CN215523594U - Elevator shaft ventilation device and elevator system - Google Patents
Elevator shaft ventilation device and elevator system Download PDFInfo
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- CN215523594U CN215523594U CN202122295195.5U CN202122295195U CN215523594U CN 215523594 U CN215523594 U CN 215523594U CN 202122295195 U CN202122295195 U CN 202122295195U CN 215523594 U CN215523594 U CN 215523594U
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Abstract
The utility model provides an elevator shaft ventilation device and an elevator system, which comprise a shaft body with a ventilation opening, a ventilation window arranged at the ventilation opening, a driving piece for driving the ventilation window to open and close, a weather sensor for detecting whether the weather is severe weather or not and a temperature sensor for detecting the temperature inside the shaft body, wherein the weather sensor is arranged at the outer top of the shaft body, the temperature sensor is arranged inside the shaft body, and the driving piece drives the ventilation window to open and close according to the detection information of the weather sensor and the temperature sensor. According to the elevator shaft ventilation device and the elevator system, the driving piece can automatically push the ventilation window open, so that the inside of the shaft body is quickly ventilated, and the phenomenon that the performance of each part of an elevator is influenced due to overhigh temperature in the shaft body is avoided. Compared with an exhaust fan, in the ventilation process, energy consumption is not needed all the time, energy consumption is generated only when the ventilation window is pushed, meanwhile, window opening under the condition of good weather can be guaranteed, and rainwater, sand and dust and the like can be prevented from entering the inside of the well body.
Description
Technical Field
The utility model belongs to the technical field of elevators, and particularly relates to an elevator shaft ventilation device and an elevator system.
Background
At present, an elevator shaft is additionally arranged in an existing house, and in order to solve the illumination problem, a steel shaft structure and a toughened glass curtain wall are additionally adopted, so that the shaft is poor in ventilation and heat dissipation. At present, ventilation and heat dissipation of a hoistway are mostly realized by adopting exhaust fans at the upper end and the lower end of the hoistway, but the effect is not obvious, and the exhaust fans are usually in a long-term operation state and have high energy consumption; when the elevator is under the outage state, the elevator well is equivalent to an airtight space, during high temperature weather, the temperature can be very high in the well to can influence elevator car internal temperature, influence the comfort of taking advantage of the terraced personnel, when the elevator breaks down and needs to overhaul, because of the well high temperature, the potential safety hazards such as chest distress, faint probably appear to the maintainer, well high temperature simultaneously, also influential to the performance of each part of elevator, ageing of spare parts such as each plastics class and cable with higher speed, influence elevator part life and so on.
Disclosure of Invention
The embodiment of the utility model aims to provide an elevator shaft ventilation device to solve the technical problems of poor heat dissipation and high energy consumption of an elevator shaft in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an elevator well ventilation unit, including the well body that has the vent, locate vent, the drive of vent department the driving piece of vent switch, be used for detecting whether be the weather sensor of bad weather and be used for detecting the temperature sensor of the inside temperature of well body, weather sensor locates the top of well body, temperature sensor locates the inside of well body, wherein, the driving piece basis weather sensor temperature sensor's detection information drive the vent switch.
In one embodiment, the number of the weather sensors is multiple, and the multiple weather sensors are connected in parallel.
In one embodiment, the number of the temperature sensors is plural, and the plural temperature sensors are connected in parallel.
In one embodiment, the ventilation window is plug-type ventilation window or flat-open type ventilation window, flat-open type ventilation window with be provided with between the well body and be used for restricting flat-open type ventilation window opens the angle locating part of angle, flat-open type ventilation window is relative the well body is outwards opened.
In one embodiment, the outer wall of the ventilation window and/or the outer wall of the hoistway body are provided with a solar panel, and the elevator hoistway ventilation device further comprises an energy storage device electrically connected with the solar panel, and the energy storage device is electrically connected with the driving member.
In one embodiment, the energy storage device is located inside the drive member.
In one embodiment, the driving member is an air cylinder or a hydraulic cylinder, the housing of the driving member is fixed to the hoistway body, and the moving end of the driving member is fixed to the ventilation window.
