JP4933239B2 - Elevator car ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a fear of giving uncomfortable feeling or a health problem to a passenger in a car, when a confining accident with a power failure accident occurs. <P>SOLUTION: An air conditioner 8 is operated during normal operation, and a solenoid 12 is not excited, so that ventilation path switch valves 15, 16 do not shut off a first duct 9 and a second duct 10 at a middle portion. Therefore, the ventilation path is a circulation path indicated by a dotted line arrow. Upon power failure, the operation of the air conditioner 8 is stopped. Furthermore, the ventilation path switch valves 15, 16 are driven by the exciting of the solenoid 12, and an exhaust gas ventilation fan 11 is operated. The ventilation path, as indicated by the dotted line arrow, reaches the inside of the car 1 from an outside air introducing port 14 by the shortest path, and is discharged to the outside by the exhaust gas ventilation fan 11. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an elevator car ventilator equipped with an air conditioner.

  The interior of the elevator car in the state where the door is closed is in a closed room state that is almost shut off from the outside, although there is a slight gap near the door. Therefore, if a passenger is confined in such a closed room for a long time, the passenger not only feels uncomfortable but also may cause a health problem. In order to prevent such a situation, for example, in the elevator car according to Patent Document 1, it is possible to start the operation of the blower when a confinement accident occurs and to introduce fresh outside air into the car room.

  FIG. 6 is a schematic diagram showing the configuration of Patent Document 1. As shown in FIG. A ceiling member 102 is disposed in the upper part of the passenger car 101, and an air inlet 103 and an air outlet 104 are formed between the ceiling member 102 and the inner wall portion. The circulating air A1 sucked upward from the air inlet 103 is heat-exchanged by the air conditioner 105 and then returned to the car room through the air outlet 104.

When a confinement accident occurs, the operation of the blower 106 is started, and the introduced outside air A2 taken from the outside by the blower 106 joins with the circulated air A1 discharged from the cooling / heating device 105, and the car interior is discharged from the exhaust port 104. It is sent to. Therefore, the air in the car room is kept fresh by the introduced outside air A2.
JP-A-4-41384

  However, the conventional configuration of FIG. 6 according to Patent Document 1 starts the operation of the blower 106 while the operation of the cooling and heating apparatus 105 is continued. That is, Patent Document 1 does not assume a confinement accident that accompanies a power outage.

  As is well known, many of the confinement accidents occur with the occurrence of an earthquake, and the probability of a power outage is higher when an earthquake occurs than when it is normal. In addition, a confinement accident may occur due to a power failure unrelated to an earthquake. In the conventional configuration of Patent Document 1 described above, it is impossible to effectively deal with a confinement accident involving such a power outage, which not only causes discomfort to passengers in the car room, but also causes health problems. There is also a fear.

  The present invention has been made in view of the above circumstances, and an elevator capable of reducing the possibility of causing discomfort and health problems to passengers in a car room when a confinement accident involving a power failure occurs. It aims to provide a cage ventilation system.

  As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that an air conditioner disposed outside a car room and communicated with a suction port and an exhaust port inside the car room via a duct, respectively, and outside the car room. Battery installed as an emergency power source and an exhaust ventilation fan that is installed in the middle of the duct and operated by power supply from the battery during a power failure, and an exhaust ventilation fan that is installed in the middle of the duct and operated by the exhaust ventilation fan The outside air inlet for introducing outside air into the car room and the duct are provided inside the duct. In normal operation, the air inlet and the exhaust port are connected to the air conditioner, and the exhaust ventilation fan and the outside air inlet are connected. By shutting off, a ventilation path for normal operation via the air conditioner is formed. And a ventilation path switching valve for switching the ventilation path so as to form a ventilation path for power failure via the exhaust ventilation fan and the outside air inlet by communicating with the outside air inlet. It is characterized by.

  The invention according to claim 2 is the invention according to claim 1, wherein the ventilation path switching valve receives the electromagnetic force of a solenoid excited by power supply from the battery at the time of a power failure, and is used for a power failure from the ventilation path for a normal operation. Switching to a ventilation path is performed.

  The invention described in claim 3 is characterized in that, in the invention described in claim 1, an outside air introduction ventilation fan operated by power supply from a battery at the time of a power failure is attached to the outside air introduction port.

  The invention according to claim 4 is characterized in that, in the invention according to claim 1, the exhaust ventilation fan is capable of switching the rotation direction by a manual operation in a car room.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, the battery is stored by a power converter that supplies power to the air conditioner during normal operation.

  According to a sixth aspect of the present invention, in the first aspect of the invention, the ventilation path switching valve performs a switching operation from the normal operation ventilation path to the blackout ventilation path by manual operation in the car room during a power failure. It is characterized by being.

