KR20080047397A - Elevator device - Google Patents

Abstract

In an elevator device, a drive device is placed in a hoistway. An elevator car is moved up and down in the hoistway by the drive device. A ventilation duct is provided in the hoistway. The ventilation duct has an upper air-inlet/outlet positioned in the hoistway, above a landing doorway of the uppermost floor, and also has a lower air-inlet/outlet positioned in the hoistway, below the upper air-inlet/outlet.

Description

Elevator device {ELEVATOR DEVICE}

The present invention relates to an elevator apparatus of a machine roomless type in which a drive device is installed in a hoistway.

In the elevator apparatus of the conventional machine roomless type, a ventilation device is generally unnecessary, but a ventilation device is required when the temperature around the drive device becomes high. On the other hand, in consideration of economy and the like, an elevator apparatus for ventilating the inside of a hoistway and the inside of a car by a car ventilator has been proposed in a state where the door of the car is opened when the car stops on the top floor. See, for example, Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-72347

Problems to be Solved by the Invention

However, in the conventional elevator apparatus as described above, it is not possible to ventilate the top of the hoistway only when the car is stopped at the top floor, and the temperature of the top of the hoistway rises, which may shorten the life of equipment installed at the top of the hoistway. . In addition, in order to fully ventilate the top of the hoistway, it is necessary to stop the car on the uppermost floor for a long time with the door open, and the operation rate of the elevator device is lowered.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator apparatus which can suppress the temperature rise of the top of a hoistway efficiently.

Means for solving the problem

The elevator apparatus according to the present invention includes a drive device installed in a hoistway, a car for lifting up and down the hoistway by the drive device, and an upper air supply / exhaust mechanism located above the entrance of the top floor in the hoistway. and an exhaust duct having a lower air supply and exhaust opening located below the upper air supply and discharge in the hoistway.

In addition, the elevator apparatus according to the present invention includes a drive device installed in a hoistway, a car for lifting up and down the hoistway by means of a drive device, an upper end positioned above the entrance of the platform on the top floor in the hoistway, and an upper end part in the hoistway. It has a lower end part located below and is provided with the partition plate arrange | positioned between the lifting area of a cage | basket | car and the lifting area of a counterweight.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the main part of the elevator apparatus by Embodiment 1 of this invention.

FIG. 2 is a configuration diagram showing a state when the car of the elevator apparatus of FIG. 1 descends. FIG.

3 is a graph showing the relationship between the distance from the ceiling of the hoistway of FIG. 1 and the temperature;

It is a block diagram which shows the principal part of the elevator apparatus by Embodiment 2 of this invention.

It is a block diagram which shows the principal part of the elevator apparatus by Embodiment 3 of this invention.

It is a block diagram which shows the main part of the elevator apparatus by Embodiment 4 of this invention.

It is a block diagram which shows the main part of the elevator apparatus by Embodiment 5 of this invention.

Preferred Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the main part of the elevator apparatus by Embodiment 1 of this invention.

In the figure, the drive device 2 is provided in the upper part (the upper part of the hoistway) in the hoistway 1. The drive device 2 has a drive sheave, a motor portion for rotating the drive sheave, and a brake portion for braking the rotation of the drive sheave. Moreover, the drive device 2 is arrange | positioned so that the rotating shaft of a drive sheave may become perpendicular or substantially perpendicular. Moreover, as the drive device 2, a thin hoisting machine whose axial dimension is shorter than the dimension of the direction perpendicular to the axial direction is used. Furthermore, the drive device 2 is supported by a support beam (not shown) fixed to the top of the hoistway.

The car 3 and the counterweight (not shown) are suspended in the hoistway 1 by a main rope (not shown) wound around the drive sheave, thereby elevating the inside of the hoistway 1 by the driving force of the drive device 2. do.

In the upper part of the hoistway 1, the ventilation duct 4 for ventilating the upper part of the hoistway is provided. The ventilation duct 4 has an upper air supply and exhaust mechanism 4a located above the landing entrance and exit 5 on the uppermost floor in the hoistway 1, and a lower part located below the upper air supply and exhaust 4a within the hoistway 1. It has a supply / exhaust mechanism 4b.

