Soaking circulation device and heating equipment
By installing a flue gas circulation device with suction pipes and blowing pipes inside the drying furnace, the problem of high-temperature flue gas directly contacting the grain-oriented silicon steel sheet is solved, achieving an efficient and reliable heating process and ensuring product quality and equipment stability.
Patent Information
- Application Number
- CN202423052464.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing drying furnaces, high-temperature flue gas directly contacts the grain-oriented silicon steel sheet, causing burn-off and affecting product quality and equipment reliability.
The system employs a uniform heat circulation device, which uses a suction pipe and a blow pipe design to achieve flue gas circulation through a power component. This avoids direct contact between high-temperature flue gas and the product. Combined with the design of inclined side walls and flow area, it ensures that the flue gas circulates within the furnace, reducing the temperature and heating it evenly.
This effectively avoids product burn damage caused by high-temperature flue gas, improves the reliability and heating effect of heating equipment, and ensures product quality.
Smart Images
Figure CN223642203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating equipment technology, and in particular to a heat equalization circulation device and heating equipment. Background Technology
[0002] The insulating coatings on the surface of grain-oriented silicon steel mainly fall into three categories: inorganic coatings, organic coatings, and semi-inorganic coatings. The coatings on the surface of grain-oriented silicon steel are typically dried in a drying oven.
[0003] In existing technology, the drying furnace has an inner cavity, and oriented silicon steel is dried in the form of steel sheet or strip. The steel sheet or strip is transported by tension rollers set at the two furnace openings, thus achieving non-contact passage through the drying furnace. Burners are installed on the inner wall of the drying furnace, releasing heat into the furnace to dry the steel sheet or strip. To improve the drying effect, the burners are usually porous media burners, upgrading the heating method from traditional flame heating to gas-fired infrared drying, significantly reducing the height of the drying furnace. However, due to the smaller furnace height, and the fact that the heat source temperature of the gas combustion is approximately 1000℃ during the operation of the porous media burner, the burner is close to the steel sheet or strip, making the surface of the steel sheet or strip susceptible to burning at high temperatures, resulting in quality defects and low reliability. Utility Model Content
[0004] The first objective of this utility model is to provide a heat equalization circulation device that can prevent high-temperature flue gas from directly contacting the product and burning the product, thus ensuring product quality and having high reliability.
[0005] The second objective of this invention is to provide a heating device with high reliability.
[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:
[0007] A heat equalization circulation device is provided for use in heating equipment, comprising:
[0008] A manifold cavity is installed in the furnace body of the heating equipment;
[0009] A suction pipe is connected to the manifold cavity, and the suction pipe is provided with multiple suction holes. The suction pipe is located inside the furnace body.
[0010] A blow pipe is connected to the manifold cavity, and the blow pipe is provided with multiple outlet holes. The blow pipe is located inside the furnace body and is spaced apart from the suction pipe.
[0011] A power assembly configured to draw flue gas from the suction pipe into the manifold and to pressurize the flue gas in the manifold to the blow pipe; the amount of fluid drawn into the suction pipe per unit time through the suction orifice is greater than or equal to the amount of fluid blown out per unit time through the outlet orifice.
[0012] Optionally, the sum of the flow areas of the plurality of suction holes is greater than the sum of the flow areas of the plurality of outlet holes.
[0013] Optionally, the blowing pipe has a first inclined sidewall, which is located on the side of the blowing pipe near the porous medium heating assembly and facing the product inside the furnace, and a plurality of the outlet holes are located on the first inclined sidewall.
[0014] The suction pipe has a second inclined sidewall, which is located on the side of the suction pipe near the porous medium heating assembly and facing the product inside the furnace. A plurality of suction holes are provided on the second inclined sidewall.
[0015] The area of the second inclined sidewall is greater than the area of the first inclined sidewall.
[0016] Optionally, the angle between the plane containing the first inclined sidewall and the horizontal plane is 40°-50°; the angle between the plane containing the second inclined sidewall and the horizontal plane is 40°-50°.
[0017] Optionally, the blowing tube has a first end in the extending direction and a second end disposed opposite to the first end, the first end being closer to the confluence cavity than the second end;
[0018] Along the direction from the second end to the first end, the flow area of the blowing pipe gradually increases; or, along the direction from the second end to the first end, the flow area of the blowing pipe is the same, and the flow area of the outlet hole gradually decreases.
[0019] Optionally, the suction tube has a third end in the extending direction and a fourth end disposed opposite to the third end, the third end being closer to the manifold cavity than the fourth end;
[0020] Along the direction from the fourth end to the third end, the flow area of the suction tube gradually increases; or, along the direction from the fourth end to the third end, the flow area of the suction tube remains the same, and the flow area of the suction hole gradually decreases.
[0021] Optionally, two suction pipes and two blowing pipes are provided in a one-to-one correspondence. The two suction pipes are spaced apart in a first direction, and the two blowing pipes are spaced apart in the first direction. The corresponding suction pipes and blowing pipes are spaced apart in a second direction. The first direction is the height direction of the furnace body, and the second direction is perpendicular to the first direction.
