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:
Jan. 26, 2021
Filed:
Jun. 05, 2018
Heatworks Technologies, Inc., Sullivans Island, SC (US);
Jeremiah M. Callahan, Sullivan's Island, SC (US);
Eric J. Doesburg, Charleston, SC (US);
Gregory S. Lyon, Mamaroneck, NY (US);
Michael J. Wieckowski, Charleston, SC (US);
Heatworks Technologies, Inc., Sullivan's Island, SC (US);
Abstract
A liquid heating system includes an instantaneous heater () having an inlet () connected to a reservoir (). The outlet () of the heater is connected to fixtures () which use the heated liquid, and is also connected through a return connection () to the reservoir. In an idle mode, a pumpdraws liquid from the reservoir (), so that the liquid circulates through the heater and back to the reservoir. A controller () actuates the heater to heat the liquid to a first setpoint temperature, so that the liquid in the reservoir stabilizes at the first setpoint temperature. In a supply mode, some or all of the heated liquid flows from the outlet to the fixtures (). Cold liquid is admitted from a supply () to the reservoir, and cold liquid desirably also is supplied to the heater inlet along with liquid from the reservoir, so that the heater inlet receives a combination of these. The controller controls the proportion of cold liquid to liquid from the reservoir in the combination, so as to maintain the heater at a setpoint heating rate while also maintaining the temperature of liquid discharged from the heater outlet at or near a setpoint temperature.