JP6335258B1 - Elevator and hoistway exhaust method - Google Patents

Abstract

[PROBLEMS] To enable more efficient flue gas with a simple configuration, and to prevent smoke entering the hoistway or temperature rise due to fire from affecting the control panel of the elevator arranged in the hoistway. Provide an elevator that can. An elevator according to an embodiment includes a hoistway, an intake device, a control panel, an exhaust door, and a switching control unit. In the hoistway, a hoisting machine for raising and lowering the elevator car is disposed on the hoistway wall. At least one intake device is provided that can inhale outside air different from the air on the landing side of the car on the hoistway. The control panel is arranged so that the lower end is located at a position higher than the floor of the landing on the top floor among the landings, and controls the operation of the elevator. The exhaust door can open and close an exhaust port provided in the hoistway wall so that at least a part of the side surface of the control panel faces a space where outside air exists. The switching control unit controls the intake operation of the intake device and the opening / closing operation of the exhaust door. [Selection] Figure 1

Description

  Embodiments described herein relate generally to an elevator and a hoistway exhaust method.

  There has been proposed an elevator having a structure for exhausting smoke using a smoke exhaust duct formed in a hoistway of an elevator when a fire occurs in a building where the elevator is installed.

JP2012-180135A

  In an elevator provided with the above-described smoke exhaust structure, if more efficient smoke exhaust is possible with a simpler configuration, it is easy to introduce and meaningful. At the same time, even when the temperature inside the hoistway rises due to the heat of smoke that has entered the hoistway or the temperature rise due to fire, an elevator that can reduce the influence on the control panel of the elevator placed in the hoistway If it can be provided, the damage caused by fire can be reduced, which is more meaningful.

The elevator according to the embodiment includes a hoistway, an intake device, a control panel, an exhaust door, and a switching control unit. In the hoistway, a hoisting machine for raising and lowering the elevator car is disposed on the hoistway wall. At least one intake device is provided that can inhale outside air different from the air on the landing side of the car on the hoistway. The control panel is arranged so that the lower end is located at a position higher than the floor of the landing on the top floor among the landings, and controls the operation of the elevator. The exhaust door can open and close an exhaust port provided in the hoistway wall so that at least a part of the side surface of the control panel faces a space in which outside air exists via a gap . The switching control unit controls the intake operation of the intake device and the opening / closing operation of the exhaust door.

Drawing 1 is a mimetic diagram showing the composition of the elevator of an embodiment. FIG. 2 is a partial schematic diagram illustrating the position of the pressure sensor disposed in the elevator according to the embodiment. FIG. 3 is a functional block diagram of the elevator control panel according to the embodiment. FIG. 4 is a flowchart for explaining the smoke exhausting operation of the elevator according to the embodiment.

  Below, the exhaust method of the elevator and hoistway which concern on embodiment is demonstrated in detail based on drawing. The constituent elements in this embodiment include those that can be easily replaced by those skilled in the art or that are substantially the same, and the present invention is not limited to the following embodiments.

  Drawing 1 is a mimetic diagram showing composition of elevator 10 of an embodiment. The elevator 10 moves up and down a hoistway 12 installed in a building (a building, a condominium, etc.) and moves between landings 18 provided on the floor 16 of each floor. The elevator 10 is configured as a so-called elevator elevator in which a car 14 and a counterweight 20 are connected by a main rope 22.

  The hoistway 12 forms a space surrounded by four hoistway walls 12a provided along the vertical direction of the building where the elevator 10 is installed. The space surrounded by the hoistway wall 12a is provided so as to straddle the floors 16 of the plurality of landings 18 in the building so that the vertical direction of the hoistway 12 becomes the elevating direction of the car 14. On the hoistway wall 12a, a guide rail 24 is installed that extends in the elevating direction and serves as a guide when the car 14 moves up and down. The guide rails 24 are provided, for example, at positions corresponding to the left and right outer wall surfaces (the wall surface on which the car door is not provided) of the car 14. Similarly, on the hoistway wall 12a, a weight guide rail 26 extending in the ascending / descending direction as a guide when the counterweight 20 ascends / descends is installed. The weight guide rail 26 is parallel to the guide rail 24 and is arranged so as to guide the counterweight 20 at a position where the raising / lowering of the counterweight 20 does not hinder the raising / lowering of the car 14. The counterweight 20 is a counterweight connected to the car 14 via the main rope 22 and moves up and down in conjunction with the car 14 in the hoistway 12.

