Flue gas emission system and heating equipment
By using branch exhaust pipe components and power components in the drying oven, the problem of temperature instability caused by fixed-frequency fan exhaust was solved, thus achieving stable temperature inside the oven and improved heating effect.
Patent Information
- Application Number
- CN202423052457.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing drying ovens, the fixed-frequency exhaust volume of the fan causes changes in the amount of flue gas when the burner power changes, resulting in unstable temperature inside the oven and affecting the drying effect of the material.
By employing branch exhaust pipe assemblies and power assemblies, and through the interval setting of the first exhaust branch pipe and the second exhaust branch pipe, outside air is introduced to supplement the flue gas volume changes, maintain a constant total exhaust volume, prevent cold air from entering the furnace body, and reduce temperature disturbances.
This achieves a stable temperature distribution within the furnace, improves heating uniformity and efficiency, reduces temperature fluctuations, and enhances the quality of material drying.
Smart Images
Figure CN223537665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smoke exhaust technology, and in particular to a smoke exhaust system and heating equipment. Background Technology
[0002] Drying ovens are typically used for drying materials. Current drying ovens use burners inside to burn fuel. The combustion of fuel releases heat, which raises the temperature inside the drying oven, thereby drying the materials.
[0003] In existing technologies, high-temperature flue gas is generated after fuel combustion. This flue gas needs to be discharged after heat exchange with the material. The drying oven body is equipped with a flue gas outlet, and one end of the flue gas pipe is connected to the outlet, while the other end extends to the chimney. That is, the flue gas pipe is directly connected to the outlet. A fan is installed in the flue gas pipe. When the fan is turned on, it generates suction in the flue gas pipe, thereby drawing the flue gas from the oven body to achieve active flue gas discharge. However, due to considerations such as cost, power control, and wiring complexity, the fan is usually a fixed-frequency fan. That is, the fan's air volume is constant, but when the burner power changes, the amount of flue gas produced also changes. When the amount of flue gas produced by the burner decreases, and the fan's exhaust volume remains constant, in addition to the flue gas, the fan will draw in cold air from outside into the oven body through gaps in the oven body. This has a significant impact on the temperature stability inside the oven body, disrupting the temperature distribution and leading to uncontrollable temperature changes, thus affecting the drying effect. Utility Model Content
[0004] The first objective of this invention is to provide a flue gas emission system that can reduce the disturbance to the temperature inside the furnace and facilitate the control of the temperature inside the furnace.
[0005] The second objective of this invention is to provide a heating device that has high heating uniformity and good heating effect.
[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:
[0007] A flue gas emission system is used for exhausting smoke from heating equipment, the flue gas emission system comprising:
[0008] Main exhaust pipe;
[0009] The branch flue assembly includes a first flue branch pipe and a second flue branch pipe. The inlet of the first flue branch pipe is connected to the furnace body. The outlet of the first flue branch pipe and the inlet of the second flue branch pipe are spaced apart. The outlet of the second flue branch pipe is connected to the main flue pipe.
[0010] A power assembly, the inlet of which is connected to the main exhaust pipe, and the power assembly is used to draw in the flue gas inside the main exhaust pipe.
[0011] Optionally, the inlet area of the first exhaust branch pipe is smaller than the outlet area of the second exhaust branch pipe.
[0012] Optionally, the interval H between the smoke outlet of the first smoke exhaust branch pipe and the smoke inlet of the second smoke exhaust branch pipe is in the range of 10mm to 100mm.
[0013] Optionally, the diameter of the smoke outlet of the first smoke exhaust branch pipe is D1, and the diameter of the smoke inlet of the second smoke exhaust branch pipe is D2, with the difference between D1 and D2 ranging from 100mm to 200mm.
