JP2005118109A - Fire extinguisher to be mounted inside range hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire extinguisher to be easily mounted inside a range hood, capable of taking various measures based on electric signals when a fire breaks out by sensing the reduction of a fire extinguishing agent and the gas pressure inside a body of the fire extinguisher and converting the sensed reduction to the electric signals. <P>SOLUTION: The fire extinguisher consists of the fire extinguisher body to be horizontally mounted inside the range hood, one or a plurality of fire extinguishing agent releasing nozzles directly mounted on a pipe body of the fire extinguisher body to communicate with the inside of the fire extinguisher body, a heat collecting plate attached to an opening of the fire extinguishing agent releasing nozzle by a bonding means such as soldering, and an electric signal generator mounted at an end of the fire extinguisher body in the longitudinal direction. The electric signal generator consists of an electric signal generating switch and a pressure sensitive part for actuating the electric signal generating switch. At least the pressure sensitive part is made to project air-tightly into the interior of the fire extinguisher body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is designed to be easily and compactly installed in the range hood above the heating means so that the fire extinguishing work can be immediately and automatically performed in response to a fire around the range using heating means such as kitchen gas or electricity. Improvements to fire extinguishers, especially in order to alert the surroundings during fire extinguishing, or to generate an electrical signal to shut off the energy supply source of heating means such as gas and electricity, etc. The purpose is to measure.

  Examples of fire extinguishing measures around a kitchen range include a kitchen oil fire extinguishing device disclosed in JP-A-8-107942, or a range hood disclosed in JP-A-10-127803. It has been known. The former includes a water storage cylinder in the casing 2 and a water fine spray nozzle that can discharge pressurized water from the water storage cylinder as a fog, and further protrudes to the outside of the casing 2 through the branch pipe 7. The fire extinguisher main body 1 provided with the water fine spray nozzle 4 is attached to the wall surface 14 located directly under the hood fan 13.

  In the latter case, the fire extinguishing device 9 is placed on the back surface of the front panel 6 in the upper space 2 within the range hood body, which is partitioned by the upper surface plate 1a, by the mounting base 7, the fixing bracket 13, the receiving portion 15, the fastening band, and the like. At the same time, the fixed pipe 11 extended from the fire extinguishing device 9 is used to project the fire detection head and the injection nozzle 12 at the tip toward the lower side of the top plate 1a.

JP-A-8-107942 Japanese Patent Laid-Open No. 10-127803

  However, in the fire extinguisher of the above-mentioned cited document 1, it is necessary to attach the fire extinguisher main body safely by using a fixing screw or the like that is located directly under the hood and is attached to the wall surface of the structure. It is necessary to arrange the nozzle on the range from the main body through the branch pipe, which not only involves extensive work, but also attaches the casing that stores the fire extinguisher main body separately to the outside of the range hood. There is a disadvantage that the space occupied volume increases and the kitchen storage becomes narrow. .

  Further, even in the fire extinguisher of the cited document 2, the fire extinguisher main body is mounted in the upper space partitioned by the upper surface plate in the range hood and on the back side of the front panel, and the injection nozzle protrudes below the upper surface plate. In addition, it is necessary to align and install the injection direction toward the range, and special work such as the drilling of the branch pipe is required, and it is also necessary to perform piping in the local work.

  Also, in the case of long-term installation, due to earthquakes, etc., the connected parts are likely to loosen and crack gradually over time, and improvements in durability and maintenance are desired. Therefore, there are problems with long-term reliability.

  Therefore, the present invention solves the above-mentioned problems in the prior art, and can be easily and compactly installed in the range hood above the heating means, and can also be used to reduce the pressure of the fire extinguishing agent when the fire is extinguished due to fire detection. An electrical signal is generated by feeling a drop, and an alarm sound is generated based on this electrical signal to prompt attention to the surroundings, or the energy supply source of heating means such as gas and electricity can be shut off It is.

