JP7411193B1 - fire extinguisher - Google Patents

Abstract

[Problem] To provide an automatic fire extinguishing system that can be installed even when the space in the ceiling is small. [Solution] The fire extinguisher 1 includes a radiation nozzle 10, a chemical tank 20 filled with a fire extinguishing agent S, a pressurizing cylinder 30 filled with a high-pressure gas G, and an opening in the pressurizing cylinder 30 upon sensing heat. A heat sensitive section 40 is provided. The heat sensitive section 40 includes a heat sensitive section main body 41, a first pin 42 which is provided on the heat sensitive section main body 41 so as to be movable in the horizontal direction and is provided with a groove 43 on the outer peripheral surface, and a first pin 42 which is provided on the heat sensitive section main body 41 and is provided with a groove 43 on the outer peripheral surface. A compression spring 44 biases the first pin 42 toward the sealing plate 32 of the pressurizing cylinder 30, and a compression spring 44 is provided on the heat-sensitive section main body 41 so as to be movable in the vertical direction, and the upper end is locked in the groove 43 of the first pin 42. The second pin 45 is provided on the heat-sensitive section main body 41, supports the lower end of the second pin 45, and is meltable by heat. [Selection diagram] Figure 5

Description

The present invention relates to a fire extinguishing device that senses heat and releases extinguishing agent when a fire occurs.

BACKGROUND ART Conventionally, a fire extinguishing device for extinguishing a fire caused by tempura oil is sometimes installed on the ceiling surface of a kitchen in a house (see Patent Document 1).
Patent Document 1 discloses an automatic fire extinguishing device. This automatic fire extinguishing system consists of a tank that stores a fire extinguishing agent and has an injection nozzle exposed on the bottom, a carbon dioxide gas cylinder that has a sealed part that conducts carbon dioxide gas into the tank by opening the sealed part, and a firing pin tip. The hammer includes a hammer with an opening pin provided in the opening facing the sealed part of the carbon dioxide gas cylinder, a spring that urges the hammer toward the sealed part of the carbon dioxide gas cylinder, and solder that temporarily fixes a lever at the lower end of the hammer. The sealing portion of the carbon dioxide gas cylinder is provided on the lower surface of the carbon dioxide gas cylinder. The opening pin, firing pin, hammer, and lever are arranged in vertical alignment.

Japanese Patent Application Publication No. 7-213638

However, in the configuration of Patent Document 1, the opening pin, the firing pin, the hammer, and the lever are arranged in a straight line in the vertical direction, so the height of the automatic fire extinguishing device becomes large. Therefore, there was a problem in that if the space in the attic was small, an automatic fire extinguishing system could not be installed.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic fire extinguishing system that can be easily installed even when the space in the ceiling is small.

The fire extinguishing system according to claim 1 (for example, fire extinguishing system 1 described below) is a fire extinguishing system that senses heat and discharges a fire extinguishing agent, and includes a radiation nozzle (for example, radiation nozzle 10 described below), and the radiation A chemical tank (e.g., chemical tank 20, described below) connected to the nozzle and filled with a fire extinguishing agent (e.g., fire extinguishing agent S, described later); ) filled with a pressurizing cylinder (e.g., pressurizing cylinder 30 described later), and a heat-sensitive part (e.g., heat-sensing part 40, described later) that senses heat and opens into the pressurizing cylinder, When the unit detects heat and opens the pressurizing cylinder, the high-pressure gas in the pressurizing cylinder flows out and fills the chemical tank, and the extinguishing agent in the chemical tank is radiated due to the pressure of the high-pressure gas. The pressurizing cylinder is discharged from a nozzle and is closed with a sealing plate (e.g., the sealing plate 32 described below), and the heat-sensing section has a heat-sensing section main body (e.g., a heat-sensing section main body 41 described below) and the pressurizing cylinder. A first pin (e.g., a first pin (described later)) which is provided on the heat-sensitive portion main body so as to be movable in the horizontal direction toward the sealing plate of the pressurizing cylinder and has a groove (e.g., groove 43 described later) on the outer peripheral surface. pin 42), a biasing member (for example, a compression spring 44, which will be described later) that is provided on the heat-sensing section body and biases the first pin toward the sealing plate of the pressure cylinder; A second pin (for example, a second pin 45 to be described later) that is provided to be movable in the vertical direction and whose upper end is locked in a groove of the first pin; It is characterized by comprising a lid part (for example, a lid part 46 described later) that supports the lower end and can be melted by heat.

