JP6037398B2 - Sprinkler head - Google Patents

Description

  The present invention relates to a sprinkler head that operates in the event of a fire and discharges a fire extinguishing liquid.

  For sprinkler heads with a cover that discharges fire extinguishing liquid in the event of a fire, etc., an alloy that melts at a temperature lower than the temperature at which the heat-sensitive member installed on the head senses heat and releases the fire extinguishing liquid There is a type in which a retainer (cage) and a cover are connected to each other (see, for example, Patent Document 1).

International Publication 2010/038253

  The sprinkler needs to protect and shield the heat-sensitive member with a cover from the viewpoint of preventing malfunction caused by deformation or destruction of the heat-sensitive member that detects a fire due to physical contact or the like and maintaining aesthetics.

  However, the sprinkler head in which the cover and the head are joined using an alloy that melts at a temperature lower than the temperature at which the heat-sensitive member is broken or deformed as shown in Patent Document 1, the cover and the sprinkler head The structure of the connecting part is complicated. For this reason, depending on the installation location of the sprinkler and the fire occurrence conditions, the alloy may remain shielded from combustion products such as flames, hot air currents, and high-temperature smoke, even though a fire has occurred. The alloy may not melt and the cover may not fall. Even if the alloy and the flame are not cut off, if it is temporary, solidification may start immediately and the cover may not fall even if the alloy melts. As a result, there is a problem that the heat sensitive member protected by the cover cannot sense heat, the destruction or deformation thereof does not occur, and the fire extinguishing liquid may not be released.

  Therefore, even in the case of a sprinkler head with a cover, it is necessary to ensure that the heat sensitive member can sense heat.

  The present invention for achieving the above object includes a holder attached to a ceiling or a side wall, a main body portion disposed in the holder and connected to a water supply pipe, and a cover held by the holder and protecting the main body portion. A sprinkler head having a discharge part that discharges a fire extinguishing liquid, a seal part that seals the discharge part, and presses the seal part toward the discharge part to generate heat. A sprinkler head that includes at least a heat-sensitive member that is destroyed by sensing, the cover includes a ventilation portion, and is detachable from the holder by the pressure of a fire-extinguishing liquid discharged from the discharge portion. .

  The holder includes a collar portion, and a fitting groove that fits the cover is formed on one surface of the collar portion. Also, a through hole is formed in the center of the holder, the fitting groove is formed on the outer peripheral side of the through hole, and the main body is disposed in the holder in a state of passing through the through hole. The

  In the present invention, the heat-sensitive member directly senses a combustion product such as a flame or high-temperature smoke through the ventilation portion provided in the cover, so that the heat-sensitive member is deformed by heat before the cover falls. Or it can be destroyed and the fire-extinguishing liquid can be reliably discharged.

  In addition, the cover can be easily detached from the holder by the pressure of the discharged fire extinguishing liquid by adopting a structure in which the coupling portion between the holder and the cover is merely fitted by the fitting groove. And

  Further, by providing the through hole, forming the fitting groove on the outer peripheral side of the through hole, and having the main body portion disposed in the holder in a state of passing through the through hole, When the cover is detached, it is possible to prevent occurrence of a situation where the cover is caught on the main body and the discharge of the fire extinguishing liquid is prevented.

It is a perspective view which shows the main-body part which comprises a sprinkler head. It is a longitudinal cross-sectional view of the main-body part which comprises a sprinkler head. It is a perspective view which shows the side attached to the ceiling etc. of the holder which comprises a sprinkler head. It is a perspective view which shows the side exposed when the holder which comprises a sprinkler head is attached to a ceiling etc. 3 is a front view of a cover according to Embodiment 1. FIG. It is a front view of the state in which the main-body part is supported by the holder in the state which penetrated the holder. It is a top view of the state by which the main-body part was supported by the holder. FIG. 3 is a front view of a state in which the main body is supported by the holder and the cover of Embodiment 1 is fitted to the holder. It is the perspective view which showed the state which the main-body part attached to the ceiling was supported by the holder, and the cover of Embodiment 1 fitted the holder and protected the main-body part from the downward direction. It is the perspective view which showed the cover of Embodiment 2 from the downward direction. It is the perspective view which showed the state which the main-body part attached to the ceiling was supported by the holder, and the cover of Embodiment 2 fitted the holder and protected the main-body part from the bottom. FIG. 12 is a partially transparent perspective view of FIG. 11. It is the perspective view which showed the cover of Embodiment 3 from the downward direction. It is the perspective view which showed the state which the main-body part attached to the ceiling was supported by the holder, and the cover of Embodiment 3 fitted the holder and protected the main-body part from the downward direction. It is a partially transparent perspective view of FIG. It is the perspective view which showed the cover of Embodiment 4 from the downward direction. It is the perspective view which showed the state which the main-body part attached to the ceiling was supported by the holder, and the cover of Embodiment 4 fitted the holder and protected the main-body part from the bottom. It is a partially transparent perspective view of FIG. It is the perspective view which showed the cover of Embodiment 5 from the downward direction. It is the perspective view which showed the state which the main-body part attached to the ceiling was supported by the holder, and the cover of Embodiment 5 fitted the holder and protected the main-body part. It is a partially transparent perspective view of FIG.

