Control station and method for actuating two extinguishing agent supply devices

Patent metadata

Field	Value
Publication number	US-2016332012-A1
Application number	US-201515111979-A
Country	US
Kind code	A1
Filing date	Jan 12, 2015
Priority date	Jan 17, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A fire detection and/or extinguishing control station for actuating two extinguishing agent supply devices using a control unit. After actuating a first extinguishing agent supply device ( 17 ) upon detection of a first fire signal at time (t 1 ), the control station is additionally equipped to actuate a second extinguishing agent supply device ( 18 ) upon detection of a second fire signal at time (t 2 ) if the control station has checked whether the time (t 2 ) fulfills the inequality (t 1 +t c )<t 2 <(t 1 +t b ), where (t c ) represents a discharge time of the complete or partial discharge of at least one extinguishing agent container ( 1 ) of the first extinguishing agent supply device ( 17 ), (t k ) represents a check time connected to the discharge time (t c ), and (t b ) represents a monitoring time period, and the monitoring time period (t b ) is the sum of the discharge time (t c ) and the check time (t k ) beginning at time (t 1 ).

First claim

1 . A system for actuating two extinguishing agent supply devices by a control unit ( 24 ), wherein the control unit ( 24 ) is configured to actuate a second extinguishing agent supply device ( 18 ) when a second fire signal is detected at the time t 2 after actuating a first extinguishing agent supply device ( 17 ) when a first fire signal is detected at the time t 1 , if the control unit has examined whether the inequality (t 1 +t c )<t 2 <(t 1 +t b ) is satisfied at the time t 2 , where t c represents a discharge time for complete or partial discharge of at least one extinguishing agent container ( 1 ) of the first extinguishing agent supply device ( 17 ), t k represents a checking time following the discharge time t c and t b represents a monitoring duration, and wherein the monitoring duration t b is the sum of the discharge time t c and the checking time t k , starting from the time t 1 .

2 . The system according to claim 1 , wherein programming stored in a signal processing unit ( 25 ) of the control unit has a test module, which generates a signal for actuating the second extinguishing agent supply device when the second fire signal is detected at the time t 2 , if the test module determines that the time t 2 satisfies the inequality (t 1 +t c )<t 2 <(t 1 +t b ).

3 . The system according to claim 1 , further comprising a programming interface which is embodied and configured in such a way that the discharge time t c , the checking time t k and the monitoring duration t b are stored in the memory by way of the programming interface using a programming means.

4 . The system according to claim 3 , wherein the programming means includes one of a personal computer, a tablet computer, a notebook, a smartphone or a service or programming tool.

5 . The system according to claim 1 , further comprising a display and operating unit ( 26 ) configured in such a way that the discharge time t c , the checking time t k and the monitoring duration t b parameters can be entered and/or modified, additionally or exclusively, by way of operating elements of the display and operating unit.

6 . The system according to claim 1 , further comprising a separation apparatus ( 8 ), wherein prior to actuating the first extinguishing agent supply device ( 17 ), the system actuates the separation apparatus ( 8 ) for the purposes of generating a primary switch position of the separation apparatus ( 8 ) which releases the transport path of a first extinguishing fluid in the direction of a common pipe ( 9 ) and an at least one nozzle ( 10 ) and completely blocks the transport path of a second extinguishing fluid from the second extinguishing agent supply device ( 18 ) in the direction of the common pipe ( 9 ) and the at least one nozzle ( 10 ).

7 . The system according to claim 6 , wherein the control unit is configured in such a way that, if it detects the second fire signal at the time t 2 , it actuates the separation apparatus ( 8 ), prior to actuating the second extinguishing agent supply device ( 18 ), for the purposes of generating a secondary switch position of the separation apparatus ( 8 ) which releases the transport path of the second extinguishing fluid in the direction of the common pipe ( 9 ) and the nozzles ( 10 ) and completely blocks the transport path of the first extinguishing fluid from the first extinguishing agent supply device ( 17 ) in the direction of the common pipe ( 9 ) and the nozzles ( 10 ).