In one embodiment, a hand pulling piece which is convenient to push and pull manually is arranged on the ventilating window.
In one embodiment, a gauze for plugging the ventilation opening is arranged at the ventilation opening.
The utility model also provides an elevator system which comprises the elevator hoistway ventilation device and a car, wherein the car and the hoistway body are lifted and descended.
The elevator shaft ventilation device and the elevator system provided by the utility model have the beneficial effects that: compared with the prior art, the elevator well ventilation device comprises a well body, a ventilation window, a driving piece, a weather sensor and a temperature sensor, wherein when the weather sensor detects severe weather such as rain, wind, hail, sand storm and the like and the temperature sensor reaches a preset temperature, the driving piece can automatically push the ventilation window open, so that the inside of the well body is quickly ventilated, and the phenomenon that the performance of each part of an elevator is influenced due to overhigh temperature in the well body is avoided. Compared with an exhaust fan, in the ventilation process, energy consumption is not needed all the time, energy consumption is generated only when the ventilation window is pushed, meanwhile, window opening under the condition of good weather can be guaranteed, and rainwater, sand and dust and the like can be prevented from entering the inside of the well body.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a first perspective view of a ventilation apparatus for an elevator shaft according to an embodiment of the present invention;
fig. 2 is a second perspective view of a ventilation apparatus for an elevator shaft according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a side view of an elevator hoistway ventilation apparatus provided by an embodiment of the present invention;
fig. 5 is a top view of an elevator hoistway ventilation apparatus provided by an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-a well body; 11-a frame structure; 13-a vent; 14-a window frame; 2-a ventilation window; 3-a driving member; 4-an energy storage device; 5-a weather sensor; 6-temperature sensor; 7-hand pulling piece.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless specifically defined otherwise.
The elevator shaft supplies the elevator to go up and down to use, and in order to guarantee the installation nature of elevator operation, its leakproofness is stronger usually, leads to the inside heat dissipation of being difficult to of elevator shaft, and the temperature is higher, can influence the inside temperature of elevator car even. Especially, in elevator shafts in houses, steel frame structures and toughened glass curtain walls are mostly adopted to form the elevator shafts, so that heat is easily collected in the elevator shafts. In order to ventilate and radiate heat, an exhaust fan is mostly adopted, but the ventilation efficiency of the heat radiation measures is too low, and when the exhaust fan is adopted, the exhaust fan runs for a long time, and the energy consumption is higher. Especially, when the elevator is stopped, the inside of the elevator shaft is equivalent to a closed space, and the heat inside the elevator shaft is difficult to dissipate, so that the temperature in the elevator car is influenced, and the comfort of elevator passengers is influenced. When the elevator breaks down and needs to be overhauled, potential safety hazards such as chest distress and fainting can appear to the maintainer because of well high temperature, and well high temperature also has an influence to the performance of each part of elevator simultaneously, and spare parts such as each plastics class and cable are ageing with higher speed, influence elevator part life and so on. Therefore, the ventilation and heat dissipation device for the elevator shaft is designed, and the problems of poor heat dissipation and high energy consumption of the elevator shaft are solved.
A description will now be given of an elevator shaft ventilation apparatus according to an embodiment of the present invention. The elevator car is arranged in the elevator shaft and ascends and descends in the elevator shaft.
Referring to fig. 1 to 3 together, the elevator shaft ventilation apparatus includes a shaft body 1, a ventilation window 2, a driving member 3, a weather sensor 5, and a temperature sensor 6.
The shaft body 1 is provided with a ventilation opening 13 for ventilation. The ventilation window 2 is arranged at the ventilation opening 13, when the ventilation window 2 is closed, the ventilation opening 13 is in a closed state, the inside and the outside of the hoistway body 1 cannot be communicated, and ventilation cannot be performed at the moment; when the ventilation window 2 is opened, the ventilation opening 13 is in an open state, the inside and the outside of the hoistway body 1 are communicated with each other, and ventilation can be performed at this time.