  For example, a hook-shaped hoisting machine bracket 28a is fixed to an upper portion of the guide rail 24, for example, a position higher than the landing 18n on the top floor, and includes a hoisting machine 30 (including a motor, a main sheave, etc.) that moves the car 14 up and down. ) Is supported (fixed). An auxiliary bracket 28b that supports the deflecting sheave 32 is fixed to the guide rail 24 below the hoisting machine bracket 28a. The hoisting machine bracket 28a and the auxiliary bracket 28b may be an integrated bracket. Therefore, it can be said that the elevator 10 of the present embodiment is a “machine room-less” elevator that does not include a machine room in which the hoisting machine 30 and the like are accommodated.

  In the position corresponding to the landing 18 on each floor of the hoistway wall 12a, for example, a rectangular landing opening 12b is provided. When the car 14 moves to the landing 18 on each floor and stops, the car door ( (Not shown) coincides with the position of the landing opening 12b. Each platform 18 is provided with a platform door 34 that can be opened and closed so as to block the platform opening 12b. The landing door 34 is normally in a closed state, and its operation to the open state is restricted by a lock mechanism (not shown). Thus, the landing door 34 normally blocks between the landing 18 side and the hoistway 12 side. The landing door 34 is released from the closed state to the open state in conjunction with the unlocking of the lock mechanism in conjunction with the car 14 arriving at the destination floor and the car door operating from the closed state to the open state.

  Each landing 18 is provided with a landing panel 18a (see FIG. 3) connected to a control panel 38 supported by a control panel bracket 36 fixed to the guide rail 24 and the like via a wireless or wired network. It has been. The landing operation panel 18a is an input device that is operated when a user calls the car 14 to the landing 18 where the user is located. Similarly, the car 14 is provided with an in-car operation panel 14a (see FIG. 3). The in-car operation panel 14a is an input device used when a user who has entered the car 14 designates a destination floor or opens / closes a car door.

  The car 14 has, for example, a box shape in which a user and luggage can be placed, and a car opening that allows the user and luggage to enter and exit is formed between the inside of the car 14 and the landing 18. ing. An openable / closable car door is provided so as to close the car opening.

  The control panel 38 is prepared in advance, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory) that stores a predetermined control program in advance, a RAM (Random Access Memory) that temporarily stores a calculation result of the CPU. A microcomputer having a backup RAM for storing information such as reference data and elevator 10 specifications and an input / output port device, a drive circuit, and the like. The control board 38 is electrically connected to various parts of the various sensors, detectors, and elevators 10, and comprehensively controls the operation of each part.

  The control panel 38 is installed in the hoistway 12 by, for example, a bowl-shaped control panel bracket 36 provided on the guide rail 24 or the like. In this case, the control panel 38 is a position that does not hinder the raising and lowering of the car 14 and the counterweight 20 in the hoistway 12, and is a position higher than the floor surface 16n of the uppermost landing 18n in the landing 18 (line G The lower end 38a (the lower surface of the storage box) of the control panel 38 is disposed at a higher position. By installing the control panel 38 at such a high place, for example, even if a fire or the like occurs in a building where the elevator 10 is installed, and fire extinguishing work is performed at the landing 18 or its surroundings, the fire extinguishing water is supplied to the control panel. Thus, it is possible to easily avoid the occurrence of damage to 38. The control panel bracket 36 may be provided on the hoistway wall 12a, for example, as long as the lower end 38a of the control panel 38 is disposed at a position higher than the line G of the top floor 16n.

