Elevator system
The elevator system uses partitioning members and air curtains to manage pressure differences and airflow, addressing chimney effects for smooth door operation and fire safety.
Patent Information
- Application Number
- JP2023114796
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-07-12
- Publication Date
- 2025-01-24
AI Technical Summary
In high-rise buildings, the chimney effect causes pressure differences between elevator routes and floors, leading to door opening and closing disorders, unpleasant wind noises, and potential smoke movement during fires.
The elevator system employs partitioning members such as non-combustible sheets or air curtains to separate the elevator route, controlled by sensors and actuators to manage pressure differences and airflow.
This system ensures smooth door operation and reduces wind noise, while also preventing smoke movement during fires by effectively managing pressure differences and airflow.
Smart Images
Figure 2025012166000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to an elevator system that reduces the pressure differential between the elevator shaft and the floors of a building. [Background technology]
[0002] In high-rise buildings, in winter, when the temperature difference between indoors and outdoors becomes large, air flows from outdoors into the lower part of the elevator shaft, and this air rises in the elevator shaft due to buoyancy and flows out from the upper part of the elevator shaft. This phenomenon is called the chimney effect. If the pressure difference between the elevator shaft and the floors on the upper and lower floors of the building becomes large at this time, the chimney effect can cause various problems, such as problems with opening and closing the doors and unpleasant wind noise. In addition, the elevator shaft can become a route for smoke in the event of a fire. To solve this problem, the following proposals have been made:
[0003] Patent Document 1 proposes a stack effect reduction system in which an outside air intake fan is installed at the top of a vertical shaft that extends vertically from the lower floors to the higher floors of a high-rise building. Specifically, in winter, when a temperature difference occurs between the outside and inside of a building and an updraft occurs in the vertical shaft, the fan introduces cold outside air from the top into the vertical shaft, cooling the inside of the vertical shaft and suppressing the updraft in the vertical shaft. This reduces the amount of outside air flowing into the lower part of the vertical shaft from the outside. However, because the components are also cooled by cooling the vertical shaft, control that takes condensation into account is required.
[0004] Patent Document 2 shows an elevator system installed in a building having a pass-through area (4th to 11th floors) where elevator entrances are not provided, between lower utilization floors (1st to 3rd floors) where elevator entrances are provided, and upper utilization floors (12th to 14th floors). In this elevator system, a lower duct is provided on the lower floor side of the pass-through area, connecting the internal space of the elevator shaft to the outside of the building. Also, an upper duct is provided on the upper floor side of the pass-through area, connecting the internal space of the elevator shaft to the outside of the building. However, there are problems similar to those in Patent Document 1, as well as the problem of securing space for a duct to connect to the outside of the building.
[0005] Patent Document 3 shows a structure of a pit compartment having a door facing the space of a target floor in a high-rise building. The pit compartment structure includes an opening / closing mechanism that is provided at a height position directly below the target floor and selectively connects the inside of the pit compartment to the outside of the high-rise building, and a drive control system that opens the opening / closing mechanism just before the door opens and closes the opening / closing mechanism just after the door closes. However, there are problems similar to those in Patent Document 2. [Prior art documents] [Patent documents]
[0006] [Patent Document 1] JP 2006-77540 A [Patent Document 2] JP 2011-46501 A [Patent Document 3] JP 2014-19519 A Summary of the Invention [Problem to be solved by the invention]
[0007] An object of the present invention is to provide an elevator system that ensures smooth opening and closing of doors, suppresses the generation of wind noise, and enables smooth operation of the elevator. [Means for solving the problem]
[0008] The elevator system of the first invention is an elevator system (e.g., elevator systems 1 and 1A described below) that reduces a pressure difference between an elevator hoistway (e.g., elevator hoistway 10 described below) of a building (e.g., building 2 described below) and each floor (e.g., floors 3A to 3F described below) of the building, and includes an elevator hoistway provided in the building and extending vertically, an elevator car (e.g., elevator car 20 described below) that can run vertically within the elevator hoistway, and a partition member that partitions the elevator hoistway. The elevator system includes an opening / closing device (e.g., opening / closing devices 40, 60 described below) that can separate the elevator hoistway into upper and lower sections using a non-flammable sheet 47 or panel material 65 described below, and a control means (e.g., control device 50 described below) that controls the opening / closing device, wherein the control means closes the partition member to separate the elevator hoistway into upper and lower sections when the elevator car moves away from the partition member, and opens the partition member to release the partition of the elevator hoistway when the elevator car approaches the partition member.
