KR20210041385A - Extinguisher percussion device of auto fire extinguisher system - Google Patents

Abstract

Disclosed is a starting apparatus for the fire extinguisher of an automatic fire extinguishing arrangement, which is operated to open the outlet of a storage container in which a fire extinguishing agent of a liquid or powder type is filled at a high pressure by the heat produced in case of fire. To this end, the starting apparatus for the fire extinguisher of an automatic fire extinguishing arrangement according to the present invention comprises: a socket coupled to the outlet of the storage container; a percussion housing which is connected to the socket, has an accommodating space therein, and is provided with an adapter fastening unit formed at one end; a percussion member which is installed at the accommodating space, wherein a spring support member is formed at an arbitrary height in a circumferential direction, and an electric cut-out unit composed of elastic pieces elastically operated in a radial direction is provided at one end; a percussion spring installed in the percussion housing to provide elasticity to elastically operate the percussion member in the direction of the outlet of the storage container; a percussion pin coaxially coupled to one end of the percussion member; a bulb adapter coupled to the adapter fastening unit of the percussion housing; a trigger installed in the connecting unit of the bulb adapter such that the pressurizing unit of a front end may be located in the adapter fastening unit; a bulb supporting member provided in the bulb adapter on the opposite side to the trigger; and a glass bulb interposed between the trigger and the bulb supporting member. Here, a latching projection is formed on the inner circumferential surface of the end portion of the adapter fastening unit, and a latching protrusion is formed corresponding to the latching projection on the outer surface portion of one end of the elastic cut-out unit.

Description

Extinguisher percussion device of auto fire extinguisher system}

The present invention relates to a fire extinguisher starting device, and more particularly, to a fire extinguisher starting device of an automatic fire extinguishing facility operated to open an outlet of a storage container filled with a liquid or powdered extinguishing agent by heat generated in a fire.

In general, it is desirable and required to provide a fire extinguisher or the like in preparation for a fire in a building. However, in the case of a general fire extinguisher, not only the user has to purchase a fire extinguisher separately, but the fire extinguisher is sprayed only when a person manipulates the fire extinguisher, so in the event of a fire, the user must take a risk. There is a drawback.

On the other hand, recent fire extinguishing objects are not limited to simple buildings or devices and records therein, but are increasingly diversified. This is due to the diversification, integration, etc. of accessory facilities due to the increase in size and high rise of buildings, and it is difficult to quickly suppress fires that have occurred intensively in a specific area with only conventional fire extinguishing facilities in the trend that accessory facilities are diversified and integrated.

Accordingly, when a fire occurs in a specified area, an automatic fire extinguishing system has been proposed that enables rapid initial extinguishing by spraying a fire extinguishing agent locally into the area. The automatic fire extinguishing facility uses an operating device operated by flame or heat generated in the event of a fire to open the fire extinguisher so that the fire extinguishing agent can be sprayed, and is very effective in extinguishing the initial fire.

Automatic fire extinguishing equipment can be largely divided into mechanical and electric types according to the operation method. Mechanical type has no risk of malfunction, short circuit, short circuit, etc. compared to electric type, but cannot display various information including preliminary alarm compared to electric type. Therefore, when the use environment is relatively good, an electric fire extinguishing system is mainly used, and when the use environment is poor, a mechanical fire extinguishing system is mainly used.

Here, the poor environment refers to an environment in which humidity is high, temperature is high, oil vapor, dust, etc. are present. In this environment, the electric fire extinguishing device is inoperable despite the occurrence of a fire due to damage to electrical parts and wiring. Things can happen. Therefore, when the use environment is poor, a mechanical fire extinguishing system is mainly used.

A representative example of a mechanical fire extinguishing device is a thermal glass tube (hereinafter referred to as'glass bulb'). Here, the glass bulb has a mechanism in which the internal liquid expands when heat above a certain temperature is applied, and the external glass tube ruptures as the pressure increases.It is among the core parts commonly adopted in the field of firefighting equipment such as sprinklers and fire extinguisher starters. Is one.

As for the conventional mechanical fire extinguishing device of the glass bulb type, various methods have been known, including Korean Patent No. 10-1264847 and Korean Patent Publication No. 2012-0135025. However, the known conventional glass bulb method has a large number of components and a complicated configuration, and thus it is difficult to secure price competitiveness because the manufacturing cost is high, and there are disadvantages in terms of mass production.

