WO2023211311A1

WO2023211311A1 - Circuit breaker with fire-extinguishing aerosol generator

Info

Publication number: WO2023211311A1
Application number: PCT/RU2023/000075
Authority: WO
Inventors: Евгений Сергеевич КАПЛУН
Original assignee: ГАБЛИЯ, Юрий Александрович; Евгений Сергеевич КАПЛУН
Priority date: 2022-04-29
Filing date: 2023-03-24
Publication date: 2023-11-02

Abstract

The invention relates to the field of electrical engineering, and more particularly to the emergency shutdown of electrical equipment under the effect of high temperatures. The technical result consists in improving the timeliness of an initial fire-extinguishing action and more effectively impeding the spread of fire in an enclosed space. This is achieved by the simultaneous use within the claimed product of a differential and automatic phase shutdown mechanism, a neutral (N) shutdown mechanism, a fire-extinguishing aerosol generator together with an electrical igniter therefor, a heat-sensitive trigger device, and a heat-sensitive shutdown device situated in a region exposed to the heat produced when a fire-extinguishing aerosol generator module is in operation, a heat-sensitive trigger device and a heat-sensitive shutdown device which are connected in series, a sensor for sensing activation of the fire-extinguishing aerosol generator module, a smoke detector, a heat-sensitive igniter capable of activating the fire-extinguishing aerosol generator module without activating the electrical igniter, and an assembly for fastening to a DIN rail, said assembly being in the form of a slot for a DIN rail, the slot being disposed on the rear side of a housing of the device and having a fastening clip mounted therein for securing the housing to the DIN rail.

Description

CIRCUIT BREAKER WITH FIRE EXTINGUISHING AEROSOL GENERATOR

Field of technology

The claimed group of inventions relates to the field of electrical engineering and energy and can be used in the form of a Differential automatic switch (Difavtomat) or an input Differential automatic switch (input Difavtomat) of electrical panels to prevent electric shock to a person, prompt emergency shutdown of electrical equipment using differential, thermal or electromagnetic releases without initiating a fire extinguishing system or when exposed to high temperatures, for example, during a fire, when initiating an aerosol fire extinguishing system (extinguishing a fire using a fire extinguishing aerosol generator (GOA) while simultaneously opening the line by the differential and automatic switch mechanism. In this case, the device is designed to installation on DIN rail.

State of the art

Differential circuit breakers (Difavtomats) are known from the state of the art, installed in an electrical panel on a DIN rail and performing the functions of a fuse in the event of a short circuit or prolonged overload of the power line, as well as protecting people from electric shock in case of electric current leaks. For example, such as differential circuit breakers in a molded case for currents 16-630 A, up to 690 V Schneider Electric, product catalog 2021 (available online on the Internet resource https://download.schneider-electric.com).

However, such known solutions do not ensure the opening of power circuits in the event of a fire in electrical panels and do not have the ability to extinguish fire in electrical panels.

A solution is known from the patent level of technology, which is a pyrotechnic electrical circuit disconnector (RU 139706 U1, 04/20/2014). The known disconnector contains a housing in which a conductor and a pyrotechnic charge with a melting temperature of the conductor lower than the combustion temperature of the pyrotechnic charge are located in close proximity or in contact with each other. charge, while the pyrotechnic charge is launched using a thermal cord or from a fire detector.

The technical result that this solution is aimed at achieving is the reliable opening of the electrical circuit (switching off the power source) in the event of a fire or its threat, which prevents the development of a fire due to a short circuit.

However, the known solution, like the one mentioned above, does not provide the possibility of eliminating the source of fire. In addition, the functioning of the disconnector when activated by a fire detector depends on the performance of external means, which reduces the reliability of its operation.

It should also be noted that the known solution does not operate quickly, since for its operation it is necessary to reach the activation temperature of the thermal cord, and the source of this temperature is external, i.e. provided by the source of fire itself. Obviously, until this temperature is reached, the fire will spread unhindered, causing damage to surrounding equipment.

To ensure the possibility of not only opening circuits, but also implementing primary automatic fire extinguishing, the prior art uses a combination of opening means and fire extinguishing means, as is presented, for example, in patent source CN 210040091 U, 02/07/2020.

In this solution, the circuit breaker contains a main body, as well as a container with a fire extinguishing agent and a supercharger attached to it. Control of the operation of the supercharger and spraying of the fire extinguishing agent is ensured when a certain temperature is reached due to a thermal switch located on the switch body.

The known solution eliminates the above-mentioned disadvantages of the prior art in terms of providing the primary fire extinguishing function. Despite this, the known solution has a number of disadvantages, which are as follows.

The complexity and bulkiness of the design of the specified switch prevents its placement in a standard housing of electrical devices for installation on DIN - rail into the electrical panel. At the same time, the placement of means capable of extinguishing a fire in an electrical panel is critically important, since in a closed limited space of a panel with tightly packed electrical modules, the spread of fire occurs rapidly, which leads to the emergence of secondary fires due to a short circuit of wires with burnt or melted insulation and irreversible damage to modules.

