A fluid dispenser nozzle comprising a valve
Publication Date: 2012-Aug-08
The IP.com Prior Art Database
Page 01 of 2
A fluid dispenser nozzle comprising a valve.
Disclosed are different valves that are useful in pressure atomizing nozzles.
All the valves are constructed such that fluid can pass the valves only after reaching a certain desired pressure but, immediately after the conveying pressure drops below a predetermined value, fluid can no longer pass the valves.
The valve might be a drip preventing valve adapted to be installed into a conduit between the discharge outlet of an oil burner pump and a nozzle outlet hole. The valve responds to the pressure in that conduit and closes whenever the pump stops, thereby preventing leakage or dripping from the nozzle.
In a first not disclosed solution the valves consist of a body of one or more closed flexible-walled cells filed with air at atmospheric pressure. When the valve body is subjected to a larger pressure, it is compressed thereby opening the valve. When the larger pressure is relieved, the valve closes.
In a second solution the valve comprises a valve body that is lifted, tilted or pressed away and leaves an opening for the fluid. The valve is only lifted, tilted or pressed away when the fluid has reached a certain desired pressure. The fluid passes the open valve and flows to the outside of the nozzle cone.
In a third solution the valve comprises an O-ring. The O-ring is pressed away and leaves an opening when the fluid is subjected to a larger pressure than a pre-defined pressure level. The fluid passes the open valve...