JP2017077419A - Operation box of gas-based fire extinguishing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation box of a gas-based fire extinguishing facility, easily openable while connecting emergency telephone call and easily openable with light force against magnet catch.SOLUTION: An operation box 12 is characterized in that: an operation indication part 24 is provided in approximately a half of an upper side of a table panel 22 of an operation box body 20; a storage part 26 recessed to a predetermined depth is formed in approximately a half of a lower side; the storage part 26 is covered by rotatably supporting one side edge with a hinge 30 to laterally provide a door 28 in an opening and closing manner; and the door 28 is cut out in a rectangle at a position biased to the upper part of the end of the left hand side to form a handle opening 32. A telephone jack 36 is provided in a position in the storage part 26 exposed outside being the vicinity of the upper inside corner in the handle opening 32 of the door 28. A starting switch 38 with a protective cover is provided in a position in the storage part 26 covered in a closed state of the door 28. A magnet catch 34 is provided in the position in the storage part 26 at the lower side of the handle opening 32 and substantially the center in the horizontal direction of the door 28, and the door 28 is held in a closed position by magnetic attraction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an operation box of a gas fire extinguishing equipment that extinguishes a fire by releasing a fire extinguishing gas such as carbon dioxide into a plurality of protective compartments.

  Conventionally, gas fire extinguishing equipment that extinguishes a fire by releasing a fire extinguishing gas such as carbon dioxide or halon gas in the event of a fire minimizes equipment loss due to fire extinguishing in a room where equipment that dislikes water damage and pollution is installed. Enables quick fire extinguishing while suppressing.

  When such a gas fire extinguishing system is set to automatic mode on the control panel, fire alarms from two fire detectors connected to the two systems installed in the protection area (two system AND alarms) ), It is determined that the activation condition for releasing gas is satisfied, and the countdown for a predetermined time is started. When the countdown is completed, the activation signal is output from the control panel to the activation device. An open gas such as carbon dioxide is supplied to a selection valve provided in a gas supply pipe corresponding to the protection section and opened, and a fire extinguishing gas storage container is opened to discharge the fire extinguishing gas from the jet head.

  In addition, when manual mode is set on the control panel, when a supervisor detects a fire visually or by a fire detector, opens the operation box door installed in the protective zone and presses the start switch. The control panel starts counting down when it is determined that the start condition for releasing gas is satisfied, and the fire extinguishing gas is released in the same manner when the countdown ends.

  FIG. 7 is an explanatory view showing an example of an operation box provided in the gas fire extinguishing equipment. The operation box 100 shown in FIG. 7A is provided with a door 102 that can be opened and closed by a hinge 104 on the lower side of the front surface of the main body. The door 102 is held in a closed state by sealing with a seal 112. The door 102 is formed with a pull opening 106 at the upper end. An activation switch 108 with a protective plate is disposed inside the door 102, and a telephone jack 110 is provided at a position exposed through the handle opening 106.

  The operation box 200 shown in FIG. 7B covers the left half of the storage portion 201 that is recessed in a rectangular shape on the front surface of the main body, and is provided with a door 202 that can be opened and closed by a hinge 204. It is provided to overhang. An activation switch 208 with a protective plate is arranged inside the door 202, and a telephone jack 210 is provided at an exposed position of the storage unit 201 where the door 202 is not provided.

  The operation box 300 shown in FIG. 7C is provided with a door 302 that can be opened and closed by a hinge 304 on the front surface of the main body, and the door 302 has a magnet catch 305 or a pulling groove 306 at the lower left end of the door 302 ( (See Patent Document 3).

JP-A-6-062432 Japanese Patent Laid-Open No. 11-245809 Japanese Patent No. 4915887

  By the way, such conventional gas fire extinguishing equipment requires periodic inspection. When checking the operation box, an attendant connects an emergency telephone plug to the telephone jack of the operation box, and controls the control panel. While in contact with the staff on the side, inspection work is performed such as opening the door and operating the start switch.

