JP6543162B2 - Operation box for gas fire extinguishing equipment - Google Patents

Description

  The present invention relates to an operation box of a gas fire extinguishing system that extinguishes a fire by releasing a fire extinguishing gas such as carbon dioxide to a plurality of protected sections.

  In the past, gas-based fire extinguishing systems that extinguish fires by releasing extinguishing gas such as carbon dioxide and halon gas at the time of fire occurrence minimize equipment loss by fire extinguishing in the room where equipment that resists water loss and pollution is installed. It is possible to extinguish the fire quickly while suppressing.

  In such a gas fire extinguishing system, when the automatic mode is set to the control panel, fires are reported from each of the fire detectors connected to the 2 systems installed in the protected area (2 systems AND If the start condition for releasing gas is judged to be satisfied, the countdown for a predetermined time is started, and when the countdown ends, the control panel outputs a start signal to the start device to operate, and from the start 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 to open it, and a stopper of the extinguishing gas storage container is opened to release a extinguishing gas from the jet head.

  In addition, when the manual mode is set to the control panel, the guard detects a fire by visual observation or fire alarm detection, and opens the door of the operation box installed in the protected area and presses the start switch The control panel starts to count down, judging that the start condition for releasing the gas is satisfied, and extinguishing gas is released similarly when the countdown is finished.

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

  The operation box 200 shown in FIG. 7 (B) covers the left half of the storage unit 201 recessed in a rectangle on the front surface of the main body and is provided with a door 202 openable and closable by a hinge 204. It is provided to overhang. An activation switch 208 with a protective plate is disposed 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 which can be opened and closed by a hinge 304 on the front surface of the main body, and the door 302 is provided with a pull groove 306 in the magnet catch 305 or the lower end of the door 302 Patent Document 3).

Japanese Patent Application Laid-Open No. 6-062432 Japanese Patent Application Laid-Open No. 11-245809 Patent No. 4915887 gazette

  By the way, such a conventional gas fire extinguishing system requires regular inspections, and when checking the operation box, a staff member connects the plug of the emergency telephone to the telephone jack of the operation box, and the control panel While making contact with the staff on the side, we are performing inspection work such as opening the door and operating the activation switch.

  Also, even if a fire occurs in the protected area, the person in charge connects the emergency telephone plug to the telephone jack on the operation box, opens the door and contacts the person in charge on the control panel while opening the start switch. There is also a case of operation.

  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 performed to the protected area, and then the start signal is activated when the start switch is operated. At the time of inspection, a predetermined inspection operation is carried out, and at the time of a fire, an operation for releasing the extinguishing gas is carried out.

  However, in the operation box 100 shown in FIG. 7A, when an emergency telephone is connected to the telephone jack 110, it becomes difficult for the hand to enter the puller opening 106, and the door 102 is contacted while making an emergency telephone call. There is a problem that the operation of opening and pressing the start switch 108 is difficult. In addition, although the door 102 opens downward, it is generally recognized that the door is sideways open, and it may take time to open the door 102 during an upset fire.

  Further, in the operation box 200 shown in FIG. 7 (B), the door 202 has a vertically long door shape showing the horizontal half of the front of the operation box 200, the width of the door 202 is narrow, and near the puller 206 Is attracted and held by the magnet catch 205, and the force when pulling the pull 206 is the holding force of the magnet catch 205, and there is a problem that the attraction of the magnet catch 205 can not be released unless it is pulled with a strong force to some extent. When the upper or lower position away from the magnet catch 205 is strongly pulled with respect to the pull 206 provided at the end of the vertically elongated door 202, the door 202 is bent and the door 202 is repeatedly opened and closed. There is a possibility that the door 202 may be deformed.

  Furthermore, in the case of the operation box 300 shown in FIG. 7C, since the door 302 is provided to cover the entire front face of the operation box 300, as shown in FIGS. It is not possible to perform the necessary operations such as opening the door 302 while connecting the emergency telephone and communicating with the control panel side, and the door 302 is enlarged and the door 302 that opens and closes is other than various indicator lights and start switches There is also a problem that the door structure becomes complicated and the cost increases because it is necessary to provide an operation unit such as a key switch or an emergency stop switch which switches between the manual mode and the automatic mode.

