An indoor ventilation device

Abstract

This utility model provides an indoor ventilation device, relating to the field of indoor ventilation technology. It includes an outer frame and several guide vanes disposed within the outer frame. A chamber is formed at the bottom of the outer frame. The blade shafts of the guide vanes pass through the bottom of the outer frame and extend to be rotatably connected to the bottom of the chamber. An electric push rod is fixedly installed on one side of the top of the chamber. A slide bar, which is inserted into the inner wall of the chamber, is fixedly installed at the telescopic end of the electric push rod. The slide bar slides along the arrangement direction of the guide vanes, and a connecting frame is fixedly installed on the surface of the slide bar near each guide vane. The extension of the electric push rod pushes the slide bar to slide, causing the connecting frame to move. The connecting frame then pushes a rotating arm and a ring to rotate, thereby rotating and opening the guide vanes fixedly installed with the ring. In this solution, the opening and closing of the guide vanes depends on the extension and retraction of the electric push rod and is not affected by outdoor wind speed.

Description

Technical Field

[0001] This utility model relates to the field of indoor ventilation technology, and in particular to an indoor ventilation device. Background Technology

[0002] Indoor ventilation is an important means of improving indoor air quality, regulating temperature and humidity, and reducing pollutant accumulation. It has a crucial impact on the comfort of living and working environments and human health. Therefore, an existing indoor airflow ventilation device, with publication number CN221780907U, is installed in the operating area using a mounting frame. When the outside wind is strong, the wind force drives the wind vane to rotate, which in turn drives one of the guide vanes to rotate. Under the action of the pressure wheel, the rotation of one guide vane drives all the guide vanes to rotate and open via the transmission belt. The torsion spring is deformed by the force, thereby guiding and ventilating the room, introducing fresh air and expelling stale air. When the wind force gradually decreases, the torsion spring drives the guide vanes to rotate and return to their original position. The rotation of the guide vanes drives the wind vane to rotate and return to its original position, thus automatically closing the guide vanes when there is no wind.

[0003] However, this indoor ventilation device relies on the external natural wind to rotate the wind vane, which in turn drives the air guide blades to rotate and open via a transmission belt. If the wind force is too weak to rotate the wind vane, the air guide blades will not be able to open, resulting in poor ventilation. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art and to propose an indoor ventilation device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an indoor ventilation device, comprising an outer frame and a plurality of guide vanes disposed within the outer frame. A cavity is formed at the bottom of the outer frame. The blade shaft of the guide vanes passes through the bottom of the outer frame and extends to be rotatably connected to the bottom of the cavity. An electric push rod is fixedly installed on one side of the top of the cavity. A slide bar is fixedly installed at the telescopic end of the electric push rod and inserted into the inner wall of the cavity. The slide bar slides along the arrangement direction of the plurality of guide vanes, and a connecting frame is fixedly installed on the surface of the slide bar near each guide vane. A rotating arm is sleeved on the part of the guide vane blade shaft located inside the cavity. A ring is also fixedly installed on the part of the guide vane blade shaft located inside the cavity. A post is movably installed on the surface of the ring, passing through the ring and the rotating arm. The swing end of the rotating arm extends downward in a columnar shape and is inserted into the inner wall of the connecting frame at an adjacent position.

[0006] Preferably, a wind speed measuring wheel is provided on the top edge of the outer frame facade.

[0007] Preferably, the ring is elastically connected to the cavity wall by a torsion spring.

[0008] Preferably, a spring rod is fixedly installed on the side of the ring in the direction of the ring end face, and the telescopic end of the spring rod faces the ring and is fixedly connected to the surface of the insertion post.

[0009] Preferably, a convex disc connected to the telescopic end of the spring rod is fixedly installed at one end of the insertion post, and the diameter of the end face of the convex disc is not less than the diameter of the telescopic end of the spring rod.

[0010] Preferably, a fixing frame is fixedly installed on the inner wall of the cavity at the position of each air guide blade fan shaft. The fixing frame is sleeved on the air guide blade fan shaft at the corresponding position, and a lifting ring sleeved on the air guide blade fan shaft is inserted into the surface of the fixing frame. The lifting ring is located above the spring rod and is used to overlap with the edge of the convex plate.

[0011] Preferably, a lever block is fixedly installed on the side of the insertion post and slidably connected to the cavity wall. The inner surface of the outer frame is hollowed out at the position of each lever block, and a screw for inserting into the lever block is threaded above each hollowed-out position on the inner surface of the outer frame.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the electric push rod extends to push the slide bar to slide, which drives the connecting frame to move. The connecting frame then pushes the rotating arm and the ring to rotate, thereby realizing the rotation and opening of the air guide blade that is fixedly installed with the ring. In this solution, the opening and closing of the air guide blade depends on the extension and retraction of the electric push rod and is not affected by the outdoor wind speed.

