A passive ventilation and purification device with adjustable indoor pressure

Abstract

The utility model discloses a kind of unpowered ventilation purification devices of adjustable indoor pressure, it includes ventilation pipe, the inside fixed connection of ventilation pipe has purification filter plate and is installed with elastic switch, the surface of elastic switch is installed with baffle, the right end fixed connection of ventilation pipe has regulating valve shell, the surface of regulating valve shell is fixedly connected with defence cover by bolt.The utility model is monitored to indoor air pressure by baroceptor and signal is transmitted to controller, so that controller controls motor to open, and then motor is rotated by main rotating lever and drives branch rod one, at this time under the linkage action of connecting rod, so that branch rod two drives sub rotating lever to rotate, and then so that main rotating lever and sub rotating lever all drive valve plate to rotate, it can reach that indoor air pressure is monitored in real time by baroceptor, then air intake grille is driven to rotate moderately by motor, so that the purpose that air intake amount in ventilation pipe is adjusted to match with indoor negative pressure demand is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of indoor ventilation technology, and in particular relates to a non-powered ventilation and purification device with adjustable indoor pressure. Background Technology

[0002] Making proper use of natural ventilation can regulate indoor thermal comfort, replenish fresh air, and create a healthy, comfortable, and efficient working and living environment. For buildings such as offices and residences without centralized fresh air systems, natural ventilation is mainly achieved through cross ventilation created by opening doors and windows. However, this can bring a series of negative effects. During the air conditioning or heating season, opening doors and windows will cause a large amount of cold or heat loss, resulting in serious energy waste. If doors and windows are closed, it is not conducive to replenishing fresh air and improving indoor air quality, which can have serious negative impacts on people's physical and mental health. Some buildings use through-wall ventilation ducts to allow outside air to enter the room, and the air can be filtered through the purification filter plates inside the ventilation ducts.

[0003] The air intake volume of some ventilation ducts is determined solely by the duct diameter. Since the indoor negative pressure value is not fixed, in order to make the purification ventilation compatible with the indoor air negative pressure value, a non-powered ventilation and purification device with adjustable indoor pressure is needed. The indoor air pressure can be monitored in real time by an air pressure sensor, and then the air intake grille can be rotated appropriately by a motor, so that the air intake volume in the ventilation duct can be adjusted to match the indoor negative pressure requirement. Utility Model Content

[0004] The purpose of this invention is to provide a non-powered ventilation and purification device that can adjust indoor pressure. It monitors indoor air pressure in real time through a pressure sensor, and then drives the air intake grille to rotate appropriately through a motor, thereby adjusting the air intake in the ventilation duct to match the indoor negative pressure requirement, so as to solve the technical problems mentioned in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A non-powered ventilation and purification device with adjustable indoor pressure, comprising a ventilation pipe: a purification filter plate is fixedly connected inside the ventilation pipe and an elastic switch is installed thereon; a blocking plate is installed on the surface of the elastic switch; a regulating valve housing is fixedly connected to the right end of the ventilation pipe; a protective cover is fixedly connected to the surface of the regulating valve housing by bolts; a main rotating rod and a secondary rotating rod are rotatably connected to the inner wall of the regulating valve housing; both ends of the main rotating rod and the secondary rotating rod extend to the outside of the regulating valve housing; valve plates are welded to the surfaces of the main rotating rod and the secondary rotating rod; a motor is fixedly connected to the top of the regulating valve housing by bolts; a support rod one and a support rod two are fixedly connected to the bottom ends of the main rotating rod and the secondary rotating rod, respectively; a connecting rod is rotatably connected between the support rod one and the support rod two through a rotating shaft; a U-shaped hoop and a clamping plate are sleeved on the surface of the ventilation pipe; a nut block is threadedly connected to the surface of the U-shaped hoop; a vertical plate is welded to the bottom of the clamping plate; a controller and a pressure sensor are fixedly connected to the surface of the vertical plate by bolts.

[0006] Preferably, the inner wall of the protective shield is fixedly connected with a baffle plate by bolts.

[0007] Preferably, the output shaft of the motor is fixedly connected to the top end of the main rotating rod.

[0008] Preferably, the pressure sensor and the motor are electrically connected to the controller via wires, and the controller is connected to an external power supply line.

[0009] Preferably, the surface of the U-shaped hoop is fitted with a washer, and the washer is an elastic washer.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model monitors indoor air pressure using a pressure sensor and transmits the signal to a controller, which then controls the motor to start. The motor then drives the first support rod to rotate via the main rotating rod. At this time, under the linkage of the connecting rod, the second support rod drives the auxiliary rotating rod to rotate. Subsequently, both the main rotating rod and the auxiliary rotating rod drive the valve plate to rotate. This achieves real-time monitoring of indoor air pressure through the pressure sensor. Then, the motor drives the air intake grille to rotate appropriately, thereby adjusting the air intake in the ventilation duct to match the indoor negative pressure requirement.

