Accelerator Foam Generating Device

摘要

An air and water/soap concentrate mixing device which creates high quality compressed air foam without restricting the flow of liquid through the apparatus. The device consists of three water/soap concentrate chambers, an air manifold and a central air diffuser tube. Water/soap concentrate flow is increased through the device from the entry chamber (first) thru the acceleration (second) chambers. Upon entering the deceleration (third) chamber, the water/soap concentrate perimeter is laced with pressurized air from the air manifold wrapping the acceleration chamber. At the same time, pressurized air is also diffused and embedded in the center of the water/soap concentrate flow via the air diffuser tube. As the accelerated water/soap concentrate enters the deceleration chamber, the flow is dramatically decreased. This slowing of the water/soap concentrate and the introduction of pressurized air causes a pressure volatility and turbulence inside the deceleration chamber allowing the pressures of the water/soap concentrate and air to equalize and mix creating foam bubbles. The device is also capable of flowing plain water or water/soap concentrate through the device if the pressurized air system or soap injection system is deactivated.

主权项

1. A device for creating compressed air foam (CAF), comprising of:
a. A large cross-sectional area water/soap concentrate entry chamber
i. A valve to control water/soap concentrate flow and regulate pressure from the source into the entry chamber b. An acceleration chamber with rapidly decreasing cross-sectional area immediately following the large cross-sectional area entry chamber c. A deceleration chamber with instant change from the small cross-sectional area outlet of the acceleration chamber to large cross-sectional area
i. The small inlet at the deceleration chamber entrance is sized so as not to limit maximum flow through the device from the water pressure sourceii. The large cross-sectional area of the deceleration chamber is equal to or larger than the cross-sectional area of the entry chamber d. An air manifold which wraps around the acceleration chamber
i. An air inlet with regulated pressurized source on the exterior of the manifoldii. Multiple air apertures positioned around the manifold into the deceleration chamber, directed into the water/soap concentrate flow
1. Apertures are aligned at a sharp angle to intercept the entire outer perimeter of the water/soap concentrate flow where the water/soap concentrate enters the deceleration chamber2. Aperture number and size is dependent on the maximum volumetric capacity of the pressurized air from the source e. An air diffuser tube in the center of the acceleration chamber
i. An air inlet with regulated pressurized source attached to the tube on the exterior of the deviceii. A tube which extends into the deceleration chamber with an end flange to cause turbulence in the center of the flow column of water/soap concentrateiii. A tube with apertures near the end flange that exit outwards into the center of water/soap concentrate flowiv. A tube with an aperture exit at the center beyond the end flange directed in the same direction as water/soap concentrate flowv. A tube with an end flange which creates areas of vacuum near air aperture exits to cause a swirling mixing action of the water/soap concentrate flow and air f. Pressurized air source inlets are of equal size at both the manifold wrapped around the acceleration chamber and central air diffuser tube g. The cross-sectional shape of the device chambers is not limited to a circle but may be an oval, square, rectangle, etc. as is determined best for the application h. No moving parts