(Embodiment 1)
As shown in FIG. 1, the main body portion 8 of the sprinkler head 1 has a discharge portion 2 that discharges a fire extinguishing liquid. The discharge part 2 includes a screw part 20 for connecting and screwing to a water supply pipe embedded in a ceiling or the like. The screw part 20 is formed in a cylindrical shape and includes an opening part 21 that opens upward, so that the fire extinguishing liquid can enter through the opening part 21.

  As shown in FIG. 2, a nozzle-like discharge port 22 penetrating in the vertical direction is formed inside the discharge portion 2. The lower end of the discharge port 22 is closed by the seal portion 30 and the cap 31 to prevent the fire extinguishing liquid from being discharged downward from the discharge port 22 at normal times.

  As shown in FIGS. 1 and 2, a thermal member 4 that presses the seal portion 30 and the cap 31 toward the discharge port 22 is disposed below the seal portion 30 and the cap 31. The heat sensitive member 4 is a glass bulb and is supported from below by an impress screw 5 below.

  A deflector 6 formed in a disc shape is formed below the heat-sensitive member 4 and the impress screw 5 in the vertical direction. The surface direction of the deflector 6 faces the discharge port 22.

  As shown in FIG. 1, the discharge part 2 and the deflector 6 are connected by a connecting part 7. The connecting portion 7 includes a pair of frames 70 that protrude from the side portion of the discharge portion 2 toward the radially outer peripheral side of the deflector 6 and are connected toward the center portion of the deflector 6. The deflector 6 has a plurality of slits 60 formed at equal intervals and in the radial direction at the outer peripheral edge of the arc. And between two adjacent slits 60, claw-shaped collar portions 61A to 61L partitioned by the slits 60 are formed. In the illustrated example, twelve slits 60 are formed, and twelve collar portions 61A to 61L are formed accordingly. Note that the number of claw-shaped collar portions partitioned by the slits 60 may be 16, for example.

  A holder 80 shown in FIG. 3 is attached to a ceiling or a side wall, and includes a circular through hole 81 formed in the center of the holder 80, a holder cylinder portion 82 rising vertically from the outer periphery of the through hole 81, and a through hole. 81, and a flange portion 84 that extends in a circular shape in the horizontal direction from the outer periphery of 81. On the inner wall of the holder cylinder portion 82, a groove 83 screwed into a joint portion such as a ceiling portion and a protruding portion 85 that supports the main body portion 8 by hooking the connecting portion 7 shown in FIG. 1 are formed. Further, as shown in FIG. 4, the upper edge of the cover 90 shown in FIG. An annular fitting groove 86 for fitting with the portion 93 is formed. One surface of the flange portion 84 in which the fitting groove 86 is formed is a surface that is exposed when the holder 80 is attached to the ceiling or the side wall.

  Note that the method of joining the holder 80 and the ceiling part or the like may be other than screwing. For example, the holder 80 may be screwed into the ceiling from the inner wall of the holder cylinder part 82. Further, the through-hole 81 may not be circular, and may be, for example, a quadrangular shape. However, the area through which the deflector 6 shown in FIG. The collar portion 84 may extend in a triangular shape, a quadrangular shape, or the like, and the fitting groove 86 may be a triangular ring shape or a square ring shape. Further, the fitting groove 86 may be formed in an annular shape as in the example of FIG. 4 or may have a configuration in which a plurality of grooves are formed intermittently. Further, the main body 8 may not be supported by the holder 80 without the protruding portion 85 and may be disposed in the holder 80 only. The material of the holder 80 is metal or engineer plastic.

