Anti-howling device for elevator

Abstract

The invention discloses an anti-howling device for an elevator. The anti-howling device comprises an elevator shaft and an air pipe. The air pipe is arranged on the inner wall of the elevator shaft and arranged in the extending direction of the elevator shaft, the two ends of the air pipe extend to the two ends of the elevator shaft, ventilation devices fixedly connected with the elevator shaft are arranged at the two ends of the air pipe correspondingly, and first air pressure monitoring devices are installed at the positions, located at the two ends of the air pipe, in the elevator shaft. An air pressure monitoring device II is arranged on the outer side of the bottom of the elevator shaft; the ventilation device, the first air pressure monitoring device and the second air pressure monitoring device are all electrically connected with the controller. The anti-howling device for the elevator is simple in structure, convenient to implement, capable of improving opening and closing of the elevator door and eliminating whistles of the elevator door slot, low in investment and remarkable in effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator shaft air exhaust and supply, in particular to an elevator anti-howling device. BACKGROUND

[0002] China has been in the forefront of the number of high-rise buildings built for many years in the world, and the continuous development of quantity and height makes the safety of high-rise buildings get more and more attention, but at present the construction industry pays more attention to the safety of high-rise buildings in the aspects of anti-seismic, fire fighting, evacuation, refuge and the like, and the safety problems caused by the chimney effect of high-rise buildings in non-fire conditions have not been paid enough attention, especially the problems of elevator door howling and opening and closing difficulty caused by the chimney effect of elevator shaft, which have attracted widespread attention.

[0003] During the operation of the elevator, the air in the elevator shaft is squeezed out or sucked in from the door gap, producing a loud howling noise, and the causes of elevator howling are as follows:

[0004] 1. Internal circulation of cold and hot air, resulting in positive and negative air pressure in the elevator shaft space;

[0005] 2. Air flow fluctuation caused by the upward and downward operation of the elevator, resulting in positive and negative air pressure in the elevator shaft space, affecting the operation of the elevator and the environment;

[0006] 3. The floor directly connected to the outside will have the problem of not being able to close the elevator door due to air flow entering the shaft;

[0007] 4. The floor directly connected to the outside will have the problem of howling caused by air flow entering the shaft from the elevator door gap.

[0008] Among the existing technologies for relieving the howling caused by the operation of the elevator in super high-rise buildings, passive measures such as increasing horizontal partitions and increasing the airtightness of the enclosure structure are mainly used, but these measures have little effect on the shuttle elevators in super high-rise buildings. The active measure of cooling the elevator shaft reduces the thermal pressure from the source and thus reduces the chimney effect, but the size of the thermal pressure is related to the change of the temperature difference between the inside and outside of the building, and the device for cooling the elevator shaft needs to be dynamically adjusted according to the change of the temperature difference, which is complex and unreliable.

[0009] Therefore, an elevator anti-howling device is proposed to solve the existing problems. SUMMARY

[0010] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned technologies and provide an elevator anti-howling device.

[0011] To solve the above-mentioned technical problems, the technical solution provided by the present application is an elevator anti-howling device: comprising an elevator shaft and an air pipe;

[0012] The air pipe is arranged on the inner wall of the elevator shaft and along the extension direction of the elevator shaft, two ends of the air pipe extend to two ends of the elevator shaft, and the two ends of the air pipe are respectively provided with ventilation devices fixedly connected with the elevator shaft, and air pressure monitoring devices one are arranged at the two ends of the air pipe in the elevator shaft, and air pressure monitoring devices two are arranged outside the bottom of the elevator shaft.

[0013] The ventilation device, the air pressure monitoring device one and the air pressure monitoring device two are electrically connected with the controller.

[0014] As an improvement, the ventilation device comprises an air inlet fan and an air outlet fan, the air inlet fan is arranged at the upper end of the air pipe, and the air outlet fan is arranged at the bottom end of the air pipe.

[0015] As an improvement, the air inlet fan and the air outlet fan are both variable frequency fans.

