Elevator

Abstract

To provide an elevator capable of increasing a power generation amount of a wind power generation device.SOLUTION: An elevator includes a car 24 and a counterweight 25 that move up and down in a hoistway 10, a hoisting machine 20 that is installed in a first machine room 11 disposed above the hoistway 10 and has a drive sheave 21, a rope 23 that is wound around the drive sheave 21 and suspends the car 24 and the counterweight 25, and a wind turbine generator 30 that is installed in a second machine room 12 partitioned from both the hoistway 10 and the first machine room 11. The first machine chamber 11 and the second machine chamber 12 communicate with each other via a first ventilation port 16, the wind power generation device 30 includes an impeller 31 and a generator 32 that generates electric power by rotation of the impeller 31, and the impeller 31 is disposed so as to be rotated by a flow of air passing through the first ventilation port 16.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to elevators. [Background technology]

[0002] Patent Document 1 describes an elevator system. This elevator system includes a car, an elevator shaft, a machine room, and a control device. A wind power generation device that generates electricity using the airflow flowing through the elevator shaft is installed in the machine room. The wind power generation device has a propeller and a generator. The airflow in the elevator shaft flows through a duct to the machine room, causing the propeller to rotate. The rotational energy is converted into electrical energy by the generator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Microfilm of Utility Model Application No. 2-4656 (Utility Model Application No. 3-97470) Summary of the Invention [Problem to be solved by the invention]

[0004] However, the elevator shaft and the machine room are connected not only by a duct but also by multiple rope holes. Therefore, only a portion of the air flowing from the elevator shaft to the machine room passes through the duct. Therefore, the elevator system described above has a problem in that it is difficult to supply a large amount of air to the propeller, making it difficult to generate sufficient power.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator that can increase the amount of power generated by a wind turbine generator. [Means for solving the problem]

[0006] The elevator according to the present disclosure comprises a car and a counterweight that ascend and descend in a hoistway, a hoist having a drive sheave installed in a first machine room located above the hoistway, a rope wound around the drive sheave and suspending the car and the counterweight, and a wind power generation device installed in a second machine room separated from both the hoistway and the first machine room, wherein the hoistway and the first machine room are connected via a plurality of rope holes and the first machine room and the second machine room are connected via a ventilation opening, and the wind power generation device has an impeller and a generator that generates electricity by rotation of the impeller, and the impeller is arranged to rotate with the flow of air passing through the ventilation opening. [Effects of the Invention]

[0007] According to the present disclosure, the amount of power generated by a wind turbine generator can be increased. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing a schematic configuration of an elevator according to a first embodiment. [Figure 2] FIG. 4 is a diagram showing a modified example of the configuration of the elevator car according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 An elevator according to embodiment 1 will be described. Fig. 1 is a diagram showing a schematic configuration of an elevator according to this embodiment. As shown in Fig. 1, a building in which the elevator is installed is provided with an elevator shaft 10, a first machine room 11, and a second machine room 12.

[0010] The elevator shaft 10 extends vertically inside the building. The first machine room 11 and the second machine room 12 are located above the elevator shaft 10. At least the first machine room 11 is located directly above the elevator shaft 10. The first machine room 11 is separated from the elevator shaft 10 by a floor 11a of the first machine room 11.

[0011] A plurality of rope holes 15 are provided in the floor 11a. A rope 23, which will be described later, is passed through each rope hole 15. In this embodiment, there are two rope holes 15, but depending on the roping method of the elevator, there may be more than two rope holes 15. The elevator shaft 10 and the first machine room 11 are in communication with each other via the plurality of rope holes 15.

[0012] The second machine room 12 is separated from the elevator shaft 10 by a floor 12a of the second machine room 12. The second machine room 12 is also separated from the first machine room 11 by a wall 13, and is also separated from the outside by an outer wall 14 of the building.

[0013] A first ventilation port 16 is provided in the wall 13. The first machine room 11 and the second machine room 12 are in communication with each other via the first ventilation port 16. The number of first ventilation ports 16 is preferably less than the number of rope holes 15. The number of first ventilation ports 16 is, for example, one. The first ventilation port 16 may be provided with a straight duct extending in one direction.

[0014] A second ventilation opening 17 is provided in the outer wall 14. The second machine room 12 communicates with the outdoors via the second ventilation opening 17.

[0015] A hoisting machine 20 and a deflector sheave 22 are installed in the first machine room 11. The hoisting machine 20 has a drive sheave 21. A rope 23 is wound around the drive sheave 21 and the deflector sheave 22. A car 24 is connected to one end of the rope 23. A counterweight 25 is connected to the other end of the rope 23.

[0016] The car 24 and the counterweight 25 are suspended by ropes 23. The car 24 and the counterweight 25 each move up and down the hoistway 10 by rotation of the drive sheave 21. The direction of movement of the car 24 is parallel to the extension direction of the hoistway 10.