[0009] The partition member may be a sheet or panel material. According to this invention, when the elevator car moves away from the partition member, the partition member closes to separate the elevator hoistway into upper and lower sections. This reduces the pressure difference between the elevator hoistway and each floor, allowing the doors to open and close smoothly and suppressing the generation of wind noise. On the other hand, when the elevator car approaches the partition member, the partition member opens to release the partition of the elevator hoistway, so that elevator operation is not hindered.
[0010] The elevator system of the second invention is an elevator system (e.g., elevator system 1B described below) that reduces a pressure difference between an elevator hoistway (e.g., elevator hoistway 10 described below) of a building (e.g., building 2 described below) and each floor (e.g., floors 3A to 3F described below) of the building, and includes an elevator hoistway provided within the building and extending vertically, an elevator car (e.g., elevator car 20 described below) that can run vertically within the elevator hoistway, an air curtain generator (e.g., air curtain generator 70 described below) that is provided on a wall surface within the elevator hoistway (e.g., wall surfaces 10B and 10D described below) and blows out air in a horizontal direction, and a pressure sensor (e.g., air pressure sensor 70 described below) that detects the pressure difference between the elevator hoistway and each floor (e.g., floors 3A to 3F described below). The elevator comprises a lower sensor (e.g., lower sensors 48A, 48B described below) and an upper sensor (e.g., upper sensors 49A, 49B described below) that are provided above and below the air curtain generator in the descending passage and detect the elevator car, and a control means (e.g., control device 50 described below) that controls the air curtain generator based on the detection signals of the lower sensor and the upper sensor, wherein the control means reduces the amount of air blown out by the air curtain generator when the elevator car is located between the upper sensor and the lower sensor, compared to when the elevator car is located above the upper sensor and below the lower sensor.
[0011] According to this invention, an air curtain is generated by blowing air from an air curtain generator, and the elevator shaft is divided into upper and lower parts by this air curtain. This reduces the pressure difference between the elevator shaft and each floor, allowing the doors to open and close smoothly and suppressing wind noise. Furthermore, when the elevator car passes through the air curtain, the amount of air blown out from the air curtain generator is reduced, thereby suppressing the shaking of the elevator car caused by the air blown out from the air curtain generator, and no disruption is caused to the operation of the elevator.
[0012] In the elevator system of the third invention, sensors for detecting the elevator car are provided above and below the partition member in the elevator hoistway, and the control means controls the opening and closing device based on signals from the sensors.