  Also, if a fire breaks out in the protected area, the person in charge connects the emergency telephone plug to the telephone jack on the control box, contacts the person in charge on the control panel side, opens the door and turns on the start switch. There are cases where it is operated.

  Here, when the door of the operation box is opened, the door open detection switch operates to send a detection signal from the operation box to the control panel, an emergency broadcast is sent to the protection area, and then when the start switch is operated, the start signal is A predetermined inspection operation is performed at the time of inspection, and an operation for releasing a fire extinguishing gas is performed at the time of a fire.

  However, in the operation box 100 shown in FIG. 7A, when an emergency telephone is connected to the telephone jack 110, it is difficult for the hand to enter the pull opening 106, and the door 102 is opened while communicating with the emergency telephone. There is a problem that it is difficult to open and press the start switch 108. Further, although the door 102 opens downward, it is common knowledge that the door is wide open, and it may take time to open the door 102 in the event of a fire.

  Further, in the operation box 200 shown in FIG. 7B, the door 202 has a vertically long door shape showing the horizontal half of the front surface of the operation box 200, the width of the door 202 is narrow, and it is close to the pulling handle 206. Is attracted and held by the magnet catch 205, and the force when the puller 206 is pulled becomes the force that separates the holding of the magnet catch 205, and there is a problem that the magnet catch 205 cannot be released unless it is pulled with a certain strong force. When the upper or lower position away from the magnet catch 205 is strongly pulled with respect to the pulling handle 206 provided at the end of the vertically long door 202, the door 202 bends and the door 202 is repeatedly opened and closed. If so, the door 202 may be deformed.

  Further, in the operation box 300 shown in FIG. 7C, since the door 302 is provided so as to cover the entire front surface of the operation box 300, as shown in FIGS. Operations such as opening the door 302 while connecting the emergency telephone and contacting the control panel cannot be performed, and the door 302 becomes larger, and the door 302 that opens and closes other than various indicators and start switches It is necessary to provide an operation unit such as a key switch for switching between the manual mode and the automatic mode, an emergency stop switch, etc., and there is a problem that the door structure becomes complicated and the cost is increased.

  An object of the present invention is to provide an operation box for a gas fire extinguishing facility that can be easily opened with an emergency telephone connected and can be easily opened with a light force against a magnet catch.

(Operation box)
The present invention provides an operation box of a gas fire extinguishing equipment that emits a fire extinguishing gas by transmitting a start signal to the control panel by a start operation.
An operation box body provided with an operation display part on the upper half of the front panel and a storage part recessed at a predetermined depth in the lower half, and
A door that is pivotably supported on one side end so as to cover the storage portion and can be opened and closed laterally;
A puller opening formed by cutting out a rectangular position above the other side edge of the door, and
A telephone jack provided at a position in the storage section exposed to the outside near the opening edge of the puller opening;
An activation switch with a protective cover provided at a position in the storage unit covered with the door closed;
A magnet catch that is provided at a position inside the storage portion that is below the puller opening and at the approximate center in the left-right direction of the door, and holds the door in a closed position by magnetic adsorption;
It is provided with.

(Support structure of the part where the door puller opening is formed)
A receiving protrusion is provided for receiving and supporting a door projecting portion toward the upper side end of the puller opening formed in the door in a closed state of the door.

(Open space in the door below the puller opening)
The start switch and the magnet catch are arranged in a position where the door rear side on the lower side of the puller opening is removed with the door closed.

(Exposed position of phone jack)
A telephone jack is provided at an exposed position near the upper inner corner at the puller opening.

