Next Generation Bare Wire Water Heater

• US 20190049149A1
• Filed: 10/17/2018
• Published: 02/14/2019
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Rheem Manufacturing Company (Paloma Co., Ltd.)
• Original Assignee: Eemax, Inc. (Paloma Co., Ltd.)
• Inventors: Hayden, Christopher M., Jurczyszak, Eric R., Hankins, Jeffrey D.
• Granted Patent: US 10,914,492 B2
• Time in Patent Office: Days
• CPC Class Codes: F24H 1/142 using electric energy supply
• CPC Class Codes: F24H 15/128 Preventing overheating
• CPC Class Codes: F24H 15/20 characterised by control inputs
• CPC Class Codes: F24H 15/37 of electric heaters
• CPC Class Codes: F24H 15/395 Information to users, e.g. alarms
• CPC Class Codes: F24H 2250/02 Resistances
• CPC Class Codes: F24H 9/1818 Arrangement or mounting of electric heating means
• CPC Class Codes: F24H 9/2028 Continuous-flow heaters
• CPC Class Codes: H05B 3/16 the conductor being mounted on an insulating base
• CPC Class Codes: H05B 3/46 heating conductor mounted on insulating base

Abstract

A heating unit for heating fluid is described having at least one electrical resistance heating element on an outer surface of a tube. At least one indexed groove is provided around a surface of the tube allowing for at least one retention clip to hold the electrical resistance heating element. A heating chamber is also provided to enclose a portion of the tube and to provide a flow channel therebetween. The heating chamber includes an optical sensor to detect overheating of the at least one electrical resistance heating element. Fluid is heated by flowing over the surface of the at least one electrical resistance heating element and through the tube.

Claims

1. A heating unit comprising:

a tube having a flange and at least one indexed groove located along a length of the cylindrical tube and forming a continuous recession across a circumference of the cylindrical tube, wherein the at least one indexed groove contains a retention clip; and

at least one electrical resistance heating element positioned outside the indexed grooves and having a first end connected to the tube via the flange and a second end connected to the tube via the retention clip.