JP5591739B2 - Elevator smoke exhaust device, elevator and elevator smoke exhaust method - Google Patents

Description

  Embodiments described herein relate generally to an elevator smoke exhaust device, an elevator, and an elevator smoke exhaust method.

  When a fire breaks out in a building where an elevator is installed, the smoke on the floor where the fire occurs may travel along the elevator hoistway and spread to the floor where there is no fire. In addition, when the elevator hoistway is filled with smoke, the elevator cannot be used for fire fighting and rescue activities. These problems cause a particularly serious situation in high-rise buildings.

  In this regard, a technique has been proposed in which the air pressure inside the hoistway is increased from the lowermost part of the hoistway by a fan and smoke is discharged from an opening provided at the uppermost part of the hoistway.

JP 2000-289949 A

  However, in high-rise buildings, there is a concern that smoke spreads while pressurizing the hoistway. Further, discharging smoke generated in the lower floor from the opening provided on the uppermost floor causes the hoistway between them to fill up with smoke, so that the elevator cannot be used in an emergency.

  Therefore, an object of the present embodiment is to provide an elevator smoke exhaust device that can efficiently exhaust smoke generated during a fire from a hoistway, an elevator, and an elevator smoke exhaust method.

In order to solve the above-described problems, an embodiment includes a cage room, a weight, a rope that lifts the cage room and the weight, a hoist that winds the rope, a hoistway that raises and lowers the cage room, and a landing side door. An elevator control unit that controls the operation of the elevator, a smoke exhaust duct that is provided from the lower floor to the upper floor along the height direction of the elevator hoistway, and is divided into the hoistway and the hoistway of the exhaust duct A plurality of smoke doors that are provided on the facing side and open when smoke is exhausted, an air flow generator that is provided in the smoke exhaust duct and generates an air current that exhausts the air in the smoke exhaust duct to the outside of the smoke exhaust duct; is installed at the lower end of the hoistway, the hoistway higher and pressurizing pressure device the air pressure inside than the internal pressure of the flue gas duct, and a first atmosphere sensor for detecting the internal pressure of the flue gas duct, hoistway Second atmospheric pressure to detect the internal atmospheric pressure Elevator comprising a capacitors, and a control unit for controlling the pressure device to press higher pressure than the internal pressure of the flue gas duct internal pressure of the hoistway on the basis of the output of the first atmosphere sensor, and the second atmosphere sensor, the I will provide a.

It is a side view of an elevator. It is a side view of a smoke exhaust door. It is a perspective view of smoke exhaust door vicinity. It is a block diagram which shows the structure of an elevator smoke exhaust apparatus.

  Hereinafter, an embodiment of an elevator smoke exhaust device, an elevator, and an elevator smoke exhaust method will be described in detail with reference to the drawings.

  One embodiment of the elevator of the present embodiment includes a cage room, a weight, a rope that lifts the cage room and the weight, a hoist that winds up the rope, a hoistway that raises and lowers the cage room, a landing-side door, and an elevator An elevator control unit that controls the operation, a smoke exhaust duct that is provided from the lower floor to the upper floor along the height direction of the elevator hoistway, and is separated from the hoistway, and a side surface that faces the hoistway of the smoke duct A plurality of smoke doors that are opened when smoke is exhausted, an air flow generator that is provided in the smoke exhaust duct and generates an air current that exhausts the air in the smoke exhaust duct to the outside of the smoke exhaust duct, and the lower end of the hoistway And a pressurizing device that pressurizes the air pressure inside the hoistway higher than the air pressure inside the smoke exhaust duct.

  FIG. 1 is a side view of an elevator 100 according to the present embodiment. As shown in FIG. 1, an elevator 100 includes a cage room 101 in which passengers are placed, a weight 103, a rope 106 that lifts the cage room 101 and the weight 103, a hoisting machine 102 that winds up the rope 106, and the cage room 101 moves up and down. A hoistway 110, a landing side door 104, a step unit 105 installed below the landing side door 104, a control unit 107 for controlling the operation of the elevator, and a lower floor along the height direction of the hoistway 110 To the upper floors, and the smoke exhaust duct 201 partitioned from the hoistway 110, the plurality of smoke exhaust doors 202 provided on the side of the smoke exhaust duct 201 facing the hoistway 110, and the smoke exhaust duct 201. The duct fan 203 which is an air flow generating device for generating an air flow for discharging the air in the smoke exhaust duct 201 to the outside of the smoke exhaust duct 201, and the hoistway 11 , A hoistway fan 205 that is a pressurizing device that pressurizes the air pressure of the hoistway 110, a duct sensor 206 that is a first air pressure sensor that detects the air pressure in the smoke exhaust duct 201, and the hoistway 110. And a hoistway sensor 207 which is a second atmospheric pressure sensor for detecting the atmospheric pressure.

  The basket room 101 includes a basket room side door 101A and an engagement device 101B installed on the hoistway 110 side of the basket room side door 101A.

  The landing-side door 104 includes a protrusion 104A that engages with the engagement device 101B on the hoistway 110 side.

