US1001232A

US1001232A - Water-heater.

Info

Publication number: US1001232A
Application number: US49983709A
Authority: US
Inventors: Harry E Townsend
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-06-03
Filing date: 1909-06-03
Publication date: 1911-08-22
Anticipated expiration: 1928-08-22

Description

H. E. TOWNSEND.

WATER HEATER. APPLICATION FILED JUNES, 1909.

1 1,001,232, Patented Aug. 22, 1911.

2 SHEETS-SHEET 1.

l mm W WlTNESSES: v v V INVENTOR W v H. E. TOWNSEND.

WATER HEATER.

APPLIOA! 1ION FILED June, 1909.

Patented Aug. 22, 1911.

7 2 SHEETS-SHEET 2.

FIG-.5.

FIG. 3.

WITNESSES:

INVENTOR.

COLUMBIA PLANOGRAPII (20.. WASHINGTON. D. c.

rrnn srarns PATENT OFFICE.

HARRY E. TOWNSEND, OF NEW YORK, N. Y.

WATER-HEATER.

Specification of Letters Patent.

Patented Aug. 22, 1911. This application filed June 3, 1909.

Serial No. 499,837.

To all whom it may concern:

Be it known that I, HARRY E. TOWNSEND,

I a citizen of the United States, residing in New York, borough of Brooklyn, in the State of New York, have invented certain new and useful Improvements in Water- Heaters, of which the following is a specification.

My invention relates to water-heaters of the partially submergible type, suitable for heating water in bath-tubs, etc., and it consists in the novel construction and arrangement of parts as will be more fully set forth hereinafter and then claimed.

Referring to the drawings, Figure 1 is a central vertical section of a heater constructed according to my invention; Fig. 2 is a plan view of the same, partially in sec tion, taken upon the lines A B of Fig. 1; and Figs. 3, 4t and 5 are sectional views illustrating other methods of constructing a heater embodying the said invention.

Similar numerals refer to similar parts throughout the several views.

The outer casing 1 in its preferred form comprisesa bottom portion, a laterally expanded and inwardly inclined body portion rising therefrom, and aflaring neck-like portion rising from the body portion, the whole being circular in cross-section, or substantially so. Within the body of the casing is a watershell 2 comprising an inner cylindrical wall, an annular bottom extending upwardly and outwardly from the inner wall nearly to the outer casing, and an outer wall which declines from the top of the inner wall to the outer edge of the bottom so as to correspond with the contour of the adjacent body portion of the casing; An

annular space is formed betweenthe watershell and the body of the casing, the parts being connected by means of upper and lower tubes 3, and 4, respectively, which afford communication between theexterior of the casing and the interior of the watershell. The lower tubes afl'ord inlet ducts and the upper tubes outlet ducts to permit the circulation of water through the interior of the shell.

The space between the bottom of the watershell and the bottom of the casing constitutes a combustion chamber 5, in communication with the annular space'between the shell and the body of the casing. With in this chamber, concentrically therewith, is located the annular burner 6, which is connected by means of radial pipes or ducts 7 with the lower end of a central gas inlet 8, This gas inlet rises within an open cylindrical down-draft flue 9, a portion of which conveniently constitutes the inner cylindrical wall of the annular watershell. The flange 10, depending from the bottom of the water-shell and being properly a continuation of the down-draft flue, has its lower edge terminating within the inner circumference of the annular burner slightly below the top thereof, the burner being spaced slightly away from the said flange to provide an intervening annular air passage 11. The burner is also slightly spaced from the bottom and sides of the casing to provide

air passages

12, 13, under the burner and at its outer circumference respectively. This arrangement tends to prevent the gases of combustion from escaping through the central down-draft flue, and causes air supporting the combustion to first pass under the burner and thence upward through the air passages 11, 13 to the combustion chamber, thus insuring a continuous circulation of air in the direction indicated by the arrows in Fig. 1. Figs. 3 and 4 show modifications of the construction as above described, in which the down-draft flue 9 is carried directly down below the level of the top of the annular burner 6, said burner being made of a smaller diameter so that the down-draft flue terminates within and adjacent to the inner circumference thereof, in the same manner as the flange 10, as shown in Fig. 1. Fig. 5 shows the lower portion of the water-shell 2 extending down below the top of the burner, and spaced slightly away from the inner circumference of the same, to provide the air passage 11, as above described.

