JP4721198B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus provided with an airflow generation device.

  As an airflow generation device, a plasma airflow generation device using discharge plasma is known (see Patent Document 1 and Patent Document 2). The plasma airflow generation device includes a dielectric, two electrodes spaced apart from the dielectric, and an AC power source connected between the electrodes. When an AC voltage is applied between electrodes from an AC power source, an air flow is generated by the action of discharge plasma.

Moreover, there exists patent document 3 as an example which provided the airflow generator in the elevator car. The airflow generation device of Patent Document 3 generates ions for deodorization by application between electrodes for the purpose of deodorization in a car.
JP 2007-317656 A JP 2008-1354 A JP 2004-99205 A

  In the airflow generation device as described above, since a relatively high voltage is handled, it is dangerous if water is applied during operation, and it may cause a failure. In this case, if it is a general household electrical appliance, people will not touch the airflow generator directly, but in the case of an elevator, maintenance personnel may enter the hoistway for periodic inspections, etc. A high voltage airflow generator is very dangerous.

  In particular, in the case of an elevator, there is a high possibility that water will accidentally flow from the landing on each floor into the hoistway when cleaning the building. is there. In the airflow generation device of Patent Document 3 mentioned above, no particular mention is made of measures against such water wetting.

  As a measure against water wetting, it is conceivable to attach a waterproof cover. However, if a waterproof cover is attached to the airflow generation device, there is a problem that the generation of the airflow is hindered. In addition, there is a problem that it takes time to remove the waterproof cover when the maintenance staff inspects.

  This invention is made | formed in view of the above points, and it aims at providing the elevator apparatus which can ensure the safety | security with respect to the water of the airflow generator installed in the hoistway.

The elevator apparatus according to the present invention includes a car that moves up and down in a hoistway, an airflow generator that generates an airflow in a direction that reduces turbulence of airflow when the car travels, and water in the hoistway. Water detection means for detecting the inflow, abnormality detection means for detecting an abnormality in the voltage or current of the airflow generation device, the airflow generation device is driven when the car is running, and the water detection means Drive control means for stopping the driving of the airflow generator when an inflow of water into the road is detected or when an abnormality in the voltage or current of the airflow generator is detected by the abnormality detection means; It is characterized by having.

  According to the present invention, by detecting the inflow of water into the hoistway and controlling the stop of the driving of the airflow generator, it is possible to avoid leakage and failure when the airflow generator is in operation, Can be secured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a configuration of an elevator apparatus according to a first embodiment of the present invention, in which FIG. 1 (a) is a front view of a passenger car and FIG. 1 (b) is a passenger car traveling in a hoistway. It is the figure seen from the side.

  The elevator in the present embodiment includes a car 11 installed in the hoistway 10. The car 11 moves up and down in the hoistway 10 via a rope 12 by driving a hoisting machine (not shown). A car door 13 is provided in front of the car 11 so as to be slidable on the sill 14 in the horizontal direction.

  A plate-like panel 15 having a predetermined length is attached to the lower part of the sill 14 of the car door 13 in the downward direction. This panel 15 is a so-called “apron” and is used as a fall prevention plate.

  On the other hand, a landing door 21 is provided on the floor 20 side of each floor of the hoistway 10 so as to be slidable on the sill 22 in the horizontal direction. The landing door 21 is opened and closed by engaging with the car door 13 when the car 11 stops on each floor.

  A plate-like panel 23 having a predetermined length is attached to the lower portion of the sill 22 of the landing door 21 so as to face the panel 15 on the car 11 side in the downward direction.

  Reference numeral 24 in the figure denotes a narrow portion formed by a protrusion of the sill 22 in the hoistway 10. When the car 11 passes through the narrow portion 24, a local aerodynamic noise (buff sound) is generated, and there is a problem of giving uncomfortable feeling to passengers in the car 11 or passengers waiting at the landing. .

