Building ventilating duct

Abstract

The utility model discloses a building ventilation pipeline, and particularly relates to the technical field of building ventilation, the building ventilation pipeline comprises a first conveying pipe, the end part of the first conveying pipe is connected with an exhaust pipe, the bottom of the exhaust pipe is provided with an exhaust port, the exhaust port is internally provided with a piece of blocking cloth, and the two ends of the blocking cloth are connected with reels; a motor is fixed to the outer wall of the exhaust pipe, an output shaft of the motor is connected with the end of the reel, the suspension structure comprises a supporting rod, suspension rods are fixed to the two ends of the supporting rod, the top ends of the suspension rods are connected with a fixing plate, a screw hole is formed in the top of the fixing plate, and the top of the screw hole is connected with the motor. The guide plate is arranged in the bent pipe and changes the radian of the inner wall of the bent pipe, so that when air passes through the bent pipe, the radian of air flow passing through the guide plate is smaller, circulation is smoother, the overall energy consumption of a ventilation system is saved, and the cost of the building ventilation system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building ventilation technology, specifically to a building ventilation duct. Background Technology

[0002] In modern architectural design, ventilation systems are an important component for ensuring indoor air quality and improving the comfort of living and working environments. In office buildings or subway buildings, central ventilation systems are usually used. These systems draw air from the outside through air supply devices, deliver it to the office building or subway building through ventilation ducts, and then deliver it to the outside through exhaust ducts to achieve the purpose of ventilating the office building or subway building.

[0003] Existing central ventilation systems primarily draw in outdoor air using fans. The ventilation ducts that transport the air are generally made of steel plates, with each section connected by flanges and the gaps sealed with gaskets. The duct ports are typically square. When installing ventilation ducts within a building, downward openings are created in the joined sections to allow air to be discharged downwards into the space containing the duct. However, existing duct exhaust outlets have shortcomings in the exhaust process. When supplying cool air to the indoor space, the size of the exhaust outlet in the exhaust duct needs to be adjusted mechanically to change its size. Adjusting the exhaust outlet size solely by modifying the mechanical structure of the exhaust duct is cumbersome and inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a building ventilation duct to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A building ventilation duct includes a first delivery pipe, an exhaust pipe connected to one end of the first delivery pipe, an exhaust port at the bottom of the exhaust pipe, a baffle cloth inside the exhaust port, rollers connected to both ends of the baffle cloth, and a downward-facing ventilation opening at the top of the baffle cloth corresponding to the exhaust port. A motor is fixed to the outer wall of the exhaust pipe, and the output shaft of the motor is connected to the end of the rollers.

[0007] Preferably, the first conveying pipe is connected to a bend at one end, the bend is connected to a second conveying pipe at its extended end, a guide plate is provided inside the bend, and a suspension structure is provided outside both the first and second conveying pipes.

[0008] Preferably, a support block is fixed to one side of the guide plate, and the support block is bonded to the inner wall of the bend with adhesive.

[0009] Preferably, the suspension structure includes a support rod, with hanging rods fixed at both ends of the support rod, a fixing plate connected to the top of the hanging rod, and a screw hole provided on the top of the fixing plate.

[0010] Preferably, flanges are provided at both ends of the first conveying pipe, the bend, and the second conveying pipe, and a sealing ring is provided between the first conveying pipe and the flange.

[0011] Preferably, the first conveying pipe is further provided with a filtering device, the filtering device including a mounting box, one end of the mounting box having an insertion hole, and through holes on both the front and rear surfaces of the mounting box, into which a filtering component is inserted.

