KR200486289Y1 - A malfunction prevention system for automatic fire extinguisher - Google Patents

Abstract

More particularly, the present invention relates to a kitchen automatic fire extinguishing system including a fire extinguisher, a gas or electric breaker, a control unit, and a heat sensing device, cap; A lower body inserted into the coupling cap and having a stepped portion that is narrowed toward the outside, a pinhole extending from the central portion to the upper portion, and a circular insertion groove formed at the lower portion; A bimetal disc inserted in the insertion groove and inverted into a cup shape and a cap shape according to a change in temperature; An opening / closing pin inserted into the pinhole and placed on the disc bimetal; A fixed ground fixed to an upper portion of the lower body; A cap-shaped upper body having a ceiling portion and a peripheral portion and having a step formed at a lower portion of the peripheral portion to be coupled to the lower body; And a movable ground fixed to one side of the upper part of the upper body, wherein currents of the fixed ground and the movable ground connected to the control unit are opened and closed by reversing the original bimetal, so that the fire extinguisher is injected. do.

Description

[0001] The present invention relates to a malfunction prevention system for automatic fire extinguisher,

The present invention relates to a malfunction prevention system for a kitchen automatic fire extinguishing system, and more particularly, to a malfunction prevention system for a kitchen automatic fire extinguishing system for preventing a fire extinguisher from being released due to a malfunction of a heat sensing sensor and a control unit.

Generally, a fire extinguisher is a fire extinguishing device for releasing fire extinguishing agent when a fire occurs, and as shown in FIG. 1, a fire extinguishing device for a fire extinguishing device for residential or commercial building using electricity or gas A fire extinguisher is installed on the upper part of the heat source in order to prevent the property and personal injury caused by the fire in case of fire due to use, and a control part for controlling the operation of the fire extinguisher, A heat detecting device 700 for detecting heat in case of fire, and an operating part 400 for displaying the state of the circuit breaker and the kitchen automatic fire extinguishing device and for performing manual operation. In case of using gas Which includes a separate gas detection device.

When a fire occurs, the fire detector is used to detect a fire, the control unit automatically closes the gas valve or the electric breaker to prevent the fire from diffusing, and the fire extinguisher is discharged to the cooking fire in the kitchen in the kitchen to suppress the fire .

The heat sensing device 700 senses the temperature of the heat generated by the fire and sends the sensed temperature to the control unit. The control unit compares the temperature measured by the heat sensing device with the preset temperature, If it is determined that a fire has occurred, the control unit sends a signal to the display device to notify the occurrence of a fire due to lamp blinking, a warning sound, etc., and operates a gas breaker or an electric breaker, It cuts off the electricity, controls the fire extinguisher, and extinguishes the fire by spraying the fire extinguisher.

In the case of an automatic fire extinguishing system using a gas, a gas leakage detector is separately provided. When the control device receives a gas leakage detection signal from the gas leakage detection device, it is determined that the gas leakage is caused, To shut off the gas supply. The automatic fire extinguishing apparatus for a kitchen may have a separate display and a manual operation unit, and a display unit and a manual operation unit may be installed in the control unit.

Such a conventional automatic fire extinguishing system is configured to detect a high temperature generated from a fire by using a heat sensor, to detect a fire using a control unit, to block a heat source, and to spray a fire extinguishing liquid to a heat source. However, Even though it is not a fire due to various errors, it is recognized that it is recognized as a fire, and the people who cook the food and the accident that is discharged to the food occur frequently. Also, due to the error of the heat sensor and the control unit, Occasionally, people accidentally avoided installing kitchen automatic fire extinguishers.

The causes of the errors of the thermal sensor and the control unit include various electrical noise introduced from the outside or generated internally such as pulse wave, high frequency, pop noise, flicker noise, pink noise, electric trouble, thermal noise Malfunction of a fire extinguisher due to various electromagnetic waves emitted from a fire, noise, short-range noise, radio wave, etc., and components used in a fire extinguisher operating circuit change over time due to changes in the time constant of resistors or capacitors, The cause of the malfunction of the automatic fire extinguishing system is not clarified precisely.