  The hoistway wall 12a is provided with an exhaust port 40 that communicates with a space (for example, outdoors) in which outside air different from the air on the landing 18 side exists. The exhaust port 40 is normally closed by an exhaust door 42 that can be opened and closed by an actuator such as a motor or a cylinder. That is, when the exhaust door 42 is closed, the hoistway 12 is substantially blocked from communicating with the outside air. On the other hand, when the exhaust door 42 is opened, the hoistway 12 communicates with the outside air, and the air in the hoistway 12 can be discharged. That is, the movement of air in the hoistway 12 can be generated. In the case of the present embodiment, the exhaust port 40 (exhaust door 42) is formed on the hoistway wall 12a so that at least a part (for example, the back surface 38b) of the side surface of the control panel 38 faces a space (for example, outdoors) where outside air exists. Is provided. In FIG. 1, although exaggerated for explanation, a gap is formed between the exhaust port 40 and the control panel 38 (rear surface 38 b) facing (facing) the exhaust port 40, and the exhaust door When 42 is opened, the air in the hoistway 12 passes through the periphery of the control panel 38 and is exhausted from the exhaust port 40. At this time, the control panel 38 can be cooled by the flow of air exhausted from the exhaust port 40. Further, since the control panel 38 is supported by the control panel bracket 36 so as to face the space where the outside air exists, it is easy to come into contact with the outside air when the exhaust door 42 is opened, and the cooling efficiency of the control panel 38 is improved. Can do. As described above, according to the configuration of the present embodiment, the elevator 10 without the machine room is installed in the hoistway 12 that may be heated by the influence of fire (the influence of flame or hot smoke). It is possible to efficiently cool the control panel 38.

  The hoistway wall 12a is provided with at least one intake device 44. In the case of FIG. 1, for example, three intake devices 44 are illustrated. The intake device 44 is provided to be able to intake outside air different from the air on the landing 18 side. The air sucked by the intake device 44 may be air different from the air on the landing 18 side, and may be air in a space (outdoors) facing the exhaust port 40 or air in a space isolated from the inside of the building, for example. By performing the intake by the intake device 44, the inside of the hoistway 12 can be set to a positive pressure. In this case, the exhaust door 42 is closed.

  By setting the inside of the hoistway 12 to a positive pressure, for example, when a fire occurs in a building and smoke is present at the landing 18, the smoke passes through the landing opening 12 b from the landing 18 where the pressure is lower than that of the hoistway 12. Intrusion into the hoistway 12 can be reduced or prevented. That is, a gap generated around the landing door 34 provided to be able to close the landing opening 12b can be closed with the air seal. As a result, it becomes easy to avoid smoke existing on the fire floor from entering the hoistway 12 and spreading to other floors that have not yet spread. Furthermore, by opening the exhaust door 42 intermittently after the inside of the hoistway 12 is set to a positive pressure, for example, before the inside of the hoistway 12 is sufficiently pressurized, Even when smoke has entered, by opening the exhaust door 42, it is possible to create a flow of air from the hoistway 12 having a higher pressure toward an external space (for example, outdoors) having a lower pressure. As a result, smoke can be efficiently discharged from the exhaust port 40. In this respect as well, smoke existing on the fire floor can be prevented from entering other floors. In addition, since such an air flow passes around the control panel 38 facing the exhaust port 40, the cooling efficiency of the control panel 38 can be improved.

  The intake capacity of the intake device 44 is such that a pressure state necessary for suppressing the intrusion of smoke from the landing opening 12b and discharging the smoke from the exhaust port 40 can be realized within a predetermined period. Selected. In the case of FIG. 1, three intake devices 44 are shown as an example, but depending on the volume of the hoistway 12, the sealed state of the hoistway 12 when the exhaust door 42 is closed, and the like. Ability and number may be determined. Accordingly, one or more intake devices 44 may be provided. For example, the number corresponding to the number of landings 18 may be provided.

