A building exterior wall ventilation device

Abstract

This application discloses a building exterior wall ventilation device, relating to the technical field of indoor ventilation. It includes a fixed frame; a baffle rotatably connected to the outside of the fixed frame; an exhaust assembly including a movable frame and an exhaust fan rotatably connected to the movable frame, a sliding seat fixedly connected to the outer periphery of the movable frame, the sliding seat being disposed within a sliding groove, and a connecting seat connected to the side of the movable frame near the baffle; a connecting rod, one end of which is rotatably connected to the connecting seat, and the other end of which is rotatably connected to the movable seat; a drive unit including a drive motor fixedly connected inside the fixed frame and a drive rod passing through and threadedly connected to the sliding seat, one end of which passes through the fixed frame; a filter assembly including a first frame detachably connected to one side of the movable frame and a filter screen fixedly connected to the inside of the first frame; and a heat insulation assembly detachably connected to one side of the first frame. This application has the effect of switching between heat insulation and rain protection and ventilation, and is easy to maintain.

Description

Technical Field

[0001] This application relates to the technical field of indoor ventilation, and in particular to a ventilation device for building exterior walls. Background Technology

[0002] In modern urban buildings, how to effectively ventilate and regulate indoor temperature is a challenge. Traditional building exterior walls are usually designed to be relatively closed. While this ensures sound insulation and heat preservation, it also restricts indoor air circulation, leading to indoor air pollution and difficulties in temperature and humidity control.

[0003] To address the aforementioned issues, Chinese Patent No. CN212538162U discloses a building exterior wall heat insulation and ventilation device, comprising a building wall, a ventilation opening provided through the side wall of the building wall, an installation frame provided inside the ventilation opening, the installation frame being fixedly connected to the ventilation opening by multiple fastening bolts, a ventilation mechanism being provided inside the installation frame, and a heat insulation plate being fixedly connected inside the ventilation opening.

[0004] The aforementioned ventilation system can expel indoor air to the outside, accelerating airflow and maintaining good ventilation. Furthermore, the insulation panel provides insulation, preventing external heat from entering the room. However, it still has the following shortcomings: because the vents are always open, the inclined rain shield alone cannot completely block rainwater, allowing it to easily enter the room; after prolonged use, the filter becomes clogged and difficult to replace; and the insulation panel limits the actual air outlet area, resulting in poor ventilation. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a building exterior wall ventilation device.

[0006] The technical solution for a building exterior wall ventilation device provided in this application is as follows: A building exterior wall ventilation device, comprising, A fixed frame, wherein a sliding groove is provided on the inner wall of the fixed frame; A baffle is rotatably connected to the outside of a fixed frame, and a rotating seat is fixedly connected to the inner wall of the baffle. An exhaust assembly includes a movable frame and an exhaust fan rotatably connected within the movable frame. A sliding seat is fixedly connected to the outer periphery of the movable frame, and the sliding seat is disposed within a sliding groove. A connecting seat is connected to the side of the movable frame near the baffle. A connecting rod, one end of which is rotatably connected to a connecting seat, and the other end of which is rotatably connected to a rotating seat; A drive unit is disposed inside a fixed frame. The drive unit includes a drive motor fixedly connected inside the fixed frame and a drive rod that passes through and is threadedly connected to a sliding seat. One end of the drive rod passes through the fixed frame. A filter assembly, comprising a first frame detachably connected to one side of a movable frame and a filter screen fixedly connected inside the first frame; A heat insulation component, which is detachably connected to one side of the first frame.

[0007] By adopting the above technical solution, the baffle can effectively block external rainwater from entering the building through the exhaust fan, preventing internal flooding. During ventilation, the drive rod pushes the exhaust fan forward, lifting the baffle via the connecting rod, thus enabling ventilation. After ventilation is complete, the drive rod moves the exhaust fan backward, and the connecting rod pulls the baffle to close. In windy weather, the connecting rod, in conjunction with the fixing frame, effectively prevents the baffle from being blown up, preventing rainwater from entering. The detachable connection between multiple components facilitates the replacement of filter components. When the exhaust fan reverses to intake air, different filters can be selected according to different seasons and weather conditions, thereby effectively improving the air intake effect.