  An object of the present invention is to provide an operation box of a gas fire extinguishing system which can be opened easily while connecting an emergency telephone and can be easily opened to the magnet catch with a light force.

(Operation box)
According to the present invention, in an operation box of a gas fire extinguishing facility that transmits a start signal to a control panel by a start operation to release a extinguishing gas,
An operation box body provided with an operation display section on approximately half on the upper side of the front panel and a storage section recessed to a predetermined depth on approximately half on the lower side;
A door which covers the storage portion and is provided so as to be able to open and close in the lateral direction by pivotally supporting one side end, and
A pull-up opening formed by cutting out a rectangularly offset position above the other side end of the door;
A telephone jack provided at a position in the housing 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 in the closed state of the door;
A magnet catch provided below the puller opening and at a position in the storage section substantially at the center of the door in the left-right direction and holding the door in the closed position by magnetic attraction;
It is characterized by having.

(Supporting structure of the part where the door puller is formed)
There is provided a receiving projection for receiving and supporting the door extension portion toward the upper side end of the puller opening formed in the door in the closed state of the door.

(Open space in the door below the puller opening)
The start switch and the magnet catch are arranged at a position where the door behind and behind the puller opening is off with the door closed.

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

(Basic effect)
According to the present invention, in an operation box of a gas fire extinguishing facility that transmits a start signal to the control panel by a start operation to release the extinguishing gas, the operation display unit is provided on approximately the upper half of the front panel and the lower side substantially An operation box main body having a storage portion recessed to a predetermined depth in half, and a door which covers the storage portion and is opened and closed in the lateral direction by pivotally supporting one side end rotatably and A pull-out opening formed by notching a position deviated above the other side end of the door in a rectangular shape, and a telephone jack provided at a position in the housing exposed to the outside near the opening edge of the pull-out opening; A start switch with a protective cover provided at a position in the storage unit covered in the closed state of the door, and a position in the storage unit below the puller opening and substantially at the center of the door in the lateral direction And a magnet catch that holds it in the closed position by Therefore, even if the emergency telephone is connected to the telephone jack at the time of inspection or a fire, the telephone jack is located near the opening edge of the rectangular puller opening formed on the door. Even if an emergency telephone is connected to the terminal, the puller opening secures a sufficient area, and it is easy to put a hand in the puller opening and pull while making contact with the control panel side by the emergency telephone. Open the door and enable the activation switch as needed.

  Also, for example, form a pull opening that is cut out in a rectangular shape from the left end of the door, place a magnet catch at the approximate center of the door in the horizontal direction between the hinge on the right side of the door, and hold the door in a closed state. When you try to open the door by putting your hand in the puller opening and pulling it forward, the right end of the door is the fulcrum, the left end of the door is the force point to apply the operating force, and the center of the door is the action point to apply the detachment force to the catch magnet Because the distance between the fulcrum and the force point is short, the distance between the fulcrum and the action point is short, so the separation force boosted by the difference in distance is added, and the door can be easily operated with light operation force even if the attraction force by the catch magnet It is possible to open it to Further, since the attraction force for maintaining the door in the closed state can be strengthened by the magnet catch without increasing the force for opening the door, the door can be reliably held in the closed state.

(Effect by support structure of the part which formed the puller opening of the door)
In addition, since the door projection portion toward the upper side end of the puller opening formed in the door is provided with a receiving projection for receiving and supporting the door in the closed state, the puller opening is on the upper side end of the door The biased formation narrows the width of the door overhang toward the upper side end, and it is easy to flutter because it becomes the cantilever position farthest from the adsorption position by the magnet catch, but the receiving projection By receiving and supporting the door, it is possible to prevent the door from fluttering and ensure that the door can be held closed.