The upper supply / discharge mechanism 4a is located at the top of the hoistway, and faces the side of the drive device 2. The lower air supply / discharge mechanism 4b is located above the level of the bottom surface of the uppermost layer in the hoistway 1, and opens directly downward. That is, the ventilation duct 4 is bent at approximately right angles in the vicinity of the upper air supply and exhaust mechanism 4a, and the end of the upper air supply and exhaust mechanism 4a side of the ventilation duct 4 is horizontal, and the lower air supply and exhaust mechanism 4b side is provided. The end of is vertical. Moreover, the upper end of the ventilation duct 4 is being fixed to the support beam which supports the drive apparatus 2. In other words, the support beam is provided with a drive unit mounting unit for mounting the drive unit 2 and a duct mounting unit for mounting the ventilation duct 4.

In such an elevator apparatus, as shown by the arrow of FIG. 1, when the cage | basket | car 3 is raised in the hoistway 1, the upper air in the hoistway 1 is pushed by the cage | basket | car 3, and the ventilation duct ( It passes through 4) and flows downward. On the contrary, when the cage | basket | car 3 descend | falls, as shown by the arrow of FIG. 2, the warm air of the top of a hoistway descend | hangs with the cage | basket | car 3, and comparatively cool air rises through the ventilation duct 4, and is raised. As a result, the temperature rise near the top of the hoistway can be efficiently suppressed, and the temperature margin of the device such as the drive device 2 disposed at the top of the hoistway can be ensured, thereby extending the life of the machine.

FIG. 3 is a graph showing the relationship between the distance from the ceiling of the hoistway of FIG. 1 and the temperature. When the broken line does not perform the ventilation using the ventilation duct 4, the solid line shows the case where the ventilation using the ventilation duct 4 is performed. It is shown. When ventilation is not performed, as shown by the broken line of FIG. 3, the temperature of the top of a hoistway is highest in a ceiling part, and falls rapidly near the boarding point entrance 5 of the uppermost floor. On the other hand, when ventilating, as shown by the solid line of FIG. 3, the temperature of an upper part of a hoistway can be reduced. Moreover, since the ventilation with the platform is easy to be performed in the vicinity of the boarding point entrance and exit 5, even if warm air is sent to the top of the hoistway by the ventilation duct 4, there is almost no temperature rise.

Here, since the opening area of the upper air supply / exhaust mechanism 4a of the ventilation duct 4 is sufficiently smaller than the vertical projection area of the car 3, the air which is about to flow other than the ventilation duct 4 by lifting and lowering the car 3 is. By blocking the flow path as much as possible, the speed of the air flow in the ventilation duct 4 becomes sufficiently higher than the traveling speed of the car 3. For example, when the vertical projection area of the car 3 is 10 times the opening area of the upper air supply and exhaust port 4a, and the loss is ignored, the speed of the air flow in the ventilation duct 4 is driven by the car 3. 10 times the speed.

In this way, the speed of the air flow in the ventilation duct 4 is increased, and the car 3 is arranged by opposing the upper air supply and exhaust mechanism 4a to devices such as the drive device 2 disposed at the top of the hoistway. When it descends, cooling wind can be blown out to the apparatus of the top of a hoistway, and an apparatus can be cooled efficiently. As a result, the fan installed in the equipment at the top of the hoistway can be miniaturized or omitted, and the equipment can be miniaturized.

Embodiment 2.

Next, FIG. 4 is a block diagram which shows the principal part of the elevator apparatus by Embodiment 2 of this invention. In the figure, the control apparatus 6 which controls the drive apparatus 2 is provided in the hoistway 1. The control device 6 is fixed to the hoistway wall at about the same height as the top floor. The cooling apparatus 7 is provided in the control apparatus 6.