[0013] According to this invention, the control means detects the approach of the elevator car to the partition member based on the detection signal from the sensor and controls the opening and closing device, thereby enabling the elevator to operate smoothly. Effect of the Invention
[0014] According to the present invention, it is possible to provide an elevator system that ensures smooth opening and closing of doors, suppresses the generation of wind noise, and enables smooth operation of the elevator. [Brief description of the drawings]
[0015] [Figure 1] 1 is a schematic vertical cross-sectional view of an elevator system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the elevator system of FIG. 1 taken along line AA. [Diagram 3] FIG. 2 is a cross-sectional view of the elevator system of FIG. 1 taken along line BB. [Figure 4] FIG. 4 is an enlarged view of a portion of the elevator system of FIG. 3 surrounded by dashed line C. [Diagram 5] 5 is a cross-sectional view taken along a line DD and a line EE of FIG. 4. [Figure 6] FIG. 2A is a diagram showing the distribution of differential pressure between the inside and outside of an elevator hoistway according to a conventional example, and FIG. 2B is a diagram showing the distribution of differential pressure between the inside and outside of an elevator hoistway according to the first example embodiment. [Figure 7] FIG. 1 is an explanatory diagram (part 1) of the operation of a control device for an elevator system. [Figure 8] FIG. 2 is an explanatory diagram (part 2) of the operation of the control device of the elevator system. [Figure 9] FIG. 1 is a schematic diagram showing the structure of a building to be simulated. [Figure 10]FIG. 13 is a diagram showing simulation conditions (c-1 to c-6) and simulation results. [Figure 11] A diagram showing the distribution of differential pressure in buildings at c-1 and c-2. [Figure 12] FIG. 3(a) is a vertical cross-sectional view of an elevator system according to a second embodiment of the present invention, and FIG. 3(b) is a vertical cross-sectional view of an elevator system according to a third embodiment of the present invention. [Figure 13] FIG. 11 is an explanatory diagram (part 1) of the operation of the control device for the elevator system according to the third embodiment. [Figure 14] FIG. 13 is an explanatory diagram (part 2) of the operation of the control device for the elevator system according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0016] The present invention is an elevator system that reduces the pressure difference between the elevator hoistway and each floor of a building by dividing the inside of the elevator hoistway into upper and lower parts with partition members (non-combustible sheets, non-combustible panel materials) or air curtains. In the first embodiment, a non-combustible sheet is used as the partition member, and in the second embodiment, a non-combustible panel material is used. In the third embodiment, an air curtain is generated by an air curtain generator. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same components are denoted by the same reference numerals, and the description thereof will be omitted or simplified. [First embodiment] Fig. 1 is a schematic vertical cross-sectional view of an elevator system 1 according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view of the elevator system 1 of Fig. 1 taken along line AA. Fig. 3 is a cross-sectional view of the elevator system 1 of Fig. 1 taken along line BB. The elevator system 1 reduces the pressure difference between an elevator shaft 10 in a building 2 and each of the floors 3A to 3F. The building 2 is a six-story building having floors 3A to 3F from the first floor to the sixth floor. In this embodiment, for ease of explanation, the elevator system 1 is applied to the six-story building 2, but is not limited thereto and may be applied to a high-rise building having several tens of floors. The elevator system 1 comprises an elevator hoistway 10 extending vertically within a building 2, an elevator car 20 capable of running vertically within the elevator hoistway 10, a lifting device 30 provided in the elevator hoistway 10 for raising and lowering the elevator car 20, an opening and closing device 40 capable of dividing the elevator hoistway 10 into upper and lower sections with a non-flammable sheet 47 as a partition member, and a control device 50 as a control means for controlling the opening and closing device 40.
[0017] Elevator hoistway 10 has a rectangular cylindrical shape and is surrounded by four wall surfaces 10A, 10B, 10C, and 10D. Of wall surfaces 10A to 10D, wall surface 10A and wall surface 10C face each other, and wall surface 10B and wall surface 10D face each other. Openable and closable elevator doors 11A to 11F are provided between a wall surface 10A of the elevator shaft 10 and each of the floors 3A to 3F. A machine room 12 is provided at the upper end of the elevator hoistway 10. A pit 13 is provided at the bottom end of the elevator hoistway 10. The pit 13 is provided with a car shock absorber 14 that absorbs the impact of the elevator car 20, and a weight shock absorber 15 that absorbs the impact of a counterweight 31, which will be described later.
[0018] The lifting device 30 comprises a counterweight 31 capable of ascending and descending along the wall surface C of the elevator hoistway 10, a sheave 32 provided directly above the elevator car 20 in the machine room 12, a hoist 33 that rotates the sheave 32, a deflector pulley 34 provided directly above the counterweight 31 in the machine room 12, and a rope 35 that connects the counterweight 31 and the elevator car 20 and is hung on the sheave 32 and the deflector pulley 34.