[0022] Optionally, the heat exchange circulation device further includes a drain pipe and a control valve disposed on the drain pipe. One end of the drain pipe is connected to the manifold, and the other end of the drain pipe extends to the outside of the furnace body. The power unit is configured to draw air from outside the furnace body to the manifold through the drain pipe, and the control valve is configured to control the flow area of the drain pipe.
[0023] A heating device is provided, including the heat equalization circulation device as described above. The heating device further includes a furnace body, the manifold is installed in the furnace body, and the suction pipe and the blowing pipe are both disposed in the furnace body.
[0024] Optionally, the heating device further includes a porous medium heating component, which is installed in the furnace body and used to release flue gas into the furnace body;
[0025] Each of the porous medium heating component and the heat equalization circulation device is provided, and the suction pipe and the blowing pipe of the heat equalization circulation device are provided on both sides of the porous medium heating component; or, multiple porous medium heating components and the heat equalization circulation device are provided in a corresponding manner, and the suction pipe and the blowing pipe of the heat equalization circulation device are provided on both sides of the corresponding porous medium heating component.
[0026] The beneficial effects of this utility model are:
[0027] The heat exchange circulation device and heating equipment provided by this utility model include a suction pipe and a blowing pipe inside the furnace. The power component generates negative pressure in the suction pipe, allowing the high-temperature flue gas inside the furnace to enter the suction pipe through the suction hole under the suction of the power component and flow to the confluence chamber. The flue gas in the confluence chamber enters the blowing pipe under the action of the power component and is blown out of the outlet hole into the furnace under the high pressure drive of the power component, realizing the circulation of flue gas. The high-temperature flue gas flows from the suction pipe to the confluence chamber, so that even if the distance between the product and the heat source inside the furnace is small, the high-temperature flue gas will not blow directly onto the product. Even if the high-temperature flue gas comes into contact with the product, under the suction action of the power component, the high-temperature flue gas quickly passes over the product, so that the contact time between the high-temperature flue gas and the product is very short, which can avoid the high-temperature flue gas from burning the product, ensuring the quality of the product and improving the reliability of the heating equipment. Furthermore, the amount of fluid drawn into the suction pipe per unit time through the suction hole is greater than or equal to the amount of fluid blown out of the blow pipe per unit time through the outlet hole. This ensures that the suction pipe draws in sufficient airflow, thereby ensuring that there is enough fluid in the manifold. This allows the power component to pressurize the fluid in the manifold, giving the fluid blown out of the blow pipe a certain pressure to ensure contact with the product, thus improving the heating effect on the product. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0029] Figure 1 This is a cross-sectional view of the heating device provided in an embodiment of the present utility model;
[0030] Figure 2 This is a utility model Figure 1 The enlarged view of point A shown;
[0031] Figure 3 This is a first structural schematic diagram of the flue gas recirculation device provided in this embodiment of the utility model;
[0032] Figure 4 This is a schematic diagram of the structure of the blowing pipe provided in this embodiment of the utility model;
[0033] Figure 5 This is a utility model Figure 4 The BB section view shown;
[0034] Figure 6This is a schematic diagram of the second structure of the flue gas recirculation device provided in this embodiment of the utility model;
[0035] Figure 7 This is a schematic diagram of the third structure of the flue gas recirculation device provided in this embodiment of the utility model.
[0036] In the picture:
[0037] 1. Combustion chamber; 2. Suction pipe; 21. Suction hole; 22. Second inclined sidewall; 23. Third end; 24. Fourth end; 3. Blowing pipe; 31. First inclined sidewall; 32. Outlet hole; 33. First end; 34. Second end; 4. Power assembly; 5. First connecting pipe; 6. Second connecting pipe; 7. Drain pipe; 8. Control valve; 9. Support component; 10. Furnace body; 20. Porous medium heating assembly; 30. Flue gas circulation device; 100. Product; X, Third direction; Y, Second direction; Z, First direction. Detailed Implementation
[0038] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0040] In the description of this utility model, 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 utility model based on the specific circumstances.
[0041] In this utility model, 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. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.
[0042] 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0043] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.
[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0045] Firstly, this embodiment provides a flue gas recirculation device applied to a heating device used to heat products located within it. Since the heating component of this device is a porous medium heating component, it radiates infrared radiation to the product surface using wavelengths corresponding to the absorption peak of water, causing moisture evaporation and achieving the purpose of drying the product. To achieve better radiation effects, the porous medium heating component is placed close to the product surface, and the high-temperature flue gas emitted may cause localized high temperatures on the product surface, potentially leading to surface burns. The heating device in this embodiment, by incorporating a flue gas recirculation device, avoids product burns caused by high-temperature flue gas, ensuring product quality, improving the reliability of the heating device, and also maintaining the pressure of the flue gas flowing out of the blowpipe. The product in this embodiment can be a steel plate or steel strip.
[0046] Example 1
[0047] like Figures 1 to 3As shown, the heat exchange circulation device 30 includes a manifold 1, a suction pipe 2, a blowing pipe 3, and a power assembly 4. The manifold 1 is installed on the furnace body 10 of the heating equipment. The manifold 1 can be located outside the furnace body 10, embedded in the furnace body 10, or located inside the furnace body 10; this embodiment does not limit this.
