JP4777695B2 - Range hood fire extinguisher - Google Patents

Description

The present invention relates to a range hood fire extinguishing apparatus that extinguishes an oil fire such as a tempura pan attached to a range hood and applied to a gas range.

  Conventionally, as a range hood fire extinguisher for a house, a pressure accumulation type and a pressure type are mainly used. An accumulator type range hood fire extinguisher is prefilled with an inert gas such as nitrogen together with a fire extinguishing agent in a container, pressurized to a certain pressure, and fire extinguishing agent is pressurized and released from the nozzle by the operation of the fire detection unit. . In addition, a pressurized range hood fire extinguisher is filled with inert gas such as nitrogen gas in a small pressure vessel (cylinder), and the sealing plate of the pressure vessel is broken by the operation of the fire detection unit, and there is no additional pressure in another vessel. Pressurize and release the fire-extinguishing agent filled with pressure.

  Since all of these range hood fire extinguishing devices release the fire extinguishing agent by pressure, when activated, the fire extinguishing agent is released in a sprayed state in a wide range including the tempura pan from the nozzle.

On the other hand, both ends of the container containing the fire extinguisher are hung from the bottom of the range hood with wires, and the container itself is melted by the heat or flame caused by the tempura fire, thereby dropping the fire extinguisher in the container to the tempura pan and extinguishing the fire. Like to do.
JP-A-5-337212 Japanese Patent Laid-Open No. 10-127803 JP 2002-306624 A Japanese Patent No. 3127411

However, such a conventional range hood fire extinguishing apparatus has the following problems. First, in a range hood fire extinguishing device that discharges fire extinguishing chemicals by conventional pressure,
First, fire-extinguishing agents are widely released, polluting the kitchen, and making it difficult to clean up.
Second, because hot oil splatters, it can be dangerous if someone is nearby,
Third, since the filled fire extinguishing agent is released to other than the pan, it is necessary to keep the amount necessary to extinguish the tempura fire multiplied by the safety factor.
Fourth, because the amount of fire extinguishing agent increases, the size of the container increases.
Fifth, since internal pressure is applied, it is necessary to use a container having a predetermined pressure resistance performance.
There were problems such as.

In addition, the range hood fire extinguisher that melts the container itself and releases the extinguishing agent inside the container is the structure where the container melts because the container suspended by the string is melted by the heat of the flame and the extinguishing agent is dropped. There is no upper limit, and there is no guarantee that fire extinguishing agents will be injected into the tempura pan. Also, when a container melts with heat, a large amount of fire-extinguishing agent falls into the tempura pan at a time, so that high-temperature oil scatters to the surrounding area, causing a safety problem for nearby people. Furthermore, when a fire extinguishing agent is put into tempura oil burning at a high temperature, the flame becomes large and there is a possibility of causing a deflagration state.

An object of the present invention is to provide a range hood fire extinguishing apparatus that can reliably extinguish a fire with a small amount of fire extinguishing agent without scattering oil around the tempura fire.

  The present invention relates to a range hood fire extinguishing apparatus, a container main body storing an extinguishing chemical solution mounted at a position of a range hood opposite to a gas range burner in a non-pressurized state, a container main body, and being heated to a predetermined temperature. And a heat-sensitive head that spontaneously flows down the fire extinguishing liquid when it is fired.

As the first form of the thermal head in the range hood fire extinguishing apparatus of the present invention, the thermal head is:
A nozzle attached to the bottom of the container body and provided with an open hole;
A chain housed in the container body;
A fusible member that closes the opening of the nozzle;
A ventilation pipe provided in the nozzle, closed at the lower end with a soluble member and opened at the upper end in the container body;
Comprising a, when the meltable member is melted, said Rutotomoni chain communicates with the container body to the outside air by the ventilation pipe is dropped from the opening hole, thereby gravity flow extinguishing chemical along the chain by opening the opening hole .

As a second form of the thermal head in the range hood fire extinguishing apparatus of the present invention, the thermal head is:
A nozzle attached to the bottom of the container body and provided with an open hole;
A connecting rod connected to a chain stored in the container body;
A weight member that is placed on the communication rod and applies a load for pushing down the communication rod;
A fusible member that closes the opening of the nozzle;
A ventilation pipe provided in the nozzle, closed at the lower end with a soluble member and opened at the upper end in the container body;
The provided, when the meltable member is melted, the communication bars, leaving the weight member to Rutotomoni opening hole communicates with the container body to the outside air by opening the opening hole by the vent pipe is dropped with a chain, the chain A fire extinguisher solution is allowed to flow down along the way.

