JP2022170098A - Fittings - Google Patents

Abstract

A fitting that can contribute to extinguishing a fire is provided. A fitting used for opening and closing an opening between one space and the other space or for partitioning the space, the fitting comprising a plate-shaped surface member facing one space and a A plate-like surface member facing the other space is provided at a predetermined distance from the surface member facing the other space, and the surface member facing the one space and the surface facing the other space A fire extinguishing member that is provided between a member and releases a fire extinguishing agent when a predetermined temperature is reached, and a surface member that faces one space and a surface facing the other space. It is configured to have a discharge portion that discharges to the outside from between the members. [Selection drawing] Fig. 2

Description

TECHNICAL FIELD The present invention relates to fittings, and more particularly to fittings such as doors for opening and closing openings, shutters, and partitions for partitioning spaces.

Conventionally, doors, shutters, and the like are known as fittings for partitioning spaces. For example, doors and shutters are provided at doorways that allow people to enter and exit buildings, and at partitions between rooms and passages that are partitioned within buildings.
As such doors and shutters, those having fire resistance such as the fire door disclosed in Patent Document 1 for the purpose of suppressing the spread of fire in the event of a fire and the fire shutter disclosed in Patent Document 2 are known. ing.

Japanese Utility Model Laid-Open No. 7-38571 JP 2017-115511 A

However, although the fire doors and fire shutters described above can suppress the spread of fire, they do not actively act against fires and are not useful for extinguishing fires. Conventionally, when such fire doors and fire shutters are installed, the current situation is that measures against fire in the space partitioned by the fire doors and fire shutters depend on the installation of fire extinguishing equipment such as sprinklers and mist. is.

An object of the present invention is to provide fittings that can contribute to extinguishing a fire in order to solve the above problems.

A fitting according to the present invention is a fitting used for opening and closing an opening between one space and another space or for partitioning the space, wherein the fitting has a plate-like surface facing one space. and a plate-like surface member provided at a predetermined distance from the surface member facing the one space and facing the other space, wherein the surface member facing the one space and the surface member facing the other space are provided. A fire extinguishing member provided between a surface member facing the other space and releasing a fire extinguishing agent when a predetermined temperature is reached; The configuration is characterized by including a discharge portion that discharges to the outside from between the member and the surface member facing the other space.
According to this configuration, even if the opening between one space and the other space is opened or closed, or if there is a fire in the space partitioned by fittings used for partitioning the space, the heat generated by the fire is kept at a predetermined temperature. By reaching , the fire extinguishing agent from the extinguishing member is discharged from the discharge portion to (outside) the space partitioned by the fittings, thereby contributing to the extinguishing of the fire in this space.
In addition, the fire extinguishing member is configured by solidifying a fire extinguishing agent that changes from a solid state to an aerosol state when reaching a predetermined temperature, and the surface member facing the one space and the surface facing the other space The fire extinguishing agent changed into an aerosol between the member and the extinguishing agent is discharged to the outside from the discharge part.
According to this configuration, even if the opening between one space and the other space is opened or closed, or if there is a fire in the space partitioned by fittings used for partitioning the space, the heat generated by the fire , a plate-shaped surface member facing one space or a plate-shaped surface member facing the other space is heated, and this heat is applied to the plate-shaped surface member facing one space and the surface facing the other space. When the temperature of the fire extinguishing member reaches a predetermined temperature, it changes from a solid state to an aerosol state, and the fire extinguishing agent that has changed to an aerosol state is released. By discharging from the part to (outside) the space partitioned by the fittings, it is possible to contribute to the extinguishing of the fire in this space.
Further, the fire extinguishing member is provided on the side of the surface member facing one space, is provided between the fire extinguishing member and the surface member facing the other space, and dissipates the heat of the surface member facing the other space. The fire extinguishing agent discharged from the discharging part is discharged to one space, further comprising a heat insulating member for blocking.
According to this configuration, when a fire breaks out in the other space, the heat insulating member provided between the extinguishing member and the surface member facing the other space blocks the heat of the surface member facing the other space. Thereby, the heat is not transferred to the extinguishing agent, so that it can be operated so that the extinguishing agent is released into the one space only when a fire breaks out in the one space.
Further, the fire extinguishing member is provided on the surface member side facing the one space and the surface member side facing the other space, and the fire extinguishing member provided on the surface member side facing the one space; a heat insulating member provided between the fire extinguishing member provided on the side of the surface member facing the other space and blocking the heat of the surface member facing the one space and the heat of the surface member facing the other space; In addition, the fire extinguishing agent discharged from the discharging part is selectively discharged into one space or the other space.
According to this configuration, by providing the fire extinguishing agent on the surface member side facing one space and the surface member side facing the other space with the heat insulating member interposed, fire extinguishing occurs in one space or the other space A fire extinguishing agent can be selectively released into the space on the side of the fire.