[0048] like Figure 3 As shown, the suction pipe 2 is connected to the manifold 1, allowing the flue gas in the suction pipe 2 to flow into the manifold 1. Furthermore, the suction pipe 2 is provided with multiple suction holes 21. The suction pipe 2 is located inside the furnace body 10, allowing the flue gas inside the furnace body 10 to enter the suction pipe 2 through the multiple suction holes 21.
[0049] In this embodiment, the blowing pipe 3 is connected to the manifold 1, allowing the flue gas in the manifold 1 to flow to the blowing pipe 3. Furthermore, the blowing pipe 3 is provided with multiple outlet holes 32. The blowing pipe 3 is located inside the furnace body 10, allowing the flue gas inside the blowing pipe 3 to be blown into the furnace body 10. The suction pipe 2 and the blowing pipe 3 are spaced apart, so that the suction pipe 2, the blowing pipe 3, and the manifold 1 cooperate to form a flue gas circulation path.
[0050] In this embodiment, the power component 4 is configured to draw the flue gas from the suction pipe 2 into the manifold 1, and to pressurize the flue gas in the manifold 1 into the blow pipe 3, thereby providing power for the flow of the flue gas in the circulation path. Exemplarily, the power component 4 can be a fan, a blower, or other power equipment, and this embodiment does not limit it to this.
[0051] In this embodiment, the amount of fluid drawn into the suction pipe 2 through the suction hole 21 per unit time is greater than or equal to the amount of fluid blown out through the outlet hole 32 per unit time, so as to ensure that the suction pipe 2 draws in enough air volume, and thus has sufficient air pressure when blowing through the outlet pipe 3, so as to better heat the product 100 without burning the product.
[0052] The heat exchange circulation device 30 provided in this embodiment has a suction pipe 2 and a blowing pipe 3 inside the furnace body 10. The power component 4 generates a negative pressure in the suction pipe 2, so that the high-temperature flue gas in the furnace body 10 can enter the suction pipe 2 through the suction hole 21 under the suction of the power component 4 and flow to the confluence chamber 1. The flue gas in the confluence chamber 1 enters the blowing pipe 3 under the action of the power component 4, and is blown out into the furnace body 10 through the outlet hole 32 under the high pressure drive of the power component 4, realizing the circulation of flue gas. The temperature of the high-temperature flue gas decreases during the process of flowing from the suction pipe 2 to the confluence chamber 1 and from the confluence chamber 1 to the blowing pipe 3. This ensures that even if the distance between the product 100 and the heat source in the furnace body 10 is small, the high-temperature flue gas will not be blown directly onto the product 100, thus avoiding the burning of the product by the high-temperature flue gas, ensuring the quality of the product 100, and improving the reliability of the heating equipment. Furthermore, the amount of fluid drawn into the suction pipe 2 per unit time through the suction hole 21 is greater than or equal to the amount of fluid blown out of the blowing pipe 3 per unit time through the outlet hole 32. This ensures that the suction pipe 2 draws in sufficient airflow, thereby ensuring that there is sufficient fluid in the manifold 1. This allows the power component 4 to pressurize the fluid in the manifold 1, giving the fluid blown out of the blowing pipe 3 a certain pressure to ensure contact with the product, thus improving the heating effect on the product. It should be noted that the fluid in this embodiment can be flue gas.
[0053] For example, a porous medium heating component 20 is provided inside the furnace body 10. The porous medium heating component 20 is used to release high-temperature flue gas, thereby heating the product 100. In some optional embodiments, one or more porous medium heating components 20 may be provided. When multiple porous medium heating components 20 are provided, the multiple porous medium heating components 20 are spaced apart along the length direction of the furnace body 10.
[0054] In some optional embodiments, the blowing pipe 3 has a first inclined sidewall 31, and a plurality of outlet holes 32 are disposed on the first inclined sidewall 31. The first inclined sidewall 31 is disposed on the side of the blowing pipe 3 near the porous medium heating assembly 20 and faces the product 100 inside the furnace body 10. It should be noted that when there is one porous medium heating assembly 20 inside the furnace body 10, the first inclined sidewall 31 is disposed on the side of the blowing pipe 3 near that one porous medium heating assembly 20. When there are multiple porous medium heating assemblies 20 inside the furnace body 10, such as Figure 1 As shown, there are multiple heat equalization circulation devices 30, and each heat equalization circulation device 30 corresponds to a multiple porous medium heating component 20. The first inclined sidewall 31 of the blowing pipe 3 of each heat equalization circulation device 30 is located on the side of the blowing pipe 3 close to the corresponding porous medium heating component 20.
[0055] Optionally, such as Figure 4 and Figure 5As shown, the angle b between the plane containing the first inclined sidewall 31 and the horizontal plane ranges from 40° to 50°. If the angle between the plane containing the first inclined sidewall 31 and the horizontal plane is too large, the first inclined sidewall 31 approaches a vertical plane, resulting in a smaller area of the first inclined sidewall 31, which in turn leads to a smaller arrangement area of the outlet holes 32, thus affecting the amount of smoke blown. Furthermore, the smoke blown from the outlet holes 32 on the first inclined sidewall 31 will not be directed towards the product 100, affecting the heating efficiency of the product 100. If the angle between the plane containing the first inclined sidewall 31 and the horizontal plane is too small, the first inclined sidewall 31 approaches a horizontal plane, which also affects the arrangement area of the outlet holes 32. Moreover, the smoke blown from the outlet holes 32 on the first inclined sidewall 31 will directly blow onto the product 100, which may cause product burn. For example, the angle b between the plane containing the first inclined sidewall 31 and the horizontal plane is 40°, 42°, 45°, 48°, or 50°. It should be noted that the product is plate-shaped, and the thickness direction of product 100 is vertical, that is, the top and bottom surfaces of product 100 are parallel to the horizontal plane.