[0016] As an improvement, the air pipe is in a hollow thin structure with a rectangular cross section.

[0017] As an improvement, the air pipe is located on the side away from the elevator door in the elevator shaft.

[0018] As an improvement, the air pressure monitoring device two is located at a position corresponding to the opening height of the first floor of the elevator.

[0019] Compared with the prior art, the elevator anti-howling device has the following advantages:

[0020] 1. By arranging the air pipe and the ventilation device, the air flow circulation in the elevator shaft can be realized, the air pressure balance at two ends of the elevator shaft can be realized, the problem of cold air entering from the elevator door can be avoided, and the phenomenon of elevator howling can be improved.

[0021] 2. By the air pressure monitoring device, the real-time monitoring of the pressure difference in the elevator shaft with the real-time change of indoor and outdoor can be realized, the variable frequency operation of the elevator anti-howling device under the condition of the real-time change of the pressure difference in the elevator shaft with the real-time change of indoor and outdoor can be realized, and the purpose of ensuring the safe operation of the elevator can be achieved.

[0022] 3. The elevator anti-howling device has simple structure and convenient implementation, can improve the opening and closing of the elevator door, eliminate the whistling sound of the elevator door gap, has low investment and remarkable effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of an elevator anti-howling device.

[0024] As shown in the figure: 1, elevator shaft, 2, air pipe, 3, ventilation device, 31, air inlet fan, 32, air outlet fan, 4, air pressure monitoring device one, 5, air pressure monitoring device two, 6, controller, 7, elevator door, 8, car. DETAILED DESCRIPTION

[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some but not all of the embodiments of the application. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0026] In the description of the embodiments of the application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, they do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the embodiments of the application, "a plurality of" represents at least 2.

[0029] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] In combination with the drawings Figure 1 As shown in the drawings, an elevator anti-howling device includes an elevator shaft 1 and an air pipe 2, wherein the elevator shaft 1 is a prior art structure, the elevator anti-howling device is arranged in the existing elevator shaft 1, realizes frequency conversion operation of the elevator anti-howling device under the condition that the pressure difference in the elevator shaft 1 changes with the indoor and outdoor real-time, and ensures the safe operation of the elevator.

[0031] The air pipe 2 is arranged on the inner wall of the elevator shaft 1 and extends along the elevator shaft 1. In the embodiment, the air pipe 2 is arranged at a position away from the elevator door 7 in the elevator shaft 1, so that the air circulation in the elevator shaft 1 is achieved and the normal operation of the elevator car in the elevator shaft 1 is ensured.

[0032] The two ends of the air pipe 2 extend to the two ends of the elevator shaft 1. Specifically, the bottom end of the air pipe 2 is located below the first floor elevator opening, and the top end of the air pipe 2 is located above the top floor elevator opening.

[0033] Further, the air pipe 2 has a hollow thin structure in a rectangular cross section. The air pipe 2 is arranged in close contact with the inner wall of the elevator shaft 1. Meanwhile, the hollow thin structure of the air pipe 2 ensures the safe operation of the elevator and the ventilation volume, so that the normal operation of the anti-whistling device is ensured.

[0034] The two ends of the air pipe 2 are respectively provided with ventilation devices 3 fixedly connected with the elevator shaft 1. The ventilation devices 3 are arranged to achieve the air circulation at the two ends of the elevator shaft 1, so that the air pressure at the top and bottom of the elevator shaft 1 is balanced, and the problem of cold air entering through the elevator door is avoided.

[0035] Specifically, the ventilation device 3 includes an air inlet fan 31 and an air outlet fan 32. The air inlet fan 31 is arranged at the top end of the air pipe 2.

[0036] Similarly, in the implementation, the number of air inlet fans 31 can also be multiple. The multiple air inlet fans 31 are installed in segments according to the floors to ensure the air supply volume.

[0037] The air outlet fan 32 is arranged at the bottom end of the air pipe 2 to discharge the air in the air pipe 2, so that the air circulation at the two ends of the elevator shaft 1 is achieved.