Korean Utility Model Registration No. 20-0459249 (Registration date 2012. 03. 07)

The technical problem to be solved by the present invention is to provide a fire extinguisher starting device of an automatic fire extinguishing facility capable of exerting an operating force to quickly and accurately open a fire extinguishing container without incompetence while having a simple configuration.

According to an aspect of the present invention as a means of solving the problem,

A socket coupled to the outlet of the storage container, having a through hole formed in a first direction, and having a discharge hole branching from the through hole in a second direction orthogonal to the first direction;

A percussion housing connected to the socket, having an accommodating space therein, and having an adapter fastening portion formed at one end;

A percussion member installed in the receiving space, having a spring support formed at an arbitrary height in a circumferential direction, and having an elastic cutout at one end composed of elastic pieces that are elastically energized in a radial direction;

A percussion spring interposed between an inner stepped portion of one side of the percussion housing and the spring support;

A percussion pin coaxially coupled to one end of the percussion member;

A bulb adapter coupled to the adapter fastening portion of the percussion housing;

A trigger that has a pressing portion formed at the tip and is installed inside the connecting portion of the bulb adapter so that the pressing portion is located inside the adapter fastening portion;

A bulb support provided inside the bulb adapter opposite the trigger; And

Includes; a glass bulb interposed between the trigger and the bulb support,

An engaging step is formed on an inner circumferential surface of an end of the adapter fastening part, and a locking protrusion is formed on an outer surface of one end of the elastic cutout corresponding to the engaging step.

Here, the trigger is fixed in a state pressed in the direction of the adapter fastening part by a glass bulb, and the locking protrusion is restrained in a state in which the locking protrusion is engaged with the locking stepped by the trigger pressed in the direction of the adapter fastening part, so that the percussion member It may be a configuration that is fixed in position.

Preferably, the diameter of the pressing portion of the trigger located in the adapter fastening portion may be gradually decreased toward the bottom.

In addition, the lower end of the pressing portion may have a diameter smaller than the diameter of the elastic cutout portion, and the upper end may be formed to have a diameter larger than the diameter of the elastic cutout portion and smaller than the diameter of the adapter fastening portion of the portion where the engaging step is formed.

In addition, the bulb support may be provided integrally with the bulb adapter or may be coupled by a screw fastening method.

Here, when the bulb support is coupled to the bulb adapter by a screw fastening method, the force of the glass bulb pressing the trigger by the bulb support may be adjusted to adjust the binding force between the locking step and the locking protrusion and operation sensitivity.

In addition, when the force pressing the trigger is removed due to the rupture of the glass bulb, the locking protrusion is urged in the direction to be separated from the locking step by the elasticity of the percussion spring, and the trigger is pushed upward at an instant, thereby releasing the constraint of the locking protrusion. The percussion member can be operated.

In addition, the locking protrusion may be configured in the form of an arc-shaped protrusion formed on the outermost surface of the elastic incision in the radial direction of the curved portion.

In addition, the glass bulb has a round ground plane formed at one end and a pointed ground plane at the opposite end, and a concave coupling surface is formed at one end of the bulb support in response to the round ground plane, and corresponds to the sharp ground plane. A fixing groove having a shape to be formed may be formed in the trigger.

According to an exemplary embodiment of the present invention, although it is a glass bulb type, the configuration is very simple compared to the conventional one. Accordingly, there is an advantage in that the manufacturing cost can be lowered so that price competitiveness in the market can be secured, and since the configuration is simple, manufacturing is easy, and thus there is an advantage in terms of mass production.

In addition, it is a structure that can exert the operating power to open the fire extinguishing container quickly and accurately without structurally inoperative, although it is a simple structure, so it is possible to reliably remove the risk factor that the fire extinguisher does not operate normally due to the failure to properly open the storage container. Device reliability can be improved.

In addition, since the structure allows the bulb support to adjust the force that presses the glass bulb to properly adjust the force that the glass bulb presses the trigger, the trigger can finely adjust the force that restrains the percussion member, and the overall operation of the device. The advantage is that the sensitivity is also adjustable.

