초록 ▼

An apparatus that prevents an undesirable chemical reaction between different liquid chemical streams in a dispenser comprising a dispenser having a common manifold leading to a use locus. The common manifold has a pumping station directed to the common manifold and the pumping station has at least

An apparatus that prevents an undesirable chemical reaction between different liquid chemical streams in a dispenser comprising a dispenser having a common manifold leading to a use locus. The common manifold has a pumping station directed to the common manifold and the pumping station has at least two chemical input lines. The dispenser is controlled by an electromechanical controller that prevents pumping two liquid chemical streams in sequence without an intervening water flush and prevents pumping two liquid chemical streams simultaneously. The liquid inputs to the pumping station are keyed such that the inputs can be connected only to containers that fit the keyed inputs.

대표청구항 ▼

1. A dispenser apparatus that can provide two or more liquid chemical streams to a use locus, said chemical streams comprising incompatible streams such that upon mixing of the streams can result in the production of an undesirable reaction by-product, the dispenser comprising:(a) a common manifold

1. A dispenser apparatus that can provide two or more liquid chemical streams to a use locus, said chemical streams comprising incompatible streams such that upon mixing of the streams can result in the production of an undesirable reaction by-product, the dispenser comprising:(a) a common manifold equipped with a fluid inlet, said manifold leading to an outlet connected to a use locus; (b) a pumping station in liquid communication with the fluid inlet; (c) at least two liquid inputs to the pumping station, wherein: (i) the at least two liquid inputs each comprise a coupling that can fit only a reservoir for an appropriate liquid chemical for that liquid input; (ii) each coupling comprising an inner probe and an outer probe, wherein the inner probe and the outer probe are constructed to rotate relative to each other; and (d) an electromechanical controller that prevents the dispenser from simultaneously pumping different chemical streams to the manifold and prevents pumping a liquid chemical into the manifold without an intermediate liquid flush to remove residue of an incompatible liquid chemical.