According to this invention, the first pin of the heat sensitive section is movable in the horizontal direction, and the second pin for driving the first pin is movable in the vertical direction. Therefore, unlike in the past, the members constituting the heat-sensitive section are not arranged in a straight line in the vertical direction, so the height of the fire extinguishing system can be reduced, and it can be easily installed even when the ceiling space is small.

In the fire extinguishing device according to claim 2, the lid portion includes at least one disk-shaped heat collecting plate (for example, a heat collecting plate described below) made of a material with high thermal conductivity and arranged approximately horizontally. 85) are connected.

According to this invention, since the heat collecting plate is formed into a substantially horizontal disc shape, it is possible to reliably sense hot airflow in all directions within a horizontal plane, without being influenced by the directionality of the hot airflow from a fire.

In the fire extinguishing device according to claim 3, in addition to the groove, a recess (for example, a recess 63 to be described later) is formed in the outer peripheral surface of the first pin from the vicinity of the groove toward the proximal end. It is characterized by the presence of

According to this invention, since the recessed portion extending from the vicinity of the groove toward the proximal end is formed on the outer circumferential surface of the first pin, when the first pin moves toward the pressure cylinder, the second pin moves into the recessed portion. Since the second pin moves along the first pin, it is possible to prevent the second pin from strongly contacting the first pin and resisting the movement of the first pin, so that the first pin can be moved smoothly.

The fire extinguishing device according to claim 4 is characterized in that the chemical tank has a height dimension smaller than a length dimension in a longitudinal cross-sectional view.

According to this invention, since the chemical tank has a shape in which the height dimension is smaller than the length dimension when viewed in longitudinal section, the height dimension of the fire extinguishing system can be reduced, making it easy to use even when the space in the attic space is small. Can be attached to.

According to the present invention, it is possible to provide an automatic fire extinguishing system that can be installed even when the size of the ceiling space is small.

FIG. 1 is a plan view of a fire extinguishing device according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of the fire extinguishing device according to the first embodiment. FIG. 2 is a cross-sectional view taken along line BB of the fire extinguishing system in FIG. 1. FIG. 4 is a cross-sectional view of a portion of the fire extinguishing system in FIG. 3 surrounded by a broken line C. FIG. 2 is a longitudinal cross-sectional view of a heat-sensitive section that constitutes the fire extinguishing device according to the first embodiment. 6 is a view taken along the line DD of the heat-sensitive section in FIG. 5. FIG. 6 is an enlarged view of a portion surrounded by a broken line E of the heat-sensitive portion in FIG. 5. FIG. FIG. 2 is a diagram (part 1, a vertical cross-sectional view of a heat-sensitive section) for explaining the operation of the fire extinguishing device according to the first embodiment. FIG. 2 is a diagram for explaining the operation of the fire extinguishing system according to the first embodiment (part 2, a vertical cross-sectional view of the fire extinguishing system). FIG. 2 is a side view of a fire extinguishing device according to a reference example of the present invention. FIG. 2 is a top view of a fire extinguishing device according to a reference example . FIG. 12 is a cross-sectional view taken along line FF of the fire extinguishing system in FIG. 11. FIG. 7 is a partially enlarged view of a heat-sensitive section according to a modification of the present invention.

Embodiments of the present invention will be described below based on the drawings. In addition, in the following description of the embodiment, the same constituent elements are given the same reference numerals, and the description thereof will be omitted or simplified.
[First embodiment]
FIG. 1 is a plan view of a fire extinguishing device 1 according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of the fire extinguisher 1. FIG. 3 is a BB sectional view of the fire extinguishing device 1 in FIG.
The fire extinguisher 1 senses the heat of a fire and releases a fire extinguishing agent S, and is attached to a ceiling material 2.
This fire extinguishing system 1 includes a radiation nozzle 10, a chemical tank 20 connected to the radiation nozzle 10 and filled with a fire extinguishing agent S, and a pressurized chemical tank 20 connected to the chemical tank 20 and filled with a high-pressure gas G such as carbon dioxide gas. It includes a cylinder 30 and a heat sensitive part 40 that senses heat and opens into the pressurizing cylinder 30.

