US 12,075,959 B2
Dishwasher having condensing duct and heat exchange portion
Doo Hyun Kim, Seoul (KR); Seungyoun Kim, Seoul (KR); Hyung Man Park, Seoul (KR); Min Jae Jeong, Seoul (KR); and Youngsoo Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Oct. 22, 2021, as Appl. No. 17/508,594.
Claims priority of application No. 10-2020-0137874 (KR), filed on Oct. 22, 2020.
Prior Publication US 2022/0125275 A1, Apr. 28, 2022
Int. Cl. A47L 15/48 (2006.01); A47L 15/42 (2006.01); F28F 1/10 (2006.01)
CPC A47L 15/483 (2013.01) [A47L 15/4246 (2013.01); A47L 15/486 (2013.01); F28F 1/10 (2013.01); A47L 15/4285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dishwasher comprising:
a tub having a washing space defined therein;
a door disposed at a front side of the tub and configured to open and close at least a portion of the washing space; and
a drying device configured to supply air to the washing space, the drying device comprising:
a condensing duct that is disposed outside the tub and faces an outer surface of the tub, the condensing duct being in fluid communication with an inlet port defined at the tub,
a cold air supply module disposed outside the tub, the cold air supply module comprising a heat exchange flow path part that is spaced apart from the inlet port, that comprises a pair of plates parallel to a side surface of the tub, and that overlaps with at least a portion of the condensing duct, and
a fan configured to cause a flow of air in the condensing duct, wherein the condensing duct comprises:
an upstream portion that is in fluid communication with the inlet port, the upstream portion being curved upward relative to the inlet port and extending downward from an upper end of the upstream portion, and
a heat exchange portion that is connected to the upstream portion, that is disposed between the pair of plates, and that extends downward from the upstream portion along the pair of plates, the heat exchange portion facing and overlapping with the pair of plates,
wherein the condensing duct further comprises one or more guides that are disposed at the upstream portion and extend along the upstream portion, and the one or more guides protrude from the condensing duct in a direction toward the side surface of the tub,
wherein the one or more guides comprise a plurality of guides extending between an upper edge of the heat exchange flow path part and the inlet port and disposed at the upstream portion and spaced apart from one another,
wherein the plurality of guides comprise a first guide and a second guide that extend from an upper edge of the heat exchange flow path part, the second guide being spaced apart from the first guide and disposed vertically above the first guide, and
wherein a length of the second guide from the upper edge of the heat exchange flow path part to an upstream end of the second guide is greater than a length of the first guide from the upper edge of the heat exchange flow path part to an upstream end of the first guide.