The driving piece 3 is used for driving the ventilation window 2 to move, so that the ventilation window 2 can be automatically opened and closed. The ventilation window 2 is free from manual control, can be automatically opened for ventilation under the conditions of weather, temperature and the like, and can be automatically closed when the conditions of weather, temperature and the like are not met, and compared with an exhaust fan, the required energy consumption is low.
The weather sensor 5 is arranged at the outer top of the well body 1, and can detect rain, hail, sand storm, lightning thunder and the like in time when the weather sensor is severe, so that the weather condition can be judged. Wherein, the outer top of well body 1 includes the top surface of well body 1 and the side of well body 1 is close to the top surface department. Weather sensor 5 and driving piece 3 electric connection to in time feed back the weather condition who detects to driving piece 3. The weather sensor 5 can be one or more of a raindrop sensor, a sound sensor and a pressure sensor, and when the weather sensor 5 comprises the above sensors, the sensors are connected in parallel, that is, when one of the weather conditions occurs, the weather can be detected. The raindrop sensor can detect whether rain or snow falls; the sound sensor can detect thunderstorm weather; the pressure sensor can detect weather such as snowing, hail and sand storm.
In severe weather such as rainy weather, snowy weather, and sand storm, opening the louver 2 may cause rainwater, snow water, and sand to enter the inside of the hoistway body 1, and may damage the elevator hoisting mechanism, and therefore, in severe weather, the louver 2 cannot be opened. In addition, the temperature in winter is lower, especially in the north, in order to guarantee the inside comparatively suitable temperature of well body 1, also is not suitable for opening ventilation window 2 and ventilates. Therefore, the louver 2 is kept in the closed state on rainy days or at low temperatures. That is, when the weather sensor 5 detects that the weather is good and the temperature sensor 6 detects that the temperature reaches a predetermined temperature, the driving member 3 pushes the ventilation window 2 to be opened, so that the hoistway body 1 is ventilated; in other cases, the louvers 2 are all in the closed state. It will be appreciated that the above described operation is only a preferred embodiment, and that other modes of operation may be provided depending on the specific situation, for example, in winter in the south, allowing the opening of the ventilation window 2, etc., and that the specific mode of operation may be provided in the control system of the elevator according to specific needs, or a control module may be provided separately.
Elevator well ventilation unit in above-mentioned embodiment, including well body 1, ventilation window 2, driving piece 3, weather sensor 5 and temperature sensor 6, when weather sensor 5 detected weather well, and when temperature sensor 6 reached predetermined temperature, driving piece 3 can push away ventilation window 2 automatically, made the inside quick ventilation of well body 1, avoided the inside high temperature of well body 1 and influence the performance of each part of elevator. Compared with an exhaust fan, in the ventilation process, energy consumption is not needed all the time, energy consumption is generated only when the ventilation window 2 is pushed, meanwhile, window opening under the condition of good weather can be guaranteed, and rainwater and sand can be prevented from entering the inside of the hoistway body 1.
In one embodiment of the present invention, referring to fig. 1 and 2, the hoistway body 1 is in a shaft shape, and the cross section of the hoistway body 1 may be rectangular, similar to the cross section structure of an elevator car. The well body 1 includes frame construction 11 and glass curtain wall, and frame construction 11 includes interconnect's crossbeam and longeron, and frame construction 11 can be made by steel to guarantee the bulk strength of well body 1. The glass curtain wall is embedded in the frame structure 11 to make the hoistway body 1 in a closed shape.
Wherein, well body 1 can set up window frame 14 in vent 13 department, and the inner circle of window frame 14 or the outer lane of ventilation window 2 are provided with the sealing strip, can prevent rainwater, mosquito etc. and get into in well body 1 on the one hand, on the other hand can reduce the impulsive force of switch ventilation window 2, and the impulsive force is too big when preventing to open the window and close the window and leads to ventilation window 2 to damage.