[0008] Optionally, the heat insulation component includes a second frame, a worm gear passing through and rotatably connected to the second frame, several heat insulation plates disposed on the inner wall of the second frame, and rotating shafts fixedly connected to both sides of the heat insulation plates. The second frame has a drive cavity for placing the rotating shafts. The rotating shafts pass through and rotatably connected to the inner wall of the drive cavity. The rotating shafts are fixedly connected to a worm wheel that meshes with the worm gear. A linkage component is connected to one side of each of the rotating shafts. The worm gear and the drive rod are detachably connected.

[0009] By adopting the above technical solution, the worm gear rotates along with the drive rod, thereby driving the worm wheel to rotate. This allows the exhaust fan to move while simultaneously opening and closing the heat insulation plate. Because the drive rod and worm gear are detachably connected, the entire heat insulation assembly can be removed for maintenance without disassembling the entire fan.

[0010] Optionally, the end of the drive rod is a plug-in part, the plug-in part has a plug-in groove, and the worm gear is fixedly connected to a plug post for inserting into the plug-in groove at one end.

[0011] By adopting the above technical solution, the drive rod and worm gear can be quickly installed and disassembled. During the transmission process, the force is evenly transmitted to the entire connection structure through the plug and slot, avoiding stress concentration and thus effectively reducing the fatigue strength of the connection parts and improving the fatigue resistance of the entire transmission structure.

[0012] Optionally, the outer periphery of the plug is fixedly connected with a plurality of engaging teeth, and the outer wall of the plurality of engaging teeth abuts against the inner wall of the plug groove.

[0013] By adopting the above technical solution, the engaging teeth make the connection between the worm and the drive rod more secure. The engaging teeth effectively increase the contact area and friction between the worm and the drive rod, thereby improving the strength and stability of the connection. At the same time, due to the tight fit between the engaging teeth and the inner wall of the insertion groove, the gaps and slippage during the transmission process are reduced, the transmission error is reduced, and the transmission accuracy is effectively improved.

[0014] Optionally, the first frame has a connection hole for inserting one end of the drive rod and the worm gear.

[0015] By adopting the above technical solution, the connection surface between the worm and the drive rod is surrounded by the first frame, thereby reducing the interference of external factors such as dust on the transmission structure, effectively extending the service life of the entire transmission structure and improving the reliability of the device.

[0016] Optionally, the end of the worm gear away from the drive rod is the operating end, which is inserted through the second frame and has an operating slot for manual operation.

[0017] By adopting the above technical solution, when the drive motor fails, tools such as an Allen wrench can be inserted into the operating slot and rotated to make the worm gear rotate, thereby driving the screw to rotate, thus opening the baffle and heat insulation plate, ensuring that the equipment can still be controlled and used under abnormal conditions.

[0018] Optionally, the linkage assembly includes several rocker arms fixedly connected to the rotation shaft and linkage rods movably connected to the rocker arms.

[0019] By adopting the above technical solution, when the worm drives the worm wheel to rotate, the rotating shaft closest to the worm rotates, causing the rocker arm to rotate. The linkage rod is driven by the uppermost drive rod and moves, thereby causing the rocker arm and rotating rod below to rotate, realizing the synchronous opening and closing of the heat insulation plate.

[0020] Optionally, a positioning rod is fixedly connected to the side of the fixed frame away from the baffle. Both the first frame and the second frame are provided with positioning holes for the positioning rod to pass through. A nut is threadedly connected to the end of the positioning rod, and the nut abuts against the second frame.

[0021] By adopting the above technical solution, during assembly, the positioning rod passes through the positioning hole, allowing the heat insulation component and the filter component to be pre-positioned. This ensures the accurate relative positions of the heat insulation component, the filter component, and the fixed frame, further guaranteeing smooth insertion and coupling of the drive rod and worm gear. The nut ensures that the heat insulation component and the filter component are not easily dislodged, achieving effective fastening. Disassembly only requires rotating the nut to remove the filter component and the heat insulation component, facilitating maintenance.

[0022] Optionally, a guide block is fixedly connected to the outer wall of the movable frame, and a plurality of guide grooves are provided on the inner wall of the fixed frame for the guide block to be placed in. A guide rod passing through the guide block is fixedly connected to each of the plurality of guide grooves.