The lower supply / discharge mechanism 4b is disposed to face the upper surface of the control device 6. The plurality of electrical wires (not shown) connecting the control device 6 and the drive device 2 are inserted into the ventilation duct 4 to be accommodated therein. That is, the ventilation duct 4 also serves as a wiring duct. The other configuration is the same as that of the first embodiment.

In such an elevator apparatus, by arranging the control device 6 opposite the lower air supply / exhaust mechanism 4b, the cooling fan of the control device 6 even when the car 3 is stopped or when being lifted from the lower floor. By driving (7), the upper part of the hoistway can be ventilated through the ventilation duct 4, and the temperature rise of the hoistway can be efficiently suppressed.

Moreover, since the ventilation duct 4 also serves as a wiring duct, cost can be reduced and space can be utilized effectively.

Embodiment 3.

Next, FIG. 5: is a block diagram which shows the principal part of the elevator apparatus by Embodiment 3 of this invention. In the figure, the drive device 12 is provided in the upper part (the upper part of the hoistway) in the hoistway 11. The drive apparatus 12 has a drive sheave, a motor part which rotates a drive sheave, and a brake part which brakes rotation of a drive sheave. Moreover, the drive device 12 is arrange | positioned so that the rotating shaft of a drive sheave may become horizontal. In addition, the drive device 12 is supported by a support beam (not shown) fixed to the top of the hoistway.

In the vicinity of the drive device 12, a deflection sheave 13 is arranged. The main rope 14 is wound around the drive sheave and the deflection sheave 13. The car 15 and the counterweight 16 are suspended in the hoistway 11 by the main rope 14, and the hoist 11 lifts the inside of the hoistway 11 by the driving force of the drive device 12.

At the top of the hoistway, a control device 17 for controlling the drive device 12 is provided. The controller 17 is fixed to the hoistway wall at the top of the hoistway. A plate-shaped partition plate 18 is provided between the lifting area of the upper cage 15 in the hoistway 11 and the lifting area of the counterweight 16. The partition plate 18 blocks the flow of air between the regions on both sides thereof. In addition, the partition plate 18 is located in the hoistway 11 above the upper end part 18a located above the boarding point entrance 5 of the uppermost floor, and is located below the upper end part of the partition plate 18 in the hoistway 11. It has a lower end 18b.

The upper end 18a is disposed between the drive device 12 and the deflection sheave 13. The lower end 18b is located above the level of the bottom surface of the uppermost layer. In addition, the partition plate 18 is fixed to at least one of the hoistway wall and the support beam.

In such an elevator apparatus, when the cage 15 is raised in the hoistway 11 and the counterweight 16 falls, the airflow indicated by the arrow of FIG. 5 occurs in the hoistway 11, and warm air at the top of the hoistway causes the counterweight. It flows downward through the passage on the side of (16), and cold air of the lower side flows upward with the cage | basket | car 15. On the contrary, when the cage 15 is lowered and the counterweight 16 is raised, the warm air at the top of the hoistway flows downward with the cage 15 and the cold air at the bottom passes the passage on the counterweight 16 side. Pass through and flow upwards.

As a result, the temperature rise near the top of the hoistway can be efficiently suppressed, and the temperature margin of the device such as the drive device 2 disposed at the top of the hoistway can be ensured, thereby extending the life of the machine. Moreover, the airflow can be trimmed by the partition plate 18, and the lifting resistance of the cage | basket | car 15 can be reduced.

Embodiment 4.

Next, FIG. 6: is a block diagram which shows the principal part of the elevator apparatus by Embodiment 4 of this invention. In this example, the lower end portion 18b of the partition plate 18 is located below the third embodiment. That is, the vertical dimension of the partition plate 18 is longer than 3rd Embodiment. Specifically, the lower end 18b is located in the vicinity of the second floor below the top floor. The other configuration is the same as that in the third embodiment.

