US 4,469,935 AGranted

Combined domestic use and space heating electric water heater

OwnerFrancois Candelainventor

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Abstract

An electric water heater for heating a first volume of water for domestic use and a second volume of water for space heating includes a tank receiving water to be heated for domestic use by a first electric heating element mounted in a lower part of the tank. A heating unit is mounted within the mid-section of the tank above the first heating element and includes a first chamber having openings allowing circulation of domestic use water from the tank therethrough, a second closed chamber receiving water to be heated for space heating and a third closed chamber communicating with the second chamber and having an outlet for supplying heated water to a space heating system. A second electric heating element is provided in the first chamber and the second chamber is defined by a series of serially connected compartments, each having a heat conducting element comprising an inverted U-shaped hollow tube in heat collecting communication with the first chamber. A third electric heating element is provided in the third chamber. The tank has an outlet for supplying heated water for domestic use.

Claims12

Dependent claims

A hot water heater for heating water for domestic use and water for space heating comprising:

(a) a tank;
(b) means for supplying water in said tank to be heated for domestic use;
(c) a first electric heating element located in the lower part of said tank for heating said water for domestic use;
(d) means for supplying water in said tank to be heated for space heating;
(e) a heating unit mounted within said tank, said unit including:
(i) first chamber means having openings for allowing said water for domestic use to circulate therethrough;
(ii) a second electric element in said first chamber means;
(iii) second closed chamber means for receiving the water supplied in said tank for space heating;
(iv) heat exchange means in said second closed chamber means in heat collecting communication with said first chamber means;
(v) third closed chamber means in fluid communication with said second closed chamber means;
(vi) a third electric heating element in said third chamber means;
(f) means for collecting heated space heating water from said third chamber means and for supplying that water for use;
and
(g) means for collecting from said tank and supplying heated water for domestic use.

11 more elements

Dependencies are inferred from the claim text.