  The invention according to claim 7 is the invention according to claim 1, characterized in that the exhaust ventilation fan is capable of speed control in a plurality of stages.

  According to the present invention, when a power outage occurs, the exhaust ventilation fan powered by the battery is operated in a state where the power outage route is formed, and the outside air is introduced from the outside air introduction port. It is possible to reduce the risk of discomfort and health problems.

  FIG. 1 is a front view showing a main part configuration of an elevator car ventilating apparatus according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of arrows II-II in FIG.

  As shown in FIG. 1, a side frame 2 and an upper frame 3 are disposed around a car room 1, and the car room 1 is supported by these frame members. One end side of the rope 4 is attached to the upper surface side of the upper frame 3, and when the rope 4 is wound up by a hoisting machine (not shown), the car room 1 moves up and down in the hoistway. It has become.

  A ceiling portion 5 in which a lighting device is accommodated is disposed in the upper portion of the cab 1, and an intake port 6 and an exhaust port 7 are formed between the ceiling portion 5 and the inner wall portion of the cab 1. . An air conditioner 8 is attached to the lower surface side of the upper frame 3. The air conditioner 8 is in communication with the intake port 6 and the exhaust port 7 via a first duct 9 and a second duct 10, respectively.

  An exhaust ventilation fan 11 is attached to an intermediate portion of the first duct 9, and a solenoid 12 is disposed adjacent to the exhaust ventilation fan 11. The solenoid 12 drives a ventilation path switching valve described later. A battery 13 as an emergency power supply is disposed near the solenoid 12 so that power can be supplied from the battery 13 to the solenoid 12 and the exhaust ventilation fan 11. An outside air introduction port 14 is attached to an intermediate portion of the second duct 10 adjacent to the solenoid 12, and outside air introduced from the outside air introduction port 14 passes through the second duct 10 from the exhaust port 7. It is designed to be sent into the car room.

  FIG. 3 is an explanatory diagram of a ventilation path switching valve and a ventilation path during normal operation, where (a) is a view taken along the line III-III in FIG. 1, and (b) is a view taken along the line bb in FIG. (C) is a top view of the ventilation path | route which showed a part of duct as a crushing cross section. In FIG. 5C, illustration of the battery 13, the outside air inlet 14 and the like is omitted.

  As shown in FIGS. 3A and 3B, a ventilation path switching valve 15 is disposed in the first duct 9, and a ventilation path switching valve 16 is disposed in the second duct 10. These ventilation path switching valves 15 and 16 are substantially L-shaped, and their upper ends are fixed to the actuator 12 a of the solenoid 12.

  And the ventilation path switching valves 15 and 16 shown to Fig.3 (a), (b) are the states pulled up above the 1st duct 9 and the 2nd duct 10 by the actuator 12a. Therefore, the air can freely pass through the first duct 9 and the second duct 10, but the route to the exhaust ventilation fan 11 and the route from the outside air inlet 14 are the ventilation route switching valve 15. , 16 are blocked by the horizontal portions.

  Therefore, as shown by a dotted arrow in FIG. 3C, the air sucked from the intake port 6 is sent to the air conditioner 8 through the first duct 9 to be heat exchanged and blown out from the air conditioner 8. The air thus passed through the second duct 10 is sent into the car room from the exhaust port 7. That is, the ventilation path during normal operation is the same as when the ventilation path switching valves 15 and 16 are not attached.

  FIG. 4 is an explanatory diagram of a ventilation path switching valve and a ventilation path at the time of a power failure, (a) is a view taken in the direction of arrows III-III in FIG. 1, (b) is a view taken in the direction of arrows bb in (a), (C) is a top view of a ventilation path.

  The ventilation path switching valves 15 and 16 shown in FIGS. 4A and 4B are pushed down to the bottom surfaces of the first duct 9 and the second duct 10 by the actuator 12a. In this state, the vertical portion of the ventilation path switching valve 15 shuts off the intake port 6 from the air conditioner 8, makes the intake port 6 communicate with the exhaust ventilation fan 11, and the ventilation path switching valve 16. The vertical portion of the air outlet cuts off the exhaust port 7 from the air conditioner 8 and communicates the exhaust port 7 with the outside air introduction port 14.

  Therefore, as shown by a dotted arrow in FIG. 4C, the air sucked from the intake port 6 is discharged from the exhaust ventilation fan 11 to the outside through the first duct 9. Then, since the air in the car room is exhausted and thinned by the exhaust ventilation fan 11, the outside air is naturally introduced from the outside air introduction port 14, and is sent into the car room 1 from the exhaust port 7 through the second duct 10. It is supposed to be.