In addition to the above, the known solution, like the one discussed above under patent RU 139706 U1, does not have operational efficiency, since for its operation it is necessary to reach the activation temperature of the thermal switch, and this temperature is determined by an external source, i.e. the source of the fire itself. As a result, before the fire extinguishing agent is activated, significant damage to the electrical modules located in the electrical panel is possible.

From the patent level of technology, a solution is known that is an autonomous fire extinguishing device with fixation on a DIN rail (utility model patent No. 204767 dated 06/09/21). The known device contains a housing in which a fire extinguishing aerosol generator module with a thermochemical initiator is located.

The autonomous device is made in the form of a separate module and does not have the ability to open power electrical lines, which significantly increases the likelihood of re-ignition of electrical wiring in electrical cabinets and increases the likelihood of electric shock to people. Also, the autonomous device cannot be initiated by an external control signal and does not generate an information signal about activation, which does not allow combining autonomous devices into groups or informing about the start of the fire extinguishing process.

The technical problem is to overcome the above-mentioned disadvantages of analogues. The technical result consists in increasing the efficiency of primary fire extinguishing with increasing efficiency in preventing the spread of fire in a confined space, in particular, such as an electrical panel, while simultaneously opening the electrical circuit, while the described device can open the electrical circuit in the event of a short circuit or prolonged excess load, in the event of electric current leaks without triggering an aerosol fire extinguishing system, operating like a typical differential circuit breaker for single or three-phase connections.

Disclosure of the Invention

The specified technical result is achieved in a differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator (GOA) module, made in a housing mounted on a DIN rail, containing power electrical terminals for connecting the phase wire, electrical terminals for connecting the neutral wire N, located in the housing. a fire extinguishing aerosol generator module (FAG), a differential and automatic phase shutdown mechanism and a neutral wire N shutdown mechanism, an electric igniter of the GOA, a thermal igniter, an initiating temperature-sensitive device (tl), and/or a smoke sensor (d2), configured to start the electric igniter of the GOA , a shutdown temperature-sensitive device (t2), configured to control the shutdown of the automatic phase shutdown mechanism and the neutral wire shutdown mechanism, wherein the input phase and input zero N terminals are connected through the control conductors of the electric igniter GOA to the initiating temperature-sensitive device (tl) and/or smoke sensor (d2) and an electric igniter GOA connected to the GOA module, as well as through conductors connected to a contact group for external triggering of the electric igniter and the GOA module, and a shutdown temperature-sensitive device (t2) is located in close proximity to the GOA module or in the GOA module and is connected through conductors with a mechanism for differential and automatic phase shutdown and a mechanism for shutting off the neutral wire N; in the lower part of the housing there are holes for the exit of the aerosol-forming composition, holes for the operation of the initiating temperature-sensitive device (tl) and/or smoke sensor d2, while the thermal igniter is configured to start the HOA module without starting the electric igniter, as well as the possibility of triggering the initiating temperature-sensitive device (tl) is less than the temperature of the shutdown temperature-sensitive device (t2) and is determined by the requirements for the response temperature of the fire extinguishing aerosol generator (GOA).

In an alternative embodiment of the device, the smoke sensor contains a control and power module

In an alternative embodiment of the device, the DIN rail mounting assembly is a DIN rail slot located on the rear side of the device housing, in which a latch fastening is installed for fixing the housing to the DIN rail.

In an alternative embodiment, the device contains a temperature-sensitive device (tl), connected through a contact group and wires to the initiating voltage, capable of operating in the event of a fire in the electrical cabinet and, using an electric igniter, initiating a GOA to extinguish the fire in the electrical panel.

In an alternative embodiment, the fire extinguishing aerosol generator (FAG) may contain a trigger sensor for generating and outputting a signal to external devices about the fact that the fire extinguishing process has started.

In a preferred embodiment, the initiation unit is made in the form of a thermal igniter and an electric igniter, which in turn is connected to a triggering temperature-sensitive device (tl).

The housing can be made in the form of standard electrical equipment installed in an electrical cabinet.

The possibility of installing the proposed device, which includes a gas propellant with a solid propellant aerosol-forming or gas-forming composition, inside confined spaces with electrical equipment on a DIN rail makes it possible to suppress fires with high fire extinguishing efficiency, without requiring the installation of additional fastening units.

Design of a unit for mounting on a DIN rail in the form of a slot located on the back side of the device housing, in which a latch-mount for fixing the housing on a DIN rail, is ergonomic - convenient for installing and removing the device, which makes it possible to install it in various places (including hard-to-reach) distribution boards or cabinets, which in turn increases the efficiency of autonomous fire extinguishing in case of electrical equipment fires.

