Duct structure and exhaust system

Abstract

This application relates to the technical field of ventilation systems, and specifically proposes a duct structure and ventilation system. The duct structure includes a circular main duct and an exhaust connector. The exhaust connector connects two adjacent sections of the circular main duct and is coaxially arranged with the circular main duct. The exhaust connector has a rectangular air outlet. Compared to rectangular ducts, the circular main duct in this application uses less material, reducing costs, and has higher strength. Furthermore, rectangular air outlets can be pre-installed on the exhaust connector for easy connection to components such as air valves, facilitating operation. In addition, the coaxial arrangement of the circular main duct and exhaust connector in this application, compared to connecting rectangular duct branches to the main circular duct and then opening air outlets on the rectangular duct, simplifies the ventilation path, reduces wind resistance, and improves ventilation efficiency.

Description

Technical Field

[0001] This application relates to the technical field of ventilation systems, and specifically proposes a duct structure and a ventilation system. Background Technology

[0002] An exhaust ventilation system is a type of ventilation system used to exhaust indoor air to the outside. It is widely used in residential buildings, commercial buildings, industrial plants, laboratories, and other places. Its main functions are to improve indoor air quality, control temperature and humidity, remove harmful gases or odors, and prevent the accumulation of pollutants.

[0003] In practical applications, air ducts are the main components of the exhaust system. They have air vents on them, and air valves and other components can be installed at the air vents. Considering the ease of installation of components at the air vents, the air vents are generally located on planar structural components.

[0004] Therefore, most air ducts are rectangular, providing a planar area for opening air vents. However, due to their shape, rectangular ducts require more material and are weaker than round ducts for the same cross-sectional area. Furthermore, some exhaust systems use round ducts as the main path, connecting them to rectangular ducts as branch paths, and then opening air vents on the rectangular ducts. This method results in a complex exhaust path and higher air resistance. Utility Model Content

[0005] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:

[0006] In the first aspect, this application proposes a duct structure, which includes a circular main duct and an exhaust connector. The exhaust connector is connected between two adjacent sections of the circular main duct and is coaxially arranged with the circular main duct. The exhaust connector is provided with a rectangular air outlet.

[0007] In some embodiments, the exhaust connector includes a circular pipe section and a rectangular connector; the circular pipe section is coaxially arranged with the circular main duct, and both ends of the circular pipe section are respectively connected to a section of the circular main duct; the circular pipe section has an arc-shaped opening in the radial direction, one side of the rectangular connector is connected to the arc-shaped opening, and the other side forms a rectangular air outlet.

[0008] In some embodiments, the exhaust connection also includes flanges, with flanges connected to both ends of the circular pipe section along the axial direction, and the circular pipe section is connected to the circular main air duct through the flanges.

[0009] In some embodiments, the flange is an angle iron flange, a slip-on flange, a socket flange, or a threaded flange.

[0010] In some embodiments, the rectangular interface is located below the circular pipe section.

[0011] In some embodiments, the surface of the circular main air duct and / or exhaust connection is provided with an anti-corrosion paint layer.

[0012] In some embodiments, the thickness of the exhaust connector is greater than the thickness of the circular main duct.

[0013] Secondly, this application proposes an exhaust system that includes the duct structure of the first aspect.

[0014] In some embodiments, the exhaust system further includes a damper connected to a rectangular air outlet.

[0015] In some embodiments, the exhaust system further includes guide vanes disposed inside the circular main duct.

[0016] The technical solution proposed in this application has at least the following technical effects:

[0017] In this application, the duct structure includes a circular main duct and an exhaust connector. The exhaust connector connects two adjacent sections of the circular main duct and is coaxially arranged with the circular main duct. The exhaust connector has a rectangular air outlet. Compared to rectangular ducts, the circular main duct in this application uses less material, reducing costs, and has higher strength. Furthermore, rectangular air outlets can be pre-installed on the exhaust connector for easy connection to components such as air valves, facilitating operation. In addition, the coaxial arrangement of the circular main duct and exhaust connector in this application, compared to connecting rectangular duct branches to the main circular duct and then creating air outlets on the rectangular duct, results in a simpler exhaust path, reduced air resistance, and better exhaust performance. Attached Figure Description

[0018] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.

