COMPACT COOLING AND EXTINGUISHING SYSTEM

Abstract

The compact cooling and extinguishing system is designed to be arranged in a protected device, in particular electrical switchboards with a DIN rail, wherein the compact automatic cooling and extinguishing system consists of a carrier (14) containing inside a pressurized cooling and extinguishing medium, wherein the medium is based on chemical extinguishing agents, which are characterized in that during initiation their temperature, when escaping the carrier, is in negative values, i.e. temperature below 0° C., below the freezing reference point, the system is further provided with a pressure indicator for monitoring the condition of the cooling and extinguishing medium, wherein the compact cooling and extinguishing system is further provided with a first temperature, pressure or smoke switch (15) and a valve (5), which is connected to the carrier of the cooling and extinguishing medium by connection (18), wherein the valve is further provided with a nozzle (6) for release of the cooling and extinguishing medium into the space of the protected device and the valve (6) is further connected to the relay (7). The system is provided with an external power supply (13). The first switch (4) is set to open the valve (5) when the given temperature value is reached in the protected device. In a preferred embodiment, the compact cooling and extinguishing system is provided with a compact cover (2) for mounting on a DIN rail.

Claims

1. A compact cooling and extinguishing system (1) designed to be arranged in a protected device, the compact cooling and extinguishing system (1) comprising: a carrier containing inside a pressurized cooling and extinguishing medium including an indicator for monitoring the condition of the cooling and extinguishing medium, a battery (3) which is connected to a first pressure, temperature or smoke switch (4), which is connected to a valve (5) wherein the valve (5) is mechanically connected to a carrier (14) by a connection (18), wherein the valve (5) is further provided with a nozzle (6) and the valve (5) is further connected to a relay (7), which is connected to a RCD (21) of a protected device, wherein the compact cooling and extinguishing system (1) is further provided with a compact cover (2) for mounting on a DIN rail.

2. with a safety switch (8) The compact cooling and extinguishing system as set forth in claim 1, including a second switch/sensor (16).

3. The compact cooling and extinguishing system as set forth in claim 1, including a carrier (14) of the cooling and extinguishing medium is made of metal or plastic or alloy or fiber or glass.

4. The compact cooling and extinguishing system as set forth in claim 1, including a safety switch (8).

5. The compact cooling and extinguishing system as set forth in claim 1, including an external switch (12).

6. The compact cooling and extinguishing system as set forth in claim 1, including an external power supply (13).

7. The compact cooling and extinguishing system as set forth in claim 1, including a fuse (17).

Description

CLARIFICATION OF DRAWINGS

[0025] The invention is further clarified on the attached drawings, where

[0026] FIG. 1 illustrates schematically the compact cooling and extinguishing system and

[0027] FIG. 2 illustrates schematically the connection of the compact cooling and extinguishing system in the electrical switchboard.

EXAMPLE EMBODIMENT OF THE INVENTION

[0028] The schematic in FIG. 1 shows the compact cooling and extinguishing system connected with a battery 3, to which the first switch 4 and coils for the valve 5 and relay 7 are connected. If the temperature in the protected device rises to the value at which the first switch 4 is set, the switch closes. This opens the nozzle 6 of valve 5 and closes the relay 7 contact at the same time. The cooling and extinguishing medium enters the protected device—electrical switchboard—through the nozzle 6, and at the same time, closing the contact of relay 7 brings a pulse to, for example, the RCD 21 of the protected device which is connected to the cooling and extinguishing system. Preferably, an external switch 12 that may also trigger the initiation may be connected to the cooling and extinguishing system.

[0029] Furthermore, the system is connected to an external power supply 13. The compact cooling and extinguishing system contains a safety switch 8, fuse 17. The safety switch 8 is preferably wired so that in the event of a failure of battery 3, switch 4 or the valve 6, when the set temperature of the safety switch 8 is reached, the RCD 21 of the protected device—electrical switchboard—is disconnected.

[0030] The pressure indicator 15 allows determining visually the condition of the extinguishing medium. The first switch 4 may be preferably routed outside the compact cooling and extinguishing system, and connected to the electronic fire signaling system or other alarm systems. The carrier 14 of the cooling and extinguishing medium is directly mechanically linked to the valve 5. Thy system contains a fuse 17 in the form of plastic plug. If all electronic elements fail, the high temperatures cause burn-through this plastic plug 17, the pressurized cooling and extinguishing medium is released, thus cooling and extinguishing the fire. Another fuse is in the form of a rubber seal, which also releases the cooling and extinguishing medium into the protected device due to high temperatures.

[0031] FIG. 2 illustrates schematically the wiring of the compact cooling and extinguishing system in an electrical switchboard 19 and its connection to the RCD 21, connected to the mains lead 20 and other circuit breakers 22.

[0032] The advantage of the system is in the connection of the compact cooling and extinguishing system with a RCD 21, which prevents further development of fire and smoke through disconnection of the power. Preferably, also an external switch 12 and external power supply 13 may be connected. Its compact size allows for its direct installation on a DIN rail. The installation of the RCB 21 is mandatory for all new or refurbished electrical switchboards, pursuant to the relevant standards. Any analog or digital thermostat, which is factory-set to temperatures from 30 to 150° C., may also be integrated into the system, also with the possibility of control. This extends the possibilities of deployment also to electrical switchboards 19 in refrigerated, air-conditioned or tropical climate environments.

Industrial Use

[0033] The design of the compact cooling and extinguishing system according to the invention can be used for monitoring and suppression of undesirable thermal effects occurring in technical and technological devices, in particular in electrical switchboards, whereby the system has the ability to both cool the protected device and extinguish any fire occurring in such devices when critical limits are exceeded.