  In order to reduce such aerodynamic noise, an airflow generator 30 that generates a plasma airflow is installed at the lower end of the panel 15 of the car 11. Specifically, as shown in FIG. 1 (a), the airflow generator 30 flows toward the ascending direction of the car 11 in the vicinity of the center of the surface facing the landing 20 at the lower end of the panel 15. It arrange | positions so that (induced flow 36) may be generated. The air flow generation device 30 has a module structure based on an insulator such as ceramic, and the module portion is fixed to the panel 15 with screws or an adhesive.

  FIG. 2 shows the configuration of the airflow generation device 30.

  The airflow generation device 30 has a first electrode 32 exposed on the same plane as the surface of the dielectric 31, a distance from the electrode 32 and the surface of the dielectric 31, and a level with the surface of the dielectric 31. The second electrode 33 is spaced apart in the direction and embedded in the dielectric 31, and a discharge power source 35 that applies a voltage between the electrodes 32 and 33 via the cable 34.

  In such a configuration, when an AC voltage or an alternating voltage having a frequency equal to or lower than a predetermined value is applied between the electrodes 32 and 33 by the discharge power source 35, the surface of the airflow generation device 30 is caused by the action of plasma discharge between the electrodes 32 and 33. That is, an induced flow 36 that flows in one direction along the surface of the dielectric 31 is generated.

  Now, assuming the time when the car 11 is lowered, the function and effect of the airflow generator 30 will be described.

  3A and 3B are views showing the state of the airflow generated when the car 11 is lowered. FIG. 3A is the plasma OFF state, FIG. 3B is the plasma ON state, and FIG. 3C is the plasma double-side ON state. Is shown.

  As shown in FIG. 3A, when the front end of the panel 15 reaches the narrow portion 24 when the car 11 is lowered, the air dammed up at the front end of the panel 15 is peeled off and the car 31 It flows into the front and a local accelerated flow is generated in front of the car door 13. Further, a vertical vortex 37 is generated at the end of the panel 15, and the vertical vortex 37 further accelerates the speed increasing flow in front of the car door 13, and these speed increasing flows cause a large pressure fluctuation, and as a result Aerodynamic noise is generated.

  Here, as shown in FIG. 3 (b), when the induced flow 36 is generated in the direction opposite to the moving direction of the car 11 from the airflow generator 30 (that is, the ascending direction) when the car 11 is lowered, the panel The damming phenomenon at the front end portion of 15 is eliminated, and the air flow that peels off and flows from the front end portion can be smoothly diffused and reduced around the car. Thereby, a pressure fluctuation is relieved and aerodynamic noise can be suppressed as a result.

This is the same even when the car 11 is raised.
That is, when the tip of the car 11 reaches the narrow part 24 in the hoistway 10 when ascending, the airflow is disturbed and aerodynamic noise is generated. Therefore, aerodynamic noise can be reduced if the airflow generator 30 is provided on the surface of the front end of the car 11 facing the landing side and the induced flow 36 is generated in the downward direction when the car 11 is raised. is there.

  In general, the pressure fluctuation is larger at the time of lowering than at the time of rising. This depends on the structure of the building, but normally, air is blown from the bottom to the top in the hoistway 10, and when the car 11 descends there, the narrow portion 24 vertically extends to the side edge of the landing 20. This is because the vortex 37 grows rapidly and turns around.

  Therefore, another airflow generation device 30 may be added to the back surface (surface opposite to the landing) of the panel 15 so that the two airflow generation devices 30 are driven simultaneously when the car 51 is lowered. In this way, the function of the vertical vortex 37 generated at the side end of the panel 15 can be weakened. Therefore, as shown in FIG. 3C, the flow of air that peels off and flows from the front end of the panel 15 can be more smoothly diffused to reduce pressure fluctuations, and the generation of aerodynamic noise can be suppressed.

  By the way, in the airflow generation device 30, in order to handle a relatively high voltage, it is dangerous to get wet during operation, and it also causes a failure. In particular, as shown in the example of FIG. 1, when the airflow generation device 30 is installed on the car-side panel 15 toward the landing 20, the water flowing from the landing 20 to the hoistway 10 is flown to the airflow generation device 30. Very likely to take.