[0019] Specifically, the annotations for the accompanying drawings are as follows:

[0020] Figure 1 This is a schematic diagram of the duct structure described in some embodiments of this application;

[0021] Figure 2 This is a cross-sectional schematic diagram of the exhaust connection member described in some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the rectangular interface component described in some embodiments of this application.

[0023] Specifically, the annotations for the figure marks in the instruction manual are as follows:

[0024] 10. Circular main air duct; 20. Exhaust connection fitting; 201. Circular pipe section; 202. Rectangular interface fitting; 203. Flange. Detailed Implementation

[0025] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It is to be understood that the content mentioned below is only a partial embodiment of this application, while the complete list of all embodiments is provided. Therefore, other embodiments obtained based on the following embodiments without any inventive effort all fall within the protection scope of this application.

[0026] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.

[0027] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.

[0028] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0029] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.

[0030] The embodiments of this application will now be described with reference to the accompanying drawings.

[0031] Reference Figure 1 and Figure 2The embodiments of this application propose a duct structure, which includes a circular main duct 10 and an exhaust connector 20. The exhaust connector 20 is connected between two adjacent sections of the circular main duct 10 and is coaxially arranged with the circular main duct 10. A rectangular air outlet is provided on the exhaust connector 20.

[0032] In this embodiment, the duct structure includes a circular main duct 10 and an exhaust connector 20. The exhaust connector 20 connects two adjacent sections of the circular main duct 10 and is coaxially arranged with the circular main duct 10. A rectangular air outlet is provided on the exhaust connector 20. Compared to rectangular ducts, the circular main duct 10 in this application uses less material, reducing costs, and has higher strength. Furthermore, a rectangular air outlet can be pre-set on the exhaust connector 20 for easy connection to components such as air valves, facilitating operation. In addition, the coaxial arrangement of the circular main duct 10 and the exhaust connector 20 in this application, compared to connecting a rectangular branch duct to the main circular duct and then opening an air outlet on the rectangular duct, results in a simpler exhaust path, reduced wind resistance, and better exhaust performance.

[0033] In some embodiments, refer to Figures 1 to 3 The exhaust connector 20 includes a circular pipe section 201 and a rectangular connector 202. The circular pipe section 201 is coaxially arranged with the circular main air duct 10, and both ends of the circular pipe section 201 are connected to a section of the circular main air duct 10 in the axial direction. The circular pipe section 201 has an arc-shaped opening in the radial direction. One side of the rectangular connector 202 is connected to the arc-shaped opening, and the other side forms a rectangular air outlet.

[0034] In this embodiment, a specific implementation of the exhaust connector 20 is proposed, wherein one side of the rectangular interface 202 is sealed and connected to the arc-shaped opening of the circular pipe section 201, including but not limited to welding and riveting. It should be noted that, as... Figure 2 and Figure 3 As shown, the rectangular interface piece 202 can be made of thin sheet metal, with its upper end connected to the arc-shaped opening of the circular pipe section 201, and its lower end forming a rectangular air vent.

[0035] In some embodiments, refer to Figure 1 and Figure 2 The exhaust connection 20 also includes a flange 203. The circular pipe section 201 is connected to the flange 203 at both ends of the axial direction. The circular pipe section 201 is connected to the circular main air duct 10 through the flange 203.

[0036] In this embodiment, a specific implementation method for connecting the circular pipe segment 201 and the circular main air duct 10 is proposed. Understandably, the two are sealed and connected by flange 203.

[0037] In some embodiments, flange 203 is an angle iron flange, a slip-on flange, a socket flange, or a threaded flange.

[0038] It should be understood that flange 203 can also be other flange types, which will not be listed in detail here.

[0039] In some embodiments, refer to Figure 1 and Figure 2 The rectangular interface component 202 is located below the circular pipe section 201.

[0040] In this embodiment, the rectangular interface component 202 is located below the circular pipe section 201, that is, the rectangular air outlet faces downwards. This can prevent the backflow of discharged polluted gas and also prevent rainwater from entering the interior of the duct structure.

[0041] In some embodiments, the surface of the circular main air duct 10 and / or the exhaust connector 20 is provided with an anti-corrosion paint layer.

