Ventilation hole structure for existing building

Abstract

The ventilation hole structure for the existing building comprises a ventilation pipe and a conversion air bellow arranged indoors, an installation opening is formed in the first side wall of the conversion air bellow, and the ventilation pipe is installed at the installation opening in a sealed mode; a first ventilation opening is formed in the second side wall of the conversion air box, a second ventilation opening is formed in the outer wall of the existing building, and a shutter is arranged in the second ventilation opening. The first ventilation opening and the second ventilation opening are coaxially formed and are vertically staggered. The adapter bellows is installed on the indoor side of the outer wall of the existing building, the ventilation pipe and the second ventilation opening of the existing building are in butt joint in an up-and-down staggered mode, the ventilation requirement is met, the outer vertical face structure of the existing building is not changed, and high economical efficiency and operability are achieved; moreover, the conversion air bellow has flow equalizing and pressure equalizing effects, so that the resistance loss of airflow flowing through the box body can be reduced, and energy conservation and emission reduction can be realized.

Description

Technical Field

[0001] This utility model relates to the field of renovation of old buildings, and in particular to a ventilation opening structure for existing buildings. Background Technology

[0002] Currently, the public facilities in many older buildings can no longer meet people's work and living needs. To meet these needs, it is often necessary to add equipment that meets current standards and specifications. This requires modifications to existing buildings to accommodate the installation or operation of the new equipment. For example, installing ventilation equipment inside the building or creating ventilation openings in the exterior walls.

[0003] Currently, existing building renovation projects, based on relevant national policies, must achieve goals such as lower investment, simpler construction, and lower carbon emissions compared to new construction. Therefore, in actual renovation projects, existing buildings often face challenges such as limited interior space, and the need to protect the building's architectural style prevents the creation of sufficiently wide openings in the exterior walls, resulting in situations where ventilation ducts and ventilation openings are positioned in a corresponding and interconnected manner.

[0004] In conclusion, designing a ventilation opening structure that can both preserve the building's appearance and connect the ventilation ducts to the outside is crucial for the renovation of existing old buildings. Summary of the Invention

[0005] In view of this, the present invention proposes a ventilation opening structure for existing buildings, which can connect the air duct and the ventilation opening through a conversion air box built in the existing building to ensure ventilation effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The ventilation opening structure for existing buildings described in this utility model includes a ventilation pipe and a conversion air box installed inside the existing building. An installation opening is provided on the first side wall of the conversion air box, and the ventilation pipe is sealed and installed at the installation opening. A first ventilation opening is provided on the second side wall of the conversion air box, and a second ventilation opening is provided on the exterior wall of the existing building opposite to the first ventilation opening. A louver for ventilation and rain protection is provided inside the second ventilation opening. The first and second side walls are arranged opposite each other, and the first and second ventilation openings are coaxially aligned and both located below the exterior windows or curtain walls of the existing building. The central axis of the first ventilation opening is lower than the central axis of the installation opening, causing the first ventilation opening and the installation opening to be staggered vertically.

[0008] The beneficial effects are as follows: This utility model installs a transition air box on the indoor side of the exterior wall of an existing building, allowing the ventilation duct and the second ventilation opening of the existing building to be vertically staggered and connected, thereby meeting the ventilation requirements of the newly installed equipment. Furthermore, this utility model, while satisfying ventilation needs, does not alter the exterior structure of the existing building, exhibiting strong economic efficiency and ease of operation. Moreover, the transition air box has the functions of equalizing flow and pressure, reducing airflow resistance loss as it passes through the box, achieving energy saving and emission reduction, and thus possessing energy-saving properties.

[0009] Preferably, the outward-flared edge at the installation port of the ventilation duct is attached to the first side wall, and an insulation layer is filled in the gap between the installation port and the ventilation duct. The ventilation duct is fixed to the outer wall of the first side wall by an angle steel. In actual installation, the angle steel is arranged circumferentially around the installation port, with one flange plate fixed to the ventilation duct by rivets and the other flange plate fixed to the outer wall of the first side wall by expansion bolts, making installation simple and convenient. In addition, the outward-flared edge has a limiting function, and its combination with the angle steel can realize the fixed installation of the ventilation duct.