[0056] In this embodiment, the inclination direction of the first inclined sidewall 31 allows the flue gas blown out by the first inclined sidewall 31 to mix with the high-temperature flue gas released by the porous medium heating component 20, thereby reducing the temperature of the high-temperature flue gas and further preventing the high-temperature flue gas from directly contacting the product 100, thus further improving reliability.
[0057] In some alternative embodiments, such as Figure 2 As shown, the suction pipe 2 has a second inclined sidewall 22. The second inclined sidewall 22 is located on the side of the suction pipe 2 near the porous medium heating assembly 20 and faces the product 100 inside the furnace body 10. In this embodiment, the suction holes 21 are located on the second inclined sidewall 22. By setting the second inclined sidewall 22, the arrangement area of the suction holes 21 can be larger, thereby allowing for the arrangement of more suction holes 21. Furthermore, the second inclined sidewall 22 is located on the side of the suction pipe 2 near the porous medium heating assembly 20 and facing the product 100 inside the furnace body 10, so that as much heat released by the porous medium heating assembly 20 as possible can be drawn into the suction pipe 2, thereby reducing the probability of high-temperature flue gas directly contacting the product 100.
[0058] For example, the angle between the plane containing the second inclined sidewall 22 and the horizontal plane ranges from 40° to 50°. For instance, the angle between the plane containing the second inclined sidewall 22 and the horizontal plane is 40°, 42°, 45°, 48°, or 50°.
[0059] For example, such as Figure 3 or Figure 7As shown, the blowing pipe 3 has a first end 33 extending in the direction of extension and a second end 34 disposed opposite to the first end 33. The first end 33 is closer to the confluence cavity 1 than the second end 34. In this embodiment, the extension direction of the blowing pipe 3 is the third direction X, and the suction pipe 2 also extends along the third direction X. Any two of the third direction X, the second direction Y, and the first direction Z are perpendicular to each other.
[0060] In some optional embodiments, the flow area of the blowing pipe 3 gradually increases along the direction from the second end 34 to the first end 33; that is, the blowing pipe 3 is a tapering pipe along the direction from the first end 33 to the second end 34. The flow area of the blowing pipe 3 is the longitudinal cross-sectional area of the inner cavity of the blowing pipe 3. This ensures that the pressure at all positions along the third direction X of the blowing pipe 3 is consistent, thereby ensuring the uniformity of the flue gas blown into the furnace body 10, and thus ensuring the uniformity of the flue gas distribution within the furnace body 10, improving the heating effect on the product 100, and avoiding a situation where the second end 34, which is far from the power component 4, experiences reduced flue gas flow due to insufficient gas pressure. It should be noted that in this embodiment, the orifices 32 have the same diameter.
[0061] In some alternative embodiments, the suction tube 2 has a third end 23 in the extending direction (i.e., the third direction X) and a fourth end 24 disposed opposite to the third end 23, wherein the third end 23 is closer to the manifold 1 than the fourth end 24.
[0062] In this embodiment, the flow area of the suction pipe 2 gradually increases along the direction from the fourth end 24 to the third end 23; that is, the suction pipe 2 is a tapering pipe from the third end 23 to the fourth end 24. The flow area of the suction pipe 2 is the total cross-sectional area of its inner cavity. This ensures that the suction force of the suction pipe 2 is consistent at all positions along the third direction X, guaranteeing that all high-temperature flue gas near the suction pipe 2 is drawn into it, reducing the probability of high-temperature flue gas leakage, and preventing the fourth end 24, which is far from the power component 4, from failing to effectively extract high-temperature flue gas due to insufficient suction force, thus improving the efficiency of flue gas circulation. It should be noted that in this embodiment, the apertures of the multiple suction holes 21 are the same.
[0063] In some optional embodiments, the length of the suction pipe 2 in the third direction X is greater than the length of the product 100 in the third direction X, and the orthogonal projection of the suction pipe 2 on the product 100 penetrates the product 100, to prevent high-temperature flue gas from being directly blown onto the product 100. Similarly, the length of the blowing pipe 3 in the third direction X is greater than the length of the product 100 in the third direction X, and the orthogonal projection of the blowing pipe 3 on the product 100 penetrates the product 100, so that the flue gas blown out by the blowing pipe 3 can evenly contact various positions of the product 100 in the third direction X, thereby ensuring the heating effect on the product 100.
[0064] In some optional embodiments, both the suction pipe 2 and the blowing pipe 3 can be polygonal pipes, or they can be arc-shaped pipes, elliptical pipes, etc. This embodiment does not limit them.
