A ventilation pressure regulating device for elevator shaft

Abstract

The present invention discloses an elevator shaft ventilation and pressure regulating device, comprising an upper ventilation and pressure regulating device installed at the upper part of the elevator shaft, a lower ventilation and pressure regulating device installed at the lower part of the elevator shaft, an air pressure monitoring device and a controller, wherein the air pressure monitoring device monitors the pressure in real time and converts the pressure data into a pressure signal and sends it to the controller, and the controller sends a control signal to the upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device through the pressure signal fed back by the air pressure monitoring device in real time, and the upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device control the ventilation area of ​​the vent according to the control signal to keep the pressure in the elevator shaft relatively constant; the air pressure monitoring device and the controller are connected by wire or wirelessly, and the upper ventilation and pressure regulating device, the lower ventilation and pressure regulating device and the controller are connected by wire or wirelessly; the pressure data is the actual average value of the pressure.

Description

[0001] This application is a divisional application of the invention patent application with application date of April 28, 2017, application number 2017102906160, and invention name “A ventilation and pressure regulating device for an elevator shaft”. Technical Field

[0002] The present invention relates to the technical field of elevators, and in particular to a ventilation and pressure regulating device for an elevator shaft. Background Art

[0003] An elevator is a vertical lift powered by an electric motor, used to transport people or goods within a multi-story building. With the rapid development of social economy and the continuous improvement of people's living standards, elevators have become an indispensable part of daily life.

[0004] The existing elevator shaft is usually a closed space, and the elevator car is installed inside the shaft. When the car goes up, due to the closed bottom of the elevator shaft, there is a suction force under the car, which increases the upward resistance of the car and wastes energy; on the other hand, due to the closed elevator shaft, the air flow inside the shaft is difficult, and it is easy for bacteria to breed in the air and produce odors. In addition, the ventilation device of the car will send the air in the shaft into the car, which greatly endangers people's health.

[0005] For example, the invention patent with Chinese patent number 201620998762.X, entitled "A deflector cover for a high-speed elevator", discloses a deflector cover with multiple deflectors. Although it can effectively reduce the wind resistance of the elevator car during operation, reduce noise, and protect the elevator car, it cannot replace the air in the elevator shaft, nor can it take effective measures to change the pressure in the shaft when the elevator is running. The elevator car may still shake when it is running.

[0006] Another example is the utility model patent No. 200920139076.7 in China, entitled "An Elevator Device with Automatic Ventilation", which discloses a ventilation system for an elevator shaft and a car, which can effectively ventilate the elevator shaft and the car, and when the elevator goes up, the negative pressure under the car is greatly reduced, which reduces the resistance of the elevator going up and reduces energy consumption. However, since it cannot detect the pressure and cannot control the size of the upper and lower vents, it is impossible to accurately maintain the stability of the pressure before and after the elevator runs. Summary of the invention

[0007] In view of this, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an elevator shaft ventilation and pressure regulating device, including an upper ventilation and pressure regulating device, a lower ventilation and pressure regulating device, an air pressure monitoring device and a controller. The controller sends a control signal through the pressure data fed back in real time by the air pressure monitoring device. The upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device control the ventilation area of ​​the vent according to the control signal to keep the pressure in the elevator shaft relatively constant, reduce noise, and reduce car shaking.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An elevator shaft ventilation and pressure regulating device comprises an upper ventilation and pressure regulating device installed at the upper part of the elevator shaft and a lower ventilation and pressure regulating device installed at the lower part of the elevator shaft, wherein the upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device are each composed of at least one vent, and the ventilation and pressure regulating device also comprises an air pressure monitoring device and a controller, wherein the air pressure monitoring device monitors the pressure in real time and converts the pressure data into a pressure signal and sends it to the controller, wherein the controller receives the pressure signal and sends a control signal to the upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device, wherein the upper ventilation and pressure regulating device and the lower ventilation and pressure regulating device control the ventilation area according to the control signal to maintain the relative constant pressure in the elevator shaft. When there is only one vent, the ventilation area is the area of ​​the open vent; when there are multiple vents, the ventilation area is the sum of the areas of the multiple open vents.

[0010] Preferably, the upper ventilation pressure regulating device and / or the lower ventilation pressure regulating device is composed of a plurality of ventilation openings. A plurality of ventilation openings forming a ventilation pressure regulating device can more conveniently control the ventilation area of ​​the ventilation openings.

