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:
Dec. 26, 2023
Filed:
Aug. 06, 2020
A. O. Smith Corporation, Milwaukee, WI (US);
Jianmin Yin, Pewaukee, WI (US);
Stephen Memory, Menomonee Falls, WI (US);
Chad Edington, Milwaukee, WI (US);
Neil Rolph, Mt. Juliet, TN (US);
Brian Iske, Murfreesboro, TN (US);
Dustin Wiggins, Mt. Juliet, TN (US);
Meng Yang, Nanjing, CN;
Tingyu Li, Nanjing, CN;
A.O. Smith Corporation, Milwaukee, WI (US);
Abstract
A water heater includes an outer casing defining a longitudinal axis, an axial direction being defined as extending along the longitudinal axis. The water heater further includes a combustor for production of hot flue gases, a primary heat exchanger including a tube positioned within the outer casing, and a secondary heat exchanger including a plurality of plates coupled together by brazing to form a brazed plate heat exchanger. The secondary heat exchanger includes a first set of passages defined between the plates, and a second set of passages defined between the plates and alternating with the first set of passages in the axial direction. The primary and secondary heat exchangers are in fluid communication such that the flue gases flow through the second set of passages before being exhausted, and water to be heated flows through the first set of passages to a delivery point for use upon demand.