[0019] Fig. 4 is an enlarged view of a portion of the elevator system 1 in Fig. 3 surrounded by a dashed line C. Fig. 5(a) is a cross-sectional view taken along line DD in Fig. 4. Fig. 5(b) is a cross-sectional view taken along line EE in Fig. 4. The opening and closing device 40 includes an opening and closing section 40A provided on the wall surface 10B side, and an opening and closing section 40B provided on the wall surface 10D side. Each of the opening / closing sections 40A and 40B includes a sheave 41 provided in the machine room 12, a drive unit 42 that rotates and drives the sheave 41, a lower pulley 43 and an upper pulley 44 provided directly below the sheave 41 at a predetermined height h from the first floor surface, a tip pulley 45 provided directly below the elevator car 20 at the predetermined height h, a wire 46 wound around the sheave 41, the lower pulley 43, the upper pulley 44, and the tip pulley 45, and a noncombustible sheet 47 as a flexible partition member stretched between the wires 46. Here, the predetermined height h is approximately the middle height of the elevator hoistway 10.
[0020] In this opening and closing device 40, when each noncombustible sheet 47 is arranged between the upper pulley 44 and the tip pulley 45, the elevator hoistway 10 is partitioned at a predetermined height h by the noncombustible sheets 47. When the driving device 42 is driven from this state to drive the wire 46 in the direction of the arrow in Fig. 4, each noncombustible sheet 47 moves toward the wall surfaces 10B, 10D as shown by the dashed lines in Fig. 4, and the partition of the elevator hoistway 10 is released.
[0021] The effects of partitioning the elevator hoistway 10 with the opening and closing device 40 are as follows. Fig. 6(a) is a diagram showing the distribution of differential pressure between the inside and outside of a conventional elevator hoistway, and Fig. 6(b) is a diagram showing the distribution of differential pressure between the inside and outside of an elevator hoistway of the present invention. Conventionally, due to the chimney effect, air that enters a building from the outdoors flows into the elevator hoistway 10 from the lower part thereof, then rises and flows out from the upper part of the elevator hoistway 10. In this case, as shown in Fig. 6(a), the pressure difference between the elevator hoistway 10 and each floor becomes large on the upper and lower floors of the building. In contrast, in the present invention, elevator hoistway 10 is divided into upper and lower parts at a predetermined height h by non-combustible sheet 47. As a result, as shown in Fig. 6(b), the upper and lower parts of non-combustible sheet 47 become separate spaces, and the pressure difference between elevator hoistway 10 and each floor on the upper and lower floors of a building becomes smaller than in the past.
[0022] Returning to FIG. 4, at a height h1 that is lower than a predetermined height h in the elevator hoistway 10 by a predetermined dimension t, lower sensors 48A, 48B that detect the elevator car 20 are provided side by side. At a predetermined height h2 that is higher than the predetermined height h in the elevator hoistway 10 by a predetermined dimension t, upper sensors 49A, 49B that detect the elevator car 20 are provided side by side, one above the other.
[0023] Based on the detection signals of the lower sensors 48A, 48B and the upper sensors 49A, 49B, the control device 50 drives the drive device 42 of the opening and closing device 40 to separate the elevator hoistway 10 by the noncombustible sheet 47 at a predetermined height h.
[0024] Specifically, as shown in Fig. 7, when lower sensor 48A detects elevator car 20 and then lower sensor 48B detects elevator car 20 rising, controller 50 determines that elevator car 20 has approached noncombustible sheet 47 at a predetermined height h from below. Therefore, controller 50 drives drive device 42 to release the partition of elevator hoistway 10. Thereafter, when the elevator car 20 passes through the predetermined height h and the upper sensor 49A no longer detects the elevator car 20, and then the upper sensor 49B no longer detects the elevator car 20, the control device 50 determines that the elevator car 20 has moved away from the predetermined height h. Therefore, the control device 50 drives the drive device 42 to partition the elevator hoistway 10 again.