[0023] By adopting the above technical solution, the guide rod can play a positioning and guiding role, thereby preventing the fixed frame from jamming, tilting, shaking or other unexpected movements during the movement, ensuring the accuracy of the movement, improving the movement efficiency, and ensuring that the exhaust assembly can only move in a straight line along the guide rod during the movement process. At the same time, the guide rod can withstand the vibration and radial force generated by the exhaust fan when it is working, preventing the moving frame from directly rubbing against the inner wall of the fixed frame and improving its service life.

[0024] Optionally, a photovoltaic panel is fixedly connected to the outer wall of the baffle.

[0025] By adopting the above technical solution, the photovoltaic panels on the outer wall of the baffle can power the drive motor, achieving power self-sufficiency.

[0026] In summary, this application has the following beneficial effects: 1. By connecting the screw and worm gear, a single drive motor can simultaneously move the exhaust fan and rotate the heat insulation plate to open and close. While providing ventilation, it can actively control the heat exchange efficiency, resulting in good energy-saving effects.

[0027] 2. The filter components and heat insulation components are detachably connected to the fixed frame, realizing a modular design that facilitates subsequent maintenance and upgrades, effectively improving the convenience of use. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the building exterior wall ventilation device according to an embodiment of this application; Figure 2 This is an exploded view of the building exterior wall ventilation device according to an embodiment of this application; Figure 3 This is a structural schematic diagram of the building exterior wall ventilation device without the fixing frame and the second frame, according to an embodiment of this application. Figure 4 This is a cross-sectional view of the building exterior wall ventilation device according to an embodiment of this application; Figure 5This is a schematic diagram of the worm gear and drive rod according to an embodiment of this application; Explanation of reference numerals in the attached drawings: 1. Fixed frame; 11. Slide groove; 12. Positioning rod; 13. Nut; 14. Guide groove; 141. Guide rod; 2. Baffle; 21. Rotating seat; 22. Photovoltaic panel; 3. Exhaust assembly; 31. Moving frame; 311. Sliding seat; 312. Connecting seat; 313. Guide block; 32. Exhaust fan; 4. Connecting rod; 5. Drive unit; 51. Drive motor; 52. Drive rod; 521. Insertion part; 522. Insertion slot; 6. Filter assembly; 61. First frame; 611. Connection hole; 62. Filter screen; 7. Heat insulation assembly; 71. Second frame; 711. Drive cavity; 72. Worm gear; 721. Insertion post; 722. Engaging teeth; 723. Operating end; 724. Operating slot; 73. Heat insulation plate; 74. Rotating shaft; 75. Worm gear; 76. Linkage assembly; 761. Rocker arm; 762. Linkage rod; 8. Positioning hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a building exterior wall ventilation device. (Refer to...) Figure 1 , Figure 2 The building exterior wall ventilation device includes a fixed frame 1 and an exhaust assembly 3 disposed inside the fixed frame 1. The exhaust assembly 3 includes a movable frame 31 slidably connected to the fixed frame 1 and an exhaust fan 32 rotatably connected to the movable frame 31. The fixed frame 1 is used for fixed connection with the wall. When exhaust is needed, the exhaust fan 32 rotates to exhaust indoor air; when air intake is needed, the exhaust fan 32 can reverse to draw outside air into the room. By installing multiple ventilation devices, an air duct is formed inside, thereby improving the ventilation effect.

[0031] Reference Figure 2 , Figure 3 and Figure 4 A sliding seat 311 is fixedly connected to the outer wall of the movable frame 31. A sliding groove 11 for sliding connection of the sliding seat 311 is opened on the inner wall of the fixed frame 1. A drive unit 5 is provided inside the fixed frame 1. The drive unit 5 includes a drive motor 51 fixedly connected inside the fixed frame 1 and a drive rod 52 that passes through and is threaded to the sliding seat 311. A baffle 2 is rotatably connected to the outer wall of the fixed frame 1. A rotating seat 21 is fixedly connected to the inner wall of the baffle 2. A connecting seat 312 is fixedly connected to the side of the movable frame 31 near the baffle 2. A connecting rod 4 is provided between the connecting seat 312 and the rotating seat 21. One end of the connecting rod 4 is rotatably connected to the rotating seat 21, and the other end is rotatably connected to the connecting seat 312. When the baffle 2 is closed, the connecting rod 4 is parallel to the inner bottom wall of the fixed frame 1.