In one embodiment of the present invention, referring to fig. 2 and 4, the ventilation window 2 is a casement ventilation window, which can be opened outwards without affecting the operation space of the elevator car inside the hoistway body 1. Moreover, the opening angle of the ventilating window 2 can be controlled, so that the safety of an elevator shaft can be ensured while the ventilating area is ensured.
The casement ventilation can be a sliding casement window and an upper-hung casement window. The rotating shaft of the sliding casement window is positioned at the side edge of the sliding casement window, and the rotating shaft of the upper hung casement window is positioned at the top edge of the sliding casement window, so that the opening angle of the sliding casement window or the upper hung casement window can be controlled.
Optionally, an angle limiting member is arranged between the casement ventilation window and the hoistway body 1, and the angle limiting member is used for limiting the opening angle of the casement ventilation window. The angle locating part includes gag lever post and stop cock, and the one end of gag lever post is rotated and is connected in vent 13 department, has seted up the bar hole on the gag lever post, and the stop cock is fixed in ventilation window 2, and the stop cock sets up in stretching into the bar hole. Like this, when opening flat-open ventilation window, the spacing bolt slides in the bar hole, and when the spacing bolt slided to the tip in bar hole, then flat-open ventilation window opened to extreme position.
Optionally, the opening angle of the casement ventilation window is 20 to 45 degrees. When the opening angle of the casement type ventilation window is too large, although the ventilation area is large, safety risks may be caused, such as falling from high altitude and the like, and an overlarge external space is also occupied. When the opening angle of the casement type ventilation window is too small, the ventilation area is too small, and the function of rapid heat dissipation can not be achieved. Therefore, the opening angle of the casement ventilation window is set to 20 to 45 degrees, such as 30 degrees, 35 degrees, 40 degrees, and the like.
In other embodiments, the ventilation window 2 may also be a push-pull ventilation window, which may be pushed or pulled left and right or up and down. The push-pull type ventilation window occupies a large area, at least two windows need to be arranged, but the area occupied by one window can be opened at most.
In one embodiment of the present invention, the ventilation opening 13 is provided with a gauze which can prevent mosquitoes, rats, ants and the like from entering the inside of the hoistway body 1, so that the inside of the hoistway body 1 can be kept clean. Optionally, each side edge of the gauze is correspondingly fixed at the inner wall of the ventilation opening 13, that is, the gauze is fixedly arranged relative to the hoistway body 1; or, the gauze is rolling type gauze, can control the rolling or roll up and down, when needs are manually opened ventilation window 2, can push ventilation window 2 open again after rolling the screen window.
In one embodiment of the present invention, referring to fig. 3, a handle 7 is disposed on the ventilation window 2, and the handle 7 is disposed to facilitate the manual pulling of the ventilation window 2. The hand piece 7 may be a handle, a cord, or the like that is easily gripped. For example, when the louver 2 is a flat-push type louver, the louver 2 may be opened by manually pushing the pull 7 outward, or the louver 2 may be closed by pulling inward.
In one embodiment of the present invention, referring to fig. 1, the elevator shaft ventilation device further includes an energy storage device 4, the energy storage device 4 is used for storing electric energy, and the energy storage device 4 is electrically connected with the driving member 3 to provide energy for the driving member 3. The outer wall of ventilation window 2 is provided with solar panel, solar panel and energy memory 4 electric connection. When the illumination is sufficient, the solar panel absorbs the solar energy and converts the solar energy into electric energy to be stored in the energy storage device 4. This enables the energy storage means 4 to control the drive member 3 by the stored electrical quantity even when the lighting is insufficient. The energy storage means 4 may be selected as a battery.
In other embodiments, a solar panel is disposed on an outer wall of the hoistway body 1, and the solar panel is electrically connected to the energy storage device 4. Specifically, the side wall of the hoistway body 1 and/or the top wall of the hoistway body 1 are provided with solar panels. When the illumination is sufficient, the solar panel absorbs the solar energy and converts the solar energy into electric energy to be stored in the energy storage device 4. The area of well outer wall is great, can design the solar panel of corresponding size according to the demand of power consumption. When enough solar panels are arranged on the outer wall of the hoistway body 1, the energy stored by the energy storage device 4 can be used by other electric components of the elevator.