In such an elevator apparatus, the range in which the air is stirred in the hoistway 11 is increased by the hoisting of the car 15 and the counterweight 16. Therefore, the temperature of warm air flowing downward from the top of the hoistway gradually decreases the hoistway wall as the heat dissipation surface 19. As a result, the temperature rise near the top of the hoistway is more reliably suppressed.

Embodiment 5.

Next, FIG. 7: is a block diagram which shows the principal part of the elevator apparatus by Embodiment 5 of this invention. In the figure, the same ventilation duct 4 as Embodiment 1 is provided in the upper part of the hoistway 1. The cooling fan 21 is provided in the ventilation duct 4. In addition, a temperature detector 22 for detecting the temperature of the top of the hoistway is provided at the ceiling of the hoistway 1. The detection signal from the temperature detector 22 is input to the controller 17.

The controller 17 detects the temperature at the top of the hoistway based on the signal from the temperature detector 22. When the temperature at the top of the hoistway reaches a preset temperature, the control unit 17 moves the car 15 to the upper floor to perform the ventilation operation by lifting the car 15 and the balance weight 16. When the car 15 cannot be moved to the upper floor, or when the car 15 must be stopped, the controller 17 drives the cooling fan 21 to forcibly vent the top of the hoistway. do. The other configuration is the same as that of the third embodiment.

In such an elevator apparatus, the temperature rise near the top of the hoistway can be efficiently suppressed while prioritizing service to the passenger.

In the above example, the drive devices 2 and 12 are disposed at the top of the hoistway, but the drive device may be arranged at another place in the hoistway, for example, at the bottom of the hoistway. Also in this case, by ventilating the top of the hoistway, it is possible to suppress the rise in temperature of the apparatus arranged at the top of the hoistway.

The drive device may be a longitudinally long hoist that is longer than the dimension in the direction perpendicular to the axial direction, and the same effect can be obtained.

In the above example, one ventilation duct 4 is used, but a plurality of ventilation ducts may be used.

Further, in the above example, one upper air supply and exhaust mechanism 4a is provided in one ventilation duct 4, but a ventilation duct having a plurality of upper air supply and exhaust mechanisms may be used. Similarly, a ventilation duct having a plurality of lower air supply and exhaust mechanisms may be used.

In the case where the upper air supply / exhaust mechanism of the ventilation duct is opposed to the driving device, the upper air supply / exhaust mechanism is disposed on the driving device so as to oppose the upper air supply / exhaust mechanism to an encoder (a rotation detector that generates a signal according to the rotation of the motor unit). Long life can be achieved.

As described above, the present invention can be used for an elevator apparatus of a machine roomless type in which a driving device is provided in a hoistway.

Claims (8)

Drive device installed in the hoistway, A car for elevating the inside of the hoistway by the drive device, and Ventilation duct having an upper air supply and exhaust opening located above the landing entrance of the uppermost floor in the hoistway, and a lower air supply and exhaust mechanism located below the upper air exhauster in the hoistway. Elevator device provided with. The method according to claim 1, The drive device is an elevator device which is disposed opposite the upper air supply and exhaust at the top of the hoistway. The method according to claim 2, And said ventilation duct also serves as a wiring duct for accommodating wiring connected to said drive device. The method according to claim 1, Elevator device is provided with a cooling fan in the ventilation duct. The method according to claim 1, And a control device having a cooling fan and installed in the hoistway opposite the lower supply / exhaust mechanism to control the drive device. The method according to claim 4 or 5, And the cooling fan is driven when the temperature at the top of the hoistway reaches a preset temperature. Drive device installed in the hoistway, An elevator car and a balance weight for elevating the inside of the hoistway by the driving device, and It has an upper end located above the platform entrance of the uppermost floor in the hoistway, and a lower end located below the upper end in the hoistway, and is disposed between the lifting area of the car and the lifting area of the counterweight. Elevator device provided with a partition plate. The method according to claim 1 or 7, Further comprising a control device for controlling the drive device, And the control device moves the car to the upper floor when the temperature at the top of the hoistway reaches a preset temperature, thereby causing the car and the balance weight to be ventilated.

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