[0011] In some embodiments, the cross-sections of the multiple vents are the same and are arranged in a rectangular manner. A movable cover plate that moves in coordination with the multiple vents is provided on the inner side or the outer side of the vents. The upper ventilation pressure regulating device and the lower ventilation pressure regulating device move the corresponding movable cover plates according to the control signal sent by the controller, and open a corresponding number of the vents to maintain a relatively constant pressure in the elevator shaft.

[0012] In other embodiments, the cross-sections of the multiple vents are different, and the multiple vents are arranged in a circle clockwise or counterclockwise according to the size of the cross-sectional area. A rotating cover plate that rotates in coordination with the multiple vents is provided on the inner side or the outer side of the vents. The upper ventilation pressure regulating device and the lower ventilation pressure regulating device rotate the corresponding rotating cover plates according to the control signal sent by the controller, and the rotating cover plates rotate to open the vents of the corresponding cross-section to maintain a relatively constant pressure in the elevator shaft.

[0013] Preferably, the rotating cover plate is circular and has a notch matching the vent, and the center of the rotating cover plate coincides with the center of a circle formed by the arrangement of the plurality of vents.

[0014] More preferably, the angle formed by the line connecting the centers of two adjacent vents and the center of the rotating cover is the same, and the notch is a fan-shaped notch, and the angle of the fan-shaped notch is equal to the angle. Such a setting can maximize the use of the fan-shaped notch.

[0015] Further preferably, the cross-section of the vent is selected from one or more of a circle, a triangle, a rectangle, a rhombus, a pentagon, and a five-pointed star.

[0016] Preferably, the air pressure monitoring device comprises a first air pressure monitoring device and a second air pressure monitoring device, the first air pressure monitoring device is installed at the upper part of the elevator shaft, and the second air pressure monitoring device is installed at the lower part of the elevator shaft.

[0017] More preferably, an elevator car is installed in the elevator shaft, the first air pressure monitoring device is installed on the upper part of the elevator car, and the second air pressure monitoring device is installed on the lower part of the elevator car. Such an arrangement can enable the air pressure monitoring device to measure the value more accurately, and the ventilation pressure regulating device to respond more quickly.

[0018] Preferably, an air filter is installed on the vent to ensure the freshness and hygiene of the air in the elevator shaft.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the controller in the elevator shaft ventilation pressure regulating device of the present invention sends a control signal through the pressure data fed back in real time by the air pressure monitoring equipment, and the upper ventilation pressure regulating device and the lower ventilation pressure regulating device control the ventilation area of ​​the vent according to the control signal to keep the pressure in the elevator shaft relatively constant, effectively reducing noise, reducing car shaking, and increasing the overall safety of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side schematic diagram of the elevator shaft ventilation pressure regulating device in Example 1;

[0021] Figure 2 It is a front view of the vent in the upper ventilation pressure regulating device in the first embodiment;

[0022] Figure 3 It is a front view of the upper ventilation pressure regulating device in the first embodiment;

[0023] Figure 4 It is a front view of the lower ventilation pressure regulating device in the first embodiment;

[0024] Figure 5 It is a side schematic diagram of the elevator shaft ventilation pressure regulating device in the second embodiment;

[0025] Among them: elevator shaft-1, elevator car-2, upper ventilation pressure regulating device-3, rotating cover plate-31, fan-shaped notch-311, lower ventilation pressure regulating device-4, movable cover plate-41, vent-5, first air pressure monitoring equipment-61, second air pressure monitoring equipment-62. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Embodiment 1

[0028] like Figure 1-4 As shown, an elevator shaft ventilation and pressure regulating device of the present invention comprises an upper ventilation and pressure regulating device 3 installed at the upper part of the elevator shaft 1, a lower ventilation and pressure regulating device 4 installed at the lower part of the elevator shaft 1, an air pressure monitoring device and a controller (not shown). The upper ventilation and pressure regulating device 3 and the lower ventilation and pressure regulating device 4 can both realize the functions of exhaust and air intake. The air pressure monitoring device comprises a first air pressure monitoring device 61 installed at the upper part of the elevator shaft 1 and a second air pressure monitoring device 62 installed at the lower part of the elevator shaft 1. The air pressure monitoring device is connected to the controller by wire or wireless means, and the upper ventilation and pressure regulating device 3, the lower ventilation and pressure regulating device 4 are connected to the controller by wire or wireless means.