  FIG. 5 is a schematic diagram of the embodiment of the present invention configured as described above, where (a) is an explanatory diagram during normal operation, and (b) is an explanatory diagram during a power failure. Based on this figure, the operation of the embodiment of the present invention will be described.

  The power failure detection circuit 17 is normally provided in a control panel in which the elevator control device is accommodated, but may be provided in other places. This power failure detection circuit 17 outputs a power failure detection signal when the power supply voltage of the elevator falls below a predetermined level, and a switch SW interposed between the battery 13 and the exhaust ventilation fan 11 and the solenoid 12 is turned on. It comes to turn on. In FIG. 5, the exhaust ventilation fan 11 and the solenoid 12 are connected in parallel to the battery 13, but the exhaust ventilation fan 11 and the solenoid 12 may be connected in series.

  First, in FIG. 5A, when the power failure is not in a power failure state, the power failure detection circuit 17 does not output a power failure detection signal, so the switch SW is off, and the battery 13 is connected to the exhaust ventilation fan 11 and the solenoid 12. In a non-powered state. Therefore, during normal operation, the exhaust ventilation fan 11 is not operated, and the solenoid 12 is in a non-excited state. Since the solenoid 12 is in a non-excited state, the ventilation path switching valves 15 and 16 keep the first duct 9 and the second duct 10 open, respectively, and the exhaust ventilation fan 11 and the outside air inlet 14. Is shut off.

  Further, since the air conditioner 8 is in operation, the air in the cab 1 is sent from the intake port 6 through the first duct 9 to the air conditioner 8 and is exchanged in the air conditioner 8 to be blown out. Is sent through the second duct 10 from the exhaust port 7 into the car room. That is, the ventilation route during normal operation is a route that is circulated as shown by the dotted arrows in FIG.

  Note that, during normal operation, power is supplied to the air conditioner 8 from a power converter (not shown), but the battery 13 always maintains a battery voltage of a certain level or higher by the power supplied from the power converter. Is stored.

  Next, in FIG. 5B, when a power failure occurs during the normal operation of the elevator as described above, the operation of the elevator is stopped and the operation of the air conditioner 8 is also stopped. Then, the power failure detection circuit 17 immediately outputs a power failure detection signal and turns on the switch SW. As a result, the battery 13 is in a power supply state with respect to the exhaust ventilation fan 11 and the solenoid 12. Therefore, at the time of a power failure, the exhaust ventilation fan 11 is operated and the solenoid 12 is in an excited state. Since the solenoid 12 is in an excited state, the ventilation path switching valves 15 and 16 respectively cut off the first duct 9 and the second duct 10 in the middle, and the intake port 6 and the exhaust port 7 are respectively connected to the exhaust ventilation fan. 11 and the outside air inlet 14 are in communication.

  Due to the operation of the exhaust ventilation fan 11, stagnant air in the cab 1 is discharged to the outside, and this causes an air flow in the cab 1 so that outside air is naturally introduced from the outside air inlet 14. Then, the air is sent into the car room 1 from the exhaust port 7 through the second duct 10. That is, as shown by the dotted arrows in FIG. 5B, the ventilation path at the time of power failure reaches the inside of the car room 1 through the shortest path from the outside air inlet 14, and the air in the car room 1 is the shortest. The path is such that the exhaust fan 11 is exhausted to the outside.

  When the power failure is restored, the power failure detection signal is not output from the power failure detection circuit 17, so that the switch SW is turned off. Accordingly, the positions of the ventilation path switching valves 15 and 16 are restored to the positions shown in FIG. 5A, and the operation of the exhaust ventilation fan 11 is stopped. The battery 13 is charged until the battery voltage again reaches a certain level or higher by supplying power from the power converter described above.

  As described above, according to the embodiment of the present invention, when a power failure occurs, the exhaust ventilation fan 11 using the battery 13 as a power source is operated in a state where the power failure ventilation path is formed, and the outside air inlet 14 Since outside air is introduced, it is possible to reduce the possibility of causing discomfort and health problems for passengers in the cab 1.

  1 and 2, the configuration of the embodiment of the present invention includes an exhaust ventilation fan 11, a solenoid 12, and a battery in the middle of the first duct 9 and the second duct 10. 13, and can be realized by attaching the outside air inlet 14 and the ventilation path switching valves 15 and 16. Therefore, the elevator car ventilator according to this embodiment can be easily applied not only to new elevator equipment but also to existing elevator equipment.

  The configuration of the embodiment of the present invention is generally as described above, but the present invention also broadly includes the following modes.

