KR100813077B1 - Heat responsive automatic actuator for aerosol fire extinguisher - Google Patents

Abstract

An automatic actuator for an aerosol fire extinguisher is provided to respond to a fire promptly, to actuate the aerosol fire extinguisher with high reliability and is able to be set up to be operated at various temperatures. An automatic actuator for an aerosol fire extinguisher includes a heat responsive glass bulb(110), a firing pin(130) and a support member(120). The glass bulb responds to the circumferential temperature, and is broken when the temperature goes up to more than a previously set up temperature. The firing pin is disposed inside a housing and includes an elastic member. When the glass bulb is broken, the support member releases the firing pin having elastic restoring force from a compressed position to move to a hitting position and such restoring force is converted into hitting force of hitting a percussion cap(140).

Description

Automatic operation device for aerosol fire extinguisher {HEAT RESPONSIVE AUTOMATIC ACTUATOR FOR AEROSOL FIRE EXTINGUISHER}

The present invention relates to an automatic operation device for an aerosol fire extinguisher, and more particularly, to a thermosensitive automatic operation device for an aerosol fire extinguisher for operating an aerosol fire extinguisher in response to heat generated when a fire occurs.

Aerosol fire extinguishers are very effective against oil and electric fires, which are fires where water cannot be used. For example, various electrical panels, art galleries, library, computer rooms, mobile communication facilities, expensive electronic equipment, ships, electronic equipment assembly plants, etc. It can be applied over a wide range. In particular, it is effective in extinguishing fires generated in enclosed places such as electric panels, mobile communication relay stations, and ship engines. The aerosol fire extinguisher can minimize the damage of the components by the extinguishing agent after extinguishing, and can be quickly responded to the fire in case of fire because it is installed alone without a separate pipe connection for injecting the extinguishing agent.

An aerosol fire extinguisher generally includes a fire extinguisher, a coolant, and an ignition device containing potassium oxide as an active ingredient in the fire extinguishing device. When an operating device is operated by an external operation signal or self-sensing, the extinguishing agent burns in the fire extinguishing device. Digestive components are produced. At this time, the extinguishing component passes through the cooling layer of the extinguisher with the gas pressure generated as the extinguishing component and is injected through the nozzle. When the fire extinguishing component is applied where extinguishing is required, potassium ions in the extinguishing component block oxygen radicals supplied to the fire and thus extinguish the fire.

The aerosol fire extinguisher may be provided with an automatic actuator for automatically operating the aerosol fire extinguisher in response to a fire. When a fire occurs, the automatic operation device operates by itself, and can extinguish a fire by operating a fire extinguisher without a separate confirmation by a user. As an operating device for automatically operating an aerosol fire extinguisher, a heat sensing wire or a fusible metal has been commonly used.

The heat detector uses gunpowder. When heat is applied to the heat detector above a certain temperature or the flame touches it, the heat detector fires or ignites and activates the fire extinguisher. However, in order for the fire extinguisher to operate due to the ignition or ignition of the heat sensing wire, a high temperature of 150 ° C. or more is generally required, and the required activation temperature is also large. Thus, the choice of operating temperature for operating the aerosol fire extinguisher is very limited and unreliable. In addition, the heat detection line has a disadvantage in that the life is shortened when directly received light.

The thermosensitive method using lead having a low melting point as a fusible metal has a disadvantage in that there is a possibility of malfunction due to poor reliability due to shrinkage and expansion of lead according to changes in ambient temperature, and a large variation in operating temperature. Moreover, lead is a metal that is harmful to the human body and is therefore disadvantageous in handling. As with the method using the thermal sensing line, the thermal method using low melting point lead also has a narrow operating temperature selection, and is prone to deterioration in the long term.

The present invention is to overcome the problems and limitations of the prior art automatic operation device of the aerosol fire extinguisher, to provide an automatic operation device of the aerosol fire extinguisher that can react immediately in the event of a fire and operate the aerosol fire extinguisher with high reliability. For the purpose of

The present invention also provides an automatic operation device for an aerosol fire extinguisher which can be set to operate at various temperatures and which can select an operating speed.

Another object of the present invention is to provide an automatic operation device of an aerosol fire extinguisher in which performance is not degraded by the external environment.

Still another object of the present invention is to provide an aerosol fire extinguisher that is excellent in long term storage and easy to maintain and manage.