As a third form of the thermal head in the range hood fire extinguishing apparatus of the present invention, the thermal head is:
A nozzle mounted on the bottom of the container body and having an opening hole closed with a sealing plate;
A holder member having a through-hole disposed above the container body rather than the nozzle;
An operating shaft that is slidably inserted into the through hole of the holder member, forms a cutter that breaks the sealing plate of the nozzle at the lower end, and takes out the upper end through the holder member to the outside;
A fusible member that fixes a heat sensing plate to the upper end of the operating shaft and melts at a predetermined temperature;
A spring member for urging the operating shaft in the direction of the sealing plate of the head;
When the fusible member is melted, the heat sensing plate is detached from the operating shaft, and at the same time, the operating shaft is driven downward by the force of the spring member, and the sealing plate is broken by the cutter part at the tip to extinguish the fire extinguishing chemical solution. Let it flow down naturally from the head.

As the fourth form of the thermal head in the range hood fire extinguishing apparatus of the present invention, the thermal head is:
A nozzle mounted on the bottom of the container body and having an opening hole;
A holder member provided with a through hole disposed above the container body rather than the nozzle;
An operating shaft that is slidably inserted into the through hole of the holder member, and that is provided with a valve seat that closes the opening hole of the head at the lower end and communicates with the inside of the container that passes through the holder member and is taken out to the outside.
A fusible member that fixes a heat sensing plate to the upper end of the operating shaft and melts at a predetermined temperature;
A spring member that urges the operating shaft in a direction to open the valve seat;
When the fusible member melts, the heat sensing plate is detached from the operating shaft, and at the same time, the operating shaft is driven upward by the force of the spring member to release the opening of the valve seat and extinguish the fire from the head. Let the chemical flow down naturally.

Here, for the third and fourth forms of the thermal head in the range hood fire extinguishing apparatus of the present invention, the operating shaft has a hollow hole, and when the fusible member melts, the inside of the container passes through the hollow hole of the operating shaft. Communicate to the open air.

  According to the present invention, the fire extinguisher liquid is not pressurized and poured into the tempura pan by free-fall during a tempura fire, so that the oil can be prevented from greatly scattering and the danger to humans can be avoided reliably.

  In addition, by adjusting the nozzle hole of the thermal head so that it is located directly above the pan placed on the burner of the range and installing it on the range hood, the discharge position is specified, so the fire extinguishing liquid must be poured into the tempura pan without fail. Can do.

  In addition, since there is no pressure applied and the fire extinguisher liquid is released due to natural spillage from directly above, the fire extinguisher liquid is put into a 100% tempura pan, so there is no need to consider the loss due to the scattering of the fire extinguisher. The amount can be reduced, and the weight and size of the container can be reduced.

  In addition, since the fire extinguishing agent solution is quietly put into the tempura pan in small amounts, it is possible to prevent a deflagration phenomenon and an instantaneous flame burn-up.

  It is also possible to easily issue an alarm signal to the outside by operating the switch in conjunction with the operation of the thermal head.

  In addition, the absence of pressure eliminates the risk of loss or degradation of functions due to leakage of accumulated gas, etc., and there is no need to check the gas pressure, no pressure gauge, and no periodic inspection or maintenance. Equipment that maintains stable fire extinguishing performance can be supplied.

  In addition, it is not necessary to consider the handling of high-pressure gas, and it is easy to maintain and secure safety for general consumers.

In addition, when the heat sensing plate of the thermal head is arranged at the upper part of the container body, the appliance or the like when the heat sensing plate is arranged at the lower part of the container body is used to cause malfunction or failure of the fire extinguishing device. Can solve the problem.

FIG. 1 is an explanatory view of a first embodiment of a range hood fire extinguishing apparatus according to the present invention. In Figure 1, the range hood fire extinguishing apparatus 1 of the present invention is equipped with a sensitive thermal head 3 at the bottom of the container body 2 to be attached to the range hood. The container main body 2 is made of a heat-resistant plastic material, and stores a fire extinguishing liquid 4 in a non-pressurized state.

Sensitive thermal head 3 is fixed to the nozzle 5 in the lower portion of the container body 2, the nozzle 5 is provided with a stepped bore 6 which opens downward. The stepped hole 6 of the nozzle 5 is fixed by a fusible member 9 using a fusible metal that melts at a predetermined temperature due to a tempura fire in a state where the lower portion 7a of the connecting rod 7 is located. The communication rod 7 is accommodated in the container body 2 in which the extinguishing agent solution 4 is stored, and a flange portion 7b is formed in the middle. A plurality of outflow holes 8 are opened on the inner peripheral side of the flange portion 7 b of the communication rod 7.