  Therefore, in the present embodiment, the water detection sensor 40 is installed in the vicinity of the landing door 21, specifically, the sill 22, and the inflow of water into the hoistway 10 is detected. Examples of the detection method include a method of measuring the resistance of water and a method of optically detecting the wavelength of light absorbed by moisture, but the present invention is particularly limited to these methods. It is not a thing.

  FIG. 4 is a block diagram showing the configuration of the control system of the airflow generation device 10.

  The elevator control device 41 is installed in a machine room of a building. The control device 41 is configured by a computer equipped with a CPU, ROM, RAM, and the like, and controls the operation of the entire elevator by starting a predetermined program, and here controls the driving of the airflow generation device 30.

  The car position detection device 42 detects the position of the car 11 in the hoistway 10 in real time based on a pulse signal output in synchronization with the rotation of the hoisting machine from a pulse encoder (not shown).

  The airflow drive device 43 drives the airflow generation device 10 in accordance with a drive instruction from the control device 41. The airflow driving device 43 includes a battery for supplying electric power necessary for driving the airflow generating device 10.

  Further, the control device 41 is connected to water detection sensors 40a, 40b, 40c ... installed in the vicinity of the landing doors 21 on each floor, and when one of these is detected, the air flow is detected. It is comprised so that the drive of the generator 30 may be stopped.

  The notification unit 44 is installed, for example, in a management room of a building, and notifies the fact that the airflow generation device 30 is in a stopped state by display or sound according to an instruction from the control device 50.

Below, the drive control of the airflow generator 30 is demonstrated.
FIG. 5 is a flowchart showing drive control of the airflow generation device 30 in the first embodiment.

  When the car 11 is lowered, the control device 41 drives the airflow generation device 30 through the airflow drive device 43. As a result, an induced flow 36 is generated in the upward direction of the car 11, and local aerodynamic noise (buffing) generated when the car 11 passes through the landing 20 (narrow part 24) on each floor is suppressed. It is done. The airflow generator 30 may be driven continuously when the car 11 is lowered, or may be intermittently performed when the car 11 passes through the landing 20 on each floor. The timing at which the car 11 passes through the landing 20 on each floor can be determined from the car position information detected by the car position detecting device 42.

  Here, when water flowing into the hoistway 10 from the landing 20 via the landing door 21 is detected by any of the water detection sensors 40a, 40b, 40c ... installed in the vicinity of the landing door 21 on each floor ( In step S11, the detection signal is output to the control device 41.

  When receiving the detection signal, the control device 41 immediately stops the driving of the airflow generation device 30 by the airflow driving device 43 (step S12). This is because when the plasma of the airflow driving device 43 is ON (that is, when a voltage is applied between the electrodes 32 and 33), there is a risk of electric leakage if water is applied, and this may cause a failure. Because it will be. At this time, it is assumed that the operation of the car 11 is continued as usual.

  When the airflow generation device 30 stops, the control device 41 waits until a predetermined time elapses (Yes in step S13). The predetermined time is a judgment time for automatic return and is set in advance, for example, about 30 minutes. If the water detection state is canceled during this time (Yes in step S14), the control device 41 drives the airflow generation device 30 again through the airflow driving device 43 (step S15).

  On the other hand, if the water detection state is not canceled even after the predetermined time has elapsed (No in step S14), the control device 41 notifies the outside through display or voice (step S16). . By this notification, for example, a building manager can contact an elevator maintenance company and have maintenance personnel come to check.

  Thus, in the elevator apparatus in which the airflow is generated from the airflow generation device 30 provided in the hoistway 10 in a direction to reduce the turbulence of the airflow during traveling and the noise is reduced, By detecting the inflow of water and stopping the driving of the airflow generation device 30, it is possible to prevent water from being applied to the airflow generation device 30 in operation. As a result, safety can be ensured by avoiding the risk of electric leakage and failure.

  In addition, after the air flow generation device 30 is stopped, the air flow generation device 30 is stopped with a small amount of water by automatically returning the air flow generation device 30 when the water detection state is canceled during a predetermined time. By avoiding this, the number of dispatches of maintenance personnel can be reduced.