It is the external appearance perspective view and top view of a hinged door apparatus. It is sectional drawing of a door. It is a figure which shows the effect|action of a fire-extinguishing member. FIG. 10 illustrates another form of release of fire extinguishing agent; It is a figure which shows the form of other arrangement|positioning of the fire-extinguishing member in a door. It is a figure which shows the top view of a slat-type shutter apparatus, and sectional drawing of a slat.

FIG. 1 is an external perspective view and a plan view of a hinged door device according to this embodiment.
The hinged door device 1 is a fitting used for partitioning a space as a doorway to different spaces, and is provided between two spaces partitioned by a wall or the like in a building, for example, between rooms. It is possible to cut off and open the state of communication between rooms while allowing the entry and exit of the number of people.

A room here means a section of space separated by fittings such as walls, partitions, fusuma, floors, and ceilings inside a building such as a residence, and is limited to spaces such as living rooms used for living and working. It does not include spaces such as garages, stables, storage rooms, entrances, corridors, baths, and toilets.
In the following description, the hinged door device 1 is provided between a living room and a corridor.

As shown in FIG. 1, the hinged door device 1 is generally composed of a door frame 10 and a door 20. The door frame 10 is attached to an opening provided in a wall in the building, and the door frame 10 is opened via a hinge 30. A door 20 is attached to the . Here, it is assumed that the door 20 is attached to the right side (right frame) of the door frame 10 via a hinge 30, and the door 20 is attached so as to be rotatable about the hinge 30 toward the living room.

The front side and the rear side of the opening are either the living room side or the corridor side. The direction indicated by the arrows defines the direction as forward/backward, left/right, and up/down.

The door frame 10 includes a lower frame 12 attached to the lower side of the opening, a left frame 14 and a right frame 16 attached to the left and right sides of the opening and extending upward from the left and right ends of the lower frame 12, It is attached above the opening and consists of a left frame 14 and an upper frame 18 extending to connect the upper ends of the right frame 16 .

Enclosing surfaces 12a, 14a, and 16a are provided on the upper, lower, left, and right frames 12; , 18a, and door contact surfaces 12b, 14b, 16b, 18b facing the design surface of the door. Enclosing surfaces 12a, 14a, 16a, 18a and door stop surfaces 12b, 14b, 16b, 18b formed in each frame 12; 14; 16; 18 are formed as surfaces perpendicular to each other.
In addition, the structure of the above-mentioned door frame 10 is an example, and is not limited to a four-sided frame, and may be a three-sided frame or the like.

When the door 20 is closed, the door 20 includes surface members 22 and 24 that face the room side and the corridor side, and a lower end surface member 26 that forms a lower end surface, a left end surface, a right end surface, and an upper end surface facing the door frame 10, It is formed in a hollow rectangular shape having a left end surface member 27, a right end surface member 28, and an upper end surface member 29 (hereinafter these may be collectively simply referred to as end surface members). The surface member 22; 24 and the end surface member 26; A face member 27, a right end face member 28, and a top end face member 29 are provided.

In this embodiment, the surface members 22; 24 are described as a single plane without openings such as louvers and windows.
The upper end surface member 29 is provided with a plurality of release portions 32 that communicate with the hollow space formed between the surface members 22 and 24 . In addition, the position where the discharge portion 32 is provided is not limited to the upper end surface member 29, and may be provided in the lower end surface member 26, the left end surface member 27, and the right end surface member . Also, the shape and quantity of the discharge portion 32 may be appropriately set.
Further, the door 20 is provided with a doorknob 34 and a locking device (not shown).

The door 20 and the door frame 10 are made of, for example, a metal plate such as a steel plate or an aluminum plate.