Taking into account that the DIN rail is widely used for fastening various modular electrical equipment in cabinet-type rooms, and also that the aerosol-forming composition, in comparison with powder, carbon dioxide and foam compositions, has no restrictions on use (in terms of the power of the protected electrical equipment and the presence of voltage) and does not have a negative impact on electrical equipment, the proposed fire extinguishing device can be installed anywhere in a protected object equipped with a DIN rail.

In a development embodiment, when using the device in three-phase networks, the housing additionally houses phase terminals (two more pairs) corresponding to these phases (“B”, “C”) with differential and automatic shutdown devices for these phases connected by a single on/off lever machine with an automatic shutdown mechanism for phase “A” and a mechanism for shutting off the neutral wire N.

The specified technical result is achieved in a differential circuit breaker with a fire extinguishing aerosol generator (GOA) made in a housing mounted on a DIN rail, containing power electrical terminals for connecting the phase wire, electrical terminals for connecting the neutral wire N, a differential and automatic shutdown mechanism located in the housing phase and mechanism for disconnecting the neutral wire N, a fire extinguishing aerosol generator module (FAG), an electric igniter of the FEA, a thermal igniter, an initiating temperature-sensitive device (t2) and/or a smoke sensor (d2), configured to start the electric igniter of the FEA, connected through conductors to the contact group for external triggering of the electric igniter and the GOA module, as well as a thermally sensitive switching device (tl) connected in series with it, configured to control the shutdown of the automatic phase shutdown mechanism and the neutral wire shutdown mechanism, with the input phase “A” and the input “zero” N The terminals are connected through control conductors to an electric igniter GOA connected to the GOA module, the initiating temperature-sensitive device (t2) and/or sensor smoke (d2) and a disconnecting temperature-sensitive device (tl), and the disconnecting temperature-sensitive device (tl) is additionally connected through conductors to a mechanism for differential and automatic phase shutdown and a mechanism for disconnecting the neutral wire N, in the lower part of the housing there are holes for the exit of an aerosol-forming composition, holes for operation of the initiating temperature-sensitive device (t2) and/or smoke sensor d2 and the shutdown temperature-sensitive device (tl), wherein the thermal igniter is configured to start the HOA module without starting the electric igniter, as well as the possibility of triggering the initiating temperature-sensitive device (tl) less than the temperature of the shutdown temperature-sensitive device device (t2) and is determined by the requirements for the response temperature of the fire extinguishing aerosol generator (FAG).

In an alternative embodiment of the device, the smoke sensor contains a control and power module.

Alternatively, the device may contain a trigger sensor for a fire extinguishing aerosol generator (FAG) to generate and output a signal to external devices about the fact that the fire extinguishing process has started.

In a preferred embodiment, the initiation unit is made in the form of a thermal igniter and an electrical igniter connected to it, which in turn is connected to a triggering temperature-sensitive device (tl).

The housing can be made in the form of standard electrical equipment installed in an electrical cabinet. The possibility of installing the proposed device, which includes a gas propellant with a solid propellant aerosol-forming or gas-forming composition, inside confined spaces with electrical equipment on a DIN rail makes it possible to suppress fires with high fire extinguishing efficiency, without requiring the installation of additional fastening units.

The design of the unit for mounting on a DIN rail is in the form of a slot located on the back side of the device case, in which a latch fastening is installed for fixing the case on a DIN rail, is ergonomic - convenient for installing and removing the device, which makes it possible to install it in various places (including hard-to-reach ones) of distribution boards or cabinets, which in turn increases the efficiency of autonomous fire extinguishing in case of electrical equipment fires.

The following description provides information regarding the implementation of the device and confirmation of the achievement of the specified technical result.

Carrying out the invention

In accordance with the first embodiment of the device, the following provides information about an advantageous embodiment of the device, which is not intended to limit the scope of the requested protection, defined by the characteristics of an independent claim.

In order to more fully understand the essence of the patent, references are made in the description to the explanatory drawing (Fig. 1, Fig. 2, Fig. 3, Fig. 4), according to which the appearance of the housing with a cut for a single-phase design (Fig. 1), diagram of a differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator in a single-phase design (Fig. 2), appearance of a housing with a section for a three-phase design (Fig. 3), diagram of a differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator in a three-phase version (Fig. 4), as well as a set of elements placed in a differential circuit breaker with GOA in a single-phase version (Fig. 1, Fig. 2) and a three-phase version (Fig. 3, Fig. . 4).

In the preferred embodiment, the proposed product is mounted in an electrical cabinet on a DIN rail and is a separate device. The product can be used in both single-phase and three-phase networks, for which additional pairs of phase terminals B-B' and C-C' are installed in it.