  In the example of FIG. 1, the water detection sensor 40 is installed on the sill 22 of the landing door 21 on each floor, but the surface of the panel 23 attached in the descending direction along the hoistway 10 from the lower part of the sill 22 ( The water detection sensor 40 may be installed on the surface facing the car 11).

  Alternatively, the water detection sensor 40 may be installed on the car side. FIG. 6 shows an example in which the water detection sensor 40 is installed on the car side. In the example of FIG. 6, the water detection sensor 40 is installed on the sill 14 of the car door 13, but the surface of the panel 15 (the landing 20) attached from the lower part of the sill 14 along the hoistway 10. It is also possible to install the water detection sensor 40 on the opposite surface).

  Thus, even if it is the structure installed in the water detection sensor 40 at the car side, it is the same as the above by carrying out stop control of the drive of the airflow generator 30 based on the detection signal output from the water detection sensor 40 An effect can be obtained. Further, when the water detection sensor 40 is installed on the car side, there is an advantage that the water detection sensor 40 is not required for each floor and the cost can be reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the first embodiment, the water detection sensor 40 detects the inflow of water into the hoistway 10. However, when the water detection sensor 40 is out of order, it is also conceivable that water flows into the airflow generation device 30 from a place other than where the water detection sensor 40 is installed. Therefore, in the second embodiment, a case where water is actually applied to the airflow generation device 30 is dealt with.

  FIG. 7 is a diagram showing a configuration of the airflow generation device 30 in the second embodiment of the present invention. In FIG. 7, the same parts as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted. Further, since the configuration of the control system is the same as that in FIG. 4, only the control device 41 is shown here, and the other configurations are omitted.

  In the present embodiment, the abnormality detector 45 is incorporated in the airflow generation device 30. The abnormality detector 45 measures the voltage or current between the two electrodes 33 and 33 and outputs an abnormality signal to the control device 41 when the measured value exceeds a specified value. When the abnormality signal output from the abnormality detector 45 is input, the control device 41 controls the airflow driving device 43 so that the driving of the airflow generation device 30 is immediately stopped.

  As described above, the abnormality detector 45 is provided in the airflow generation device 30, and when the abnormality of the voltage or current is detected, the driving of the airflow generation device 30 is stopped, so that the water detection sensor 40 does not react. Even if it is, the safety | security with respect to the water of the airflow generator 30 can be ensured.

  When the abnormality detector 45 detects a voltage or current abnormality, the airflow generation device 30 is not automatically restored, and a notification is immediately made through the notification unit 44 to wait for maintenance personnel to arrive.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  In the first embodiment, the inflow of water is detected using the water detection sensor 40 installed in the hoistway 10. In contrast, in the third embodiment, the driving of the airflow generation device 30 is controlled to stop using an external detector that operates before water flows into the hoistway 10.

  FIG. 8 is a block diagram showing the configuration of the control system of the airflow generation device 10 according to the third embodiment of the present invention. In FIG. 8, the same parts as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  In this embodiment, a rain sensor 51, a fire detector 52, and a fire alarm 53 are connected to the control device 41 as external detectors that operate before water flows into the hoistway 10.

  The rain sensor 51 is installed on the roof of a building and operates when a rain amount of a certain amount or more is detected. Note that a commonly known method is used as a method for detecting the rainfall, and a specific method thereof is omitted.

  A large number of fire detectors 52 and fire alarms 53 are installed in each place in the building. The fire detector 52 is activated by detecting the occurrence of a fire. It detects heat (heat detector), detects smoke (smoke detector), detects flame (flame detector). At least one of the above. As these sensing methods, generally known methods are used, and specific methods thereof are omitted. The fire alarm 53 operates when the emergency button 53a is pressed, and notifies the occurrence of a fire by a bell sound or the like.

  The control device 41 controls the airflow driving device 43 so that the driving of the airflow generation device 30 is stopped when at least one of these external detectors 51, 52, and 53 is activated.

Below, the drive control of the airflow generator 30 is demonstrated.
FIG. 9 is a flowchart showing drive control of the airflow generation device 30 in the third embodiment.

