Patent ID: 7503287
Filing Date: 2009-03-17
Classification: A47J,F24H

Abstract:
1. A water heating system comprising: a reservoir for containing water; a lower portion of the reservoir defining an inlet zone; and an upper portion of the reservoir defining and outlet zone; a water inlet in fluid communication with a source of water and the inlet zone; a heater having an active heating portion positioned in the inlet zone; a temperature sensor positioned for sensing temperature in the inlet zone; a water outlet in fluid communication with the outlet zone; and a controller coupled to the heater and the temperature sensor, the controller using information from the temperature sensor to controllably operate the heater to maintain a predetermined temperature within the reservoir; a top of the reservoir covering a generally open upper portion of the outlet zone; and the heater carried on and extending through the top and extending into the reservoir with the active heating portion of the heater positioned in the inlet zone, a cold plug portion of the heater positioned between the active heating portion and the top.