According to FIG. 1 and fig. 2, the product body contains: a pair of phase terminals (14-14’) and a pair of neutral terminals (13-13’). Connected to the device through the phase terminals are the mechanism of the differential and automatic phase switch (1), the power wires of the phase, and through the neutral terminals N - the mechanism of the zero switch (2), the neutral wire. On the underside of the housing according to Fig. 1 and fig. 2 there are exit holes (7) for the exit of the aerosol generated during the operation of the HOA module (12), as well as inlet holes (6) for the correct operation of the initiating temperature-sensitive device (tl) (5) and/or the smoke sensor (d2) (17) .

Mainly, mechanisms for differential and automatic shutdown of the phase and neutral wire N are fixed in the center of the housing, and a fire extinguishing aerosol generator (FAG) (12) with an electric igniter FAG (9) and a thermal igniter (22) is fixed in the side housing. GOAs are widespread in the state of the art. As an example, we can consider the principle of operation of the generator, based on the inhibition of chemical processes occurring in the flame by highly dispersed particles (aerosol) of alkali metal salts, released during the combustion of an aerosol-forming charge and capable of being suspended for a long time, which ensures the elimination of the source fire. At the same time, it is known that when the HOA operates, a zone with a significantly increased temperature is provided around it (for example, more than 300°C). This effect is used in the device to increase the efficiency of the primary fire extinguishing with an increase in the effectiveness of preventing the spread of fire in a confined space, and the initiation of a phase shutdown mechanism (1) and a zero N shutdown mechanism (2).

In the immediate vicinity of the GOA module (12), a thermally sensitive switching device (t2) (8) is placed in the device body (can be equipped with an electrical power supply and control module - not shown) according to Fig. 1 and Fig. 2, responsible for generating a signal to turn off the differential and automatic phase switch and turn off zero N in the event of fire of the electrical panel and activation of the GOA module (12) using the electric initiator GOA (9), the signal for which is generated by the initiating temperature-sensitive device (tl) (5) (can be equipped with an electrical power and control module - not shown) and/or a smoke sensor (d2) (17). The choice of distance from the shutdown temperature-sensitive device (t2) (8) to the GOA module (12) is selected from the condition that when the GOA module (12) is triggered, the resulting temperature ensures that the shutdown temperature-sensitive device (t2) (8) triggers due to overheating (for example, when 100°C), thereby closing the disconnecting temperature-sensitive device (t2) (8) generating a signal to disable the automatic phase and neutral wire disconnection mechanism N (4). Thus, the term “close proximity” within the framework of this application should be understood as such a placement in which the heat from the operating HOA module (12) could ensure the activation of the shutdown temperature-sensitive device (t2) (8).

Next, as shown in FIG. 1 and fig. 2, the housing contains an initiating temperature-sensitive device (tl) (5) and/or a smoke sensor (d2) (17). The properties of the initiating temperature-sensitive device (tl) (5) are selected in such a way that its operation is ensured before the response temperature of the shutdown temperature-sensitive device (t2) (8) is reached, and the smoke sensor (d2) (17) is activated when a certain temperature appears in the electrical cabinet concentration of combustion products. For example, the response temperature of the initiating temperature-sensitive device (tl) (5) can be selected in a discrete range (for example, 60°C, 70°C, 80°C) depending on the placement conditions of the device. The initiating temperature-sensitive device (tl) (5) can additionally be equipped with an electrical power supply and control module (not shown) for the electric igniter GOA (9). The initiating temperature-sensitive device (tl) (5) and the smoke sensor (d2) (17) can be connected in parallel, which allows you to start the extinguishing process when any of the sensors is triggered, or in series, which involves the activation of the GOA module (12) only when the initiating temperature-sensitive device is triggered (tl) (5) and smoke sensor (d2) (17) simultaneously. Also, in the GOA module (12), together with the electric GOA igniter (9), a thermal igniter (22) is built in, capable of independently starting the GOA module (12) when the response temperature is reached.

The proposed device works as follows.

In normal condition fig. 1, fig. 2 phase terminals (14-14’) are connected to a differential and automatic shutdown mechanism. This ensures the flow of electric current through the circuit: Terminal (14) - Conductor - Differential and automatic shutdown mechanism (1) - Conductor - Terminal (14’). Also, the neutral terminals (13-13’) are connected to each other by corresponding conductors through the zero disconnect mechanism N (2), ensuring the functionality of the power electrical panel. Simultaneously with those indicated, the input terminal (14 phase “A”) and the input terminal (13 neutral “wire” N) through the corresponding control conductors are connected to the initiating temperature-sensitive device (tl) (5) and/or smoke sensor (d2) (17) and an electric igniter GOA (9) according to Fig. 1 and fig. 2.

With a three-phase design of the device Fig. 3, fig. 4, current flow circuits are added in phase “B”: Terminal (14) - Conductor - Differential and automatic shutdown mechanism (15) - Conductor - Terminal (14') and phase “C”: Terminal (14) - Conductor - Differential and automatic shutdown mechanism automatic shutdown (16) - Conductor - Terminal (14').

