Dishwasher utilizing pump impeller suction for feeding detergent, sanitizing agent and rinse aid in timed sequences
First Claim
1. In a dishwasher:
- (a) a wash/rinse compartment for receiving dishes and having spray arms therein for spraying wash or rinse water onto the dishes;
(b) a tank underlying said compartment for receiving wash or rinse water therefrom;
(c) a motor driven impeller for receiving wash or rinse water from said tank and forcing it through said spray arms and onto the dishes;
(d) a container for holding a liquid detergent;
(e) a valve controlled conduit leading from said container, the conduit having an open end disposed adjacent to the center of said impeller where the greatest suction is created, this suction being the sole means for removing the detergent from said container and delivering it to the area surrounding the impeller where the detergent is mixed with the wash water as it passes from the tank and is forced through said spray arms for washing the dishes; and
(f) means for timing the opening and closing of the valve for delivering the proper volume of detergent into the wash water at the proper time.
3 Assignments
0 Petitions
Accused Products
Abstract
A commercial dishwasher having a wash/rinse compartment for receiving dishes and a tank below the compartment for receiving wash or rinse water after a motor driven impeller has circulated the water from the tank and has forced it through spray arms in the compartment employs the suction created by the impeller for removing a detergent from a container in timed sequence by an entraining action during the wash cycle and mixing the detergent with the wash water during the dishwashing cycle. This same suction created by the impeller is employed for simultaneously removing a sanitizing liquid from a container and a rinse aid liquid from another container and mixing these two liquids with a rinse water during the rinsing and sterilizing cycle in timed sequence.
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Citations
4 Claims
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1. In a dishwasher:
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(a) a wash/rinse compartment for receiving dishes and having spray arms therein for spraying wash or rinse water onto the dishes; (b) a tank underlying said compartment for receiving wash or rinse water therefrom; (c) a motor driven impeller for receiving wash or rinse water from said tank and forcing it through said spray arms and onto the dishes; (d) a container for holding a liquid detergent; (e) a valve controlled conduit leading from said container, the conduit having an open end disposed adjacent to the center of said impeller where the greatest suction is created, this suction being the sole means for removing the detergent from said container and delivering it to the area surrounding the impeller where the detergent is mixed with the wash water as it passes from the tank and is forced through said spray arms for washing the dishes; and (f) means for timing the opening and closing of the valve for delivering the proper volume of detergent into the wash water at the proper time. - View Dependent Claims (2, 3, 4)
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Specification