FIG. 2 is an AA (longitudinal direction) sectional view of the door 20 in FIG. 1(a).
A fire extinguishing member 36 and a heat insulating member 38 are provided inside the door 20 . In this embodiment, it is assumed that the fire extinguishing member 36 is arranged on the living room side and the heat insulating member 38 is arranged on the corridor side. The fire extinguishing member 36 is provided so as to be in contact with the rear surface 22a of the living room side surface member 22 so that the heat in the living room is transmitted through the living room side surface member 22. As shown in FIG.

The fire-extinguishing member 36 is formed into a predetermined solid shape by hardening a fire-extinguishing agent that can eject a fire-extinguishing component into a space when a predetermined temperature (hereinafter referred to as an operating temperature) is reached. The term "solid state" as used herein includes a highly rigid solid state, a flexible solid state, and the like. In the present embodiment, the fire extinguishing member 36 is, for example, formed in a rectangular plate shape having a size capable of covering the entire back surface 22a of the surface member 22 (see FIG. 2). Also, the thickness of the fire extinguishing member 36 may be set based on the fire extinguishing ability required to extinguish the fire in the space to be extinguished, for example, the size of the living room.

As the fire-extinguishing agent constituting the fire-extinguishing member 36, for example, an aerosolized potassium compound can be used. Then, the aerosolized potassium compound may be solidified (solid state) into a predetermined shape such as a plate shape or a sheet shape as described above. When the extinguishing member 36 is composed of a potassium compound, the solidified potassium compound is aerosolized when the temperature of the surrounding (atmosphere) in the vicinity of the extinguishing member 36 reaches 300 ° C. or higher due to the radiant heat at the time of fire. Along with this aerosolization, the fire extinguishing agent expands explosively (rapidly).

The fire extinguishing member 36 may be fixed to the rear surface 22a of the surface member 22 by fixing means such as an adhesive. In addition to not falling off the surface member over time, the adhesive should have heat resistance so that the fire extinguishing member 36 does not fall off the surface member 22 due to the heat of the fire before the fire extinguishing member 36 reaches its operating temperature. Good to use.

In addition, the fire extinguishing member 36 is not limited to being directly attached to the surface member 22 via an adhesive. may intervene.

The heat insulating member 38 is intended to block heat transfer from the surface member 22 on the living room side to the surface member 24 on the corridor side, or from the surface member 24 on the corridor side to the surface member 22 on the living room side. It is positioned between the facing surface member 24 and the fire extinguishing member 36 .

In this embodiment, the heat insulating member 38 is, for example, a flat plate having a size capable of covering the entire back surface of the surface member 24 on the corridor side.
The thickness of the heat insulating member 38 may be appropriately set according to the heat insulating capacity. It may be thinner than the distance (dimension) between member 24 and extinguishing member 36 .

When the thickness of the heat insulating member 38 is thinner than the distance (dimension) between the surface member 24 on the corridor side and the fire extinguishing member 36, the heat insulating member 38 is placed in contact with the rear surface 24a of the surface member 24 facing the corridor side. , or may be stacked so as to be in contact with the fire extinguishing member 36. In this case, the heat insulating member 38 may be attached to the surface member 24 or the fire extinguishing member 36 by using fixing means such as a heat-resistant adhesive used for fixing the fire extinguishing member 36 .

FIG. 3 is a diagram showing the action of the fire extinguishing member.
Assume that a fire breaks out in the living room with the door 20 closed. When the temperature of the surface member 22 on the living room side reaches the operating temperature of the fire extinguishing agent due to the fire, the fire extinguishing agent inside the door 20 changes from a solid state to an aerosol state. This change from a solid state to an aerosol state is accompanied by rapid expansion of the volume, and a plurality of discharge portions 32 provided on the upper end surface member 29 alone in the door 20 cause the discharge to the outside of the door 20, the upper frame 18 and the door 20. released into the gap. The door 20 is released into the gap between the upper frame 18 and the door 20 because the surface member 24 is in close contact with the door contact surface 18b or set to a gap narrower than the gap between the upper end surface member 29 and the surrounding surface 18a. The fire extinguishing agent is discharged from between the upper end surface member 29 and the surrounding surface 18a toward the living room as indicated by the arrow f in the enlarged view of FIG. The fire extinguishing agent discharged into the living room floats in the living room and contributes to extinguishing the fire.