[0014] Optionally, the second exhaust branch pipe includes a connecting pipe section and an ejector pipe section. One end of the connecting pipe section is connected to the furnace body, and the ejector pipe section is connected to the other end of the connecting pipe section. The area of the ejector pipe section away from the end of the connecting pipe section is larger than the area of the exhaust port of the first exhaust branch pipe. The ejector pipe section is a frustum-shaped pipe, and the flow area of the ejector pipe section connected to the end of the connecting pipe section is smaller than the area of the ejector pipe section away from the end of the connecting pipe section.
[0015] Optionally, the connecting pipe section is bent; and / or, the axis of the ejector pipe section coincides with the axis of the first exhaust branch pipe.
[0016] Optionally, the flue gas emission system includes multiple sets of branch flue pipe assemblies, which are spaced apart along the extension direction of the main flue pipe. Each set of branch flue pipe assemblies includes two branch flue pipe assemblies, which are symmetrically arranged on both sides of the main flue pipe.
[0017] Optionally, the flue gas emission system further includes a regulating valve, which is disposed on the first exhaust branch pipe and used to regulate the flow area of the first exhaust branch pipe.
[0018] A heating device is provided, including a furnace body and a flue gas emission system as described above, wherein the flue gas inlet of the branch flue pipe assembly is connected to the furnace body.
[0019] Optionally, the flue gas emission system is located at the top of the furnace body, and the flue gas emission system includes multiple sets of branch flue pipe assemblies, with the two branch flue pipe assemblies of each set of branch flue pipe assemblies connected to the furnace body near the edge of the furnace body in the width direction.
[0020] The beneficial effects of this utility model are:
[0021] The flue gas emission system and heating equipment provided by this utility model have a first exhaust branch pipe connected to the furnace body of the heating equipment, and a second exhaust branch pipe connected to the main exhaust pipe. When the amount of flue gas in the furnace body decreases, the power component can introduce outside air through the gap between the first and second exhaust branch pipes. The introduced air fills the reduced amount of flue gas, thereby reducing or avoiding the intake of cold air into the furnace body through the gaps in the furnace body. This reduces the disturbance of the flue gas to the temperature distribution in the furnace body, avoids the instability of the flue gas in the furnace body, and makes the temperature in various positions in the furnace body more uniform. This facilitates the control of the temperature distribution in the furnace body and improves the heating effect of the product. Attached Figure Description
[0022] 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.
[0023] Figure 1 This is a first structural schematic diagram of the flue gas emission system provided in this embodiment of the utility model;
[0024] Figure 2 This is a schematic diagram of the second structure of the flue gas emission system provided in this embodiment of the present invention;
[0025] Figure 3 This is a side view of the flue gas emission system provided in an embodiment of the present invention;
[0026] Figure 4 This is a utility model Figure 3 The enlarged view of point A shown;
[0027] Figure 5 This is a first structural schematic diagram of the heating device provided in this embodiment of the utility model;
[0028] Figure 6 This is a second structural schematic diagram of the heating device provided in this embodiment of the utility model;
[0029] Figure 7 This is a third structural schematic diagram of the heating device provided in this embodiment of the utility model;
[0030] Figure 8 This is a utility model Figure 6 The BB section view shown;
[0031] Figure 9 This is a utility model Figure 6 The shown is a CC section view;
[0032] Figure 10 This is a utility model Figure 6 The DD sectional view shown.
[0033] In the picture:
[0034] 10. Flue gas emission system; 1. Main exhaust pipe; 11. First main pipe section; 12. Second main pipe section; 13. Third main pipe section; 2. Branch exhaust pipe assembly; 21. First exhaust branch pipe; 211. First pipe section; 212. Second pipe section; 22. Second exhaust branch pipe; 221. Connecting pipe section; 222. Ejector pipe section; 3. Power assembly; 4. Regulating valve; 5. Support components;
[0035] 20. Furnace body; 30. Chimney; 40. Burner assembly;
[0036] 100, Product; X, First Direction; Y, Second Direction; Z, Third Direction. Detailed Implementation
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0044] Firstly, this embodiment provides a flue gas emission system for exhausting flue gas from a heating device, which includes a furnace body. The flue gas emission system provided in this embodiment can reduce temperature disturbances within the furnace body, facilitate control of the flue gas temperature within the furnace body, and ensure effective heating of the product.
