening of the frame, and the pressure cover is provided with an air inlet hole; the airflow guide member includes a guide plate, the guide plate is arranged on the inner top wall of the pressure cover, and an airflow gap is provided between the guide plate and the inner walls of the pressure cover for the combustion medium to flow around; a porous combustion heat storage plate is provided in the through installation space and above the guide plate, and a plurality of evenly arranged ventilation nozzles are provided on the porous combustion heat storage plate, and the ventilation nozzles form the combustion chamber.

[0009] In some embodiments, a first sealing gasket is provided between the pressure cover and the porous combustion heat storage plate, the first sealing surface of the first sealing gasket is made of graphite, and the second sealing surface of the first sealing gasket is made of aluminum silicate fiber felt, wherein the first sealing surface is in contact with the pressure cover, and the second sealing surface is in contact with the porous combustion heat storage plate.

[0010] In some embodiments, the guide plate is made of mirror stainless steel, and the infrared heat radiation in the combustion chamber can be reflected to the porous combustion heat storage plate through the mirror stainless steel to reduce the temperature fluctuation amplitude of the porous combustion heat storage plate.

[0011] In some embodiments, the porous combustion heat storage plate is made of cordierite mullite.

[0012] In some embodiments, ceramic mounting strips are provided around the inner periphery of the shell, and four of the ceramic mounting strips enclose a receiving groove, and the baking mesh plate is installed in the receiving groove.

[0013] In some embodiments, the four ceramic mounting strips are respectively a first ceramic mounting strip, a second ceramic mounting strip, a third ceramic mounting strip and a fourth ceramic mounting strip, wherein the first ceramic mounting strip and the third ceramic mounting strip are arranged opposite to each other, and mounting slots are arranged on the inner sides of the first ceramic mounting strip and the third ceramic mounting strip; tenons are respectively arranged on the left and right ends of the baking mesh plate, and the tenons on the left and right ends of the baking mesh plate are respectively embedded in the mounting slots on the first ceramic mounting strip and the mounting slots on the third ceramic mounting strip.

[0014] In some embodiments, the gland and the frame are detachably connected.

[0015] As described above, the infrared radiation baking device of the present invention has the following beneficial effects: since the baking mesh body has a plurality of evenly distributed and staggered cubic staggered hole structures, which are characterized by a large porosity, when the high-temperature flue gas generated by the combustion in the porous combustion heat storage plate flows into the baking mesh, the high-temperature flue gas will repeatedly collide and jump back and forth in the plurality of evenly distributed and staggered cubic staggered hole structures in the baking mesh, thereby improving the collision contact mechanism between the high-temperature flue gas and the baking mesh and enhancing the heat transfer intensity, so that the heat exchange efficiency is significantly improved, and the temperature of the baking mesh is caused to rise sharply to the highest in a short time, so that high-intensity infrared radiation can be quickly generated to bake and heat the workpiece, thereby improving the efficiency of radiation baking. At the same time, because the baking mesh adopts the form of evenly staggered and staggered cubic staggered hole structures, the high-temperature flue gas generated by the combustion continuously collides with the baking mesh, which makes the temperature distribution intensity of the baking mesh more uniform, and the baking intensity of the workpiece more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is an internal cross-sectional view of the infrared radiation baking device provided by the present invention.

[0017] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the baking mesh provided by the present invention.

[0018] Figure 3 Shown is a top view of the baking mesh provided by the present invention.

[0019] Figure 4 Shown is a longitudinal cross-sectional view of the baking screen provided by the present invention.

[0020] Figure 5 Shown is a longitudinal cross-sectional view of the porous combustion plate provided by the present invention.

[0021] Figure 6 Shown is an exploded view of the infrared radiation baking device provided by the present invention.

[0022] Figure 7 Shown is a schematic elevational structural diagram of the infrared radiation baking device provided by the present invention.

[0023] Description of Reference Numerals

[0024] 10. Housing

[0025] 101 Framework

[0026] 102 Gland

[0027] 1010 Through-mounting space)