  Specifically, the invention of claim 1 is a cylindrical pressurized or pressure-accumulating fire extinguisher body that can be installed horizontally in a range hood and can be filled with a fire extinguishing agent in an airtight manner, and the fire extinguishing system. One or more fire extinguishing agent discharge nozzles that are directly attached to the tube body portion of the fire extinguisher body and communicated with the inside of the fire extinguisher main body, and the opening portion of the fire extinguishing agent discharge nozzle to close the opening portion, In addition, the electric signal generator comprises a heat collecting plate attached via a bonding means such as solder that melts at a constant flame heat temperature, and an electric signal generator attached to the longitudinal end of the fire extinguisher body. Is composed of an electric signal generating switch and a pressure sensing part for activating the electric signal generating switch, and at least the pressure sensing part is airtightly projected into the fire extinguisher body, for mounting in a range hood It related to firearms.

  According to a second aspect of the present invention, the pressure sensing unit that activates the electrical signal generation switch of the electrical signal generator is always energized toward the opposite end of the extinguisher body by the energizing means, When the gas pressure for pressurizing or accumulating the fire extinguishing chemical filled in is high, the electric signal generating switch is turned OFF and the opposite end direction of the fire extinguisher body when the gas pressure decreases 2. A fire extinguisher for mounting in a range hood according to claim 1, wherein the fire hood has an operating pin for turning on an electric signal generation switch that protrudes toward the center.

  Furthermore, in the invention of claim 3, the electric signal generator switch of the electric signal generator is connected to a separately provided signal transmitter for mounting in a range hood according to claim 1 or claim 2. Regarding fire extinguishers. Further, the invention according to claim 4 is the range hood according to claim 1, wherein a cylindrical collar having a different length can be attached to and used at at least one end of the fire extinguisher main body depending on the width and inner diameter of the range hood. It relates to a fire extinguisher for internal installation.

  Further, the invention according to claim 5 is the invention according to claim 1, wherein an adjuster device that is adjustable in the length direction of the fire extinguisher main body is attached to at least one of both ends in the length direction of the fire extinguisher main body. It is related with the fire extinguisher for installation in a range hood. Further, the invention according to claim 6 is any one of claims 1 to 5, wherein the fire extinguishing agent discharge nozzle is loosely fitted with a fire extinguishing agent sealing pin in the fire extinguishing agent jet passage and between the heat collecting plate. It relates to a fire extinguisher for mounting in a range hood as described in.

  Furthermore, the invention of claim 7 relates to a fire extinguisher for mounting in a range hood according to claim 1, wherein a gas filling port valve is attached to either the left or right end in the length direction of the fire extinguisher body. Furthermore, in the invention of claim 8, the electric signal generator, the extinguishing agent filling port, and the gas filling port valve attached to the fire extinguisher main body are located on the central axis in the length direction of the fire extinguisher main body tube body. It is related with the fire extinguisher for attachment in the range hood of any one of Claims 1-7 made.

  In the configuration described above, the cylindrical collars at least at one end of the cylindrical fire extinguisher main body depending on the inner diameter in the width direction of the range hood are replaced with an appropriate one and attached to the range hood. Or, install the fire extinguisher body horizontally in the range hood with the extinguishing agent discharge nozzle facing downward while adjusting the length of the adjuster at least one end of the fire extinguisher body in accordance with the width of the range hood. .

  When a fire occurs in the vicinity of the range, the flame or flame heat reaches the heat collecting plate, melts the bonding means such as solder, and drops the heat collecting plate to open the opening of the fire extinguishing agent discharge nozzle. As a result, the fire extinguishing agent that is constantly pressed from the inside of the fire extinguisher main body is jetted onto the range to automatically perform the fire extinguishing activity. In this case, when the extinguishing agent sealing pin is loosely fitted in the extinguishing agent ejection passage and between the heat collecting plate in the extinguishing agent discharge nozzle, the extinguishing agent discharge nozzle is loosely fitted when the extinguishing agent is released. The fire extinguishing agent sealing pin is also released to the outside as the fire extinguishing agent is jetted.

  Further, when the fire extinguishing agent in the fire extinguisher main body is released, the pressure sensing unit of the electrical signal generator senses a decrease in gas pressure and turns on the electrical signal generation switch. By turning on this electrical signal generation switch, the electrically connected alarm is sounded or the red flashing lamp is lit to notify the abnormality, or the energy supply source of heating means such as gas and electricity is shut off by solenoid Functional improvement during fire extinguishing activities will be attempted by electrically shutting off by means such as interposing a vessel.

