The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2026
Filed:
Jun. 22, 2023
Lg Electronics Inc., Seoul, KR;
Seungyoun Kim, Seoul, KR;
Hoo Sun Lee, Seoul, KR;
Kwangsoo Jung, Seoul, KR;
Byung-Soon Kim, Seoul, KR;
Doo Hyun Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A dishwasher includes a tub defining a washing space and accommodating dishes and a heat pump apparatus configured to heat wash water introduced into the tub. The heat pump apparatus includes a compressor configured to compress refrigerant, a first heat exchanger configured to heat water introduced into the tub, a first expansion valve configured to expand refrigerant, a second heat exchanger to which refrigerant is introduced from the first expansion valve, a second expansion valve disposed in parallel with the first expansion valve, a third heat exchanger disposed in parallel with the second heat exchanger, and a four way valve connected with the compressor, the first heat exchanger, the second heat exchanger, and the third heat exchanger and configured to change a flow path of the refrigerant.