SU1455351A1 - Fire alarm and protection arrangement - Google Patents

Abstract

This invention relates to automatic fire alarm and protection means and can be used primarily to protect closed non-ventilated volumes. The aim of the invention is to expand the functionality of the device by controlling the process of extinguishing a fire while protecting non-ventilated volume. The operation of a jointly or separately differential temperature sensor and a smoke sensor triggers the start of a temporary shaping device, so that the signal at the output of the majority element AND realizing the function 2 of 3 appears both in the case of simultaneous activation of the above sensors and them for a time greater than the timer. This starts the pulse distributor, which immediately turns on the alarm and the fire suppression devices. The signal from the fire extinguishing substance exit sensor zeroed the timer, so that the signal at the output of the majority element I, and therefore the continuation of the pulse distributor, will be only when the differential temperature sensor and the smoke sensor are on. 1 il. (L

Description

1 The invention relates to means of automatic fire alarm and fire protection and can be used to protect predominantly closed non-ventilated volumes.

The aim of the invention is to enhance the functionality of the device by controlling the process of extinguishing a fire while protecting a non-ventilated object.

The drawing shows a functional diagram of a device for fire alarm and protection.

The device contains a differential temperature sensor 1, a sensor 2

smoke, timer 3, major element I 4, sensor 5 for extinguishing a fire extinguishing agent, distributor 6 pulses, executive elements 7, signal element 8,

The device works as follows.

When a fire occurs in a controlled closed volume, sensors 1 and 2 are triggered. In this case, the signal goes to the start-up inputs of timer 3, at the output of which the signal appears, for example, after 30 s. If both sensors 1 and 2 worked, the signal

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steps on the corresponding inputs of the AND 4 major element, which implements the logical function 2 of 3, which results in the appearance of a signal on its | code and start of the 6-distributor 6 of the switch, including in its first Mij output one actuator 7 which includes job mediation | fire extinguishing (not shown). One time the signal element 8 is temporarily turned on, indicating that the Fatty situation has occurred.

If for some reason only one of the sensors 15 15 2 fails, then before the timer 3 triggered, the drive at the output of the majority element 4 is absent. If the signal from

The backup fire extinguishing equipment will be saved only if the sensors 1 and 2 are activated simultaneously. Switching off (or not switching on) one of them after extinguishing the fire extinguishes the fire is eliminated and eliminates the aimless use of fire extinguishing equipment.

Claims (1)

Invention Formula A fire alarm and protection device comprising a temperature sensor and a smoke sensor connected to the first and second inputs of the logic unit, the actuator connected in parallel and the signal element DG m "tg it’s less time consuming secret 3, the device does not work, as a short signal from one of the iT4HKOB is a disturbance. If the signal from one triggered sensor I And 2 lasts longer Hi and t; 1ymera 3, for example, more than 30 s, then when it is triggered, the signals at i-L1 || are at two inputs of the majority sjtieMeHTa. And 4, which leads to the launch of the distributor of b pulses, the issuance of a signal and the beginning of extinguishing the fire. Thus, the signaling and switching on of Hijie fire extinguishing agents is provided both with simultaneous switching on of HiftH sensors 1 and 2, as well as with prolonged (more time delay T & 3) of one of sensors 1 or 2 At the moment of extinguishing of the extinguishing substance, the sensor 5 triggers, which zeroed timer 3, therefore the signal on the code of the AND 4 major element allows the operation of the distributor 6 pulses and, thus, turns on different so that, in order to expand the functionality of the device by monitoring the process of extinguishing a fire while protecting an unvented object, a timer, an exit sensor for the fire extinguishing substance, an impulse distributor, and additional actuators, a temperature sensor are made differential, a log1-ga block is complete in the form of the major element And, the outputs of the temperature sensor and the smoke sensor are connected to the trigger inputs of the timer, the output of which is connected to the third input of the majority element And, you od which is connected to the input of the pulse distributor, .First output of which is connected to the inputs of the actuating element and the signaling element, the second vkod - an additional actuating element, the sensor output extinguishing substance present is connected to a zeroed yuschemu Valid Timer. Compiled by L. Lipetsky Editor E. Kopcha Tekhred M. Khodanich Proofreader S. Cherni Order 7456/55 Circulation 518 VNIISH State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 Subscription