  As shown in FIG. 1, an auxiliary opening 46 and an auxiliary opening / closing door 48 for opening and closing the auxiliary opening 46 may be provided as separate openings at a position higher than the exhaust port 40 of the hoistway wall 12 a. . As described above, in order to improve the cooling efficiency of the control panel 38, the exhaust port 40 (exhaust door 42) is provided at a position where a part of the side surface of the control panel 38 faces. On the other hand, since smoke and heat (heated air) generated in a fire or the like tend to rise, if there is a space above the exhaust port 40, there may be a case where a smoke or a heat reservoir is created there. The auxiliary opening 46 (auxiliary opening / closing door 48) is provided so as to eliminate this smoke accumulation and heat accumulation. As shown in FIG. 1, since the hoisting machine 30 is also installed at the upper part of the hoistway 12, the auxiliary opening 46 (auxiliary opening / closing door 48) cools the hoisting machine 30 during exhaust. Can be done. The auxiliary opening / closing door 48 is desirably closed at least when the exhaust door 42 is closed. In the hoistway 12, when the control panel 38 can be installed at a higher position, the position of the exhaust port 40 (exhaust door 42) also moves to an upper position corresponding to the position of the control panel 38. In this case, the auxiliary opening 46 and the auxiliary opening / closing door 48 can be omitted.

  As described above, by sucking outside air into the hoistway 12 by the intake device 44 and making it into a positive pressure state, it is possible to perform smoke intrusion from the landing opening 12b and efficient exhaust from the exhaust port 40. . In this case, it is desirable that a sufficient pressure difference is generated between the inside and the outside of the hoistway 12. Whether or not a sufficient pressure difference is generated inside and outside the hoistway 12 can be determined by, for example, the drive time of the intake device 44. Therefore, for example, the pressure state in the hoistway 12 is estimated based on a timer that measures a period (time) after the fire information is acquired, and the control of the intake device 44 and the exhaust door 42 (auxiliary open / close door 48). Can be controlled. However, if some landing doors 34 are open or if there is damage such as cracks or cracks in a part of the hoistway 12, the pressurization speed may vary. Therefore, in another embodiment, as shown in FIG. 2, the pressure state in the hoistway 12 is detected using a pressure sensor 50 (an external air pressure sensor 50 a and an internal air pressure sensor 50 b) disposed in the hoistway 12. Thus, drive control of the intake device 44 and open / close control of the exhaust door 42 (auxiliary open / close door 48) may be performed. In FIG. 2, the pressure state of the hoistway 12 is detected by the differential pressure between the external atmospheric pressure sensor 50 a provided outside the exhaust port 40 and the internal atmospheric pressure sensor 50 b provided inside the exhaust port 40. By opening the exhaust door 42 on the condition that “the detection value of the external air pressure sensor 50 a <the detection value of the internal air pressure sensor 50 b”, the air flowing from the hoistway 12 to the outside air side through the exhaust port 40 is opened. A flow can be reliably formed, and efficient smoke removal and cooling of the control panel 38 by the air flow can be performed. In another embodiment, the external air pressure sensor 50a may be omitted, and the pressure state in the hoistway 12 may be detected by comparing the detected value of the internal air pressure sensor 50b with the standard atmospheric pressure. Thus, when detecting the pressure state of the hoistway 12, the pressure sensor 50 may be used instead of the above-described estimation by the timer, or the estimation by the timer and the detection by the pressure sensor 50 depending on the situation at the time of a fire. You may make it use properly. Note that the positions of the pressure sensors 50 (the external air pressure sensor 50a and the internal air pressure sensor 50b) are merely examples, and if the internal and external pressure states of the hoistway 12 can be detected, the installation position may be changed as appropriate, and similar effects are obtained. Can be obtained.