[0032] When the drive motor 51 is running, it drives the drive rod 52 to rotate, causing the sliding seat 311 to displace along the length of the drive rod 52, which in turn moves the moving frame 31. When the moving frame 31 moves forward, the connecting rod 4 can push forward to open the baffle 2, thus facilitating ventilation. After ventilation is completed, the moving frame 31 retracts, and at this time, the connecting rod 4 can pull the baffle 2 to close it. In windy weather, due to the influence of the connecting rod 4 and the drive rod 52, the baffle 2 will not be blown away by the wind, thus ensuring that the baffle 2 can also provide rain protection in severe weather.

[0033] Reference Figure 2 , Figure 3 and Figure 4 A filter assembly 6 is detachably connected to the side of the fixed frame 1 away from the baffle 2. The filter assembly 6 includes a first frame 61 detachably connected to the fixed frame 1 and a filter screen 62 fixedly connected to the inner wall of the fixed frame 1. A heat insulation assembly 7 is detachably connected to the side of the first frame 61 away from the fixed frame 1. The heat insulation assembly 7 includes a second frame 71 detachably connected to the first frame 61, a worm gear 72 passing through and rotatably connected to the second frame 71, several heat insulation plates 73 disposed on the inner wall of the second frame 71, and rotating shafts 74 fixedly connected to both sides of the heat insulation plates 73. The worm gear 72 is detachably connected to the drive rod 52. A drive cavity 711 is opened inside the second frame 71. The rotating shafts 74 pass through the side wall of the drive cavity 711 and are rotatably connected to the inner wall of the drive cavity 711. The rotating shaft 74 closest to the worm gear 72 is fixedly connected to a worm wheel 75 that meshes with the worm gear 72. A linkage assembly 76 for driving the several rotating shafts 74 to rotate synchronously is connected to one side of the several rotating shafts 74.

[0034] When the drive rod 52 rotates, it drives the worm gear 72 to rotate synchronously. The worm wheel 75 below the worm gear 72 engages, thereby driving the rotating shaft 74 to rotate. Affected by the linkage component 76, multiple rotating shafts 74 rotate synchronously, allowing the heat insulation plate 73 to open synchronously. At this time, the heat insulation plate 73 opens simultaneously with the baffle 2, achieving a better ventilation effect. When the baffle 2 closes, the heat insulation plate 73 closes synchronously, thereby preventing indoor heat loss and achieving a better heat preservation effect.

[0035] Reference Figure 2 , Figure 3 and Figure 4The linkage assembly 76 includes several rocker arms 761 fixedly connected to the rotating shafts 74 and a linkage rod 762 rotatably connected to the rotating shafts 74. When the worm gear 72 drives the worm wheel 75 to rotate, the rotating shaft 74 closest to the worm gear 72 rotates, thereby causing the rocker arms 761 to rotate. Affected by the linkage rod 762, the multiple rotating shafts 74 rotate synchronously. To prevent interference between the linkage rod 762 and the rotating shafts 74, the rocker arms 761 are L-shaped. One end of the L-shaped rocker arm 761 is fixedly connected to the rotating shaft 74, and the other end is rotatably connected to the linkage rod 762, thereby ensuring the smooth synchronous rotation of the multiple heat insulation plates 73 and preventing jamming during the movement.

[0036] Reference Figure 2 , Figure 5 One end of the drive rod 52 passes through the fixed frame 1, and the other end is fixedly connected to the output shaft of the drive motor 51. A plug-in post 721 is fixedly connected to the end of the worm gear 72 near the fixed frame 1. The end of the drive rod 52 extending out of the fixed frame 1 is the plug-in part 521, which has a plug-in slot 522 for inserting the plug-in post 721. The plug-in post 721 and the plug-in slot 522 constitute a power interface for quick connection and disconnection, allowing the heat insulation component 7 to be disassembled and maintained as an independent module. Furthermore, a single drive motor 51 can simultaneously drive the exhaust fan 32 to move and the heat insulation plate 73 to open and close, simplifying system control. The first frame 61 has a connection hole 611 for inserting the plug-in part 521. During installation, the connecting surfaces of the worm gear 72 and the drive rod 52 are surrounded by the first frame 61 within the connecting hole 611. This prevents external dust and other impurities from easily intruding into the connecting surfaces of the worm gear 72 and the drive rod 52 and interfering with the connection structure, thus improving the service life of the entire transmission structure. The connecting hole 611 facilitates the positioning of the worm gear 72 and the drive rod 52 during installation. First, the first frame 61 is inserted into the fixing frame 1, allowing one end of the drive rod 52 to enter the connecting hole 611. Then, the heat insulation component 7 is fitted against the first frame 61, allowing the worm gear 72 to be inserted into the connecting hole 611, thereby completing the installation.

