KR200245871Y1 - Automatic Fire Extinguisher for Gas Range - Google Patents

Abstract

The present invention relates to an automatic fire extinguishing device for a gas range, and in particular a discharge tube fixture (1) for fixing the discharge tube (2); A detention (3) welded to the fire extinguisher container (16); A tubular valve body (4) fixed to the detention in a state where various parts are internally connected and connected; A valve seat 5 which blocks the extinguishing agent discharge hole 44 of the valve body 4 with a strong pressure and opens it in case of fire; A return spring (17) for restoring the valve seat (5); A valve cover 6 detachably installed at an opening of the valve body 4; A glass bulb 7 having a structure in which a hydrocarbon or griffin with a high thermal expansion rate is filled in a glass tube, and installed between an upper surface of the valve seat 5 and a bottom surface of the valve cover 6; A heater 8 installed in a form in which an outer side of the glass bulb 7 is wound; A fire extinguisher operation detecting means 9 for allowing the control panel 14 to recognize an operating state of the fire extinguisher; Part of the free end of the connecting pipe (19) and the nozzle bar fixture (10) installed in the form of wrapping around the temperature sensor 13, the structure of the valve operation means itself of the fire extinguisher container is very simple, greatly reducing the production cost of the product Not only that, but the fire extinguisher will always work correctly over long periods of time, giving certainty as to fire evolution.

Description

Automatic Fire Extinguisher for Gas Range

The present invention relates to an automatic fire extinguishing device for a gas cooker. More specifically, the valve operation means of the fire extinguisher container is designed with a simpler structure to reduce the production cost of the product, as well as a fire in a long time after installation. Is designed to ensure that the fire extinguisher actuator is always working correctly to give certainty as to fire extinguishing.

Various automatic fire extinguishers for a conventional gas stove are already known, and in most automatic fire extinguishing devices, the valve operating means is mechanical using a cam, a lever and a fuse link, or an electric using a solenoid or a motor.

By the way, in the case of mechanical type, the cable or hinge connecting the cap and the lever acts as a frictional resistance, which causes a problem that often occurs when an actual fire occurs. In addition, the fuse which is used as a heat sensing means is continuously applied to a heat source. Since it is exposed, the molten metal ages or deteriorates over a long period of time, and thus there is a problem that it does not operate correctly when an actual fire occurs.

That is, despite the long-term use of the gas cooker, water vapor or dust generated from food is attached to the fire extinguisher operating means in the hood including each component in the connecting bar and solidified, so that the fire extinguishing agent is injected through the injection nozzle when a fire occurs. In order to operate the operating lever by relying on the cable of the fuse link, and the operating lever has to press the push pin of the plug firmly, the extinguishing agent is delivered through the conduit to the spray nozzle side and the extinguishing agent is sprayed from the upper part of the countertop by fire. Since the cable is kept in a bent state after a long time since installation, the operating lever often fails to operate smoothly. Fire when the elasticity of the I can not give birth strongly pressing the push pin, there is a problem such as failing to extinguish a fire at an early stage because the extinguishing agent in the extinguisher does not feed into the spray nozzle through the conduit.

In addition, many appliances remain exposed to the air in the hood, cabinet, and connecting bar, so the aesthetics around the hood are not beautiful, and in particular, water vapor, odor, and surrounding dust generated from foods may be different for each component. Because of the solidification, there is a problem such that it often interferes with the normal operation in the event of a fire, and thus often does not function as an automatic fire extinguishing device.

In addition, the solenoid control method of the electronic type has a problem in that the operation characteristic is severely changed according to the change in the power supply voltage, and the motor method has a problem in that it is difficult to precisely operate the shaft due to the rotation of the gear.

Such anxiety acts as a factor that lowers the stability of the automatic fire extinguishing system, thereby lowering the reliability of the product itself and increasing the possibility of fatal extinguishing failure in the event of a fire. Many of the components themselves act as a factor in raising the production cost of the product.

The present invention has been made to solve the above problems, it is possible to reduce the production cost of the product by designing a simple structure of the valve operation means itself of the fire extinguisher container, and the fire extinguisher operating device is always It is an object of the present invention to provide an automatic fire extinguishing device for a gas range that can be operated correctly to give certainty due to fire extinguishing.