  FIG. 3 is a functional block diagram of the control panel 38 of the elevator 10 configured as described above. The control panel 38 includes an operation control unit 60, a car call registration unit 62, a hoistway environment control unit 64, and the like. Further, the hoistway environment control unit 64 includes an information acquisition unit 66, an intake control unit 68, an exhaust port control unit 70, a switching control unit 72, and the like.

  The operation control unit 60 controls the rotation direction, rotation speed, rotation amount, braking state, etc. of the motor of the hoisting machine 30 according to the landing call registration and the car call registration registered in the car call registration unit 62. 14 runs. The car call registration unit 62 registers information corresponding to the hall call registration input by the user via the hall call registration SW (switch) 18b provided in the hall operation panel 18a provided in each hall 18. The landing call registration SW 18b is, for example, a button or a switch on a touch panel, but is not limited thereto. Further, the car call registration unit 62 uses a car call input by the user to designate a destination floor via the car call registration SW (switch) 14b of the car operation panel 14a provided in the car 14. Register the information corresponding to the registration. The car call registration SW 14b is, for example, a button or a switch on a touch panel, but is not limited thereto.

  The hoistway environment control unit 64 mainly suppresses the intrusion of smoke into the hoistway 12 by controlling the environment inside the hoistway 12 when a fire occurs in the building where the elevator 10 is installed. When the smoke has entered, smoke exhaust, cooling of the control panel 38, etc. are executed at an appropriate timing.

  The information acquisition unit 66 outputs fire information (occurrence information, fire spread information, etc.) output when a fire occurs on the building side from the alarm control unit 74a of the building side management device 74 on the building side where the elevator 10 is installed. A signal based on the acquired information is transmitted to the switching control unit 72 through a wireless or wired network. Further, when the fire information is acquired, the information acquisition unit 66 starts acquiring the external air pressure value from the external air pressure sensor 50a, and starts acquiring the internal air pressure value inside the hoistway 12 from the internal air pressure sensor 50b. Note that the information acquisition unit 66 may always detect the internal pressure sensor 50b. For example, when the pressure inside the hoistway 12 rises regardless of the fire, the exhaust door 42 may be opened to return the pressure inside the hoistway 12 to atmospheric pressure. In addition, a temperature sensor that detects the temperature inside the hoistway 12 and the temperature of the control panel 38 may be provided, and the information acquisition unit 66 may acquire temperature information together. For example, when the temperature of the control panel 38 or the hoisting machine 30 becomes equal to or higher than a predetermined value regardless of the fire, the intake device 44, the exhaust door 42, and the auxiliary opening / closing door 48 are opened to enter the hoistway 12 inside. The control panel 38 and the hoisting machine 30 may be cooled by forcibly creating an air flow.

  The intake control unit 68 controls the operating state of the intake device 44. For example, ON / OFF control of the fan of the intake device 44, adjustment of the intake capacity, and the like are performed. For example, when the time until the pressure inside the hoistway 12 reaches a predetermined pressure becomes longer than a predetermined time for some reason, the intake capacity of the intake device 44 may be temporarily increased. Further, some of the intake devices 44 may be stopped according to the pressure state inside the hoistway 12. The exhaust port control unit 70 controls the open / close state of the exhaust door 42 and the auxiliary opening / closing door 48. For example, actuators such as motors and cylinders are controlled to perform opening / closing operations of the exhaust door 42 and the auxiliary opening / closing door 48. Note that the exhaust door 42 and the auxiliary opening / closing door 48 may be maintained in an arbitrary open state such as a fully open state or a half open state. For example, if the pressurization in the hoistway 12 cannot reach a predetermined value for some reason, the exhaust air flow rate is increased by restricting the opening degree of the exhaust door 42 or the auxiliary opening / closing door 48, and the exhaust air is discharged when the pressurization is insufficient. You may make it improve smoke efficiency and cooling efficiency.