(Effect due to the open space in the door below the puller opening)
In addition, since the activation switch and the magnet catch are disposed at a position where the lower side of the lower door surface of the puller opening is detached in the closed state of the door, the lower side of the lower door surface of the puller opening formed in the door When opening the door, there is nothing that gets in the way even if you put your hand in the opening of the puller, and you can open the door by pulling it to the front.

Explanatory drawing showing the entire configuration of the gas fire extinguishing equipment An illustration showing the operation box in front and side Sectional drawing which showed the AA cross section of the operation box of FIG. 2 The perspective view which showed the inside by opening the door of the operation box Front view showing the inside by opening the door of the operation box Sectional drawing which showed the AA cross section of the operation box which opened the door of FIG. 5 An explanatory view showing a conventional operation box

[Overview of gas fire extinguishing equipment]
FIG. 1 is an explanatory view showing the entire configuration of a gas fire extinguishing system. In addition, the installation structure of FIG. 1 is an example, and can take an appropriate structure as needed.

  As shown in FIG. 1, the gas fire extinguishing equipment is provided with a control panel 10 for collectively controlling the gas fire extinguishing equipment, and an operation box 12 is provided outside each room to be protected compartments A and B. The operation box 12 has a start switch and a door for protecting the start switch, and when the manual mode is set, when a person finds a fire, the start signal is sent to the control panel 10 by opening the door and operating the start switch. To release the extinguishing gas as a extinguishing agent. The release indicator light 15 indicates that the extinguishing gas is released into the monitoring area, and informs that it can not enter the room.

  The injection head 14 discharges the extinguishing gas into the room. The speaker 13 broadcasts a warning warning and evacuation warning indicating that the extinguishing gas is released, and urges evacuation immediately if a person is present in the caution area. The extinguishing gas storage container 16 stores extinguishing gas.

  In this embodiment, a fire assumption is made into one place about a plurality of protection divisions A and B. For this reason, the fire extinguishing gas storage container 16 is provided as a common facility for a plurality of protection divisions A and B. Is filled with the necessary amount of extinguishing gas for extinguishing the fire.

  The activation device 18 is provided corresponding to the protected compartments A and B, receives an activation signal for releasing the extinguishing gas from the control panel 10, opens by opening the solenoid by energizing the built-in solenoid, and releases open gas such as carbon dioxide and opens it. The gas opens the selection valve 17 and opens the stopper of the extinguishing gas storage container 16. The selection valve 17 receives and opens the open gas from the activation of the activation device 18, supplies the extinguishing gas to the injection head 14 of the protective section A or B where the fire has occurred, and injects it.

  The fire detector 11 monitors fires in each of the protective sections A and B with two sensor lines. The pressure switch 21 detects that the extinguishing gas has been released from the extinguishing gas storage container 16, sends a detection signal to the control panel 10, and blinks the release indicator light 15 corresponding to the monitoring area where the fire has occurred. The piston releaser 19 closes the smoke outlet with a damper so that the fire extinguishing gas does not leak outside when the fire extinguishing gas is released to the room. The shutoff valve 23 manually shuts off the supply of the extinguishing gas from the extinguishing gas storage container 16.

  In such a gas fire extinguishing system, when the control panel 10 is set to the automatic mode, there is a fire notification from each of the fire detectors 11 connected to the 2 systems (2 systems of AND notification). In this case, it is determined that the start condition of the gas release has been established, the start right is acquired, and a countdown of a predetermined time is started, and the speaker 13 broadcasts a warning alert and a save alert indicating that the extinguishing gas is released.

  The control board 10 and the operation box 12 are provided with a 7-segment display of 2-digit display, and usually a predetermined number of seconds is displayed as the initial countdown value. When the countdown is started, the remaining number of seconds is sequentially Display and display zero seconds at the end of the countdown.

