Open washing cycle dishwashing machine
OwnerDall'Oglio Erminioinventor
Life of this patent
Estimating the term…
Abstract
A dishwashing machine comprises a washing tank closed by a lid and containing a removable utensils basket, and also comprising rotary spray arms with nozzles, which arms are mounted rotatably within the washing tank and fed by a hydraulic circuit. The washing tank has an open discharge port on its base and the fluid circuit comprises a delivery line for water under pressure which empties into a mixing chamber connected by tubes to the spray arms. The delivery line of at least one pump aspirating from a washing additive reservoir also empties into the mixing chamber.
Claims8
In a dishwashing machine having a washing tank for holding a removable basket for receiving articles to be washed, a lid for the tank, at least one rotary spray arm rotatably mounted on an interior wall of the tank and having nozzles for spraying wash or rinse water onto the articles, and an outlet in the base of the tank for continuously discharging spent water to waste, the improvement comprising a mixing chamber having an outlet communicating with said spray arm nozzles and an inlet for connection to a supply of water under pressure, a valve for controlling the flow of water to the mixing chamber, a plurality of reservoirs for holding additives to be mixed with said water, a separate manually-operated, spring biased positive displacement pump for each reservoir, each pump having an inlet communicating with a reservoir and an outlet communicating with said mixing chamber, whereby the additives can be selectively introduced into the mixing chamber upon actuation of a pump to mix them with the water prior to being fed to the spray arm.
Dependencies are inferred from the claim text.