The drug tank 20 has a shape in which the height dimension T ₁ is smaller than the length dimension L ₁ in a longitudinal cross-sectional view, in this case, an elliptical shape. The chemical tank 20 is formed with a gas inlet 21 through which high-pressure gas flows from the pressurizing cylinder 30, and a chemical outlet 22 through which the extinguishing agent S flows out (see FIGS. 4 and 5). These gas inlet 21 and drug outlet 22 are closed with sealing plates 23 and 24.

FIG. 4 is a sectional view of a portion of the fire extinguishing device 1 in FIG. 3 surrounded by a broken line C.
A ceiling opening 3 is formed in the ceiling material 2, and a ceiling plate 4 is fitted into the ceiling opening 3.
The radiation nozzle 10 is inserted through the sealing plate 4 and attached to the drug outlet 22 of the drug tank 20. A plurality of injection ports 11 are formed in the radiation nozzle 10 . The inner diameter of these injection ports 11 is approximately 0.5 mm to 1.0 mm. Further, the radiation nozzle 10 is exposed to the space under the ceiling, and is covered with a nozzle protection cover 12.

FIG. 5 is a longitudinal cross-sectional view of the heat sensitive section 40. As shown in FIG. FIG. 6 is a view taken along the line DD of the heat-sensitive section 40 in FIG. FIG. 7 is an enlarged view of a portion of the heat sensitive section 40 in FIG. 5 surrounded by a broken line E. As shown in FIG.
A gas outlet 31 through which the high-pressure gas G flows out is formed in the pressurizing cylinder 30 , and this gas outlet 31 is closed with a sealing plate 32 .
The heat sensitive section 40 includes a heat sensitive section main body 41 and a first pin 42 that is provided on the heat sensitive section main body 41 so as to be movable in the horizontal direction toward the sealing plate 32 of the pressurizing cylinder 30 and that has a groove 43 on the outer peripheral surface. , a compression spring 44 as a biasing member provided on the heat-sensing section body 41 and biasing the first pin 42 toward the sealing plate 32 of the pressurizing cylinder 30; a second pin 45 which is provided and whose upper end is locked in the groove 43 of the first pin 42; and a lid part 46 which is provided in the heat sensitive section main body 41 and supports the lower end of the second pin 45 and is meltable by heat. , is provided.

The heat sensitive section main body 41 includes a cylindrical first main body 50 in which a first pin accommodating part 51 is formed which extends in the horizontal direction and accommodates the first pin 42, and a cylindrical first main body 50 that extends downward from the lower surface of the first main body 50. It includes a cylindrical second main body 52 in which a second pin accommodating portion 53 in which the second pin 45 is accommodated is formed.
The first pin accommodating portion 51 includes a stem accommodating portion 54 and a cooking accommodating portion 55 provided at the tip of the stem accommodating portion 54 and having a larger diameter than the stem accommodating portion 54 .

The first pin 42 includes a stem 60 accommodated in the stem accommodating portion 54 of the first pin accommodating portion 51 and a cooking device 61 provided at the tip of the stem 60 and accommodated in the cooking accommodating portion 55 of the first pin accommodating portion 51. and a filing pin 62 provided at the tip of the cooking device 61.
A pressing surface 43A formed at an angle θ with respect to the moving direction of the second pin 45 is formed in the groove 43 formed on the outer peripheral surface of the stem 60.
In addition to the groove 43, a recess 63 is formed on the outer peripheral surface of the stem 60 from the vicinity of the groove 43 toward the proximal end.
The compression spring 44 is provided at a step between the stem accommodating part 54 of the first pin accommodating part 51 and the cooking accommodating part 55, and pushes the cooking 61 of the first pin 42 toward the tip of the first pin accommodating part 51. It is energizing.

A cylindrical cylinder attachment socket 70 is attached to the tip of the first pin accommodating portion 51 of the first body 50, and the pressurizing cylinder 30 is attached to this cylinder attachment socket 70. The cylinder attachment socket 70 has a filing pin insertion part 71 in which a filing pin 62 is accommodated and extends from the first pin accommodating part 51 to the gas outlet 31 of the pressurizing cylinder 30, and a filing pin insertion part 71 that extends from the filing pin insertion part 71 to the gas outlet of the drug tank 20. A gas flow passage 72 leading to the inlet 21 is formed.

