Patent ID: 9702583
Date: 2017-07-11
CPC Classifications: F22B,F22D,F24H

Claim:
1. A self-contained portable apparatus for heating a liquid stored inside a storage tank, the apparatus comprising: a power source for powering a burner firing into a boiler, the boiler in fluid connection with a circulating pump, wherein the power source is a generator operatively attached to a fuel tank for providing fuel to activate the generator; wherein the boiler is configured to heat a heat transfer fluid which is pumped by the circulating pump to a heat exchanger, the heat exchanger operatively configured to transfer heat to the liquid and is fluidly connected to the boiler in such a manner to return cooled heat transfer fluid to the boiler to be reheated; the apparatus further comprising an expansion tank to allow for the expansion of the heat transfer fluid as it is heated, wherein the expansion tank is disposed within the storage tank and vented to the atmosphere through a wall of the storage tank by a vent passing through an orifice defined by the wall of the storage tank; and the apparatus further comprising a separation member for supporting the storage tank above the boiler, wherein the separation member defines an aperture for through passage of an attachment connecting the boiler and the heat exchanger, and wherein the separation member partially defines a compartment containing the boiler.