US1569811A - Air heater for furnaces - Google Patents

Description

Jan. 12 1926. 1,569,811

E. JORDAN AIR HEATER FOR FURNACES Filed Dec. 12, 1924 wy a II A '22 21 I 1 .16 m 9 wnmassas INVENTOR -Z'mesi Jordan.

' ATTORNEYS Patented Jan. 12, 1926.

uurreo STATES ERNEST JORDAN, or nnwYon N. Y.

AIR HEATER FOR FURNACES.

Application filed December 12, 1924. Serial No. 755,515.

To all whomc't may concern:

Beit known that I, ERNns'r JORDAN, a citizen of the United States, and a resident of the cityv of New York, Richmond Hill, borough of Queensfln the county of Queens and State of New York, have invented a new and Improved Air Heater for Furnaces, of which the following is a full, clear, and exact description.

This invention. relates to air heaters for furnaces andhas for an object to provide an improved construction wherein not only heatedair may be readily provided above the bed; of coals in the furnace but the volume may be regulated.

' Another object of the inventionis to providean attachment for furnaces which may be connected with the furnace door and which will-supply heated air above the bed of coals in the furnace.

A further object, more specifically, is to provide a device for supplying heated air to furnaces wherein there is substantially no loss of heat units in heating the air previous to its entrance into the furnace.

In the accompanying drawing- Figure 1 is. aperspective view of an air heater embodying the invention, the same being shown appliedto a furnace door.

Figure 2 is an elevation of one endofthe heater shown in Figure 1, the same being on an enlarged scale.

Figure 3 is a sectional view through Figure 2, on line 3-3.

Fig. 4c is a fragmentary sectional view through Figure 3 on line l--4.

, Figure 5 is a sectional view through Figure 3 on line 55.'

In heating furnaces and particularly the usualheating furnaces in dwellings, coal is used as the fuel. In order for the coal to burn properly, a proper draught must be provided and, consequently, much of the valuable fuel is driven off as gas before the same becomes highly heated or before the same becomes consumed. To obviate this loss, numerous devices have been provided for supplying air to mix with this gas whereby it may become combustible.

In the present invention, an improved structure is disclosed in the accompanying drawing wherein heated air is supplied a short distance above the bed of coals and the air is heated to substantially the same temperature as the gas whereby there will be produced a chemical affinity between the gas and the air resulting in the ignition of the gas and a long flame. In order .to accomplish this result without deprivingthe furnace of any heat units, the heateris connected to a furnace door 1, whichdoords provided with the usual sliding shutter or damper 2 and with a foraminous plate 3. All of the openings inthe plate 3 are closed with fire clay, asbestos .or other .material except the group within the based. The base 4 is provided with a circumferential flange 5 adapted to fit flatwise against the plate 3 and be bolted or otherwise rigidly secured thereto by the various bolts 6 acting on the angle clamps 7. ,By this construction and arrangement, the device may be readily applied or removedat any time without injuring any part of the furnace. Thebase 4, together with part of the plate 3, forms an. intake chamber 8 which receives air through the various. openings 9 and through the openings of theshutter 2. The

base at merges into a forwardly extending body 10which has passage-ways extending therethrough hereinafter. fully described, said passageways being in free communication with chamber 8 whereby the air isled out over the bedof coals 11 and finally discharged out the opening '12. The body 10 is providedwith a deflectingloop or projection 13 wherebythe heated air is deflected downward y an, is ther y caused t m more readily wit the hot gases as they rise from the bed of coals 11.

In forming the device, the same is preferably formed into two parts, namely, the upper part 14 and the lower part 15. These parts may be formed in any desired manner but for the sake of cheapness are preferably cast. The upper part 14 merges in the upper part of the base 4, said upper part 14 having a flat plate as shown in Figure 1 and with an aperture 16 extending longitudinally thereof from the base elto point 17. The part 15 merges into the lower part of base a and presents a pair of channels or passage-ways 18 and 19 which open into the chamber 8. These passageways or channels merge into a front chamber 20 from which the heated air is discharged out the opening 12 which is in the form of a slit as air to travel from chamber 8 to chamber 20 in thin sheets, depending webs or flanges 21 and 22 extend downwardly from the plate 23 forming part of the structure 14.

shown in Figure 1. In order to cause the As indicated in Figures 2 and 5, the positioning of the flanges 21 and 22 as just described, causes substantially V-shaped passage-ways to be presented or rather eonverge the passage-ways l8 and 19 into V- shaped openings through which the air passes from chamber to chamber 20. As all parts of the device are heated by the flame from the bed oi coals 11, the side walls of members 18 and 1!), the plates 23 and flanges 21 and 22, all produce a heating action on the air as it moves toward the discharge opening 12 As all oil the heat used in heating the devices and also in heating the air is returned to a position above the bed of coals by the discharge of the air through opening l2, none of the heat units are lost but, on the contrary, the gases rising from the bed of coals will become ignited as the heated air mixes therewith. In this way, a maximum number of heat units are secured from a given quantity of coal and all of the heat units are used in causing the :l'urnaee to function in the usual manner.

What I claim is:

1. In an air heater for furnaces, a body formed with a pair of substantially V shaped members presenting passage-ways extending to near the center of the furnace, and a plate covering said passage-ways, said plate being provided with a depending flange extending centrally into each of the passage-ways for dividing each passage-way into substantially two parts, said plate overlapping said Vshaped member at the inner end for deflecting air from said passageways downwardly.

2. A11 air heater for furnaces, comprising a base formed into upper and lower parts, the upper part comprising a base section, a

plate extending substantially at right angles therefrom having a lon itudinal slit for part of its length, an overhanging lip at one end, and a pair of parallel depending flanges, the other of said parts being pro vided with. a pair of substantially V-shaped passage-ways accm'ninodating said flanges, and a base section co-acting with the first mentioned base section for 'lForining an intake air chamber and a bolt extending through said slit engaging said upper and lower parts for clamping said parts together at any point along the slit.

3. An air heater for furnaces, comprising an upper and lower part, said upper part being formed with a base section presenting part of a chamber and a bolt receiving flange, said upper part being also provided with a plate having a longitudinal slit therein and a depending outer end, the lower part being formed with a base section coacting with the base section in the upper part for forming an air reception chamber, means extending from the last mentioned base section forming parallel V-shaped passage-ways, each of said passage-ways having a notch at the outer end, said upper plate fitting flatwise against said members and formed with longitudinally positioned flanges projecting into said members for substantially dividing the passage-ways therein so as to reduce the volume of air passing therefrom whereby more heat units in proportion may be absorbed by the air as it passes through the passage-ways and is finally deflected by said depending portion, and a bolt fitting against said members and extending through said slit for clamping said upper and lower parts together.

ERNEST JORDAN.

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