  An air introduction hole 10 is opened at the upper part of the container body 2 facing the nozzle 5. A sealing member 11 is disposed inside the air introduction hole 10, and the air introduction hole is pressed by a coil spring 12 provided between the flange 7 b of the communication rod 7 and a spring receiver 13 formed inside the container body 2. 10 is closed. The ventilation member is configured by the sealing member 11 pressed by the air introduction hole 10 and the coil spring 12. At the same time, the coil spring 12 presses the communication rod 7 fixed to the stepped hole 6 of the nozzle 5 downward by the fusible member 9.

  Further, an alarm switch 14 provided outside the container main body 2 is arranged for the sealing member 11 that seals the air introduction hole 10. In this state, the alarm switch 14 has a switch knob as a sealing member. 11 and is switched off.

  FIG. 2 is an explanatory diagram of an operating state of the range hood fire extinguishing apparatus of FIG. 1 due to a tempura fire. The range hood fire extinguisher 1 of FIG. 1 is used by being attached to a range hood 15 as shown in FIG. 3 (A), for example. The attachment position of the range hood fire extinguishing apparatus 1 of the present invention with respect to the range hood 15 is attached to the position of the range hood 15 relative to the burner 17 of the gas range 16. For this reason, for example, when cooking is performed with the tempura pan 18 placed on the burner 17, the thermal head 3 provided in the range hood fire extinguishing apparatus 1 of the present invention is positioned immediately above the tempura pan 18.

  When the oil in the tempura pan 18 is heated and ignited as shown in FIG. 3 (B) in the use state as shown in FIG. The thermal head 3 of the range hood fire extinguishing apparatus 1 operates.

  In the operating state of the range hood fire extinguishing apparatus 1, the fusible member 9 closing the lower part of the nozzle 5 in FIG. 1 is melted by receiving heat from the tempura fire. When the fusible member 9 is melted, as shown in FIG. 2, the communication rod 7 is not supported, so that the communication rod 7 falls and the flange portion 7 b comes into contact with the step portion 6 a of the stepped hole 6. As the rod 7 falls, the sealing member 11 pressed by the coil spring 12 also falls and opens the air introduction hole 10. Further, when the sealing member 11 is dropped, the pressing of the switch knob of the alarm switch 14 is released, and the alarm switch 14 is turned on, so that an alarm signal can be output to the outside.

  The communication rod 7 dropped due to the melting of the fusible member 9 has the flange portion 7b in contact with the step portion 6a of the stepped hole 6, and in this state, the extinguishing chemical 4 stored in the container body 2 is It flows out naturally through the outflow hole 8 opened in the portion 7b. A part of the extinguishing agent 4a travels down the lower part 7a of the communication rod 7 and falls downward.

  For this reason, as shown in FIG. 3B, the fire-extinguishing liquid 4 flows from the range hood fire-extinguishing apparatus 1 while dropping down in a streak-like manner on the tempura pan 18 causing a fire due to the operation of the thermal head 3, causing a fire. The oil can be solidified into a gel by a chemical reaction with the oil to extinguish the fire.

  The fire extinguisher liquid 4 that naturally flows down from the range hood fire extinguishing device 1 when the thermal head 3 is activated flows down into the tempura pan 18 that causes a fire very quietly, and the natural flow of the fire extinguishing liquid 4 causes a fire. No oil from the tempura pan 18 scatters around.

  Further, the thermal head 3 of the range hood fire extinguishing apparatus 1 is disposed at a position opposite to the burner 17 of the gas range 16 and is accurately positioned with respect to the tempura pan 18 placed on the burner 17. The fire-extinguishing liquid 4 that has flowed out in the operation of is accurately poured into the tempura pan 18 causing the fire, and all the fire-extinguishing liquid 4 stored in the container body 2 is put into the tempura pan 18 causing the fire to be 100. % Fire extinguishing efficiency can be realized.

  Furthermore, when a fire extinguishing chemical solution is put into the tempura pan 18 that has caused a fire as in the past, a deflagration phenomenon or a dangerous state in which the flame is greatly burned is caused. In the present invention, the operation of the thermal head 3 is activated. Since the extinguishing agent liquid 4 flows into the tempura pan 18 which has become a thin line due to natural flow and causes a fire, the tempura pan 18 causing the fire due to the introduction of the extinguishing agent solution 4 causes a deflagration phenomenon, It is possible to reliably prevent a situation in which the flame is greatly increased.