(Basic effect)
The present invention provides an operation box of a gas fire extinguishing equipment which transmits a start signal to a control panel by a start operation to release a fire extinguishing gas. An operation box main body formed with a storage portion that is half-depressed to a predetermined depth, and a door that is pivotally supported at one side end so as to cover the storage portion and can be opened and closed laterally. A door opening formed by cutting out a position biased above the other side edge of the door into a rectangular shape, and a telephone jack provided at a position in the storage portion exposed to the outside near the opening edge of the door opening, A start switch with a protective cover provided at a position in the storage section that is covered when the door is closed, and a position in the storage section below the handle opening and at the approximate center in the left-right direction of the door. A magnetic catch that is held in a closed position by suction Therefore, even if an emergency telephone is connected to the telephone jack at the time of inspection or fire, the telephone jack is provided near the opening edge of the rectangular pull-out opening formed on the door. Even if an emergency telephone is connected, the puller opening is sufficiently wide, and it is easy to pull the hand into the puller opening while communicating with the control panel side using the emergency telephone. The door is opened and the start switch can be operated as necessary.

  In addition, a door opening that is rectangularly cut from the left end of the door, for example, is formed, and a magnet catch is placed in the center of the door in the left-right direction between the hinge side on the right side of the door to hold the door in a closed state. If you want to open the door by putting your hand in the puller opening and pulling it forward, the right end of the door will be the fulcrum, the left end of the door will apply the operating force, and the center of the door will be the point of application of the pulling force against the catch magnet. Because the distance between the fulcrum and the point of action is shorter than the distance between the fulcrum and the force point, the pulling-out force boosted by the difference in distance is added, and even if the attracting force by the catch magnet is strong, the door can be easily operated with light operation Can be opened. Moreover, since the adsorption | suction force which maintains a door in a closed state with a magnet catch can be strengthened without strengthening the force which opens a door, a door can be reliably hold | maintained in a closed state.

(Effect of support structure of the part where the door puller opening is formed)
In addition, since the protruding portion for receiving and supporting the door overhanging portion formed on the door toward the upper side edge of the puller opening in the closed state of the door is provided, the puller opening is located above the side edge of the door. By forming it biased, the width of the door overhanging part toward the upper side edge becomes narrow, and it becomes easier to flutter by becoming the cantilever position farthest from the adsorption position by the magnet catch, By receiving and supporting the door, it is possible to prevent the door from fluttering and to reliably hold the door in a closed state.

(Effect of empty space in the door below the puller opening)
In addition, since the start switch and magnet catch are placed in a position where the door lower side of the lower side of the puller opening is removed when the door is closed, the rear side of the lower door surface of the puller opening formed on the door When the door is opened, there is no obstacle even if the hand is inserted from the opening of the pull handle, and the door can be reliably pulled and opened.

Explanatory drawing showing the overall configuration of the gas fire extinguishing equipment Explanatory drawing showing the operation box on the front and side Sectional drawing which showed the AA cross section of the operation box of FIG. A perspective view showing the inside of the operation box with the door open Front view showing the inside with the door of the operation box opened Sectional drawing which showed the AA cross section of the operation box which opened the door of FIG. Explanatory drawing showing a conventional operation box

[Outline of gas fire extinguishing equipment]
FIG. 1 is an explanatory diagram showing an overall configuration diagram of a gas fire extinguishing facility. In addition, the equipment configuration of FIG. 1 is an example, and an appropriate configuration can be taken as necessary.

  As shown in FIG. 1, the gas fire extinguishing equipment is provided with a control panel 10 that collectively controls the gas fire extinguishing equipment, and an operation box 12 is installed outside each room serving as the protection zones A and B. The operation box 12 includes a start switch and a door that protects the start switch. When the manual mode is set, when a person detects a fire, the start signal is sent to the control panel 10 by opening the door and operating the start switch. To release the fire extinguishing gas as a fire extinguishing agent. The discharge indicator lamp 15 displays that the fire extinguishing gas has been released into the monitoring area, and informs that it will not enter the room.

  The ejection head 14 releases a fire extinguishing gas into the room. The speaker 13 broadcasts a caution warning and a evacuation warning indicating that fire extinguishing gas is released, and prompts the person to evacuate immediately if a person is present in the warning area. The fire extinguishing gas storage container 16 stores the fire extinguishing gas.