In other embodiments, the outer wall of the hoistway body 1 and the outer wall of the ventilation window 2 are both provided with solar panels, the solar panels at the above positions are both electrically connected with the energy storage device 4, and the solar panels absorb solar energy and convert the solar energy into electric energy to be stored in the energy storage device 4.
In one embodiment of the present invention, referring to fig. 1, the energy storage device 4 is disposed near the driving member 3, so that the connection cable between the energy storage device 4 and the driving member 3 is shorter, and the energy storage device 4 can supply power to the driving member 3 more conveniently. In other embodiments, the energy storage device 4 is disposed inside the driving member 3, so that the driving member 3 has both charging and discharging functions. In other embodiments, the energy storage device 4 is fixed to an outer wall of the driving member 3, the outer wall of the driving member 3 is provided with a first electrical connector, the energy storage device 4 is provided with a second electrical connector electrically connected with the first electrical connector, and the first electrical connector and the second electrical connector can be in contact conduction or plug-in conduction.
In one embodiment of the present invention, the elevator shaft ventilation device further includes an electric control board, the driving member 3, the weather sensor 5, and the temperature sensor 6 are electrically connected to the electric control board, signals detected by the weather sensor 5 and the temperature sensor 6 are fed back to the electric control board, and the electric control board controls the movement of the driving member 3 through the feedback signal. In one embodiment, the electric control board is disposed outside the driving member 3, and in another embodiment, the electric control board is disposed inside the driving member 3, the driving member 3 has a circuit board for controlling the movement of the moving end thereof, and the electric control board and the circuit board may be the same component, i.e., the circuit on the electric control board and the circuit on the circuit board are integrated on the same board.
In one embodiment of the present invention, referring to fig. 3, the driving member 3 is fixed at the vent 13, and the moving end of the driving member 3 pushes the louver 2 to open or close the louver 2. The driving member 3 may be a linear motor, a cylinder, or the like, which is capable of outputting linear motion. For example, the driving member 3 is a cylinder, the housing of the cylinder is fixed at the vent 13, for example, on the window frame 14 of the vent 13, and the moving end of the cylinder is fixed on the louver 2, so that the moving end of the cylinder is extended to open the louver 2, and the moving end of the cylinder is retracted to close the louver 2.
In one embodiment of the present invention, the ventilation port 2 is provided in plural, and the ventilation port 2 may be provided in a side wall or a top wall of the hoistway body 1. Both opposite side walls of the hoistway body 1 may be provided with louvers 2 so that the louvers 2 of the two opposite side walls form a convection. Optionally, the ventilation windows 2 on the two opposite side walls are arranged completely opposite to each other, so that the air convection area is larger; or, the ventilation windows 2 on the two opposite side walls are staggered up and down, but at least part of the ventilation windows are arranged oppositely, so that the two oppositely-opened ventilation windows 2 can also form partial convection; alternatively, the ventilation windows 2 on the two opposite side walls are completely staggered up and down, so that more air can enter the shaft body 1 in the vertical direction.
In one embodiment of the present invention, the number of the weather sensors 5 is plural, and the distribution of the weather sensors 5 is not limited herein. For example, the number of the weather sensors 5 is two, and the weather sensors are arranged at opposite corners of the top of the hoistway body 1; or the number of the weather sensors 5 is four, and the four weather sensors are respectively arranged at four corners of the top of the hoistway body 1; the number of the weather sensors 5 is more than four, and the weather sensors are distributed on the top of the hoistway body 1 in an array mode.
Alternatively, a plurality of weather sensors 5 are arranged in parallel, so long as one of the weather sensors 5 detects rain, a signal can be fed back to the driving member 3, and even if some of the weather sensors 5 are damaged, the work of other weather sensors 5 is not affected.