[0012] Preferably, the filter assembly includes a mounting frame, a filter screen is fixed to the inner wall of the mounting frame, a sealing cap is fixed to the end of the mounting frame, and the mounting frame enters the interior of the mounting box after passing through the insertion hole.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] By installing a movable baffle above the exhaust vent of the exhaust duct, with a ventilation opening at the top of the baffle corresponding to the exhaust vent, the overlapping area of ​​the ventilation opening and the exhaust vent can be dynamically adjusted by moving the baffle. This facilitates quick adjustment of the size of the ventilation opening, thereby changing the amount of cold air entering the space. The structure of the ventilation opening is simple, and the method of adjusting the size of the ventilation opening is convenient, quick, and highly applicable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the exhaust pipe of this utility model;

[0018] Figure 3 This is an exploded view of the exhaust pipe and baffle of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the filtration device of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the bend in this utility model;

[0021] Figure 6This is a schematic diagram of the suspension structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. First delivery pipe; 2. Filter device; 21. Sealing cover; 22. Mounting frame; 23. Filter screen; 24. Insertion hole; 25. Mounting box; 26. Through hole; 3. Bend; 31. Guide plate; 32. Support block; 33. Air passage; 4. Second delivery pipe; 5. Flange; 51. Sealing ring; 6. Suspension structure; 61. Fixing plate; 62. Support rod; 63. Hanging rod; 7. Exhaust pipe; 71. Motor; 72. Roller; 73. Baffle; 74. Ventilation opening; 75. Exhaust outlet. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1 - Figure 3 The illustrated building ventilation duct includes a first delivery pipe 1, with an exhaust pipe 7 connected to one end. An exhaust port 75 is located at the bottom of the exhaust pipe 7, and a baffle 73 is installed inside the exhaust port 75. Both ends of the baffle 73 are connected to rollers 72, and a downward-facing ventilation opening 74 corresponding to the exhaust port 75 is located at the top of the baffle 73. A motor 71 is fixed to the outer wall of the exhaust pipe 7, and the output shaft of the motor 71 is connected to the end of the rollers 72. Specifically, during the air delivery process, air passes through the exhaust pipe 7 and then to the first delivery pipe 1. During this process, some air is discharged from the exhaust port 75 and directly discharged into the building. In the space where the exhaust duct 7 is located, during the process of transporting cold air, the size of the exhaust vent 75 depends on the amount of cold air entering the space. To reduce the amount of cold air entering the space, the motor 71 is started, and the motor 71 drives the roller 72 to rotate. The roller 72 winds the baffle 73, and the ventilation opening 74 of the baffle 73 intersects with the exhaust vent 75. At this time, the baffle 73 blocks part of the exhaust vent 75, thereby reducing the area of ​​the exhaust vent 75. This can prevent some cold air from being discharged downward through the exhaust vent 75, thereby reducing the amount of cold air discharged into the space. The blocked cold air continues to be transported backward along the exhaust duct 7 and the first conveying pipe 1.

[0026] like Figure 1 and Figure 5 As shown, the end of the first conveying pipe 1 is connected to a bend 3, the extended end of the bend 3 is connected to a second conveying pipe 4, a guide plate 31 is provided inside the bend 3, and a suspension structure 6 is provided outside both the first conveying pipe 1 and the second conveying pipe 4.

[0027] A support block 32 is fixed to one side of the guide plate 31. The support block 32 is bonded to the inner wall of the bend 3 with adhesive. Air passes through the first delivery pipe 1 and then enters the bend 3. The air quickly passes over the surface of the guide plate 31 and then enters the second delivery pipe 4. Compared with the traditional 90-degree bend structure, the air has less resistance, faster speed, and less kinetic energy consumption when passing through the bend 3 of this application. This is conducive to the air being transported further in the ventilation duct. By setting the guide plate inside the bend, the guide plate changes the curvature of the inner wall of the bend, so that the airflow is less curved and flows more smoothly when passing through the bend. The guide plate reduces air turbulence and reduces the resistance of the inner wall of the bend to the air, thereby reducing the energy consumption of the fan caused by the resistance, saving the overall energy consumption of the ventilation system, and reducing the cost of the building ventilation system.

[0028] like Figure 1 and Figure 6 As shown, the suspension structure 6 includes a support rod 62, with hangers 63 fixed at both ends of the support rod 62. A fixing plate 61 is connected to the top of the hangers 63, and a screw hole is provided on the top of the fixing plate 61. In the operation of installing the ventilation duct structure of this application in a building, the support rod 62 is placed at the bottom of the first conveying pipe 1, and then the fixing plate 61 is fixed to the ceiling wall of the building with expansion bolts. The hangers 63 pull the support rod 62 and the first conveying pipe 1 upward to maintain the stability of the first conveying pipe 1. Similarly, the second conveying pipe 4 is also hoisted according to the same principle.