8 . The system according to claim 1 , wherein the control unit is embodied to switch off, at the time t 1 or after a predetermined delay t a following time t 1 a power supply of a machine, system or device to be extinguished.

9 . The system according to claim 1 , wherein the control unit is embodied to forward all switch and operating states to predefined reception devices, in particular building management systems.

10 . The system according to claim 1 , further comprising a signal-conducting connection to extinguishing fluid parameter detection means ( 28 ) for detecting extinguishing fluid parameters of the first extinguishing agent supply device ( 17 ) and the control unit is furthermore embodied to calculate the discharge time t c at a time t m >t 1 on the basis of the extinguishing fluid parameters.

11 . The system according to claim 10 , wherein at least one of the following are detected as extinguishing fluid parameters:
pressure and/or temperature in the extinguishing agent container, flow rate of the extinguishing fluid in conjunction with the detected duration of discharge of the extinguishing fluid after the time t 1 , or mass difference in the extinguishing fluid prior to, or at, the time t 1 and at the time t m , or a combination therefrom.

12 . A method for controlling two extinguishing agent supply devices, comprising the following method steps being carried out in succession:
detecting a first fire signal at the time t 1 , actuating a first extinguishing agent supply device ( 17 ), detecting a second fire signal at the time t 2 , actuating a second extinguishing agent supply device ( 18 ) after the time t 2 satisfies the inequality (t 1 +t c )<t 2 <(t 1 +t b ), where t c represents a discharge time for complete or partial discharge of at least one extinguishing agent container ( 1 ) of the first extinguishing agent supply device ( 17 ), t k represents a checking time following the discharge time t c and t b represents a monitoring duration, and wherein the monitoring duration t b is the sum of the discharge time t c and the checking time t k , starting from the time t 1 .

13 . The method as claimed in claim 12 , wherein the discharge time t c is predetermined as a stored parameter or it is calculated at the time t m >t 1 .

14 . The method as claimed in claim 13 , wherein the discharge time t c is calculated on the basis of extinguishing fluid parameters of the first extinguishing agent supply device, detected by means of extinguishing fluid parameter detection means ( 28 ).

15 . The method as claimed in claim 14 , furthermore characterized by the following method steps: detecting the extinguishing fluid parameters by way of a signal-conducting connection with the extinguishing fluid parameter detection means and storing the extinguishing fluid parameters.

16 . The method as claimed in claim 15 , wherein the extinguishing fluid parameters represent at least one of
pressure and/or temperature in the extinguishing agent container, flow rate of the extinguishing fluid in conjunction with the detected duration of discharge of the extinguishing fluid after the time t 1 , or mass difference in the extinguishing fluid prior to, or at, the time t 1 and at the time t m , or a combination thereof.

17 . The method as claimed in claim 12 , wherein there is actuation of a separation apparatus ( 8 ), prior to actuating the first extinguishing agent supply device ( 17 ), for the purposes of generating a primary switch position of the separation apparatus ( 8 ) which releases the transport path of the first extinguishing fluid in the direction of a common pipe ( 9 ) and an at least one nozzle ( 10 ) and completely blocks the transport path of the second extinguishing fluid from the second extinguishing agent supply device ( 18 ) in the direction of the common pipe ( 9 ) and the at least one nozzle ( 10 ).

18 . The system according to claim 6 , wherein the first extinguishing fluid is a liquid synthetic extinguishing agent and the second extinguishing fluid is one of water or a water based extinguishing agent.

Assignees

• Minimax Gmbh & Co Kg

Inventors

• Lenkeit Kurt
• Habitzl Wolfgang
• Boeke Joachim
• Bechtloff Volker

Classifications

• G08B17/00

  Fire alarms; Alarms responsive to explosion · CPC title

• A62C37/44

  only the sensor being in the danger zone · CPC title

• A62C99/0018

  using gases or vapours that do not support combustion, e.g. steam, carbon dioxide · CPC title

• A62C37/36

  an actuating signal being generated by a sensor separate from an outlet device · CPC title

• A62C35/11

  controlled by a signal from the danger zone · CPC title