[0045] like Figures 1 to 6 As shown, the flue gas emission system 10 includes a main exhaust pipe 1, a branch exhaust pipe assembly 2, and a power assembly 3. The inlet of the branch exhaust pipe assembly 2 is connected to the furnace body 20, allowing the flue gas inside the furnace body 20 to flow to the branch exhaust pipe assembly 2. The outlet of the branch exhaust pipe assembly 2 is connected to the main exhaust pipe 1, allowing the flue gas inside the branch exhaust pipe assembly 2 to flow to the main exhaust pipe 1 and then be discharged through the main exhaust pipe 1.
[0046] For example, the inlet of the power component 3 is connected to the main exhaust pipe 1, and the power component 3 is used to draw the flue gas in the main exhaust pipe 1, and then indirectly draw the flue gas in the furnace body 20 through the main exhaust pipe 1 and the branch exhaust pipe assembly 2, and to transport the flue gas to the chimney 30 to realize the exhaust of the furnace body 20.
[0047] In some optional embodiments, the connection point between the branch flue assembly 2 and the main flue 1 is spaced apart from the connection point between the power assembly 3 and the main flue 1. That is, the axis of the flue outlet of the branch flue assembly 2 is different from the axis of the connection point between the main flue 1 and the power assembly 3. This ensures that the flue gas in the branch flue assembly 2 is not directly drawn to the power assembly 3, but instead first enters the main flue 1, flows through the main flue 1 to adjust its direction, and then flows to the power assembly 3. The flue gas in the furnace body is indirectly drawn through the main flue 1 and the branch flue assembly, so that the flow field of the flue gas in the furnace body does not change drastically, but changes slowly, thereby reducing the disturbance of the flue gas to the temperature distribution in the furnace body. For example, the power assembly 3 can be a fan, a blower, or other power equipment; this embodiment does not limit this.
[0048] In this embodiment, as Figure 1 As shown, the branch flue assembly 2 includes a first exhaust branch pipe 21 and a second exhaust branch pipe 22. The inlet of the first exhaust branch pipe 21 is connected to the furnace body 20, and the outlet of the first exhaust branch pipe 21 and the inlet of the second exhaust branch pipe 22 are spaced apart. That is, this embodiment uses an ejector method to exhaust smoke from the furnace body 20. While ensuring smooth extraction of flue gas from the furnace body 20, it can further reduce the disturbance to the temperature inside the furnace body 20, resulting in a better smoke extraction effect.
[0049] Specifically, in this embodiment, the power component 3 can be a fixed-frequency fan, meaning that the exhaust volume of the power component 3 is constant. The main source of flue gas discharged from the flue gas emission system is combustion by the burner. When the burner power is reduced, the amount of flue gas produced decreases. When the fan exhaust volume is constant, in addition to flue gas, external cold air will be drawn into the furnace body 20 through the gaps in the furnace body 20, which will have a significant impact on the temperature stability inside the furnace body 20.
[0050] In this embodiment, the exhaust port of the first exhaust branch pipe 21 and the inlet of the second exhaust branch pipe 22 are spaced apart. That is, the exhaust port of the first exhaust branch pipe 21 and the second exhaust branch pipe 22 are not directly connected. When the burner power in the furnace body 20 decreases and the amount of flue gas produced decreases, outside air can be introduced through the gap between the first exhaust branch pipe 21 and the second exhaust branch pipe 22, without having to draw cold air into the furnace body 20 through the gaps in the furnace body 20. When the exhaust volume of the power component 3 remains unchanged, the total exhaust volume of the flue gas emission system = the amount of flue gas produced in the furnace body 20 + the amount of air introduced through the gap between the first exhaust branch pipe 21 and the second exhaust branch pipe 22. Both change with the amount of flue gas, but the total exhaust volume remains unchanged.