[0025] 8, when the upper sensor 49A detects the elevator car 20 after the upper sensor 49B detects the descending elevator car 20, the control device 50 determines that the elevator car 20 has approached the noncombustible sheet 47 at the predetermined height h from above. Therefore, the control device 50 drives the drive device 42 to release the partition of the elevator hoistway 10. Thereafter, when the elevator car 20 passes through the predetermined height h and the lower sensor 48A no longer detects the elevator car 20 after the lower sensor 48B no longer detects the elevator car 20, the control device 50 determines that the elevator car 20 has moved away from the predetermined height h. Therefore, the control device 50 drives the drive device 42 to partition the elevator hoistway 10 again.
[0026] [Simulation to confirm the effectiveness of switching devices] The effects of providing the opening and closing device of the present invention were confirmed by simulation for a building having a structure as shown in FIG. The building is 200m high and has 50 floors, with a 3.5m x 3.5m elevator shaft extending from the first to the 50th floors. For this building, six simulation conditions, c-1 to c-6, were set, as shown in Figure 10. c-1 is when there are no closed locations, c-2 is when one location between the 24th and 25th floors is 100% closed, c-3 is when it is 95% closed, and c-4 is when it is 90% closed. Additionally, c-5 is when two locations between the 16th and 17th floors and between the 32nd and 33rd floors are 95% closed, and c-6 is when it is 90% closed. For the above c-1 to c-6, the distribution of differential pressure between the elevator shaft and each floor of the building was obtained by simulation.
[0027] Figure 10 shows the simulation results for c-1 to c-6. Moreover, Figure 11(a) shows the distribution of differential pressure in the building in case c-1 (no closed areas). In case c-1, the differential pressure on the lowest floor (1st floor) was -90 Pa, and the differential pressure on the highest floor (49th floor) was 72 Pa. Moreover, Figure 11(b) shows the distribution of differential pressure in the building in case c-2 (100% closed at one location between the 24th and 25th floors). In case c-2, the differential pressure on the lowest floor (1st floor) was -41 Pa, and the differential pressure on the highest floor (49th floor) was 35 Pa.
[0028] From the above simulation results, it was found that the more closure points there are and the higher the closure rate, the smaller the differential pressure becomes. For example, when one location is closed 100% (c-2), the differential pressure can be reduced by about 50% compared to when there is no closed location (c-1). However, since the closed location requires space to allow the counterweight to pass through, it is difficult to close the location 100%. Therefore, it is possible to consider closing the closed locations 95% or 90%. When one location is closed 95% (c-3), the pressure difference can be reduced by approximately 25% compared to no closed location (c-1). When one location is closed 90% (c-4), the pressure difference can be reduced by approximately 10% compared to no closed location (c-1). When two locations are closed 95% (c-5), the pressure difference can be reduced by approximately 40% compared to no closed location (c-1). When two locations are closed 90% (c-6), the pressure difference can be reduced by approximately 20% compared to no closed location (c-1).
[0029] According to this embodiment, the following effects are obtained. (1) When elevator car 20 moves away from noncombustible sheet 47, noncombustible sheet 47 closes to separate elevator hoistway 10 into upper and lower sections. This reduces the pressure difference between elevator hoistway 10 and each of floors 3A-3F, allowing elevator doors 11A-11F to open and close smoothly and suppressing the generation of wind noise. On the other hand, when elevator car 20 approaches noncombustible sheet 47, noncombustible sheet 47 opens to release the partition of elevator hoistway 10, so that elevator operation is not hindered. The elevator system 1 of the present invention has a significant effect of reducing the pressure difference between the elevator shaft and each floor of the building, particularly when installed in a high-rise building with a height of over 100 m. (2) Since the elevator hoistway 10 is divided into upper and lower sections by the non-combustible sheet 47, in the event of a fire, the non-combustible sheet 47 can suppress the movement of smoke within the elevator hoistway 10.
