A reversibly adjustable rectangular through-hole connector and a highly airtight exhaust duct

Abstract

This utility model discloses a universally adjustable rectangular through-hole connector and a highly airtight exhaust duct. The universally adjustable rectangular through-hole connector includes an upper body and a lower body, both of which are rectangular frames. One end of each of the four sides of the rectangular frame is a spherical arc edge, and the other end of each of the four sides of the rectangular frame is airtightly connected to the end opening of the exhaust duct. The spherical arc edges of the upper and lower bodies fit together in a concave-convex fit. This utility model allows for universal adjustment during on-site construction according to building errors, maintaining a highly airtight connection at the joints between each section of the exhaust duct.

Description

Technical Field

[0001] This utility model relates to exhaust ducts in buildings, and in particular to a rectangular through-hole connector that can be adjusted in all directions 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 production and installation processes, the joints of these 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. Furthermore, existing exhaust ducts are mostly precast pipes with rectangular end openings. Achieving universal connections at rectangular joints is a problem with current technology. 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 rectangular through-hole connector with universal adjustment includes an upper body and a lower body. The upper body and the lower body are rectangular frames. One end of one of the four sides of the rectangular frame is a spherical arc edge. The other end of the four sides of the rectangular frame is airtightly connected to the end opening of the exhaust duct. The spherical arc edges of the upper body and the lower body are in a concave-convex fit.

[0006] A reversibly adjustable rectangular through-hole connector includes a body, which is a rectangular frame. One end of one of the four sides of the rectangular frame is a spherical arc edge. The other end of the four sides of the rectangular frame is airtightly connected to the end opening of one end of an exhaust duct. The spherical arc edge is used to maintain an airtight fit with the end opening of the other end of the exhaust duct.

[0007] The spherical arc edge is a spherical convex arc edge, and the four borders of the end opening at the other end of the exhaust channel are spherical concave arc edges; or the spherical arc edge is a spherical concave arc edge, and the four borders of the end opening at the other end of the exhaust channel are spherical convex arc edges.

[0008] A rectangular through-hole connector with universal adjustment includes a body, which is a rectangular frame. The ends of the four sides of the rectangular frame are spherical arc edges, which are used to maintain airtightness by engaging with the end opening of the exhaust duct.

[0009] The four spherical arc edges of the rectangular frame have the same curvature.

[0010] 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 rectangular through-hole connector.

[0011] A highly airtight exhaust duct includes multiple exhaust duct sections. Each exhaust duct section has an air inlet on its side. The cross-section of the exhaust duct is rectangular. The four sides of one end of each exhaust duct section are spherical convex arc edges, and the four sides of the other end are spherical concave arc edges. Adjacent exhaust duct sections maintain airtightness through the cooperation of the spherical convex arc edges and the spherical concave arc edges.

[0012] The convex and concave spherical arc edges have the same curvature.

[0013] Compared to existing technologies, the advantages of this invention are as follows: Because adjacent exhaust duct sections are connected via a universally adjustable rectangular through-hole connector, or because adjacent exhaust duct sections maintain airtightness through the fit of spherical convex and concave arc edges, universal adjustment can be made during on-site construction based on building errors, avoiding the accumulation of errors. The convex-concave fit between the spherical arc edges and the tight fit between the spherical arc edges and the end openings at both ends of each exhaust duct section ensures a high degree of airtightness at the joints between each exhaust duct section, providing excellent waterproofing, smoke prevention, and odor prevention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the universally adjustable rectangular through-hole connector structure of Embodiment 1 of this utility model.

[0015] Figure 2 for Figure 1 The long side view of the rectangular frame.

[0016] Figure 3 for Figure 1 The short side view of the rectangular frame.

[0017] Figure 4 for Figure 1 Top view of the upper and lower bodies with their spherical arc edges forming a concave-convex fit.

[0018] Figure 5 This is an exploded view of the structure of the high-sealing exhaust duct in Embodiment 1 of this utility model.

[0019] Figure 6This is a schematic diagram of the universally adjustable rectangular through-hole connector structure of Embodiment 2 of this utility model.

[0020] Figure 7 for Figure 6 Side view.

[0021] Figure 8 for Figure 6 Top view.

[0022] Figure 9 This is an exploded view of the structure of the high-sealing exhaust duct in Embodiment 2 of this utility model.

[0023] In the diagram: 1. Exhaust duct; 2. Rectangular through-hole connector with universal adjustment; 3. Spherical convex arc edge; 4. Spherical concave arc edge; 5. Air inlet; 6. End opening; 7. Upper body; 8. Lower body. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0025] like Figure 1-4 As shown, a omnidirectionally adjustable rectangular through-hole connector includes an upper body and a lower body, both of which are rectangular frames. One end of each of the four sides of the rectangular frame is a spherical arc edge, and the other ends of the four sides of the rectangular frame are airtightly connected to the end opening of an exhaust duct. The convex spherical arc surface of the upper body and the concave spherical arc edge of the lower body are in a concave-convex fit. Similarly, the concave spherical arc surface of the upper body and the convex spherical arc edge of the lower body are in a concave-convex fit. The curvature of the spherical arc edges of the four sides of the rectangular frame is consistent.