  As described above, the present invention provides a cylindrical pressurized or accumulator-type fire extinguisher body that can be horizontally installed in a range hood and that can be filled with a fire extinguishing agent in an airtight manner, and a tube body of the fire extinguisher body. One or a plurality of fire extinguishing agent discharge nozzles directly attached to the part and communicated with the inside of the fire extinguisher body, and the opening of the fire extinguishing agent discharge nozzle to close the opening, and a constant flame heat temperature It consists of a heat collecting plate attached through an adhesive means such as solder that melts at the same time, and an electric signal generator, a fire extinguishing agent filling port, and a gas filling port valve attached to the fire extinguisher body Since the main tube body is mounted on the central axis in the longitudinal direction, the entire fire extinguisher can be compactly mounted in the range hood, and the space occupied volume is significantly reduced.

  In addition, since no special construction is required for installation, it is low-cost, and since there is no need for a conduit that communicates between the main body of the fire extinguisher and the fire extinguishing agent discharger, durability maintenance and maintenance are not necessary. In terms of sex, it is extremely reliable.

  Furthermore, the lengthwise end of the fire extinguisher main body is composed of an electric signal generating switch and a pressure sensing unit that activates the electric signal generating switch, and at least the pressure sensing unit projects airtightly into the fire extinguisher main body. When the fire extinguisher in the fire extinguisher body is released, the electrical signal generator pressure sensor detects the gas pressure drop and turns off the electrical signal generation switch. Based on the electrical signal obtained by turning on this electrical signal generation switch, the alarm can sound, the red flashing lamp can be lit, or the energy supply source of the heating means such as gas or electricity can be switched on. It is possible to improve functions during fire fighting activities such as shutting off.

  Further, since the fire-extinguishing agent discharge nozzle is formed by loosely fitting a fire-extinguishing agent sealing pin in the fire extinguishing agent injection passage and between the heat collecting plate, the heat collecting efficiency of the heat collecting plate is increased, and In particular, the fire extinguishing agent is not directly touched by the fire extinguishing agent sealing pin during normal times, and the durability can be remarkably improved without corrosion.

  In the following, the specific contents of the present invention will be described based on the embodiment of FIGS. 1 and 2. 1 is a fire extinguisher body, 7 is directly attached to the tube body of the fire extinguisher body, and The fire extinguishing agent discharge nozzle 20 communicated with the inside represents an electric signal generator.

  In order to enable the fire extinguisher main body 1 to be mounted horizontally in the range hood, the distance between the left and right inner walls F and F in the range hood is approximately equal to or slightly shorter than the distance ( A lid 3 having a mounting hole 4 for mounting an electric signal generator 20 at the center is welded to an end opening on one side, which is a metal cylindrical body having a tube body portion 2 (for example, about 550 to 580 mm). It is attached integrally by 3a.

  A thick cylindrical head H is integrally formed by welding Ha at the opposite end opening, and a thread 5a is formed on the inner peripheral edge of the opening of the head H. The palate 5 is screwed to 5a so that the extinguishing agent 17 and a gas such as nitrogen for pressurizing and discharging the extinguishing agent 17 are accumulated in the tube body 2, or a small gas cylinder is hermetically filled. It is configured to be possible.

  The fire extinguishing agent discharge nozzle 7 has a fire extinguishing agent at a central portion of the tube body 2 constituting the fire extinguisher main body 1 at an appropriate position in the length direction (horizontal direction) attached by welding 7a at one or a plurality of locations. A fire extinguishing agent discharge nozzle having an injection passage 8 is shown. Further, a screw thread portion 10 is formed on the outer peripheral surface of the distal end portion of the fire extinguishing agent discharge nozzle 7, and a heat collecting plate is attached to the rib portion 10 via an O ring 12. The metal fitting 9 is attached by screwing and integrating airtightly with a thread portion formed on the inner peripheral surface thereof.