According to the above embodiment, even if there is no other fire extinguishing equipment in the living room, it can be operated as one of fire extinguishing equipment in the living room. It can contribute to fire extinguishing.
In addition, since the heat insulating member 38 is provided on the passage side, even if a fire breaks out on the passage side, it is possible to prevent the extinguishing agent from being discharged into the living room. In other words, when there are people in the living room, it is possible to avoid discharging the fire extinguishing agent toward the people in the room due to the fire on the aisle side.

FIG. 4 is a diagram showing another release form of the extinguishing agent.
In the above embodiment, the discharge part 32 formed on the upper end surface member 29 of the door 20 is used as the discharge port, and the fire extinguishing agent is discharged into the living room from between the upper end surface member 29 of the door 20 and the upper frame 18 of the door frame 10. However, it is not limited to this, and the door 20 and the door frame 10 may be appropriately processed so that the fire extinguishing agent is discharged in the intended direction.

For example, as shown in FIG. 4, the surface member 22 on the living room side is provided with an opening that constitutes the discharge part 32, and the surface member 22 is provided with a small door 40 that closes the opening during normal (non-fire) times and opens the opening during a fire. should be attached to For example, the small door 40 may be attached to the surface member 22 via a hinge or the like. The opening and closing of the small door 40 may be controlled by automatically detecting the temperature caused by the fire and mechanically operating according to the temperature. By attaching the small door 40 in this way, the fire extinguishing function can be imparted to the door 20 without impairing the design of the door 20 .
The opening and closing of the small door 40 is not limited to a hinge, and may be a slide type or the like.

When the small door 40 is rotated by a hinge as described above, it is preferable to attach the hinge to the lower side of the opening forming the release portion 32 so that the upper side of the small door 40 opens. By attaching the small door 40 in this way, the aerosol-like fire extinguishing agent inside the door 20 can be ejected upward in the living room or corridor.
In a fire, rising flames cause the temperature on the ceiling side to be higher than the temperature on the floor side. Therefore, by discharging the aerosolized fire extinguishing agent upward in the door 20 so that the upper side of the small door 40 opens, the fire can be extinguished and spread more.
The position where the small door 20 is provided on each surface member 22; 24 is preferably provided on the upper side of the door as much as possible. Moreover, the shape of the small door 20 may be set as appropriate, and the shape may be different on the side of the room and on the side of the aisle.
Moreover, the discharge part 32 is not limited to the above-described one, and may be configured by an opening such as a slit or a punching hole.

FIG. 5 is a diagram showing another arrangement form of the fire extinguishing member on the door.
In the above-described embodiment, the door 20 is configured to respond to a fire in a living room, but the present invention is not limited to this, and the door 20 may be configured to selectively respond to a fire in a living room or passageway.
As shown in FIG. 5, a fire extinguishing member 36 is attached to each of the rear surfaces 22a; 22b of the surface members 22; 24 on both the living room side and the corridor side, and a heat insulating member 38 is provided between them, so that fires in the living room or the corridor can be selected. can be appropriately matched.

In this case, the fire extinguishing member 36; 36 is fixed so as to be in contact with the back surface of the surface member 22; For example, small doors 40; 40 that operate as described above may be provided on the surface members 22; 24 on the side of the living room and on the corridor side, respectively, so that the air can be selectively ejected into the living room and the corridor.

In the above-described embodiment, the extinguishing member 36 is provided so as to cover the entire surface of the rear surface 22a of the surface member 22 and the rear surface 24a of the surface member 24 that constitute the door 20. Change it.
For example, a reinforcing member may be provided inside the door 20 . In such a case, the reinforcing member should be avoided and the rear surface 22a of the surface member 22 and the rear surface 24a of the surface member 24 should be partially covered.

In the above embodiment, the hinged door device is used as an example of fittings according to the present invention, but the present invention is not limited to this. For example, it may be a door of a sliding door device, a partition, or the like.
When the technology according to the present invention is applied to a partition, the partition extending from the floor to the ceiling has, as described in the above embodiment, a fire extinguishing member, a heat insulating member, and an opening for discharging a fire extinguishing agent inside the partition. should be provided. Preferably, a fire extinguishing member may be provided corresponding to the surface member facing each space so that the fire extinguishing function selectively acts on the two spaces partitioned by the partition. Needless to say, a heat insulating member is interposed between the extinguishing members.