In order to solve the above problems, Korean Utility Model No. 20-1998- 056069 discloses a fire extinguisher having a fire extinguisher cap which is loosely covered with a low-temperature fusing lead to seal the periphery of the cap, A malfunction preventing device for an automatic fire extinguishing apparatus which prevents the fire extinguishing agent from being released due to clogging of the cap has been devised. Although the above technique temporarily stops the discharge of the digestive juice using the stopper at the discharge port of the digestive apparatus, the gas or electricity is already cut off due to the malfunction of the control unit. When the warning is generated, the discharge pipe of the digestive apparatus is filled with the digestive juice, It is difficult to reuse the heat sensing sensor and the control unit. Therefore, in the apparatus for preventing malfunction of the automatic fire extinguishing apparatus disclosed in the applicant's patent 10-1224892, A bimetal wire bent in a certain direction according to the external temperature is connected to a lid of a metal container through which the electricity passes and a metal container and another electrode are connected to each other. In case of fire, the bimetal wire is bent, Only the digestive juice is injected.

However, the malfunction prevention device has a problem that when the fire occurs, the metal container is sealed so that the temperature change inside the metal container is delayed so that the fire extinguishing liquid is not sprayed at an appropriate time. There is a problem in that a thin bimetal wire is exposed to water vapor generated in the cooking tool and is easily peeled off and becomes inoperable and it is impossible to confirm whether the malfunction prevention device is operated or not .

Korea public utility model 20-1998-056069 Korean Patent No. 10-1224892

In order to solve the above-mentioned problem, the present invention basically blocks the problem of releasing the digestive liquid even though the fire has not occurred due to various causes of the control unit and the heat sensing sensor, The present invention also provides a system for preventing the malfunction of the automatic fire extinguisher in the kitchen, which is reliable even with long-term external environmental influence and does not generate additional AS.

A malfunction prevention system for a kitchen automatic fire extinguishing system according to the present invention is a kitchen automatic fire extinguishing system including a fire extinguisher, a gas or an electric circuit breaker, a control unit, and a heat sensing device, and includes a bottom portion 813 and a cup- (810); A pinhole 825 inserted into the coupling cap 810 and having a stepped portion 820a narrowed to the outside and passing through the central portion of the coupling cap 810 and having a circular insertion groove formed at a lower portion thereof, 820); A disc bimetal 830 inserted into the insertion groove and inverted into a cup shape and a cap shape according to a change in temperature; An opening / closing pin 840 inserted into the pinhole 825 and placed on the disc bimetal 830; A fixed ground 860 fixed to the upper portion of the lower body 820; A cap-shaped upper body 850 having a ceiling portion 853 and a peripheral portion 855 and formed with a step 850a at a lower portion of the peripheral portion to be coupled with the lower body 820; And a movable ground (870) fixed to one side of the peripheral portion of the upper body,

The current of the fixed ground 860 and the movable ground 870 connected to the controller 300 is opened and closed by reversing the disc bimetal 830 so that the fire extinguisher is sprayed.

The malfunction prevention system of the kitchen automatic fire extinguishing system of the present invention mechanically blocks the errors caused by various causes of the heat sensing sensor and the control unit, thereby effectively preventing the user's damage by preventing the discharge of the digestive fluid due to the error of the control system , The malfunction prevention device reacts quickly in the event of a fire, has high reliability even after a long period of external environmental impact, and is automatically restored even after a fire is generated and the fire extinguisher is sprayed. Thus, no separate AS is required, It is possible to prevent malfunction due to a mechanical error.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional automatic fire extinguisher for kitchen. FIG.
2 is a block diagram of a malfunction prevention system for an automatic fire extinguisher in a kitchen according to an embodiment of the present invention;
3 is an exploded view of a malfunction prevention apparatus according to an embodiment of the present invention;
4 is an explanatory view of the operation of the malfunction prevention device of the present invention.
5 is a view showing a connection of the malfunction prevention device and the ground connection member.

