US1719015A - Water heater - Google Patents

Description

c. u. LEVIS WATER HEATER July 2, 1929.

Filed May 2'7, 1926 5 Sheets-Sheet ATTORNEY.

INVENTOR. Charles HZevz's, 4

C. U. LEVIS WATER HEATER Jul 2, 1929.

Filed May 27, 1926 3 Sheets-Sheet 3 0m ML m a 9 m I a 1 w Patented July 2, 1929.

purse STATES CHARLES u. LEVIS, or PHILADELPHIA, PENNSYLVANIA.

WATER HEATER.

Application. filed May 27, 1526.

This invention relates to water heaters es pee ly a 'lapted for domestic use.

'lhe objects are to provide a water heater which may be regiilaied to beat any desired ipiantity oi water with a minimum cou siiin iiion oi? 'l'uel amlmaintain the water at a by desired temperature; which will heat the water without causing agitation oi the rust sediment seiitljii'ig at the bottom of the tank and which is simple and durable in construction.

'lhese objects, and other :nlvantageous ends which will be described hereinafter, I attain in the jl ollowing manner reference being had to the accouipanyiug drawings in which liicure 1 is a central. section through a heater construcred inaccordance with my invention.

Iliigure 2 a section on line 2-2 oi? Figure l, certain oi the parts beii'ig shown in full,

Figure 3 an enlarged section on line 3 of Figure 2,

l igure :l a. fragmentary sectimi on line oi? Figure 3,

l "igure 3 a side view of" a head which forms a. part oi my invention,

Figure (3 a plan view ot a modified form oi head,

lliguro 7 a section on. line 77 of Fig ure 6..

Figure 8 another 'l or'ni of head, and

l igurc 9 a, section on line 9 9 of Figure it.

ltelierring to the drawings, 1. indicates a drum oi? a water tank, 2 a top head secured. to and closing the upper ernl oi the drum and 3 a. bottom head secured to and closing the lower end of the drum. A water heating chamber at, integral. with the bottom. head and extending into the drum, has an inclined top 5 to which an inlet pipe 6 and an outlet pipe 7 are connected. Tin-Violet pipe is short and connected to the lowermost part oi the top and the outlet pipe is long and is connected to the uppermost part oi the top.

The bottom oi the chamber is made from a n m-ilierroi.is plate 8, such as copper, which bears against the shoulder of a. shouldered edge 9 and is secured to the edge by brazing it with hard solder 10. The lower end of the drum may be mounted on a. suitable support 11 which may also any a. burner 1.2 for heating the nonderrous plate. The hotgases coming from the burner pass upward through a tube 13 se- Serial No. 111,914.

cured. to the top and bottom heads and disposed within the drum. i l ater may be admi tted to the tank by a supply pipe 14. and may be discharged from the tank by a discharge pipe 15. The lower end of the supply pi pc preferably terminates near the upper end of the short inlet pipe Gadjaceut the lower end 01 the drum. Thedischarge pipe 15 stops short at the top head, and. the outlet pipe 7 oil? the heating chamber extends upwardly to a point adjacent the top head. i

In Figures l-5 the beatingchamber is shown. as of substantially conipal cross scction so that a small volume of water will be contained therein.

In l igures 0 and 7 the heatii'ig chamber is oil? circular plan section and in Figures 8 and 9 the heating chamber is of rectangular plan, section. In. all. other respects these chambers are similar to the chamber shown in the other figures of the drawing. I have therefore given correspmuling parts similar reference cliarizicters with the exponent a inl igures 6 and 7 and the exponent b in Figures 8 and 9.

In use the burner. may be ignited in the usual. manner and the fuel supplied to the burner' from any suitable source. The flames ot' the burner playing against the copper plate will. cause the heat to be quickly transferred to the wati-n. in the chamber. The water uponv being heated will rise to the uppermost part or" the chamber adjacent the outlet pipe 7. Upon further heating, the nter will gradually rise through outlet pipe 7 to the top of the tank. the hot water rises, cold. water passes down inlet pipe 6 into the chamber to. be heated. A

circuit for the water thus established through the chamber, up pipe 7, down the drum, through. pipe 6 and into the chamber again as indicated by the arrows. The dimensions of the chamber are preferably such that the volume oi? water therein will be quickly heated and will pass upward through the outlet pipe 7 at such rate that the current established will prevent foreign matter, which may precipitate due to the heating, from settling on the copper plate. The chamber is thus kept free of sediment; and constantly supplies heated sediment -:l'ree water to the top of the tank. Any sediment which may precipitate will settle outside the chamber at the bottom of the tank. The hot gases from the burner may pass upward through tube 13. The heat absorbed from the hot gases will pass through the tube to heat the water. By regulating the flame of the burner any desired quantity of watermay be heated and passed to the top of the tank and kept at any desired temperature.

I have found that by using a non-ferrous plate at the bottom of the heating chamber I of the appended claims.

Having thus described my invention, what Iclaim as new and desire to secure by Letters Patent is 1. A water heater including a tank, a head closing the bottom of the tank, a portion of said head comprising a chamber pr0ject ing inwardly from the bottom portion of the tank and open at its lower end, a separable wall closing the open end of said chamber, and conduits communicating with the inte rior of said chamber, the chamber being considerably smaller in crosssection than the tank. e

2. In a water heater, a water tank, a bottom head for said tank comprising a unit casting fitting within the lower end of the tank and having a preheating chamber therein open at its bottom and an outwardly extending flange formed at its sides, a nonferrous plate covering the bottom of the chamber, an outlet to the tank at the highest point in the chamber, and an inlet to the/chamber at a lower elevation than the outlet, said inlet and outlet having conduit connections for preventing the depositing of sediment on the plate.

3. A heating chamber forming the bottom head of a boiler, comprising an annular flange adapted to fit within the outer casing of the boiler, walls extending from the flange upwardly in the boiler casing to form the chamber, a material of greater thermal conductivity than that of the boiler easing covering the opening to form a bottom to said chamber, said chamber bottom being capable of sustaining a volume of water measured by its cross-sectional area and the height of the boiler and the annular flange being capable of supporting the remainder of the water in the boiler casing.

4. In a water heater having a casing, a heater including an open-ended chamber in the lower end of the casing, a skirt formed adjacent the lower edges of the chamber, and having its outer edge turned downwardly to form an annular flange for securing the heater to the casing, shoulders formed at the junction of the skirt and the lower edges of the chamber, a non-ferrous plate secured to the shoulders and closing the open end of the chamber, and conduits communicating with the interior of the chamher.

5. In a. water heater having a casing, a heater including an open-ended chamber in the lower end of the casing, a skirt formed adjacent the lower edges of the chamber and having its outer edge turned dowm ardly to form an annular flange for securing the heater to the casing, shoulders formed on the lower edges of the chamber. a plate of greater thermal conductivity than said casing secured to the shoulders and closing the open end of the chamber, and conduits communicating with the interior of the chamber; the greatest cross-sectional area of the chamber being substantially less than the v.

cross-sectional area of the casing whereby a substantial space is provided between the outside of the chamber walls and the casing. In testimony whereof I have signed my name to this specification.

CHARLES U. LEVIS.

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