US1295610A

US1295610A - Tank water-heater.

Info

Publication number: US1295610A
Application number: US5892715A
Authority: US
Inventors: Gerhardt F Schwartz
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-10-30
Filing date: 1915-10-30
Publication date: 1919-02-25
Anticipated expiration: 1936-02-25

Description

G. F.. SCHWARTZ.

TANK WATER HEATER.

APPLICATION man ocr. 3o. 1915.

,LQlO Paented Feb. 25, 19H).

2 SHEETSSHEET 1.

G. F. SCHWARTZ.

TANK WATER HEATER.

APPLICATION FILED OCT. 30. |915.

2 SHEETS-SHEET 2.

Patented Feb. 25, 19M).

@Nil AT enanann'r n. scnw'rlz, or sr. Louis, inrss'euar.

TANK WYATERQHEALTEJR.,

Specioation o' Letters Eatent.

Patented Feb. 25, 15.9199.

.application led Octobero, 1915. Serial No. 58,927.

lThis invention relates to' improvements.

in and relating to tank water heaters, and has for its object to provide a heater of thls character whereby -water may be more quickly heated than with heaters heretofore used, and whereby a great saving in gas may be obtained by burning by a second combustion the unconsumed gases of the first combustion, thereby also doing away with the danger from such heaters of carbon monoxid gas, hydrocarbons, etc. A further object of the invention is to provide such a heater whereby the `water may be automatically kept at a uniform temperature.

`With these and other objects in view, my invention consists of the novel features, arrangement and combination of parts, hereinafter more fully described and pointed out in the'claims. p

In the drawings,

Figure 1 is a side elevational view of my improved tank water heater;

Fig. 2 is a vertical sectional View thereof;

Fig. 3 is a cross-sectional view on the line 3-3 of Fig. 2;

Fig. 4 is a sectional view with parts broken away showing a` modified form of burner; l l

Fig. 5 is a cross-sectional view taken on the line 5 5 of Fig. 4;

Fig. 6 is a ross-sectional view showing a further modi ed form of burner; and

Figs. 7 andl 8 are sectional views of still further modified forms.

Similar reference numerals indicate corresponding parts throughout the several views.

Referring tothe drawings, and more particularly to Figs. 1 and 2 thereof, the invention comprises a water tank having an outer wall 2 and an inner core 3, enlarged at the lower portion thereof as shown at 4. 'As .shown in Fig. 2, the reduced upper portion of the core 3 is of much greater length or -rather height than the enlarged lower portion 4, and the connection of these two portions is cected b v a gradually-tapering or conical intermediate portion. The said water tank is preferably constructed of galfvanized iron electrically welded, and in- .closed in an outercasing of asbestos 5. A cold water inlet-pipe 6 projects through the top of the tank and at suitable places on the side walls are provided range water back connections 7. The lower end of the inlet pipe 6 is preferably arranged to discharge water against the outwardly-Haring upper surface of said tapering intermediate portion of the inner core 3, so that the water will be deflected outwardly as it strikes 'said surface. Extending through the core 3 is a copper circulation tube 8 connected to the said water tank or to the water jacket of a burner at the bottom thereof as hereinafter described and extending spirally upward in the core through a vent 9to a three-way joint or T 10', to which is also connected. a hot water pipe 11 to the water tank and a hot water outlet-pipel 1Q. Corresponding to the shape of the inner core 3, 4, the circulation coil 8 has its major upper portion of t reduced diameter, while the lower portion is of greater diameter but of smaller length or rather height'than said upper.` portion.

A double combustion burner 1s provided directly under the circulation tube 8, comprising a burner 13 'of superposed rings spaced apart as shown, or a cylinder having sawe-d slots in the outercircurnference, and provided with a top plate '14 and a feed pipe 15 of the Bunsen burner type which is connected to the gas pipe 16. Above the top plate 14 is secured a plate 17 provided with circumferentially arranged series of

holes

18 and 19 and a downwardly depending fiange 2O extending below the burner 13. This flange is for the purpose of catching such gases as are not consumed in the first combustion at the burner 13, allowing them to pass through the

holes

18 and 19 and burn above the same. A

In one form of construction shown in Fig. 2, a Water channel Q1 is circumferentially arranged about the flange 20, and is connected to the water tank by an inlet pipe 22, and connected to the circulating pipe 8 lby an outlet pipe 23, so that the water before passing into the said circulating pipe is heated in the channel about the burner v13. ln another form shown in Figs. 4 and 5, a circumferential water channel 24 is provided around the flange 20 in which is arranged a diaphragm tube 8, so that the water passing through this channel to be heated must go completely around the same before going to the said circulating tube. In the form shown in Fig. 6, no water channel is provided on the burner, the water being entirely heated in the circulating tube 8, which is connected to the water tank at 28, or if desired, the tube may be brought down and around the burner, either encircling the flange 2O as shown at 29a in Fig. T, or the 'burner 13 as at 30a in Fig. 8.