According to the present invention, an aerosol fire extinguisher includes a extinguishing agent for generating a fire extinguishing component in a fire extinguisher case, and a coolant for cooling the generated extinguishing ingredient to a predetermined temperature. The aerosol fire extinguisher also includes an automatic actuator for operating the ignition in response to the fire, an ignition for igniting the extinguishing agent, and a nozzle for ejecting extinguishing components out of the fire extinguisher.

The automatic actuating device of the aerosol fire extinguisher according to the present invention includes a glass bulb activated or ruptured in response to ambient temperature, and includes a sunken to operate a primer in response to the ruptured glass bulb. Preferably the primer and the sink are housed in the same housing of the autonomous device. Preferably, the housing is arranged side by side with the glass bulb along the longitudinal axis of the automatic actuating device.

The automatic operation device includes a support member for supporting the glass bulb. The support member may also fix the sink in its compressed position and may include a fixing member for securing the sink separately from the support member.

The glass bulb of the automatic operation device has recently been in the spotlight for the temperature detection of a fire sprinkler, and when a predetermined external heat is received, the material inside the glass bulb expands and breaks. The glass bulb may be set at a temperature at which the glass bulb is broken, for example, according to the component and thickness of the glass constituting the glass bulb, the component and the filling amount of the material to be filled in the glass bulb. In addition, since the glass bulb reacts and ruptures accurately at a set temperature, it is possible to select a glass bulb that can be broken at a desired temperature with high reliability. Glass bulbs commercially available in the invention of the present invention is easy to 57 ℃, 68 ℃, 79 ℃, 93 ℃, 141 ℃, 162 ℃, 260 ℃ depending on the operating temperature, and also according to the detection rate of the general type, early reaction Brother. The automatic operation device of the present invention may include a glass bulb having a desired operating temperature and operating speed depending on the location or use of the manufacturer or user of the aerosol fire extinguisher.

The glass bulb is fixedly arranged between the autonomous body and the support member. The glass bulb supporting member includes a support pin and an elastic member, and supports the support pin by pressing the support pin toward the glass bulb by the elastic force of the elastic member. Preferably, the support member supports the glass bulb at the upper end of the glass bulb.

The support member may support the glass member and at the same time fix the sunken in a compressed state. Fixing the sinking is performed by a fixture located between the support pin and the sinking of the support member. The fastener preferably has a spherical shape. When the glass bulb ruptures in response to the fire, the support pin of the support member for supporting the glass bulb is separated from the support member by the elastic force of the elastic member of the support member. As the support pin is released from the support member, a fixture for fixing the sink is also released from the fixed position of the sink. In this way, the sinking is released from the compression state and, as will be described later, the advancement is made from the compression position to the price position by the elastic force.

In addition to the fasteners, the automatic actuating device may include fastening pins for securing the sink in the compressed position. If the fixing pin is mounted, the sinking is maintained in its compressed position even if the glass bulb is broken. The fastening pins extend out of the automatic actuator and can be removed after the user installs the fire extinguisher. Also, after installation of the fire extinguisher, for easy replacement of the glass bulb, a locking pin can be used to fix the sink in the compressed position.

The sinking of the automatic actuator is arranged to be able to move between the price position where the primer can be priced and the compression position that can supply the price energy within the housing of the automatic actuator. The price energy of the primer is provided by the elastic member of the sinking. The elastic member is located between the tip of the sink and the wall of the housing and is compressed by physical force so that the tip of the sink has energy that can strike the primer. Preferably, the elastic member is an elastic spring. The elastic spring preferably has a spring constant k of at least 5 kgf / mm, in order to provide sufficient energy to sink the primer.

The sink is provided with a recess in which the fixture can be received to be fixed in the compressed position by the fixture. The recess has a shape in which the fixture can be easily released when the support pin of the support member is separated from the support member. When the fixture is spherical, the recess is preferably dimpled, and the depth of the recess is preferably 1/4 or less of the diameter of the fixture.

The tip of the sink has a structure shaped to effectively transfer the impact (break) energy of the sink to the primer. According to a preferred embodiment of the present invention, the tip portion is a papillary shape protruding from the sinking body, and the radius of the teat portion thereof is preferably 0.9 to 1.5 mm.

As a primer of the automatic actuator, a sports or military bullet primer known in the art may be used. The primer is preferably arranged on the same line as the sink and more preferably arranged between the sink and the igniter to efficiently transfer energy for igniting the igniter. The impact energy of the sinking causes the primer to generate a relatively small flame, which activates the ignition agent in the aerosol generator. The aerosol generating agent burns by the relatively large flame generated by this ignition agent to generate the extinguishing aerosol.