  Furthermore, the above-described heat collecting plate mounting bracket 9 has a heat collecting plate holding portion 11 that is gradually expanded to the outer peripheral portion, and via the solder 13 that melts in the heat collecting plate holding portion 11 at a relatively low temperature. The back surface of the heat collecting plate 14 having the heat collecting flange 14a at the periphery is bonded and held.

  Reference numeral 15 denotes a fire-extinguishing agent sealing pin, and the fire extinguishing agent 17 in the tube body portion 2 is not directly touched to the heat-collecting plate 14, and is caused by corrosion of the solder 13 which is an adhesive means with the heat-collecting plate holding portion 11. The purpose is to eliminate malfunctions and to eliminate the delay of fire detection due to absorption of the temperature of the heat collecting plate 14 in the event of a fire by directly touching the extinguishing agent 17. In this fire extinguishing agent injection passage 8 and between the heat collecting plate 14, an O-ring 16 is interposed around and is loosely fitted.

  Furthermore, the electric signal generator 20 is airtightly attached to the central opening 4 of the lid 3 via an O-ring 3a. Specifically, it is composed of an electric signal generation switch 21 held in a switch holder 21a and a pressure sensing part 22 for activating the electric signal generation switch 21, and at least the pressure sensing part 22 is a tube body of the fire extinguisher main body 1. It protrudes airtightly inside the portion 2.

  Further, the pressure sensing unit 22 is always biased toward the opposite side of the tube body 2 by a coiled spring 23, and the fire extinguishing agent 17 in the tube body 2 and its gas pressure are sufficiently satisfied. In this case, the pressure overcomes the urging force of the coiled spring 23 and is pressed leftward in FIG. 2 to turn off the electric signal generation switch 21 and fire extinguishing activity is started, so When the fire-extinguishing agent 17 is discharged from the fire-extinguishing agent discharge nozzle 7 and the inside of the tube body 2 becomes negative pressure, the operation pin 22a of the pressure sensing unit 22 is opposite to the tube body 2 by the action of the coiled spring 23 ( The electric signal generation switch 21 is turned on by projecting toward the head H side).

  Further, when the electrical signal generation switch 21 is turned on, the fuel gas circuit breaker or the fire alarm that supplies this to, for example, the range via the lead wire 26, and the fire extinguishing in the tube body 2 are also shown. It can be used as an operation or lighting signal for a medicine filling sign lamp or the like, or as an electrical signal for automatically contacting a mobile phone as fire occurrence information.

  In the figure, reference numeral 18 denotes a gas filling valve attached to the valve attachment hole 6 at the center of the palate 5, and after removing the palate 5 and filling the tube body 2 with a necessary amount of the extinguishing agent 17, A gas for pressurization and pressure such as nitrogen is filled and accumulated from the gas filling valve 18. In this case, a small gas cylinder is inserted into the tube body portion 2 and the sealing plate portion provided at the opening portion is made to face the center portion of the heat collecting plate 14 so that it is broken by fire flame heat. Then, the gas may be ejected, whereby the fire extinguishing agent 17 in the tube body 2 may be emitted from the extinguishing agent discharge nozzle 7.

  In the figure, 19 is a pressure gauge for displaying the gas pressure in the tube body 2, and 24 and 25 are cylindrical collars. The cylindrical collars 24 and 25 have different widths at the left and right ends of the fire extinguisher body 1 so that the width inner diameters of the range hoods to be attached are not uniform. The collar 24.25 can be selectively mounted and used.

  In addition, in this case, when the width hood inner diameter of the range hood is not uniform, at least one of the lengthwise ends of the fire extinguisher main body is an adjuster device (not shown) that can be expanded and contracted in the lengthwise direction of the fire extinguisher main body. May be attached. Furthermore, in the present invention, in order to install the fire extinguisher compactly and well in the range hood, the electric signal generator 20 attached to the fire extinguisher main body 1, the extinguishing agent filling port by the palate 5, and the gas filling port valve 18 are: The fire extinguisher main body tube body 2 is preferably mounted on the central axis X in the length direction.

  In the above-described configuration, when this is attached to the left and right wall surfaces F and F in the range hood, it is shown in FIG. 1 by a substantially L-shaped mounting bracket P and P that is attached to the wall surfaces F and F in advance. Easy to install. Moreover, when the adjuster apparatus (illustration omitted) is attached to both ends, it can attach by making it hold | press and hold with respect to the left-and-right both wall surface F * F in a range hood.

