US2380000A - Magazine feed solid fuel heater - Google Patents

Description

A, K. wALToN E-rAL 2,380,000 MAGAZINE FEED SOLID FUEL HEATER July 10,1945

Filed Aug'. 11

2 Sheets-Sheet 1 Uhh.

llggn M.

July 10, 1945.

A.,K. WALTON ET AL MAGAZINE FEED SOLID FUEL HEATER Filed Aug. 1l, 1943 2 Sheets-Sheet 2 Patented July 10, 1945 UNITED STATE MAGAziNE FEED som) FUEL HEATE Arthur K. Walton andCecilErChesser, Newark, Ohio, assignors` to Newark Stove Company,

Newark, Ohio, a corporation of Ohio Application August 11, 194s, seria1'N0. 49s,15`s o 1 claim. fol.' 12s-73) Our invention relates to stoves, heaters and f furnaces, being adaptable for `space heaters as well as for hot air furnaces, water heaters and other heating appliances. More particularly our invention has to do with the type of heating device commonly known as a magazine stove, base fl burner, or self-Stoker.

In general this type of heater includes 'a cen-` trally disposed magazine for solid fuel such as coal, sawdust, briquets, etc., said magazine being in the form of a hopper into the top of which the I provides an annular combustionchamber. `The device may be circular, square or otherwise shaped as to its general cross-sectional contour. In operation, the fuel placed in the magazine rests on the grate and. is coked as it approaches the lower portion of the magazine, gaseous combustion tak- V e ing place mainly in the space above the fuel bed and within the annular combustion chamber.

One objectof the inventionis to provide a new and improved heater of the self-stoking type adapted to operate with greater efficiency than its predecessors. I I i I Another object of the invention is to provide in a heater ofthe type described an improved arrangement for holding in place a refractory lining for the magazine. .I

A further object of the invention is to provide improved means for feeding secondary air `into the gaseous products of combustion in `the annular combustion chamber with a view toproducing maximum heating efliciency. I

It is also an object of the invention to .provide for an additional supply of air feeding directly into the space above the fuelsupply in the hopper and passingtherefrom to the stack for carrying off gases formed in the hopper.

Other objects and advantages of theinvention will appear from the following description taken in connection with the drawings in which:

Fig. 1 isa vertical sectional View of a self-stoking heater, embodying this invention, being taken Fig. 5 is a perspective View of one of the lower tiles making up the refractory lining.

will be evident that various changes comingwithin` the spiritthereofmwill be apparent to those skilled in the art and hence we do not wish to be limited to the specic form shown or to the "particular uses `mentioned herein, except to the extent indicated by the appended claim.

For purposes `of illustrationthedrawings show a stove or space heater which `is of the radiant type, but it may be understood that a suitable air jacket or casing may be added to this structure if desired to cause it to operate as a circulating heater. As shown in Fig, 1 the structureincludes an outer wall or casing I supported on legs 2 and provided with an annular top 'v5/al1 3 `havinga removable cover ll for the centralopening in the top wall through which the fuel is introduced. Extending downwardly from the .top wall`3 in spaced relation to the outer wall I `is theshell 5 of the hopper or fuel magazine, and toward the lower end this shell includes a flared `portion 6 permitting the fuel to occupy a somewhat greater` cross-sectional areaat the lower portion than at ,thetop An annular flange or supporting ring il. extends inwardly from the lower portion ofthe "casing l andthe metallic `lire pot 8 `rests upon saidflange whilethe grate structure 9 inturn rests upon an annular shoulder I0 of there' pot 8. The flange l extendsinwardly and downwardly to `form a skirtllwhich `tends -to direct the ashes from the grate 9 intothe removable re- 1 i ceptacle l2 provided inthe? ash pit for that pur- I pose. A door `I3 in the front side of the casing I is dimensioned to permitremoval of the ash receptacle I2 when desired and throughthis` door access is also afforded to the shaker bar I4 for actuating the movable portion l5 arrangedslidably at the middle ofthe grate structure SI. Theash pit is closed by a bottom wall IE to whichv legs 2] are secured as seen in Fig. 1.

- and as shown it extends upwardly to about half theheight of the casing I abovethe level ofthe grate, being spaced inwardly from the casing wall I by a narrow annular air space I1 which tends to prevent overheating and disgurementof the outer surface of the casing I due to theproxirnity of the fires.` The cast re pot 8 is provided with inwardly extending lugs I8 `which support the lower tiles I9 of the refractory liningforthe fuel magazine or hopperl Preferably these tiles are six innumber and they aremade with rabbeted vertical edges which interengage as shownin Fig. 6 is a perspective View of one ofthe upper tiles for said lining.

Fig. `2. The lower `edges ofthe tiles I9 rest upon the lugs I8 and for definitely positioningthem these tiles may have notches 2U in theirlower edges, some of which will be positioned to register with the supporting lugs I8 and prevent thetiles from shifting circumferentially thereon. .The upper edges of the tiles `I 9 are also of rabbeted form so' as to interlap with I correspondingly formed lower edges of an `upper set of.` refractory tiles

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