[0028] 1011 Buckle

[0029] 1020 Air Inlet

[0030] 1021 Spring

[0031] 11 Deflector

[0032] 110 Airflow clearance

[0033] 12 Baking Stencil

[0034] 120 Cube staggered hole structure

[0035] 121 First Ceramic Mounting Strip

[0036] 1210 Mounting slot

[0037] 122 Second ceramic mounting strip

[0038] 123 Third Ceramic Mounting Strip

[0039] 124 Fourth Ceramic Mounting Strip

[0040] 125 Tenon

[0041] 13. Perforated combustion plate

[0042] 131 First gasket

[0043] 132 Second sealing gasket

[0044] 133 Connecting pin

[0045] 1301 Ventilation Nozzle

[0046] 1302 Conical flare DETAILED DESCRIPTION

[0047] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" 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, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0050] See also Figures 1 to 6 It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0051] The present invention provides an infrared radiation baking device, such as Figures 1 to 7 As shown, the infrared radiation baking device includes a shell 10, a combustion chamber is provided inside the shell 10, an airflow guide is provided inside the shell 10, and the airflow guide is used to uniformly guide the combustion medium into the combustion chamber. A baking mesh plate 12 is also provided inside the shell 10, and the baking mesh plate 12 is located above the combustion chamber. Specifically, the baking mesh plate 12 is formed by a plurality of spatial straight lines interlaced with each other, and the plurality of spatial straight lines are interlaced with each other to form a plurality of cubic spaces, and the plurality of cubic spaces are arranged obliquely to form a plurality of cubic staggered hole structures 120; the high-temperature flue gas generated by the combustion of the combustion medium in the combustion chamber flows upward into the cubic staggered holes 120 in the baking mesh plate 12 to heat the baking mesh plate 12, and the baking mesh plate 12 radiates infrared outward to bake and heat the workpiece.

[0052] When the infrared radiation baking device of the present invention is in use, since the baking mesh plate 12 has a plurality of evenly distributed and staggered cubic staggered hole structures 120, when the high-temperature flue gas generated by combustion in the porous combustion chamber flows into the baking mesh plate 12, the high-temperature flue gas will repeatedly collide and jump back and forth in the plurality of evenly distributed and staggered cubic staggered hole structures 120 in the baking mesh plate 12, thereby improving the collision contact mechanism between the high-temperature flue gas and the baking mesh plate 12 and enhancing the heat transfer intensity, so that the heat exchange efficiency is significantly improved, and the temperature of the baking mesh plate 12 is caused to rise sharply to the highest in a short time, so that high-intensity infrared radiation can be quickly generated to bake and heat the workpiece, thereby improving the efficiency of radiation baking. At the same time, because the baking mesh plate 12 adopts the evenly staggered and staggered cubic staggered hole structure 120, the high-temperature flue gas generated by combustion continuously collides with the staggered holes of the baking mesh plate, which makes the temperature distribution intensity of the baking mesh plate more uniform, and the baking intensity of the workpiece more uniform.

[0053] In some embodiments, in order to improve the service life of the baking mesh plate 12, the baking mesh plate is made of silicon carbide, ceramic or metal. Preferably, in this embodiment, the baking mesh plate 12 is made of silicon carbide.

[0054] Specifically, in this embodiment, the size of each of the multiple cubic spaces formed by the plurality of space straight lines interweaving with each other is 4.3 mm×4.3 mm×4.3 mm. Figures 2 to 4 As shown, a plurality of the cubic spaces are arranged obliquely in the vertical direction to form a plurality of cubic staggered hole structures 120, which can be understood as: a plurality of cubic spaces are staggered to form a tree-like divergent through-hole structure, and looking down at the baking mesh plate 12, it can be seen that the shape is a regular triangle vertical through hole with a side length of about 1.8 mm.

[0055] Further, such as Figure 1 and Figure 6As shown, in this embodiment, the shell 10 includes a frame 101 and a gland 102, wherein the frame 101 includes four side panels, the four side panels enclose a through installation space 1010 which is closed on all sides, and the tops of the four side panels are provided with positioning baffles extending into the through installation space 1010; the gland 102 is arranged at the bottom opening of the frame 101, and an air inlet 1020 is provided on the gland 102; specifically, the airflow guide includes a guide plate 11, which is arranged on the inner top wall of the gland 102, and an airflow gap 110 is provided between the guide plate 11 and each inner wall of the gland 102 for the combustion medium to flow around; a porous combustion heat storage plate 13 is provided in the installation space 1010 and above the guide plate 11, and a plurality of evenly arranged air vent nozzles 1301 are provided on the porous combustion heat storage plate 13, and the air vent nozzles 1301 form the combustion chamber. During operation, the combustion medium enters the airflow gap 110 between the inner wall of the pressure cover 102 and the guide plate 11 through the air inlet 1020 on the pressure cover 102, and then the combustion medium will flow to the top of the guide plate 11 more evenly through the airflow gap 110 (in four directions) between the four sides of the guide plate 11 and the inner walls around the pressure cover 102, and then enter the ventilation nozzle 1301 on the porous combustion heat storage plate 13, and then the high-temperature flue gas generated by the combustion of the combustion medium in the ventilation nozzle 1301 on the porous combustion heat storage plate 13 will be uniformly ejected and flowed to the baking mesh plate 12 above, so that the baking mesh plate 12 can be further uniformly heated, so that the baking mesh plate 12 can radiate infrared heat more evenly. Specifically, during actual operation, the flow rate and pressure head of the combustion medium can be reasonably controlled to make the combustion medium stably burn in the ventilation nozzle of the porous combustion heat storage plate 13.