[0037] Reference Figure 5 The outer periphery of the insertion post 721 is fixedly connected with several engaging teeth 722 that abut against the inner wall of the insertion slot 522. The engaging teeth 722 effectively increase the connection area and friction between the drive rod 52 and the worm gear 72, thereby improving the connection strength between them. During the start-up of the exhaust fan 32, some vibration may occur; the engaging teeth 722 also effectively prevent loosening between the worm gear 72 and the drive rod 52, ensuring the reliability of the connection. During rotation, the engaging teeth 722 significantly reduce backlash and slippage during transmission, thereby reducing transmission errors, improving transmission accuracy, and ensuring that the force of the drive rod 52's rotation is fully transmitted to the worm gear 72, enabling the worm gear 72 to rotate synchronously.

[0038] Reference Figure 4 , Figure 5 The end of the worm gear 72 opposite to the drive rod 52 is the operating end 723, which passes through the side wall of the second frame 71. The side wall of the operating end 723 has an operating groove 724 for manual operation. The design of the operating groove 724 allows the user to manually adjust the heat insulation plate 73 and open / close the baffle 2, increasing operational flexibility and convenience. In this embodiment, the operating groove 724 has a hexagonal cross-section, which, when used with an Allen wrench, allows for easy rotation of the worm gear 72, thereby reducing the force required by the user.

[0039] Reference Figure 2 , Figure 3 A positioning rod 12 is connected to the side of the fixed frame 1 away from the baffle 2. Both the first frame 61 and the second frame 71 have positioning holes 8 through which the positioning rod 12 passes. One end of the positioning rod 12 is threadedly connected to a nut 13 that abuts against the outer wall of the second frame 71. The positioning rod 12, in conjunction with the positioning holes 8, facilitates the positioning and installation of the filter assembly 6, the heat insulation assembly 7, and the fixed frame 1. During installation, first insert the positioning rod 12 into the first frame 61, then align the positioning hole 8 of the second frame 71 with the positioning rod 12 and insert it, so that the worm gear 72 is inserted into the connecting hole 611 and connected to the drive rod 52. Finally, tighten the nut 13 to ensure a tight fit between the fixed frame 1, the first frame 61, and the second frame 71, completing the fixation. In this embodiment, two positioning rods 12 are provided, located on both sides of the fixed frame 1, ensuring accurate relative positions between the components during pre-assembly, thus facilitating installation.

[0040] Reference Figure 2 A guide block 313 is fixedly connected to the outer wall of the movable frame 31, and a guide groove 14 is provided on the inner wall of the fixed frame 1. A guide rod 141 passing through the guide block 313 is fixedly connected to the inner wall of the guide groove 14. The guide rod 141, together with the guide block 313, can play a positioning and guiding role, so that the movable frame 31 can only move in a straight line along the length direction of the guide rod 141, thereby preventing the fixed frame 1 from jamming, tilting or other unexpected movements during the movement, and ensuring that the movement process is smooth.

[0041] Reference Figure 1 A photovoltaic panel 22 is fixedly connected to the outer wall of the baffle 2. The photovoltaic panel 22 on the outer wall of the baffle 2 can convert solar energy into electrical energy to supply power, thereby improving energy utilization efficiency, reducing energy consumption, and having better environmental benefits.