[0026] like Figure 5 As shown, a highly airtight exhaust duct includes multiple exhaust duct sections, each with an air inlet on its side. Adjacent exhaust duct sections are connected by a universally adjustable rectangular through-hole connector. This allows for on-site adjustment to accommodate construction errors, preventing the accumulation of errors. The spherical arc edges of the upper and lower bodies maintain a highly airtight seal at the joints between each exhaust duct section, effectively preventing waterproofing, smoke transmission, and odor transfer. Example

[0027] like Figure 6-8 As shown, a rectangular through-hole connector with universal adjustment includes a body, which is a rectangular frame. One end of one of the four sides of the rectangular frame is a spherical arc edge. The other end of the four sides of the rectangular frame is airtightly connected to the end opening of one end of the exhaust channel. The spherical arc edge is used to maintain airtightness by engaging with the end opening of the other end of the exhaust channel.

[0028] The spherical arc edge is a concave spherical arc edge, and the four borders of the end opening at the other end of the exhaust channel are convex spherical arc edges. Similarly, the spherical arc edge is a convex spherical arc edge, and the four borders of the end opening at the other end of the exhaust channel are concave spherical arc edges; the curvature of the spherical arc edges of the four borders of the rectangular frame is consistent.

[0029] like Figure 9 As shown, a highly airtight exhaust duct includes multiple exhaust duct sections, each with an air inlet on its side. Adjacent exhaust duct sections are connected by a universally adjustable rectangular through-hole connector. This allows for on-site adjustment to accommodate construction errors, preventing the accumulation of errors. The spherical arc edge at one end of the main body engages with the concave-convex shape of one end of the exhaust duct, maintaining a highly airtight seal at the joints between each exhaust duct section, effectively preventing waterproofing, smoke transmission, and odor transfer. Example

[0030] A omnidirectionally adjustable rectangular through-hole connector includes a body, which is a rectangular frame. The ends of the four sides of the rectangular frame are spherical arc edges, which are used to maintain an airtight fit with the end opening of an exhaust duct. The curvature of the spherical arc edges on the four sides of the rectangular frame is consistent.

[0031] A highly airtight exhaust duct comprises multiple exhaust duct sections, each with an air inlet on its side. Adjacent exhaust duct sections are universally connected via a universally adjustable rectangular through-hole connector. This allows for on-site adjustment to accommodate construction errors, preventing the accumulation of errors. The spherical arc edge fits snugly with the end opening of each exhaust duct section. This maintains a highly airtight seal at the joints between exhaust duct sections, effectively preventing waterproofing, smoke transmission, and odor transfer. Example

[0032] A highly airtight exhaust duct comprises multiple exhaust duct sections, each with an air inlet on its side. The cross-section of each exhaust duct is rectangular. One end of each exhaust duct has four convex spherical arc edges, while the other end has four concave spherical arc edges. Adjacent exhaust duct sections maintain an airtight seal through the cooperation of the convex and concave spherical arc edges. The curvature of the convex and concave spherical arc edges is consistent. During on-site construction, omnidirectional adjustments can be made according to building errors, avoiding the accumulation of errors. The cooperation of the convex and concave spherical arc edges maintains a highly airtight seal at the joints between each exhaust duct section, providing excellent waterproofing, smoke prevention, and odor prevention.

Claims

1. A rectangular through-hole connector with universal adjustment, comprising an upper body and a lower body, wherein the upper body and the lower body are rectangular frames, characterized in that... One end of the four sides of the rectangular frame is a spherical arc edge, and the other end of the four sides of the rectangular frame is airtightly connected to the end opening of the exhaust duct. The spherical arc edges of the upper body and the lower body are in concave-convex fit.

2. A universally adjustable rectangular through-hole connector, comprising a body, wherein the body is a rectangular frame, characterized in that... One end of the four sides of the rectangular frame is a spherical arc edge, and the other end of the four sides of the rectangular frame is airtightly connected to the end opening of one end of the exhaust duct. The spherical arc edge is used to maintain airtightness by engaging with the end opening of the other end of the exhaust duct.

3. The universally adjustable rectangular through-hole connector according to claim 2, characterized in that... The spherical arc edge is a spherical convex arc edge, and the four borders of the end opening at the other end of the exhaust channel are spherical concave arc edges; or the spherical arc edge is a spherical concave arc edge, and the four borders of the end opening at the other end of the exhaust channel are spherical convex arc edges.

4. A rectangular through-hole connector with universal adjustment, comprising a body, wherein the body is a rectangular frame, and the ends of the four sides of the rectangular frame are spherical arc edges, wherein the spherical arc edges are used to maintain airtightness by engaging with the end opening of the exhaust passage.

5. A rectangular through-hole connector with universal adjustment according to any one of claims 1-4, characterized in that... The four spherical arc edges of the rectangular frame have the same curvature.

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 rectangular through-hole connector with universal adjustment as described in any one of claims 1-4.

7. A highly airtight exhaust duct, comprising multiple exhaust duct sections, each exhaust duct section having an air inlet on its side, and the exhaust duct having a rectangular cross-section, characterized in that... Each exhaust duct has four spherical convex arc edges at one end and four spherical concave arc edges at the other end. Adjacent exhaust ducts maintain airtightness through the cooperation of the spherical convex arc edges and the spherical concave arc edges.

8. A highly airtight exhaust duct according to claim 7, characterized in that... The convex and concave spherical arc edges have the same curvature.

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