US1490518A - Warm-air furnace - Google Patents

Description

A N 15 1924. wg

D. W. PAYNE WARM ATP. FURNACE File d May 29. 1922 Patented Apr. l5, EQZQ.

ATENTv names. w. PAYNE, or LOS sue-anus, camronma, ASSIGNOB 'ro rAYNE summon a SUPPLY 00.. or LOS anonam,.canmonm. A CORPORATION on canmonma wanna-am; summon Application filed May 29,

T all whom it may concern:

Be it known that I, DANIEL W. PAYNE,

a citizen of the United States, residing at.

Los Angeles, in the county of Los Angeles, State ofCalifornia, have invented certain new and useful Improvements in Warm- Air Furnaces, of which the following is a specification.

This inventionhas to do with furnaces for heating air for houses and the like; and it is a general object of the invention to provide a furnace of high heat efiiciency.

Among other and more particular objects of the invention, it is an object to provide W an arrangement and construction to revent condensation of moisture taking p 8.00

at any point within the furnace.

Further objects of the invention, and the features of accomplishment of the inven- W tion, will all be best understood from the fOllOWiIlg detailed description of a specific and preferred form of furnace which embodies the invention, reference for this purpose bein had to the accompanying draw- 95 in s, inw ich:--

ig. 1 is a plan section taken as indicated by line-1l on Fig. 2; and Fig. 2 is a vertical section taken as indicated by line 22 on Fig. 1. j

An outer casing is shown at 10, this casing having side walls and a top and arranged to rest upon the floor. Within this outercasing there is a downwardly extending wall 11; and air entering the openings 86 at 12 passes down between the outer casing and wall 11, to the lower edge of wall 11, and thence under that lower edge and up through and around the interior parts of the furnace.

it The heating burner of the furnace is shown at 15; located in the lower part of a combustion box 16, ot configuration as shown in the drawings. The lower part of this box 16 is narrower in width than the upper part, and the burner is located substantially whelly in this narrower lower part. Horizontal shoulders are provided at 17 in t e combustion. hon; on the inner edge e" these horizontal shoulders upwardly ailing walls erected, lie wall is what as ibrick of upper ed.

1922. Serial No. 564,488.

inverted channel 19, to hold the ba'file in place. i

Outside these baflles, and located just above the shoulders 17, are several outlets 20, leading to the lower ends of an equal number of vertical fines 21. These fiues 21 W are connected at their upper ends b horizontal pipes 22 with an outlet cham er 23, from which the draft flue or stack 24 finally carries away the ases of combustion.

Extending vertically through each one of the flues 21, there is an air tube 25, open at its bottom to entry of air, and open at its top to deliver air out into the upper part of the air casing 10. It will be noted that the air casing surrounds the interior structure in such a way as to leave an air space all around; so that air that enters the air casing, as. before described, can pass all around the interior structure. Also it will be noted that the several flues 21 are spaced apart and are spaced away from the oombustion-box 16; so that air can pass all around the fiues and can pass all around the combustion-box' and also around the pipes 22 and the outlet chamber 23. Consequently, as will be readily recognized, there is an easy and free flow of air upwardl through the whole interior s ace, all aroun the heated parts; and also 0 course through the air tubes25. The heated air passes 0d through air pipes 30 which connect with the top of the air casing.

The coolest air is that at the bottoms of tubes 25, and around the bottoms of dues 21, andaround the outlets 20. It is here that condensation of moisture in the gases of combustion is most likely to take place, if the gases of combustion are cooled below a certain point. Sudden cooling of the gases of combustion below a certain temperature causes deposition of moisture in the passages. l have provided against this, however, by delivering the gases, while they substantially their highest temperstu into the lowermost parts of tines 21;

set the gases that thus come into canwith the coolest air are comps and are not cooled to the cor Another feature is this." as will be noted, one o thedues 21., then r without any out such would 93] nee s is hold condensation that would be deposited at the bottom of the downward movement. Thus, in in present arrangement, any condensation t at tends to take place, is carried alon with the upwardly moving streams 0% combustion gases, and carried out of the furnace without any opportunity of deposit.

Another feature of the furnace is this: The combustion-box 16 is large enough to allow the gases of combustion to fully expand and therefore to come to a uniform igh temperature. These gases of uniform high temperature then pass downwardly outside of battle walls 18 into the outlets, as before described. The bame walls 18 thus provide for two things; in the first place they cause the gases of combustion to travel first to the upper part of combustion-box, with opportunity to acquire a uniform high temperature, and prevent combustion gases of extremely high temperature from going directly from the burner to the outlet 20; and they also shield the side walls of the combustion-box, and the outlet 20, against the intense direct radiation effects from the burner. These baflie walls 18, bein constructed of firebrick, also hold a consi erable amount of heat, and thus again tend to make the heatin uniform. The heat of the gases of combustion, however, is not at all lost, as it is radiated to the bafie walls 18 andto the exterior walls of the combustion box, and all of this is of course eventually radiated or conducted out into the surrounding upwardly moving stream of air. But the point I wish to make in this connection is this: That this heat is radiated at a uniform high temperature, but not at an excessively high temperature; so that the air is heated uniformly, without any danger of i being overheated or parched. Also the result of this arran ement is that the gases of combustion --'elivered into dues 21 are of a uniform high temperature, but not or too high a temperature. Thus the result of all this arrangement, wherein the gases of" combustion are uniformly heated, and wherein the air is uniformly and freely distributed around and over all of the heating surfaces, is uniformly and thoroughly warm the air to a proper temperature, without any danger of overheating or parching the air at any point, and also without an opportunity for condensation deposit ta ing place any point within the furnace.

The burners may be controlled by the valve control means indicated at 36, outside the air casing.

Having described a. preferred form of my invention, 1 claim:

1. An air warming furnace that includes an outer air casing and an enclosed furnace structure, the furnace structure embodying a combustion box with heating means therein, a chamber surrounding the furnace structure, formed by inner walls extending downwardly from the top of the outer casing to adjacent its bottom and spaced from its -vertical walls, the outer casing having openings adjacent its top to feed air downwardly through the passage formed between it and the inner walls and beneath the bottom edges of said walls, a plurality of vertical combustion fiues extending upwardly from the lower part of the combustion box, intermediate said box and the inner walls, and connecting at the top with an outlet, each of said lines have in an air passage extending longitudinally throu h its vertical portion,

2. in air warming furnace that includes an outer air casing and an enclosed furnace structure, the furnace structure embodying.

a combustion box with heating means therein, an inner chamber, surrounding the furnace structure, formed by inner walls extending downwardly from the top of the outer casing to adjacent its bottom and spaced from its vertical walls to form air passages therebetween, openings in the outer casing adjacent its top to admit air to said passages, a plurality of vertical combustion lines extending upwardly from the sides of the combustion box, from points adjacent its bottom, and connecting at the top with a common outlet, said i ues extending between the combustion box and said inner walls, each of said having an air extending longitudinally through its vertical portion, from points acent the bottom edges of the inner walls to points spaced from the top of the outer casing, and warm air openings extending from the top of the inner chamber.

Tn witness that l claim the foregoin T 0 6 have hereunto subscribed my name this 5th day of Me 1922..

DANIEL W. PAYNE.

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