  When the car 11 is lowered, the control device 41 drives the airflow generation device 30 through the airflow drive device 43. As a result, an induced flow 36 is generated in the upward direction of the car 11, and local aerodynamic noise (buffing) generated when the car 11 passes through the landing 20 (narrow part 24) on each floor is suppressed. It is done. The airflow generator 30 may be driven continuously when the car 11 is lowered, or may be intermittently performed when the car 11 passes through the landing 20 on each floor. The timing at which the car 11 passes through the landing 20 on each floor can be determined from the car position information detected by the car position detecting device 42.

  Here, when at least one of the external detectors 51, 52, and 53 installed in the building operates and the signal is input to the control device 41 (Yes in step S21), the control device 41 immediately The driving of the airflow generation device 30 by the driving device 43 is stopped (step S22).

  That is, for example, when a rain amount of a certain amount or more is detected by the rain sensor 51, rain water may enter the hoistway 10 and wet the air flow generator 30. As described above, when the plasma of the airflow driving device 43 is ON (that is, when a voltage is applied between the electrodes 32 and 33), there is a risk of electric leakage if water is applied, It can also be a cause. Therefore, when the rain sensor 51 detects a certain amount of rain, the driving of the airflow generator 30 is immediately stopped.

  At this time, the operation of the car 11 is switched to the rain control operation mode, moves to the nearest floor, stops, and then opens to drop the passenger. This rain control operation mode can be set as an option and need not be executed.

  In addition, when the fire detector 52 or the fire alarm 53 is activated, water for fire extinguishing is discharged by a sprinkler or the like installed on the ceiling of the building, and the water enters the hoistway 10 to generate an air flow generator. 30 may get wet. Then, when the fire detector 52 or the fire alarm 53 is activated, the driving of the airflow generator 30 is immediately stopped.

  At this time, the operation of the car 11 is switched to the fire control operation mode, moves to the nearest floor, stops, and then opens the door to drop the passenger. This fire control operation mode can be set as an option and need not be executed.

  When the airflow generation device 30 stops, the control device 41 waits until a predetermined time elapses (Yes in step S23). The predetermined time is a judgment time for automatic return and is set in advance, for example, about 30 minutes. If the operating state of the external detector is released during this time (Yes in step S24), the control device 41 drives the airflow generation device 30 again through the airflow driving device 43 (step S25).

  On the other hand, when the operating state is not released even after the predetermined time has elapsed (No in step S24), the control device 41 notifies the outside through display or voice (step S26). By this notification, for example, a building manager can contact an elevator maintenance company and have maintenance personnel come to check.

  In this way, even when the driving of the airflow generation device 30 is controlled to stop using the external detectors such as the rain sensor 51, the fire detector 52, and the fire alarm 53, the leakage current can be prevented as in the first embodiment. Safety can be ensured by avoiding danger. Further, by stopping the airflow generation device 30, it is possible to prevent failure due to water wetting as much as possible.

  Furthermore, when the operation of the external detector is canceled during a predetermined time after the airflow generation device 30 is stopped, the airflow generation device 30 is automatically returned to cause the airflow generation device 30 to malfunction due to a malfunction of the external detector. It is possible to avoid stopping and reduce the number of dispatches of maintenance personnel.

  In the third embodiment, the rain sensor 51, the fire detector 52, and the fire alarm 53 are taken as examples of the external detector. However, the external detector may operate before water flows into the hoistway 10. For example, other detectors may be used.

  In addition to the configuration of the third embodiment, an abnormality detector 45 may be provided in the configuration of the second embodiment, that is, the airflow generation device 30. In this way, even when the external detector does not react due to a failure or the like, it can be reliably stopped when the airflow generator 30 is wet.

  Furthermore, the configuration of the first embodiment may be combined. Actually, a configuration in which the above embodiments are combined is most preferable for safety.

  Further, in each of the above embodiments, the operation when the car 11 is lowered has been described as an example. However, the same is true when the car 11 is raised, and noise can be reduced by generating a plasma airflow in the ascending direction. Safety can be ensured by water detection.