[0029] The first air pressure monitoring device 61 monitors the pressure in real time and converts the pressure data into a first pressure signal and sends it to the controller. The controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device 3. The upper ventilation pressure regulating device 3 controls the size of the ventilation area according to the first control signal to maintain the relative constant pressure in the upper part of the elevator shaft 1; the second air pressure monitoring device 62 monitors the pressure in real time and converts the pressure data into a second pressure signal and sends it to the controller. The controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device 4. The lower ventilation pressure regulating device 4 controls the size of the ventilation area according to the second control signal to maintain the relative constant pressure in the lower part of the elevator shaft 1. In this embodiment, the cross section of the vent 5 is preferably circular, and an air filter device is installed on the vent 5 to ensure the freshness and hygiene of the air in the elevator shaft 1. The ventilation area is the sum of the areas of the multiple vents 5 that are opened.

[0030] The upper ventilation pressure regulating device 3 and the lower ventilation pressure regulating device 4 of the present embodiment are both composed of a plurality of vents 5. The cross-sections of the plurality of vents 5 of the upper ventilation pressure regulating device 3 are different. The plurality of vents 5 are arranged clockwise or counterclockwise to form a circle according to the size of the cross-sectional area. A rotating cover plate 31 that rotates in coordination with the plurality of vents 5 is provided on the inner or outer side of the vents 5. The upper ventilation pressure regulating device 3 rotates the rotating cover plate 31 according to the first control signal sent by the controller. The rotating cover plate 31 rotates to open the vents 5 of the corresponding cross-section to maintain the relative constancy of the upper pressure of the elevator shaft 1. The rotating cover plate 31 is circular and has a fan-shaped notch 311. The center of the rotating cover plate 31 coincides with the center of the circle formed by the arrangement of the plurality of vents 5. The angle formed by the line connecting the center of the circle of two adjacent vents 5 and the center of the rotating cover plate 31 is the same. The opening angle of the fan-shaped notch 311 is equal to the said angle. Such a setting can maximize the use of the fan-shaped notch 311. Figure 3 As shown, the arrow direction in the figure is the rotatable direction of the rotating cover plate 31. When the ventilation area needs to be increased, the rotating cover plate 31 is rotated clockwise or counterclockwise to rotate the fan-shaped notch 311 to open the ventilation hole 5 with a larger cross-section. When the ventilation area needs to be reduced, the rotating cover plate 31 is rotated clockwise or counterclockwise to rotate the fan-shaped notch 311 to the ventilation hole 5 with a smaller cross-section. The cross-sections of the multiple ventilation holes 5 of the lower ventilation pressure regulating device 4 are the same and are arranged in a rectangular manner. The inner side or the outer side of the ventilation hole 5 is provided with a movable cover plate 41 that moves in coordination with the multiple ventilation holes 5. The lower ventilation pressure regulating device 4 moves the movable cover plate 41 according to the second control signal sent by the controller, and opens the corresponding number of ventilation holes 5 to maintain the relative constant pressure in the lower part of the elevator shaft 1, as shown in FIG. Figure 4As shown, the direction of the arrow in the figure is the movable direction of the movable cover 41. When the ventilation area needs to be increased, the movable cover 41 moves to the right to open a larger number of vents 5. When the ventilation area needs to be reduced, the movable cover 41 moves to the left to close the number of vents 5.

[0031] When the elevator car 2 goes up, the first air pressure monitoring device 61 installed on the upper part of the elevator shaft 1 detects that the pressure increases, and converts the actual average value of the pressure into a first pressure signal and sends it to the controller. The controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device 3. The upper ventilation pressure regulating device 3 rotates the rotating cover plate 31 to the vent 5 with a larger cross-section according to the first control signal, so that the air in the upper part of the elevator shaft 1 is quickly discharged. As the internal air is discharged, the pressure difference in the upper part of the elevator shaft 1 gradually decreases, and the rotating cover plate 31 gradually rotates the fan-shaped notch 311 to the position of the vent 5 with a smaller cross-section to maintain the upper pressure in the elevator shaft 1. The force is relatively constant; the second air pressure monitoring device 62 installed in the lower part of the elevator shaft 1 detects the pressure drop, and converts the actual average value of the pressure into a second pressure signal and sends it to the controller, the controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device 4, the lower ventilation pressure regulating device 4 moves the movable cover plate 41 to the right according to the second control signal to open a larger number of vents 5, so that the outside air quickly enters the lower part of the elevator shaft 1, with the entry of outside air, the pressure difference in the lower part of the elevator shaft 1 gradually decreases, the movable cover plate 41 gradually moves to the left, and the number of vents 5 is gradually closed to maintain the relative constancy of the pressure in the lower part of the elevator shaft 1.

