Air pressure balance type high-speed elevator car ventilation device

Abstract

The utility model discloses a kind of air pressure balance type high-speed elevator car ventilation devices, belong to high-speed elevator car ventilation technical field, including fixed frame, the inner wall of the fixed frame is fixedly connected with controller, the inner wall of fixed frame is respectively fixedly installed with two forward rotation servo motors and two reverse rotation servo motors, the output end of each forward rotation servo motor power and the output end of reverse rotation servo motor power are fixedly connected with fan blade, the bottom surface of fixed frame is fixedly connected with air pressure sensor, the inner wall of fixed frame is provided with refrigeration groove.The air pressure balance type high-speed elevator car ventilation device, by setting air pressure sensor, when high-speed elevator rapid lifting leads to shaft air pressure sharp change, air pressure sensor can monitor the air pressure in car in real time, and signal is transmitted to controller, the operating state of controller accurate regulation and control forward rotation servo motor or reverse rotation servo motor, forward rotation servo motor extracts wind from car, and reverse rotation servo motor blows air into car.

Description

Technical Field

[0001] This utility model belongs to the field of high-speed elevator car ventilation technology, and in particular relates to a pressure-balanced high-speed elevator car ventilation device. Background Technology

[0002] High-speed elevator car ventilation refers to the design and implementation of an effective ventilation system to ensure air circulation within the elevator car, maintaining a comfortable and safe environment. Since high-speed elevators generate airflow and heat during operation, the ventilation system helps to expel this excess heat and exhaust gas while ensuring sufficient oxygen in the car, thereby improving the passenger experience.

[0003] Currently, while existing high-speed elevator car ventilation systems provide good ventilation in actual use, they cannot effectively balance the air pressure inside the elevator car. During rapid ascent and descent, the air pressure outside the car changes drastically with altitude. If the air pressure inside the car cannot be adjusted synchronously, a large pressure difference will form between the inside and outside of the car, which can compress the eardrums of passengers. Furthermore, a severe pressure difference between the elevator car and the shaft may generate additional pressure impact on the car structure and door operator system. Over time, this can lead to problems such as aging of seals and door operator malfunctions, significantly affecting the service life of the elevator.

[0004] To address this issue, we propose a pressure-balanced high-speed elevator car ventilation device. Utility Model Content

[0005] The purpose of this invention is to solve the problem of the inability to effectively balance the air pressure inside an elevator car in the existing technology, and to propose an air pressure balancing type high-speed elevator car ventilation device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pressure-balanced high-speed elevator car ventilation device includes a fixed frame. A controller is fixedly connected to the inner wall of the fixed frame. Two forward-rotating servo motors and two reverse-rotating servo motors are fixedly installed on the inner wall of the fixed frame. Each output end of the forward-rotating servo motor and the output end of the reverse-rotating servo motor are fixedly connected to a fan blade. A pressure sensor is fixedly connected to the bottom surface of the fixed frame. A cooling slot is formed in the inner wall of the fixed frame. A semiconductor cooling chip is fixedly connected to the inner wall of the cooling slot. A heat exchange box is fixedly connected to the inner wall of the fixed frame. Heat exchange fins are fixedly connected to the inner wall of the heat exchange box. An electric heating wire is fixedly connected to the inner wall of the fixed frame. The controller is electrically connected to the pressure sensor, the forward-rotating servo motors, and the reverse-rotating servo motors via wires.

[0007] Preferably, positioning blocks are fixedly connected to both the front and back of the fixed frame, and each positioning block has two positioning holes on its upper surface.

[0008] Preferably, a filter plate is provided inside the fixed frame, and the outer surface of the filter plate is slidably connected to the inner wall of the fixed frame.

[0009] Preferably, the inner wall of the filter plate is threaded with four bolts, and the bottom end of each bolt is threadedly connected to the inner wall of the fixing frame.

[0010] Preferably, the upper surface of the filter plate is fixedly connected to two fixing blocks, and the inner wall of each fixing block is rotatably connected to a pull ring.