A. thermostatic valve is connected to the water tank at 29 for controlling the gas sup ply to the burner, which consists ofan exterior casing 30 provided at-the top and bot` tom with suitable extensions 31 and 32, in which are guided the end portions 33 and 34 of a thermostatic member; Between the portions 33 and 34 is located a plurality of expansible members 35 forming the thermostatic element, and to the'end portion 34 is connected a spring 36 adjustable within the extension 32. Secured to the casing 3D is a valve-housing` 37 having an outer seat 38 upon which the valve 39 may rest and close the passage leading to thegas pipe 16 and an inner valve seat 40, which, when the valve is seated thereon permits gas to flow from the pipe 41,to the4 pipe 16. A valvestem 42 is provided on the valve 39 having a slot in which are arranged opposing knife-edges 43 and 44 and is guided in its movement by a socket 45 in the casing. A lever 46 is pivoted to a projection 47 of the casing 30, to the upper end of which is pivated the tilting lever 48, one end of which rests in the slot of the valve stem between the knife edges 43 and 44. At its opposite end an anti-friction roller 49 is provided which engages an angular projection or trip 50 provided on the portion 34 of the thermostatic member. A tension spring 51 is connected with the lever 46, at its upper end, and is also connected with the portion 34 of the thermostatic member at a point 52 approximately in line with the apex of the trip 50, as shown in the drawings. A similar spring is arranged at the opposite side of the device and connected in the same manner.

As shown in Fig. 1, theouter casing is provided with a lower portion 53 surrounding the burner, and having a door 54 for lighting the same. Legs 55 are provided upon which the whole apparatus is supported.

The operation of my improved tank water heater is as follows: Cold water enters the tank 1 through the cold water supply-pipe 6 and passes into the circulating copper tube 8 either directly through the opening 28 shown in Fig. 6, around the burner as in Figs. 7 and 8, or by way of the water channels arranged around the burner, as shown in Figs. 2 and 4. The heated water circu- -lates through the copper tube 8, and passes back into the water tank at l1, and also through the outlet pipe 12 for use when intended. lVhen the Water becomes heated to a predetermined temperature at the lower part of the tank, the thermostatic member 35 is affected to operate the valve 39 -to cut off the supply of .gas to the burner. The said valve is caused to operate in the following Inanner: `When the temperature rises as before stated, the rod 34 is moved forwardly against the force of the spring 36, and as soon as the point of the trip 50 of the said rod passes the center line of the antifriction roller 49, the springs 51 pull the lever 48 toward the rod 34, the antifriction roller 49 riding upon the inclined face of the trip, throwing rapidly outward with a snap action the lower end of the said lever 48,` thereby moving the valve-stem 42 and valve 39 toward the valve seat 38 and cutting oil' the gas sup ly. `When the temperature is reducedsu ciently, the valve is again opened with a snap action in the same way, the various parts operating in reverse direction.

I have illustrated preferred and satisfactory forms of my invention, but it is obvious changes may be made therein without departing from the spirit and scope thereof, as defined in the appended claims.

1. In a tank water heater, a water tank provided with a central upright core having a lower cylindrical portion of relatively large diameter, and an upper cylindrical portion of smaller diameter than said lower portion, a circulating water coil connected with the tank and arranged in said core, and having a lower portion having superimposed equal diameter convolutions of relatively large diameter, said lower portionof said coil terminating within said lower c vlindrical portion of said core, and an upper portion having superimposed equal diameter convolutions of relatively small diameter and extending through said upper portion of said core. the diameter of the clear space surrounded by the lower portion of the coil being greater than the outer diameter of the upper coil portion, and heating means located beneath said tank and coil.

2. In a tank water heater, a water tank provided with a core, means -for supplying water to said tank, a circulating water tube passing through said core, means for heating said circulating tube, a water channel surrounding said heating means, means connecting said water tank with said water channel. and means connecting said water channel with said circulating tube.

3. In a tank water heater, a water tank provided with a core, means for supplying water to said tank, a circulating water tube passing through said core, means for heating said circulating tube, a Water channel arranged about said heating means, a partition arranged in said Water channel, means at one side of said partition connecting the said Water tank With the said Water channel and means at the other side of said partition connecting'the said Water channel witl the said circulating tube.

4. In a tank Water heater, a Water tank provided With a core, means Jfor supplying Water to said tank, a circulating Water tube arranged Within said core, means for heating said tube, a Water channel surrounding said heating means, and connections extending from said Water channel to the lower portions of said tank and of said tube respectively.

5. In a tank Water heater, a Water tank provided with a core, means for supplying Water to said tank, a 'circulating water tube arranged within said core, means for heating said tube, a Water channel surrounding said heating means and provided with a partition, and connections extending from said channel, at opposite sides of said partition, to the lower portions of said tank and of said circulating tube respectively.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

lGERHARD'I F'. SCHWARTZ.

Witnesses J. M. MUiiPHY, B. FISHER.