Patent ID: 8165461
Filing Date: 2012-04-24
Classification: F24H,H05B

Abstract:
1. A tankless water heater for heating water passing therethrough comprising: a control module; a heating system controlled by the control module; wherein the heating system comprises an inlet portion, an outlet portion, and a modular heater interconnected therebetween; wherein the modular heater comprises a plurality of heating units, each heating unit comprising a heating tube and a coupler, wherein each heating tube defines an interior region and each heating tube includes a helical structure whereby the helical structure imparts a swirling motion on water passing through the interior region of the tube; a heating element disposed within the interior region of the heating tube; a controller positioned within the control module; a first temperature sensor positioned so as to detect water temperature proximate the inlet portion and the first temperature sensor in communication with the controller; a second temperature sensor positioned so as to detect water temperature proximate the outlet portion, and the second temperature sensor in communication with the controller; a flow meter positioned so as to measure water flow proximate the inlet portion, and the flow meter in communication with the controller; and wherein the controller controls electrical power applied to each heating element.