The second pin 45 includes a rod-shaped relation pin 47 extending in the vertical direction, and a steel ball 48 disposed between the upper end of the relation pin 47 and the groove 43 of the first pin 42 . The steel ball 48 is locked in the groove 43 of the first pin 42 and is in contact with the pressing surface 43A of the groove 43. That is, the steel ball 48 disposed on the upper end surface of the relation pin 47 contacts the pressing surface 43A of the groove 43 and is locked in the groove 43 of the first pin 42. The movement of the steel ball 48 is suppressed, and the steel ball 48 is pushed downward by the pressing surface 43A of the groove 43 of the first pin 42.

A cylinder 80 having a recess 81 formed in the upper surface is arranged at the lower end of the second pin accommodating portion 53 of the second main body 52, and this cylinder 80 is fixed to the lower end of the second main body 52 with a holder 82. There is. The lid portion 46 is made of a fusible alloy that melts with heat, and is disposed in the recess 81 of the cylinder 80 . Further, the lower end surface of the relation pin 47 is placed on the lid portion 46 via a plunger 83 made of a material with low thermal conductivity.
Two heat collecting plates 85, upper and lower, arranged substantially horizontally are attached to the cylinder 80 by fixing nuts 84. These heat collecting plates 85 are exposed to the space under the ceiling. Each heat collecting plate 85 has a disc shape made of a material with high thermal conductivity, and has a plurality of through holes 86 formed along its outer periphery.

An actuation detection switch 90 is provided on the base end side of the first pin accommodating portion 51 of the first body 50 . The operation detection switch 90 detects movement of the first pin 42 and outputs a detection signal.

The fire extinguishing device 1 described above operates as follows.
In the initial state (state where no heat is detected), as shown in FIG. 7, the first pin 42 is urged by a load W toward the sealing plate 32 of the pressurizing cylinder 30 by the compression spring 44. . This load W is balanced with the force F by which the steel ball 48 presses the pressing surface 43A, and the steel ball 48 is pressed downward by a component force Fy of F. This component force Fy is supported by a holder 82 fixed to the second main body 52 from the steel ball 48 via the relation pin 47, the plunger 83, and the lid part 46.

In this state, when a fire occurs and the temperature of the heat collecting plate 85 rises due to the heat generated by the fire, this heat is transmitted to the lid part 46 through the cylinder 80, and the lid part 46 is heated as shown in FIG. melt. Since the steel ball 48, the relation pin 47, and the plunger 83 are pressed downward by the pressing surface 43A of the groove 43 of the first pin 42, the molten lid 46 is crushed by the plunger 83 and the cylinder 80 and the plunger 83. Along with this, the steel ball 48 moves downward, the engagement between the steel ball 48 and the pressing surface 43A of the groove 43 of the first pin 42 is released, and the biasing force of the compression spring 44 causes the first pin 42 to move downward. The tip of the filing pin 62 moves vigorously toward the pressure cylinder 30, breaks through the sealing plate 32, and opens into the pressure cylinder 30. Note that at this time, the steel ball 48 moves from the groove 43 to the recess 63 and further moves along the recess 63.

Then, as shown by the arrow in FIG. The drug breaks and flows into the drug tank 20, filling it up. Due to the pressure of this high-pressure gas G, the extinguishing agent S breaks the sealing plate 24 of the agent outlet 22 and is released. Then, as shown in FIG. 9, the nozzle protection cover 12 comes off due to the pressure of the extinguishing agent S, and the extinguishing agent S is radially released from the injection port 11 of the radiation nozzle 10.

According to this embodiment, there are the following effects.
(1) The first pin 42 of the heat sensitive section 40 is made horizontally movable, and the relation pin 47 for driving the first pin 42 is made vertically movable. Therefore, since the members constituting the heat-sensitive part are not arranged vertically in a straight line as in the conventional case, the height of the fire extinguishing system 1 can be reduced, and it can be installed even when the space in the attic is small.

(2) Since the heat collecting plate 85 has a substantially horizontal disk shape, it is possible to reliably sense the hot air flow in all directions within the horizontal plane, regardless of the directionality of the hot air flow from the fire.
(3) Since the recess 63 extending from the vicinity of the groove 43 toward the proximal end side is formed on the outer circumferential surface of the stem 60 of the first pin 42, when the first pin 42 moves toward the pressurizing cylinder 30, the steel Since the ball 48 moves along the recess 63, it is possible to prevent the steel ball 48 from strongly contacting the stem 60 of the first pin 42 and resisting the movement of the first pin 42, so that the first pin 42 can be moved smoothly. Can be moved.
(4) Since the chemical tank 20 has an elliptical shape in which the height dimension is smaller than the length dimension when viewed in longitudinal section, the height dimension of the fire extinguishing device 1 can be made small, making it easy to use even when the ceiling dimension is small. Can be attached to.