The present invention may include a hybrid automatic operation device including a glass bulb type automatic operation device and an electric operation device. The electrical actuator includes an electrical actuator further provided with an operating power line and an electrical match corresponding thereto. The operating power line is wired or wirelessly connected to the aerosol fire extinguisher control panel, and when the operating power is supplied from the control panel to the electrical match via the operating power line, the electrical match ignites the igniter. In this way, by using a hybrid automatic operation device equipped with an electric operation device, a network configuration which is an advantage of the electric operation device is possible, and thus centralized operation control is possible. Further, the composite automatic operation device may operate the glass bulb type automatic operation device by operating the aerosol fire extinguisher with high reliability even if a fire occurs and the operation power line of the electric operation device is damaged.

The glass bulb type automatic operation device for the aerosol fire extinguisher of the present invention can suppress the fire early by operating the aerosol fire extinguisher accurately and quickly in the event of a fire.

The aerosol fire extinguisher equipped with an automatic operation device according to the present invention can be automatically extinguished even in a place where it is difficult to extinguish even with high reliability by automatically operating in a space requiring extinguishing without artificial manipulation.

In the glass bulb type automatic operation device of the present invention, a glass bulb having a predetermined operating temperature and a predetermined operating speed may be used, so that an aerosol fire extinguisher may be set to enable a desired operation in various environments. In addition, the operation setting of the aerosol fire extinguisher can be easily changed by replacing only the glass bulb of the automatic operation device.

Glass bulbs do not cause deterioration with time such as heat detector wire or low melting point lead and are kept for a long time and hardly malfunction even when exposed to changes in temperature and humidity. Easy to manage

In short, it is possible to provide an aerosol fire extinguisher capable of setting various operating temperatures and operating speeds together with the high operating reliability of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are illustrative and are not intended to limit the invention, and it will be appreciated by those skilled in the art that various changes are possible within the spirit of the invention.

1 is a cross-sectional view of an aerosol fire extinguisher 1 having a glass bulb type automatic operation device 10 according to an embodiment of the present invention. The aerosol fire extinguisher 1 includes an ignition agent 210, an aerosol generator 220 and a coolant 230 in the aerosol generator 20 surrounded by the case. The automatic operation device 10 is fixed to the body of the fire extinguisher 1 by means of fixing means 150, which is preferably a bolt. When a fire occurs, the automatic operation device 10 is operated by the generated heat to ignite the ignition agent 210 connected to the automatic operation device 10. The flame generated by the ignition of the ignition agent burns the aerosol generator 220 which is preferably solid. As the aerosol generating agent burns, a high temperature extinguishing component (digestion aerosol) is generated, and the extinguishing component generated at the generated gas pressure, such as the extinguishing component, passes through the coolant 230 and then opens the nozzle 30 provided at the end of the extinguisher. Is sprayed out through the fire extinguisher. Preferably, the extinguishing component containing potassium ions as an active ingredient is applied to the fire to block oxygen supplied to the fire and thus extinguish the fire.

2 is an enlarged view of the glass bulb type automatic operation device 10 shown in FIG. 1. Referring to Figure 2 describes the structure and operating mechanism of the glass bulb type automatic operation device 10 according to a preferred embodiment of the present invention.

As shown in FIG. 2, the glass bulb type automatic operation device 10 of the present invention generally includes a glass bulb 110, a support member 120, a sink 130, and a primer 140. The heat generated by the fire is detected by the glass bulb 110, and when the temperature of the glass bulb 110 rises above the predetermined temperature by the heat or flame, the glass bulb 110 is ruptured. Although the glass bulb 110 is shown to be exposed to the outside in the drawing, it may include a cover member surrounding the glass bulb to protect the glass bulb 110 from external physical impact. The cover member may be formed of a material having good heat permeability, or may be formed of a porous sheet to facilitate thermal communication. In addition, the glass bulb 110 may be arranged to be accommodated in the housing of the automatic operation device (10).

The glass bulb 110 is disposed between the main body of the automatic operation device 10 and the support member 120. Specifically, one end 111 of the glass bulb 110 is fixedly supported by the body of the automatic operation device (10). Preferably, the body of the automatic operation device 10 is provided with an opening or groove for receiving one end 111 of the glass bulb. An elastic member (not shown) may be included between the opening or the recess and the one end 111 of the glass bulb to elastically support the glass bulb 110.