  Moreover, in each said embodiment, as shown in FIG. 1, the installation location of the airflow generation apparatus 30 is not restricted to the lower end part of the passenger car 11, and may be an upper end part, or even the landing side panel 23. good. In short, it may be installed anywhere in the hoistway 10 as long as noise generated during traveling can be reduced by controlling the airflow.

  Further, the airflow generation device is not limited to one using discharge plasma, and may be a synthetic jet device, for example.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a diagram showing a configuration of an elevator apparatus according to a first embodiment of the present invention. FIG. 1 (a) is a front view of a car, and FIG. 1 (b) is a car traveling in a hoistway. It is the figure seen from the side. FIG. 2 is a diagram illustrating a configuration of an airflow generation device provided in the elevator apparatus according to the embodiment. 3A and 3B are views showing the state of airflow generated when the car is lowered in the embodiment. FIG. 3A is a plasma OFF state, FIG. 3B is a plasma ON state, and FIG. It is a figure which shows the state of ON. FIG. 4 is a block diagram showing a configuration of a control system of the airflow generation device in the same embodiment. FIG. 5 is a flowchart showing drive control of the airflow generation device in the same embodiment. FIG. 6 is a view showing the configuration of the elevator apparatus when the water detection sensor according to the embodiment is installed on the car side, FIG. 6 (a) is a front view of the car, and FIG. 6 (b) is inside the hoistway. It is the figure which looked at the cage | basket | car which drive | routes from the side. FIG. 7 is a diagram showing a configuration of an airflow generation device according to the second embodiment of the present invention. FIG. 8 is a block diagram showing the configuration of the control system of the airflow generation device according to the third embodiment of the present invention. FIG. 9 is a flowchart showing drive control of the airflow generation device in the same embodiment.

Explanation of symbols

  10 ... hoistway, 11 ... car, 12 ... rope, 13 ... car door, 14 ... sill, 15 ... panel, 20 ... landing, 21 ... landing door, 22 ... sill, 23 ... panel, 24 ... narrow part, 30 DESCRIPTION OF SYMBOLS ... Airflow generator, 31 ... Dielectric, 32, 33 ... Electrode, 34 ... Cable, 35 ... Power supply for discharge, 36 ... Inductive flow, 37 ... Longitudinal vortex, 40 ... Water detection sensor, 41 ... Control device, 42 ... Car Position detection device, 43 ... Airflow drive device, 44 ... Notification unit, 45 ... Abnormality detector, 51 ... Rain sensor, 52 ... Fire detector, 53 ... Fire alarm, 53a ... Emergency button.

Claims (9)

A car that moves up and down in the hoistway,
An airflow generator that generates airflow in a direction that reduces turbulence of the airflow when the car is running,
Water detection means for detecting that water has flowed into the hoistway;
An abnormality detection means for detecting an abnormality in the voltage or current of the airflow generator;
When the airflow generator is driven when the car is running and the water detection means detects the inflow of water into the hoistway , or the abnormality detection means detects the voltage or current of the airflow generator. An elevator apparatus comprising: drive control means for stopping the driving of the airflow generation device when an abnormality is detected .   The drive control means drives the airflow generation apparatus again when the water detection state by the water detection means is canceled during a preset time after the airflow generation apparatus is stopped. The elevator apparatus according to claim 1.   The elevator apparatus according to claim 2, further comprising a notification means for notifying the outside when the water detection state by the water detection means is not canceled even after the set time has elapsed.   2. The elevator apparatus according to claim 1, wherein the water detection means is installed near a landing on each floor in the hoistway.   2. The elevator apparatus according to claim 1, wherein the water detection means is installed on a surface facing the platform of the car. It is installed in a building and includes external detection means that operates before water flows into the hoistway.
2. The elevator apparatus according to claim 1, wherein the drive control means stops driving the airflow generation device when the external detection means is activated. 7. The elevator apparatus according to claim 6 , wherein the external detection means is installed on the roof of the building and operates when a certain amount of rainfall is detected. 7. The elevator apparatus according to claim 6 , wherein the external detection means is installed in the building and operates by sensing the occurrence of a fire. 7. The elevator apparatus according to claim 6 , wherein the external detection means is installed in the building and is activated by a button operation to notify the occurrence of a fire.

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