  In the present embodiment, one fire assumption is made for a plurality of protection sections A and B. For this reason, the fire extinguishing gas storage container 16 is provided as a common facility for the plurality of protection sections A and B. The amount of fire extinguishing gas necessary for fire extinguishing is filled.

  The starter 18 is provided corresponding to the protection sections A and B, receives a start signal for discharge of the fire extinguishing gas from the control panel 10, opens the valve by energizing a built-in solenoid, and releases an open gas such as carbon dioxide. The selection valve 17 is opened by the gas, and the fire extinguishing gas storage container 16 is opened. The selection valve 17 is opened by receiving the open gas generated by the start of the starter 18, and supplies the fire extinguishing gas to the spray head 14 in the protection zone A or B where the fire has occurred to inject it.

  The fire detector 11 monitors the fires in the protection zones A and B with two sensor lines. The pressure switch 21 detects that the fire extinguishing gas is released from the fire extinguishing gas storage container 16, sends a detection signal to the control panel 10, and blinks the discharge indicator lamp 15 corresponding to the monitoring area where the fire occurred. The piston releaser 19 closes the smoke exhaust port with a damper so that the extinguishing gas is not leaked outside when the extinguishing gas is released into the room. The shut-off valve 23 manually closes the supply of the fire extinguishing gas from the fire extinguishing gas storage container 16.

  In such a gas fire extinguishing system, when the automatic mode is set in the control panel 10, there is a fire alarm (two AND alarms) from each fire detector 11 connected to the two systems. In this case, it is determined that the gas release activation condition is satisfied, the activation right is acquired, the countdown for a predetermined time is started, and the speaker 13 broadcasts a caution alarm and a evacuation alarm indicating that the fire extinguishing gas is released.

  The control panel 10 and the operation box 12 are provided with a two-digit 7-segment display. Usually, a predetermined number of seconds is displayed as a countdown initial value. When the countdown is started, the remaining number of seconds is sequentially displayed. Display and zero seconds at the end of countdown.

  When the countdown of the control panel 10 ends, the control panel 10 operates by outputting a gas release signal to the starter 18, and an open gas such as carbon dioxide is supplied from the starter 18 to the selection valve 17 and is opened and fire extinguishing gas is stored. The stopper of the container 16 is opened, and the fire extinguishing gas is discharged from the ejection head 14 through the gas supply pipe into the room of the protective compartment where the fire is detected.

  Further, when the manual mode is set in the control panel 10, the supervisor detects the fire in the protective zone A, for example, by visual observation or the alarm of the fire detector 11, and the operation installed outside the protective zone A By opening the door of the box 12 and pressing the start switch, a start signal is transmitted to the control panel 10, and the control panel 10 starts a countdown and the speaker 13 broadcasts a warning alarm and an evacuation alarm indicating that fire extinguishing gas is released. When the countdown is completed, the fire extinguishing gas is discharged from the ejection head 14 in the protection section in the same manner as in the automatic mode.

[Composition of operation box]
2 is an explanatory view showing the front and side surfaces of the operation box provided in the protective compartment, and is a cross-sectional view showing the AA cross section of the operation box of FIG. 2 in FIG.

  As shown in FIGS. 2 and 3, the operation box 12 is provided with an operation display unit 24 on the upper half of the front panel 22 of the operation box body 20, and the operation display unit 24 indicates the power state of the operation box 12. Power light, fire light indicating the occurrence of a fire, start light indicating that the gas release operation has been started, discharge light indicating that gas is being released, and a stop valve that flashes when the stop valve to prevent the release of fire extinguishing gas is closed Closed indicator lamp, 7-segment indicator that displays countdown time before extinguishing of fire extinguishing gas, key switch for selecting mode of automatic mode or manual mode, emergency stop switch for emergency stop of extinguishing of extinguishing gas, manual A manual mode indicator that lights during mode operation, an automatic mode indicator that lights during automatic mode operation, and the like are provided.