[0011] Preferably, the bottom surfaces of the two positioning blocks are fixedly connected to a sealing gasket, and the inner wall of the sealing gasket is fixedly connected to the outer surface of the fixing frame.

[0012] Preferably, the bottom surface of the fixed frame is fixedly connected to four guide pipes, and the outer surface of each guide pipe is fixedly connected to a one-way valve.

[0013] In summary, the technical effects and advantages of this utility model are as follows: By installing air pressure sensors, when the high-speed elevator's rapid ascent and descent cause a sharp change in the shaft air pressure, the air pressure sensors can monitor the air pressure inside the car in real time and transmit the signal to the controller. The controller then precisely controls the operation of the forward or reverse servo motors. The forward servo motor draws air from inside the car, while the reverse servo motor blows air into the car. Through dynamic adjustment of the fan blade speed, the air pressure is synchronously regulated and balanced, effectively avoiding the problem of eardrum compression caused by excessive air pressure difference, thus improving riding comfort. Secondly, the bidirectional airflow regulation structure significantly reduces the impact of air pressure shock on the car structure by precisely controlling the air pressure difference inside and outside the car within a reasonable range. By setting up a semiconductor cooling chip, the semiconductor cooling chip can exchange heat efficiently with the heat exchange box through heat exchange fins. With the auxiliary heating of the electric heating wire, it avoids the air pressure from being affected by excessively high or low air temperature. It also prevents the efficiency and effect of the air pressure regulation balance from being affected by the temperature of the air entering the blower. This effect comes from the thermal motion characteristics of gas molecules and the physical relationship between temperature, volume, and pressure. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the fixed frame of this utility model; Figure 2 This is a three-dimensional cross-sectional structural diagram of the fixed frame of this utility model; Figure 3 This is a three-dimensional structural diagram of the heat exchange box of this utility model; Figure 4This is a three-dimensional structural diagram of the guide tube of this utility model.

[0015] In the diagram: 1. Fixed frame; 2. Positioning block; 3. Positioning hole; 4. Filter plate; 5. Fixed block; 6. Pull ring; 7. Bolt; 8. Sealing gasket; 9. Forward servo motor; 10. Reverse servo motor; 11. Controller; 12. Fan blade; 13. Semiconductor cooling chip; 14. Heat exchange box; 15. Heat exchange fins; 16. Pressure sensor; 17. Heating wire; 18. Guide pipe; 19. One-way valve; 20. Refrigeration tank. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 A pressure-balanced high-speed elevator car ventilation device includes a fixed frame 1, a controller 11 fixedly connected to the inner wall of the fixed frame 1, and positioning blocks 2 fixedly connected to the front and back of the fixed frame 1. Each positioning block 2 has two positioning holes 3 on its upper surface. The positioning blocks 2 provide a precise positioning basis for the installation of the entire ventilation device. In the actual installation process, the staff can quickly and accurately fix the device in the designated position of the elevator car through the positioning holes 3 on the positioning blocks 2, which greatly improves the installation efficiency and ensures the stability of the device installation. This avoids the normal operation of the device due to the deviation of the installation position, and ensures that the ventilation, pressure balance and other functions can be stably performed.

[0018] Two forward servo motors 9 and two reverse servo motors 10 are fixedly installed on the inner wall of the fixed frame 1. A filter plate 4 is installed inside the fixed frame 1. The outer surface of the filter plate 4 is slidably connected to the inner wall of the fixed frame 1. The filter plate 4 can effectively filter the air entering the elevator car, blocking dust, impurities and other contaminants from the air, ensuring the cleanliness of the air entering the car and providing a healthier riding environment for passengers. The sliding connection between the filter plate 4 and the inner wall of the fixed frame 1 makes the filter plate 4 easy to disassemble and install. When the filter plate 4 accumulates a lot of dust after a period of use, the staff can easily remove it for cleaning or replacement, making maintenance very convenient.

