Installation structure of green low-carbon air pipe and outer wall air opening

By installing a hollow fixing frame and elastic heat insulation gasket in the air outlet, combined with right-angle steel fixing and tapered duct connection, and adding heat insulation and waterproof materials, the problems of poor sealing, high noise, and poor thermal bridging effect at the connection between the duct and the external wall air outlet are solved, realizing convenient disassembly and assembly of the duct and the building's energy-saving effect.

CN224284905UActive Publication Date: 2026-05-26SHANGHAI JOHNSON ARCHITECTURAL & ENG DESIGN CONSULTANTS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JOHNSON ARCHITECTURAL & ENG DESIGN CONSULTANTS
Filing Date
2025-06-11
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing technologies, the connection between traditional air ducts and external air outlets in ventilation systems suffers from problems such as poor sealing, high noise, inadequate thermal bridging, and difficulty in disassembling the air ducts.

Method used

The system uses a hollow fixed frame in the air outlet, with the skirt of the duct clipped into the clip groove of the fixed frame and an elastic heat insulation gasket in the clip groove. It adopts a right-angle steel fixed frame, a tapered duct transition connection, and adds thermal insulation material and waterproof vapor barrier material, combined with the design of insect and dust prevention netting.

Benefits of technology

It improves the sealing performance of air ducts and air outlets, reduces noise, enhances thermal bridging effect, facilitates air duct installation and removal, ensures building energy conservation, prevents moisture from entering insulation materials, and reduces the risk of equipment damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of ventilation, and provides a green low-carbon air pipe and outer wall air port mounting structure which comprises an outer wall provided with an air port, shutters mounted in the air port and an air pipe arranged indoors and communicated with the air port. The shutter is installed at the position, close to the outdoor space, of the air opening, a hollow fixing frame is installed at the position, close to the indoor space, of the air opening, the fixing frame is provided with a clamping groove, and the space between the connecting position of the shutter and the air opening and the fixing frame is filled with heat insulation materials. The end, close to the air opening, of the air pipe is provided with a skirt edge which is folded outwards, and the skirt edge of the air pipe is connected into the clamping groove in a clamped mode. The hollow fixing frame is arranged in the tuyere, the skirt edge of the air pipe is clamped in the clamping groove of the fixing frame, and the air pipe is movably connected with the tuyere, so that the noise of the air pipe can be reduced, the sealing performance of the joint of the air pipe and the tuyere is ensured, the heat bridge breaking effect of the air pipe and the tuyere can be improved, and in addition, the air pipe is also convenient to disassemble and assemble.
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Description

Technical Field

[0001] This application relates to the field of ventilation technology, and in particular to an installation structure for a green and low-carbon air duct and an external wall air outlet. Background Technology

[0002] Building ventilation and air conditioning systems typically have air inlets and outlets leading to the outside. These inlets / outlets are located on the building's exterior walls and have louvers near the exterior. One end of the indoor duct is embedded in the side of the inlet / outlet closest to the interior. Traditionally, one end of the indoor duct is inserted into the inlet / outlet, with expanding foam used to seal the gap. While simple and quick, this method has several drawbacks, including: duct vibration causing widening gaps between the duct and the exterior wall, leading to poor duct sealing; increased duct noise; difficulty in disassembling the duct when replacing the insect and dust filters on the louvers; and poor thermal bridging between the duct and the outlet, impacting the building's overall energy efficiency. Utility Model Content

[0003] To address the aforementioned problems, this application provides an installation structure for a green, low-carbon air duct and an external wall air outlet. The structure is ingeniously designed and simple. This application incorporates a hollow fixing frame within the air outlet, with the duct's skirt snapped into a groove in the fixing frame. The duct and air outlet are connected movably, which not only reduces duct noise and ensures a tight seal at the connection point but also improves the thermal bridging effect between the duct and air outlet. Furthermore, the duct is easy to install and disassemble. The technical solution adopted in this application is as follows:

[0004] An installation structure for a green, low-carbon air duct and an external wall air vent includes an external wall with an air vent, louvers installed inside the air vent, and an air duct located indoors and connected to the air vent. The louvers are installed at the air vent near the outside, and a hollow fixing frame is installed at the air vent near the inside. The fixing frame has a snap-fit ​​groove, and the connection point between the louvers and the air vent and the fixing frame is filled with heat-insulating material. One end of the air duct near the air vent has an outwardly folded skirt, and the skirt of the air duct is snapped into the snap-fit ​​groove.