When the temperature in the electrical panel (fire of the electrical panel) in which the device is installed rises to a predetermined critical value determined by the properties of the initiating temperature-sensitive device (tl) (5), (with or without an electrical power supply and control system) (for example, 60 ° C , 70°C, 80°C), heated air enters the housing (3) of the device through the hole (6), due to which the initiating temperature-sensitive device (tl) (5) and/or smoke sensor (d2) (17) connect the electric igniter GOA (9), (through or without an electrical power supply system) to the input terminal (14 phase “A”) and the input terminal (13 “neutral wire” N), thereby ensuring the flow of electric current capable of starting the electric igniter GOA (9) and initiate the operation of the GOA module (12).

When the GOA module (12) starts operating from the housing (3) through the outlet openings (7) according to Fig. 1 and fig. 2, the fire extinguishing aerosol begins to emerge in the form of a gaseous mixture, filling the protected volume of the electrical panel and suppressing the combustion of the components of the electrical panel. At the same time, a heating zone is formed around the GOA module (12) to a temperature of, for example, over 300°C, influencing with its heat flow the shutdown temperature-sensitive device (t2) (8), which, heating up above the temperature of its own overheating response (for example, more than 100 °C), is triggered, thereby generating an opening signal for the automatic shutdown mechanism of phase “A” (1) and the zero mechanism - zero shutdown N (2), and with a three-phase implementation, phase “B” (15) and phase “C” are additionally opened (16) according to Fig. 3 and fig. 4.

Thus, when the initiating temperature sensitive device (tl) (5) and/or the smoke sensor (d2) (17) is triggered, according to FIG. 1 and fig. 2, as well as Fig. 3 and Fig.4 with a three-phase design, during an electrical panel fire, the panel is extinguished simultaneously using the GOA module (12) and the opening of phase “A” (1) or phases “A”, “B”, “C” (1, 15, 16) in a three-phase version along the line of phase terminals (14-14') and neutral wire N (2) along the line of neutral terminals N (13-13') according to Fig. 1, fig. 2, fig. 3, fig. 4, which can also be attributed to the advantage of the proposed device compared to solutions known from the prior art.

A special feature of this device is that if the initiating device (tl) (5) or the electric igniter GOA (9) fails to operate or the input voltage fails, the GOA module will still be started using a thermal igniter (22) (Fig. 1, Fig. 3), taking into account that the response temperature of the thermal igniter is higher than the response temperature of the initiating device (tl) (5), for example, it can be 1700C.

It is also important to note that the device contains an input contact group (18), which allows, when a signal is applied to it, to carry out a forced start electric igniter GOA (9) using an external device. It is important to note that this contact group also has the opposite function - when connecting several circuit breakers or circuit breaker expansion modules in a line to increase the protected volume, when one of the initiating temperature-sensitive devices (t 1) (5) and/or a smoke sensor ( d2) (17) in any of the devices, the remaining connected devices will receive the trigger input signal and will be forced to initiate along with the triggered device.

The circuit breaker also has a GOA activation sensor (21), which in turn sends a signal through conductors (20) to the contact group (19) for processing the received signal by external control automation.

In the preferred embodiment of the device, in the rear part of the housing (3) there is a slot in which a latch-mount (23) is installed, intended for fixing the housing (3) with the GOA (12) to the DIN rail.

The device body can also be fixed to a DIN rail using a screw connection, however, fastening using a DIN rail assembly with a latch (23) is preferable, because makes it possible to install the device in a wider range of locations in a panel or cabinet, which leads to increased fire extinguishing efficiency.

A distinctive feature of the device is also the ability to turn off the power part of the electrical panel in the event of a short circuit or prolonged excess load of the power line, or overcurrents, or leakage of electric current without initiating the GOA module (12) with the possibility of subsequently setting the differential circuit breaker (Difavtomat) to its original state using mechanism (4) and continue to operate the device.

In turn, the use of the GOA module (12) as a means of ensuring the operation of a differential circuit breaker (Difavtomat) also ensures acceleration of the opening of electrical circuits before a short circuit or overvoltage or current leakage occurs, thereby preventing the occurrence of secondary fires, since the time, necessary to achieve the response temperature of the thermally sensitive tripping device (t2) (8) due to the operation of the GOA module (seconds) is significantly less than if the operation of the shutdown temperature-sensitive device (t2) (8) were provided by the heat of an external source (i.e., the source of the fire).

Thus, only through the joint use of the above means and their functioning through the specified connections is it possible to achieve the technical result to which the proposed device is aimed.

The device can be implemented using means and methods known from the prior art for a specialist, and an analysis of the state of the art did not reveal solutions that would have all the essential features presented in the formula.

