A universally adjustable connector and a highly sealed exhaust duct

Abstract

This utility model discloses a universally adjustable connector and a highly airtight exhaust duct. The universally adjustable connector includes a body with spherical arc edges at both ends for airtight connection with the end openings of the exhaust duct. The body has vent holes for connecting the exhaust ducts of upper and lower floors. This utility model allows for universal adjustment during on-site construction based on building errors, maintaining a highly airtight connection at the joints between each exhaust duct section.

Description

Technical Field

[0001] This utility model relates to exhaust ducts in buildings, and in particular to a universally adjustable connector and a highly airtight exhaust duct. Background Technology

[0002] Currently, most residential kitchen and bathroom exhaust systems use precast cement exhaust ducts. CN205296741U discloses a combined exhaust duct, which includes multiple exhaust pipe sections and multiple hollow sleeves. Adjacent exhaust pipe sections are connected through the same sleeve, and the sleeves are equipped with limiting plates around their perimeter. Currently, exhaust ducts on the market are manufactured in sections and installed by splicing them together on-site. Due to errors in manufacturing and installation processes, the joints between exhaust pipe sections cannot be perfectly aligned while maintaining overall verticality. These errors accumulate, causing the gaps at the joints to widen. Even with on-site adjustments, gaps remain, leading to smoke leakage. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides an exhaust duct that can be universally adjusted according to building errors during on-site construction, and maintains a high degree of airtightness at the joints between each exhaust duct section.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] A universally adjustable connector includes a body with spherical arc edges at both ends for airtight connection with the end opening of an exhaust duct. The body is provided with vent holes for connecting the exhaust ducts of the upper and lower layers.

[0006] The main body is a spherical arc surface connector, and the arc edges at the upper and lower ends of the spherical arc surface are airtightly connected to the end opening of the exhaust channel.

[0007] Alternatively, the main body may be a circular pipe, with flanges or ferrules at both ends, wherein the flanges or ferrules are spherical arc edges. The spherical arc edges may be convex or concave.

[0008] The vent is aligned with the central axis of the body.

[0009] A highly sealed exhaust duct includes multiple exhaust duct sections, each exhaust duct section has an air inlet on its side, and adjacent exhaust duct sections are universally connected by the aforementioned universally adjustable connector.

[0010] Supporting steel bars are provided below the burr edge, and the supporting steel bars are fixedly connected to the floor slab.

[0011] Compared to existing technologies, the advantages of this invention are as follows: Because adjacent exhaust duct sections are connected by a universally adjustable connector, adjustments can be made during on-site construction to account for building errors, preventing the accumulation of errors. The spherical arc edge fits tightly with the end openings of each exhaust duct section, maintaining a high degree of airtightness at the joints, effectively preventing waterproofing, smoke transmission, and odor transfer. The supporting steel bars distribute the weight of each exhaust duct section across the floor slabs, effectively preventing weight accumulation on the bottom-floor exhaust ducts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the universally adjustable connector structure of Embodiment 1 of this utility model.

[0013] Figure 2 This is an exploded view of the structure of the high-sealing exhaust duct in Embodiment 1 of this utility model.

[0014] Figure 3 This is a schematic diagram of the universally adjustable connector structure in Embodiment 2 of this utility model.

[0015] Figure 4 for Figure 3 Top view.

[0016] Figure 5 for Figure 3 Side view.

[0017] Figure 6 This is an exploded view of the structure of the high-sealing exhaust duct in Embodiment 2 of this utility model.

[0018] Figure 7 This is a schematic diagram of the installation of the universally adjustable connector in Embodiment 2 of this utility model.

[0019] In the diagram: 1. Exhaust duct; 2. Adjustable connector; 3. Vent hole; 4. Air inlet; 5. End opening; 6. Spherical arc edge; 7. Supporting steel bar; 8. Floor slab. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0021] like Figure 1 As shown, a universally adjustable connector includes a body with spherical arc edges at both ends for airtight connection with the end opening of an exhaust duct. The body is provided with vent holes for connecting the exhaust ducts of the upper and lower layers.