[0010] More preferably, the inner wall of the conversion air box is coated with a cement mortar protective layer with a thickness of 10 mm to 20 mm, and the cement mortar protective layer and the inner wall of the ventilation duct are sealed with silicone. In actual construction, the cement mortar protective layer can be used to seal the outer edge of the ventilation duct to ensure a fixed effect.

[0011] More preferably, the conversion air box is built on the exterior wall of the existing building, and the distance between its first side wall and the second side wall is ≥400 mm; the ventilation pipe is a galvanized steel pipe with a rectangular cross-section, and its ventilation cross-sectional area is ≤1 / 2 of the area of ​​the first side wall. The ratio of the cross-sectional length to the cross-sectional width of the ventilation pipe is ≤4:1 to ensure that the ventilation requirements are met.

[0012] Compared with existing technologies, the advantages of this invention are as follows: This invention installs a transfer air box on the indoor side of the exterior wall of an existing building, allowing the ventilation duct and the second ventilation opening of the existing building to be vertically offset and connected, thereby meeting the ventilation requirements of the newly installed equipment. Furthermore, this invention, while satisfying ventilation needs, does not alter the exterior structure of the existing building, making it highly economical and easy to operate. Moreover, the transfer air box has the functions of equalizing flow and pressure, which can reduce the resistance loss of airflow through the box body, achieving energy conservation and emission reduction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle. Detailed Implementation

[0015] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0016] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0017] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0018] like Figure 1 As shown, this utility model proposes a ventilation opening structure for existing buildings, including a ventilation pipe 1 and a conversion air box 2 installed inside the existing building. The conversion air box 2 is constructed of masonry wall and is built on the interior side of the exterior wall 3 of the existing building. An installation port is provided on the first side wall 2.1 of the conversion air box 2 (arranged opposite to the exterior wall 3). The installation port has a rectangular structure, and the installation end of the ventilation pipe 1 is sealed and installed at the installation port. The second side wall 2.2 of the conversion air box 2 is built together with the exterior wall 3 of the existing building. A first ventilation port is reserved on the second side wall 2.2, which is directly opposite to the second ventilation opening 4 on the exterior wall 3. The first side wall 2.1 and the second side wall 2.2 are arranged opposite to each other. The first ventilation opening and the second ventilation opening 4 are opened on the same axis and are both located below the exterior window or curtain wall of the existing building. The central axis of the first ventilation opening is lower than the central axis of the installation port, so that the first ventilation opening and the installation port are staggered vertically.

[0019] This utility model achieves the conversion connection between indoor ventilation pipe 1 and second ventilation opening 4 by installing a conversion air box 2 inside an existing building, thus realizing ventilation without changing the exterior structure of the existing building. The construction is simple and convenient. In addition, the conversion air box 2 of this utility model has the functions of equalizing flow and pressure, which can reduce the resistance loss of airflow through the box body, thereby achieving a balance in terms of appearance, space and energy saving and emission reduction technology.

[0020] Combination Figure 1-2It can be seen that the outward flange 1.1 at the installation port of the ventilation pipe 1 is attached to the first side wall 2.1 to prevent it from falling off; the gap between the installation port and the ventilation pipe 1 is filled with an insulation layer 5 (insulation cotton can be used); the ventilation pipe 1 is fixed to the outer wall of the first side wall 2.1 by the angle steel 6; the angle steel 6 is arranged around the circumference of the installation port, one of its flanges is fixed to the ventilation pipe 1 by rivets, and the other flange is fixed to the outer wall of the first side wall 2.1 by expansion bolts. The combination of the outward flange 1.1 and the angle steel 6 effectively ensures the fixing effect of the ventilation pipe 1 and the conversion air box 2, and the construction is simple, convenient and easy to operate.