  The switching control unit 72 sends a signal for determining the control content of the intake control unit 68 and the exhaust port control unit 70 based on the information acquired by the information acquisition unit 66. When the fire control information (occurrence information) is acquired from the information acquisition unit 66, the switching control unit 72 starts a timer 72a and outputs a signal instructing the intake control unit 68 to start intake by the intake device 44. Send it out. At the same time, the switching control unit 72 sends a signal indicating that the exhaust door 42 and the auxiliary opening / closing door 48 are closed to the exhaust port control unit 70. When the information acquisition unit 66 can acquire a pressure value from the pressure sensor 50, the pressure detection unit 72b of the switching control unit 72 sends a signal to the intake control unit 68 based on the detected actual pressure inside the hoistway 12. Or a signal to the exhaust port control unit 70 is transmitted.

  The operation control unit 60 may acquire the fire information and the like via the information acquisition unit 66 and execute the operation in the fire mode such as the determination of the emergency stop floor of the car 14 or the determination of the blame driving. Then, the fire information or the like may be acquired directly from the building management device 74 and reflected in the operation of the car 14. In addition, a notification unit 78 may be connected to the in-hoistway environment control unit 64, and information such as fire information and an exhaust state in the hoistway 12 may be output to the notification output unit 76. The notification output unit 76 can be a display device or a speaker provided in the car 14, the landing 18 or the like.

  A method of exhausting the hoistway 12 of the elevator 10 configured as described above will be described with reference to the flowchart of FIG. In the example shown in FIG. 4, when the pressure state of the hoistway 12 can be detected by the pressure sensor 50, priority is given to the determination based on the pressure, and the operation control of the intake device 44 and the opening / closing control of the exhaust door 42 are executed. An example in which control using the timer 72a is performed when the pressure state inside the hoistway 12 is not stable, when the pressure does not reach a predetermined pressure, or when a pressure value cannot be obtained will be described.

  If the information acquisition unit 66 cannot acquire the fire notification from the building-side management device 74, that is, if no fire has occurred (No in S100), the information acquisition unit 66 ends this flow once and whether or not the fire notification is acquired. Continue monitoring. On the other hand, the information acquisition part 66 provides the switch control part 72 with the signal which shows having acquired, when the fire alert | report from the building side management apparatus 74 can be acquired (Yes of S100). Then, the switching control unit 72 starts the intake drive using the intake device 44 via the intake control unit 68 (S102). That is, positive pressure inside the hoistway 12 is executed. In this case, driving of the intake device 44 is started, the exhaust door 42 and the auxiliary opening / closing door 48 are closed, outside air is taken into the hoistway 12 and the inside of the hoistway 12 is pressurized. Furthermore, the switching control unit 72 determines whether or not the pressure value of the hoistway 12 can be acquired from the pressure sensor 50 via the information acquisition unit 66 (S104). When the pressure value in the hoistway 12 cannot be acquired (No in S104), the switching control unit 72 starts the timer 72a (S106) and pressurizes the hoistway 12 until a predetermined period elapses (S108). No). By increasing the pressure inside the hoistway 12 by the intake air drive of the air intake device 44, smoke that may be present in the fire occurrence floor is prevented from entering the hoistway 12 from the landing opening 12b.

  When a predetermined period (predetermined time, for example, 5 minutes) has elapsed since the timer 72a started (Yes in S108), that is, when the intake condition is satisfied, the switching control unit 72 temporarily resets the timer 72a ( (S110), a signal for temporarily stopping the drive of the intake device 44 is sent to the intake control unit 68, and the drive of the intake device 44 is stopped (S112). Subsequently, the switching control unit 72 opens the exhaust door 42 for a predetermined period (predetermined time, for example, 30 seconds) (S114), and from the exhaust port 40 to the hoistway 12 due to the differential pressure between the inside of the hoistway 12 and the outside air side. Vent internal air. By opening the exhaust door 42 in a state where the inside of the hoistway 12 is at a positive pressure with respect to the outside air side (for example, outdoors), the air inside the hoistway 12 moves from the exhaust port 40 to the outside air side. To do. As a result, smoke that has entered the hoistway 12 before the hoistway 12 is sufficiently pressurized can be put on the air flow and discharged to the outside air side. In addition, since the air flow passes around the control panel 38 arranged so that a part of the side faces the exhaust port 40, the control panel 38 can be cooled together.