(1) In the above embodiment, the air in the cab 1 is discharged to the outside by the exhaust ventilation fan 11 so that the outside air is naturally sent into the cab 1 from the outside air inlet 14. However, as with the exhaust ventilation fan 11, the “outside air introduction ventilation fan” that is operated by receiving power from the battery 13 in the event of a power failure is attached to the outside air inlet 14 to forcibly send outside air into the cab 1. It is also possible to adopt. However, in that case, it is preferable to use a battery 13 having a sufficiently large capacity.

(2) Although it is assumed that the exhaust ventilation fan 11 in the above embodiment uses a fan whose rotation direction is only a fixed direction, a fan whose rotation direction can be switched by a passenger's manual operation is used. You may make it do. According to this, the exhaust ventilation fan 11 can also function as an “external air introduction ventilation fan”.

(3) In the above embodiment, the switch SW is turned on by the power failure detection signal from the power failure detection circuit 17, and the ventilation path switching valves 15 and 16 are switched by the electromagnetic force when the solenoid 12 is excited. It has become. However, when a disaster such as an earthquake occurs, the ventilation path switching valves 15 and 16 may not operate smoothly due to a contact failure of the switch SW or a catch. Therefore, a configuration may be adopted in which a manual operation mechanism is provided within the reach of the passenger near the ceiling 5 and the passenger can forcibly switch the ventilation path switching valves 15 and 16 by manual operation.

(4) As the exhaust ventilation fan 11 in the above embodiment, it is assumed that a fan capable of only constant speed operation is used. You may make it do. According to this, the exhaust ventilation fan 11 can be operated at an appropriate number of revolutions according to the request of the passenger in the cab 1.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the principal part structure of the elevator car interior ventilation apparatus which concerns on embodiment of this invention. II-II arrow line view in FIG. It is explanatory drawing about the ventilation path switching valve and ventilation path at the time of normal operation of embodiment of this invention, (a) is the III-III arrow directional view of FIG. 1, (b) is the bb arrow of (a). FIG. 3C is a plan view of a ventilation path showing a part of the duct as a fractured cross section. It is explanatory drawing about the ventilation path switching valve and ventilation path at the time of the power failure of embodiment of this invention, (a) is a III-III arrow line view of FIG. 1, (b) is a bb arrow line view of (a). Fig. 3 (c) is a plan view of the ventilation path. It is a schematic diagram for demonstrating operation | movement of embodiment of this invention, (a) is explanatory drawing at the time of normal operation, (b) is explanatory drawing at the time of a power failure. Schematic which shows the structure of a conventional apparatus.

Explanation of symbols

1: Car compartment 2: Side frame 3: Upper frame 4: Rope 5: Ceiling part 6 Air inlet 7: Air outlet 8: Air conditioner 9: First duct 10: Second duct 11: Exhaust ventilation fan 12 : Solenoid 12a: Actuator 13: Battery 14: Outside air inlet 15, 16: Ventilation path switching valve 17: Power failure detection circuit SW: Switch

Claims (7)

An air conditioner disposed outside the car room and communicated to the air intake and exhaust of the car through ducts;
A battery as an emergency power supply disposed outside the car room;
An exhaust ventilation fan attached to the middle of the duct and operated by power supply from the battery during a power failure;
An outside air inlet that is attached to an intermediate portion of the duct and for introducing outside air into the car room by operation of the exhaust ventilation fan;
It is arranged inside the duct, and communicates the air intake and exhaust ports to the air conditioner during normal operation and shuts off the exhaust ventilation fan and outside air introduction port through the air conditioner. A normal operation ventilation path is formed. On the other hand, in the event of a power failure, the air intake and exhaust are shut off from the air conditioner and communicated with the exhaust ventilation fan and the outside air inlet. A ventilation path switching valve that performs a switching operation of the ventilation path so as to form a ventilation path for power failure via the ventilation fan and the outside air inlet,
The elevator car ventilator characterized by comprising. The ventilation path switching valve receives electromagnetic force of a solenoid excited by power supply from the battery at the time of a power failure, and performs a switching operation from the ventilation path for normal operation to the ventilation path for power failure.
The elevator car ventilator according to claim 1. At the outside air introduction port, a ventilation fan for introducing outside air operated by power supply from the battery at the time of a power failure was attached.
The elevator car ventilator according to claim 1. The exhaust ventilation fan is capable of switching the rotation direction by manual operation in a car room.
The elevator car ventilator according to claim 1. The battery is charged by a power converter that supplies power to the air conditioner during normal operation.
The elevator car ventilator according to claim 1. The ventilation path switching valve performs a switching operation from the ventilation path for normal operation to the ventilation path for power failure by manual operation in a car room during a power failure.
The elevator car ventilator according to claim 1. The exhaust ventilation fan is capable of speed control in multiple stages.
The elevator car interior ventilation control device according to claim 1.

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