  Here, according to the experiment by the inventors of the present application, the opening area of the outflow hole 8 through which the extinguishing liquid 4 is injected by natural fall when the thermal head 3 is operated is set to a total area of, for example, about several millimeters in diameter. Good fire extinguishing performance without oil splattering has been confirmed.

  The extinguishing agent solution 4 stored in the container body 2 is usually stored in the tempura pan 18 because, in the event of a fire, the entire amount of the extinguishing agent solution 4 can be poured into the tempura pan 18 that has caused a fire. The amount of fire extinguishing liquid 4 corresponding to the amount of oil used for cooking is sufficient, and it is not necessary to consider the shortage due to splashing around when the fire extinguishing liquid 4 is charged. As a result, the volume and size of the container body 2 can be reduced. As a result, the range hood fire extinguishing device 1 itself can be reduced in size and weight, and can be easily attached to the range hood 5.

  In FIG. 1, the fusible member 9 itself fixes the communication rod 7. However, the present invention is not limited to this, and any configuration may be used as long as the fusible member 9 is dropped when the fusible member 9 is melted. The communication rod 7 and the sealing member 11 may be integrally formed.

  FIG. 4 is an explanatory view of a second embodiment of the range hood fire extinguishing apparatus according to the present invention. In this embodiment, when operating by a tempura fire, the chain is lowered from the head to the tempura pan that is causing a fire, The fire extinguisher liquid 4 is poured into the tempura hot pot by natural flow along.

In FIG. 4, a nozzle 5 is fixed to the lower part of the container body 2 of the range hood fire extinguishing apparatus 1, and the opening of the stepped hole 6 is closed with a soluble member 9, and at the same time, the communication accommodated inside with the soluble member 9. The lower part 7a of the rod 7 is fixed. Connected to the upper portion 7 c of the communication rod 7 is the tip of a chain 21 that is stored with one end fixed to a chain storage portion 22 formed in the upper portion of the container body 2.

  A retainer 23 is attached to the flange portion 7b formed in the middle of the communication rod 7, and a coil spring 12 is disposed between the retainer 23 and a spring receiver 13 formed on the upper inner wall of the container body 2, and the communication rod 7 is moved downward. Is pressed.

  In the embodiment of FIG. 4 using such a chain 21, when the soluble member 9 is melted by the flame or heat caused by the tempura fire in the usage state attached to the range hood, the retainer is moved by the force of the coil spring 12. The connecting rod 7 is pushed out from the stepped hole 6 through 23 and the retainer 23 comes into contact with the stepped portion 6a and stops. However, the connecting rod 7 falls while pulling out the chain 21 from the nozzle 5, and a tempura causing a fire. Enter the pot. The dropped chain 21 is hung by hooking the container body 2 with a retaining ring having a large diameter provided at the rear end.

  For this reason, the fire extinguishing liquid 4 from the stepped hole 6 in which the nozzle 5 is opened causes a fire along the chain 21 that suspends the communication rod 7 from the through hole of the retainer 23 that is in contact with the stepped portion 6a. It will flow smoothly into the tempura pot that has been raised by natural flow.

  Further, in the embodiment of FIG. 4, the air inlet is not provided in the upper part of the container body 2 as in the embodiment of FIG. Since the fire extinguishing liquid 4 flows out through the chain 21 in which the hole 6 is opened and suspended, the fire extinguishing liquid 4 smoothly flows out of the container body 2 even if there is no air hole in the upper part, and a fire is caused by natural flow. Can be put into the tempura hot pot.

  Moreover, since the fire extinguishing liquid 4 flows down along the chain 21 that suspends the communication rod 7, it does not scatter to the surroundings on the way, and more reliably prevents scattering when the fire extinguishing liquid 4 is introduced. be able to. As the chain 21 used in the embodiment of FIG. 4, it is desirable to use a metal bead chain or the like, but any material having heat resistance that does not melt with tempura oil or flame may be used. The length of the chain 21 may be such that the connecting rod 7 stops immediately above the tempura pan. In this case, since the connecting rod 7 does not enter the tempura pan, oil does not scatter.

  FIG. 5 is an explanatory view of a third embodiment of the range hood fire extinguishing apparatus according to the present invention. In the third embodiment, a ventilation pipe is further provided for the second embodiment of FIG. It is characterized by.