  Although the present invention was developed mainly as a fire extinguisher in a range hood for a general house, it can also be applied as a fire extinguisher in a range hood of a kitchen in a ship or an aircraft.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which represented the part of the place showing the general attachment state of the fire extinguisher for attachment in the range hood which is one Example of this invention. The enlarged longitudinal cross-sectional view which abbreviate | omitted a part of pipe | tube trunk | drum part of the fire extinguisher for attachment in the range hood shown in FIG. The partial expanded longitudinal cross-sectional view of the fire-extinguishing agent discharge | release nozzle in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fire extinguisher main body 2 Tube body part 3 Lid 3a Welding 4 Attachment hole 5 Palate 5a Screw part 6 Valve attachment hole 7 Fire extinguishing agent discharge | emission nozzle 8 Fire extinguishing agent injection path 9 Heat collecting plate attachment bracket 10 Robe part 11 Heat collecting plate holding Part 12 O-ring 13 Solder 14 Heat collecting plate 15 Extinguishing chemical sealing pin 16 O-ring 17 Extinguishing chemical 18 Gas filling valve 19 Pressure gauge 20 Electric signal generator 21 Electric signal generation switch 21a Switch holder 22 Pressure sensing part 22a Operation Pin 23 Coiled spring 24 Cylindrical collar 25 Cylindrical collar 26 Lead wire H Head Ha Welding P Mounting bracket

Claims (8)

  It can be installed horizontally in the range hood, and it is directly attached to the tubular pressurized or accumulator-type fire extinguisher body that can be filled with a fire extinguishing agent in an airtight manner, and the tube body of the fire extinguisher body, Moreover, one or a plurality of extinguishing agent discharge nozzles communicated with the inside of the fire extinguisher main body, and adhesion of solder or the like that melts at a constant flame heat temperature so as to close the opening portion in the opening portion of the extinguishing agent discharge nozzle A heat collecting plate attached via a means, and an electric signal generator attached to the longitudinal end of the fire extinguisher body. The electric signal generator includes an electric signal generating switch and the electric signal generating switch. A fire extinguisher for mounting in a range hood, wherein the fire extinguisher is installed in a range hood, and at least the pressure sensing part is airtightly projected into the fire extinguisher body.   The pressure sensing unit that activates the electrical signal generation switch of the electrical signal generator is always energized by the energizing means in the direction of projecting into the fire extinguisher main body, and is used to press out the extinguishing chemical filled in the fire extinguisher main body. When the gas pressure for pressurization or pressure accumulation is high, it contracts to turn off the electrical signal generation switch, and when the gas pressure decreases, it operates in the fire extinguisher body to turn on the electrical signal generation switch The fire extinguisher for mounting in a range hood according to claim 1, which has a pin.   The fire extinguisher for mounting in a range hood according to claim 1 or 2, wherein the electrical signal generation switch of the electrical signal generator is connected to a separately provided signal transmitter.   The fire extinguisher for mounting in a range hood according to claim 1, wherein a cylindrical collar having a different length is attached to at least one end of the fire extinguisher main body according to the inner diameter of the range hood.   The fire extinguisher for attachment in a range hood according to claim 1, wherein an adjuster device that is adjustable in expansion and contraction in the length direction of the fire extinguisher body is attached to at least one of both ends in the length direction of the fire extinguisher body.   The inside of the range hood according to any one of claims 1 to 5, wherein the fire-extinguishing agent discharge nozzle has a fire-extinguishing agent sealing pin loosely fitted in the fire-extinguishing agent jet passage and between the heat collecting plate. Fire extinguisher for installation.   The fire extinguisher for mounting in a range hood according to claim 1, wherein a gas filling port valve is attached to either the left or right end of the fire extinguisher body in the length direction.   The electric signal generator, the extinguishing agent filling port, and the gas filling port valve attached to the fire extinguisher main body are located on the central axis in the length direction of the fire extinguisher main body tube body, and are attached. Fire extinguisher for installation in the range hood of any one.

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