[0056] Specifically, Figure 5 As shown, a conical expansion opening 1302 is provided at the end of the ventilation nozzle 1301 on the porous combustion heat storage plate 13. The design of the conical expansion opening 1302 helps to diffuse and distribute the high-temperature flue gas more evenly in the upper area of ​​the porous combustion heat storage plate 13, thereby improving the heat transfer uniformity and durability of the baking mesh plate 12.

[0057] Furthermore, considering that an oversized porous combustion heat storage plate may cause deformation, it is preferred that Figure 6 As shown, in this embodiment, there are two porous combustion heat storage plates 13 , and the two porous combustion heat storage plates 13 are connected together by a connecting pin 133 .

[0058] Specifically, in this embodiment, the combustion medium is a mixture of air and natural gas. Of course, in other optional embodiments, it can also be a mixture of air and coal gas.

[0059] Furthermore, in order to prevent the combustion medium from burning in the porous combustion heat storage plate 13, the burning flame may jump out of the gap between the pressure cover 102 and the porous combustion heat storage plate 13 to the outside of the frame 101, preferably, as Figure 6 As shown, in this embodiment, a first sealing gasket 131 is provided between the gland 102 and the porous combustion heat storage plate 13, and the first sealing surface material of the first sealing gasket 131 is graphite, and the second sealing surface material of the first sealing gasket 131 is aluminum silicate fiber felt, and the first sealing surface of the first sealing gasket 131 is in contact with the gland 102, and the second sealing surface of the first sealing gasket 131 is in contact with the porous combustion plate 13. Through this structural design, the sealing performance of the infrared radiation baking device can be better improved.

[0060] Furthermore, in order to improve the service life of the guide plate and the porous combustion heat storage plate, the guide plate and the porous combustion heat storage plate are both made of high temperature resistant materials. Specifically, in this embodiment, the guide plate 11 is made of mirror stainless steel, and the porous combustion heat storage plate 13 is made of cordierite mullite. During operation, the guide plate 11 can reflect the infrared rays radiated backward (in the direction of the gland) from the ventilation nozzle 1301 to the porous combustion heat storage plate by using mirror stainless steel, so as to reduce the temperature fluctuation amplitude of the porous combustion heat storage plate.

[0061] Further, in order to prevent the heat loss of the baking mesh plate 12 and improve the heat utilization rate, preferably, in this embodiment, as Figure 6 As shown, ceramic mounting strips are arranged around the inner periphery of the housing 10, and four of the ceramic mounting strips enclose a receiving groove, in which the baking mesh plate 13 is arranged. Through this structural design, the baking mesh plate 12 is installed in the receiving groove enclosed by ceramics, so that the baking mesh plate 12 can be insulated and kept warm by the mounting groove enclosed by ceramics, thereby reducing the heat conduction to the outside of the housing.

[0062] Specifically, Figure 6 As shown, in this embodiment, the four ceramic mounting strips are respectively a first ceramic mounting strip 121, a second ceramic mounting strip 122, a third ceramic mounting strip 123 and a fourth ceramic mounting strip 124, wherein the first ceramic mounting strip 121 and the third ceramic mounting strip 123 are arranged opposite to each other, and mounting slots 1210 are arranged on the inner side of the first ceramic mounting strip 121 and the inner side of the third ceramic mounting strip 123; accordingly, Figure 4 As shown, in this embodiment, the left and right ends of the baking mesh plate 12 are respectively provided with tenons 125, which are respectively inserted into the installation slots 1210 on the first ceramic installation strip 121 and the installation slots 1210 on the third ceramic installation strip 123. This structural design can make the installation and positioning of the baking mesh plate 12 more stable.

[0063] Further, in order to prevent the heat from the through-hole burner on the porous combustion heat storage plate 13 from overflowing from the gap between the porous combustion heat storage plate 13 and the ceramic mounting strip to the outside of the housing, preferably, as Figure 6 As shown, in this embodiment, a second sealing gasket 132 is further provided between the ceramic mounting strip and the porous combustion heat storage plate 13. Specifically, the material of the second sealing gasket 132 is aluminum silicate fiber felt.