The air passages 11, 13 at the inner and outer circumferences of the burner are'only wide enough to admit of the passage through them of suflicient air to support combustion at the portion of the burner served by each air passage respectively, for the purpose of causing the air to be evenly distributed to all parts of the burner. The annular burner 6is channel shaped in cross section, and its upper edges and the under edges of the cover plate lt are correspond- 16 cast in its under edges for the escape of the gas within the burner. These notches are so closely spaced as to provide 'practi-' cally continuous lines of combustion around both the inner and outer circumferences ofthe burner, and are so arranged as to discharge the gas issuing from them upwardly across the air passages above referred to, thus bringing it into immediate contact with the air passing upward therethrough, re-

sulting in rapid and complete combustion.

As the gas within the heater is ignited by merely holding a lighted match or taper over the top, it is important that the initial movement of hot gases shall be in the direction indicated by the arrows in Fig. 1. To insure this the central down-draft flue is made of a lesser height than the escape flue, for the reason that should the entire heater become filled with gas before ignition, when ignition occurs the hot gases will tend to pass out through the taller flue.

The down-draft flue is made of greater diameter above the top of the water-shell than below it, for the reason thatthis portion, having its outer surface in contact with the gases of combustion, becomes more or less heat-0d, thus causing the air in contact with its inner surface to become heated and to flow up and out of the down-draft flue. The greater diameter of this portion admits of the upward movement of the air in immedi ate contact with its inner surface without interfering with the downward passage through the center of the flue of 'suflicient air to support the combustion, asillustrated by the arrows at the point 17.

To\prevent the gas from igniting within the burner, the cored holes 18 for the admission of air to mix with the gas are covered by the wire gauze 19, held in place by the retainer 20, having openings to correspond with the cored holes 18. The retainer 20 fits over the nipple 21, through which gas is discharged into the burner, and is held in place by the pipe 22 being screwed down upon it. The carrying handle 23, fits loosely on the pipe 22, so that when the heater is in operation it rests on the top of the sleeve 24, in which position it is within the down-draft flue, and therefore protected from the. hot air arising from the heater. When the heater is to be lifted the handle is slid up the pipe 22 until it is stopped by the flange of the hose nozzle 25., where it can be conveniently grasped by the hand.

One of the difficulties met with in constructing a heater of this type isto condense within practicable limits of displacement and height the necessary amount of heating surface, effectively arranged in relation to the action of the hot gases thereon. The construction herein described, with the watershell arranged directly above the burner, and extending nearly to the outer casing, the outer casing inwardly inclined above the water-shell and closely following the contour of the same, provides ample heating surface within a few inches of height, and also a tortuous and narrow passage through V which the hot gases cannot escape without coming into contact with one of the surfaces forming the walls of the said passage. The use of the heater is not, however, limited to water of a shallow depth, as the weight is so proportioned to the displacement that the heater will float when the safe limit of submergence has been reached.

When the heater is to be used it is placed in the water to be heated and connected by the tube 26 with a gas supply, and gas admitted to the burner. A lighted match is held above the heater until the gas within ignites, when the heater-will require no further attention until the water has been heated to the desired temperature.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent is:

1. In a water-heater, the combination of a casing, an annular burner within the casing, a central cylindrical down-draft flue, the said casing being spaced away from the central down-draft flue to provide a combustion space and an escape flue, the said burner being located within the said combustion space, the lower end of the central down-draft flue terminating within and adjacent to the inner circumference of the burner and below the top of the same, substantially as shown and described.

2. A water-heater comprising an annular casing, a central cylindrical down-draft flue, an annular burner located between and concentric with the central down-draft flue and the casing, the said central down-draft flue having its lower end terminating below the level of the top of the burner and within and adjacent to the inner circumference of the latter, substantially as shown for the purpose specified.

3. In a water-heater,.the combination of a casing, an annular burner within the casing, a central cylindrical down-draft flue, the casing being spaced away from the central clown-draft flue to provide a combustion space and an escape flue, the annular burner being located within the combustion space and somewhat above the bottom of the casing, the central down-draft flue and the casing being spaced away from the burner to provide air passages at its inner and outer circumferences respectively, the central down-draft flue having its lower portion terminating within and adjacent to the inner circumference of the burner and slightly below the top of the same, substantially asset forth.