[0065] Optionally, the product 100 can be suspended inside the furnace body 10. In this embodiment, each porous medium heating assembly 20 includes two porous medium heaters 201, one of which is located at the top of the furnace body 10 and the other at the bottom. The porous medium heater 201 at the top of the furnace body 10 is used to heat the top surface of the product 100, and the porous medium heater 201 at the bottom of the furnace body 10 is used to heat the bottom surface of the product 100.
[0066] In this embodiment, two suction pipes 2 and two blowing pipes 3 are provided in a one-to-one correspondence. The two suction pipes 2 are spaced apart in the first direction Z, and the two blowing pipes 3 are spaced apart in the first direction Z. Corresponding suction pipes 2 and blowing pipes 3 are spaced apart in the second direction Y. Wherein, the first direction Z is the height direction of the furnace body 10. Figure 1 In this diagram, the first direction Z is the vertical direction, the second direction Y is perpendicular to the first direction Z, and the second direction Y is the length direction of the furnace body 10. The conveying direction of the product 100 within the furnace body 10 is the length direction of the furnace body 10, and the width direction of the furnace body 10 is referred to as the third direction X. By setting two sets of suction pipes 2 and blowing pipes 3, one set of suction pipes 2 and blowing pipes 3 can circulate the high-temperature flue gas released by the porous medium heating component 20 at the top of the furnace body 10 to avoid burning the top surface of the product 100; the other set of suction pipes 2 and blowing pipes 3 can circulate the high-temperature flue gas released by the porous medium heating component 20 at the bottom of the furnace body 10 to avoid burning the bottom surface of the product 100. This ensures that neither the top nor bottom surface of the product 100 is burned, further improving the reliability of the heating equipment and guaranteeing the quality of the product 100.
[0067] Optionally, one set of suction pipes 2 and blowing pipes 3 is configured to abut against the inner top wall of the furnace body 10, and another set of suction pipes 2 and blowing pipes 3 is configured to abut against the inner bottom wall of the furnace body 10. This ensures that the blowing pipes 3 are not too close to the product 100, thus preventing damage to the product 100. Furthermore, by abutting against the furnace body 10, the suction pipes 2 and blowing pipes 3 do not vibrate violently, improving their stability and ensuring that the blowing pipes 3 blow out flue gas in a certain direction. For example, the surfaces of the suction pipes 2 and blowing pipes 3 that abut against the furnace body 10 are both flat, further improving the abutment effect.
[0068] For example, such as Figure 3 or Figure 6As shown, the heat equalization circulation device 30 also includes two support members 9. One end of the support member 9 is connected to the second end 34 of the blow pipe 3 near the top of the furnace body 10, and the other end is connected to the furnace body 10, so as to fix the blow pipe 3 more firmly on the furnace body 10 and further improve the stability of the blow pipe 3.
[0069] In this embodiment, as Figure 7 As shown, the suction pipe 2 has a third end 23 extending in the direction of extension and a fourth end 24 disposed opposite to the third end 23, with the third end 23 close to the manifold 1 relative to the fourth end 24. One end of the other of the two carriers 9 is connected to the fourth end 24 of the suction pipe 2 near the top of the furnace body 10, and the other end is connected to the furnace body 10, so as to fix the suction pipe 2 more firmly to the furnace body 10 and further improve the stability of the suction pipe 2.
[0070] Optionally, the load-bearing member 9 can be a hanger or other rod-like structure.
[0071] For example, such as Figure 3 As shown, the heat exchanger 30 also includes a first connecting pipe 5. The first connecting pipe 5 connects the manifold 1 and the suction pipe 2, and the suction pipe 2 and the first connecting pipe 5 are detachably connected. By providing the first connecting pipe 5, communication between the manifold 1 and the suction pipe 2 can be achieved; furthermore, it facilitates the disassembly, cleaning, or replacement of the suction pipe 2. For example, the manifold 1 is located outside the furnace body 10, the first connecting pipe 5 passes through the furnace body 10, and the connection point between the suction pipe 2 and the first connecting pipe 5 can be located inside the furnace body 10, facilitating the disassembly of the first connecting pipe 5 and the suction pipe 2. Of course, it is understandable that the first connecting pipe 5 can also be located outside the furnace body 10, with the suction pipe 2 passing through the furnace body 10 and connecting to the first connecting pipe 5, which also facilitates the disassembly of the suction pipe 2. Since the suction pipe 2 is used to draw smoke through the suction hole 21, the suction hole 21 may become clogged after prolonged use, affecting the uniformity of smoke extraction. Therefore, by providing an easily detachable suction pipe 2, maintenance efficiency can be improved.
[0072] Optionally, the heat exchanger 30 further includes a second connecting pipe 6. The second connecting pipe 6 connects the manifold 1 and the blowing pipe 3, and the blowing pipe 3 and the second connecting pipe 6 are detachably connected. By providing the second connecting pipe 6, communication between the manifold 1 and the blowing pipe 3 can be achieved; furthermore, it facilitates the disassembly, cleaning, or replacement of the blowing pipe 3. For example, the manifold 1 is located outside the furnace body 10, the second connecting pipe 6 passes through the furnace body 10, and the connection point between the blowing pipe 3 and the second connecting pipe 6 can be located inside the furnace body 10, facilitating the disassembly of the second connecting pipe 6 and the blowing pipe 3. Of course, it is understood that the second connecting pipe 6 can also be located outside the furnace body 10, with the blowing pipe 3 passing through the furnace body 10 and connecting to the second connecting pipe 6, which also facilitates the disassembly of the blowing pipe 3. Since the smoke pipe is used to blow smoke through the outlet hole 32, the outlet hole 32 may become clogged after prolonged use, affecting the uniformity of smoke blowing. Therefore, by providing an easily detachable blowing pipe 3, maintenance efficiency can be improved.