[0042] In this embodiment, the circular main duct 10 and / or exhaust connector 20 are provided with an anti-corrosion paint layer, thereby preventing the duct structure from rusting and extending its service life. It is understood that the circular main duct 10 and / or exhaust connector 20 can also be made of stainless steel for rust prevention, or its surface can be galvanized to address the problem of sheet metal easily rusting.

[0043] In some embodiments, the thickness of the exhaust connector 20 is greater than the thickness of the circular main duct 10.

[0044] In this embodiment, the exhaust connector 20 has a more complex structure than the circular main duct 10. The air resistance at the exhaust connector 20 is greater than that at the circular main duct 10, and its strength is less than that of the circular main duct 10. Therefore, the exhaust connector 20 is appropriately thickened to increase its structural strength. Understandably, the material thickness of the circular pipe section 201, the rectangular interface 202, and the flange 203 is greater than that of the circular main duct 10.

[0045] Secondly, embodiments of this application propose an exhaust system that includes the duct structure of the first aspect.

[0046] In this embodiment, the exhaust system of the second aspect includes all the technical effects of the duct structure of the first aspect.

[0047] In some embodiments not shown in the figures, the exhaust system also includes a damper connected to a rectangular air outlet.

[0048] In this embodiment, the air valve can be connected to the rectangular interface 202, specifically by welding or riveting, wherein the air valve can be used to control whether to exhaust air or the amount of exhaust air.

[0049] In some embodiments not shown in the figures, the exhaust system also includes guide vanes disposed inside the circular main duct 10.

[0050] In this embodiment, guide vanes are provided inside the circular main air duct 10 to guide the airflow and improve exhaust efficiency.

[0051] It should be noted that the exhaust system may also include other structures, such as an exhaust power unit, a grille at the air outlet, etc. Other structures will not be described in detail here.

[0052] In particular, the term "and / or" in this application should be understood as follows:

[0053] In the first case, the term “and / or” between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.

[0054] In the second case, the term "and / or" between the last two of three or more subjects means including at least any one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) first subject and second subject and no third subject; (5) first subject and third subject and no second subject; (6) second subject and third subject and no first subject; and (7) first subject, second subject and third subject;

[0055] Furthermore, the character " / " in this application indicates that the objects before and after it are in an "or" relationship.

[0056] Furthermore, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.

Claims

1. A duct structure, characterized in that, It includes a circular main air duct (10) and an exhaust connector (20). The exhaust connector (20) is connected between two adjacent sections of the circular main air duct (10). The exhaust connector (20) is coaxially arranged with the circular main air duct (10). The exhaust connector (20) is provided with a rectangular air outlet.

2. The duct structure according to claim 1, characterized in that, The exhaust connector (20) includes a circular pipe section (201) and a rectangular interface component (202); The circular pipe segment (201) is coaxially arranged with the circular main air duct (10), and the two ends of the circular pipe segment (201) in the axial direction are respectively connected to a section of the circular main air duct (10); The circular pipe section (201) is provided with an arc-shaped opening in the radial direction. One side of the rectangular interface piece (202) is connected to the arc-shaped opening, and the other side forms the rectangular air vent.

3. The duct structure according to claim 2, characterized in that, The exhaust connector (20) also includes a flange (203), and the circular pipe section (201) is connected to the flange (203) at both ends of its axial direction. The circular pipe section (201) is connected to the circular main air duct (10) through the flange (203).

4. The duct structure according to claim 3, wherein The flange (203) is an angle iron flange, a flat welding flange, a socket flange, or a threaded flange.

5. The duct structure according to claim 2, wherein The rectangular interface component (202) is located below the circular pipe section (201).

6. The duct structure according to claim 1, wherein The circular main air duct (10) and / or the exhaust connector (20) are provided with an anti-corrosion paint layer.

7. The duct structure according to any one of claims 1 to 6, characterized by The thickness of the exhaust connector (20) is greater than the thickness of the circular main duct (10).

8. An exhaust system, characterized by, Includes the duct structure described in any one of claims 1 to 7.

9. The exhaust system according to claim 8, characterized in that, The ventilation system also includes a damper connected to the rectangular air outlet.

10. The exhaust system of claim 8 or 9, wherein The exhaust system also includes guide vanes, which are located inside the circular main duct (10).

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