  As shown in FIG. 5, the cover 90 that protects the main body 8 shown in FIG. The cover 90 is provided with a ventilation portion 91 and a ventilation portion 92 that extend over the side surface of the cylindrical portion 95 and the side surface of the truncated cone portion 94. Further, the upper portion of the cover 90 has an upper edge portion 93 that fits into the fitting groove 86 shown in FIG. The ventilation part 91 and the ventilation part 92 are provided at equal intervals on the side surface of the cover 90, the ventilation part 91 is rectangular, and the ventilation part 92 has a spoon shape in which a rectangle and a circle are continuous. The material of the cover 90 is metal or engineer plastic. The shapes of the ventilation portion 91, the ventilation portion 92, and the cover 90 are not limited to those described above. For example, the ventilation portion 91 and the ventilation portion 92 may have the same shape, and the overall shape of the cover 90 is a cylinder. It may be.

  As shown in FIGS. 6 and 7, the main body portion 8 is passed through the holder cylinder portion 82 from above, and the connecting portion 7 shown in FIG. 1 is hooked on the protruding portion 85 in a state where the main body portion 8 passes through the through hole 81. Thus, the main body 8 is supported by the holder 80.

  As shown in FIG. 8, the upper edge portion 93 of the cover 90 is pressed vertically upward against the fitting groove 86 (see FIG. 4) of the holder 80 that supports the main body portion 8. Will fit.

  As shown in FIG. 9, the main body 8 is screwed into a pipe embedded in the ceiling 500 by the screw portion 20 shown in FIG. 1, and the holder 80 is joined to the ceiling 500 by the groove 83 shown in FIG. Screwed on. The holder 80 supports the main body portion 8 and is fitted to the cover 90 as shown in FIGS. When a fire occurs, combustion products such as flames and high-temperature smoke pass through the ventilation portions 91 and 92 and reach the heat-sensitive member 4, so that the heat-sensitive member 4 is deformed or destroyed. Next, when the pressed seal portion 30 shown in FIG. 2 is opened, the fire extinguishing liquid that has entered from the opening 21 shown in FIG. 2 is discharged downward in the vertical direction from the discharge port 22 shown in FIG. The Furthermore, pressure is applied to the bottom surface of the cover 90 due to the discharge of the fire extinguishing liquid. Here, since the cover 90 is only fitted in the fitting groove 86 of the holder 80, the upper edge portion 93 of the cover 90 is detached from the fitting groove 86 by the pressure of the fire extinguishing liquid. Further, since the fitting groove 86 of the holder 80 is formed on the outer peripheral side of the through hole 81 shown in FIG. 4, the cover 90 removed from the fitting groove 86 is not caught on the main body 8 from the holder 80. Detach vertically downward and spray fire extinguishing liquid.

(Embodiment 2)
A cover 100 shown in FIG. 10 includes a ring-shaped component 101 at the top of the cover 100, and a cylinder 102 made of a mesh-like member is coupled to the inner periphery of the ring-shaped component 101 in a vertically downward direction. The mesh portion of the cylinder 102 becomes the ventilation portion 103. The lower part of the cover 100 has a nested structure 104 by stacking members in a roll shape. Four frames 105 extend vertically upward from members constituting the nesting structure 104 under the cover, and these frames 105 pass through the outer peripheral side of the side surface of the cylinder 102 and are coupled to the bottom surface of the ring-shaped component 101. The ventilation portion 103 includes a divided ventilation portion 106 divided by a frame 105. The upper surface of the ring-shaped component 101 is fitted into the fitting groove 86 of the holder 80 shown in FIG.

