US1600725A - Hot-air furnace - Google Patents

Description

Sept. .21 1926.

* v. FLAUS HOT AIR FURNACE Filed Feb. 18. 1926 Patented Sept.- 21, 1926.

UNIT/QED sra'rssf vrc ron FLAUS, or, WOODLAWN, PENNSYLVANIA.

nor-Am FURNACE.

Application filed February 18, 1926. Serial No. 89,035.

This invention relates to furnaces and more in particular to hot air heating furnaces for dwellings.

As is well known, in most hot air furnaces as built nowadays, the gases of combustion are discharged through the chimney with such rapidity that the greater part of heat is lost, thereby causing a great waste of fuel.

The primary object of this invention is to provide a hotair furnace in which the'gases of combustion may be retarded in their travel up the chimney a sufficient time to enable them to give up most of their heat to the heating-air.. Another object of this invention is to provide a furnace which is builtin such a manner as to act as a heat storage plant, after the supply of heat has been interrupted. A further object of this invention is to provide a hot air heating plant in which the air is heated by the furnace proper as well as by the chimney. Still a further object of this invention is to provide 'a furnace which is simple inconstruction and design and which can be manufactured from materials readily available anywhere, and at low cost. Additional features and ad-' vantages of this invention will appear from the following description, considered in connection with 1 the accompanying drawing forming part of this application and in gasesinta the smoke chamber 6;

Fig. .1 is a longitudinal section taken through the hot air furnace.

Fig. 2 is a fragmentary perspective view showing especially the outside appearance of chimney and flue portion of the furnace.

Fig. 3 is a'detail view, partly'in section, showing a by-pass pipe used in the chimney.

Fig. 4. is a view showing a section taken on line 4-4 in Fig. 1.

Fig. 5 represents a section taken on line 5-5, Fig. 1. V

' Fig. 6 is a cross-section showing a modified construction of a chimney and air flues used in my invention.

' Referring to the various figures, my hot air furnace comprises a heating element 1, the shell of which is made of cast iron or other suitable heat-radiating material, pos sessin'g a grate 2 uponwhichthe fuelis burntand a removable baffle-plate 21 slidably mounted on the rails'22 formed on the shell. In-this baffle-plate are provided'aper tures 23 for the passage of the comlgustirp n front of said shell are suitably located the I i usual fuel door 3 and the" ash door 4. The 210p 5 of the shell is closed and preferably Built above'the top '5 isthechimney 7 ATENT caries.

which'is vertical and perfectly straight and which traverses the various floors of the dwelling and discharges "the combustion gases above the roof thereof. This chimney is built of brick or'other suitable building material allowing the transmission of heat therethrough, while atthe same time also adapted to retain the once imparted heat for aconsiderable time. The lower end of the chimney is built upon suitable supports such as angle irons or the cross-beams 24, made preferably of refractory material and placed a short distance above the'heating element to enable the removal of the latter without disturbing the chimney. The bottom o f the latteris closed up by the partition 9 to prevent rain-water and soot from fallingon'top of the cast iron heating element, thus corroding the same and vitiating the heating air. 'A clean-out door 25' is shown for the removal of all impurities which may have accumulated on the bottom of the chimney.

' The gases of combustion are led from the smoke chamber6 into the chimney by means of a by-pass pipe '10, made of any desired openings 11 and 12 positioned respectively V and suitable materialfwhich connectsthe in'the back of the smoke-chamber '6 and a certain distance above the bottom'9fof the chimney. The by-pass is also provided with a damper 13 whereby the flow of-the combustion gases into the-chimney may be regulated to suit climatic conditions .and

the kind" of fuel used, or completelystopped'. The bypass and the damper also introduce, of course, a certain and permanent resistance against the velocity of travel of the combustion gases, so that the latter will'remain for a longer period injthe heating element, thereby favoring a more perfect transmission of heat to the'heating-air.

The latter is introduced through suitable inlet apertures 14 into the heating-chamber 15 which is made by building around the heating element 1 a brick structure represented by the walls 16 and the top 17 As the air is heated by'the shell of the heating element, ittravelsupwardly in the air flues 18 which run alongside the chimney '7 and which are also formed by bricksvalls, as

plainly shown in the variousfigures. It will be seen fiomiFig; 1 that, on account of leaving a certain space between the top 5 of the shell and the lower end of the chimney, the top 5, (which is the-hottest part of the heat-- ing element) radiates its full share of heat to the air, thereby enabling a complete use i of the whole surface of the heating, element '1. This feature also contributesto better equalization of the heat inthe air and a better circulation f-the latter around the heat ingielement,

At every floor of the dwelling, suitable hot air outlets 19,, having adjustable registers 20 are provided. It will be readily understood that this construction, the air whichhas been heated'inthe-heating chamber 15 will also absorb a considerable amount of heat from thesides ofthe chimney. This .fea ture, in itself affords a greatsavi-ng offuel,

as comparedto old types of hot/air furnaces wherethe airheated by the heating element loses .a good amount of its heat in its upward travel, to the variou fiQOrs. The hot air fines are, of course, carried only high enoughio supply the uppermost story with heat; they are therefore closed at the top by additional brick work, as .ShOyvn especially in Fig. '1.