  When the fire notification is continued when a predetermined period has elapsed from the opening operation of the exhaust door 42 (Yes in S116), the process returns to S102, and the switching control unit 72 performs the intake operation again. That is, the intake device 44 is driven and the exhaust door 42 (auxiliary opening / closing door 48) is closed to pressurize the hoistway 12 inside. In other words, the pressurization and pressure release of the hoistway 12 are repeatedly executed until the influence of the fire is eliminated, and the suppression of the smoke intrusion into the hoistway 12 and the discharge of the invading smoke and the cooling of the control panel 38 are repeated. Do. If the fire notification is canceled (No in S116), this flow is temporarily terminated. In this case, the notification unit 78 may output a message that prompts the inspection of the elevator 10 after the fire through the notification output unit 76.

  In S104, when the pressure value of the hoistway 12 can be obtained from the pressure sensor 50 via the information acquisition unit 66 (Yes in S104), the switching control unit 72 determines whether the pressure inside the hoistway 12 has reached a predetermined pressure. If the predetermined pressure is reached (Yes in S118), that is, if the intake condition is satisfied, the process proceeds to S112. That is, the process after S112 is performed, the intake by the intake device 44 is stopped, and the process of opening the exhaust door 42 (auxiliary opening / closing door 48) is performed.

  Moreover, the switching control part 72 is the case where the inside of the hoistway 12 has not reached the predetermined pressure via the pressure detection part 72b (No in S118), and when the predetermined period has elapsed from the start of pressure measurement (Yes in S120). Then, since the malfunction of the intake device 44 or the sealed state of the hoistway 12 cannot be maintained for some reason, it is determined that the pressurization has taken time, and the process proceeds to S112 to execute the smoke exhausting process. In other words, the smoke that has entered the hoistway 12 and the cooling of the control panel 38 are executed using the currently reached pressure difference. In S120, when the predetermined period has not yet elapsed (No in S120), the process proceeds to S116 and waits for the pressure to reach the predetermined pressure.

  In the case where the intake device 44 and the exhaust door 42 (auxiliary opening / closing door 48) are controlled according to the elapsed time (time) from the acquisition of the fire notification without providing the pressure sensor 50, S104, S118, and S120 from FIG. Control is executed according to the deleted flowchart. On the contrary, when the intake device 44 and the exhaust door 42 (auxiliary opening / closing door 48) are controlled by pressure detection by the pressure sensor 50, the control is executed according to a flowchart in which S104, S106, S108, and S110 are deleted from FIG.

  Thus, according to the exhaust method of the hoistway 12 of the present embodiment, the pressurization (positive pressure) inside the hoistway 12 by the intake air of the intake device 44 and the exhaust and decompression by the opening operation of the exhaust door 42 are repeated. Thus, the intrusion of smoke from the fire floor to the hoistway 12 can be suppressed, and if smoke intrudes, the diffusion of smoke to other floors can be suppressed by exhausting (exhaust). In addition, when exhaust is performed by providing an exhaust fan in the hoistway 12, the hoistway 12 may have a negative pressure due to the exhaust, and smoke may be actively sucked from the landing opening 12b. On the other hand, in this embodiment, since the hoistway 12 is pressurized, such a phenomenon can also be avoided. Further, the control panel 38 can be cooled by using the air flow accompanying the exhaust from the hoistway 12 through the exhaust port 40. As a result, it is possible to reduce damage to the control panel 38 due to the temperature rise inside the hoistway 12 when a fire occurs. If there is no pressure difference between the hoistway 12 and the outside air side, the air flow is stopped. Therefore, compared to the case where the air flow is continuously generated by an exhaust fan or the like, smoke is sucked from the landing opening 12b. It is reduced.