  The control unit 107 raises and lowers the basket room 101 to the designated destination floor. When the basket room 101 arrives at the destination floor, the engaging device 101B and the protrusion 104A are engaged. When the cage room side door 101A opens and closes in this state, the landing side door 104 follows and opens and closes.

  The smoke exhaust duct 201 is provided along the height direction of the hoistway 110, that is, along the vertical direction. The smoke exhaust duct 201 is preferably provided from the lowest floor to the highest floor. The internal space of the smoke exhaust duct 201 is partitioned from the hoistway 110 when the smoke exhaust door 202 is all closed. Therefore, when all the smoke exhaust doors 202 are closed, the air in the hoistway 110 and the air in the smoke exhaust duct 201 are not mixed.

  The smoke exhaust duct 201 includes a plurality of smoke exhaust doors 202 at positions suitable for discharging smoke entering from each floor on the side surface facing the hoistway 110. The position suitable for discharging smoke entering from each floor is, for example, a height higher than the position of the landing-side door 104 on each floor.

  It is desirable to provide more smoke exhaust doors 202 than the number of landing side doors 104 on each floor. The smoke exhaust door 202 opens and closes in accordance with instructions from the control unit 107.

  The exhaust duct 201 may be provided with an exhaust fan as a duct fan 203 at the upper part of the exhaust duct 201, preferably at the top of the exhaust duct 201. The exhaust fan exhausts the air inside the smoke exhaust duct 201 to the outside of the elevator 100.

  The exhaust duct 201 may be provided with an intake fan as a duct fan 203 below the exhaust fan of the exhaust duct 201, preferably at the bottom of the exhaust duct 201. The intake fan sucks air outside the elevator 100 into the smoke exhaust duct 201.

  The duct fan 203 may include either an exhaust fan or an intake fan, or both.

  It is desirable that the duct sensor 206 be installed at the same height as the hoistway sensor 207 from the viewpoint of not causing a measurement error.

  The control unit 107 compares the air pressure detected by the duct sensor 206 and the hoistway sensor 207, and the duct fan 203 and the hoistway fan so that the air pressure inside the smoke exhaust duct 201 becomes lower than the air pressure inside the hoistway 110. 205 is controlled. In order to obtain a smoke exhaust effect while saving electric power, the control unit 107, for example, increases the duct fan 203 and the elevating and lowering so that the air pressure inside the smoke exhaust duct 201 is lower than the air pressure inside the hoistway 110 by 40 Pa or more and 50 Pa or less. The road fan 205 can be controlled. Note that there may be more atmospheric pressure differences.

  The hoistway fan 205 is desirably provided at the lower end of the hoistway 110, that is, below the lowermost floor in terms of smoke emission efficiency.

  The air sucked by the hoistway fan 205 flows in the direction of the arrow X1, and pressurizes the air pressure of the hoistway 110.

  The duct fan 203 generates an air flow in the direction of the arrow X2 from the lower side of the smoke exhaust duct 201 to the upper side.

  The control unit 107 inputs information on the floor F1 where a fire has occurred, for example, input from a fire alarm. The control unit 107 reads the ID of the smoke door 202 at a position suitable for exhausting the smoke S generated at the fire occurrence floor F1 from the memory, and opens the smoke door 202 corresponding to this ID.

  Here, the control unit 107 may control the degree of opening of the plurality of smoke exhaust doors 202. For example, the smoke exhaust door 202 immediately adjacent to the fire occurrence floor F1 may be fully opened, and the smoke exhaust door 202 adjacent to the smoke exhaust door 202 may be controlled to be half open.

  Further, according to the value input from the smoke detector, when there is a lot of smoke, it can be controlled to open the nearest smoke exhaust door 202 to the floor F2 other than the fire occurrence floor F1.

  FIG. 2 is a side view of the smoke exhaust door 202. As shown in FIG. 2, the smoke exhaust door 202 includes a shutter 202B, a door pocket 202A that stores the shutter 202B, and a smoke exhaust door drive unit 202C that opens and closes the shutter 202B. The shutter 202B includes teeth 202B1 that mesh with the gears of the smoke door driving unit 202C.

  When the smoke door driving unit 202C rotates in the direction of the arrow X5, the shutter 202B is displaced in the direction of the arrow X6, and the smoke door 202 is opened.

  FIG. 3 is a perspective view of the vicinity of the smoke exhaust door 202. As shown in FIG. 3, the smoke exhaust door 202 is provided on a side surface of the smoke exhaust duct 201 facing the hoistway 110. When the shutter 202B is opened, the hoistway 110 and the smoke exhaust duct 201 are connected, and the smoke in the hoistway 110 is sucked into the smoke exhaust duct 201.

  FIG. 4 is a block diagram showing the configuration of the elevator smoke exhaust device. As shown in FIG. 4, the elevator smoke exhaust device included in the elevator 100 includes an interface (I) that communicates with the CPU 401 as the control unit 107, the memory 402 as a storage device, and the fire alarm and the control panel of the elevator 100. / F) 403.

