US1323809A - Edwin g - Google Patents

Description

E. C. ANDERSON.

WARM AIR FURNACE.

APPLICATLQN FILED JULY 1,4. |5919;

IafeILfeL Dec. 2, 1919.

l=. H Skil n i EDWIN C. ANDERSON, OF ST. LOUIS, MISSOURI, ASSIGNOR IO THE BUCKS STOVE 8c VRANGE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

WARM-AIR runimcn.

To all whom t may concern:

Be it known that I, EDWIN C. ANDERSON, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in farm-Air Furnaces, of which the following is a full, clear, and exact description, such as will ein ble others skilled in theart to which it appertains to make and use the same. f

rihis invention relates to warm air furnaces ofthe type in which the smoke pipe leading from the combustion chamber passes through a cold air chamber through which cold air or cool air circulates when the furnace is in operation. Y

The main object of my invention isto provide a warm air furnace of the general type referred to which is so constructed that the cool air or unheated air in the cold air chamber will not come in contact with the smoke pipe leading from the combustion chamber, thereby insuring a proper circulation of airin the cold air chamber, due to the fact that the temperature of the inflowing cold air is not increased by the heat which radiates from the smoke pipe. K

Another object is to provide a warm air furnaceV of the general type referredv to which is equipped with means for conserving and `utilizing the heaty that radiates from the portion of the smoke pipe that passes through the cold air lchamber of the furnace through which the infloWing air circulates. Other objects and desirable features of my invention will be hereinafter pointed out. v

Figure l of the drawings is a perspective view, partly broken away, of a portion of a warm air furnace constructed in accordance Y with my invention.

Fig. 2 is a vertical sectional view of a portion of said furnace.

Fig. 8 is a horizontal sectional view, taken on approximately the line 3 3 of Fig. 2; and Fio'. 4C is a vertical longitudinal sectional view of one side of the furnace.r

Referring to the drawings which illustratethe preferred form of my invention, A designates the outer casing of my improved furnace and vB designates an innerl casing which is arranged inside of the casing A and spaced away therefrom so as to forma cold air chamber downthrough which cold air circulates, as indicated by the Specification of Iietters Patent.

arrows in FiO'. 2, when the furnace is in operation, said cold air passing into the lower end of an air heating chamber 3'/ and Vthence circulating upwardly through said heating chamber, as indicated by the arrows in Fig. 2. `The smoke pipe @that leads from the combustion chamber ofthe furnace prcjects'laterally through the inner casing B and through the outer casing A, thereby causing' a portion of said smoke pipe to be located inthe space between the inner and outer casings ofthe furnace. In the form of my inventionherein illustrated the smoke pipe C is provided with a depending portion C that cnstitutes a diving Hue that lies in the space between the inner casing B and outer casing A, but it is immaterial whether or not the smoke pipe is provided with a diving flue. Y

In order to prevent the cold air in the cold air chamber from being heated by the heat which radiates from the smoke pipe, I

have constructed the furnace in such a manv ner that the iniiowing cold air is prevented y Patented Dec. 2, agit?. Application led July 14, 1919. SerialNo. 310,734. Y I Y from coming in Contact with the portion of f the smoke pipe that liesin the space between the inner and outer casings of the furnace. Various means can vbe used for accomplishing this desirable result, but one convenient way of constructing the furnace is to incase the smoke pipe C and the depending portion C of saine in a chamber e formed by a housing arranged between `the inner and outer casings of the furnace and provided with two vertical side walls l, a top wall 2 and a bottonik wall 3, as shown in Figs. 2 and 3. The walls of said housing can lbe connected in any suitable manner to the outer casing A. and inner casing B of the furnace, and the opening in the inner casing B, through which the smoke pipe anddiving. iiue project is preferably made large enough so as to form an unobstructed passageway oetween the air heating chamber y and the chamber c that surrounds the smoke pipe, thereby causing the heat that radiates from the smoke pipe to be conserved and returned to the heating chamber g/ where it is utilized.