In one embodiment of the present invention, the number of the temperature sensors 6 is plural, and the distribution of the temperature sensors 6 is not limited herein. For example, the temperature sensors 6 are sequentially distributed along the longitudinal direction of the hoistway body 1; alternatively, an equal number of temperature sensors 6 are provided for each height section of the hoistway body 1, such as 4 temperature sensors 6 provided between 10m and 12m of the hoistway body 1.
Alternatively, a plurality of temperature sensors 6 are arranged in parallel, so long as one of the temperature sensors 6 detects that the preset temperature is reached, a signal can be fed back to the driving member 3, and even if some of the temperature sensors 6 are damaged, the work of other temperature sensors 6 is not affected. The preset temperature value of the temperature sensor 6 can be selected from 35 degrees, 37 degrees, 40 degrees, and the like.
The utility model also provides an elevator system, which comprises the elevator shaft ventilation device in any embodiment, and the elevator system also comprises a car, wherein when the elevator system works, the car moves up and down in the shaft body 1.
When elevator system adopted foretell elevator well ventilation unit, when weather sensor 5 detected that there is not the water droplet, and when temperature sensor 6 reached predetermined temperature, driving piece 3 can push away ventilation window 2 automatically, made the inside of well body 1 ventilate fast, avoided the inside high temperature of well body 1 and influence the performance of each part of elevator. Compared with an exhaust fan, in the ventilation process, energy consumption is not needed all the time, energy consumption is generated only when the ventilation window 2 is pushed, meanwhile, downward window opening without rain can be guaranteed, and rainwater can be prevented from entering the inside of the hoistway body 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An elevator well ventilation unit which characterized in that: including the well body that has the vent, locate ventilation window, the drive of vent department the driving piece of ventilation window switch, be used for detecting whether be the weather sensor of bad weather and be used for detecting the temperature sensor of the inside temperature of well body, weather sensor locates the outer top of well body, temperature sensor locates the inside of well body, wherein, the driving piece basis weather sensor temperature sensor's detection information drive the ventilation window switch.
2. The elevator hoistway ventilation apparatus of claim 1, wherein: the number of the weather sensors is multiple, and the weather sensors are connected in parallel.
3. The elevator hoistway ventilation apparatus of claim 1, wherein: the number of the temperature sensors is multiple, and the temperature sensors are connected in parallel.
4. The elevator hoistway ventilation apparatus of claim 1, wherein: the ventilation window is plug-type ventilation window or flat-open type ventilation window, flat-open type ventilation window with be provided with between the well body and be used for the restriction the angle locating part of flat-open type ventilation window opening angle, flat-open type ventilation window is relative the well body is outwards opened.
5. The elevator hoistway ventilation apparatus of claim 1, wherein: the outer wall of ventilation window and/or the outer wall of well body has solar panel, elevator well ventilation unit still include with solar panel electric connection's energy memory, energy memory with driving piece electric connection.
6. The elevator hoistway ventilation apparatus of claim 5, wherein: the energy storage device is located inside the driving member.
7. The elevator hoistway ventilation apparatus of any of claims 1-6, wherein: the driving piece is a cylinder or a hydraulic cylinder, the shell of the driving piece is fixed on the well body, and the moving end of the driving piece is fixed on the ventilation window.
8. The elevator hoistway ventilation apparatus of any of claims 1-6, wherein: and a hand pulling piece convenient for manual push-pull is arranged on the ventilation window.
9. The elevator hoistway ventilation apparatus of any of claims 1-6, wherein: and a gauze used for plugging the ventilation opening is arranged at the ventilation opening.
10. Elevator system comprising an elevator shaft ventilation device according to any of claims 1-9, characterized in that: still include the car, the car in this internal lift of well.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115142776A (en) * | 2022-07-06 | 2022-10-04 | 重庆伊士顿电梯有限责任公司 | Novel install elevator well additional |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115142776A (en) * | 2022-07-06 | 2022-10-04 | 重庆伊士顿电梯有限责任公司 | Novel install elevator well additional |
CN115142776B (en) * | 2022-07-06 | 2023-12-15 | 重庆伊士顿电梯有限责任公司 | Novel install elevator well additional |
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