US2556671A - Combination wet and dry heat generator - Google Patents

Description

June 1951 GAUSLANDER COMBINATION WET m DRY HEAT GENERATOR 2 Sheets-Sheet 1 Filed March 30, 1948 INEEN TOR. BY 2% $1M;

A ORNEP June 12, 1951 c. AUSLANDER I COMBINATION WET AND DRY HEAT GENERATOR Filed March so, 1948 2 Sheets-Shae: 2

IIIIIIHHHHIIIHH]ml lllllll JZi E IN V EN TOR.

W m T A Patented June 12, 1951 OFFICE COMBINATION WET AND DRY HEAT GENERATOR George Auslander, Long Island City, N. Y.

- Application March 30, 1948, Serial No. 17,820

The present invention relates to a heat generatin unit, particularly adapted for household heating, although capable of more general use, the primary object of the invention being to provide aself-contained unit of simple construction and high efliciency adapted to provide both wet heat and dry heat simultaneously to areas where such a split system is more advantageous than use of a single. system. ".Thus bathrooms and kitchens may be heated by a closed circuit through either steam or hot water heat, and the rest of the house heated by means of an open circuit, to wit, warm air. A submerged heating coil furnishes water for domestic purposes. The unit may be fired with either oil, gas or coal.

Th invention will be described with reference to the accompanying drawings, in which:

Figure 1 is a sectional isometric view taken longitudinally through an embodiment of the invention and on line I-I Fig. 2;

Figure la is a longitudinal vertical section through a modified form of the device;

Figure 2 is a front end elevation of the structure shown in Fig. 1;

Figure 3 is a vertical section on the line 3--3 of Fi 1.

Referring to Figures 1, 2 and 3 of the drawings, I have therein shown a unit comprising a continuous sheet bent into formation to provide side walls I connected by an arcuate top area and to which a front plate 2 and a rear plate 3 are welded. The said unit is mounted on a rectangular base 4 which constitutes a fire box and to which access is given by an opening at 5.

A series of marginally flanged inverted boxlike members 6, I and 8 are welded together at their base flanges and to the side and front walls I and 2. Members 6 and I are flue-connected by a short tube 9 and member 8 is flue-connected by a short tube Ill with the rear wall 3. This arrangement provides three chambers for the hot gases generated in the fire box, which chambers are preferably closed at their sides and tops, each by an arcuate plate as indicated in Fig. 3, such plate being entirely surrounded by boiler water,

as indicated by the horizontal space lines in Figs. 1a. and 3. The flue pipe ID will lead to a stack, as customary, for carrying off waste gases or smoke from the combustion within the fire box.

In the forms shown in Figs. 1, 2 and 3, the upper areas of front and rear plates 2 and 3 support between them a series of horizontal tubes I I which tubes will be surrounded by steam or hot water in accordance with the type of wet heat circulation. The tubes may be internally baffled, if desired, as indicated at Ilrc, Fig. 1.

1 Claim. (01. 237-16) At the front of the structure is welded or otherwise secured a fan box I2, provided with an air filter or screen at I3, and having an intake duct I4 which may be employed as a manifold for communication with branch ducts (not shown) leading from a plurality of floor areas in rooms to be heated with dry heat. A motor driven fan I5 is mounted in the box I2 with its blades acting to force air through the tubes I I.

At the rear of the structureis a hot air outlet chamber I6 communicating with a duct I1, and the latter may serve as a manifold for communi cation with branch ducts (not shown) leading to room areas to be heated by hot air.

At the top of the arcuate plate I (see Fig. 1) is an outlet I8 at which a steam or hot water pipe may be connected and which will lead, by suitable branches, to radiators. A safety blow-off valve is schematically indicated at I9.

A household-supply hot-water generating tube, which may be U-shaped, is placed in the water chamber of the structure, as shown at I 9, Fig. 1.

An inlet for feed water for the boiler is indicated at 20, and a draw-off outlet is indicated at 2|. Of course these may be reversed, as to position of use.

In the operation of the heat generator, combustion gases generated primarily in the fire box 6 and circulated through the chambers I and 8 will raise the temperature of water in the boiler to that desired either for steam or hot water heating, and at the same time will heat water circulated through hot water generator I9 for household use, the steam or hot water passing to radiators as customary.

The radiators may be located in rooms where withdrawal of cool air and its recirculation is not desirable, as in kitchens, bath rooms or laundries. For many uses the wet heat thus employed, may be considered as the secondary output of the generator, and dry heat its primary function.

When the boiler is thus put into action, fan I5 customarily thermostatically controlled from rooms calling for heat, will be thrown into action and cool air withdrawn from the rooms (as explained above) will be forced through the tubes and heated by conduction from their hot walls, aided by baffles I Im in the tubes, when such baffles are used. The hot air will be received by chamber I6 and will pass through duct l1 (and. branch ducts when used) to room hot air outlets.

In the modification shown in Fig. 1a the boiler construction is .the same as shown in the preceding figure and in Figs. 2 and 3, but the air heating elements are changed in that the tubes II are substituted for a large cylinder 22 which is internally baflied, preferably by a continuous metal strip spirally turned and welded to the inner wall of the cylinder. Such a, continuous spiral strip when out longitudinally, will be in sections generally of the form shown at 23, Fig. 1a. In that figure a branch cool air intake pipe is shown at 24, and branch hot air pipes or ducts are shown at 25. This form of air heat generator is of lower cost and more readily constructed than the form of Figs. 1, 2 and 3.

Having described my invention, what I desire to secure by Letters Patent, is as follows:

A combination wet and dry heat generator comprising an integral arcuate plate forming the side walls and top of a combined fire-box and combustion chamber, a water chamber within and laterally bounded by said arcuate plate, front and rear closure plates secured to the arcuate plate, hollow members having base flanges along their lower portions, said base flanges being connected to each other and to the front and rear closure walls, said hollow members forming a bottom for said Water chamber and providing relatively narrow spaced water-filled bafiles projecting into the fire-box and combustion chamber and extending from side to side of the arcuate plate, the upper areas of the front and rear 010- sure wall plates having a pair of horizontallyaligned apertures, a duct extending through said apertures and the water chamber and in heat transfer relationship with the latter, bafile means within said duct for directing air flowing therethrough into efficient heat transfer contact with the walls of the duct, a horizontal air inlet conduit at one end of the duct in communication therewith, a horizontal air discharge conduit at the other end of the duct and in communication therewith, said duct and conduits being in axial alignment, fan means for forcing air to be heated from said air inlet conduit through said duct to said air discharge conduit, and out-flow and inflow means communicating with said water chamber whereby hot water or steam may be withdrawn therefrom and then returned thereto after being circulated in the form of wet heat.

GEORGE AUSLANDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Great Britain Sept. 8, 1888

Images