US 11,751,746 B2
Dishwashing machine and method
Alberto Buogo, Hull (GB); Callum Couser, Heidelberg (DE); Frank Dierkes, Heidelberg (DE); Jorg Pflug, Heidelberg (DE); Karl-Heinz Mohrhard, Heidelberg (DE); and Caroline Rigobert, Heidelberg (DE)
Assigned to Reckitt Benckiser Finish B.V., Hoofddorp (NL)
Filed by Reckitt Benckiser Finish B.V., Hoofddorp (NL)
Filed on Aug. 4, 2022, as Appl. No. 17/817,401.
Application 17/817,401 is a division of application No. 16/097,341, granted, now 11,445,883, previously published as PCT/EP2017/059432, filed on Apr. 20, 2017.
Claims priority of application No. 1607612 (GB), filed on Apr. 29, 2016.
Prior Publication US 2022/0369892 A1, Nov. 24, 2022
Int. Cl. A47L 15/00 (2006.01); C11D 11/00 (2006.01); C11D 3/386 (2006.01); C11D 3/39 (2006.01); A47L 15/44 (2006.01); C11D 3/395 (2006.01)
CPC A47L 15/0007 (2013.01) [A47L 15/0055 (2013.01); A47L 15/4418 (2013.01); A47L 15/4463 (2013.01); C11D 3/386 (2013.01); C11D 3/38618 (2013.01); C11D 3/39 (2013.01); C11D 3/3947 (2013.01); C11D 3/3953 (2013.01); C11D 3/3956 (2013.01); C11D 11/0023 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An automatic dishwasher comprising:
a cleaning volume for receiving soiled wares;
a first delivery apparatus that is connectable to a source of a first cleaning composition comprising a bleach, wherein the first delivery apparatus is adapted to deliver the first cleaning composition to the cleaning volume as a mist at a temperature below 100° C.; and
a second delivery apparatus that is connectable to a source of a second cleaning composition which is different from the first cleaning composition, wherein the second delivery apparatus is adapted to deliver the second cleaning composition to the cleaning volume as a jet at a temperature below 100° C., wherein the second cleaning composition is bleach-free and comprises at least one enzyme, the enzyme selected from the group consisting of an amylase, protease, cellulose, pectinase, mannanase, lipase, lipoxygenase, tannase, laccase, peroxygenase, and gluco-oxygenase,
wherein the automatic dishwasher is configured to carry out a method of dishwashing consisting of:
delivering the first cleaning composition to the cleaning volume to contact the soiled wares and optionally subsequently draining the first cleaning composition from the cleaning volume:
delivering a first rinsing composition to the cleaning volume as a mist or a let to contact the soiled wares after delivery of the first cleaning composition and optionally subsequently draining the first rinsing composition from the cleaning volume;
delivering the second cleaning composition separately to the cleaning volume to contact the soiled wares and optionally subsequently draining the second cleaning composition from the cleaning volume;
delivering a second rinsing composition to the cleaning volume as a mist or a jet after delivery of the second cleaning composition and optionally subsequently draining the second rinsing composition from the cleaning volume; and
optionally delivering a third rinsing composition to the cleaning volume after delivery of the second rinsing composition and optionally subsequently draining the third rinsing composition from the cleaning volume, wherein:
the first cleaning composition is delivered at a lower momentum than the second cleaning composition,
the ratio of momentum between the first and second cleaning compositions is at least 1:3
the first cleaning composition is delivered with a lower mass flow rate than the second cleaning composition,
the ratio of mass flow rate between the first and second cleaning compositions is at least 1:3,
the cleaning volume is 3 L,
the first cleaning composition is delivered with a mean particle size of from 5 to 500 microns and/or the first cleaning composition has a DV(10) of 35 microns, and
one or both of the first and second rinsing compositions comprise a non-ionic surfactant.