[0038] Further, the air inlet fan 31 and the air outlet fan 32 are both variable frequency fans. In the implementation, the air pressure monitoring devices are used to monitor the air pressure inside and outside the elevator shaft 1, and the variable frequency fans are used to control the air supply volume.

[0039] Through the cooperation of the air inlet fan 31 and the air outlet fan 32, the air circulation at the two ends of the elevator shaft 1 is achieved, so that the air pressure of the elevator shaft 1 is balanced.

[0040] The air pressure monitoring device one 4 is installed at the two ends of the air pipe 2 in the elevator shaft 1, and the air pressure monitoring device two 5 is installed outside the bottom of the elevator shaft 1. Specifically, the air pressure monitoring device two 5 is located at a position corresponding to the height of the first floor elevator opening.

[0041] The air pressure monitoring device 4 and the air pressure monitoring device 5 can detect the air pressure at both ends of the elevator shaft 1 and the external air pressure to obtain the shaft pressure difference at the corresponding time, thereby controlling the ventilation device to work. This enables the elevator anti-whistling device to operate at a variable frequency under the condition that the pressure difference in the elevator shaft 1 changes with the real time between indoor and outdoor conditions, thus ensuring the safe operation of the elevator.

[0042] It also includes a controller 6, and the ventilation device 3, the air pressure monitoring device 4, and the air pressure monitoring device 5 are all electrically connected to the controller 6.

[0043] In specific implementation, the controller 6 pre-stores the fan operating frequency under different working conditions under different air pressure differences inside and outside the elevator shaft 1. After receiving the air pressure signal transmitted by the air pressure monitoring device, it processes and judges the signal and sends start, stop and frequency conversion control commands to the air intake fan 31 and the exhaust fan 32 respectively.

[0044] In a specific implementation of the present invention, the ventilation device 3 achieves airflow circulation within the elevator shaft 1 through the air duct 2. In this embodiment, the air intake fan 31 at the upper end of the air duct 2 draws hot air from the elevator shaft 1 into the air duct 2 and delivers it downward through the air duct 2. At the same time, the exhaust fan 32 at the lower end of the air duct 2 delivers the hot air from the air duct 2 to the lower part of the elevator shaft 1, thereby achieving airflow circulation within the elevator shaft 1 and preventing cold air from entering through the elevator door.

[0045] In practice, the controller 6 can also be incorporated into the building automation system to achieve control of the building automation system.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An elevator anti-whistling device, characterized in that: Includes elevator shaft (1) and air duct (2); The air duct (2) is installed on the inner wall of the elevator shaft (1) and along the extension direction of the elevator shaft (1). Both ends of the air duct (2) extend to both ends of the elevator shaft (1). Both ends of the air duct (2) are respectively provided with ventilation devices (3) that are fixedly connected to the elevator shaft (1). A first air pressure monitoring device (4) is installed at both ends of the air duct (2) in the elevator shaft (1), and a second air pressure monitoring device (5) is provided at the bottom outside of the elevator shaft (1). It also includes a controller (6), and the ventilation device (3), the first air pressure monitoring device (4) and the second air pressure monitoring device (5) are all electrically connected to the controller (6).

2. The elevator anti-whistling device according to claim 1, characterized in that: The ventilation device (3) includes an intake fan (31) and an exhaust fan (32). The intake fan (31) is located at the upper end of the air duct (2), and the exhaust fan (32) is located at the lower end of the air duct (2).

3. The elevator anti-whistling device according to claim 2, characterized in that: Both the intake fan (31) and the exhaust fan (32) are variable frequency fans.

4. The elevator anti-whistling device according to claim 1, characterized in that: The air duct (2) has a rectangular, hollow, thin structure.

5. An elevator anti-whistling device according to claim 1, characterized in that: The air duct (2) is located inside the elevator shaft (1) on the side away from the elevator door (7).

6. The elevator anti-whistling device according to claim 1, characterized in that: The second air pressure monitoring device (5) is located at the height corresponding to the elevator opening on the first floor.

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