US1716649A - Water heater - Google Patents

Description

J. W. MILLER WATER HEATER June 11, 1929.

2 Sheets-Sheet 1 Filed June 4, 1927 June 11, 1929.

J. w. M I LLER WATER HEATER Filed June 4, 1927 2 Sheets-Sheet 2 INVENTQR W44. M

BY w a;

ATTORNEY Patented June 11, 1929.

UNITED STATES JOHN w. MILLER, or EAST CLEVELAND, OHIO.

WATER HEATER.

Application filed June 4,

c This invention relates to water heaters especially adapted for low pressure vapor or steam heating apparatus, the heater belng of the sectional type, the water sections being enclosed in a water jacketed casing which contains a fire box. The inner cast iron sections are assembled in the casing and connected to manifolds at front and. rear, to which are also connected the hollow casing sections, the whole forming a built-up boiler of high efiiciency.

A further feature of the invention is a hollow top forming a super-heater.

The invention will more fully be understood from the accompanying drawings in which Fig. 1 is a vertical longitudinal section of the heater on the line 11 of Fig. 4. Fig. 2, is a horizontal section on the line 22' of Fig. 1. Fig. 3 is a horizontal section on the line 3-3 of Fig. 1. Fig. 4 is a vertical section on the line ;4--4 of Fig. 1.

Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a section on the line 6-6 of Fig. 7. Fig. 7 is a side elevation of the boiler.

The boiler comprises hollow side casings 6, a hollow front plate 7,'a back casing 8, and a hollow top casing 9, these parts being connected by lugs and bolts indicated at 10. It may here be stated that the chambers of the sideand top casings form water spaces which are connected to each other in a manner to be presently described. The hollow front 7 may be used for heating water for a kitchen supply or the like, by means of connections 11.

The cast iron water sections indicated at 12 are set edgewise beside each other in the casing, extending from front to rear, each section being saddle shaped or curved over the fire box 13 through which access may be had by the door 14 in the front plate, the grate ars being indicated at 15 and the ash pit at 16, in the base 17 of the casing. Eachsection 12 comprises a front wall 18, sides 19 dished inwardly, a rear wall 20, a curved bottom wall 21 at the rear of which is an inclined bottom wall 22, and a top wall 23 completes the section. At the front the sections are recessed to rest on a ledge-24. At the rear, the inclined walls 22 of the sections .rest on a cross shelf or support 25. The front and rear walls of the casing have flanges 26 separating the sections.

A front manifold 27 extends across the front of the casing near the top thereof, and

1927. Serial No. 196,510.

a rear manifold 28 extends across the rear of the casing near the bottom thereof, and the front and rear walls are bored to receive nipples 29 and 30 by whichthe water sections are connected to the manifolds, as well as the hollow side walls 6 which are similarly connected to the manifolds. The front manifold 27 is also connected to the hollow top plate 9 by passages 31 cored in the front wall.

Thefire box communicates with the spaces between the water sections 12, the products of combustion flowing to an upper space 32 under thetop 9, from which the flue con nection 33 takes off through a neck 34 on the top plate. The flue 35 has a direct outlet 36 to the stack, controlled by the damper 37, and also communicates with a down draft or indirect outlet 38 the downtake section of.which is provided with bafiles 39 which may serve as a spark arrester. This down-take section is formed or enclosed in a reservoir 40 mounted on the rear plate of the boiler casing, the reservoir having a return connection 41 from the system, and a lower pipe connection 42 to the lower manifold 28., An outlet or supply connection from the boiler to the radiators is shown at 43. The damper may be opened for direct draft, or may be closed for draft through the section in the reservoir.

The parts of the casing and the water sections may be cast separately and readily assembled, together with the manifolds and other parts. By taking off the top and the manifolds the sections can be got at for removal through the top, without disturbing the side wall and base arrangements. The products of combustion in the space 32 form a super-heater for the vapor in the hollow top 9, and a circulation is provided from the cold manifold 28 through the sections 12 to the hot manifold 27 and the hollow top The reservoir 40 will be kept full by the return condensation. The hollow side lates 6 are also connected to the manifol s, as stated, and thus assist in heating the water therein, the whole forming a: very efficient device for exchangingheat from the products of combustion to the water.'

I claim:

1. A water heater comprising a casing having a fire box therein and hollow top and side walls, spaced water sections arranged vertically in the casing and spaced from said top and side Walls, each of said sections having a rearwardly depending part in the back part of the firebox, a lower manifold outside the rear Wall of the casing and having connections into the depending part of the respective sections, an upper manifold secured to the front Wall of the casing and having connections through the same to the front upper part of the sections and to the hollow side Walls and also to the hollow space in the top of the casing, and a fiue extending from the firebox through the hollow top wall of the casing.

2. A water heater as in claim 1, the casing being built up of flat hollow side walls, a fiat hollow top resting upon and secured to the upper edges of said side Walls, and flat front and rear Walls fitting againstthe nature.

JOHN T. MILLER.

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