[0051] Specifically, the exhaust volume Q1 of the power component 3 is a constant, the amount of outside cold air mixed in Q2, and the amount of flue gas extracted from the furnace Q3 satisfy the following relationship:
[0052] Q1 = Q2 + Q3
[0053] The power of the heating equipment primarily depends on the product's production capacity. Once the production capacity is determined, the maximum power of the heating furnace is also determined. At maximum power, the amount of flue gas Q3 generated by combustion of the gas inside the furnace is determined. Based on this, the exhaust volume Q1 of the power component 3 is essentially determined. Compared to the maximum power of the heating equipment, when the burner power is reduced, the amount of flue gas Q3 inside the furnace decreases accordingly, and the amount of external cold air mixed in Q1 increases accordingly. Therefore, under the condition of constant frequency operation of the power component 3, regardless of changes in the heating furnace power (i.e., the power of the burner component), the flue gas pressure inside the furnace is stabilized through the corresponding dynamic changes in the amount of external cold air mixed in Q1.
[0054] The flue gas emission system 10 provided in this embodiment has a first exhaust branch pipe 21 connected to the furnace body 20 of the heating equipment, and a second exhaust branch pipe 22 connected to the main exhaust pipe 1. When the amount of flue gas in the furnace body 20 decreases, the power component 3 can introduce outside air through the gap between the first exhaust branch pipe 21 and the second exhaust branch pipe 22. The introduced air fills the reduced amount of flue gas without having to draw in cold air into the furnace body 20 through the gaps in the furnace body 20. This reduces the disturbance of the flue gas to the temperature distribution in the furnace body 20, avoids flue gas instability in the furnace body 20, and makes the temperature in various positions in the furnace body 20 more uniform. This facilitates the control of the temperature distribution in the furnace body 20 and improves the heating effect on the product 100.
[0055] For example, the outlet area of the first exhaust branch pipe 21 is smaller than the inlet area of the second exhaust branch pipe 22. This ensures the injection effect while allowing the inlet of the second exhaust branch pipe 22 to draw as much flue gas as possible from the outlet of the first exhaust branch pipe 21 into the second exhaust branch pipe 22, preventing gas leakage and ensuring the environment of the space where the furnace body 20 is located. The outlet of the second exhaust branch pipe 22 is connected to the main exhaust pipe 1 to facilitate the flow of flue gas from the second exhaust branch pipe 22 to the main exhaust pipe 1.
[0056] Optionally, such as Figure 4As shown, the interval H between the smoke outlet of the first exhaust branch pipe 21 and the smoke inlet of the second exhaust branch pipe 22 ranges from 10mm to 100mm. If the interval H is too large, the smoke flowing from the smoke outlet of the first exhaust branch pipe 21 will leak out, affecting the smoke extraction effect and increasing the load on the power assembly 3. If the interval H is too small, it will be close to a direct connection between the first and second exhaust branch pipes 21 and 22, failing to achieve the desired ejection effect. For example, the interval H between the smoke outlet of the first exhaust branch pipe 21 and the smoke inlet of the second exhaust branch pipe 22 can be 10mm, 20mm, 50mm, 70mm, 80mm, 90mm, or 100mm.
[0057] For example, both the first exhaust branch pipe 21 and the second exhaust branch pipe 22 are circular pipes to provide a larger flow area. The diameter of the exhaust outlet of the first exhaust branch pipe 21 is D1, and the diameter of the exhaust inlet of the second exhaust branch pipe 22 is D2, where D1 < D2, and the difference between D1 and D2 ranges from 100mm to 200mm. A significant difference between the diameters of the exhaust outlet of the first exhaust branch pipe 21 and the exhaust inlet of the second exhaust branch pipe 22 will cause the second exhaust branch pipe 22 to draw in a large amount of air through its inlet, thus increasing the load requirements of the power assembly 3. Prolonged high-load operation of the power assembly 3 will shorten its service life and increase unnecessary energy consumption, thereby increasing the cost of the flue gas emission system 10. Conversely, a smaller difference between the diameters of the exhaust outlet of the first exhaust branch pipe 21 and the exhaust inlet of the second exhaust branch pipe 22 may lead to flue gas leakage. For example, the difference between D1 and D2 is 100mm, 120mm, 150mm, 180mm, and 200mm.