Hereinafter, an automatic fire extinguishing system malfunction prevention system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of a conventional automatic fire extinguishing system for a kitchen, FIG. 2 is a configuration diagram of a malfunction prevention system for an automatic fire extinguishing system for a kitchen according to an embodiment of the present invention, FIG. 4 is an explanatory view of the operation of the malfunction prevention device of the present invention. FIG.

1 is a general automatic fire extinguishing system of a kitchen using a gas shown in FIG. 1 as a heat source. In recent years, kitchens using only electricity such as an electric range, a hot plate, and an induction have been increasing. Gas detectors are omitted for automatic kitchen fire extinguishing systems that use only electricity.

The conventional automatic fire extinguishing system is configured to detect a high temperature generated from a fire by using a heat sensor, determine a fire by using a control unit to shut off a heat source, and spray the extinguishing liquid to a heat source. However, , There are frequent occurrences of accidents that occur in people who cook food and food, which is recognized as a fire even though it is not a fire due to various errors of the heat sensor and control unit. However, since the cause of the malfunction of the automatic fire extinguishing device is not accurately known, in the present invention, a malfunction preventing device 800 is introduced separately from the heat detecting sensor, and the fire is detected by using the heat detecting sensor An operation to prevent fire by using the control unit and the operation unit is performed, but the operation of spraying the fire extinguishing liquid Not obvious when there is a fire only by the signals of the malfunction preventing device 800 which only works in the extinguishing liquid jet to occur, and was configured to block the extinguishing medium ejection accidents due to an error of the thermal sensing device 700 and the controller 300.

The malfunction prevention device 800 according to the present invention is constructed in such a manner that a cup-shaped coupling cap 810 which is not rusted by aluminum or the like is placed under the coupling cap 810 and a lower body 820 and an upper body 850 are inserted and fixed.

The coupling cap 810 has a cylindrical shape with a bottom 813 and a rim 815. The lower body 820 and the upper body 850 are inserted and then the upper portion of the rim 815 is bent inward, (820).

The lower body 820 is formed with a circular insertion groove at the lower portion thereof and a pinhole 825 penetrating from the central portion of the insertion groove to the upper portion thereof is formed and a lower end portion 820 of the lower body 820, A jaw portion 820a is provided.

In the insertion groove of the lower body 820, a cup bimetal 830 is inserted which inverts into a cup shape and a cap shape according to the temperature change. The disc bimetal is formed by combining two layers of metals having different thermal conductivities. The bimetal is in the form of a cap at room temperature, and is inverted into a cup shape when the temperature exceeds a predetermined temperature.

The disc bimetal is in contact with the coupling cap 810 formed of a metal such as aluminum, so that the disc bimetal can quickly react to the external temperature.

However, it is preferable that the moisture generated from the cooking utensil used in the kitchen is infiltrated into the insertion groove in which the bimetal is inserted, so that the upper and lower bodies are bonded to each other in order to prevent the characteristics of the bimetal from changing, .

A pin 840 is inserted into the pin hole 825 to be placed on the upper part of the original bimetal 830 and a fixed ground is fixed to the periphery of the opening and closing pin 840 at one side of the upper part of the lower body 820.

A stepped portion 850a is formed on the lower outer side of the peripheral portion and a ceiling portion 853 and a peripheral portion 855 are formed on the upper portion of the lower body 820. The movable body 870 is fixed to one side of the peripheral portion, 850).

The movable ground 870 is connected to an arm made of an elastic metal and placed on an upper portion of the opening and closing pin 840 to form a disconnection state when the disc bimetal 830 is capped, When the fixed ground 860 and the movable ground 870 are brought into contact with each other, the opening / closing pin 840 is lowered to come into contact with the fixed ground 860 to be in the energized state. In this embodiment, But in some cases it can be operated in the opposite way.

A stepped portion 820a is formed on the outer side of the lower body 820 and a step 850a is formed in the lower portion of the peripheral portion of the upper body 850 to enlarge the diameter of the upper body 850, The lower body 820 and the lower body 820 are inserted into the coupling cap 810 and the rim 815 of the coupling cap 810 is bent inwardly so that the lower body 820 and the upper body 850 are fixed .