  The exhaust port control unit 70 may perform the opening / closing operation of the auxiliary opening / closing door 48 in response to the opening / closing operation of the exhaust door 42. In this case, it is possible to discharge smoke or heat accumulation that may occur in the upper part of the hoistway 12 from the auxiliary opening 46 to the outside air side. Further, the hoisting machine 30 and the like can also be cooled by the air flow at this time.

  Moreover, the elevator 10 of this embodiment suppresses the penetration | invasion of the smoke to the hoistway 12, and the spreading | diffusion of the smoke to another floor by controlling a pressure state, without accompanying the big structural change of the hoistway 12. FIG. In addition, the auxiliary opening / closing door 48 can be cooled. That is, smoke treatment and cooling can be performed efficiently while maintaining the simplicity of the structure of the elevator 10. As a result, there is an advantage that the elevator 10 can be easily introduced into the building.

  In addition, according to the exhaust method of the hoistway 12 mentioned above, the example which repeats the pressurization in the hoistway 12 by the suction | inhalation of the intake device 44 and the exhaust_gas | exhaustion by the opening operation of the exhaust door 42, and pressure reduction automatically by acquisition of a fire alert | report. However, based on the fire notification, the administrator of the elevator 10 executes the pressurization in the hoistway 12 by the intake air of the intake device 44 and the exhaust and decompression by the opening operation of the exhaust door 42 (auxiliary opening / closing door 48). It may be.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Elevator, 12 ... Hoistway, 12a ... Hoistway wall, 12b ... Platform opening part, 14 ... Riding car, 16 ... Floor surface, 18 ... Platform, 24 ... Guide rail, 28a ... Hoisting machine bracket, 36 ... Control Panel bracket, 38 ... Control panel, 40 ... Exhaust port, 42 ... Exhaust door, 44 ... Intake device, 50 ... Pressure sensor, 64 ... Environment control unit in hoistway, 66 ... Information acquisition unit, 68 ... Intake control unit, 70 ... Exhaust port control unit, 72 ... Switch control unit, 72a ... Timer, 74 ... Building-side management device.

Claims (5)

A hoistway in which a hoist for raising and lowering an elevator car is disposed on a hoistway wall; and at least one intake device capable of inhaling outside air different from the air on the landing side of the car into the hoistway; A control panel for controlling the operation of the elevator arranged such that the lower end is positioned at a position higher than the floor surface of the top floor of the platform, and a space in which at least a part of the side surface of the control panel has the outside air An exhaust door capable of opening and closing an exhaust port provided in the hoistway wall so as to approach the space through a gap, and a switching control unit for controlling an intake operation of the intake device and an open / close operation of the exhaust door , Including elevators.   The switching control unit executes switching control between the intake operation and the opening / closing operation of the exhaust door when the building-side fire information is acquired from a management device on the building side where the elevator is installed. The elevator described.   The elevator according to claim 1 or 2, wherein the switching control unit opens the exhaust door after the intake device performs an intake operation for a predetermined period.   The elevator according to any one of claims 1 to 3, further comprising a sensor that detects a pressure difference between an inner pressure of the hoistway and a pressure in a space where the outside air exists. An information acquisition step for acquiring fire information on the building side from a management device on the side of the building where the elevator is installed, and a hoisting machine that lifts and lowers the elevator car when the fire information is acquired on the hoistway wall An intake step for inhaling outside air different from the elevator side air of the elevator car into the arranged hoistway, and when a predetermined intake condition is satisfied, from the floor of the top floor of the landing The hoistway wall is arranged such that at least a part of the side surface of the control panel that controls the operation of the elevator, which is arranged so that the lower end is located at a high position, faces the space where the outside air exists through a gap. An exhaust step for exhausting the hoistway, comprising: an exhaust step of opening an exhaust port provided to exhaust air in the hoistway.

Images