The object of the present invention is installed on the upper part of the gas range, when the temperature of the gas range detected by the temperature sensor is detected to rise above the predetermined temperature when operating the gas circuit breaker through the control panel and at the same time generates an alarm sound In the automatic fire extinguishing device for extinguishing a fire by injecting a fire extinguishing agent filled in the fire extinguisher container through the operation of the fire extinguisher operation device, the fire extinguishing tube is fixed at the lower end to the inlet of the fire extinguisher container. A discharge tube fixture fitted; A detention unit which is welded to the inlet of the fire extinguisher container in a form surrounding the outside of the discharge tube fixture so that the valve body is detachably fixed; The bottom is formed with a coupling protrusion for bolt coupling to the discharge tube fixture and the detention, the upper side is formed with a coupling hole for coupling the charge valve, the pressure sensor and the pressure gauge, respectively, from the middle portion to the upper portion of the extinguishing agent discharge hole A valve seat receiving groove having a larger diameter is formed, and at one side of the bottom of the valve seat receiving groove, a connecting pipe fixing protrusion is formed in which the other end of the connecting pipe in which the injection nozzle is installed at one end is fixed through a cap nut. A tubular valve body having a heater coupling terminal formed at one side of the upper opening; O-ring inserting grooves are formed around the same piston as the outer circumferential surface of the inner peripheral surface of the receiving groove, and a rubber seal for sealing is applied to the blotting portion projecting in a conical shape from the bottom surface. A valve seat installed in the receiving groove of the valve body to block the extinguishing agent discharge hole with a strong pressure, and to open the extinguishing agent discharge hole when the glass bulb is damaged due to a fire; A return spring installed between the bottom surface of the valve groove and the bottom surface of the valve seat; A valve cover detachably installed on the valve body; The upper surface is fixed by the valve cover in a state where the thermal expansion rate is filled with hydrocarbon or griffin in a glass tube and is erected vertically from the upper surface of the valve seat, and the fixed pressure of the valve cover is transmitted to the valve seat. A glass bulb as a heat sensing means; It is wound around the outside of the glass bulb and fixedly installed on the coupling terminal of the valve body. When a predetermined output signal is generated from the control panel due to the occurrence of a fire, the volume of hydrocarbon or greserine in the glass bulb is generated by generating a certain amount of heat. A heater that greatly expands and breaks the glass tube; A fire extinguisher operation detecting means installed on an upper surface of the valve cover to maintain an "off" state and being "on" when the glass bulb is broken due to a fire so that the control panel recognizes an operation state of the fire extinguisher; The through holes are perforated so that heat is transferred to the upper and lower front parts by the temperature sensor, and the free nozzles of the connection pipes and the temperature sensors are installed to cover the spray nozzles of the connection pipes. It can achieve by making it a structure with an enclosure type nozzle bar fixture.

Therefore, since the valve operation means of the fire extinguisher container itself is very simple and does not come in contact with the outside air at all, it can reduce the production cost of the product and also ensure that the fire extinguisher always operates correctly even after a long period of time, thereby reducing the certainty of fire extinguishing. It can be.

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

1 is a perspective view of a gas range around the present invention device is installed.

Figure 2 is a front view of the vicinity of the gas cooker is installed device.

Figure 3 is an enlarged cross-sectional view of a part of the present device.

Figure 4 is a cross-sectional view showing an operating state of the device of the present invention.

Explanation of symbols on main parts of drawing

1: discharge tube fixture 2: discharge tube

3: detention 4: valve body

5: Valve seat 6: Valve cover

7: glass bulb 8: heater

9: fire extinguisher operation detection means 10: nozzle bar fixture

11 gas range 13 temperature sensor

14: control panel 15: gas circuit breaker

16: fire extinguisher container 17: return spring

18,53: O-ring 19: connector

20: injection nozzle 21: pressure sensor

22: charge valve 24: pressure gauge

1 is a perspective view of a gas range around the device is installed, Figure 2 is a front view of the gas range around the device is installed, Figure 3 is a partially enlarged cross-sectional view of the device of the present invention, Figure 5 Is a cross-sectional view showing the operating state of the device.

