Vapor generating and recovering apparatus including vapor condenser control means

Claim 1

In a vapor generating and recovering apparatus for separating and recovering one component from a second component of a liquid solution having a housing including at least one chamber therein for vaporizing a first component from a liquid solution containing at least two components therein and a second chamber for recovering the vapor in the form of a liquid; heat emitting means disposed in heat emitting relation with said first chamber; heat absorbing means disposed in heat absorbing relation with said second chamber and around the periphery of said housing at a preselected distance above said chambers; the improvement which comprises: a weir of preselected height disposed between and separating said first chamber from said second chamber, a first temperature sensing device disposed within said second chamber at a preselected position at approximately the same vertical position as the top of said weir, and said heat absorbing means including coils with a heat transfer fluid therein and a flow control means, said coils disposed along the wall opposed to said weir, said temperature sensing device being disposed within the area enveloped by said coils, said flow control means is regulated in response to said first temperature sensing device; and, a second thermostatic sensing device spaced above said first thermostatic sensing device, said second thermostatic sensing device being in eletrical communication with said heat emitting means deactivating said heat emitting means at a preselected temperature.