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US 4,366,005 AGranted
Steam washing in a dishwasher
AssigneeSharp Kabushiki Kaisha
InventorsIchiro Oguri, Yoshihiro Koyama
Life of this patent
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Abstract
Soil, including starch deposits, are removed from tableware in a dishwasher by a preliminary wash with cool water at approximately 20.degree. C., followed by a steaming operation and then a washing operation with water containing a cleaning agent. A portion of the water to be used in the washing operation is preheated during the steaming operation.
Claims11
A dishwashing method for washing tableware disposed within a dishwasher comprising the steps of:
- preliminarily washing tableware disposed in said dishwasher with cool water having a temperature of approximately 20.degree. C. to initially rinse the surfaces of the tableware for removing particles and substances adhering to the tableware;
- applying steam to said tableware after completion of said preliminary washing step and simultaneously preheating water for later use, said steam being applied for a predetermined time interval for removing particles and substances, including starch, adhering to the tableware;
- washing said tableware after completion of said steam washing step for an additional time period to substantially remove remaining particles by contacting said tableware with said preheated water and a predetermined quantity of additional water, said wash water containing a cleaning agent;
- rinsing said tableware for a predetermined time period;
- and
- drying said tableware for a predetermined time period.
3 more elements
A method of washing tableware disposed within a dishwasher comprising the steps of:
- preliminarily washing tableware in said dishwasher by splashing cool water having a temperature of approximately 20.degree. C. on said tableware to initially rinse the surfaces of the tableware for removing particles and substances adhering to the tableware;
- steaming said tableware and simultaneously preheating water for later use after completion of said preliminary washing step, said steam being applied for a predetermined time interval for removing particles and substances including starch, adhering to the tableware;
- washing said tableware after completion of said steam washing step for an additional time period to substantially remove remaining particles by contacting said tableware with said preheated water and a predetermined quantity of additional water, said wash water containing a cleaning agent;
- and
- rinsing said tableware for a predetermined time period.
2 more elements
Dependencies are inferred from the claim text.