A resistor 970 of high resistance is connected between the fixed ground 860 and the movable ground 870 so as to allow the fine current to flow through the controller 300 to prevent malfunction It is possible to check whether or not the prevention device 800 is disconnected. A pair of plugs 880 for connecting the fixed ground 860 and the movable ground 870 of the malfunction prevention device 800 are installed through the peripheral portion 855 of the upper body 850, The adapter 950 for inserting the plug 880 is formed on both sides of the insulator 930 and the operation of the malfunction prevention device is ensured if the ground connection member 900 connecting the resistor 970 to the adapter is further included And the connection of the malfunction prevention device 800 is simplified.

The malfunction prevention system of the kitchen automatic fire extinguishing apparatus configured as described above can fundamentally block the errors caused by various causes of the heat sensing device and the control unit to effectively prevent the damage of the user by preventing the discharge of the digestive fluid due to the error of the control system In addition, the malfunction prevention device responds quickly in case of fire, has high reliability even after a long period of external environmental impact, is automatically restored even after the fire is generated and the fire extinguisher is sprayed, There is an effect of increasing the reliability of the automatic fire extinguisher in the kitchen by monitoring the disconnection of the malfunction prevention device by itself.

100: Kitchen automatic fire extinguisher 200: Fire extinguisher
250: jetting port 300:
400: operating part 500: gas detector
600: breaker 700: thermal sensor
800: Malfunction prevention device 810: Coupling cap
813: Bottom 815: Border
820: Lower body 820a:
825: Pinhole 830: Original bimetal
840: opening and closing pin 860: fixed ground
870: movable ground 880: plug
850: upper body 850a:
853: ceiling portion 855: peripheral portion
900: ground connecting member 930: printed board
950; Adapter 970: Resistance

Claims (4)

1. A kitchen automatic fire extinguishing system including a fire extinguisher, a gas or electric circuit breaker, a control unit, and a heat sensing device,
A cup-shaped coupling cap 810 having a bottom portion 813 and a rim 315;
A pinhole 825 inserted into the coupling cap 810 and having a stepped portion 820a narrowed to the outside and passing through the central portion of the coupling cap 810 and having a circular insertion groove formed at a lower portion thereof, 820);
A disc bimetal 830 inserted into the insertion groove and inverted into a cup shape and a cap shape according to a change in temperature;
An opening / closing pin 840 inserted into the pinhole 825 and placed on the disc bimetal 830;
A fixed ground 860 fixed to the upper portion of the lower body 820;
A cap-shaped upper body 850 having a ceiling portion 853 and a peripheral portion 855 and formed with a step 850a at a lower portion of the peripheral portion to be coupled with the lower body 820; And
And a movable ground (870) fixed to one side of the peripheral portion of the upper body,
The electric current of the fixed ground 860 and the movable ground 870 connected to the control unit 300 is opened and closed by reversing the disc bimetal 830 to spray the extinguisher,
Further comprising a resistor (970) connected between the fixed ground (860) and the movable ground (870) to cause a micro current to flow through the resistor to check whether the malfunction prevention device is disconnected. Malfunction prevention system of fire extinguisher. delete The method according to claim 1,
A pair of plugs 880 installed on the upper body 850 to connect the fixed ground 860 and the movable ground 870; And
And a ground connecting member 900 including a printed board 930 formed with an adapter 950 on both sides and the resistor 970 connected between the adapters 950. The ground connecting member 900, Wherein the malfunction prevention device (800) is coupled in a detachable manner. 4. The method according to any one of claims 1 to 3, wherein
A stepped portion 820a is formed on the outer side of the lower body 820 and a step 850a is formed in the lower portion of the peripheral portion of the upper body 850 to enlarge the diameter, And the lower body 820 and the upper body 850 are fixed by bending the rim 315 of the coupling cap 810 into which the lower body 820 is inserted. .

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