[0014] 2. In this utility model, the lifting ring is driven to slide towards the convex plate by the upper sliding block, and then the lifting ring pushes the convex plate to move the insertion post to disengage from the rotating arm. At this time, when the rotating arm rotates under the action of the connecting frame, it will drive the rotating arm to revolve around the fan blade axis of the air guide blade. During this process, the torsion spring is used to ensure that the ring will not rotate, so the air guide blade will not rotate. Therefore, the personnel can adjust the number and position of the opened air guide blade. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of an indoor ventilation device;

[0016] Figure 2 This utility model proposes an indoor ventilation device. Figure 1 A schematic diagram of the rear view structure;

[0017] Figure 3 This utility model provides a schematic diagram of the bottom edge of the outer frame of an indoor ventilation device.

[0018] Figure 4 This utility model proposes an indoor ventilation device. Figure 3 A cross-sectional structural diagram.

[0019] Legend: 1. Outer frame; 2. Guide vane; 3. Wind speed measuring wheel; 4. Toggle block; 5. Screw; 6. Chamber; 7. Electric push rod; 8. Slide bar; 9. Connecting frame; 10. Rotating arm; 11. Fixing frame; 12. Lifting ring; 13. Protruding plate; 14. Spring rod; 15. Insert post; 16. Circular ring. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figures 1-4 As shown, an indoor ventilation device includes an outer frame 1 and several guide vanes 2 disposed within the outer frame 1. A wind speed measuring wheel 3 is installed on the top edge of the outer facade of the outer frame 1. Since the outer facade of the outer frame 1 is located outdoors, the wind speed measuring wheel 3 can be used to measure the outdoor wind speed in real time. A chamber 6 is formed at the bottom of the outer frame 1. The blade shafts of the guide vanes 2 pass through the bottom of the outer frame 1 and extend to be rotatably connected to the bottom of the chamber 6. An electric push rod 7 is fixedly installed on one side of the top of the chamber 6. A sliding strip 8, which is inserted into the inner wall of the chamber 6, is fixedly installed at the telescopic end of the electric push rod 7. The device utilizes the telescopic extension of the electric push rod 7... The slider 8 can slide horizontally within the chamber 6. The slider 8 slides along the arrangement direction of several guide vanes 2, and a connecting frame 9 is fixedly installed on the surface of the slider 8 near each guide vane 2. A rotating arm 10 is fitted onto the portion of the guide vane 2's blade shaft located within the chamber 6. A ring 16 is also fixedly installed on the portion of the guide vane 2's blade shaft located within the chamber 6. A post 15, penetrating the ring 16 and the rotating arm 10, is movably installed on the surface of the ring 16. The swing end of the rotating arm 10 extends downward in a columnar shape and inserts into the inner wall of the connecting frame 9 at an adjacent position. Figure 3 and Figure 4When the insert 15 is simultaneously inserted into the ring 16 and the rotating arm 10, the slide bar 8 drives the connecting frame 9 to move. The connecting frame 9 can push the rotating arm 10 to revolve around the fan blade axis of the sleeved air guide blade 2. During the revolve of the rotating arm 10, the insert 15 can be used to make the ring 16 rotate with the rotation of the rotating arm 10, thereby realizing the rotation and opening of the air guide blade 2 fixedly installed with the ring 16. That is, in this solution, the opening and closing of the air guide blade 2 depends on the extension and retraction of the electric push rod 7 and will not be affected by the outdoor wind speed.

[0023] The ring 16 is elastically connected to the wall of the chamber 6 by a torsion spring. Under normal circumstances, the torsion spring ensures that the relative position of the ring 16 and the chamber 6 is fixed. When the rotating arm 10 rotates and drives the ring 16 to rotate against the torsion force of the torsion spring, the guide vane 2 rotates and opens. A spring rod 14 is fixedly installed on the side of the ring 16, located in the direction of the end face of the ring 16. The extension end of the spring rod 14 faces the ring 16 and is fixedly connected to the surface of the insertion post 15. Under normal circumstances, the insertion post 15 is kept through the ring by the pushing action of the spring rod 14. The state of the ring 16 and the rotating arm 10; a cam 13 connected to the telescopic end of the spring rod 14 is fixedly installed at one end of the insert post 15. The diameter of the end face of the cam 13 is not less than the diameter of the telescopic end of the spring rod 14. A fixing bracket 11 is fixedly installed on the inner wall of the chamber 6 at the position of each air guide blade 2 fan blade shaft. The fixing bracket 11 is sleeved on the corresponding position of the air guide blade 2 fan blade shaft, and a lifting ring 12 sleeved on the air guide blade 2 fan blade shaft is inserted into the surface of the fixing bracket 11. The lifting ring 12 is located above the spring rod 14 and is used to connect with the edge of the cam 13. The insert post 15 is fixedly installed on the side with a lever 4 that slides through the wall of the chamber 6. The inner surface of the outer frame 1 is hollowed out at the position of each lever 4, and a screw 5 for inserting into the lever 4 is threaded above each hollowed-out position on the inner surface of the outer frame 1. When the lever 4 is slid up using the fixed frame 11, the lifting ring 12 can slide along the surface of the fixed frame 11 towards the convex plate 13. In turn, the lifting ring 12 pushes the convex plate 13, which in turn drives the insert post 15 to move against the thrust of the spring rod 14. When the rotating arm 10 is disengaged from the rotating arm 10, the rotating arm 10 will rotate around the fan blade axis of the guide vane 2 under the action of the connecting frame 9. During this process, the torsion spring ensures that the ring 16 will not rotate, so the guide vane 2 will not rotate. Therefore, the number and position of the open guide vane 2 can be adjusted by the personnel. In order to ensure that the insert 15 remains separated from the rotating arm 10, the screw 5 passes through the sliding block 4 and is threaded to the surface of the outer frame 1, so that the position of the block 4 can be fixed.