The other end 112 of the glass bulb is supported by the support member 120. The support member 120 elastically supports the other end 112 with respect to the glass bulb one end 111 is supported by the body of the automatic operation device. The support member includes a support pin 121 for supporting the glass bulb 110 and an elastic member 122 for pressing the support pin 121 toward the other end 112. Preferably, the support pin 121 is U-shaped, the elastic member 122 is provided in the U-shaped to press the support pin 121. An end of the elastic member 122 opposite to the support pin 121 is blocked by the body of the automatic operation device. Preferably, as shown, the elastic member 121 is a spring and is blocked by the tannery bolt 123.

When an internal material in the glass bulb expands due to a fire and the glass bulb 110 ruptures, the support pin 121 in the support member 120 supporting the glass bulb is supported by the elastic force of the elastic member 122. Departure or separation from The support member 120, in particular, the support pin 121 of the support member may support the glass bulb 110 and at the same time fix the sinking 130 in a compressed state. Therefore, as the support pin 121 is separated or separated from the support member 120, the sink 130 is released from the compressed state.

Optionally, as shown, the support member 120 may include a fixing member 124 positioned in the through hole between the support pin 121 and the sink 130. The fixing member 124 has one end thereof supported by the support pin 121 while the other end thereof fixes the sinking 130 in a compressed state. The fixing member 124 releases from the through hole when the support pin 121 is separated or separated from the supporting member 120 to release the fixation 130. Preferably, the fixing member 124 is a spherical fixture.

The sinking 130 is arranged to be movable back and forth or up and down between the position where the primer 140 can hit within the housing 101 of the automatic operation device 10 and the position away from the primer 140. 1 and 2, the sink 130 is preferably compressed by an elastic member 131, which is a spring, and fixed by the support member 120 in a compressed position away from the primer. When the support pin 121 or the fixing member 124 of the support member 120 is separated or separated from the support member 120, the sink 130 is released from the compressed state. As the compression of the sink 130 is released, the sink 130 quickly moves from the compressed position to the price position by the elastic force of the elastic member 131 to price the primer 140, and the elastic energy of the elastic member 131 Is converted into the impact energy of the sinking 130 hitting the primer 140 to operate the primer 140. At this time, the small flame generated from the primer activates the ignition agent 210 in the aerosol generator 20 of the aerosol fire extinguisher, and the large flame generated by the ignition agent 210 burns the aerosol generator 220.

 The elastic member 131 of the sink 130 should have a modulus of elasticity that can provide sufficient energy to the sink to operate the primer. However, if the elastic modulus of the elastic member is too large, it may be difficult to fix the sink in the compression position. According to the present invention, the elastic member preferably has an elastic modulus k of 5 to 8 kgf / mm.

The sink 130 transmits the impact energy due to the elastic force of the elastic member 131 to the primer 140 by the nipple portion 132 provided at the tip of the sink. The radius of the nipple portion 132 is preferably 0.9 to 1.5mm. If the radius of the teat portion is larger than this, the transfer of energy may be insufficient, and when the teat portion is small, the teat portion may malfunction through the primer 140. The sink 130 is engaged with the support pin 121 or the fixing member 124 so that the sink 130 can be fixed in the compressed position by the support pin 121 or the fixing member 124 of the support member 120. A recess 133 is provided. This recess preferably has a corresponding dimple shape when the fixing member 124 is a spherical fastener, in which case the depth of the recess is 1/2 or less of the diameter of the fastener. In particular, when the depth of the concave portion is 1/4 or less of the diameter of the fixture, it can be easily separated from the fixing position when the support pin 121 is separated by the rupture of the glass bulb 110.

According to one embodiment of the invention, the automatic operation device 10 is composed of a housing portion 101 and the adapter portion 102, preferably the sinking 130 and the primer 140 is in the housing portion 101 Are accepted. In addition, the housing unit 101 is preferably arranged in parallel with the glass bulb 110 along the longitudinal axis of the automatic operation device. As shown in FIG. 2, the housing portion 101 and the adapter portion 102 are coupled by a fixing ring 103.