[0019] Each forward servo motor 9 and the reverse servo motor 10 is fixedly connected to a fan blade 12. A pressure sensor 16 is fixedly connected to the bottom surface of the fixed frame 1. Four bolts 7 are threadedly connected to the inner wall of the filter plate 4. The bottom end of each bolt 7 is threadedly connected to the inner wall of the fixed frame 1. The bolts 7 further strengthen the connection between the filter plate 4 and the fixed frame 1. During the operation of the device, the filter plate 4 may be impacted by airflow. The bolts 7 can stably fix the filter plate 4 in the fixed frame 1, preventing the filter plate 4 from shaking and affecting the filtration effect, or even preventing it from falling out of the fixed frame 1 and causing a malfunction.

[0020] A cooling groove 20 is provided on the inner wall of the fixed frame 1. A semiconductor cooling chip 13 is fixedly connected to the inner wall of the cooling groove 20. Two fixing blocks 5 are fixedly connected to the upper surface of the filter plate 4. A pull ring 6 is rotatably connected to the inner wall of each fixing block 5. The pull ring 6 provides a convenient force point for taking out and putting in the filter plate 4. When it is necessary to disassemble the filter plate 4, the operator can easily pull the filter plate 4 out of the fixed frame 1 by pulling the pull ring 6 without the need for other complicated tools, which simplifies the disassembly process of the filter plate 4 and further improves the convenience of maintenance.

[0021] A heat exchange box 14 is fixedly connected to the inner wall of the fixed frame 1. A heat exchange fin 15 is fixedly connected to the inner wall of the heat exchange box 14. An electric heating resistance wire 17 is fixedly connected to the inner wall of the fixed frame 1. A sealing gasket 8 is fixedly connected to the bottom surface of the two positioning blocks 2. The inner wall of the sealing gasket 8 is fixedly connected to the outer surface of the fixed frame 1. The sealing gasket 8 can enhance the sealing between the device and the elevator car installation part. When the device is running, it prevents unfiltered and untreated air from entering the car through the installation gap. It also prevents treated air in the car from leaking out, ensuring the efficiency of ventilation, air pressure regulation and other functions, and reducing energy loss.

[0022] The controller 11 is electrically connected to the air pressure sensor 16, the forward servo motor 9, and the reverse servo motor 10 via wires. Four guide pipes 18 are fixedly connected to the bottom surface of the fixed frame 1. Each guide pipe 18 has a one-way valve 19 fixedly connected to its outer surface. The guide pipes 18 can guide the treated air, allowing the air to enter the elevator car evenly along a preset path, ensuring consistent ventilation and air pressure balance in all areas of the car. The one-way valves 19 can effectively prevent air from flowing back into the device. For example, the two one-way valves 19 below the forward servo motor 9 only allow air from inside the car to flow out, while the two one-way valves 19 below the reverse servo motor 10 only allow external air to flow into the car, avoiding backflow of air and affecting the efficiency of air pressure balance.