[0029] like Figure 1 , Figure 4 , Figure 5 As shown, flanges 5 are provided at both ends of the first conveying pipe 1, the bend 3, and the second conveying pipe 4. A sealing ring 51 is provided between the first conveying pipe 1 and the flange 5. It is worth noting that the first conveying pipe 1 consists of multiple identical square pipes, and each square pipe is connected to the other by the flange 5. Similarly, the second conveying pipe 4 also consists of multiple identical square pipes. The first conveying pipe 1 and the second conveying pipe 4 are connected by the bend 3. Air passes through the first conveying pipe 1, then through the bend 3, and reaches the second conveying pipe 4. Other pipes can be connected to the end of the second conveying pipe 4, so that air can be delivered to other spaces.

[0030] like Figure 4As shown, the first conveying pipe 1 is also equipped with a filter device 2. The filter device 2 includes a mounting box 25. One end of the mounting box 25 is provided with an insertion hole 24. Both the front and rear surfaces of the mounting box 25 are provided with through holes 26. A filter assembly is inserted into the insertion hole 24. The filter assembly includes a mounting frame 22. A filter screen 23 is fixed to the inner wall of the mounting frame 22. A sealing cap 21 is fixed to the end of the mounting frame 22. The mounting frame 22 passes through the insertion hole 24 and enters the interior of the mounting box 25. Air enters the first conveying pipe 1, and then enters the mounting box 25 through the through hole 26. Under the action of air pressure, the air passes through the filter screen 23. The filter screen 23 filters the air, and the impurities in the air are filtered out. Then, the air continues to flow into the conveying pipe behind.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A building ventilation duct, comprising a first delivery pipe (1), characterized in that: The first conveying pipe (1) is connected to an exhaust pipe (7) at its end. An exhaust port (75) is provided at the bottom of the exhaust pipe (7). A baffle (73) is provided inside the exhaust port (75). A roller (72) is connected to both ends of the baffle (73). A ventilation opening (74) corresponding to the exhaust port (75) is provided on the top of the baffle (73). A motor (71) is fixed to the outer wall of the exhaust pipe (7). The output shaft of the motor (71) is connected to the end of the roller (72).

2. A building ventilation duct according to claim 1, characterized in that: The first conveying pipe (1) is connected to a bend (3) at its end, and the bend (3) is connected to a second conveying pipe (4) at its extended end. A guide plate (31) is provided inside the bend (3), and a suspension structure (6) is provided outside both the first conveying pipe (1) and the second conveying pipe (4).

3. A building ventilation duct according to claim 2, characterized in that: A support block (32) is fixed on one side of the guide plate (31), and the support block (32) is bonded to the inner wall of the bend (3) with glue.

4. A building ventilation duct according to claim 2, characterized in that: The suspension structure (6) includes a support rod (62), with a hanging rod (63) fixed at both ends of the support rod (62). A fixing plate (61) is connected to the top of the hanging rod (63), and a screw hole is provided on the top of the fixing plate (61).

5. A building ventilation duct according to claim 2, characterized in that: Flanges (5) are provided at both ends of the first conveying pipe (1), the bend (3) and the second conveying pipe (4), and a sealing ring (51) is provided between the first conveying pipe (1) and the flange (5).

6. A building ventilation duct according to claim 1, characterized in that: The first conveying pipe (1) is also provided with a filter device (2), the filter device (2) includes a mounting box (25), one end of the mounting box (25) is provided with a socket (24), and the front and rear surfaces of the mounting box (25) are provided with through holes (26), and a filter component is inserted into the socket (24).

7. A building ventilation duct according to claim 6, characterized in that: The filter assembly includes a mounting frame (22), a filter screen (23) is fixed to the inner wall of the mounting frame (22), a sealing cap (21) is fixed to the end of the mounting frame (22), and the mounting frame (22) enters the interior of the mounting box (25) after passing through the insertion hole (24).

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