- ed by founseparate air-fines.

. Where a great number-of roonisare to be 7 heated, especially if said reomsare situated atdifferent levels, it maybe fonnd desirable to use separate hpt air fines for the varions rooms oixfloprs. In this case, instead of usi g n ya fi a h w i: .l e's L and 5 especially, the chimney may be sur- "rounded with fines on allsides, as suggested in Fig. 6, which showsa chimney snrroundrom th il l ter constrnctionit will also he noted that an even greater economy of fuel, respectively a greater heating efiiciency,. nay be derived on account of surrounding the chimney withv air flueson ,all sides.

A hot .air fiirna ce built according to the' above, described invention, .enablesthe rapid heating ofahouse because, as the fire in. the heating elementl is started, the air will be quickly heated in ,the heating chamber by the shell of said heating element and reach the Various rooms rapidly. Asthe furnace keeps on burning fuel the walls o fthe chimney as well as of the air-ducts become also well heated, so that when-the fire is discon tinued, as is oftenv doneover night the various brick walls will release their absorbed heatandmaintainthewhole houseat a com- .fortable v--temperature until the following 7 j mornin While Ihave illustrated and described the preferred (embodiment of any .invention, and

one which I have foundbyectual use to be yerygpractical, it may-befound desirablein ti1ne;tomake slight changes in.- the construc- 7 tion and arrangement of the details of my nv nt en, a d I d tQ in lud i h pall such variationsas within the scope of the'appended claims.

I claim:

1 In a-"hot air furnace, the combination of a heating element having a grate and a shell with a closed top; an air-chamber surrounding said element; a vertical chimney having a closed bottom positioned a distance abo e, the top of the heat-ingelementya pluralityof hot air ducts disposed alongside of said chimney and in coinmuni-v cation with said air chamber; ai -removable baffle-plate adapted to divide the .SpaCQ above thegrate-of, said heating element into a. cgmbustion chamber and a smolieechamber positionedabove thelatter, said battle-plate having apertures to establish communicat o e we n a d ham e a a ypas Pipe tlas. d to connect. sa d, ismokec mber with said chimney. j

2. Inahot air furnace, thecoinbinatipn of a heating element having a grate and a shell with a closed; top; an air-chamber surchamber with said chimney, and rails posi ,tl OIIQCl inside-the ,shell of' the heating element vfor slidably supporting said hatileplate.

3. In a hot air-furnace the combination of a heating element having av grate and a a shell withaclosedtop; an air-chamber sury rounding said heating element; a vertical chimney having a closed bottom positioned a distance. aboVe-fthe top. of the heating element; aplurality ofhot air ducts disposed V alongside of said chimney; and in communication with said air-chamber; a removable baffle-plate adapted to divide the space above ,thegrate of said heating element into a-cq lbus ell-ehambe an a s a hambe positioned above theflatterhsaid baffle-plate having apeigtures. to establish communication. between lsaid Ch mbe a ok Q le connection positioned on a lateral side .Of said smoke-chamber, and a by-pass pipe communicating with said outlet connection and adapted-t0 connect .said. smoke'-chamber with .said .chimney' -r g a l H I 1; }hQ1' i furna e, the c m i a ion .of aheating element having a grate and a v.shell with alelosed top.; a brick structure 1 built around the heating element and adapted to form an air-chamber; a vertical chimney having a closed bottom positioned a distance above the top of the heating element; a plurality of cross-beams carried by said brick structure for supporting said chimney; a plurality of hot air ducts disposed alongside of said chimney and in communication with said air-chamber; means for distributing the air heated in the air chamber to the rooms of a dwelling; a removable baflle-plate adapted to divide the space above the grate of said heating element into a combustion-chamber and a smoke-chamber positioned above the latter,

15 said battle-plate having apertures to estabber; a bypass pipecommunicating With said outlet connection and adapted to connect said smoke-chamber With said chimney,

and means positioned in the bypass pipe to regulate the flow of combustion gases into said chimney. U

ture.

In testimony whereof I aflix' signa- VICTOR FLAUS. j

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