[0022] The main body is a spherical arc surface connector, and the arc edges at the upper and lower ends of the spherical arc surface are airtightly connected to the end opening of the exhaust channel.

[0023] The vent is aligned with the central axis of the body.

[0024] like Figure 2 As shown, a highly sealed exhaust duct includes multiple exhaust duct sections, each exhaust duct section has an air inlet on its side, and adjacent exhaust duct sections are universally connected by the aforementioned universally adjustable connector.

[0025] Each exhaust duct section is omnidirectionally connected via adjustable connectors, allowing for adjustments during on-site construction to account for building errors and prevent cumulative variations. The spherical arc edges fit snugly into the end openings of each exhaust duct section, maintaining a high degree of airtightness at the joints and effectively preventing waterproofing, smoke ingress, and odor transfer. Example

[0026] like Figure 3-5 As shown, a universally adjustable connector includes a body with spherical arc edges at both ends for airtight connection with the end opening of an exhaust duct. The body is provided with vent holes for connecting the exhaust ducts of the upper and lower layers.

[0027] The main body is a circular pipe, and both ends of the circular pipe are welded with burrs, which are spherical arc edges, or the two ends of the circular pipe are stamped into flanges, which are also spherical arc edges. The spherical arc edges are either convex spherical arc edges, and correspondingly, the end opening of the exhaust channel that is airtightly connected to it is provided with a concave spherical arc edge; or the spherical arc edges are either concave spherical arc edges, and correspondingly, the end opening of the exhaust channel that is airtightly connected to it is provided with a convex spherical arc edge.

[0028] The vent is aligned with the central axis of the body.

[0029] like Figure 6 As shown, a highly sealed exhaust duct includes multiple exhaust duct sections, each exhaust duct section has an air inlet on its side, and adjacent exhaust duct sections are universally connected by the aforementioned universally adjustable connector.

[0030] like Figure 7 As shown, a supporting steel bar is provided below the burr, and the supporting steel bar is fixedly connected to the floor slab.

[0031] Each exhaust duct section is omnidirectionally connected via adjustable connectors, allowing for adjustments during on-site construction to account for building errors and prevent the accumulation of errors. The spherical arc edges fit snugly into the end openings of each exhaust duct section, maintaining a high degree of airtightness at the joints, effectively preventing waterproofing, smoke transmission, and odor transfer. Supporting steel bars distribute the weight of each exhaust duct section across the floor slabs, effectively preventing weight accumulation on the bottom-floor exhaust ducts.

Claims

1. A universal joint comprising a body, characterized in that The main body has spherical arc edges at both ends, which are used to connect with the end opening of the exhaust duct in an airtight manner. The main body is provided with vent holes, which are used to connect the exhaust ducts of the upper and lower layers.

2. A universally adjustable connection as claimed in claim 1, characterized in that The main body is a spherical arc surface connector, and the arc edges at the upper and lower ends of the spherical arc surface are airtightly connected to the end opening of the exhaust channel.

3. A universally adjustable coupling according to claim 1, wherein The main body is a circular pipe, and both ends of the circular pipe are provided with burrs or flanges, and the burrs or flanges are spherical arc edges.

4. A universally adjustable coupling according to claim 1, wherein The spherical arc edge is either a convex spherical arc edge or a concave spherical arc edge.

5. A universally adjustable connection according to any one of claims 1-4, characterized in that The vent is aligned with the central axis of the body.

6. A highly airtight exhaust duct, comprising multiple exhaust duct sections, each exhaust duct section having an air inlet on its side, characterized in that... The two adjacent exhaust passages are universally connected by a universally adjustable connector as described in claim 1 or 2.

7. A highly airtight exhaust duct, comprising multiple exhaust duct sections, each exhaust duct section having an air inlet on its side, characterized in that... The two adjacent exhaust passages are universally connected by a universally adjustable connector as described in claim 3 or 4.

8. A highly airtight exhaust duct according to claim 7, characterized in that... Supporting steel bars are provided below the burr edge, and the supporting steel bars are fixedly connected to the floor slab.

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