[0017] The car 24 has a car frame 26 and a car chamber 27. A rope 23 is connected to the car frame 26. The car chamber 27 is supported by the car frame 26. A car door 28 is provided in the car chamber 27. A landing door 29 is provided at each floor landing. The landing door 29 opens and closes in conjunction with the car door 28 when the car 24 lands on its floor.

[0018] An elevator control device (not shown) is installed in the first machine room 11 or the second machine room 12. The elevator control device controls the hoisting machine 20, thereby controlling the operation of the car 24.

[0019] A wind power generator 30 is installed in the second machine room 12. The wind power generator 30 has an impeller 31 and a generator 32. The impeller 31 in this embodiment is a propeller type. The impeller 31 is disposed opposite the first ventilation opening 16 so that it rotates due to the air flow passing through the first ventilation opening 16. For example, the rotation axis of the impeller 31 coincides with the central axis of the first ventilation opening 16.

[0020] The impeller 31 may be of a type other than a propeller type. Even in this case, the impeller 31 is arranged so as to rotate by the flow of air passing through the first ventilation opening 16.

[0021] The generator 32 is configured to generate electricity by the rotation of the impeller 31. As a result, the wind turbine generator 30 generates electricity by the flow of air passing through the first ventilation opening 16. The electricity generated by the wind turbine generator 30 is used, for example, to charge the emergency power supply, for regeneration, etc.

[0022] In this embodiment, the wind turbine generator 30 generates power not only by the air flow from the first machine room 11 to the second machine room 12, but also by the air flow from the second machine room 12 to the first machine room 11. The wind turbine generator 30 may have a pair of an impeller and a generator that generates power by the air flow from the first machine room 11 to the second machine room 12, and another pair of an impeller and a generator that generates power by the air flow from the second machine room 12 to the first machine room 11.

[0023] However, the wind turbine generator 30 may be configured to generate power only by the air flow from the first machine room 11 to the second machine room 12.

[0024] Next, the operation of the elevator according to this embodiment will be described. The air pressure inside the hoistway 10 fluctuates as the car 24 rises and falls. In the following description, the space in the hoistway 10 above the car 24 will be referred to as the upper space 10a, and the space below the car 24 will be referred to as the lower space 10b.

[0025] When the car 24 ascends in the elevator shaft 10, the air pressure in the upper space 10a increases and the air pressure in the lower space 10b decreases. When the air pressure in the upper space 10a increases, the air pressure in the upper space 10a becomes higher than the air pressure in the first machine room 11. As a result, air flows from the upper space 10a to the first machine room 11 through the multiple rope holes 15, and the air pressure in the first machine room 11 increases.

[0026] When the air pressure in the first machine chamber 11 rises, the air pressure in the first machine chamber 11 becomes higher than the air pressure in the second machine chamber 12. This causes air to flow from the first machine chamber 11 to the second machine chamber 12 through the first ventilation opening 16. The impeller 31 rotates due to the air flow passing through the first ventilation opening 16. The rotation of the impeller 31 causes the generator 32 to generate electricity.

[0027] When the air pressure in the second machine room 12 rises, the air in the second machine room 12 is discharged to the outside through the second ventilation opening 17. As a result, even if air flows from the first machine room 11 into the second machine room 12, the air pressure in the second machine room 12 is maintained approximately constant.

[0028] On the other hand, when the car 24 descends in the hoistway 10, the air pressure in the upper space 10a decreases and the air pressure in the lower space 10b increases. When the air pressure in the upper space 10a decreases, the air pressure in the upper space 10a becomes lower than the air pressure in the first machine room 11. As a result, air flows from the first machine room 11 to the hoistway 10 through the multiple rope holes 15, and the air pressure in the first machine room 11 decreases.

[0029] When the air pressure in the first machine chamber 11 drops, the air pressure in the first machine chamber 11 becomes lower than the air pressure in the second machine chamber 12. This causes air to flow from the second machine chamber 12 to the first machine chamber 11 through the first ventilation port 16. The impeller 31 rotates due to the air flow passing through the first ventilation port 16. The rotation of the impeller 31 causes the generator 32 to generate electricity.

[0030] When the air pressure in the second machine room 12 drops, outdoor air is introduced into the second machine room 12 through the second ventilation opening 17. As a result, even if air flows out from the second machine room 12 to the first machine room 11, the air pressure in the second machine room 12 is maintained approximately constant.

[0031] Figure 2 is a diagram showing a modified example of the configuration of an elevator car according to this embodiment. As shown in Figure 2, a rectifying plate 33 is provided on the top surface of the car 24. When viewed parallel to the direction of movement of the car 24, the rectifying plate 33 is provided so as to overlap the entire car 24.

[0032] The rectifying plate 33 has a first surface 33a facing the car 24 side and a second surface 33b facing away from the car 24. The rectifying plate 33 is formed so that the first surface 33a is convex and the second surface 33b is concave.

[0033] A wind rectifying plate 34 is provided on the underside of the car 24. When viewed parallel to the direction of movement of the car 24, the wind rectifying plate 34 is provided so as to overlap the entire car 24.