  In FIG. 5, the structure of the thermal head 3 provided on the container body 2 in the range hood fire extinguishing apparatus 1 is the same as that of the second embodiment of FIG. 4, and a ventilation pipe 24 is further provided. In order to provide the ventilation pipe 24, in the embodiment of FIG. 5, the lower part of the nozzle 5 is made flat and a ring-shaped recess is formed on the lower surface, and the lower part of the lower end of the ventilation pipe 24 is positioned at the lower end recess. is doing. The upper part of the ventilation pipe 24 opens to a portion that becomes a cavity in the storage state of the extinguishant liquid 4 at the upper end of the container body 2.

  In the third embodiment of FIG. 5, when the soluble member 9 melts due to the flame or heat of the tempura fire, the connecting rod 7 falls while pulling out the chain 21, and at the same time the soluble member 9 melts. By dropping, the lower end of the ventilation pipe 24 is opened, and the hollow portion of the upper portion of the container body 2 communicates with the outside by the ventilation pipe 24, so that the extinguishing chemical solution 4 is introduced into the opened stepped hole 6, specifically, the stepped portion 6 a. It can be made to flow naturally through the through-hole of the retainer 23 that has come into contact.

  The connecting rod 7 may be any one that pulls the chain 21 downward, and its shape is not limited. Desirably, the communication rod 7 has a good shape for guiding the extinguishing chemical 4 to the fire extinguishing object.

  FIG. 6 is explanatory drawing of 4th Embodiment of the range hood fire extinguishing apparatus by this invention. The fourth embodiment of FIG. 6 is characterized in that the coil spring 12 that pushes down the connecting rod 7 used in the third embodiment of FIG. 4 is eliminated, and a weight member 25 is used instead. .

  The nozzle 5 in the thermal head 3 provided at the lower part of the container body 2 closes the opening of the stepped hole 6 with the fusible member 9 and simultaneously fixes the lower part 7 a of the connecting rod 7. The connecting rod 7 has a flange portion 7b in the middle, and a weight member 25 having a through hole is mounted on the upper portion of the flange portion 7b, and the tip of the chain 21 pulled out from the chain storage portion 22 is connected to the upper portion 7c. ing.

  In the fourth embodiment of FIG. 6, when the fusible member 9 melts due to the flame or heat of a tempura fire, the connecting rod 7 falls downward due to the weight of the weight member 25, pulling the chain 21. However, it falls into a tempura pot that has caused a fire. The weight member 23 abuts on the stepped portion of the stepped hole 6, passes through the through hole of the weight member 25 and along the chain 21, and naturally flows the fire extinguisher liquid 4 in the container body 2 into the tempura pan that has caused a fire. It will be washed away.

  By pressing the communication rod 7 using the weight member 25 in this way, the structure of the thermal head 3 can be simplified as compared with the case where a coil spring is used.

  FIG. 7 is an explanatory view of a fifth embodiment of the range hood fire extinguishing apparatus according to the present invention. In the fifth embodiment, a vent pipe is further provided for the fourth embodiment of FIG. It is characterized by.

  In FIG. 7, the structure of the thermal head 3 provided on the container body 2 in the range hood fire extinguishing apparatus 1 is the same as that of the fourth embodiment of FIG. 6, and a ventilation pipe 24 is further provided. In order to provide the ventilation pipe 24, in the embodiment of FIG. 7, the lower part of the nozzle 5 is flat and a ring-shaped recess is formed on the lower surface, and the lower part of the lower end of the ventilation pipe 24 is positioned in the lower end recess. is doing. The upper part of the ventilation pipe 24 opens to a portion that becomes a cavity in the storage state of the extinguishant liquid 4 at the upper end of the container body 2.

  In the fifth embodiment shown in FIG. 7, when the soluble member 9 melts due to the flame or heat of the tempura fire, the connecting rod 7 falls while pulling out the chain 21, and at the same time the soluble member 9 melts. By dropping, the lower end of the ventilation pipe 24 is opened, and the hollow portion of the upper portion of the container body 2 communicates with the outside by the ventilation pipe 24, so that the extinguishing chemical solution 4 is introduced into the opened stepped hole 6, specifically, the stepped portion 6 a. It can be made to flow naturally through the through-hole of the retainer 23 that has come into contact.

  FIG. 8 is an explanatory view of a sixth embodiment of the range hood fire extinguishing apparatus according to the present invention. In this sixth embodiment, the heat sensing plate in the thermal head 3 is provided on the upper part of the container body 2. It is characterized by.

In FIG. 8, a mounting base 27 having an outflow hole 2 6 a is fixed to the lower part of the container body 2 of the range hood fire extinguishing apparatus 1 by welding or the like. A sealing plate 28 sandwiched between packings 29 is closed and fixed by screwing into the outflow hole 26a of the nozzle 26.

