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Portable water heating system
| Details |
Inventors: Thomas, Mark A.; Regan, Rick; Craft, Gordon;
Assignee: SJS Industries (Beaverton, OR)
Primary Examiner: Yeung; James C.
Assistant Examiner:
Attorney, Agent or Firm: Klarquist Sparkman Campbell Leigh & Whinston
A portable thermosyphon water heating system for use by outdoor enthusiasts, or others at locations remote from a conventional supply of hot water. Water is heated by an open campfire flame in an enclosed heat exchanger, and is circulated between the heat exchanger and a portable non-pressurized reservoir by thermosyphon action. The hot water returning to the reservoir is discharged through a floating transfer conduit assembly, so the discharge rises and falls with the water level in the reservoir. The floating nature of the hot water return allows the majority of water within the reservoir to be used before refilling is needed, while maintaining thermosyphon action. A method of heating a liquid using the system described above is also provided, along with a retrofit apparatus for retrofitting existing reservoirs to use the thermosyphon principles and components of the present invention. |
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DETAILED DESCRIPTION According to one aspect of the present invention, a thermosyphon system for heating a liquid includes a reservoir for containing the liquid.
The system has a heat exchanger for placing in a heat source, with the heat exchanger having a passageway for receiving the liquid therein to transfer heat energy from the heat source to the liquid.
The system includes a conduit coupling the reservoir to the heat exchanger to transfer the liquid therebetween.
The system also has a self-adjusting hot liquid discharge device coupled to the conduit and extending into the reservoir to return liquid from the heat exchanger, with the discharge device rising and falling with the level of the liquid in the reservoir.
According to another aspect of the present invention, a method is provided of heating a liquid using a portable liquid heating system, such as that described above.
According to a further aspect of the present invention, a retrofit apparatus is provided for retrofitting an existing liquid heating reservoir with a heat exchanger, a conduit and a self-adjusting hot water discharge device, which may be as described above.
One object of the present invention is to provide a lightweight portable liquid heating system which uses a non-pressurized reservoir and a solid-fuel heat source.
Another object of the present invention is to provide a portable liquid heating system which allows nearly all of the liquid stored within a system reservoir to be used before refilling is required.
A further object of the present invention is to provide a portable water heating system which allows hot water, cool water, or a combination thereof, to be selectively extracted for use.
Still another object of the present invention is to provide a method of heating a liquid when conventional liquid heating systems are not available.
Another object of the present invention is to provide a retrofit kit for retrofitting existing water heating reservoirs to increase their efficiency and the amount of useful hot water available
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