[0042] The implementation principle of the building exterior wall ventilation device in this application embodiment is as follows: When ventilation is performed, the drive motor 51 starts, driving the drive rod 52 to rotate. At this time, the moving frame 31 moves closer to the building exterior wall. The connecting rod 4 on one side of the moving frame 31 pushes the baffle 2 to open the baffle 2. At the same time, the drive rod 52 rotates, driving the worm gear 72 to rotate, so that the heat insulation plate 73 can open synchronously. At this time, both sides of the ventilation device are opened, realizing the effect of indoor ventilation. During installation, first move the baffle 2 and the heat insulation plate 73 to the closed state, align the positioning holes 8 of the filter assembly 6 and the heat insulation assembly 7 with the positioning rod 12 on the fixed frame 1 and insert them, and tighten the nut 13 to complete the installation.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A building exterior wall ventilation device, characterized in that, include: A fixed frame (1) is provided with a sliding groove (11) on the inner wall of the fixed frame (1); Baffle (2), the baffle (2) is rotatably connected to the outside of the fixed frame (1), and a rotating seat (21) is fixedly connected to the inner wall of the baffle (2). The exhaust assembly (3) includes a movable frame (31) and an exhaust fan (32) rotatably connected to the movable frame (31). A sliding seat (311) is fixedly connected to the outer periphery of the movable frame (31). The sliding seat (311) is located in the slide groove (11). A connecting seat (312) is connected to the side of the movable frame (31) near the baffle (2). Linkage (4), one end of which is rotatably connected to connecting seat (312), and the other end of which is rotatably connected to rotating seat (21); The drive unit (5) is located inside the fixed frame (1). The drive unit (5) includes a drive motor (51) fixedly connected inside the fixed frame (1) and a drive rod (52) that passes through and is threaded to the sliding seat (311). One end of the drive rod (52) passes through the fixed frame (1). The filter assembly (6) includes a first frame (61) detachably connected to one side of the movable frame (31) and a filter screen (62) fixedly connected inside the first frame (61). A heat insulation component (7) is detachably connected to one side of a first frame (61). The heat insulation component (7) includes a second frame (71), a worm gear (72) passing through and rotatably connected inside the second frame (71), several heat insulation plates (73) disposed inside the second frame (71), and rotating shafts (74) fixedly connected to both sides of the heat insulation plates (73). A drive cavity (711) for placing the rotating shafts (74) is opened inside the second frame (71). The rotating shafts (74) pass through and rotatably connected to the inner wall of the drive cavity (711). A worm wheel (75) meshing with the worm gear (72) is fixedly connected to the rotating shafts (74). A linkage component (76) is connected to one side of several of the rotating shafts (74). The worm gear (72) The drive rod (52) is detachably connected to the drive rod (52). The end of the drive rod (52) is a plug-in part (521). The plug-in part (521) has a plug-in groove (522). The end of the worm gear (72) is fixedly connected to a plug-in post (721) for inserting into the plug-in groove (522). The first frame (61) has a connection hole (611) for inserting one end of the drive rod (52) and the worm gear (72). The fixed frame (1) is fixedly connected to a positioning rod (12) on the side away from the baffle (2). The first frame (61) and the second frame (71) both have positioning holes (8) for the positioning rod (12) to pass through. The end of the positioning rod (12) is threaded with a nut (13). The nut (13) abuts against the second frame (71).

2. The building exterior wall ventilation device according to claim 1, characterized in that, The outer periphery of the plug (721) is fixedly connected with a plurality of engaging teeth (722), and the outer wall of the plurality of engaging teeth (722) abuts against the inner wall of the plug groove (522).

3. The building exterior wall ventilation device according to claim 1, characterized in that, The end of the worm gear (72) facing away from the drive rod (52) is the operating end (723). The operating end (723) is inserted through the second frame (71). The operating end (723) has an operating slot (724) for manual operation.

4. The building exterior wall ventilation device according to claim 1, characterized in that, The linkage assembly (76) includes several rocker arms (761) fixedly connected to the rotating shaft (74) and linkage rods (762) movably connected to the several rocker arms (761).

5. The building exterior wall ventilation device according to claim 1, characterized in that, The outer wall of the movable frame (31) is fixedly connected to a guide block (313), and the inner wall of the fixed frame (1) is provided with a plurality of guide grooves (14) for the guide block (313) to be placed in. Each of the plurality of guide grooves (14) is fixedly connected to a guide rod (141) that passes through the guide block (313).

6. The building exterior wall ventilation device according to claim 1, characterized in that, A photovoltaic panel (22) is fixedly connected to the outer wall of the baffle (2).

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