Fluid heating apparatus
AssigneeElectro-Thermal Corporation
InventorJames B. Jerles
Life of this patent
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Abstract
A fluid tank, with an inlet and an outlet, is provided with first heating means for heating the fluid in the tank to a first temperature and a second heating means for heating the fluid to a second temperature which is lower than the first temperature. A thermostatic switch is disposed to be responsive to the temperature of the fluid in the tank outlet to enable the first heating means only when the temperature in the outlet is above a predetermined level. The fluid in the tank is maintained at a low temperature during periods of non-use, and at an increased temperature only during periods of use, thus economizing on heating energy.
Claims9
Fluid heating apparatus comprising:
- a fluid tank having a fluid outlet through which fluid from the tank may flow, said outlet being in heatdissipating relation to a heat energy absorbing medium;
- first heating means for heating the fluid in said tank to a first temperature;
- and
- control means for sensing the outlet fluid temperature and for activating said first heating means responsive to fluid temperatures above a predetermined level in said outlet and for deactivating said heating means in response to fluid temperatures in said outlet below said level.
Apparatus for use with a fluid heating tank having fluid outlet in heat-dissipating relation to a heat absorbing medium and a heating element comprising;
- first means for thermally engaging the fluid outlet and sensing the temperature of the fluid in the outlet, and for providing a signal when said temperature is above a predetermined level;
- second means responsive to said first means signal for activating the heating element in the tank.
Dependencies are inferred from the claim text.