Control mechanisms for fire suppression systems
A control mechanism includes an actuator having first and second positions, a resilient member arranged to bias the actuator toward the second position, and an input cable. The input cable is arranged along a serpentine path and is connected to the actuator, the input cable arranged to retain the actuator in the first position using tension applied by a plurality of detector cables along the serpentine path of the input cable. Fire detector connector modules, fire suppression systems, and methods of integrating detector cables into control mechanisms are also described.
1. A control mechanism, comprising:
an actuator having first and second positions;
a resilient member arranged to bias the actuator toward the second position; and
an input cable arranged along a serpentine path and connected to the actuator,
wherein the input cable is arranged to retain the actuator in the first position using tension, applied by a plurality of detector cables along the serpentine path of the input cable, and communicated to the actuator by the input cable;
a housing and a plurality of detector cables, wherein the serpentine path extends within the housing, wherein the plurality of detector cables extend through the housing and connect to the input cable within the housing; and
a first end of the input cable is fixed to a fixation location arranged within the housing.
2. The control mechanism as recited in claim 1 , wherein the actuator is pivotally fixed within the housing and the input cable connects to the actuator within the housing.
3. The control mechanism as recited in claim 1 , wherein the actuator is pivotally fixed outside of the housing, wherein the input cable extends through the housing and connects to the actuator outside of the housing.
4. The control mechanism as recited in claim 1 , wherein the actuator includes a lever arm.
5. The control mechanism as recited in claim 1 , wherein the actuator includes a single lever arm.
6. The control mechanism as recited in claim 1 , further comprising a plurality of cable guides arranged along the serpentine path of the input cable.
7. The control mechanism as recited in claim 6 , further comprising a detector cable connected to the input cable between a first and a second of the cable guides.
8. The control mechanism as recited in claim 6 , wherein no detector cables connect to the input cable between a first and a second of the cable guides.
9. The control mechanism a recited in claim 1 , further comprising a tensioner fixed to the actuator and coupling the input cable to the actuator.
10. The control mechanism as recited in claim 1 , further comprising a system cartridge connected to a valve by an actuation conduit and a poppet valve, wherein the actuator is operatively connected to the poppet valve to retain compressed gas within the system cartridge in the first position and to issue the compressed gas from the system cartridge to the valve through the actuation conduit in the second position.
11. The control mechanism as recited in claim 1 , wherein the input cable is arranged to allow the actuator to move to the second position upon release of the tension communicated by the input cable within the housing.
12. A module for integrating detector cables into a control mechanism, comprising:
an input cable arranged for connection between an actuator and a fixation location;
a plurality of cable guides arranged to retain the input cable along a serpentine path;
a plurality of couplers arranged to couple two or more detector cables to the input cable along the serpentine length of the input cable; and
a housing with the fixation location and at least three apertures, wherein an end of the input cable is connected to the fixation location, wherein the serpentine path spans at least two of the apertures, and wherein a first and a second of the plurality of cable guides are arranged on opposite sides of a first of the apertures along the serpentine path.
13. A fire suppression system, comprising:
a suppressant reservoir;
a suppressant valve in fluid communication with the suppressant reservoir; and
a control mechanism operably connected to the suppressant valve, including:
an actuator having first and second positions;
a resilient member arranged to bias the actuator toward the second position; and
an input cable arranged along a serpentine path and connected to the actuator, the input cable arranged to retain the actuator in the first position using tension, applied by a plurality of detector cables along the serpentine path, and communicated to the actuator by the input cable to issue suppressant from the suppressant reservoir to a protected space when the actuator moves from the first position to the second position; and
a housing, a plurality of detector cables, and a plurality of cable guides, the input cable arranged within the housing, the cable guides fixed within the housing along the serpentine path, and detector cables coupled to the input cable along the serpentine path.
14. A method of integrating detector cables into a control mechanism, comprising:
providing a housing;
connecting an input cable to a fixation location within the housing and an actuator having first and second positions;
biasing the actuator toward the second position using a resilient member; and
connecting a plurality of detector cables to the input cable along serpentine path, each of the detector cables applying tension to the input cable to retain the actuator in the first position.
15. The method of making a fire suppression system as recited in claim 14 , further comprising retaining the actuator in the first position using tension communicated by the input cable to the actuator.
16. The method of making a first suppression system as recited in claim 14 , further comprising allowing the actuator to move to the second position by reducing tension communicated to the actuator by the input cable.