In accordance with the second embodiment of the device, in order to more fully understand the essence of the patent, references are made in the description to the explanatory drawing (Fig. 5, Fig. 6, Fig. 7, Fig. 8), according to which the appearance of the housing with a cut is presented for a single-phase design (Fig. 5), diagram of a differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator in a single-phase version (Fig. 6), external view of the case with a cut for a three-phase version (Fig. 7), diagram of a differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator aerosol in a three-phase version (Fig. 8), as well as a set of elements placed in a differential circuit breaker with a GOA in a single-phase version (Fig. 5, Fig. 6) and a three-phase version (Fig. 7, Fig. 8).

According to FIG. 5 and fig. 6, the product body contains: a pair of phase terminals (14-14') and a pair of neutral terminals (13-13'). Connected to the device through the phase terminals are the mechanism of the differential and automatic phase switch (1), the power wires of the phase, and through the neutral terminals N - the mechanism of the zero switch (2), the neutral wire. On the underside of the housing according to Fig. 5 and fig. 6 there are outlet holes (7) for the exit of the aerosol generated during operation of the GOA module (12), as well as inlet holes (6) for the correct operation of the shutdown temperature-sensitive device (tl) (5) and/or smoke sensor (d2) (17) and the initiating temperature-sensitive device (t2) (8).

Mainly, mechanisms for differential and automatic shutdown of the phase and neutral wire N are fixed in the center of the housing, and a fire extinguishing aerosol generator (FAG) (12) with an electric igniter FAG (9) and a thermal igniter (22) is fixed in the side housing. GOAs are widespread in the state of the art. As an example, we can consider the principle of operation of the generator, based on the inhibition of chemical processes occurring in the flame by highly dispersed particles (aerosol) of alkali metal salts, released during the combustion of an aerosol-forming charge and capable of being suspended for a long time, which ensures the elimination of the source fire.

Thermal switching device (tl) (5) (can be equipped with an electrical power supply and control module - not shown) and/or a smoke sensor (d2) (17) (with or without a control and power system) according to FIG. 5 and fig. 6, is responsible for generating a signal to turn off the differential and automatic phase switch and turn off zero N in the event of a fire in the electrical panel.

Next, as shown in FIG. 5 and fig. 6, the housing houses an initiating temperature-sensitive device (t2) (8). The properties of the initiating temperature-sensitive device (t2) (8) are selected in such a way that its operation is ensured after reaching the response temperature of the shutdown temperature-sensitive device (tl) (5), installed next to it and connected in series with it in the electrical circuit and/or sensor operation smoke (d2) (17). For example, the response temperature of the shutdown temperature-sensitive device (tl) (5) can be selected in a discrete range (for example, 600C, 700C, 800C) depending on the placement conditions of the device, and the response temperature of the initiating temperature-sensitive device (t2) (8) can be selected in the range (for example, 90°C, 100°C, 110°C). The initiating temperature-sensitive device (t2) (8) can additionally be equipped with an electrical power and control module (not shown). The smoke sensor (d2) (17) can be connected to the thermally sensitive shutdown device (tl) (5) in parallel or in series, or may be completely absent, depending on the task at hand. Also built into the GOA module (12) together with the electric igniter GOA (9) thermal igniter (22) capable of independently starting the GOA module (12) when the response temperature is reached.

The proposed device works as follows.

In normal condition fig. 5, fig. 6 phase terminals (14-14’) are connected to a differential and automatic shutdown mechanism. This ensures the flow of electric current through the circuit: Terminal (14) - Conductor - Differential and automatic shutdown mechanism (1) - Conductor - Terminal (14’). Also, the neutral terminals (13-13’) are connected to each other by corresponding conductors through the zero disconnect mechanism N (2), ensuring the operability of the power electrical panel. Simultaneously with those indicated, the input terminal (14 phase “A”) and the input terminal (13 “neutral wire” N) through the corresponding control conductors are connected to the initiating temperature-sensitive device (t2) (8), the shutdown temperature-sensitive device (tl) (5) and /or a smoke sensor (d2) (17) and an electric igniter GOA (9) according to Fig. 5 and fig. 6. At the same time, the shutdown temperature-sensitive device (tl) (5) is connected with one of its outputs through the control conductor to the output terminal of phase “A” (14'), and with the second output through the control conductor with the input terminal (13 “neutral wire” N): Output terminal (14') phase “A” - Disconnecting temperature-sensitive device tl (5) - Input terminal (13 “neutral” wire N).

With a three-phase design of the device Fig. 7, fig. 8, current flow circuits are added in phase “B”: Terminal (14) - Conductor - Differential and automatic shutdown mechanism (15) - Conductor - Terminal (14') and phase “C”: Terminal (14) - Conductor - Differential and automatic shutdown mechanism automatic shutdown (16) - Conductor - Terminal (14').

When the temperature in the electrical panel (fire of the electrical panel) in which the device is installed rises to a predetermined critical value determined by the properties of the disconnecting temperature-sensitive device (tl) (5), (with or without an electrical power supply and control system) (for example, 60 ° C , 70°C, 80°C), heated air enters the housing (3) of the device through the hole (6), due to which the shutdown temperature-sensitive device (tl) (5) is activated, which leads to the shutdown of the differential and automatic circuit breaker of phase “A” ” and the neutral wire “N”, and with a three-phase implementation, phase “B” and phase “C” according to Fig. 7 and fig. 8. Exactly the same shutdown of phase “A” or phases “A”, “B”, “C” will occur if the smoke sensor (d2) (17) is triggered.