  As shown in FIGS. 11 and 12, the main body portion 8 is screwed into a pipe embedded in the ceiling 500 by the screw portion 20 shown in FIG. 1, and the holder 80 is attached to the ceiling by the groove 83 shown in FIG. 500 joints are screwed together. The holder 80 supports the main body 8 and is fitted to the cover 100. When a fire occurs, combustion products such as flames and high-temperature smoke pass through the ventilation portions 103 and 106 and reach the heat-sensitive member 4, so that the heat-sensitive member 4 is deformed or destroyed. Next, the pressed seal portion 30 shown in FIG. 2 is opened, so that the fire-extinguishing liquid that has entered from the opening portion 21 is discharged downward in the vertical direction from the discharge port 22. Furthermore, pressure is applied to the cover 100 due to the release of the fire extinguishing liquid. Here, since the cover 100 is only fitted in the fitting groove 86 of the holder 80, the upper surface of the ring-shaped component 101 is detached from the fitting groove 86 by the pressure of the fire extinguishing liquid. Further, since the fitting groove 86 of the holder 80 is formed on the outer peripheral side of the through hole 81 shown in FIG. 4, the cover 100 removed from the fitting groove 86 is removed without being caught by the main body 8 from the holder 80. Release fire extinguishing liquid.

(Embodiment 3)
A cover 200 shown in FIG. 13 is provided with a cylinder 201 made of a mesh-like member on the top of the cover 200. The mesh portion of the tube 201 becomes the ventilation portion 202. Four ring-shaped parts 203 are equally arranged in the vertical direction on the outer peripheral side of the tube 201, and four ring-shaped parts are formed by four columns 205 extending vertically upward from a ring-shaped part 204 provided in the lower part of the cover 200. The component 203 is fixed. A slit divided in the vertical direction by the ring-shaped component 203 becomes a slit-shaped ventilation portion 206. The upper edge 207 of the cylinder 201 is fitted in the fitting groove 86 of the holder 80 shown in FIG.

  As shown in FIGS. 14 and 15, the main body 8 is screwed into a pipe embedded in the ceiling 500 by the screw part 20 shown in FIG. 1, and the holder 80 is connected to the ceiling by the groove 83 shown in FIG. 500 joints are screwed together. The holder 80 supports the main body 8 and is fitted to the cover 200. When a fire occurs, combustion products such as flames and high-temperature smoke pass through the ventilation portions 202 and 206 and reach the heat-sensitive member 4 so that the heat-sensitive member 4 is deformed or destroyed. Next, the pressed seal portion 30 shown in FIG. 2 is opened, so that the fire-extinguishing liquid that has entered from the opening portion 21 is discharged downward in the vertical direction from the discharge port 22. Furthermore, pressure is applied to the cover 200 by the discharge of the fire extinguishing liquid. Here, since the cover 200 is only fitted in the fitting groove 86 of the holder 80, the upper edge 207 of the cylinder 201 is detached from the fitting groove 86 by the pressure of the fire extinguishing liquid. Further, since the fitting groove 86 of the holder 80 is formed on the outer peripheral side of the through hole 81 shown in FIG. 4, the cover 200 removed from the fitting groove 86 is removed without being caught by the main body 8 from the holder 80. Release fire extinguishing liquid.

(Embodiment 4)
A cover 300 shown in FIG. 16 has a shuttle-like shape as a whole cover. A cylinder 301 made of a mesh-like member is provided inside the upper portion of the cover 300, and the mesh portion of the cylinder 301 serves as a ventilation portion 302. The ventilation portion 302 is equally divided by four frames 303 provided on the upper portion of the cover 300, and individual regions divided by the frame 303 serve as the separation ventilation portion 304. The upper edge 305 of the cover 300 is fitted in the fitting groove 86 of the holder 80 shown in FIG.

  As shown in FIGS. 17 and 18, the main body 8 is screwed into a pipe embedded in the ceiling 500 by the screw part 20 shown in FIG. 1, and the holder 80 is connected to the ceiling by the groove 83 shown in FIG. 500 joints are screwed together. The holder 80 supports the main body 8 and is fitted to the cover 300. When a fire occurs, combustion products such as flames and high-temperature smoke pass through the ventilation portions 302 and 304 and reach the thermal member 4, so that the thermal member 4 is deformed or destroyed. Next, the pressed seal portion 30 shown in FIG. 2 is opened, so that the fire-extinguishing liquid that has entered from the opening portion 21 is discharged downward in the vertical direction from the discharge port 22. Further, pressure is applied to the cover 300 by the discharge of the fire extinguishing liquid. Here, since the cover 300 is only fitted in the fitting groove 86 of the holder 80, the upper edge 305 of the cover 300 is detached from the fitting groove 86 by the pressure of the fire extinguishing liquid. Further, since the fitting groove 86 of the holder 80 is formed on the outer peripheral side of the through hole 81 shown in FIG. 4, the cover 300 detached from the fitting groove 86 is removed without being caught by the main body 8 from the holder 80. Release fire extinguishing liquid.