  A box-shaped storage portion 26 having a predetermined depth is formed in substantially the lower half of the front panel 22, and a door 28 is provided to cover the storage portion 26. The door 28 is provided on the right side of the storage portion 26 forming the door opening so as to be opened and closed laterally by a hinge 30, and is formed above the left end of the door 28 so as to form a puller opening 32 cut out into a rectangular shape. The door 28 can be opened in the lateral direction by putting a hand into the puller opening 32.

  Corresponding to the door overhanging portion 28a that faces the upper side edge of the puller opening 32 formed in the door 28, a receiving projection 40 that is received and supported by the door overhanging portion 28a in the closed state of the door 28 is provided.

  A telephone jack 36 is provided at a position exposed to the outside in the storage portion 26 facing the handle opening 32 formed in the door 28. The position of the telephone jack 36 is near the upper inner corner in the handle opening 32. And is arranged so as not to disturb the opening space of the puller opening 32.

  An activation switch 38 provided with a magnet catch 34 and a protective cover 42 (see FIG. 3) is provided at a position in the storage portion covered with the door 28 closed. The magnet catch 34 is provided at a position inside the storage portion 26 below the puller opening 32 and at the approximate center in the left-right direction of the door 28, and holds the door 28 in a closed position by magnetic attraction. Further, the start switch 38 and the magnet catch 34 are arranged at positions where the door 28 on the lower side of the lower side of the puller opening 32 is removed in the closed state of the door 28, and the door tension on the lower side of the puller opening 32. A sufficient empty space is formed on the back surface side of the protruding portion 28b.

[Control box with door open]
4 is a perspective view showing the inside of the operation box opened, FIG. 5 is a front view showing the inside of the operation box opened, and FIG. 6 is an AA view of the operation box with the door opened in FIG. It is sectional drawing which showed the cross section. FIG. 4 excludes the mounting box.

  By pulling a hand from the puller opening 32 formed on the door 28 of the operation box 2812 shown in FIG. 1 to the back side of the door overhanging portion 28b, the suction by the magnet catch 34 is released and FIG. 4 to FIG. As shown in FIG. 6, the door 28 can be opened.

  The door 28 is opened to operate the start switch 38 at the time of inspection, for example. In this case, the clerk plugs and connects the emergency telephone to the telephone jack 36 exposed to the outside through the handle opening 32 as shown in FIG. The operation box 12 is inspected while communicating with the staff.

  In this inspection work, the door 28 is opened while the emergency telephone is connected to the telephone jack 36. At this time, since the telephone jack 36 is disposed in the vicinity of the upper right corner of the puller opening 32 formed in the door 28, the degree of restriction on the opening space of the puller opening 32 is small even if an emergency telephone is connected. The opening space of the hand opening 32 is sufficiently secured, and an attendant can put the hand into the pulling opening 32 and pull it forward without being interrupted by the emergency telephone connection.

  Further, since the start switch 38 and the magnet catch 34 are disposed at a position where the back side of the door protruding portion 28b on the lower side of the puller opening 32 is removed with the door 28 closed, the door protruding portion 28b Sufficient empty space is secured on the back side, and when the door 28 is opened, there is no obstacle even if the hand is inserted through the pull opening 32, and the door 28 can be reliably pulled and opened.

  Further, a door opening 32 that is rectangularly cut out from the left end of the door 28 is formed, and a magnet catch 34 is disposed at a substantially central position in the left-right direction of the door between the right side hinge 30 of the door 28 and the door. When the door 28 is opened by putting the hand into the pulling opening 32 and pulling it forward, the hinge 30 at the right end of the door is the fulcrum, and the hand of the pulling opening 32 at the left end of the door is The applied position is the point where the operating force is applied, and the attracting position of the magnet catch 34 in the center of the door is the acting point where the pulling force is applied. The tripping force boosted due to the difference is applied to the point of action, and even if the attracting force by the magnet catch 34 is strong, the door 28 can be easily opened with a light operating force.