The housing 101 may be provided with a safety pin 104 to fix the recess 130 having the elastic member 131 in a compressed position. Preferably, the safety pin 104 is provided on the nipple portion 132 side of the immersion to fix the immersion in the state in which the immersion 130 is compressed. In order to facilitate attachment and removal of the safety pin, the safety pin 104 preferably extends from the attachment position in the housing to the outside of the housing. The safety pin 104 fixes the sink 130 separately from the support member 120. Therefore, the safety pin 104 facilitates the assembly of the sinking 130 into the housing portion 101, and is attached until the aerosol fire extinguisher is finally installed, thereby malfunctioning due to breakage of the glass bulb during handling, movement, and storage of the aerosol fire extinguisher. To prevent it. In addition, the safety pin 104 serves as a stabilizer so that the sink 130 is not triggered when replacing the glass bulb. The safety pin 104 is removed after the final installation of the aerosol fire extinguisher, so that the automatic operation device 10 can operate in response to the topic by the above-described configuration and operation mechanism.

According to the present invention, the primer 140 may have a structure such as a sports or military bullet primer known in the art, and may operate when the ignition agent 210 is operated by receiving an impact energy of a predetermined level or more. Generates. The primer 140 is included in the automatic operation device 10 as shown. Although not shown in the drawings, according to another embodiment of the present invention, a primer can be received directly in the aerosol generator 20. It will be appreciated by those skilled in the art that even in this case the impact energy of the sinking 130 can be applied directly to the primer to operate the primer.

Figure 3 shows an aerosol fire extinguisher equipped with a hybrid automatic operation device (10 ') according to the present invention. The automatic actuating device 10 'is substantially the same as the automatic actuating device 10 of FIGS. 1 and 2 except that an electrical actuating device including an operating power line 160 and an electrical match 170 is added. Do. The operation power line 160 is connected to a control panel of an aerosol fire extinguisher capable of supplying an operation signal automatically in response to a fire or at the user's option. The operation signal provided from the control panel is supplied to the electric match 170 disposed in the aerosol fire extinguisher via the operation power line 160. According to an operation signal, which is preferably a voltage or a current, the electric match 170 ignites the ignition agent and the aerosol generator is burned by the flame energy generated from the ignition agent to generate a fired aerosol. By combining these electrical actuators, a network can be constructed, thus allowing centralized control of the aerosol fire extinguisher. Even if the working power line is damaged by fire in the event of a fire, the glass bulb type operation device of the automatic operation device can be operated to operate the aerosol fire extinguisher with high reliability.

1 is a cross-sectional view of an aerosol fire extinguisher having a glass bulb type automatic operation device according to the present invention.

FIG. 2 is an enlarged view of the glass bulb automatic operation device shown in FIG. 1.

3 is a cross-sectional view of an aerosol fire extinguisher having a hybrid automatic operation device according to the present invention.

Claims (8)

In the automatic operation device for aerosol fire extinguisher, A heat-sensitive glass bulb bursting upon rising to a temperature above a predetermined temperature in response to the ambient temperature; A sink disposed in the housing of the autonomous device so as to be movable between a price position for hitting the primer and a compression position for hitting the primer, the elastic member having an elastic restoring force at the compression position; And A support member for supporting the glass bulb and fixing the sink in the compression position; When the glass bulb rupture, the support member releases the sinking having elastic restoring force from the compression position to move the sinking to the price position, the restoring force is converted into an impact force to strike the primer, the primer Automatic operation device for aerosol fire extinguisher, characterized in that for operating. The aerosol fire extinguisher autooperating apparatus according to claim 1, further comprising a primer priced by the sinking to ignite the ignition agent of the aerosol fire extinguisher. The method according to claim 1 or claim 2, wherein the sinking comprises a support pin for supporting the glass bulb and the fixing member for fixing the sinking in the compressed position, the support pin and the fixing member is separated from the support member when the glass bulb bursts Or automatic operation device for aerosol fire extinguisher, characterized in that the separation. 4. The automatic actuating device for an aerosol fire extinguisher according to claim 3, wherein the sink has a recess for engaging the fixing member to fix the sink in a compressed position. 4. The automatic actuating device for aerosol fire extinguisher according to claim 3, wherein the fixing member is a spherical fixture. The aerosol fire extinguisher automatic operation device according to claim 1 or 2, wherein the sinking includes a protruding tip that strikes the primer, and the radius of the tip is 0.9 to 1.5 mm. The automatic actuating device for aerosol fire extinguisher according to claim 1 or 2, wherein the elastic member of the sink has an elastic modulus of 5 to 8 kgf / mm. The automatic actuating device for aerosol fire extinguisher according to claim 1 or 2, further comprising an electric actuator including an electric match for igniting an ignition agent of the aerosol fire extinguisher and an activating power line for transmitting an electrical signal to the electric match.

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