Under counter dispenser
View Patent ↗A dispenser for liquid consumables locates a store of the particular liquid at a location remote from the dispensing location. The dispensing location is typically located above a counter and may include a relatively narrow stem that brings a flexible liquid delivery tube up to a valve. Valuable counter space is conserved. One or more disposable, flexible and collapsible bags contain the store of liquid and communicates with the dispensing location via the liquid delivery tube. Confined in contact with each flexible bag is an inflatable bladder to which compressed air is routed. Liquid is dispensed each time the valve opens. When exhausted the flexible bag is replaced. Safety interlock switches vent the inflatable bladder to prevent its expanding explosively upon opening of the location where the liquid containing bag will replace the empty. Where the liquid needs temperature control, temperature control means are provided where the liquid is stored. Air movement from that location into the stem to a dispensing fountainhead controls the temperature of the liquid in the delivery tube. In the dispensing of dairy product, as in cream for coffee, temperature control is refrigeration. The dairy product is cooled over its entire route from the flexible bag to the fountainhead. The location of the collapsible, flexible bag and expansible bladder may be directly below the stem and fountainhead in a cabinet, and the entire unit may be movable from one location to another. When consistency of liquid amount dispensed is needed, a dosing valve meters out a measured amount.
1. A dispenser for non-carbonated consumable liquids compnsing:
(a) a compartment for receiving a flexible, at least partially collapsible container of consumable liquid, in a container receiving location therein below a counter,
(b) a compressed gas activated pressure applicator secured at a location contiguous to the container receiving location and adapted to apply container-collapsing pressure to the container in the container receiving location,
(c) a liquid dispensing location above the counter,
(d) a consumable liquid flow channel for routing at least one removable, flexible consumable liquid delivery tube from a container in the below-counter container receiving location to the above-counter liquid dispensing location and thereby defining a liquid flow path communicating between the container receiving location and the liquid dispensing location,
(e) a consumable liquid control dose regulating valve operatively connected to contact the exterior of the liquid delivery tube to open and close the flow path and control the dispensing of consumable liquid at the liquid dispensing location; and
(f) the dose regulating valve comprising a slide slidably received in a housing, a biasing element urging the slide away from a dispensing position to a home position in the housing at which the slide defines, with the housing, a chamber, a liquid inlet opening into the chamber through the housing, connected, in use, to the container of consumable liquid via the flow channel, a liquid dispensing opening in the housing closed by the slide when the slide is in the home position, and a liquid path formed in a portion of the slide, the liquid path extending from an opening into the chamber to an opening movable into alignment with the liquid dispensing opening when the slide is moved against a force of the biasing element to the dispensing position.
2. The dispenser according to claim 1 , wherein the liquid inlet opening of the dose dispensing valve is located to be blocked by the slide as the slide is moved against the force of the biasing element to the dispensing position and the valve further comprising an air escape passage opening from the chamber to atmosphere affording air escape from the chamber as the chamber fills with liquid and air introduction into the chamber when liquid is dispensed from the chamber and the slide moves back toward its home position.