METHOD AND DEVICE FOR FILLING LIGHT SOURCE WITH MERCURY VAPORS Russian patent published in 2007 - IPC H01J61/28 

FIELD: lighting engineering; production of mercury-vapor light sources and other mercury-vapor filled apparatuses.

SUBSTANCE: proposed method involves heating of liquid mercury to transfer it in vapor state to heated vessel followed by filling surge vessel with mercury vapors, pressure equalizing within vessels, and filling of evacuated light source with mercury vapors. Pressure within both vessels exceeding desired value is reduced by means of pressure controller followed by condensing mercury vapors within condenser and conveying liquid mercury to heated vessel. Mercury droplets condensed on walls of pipeline running to light source and arrested by grid are additionally heated to mercury evaporation temperature followed by their conveying to total flow of dosed mercury vapor. Device implementing proposed method has pressure equalizing vessels of which heated ones are connected in series with mercury vapor condenser and with pressure controller; it also has pipeline shutoff valves of which one is disposed between vessels and other valve, between surge vessel and evacuated light source. Arranged within pipeline between evacuated light source and valve is casing in the form of ring holding rigidly fixed grid made of metal angle pieces disposed for overlapping each other; electric heater is secured on external side of pipeline level with these angle pieces.

EFFECT: enhanced environmental friendliness due to high precision of mercury dosing and reduction of its loss within supply pipeline.

2 cl, 3 dwg