  When the countdown of the control panel 10 is completed, the control panel 10 operates by outputting a gas release signal to the activation device 18, and the activation device 18 supplies an open gas such as carbon dioxide to the selection valve 17 to open it. The stopper of the container 16 is opened, and the extinguishing gas is released from the injection head 14 into the room of the protected compartment where the fire has been detected through the gas supply pipe.

  In addition, when the manual mode is set in the control panel 10, the surveillance operator visually detects or detects a fire of the fire detector 11, for example, detects a fire in the protection area A, and the operation installed outside the protection area A By opening the door of box 12 and pressing the start switch, a start signal is transmitted to control board 10, and control board 10 starts counting down and speaker 13 broadcasts a warning alert and a withdrawal alert indicating that the extinguishing gas is released. When the countdown is over, extinguishing gas is released from the jet head 14 of the protected area in the same manner as in the automatic mode.

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

  As shown in FIG. 2 and FIG. 3, the operation box 12 is provided with the operation display section 24 substantially on the upper half of the front panel 22 of the operation box main body 20, and the operation display section 24 shows the power state of the operation box 12. Power light, fire light to indicate that a fire has occurred, start light to indicate that gas release operation has been started, discharge light to indicate that gas is being released, close valve that blinks when the shutoff valve is closed to prevent the release of extinguishing gas Closed indicator light, 7-segment indicator for displaying countdown time etc. before extinguishing gas release, Key switch for selecting mode in automatic mode or manual mode, emergency stop switch for emergency stop of extinguishing gas release, manual A manual mode indicator light that lights up during mode operation and an automatic mode indicator light that lights up during automatic mode operation are provided.

  A box-shaped storage portion 26 having a predetermined depth is formed in substantially a 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 in the lateral direction by the hinge 30 and is also biased upward above the left end of the door 28 to form a pullout opening 32 cut out in a rectangle. The door 28 can be opened laterally by putting a hand into the puller opening 32.

  Corresponding to the door overhanging portion 28a directed to the upper side end of the puller opening 32 formed in the door 28, a receiving projection 40 is provided for receiving and supporting the door overhanging portion 28a in the closed state of the door 28.

  A telephone jack 36 is provided at an externally exposed position in the housing 26 facing the pull opening 32 formed in the door 28. The position of the telephone jack 36 is in the vicinity of the upper inner corner of the pull opening 32. And the opening space of the puller opening 32 is not obstructed.

  A start switch 38 provided with a magnet catch 34 and a protective cover 42 (see FIG. 3) is provided at a position in the storage unit covered with the door 28 closed. The magnet catch 34 is provided on the lower side of the puller opening 32 and at a position in the storage portion 26 substantially at the center of the door 28 in the left-right direction, and holds the door 28 in the closed position by magnetic attraction. Further, the start switch 38 and the magnet catch 34 are disposed at a position away from the back side of the lower door surface of the puller opening 32 when the door 28 is closed, and the door is a lower side of the puller opening 32 A sufficient empty space is formed on the back side of the exit portion 28b.

[Operation box with opened door]
4 is a perspective view showing the inside by opening the door of the operation box, FIG. 5 is a front view showing the inside by opening the door of the operation box, and FIG. 6 is an AA of the operation box with the door shown in FIG. It is a sectional view showing a section. In addition, FIG. 4 is removing the attachment box.

  By pulling the hand on the back side of the door overhang portion 28b from the pull opening 32 formed in the door 28 of the operation box 2812 shown in FIG. As shown in 6, the door 28 can be opened.

  Opening of the door 28 is performed, for example, to operate the activation switch 38 at the time of inspection. In this case, with the door 28 closed, the emergency telephone plug is connected by plugging the emergency telephone into the telephone jack 36 exposed to the outside through the puller opening 32 as shown in FIG. Check the operation box 12 while contacting with the staff of the

  In this inspection operation, 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 the attendant can put the hand into the puller opening 32 and pull it forward without being disturbed by the connection of the emergency telephone.