  On the other hand, an attachment base 33 having attachment screw holes is fixed to the upper portion of the container body 2 facing the nozzle 26 by welding or the like, and a holder 34 is screwed and fixed to the attachment base 33. An operating shaft 30 is slidably incorporated in the holder 34 through an O-ring 35. The operating shaft 30 is a hollow shaft provided with a hollow hole 43, and a cutter 31 is formed by obliquely cutting the lower end, and a slit 32 is formed by cutting the outer peripheral portion following the cutter 31.

  A retaining ring 41 is fixed to the upper part of the slit 32, a flat washer 42 is provided on the upper part thereof, and a coil spring 40 is incorporated between the flat washer 42 and the holder 34. A heat sensing plate 36 is disposed at the tip of the working shaft 30 taken out from the holder 34, and the heat sensing plate 36 is fixed to the upper end of the working shaft 30 by a fusible member 37.

  A coil spring 38 is incorporated between the heat sensing plate 36 and the holder 34 to press the heat sensing plate 36 upward. The heat sensing plate 36 is connected to the container body 2 by a chain 39 to prevent it from falling off. Further, an air introduction hole 44 is opened at a position below the O-ring 35 in the holder 34 of the operating shaft 30.

  The coil spring 38 functions as a first spring member that biases the heat sensing plate 36 in the disassembly direction, and the coil spring 40 functions as a second spring member that biases the operating shaft 30 toward the sealing plate 28.

  FIG. 9 is an explanatory diagram of an operating state of the range hood fire extinguishing apparatus of FIG. 8 due to a tempura fire.

In the attached state of the range hood fire extinguisher 1 of FIG. 8, the heat sensing plate 36 arranged on the upper part of the container body 2 is heated by receiving flame and heat due to a tempura fire, and the fusible member 37 has a predetermined melting temperature. The heat sensing plate 36 is scattered by the spring force of the coil spring 38, and the hollow hole 43 is opened to the outside air. At the same time, the support of the upper end of the operating shaft 30 is released.

  Therefore, the operating shaft 30 is pushed downward by the force of the coil spring 40 as shown in FIG. 9, and the cutter 31 formed at the tip breaks through the sealing plate 28 of the nozzle 26. For this reason, a hole is opened in the sealing plate 28, and the extinguishant liquid 4 in the container body 2 flows out from the portion of the cutter 31 at the tip through the slit 32 of the operating shaft 30 by natural flow.

At this time, the air introduction hole 44 formed in the operating shaft 30 is located in the upper cavity of the fire extinguishing chemical liquid 4 in the container body 2 and introduces outside air to promote natural flow of the extinguishing chemical liquid 4. Further, the heat sensing plate 36 that has come off due to the melting of the fusible member 37 is suspended by the chain 39, so that it is prevented from jumping out to the surroundings.

  Here, in the sixth embodiment of FIG. 8, since the heat sensing plate 36 is provided on the upper portion of the container body 2, the heat sensing plate 36 is attached to the lower side of the container body 2 when attached to the range hood. The protrusion of the portion is suppressed, and it is possible to reliably prevent the instrument or the like from hitting the heat sensing plate 36 that protrudes downward and causing damage or malfunction.

  Further, when the heat sensing plate 36 is provided on the upper portion of the container body 2, the heat from the tempura fire hits the lower surface of the range hood so that the heat sensing plate 36 can be efficiently heated. It can be set to be equal to or more than that provided in the lower part of the.

  When the operating shaft 30 in FIG. 8 opens the sealing plate 28, the chain and the connecting rod as shown in FIG. 4 may drop toward the burner to extinguish the fire.

  FIG. 10 is an explanatory view of a seventh embodiment of the range hood fire extinguishing apparatus according to the present invention. In the seventh embodiment, an alarm switch for outputting an alarm signal is provided in the sixth embodiment of FIG. It is characterized by.

  In FIG. 10, the switch lever 46 of the alarm switch 45 using a micro switch is brought into contact with the heat sensing plate 36 in the thermal head 3 provided on the upper part of the container body 2, and the switch contact of the alarm switch 46 is set in this state. The switch lever 46 is pressed to turn it off. The other configuration is the same as that of the sixth embodiment in FIG.

  In the range hood fire extinguisher 1 provided with such an alarm switch 45, when the soluble member 37 is melted by the heat of the tempura fire and the heat sensing plate 36 is blown by the force of the coil spring 38, it is shown in FIG. As described above, when the switch lever 46 is released and the switch knob pops out, the switch contact of the alarm switch 45 is turned on, and an alarm signal can be output to the outside.