[0005] By setting a hollow fixed frame in the air outlet, and the skirt of the air duct is snapped into the snap-fit ​​groove of the fixed frame, the air duct and the air outlet are connected in a movable manner. This not only reduces the noise of the air duct and ensures the sealing of the connection between the air duct and the air outlet, but also improves the thermal bridging effect between the air duct and the air outlet. In addition, the air duct is also easy to disassemble and assemble.

[0006] In some embodiments, the snap-fit ​​groove is provided with an elastic heat-insulating gasket, the elastic heat-insulating gasket is disposed around the skirt of the air duct, and the elastic heat-insulating gasket is located between the snap-fit ​​groove and the skirt.

[0007] By setting elastic thermal insulation gaskets in the snap-fit ​​grooves, the sealing effect between the duct and the fixed frame is improved. At the same time, the elastic thermal insulation gaskets play a role in thermal insulation (thermal bridge breaking), ensuring the energy-saving effect of the building.

[0008] In some embodiments, the fixing frame is fixed to the air vent by a first right-angle steel. The first right-angle steel is located at the corner of the air vent near the interior. One side of the first right-angle steel is connected to the fixing frame using a self-tapping screw, and the other side is connected to the inner side of the exterior wall using a self-tapping screw. Using a first right-angle steel to fix the fixing frame is simple in structure and easy to install.

[0009] In some embodiments, the side of the fixing frame closest to the outside is fixed to the air vent by a second right-angle steel. The second right-angle steel is located inside the air vent, with one side of the second right-angle steel connected to the fixing frame by a self-tapping screw and the other side connected to the air vent by a self-tapping screw.

[0010] By setting a second right-angle steel, the fixing effect of the frame is strengthened, ensuring that the frame is stable and not easily loosened.

[0011] In some embodiments, the duct includes a first duct and a second duct, wherein the first duct is a tapered structure with a variable cross-section along its length, the second duct has a constant cross-section along its length, the skirt is provided at the larger end of the first duct port, and the smaller end of the first duct port is connected to the second duct.

[0012] By setting up a first air duct with a conical structure, the first air duct acts as a transition, allowing the air outlet with a larger cross-section to connect with the second air duct with a smaller cross-section.

[0013] In some embodiments, the smaller end of the first duct port overlaps with the second duct, and the overlapping portion of the first and second ducts is connected by self-tapping screws. This method of connecting the first and second ducts avoids protruding parts at the connection point, facilitating the later application of insulation, waterproofing, or other functional materials at the connection.

[0014] In some embodiments, the outer surface of the duct is covered with thermal insulation material. By covering the duct with thermal insulation material, heat exchange between the gas inside the duct and the indoor air can be reduced or even avoided, ensuring the air conditioning or fan efficiency, thereby ensuring the building's energy-saving effect.

[0015] In some embodiments, the outer surface of the insulation material is covered with a waterproof and vapor-barrier material to prevent moisture from entering the insulation material. By covering the insulation material with a waterproof and vapor-barrier material, moisture can be prevented from entering the insulation material, reducing the risk of insulation material failure.

[0016] In some embodiments, the louvers are rainproof louvers.

[0017] In some implementations, the side of the louvers closest to the interior is equipped with an insect-proof and dust-proof net. By installing the insect-proof and dust-proof net, the entry of insects, dust, and other debris into the duct can be reduced or even avoided, thereby reducing the risk of damage to the equipment connected to the duct and ensuring that the air inside the duct is not polluted.