[0030] Second Embodiment FIG. 12(a) is a vertical cross-sectional view of an elevator system 1A according to a second embodiment of the present invention. This embodiment differs from the first embodiment in that the opening and closing device 60 opens and closes a noncombustible panel material 65 instead of a noncombustible sheet. That is, the opening and closing device 60 includes an opening and closing section 60A provided on the wall surface 10B side, and an opening and closing section 60B provided on the wall surface 10D side. Each of the opening / closing sections 60A and 60B comprises a sheave 61 provided in the machine room 12, a drive unit 62 for rotating the sheave 61, a pair of pulleys 63 provided directly below the sheave 61 at a predetermined height h from the first floor surface, a wire 64 wound around the sheave 61 and pulleys 63, and a panel material 65 serving as a partition member attached to the pulley 63.
[0031] In this opening and closing device 60, when the panel materials 65 are closed, the elevator hoistway 10 is partitioned at a predetermined height h by the panel materials 65. When the drive device 42 is driven to rotate the pulley 63 from this state, the panel materials 65 move toward the wall surfaces 10B and 10D as shown by the dashed lines in Figure 12(a), and the partitioning of the elevator hoistway 10 is released. Here, when the elevator car 20 rises from below, the panel materials 65 open upward. On the other hand, when the elevator car 20 descends from above, the panel materials 65 open downward.
[0032] According to this embodiment, in addition to the above-mentioned (1), the following effect is obtained. (3) Since the elevator hoistway 10 is divided into upper and lower sections by the non-flammable panel material 65, in the event of a fire, the non-flammable panel material 65 can suppress the movement of smoke within the elevator hoistway 10.
[0033] Third Embodiment FIG. 12(b) is a vertical cross-sectional view of an elevator system 1B according to a third embodiment of the present invention. This embodiment differs from the first embodiment in that an air curtain generating device 70 is provided instead of an opening and closing device. That is, an air curtain generator 70 that blows air horizontally to generate an air curtain 71 is provided at a predetermined height h on a wall surface within elevator hoistway 10. Air curtain generator 70 includes blowing unit 70A that is provided on wall surface 10B and blows air horizontally, and suction unit 70B that is provided on wall surface 10D and sucks in the air blown out from blowing unit 70A.
[0034] The control device 50 controls the amount of air blown out by the air curtain generator 70 based on the detection signals of the lower sensors 48A, 48B and the detection signals of the upper sensors 49A, 49B. In other words, when the elevator car 20 is located between the lower sensors 48A, 48B and the upper sensors 49A, 49B, the control device 50 reduces the amount of air blown out by the air curtain generating device 70 compared to when the elevator car 20 is located below the lower sensors 48A, 48B and above the upper sensors 49A, 49B.
[0035] Specifically, as shown in FIG. 13, when elevator car 20 is located below lower sensors 48A, 48B and above upper sensors 49A, 49B, the amount of air blown out by air curtain generator 70 is set to f1. When lower sensor 48B detects elevator car 20 after lower sensor 48A detects elevator car 20 rising, controller 50 determines that elevator car 20 has approached air curtain generator 70 at predetermined height h from below. Therefore, controller 50 sets the amount of air blown out by air curtain generator 70 to f2, which is less than f1. Thereafter, when the elevator car 20 passes through the predetermined height h and the upper sensor 49A no longer detects the elevator car 20, and then the upper sensor 49B no longer detects the elevator car 20, the control device 50 determines that the elevator car 20 has moved away from the predetermined height h. Therefore, the control device 50 returns the amount of air blown out by the air curtain generator 70 to f1.
[0036] 14, when the upper sensor 49A detects the elevator car 20 after the upper sensor 49B detects the descending elevator car 20, the control device 50 determines that the elevator car 20 has approached the noncombustible sheet 47 at the predetermined height h from above. Therefore, the control device 50 sets the amount of air blown out by the air curtain generator 70 to f2, which is less than f1. Thereafter, when the elevator car 20 passes through the predetermined height h and the lower sensor 48B no longer detects the elevator car 20, and then the lower sensor 48A no longer detects the elevator car 20, the control device 50 determines that the elevator car 20 has moved away from the predetermined height h. Therefore, the control device 50 returns the amount of air blown out by the air curtain generator 70 to f1. According to this embodiment, the following effects are obtained.
