Ventilation structure for a building

Abstract

The utility model discloses a house ventilation structure relates to the field of house ventilation, and its technical scheme main points are: including pipeline, the pipeline includes the first pipeline for communicating indoor and the second pipeline for the air outlet, and the first pipeline and the second are perpendicular to each other, and the length of second pipeline is greater than the length of first pipeline, and the second pipeline is installed with the exhaust fan away from the first pipeline one end, and installs the sound absorption subassembly in the first pipeline. The utility model discloses be provided with the first pipeline for communicating indoor and the second pipeline for the air outlet, and the noise needs the reflection of big angle and refraction, and only then can enter the second pipeline, make the noise energy that enters the second pipeline greatly reduces, reduced the noise energy that can enter the ventilation opening, also reduced the noise that enters indoor, installs the sound absorption subassembly in the first pipeline, and the sound absorption subassembly can further absorb sound wave energy, thereby make the noise that transmits to indoor smaller.

Description

Technical Field

[0001] This utility model relates to the field of building ventilation, and more specifically, to building ventilation structures. Background Technology

[0002] A building's ventilation system refers to the ventilation devices inside a building, used to maintain the circulation and freshness of indoor air.

[0003] Existing building ventilation structures often have a vent in the wall and an outdoor ventilation duct connected to the vent. The duct contains a fan to increase airflow, and the fan is positioned directly opposite the vent. Therefore, the noise generated by the fan often enters the room directly through the vent, causing excessive indoor noise.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a house ventilation structure that reduces indoor noise.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: the house ventilation structure includes a pipe, the pipe includes a first pipe for connecting to the room and a second pipe for exhausting air, the first pipe and the second pipe are perpendicular to each other, the length of the second pipe is greater than the length of the first pipe, an exhaust fan is installed at the end of the second pipe away from the first pipe, and a sound-absorbing component is installed inside the first pipe.

[0007] The present invention is further configured such that: the sound-absorbing component includes a first sound-absorbing block and a second sound-absorbing block, and both the first sound-absorbing block and the second sound-absorbing block are provided with a plurality of flat air ducts, the air ducts being parallel to the inner wall of the first pipe.

[0008] The present invention is further configured such that: the first sound-absorbing block and the second sound-absorbing block have the same size, the width of the first sound-absorbing block and the second sound-absorbing block is equal to the width of the inner wall of the first pipe, and the height of the first sound-absorbing block and the second sound-absorbing block is greater than 1 / 2 of the height of the inner wall of the first pipe.

[0009] The present invention is further configured such that: the bottom surface of the first sound-absorbing block is in contact with the inner bottom wall of the first pipe, the top surface of the second sound-absorbing block is in contact with the inner top wall of the first pipe, and the distance between the first sound-absorbing block and the second sound-absorbing block is 3-5 cm.

[0010] The present invention is further configured such that: a plurality of shock-absorbing blocks are fixedly connected to the side of the second pipe that is in contact with the wall.

[0011] The present invention is further configured such that: a maintenance port is provided on the top surface of the second pipe, and a cover plate for covering the maintenance port is detachably connected to the top surface of the second pipe, wherein the area of ​​the cover plate is larger than the area of ​​the maintenance port.

[0012] The present invention is further configured such that: both the first pipe and the second pipe are made of 201 stainless steel, and both the outer and inner surfaces of the first pipe and the second pipe are plated with zinc.

[0013] In summary, this utility model has the following beneficial effects:

[0014] This invention features a first duct for connecting to the interior and a second duct for exhausting air. The first and second ducts are perpendicular to each other, and the second duct is longer than the first duct. An exhaust fan is installed at the end of the second duct furthest from the first duct. The noise generated by the exhaust fan is transmitted within the second duct. The noise needs to be reflected and refracted at a large angle to enter the second duct, which significantly reduces the noise energy entering the second duct. This reduces the noise energy that can enter the ventilation opening, thus reducing the noise entering the room. A sound-absorbing component is installed inside the first duct, which can further absorb sound wave energy, thereby reducing the noise transmitted into the room. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this utility model;

[0016] Figure 2 is a side view of this utility model.

[0017] In the diagram: 1. First pipe; 2. Second pipe; 3. First sound-absorbing block; 4. Second sound-absorbing block; 5. Vibration damping block; 6. Baffle plate. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Example: A building ventilation structure, as shown in Figures 1 and 2, includes pipes. The pipes include a first pipe 1 for connecting to the interior and a second pipe 2 for exhausting air. The first and second pipes are perpendicular to each other. During installation, ventilation openings need to be made on the wall. The length of the second pipe 2 is greater than the length of the first pipe 1. An exhaust fan is installed at the end of the second pipe 2 away from the first pipe 1. The exhaust fan is an axial flow fan. The airflow direction generated by the axial flow fan is perpendicular to the direction of the fan blades. Most of the noise generated by the fan will also propagate in the direction of the airflow. The noise generated by the exhaust fan will be transmitted in the second pipe 2. The noise needs to be reflected and refracted at a large angle to enter the second pipe 2, which greatly reduces the noise energy entering the second pipe 2. This reduces the noise energy that can enter the ventilation opening, thus reducing the noise entering the room. A sound-absorbing component is installed in the first pipe 1, which can further absorb sound wave energy, thereby reducing the noise transmitted to the room.