[0018] The green and low-carbon air duct and external wall air outlet installation structure provided in this application has at least one of the following beneficial effects:

[0019] 1. The green and low-carbon air duct and external wall air outlet installation structure provided in this application is to set a hollow fixed frame in the air outlet, and the skirt of the air duct is snapped into the snap groove of the fixed frame. The air duct and the air outlet are movable. This not only reduces the noise of the air duct and ensures the sealing of the connection between the air duct and the air outlet, but also improves the thermal bridge insulation effect of the air duct and the air outlet. In addition, the air duct is also easy to disassemble and assemble.

[0020] 2. The green and low-carbon air duct and external wall air outlet installation structure provided in this application improves the sealing effect between the air duct and the fixed frame by setting an elastic heat insulation gasket in the snap-fit ​​groove. At the same time, the elastic heat insulation gasket plays a heat insulation role (thermal bridge breaking), ensuring the energy-saving effect of the building.

[0021] 3. The green and low-carbon air duct and external wall air outlet installation structure provided in this application uses a first right angle steel to fix the fixing frame. The first right angle steel structure is simple and easy to install.

[0022] 4. The installation structure of the green and low-carbon air duct and the external wall air outlet provided in this application strengthens the fixing effect of the fixing frame by setting a second right angle steel, ensuring that the fixing frame is firm and not easy to loosen.

[0023] 5. The green and low-carbon air duct and external wall air outlet installation structure provided in this application, by setting a first air duct with a conical structure, the first air duct plays a transition role, so that the air outlet with a larger cross section and the second air duct with a smaller cross section can be connected.

[0024] 6. The green and low-carbon air duct and external wall air outlet installation structure provided in this application, wherein the first air duct and the second air duct overlap each other, and the overlapping part of the two is connected by self-tapping screws. By adopting this connection method of the first air duct and the second air duct, there will be no protruding parts at the connection point, which makes it convenient to lay other functional materials such as heat preservation and waterproofing at the connection point later.

[0025] 7. The green and low-carbon air duct and external wall air outlet installation structure provided in this application can reduce or even avoid heat exchange between the air inside the duct and the indoor air by laying thermal insulation material on the outside of the air duct, thus ensuring the air conditioning effect or fan effect and ensuring the building energy-saving effect.

[0026] 8. The green and low-carbon air duct and external wall air outlet installation structure provided in this application can prevent moisture from entering the insulation material by applying a waterproof and vapor barrier material on the outside of the insulation material, thereby reducing the risk of insulation material failure.

[0027] 9. The green and low-carbon air duct and external wall air outlet installation structure provided in this application can reduce or even avoid the entry of mosquitoes, dust and other debris into the air duct by setting insect and dust prevention nets, thereby reducing the risk of damage to the equipment connected to the air duct and ensuring that the air inside the air duct is not polluted. Attached Figure Description

[0028] The preferred embodiments will be explained below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further illustrate the above-mentioned characteristics, technical features, advantages, and implementation methods of an installation structure for a green and low-carbon air duct and external wall air outlet:

[0029] Figure 1 This is a schematic diagram of the overall structure of the installation structure in this application;

[0030] Figure 2 yes Figure 1 An enlarged view of part A in the embodiment;

[0031] Figure 3 It is a cross-sectional view of a fixed frame;

[0032] Figure 4 yes Figure 1 An enlarged view of part B in the embodiment.

[0033] Explanation of icon numbers:

[0034] 1. Exterior wall, 2. Louver, 3. Air duct, 31. First air duct, 31. Skirt, 31. Second air duct, 32. Fixing frame, 4. Clip groove, 41. Thermal insulation material, 5. First right angle steel, 6. Second right angle steel, 7. Thermal insulation material, 8. Waterproof and vapor barrier material, 9. Insect and dustproof netting, 10. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0036] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0037] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] refer to Figures 1-4 This application provides an installation structure for a green and low-carbon air duct and an external wall air outlet, including an external wall 1 with an air outlet, louvers 2 installed inside the air outlet, and an air duct 3 located indoors and connected to the air outlet; the louvers 2 are installed at the position of the air outlet near the outside, and a hollow fixing frame 4 is installed at the position of the air outlet near the inside, the fixing frame 4 is provided with a snap-fit ​​groove 41, and the connection position between the louvers 2 and the air outlet and the fixing frame 4 is filled with heat insulation material 5; the end of the air duct 3 near the air outlet is provided with an outwardly folded skirt 311, and the skirt 311 of the air duct 3 is snapped into the snap-fit ​​groove 41.