  FIG. 12 is an explanatory view of an eighth embodiment of the range hood fire extinguishing apparatus according to the present invention, and is an embodiment in which a heat sensing plate 36 is provided on the upper part of the container body 2 as in the sixth embodiment of FIG. .

  In FIG. 12, the thermal head 3 of the range hood fire extinguishing apparatus 1 has a nozzle 47 having an outflow hole 48 formed in the lower part of the container body 2 fixed by welding or the like, and a valve seat 55 is interposed inside the outflow hole 48. The operating shaft 50 is arranged.

  The operating shaft 50 is a hollow shaft provided with a hollow hole 52 and is slidably incorporated in a holder 34 screwed into a mounting base 33 fixed at a position facing the nozzle 47 of the container body 2. In this embodiment, the holder 34 is formed with a flange portion 37a having an annular groove in the upper portion, the heat sensing plate 36 is disposed in the upper portion in a state where the coil spring 51 is incorporated in the operating shaft 50, and the heat The sensing plate 36 is fixed to the flange portion 37 a by a soluble member 37.

  The operating shaft 50 forms an intake opening 56 on a side surface at a position immersed in the fire extinguishing liquid 4 in the container body 2. A retaining ring 53 is mounted in the middle of the operating shaft 50, and a coil spring 54 is incorporated between the retaining ring 53 and the inside of the nozzle 47.

  Here, the coil spring 51 functions as a third spring member that urges the heat sensing plate 36 fixed by the fusible member 37 in the disassembling direction, and the coil spring 54 urges the operating shaft 54 in the direction of opening the valve seat 55. It functions as a fourth spring member.

  Next, the operation by the tempura fire of the eighth embodiment of FIG. 12 will be described. When the fusible member 37 adhering the heat sensing member 36 is melted by receiving a flame or heat due to a tempura fire, the heat sensing member 36 is pushed out by the force of the coil spring 51 and disassembled as shown in FIG. The heat sensing plate 36 is suspended via 39.

  As the heat sensing plate 36 is disassembled and detached, the force applied to the operating shaft 50 by the coil spring 51 is released, the operating shaft 50 is pushed up by the coil spring 54, and the valve seat 55 moves away from the outflow hole 48 to open the flow path. For this reason, the fire extinguisher liquid 4 in the container body 2 is naturally dropped through the opened outflow hole 48 and can be gently poured into the tempura pan causing a fire to extinguish it.

  In the embodiment of FIG. 12 as well, as in the embodiment of FIG. 10, by providing the switch lever 46 of the alarm switch 45 on the heat sensing plate 36, an alarm signal can be output to the outside during operation due to a tempura fire. .

  Further, the thermal head shown in FIG. 8 is not limited to the arrangement directly above the container main body, and may be arranged somewhat obliquely above or to the side of the container main body, thereby further suppressing the height of the range hood fire extinguishing device.

Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

Explanatory drawing of 1st Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of the operating state of the range hood fire extinguisher of FIG. Explanatory drawing of the operating state at the time of use of the range hood fire extinguishing device of FIG. 1 and tempura fire Explanatory drawing of 2nd Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of 3rd Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of 4th Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of 5th Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of 6th Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of the operating state of the range hood apparatus of FIG. Explanatory drawing of 7th Embodiment of the range hood fire extinguishing apparatus by this invention Explanatory drawing of the operating state of the range hood fire extinguisher of FIG. Explanatory drawing of 8th Embodiment of the range hood fire extinguishing apparatus by this invention. Explanatory drawing of the operating state of the range hood fire extinguisher of FIG.

Explanation of symbols

1: Range hood fire extinguishing device 2: Container body 3: Thermal head 4: Extinguishing chemicals 5, 26, 47: Nozzle 6: Stepped hole 6a: Stepped portion 7: Communication rod 7b: Eaves portion 8, 26a, 48: Outflow hole 9, 37: Soluble member 10, 44: Air introduction hole 11: Sealing member 12, 38, 40, 51, 54: Coil spring 13: Spring receiver 14, 45: Alarm switch 15: Range hood 16: Gas range 17: Burner 18: Tempura pan 21, 39: Chain 22: Chain storage part 23: Retainer 24: Ventilation pipe 25: Weight member 27, 33: Mounting base 28: Sealing plate 29: Packing 30, 50: Actuating shaft 31: Cutter 32 : Slit 34: Holder 35: O-ring 36: Heat sensing plate 41, 53: Retaining ring 42: Flat washer 43, 52: Hollow shaft 45: Alarm switch 46: Switch lever 55: Valve Over preparative 56: intake opening