1 is a cross-sectional view of a fire extinguisher starting device of an automatic fire extinguishing facility according to an embodiment of the present invention.
Figure 2 is an enlarged view of the main part of the present invention showing an enlarged portion'A' of Figure 1;
3 is a perspective view of the main part of the fire extinguisher starting device shown in FIG.
Figure 4 is an operational state diagram of the present invention, a view showing a state after the operation of the fire extinguisher starting device when the glass bulb rupture due to fire.
5 is a view showing an operating state of the'A' part shown in FIG. 1 when the glass bulb is ruptured.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The terms used in the specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features or It is to be understood that the presence or addition of numbers, steps, actions, components, parts, or combinations thereof does not preclude the possibility of preliminary exclusion.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

In addition, terms such as "... unit", "... unit", and "... module" described in the specification mean a unit that processes at least one function or operation, which can be implemented by hardware or software or a combination of hardware and software. I can.

In the description with reference to the accompanying drawings, the same drawing reference numerals are assigned to the same components, and redundant descriptions thereof will be omitted. In the following description, when it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a cross-sectional view of a fire extinguisher starting device of an automatic fire extinguishing facility according to an embodiment of the present invention. More specifically, it is a cross-sectional view showing the state of the device before the fire extinguisher starting device is operated (a triggered standby state).

Referring to FIG. 1, the fire extinguisher starting device 1 includes a socket 10 coupled to the outlet 20 of the storage container 2. One side of the socket 10 is coupled to the outlet 20, and a through hole 100 is formed along the center to connect the upper center and the lower center in the height direction (hereinafter referred to as'first direction') in the drawing. . In addition, a discharge hole 110 branching from the through hole 100 is provided in a second direction orthogonal to the first direction.

A percussion housing 12 is coupled to an upper end of the socket 10 based on the first direction, and a percussion member 14 is installed in the percussion housing 12. The percussion housing 12 is a hollow body in which the upper and lower portions are opened, and an accommodation space 120 is formed therein, and an adapter fastening portion 122 is formed at one end opposite to which the socket 10 is coupled. And the percussion member 14 is installed in the receiving space 120, a spring support 140 is formed in the circumferential direction at an arbitrary height.

At one end (top in the first direction) of the percussion member 14, an elastic cutout 144 is formed made of elastic pieces that are elastic in the radial direction. A locking protrusion 146 is formed on an outer edge of the front end of the elastic cutout 144, and a locking stepped 126 is formed on an inner circumferential surface of the end of the adapter fastening portion 122.

At this time, before the fire extinguisher starting device 1 is operated, the locking protrusion 146 is engaged with the locking step 126 and is constrained by the trigger 16 to be described later, so that the percussion member 14 may be fixed to the percussion standby position.

A percussion spring 15 is interposed between the inner stepped portion of one side of the percussion housing 12 and the spring support 140. The percussion spring 15 may be a compression coil spring, and is compressed by a binding force between the locking protrusion 146 and the engaging step 126 by the trigger 16 between the spring support 140 and the percussion housing 12 When the locking protrusion 146 is released from the locking stepped step 126 after being fixed in a fixed state, elasticity for triggering the percussion member 14 toward the outlet 20 is provided.

A percussion pin 13 is coaxially coupled to one end of the percussion member 14. The percussion pin 13 may be of a configuration having a pointed tip 130 on the side facing the outlet 20 of the storage container 2, and the tip 130 is the elasticity of the percussion spring 15 As the percussion member 14 penetrates the sealing disk 22 that was blocking the outlet 20 at a high speed as soon as the percussion member 14 is triggered in the direction of the outlet 20, it serves to open the outlet 20.

The bulb adapter 17 is coupled to the adapter fastening portion 122 of the percussion housing 12. In addition, a trigger 16 is installed on one side of the bulb adapter 17 and a bulb support 19 is provided inside the bulb adapter 17 opposite the trigger 16.

Trigger 16 is provided with a pressing portion 160 of a configuration that gradually decreases in diameter as it goes downwards at the tip of the bulb adapter 17 so that the pressing portion 160 is located inside the adapter fastening portion 122. The trigger 16 may be installed inside the connection part.

The bulb support 19 may be provided integrally with the bulb adapter 17 or may be coupled by a screw fastening method as illustrated in the drawings.