[0032] Similarly, when the elevator car 2 goes down, the first air pressure monitoring device 61 installed on the upper part of the elevator shaft 1 detects that the pressure is reduced, and converts the actual average value of the pressure into a first pressure signal and sends it to the controller. The controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device 3. The upper ventilation pressure regulating device 3 rotates the rotating cover plate 31 to open the vent 5 with a larger cross section according to the first control signal, so that the outside air quickly enters the upper part of the elevator shaft 1. With the entry of the outside air, the pressure difference in the upper part of the elevator shaft 1 gradually decreases, and the rotating cover plate 31 gradually rotates the fan-shaped notch 311 to the position of the vent 5 with a smaller cross section to maintain the upper part of the elevator shaft 1. The lower pressure of the elevator shaft 1 is relatively constant; the second air pressure monitoring device 62 installed in the lower part of the elevator shaft 1 detects the pressure increase, and converts the actual average value of the pressure into a second pressure signal and sends it to the controller, the controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device 4, the lower ventilation pressure regulating device 4 moves the movable cover plate 41 to the right according to the second control signal to open a larger number of vents 5, so that the air in the lower part of the elevator shaft 1 can be quickly discharged, and as the internal air is discharged, the pressure difference in the lower part of the elevator shaft 1 gradually decreases, the movable cover plate 41 gradually moves to the left, and the number of vents 5 is gradually closed to maintain the relative constancy of the lower pressure in the elevator shaft 1.

[0033] Embodiment 2

[0034] The elevator shaft ventilation pressure regulating device of this embodiment is basically the same as the first embodiment, except that the air pressure monitoring device of this embodiment includes a first air pressure monitoring device 61 installed on the upper part of the elevator car 2 and a second air pressure monitoring device 61 installed on the lower part of the elevator car 2. Such a setting can make the air pressure monitoring device measure the value more accurately, and the ventilation pressure regulating device can respond more quickly.

[0035] In a specific implementation application, the cross-section of the vent can be selected from one or more combinations of circular, triangular, rectangular, rhombus, pentagonal or pentagram shapes.