[0023] The working principle of this utility model is as follows: In use, the operator first installs the device on the top side of the elevator, ensuring it is not horizontal. This allows for rapid air pressure balancing and ventilation while reducing airflow turbulence. Then, the operator connects the forward servo motor 9, the reverse servo motor 10, the controller 11, the thermoelectric cooler 13, the air pressure sensor 16, and the heating element 17 to an external power source. A portable power supply can be used. Depending on whether it's winter or summer, the operator connects the heating element 17 and the thermoelectric cooler 13 to the controller 11 for control. For example, in summer when the temperature is higher, the thermoelectric cooler 17 will be activated. The cooling element 13 is connected to the controller 11 for control, and conversely, the heating element 17 is connected. Then, the pressure sensor 16 and the controller 11 are activated. The pressure sensor 16 is a piezoresistive pressure sensor, based on the piezoresistive effect of semiconductor materials. When pressure is applied, the semiconductor resistance changes, and the pressure is detected by measuring the resistance change using a Wheatstone bridge. It is small in size and low in cost. After the pressure sensor 16 is activated, it can monitor the pressure data inside the car in real time and transmit this data to the controller 11. After receiving the pressure data, the controller 11 analyzes and processes it according to a preset pressure balance algorithm. When it determines that the pressure difference between the inside and outside of the car exceeds a preset threshold, it will... The controller 11 will immediately start the forward servo motor 9 or the reverse servo motor 10 to regulate air pressure. If the air pressure inside the car is too high, the controller 11 will control the forward servo motor 9 to accelerate, drawing air from the car to lower the air pressure. If the air pressure inside the car is too low, the controller 11 will control the reverse servo motor 10 to accelerate, blowing air into the car to increase the air pressure. Through the dynamic adjustment of the forward and reverse servo motors 9 and 10, a rapid balance of air pressure inside and outside the car is achieved, effectively ensuring passenger comfort while reducing the impact of air pressure shocks on the car structure and extending the elevator's service life. During summer use, due to staff using semiconductors... The thermoelectric cooler 13 is connected to the controller 11 for control. Therefore, when the controller 11 controls the motor, it also controls the thermoelectric cooler 13 to turn on. The thermoelectric cooler 13 pre-cools the air entering the heat exchange box 14 through the cooling tank 20. Combined with the efficient heat exchange function of the heat exchange fins 15, the air passing through can be cooled, preventing the high-temperature air from entering the car and further affecting the air pressure. This reduces the air to a suitable air pressure and temperature, making the users inside the car more comfortable. At the same time, in cold seasons such as winter, the electric heating wire 17 can assist in heating to ensure that the temperature of the air entering the car is not too low, meeting the comfort needs of passengers.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure-balanced high-speed elevator car ventilation device, comprising a fixed frame (1), characterized in that: A controller (11) is fixedly connected to the inner wall of the fixed frame (1). Two forward servo motors (9) and two reverse servo motors (10) are fixedly installed on the inner wall of the fixed frame (1). Each forward servo motor (9) and the reverse servo motor (10) is fixedly connected to a fan blade (12). A pressure sensor (16) is fixedly connected to the bottom surface of the fixed frame (1). A cooling tank (20) is opened on the inner wall of the fixed frame (1). A semiconductor cooling chip (13) is fixedly connected to the inner wall of the cooling tank (20). A heat exchange box (14) is fixedly connected to the inner wall of the fixed frame (1). A heat exchange fin (15) is fixedly connected to the inner wall of the heat exchange box (14). An electric heating wire (17) is fixedly connected to the inner wall of the fixed frame (1). The controller (11) is electrically connected to the pressure sensor (16), the forward servo motor (9), and the reverse servo motor (10) through wires.

2. The air pressure balanced high-speed elevator car ventilation device according to claim 1, characterized in that: The front and back of the fixed frame (1) are fixedly connected with positioning blocks (2), and each positioning block (2) has two positioning holes (3) on its upper surface.

3. The air pressure balanced high-speed elevator car ventilation device according to claim 1, characterized in that: The fixed frame (1) is provided with a filter plate (4) inside, and the outer surface of the filter plate (4) is slidably connected to the inner wall of the fixed frame (1).

4. The air pressure balanced high-speed elevator car ventilation device according to claim 3, characterized in that: The inner wall of the filter plate (4) is threaded with four bolts (7), and the bottom end of each bolt (7) is threaded to the inner wall of the fixing frame (1).

5. A pressure-balanced high-speed elevator car ventilation device according to claim 3, characterized in that: The upper surface of the filter plate (4) is fixedly connected to two fixing blocks (5), and each fixing block (5) has a pull ring (6) rotatably connected to its inner wall.

6. A pressure-balanced high-speed elevator car ventilation device according to claim 2, characterized in that: The bottom surfaces of the two positioning blocks (2) are fixedly connected to a sealing gasket (8), and the inner wall of the sealing gasket (8) is fixedly connected to the outer surface of the fixing frame (1).

7. The air pressure balanced high-speed elevator car ventilation device according to claim 1, characterized in that: The bottom surface of the fixed frame (1) is fixedly connected to four guide pipes (18), and the outer surface of each guide pipe (18) is fixedly connected to a one-way valve (19).

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