According to this, the gas circuit breaker 15 is operated through the control panel 14 when it is detected that the temperature of the gas range surrounding the gas range detected by the temperature sensor 13 is raised above the predetermined temperature by being installed at the upper portion of the gas range 11. In the construction of an automatic fire extinguishing system for extinguishing a fire by spraying a fire extinguishing agent filled in the fire extinguisher container 16 through the injection nozzle 20 through the operation of the fire extinguisher operating device, and at the same time generating an alarm sound.

A discharge tube fixture (1) fitted into the inlet of the fire extinguisher container (16) having a discharge tube (2) fixed at its lower end;

A detention (3) welded to the inlet of the fire extinguisher container (16) in a form surrounding the outside of the discharge tube fixture (1) to allow the valve body (4) to be detachably fixed;

A coupling protrusion 41 for bolting to the discharge tube fixture 1 and the detention 3 is formed at the bottom thereof, and an upper portion thereof is provided with a pressure relief valve 22 for filling nitrogen gas and a pressure in the extinguisher container. Coupling holes 42, 43 and 49 are respectively formed to couple the pressure sensor 21 which detects and informs the control panel 14 and the pressure gauge 24 which displays the pressure in the fire extinguisher container 16, A valve seat receiving groove 45 having a diameter larger than that of the extinguishing agent discharge hole 44 formed in the center line is formed from the middle part to the upper part, and one end of the valve seat receiving groove 45 has a spray nozzle at one end thereof. The other end of the connector 19 is installed 20 is provided with a connector fixing projection 46 is fixed to the cap through the nut 23, the one side of the upper opening is provided with a heater coupling terminal 47 A tubular valve body 4;

The O-ring 53 is installed in the insertion groove 52 formed around the piston 51 having the outer circumferential surface substantially the same as the inner circumferential surface diameter of the receiving groove 45, and the blotting portion 54 protruding conically in the bottom surface. ), A sealing rubber 55 is applied, and a middle portion of the upper surface thereof has a glass bulb settling groove 56 formed therein, which is installed in the receiving groove of the valve body 4 to normally discharge the extinguishing agent discharge hole 44. A valve seat 5 for opening the extinguishing agent discharge hole when the glass bulb 7 is broken due to a fire while being blocked by a strong pressure;

A return spring 17 installed between the bottom surface of the accommodation groove 45 of the valve body 4 and the bottom surface of the valve seat 5 to perform a return function;

On the outer circumferential surface is formed a screw thread 61 coupled with the spiral portion 48 formed in the upper opening of the valve body 4, and in the center thereof, an operating lever passage hole 62 of the fire extinguisher operation detecting means 9 and a glass bulb settle. A valve cover (6) having a configuration in which a groove (63) is formed and detachably installed on the valve body (4);

Glass as a heat-sensing means in which the upper surface is gripped by the valve cover 6 while having a structure in which hydrocarbons or griffins with a large thermal expansion rate are filled in the glass tube and standing vertically on the upper surface of the valve seat 5. Bulb 7;

It is fixed to the coupling terminal 47 of the valve body 4 in the state surrounding the outer side of the glass bulb 7 and generates a certain amount of heat when a predetermined output signal is generated from the control panel 14 due to the occurrence of a fire. A heater 8 which greatly expands the volume of hydrocarbons or greserine in the glass bulb 7 so that the glass tube is broken;

Fire extinguisher operation is installed on the upper surface of the valve cover (6) to maintain the "off" state normally, when the glass bulb (7) is broken due to the fire "on", so that the control panel 14 recognizes the operating state of the fire extinguisher Sensing means 9;

The through holes 101 are formed in the upper and lower front portions so as to transfer heat to the temperature sensor 13 well, and are installed in the form of surrounding the part of the free end of the connecting pipe 19 and the temperature sensor 13 and at the same time. The injection nozzle 20 of 19 is characterized by consisting of a rectangular box-type nozzle bar fixture 10 is installed so as to protrude to the outside through the bottom surface.

At this time, it is good to prevent the leakage of the extinguishing agent in the extinguisher container 16 by installing an O-ring 18 in the coupling portion of the detention 3 and the valve body 4.

Referring to the operation and effect of the device of the present invention configured as described above are as follows.