In addition, if the height of the partition does not reach the ceiling, a fire extinguishing member, a heat insulating member, and an opening for discharging the fire extinguishing agent may be provided between the surface members facing the two spaces partitioned by the partition. good. In this case, since the space partitioned by the partition is one on the ceiling side, the heat insulating member is eliminated and only the fire extinguishing member is provided between the surface members, and the aerosolized fire extinguishing agent between the surface members is released to the outside. An opening may be provided so that it can be discharged.

Moreover, fittings such as the door of the hinged door device, the door of the sliding door device, and the partition are provided with two surface members facing each space partitioned by them, but the present invention is not limited to this. For example, in fittings such as a shutter device, one opening/closing body is configured by combining slats formed by pressing a sheet of steel plate into a predetermined shape. can be applied. A case where the technology according to the present invention is applied to a shutter device will be described below.

FIG. 6 is a plan view of the slat shutter device and a cross-sectional view of the slat.
As shown in FIG. 6, it is a slat type shutter device (hereinafter simply referred to as a shutter device). It is installed in the opening formed in the structural frame. The structural skeleton is, for example, an outer wall that separates the inside and outside of a structure such as a house, a building, a warehouse, or a factory, or an inner wall that separates an internal space inside the structure. The opening is formed in the structure frame and formed as a space that connects two spaces partitioned by the structure frame.

The shutter device 100 generally moves along the longitudinal direction of the guide rails 200; Alternatively, it includes a shutter curtain 300 as an opening and closing member that closes, a shutter case 140 provided above the opening 120 and the guide rails 200, and a winding mechanism 500 installed in a storage space inside the shutter case 140. .

The width direction indicates a direction (horizontal direction) perpendicular to the opening/closing (vertical) direction of the shutter curtain 300 , and the “depth direction” indicates the thickness (front-rear) direction of the shutter curtain 300 . The "winding direction" refers to the direction in which the shutter curtain 300 rises along the guide rail 200 to open the opening 120. It should indicate the direction in which it descends and the opening 120 closes.

As shown in FIG. 6 , the guide rails 200 and 200 are erected with their longitudinal directions perpendicular to the structural skeleton 110 with a portion thereof embedded in the structural skeleton 110 . The guide rails 200; 200 are hollow members having an internal structure with a substantially U-shaped cross section. The guide rails 200; 200 are arranged so that the U-shaped openings face each other. Both ends of the shutter curtain 300 in the width direction, which will be described later, are inserted into the guide rails 200; As a result, the ends of the shutter curtain 300 in the width direction are guided in the opening/closing direction (vertical direction) by the guide rails 200 ;

The shutter curtain 300 is composed of multiple slats 310 . Each slat 310 is a plate-shaped member made of metal such as steel, stainless steel, or aluminum, and extending along the width direction of the opening 120 . Curved curled portions 320 and 330 are formed at the end (upper end) in the winding direction and the end (lower end) in the delivery direction of each slat 310 .

The curled portion 320 curves radially inwardly of the cylindrical wheel 520 that constitutes the winding mechanism 500 and engages with the curled portion 330 formed on the adjacent slat 310 in the winding direction. The curled portion 330 curves radially inwardly of the wheel 520 and engages the curled portion 320 formed on the adjacent slat 310 in the payout direction. As a result, the vertically adjacent slats 310 are rotatably connected.

As shown in FIG. 6B, the space forming body 400 is fixed to the rear surface 310B of each slat 310 formed as a flat surface by fixing means (not shown) such as adhesive or welding. The space forming body 400 is made of, for example, the same material as the slat 310, has a width dimension set to be approximately the same as that of the slat 310, and both ends thereof are swallowed into the guide rails 200;200.

The space forming body 400 has a vertical dimension shorter than that of the slat 310, and includes a main body portion 430 facing the rear surface 310B of the slat 310, and extending forward in the depth direction from both upper and lower end sides of the main body portion 430 to curl. The upper and lower horizontal portions 420; 420 are set to a depth dimension similar to the depth dimension of the portion 330, and the horizontal portions 420; The upper and lower fixing portions 410 and 410 are fixed to each other, and the cross-sectional shape as a whole is substantially C-shaped.

Therefore, by fixing the space forming body 400 to the rear surface 310B of the slat 310, the rear surface 310B of the slat 310 and the front surface 430A of the main body portion 430 are separated by the depth dimension of the horizontal portions 420; A space S is formed between the body 400 and the body portion 430 . That is, in this embodiment, the slats 310 and the space forming body 400 correspond to the surface member according to the invention.