[0073] In some optional embodiments, the second connecting pipe 6 is L-shaped, with one end extending along the second direction Y connected to the manifold 1 and the other end connected to the blowing pipe 3. This ensures that the suction pipe 2 and the blowing pipe 3 are positioned on opposite sides of the porous medium heating assembly 20 along the second direction Y. The first connecting pipe 5 is straight, making the manifold 1 and the power assembly 4 close to the suction pipe 2, thereby allowing the suction pipe 2 to have greater suction force to ensure that as much high-temperature flue gas as possible is drawn in.
[0074] Optionally, the flow area of the second connecting pipe 6 is larger than that of the blowing pipe 3, so that when the flue gas flows from the second connecting pipe 6 to the blowing pipe 3, the flow area will decrease. According to the principle of energy conservation, the flue gas can be pressurized to ensure the flow rate of the flue gas blown out of the smoke hole, so that the flue gas can come into contact with the product 100 and ensure the heating effect.
[0075] In some optional embodiments, the amount of fluid drawn into the suction pipe 2 per unit time through the suction hole 21 is greater than or equal to the amount of fluid blown out of the blowing pipe 3 per unit time through the outlet hole 32, so as to ensure that the suction pipe 2 draws in enough air volume, and thus has sufficient air pressure when blowing through the blowing pipe 3, so as to better heat the product 100 without burning the product 100.
[0076] There are various ways to control the amount of fluid drawn into the suction tube 2 per unit time to be greater than or equal to the amount of fluid blown out through the outlet hole 32 per unit time. For example, this can be achieved by controlling the areas of the suction hole 21 and the outlet hole 32.
[0077] For example, the sum of the flow areas of the multiple suction holes 21 is greater than the sum of the flow areas of the multiple outlet holes 32, so that the inlet area of the suction pipe 2 can be larger, thereby ensuring that more flue gas can enter the suction pipe 2. The outlet area of the blowing pipe 3 is larger, so as to realize the high-pressure ejection of flue gas, so as to fully contact the product 100 and achieve the ideal effect.
[0078] Alternatively, the sum of the flow areas of the multiple suction holes 21 can be made greater than the sum of the flow areas of the multiple outlet holes 32 by controlling the number of suction holes 21 and outlet holes 32. In this case, as... Figure 2 As shown, the area of the first inclined sidewall 31 with multiple outflow holes 32 is smaller than the area of the second inclined sidewall 22 with multiple suction holes 21, so that the suction holes 21 have a larger arrangement area, and thus more suction holes 21 can be set.
[0079] In some alternative embodiments, the vertical cross-section of the suction pipe 2 is larger than that of the blowing pipe 3. In this way, the suction pipe 2 can carry more flue gas than the blowing pipe 3, thereby increasing the amount of flue gas flowing through the suction pipe 2 into the manifold 1, and thus ensuring that the flue gas is ejected from the blowing pipe 3 at high pressure.
[0080] Optionally, such as Figure 3 and Figure 6 As shown, the heat exchange circulation device 30 also includes a diversion pipe 7 and a control valve 8 disposed on the diversion pipe 7. One end of the diversion pipe 7 is connected to the manifold 1, and the other end extends to the outside of the furnace body 10. The power unit 4 is configured to draw air from outside the furnace body 10 into the manifold 1 through the diversion pipe 7, and the control valve 8 is configured to control the flow area of the diversion pipe 7. When the flow area of the diversion pipe 7 is not zero, air from outside the furnace body 10 can enter the manifold 1 through the diversion pipe 7 and mix with the flue gas inside the manifold 1. When the flow area of the diversion pipe 7 is zero, air from outside the furnace body 10 cannot enter the manifold 1 through the diversion pipe 7.
[0081] During the operation of the heating equipment, when encountering abnormal production processes or shearing / coiling changes, the running speed of product 100 within the furnace body 10 will drop to 0. To prevent overheating of product 100, the heating power of the heating equipment needs to be reduced as quickly as possible. However, when product 100 returns to normal speed, the heating power needs to be restored to its normal value as quickly as possible. However, the furnace body 10 is typically composed of an external steel structure shell and internal insulation material. During the cooling and heating processes of the furnace body 10, the heat storage capacity of the insulation material is a significant limiting factor, which can be understood as a kind of "thermal inertia," that is, the prolonged cooling process.
[0082] In this embodiment, by setting up the diversion pipe 7, when it is necessary to quickly cool down the furnace body 10 and quickly reduce the moisture content in the atmosphere inside the furnace body 10, the control valve 8 is opened to the corresponding degree. Through the suction force of the power component 4 (e.g., a circulating fan), air is drawn in from outside the furnace body 10 through the diversion pipe 7 and sent into the furnace body 10 through the blowing pipe 3, so that the temperature inside the furnace body 10 can be quickly reduced, shortening the cooling process time.