When the bulb support 19 is coupled to the bulb adapter by a screw fastening method, as well as the pressing force of the glass bulb 18 to be described later interposed between the trigger 16 and the trigger 16 by tightening or loosening the bulb support 19 Since the bulb 18 can properly adjust the force for pressing the trigger 16, it is possible to finely adjust the binding force of the glass bulb 18 and the overall operation sensitivity of the device.

The aforementioned glass bulb 18 is installed between the bulb support 19 and the trigger 16 facing each other at a predetermined distance. The glass bulb 18 is a structure filled with a liquid reactant having a property of expanding upon receiving heat in an enclosed space inside the glass tube. When heat above a certain temperature is applied, the inner reactant expands and the pressure increases. It may be a configuration in which the glass tube is ruptured.

The glass bulb 18 may have a configuration in which a round ground plane is formed at one end and a pointed ground plane is formed at the opposite end, as in the example of FIG. 1, and corresponds to the round ground plane of the glass bulb 18. At one end of the earth 19, a concave coupling surface 190 is formed, and a fixing groove 162 having a shape corresponding to the opposite pointed ground surface is formed in the trigger 16, so that the glass bulb 18 is a bulb support 19 ) Can be stably fixed between the trigger (16).

Based on the first direction, the glass bulb 18 is disposed under the bulb support 19 that is screwed and fixed to the bulb adapter 17, and the trigger 16 is disposed under the glass bulb 18, thereby triggering (16) is fixed in a state that is relatively pressed in the direction of the adapter fastening part 122 by the glass bulb 18, and the locking protrusion 146 is engaged with the locking step 126 by the trigger 16 It is constrained to the percussion member 14 may be fixed in the percussion standby state.

This will be described in more detail with reference to FIGS. 2 and 3.

FIG. 2 is an enlarged view showing a main part of a fire extinguisher activating device according to an embodiment of the present invention, which is an enlarged view of part'A' of FIG. 1, and FIG. 3 is a perspective view of the main part of the fire extinguisher starting device shown in FIG. .

2 and 3, a glass bulb 18 is positioned between the bulb support 19 and the trigger 16, and the bulb support 19 is coupled to the bulb adapter 17 by screwing. . Accordingly, the fastening force of the bulb support 19 that presses the glass bulb 18 is transmitted to the trigger 16 through the glass bulb 18 as well as the glass bulb 18, whereby the trigger 16 is It is in a state in which the force F1 is received downward (in the direction of the adapter fastening part 122).

Here, the lower end of the pressing portion 160 formed on the trigger 16 is formed to have a diameter smaller than the diameter of the elastic cutting portion 144, so that a part of the pressing portion 160 is elastic cutting portion 144 as shown in the figure. ) Is located inside, the upper diameter of the pressing portion 160 is larger than the diameter of the elastic cutout 144 and smaller than the diameter of the adapter fastening portion 122 of the portion where the engaging step 126 is formed.

According to this configuration, the above-described force (F1) acting on the trigger 16 is a force that opens the upper end of the elastic cutout 144 in which the locking protrusion 146 is formed through the pressing unit 160 in the radial direction. It acts, and as a result, the locking protrusion 146 at the upper end of the elastic cutout 144 is caught between the pressing unit 160 and the locking step 126 in a state that is engaged with the locking step 126 and is constrained, thereby triggering a percussion as shown in FIG. In the state where the spring 15 is compressed, the percussion member 14 may be fixed to the percussion standby position.

2 and 3, in a state in which the elastic cutout 144 is opened in the radial direction and the locking protrusion 146 is in close contact with the locking step 126 by the trigger 16 , When the force (F1) pressing the trigger 16 due to the rupture of the glass bulb 18 is removed, the locking protrusion 146 due to the elasticity of the percussion spring 15 is in the direction to be separated from the locking step 126 It is activated and the trigger 16 is slightly pushed upward at the moment.

Accordingly, the restraint of the locking protrusion 146 is completely released, and the percussion member 14 moves toward the outlet 20 of the storage container 2 at an instantaneous high speed due to the elasticity of the compressed percussion spring 15. Triggered. Accordingly, the percussion pin 13 with a sharp tip coaxially coupled to one end of the percussion member 14 penetrates while striking the sealing disk 22 that was blocking the outlet 20 at an instantaneous speed and penetrates the outlet 20. It will open up.