Then, the fire extinguishing member 36 and the heat insulating member 38 may be provided in the space S formed by the slats 310 and the space forming body 400 . For example, in the shutter device 100, the front side of the slat 310 faces the outdoors and the rear side faces the interior. Therefore, in FIG. Member 36 is shown positioned.

In this case, for example, by providing an opening (not shown) communicating with the space S in the main body 430 of the space forming body 400, etc., the aerosol-like fire extinguishing agent in the space S can be discharged indoors. can. Further, since the heat insulating member 38 is provided between the slat 310 and the fire extinguishing member 36, it is possible to prevent the fire extinguishing member 36 from operating unnecessarily due to a fire that occurs outdoors.

It should be noted that the present invention is not limited to the slat-type shutter device, and can be applied to fittings such as a panel-type shutter device.
That is, like the slat 310 of the conventional shutter device 100, even if the member corresponding to the surface member in the present invention is a piece of fittings, a plate-shaped member ( The other surface member) is provided, fire extinguishing members, heat insulating members, etc. are accommodated in the formed space, and a discharge port is provided in one of the surface members so that the aerosolized fire extinguishing agent is discharged from the space in the desired direction. should be formed.

As explained above. By opening and closing the opening between one space and the other space, or by equipping fittings used for partitioning spaces with fire-extinguishing materials, it is possible to prevent fires even when there are no people or other fire-extinguishing equipment. Fire extinguishing activities can be performed automatically.

Although the present invention has been described above based on the embodiments, the technical scope of the present invention is by no means limited to the above-described embodiments, and it is understood that various modifications and improvements can be made by combining the embodiments. clear to the trader. In addition, it is clear from the description of the scope of claims that such forms with various modifications and improvements can be included in the technical scope of the present invention.

For example, in the above-described embodiment, the fire extinguishing agent that constitutes the fire extinguishing member is described as being one that changes from a solid state to an aerosol state, but the present invention is not limited to this. The fire extinguishing agent may be, for example, a powder fire extinguishing agent, a foam fire extinguishing agent, a liquid extinguishing agent, an inert gas, a gaseous extinguishing agent such as carbon dioxide, or the like. When using these fire extinguishing agents, they are stored under pressure in a container that can be placed between two surface members that make up the building material, and the fire extinguishing agent is separated by the building material from the discharge part provided in the building material. The fire extinguishing member may be constructed so as to be capable of being discharged into the space where the fire extinguisher is located.

1 hinged door device, 22; 24 surface member, 32 discharge part, 36 fire extinguishing member,
38 Thermal insulation member.

Claims (4)

A fitting used for opening and closing an opening between one space and the other space, or as a partition between spaces,
The fittings are
a plate-shaped surface member facing one space;
a plate-shaped surface member provided at a predetermined distance from the surface member facing the one space and facing the other space;
A fire extinguishing member provided between the surface member facing the one space and the surface member facing the other space, and releasing a fire extinguishing agent when a predetermined temperature is reached;
a release portion that releases the fire extinguishing agent released from the fire extinguishing member to the outside from between the surface member facing the one space and the surface member facing the other space;
A fitting characterized by comprising The fire extinguishing member is configured by solidifying a fire extinguishing agent that changes from a solid state to an aerosol state when reaching a predetermined temperature, and the surface member facing the one space and the surface member facing the other space. 2. The fitting according to claim 1, wherein the fire extinguishing agent changed into an aerosol between and is discharged to the outside from the discharge part. The fire extinguishing member is provided on the surface member side facing one space,
Further comprising a heat insulating member provided between the fire extinguishing member and the surface member facing the other space and blocking heat from the surface member facing the other space,
3. The fitting according to claim 2, wherein the extinguishing agent discharged from the discharge part is discharged to one space. The fire extinguishing member is provided on the surface member side facing the one space and the surface member side facing the other space,
A surface member facing one space provided between a fire extinguishing member provided on the side of the surface member facing the one space and a fire extinguishing member provided on the side of the surface member facing the other space. further comprising a heat insulating member that blocks heat and the heat of the surface member facing the other space,
3. The fitting according to claim 2, wherein the extinguishing agent discharged from the discharge part is selectively discharged into one space or the other space.

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