CAN COST LESS THAN $3000
IF DO-IT-YOURSELF PROJECT.
PATENT PENDING
The Spray Hose (US 9,561,393, Shoap) can protect a home from wildfire. Many homes are ignited by blowing embers. The Spray Hose creates a high wall of water that can help prevent embers from igniting fires on and around the home.When a fire is approaching a home, the homeowner should evacuate. If the homeowner starts a spray system before leaving, the water supply will probably be depleted before the fire arrives. Water sprayed before the fire arrives has some value in wetting the ground and the walls of the home. However, the water may dry up before the fire arrives.
The system shown in the FIG 1 is a low cost method of automatically starting the spray system when the fire arrives. This system allows the homeowner to quickly arm the system and then evacuate.The system uses a gasoline pump with a hand pulled starter because of its low cost. When ordered to evacuate, the homeowner puts the choke in the start position and pulls the starter cord. Once the engine starts, the choke is moved to the run position. The throttle is moved from the start position to the highest speed position.
There are pumps that can be remotely started, but they are very expensive. If the pump is fueled by gasoline, the automatic adjustment of the choke and throttle must be done by a computer chip and small motors.
Diesel pumps do not need a choke and can be more easily auto-started, but they are expensive.
FIG 1 shows the components of the Low Cost Automatic Spray System.
A water tank supplies water to a gasoline pump which delivers water to an electric 2-Port Valve, and also back to the water tank through a Pressure Relief Valve. The 2-Port Valve can direct water to a Spray Hose. The electric 2-Port Valve is controlled by thermistors or other low cost fire detectors that are placed on the outer walls of the home. A thermistor changes its electrical resistance when the temperature changes.
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