[Second embodiment]
FIG. 10 is a side view of a fire extinguishing device 1A according to a reference example of the present invention. FIG. 11 is a top view of the fire extinguisher 1A. FIG. 12 is a cross-sectional view taken along line FF of the fire extinguishing system shown in FIG. 11.
In this reference example , the drug tank 20A has a substantially rectangular shape in which the height dimension T2 is smaller than the length dimension L2 and both horizontal ends are semicircular in the first embodiment. different from.
According to this reference example , effects similar to those in (1) to (4) above can be obtained.

Note that the present invention is not limited to the above-described embodiments, and any modifications, improvements, etc. that can achieve the purpose of the present invention are included in the present invention.
For example, in the above embodiment, the second pin 45 is composed of the relation pin 47 and the steel ball 48, but the present invention is not limited to this, and the relation pin and the steel ball may be integrated as shown in FIG. .

G... High pressure gas S... Fire extinguishing agent 1, 1A... Fire extinguishing device 2... Ceiling material 3... Ceiling opening 4... Sealing plate 10... Radiation nozzle 11... Injection port 12... Nozzle protection cover 20, 20A... Chemical tank 21... Gas inlet 22... Drug outlet 23, 24... Sealing plate 30... Pressurizing cylinder 31... Gas outlet 32... Sealing plate 40... Heat sensitive part 41... Heat sensitive part main body 42... First pin 43... Groove 43A... Pressing surface 44... Compression spring (biasing member)
45...Second pin 46...Lid part 47...Relation pin 48...Steel ball 50...First body 51...First pin accommodating part 52...Second body 53...Second pin accommodating part 54...Stem accommodating part 55...Cooking accommodation Part 60... Stem 61... Cooking 62... Filing pin 63... Recess 70... Cylinder attachment socket 71... Filing pin insertion part 72... Gas flow path 80... Cylinder 81... Recess 82... Holder 83... Plunger 84... Fixing nut 85... Heat collection Plate 86...Through hole 90...Operation detection switch

Claims (4)

A fire extinguishing device that detects heat and releases a fire extinguishing agent,
a radiation nozzle; a chemical tank connected to the radiation nozzle and filled with a fire extinguishing agent; a pressurizing cylinder connected to the chemical tank and filled with high-pressure gas; and an opening in the pressurizing cylinder by sensing heat. a heat-sensitive part,
When the heat-sensitive section senses heat and opens the pressurizing cylinder, the high-pressure gas in the pressurizing cylinder flows out and fills the chemical tank, and the pressure of the high-pressure gas causes the extinguishing agent in the chemical tank to be extinguished. is emitted from the radiation nozzle,
The pressurized cylinder is closed with a sealing plate,
The heat sensitive section includes a heat sensitive section main body, a first pin that is provided on the heat sensitive section main body so as to be movable in a horizontal direction toward the sealing plate of the pressurizing cylinder and has a groove on its outer peripheral surface, and the heat sensitive section. a biasing member provided on the main body to urge the first pin toward the sealing plate of the pressurizing cylinder; and a biasing member provided movably in the vertical direction on the heat sensitive section main body, the upper end of which is a groove of the first pin. a second pin latched to a second pin, and a lid part provided on the heat-sensitive section main body to support a lower end of the second pin and meltable by heat ,
The drug tank is flat in plan view, and has a concave upper surface,
The heat sensitive part and the pressurizing cylinder are housed in a recessed part of the drug tank,
A fire extinguishing device characterized in that the upper end surfaces of the heat sensitive part and the pressurizing cylinder are flush with the upper end surface of the chemical tank or are lower than the upper end surface of the chemical tank . The fire extinguishing device according to claim 1, wherein at least one disc-shaped heat collecting plate made of a material with high thermal conductivity and arranged substantially horizontally is connected to the lid part. . 3. The fire extinguishing device according to claim 1, wherein a recess is formed in the outer circumferential surface of the first pin from near the groove toward the proximal end. The fire extinguishing device according to claim 1 or 2, wherein the chemical tank has a height dimension smaller than a length dimension.

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