[0037] (4) Air curtain 71 is generated by air blown out from air curtain generator 70, and elevator hoistway 10 is divided into upper and lower sections by air curtain 71. This reduces the pressure difference between elevator hoistway 10 and each of floors 3A-3F, allowing elevator doors 11A-11F to be opened and closed smoothly and suppressing wind noise. Furthermore, when the elevator car 20 passes through the air curtain 71, the amount of air blown out from the air curtain generator 70 is reduced, thereby suppressing the shaking of the elevator car 20 caused by the air blown out from the air curtain generator 70, and no disruption is caused to the operation of the elevator.
[0038] The present invention is not limited to the above-described embodiment, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention. In each of the above-described embodiments, the opening and closing device 40 is provided only at one location at the middle height of the elevator hoistway 10. However, the present invention is not limited to this, and the opening and closing device 40 may be provided at a plurality of locations in the elevator hoistway 10. In addition, in each embodiment, the opening and closing devices 40, 60 and the air curtain generating device 70 are driven based on the position information of the elevator car 20, but this is not limited to the above, and the opening and closing devices 40, 60 and the air curtain generating device 70 may also be driven based on information about a fire outbreak. [Explanation of symbols]
[0039] 1, 1A, 1B…Elevator system 2…Building 3A~3F…Floor 10...Elevator shaft 10A~10D...Wall surface 11A~11F...Elevator door 12...machine room 13...pit 14...cage shock absorber 15...weight shock absorber 20…Elevator car 30... Lifting device 31... Counterweight 32... Sheave 33...Winching machine 34...Deviation wheel 35...Rope 40... Switching device 40A, 40B... Switching unit 41... Sheave 42... Drive device 43...Lower pulley 44...Upper pulley 45...Tip pulley 46...Wire 47... Non-combustible sheet (partition member) 48A, 48B... Lower sensor 49A, 49B...Upper sensor 50...Control device (control means) 60... Opening and closing device 60A, 60B... Opening and closing section 61... Sheave 62... Driving device 63...pulley 64...wire 65...panel material (partition member) 70...Air curtain generator 70A...Blowout section 70B...Suction section 71...Air curtain
Claims
1. 1. An elevator system for reducing a pressure differential between an elevator shaft of a building and floors of the building, comprising: an elevator shaft provided within the building and extending vertically; an elevator car capable of traveling up and down within the elevator hoistway; an opening and closing device capable of dividing the inside of the elevator hoistway into upper and lower sections with a partition member; A control means for controlling the opening and closing device, The control means closes the partition member to separate the elevator hoistway into upper and lower sections when the elevator car moves away from the partition member, and opens the partition member to release the partition of the elevator hoistway when the elevator car approaches the partition member.
2. 1. An elevator system for reducing a pressure differential between an elevator shaft of a building and floors of the building, comprising: an elevator shaft provided within the building and extending vertically; an elevator car capable of traveling up and down within the elevator hoistway; an air curtain generating device provided on a wall surface in the elevator hoistway and blowing air in a horizontal direction; a lower sensor and an upper sensor provided above and below the air curtain generator in the elevator hoistway to detect the elevator car; and a control means for controlling the air curtain generating device based on detection signals from the lower sensor and the upper sensor. The elevator system is characterized in that the control means reduces the amount of air blown out from the air curtain generating device when the elevator car is located between the lower sensor and the upper sensor, compared to when the elevator car is located above the upper sensor and below the lower sensor.
Citation Information
Patent Citations
Chimney effect reducing system
JP2006077540A
Elevator device
JP2011046501A
Vertical shaft compartment structure in high-rise building
JP2014019519A