[0024] In addition, the fixed frame 11 used in this solution is coaxially set with the fan blade shaft of the air guide blade 2. Therefore, when the air guide blade 2 is rotated open, the air guide blade 2 will rotate relative to the fixed frame 11 and the lifting ring 12.

[0025] Working principle: Based on the outdoor wind speed measured by the wind speed measuring wheel 3, when indoor ventilation is required, the electric push rod 7 extends and pushes the slide bar 8 to slide horizontally in the chamber 6. The slide bar 8 drives the connecting frame 9 to move, and the connecting frame 9 can push the rotating arm 10 to revolve around the fan blade axis of the sleeved air guide blade 2. During the revolution of the rotating arm 10, the set insert 15 can make the ring 16 rotate with the rotation of the rotating arm 10, thereby realizing the rotation and opening of the air guide blade 2 which is fixedly installed with the ring 16.

[0026] The wiring diagrams for the wind speed measuring wheel 3 and the electric push rod 7 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the wind speed measuring wheel 3 and the electric push rod 7 will not be explained in detail.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or equivalent variations to the above-disclosed technical content and apply them to other fields. However, any simple modifications, equivalent variations and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An indoor ventilation device, comprising an outer frame (1) and a plurality of guide vanes (2) disposed within the outer frame (1), characterized in that: The bottom of the outer frame (1) is provided with a cavity (6). The blade shaft of the guide vane (2) passes through the bottom of the outer frame (1) and extends to be rotatably connected to the bottom of the cavity (6). An electric push rod (7) is fixedly installed on one side of the top of the cavity (6). A slide bar (8) that is inserted into the inner wall of the cavity (6) is fixedly installed on the telescopic end of the electric push rod (7). The slide bar (8) slides along the arrangement direction of several guide vanes (2) and the surface of the slide bar (8) is close to each guide vane (2). All are fixedly installed with a connecting frame (9). The part of the guide vane (2) located in the chamber (6) is fitted with a rotating arm (10). The part of the guide vane (2) located in the chamber (6) is also fixedly installed with a ring (16). The surface of the ring (16) is movably installed with a post (15) that passes through the ring (16) and the rotating arm (10). The swing end of the rotating arm (10) extends downward in a column shape and is inserted into the inner wall of the connecting frame (9) at the adjacent position.

2. The indoor ventilation device according to claim 1, characterized in that: The outer frame (1) has a wind speed measuring wheel (3) installed on the top edge of its exterior facade.

3. The indoor ventilation device according to claim 1, characterized in that: The ring (16) is elastically connected to the cavity wall of the chamber (6) by a torsion spring.

4. The indoor ventilation device according to claim 3, characterized in that: A spring rod (14) is fixedly installed on the side of the ring (16) in the direction of the end face of the ring (16), and the telescopic end of the spring rod (14) faces the ring (16) and is fixedly connected to the surface of the insert (15).

5. The indoor ventilation device according to claim 4, characterized in that: One end of the insert (15) is fixedly installed with a cam (13) connected to the telescopic end of the spring rod (14), and the diameter of the end face of the cam (13) is not less than the diameter of the telescopic end of the spring rod (14).

6. The indoor ventilation device according to claim 3, characterized in that: The inner wall of the chamber (6) is fixedly installed with a fixing frame (11) at the position of the fan shaft of each air guide blade (2). The fixing frame (11) is sleeved on the fan shaft of the air guide blade (2) at the corresponding position, and a lifting ring (12) sleeved on the fan shaft of the air guide blade (2) is inserted into the surface of the fixing frame (11). The lifting ring (12) is located above the spring rod (14) and is used to overlap with the edge of the cam (13).

7. The indoor ventilation device according to claim 6, characterized in that: The insert (15) is fixedly installed with a sliding block (4) that slides through the cavity wall of the chamber (6). The inner surface of the outer frame (1) is hollowed out at the position of each block (4), and a screw (5) for inserting into the block (4) is threaded above each hollowed-out part of the inner surface of the outer frame (1).

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