CONTINUOUS ULTRAPURE STEAM GENERATOR

摘要

A generator of ultrapure steam and a corresponding steam generating method uses a heated, fritted refractory glass plate as a water-to-steam interface dividing a first chamber, with water on one side of the plate and steam on the other. Water is continuously injected into interstices of the plate, held fixed in the chamber, where the water evaporates and migrates upwardly to where a steam cloud is formed that exits the chamber and into a second chamber that is a saturation housing where an air stream removes steam from the exit, preventing steam condensation, and delivering a steam jet out of the housing through a port.

主权项

1. A steam generator comprising:
a chamber made of steam inert material having a water input sleeve, a steam exhaust sleeve and a plenum therebetween, with an outer chamber wall and an inner chamber wall; a heated porous refractory glass member dividing the plenum into a lower chamber region and an upper chamber region; an electrical heater coil surrounding a portion of the outer chamber wall of the plenum in heat transfer relation with the porous refractory glass member to steam forming temperatures within the porous glass member; a ceramic jacket surrounding the electrical heater coil and the outer chamber wall in a heat insulative manner, with a dead space separating the coil from the jacket thereby reducing heat transfer from the coil to the jacket; an injector feeding purified water through the chamber water input sleeve into the heated porous refractory glass member whereupon the chamber exhaust sleeve vents steam from the porous member; and a hollow saturation housing having a pressurized air input port, a steam delivery port and an intermediate aperture connected to the chamber steam exhaust sleeve for receiving steam into the saturation housing; whereby steam from the chamber steam exhaust sleeve is mixed with air from the pressurized air input port for air saturation with steam and pressurized egress via the housing steam delivery port.