Instant water heater |
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| 申请号 | US3768458D | 申请日 | 1971-11-03 | 公开(公告)号 | US3768458A | 公开(公告)日 | 1973-10-30 |
| 申请人 | WILLIAMS G; | 发明人 | WILLIAMS G; | ||||
| 摘要 | An improved portable water heater for use in outdoor camping, with trailers, and pickup campers, etc. that will rapidly heat quantities of water efficiently and safely. Heat is generated by burning bottled propane gas delivered through a simple and efficient burner apparatus, which directs the heat from the burning gas into a water heating system through which water is circulated to be quickly heated. The improved water heater includes means for alternatively pumping water from a built-in water supply, or through a hose connected to or immersed in an external water source. The temperature of the hot water generated is regulated by the volume of water that a pump located between the water source and the water heating system forces through the water heating system. | ||||||
| 权利要求 | 1. An improved portable, instant hot water heater comprising a housing; a burner unit mounted in a lower end of the housing and having a fuel nozzle directed upwardly into the housing; vent means through a wall of the housing at the upper end thereof through which heat from the burner assembly is exhausted; liquid heating means providing means for circulating liquid therethrough, said liquid heating means being positioned within the housing and between the burner assembly and vent means and having means for conducting heat from the burner unit therethrough in close proximity to the means for circulating liquid therethrough; a water reservoir within the housing; valve means for selectively connecting the means for circulating liquid in the liquid heating means with the said reservoir or with connection means to an outside water source; pump means having an intake and an outlet on the housing; means coupling the intake of the pump means to the valve means, and the outlet of the pump means to the liquid heating system, whereby liquid is pumped from the valve means into the means for circulating liquid; a spout extending from the housing; a conduit connecting the means for circulating liquid and the spout; a source of combustible gas under pressure; gas conduit means interconnecting the said source and the said fuel nozzle; and valve means controlling flow between the source and the fuel nozzle. 2. An improved portable, instant hot water heater as in claim 1, wherein the burner unit is composed of a circular burner bowl having a straight upstanding wall and open at iTs top; and an intake pipe extending tangentially and angularly upwardly into the burner bowl, whereby gas introduced through the pipe to the interior of the burner bowl swirls upwardly to the top of the bowl. 3. An improved portable instant hot water heater as in claim 2, wherein the burner bowl has a hole formed axially through its bottom at the center thereof and at least one angled air hole journaled through the said bottom of the burner unit between the said center hole and the upstanding bowl wall, each said air hole being angled in the direction of travel of the swirling gas, whereby air is entrained in said gas. 4. An improved portable instant hot water heater as in claim 2, wherein the intake pipe has at least one air intake hole formed therein and surrounds the end of the gas conduit means whereby a Venturi is formed and air is entrained in gas entering the intake pipe from the gas conduit. 5. An improved portable instant hot water heater as in claim 1, wherein the valve means comprises a sleeve in the reservoir having one end connected to the means coupled to the intake end of the pump and having at least one hole in the wall of the sleeve within the reservoir; a tubular insert open at both ends and having one end journaled in the sleeve, and said tubular insert having a hole through the wall thereof adapted to be turned into and out of alignment with the hole in the wall of the sleeve and the other end projecting from the housing; and handle means for turning said insert. |
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