[0041] Specifically, the insulation material 5 can be expanded foam, rock wool, or aerogel felt, etc. The fixing frame 4 can be made of materials such as plastic steel or aluminum alloy. It can be understood that by setting a hollow fixing frame 4 in the air outlet, and the skirt 311 of the air duct 3 is snapped into the snap-fit ​​groove 41 of the fixing frame 4, the air duct 3 and the air outlet are in a movable connection. This not only reduces the noise of the air duct 3 and ensures the sealing of the connection between the air duct 3 and the air outlet, but also improves the thermal bridging effect between the air duct 3 and the air outlet. In addition, the air duct 3 is also easy to disassemble and assemble.

[0042] refer to Figures 1-4 In one embodiment, the snap-fit ​​groove 41 is provided with an elastic heat insulation gasket (not shown in the figure), the elastic heat insulation gasket is arranged around the skirt 311 of the air duct 3, and the elastic heat insulation gasket is located between the snap-fit ​​groove 41 and the skirt 311.

[0043] Specifically, the elastic thermal insulation gasket can be made of materials such as rubber, silicone, or polytetrafluoroethylene (PTFE). It is easy to understand that by setting the elastic thermal insulation gasket in the snap-fit ​​groove 41, the sealing effect between the duct 3 and the fixed frame 4 is improved. At the same time, the elastic thermal insulation gasket acts as thermal insulation (thermal bridge), ensuring the building's energy-saving effect.

[0044] refer to Figures 1-3 In one embodiment, the fixing frame 4 is fixed to the air vent by a first right-angle steel 6. The first right-angle steel 6 is located at the corner of the air vent near the interior. One side of the first right-angle steel 6 is connected to the fixing frame 4 with a self-tapping screw, and the other side is connected to the inner side of the exterior wall 1 with a self-tapping screw. The fixing frame 4 is fixed by the first right-angle steel 6, which has a simple structure and is easy to install.

[0045] refer to Figures 1-3 In one embodiment, the side of the fixed frame 4 closest to the outside is fixed to the air vent by a second right-angle steel 7. The second right-angle steel 7 is located inside the air vent, and one side of the second right-angle steel 7 is connected to the fixed frame 4 by a self-tapping screw, and the other side is connected to the air vent by a self-tapping screw.

[0046] It is worth noting that by setting the second right-angle steel 7, the fixing effect on the fixed frame 4 is strengthened, ensuring that the fixed frame 4 is stable and not easy to loosen.

[0047] refer to Figure 1 , Figure 4In one embodiment, the duct 3 includes a first duct 31 and a second duct 32. The first duct 31 has a tapered structure with a variable cross-section along its length, while the second duct 32 has a constant cross-section along its length. A skirt 311 is provided at the larger end of the first duct 31, and the smaller end of the first duct 31 is connected to the second duct 32. It is important to note that by setting the tapered structure of the first duct 31, the first duct 31 acts as a transition, allowing the larger cross-section air outlet to connect with the smaller cross-section second duct 32.

[0048] refer to Figure 1 , Figure 4 In one embodiment, the smaller end of the first duct 31 overlaps with the second duct 32, and the overlapping portion of the first duct 31 and the second duct 32 is connected by self-tapping screws. This method of connecting the first duct 31 and the second duct 32 ensures that there are no protruding parts at the connection point, facilitating the later application of insulation, waterproofing, or other functional materials at the connection point.