Here, the elastic cutout 144 is a configuration in which two or more elastic pieces that can be elastic in the radial direction are disposed adjacent to one end (top in the first direction) of the percussion member 14 with the cutout groove interposed therebetween, and in FIG. 3, the elastic cutout For example, a configuration in which two cut grooves are formed at 180° intervals in the circumferential direction of the portion 144 is shown, but only two or more cut grooves are required regardless of the interval.

The locking protrusion 146 may preferably be in the form of an arc-shaped protrusion in which a curved portion is formed in the radial direction of the elastic cutout 144 on the outermost surface. When the locking protrusion 146 is configured in an arc-shaped protrusion shape, when the aforementioned force F1 is removed due to the rupture of the glass bulb 18, the locking protrusion 146 is locked by the elasticity of the percussion spring 15. While being in contact with the corners of the 126), the elastic cutout 144 may be pushed inward while being naturally pushed down.

Therefore, despite the fact that the glass bulb 18 is ruptured according to the heat and pressure caused by the fire and the force F1 has been removed, the locking protrusion 146 is maintained in a state that is hung on the locking step 126 to trigger the percussion member 14 Inability to operate, such as a trigger failure, which does not move downward, can be fundamentally prevented, thereby increasing the reliability of the device.

Reference numeral 3 is fastened to the pressure branch hole 120 formed on the other side of the opposite side of the discharge hole 110, and when one fire extinguishing facility is operated, a fire extinguisher of another fire extinguishing facility can be operated in a chain. It refers to an adapter for connecting the pressure branch pipe (4) that connects the starting device and the pressure fluid to exchange.

With reference to the drawings, the operation of the fire extinguisher starting device of the automatic fire extinguishing facility according to an embodiment of the present invention will be described in more detail.

Figure 4 is an operating state diagram of the present invention, a view showing a state after the operation of the fire extinguisher starting device when the glass bulb is ruptured due to a fire, and Figure 5 is an operating state of the'A' part shown in Fig. 1 above when the glass bulb is ruptured It is a diagram showing.

Referring to FIGS. 4 to 5, the glass bulb 18 has a mechanism in which the inner liquid expands and the pressure increases, and the outer glass tube ruptures when heat above a certain temperature is applied. Therefore, when heat from the fire is directly or indirectly transmitted to the glass bulb 18, the glass tube is ruptured, and the force of the trigger 16 ('F1' described above) that was constraining the percussion member 14 to the percussion standby position is removed. do.

When the force F1 pressing the trigger 16 is removed due to the rupture of the glass bulb 18 due to the fire, the locking protrusion ( 146 is projected in the direction to be separated from the locking step 126, and the trigger 16 is slightly pushed upward by this movement of the locking protrusion 146, and the locking protrusion 146 as shown in FIG. 5(b). The restraint against it is completely released.

Accordingly, the percussion member 14 is triggered toward the outlet 20 of the storage container 2 due to the elasticity of the percussion spring 15 that has been compressed, and the percussion pin 13 is instantaneously triggered in the storage container (2). It penetrates while striking the sealing disk 22 that was blocking the outlet 20 of the unit and opens the outlet 20, thereby opening the storage container 2 with a pressure fluid, such as a working gas, liquid, or powder. The type of fire extinguishing agent is ejected to the outside through the through hole 100 and the discharge hole 110.

According to the exemplary embodiment of the present invention, the configuration is very simple compared to the prior art while being a glass bulb type. Accordingly, there is an advantage in that the manufacturing cost can be lowered so that price competitiveness in the market can be secured, and since the configuration is simple, manufacturing is easy, and thus there is an advantage in terms of mass production.

In addition, it is a structure that can exert the operating power to open the fire extinguishing container quickly and accurately without structurally inoperative, although it is a simple structure, so it is possible to reliably remove the risk factor that the fire extinguisher does not operate normally due to the failure to properly open the storage container. Device reliability can be improved.

In addition, since the structure allows the bulb support to adjust the force that presses the glass bulb to properly adjust the force that the glass bulb presses the trigger, the trigger can finely adjust the force that restrains the percussion member, and the overall operation of the device. The advantage is that the sensitivity is also adjustable.

