Legal status (The legal standing is an assumption and is not a legal conclusion. Current Assignee (The listed assignees could also be inaccurate. Priority date (The priority date is an assumption and is not a authorized conclusion. This invention relates to a submersible heater for a physique of water and, particularly, to a extremely portable comparatively simple and cheap submersible heater for swimming swimming pools. It is another object and have of this invention to offer a submersible waterheater for swimming swimming pools comprising a buoyant member floatable on the floor of the Water in a pool, a flue assembly including inner and outer radially spaced axially nested and extending cylindrical flue members every having an upper finish supported on the aforementioned buoyant member in order to depend below the floor official Alpha Heater site of the water with the buoyant member disposed therein, buy alpha heater the decrease ends of the internal and outer flue members being respectively open and closed to kind a tortuous reverse move path for sizzling gases flowable down the interior flue member and up the outer flue member between the latter and the interior flue member, and burner means together with blower means mounted on the buoyant member above the floor of the water for burning an acceptable gas and blowing sizzling gases alongside the aforementioned move path, thereby inflicting heat to be transferred from the surface of the outer flue member to water surrounding the latter to heat similar.

Water official Alpha Heater site of the kind aforementioned additional comprising a cylindrical water jacket radially spaced from and surrounding the aforementioned outer flue member to outline therewith a water heating chamber, the opposite ends of the water jacket each being open and the jacket being fully submerged beneath the surface of the water with the buoyant member disposed therein, whereby water being heated could circulate by way of the aforementioned heating chamber between the opposite open ends of the jacket. I Figure 3 is a cross sectional view of the flue assembly of a water heater, but illustrates yet another embodiment of the invention. Sixteen fabricated of an appropriate metallic and having axially opposite open upper and lower ends 18 and 20, and a second or outer axially extending cylindrical flue member or tube 22 likewise fabricated of a suitable metallic and having an higher open end 24 and a closed decrease finish 26 axially opposite thereto.

20 of the latter spaced axially reverse from the closed ends 26 of the outer flue member. 12 disposed therein as clearly illustrated in the drawing. 22 is constantly heated and the combustion gases are exhausted into the atmosphere through the annular exhaust opening 46 formed between the upper open ends 18 and 24 of the inner and outer flue members, respectively. Consequently, water surrounding the outer surface of the outer flue member is heated. 50 and 52, respectively, of the water jacket are open and suitable means corresponding to. 54 are welded between the outer flue member and the upper end of the water jacket to help the latter in axially spaced relation to the buoyant member or donut 12 so that the whole water jacket is submerged. Water jacket forty eight defines with the outer flue member 22 an annular Water heating chamber 56 by which water may circulate as it is heated.

48 and fins 54 may be eradicated if desired and as shown, whereas the heater further contains an annular plate 58 secured between the higher ends 18 and 24 of the inside and outer flue members to substantially close the annular atmospheric exhaust opening 46, though the plate 58 includes a plurality of circumferentially spaced exhaust openings 60 for exhaust purposes. 62 are offered, every having one finish suitably supported on the plate fifty eight in communication with a respective one of the exhaust openings 60 while the other or discharge end sixty four of each stack extends beyond the edge of the buoyant member or donut 12 and beneath the floor of the water for discharge of the combustion gases and merchandise beneath water degree. 32 shouldn't result in toxic, irritant-inflicting or in any other case objectionable products of combustion for discharge into the swimming pool water and, therefore, one reason for the choice for using pure or propane gas as the fuel. 22 with a plurality of axially extending circumferentially spaced fin members 66 which improve the area of contact of the outer flue member with the water, thereby enhancing heat transfer to the latter.

66 may be utilized within the embodiment illustrated in Figure 1 which includes the water jacket 48 and as indicated in dotted lines in Figure 3, or within the embodiment of Figure 2 for the purpose aforementioned. PORTABLE SUBMERSIBLE SWIMMING POOL HEATER Filed June 29, 1962 INVENTOR. AT/URIVE 6' United States Patent 3,194,229 PORTABLE SUBMERSIBLE SWIMMING POOL alpha heater portable Donald R. Borgeson, 18301 Riverside Drive, Birmingham, Mich. Fiied June 29, 1962, Ser. No. 206,363 1 Claim. Cl. 126360) This invention pertains to a submersible heater for a physique of water and, in particular, to a extremely portable relatively simple and cheap submersible alpha heater portable for swimming pools. It has heretofore been recognized as being desirable to equip out of doors swimming swimming pools, significantly in more northern climes, with heating methods for heating the pool water within the curiosity of extending the swimming season to the utmost extent possible and to in any other case contribute typically to swimming consolation in the course of the season corresponding to on cool evenings and even throughout the day when unseasonably cool ambient temperatures'might occur.