[0083] Furthermore, the furnace body 10 is typically equipped with an exhaust pipe (not shown in the figure) to discharge the flue gas inside the furnace. If no external air is introduced, only the amount of flue gas generated by the combustion of the porous medium heating element 20 is discharged through the exhaust pipe. However, in this embodiment, by setting up the diversion pipe 7, cold air from outside the furnace body 10 can be introduced into the furnace body, so that the furnace body 10 contains not only flue gas but also introduced air. At this time, the exhaust volume of the exhaust pipe is the sum of the flue gas volume and the air volume, which increases the exhaust volume. The larger exhaust volume can remove more moisture from the furnace body, thereby reducing the humidity inside the furnace body.
[0084] It should be noted that when air from outside the furnace body 10 needs to be introduced through the drain pipe 7, the power of the power component 4 (e.g., the circulating fan) needs to be increased. If the power of the power component 4 remains unchanged, the addition of outside air will reduce the amount of fluid drawn through the suction pipe 2, thus failing to achieve the purpose of not burning the product and reducing the humidity inside the furnace.
[0085] The heat exchange circulation device 30 provided in this embodiment has suction pipes 2 and blowing pipes 3 installed on both sides inside the furnace body 10. The suction force generated by the power component 4 draws in high-temperature flue gas through the suction pipes 2, avoiding direct contact with the product surface. The drawn-in high-temperature flue gas enters the manifold 1 from the suction pipes 2, and is then sent back into the furnace through the blowing pipes by the power component 4. This achieves flue gas circulation and avoids energy waste. Furthermore, under the action of the power component 4 (e.g., a fan), the flue gas drawn in from various parts of the furnace body 10 in the width direction is fully mixed before being blown out into the furnace body 10, which increases temperature uniformity.
[0086] Example 2
[0087] The difference between this embodiment and Embodiment 1 lies in the structure of the blowpipe 3.
[0088] Specifically, in this embodiment, the flow area of the blowing pipe 3 is the same along the direction from the second end 34 to the first end 33, and the flow area of the outlet hole 32 gradually decreases. This ensures that the pressure at all positions along the third direction X of the blowing pipe 3 is consistent, guaranteeing the uniformity of the flue gas blown into the furnace body 10. This, in turn, ensures the uniformity of the flue gas distribution within the furnace body 10, improving the heating effect on the product 100 and preventing a reduction in flue gas flow due to insufficient gas pressure at the second end 34, which is farther from the power component 4.
[0089] The other structures in this embodiment are similar to those in Embodiment 1 and have similar beneficial effects, so they will not be described in detail here.
[0090] Example 3
[0091] The difference between this embodiment and Embodiment 1 lies in the structure of the suction tube 2.
[0092] Specifically, in this embodiment, the flow area of the suction pipe 2 is the same from the fourth end 24 to the third end 23, and the flow area of the suction hole 21 gradually decreases. This ensures that the suction force of the suction pipe 2 is consistent at all positions along the third direction X, guaranteeing that all high-temperature flue gas near the suction pipe 2 in the furnace body 10 is drawn into the suction pipe 2, reducing the probability of high-temperature flue gas leakage, and preventing the fourth end 24, which is far from the power component 4, from being unable to effectively extract high-temperature flue gas due to insufficient suction force, thus improving the efficiency of flue gas circulation.
[0093] The other structures in this embodiment are similar to those in Embodiment 1 and have similar beneficial effects, so they will not be described in detail here.
[0094] Secondly, this embodiment provides a heating device, such as... Figure 1 and Figure 2 As shown, the heating equipment includes the heat exchange circulation device 30 from the first aspect. The heating equipment provided in this embodiment has high reliability and a long service life.
[0095] For example, the heating device also includes a furnace body 10, a manifold 1 installed in the furnace body 10, and a suction pipe 2 and a blowing pipe 3 both disposed within the furnace body 10. The furnace body 10 also contains a product for conveying product 100.
[0096] In some optional embodiments, the heating device further includes a porous media heating assembly 20. The porous media heating assembly 20 is installed in the furnace body 10 and is used to release flue gas into the furnace body 10. Porous media combustion is a combustion method that occurs in a porous medium. Porous media combustion possesses three heat transfer modes: convection, conduction, and radiation. The combustion zone exhibits uniform temperature and a stable temperature gradient. It also demonstrates stable combustion and high volumetric heat intensity. Compared to free combustion, porous media combustion offers advantages such as high combustion rate, good combustion stability, wide load adjustment range, high volumetric heat intensity, small burner size, good gas adaptability, low pollutant emissions in flue gas, wider combustion limits, and the ability to burn gases with very low calorific value.
[0097] In this embodiment, both the porous medium heating component 20 and the heat equalization circulation device 30 are provided. The suction pipe 2 and the blowing pipe 3 of the heat equalization circulation device 30 are provided on both sides of the porous medium heating component 20, so that the suction pipe 2 can better draw the high-temperature flue gas released by the porous medium heating component 20.