If the fire continues to develop when the power is turned off to devices connected after the differential circuit breaker (Difavtomat) with a fire extinguishing aerosol generator, and the temperature continues to rise, the initiating temperature-sensitive device (t2) (8) is triggered, as a result of which the electric current briefly begins to flow along the circuit: Input terminal (14) - Conductor - Electric igniter GOA (9) - Initiating temperature-sensitive device (t2) (8) - Cutting-off temperature-sensitive device (tl) (5) - Conductor - Input terminal (13), thereby allowing a short-term flow of electric current, capable of starting the electric igniter of the GOA (9) and initiating the operation of the GOA module (12). After initiation of the electric igniter GOA (9), it burns out and finally opens the circuit. Input terminal (14) - Conductor - Electric igniter GOA (9) - Initiating temperature-sensitive device (t2) (8) - Shutting-off temperature-sensitive device (tl) (5) - Conductor - Input terminal (13).

When the GOA module (12) starts operating from the housing (3) through the outlet openings (7) according to Fig. 5 and fig. 6, the fire extinguishing aerosol begins to emerge in the form of a gaseous mixture, filling the protected volume of the electrical panel and suppressing the combustion of the components of the electrical panel.

Thus, when the shutdown temperature-sensitive device (tl) (5) and/or the smoke sensor (d2) (17) and the initiating temperature-sensitive device (t2) (8) are sequentially activated, according to FIG. 5 and fig. 6, as well as Fig. 7 and fig. 8 with a three-phase design, during an electrical panel fire, the panel is extinguished using the GOA module (12) and phase “A” (1) or phases “A”, “B”, “C” (1, 15, 16) are opened. in a three-phase version along the line of phase terminals (14-14') and neutral wire M (2) along the line of neutral terminals N (13-13') according to Fig. 5, fig. 6, fig. 7, fig. 8, which can also be attributed to the advantage of the proposed device compared to solutions known from the prior art.

A special feature of this device is that in the event of failure of the initiating device (tl) (5) or the electric igniter GOA (9) or loss of input voltage, the GOA module will still be started using a thermal igniter (22) (Fig. 5, Fig. 7), taking into account that the temperature activation of the thermal igniter is higher than the response temperature of the initiating device (tl) (5), and, for example, can be 1700C.

It is also important to note that the device contains an input contact group (18), which allows, when a signal is applied to it, to force the start of the electric igniter GOA (9) using an external device. It is important to note that this contact group also has the opposite function - when connecting several power circuit breakers or power circuit breaker expansion modules in a line to increase the protected volume, when one of the initiating temperature-sensitive devices (tl) (5) and/or a smoke sensor is triggered (d2) (17) in any of the devices, the other connected devices will receive the trigger input signal and will be forced to initiate along with the triggered device.

Thus, only through the joint use of the above means and their functioning through the specified connections is it possible to achieve the technical result to which the proposed device is aimed. The device can be implemented using means and methods known from the prior art for a specialist, and an analysis of the state of the art did not reveal solutions that would have all the essential features presented in the formula.

Claims

Claim

1. Differential circuit breaker with a fire extinguishing aerosol generator (GOA) module, made in a housing mounted on a DIN rail, containing power electrical terminals for connecting the phase wire, electrical terminals for connecting the neutral wire N, and a fire extinguishing aerosol generator module (GOA) located in the housing ), a mechanism for differential and automatic phase shutdown and a mechanism for shutting off the neutral wire N, an electric igniter GOA, a thermal igniter, an initiating temperature-sensitive device (tl) and/or a smoke sensor (d2), configured to start an electric igniter GOA, a shutdown temperature-sensitive device (t2) , made with the ability to control the shutdown of the automatic phase shutdown mechanism and the neutral wire shutdown mechanism, wherein the input phase terminal A and the input zero N terminal are connected through the control conductors of the electric igniter GOA to the initiating temperature-sensitive device (tl) and/or smoke sensor (d2) and electric a GOA igniter connected to the GOA module, and also connected through conductors to a contact group for external triggering of the electric igniter and the GOA module, and a shutdown temperature-sensitive device (t2) is located in the emission zone of the aerosol-forming composition and is connected through conductors to the automatic shutdown mechanism of phase A and the mechanism disconnecting the neutral wire M; in the lower part of the housing there are holes for the exit of the aerosol-forming composition, holes for the operation of the initiating temperature-sensitive device (tl) and/or smoke sensor d2, while the thermal igniter is configured to start the HOA module without starting the electric igniter, and the initiating temperature-sensitive device is configured to be triggered when temperature (tl) is less than the temperature of the shutdown temperature-sensitive device (t2), determined by the requirements for the response temperature of the fire extinguishing aerosol generator (GOA).