  In addition, since the activation switch 38 and the magnet catch 34 are disposed at a position away from the back side of the door overhang portion 28 b below the puller opening 32 in the closed state of the door 28, the door overhang portion 28 b A sufficient empty space is secured on the back side, and there is nothing obstructive even if a hand is inserted from the pull opening 32 when the door 28 is opened, and the door 28 can be reliably pulled forward to be opened.

  In addition, a puller opening 32 is formed by cutting a rectangle from the left end of the door 28 and the magnet catch 34 is disposed substantially at the center in the lateral direction of the door between the pivoting side by the hinge 30 on the right side of the door 28 Is held by suction in the closed state, and when trying to open the door 28 by putting the hand in the puller opening 32 and pulling it forward, the hinge 30 at the right end of the door acts as a fulcrum and the hand of the puller opening 32 at the left end of the door The position at which it is inserted is the point at which the operation force is applied, and the position at which the magnet catch 34 at the center of the door is attracted is the action point to which the tripping force is applied. A tripping force, which is boosted by the difference, is added to the action point, and the door 28 can be easily opened with a light operating force even if the attraction force by the magnet catch 34 is strong.

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

  Further, since the attraction force for maintaining the door 28 in the closed state can be strengthened by the magnet catch 34 without strengthening 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 the door extension portion 28 a directed to the upper side end of the pull opening 32 formed in the door 28 in the closed state of the door 28. Because the width of the door extension portion 28a is narrowed by being biased to the upper side of the left end of the left side, it becomes easy to flutter by becoming a cantilever position farthest from the adsorption position by the magnet catch 34. By receiving and supporting the tip of the door overhanging portion 28 a by the projection 40, the flap of the door 28 is prevented and the door can be reliably held closed.

  Thus, when the door 28 is opened, the door open detection switch 44 provided integrally with the magnet catch 34 is turned on, and the door open detection signal is transmitted from the operation box 12 to the control panel 10, and the emergency broadcast to the protection section It will be done.

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

Also, even when a fire occurs, for example, while connecting an emergency call to the telephone jack 36 and making contact with the control panel 10 side, open the door 28 in the same manner as at the time of inspection, and then break the protective cover 42 When the operation button of the start switch 38 is depressed, 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 released to the protected area after counting down for a predetermined time. Modified example]
In the above embodiment, the door is opened to the right, but it may be configured in the same manner even when the door is opened to the left.

  Further, the present invention is not limited to the above-described embodiment, includes appropriate modifications that do not impair the objects 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 light 16: fire extinguishing gas storage container 17: selection valve 18: starting device 20: operation box main body 21: pressure switch 22: Front panel 23: closing valve 24: operation display 26: housing 28: door 28a: door overhang portion 28b: door overhang portion 30: hinge 32: pull opening 34: magnet catch 36: telephone jack 38: activation switch 40: Receiving projection 42: Protective cover 44: Door open detection switch

Claims (3)

In the operation box of the gas fire extinguishing facility that sends a start signal to the control panel to release the extinguishing gas when the start switch is operated,
An operation box body provided with an operation display section on approximately half on the upper side of the front panel and a storage section recessed to a predetermined depth on approximately half on the lower side;
A door which covers the storage portion and is provided so as to be openable and closable in the lateral direction by pivotally supporting one side end, and
A pull-up opening formed by cutting out a rectangularly biased position above the other side end of the door;
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 which is covered in a closed state of the door;
A magnet catch which is provided at a position in the storage section below the puller opening and substantially at the center of the door in the lateral direction, and holds the door in a closed position by magnetic attraction;
The operation box of the gas fire extinguishing equipment characterized by having.
In the operation box of the gas fire extinguishing system according to claim 1, a receiving projection for receiving and supporting a door extension portion toward the upper side end of the pull opening formed on the door in a closed state of the door The operation box of the gas fire extinguishing equipment characterized by having provided.
  The operation box of the gas fire extinguishing system according to claim 1, wherein the start switch and the magnet catch are disposed at a position outside the rear side of the lower side of the puller opening with the door closed. An operation box of a gas fire extinguishing facility characterized by

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