[0098] Alternatively, multiple porous medium heating components 20 and heat equalization circulation devices 30 are provided in a one-to-one correspondence. The suction pipe 2 and blowing pipe 3 of the heat equalization circulation device 30 are set on both sides of the corresponding porous medium heating component 20, so that the suction pipe 2 can better draw the high-temperature flue gas released by the porous medium heating component 20.
[0099] For example, each porous medium heating assembly 20 includes two porous medium heaters 201, one of which is disposed at the top of the furnace body 10 and the other is disposed at the bottom of the furnace body 10.
[0100] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A heat equalization circulation device, applied to heating equipment, characterized in that, include: The manifold (1) is installed in the furnace body (10) of the heating equipment; A suction pipe (2) is connected to the manifold (1), and the suction pipe (2) is provided with a plurality of suction holes (21). The suction pipe (2) is located inside the furnace body (10). The blowing pipe (3) is connected to the confluence cavity (1), and the blowing pipe (3) is provided with multiple outlet holes (32). The blowing pipe (3) is located inside the furnace body (10) and is spaced apart from the suction pipe (2). The power assembly (4) is configured to draw the flue gas from the suction pipe (2) into the manifold (1) and to pressurize the flue gas in the manifold (1) into the blow pipe (3); the amount of fluid drawn into the suction pipe (2) per unit time through the suction hole (21) is greater than or equal to the amount of fluid blown out per unit time through the outlet hole (32).
2. The heat equalization circulation device according to claim 1, characterized in that, The sum of the flow areas of the plurality of suction holes (21) is greater than the sum of the flow areas of the plurality of outflow holes (32).
3. The heat equalization circulation device according to claim 1, characterized in that, The blowing pipe (3) has a first inclined sidewall (31), which is located on the side of the blowing pipe (3) near the porous medium heating assembly (20) and facing the product (100) inside the furnace body (10). A plurality of the outlet holes (32) are located on the first inclined sidewall (31). The suction pipe (2) has a second inclined sidewall (22), which is located on the side of the suction pipe (2) near the porous medium heating assembly (20) and facing the product (100) inside the furnace body (10). A plurality of suction holes (21) are provided on the second inclined sidewall (22). The area of the second inclined sidewall (22) is greater than the area of the first inclined sidewall (31).
4. The heat equalization circulation device according to claim 3, characterized in that, The angle between the plane containing the first inclined sidewall (31) and the horizontal plane is 40°-50°; the angle between the plane containing the second inclined sidewall (22) and the horizontal plane is 40°-50°.
5. The heat equalization circulation device according to claim 3, characterized in that, The blowing pipe (3) has a first end (33) in the extending direction and a second end (34) disposed opposite to the first end (33), the first end (33) being closer to the confluence cavity (1) relative to the second end (34); Along the direction from the second end (34) to the first end (33), the flow area of the blowing pipe (3) gradually increases; or, along the direction from the second end (34) to the first end (33), the flow area of the blowing pipe (3) is the same, and the flow area of the outlet hole (32) gradually decreases.
6. The heat equalization circulation device according to claim 3, characterized in that, The suction tube (2) has a third end (23) in the extending direction and a fourth end (24) disposed opposite to the third end (23), the third end (23) being closer to the confluence cavity (1) relative to the fourth end (24); Along the direction from the fourth end (24) to the third end (23), the flow area of the suction tube (2) gradually increases; or, along the direction from the fourth end (24) to the third end (23), the flow area of the suction tube (2) is the same, and the flow area of the suction hole (21) gradually decreases.
7. The heat equalization circulation device according to claim 1, characterized in that, Two suction pipes (2) and two blowing pipes (3) are provided in a one-to-one correspondence. The two suction pipes (2) are spaced apart in the first direction (Z), and the two blowing pipes (3) are spaced apart in the first direction (Z). The corresponding suction pipes (2) and blowing pipes (3) are spaced apart in the second direction (Y). The first direction (Z) is the height direction of the furnace body (10), and the second direction (Y) is perpendicular to the first direction (Z).
8. The heat equalization circulation device according to claim 1, characterized in that, The heat exchange circulation device also includes a drain pipe (7) and a control valve (8) disposed on the drain pipe (7). One end of the drain pipe (7) is connected to the manifold (1), and the other end of the drain pipe (7) extends to the outside of the furnace body (10). The power unit (4) is configured to draw air from outside the furnace body (10) to the manifold (1) through the drain pipe (7). The control valve (8) is configured to control the flow area of the drain pipe (7).
9. A heating device, characterized in that, The heating device includes the heat equalization circulation device as described in any one of claims 1-8, and the heating device further includes a furnace body (10), the manifold (1) is installed in the furnace body (10), and the suction pipe (2) and the blowing pipe (3) are both located inside the furnace body (10).
10. The heating device according to claim 9, characterized in that, The heating device further includes a porous medium heating component (20), which is installed in the furnace body (10) and is used to release flue gas into the furnace body (10); Each of the porous medium heating component (20) and the heat equalization circulation device is provided, and the suction pipe (2) and the blowing pipe (3) of the heat equalization circulation device are provided on both sides of the porous medium heating component (20); or, multiple porous medium heating components (20) and the heat equalization circulation device are provided in a corresponding manner, and the suction pipe (2) and the blowing pipe (3) of the heat equalization circulation device are provided on both sides of the corresponding porous medium heating component (20).