2. The differential circuit breaker according to claim 1, characterized in that it additionally contains two pairs of phase terminals: phases “B” and “C”, connected to each other and to the mechanism of phase “A” by differential and automatic phase shutdown mechanisms.

3. Differential circuit breaker according to claim 1, characterized in that the aerosol-forming composition is a low-temperature solid fuel composition.

4. Differential circuit breaker according to claim 1, characterized in that the smoke sensor contains a control and power module.

5. The differential circuit breaker according to claim 1, characterized in that it additionally contains a GOA module response sensor connected by conductors to a contact group to generate a GOA module response signal for external devices.

6. Differential circuit breaker according to claim 1, characterized in that the assembly for mounting on a DIN rail is a slot for a DIN rail located on the back side of the device housing, in which a latch is installed for fixing the housing on the DIN rail.

7. The differential circuit breaker according to claim 1, characterized in that the temperature-sensitive device (tl) is connected through a contact group and wires to the initiating voltage, which is capable of operating in the event of a fire in the electrical cabinet and, using an electric igniter, initiating a GOA to extinguish the fire in the electrical panel.

8. The differential circuit breaker according to claim 1, characterized in that it contains an activation sensor of the fire extinguishing aerosol generator (FAG) for generating and outputting a signal to external devices about the fact that the fire extinguishing process has started.

9. Differential circuit breaker according to claim 1, characterized in that the initiation unit is made in the form of a thermal igniter and an electric igniter, which, in turn, is connected to a triggering temperature-sensitive device (tl).

10. Differential circuit breaker with a fire extinguishing aerosol generator (GOA), made in a housing mounted on a DIN rail, containing located in the housing are power electrical terminals for connecting the phase wire, electrical terminals for connecting the neutral wire N, a mechanism for differential and automatic phase disconnection and a mechanism for disconnecting the neutral wire N, a fire extinguishing aerosol generator (GOA) module, an electric igniter of the GOA, a thermal igniter initiating a temperature-sensitive device ( t2) and/or a smoke sensor (d2), configured to start the electric igniter GOA, connected through conductors to a contact group for external triggering of the electric igniter and the GOA module, as well as a sequentially disconnected temperature-sensitive device (tl) connected to it, configured to controls the shutdown of the automatic phase shutdown mechanism and the neutral wire shutdown mechanism, wherein the input phase “A” and input “zero” N terminals are connected through control conductors to an electric GOA igniter connected to the GOA module, an initiating temperature-sensitive device (t2) and/or a smoke sensor (d2) and a disconnecting temperature-sensitive device (tl), which is additionally connected through conductors to a mechanism for differential and automatic shutdown of phase A and a mechanism for disconnecting the neutral wire N, in the lower part of the housing there are holes for the exit of the aerosol-forming composition, holes for the operation of the initiating temperature-sensitive device (t2 ) and/or a smoke sensor d2 and a shutdown temperature-sensitive device (tl), wherein the thermal igniter is configured to start the GOA module without starting the electric igniter, and the initiating temperature-sensitive device is configured to operate at a temperature (tl) less than the temperature of the shutdown temperature-sensitive device (t2 ) determined by the requirements for the response temperature of the fire extinguishing aerosol generator (FAG).

I. The differential circuit breaker according to claim 10, characterized in that it additionally contains two pairs of phase terminals: phases “B” and “C”, connected to each other and to the mechanism of phase “A” by differential and automatic phase shutdown mechanisms.

12. Differential circuit breaker according to claim 10, characterized in that the aerosol-forming composition is a low-temperature solid fuel composition.

13. Differential circuit breaker according to claim 10, characterized in that the smoke sensor contains a control and power module.

14. The differential circuit breaker according to claim 10, characterized in that it additionally contains a GOA module response sensor connected by conductors to a contact group to generate a GOA module response signal for external devices.

15. Differential circuit breaker according to claim 10, characterized in that the assembly for mounting on a DIN rail is a slot for a DIN rail located on the back side of the device housing, in which a latch is installed for fixing the housing on a DIN rail.

16 Differential circuit breaker according to claim 10, characterized in that it contains a temperature-sensitive device (tl), connected through a contact group and wires to the initiating voltage, capable of operating in the event of a fire in the electrical cabinet and, using an electric igniter, initiating the GOA to extinguish the fire in electrical panel.

17. The differential circuit breaker according to claim 10, characterized in that it contains a trigger sensor for the fire extinguishing aerosol generator (FAG) for generating and outputting a signal to external devices about the fact that the fire extinguishing process has started.

18. Differential circuit breaker according to claim 11, characterized in that the initiation unit is made in the form of a thermal igniter and an electric igniter connected to it, which, in turn, is connected to a triggering temperature-sensitive device (tl).