That is, if the distance between the fulcrum and the force point is L1, and the distance between the fulcrum and the action point is L2, the force F1 applied to the fulcrum and the force F2 applied to the action point are
F1 ・ L1 = F2 ・ L2
There is a relationship
F2 = F1 · (L1 / L2)
Since the distance L2 between the fulcrum and the action point is shorter than the distance L1 between the fulcrum and the force point (L1> L2), the force F2 applied to the action point can be boosted according to the distance ratio (L1 / L2).

  Further, since the attracting force for maintaining the door 28 in the closed state can be increased by the magnet catch 34 without increasing the force for opening the door 28, the door 28 can be reliably held in the closed state.

  Further, a receiving projection 40 is provided for receiving and supporting a door overhanging portion 28 a that is formed on the door 28 toward the upper side end of the pulling opening 32 in the closed state of the door 28, and the pulling opening 32 is provided on the door 28. The width of the door overhanging portion 28a is narrowed and the cantilever position farthest from the adsorption position by the magnet catch 34 is easily fluttered. By receiving and supporting the tip of the door overhanging portion 28a by the protrusion 40, the door 28 is prevented from fluttering, and the door can be reliably held in the closed state.

  When the door 28 is opened in this way, the door open detection switch 44 provided integrally with the magnet catch 34 is turned on, and a door open detection signal is transmitted from the operation box 12 to the control panel 10, and an emergency broadcast is sent to the protection section. Is done.

  Subsequently, when the protective cover 42 is removed and the operation button of the start switch 38 is pushed in, the start switch 38 is turned on, a start signal is transmitted from the operation box 12 to the control panel 10, and a predetermined inspection based on the operation of the start switch 38 is performed. Operation is performed.

Also, in the event of a fire, for example, an emergency telephone is connected to the telephone jack 36 to contact the control panel 10 side, the door 28 is opened in the same way as during inspection, and then the protective cover 42 is pushed through. When the operation button of the start switch 38 is pushed in, the start switch 38 is turned on, a start signal is transmitted from the operation box 12 to the control panel 10, and the fire extinguishing gas is discharged to the protection section after a predetermined time countdown. Modified example]
In the above-described embodiment, the door is opened to the right.

  The present invention is not limited to the above-described embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above-described embodiment.

10: Control panel 11: Fire detector 12: Operation box 13: Speaker 14: Injection head 15: Discharge indicator lamp 16: Fire extinguishing gas storage container 17: Selection valve 18: Starter 20: Operation box body 21: Pressure switch 22: Front panel 23: Shut-off valve 24: Operation display unit 26: Storage unit 28: Door 28a: Door extension part 28b: Door extension part 30: Hinge 32: Pull handle opening 34: Magnet catch 36: Telephone jack 38: Activation switch 40: receiving protrusion 42: protective cover 44: door open detection switch

Claims (3)

In the operation box of the gas fire extinguishing equipment that sends a start signal to the control panel to release the fire extinguishing gas when the start switch is operated.
An operation box body provided with an operation display part on the upper half of the front panel and a storage part recessed at a predetermined depth in the lower half, and
A door that is pivotably supported at one side end so as to cover the storage portion and can be opened and closed laterally;
A puller opening formed by cutting out a rectangular position above the other side edge of the door, and
A telephone jack provided at a position in the storage portion exposed to the outside near the opening edge of the puller opening;
An activation switch with a protective cover provided at a position in the storage portion that is covered with the door closed;
A magnet catch that is provided below the puller opening and at a position in the storage portion that is substantially the center in the left-right direction of the door, and holds the door in a closed position by magnetic attraction;
Operation box for gas fire extinguishing equipment, characterized by comprising
2. The operation box of the gas fire extinguishing equipment according to claim 1, wherein a receiving projection that receives and supports a door protruding portion that is formed on the door and faces the upper side end of the puller opening in a closed state of the door. An operation box for gas fire extinguishing equipment, characterized in that it is provided.
  The operation box of the gas fire extinguishing equipment according to claim 1, wherein the start switch and the magnet catch are arranged at a position off the back side of the door surface below the puller opening in the closed state of the door. Operation box for gas fire extinguishing equipment.

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