[0058] It is understandable that the first exhaust branch pipe 21 and the second exhaust branch pipe 22 can also be polygonal pipes. In this case, the diameter of the smoke outlet of the first exhaust branch pipe 21 specifically refers to the equivalent diameter of the smoke outlet of the first exhaust branch pipe 21, and the diameter of the smoke inlet of the second exhaust branch pipe 22 specifically refers to the equivalent diameter of the smoke inlet of the second exhaust branch pipe 22.
[0059] In some alternative embodiments, please continue to refer to Figure 4 The second exhaust branch pipe 22 includes a connecting pipe section 221 and an ejector pipe section 222. One end of the connecting pipe section 221 is connected to and communicates with the main exhaust pipe 1, and the ejector pipe section 222 is connected to the other end of the connecting pipe section 221. That is, the inner diameter of the ejector pipe section 222 near the connecting pipe section 221 is equal to the inner diameter of the connecting pipe section 221. The area of the port of the ejector pipe section 222 away from the connecting pipe section 221 is larger than the area of the exhaust outlet of the first exhaust branch pipe 21.
[0060] In this embodiment, the connecting pipe section 221 has a constant diameter structure, while the ejector pipe section 222 has a variable diameter structure. For example, the ejector pipe section 222 is a frustum-shaped pipe, and the flow area of the ejector pipe section 222 connected to one end of the connecting pipe section 221 is smaller than the area of the ejector pipe section 222 away from the end of the connecting pipe section 221. By setting the ejector pipe section 222 to a frustum shape, the inner diameter of the ejector pipe section 222 gradually changes along its axial direction, and the flow area near the connecting pipe section 221 is smaller, while the flow area near the smoke outlet of the first exhaust branch pipe 21 is larger. After the smoke flows out from the smoke outlet of the first exhaust branch pipe 21 and enters the ejector pipe section 222, the reduced flow area increases the flow velocity of the smoke within the ejector pipe section 222, thus drawing all the smoke around the ejector pipe section 222 into it, improving the smoke extraction effect and efficiency.
[0061] Optionally, in this embodiment, the axis of the ejector tube section 222 coincides with the axis of the first exhaust branch pipe 21, so that the ejector tube section 222 can be directly opposite the first exhaust branch pipe 21. The flue gas discharged from the first exhaust branch pipe 21 enters the ejector tube section 222 under the action of inertial force, further improving the exhaust effect of the flue gas emission system 10.
[0062] In some alternative embodiments, such as Figure 3 As shown, the connecting pipe section 221 is bent, meaning that the flue gas changes direction when flowing through it. This effectively increases the internal resistance of the flue gas flow, ensuring smooth smoke extraction without excessive suction at the inlet of the connecting pipe section 221, thus further reducing temperature disturbance within the furnace body 20. In this embodiment, the bending angle of the connecting pipe section 221 is greater than 90° to avoid excessive resistance that could compromise the smoke extraction effect.
[0063] Optionally, the flue gas emission system 10 includes multiple sets of branch flue pipe assemblies 2, which are spaced apart along the extension direction of the main flue pipe 1 to exhaust flue gas from different areas within the furnace body 20. This ensures that the suction force at the inlet of each branch flue pipe assembly 2 is not too large to draw in the flue gas located near the inlet of the branch flue pipe assembly within the furnace body 20, thus preventing excessive disturbance to the temperature within the furnace body 20.