  The CPU 401 inputs outputs from the duct sensor 206 and the hoistway sensor 207. The CPU 401 controls the rotational speeds of the duct fan 203 and the hoistway fan 205. The CPU 401 controls the smoke door driving unit 202C of each smoke door 202.

  As described above, the elevator 100 according to this embodiment is provided from the lower floor to the upper floor along the height direction of the hoistway 110 and the control unit 107 that controls the operation of the elevator, and is partitioned from the hoistway 110. The flue gas duct 201, the plural flue gas doors 202 provided on the side facing the hoistway 110 of the flue gas duct 201, and the flue gas duct 201 are provided in the flue gas duct 201. A duct fan 203 that generates an airflow to be discharged to the outside, a hoistway fan 205 that is installed below the hoistway 110 and pressurizes the air pressure of the hoistway 110, and a duct sensor 206 that detects the air pressure in the smoke exhaust duct 201. And a hoistway sensor 207 for detecting the air pressure in the hoistway 110.

  Therefore, according to this embodiment, the smoke generated at the time of a fire can be efficiently exhausted from the hoistway 110, and the effect that the return of smoke to the floor other than the floor where the fire occurred can be prevented. is there.

  Although several embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the 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.

101: basket room 102: hoisting machine 104: landing side door 105: step unit 107: control unit 201: smoke exhaust duct 202: smoke exhaust door 203: duct fan 205: hoistway fan

Claims (9)

A smoke exhaust duct provided from the lower floor to the upper floor along the height direction of the elevator hoistway, and separated from the hoistway,
A plurality of smoke exhaust doors provided on the side of the smoke exhaust duct facing the hoistway, and opened at the time of smoke exhaust;
An airflow generation device that is provided in the smoke exhaust duct and generates an air current that exhausts air in the smoke exhaust duct to the outside of the smoke exhaust duct;
Said installed in the lower end of the hoistway, the hoistway inside the high pressurizing pressure device than the internal pressure of the flue gas duct a pressure,
A first atmospheric pressure sensor for detecting an atmospheric pressure inside the smoke exhaust duct;
A second atmospheric pressure sensor for detecting an atmospheric pressure inside the hoistway;
A controller that controls the pressurization device so as to pressurize the air pressure inside the hoistway higher than the air pressure inside the smoke exhaust duct based on the outputs of the first air pressure sensor and the second air pressure sensor;
Elevator smoke exhaust device. The controller is
Fire occurrence floor of the nearest of the exhaust Kemuritobira elevator smoke apparatus 請 Motomeko 1, wherein you open the event of a fire the. The controller is
The elevator smoke exhausting device according to claim 2, wherein the degree of opening of the plurality of smoke exhaust doors is controlled when a fire occurs. A basket room,
A weight,
A rope for lifting the basket chamber and the weight;
A hoisting machine for hoisting the rope;
A hoistway in which the basket room moves up and down;
A landing door,
An elevator controller for controlling the operation of the elevator;
A smoke exhaust duct provided from the lower floor to the upper floor along the height direction of the elevator hoistway, and separated from the hoistway,
A plurality of smoke exhaust doors provided on the side of the smoke exhaust duct facing the hoistway, and opened at the time of smoke exhaust;
An airflow generating device that is provided in the smoke exhaust duct and generates an air current that exhausts the air in the smoke exhaust duct to the outside of the smoke exhaust duct;
Said installed in the lower end of the hoistway, the hoistway inside the high pressurizing pressure device than the internal pressure of the flue gas duct a pressure,
A first atmospheric pressure sensor for detecting an atmospheric pressure inside the smoke exhaust duct;
A second atmospheric pressure sensor for detecting an atmospheric pressure inside the hoistway;
A controller that controls the pressurization device so as to pressurize the air pressure inside the hoistway higher than the air pressure inside the smoke exhaust duct based on the outputs of the first air pressure sensor and the second air pressure sensor;
Elevator equipped with. The controller is
The elevator according to claim 4 , wherein the smoke exhaust door immediately adjacent to the fire occurrence floor is opened when a fire occurs. The controller is
The elevator according to claim 5 , wherein the degree of opening of the plurality of smoke exhaust doors is controlled when a fire occurs. A first atmospheric pressure sensor which is provided from the lower floor to the upper floor along the height direction of the elevator hoistway and detects the air pressure inside the smoke exhaust duct partitioned from the hoistway, and the air pressure inside the hoistway Based on the output from the second atmospheric pressure sensor for detecting the pressure, a pressure device installed at the lower end of the hoistway is controlled so as to pressurize the air pressure inside the hoistway higher than the air pressure inside the smoke exhaust duct. lower than pressure of the hoistway by,
Open a part of the plurality of smoke exhaust doors provided on the side facing the hoistway of the smoke exhaust duct,
A method of exhausting smoke from an elevator, wherein smoke generated at a fire occurrence floor is caused to flow into the smoke exhaust duct from the hoistway. The elevator smoke exhausting method according to claim 7, wherein the smoke exhaust door immediately adjacent to the fire occurrence floor is opened when a fire occurs. The elevator smoke exhausting method according to claim 8 , wherein the degree of opening of the plurality of smoke exhaust doors is controlled when a fire occurs.

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