[0064] Furthermore, in order to facilitate the later inspection and maintenance of the infrared radiation baking device, preferably, in this embodiment, the pressure cover 102 is detachably connected to the frame 101. Specifically, as Figure 7 As shown, buckles 1011 are provided on the left and right sides of the frame 101, and a spring sheet 1021 is provided on the pressure cover 102. The two ends of the spring sheet 1021 are respectively clamped in the buckles 1011 on the left and right sides of the frame. This design has a simple structure and is easy to disassemble and assemble.

[0065] In summary, the infrared radiation baking device of the present invention is based on the setting of the baking mesh plate, and the porosity of the baking mesh plate is very large, which improves the collision contact mechanism between the high-temperature flue gas and the baking mesh plate 12 and enhances the heat transfer intensity, so that the heat exchange efficiency is significantly improved, and a stable temperature gradient can be maintained, and the combustion is stable while having a high volumetric heat intensity; at the same time, based on the baking mesh plate, a small part of the gas that is not completely burned can be burned again, which can reduce the emission of CO and NOx. Therefore, the present invention can effectively overcome various defects in the prior art and has a high industrial utilization value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An infrared radiation baking device, characterized in that: include: A shell, wherein a combustion chamber is provided inside the shell; An airflow guide, the airflow guide is used to evenly guide and distribute the combustion medium into the combustion chamber; A baking mesh plate, the baking mesh plate is arranged in the shell and above the combustion chamber, the baking mesh plate is formed by a plurality of space straight lines interlaced with each other, the plurality of space straight lines interlaced with each other to form a plurality of cubic spaces, and the plurality of the cubic spaces are arranged obliquely to form a plurality of cubic staggered hole structures; The high-temperature flue gas generated by the combustion of the combustion medium in the combustion chamber flows upward into the multiple cubic staggered hole structures on the baking mesh plate to heat the baking mesh plate, and the baking mesh plate radiates infrared rays outward to bake and heat the workpiece.

2. The infrared radiation baking device according to claim 1, characterized in that: The size of the cube space is 4.3 mm×4.3 mm×4.3 mm.

3. The infrared radiation baking device according to claim 1, characterized in that: The baking screen is made of silicon carbide, ceramic or metal.

4. The infrared radiation baking device according to claim 1, characterized in that: The outer shell includes a frame and a pressure cover, wherein the frame includes four side panels, the four side panels enclose a through installation space which is closed on all sides, and the tops of the four side panels are provided with positioning baffles extending into the through installation space, the pressure cover is arranged at the bottom opening of the frame, and the pressure cover is provided with an air inlet hole; the airflow guide member includes a guide plate, the guide plate is arranged on the inner top wall of the pressure cover, and an airflow gap is provided between the guide plate and the inner walls of the pressure cover for the combustion medium to flow around; a porous combustion heat storage plate is provided in the through installation space and above the guide plate, and a plurality of evenly arranged ventilation nozzles are provided on the porous combustion heat storage plate, and the ventilation nozzles form the combustion chamber.

5. The infrared radiation baking device according to claim 4, characterized in that: A first sealing gasket is provided between the pressure cover and the porous combustion heat storage plate, wherein the first sealing surface of the first sealing gasket is made of graphite, and the second sealing surface of the first sealing gasket is made of aluminum silicate fiber felt, wherein the first sealing surface is in contact with the pressure cover, and the second sealing surface is in contact with the porous combustion heat storage plate.

6. An infrared radiation baking device according to claim 4 or 5, characterized in that: The guide plate is made of mirror stainless steel, and the infrared heat radiation in the combustion chamber can be reflected to the porous combustion heat storage plate through the mirror stainless steel to reduce the temperature fluctuation amplitude of the porous combustion heat storage plate.

7. An infrared radiation baking device according to claim 4 or 5, characterized in that: The porous combustion heat storage plate is made of cordierite mullite.

8. The infrared radiation baking device according to claim 1, characterized in that: Ceramic mounting strips are arranged around the inner periphery of the shell, and four of the ceramic mounting strips enclose a receiving groove, in which the baking mesh plate is installed.

9. The infrared radiation baking device according to claim 8, characterized in that: The four ceramic mounting strips are respectively a first ceramic mounting strip, a second ceramic mounting strip, a third ceramic mounting strip and a fourth ceramic mounting strip, wherein the first ceramic mounting strip and the third ceramic mounting strip are arranged opposite to each other, and mounting slots are arranged on the inner sides of the first ceramic mounting strip and the third ceramic mounting strip; tenons are respectively arranged on the left and right ends of the baking mesh plate, and the tenons on the left and right ends of the baking mesh plate are respectively embedded in the mounting slots on the first ceramic mounting strip and the mounting slots on the third ceramic mounting strip.

10. The infrared radiation baking device according to claim 4, characterized in that: The gland and the frame are detachably connected.

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