[0012] 2. This utility model pre-filters the air entering the ventilation duct by setting up a baffle plate, which prevents foreign objects such as dust from entering the ventilation duct and clogging the purification filter plate, thereby improving the cleanliness of the air entering the ventilation duct.

[0013] 3. By setting the washer, this utility model increases the friction on the surface of the nut block, preventing the nut block from loosening and falling off the surface of the U-shaped hoop due to external force or vibration, thereby improving the stability of the nut block locking the clamping plate. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0016] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0017] Figure 3 This is a three-dimensional schematic diagram of the main rotating rod and the auxiliary rotating rod according to an embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Ventilation duct, 2. Purification filter plate, 3. Flexible switch, 4. Blocking plate, 5. Regulating valve housing, 6. Protective cover, 7. Baffle plate, 8. Main rotating rod, 9. Secondary rotating rod, 10. Valve plate, 11. Motor, 12. Support rod one, 13. Support rod two, 14. Connecting rod, 15. U-shaped hoop, 16. Clamping plate, 17. Nut block, 18. Vertical plate, 19. Controller, 20. Air pressure sensor, 21. Washer. Detailed Implementation

[0020] In the following description, embodiments of the adjustable indoor pressure non-powered ventilation and purification device of the present invention will be described with reference to the accompanying drawings.

[0021] Example 1:

[0022] Figure 1-3This invention illustrates an embodiment of a non-powered ventilation and purification device with adjustable indoor pressure, comprising a ventilation pipe 1. A purification filter plate 2 is fixedly connected inside the ventilation pipe 1, and an elastic switch 3 is installed thereon. A blocking plate 4 is installed on the surface of the elastic switch 3. A regulating valve housing 5 is fixedly connected to the right end of the ventilation pipe 1. A protective cover 6 is bolted to the surface of the regulating valve housing 5, and a baffle plate 7 is bolted to the inner wall of the protective cover 6. The baffle plate 7 pre-filters the air entering the ventilation pipe 1, preventing external pollutants such as lint from entering the ventilation pipe 1 and clogging the purification filter plate 2, thus improving the cleanliness of the air entering the ventilation pipe 1. A main rotating rod 8 and a secondary rotating rod 9 are rotatably connected to the inner wall of the regulating valve housing 5. Both ends of the main rotating rod 8 and the auxiliary rotating rod 9 extend to the outside of the regulating valve housing 5. Valve plates 10 are welded to the surfaces of the main rotating rod 8 and the auxiliary rotating rod 9. A motor 11 is fixedly connected to the top of the regulating valve housing 5 by bolts. The output shaft of the motor 11 is fixedly connected to the top of the main rotating rod 8. Support rod 12 and support rod 23 are fixedly connected to the bottom of the main rotating rod 8 and the auxiliary rotating rod 9, respectively. Support rod 12 and support rod 23 are connected to each other by a rotating shaft and a connecting rod 14. A U-shaped hoop 15 and a clamping plate 16 are fitted on the surface of the ventilation pipe 1. A nut block 17 is threaded onto the surface of the U-shaped hoop 15. A vertical plate 18 is welded to the bottom of the clamping plate 16. A controller 19 and a pressure sensor 20 are fixedly connected to the surface of the vertical plate 18 by bolts.

[0023] Example 2:

[0024] Figure 1-3This invention illustrates an embodiment of a non-powered ventilation and purification device with adjustable indoor pressure, comprising a ventilation pipe 1. A purification filter plate 2 is fixedly connected inside the ventilation pipe 1, and an elastic switch 3 is installed thereon. A blocking plate 4 is installed on the surface of the elastic switch 3. A regulating valve housing 5 is fixedly connected to the right end of the ventilation pipe 1. A protective cover 6 is bolted to the surface of the regulating valve housing 5. A main rotating rod 8 and a secondary rotating rod 9 are rotatably connected to the inner wall of the regulating valve housing 5. Both ends of the main rotating rod 8 and the secondary rotating rod 9 extend to the outside of the regulating valve housing 5. A valve plate 10 is welded to the surface of both the main rotating rod 8 and the secondary rotating rod 9. A motor 11 is bolted to the top of the regulating valve housing 5. Support rod 12 and support rod 2 13 are fixedly connected to the bottom ends of the main rotating rod 8 and the secondary rotating rod 9, respectively. A connecting rod 14 is rotatably connected to the ventilation pipe 1 via a rotating shaft. A U-shaped hoop 15 and a clamping plate 16 are fitted on the surface of the ventilation pipe 1. A nut block 17 is threaded onto the surface of the U-shaped hoop 15. A vertical plate 18 is welded to the bottom of the clamping plate 16. A controller 19 and a pressure sensor 20 are fixedly connected to the surface of the vertical plate 18 by bolts. The pressure sensor 20 and the motor 11 are electrically connected to the controller 19 via wires. The controller 19 is connected to an external power supply line. A washer 21 is fitted on the surface of the U-shaped hoop 15. The washer 21 is an elastic washer. The washer 21 increases the friction on the surface of the nut block 17, preventing the nut block 17 from loosening and coming off the surface of the U-shaped hoop 15 due to external force or vibration, thereby improving the stability of the nut block 17 locking the clamping plate 16.