[0036] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator shaft ventilation pressure regulating device, characterized in that: It comprises an upper ventilation pressure regulating device installed at the upper part of the elevator shaft, a lower ventilation pressure regulating device installed at the lower part of the elevator shaft, an air pressure monitoring device and a controller, the air pressure monitoring device monitors the pressure in real time and converts the pressure data into a pressure signal and sends it to the controller, the controller sends a control signal to the upper ventilation pressure regulating device and the lower ventilation pressure regulating device through the pressure signal fed back in real time by the air pressure monitoring device, the upper ventilation pressure regulating device and the lower ventilation pressure regulating device control the ventilation area of ​​the vent according to the control signal to keep the pressure in the elevator shaft relatively constant; the air pressure monitoring device is connected to the controller by wire or wireless means, and the upper ventilation pressure regulating device, the lower ventilation pressure regulating device and the controller are connected by wire or wireless means; the pressure data is the actual average value of the pressure; The air pressure monitoring device comprises a first air pressure monitoring device and a second air pressure monitoring device; the first air pressure monitoring device is installed at the upper part of the elevator shaft, and the second air pressure monitoring device is installed at the lower part of the elevator shaft; And / or, an elevator car is installed in the elevator shaft, the first air pressure monitoring device is installed on the upper part of the elevator car, and the second air pressure monitoring device is installed on the lower part of the elevator car; The first air pressure monitoring device monitors the pressure in real time and converts the pressure data into a first pressure signal and sends it to the controller, the controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device, and the upper ventilation pressure regulating device controls the size of the ventilation area according to the first control signal to maintain a relatively constant pressure on the upper part of the elevator shaft; The second air pressure monitoring device monitors the pressure in real time and converts the pressure data into a second pressure signal and sends it to the controller, the controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device, and the lower ventilation pressure regulating device controls the size of the ventilation area according to the second control signal to maintain a relatively constant pressure in the lower part of the elevator shaft; When the upper ventilation pressure regulating device and / or the lower ventilation pressure regulating device is composed of one vent, the ventilation area is the area of ​​the opened vent; When the upper ventilation pressure regulating device and / or the lower ventilation pressure regulating device is composed of a plurality of the ventilation openings, the ventilation area is the sum of the areas of the plurality of opened ventilation openings; The cross sections of the plurality of vents are the same and are arranged in a rectangular manner. A movable cover plate is provided on the inner side or the outer side of the vents to move in coordination with the plurality of vents. The upper ventilation pressure regulating device and the lower ventilation pressure regulating device move the corresponding movable cover plates according to the control signal sent by the controller, and open the corresponding number of vents to maintain a relatively constant pressure in the elevator shaft. The cross sections of the plurality of vents are different, and the plurality of vents are arranged clockwise or counterclockwise to form a circle according to the size of the cross-sectional area. A rotating cover plate that rotates in coordination with the plurality of vents is provided on the inner side or the outer side of the vents. The upper ventilation pressure regulating device and the lower ventilation pressure regulating device rotate the corresponding rotating cover plate according to the control signal sent by the controller. The rotating cover plate rotates to open the vents of the corresponding cross section to maintain a relatively constant pressure in the elevator shaft. When the elevator car goes upward, the first air pressure monitoring device detects that the pressure increases, and converts the actual average value of the pressure into a first pressure signal and sends it to the controller. The controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device. The upper ventilation pressure regulating device rotates the rotating cover plate to the vent with a larger cross section according to the first control signal, so that the pressure difference in the upper part of the elevator shaft is gradually reduced, and the rotating cover plate gradually rotates the fan-shaped notch to the position of the vent with a smaller cross section to maintain the upper pressure in the elevator shaft relatively constant; The second air pressure monitoring device detects a pressure drop, and converts the actual average value of the pressure into a second pressure signal and sends it to the controller. The controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device. The lower ventilation pressure regulating device moves the movable cover plate to the right according to the second control signal to open a larger number of vents, so that the pressure difference in the lower part of the elevator shaft is gradually reduced, and the movable cover plate gradually moves to the left, gradually closing the number of vents to maintain a relatively constant pressure in the lower part of the elevator shaft; When the elevator car goes down, the first air pressure monitoring device detects that the pressure decreases, and converts the actual average value of the pressure into a first pressure signal and sends it to the controller. The controller receives the first pressure signal and sends a first control signal to the upper ventilation pressure regulating device. The upper ventilation pressure regulating device rotates the rotating cover plate to open the vent with a larger cross section according to the first control signal, so that the pressure difference in the upper part of the elevator shaft is gradually reduced, and the rotating cover plate gradually rotates the fan-shaped notch to the position of the vent with a smaller cross section to maintain the upper pressure in the elevator shaft relatively constant; The second air pressure monitoring device detects the pressure increase and converts the actual average value of the pressure into a second pressure signal and sends it to the controller. The controller receives the second pressure signal and sends a second control signal to the lower ventilation pressure regulating device. The lower ventilation pressure regulating device moves the movable cover to the right according to the second control signal to open a larger number of vents, so that the pressure difference in the lower part of the elevator shaft gradually decreases, and the movable cover gradually moves to the left, gradually closing the number of vents to maintain the relative constancy of the lower pressure in the elevator shaft.

2. An elevator shaft ventilation pressure regulating device according to claim 1, characterized in that: The rotating cover plate is circular and has a notch matching the vents, and the center of the rotating cover plate coincides with the center of a circle formed by the arrangement of the plurality of vents.

3. An elevator shaft ventilation pressure regulating device according to claim 2, characterized in that: The angles formed by the lines connecting the centers of two adjacent vents and the center of the rotating cover are the same, and the notch is a fan-shaped notch, and the angle of the fan-shaped notch is equal to the angle.

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