A warm air furnace of the construction above described lis more efficient than the furnaces of this generall type heretofore in use, in that there is no liability of the heat cold' air chainber a', and thus ,raising the Vtemperature of said'air to such an extent that it does not circulate properly through the cold-air chamber w. Such a furnace not only insures the airinatlie cold'air chamber e being kept cool, but it also conserves and utilizes the heat which radiates frein the' portion of the sinoke pipe that is locatedin i the lspace,between'the'iiiner and outer cas-` ings of the furnace, My invention is applicable to any type of Warin air furnace in vwhich the smoke `pipe from the coinbustion ychamber extends-through the passage- 'ivay through which cold .air is adinitted to the aiiheating chainber of the furnace; it is iininaterial Whether or not the sinoke pipe is provided with a diving flue and the particul lar lconstruction of the. housing` that incases the snioke pipe is iininaterial, so long as it V.prevents the infloiving cold air froincoinpassageway through which cold air is ad-V mitted to Vthe air heating chamber of the furnace, a smoke pipehaving a Vportion arl rangedin saidpassageway, and-means for preventing/the infiowing cold airV in Asaid )assao'eiva f' from coinin in contact with said sinoke pipe. i I 2, Warin an* furnace provided ivitha passageway throughV which cold'- air is'adinitted to -the airrlieating chainber 'of theYV furnace, asinoke pipe having a i portion arranged in said passageway, ineans for preventing the; inflowing cold airin said `passaoeway vfroni comingY in contact with said-sinoke pipe, vand n'ieans forV conserving and utilizing' the heat that radiates froin the portion of the sinoke pipe arranged in said passageway c v 3. A Wariniair furnace, comprising' an linner casing and an'outer casing spaced apart Vso as 'to' forni acold'air chamber, a sinoke pipefleading. froni the combustion chamber of the furnacel Vand projecting laterally through said ca'sings, and ineans "for preventing the cold air inj said` cold air charnpipe. Y

4. i Warni air furnace, comprising an inber froin coiiiin'gin contact with said sinoke ner' casing and anioutei-"casiiig spaced apart so -as Vto forni acold."airrchamber, a si'noke pipe leading from the combustion,l chainber of the furnace *andv projecting laterally througli'said'casiiigs, ineaiis for preventing the coldfair in said cold air chainber frein i coniing contactvv'ith said sinoke pipe, and

jineans for conserving and utilizing the heat that radiates fronithe portion of the snioke pipe arranged in the space between the inner and' outer casing of the furnace.

5. A Warm air furnace, comprising an air rounding saidair lieatiiigchainber, a sinoke pipe leading fr cin the combustion chainber of theffuriiace and provided with Ia portion arranged in said cold airochaii-iber, and a Aheating chamber, a-,cold `air chainber surhousing in saidcold air chamber that inoases- Y said siiioke pipe and prevents the-inflowing cold air Yfroni coiningin contact lwith saine.

6. A Warniair furnace, comprising an air heating. Vclianiber,a cold'- air chainber siii'- rouiiding said air heating chamber, a sinoke pipe' leading frein 4the combustion chaniber ofthe furnace and provided with a portion arranged-in said cold air chamber, a housing J in said coldairv chainberthat iucases said sinoke-Y pipe and prevents the infloiviiigfcold air frein comingin contact with saine, and a passage-Way; from the interior of 1 said hous-VK ing to said air heating chaniber.v ivf'. warni airV furnace, l'comprising an outer casing, Nan inner casing arranged in# 11 side ofsaid outercasing and spaced away therefrom so'as to forni a cold air chainber down through which Acold air circulates into theV lower end ofthe air: heating chainber formed-by: said inner casing,a sinoke pipe Y projecting laterally tliroughisaid inner andV Voutereasing and provided `with a diving. flue l locatedlprincipally in saidcold air chamber,

and a housing arranged between the `iiii'ierlV :aii'dvou-ter Vcasinigsv of thefurnace-for preventing the ini'ioiving cold air fifoni coining incontact with' said snioke pipe and diving flue, thexi-iiner casing ofthe furnace being y so constructed that the interiorofisaidA -lious-V ioo ing is in direct coininunicationwith the air heatingchaniber ofthe furnace. Y Y

EDWIN C. ANDERSON.

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