4. A water-heater comprising an annular casing, a central cylindrical down-draft flue therein, said casing and down-draft flue being spaced apart to provide therebetween a combustion chamber and an escape flue, an annular burner located within the combustion chamber and somewhat above the bottom of the casing, the central down-draft flue and the casing being spaced away from the burner to provide air passages at its inner and outer circumferences respectively, the said air passages being only approximately wide enough to admit of the passage through them of sufficient air to support combustion at the portion of the burner served by the respective air passages.

5. A water-heater comprising a casing, an annular burner within the casing, a watershell above the burner, a central down-draft flue passing through the said water-shell, a flange depending from the under side of the water-shell and having its lower edge terminating within and adjacent the inner circumference of the burner and slightly below the top thereof, substantially as shown for the purpose specified.

6. A water-heater comprising an annular casing, an annular burner within the easing, a watershell above the burner, a central down-draft flue passing through the water-shell, the bottom portion of the said water shell terminating within and adjacent the inner circumference of the burner and slightly below the top thereof, substantially as shown and described.

7. A water-heater comprising a casing, a centrally arranged cylindrical down-draft flue, an annular burner located between the down-draft flue and the casing, an annular water-shell arranged above the burner and inclined from the down-draft flue nearly to the outer casing, the sides of the casing sloping inwardly above the water-shell being correspondingly inclined and being spaced away from the shell to provide an escape flue for the gases of combustion, and suitable ducts leading from the exterior of the casing to the interior of the water-shell, substantially as shown and described.

8. A water-heater comprising a casing, a

central down-draft flue therein, said casing and flue being spaced apart to provide therebetween a combustion chamber and an escape flue, a burner located within the com-, bustion chamber, the top of the said downdraft flue being at a level below the top of the escape flue, substantially as shown and described.

9. A water-heater comprising a casing, a central down-draft flue therein, said casing and flue being spaced apart to provide therebetween a combustion chamber and an es cape flue, a burner located within the combustion chamber, a water-shell encompassing the lower portion of the down-draft flue,

the said down-draft flue being enlarged above the water-shell substantially as shown, for the purpose specified.

10. In a water-heater having a central down-draft flue and a surrounding escape flue, a carrying handle movable into and above said down-draft flue, and means for supporting and guiding said handle.

11. A water-heater comprising a casing, a central cylindrical down-draft flue therein, said casing and flue being spaced apart to provide a combustion chamber and an escape flue, a gas inlet within the down-draft flue, a connection between the lower par of said gas inlet and the burner, a gas feed phpe rising from said inlet, and a handle slidably mounted on said pipe and movable thereon into and above the down-draft flue.

12. A water-heater comprising a casing, a central down-draft flue therein, an annular water-shell encompassing the down-draft flue and having its bottom portion upwardly inclined therefrom nearly to the outer casing, the casing being spaced away from the water-shell and the down-draft flue to provide therebetween a combustion chamber and an escape flue, an annular burner located under the upwardly inclined portion of the said water-shell, and ducts affording communication between the exterior of the casing and the interior of the water-shell.

13. A water-heater comprising a casing, a central down-draft flue therein, an annular water-shell encompassing the down-draft flue and extending therefrom nearly to the outer casing, the said water-shell having its outer circumference at a level above the lower end of the down-draft flue, the outer casing being spaced away from the watershell and the down-draft flue to provide therebetween a combustion chamber and an escape flue, an annular burner located between the down-draft flue and the outer circumference of the water-shell, and ducts affording communication between the exterior of the casing and the interior of the water-shell.

14. A water-heater comprising a casing having a circular bottom portion, a laterally expanded and inwardly inclined body portion rising therefrom, and a necklike portion constituting an escape flue rising from the body portion, an annular water-shell lo cated within and spaced from the body portion of the casing, an annular burner located .below the said water-shell, a down-draft flue encompassed by the said water-shell, and ducts aflording communication between the exterior of the casing and the interior of the water-shell.

15. A water-heater comprising a casing having a circular bottom portion, a laterally expanded and inwardly inclined body por-' tion rising therefrom, and a necklike portion constituting an escape flue rising from the body portion, an annular water-shell located within and spaced from the body port-ion of the casing, an annular burner located below .said water-shell, a down-draft flue encompassed by said water-shell and terminating at its lower end within and adjacent to the inner circumference of the burner, a gas inlet within the said downdraft flue, a connection afiording a communication between the said gas inlet and the burner, and ducts affording communication between the exterior of the casing and the interior of the water-shell.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY E. TOWNSEND.

WVitnesses:

GEORGE TOWNSEND, OSCAR T. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.