CN-224215502-U - Ventilation hole structure for existing building

CN224215502UCN 224215502 UCN224215502 UCN 224215502UCN-224215502-U

Abstract

The utility model discloses a ventilation hole structure for an existing building, which comprises a ventilation pipe and a conversion bellows arranged indoors, wherein a mounting hole is formed in a first side wall of the conversion bellows, the ventilation pipe is mounted at the mounting hole in a sealing mode, a first ventilation opening is formed in a second side wall of the conversion bellows, a second ventilation opening is formed in an outer wall of the existing building, a shutter is arranged in the second ventilation opening, the first ventilation opening and the second ventilation opening are coaxially formed, and the first ventilation opening and the mounting hole are staggered up and down. The utility model installs the switching bellows on the indoor side of the outer wall of the existing building, which makes the ventilation pipe and the second ventilation opening of the existing building butt joint in a vertically staggered way, meets the ventilation requirement, does not change the outer elevation structure of the existing building, has stronger economy and easy operability, and furthermore, the switching bellows has the functions of equalizing flow and equalizing pressure, can reduce the resistance loss of the airflow flowing through the box body, and can realize energy conservation and emission reduction.

Inventors

WU MENG
CHEN QINGJUN
YAN ZHONGLIANG
LIU FANGZHOU
CHEN BINGXIN
TIAN HUI
ZHANG JU
WANG MINGLEI

Assignees

机械工业第六设计研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20250516

Claims (4)

1. A ventilation hole structure for an existing building comprises a ventilation pipe and is characterized by further comprising a conversion bellows arranged in an existing building, wherein a mounting hole is formed in a first side wall of the conversion bellows, the ventilation pipe is mounted at the mounting hole in a sealing mode, a first ventilation opening is formed in a second side wall of the conversion bellows, a second ventilation opening opposite to the first ventilation opening is formed in an outer wall of the existing building, a louver used for ventilation and rain prevention is arranged in the second ventilation opening, the first side wall and the second side wall are arranged oppositely, the first ventilation opening and the second ventilation opening are formed in a coaxial line and are located below an outer window or a curtain wall of the existing building, and the central axis of the first ventilation opening is lower than that of the mounting hole so that the first ventilation opening and the mounting hole are staggered up and down.
2. The ventilation hole structure for the existing building according to claim 1, wherein the outward flange at the installation port of the ventilation pipe is attached to the first side wall, an insulation layer is filled in a gap between the installation port and the ventilation pipe, and the ventilation pipe is fixedly connected with the outer wall of the first side wall through angle steel.
3. The ventilation hole structure for the existing building according to claim 2, wherein a cement mortar protection layer with the thickness of 10 mm-20 mm is smeared on the inner wall surface of the conversion bellows, and the cement mortar protection layer and the inner wall of the ventilation pipe are sealed through silica gel.
4. The ventilation hole structure for the existing building according to claim 1, wherein the conversion bellows is built on an outer wall of the existing building, the distance between the first side wall and the second side wall is not less than 400 mm, the ventilation pipe is a galvanized steel pipe with a rectangular cross section, the ventilation cross section is not more than 1/2 of the area of the first side wall, and the section length of the ventilation pipe is not more than 4:1.

Description

Ventilation hole structure for existing building Technical Field The utility model relates to the field of reconstruction of old buildings, in particular to a ventilation hole structure for an existing building. Background At present, public equipment of existing buildings in early construction ages cannot meet the demands of people on work and life. In order to meet the living or working demands, equipment with current standard is often required to be additionally arranged, and related transformation is required to be carried out on the existing building so as to meet the installation or working demands of newly-installed equipment. For example, ventilation equipment is installed in a building, and a ventilation hole is formed in the outer wall of the building. At present, the existing building reconstruction engineering is based on the requirements of national relevant policies, and compared with a newly built building, the method has the advantages of low investment, simple and convenient structure, low carbon, environmental protection and the like. Therefore, in the actual reconstruction engineering, the existing building indoor space always has a front part for catching the elbow, and the building style needs to be protected, so that a hole with enough surface width cannot be formed on the outer wall, and then the situation that the positions of the ventilation pipeline and the ventilation hole are correspondingly connected with each other occurs. In conclusion, the design of the ventilation hole structure which can ensure the appearance of the building and connect the ventilation pipeline with the outdoor is of great importance to the reconstruction of the existing old building. Disclosure of Invention In view of the above, the present utility model provides a ventilation hole structure for an existing building, which can connect an air duct and a ventilation opening through a conversion bellows built in the existing building, thereby ensuring ventilation effect. In order to achieve the above purpose, the utility model adopts the following technical scheme: The ventilation hole structure for the existing building comprises a ventilation pipe and a conversion bellows arranged in an existing building, wherein a mounting hole is formed in a first side wall of the conversion bellows, the ventilation pipe is mounted at the mounting hole in a sealing mode, a first ventilation hole is formed in a second side wall of the conversion bellows, a second ventilation hole opposite to the first ventilation hole is formed in an outer wall of the existing building, a shutter used for ventilation and rain prevention is arranged in the second ventilation hole, the first side wall and the second side wall are arranged oppositely, the first ventilation hole and the second ventilation hole are formed in a coaxial line and are located below an outer window or a curtain wall of the existing building, and the central axis of the first ventilation hole is lower than that of the mounting hole so that the first ventilation hole and the mounting hole are arranged in a staggered mode. The utility model has the beneficial effects that the switching bellows is arranged on the indoor side of the outer wall of the existing building, so that the ventilation pipe is in butt joint with the second ventilation opening of the existing building in an up-down staggered way, and the ventilation requirement of newly-installed equipment is further met. In addition, the utility model has the advantages of strong economy and easy operability without changing the outer elevation structure of the existing building on the basis of meeting ventilation. In addition, the conversion bellows has the functions of flow equalization and pressure equalization, can reduce resistance loss of airflow flowing through the box body, can realize energy conservation and emission reduction, and has energy conservation. Preferably, the flanging at the mounting port of the ventilation pipe is stuck on the first side wall, a heat insulation layer is filled in a gap between the mounting port and the ventilation pipe, and the ventilation pipe is fixedly connected with the outer wall of the first side wall through angle steel. When actually installing, angle steel is arranged along the circumferential direction of the installation opening for a circle, one flange plate of the angle steel is fixedly connected with the ventilation pipe through a rivet, and the other flange plate of the angle steel is fixedly connected with the outer wall of the first side wall through an expansion bolt, so that the installation is simple and convenient. In addition, the outward flange has a limiting function, and the outward flange and the angle steel are combined to realize the fixed installation of the ventilation pipe. More preferably, a cement mortar protection layer with the thickness of 10 mm-20 mm is smeared on the inner wall surface of the conversion bellows, and the cement mortar pro