First, the detention part 3 is positioned at the inlet of the fire extinguisher container 16 having a predetermined volume, and then the welding device is integrated with the extinguisher container through the welding, and then the desired amount in the extinguisher container 16 through the detention 3 The fire extinguishing agent is injected, and the discharge tube 2 is coupled to the bottom of the discharge tube fixture 1 and then inserted into the extinguisher container 16 through the detention 3.

Further, the return spring 17 and the valve seat 5 having the predetermined shape are sequentially inserted into the valve seat receiving groove 45 formed upward from the middle of the valve body 4 having the tubular shape, and the valve body ( The glass bulb 7 is inserted into the glass bulb 7 through the heater 8 having a shape wound at the center of 4) and both ends thereof are fixed to the coupling terminal 47. After maintaining the upright position (7), when the valve cover 6 is coupled to the upper opening of the valve body 4 by bolting, the coupling force of the valve cover 6 is transmitted through the glass bulb 7. Since the valve seat 5 is transmitted to the valve seat 5, the valve seat 5 keeps the extinguishing agent discharge hole 44 of the valve body 4 blocked while the return spring 17 is compressed.

Subsequently, the fire extinguisher operation detecting means 9 is fixedly installed on the upper surface of the valve cover 6 to detect whether the fire extinguisher is operated and to inform the control panel 14.

As described above, in order to couple the valve body 4 having completed the coupling of each component to the fire extinguisher container 16, the O-ring 18 is moved outward of the coupling protrusion 41 protruding to the bottom of the valve body 4. When the coupling protrusion 41 is coupled to the spiral portion formed on the inner circumferential surface of the detention 3, the gap is not generated at all and maintains a close contact with each other.

That is, when the valve body 4 of each component is coupled to the detention 3 of the fire extinguisher container 16, the fire extinguishing container set required by the automatic fire extinguishing device of the gas range is completed.

Thereafter, the pressure sensor 21 is coupled to the coupling hole 42 formed at one side of the bottom of the valve body 4, and the charge pressure valve 22 and the coupling holes 43 and 49 formed at the other side and the front part are respectively. After the pressure gauge 24 is coupled, nitrogen gas may be injected through the filling valve 22 while watching the pressure gauge 24 so that the pressure in the fire extinguisher container 16 is maintained at a predetermined pressure or more.

At this time, since the upper portion of the extinguishing agent discharge hole 44 of the valve body 4 is kept blocked by the valve seat 5, the nitrogen gas injected through the filling valve 22 is introduced into the extinguisher container 16. Only inflow.

That is, the valve seat 5 has an outer circumferential surface substantially the same as the inner circumferential surface diameter of the accommodating groove 45, and includes the same piston portion 51 and a conical holding portion 54, and on the outer surface of the piston portion 51. Since the O-ring 53 is installed in the formed insertion groove 52, the airtightness between the inner circumferential surface of the receiving groove 45 of the valve body 4 and the outer circumferential surface of the piston portion 51 of the valve seat 5 is maintained in the O-ring 53. And the rubber 55 is coated on the outer surface of the conical holding part 54, so that the circumferential surface of the extinguishing agent discharge hole 44 of the valve body 4 and the holding part 54 of the valve seat 5 are held. Since the airtight between the two is maintained by the rubber 55, the extinguishing agent discharge hole of the valve body (4) as long as the glass bulb (7) is not broken while the valve cover (6) is fastened to a predetermined pressure ( 44) The upper part maintains the closed state blocked by the valve seat 5 so that all the nitrogen gas injected through the pressure relief valve 22 is in the fire extinguisher container 16. It will flow into.

Of course, after filling the desired amount of extinguishing agent and nitrogen gas in the fire extinguisher container 16 and removing the nitrogen gas container, the pressure reducing valve 22 coupled to the coupling hole 43 serves as a check valve, so the fire extinguisher container It is possible to prevent the automatic leakage of the extinguishing agent and nitrogen gas filled in the inside.

In addition, a rectangular box-type nozzle bar fixing bar in which through holes 101 are perforated so that heat is transmitted to the upper and lower front portions of the connection pipe 19 having the spray nozzle 20 at one end thereof, and the temperature sensor 13 is transmitted to the upper and lower front portions thereof. 10) and at the same time to install the temperature sensor 13 in the position of the through hole 101 in the nozzle bar fixing bar 10 to form a set.