(Embodiment 5)
A cover 400 shown in FIG. 19 is provided with a cylinder 401 made of a mesh-like member inside the upper part of the cover 400, and the mesh portion of the cylinder 401 serves as a ventilation portion 402. The lower part of the cover 400 is fitted with the cylinder 403. From the upper edge of the tube 403, twelve evenly arranged frames 404 extend upward in the vertical direction through the outer peripheral side of the side surface of the tube 401. The ventilation part 402 is equally divided by the frame 404 to form a slit-like ventilation part 405. The frame 404 is fitted into the fitting groove 86 of the holder 80 shown in FIG.

  20 and 21, the main body 8 is screwed into a pipe embedded in the ceiling 500 by the screw portion 20 shown in FIG. 1, and the holder 80 is connected to the ceiling by the groove 83 shown in FIG. It is screwed to 500 joining sites. The holder 80 supports the main body 8 and is fitted to the cover 400. When a fire occurs, combustion products such as flames and high-temperature smoke pass through the ventilation portions 402 and 405 and reach the heat-sensitive member 4, so that the heat-sensitive member 4 is deformed or destroyed. Next, the pressed seal portion 30 shown in FIG. 2 is opened, so that the fire-extinguishing liquid that has entered from the opening portion 21 is discharged downward in the vertical direction from the discharge port 22. Furthermore, pressure is applied to the cover 400 by the discharge of the fire extinguishing liquid. Here, since the cover 400 is only fitted in the fitting groove 86 of the holder 80, the frame 405 of the cover 400 is detached from the fitting groove 86 by the pressure of the fire extinguishing liquid. Further, since the fitting groove 86 of the holder 80 is formed on the outer peripheral side of the through hole 81 shown in FIG. 4, the cover 400 is detached without being caught by the main body 8 from the holder 80, and fire extinguishing liquid is sprayed. The

  In addition, although the said embodiment demonstrated the case where each cover was attached to a ceiling, a cover may be attached to a side wall.

1: Sprinkler head 2: Discharge part 20: Screw part 21: Opening part 22: Discharge port 30: Seal part 31: Cap 4: Thermal member 5: Impress screw 6: Deflector 60: Slit 61A to 61L: Collar part 7: Connection Portion 70: Frame 8: Body portion 80: Holder 81: Through hole 82: Holder tube portion 83: Groove 84: Brim portion 85: Projection portion 86: Fitting groove 90: Cover 91: Ventilation portion 92: Ventilation portion 93: Cover Upper edge portion 94: truncated cone portion 95: cylindrical portion 100: cover 101: ring-shaped part 102: tube 103: vent portion 104: nested structure 105: frame 106: partitioning vent portion 200: cover 201: tube 202: vent portion 203 : Ring-shaped part 204: Ring-shaped part 205: Post 206: Slit-shaped ventilation part 207: Upper edge part 300: Cover 301: Tube 302: Ventilation portion 303: Frame 304: Separation ventilation portion 305: Upper edge portion 400: Cover 401: Tube 402: Ventilation portion 403: Tube 404: Frame 405: Slit-shaped ventilation portion 500: Ceiling

Claims (1)

A sprinkler head comprising a holder attached to a ceiling or a side wall, a main body part disposed in the holder and connected to a water supply pipe, and a cover that is held by the holder and protects the main body part,
The main body includes a discharge part that discharges a fire extinguishing liquid, a seal part that seals the discharge part, and a heat-sensitive member that is destroyed by pressing the seal part toward the discharge part and sensing heat. At least,
The cover includes a ventilation part, and is arranged so as to be removable from the holder by the pressure of the fire extinguishing liquid discharged from the discharge part ,
The holder includes a collar portion, and one surface of the collar portion is formed with a fitting groove for fitting with the cover,
A through hole is formed in the center of the holder, and the fitting groove is formed on the outer peripheral side of the through hole,
The sprinkler head , wherein the main body portion is disposed in the holder in a state of passing through the through hole .

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