[0025] Working Principle: When using this utility model, the user installs the ventilation pipe 1 in the wall hole and presses the blocking plate 4. At this time, under the reaction force of the elastic switch 3, the blocking plate 4 is disengaged from the ventilation pipe 1 and opened. Subsequently, the negative pressure in the room allows outside air to enter the room through the protective cover 6 and the ventilation pipe 1. During this process, the air entering the room is purified and filtered by the setting of the purification filter plate 2. At the same time, the air pressure sensor 20 monitors the indoor air pressure and transmits the signal to the controller 19, so that the controller 19 controls the motor 11 to start. Then, the motor 11 drives the support rod 12 to rotate through the main rotating rod 8. At this time, under the linkage of the connecting rod 14, the support rod 13 drives the auxiliary rotating rod 9 to rotate. Then, the main rotating rod 8 and the auxiliary rotating rod 9 both drive the valve plate 10 to rotate, so that the air flowing in the ventilation pipe 1 is adjusted to match the actual value of the indoor negative pressure. It realizes the real-time monitoring of indoor air pressure through the air pressure sensor. Then, the motor drives the air intake grille to rotate appropriately, so that the air intake in the ventilation pipe is adjusted to match the indoor negative pressure requirement.

[0026] In summary, this adjustable indoor pressure non-powered ventilation and purification device monitors indoor air pressure through a pressure sensor 20 and transmits the signal to a controller 19. The controller 19 then controls the motor 11 to start. The motor 11 then drives the support rod 12 to rotate via the main rotating rod 8. At this time, under the linkage of the connecting rod 14, the support rod 13 drives the auxiliary rotating rod 9 to rotate. Consequently, both the main rotating rod 8 and the auxiliary rotating rod 9 drive the valve plate 10 to rotate. This achieves real-time monitoring of indoor air pressure through the pressure sensor, and then the motor drives the air intake grille to rotate appropriately, thereby adjusting the air intake in the ventilation duct to match the indoor negative pressure requirement.

Claims

1. A passive ventilation and purification device for regulating indoor pressure, characterized in that, Includes a ventilation duct (1): a purification filter plate (2) is fixedly connected inside the ventilation duct (1) and an elastic switch (3) is installed thereon. A blocking plate (4) is installed on the surface of the elastic switch (3). A regulating valve housing (5) is fixedly connected to the right end of the ventilation duct (1). A protective cover (6) is fixedly connected to the surface of the regulating valve housing (5) by bolts. A main rotating rod (8) and a secondary rotating rod (9) are rotatably connected to the inner wall of the regulating valve housing (5). Both ends of the main rotating rod (8) and the secondary rotating rod (9) extend to the outside of the regulating valve housing (5). A valve plate (10) is welded to the surface of both the main rotating rod (8) and the secondary rotating rod (9). A motor (11) is fixedly connected to the top of the valve housing (5) by bolts. Support rod one (12) and support rod two (13) are fixedly connected to the bottom ends of the main rotating rod (8) and the auxiliary rotating rod (9), respectively. Support rod one (12) and support rod two (13) are connected to a connecting rod (14) through a rotating shaft. A U-shaped hoop (15) and a clamping plate (16) are fitted on the surface of the ventilation pipe (1). A nut block (17) is threaded on the surface of the U-shaped hoop (15). A vertical plate (18) is welded to the bottom of the clamping plate (16). A controller (19) and a pressure sensor (20) are fixedly connected to the surface of the vertical plate (18) by bolts.

2. A passive, pressure-regulated ventilation and purification device according to claim 1, wherein, The inner wall of the protective shield (6) is fixedly connected to a baffle plate (7) by bolts.

3. A passive, pressure-regulated ventilation and purification device according to claim 2, wherein, The output shaft of the motor (11) is fixedly connected to the top end of the main rotating rod (8).

4. A passive, pressure-regulated ventilation and purification device according to claim 3, wherein, The pressure sensor (20) and the motor (11) are electrically connected to the controller (19) via wires, and the controller (19) is connected to an external power supply line.

5. A passive, pressure-regulated ventilation and purification device according to claim 4, wherein, The surface of the U-shaped hoop (15) is fitted with a washer (21), which is an elastic washer.

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