Patent attributes
There is provided a tankless water heater for heating water passing therethrough. 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 is also disposed within the interior region of the heating tube, and electric power applied to the heating element acts to heat the water passing through the tube. Temperature sensors may be positioned so as to detect water temperature proximate the inlet portion, and the outlet portion. Additionally, a flow meter is positioned proximate the inlet portion. The controller directs signals to switches positioned at each tube so as to apply electric current to the heating elements.