In the above detailed description of the present invention, only specific embodiments according thereto have been described. However, it should be understood that the present invention is not limited to the specific form mentioned in the detailed description, and rather, it is understood to include all modifications, equivalents, and substitutes within the spirit and scope of the present invention as defined by the appended claims. It should be.

1: fire extinguisher starting device 2: storage container
3: pressure gauge 10: socket
12: percussion housing 13: percussion pin
14: percussion member 15: percussion spring
16: trigger 17: bulb adapter
18: glass bulb 19: bulb support
100: through hole 110: discharge hole
120: accommodation space 122: adapter fastening part
126: locking step 140: spring support
144: elastic incision 146: locking projection
162: fixing groove 190: concave coupling surface

Claims (9)

A socket coupled to the outlet of the storage container, having a through hole formed in a first direction, and having a discharge hole branching from the through hole in a second direction orthogonal to the first direction;
A percussion housing connected to the socket, having an accommodating space therein, and having an adapter fastening portion formed at one end;
A percussion member installed in the receiving space, having a spring support formed at an arbitrary height in a circumferential direction, and having an elastic cutout at one end composed of elastic pieces that are elastically energized in a radial direction;
A percussion spring interposed between an inner stepped portion of one side of the percussion housing and the spring support;
A percussion pin coaxially coupled to one end of the percussion member;
A bulb adapter coupled to the adapter fastening portion of the percussion housing;
A trigger that has a pressing portion formed at the tip and is installed inside the connecting portion of the bulb adapter so that the pressing portion is located inside the adapter fastening portion;
A bulb support provided inside the bulb adapter opposite the trigger; And
Includes; a glass bulb interposed between the trigger and the bulb support,
A fire extinguisher actuating device of an automatic fire extinguishing facility in which a locking step is formed on an inner circumferential surface of an end of the adapter fastening part, and a locking protrusion is formed on an outer surface of one end of the elastic cutout corresponding to the locking step.
The method of claim 1,
The trigger is fixed in a state pressed in the direction of the adapter fastening part by a glass bulb,
A fire extinguisher starting device of an automatic fire extinguishing facility in which the locking protrusion is engaged with the locking step by a trigger pressed in the direction of the adapter fastening part so that the percussion member is fixed at the percussion standby position.
The method according to claim 1 or 2,
The fire extinguisher starting device of an automatic fire extinguishing facility gradually decreases as the diameter of the pressing part of the trigger located in the adapter fastening part decreases downward.
The method of claim 3,
The lower end of the pressing portion is formed with a diameter smaller than the diameter of the elastic cutout, and the upper end is formed with a diameter smaller than the diameter of the adapter fastening portion of the portion where the engaging step is formed, and the upper end is formed with a diameter smaller than the diameter of the elastic cutout portion.
The method according to claim 1 or 2,
The bulb support,
A fire extinguisher starting device of an automatic fire extinguishing facility provided integrally with the bulb adapter or coupled by a screw fastening method.
The method of claim 5,
Fire extinguisher of an automatic fire extinguishing facility capable of adjusting the binding force and operating sensitivity between the locking step and the locking protrusion by adjusting the force that the glass bulb presses the trigger with the bulb support when the bulb support is screwed into the bulb adapter Maneuvering device.
The method according to claim 1 or 2,
When the force pressing the trigger is removed due to the rupture of the glass bulb, the locking protrusion is activated by the elasticity of the percussion spring in the direction to be separated from the engaging step, and the trigger is pushed upward momentarily, and the locking protrusion is released. Fire extinguisher starting device of automatic fire extinguishing facility in which the fire extinguisher is operated.
The method according to claim 1 or 2,
The locking protrusion is an arc-shaped protrusion formed with a curved portion in the radial direction of the elastic cutout on the outermost surface of the fire extinguisher starting device of an automatic fire extinguishing facility.
The method according to claim 1 or 2,
The glass bulb has a round ground plane formed at one end and a pointed ground plane at the opposite end,
In correspondence with the round ground plane, a concave coupling surface is formed at one end of the bulb support,
A fire extinguisher starting device of an automatic fire extinguishing facility in which a fixing groove having a shape corresponding to the pointed ground plane is formed in the trigger.

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