On the other hand, when installing the fire extinguisher container 16, the assembly of the valve operation device is completed as described above, after installing in the space formed in the upper portion of the hood of the gas stove or the display case, the valve seat receiving groove of the valve body (4) The other end of the connection pipe 19 is fixed to the connection pipe fixing protrusion 46 formed at one side of the 45 through a cap nut 23, and the injection nozzle 20 of the connection pipe 19 is a gas range. (11) in the upper center.

Subsequently, the pressure sensor 21 installed in the valve body 4 and the temperature sensor 13 installed in the nozzle bar fixture 10 are connected to the control panel 14 which performs the overall control function of the device of the present invention, and the micro Fire extinguisher operation detection means (9) consisting of a switch or a proximity switch is also connected to the control panel (14).

In addition, the control panel 14 includes a gas leakage detector 12, a gas circuit breaker 15, an alarm, and the like, and connects it with a communication network to notify a gas corporation, a fire department, or a user when a fire occurs, thereby installing the device of the present invention. Construction is completed.

In this way, the device of the present invention is a component for controlling the discharge of the extinguishing agent, that is, the valve seat (5), the glass bulb (7) and the heater (8) is inserted into the valve body (4) and exists in a sealed state so that the external air or It can be completely blocked from smoke and prevent the occurrence of deformation or oxidation, so that the device can be operated correctly even after a long time after the device is installed.

On the other hand, as a result of continuously detecting the temperature around the gas range through the temperature sensor 13 installed above the gas range 11 in the control panel 14, although a fire does not occur, a predetermined temperature or more likely to be detected. When the gas circuit breaker 15 is driven to prevent gas from being supplied to the gas range, the ambient temperature of the gas range is increased due to a fire, even though the gas supply is interrupted through the gas circuit breaker 15 as described above. When the temperature rises above a predetermined temperature, the driving voltage is output to the heater 8.

Therefore, since the heater 8 performs the heating operation, the hydrocarbon or grillelin in the glass bulb 7 undergoes thermal expansion, and when the volume thereof expands greatly, the glass tube surrounding the outside ruptures. Press pressure is lost.

Therefore, the valve seat 5 which is blocking the extinguishing agent discharge hole 44 of the valve body 4 is also supported by the restoring force of the return spring 17 which acts together with the expansion pressure of nitrogen gas in the extinguisher container 16. 4, the extinguishing agent in the extinguisher container is discharged to the extinguishing agent discharge hole 44 of the valve body 4 → the valve seat receiving groove 45 → the connecting pipe fixing protrusion 46 → the connecting pipe 19 → injection Since it is injected into the upper portion of the gas range 11 through the nozzle 20 it is possible to automatically extinguish the fire generated in the gas range.

In addition, when the glass bulb 7 is ruptured, since the fire extinguisher operation detecting means 9 that is normally pressed by the glass bulb 7 and kept in the "off" state is "on", the control panel 14 recognizes this. Not only can it generate an alarm, but it can also notify the gas corporation, the fire department or the user through the communication network.

Of course, the control panel 14 shuts off the power supplied to the heater 8 after the fire extinguisher operation detecting means 9 is "on" and recognizes that the fire extinguisher is operated.

In addition, an O-ring 18 is provided at the engaging portion of the detention 3 and the valve body 4, and the upper portion of the valve body 4 is kept closed by the valve cover 6, so that a fire extinguisher container ( 16) It is possible to prevent the extinguishing agent from leaking to the outside, as well as to maintain complete airtightness of the valve itself, thus completely preventing deformation and oxidation of parts due to smoke, etc. Can be either.

As described above, according to the present invention, since the valve operation means itself of the fire extinguisher container has a very simple structure and the contact with the outside air is completely blocked, the production cost of the product can be greatly reduced as well as a long time after installation. Fire extinguishers will always function correctly even if they pass, giving certainty for fire extinguishing, and especially improving the reliability of the product itself.