[0034] The rectifying plate 34 has a first surface 34a facing the car 24 and a second surface 34b facing away from the car 24. The rectifying plate 34 is formed so that the first surface 34a is convex and the second surface 34b is concave.

[0035] In this modified example, the air rectification plate 33 is provided on the upper surface of the car 24, and therefore, when the car 24 is ascending, the air above the car 24 is prevented from smoothly flowing below the car 24. This makes it easier for the air pressure in the upper space 10a to rise, and as a result, the amount of air passing through the first ventilation opening 16 can be increased.

[0036] Furthermore, in this modified example, the air rectification plate 34 is provided on the underside of the car 24, and therefore, when the car 24 is descending, the air below the car 24 is prevented from smoothly flowing above the car 24. This makes it easier for the air pressure in the upper space 10a to decrease, and as a result, the amount of air passing through the first ventilation opening 16 can be increased.

[0037] In this modified example, both the air rectifying plate 33 and the air rectifying plate 34 are provided, but only one of the air rectifying plate 33 and the air rectifying plate 34 may be provided.

[0038] As described above, the elevator according to this embodiment includes the car 24, the counterweight 25, the hoist 20, the rope 23, and the wind power generator 30. The car 24 and the counterweight 25 are configured to move up and down the hoistway 10. The hoist 20 is installed in the first machine room 11. The first machine room 11 is disposed above the hoistway 10. The hoist 20 has a drive sheave 21. The rope 23 is wound around the drive sheave 21. The rope 23 suspends the car 24 and the counterweight 25. The wind power generator 30 is installed in the second machine room 12. The second machine room 12 is separated from both the hoistway 10 and the first machine room 11.

[0039] The elevator shaft 10 and the first machine room 11 are in communication with each other via a plurality of rope holes 15. The first machine room 11 and the second machine room 12 are in communication with each other via a first ventilation port 16. The wind power generation device 30 has an impeller 31 and a generator 32 that generates electricity by the rotation of the impeller 31. The impeller 31 is arranged so as to rotate with the flow of air passing through the first ventilation port 16. Here, the first ventilation port 16 is an example of a ventilation port.

[0040] According to this configuration, the air flow path between the first machine chamber 11 and the second machine chamber 12 can be concentrated at the first ventilation port 16, which allows the impeller 31 to rotate efficiently, thereby increasing the amount of power generated by the wind turbine generator 30.

[0041] In the elevator according to this embodiment, a rectifying plate 33 is provided on the top surface of the car 24. The rectifying plate 33 has a first surface 33a facing the car 24 side and a second surface 33b facing away from the car 24. The rectifying plate 33 is formed so that the first surface 33a is convex and the second surface 33b is concave.

[0042] A rectifying plate 34 is provided on the underside of the car 24. The rectifying plate 34 has a first surface 34a facing the car 24 side and a second surface 34b facing away from the car 24. The rectifying plate 34 is formed so that the first surface 34a is convex and the second surface 34b is concave.

[0043] According to this configuration, the smooth flow of air between the upper part of the car 24 and the lower part of the car 24 is obstructed by the rectifying plate 33 or the rectifying plate 34, so that it is possible to increase the change in air pressure inside the hoistway 10. Therefore, it is possible to increase the amount of air passing through the first ventilation opening 16, and it is possible to further increase the amount of power generated by the wind turbine generator 30. [Explanation of symbols]

[0044] 10 elevator shaft, 10a upper space, 10b lower space, 11 first machine room, 11a floor, 12 second machine room, 12a floor, 13 wall, 14 outer wall, 15 rope hole, 16 first ventilation hole (ventilation hole), 17 second ventilation hole, 20 hoist, 21 drive sheave, 22 deflector, 23 rope, 24 cage, 25 counterweight, 26 cage frame, 27 cage room, 28 cage door, 29 landing door, 30 wind power generation device, 31 impeller, 32 generator, 33, 34 rectifier, 33a, 34a first surface, 33b, 34b second surface.

Claims

1. A car and a counterweight that ascends and descends in the hoistway; a hoisting machine installed in a first machine room arranged above the elevator shaft and having a drive sheave; a rope wound around the drive sheave and suspending the car and the counterweight; a wind power generation device installed in a second machine room separated from both the elevator shaft and the first machine room; Equipped with The elevator shaft and the first machine room communicate with each other via a plurality of rope holes, The first machine chamber and the second machine chamber are in communication with each other via a ventilation port, The wind turbine generator includes an impeller and a generator that generates electricity by rotation of the impeller, The impeller is arranged to rotate due to the flow of air through the ventilation opening.

2. A wind rectifying plate is provided on at least one of the upper surface and the lower surface of the car, The air rectification plate has a first surface facing the car and a second surface facing away from the car, 2. The elevator according to claim 1, wherein the rectifying plate is formed so that the first surface is convex and the second surface is concave.

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