[0049] refer to Figure 1 , Figure 2 , Figure 4 In one embodiment, the outer surface of the duct 3 is covered with thermal insulation material 8. By covering the duct 3 with thermal insulation material 8, heat exchange between the gas inside the duct and the indoor air can be reduced or even avoided, ensuring the air conditioning or fan performance, thereby ensuring the building's energy efficiency. Specifically, the thermal insulation material 8 can be made of materials such as rock wool board, glass wool, ceramic fiber blanket, aluminum foil-faced glass wool, or vermiculite board, and should meet the fire resistance rating and other requirements in the specifications.

[0050] refer to Figure 1 , Figure 2 , Figure 4 In one embodiment, a waterproof and vapor-barrier material 9 is applied to the outer surface of the insulation material 8. This material prevents moisture from entering the insulation material 8. By applying this waterproof and vapor-barrier material to the outside of the insulation material 8, moisture can be prevented from entering, reducing the risk of failure of the insulation material 8. Specifically, the waterproof and vapor-barrier material 9 can be a polyethylene film, a polypropylene film, aluminum foil, composite aluminum foil, or a vapor barrier membrane, etc.

[0051] In one embodiment, louver 2 is a rainproof louver. The rainproof louver has good rainproof capability and can prevent rainwater from entering the air duct 3.

[0052] refer to Figure 1 , Figure 2In one embodiment, the louver 2 is provided with an insect-proof and dust-proof net 10 on the side closest to the room. By setting the insect-proof and dust-proof net 10, the entry of insects, dust and other debris into the air duct 3 can be reduced or even avoided, thereby reducing the risk of damage to the equipment connected to the air duct 3 and ensuring that the air inside the air duct 3 is not polluted.

[0053] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A mounting structure of a green low-carbon air pipe and an outer wall air port, characterized in that, The system includes an exterior wall with an air vent, louvers installed inside the air vent, and an indoor duct connected to the air vent. The louvers are installed near the air vent to the outside, and a hollow fixed frame is installed near the air vent to the inside. The fixed frame has a snap-fit ​​groove, and the connection between the louvers and the air vent and the fixed frame is filled with heat-insulating material. The end of the duct near the air vent has an outwardly folded skirt, which is snapped into the snap-fit ​​groove.

2. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 1, characterized in that, The snap-fit ​​groove is provided with an elastic heat insulation gasket, which is arranged around the skirt of the air duct and is located between the snap-fit ​​groove and the skirt.

3. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 1, characterized in that, The fixing frame is fixed to the air vent by a first right angle steel. The first right angle steel is located at the corner of the air vent near the interior. One side of the first right angle steel is connected to the fixing frame with a self-tapping screw, and the other side is connected to the inner side of the exterior wall with a self-tapping screw.

4. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 3, characterized in that, The fixed frame is fixed to the air vent on the side closest to the outside by a second right-angle steel. The second right-angle steel is located inside the air vent. One side of the second right-angle steel is connected to the fixed frame with a self-tapping screw, and the other side is connected to the air vent with a self-tapping screw.

5. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 1, characterized in that, The air duct includes a first air duct and a second air duct. The first air duct is a tapered structure with a variable cross-section along its length, while the second air duct has a constant cross-section along its length. The skirt is located at the larger end of the first air duct port, and the smaller end of the first air duct port is connected to the second air duct.

6. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 5, characterized in that, The smaller end of the first duct port is connected to the second duct, and the overlapping part of the first duct and the second duct is connected by self-tapping screws.

7. The installation structure of a green low-carbon air duct and external wall air outlet according to any one of claims 1-6, characterized in that, The outer surface of the air duct is covered with thermal insulation material.

8. The installation structure of a green low-carbon air duct and external wall air outlet according to claim 7, characterized in that, The outer surface of the insulation material is covered with a waterproof and vapor-barrier material, which is used to prevent moisture from entering the insulation material.

9. The installation structure of a green low-carbon air duct and external wall air outlet according to any one of claims 1-6, characterized in that, The louvers are rainproof louvers.

10. The installation structure of a green low-carbon air duct and external wall air outlet according to any one of claims 1-6, characterized in that, The louvers are equipped with an insect-proof and dust-proof net on the side closest to the interior.