[0064] For example, such as Figure 2 As shown, each set of branch exhaust pipe assembly 2 includes two branch exhaust pipe assemblies 2. The two branch exhaust pipe assemblies 2 of each set are symmetrically arranged on both sides of the main exhaust pipe 1 to further improve the exhaust effect and uniformity, and to minimize the disturbance to the temperature inside the furnace body 20.
[0065] In some alternative embodiments, such as Figure 3As shown, the flue gas emission system 10 also includes a regulating valve 4, which is installed in the first exhaust branch pipe 21 and used to adjust the flow area of the first exhaust branch pipe 21. By setting the regulating valve 4, when flue gas emission is required, the opening of the regulating valve 4 is adjusted to be non-zero, allowing the flue gas in the furnace body 20 to flow out through the first exhaust branch pipe 21. When flue gas emission is not required, the opening of the regulating valve 4 is adjusted to zero, preventing the flue gas from flowing out of the first exhaust branch pipe 21, and also preventing external air from flowing into the furnace body 20 through the first exhaust branch pipe 21, thus making the extraction power of the flue gas emission system 10 adjustable.
[0066] For example, such as Figure 3 As shown, the first exhaust branch pipe 21 includes a first pipe section 211 and a second pipe section 212 that are connected together. The first pipe section 211 is connected to and communicates with the furnace body 20, and the second pipe section 212 is arranged towards the ejector pipe section 222. The regulating valve 4 is arranged between the first pipe section 211 and the second pipe section 212.
[0067] In some alternative embodiments, such as Figure 6 As shown, the main exhaust pipe 1 may include a first main pipe section 11, a second main pipe section 12, and a third main pipe section 13. The first main pipe section 11 extends along the length of the furnace body 20 and is positioned above the top of the furnace body 20. The second main pipe section 12 is perpendicular to the first main pipe section 11 and extends along the width of the furnace body 20. Figure 6 In the process, the conveying direction of product 100 is from right to left, that is, the material conveying outlet of the furnace body is located at... Figure 6 The left side of the state shown. The second main pipe section 12 is located at the end of the first main pipe section 11 near the material transport outlet of the furnace body. The third main pipe section 13 is arranged perpendicular to the second main pipe section 12 and extends along the length of the furnace body 20. The power assembly 3 is located at the end of the third main pipe section 13 away from the second main pipe section 12.
[0068] In this embodiment, the main exhaust pipe 1 is fixed to the furnace body 20 by a support member 5. For example, there are two support members 5, one end of which is connected to both ends of the main exhaust pipe 1, and the other end of which extends toward both ends of the furnace body 20 in the length direction and is connected to the furnace body 20.
[0069] Secondly, this embodiment provides a heating device, such as... Figures 5 to 10 As shown, the heating equipment includes a furnace body 20 and a flue gas emission system 10 as described in the first aspect. The inlet of the branch flue pipe assembly 2 is connected to the furnace body 20. The heating equipment provided in this embodiment has high heating uniformity and good heating effect.
[0070] In this embodiment, the length direction of the furnace body 20 is referred to as the first direction X, the width direction of the furnace body 20 is referred to as the second direction Y, and the height direction of the furnace body 20 is referred to as the third direction Z. The flue gas emission system 10 is located at the top of the furnace body 20, that is, the flue gas outlet of the furnace body 20 is located at the top. The main flue pipe 1 extends along the length direction of the furnace body 20. For example, the main flue pipe 1 extends from one end of the furnace body 20 to the other end in the first direction X.
[0071] For example, such as Figure 7 and Figure 8 As shown, the flue gas emission system 10 is located at the top of the furnace body 20, and the flue gas emission system 10 includes multiple sets of branch flue pipe assemblies 2. The two branch flue pipe assemblies 2 of each set of branch flue pipe assemblies 2 are located near the edge of the furnace body 20 in the width direction at the communication positions between them and the furnace body 20 (i.e., the flue gas outlets of the furnace body 20). Since the product 100 operates continuously inside the furnace body 20, it is equivalent to the existence of a flue gas barrier with a width equal to the width of the product 100 in the length direction of the furnace body 20, causing the flue gas to accumulate on both sides in the width direction of the furnace body 20. In this embodiment, several flue gas outlets are provided on the edge of the top of the furnace body 20 in the width direction for flue gas exhaust, and each flue gas outlet is connected to a branch flue pipe assembly 2 to improve the uniformity of flue gas exhaust.