Claims (5)

When installed in the upper portion of the gas range 11 and detected that the temperature around the gas range detected by the temperature sensor 13 has risen above a predetermined temperature, the gas circuit breaker 15 is operated through the control panel 14 and an alarm sound is generated. In the construction of an automatic fire extinguishing device for extinguishing a fire by spraying the extinguishing agent filled in the fire extinguisher container 16 through the injection nozzle 20 through the operation of the fire extinguisher operating device at the same time, A discharge tube fixture (1) fitted into the inlet of the fire extinguisher container (16) having a discharge tube (2) fixed to a lower end; A detention (3) welded to the inlet of the fire extinguisher container (16) in a form surrounding the outside of the discharge tube fixture (1) to allow the valve body (4) to be detachably fixed; A coupling protrusion 41 for bolting to the discharge tube fixture 1 and the detention 3 is formed at the bottom thereof, and an upper portion thereof is provided with a pressure relief valve 22 for filling nitrogen gas and a pressure in the extinguisher container. Coupling holes 42, 43 and 49 are respectively formed to couple the pressure sensor 21 which detects and informs the control panel 14 and the pressure gauge 24 which displays the pressure in the fire extinguisher container 16, A valve seat receiving groove 45 having a diameter larger than that of the extinguishing agent discharge hole 44 formed in the center line is formed from the middle part to the upper part, and one end of the valve seat receiving groove 45 has a spray nozzle at one end thereof. The other end of the connector (19) 20 is installed is a connector fixing protrusion 46 is fixed to the cap through the nut 23 is installed, the heater coupling terminal 47 is installed on one side of the upper opening A tubular valve body 4; The valve seat is installed in the receiving groove of the valve body 4 to block the extinguishing agent discharge hole 44 under a high pressure, and to open the extinguishing agent discharge hole when the glass bulb 7 is damaged due to a fire ( 5) and; On the outer circumferential surface is formed a thread 61 coupled with the spiral portion 48 formed in the upper opening of the valve body 4, and in the center thereof, an operating lever through hole 62 of the fire extinguisher operation detecting means 9 and a glass bulb settle. A valve cover (6) having a configuration in which a groove (63) is formed and detachably installed on the valve body (4); Glass as a heat-sensing means in which the upper surface is gripped by the valve cover 6 while having a structure in which hydrocarbons or griffins with a large thermal expansion rate are filled in the glass tube and standing vertically on the upper surface of the valve seat 5. Bulb 7; In the state surrounding the outside of the glass bulb (7) is fixed to the coupling terminal 47 of the valve body (4) when a predetermined output signal is generated from the control panel 14 due to the occurrence of a fire generates heat by a certain amount of heat A heater 8 which greatly expands the volume of hydrocarbons or glycerin in the glass bulb 7 so that the glass tube is broken; An actuating lever is installed in the actuating lever through-hole 62 formed on the upper surface of the valve cover 6, and a switch of the lower end of the actuating lever is installed to be pressed by the upper end of the glass bulb 7. When the glass bulb 7 is broken due to a fire, the fire extinguisher operation detecting means 9 is “on” by removing the force of pressing the switch of the lower end of the operation lever so that the control panel 14 recognizes the operation state of the fire extinguisher. )and; The through holes 101 are formed in the upper and lower front portions so as to transfer heat to the temperature sensor 13 well, and are installed in the form of surrounding the part of the free end of the connecting pipe 19 and the temperature sensor 13 and at the same time. 19, the injection nozzle is a gas stove automatic fire extinguishing device, characterized in that consisting of a rectangular nozzle bar fixture (10) is installed to protrude to the outside through the bottom. The method according to claim 1, wherein the valve seat (5) has an outer circumferential surface substantially the same as the inner circumferential surface diameter of the receiving groove 45 of the valve body 4 to form an insertion groove 52 around the same piston portion 51 O ring (53) is installed, the pressure-sensitive portion 54 protrudingly formed to have a conical shape at the bottom surface is coated with a sealing rubber (55), the glass bulb settled groove 56 is formed in the middle of the upper surface Automatic fire extinguisher for gas range. The automatic fire extinguishing device according to claim 1, further comprising a return spring (17) between the bottom of the receiving groove (45) of the valve body (4) and the bottom of the valve seat (5). The automatic fire extinguishing device according to claim 1, wherein the fire extinguisher operation detecting means (9) is a micro switch. The automatic fire extinguishing device according to claim 1, characterized in that the fire extinguisher operation detecting means (9) is a proximity switch.