[0020] As shown in Figure 1, the sound-absorbing component includes a first sound-absorbing block 3 and a second sound-absorbing block 4. Several flat air ducts are provided on both the first sound-absorbing block 3 and the second sound-absorbing block 4. The air ducts are parallel to the inner wall of the first pipe 1. The air ducts on the first sound-absorbing block 3 and the second sound-absorbing block 4 can cause sound waves to be reflected multiple times. In each reflection, a large amount of sound wave energy will be lost. The inner wall of the air duct will absorb the sound wave energy in each reflection, thereby making the noise of the ventilation structure lower.

[0021] As shown in Figure 1, the first sound-absorbing block 3 and the second sound-absorbing block 4 are the same size. The width of the first sound-absorbing block 3 and the second sound-absorbing block 4 is equal to the width of the inner wall of the first pipe 1. The height of the first sound-absorbing block 3 and the second sound-absorbing block 4 is greater than 1 / 2 of the height of the inner wall of the first pipe 1. The bottom surface of the first sound-absorbing block 3 is in contact with the inner bottom wall of the first pipe 1, and the top surface of the second sound-absorbing block 4 is in contact with the inner top wall of the first pipe 1. The distance between the first sound-absorbing block 3 and the second sound-absorbing block 4 is 3-5 cm. The projection of the first sound-absorbing block 3 and the second sound-absorbing block 4 along the length of the first pipe 1 will completely cover the air duct. During the transmission of sound waves, they will inevitably come into contact with one of the first sound-absorbing block 3 or the second sound-absorbing block 4. The single first sound-absorbing block 3 or the single second sound-absorbing block 4 does not completely occupy the first pipe 1, which can also reduce the resistance of airflow, thereby balancing ventilation and noise reduction.

[0022] As shown in Figure 1, several damping blocks 5 are fixedly connected to the side of the second pipe 2 that is in contact with the wall. The damping blocks 5 are made of elastic rubber, which can effectively absorb and disperse the vibration energy generated by the exhaust fan, thus preventing the vibration from being transmitted to the wall through the solid medium and generating indoor noise.

[0023] As shown in Figure 1, a maintenance opening is provided on the top surface of the second pipe 2. A cover plate 6 for covering the maintenance opening is detachably connected to the top surface of the second pipe 2. The cover plate 6 is fixed to the top surface of the second pipe 2 with screws. The area of ​​the cover plate 6 is larger than the area of ​​the maintenance opening. The maintenance opening can directly open the interior of the second pipe 2, allowing maintenance personnel to enter the second pipe 2 to inspect and repair the exhaust fan, making the structure easier to maintain. The cover plate 6 is larger than the maintenance opening, preventing rainwater from falling into the maintenance opening from the edge of the cover plate 6, thus improving waterproofing.

[0024] Both the first pipe 1 and the second pipe 2 are made of 201 stainless steel. The outer and inner surfaces of the first pipe 1 and the second pipe 2 are plated with zinc. 201 stainless steel has good corrosion resistance and is not easily corroded when exposed to outdoor environments for a long time. Zinc has strong reducing properties, which can protect the first pipe 1 and the second pipe 2 from corrosion, making the corrosion resistance of this structure better.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A building ventilation structure, characterized by: The system includes a pipe, which includes a first pipe (1) for connecting to the interior and a second pipe (2) for exhausting air. The first pipe (1) and the second pipe are perpendicular to each other. The length of the second pipe (2) is greater than the length of the first pipe (1). An exhaust fan is installed at the end of the second pipe (2) away from the first pipe (1). A sound-absorbing component is installed inside the first pipe (1).

2. The building ventilation structure according to claim 1, characterized in that: The sound-absorbing component includes a first sound-absorbing block (3) and a second sound-absorbing block (4). The first sound-absorbing block (3) and the second sound-absorbing block (4) are provided with several flat air ducts, which are parallel to the inner wall of the first pipe (1).

3. The building ventilation structure according to claim 2, characterized in that: The first sound-absorbing block (3) and the second sound-absorbing block (4) have the same size. The width of the first sound-absorbing block (3) and the second sound-absorbing block (4) is equal to the width of the inner wall of the first pipe (1). The height of the first sound-absorbing block (3) and the second sound-absorbing block (4) is greater than 1 / 2 of the height of the inner wall of the first pipe (1).

4. The building ventilation structure according to claim 3, characterized in that: The bottom surface of the first sound-absorbing block (3) is in contact with the inner bottom wall of the first pipe (1), and the top surface of the second sound-absorbing block (4) is in contact with the inner top wall of the first pipe (1). The distance between the first sound-absorbing block (3) and the second sound-absorbing block (4) is 3-5 cm.

5. The building ventilation structure according to claim 1, characterized in that: The second pipe (2) has several shock-absorbing blocks (5) fixedly connected to the side that contacts the wall.

6. The building ventilation structure according to claim 1, characterized in that: A maintenance port is provided on the top surface of the second pipe (2), and a cover plate (6) for covering the maintenance port is detachably connected to the top surface of the second pipe (2). The area of ​​the cover plate (6) is larger than the area of ​​the maintenance port.

7. The building ventilation structure according to claim 1, characterized in that: The first pipe (1) and the second pipe (2) are both made of 201 stainless steel, and the outer and inner surfaces of the first pipe (1) and the second pipe (2) are plated with zinc.

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