[0072] In some alternative embodiments, such as Figure 8 As shown, the furnace body 20 is equipped with burner assemblies 40, which are spaced apart along the length of the furnace body 20. There are exhaust ports between two adjacent burner assemblies 40 to ensure exhaust effect.
[0073] 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 flue gas emission system for exhausting flue gas from heating equipment, characterized in that, The flue gas emission system includes: Main exhaust pipe (1); The branch flue assembly (2) includes a first flue branch pipe (21) and a second flue branch pipe (22). The inlet of the first flue branch pipe (21) is connected to the furnace body (20). The outlet of the first flue branch pipe (21) and the inlet of the second flue branch pipe (22) are spaced apart. The outlet of the second flue branch pipe (22) is connected to the main flue pipe (1). The power assembly (3) is connected to the main exhaust pipe (1) at its inlet and is used to draw in the flue gas in the main exhaust pipe (1).
2. The flue gas emission system according to claim 1, characterized in that, The inlet area of the first exhaust branch pipe (21) is smaller than the outlet area of the second exhaust branch pipe (22).
3. The flue gas emission system according to claim 2, characterized in that, The interval H between the smoke outlet of the first smoke exhaust branch pipe (21) and the smoke inlet of the second smoke exhaust branch pipe (22) ranges from 10mm to 100mm.
4. The flue gas emission system according to claim 2, characterized in that, The diameter of the smoke outlet of the first smoke exhaust branch pipe (21) is D1, and the diameter of the smoke inlet of the second smoke exhaust branch pipe (22) is D2. The difference between D1 and D2 is 100mm to 200mm.
5. The flue gas emission system according to any one of claims 1-4, characterized in that, The second exhaust branch pipe (22) includes a connecting pipe section (221) and an ejector pipe section (222). One end of the connecting pipe section (221) is connected to the main exhaust pipe (1), and the ejector pipe section (222) is connected to the other end of the connecting pipe section (221). The area of the ejector pipe section (222) away from the end of the connecting pipe section (221) is larger than the area of the exhaust port of the first exhaust branch pipe (21). The ejector pipe section (222) is a frustum-shaped pipe, and the flow area of the ejector pipe section (222) connected to the end of the connecting pipe section (221) is smaller than the area of the ejector pipe section (222) away from the end of the connecting pipe section (221).
6. The flue gas emission system according to claim 5, characterized in that, The connecting pipe section (221) is bent; and / or, the axis of the ejector pipe section (222) coincides with the axis of the first exhaust branch pipe (21).
7. The flue gas emission system according to any one of claims 1-4, characterized in that, The flue gas emission system includes multiple sets of branch flue pipe assemblies (2), which are spaced apart along the extension direction of the main flue pipe (1). Each set of branch flue pipe assemblies (2) includes two branch flue pipe assemblies (2), which are symmetrically arranged on both sides of the main flue pipe (1).
8. The flue gas emission system according to any one of claims 1-4, characterized in that, The flue gas emission system also includes a regulating valve (4), which is located on the first exhaust branch pipe (21) and is used to regulate the flow area of the first exhaust branch pipe (21).
9. A heating device, characterized in that, Includes a furnace body (20) and a flue gas emission system as described in any one of claims 1-8, wherein the inlet of the branch flue assembly (2) is connected to the furnace body (20).
10. The heating device according to claim 9, characterized in that, The flue gas emission system is located on the top of the furnace body (20), and the flue gas emission system includes multiple sets of branch flue pipe assemblies (2). The two branch flue pipe assemblies (2) of each set of branch flue pipe assemblies (2) are located near the edge of the furnace body (20) in the width direction.