[0021] In actual construction, the wall thickness of the conversion air box 2 is 100 mm. Its inner and outer walls are coated with a cement mortar protective layer 7 with a thickness of 10 mm to 20 mm. The cement mortar protective layer 7 and the inner wall of the ventilation pipe 1 are sealed with silicone. The cement mortar protective layer seals the outer flange 1.1 of the ventilation pipe 1.

[0022] During actual construction, the distance between the first side wall 2.1 and the second side wall 2.2 is ≥400 mm to ensure that the conversion air box 2 can meet the actual ventilation requirements; the ventilation pipe 1 adopts a galvanized steel pipe with a rectangular cross-section, and its ventilation cross-sectional area is ≤1 / 2 of the area of ​​the first side wall 2.1. The ratio of the cross-sectional length to the cross-sectional width of the ventilation pipe 1 is ≤4:1.

[0023] During actual installation, a ventilation and rainproof louver 8 is installed in the second ventilation opening 4 of the exterior wall 3. The inner side of the louver 8 and the cement mortar protective layer are sealed with silicone, and its outer side is sealed with the protective layer of the existing building to reduce the impact of rainwater on the louver 8.

[0024] In actual construction, a conversion air box 2 can be directly built inside the exterior wall 3 of the existing building (its side walls are all masonry walls). During construction, a first ventilation opening and an installation opening are reserved. When the construction reaches the installation opening, the ventilation pipe 1 is placed directly at the installation opening, and then the conversion air box 2 is built, so that the outer flange 1.1 of the conversion air box 2 is attached to the first side wall 2.1 at the installation opening. An insulation layer 5 is filled between the ventilation pipe 1 and the installation opening, and the ventilation pipe 1 is fixed to the first side wall 2.1 using angle steel 6, screws, and expansion bolts. A louver 8 is installed inside the second ventilation opening 4. During operation, indoor exhaust air enters the conversion air box 2 through the ventilation pipe 1, and after pressure and flow equalization by the conversion air box 2, it is discharged through the louver 8. See details... Figure 1 .

[0025] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation opening structure for existing buildings, comprising a ventilation duct, characterized in that: It also includes a conversion air box installed indoors in an existing building. The conversion air box has an installation port on its first side wall, and the ventilation pipe is sealed and installed at the installation port. The conversion air box has a first ventilation opening on its second side wall, and the existing building has a second ventilation opening opposite to the first ventilation opening on its exterior wall. The second ventilation opening is equipped with louvers for ventilation and rain protection. The first side wall and the second side wall are arranged opposite each other. The first ventilation opening and the second ventilation opening are opened on the same axis and are both located below the exterior window or curtain wall of the existing building. The central axis of the first ventilation opening is lower than the central axis of the installation port, so that the first ventilation opening and the installation port are misaligned vertically.

2. The ventilation opening structure for existing buildings according to claim 1, characterized in that: The outward flange at the installation port of the ventilation duct is attached to the first side wall, and the gap between the installation port and the ventilation duct is filled with an insulation layer. The ventilation duct is fixed to the outer wall of the first side wall by angle steel.

3. The ventilation opening structure for existing buildings according to claim 2, characterized in that: The inner wall of the conversion air box is coated with a cement mortar protective layer with a thickness of 10 mm to 20 mm, and the cement mortar protective layer and the inner wall of the ventilation pipe are sealed with silicone.

4. The ventilation opening structure for existing buildings according to claim 1, characterized in that: The conversion air box is built on the exterior wall of the existing building, and the distance between its first side wall and the second side wall is ≥400 mm; the ventilation pipe is a galvanized steel pipe with a rectangular cross-section, and its ventilation cross-sectional area is ≤1 / 2 of the area of ​​the first side wall. The ratio of the cross-sectional length to the cross-sectional width of the ventilation pipe is ≤4:1.

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