Cycle for a dishwasher to reduce filming

Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

134 58D, 134 34, 134 952, 134 953, B08B 920

Patent

active

061386928

ABSTRACT:
A method for operating an automatic dishwasher in a manner to minimize the deposition of contaminants or filming on the dishes is provided. The present invention contemplates that objectionable filming on washed dishes or dishware items may occur if residual water left on the dishes at the end of the final drain step is not given a chance to drip off or drain from the dishware. The present invention provides for a drip period following the final drain step in the dishwashing cycle. The drip period provides an opportunity for gravity assisted draining or "drip-off" of residual water from the dishware items prior to evaporation such that the minute particles which are suspended in the residual water are not deposited onto the dishes. During the drip period, rapid evaporation of residual liquid from the dishware items is prevented. This is accomplished, in part, by keeping a vent aperture in the dishwasher door closed for a predetermined time after the final rinse such that the relative humidity remains high in the dishwasher tub and by delaying the energization of the heater such that evaporation is not promoted by the introduction of heat into the dishwasher tub. The present invention further contemplates the use of a purge operation prior to the rinse step wherein a small amount of liquid is supplied into the dishwasher, briefly recirculated and then discharged to drain. The combination of the purge operation with a drip period after the final drain minimizes filming on the dishware items within the dishwasher.

REFERENCES:
patent: 4735219 (1988-04-01), Seeland
patent: 5429679 (1995-07-01), Young
patent: 5560060 (1996-10-01), Dausch et al.
patent: 5797409 (1998-08-01), Cooper et al.
patent: 5836324 (1998-11-01), Johnson et al.
patent: 5881746 (1999-03-01), Buser et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Cycle for a dishwasher to reduce filming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cycle for a dishwasher to reduce filming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cycle for a dishwasher to reduce filming will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2040867

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.