Claims (5)

A fire extinguisher liquid stored in a non-pressurized state with a fire extinguishing chemical attached to the position of the range hood opposite to the burner of the gas range, and the fire extinguishing chemical liquid attached to the container main body and operating when heated to a predetermined temperature In a range hood fire extinguisher equipped with a thermal head that naturally flows down,
The thermal head is
A nozzle attached to the bottom of the container body and provided with an open hole;
A chain housed in the container body;
A fusible member for closing the opening hole of the nozzle;
A vent pipe provided in the nozzle, closed at the lower end with the fusible member and opened at the upper end in the container body;
The provided, upon melting said meltable member, wherein the aperture hole opens the Rutotomoni the chain communicated to the container body to the outside air by the ventilation pipe is dropped from the opening hole, the extinguishing along the chain A range hood fire extinguishing device, which allows chemicals to flow down naturally.
A fire extinguisher liquid stored in a non-pressurized state with a fire extinguishing chemical attached to the position of the range hood opposite to the burner of the gas range, and the fire extinguishing chemical liquid attached to the container main body and operating when heated to a predetermined temperature In a range hood fire extinguisher equipped with a thermal head that naturally flows down,
The thermal head is
A nozzle attached to the bottom of the container body and provided with an open hole;
A connecting rod connected to a chain housed in the container body;
A weight member that is placed on the communication rod and applies a load for pushing down the communication rod;
A fusible member for closing the opening hole of the nozzle;
A vent pipe provided in the nozzle, closed at the lower end with the fusible member and opened at the upper end in the container body;
The provided, when the meltable member is melted, the said opening hole the communication bar leaving the weight member to Rutotomoni the open hole communicates with the container body to the outside air by the opening to the vent pipe of the chain A range hood fire extinguishing apparatus, wherein the fire extinguishing liquid is allowed to fall along with the chain and the fire extinguishing liquid is allowed to flow down naturally.
A fire extinguisher liquid stored in a non-pressurized state with a fire extinguishing chemical attached to the position of the range hood opposite to the burner of the gas range, and the fire extinguishing chemical liquid attached to the container main body and operating when heated to a predetermined temperature In a range hood fire extinguisher equipped with a thermal head that naturally flows down,
The thermal head is
A nozzle attached to the bottom of the container body and having an opening hole closed with a sealing plate;
A holder member provided with a through hole disposed above the container body rather than the nozzle;
An operation shaft that is slidably inserted into the through hole of the holder member, forms a cutter that breaks the sealing plate of the nozzle at the lower end, and takes out the upper end through the holder member to the outside;
A fusible member that fixes a heat sensing plate to the upper end of the operating shaft and melts at a predetermined temperature;
A spring member for urging the operating shaft in the direction of the sealing plate of the head;
And when the fusible member is melted, the heat sensing plate is detached from the operating shaft, and at the same time, the operating shaft is driven downward by the force of the spring member, and the sealing plate is moved by the tip cutter portion. A range hood fire extinguishing apparatus, wherein the fire extinguishing liquid is allowed to flow down from the head by breaking.
A fire extinguisher liquid stored in a non-pressurized state with a fire extinguishing chemical attached to the position of the range hood opposite to the burner of the gas range, and the fire extinguishing chemical liquid attached to the container main body and operating when heated to a predetermined temperature In a range hood fire extinguisher equipped with a thermal head that naturally flows down,
The thermal head is
A nozzle mounted on the bottom of the container body and having an opening hole;
A holder member provided with a through hole disposed above the container body rather than the nozzle;
An operating shaft that is slidably inserted into the through hole of the holder member, and that is provided with a valve seat that closes the opening hole of the head at the lower end, and that communicates with the inside of the container that passes through the holder member and is taken out to the outside.
A fusible member that fixes a heat sensing plate to the upper end of the operating shaft and melts at a predetermined temperature;
A spring member that urges the operating shaft in a direction to open the valve seat;
When the fusible member is melted, the heat sensing plate is detached from the operating shaft, and at the same time, the operating shaft is driven upward by the force of the spring member to release the opening hole from being closed by the valve seat. Then, the range hood fire extinguishing apparatus is characterized in that a fire extinguishing liquid is allowed to flow down naturally from the head.
Claim 3 or 4 at the hood fire extinguishing apparatus, wherein the actuating shaft has a hollow bore, when the meltable member is melted, to communicate the container to the outside air through the hollow bore of the actuating shaft A range hood fire extinguisher characterized by that.

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