US1352142A - Smoke-filter and force-draft device for furnaces - Google Patents

Description

H. R. PALMER.

SMOKE FILTER AND FORCE DRAFT DEVICE FOR FURNACES.

APPLICATION FILED 1 9 9 UG. 5| 1 I 1,352, 14:2, PatentdSept. 7, 1920.

k 2 SHEETS-$HEET l- 7'0 ,Bazlarws H. R. PALMER.

SMOKE FILTER AND FORCE DRAF T DEVICE FOR FURNACES.

. APPLICATION FILED AUGJS. 1919.

2SHEETSSHEET 2.

314 wank L Patented Sept. 7,1920.

V a citizen of the United States, residing at.

UHTED STAT SMOKE-FILTER AND FORGE-DRAFT DEVICE FOR FURNACES.

Specification of Letters Patent. I Patented gept; Z, 1920',

' Application filed August 15, 1919.} Serial no. 313,431.

To all whom it may concern:

Be it known that I, 'HARRY R. PALMER,

Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Smoke-Filters and Force-Draft Devices for Furnaces, of which the following is a specification.

My invention relates to improvements in a combined smoke filterer and force draft device for furnaces. r

The object of this invention is to provide an apparatus in which the cinders, soot and heavy gasesare thoroughly washed from the discharge of the furnace and this washing operation, taking all of the heavy particles from the furnacedischarge, lightens the remaining portion, which results in the'more rapid flow thereof through the stack and thus increases the capacity of the stack without increasing. the size thereof, and which necessarily increases the draft of the fur nace.

. Another object of my invention is to provide an apparatus of this character which can be readily applied to the ordinary furnace and which has certain details of structure and operation herein-after more fully set forth. v r In the accompanying drawing Figure 1 is a transverse horizontal sectional view of a furnace flue and stack showing my Vim proved apparatus applied thereto. Fig. 2 is an enlarged vertical view taken on the line 2-2 of Fig. 1. g Fig. 3 is an end view broken away. Referring now to the drawings; 1 represents the furnace flue which is connected to a furnace of thecharacter in which the load thereon-is rapidly varied and therefore it is necessary to rapidly increase the fuel consumption and the output of the furnace and bymy apparatus the draft ofthe furnace is instantaneously increased in either. a forced draft furnace or a natural draft, and thus increase theoutput of the furnace. The flue 1 is connected to the stack 2 which, is shown of a brick form, and which is usually of a considerable length to .in-

. furnaceand stack at an angle is a pipe 3 having a vertical partition 4. forming the two flnes 5 and 6. The flue 1 isprovided with a damper 7 opposite the portion 4: whereby the discharge ofthe furnace can be allowed to either passdirect to the stack 2 or diverted into the flue 5. T h'efl-ues 5 and 6 are provided with dampersSand 9 where'- by the draft through-the same can be readily regulated. p The outer end of the flue is connected to the vertical flue 10 which is preferably made of cement soas to be perfectly watertight. The sidewalls 11 and 12 of the flue 10 are provided with spray jets or nozzles 13,

which are staggered so the spray. from the nozzles on one side will overlap thesp'ray from the nozzles on the opposite sides and whereby the entire interior of the flue 10 is covered by the spray to fully wash the gases as they pass through the flue. The jets or nozzles 13 are connected to.the'supply pipes 14 and 15 through which either steam or water may pass to the jets or nozzles.

The lower endof the'flue 1O isconnected to elongated tank .16 formed) continuous therewith and in-whichis maintained a predetermined water level the purpose of which will be later described. 1 Beyond the lower end of the flue 10 the tank 16'is provided with a covered portion 17 the outer walls of which are extended downwardly as indicated at 18 into the water in thetank so'as to form a seal :to prevent the gases from passing from the tank. The tank beyond the wall 18 is open as clearly showninFig. 2 of the drawing. The end wall2O of the open portion of the tank is/provided with a series of pipes 21,22 and 23 communicating therewith, one above the other. and are, provided will not discharge on the spigot below.

The side of thetank is'provided with a dischar e 13c 25 b means of which the waterv and clnders, etc, may be discharged therefrom. The said pipe is provided with a valve 26 having an arm 27 the outer end'of which is provided with a horizontally, extending pin 28. Pivotally'carriedby the end-of the tank below the spigots is allev'er 2-9.which extends parallel with the discharge pipe and hasin one end an elongated slot through which the pin 28 extends. The lever 29 as shown is intermediately pivoted .at 31 and the other end is provided with a hereinafter more fully described.

The covered portion 17 of the tiLIlkzlS provided with an opening 33 which communie cates with the fan housing 3 1. The upper end of the fan housing is in communication with the funnel shaped member 35, which has 1ts upper end 1n communlcatlon with the lower end of the flue 6, and by means of which an additional draft is created. It may not be found necessary to employ a fan in which event the funnel shaped member will beof the shape shown in dottedlines Fig. 2, and extend down and communicate directly with the opening in the closed portion of the receptacle.

In operation the damper 7 is in the position shown in Fig. 1 of the drawings which causes the smoke, gases, etc., to pass into the flue 5, and thence downwardly through vertical flue 10. In its passage through this flue 10, the cinders, soot, etc., are thoroughly saturated with steam or water whichever is found desirable and fall into the Water in tank 16. This will relieve/the discharge of the furnace of all heavy particles and make it much lighter which. increases the draft in the stack and necessarily causesa greater fuel consumption. This also makes the discharge of the furnace much lighter in color which in some localities is very essential. The water from the spray nozzles keeps the tank filled to its predeterminedlevel which is very close to the'lower end of the wall of the flue so that a portion of the smoke and gases practically pass through the body of water. The fan aids passage of the smoke and gases around the lower end of the wall and draws it upwardly and discharges it into the lower end of the flue 6. It then passes from the flue 6 to the flue 1 beyond The spigot 24:, carried by one pipe is opened, that is the one carried bythe pipe arranged at the desired level sothat as soon as the water reaches said pipe it flows from the tank and fills the cup shaped member 32, so that the weight of the water therein overbalances the valve 26, opening the same through the medium of the levers 27 and 29, so that the water will flow from the tank through the pipe 25 carrying with it the cinders and other deposits in the tank. The

cup shaped member 32 is provided with an opening to allow the water to gradually flow therefrom and whereby the valve 26 is closed and prevents the water from passing from the tank until it has mined level.

This arrangement of parts insures a perreached the predeter- "fect washing of the gases-to "lighten the discharge of the furnace so that the draft of the stack will be increased. In the, event that the fan is not used, the natural draft of the stack draws the smoke and gases down through the flue around the wall and upwardly through the flue 6 and the smoke and gases having been freed of all solids, the draft in the stack is greatly increased.

Having. thus described my invention,

what I claim and desire to secure by Letters Patent, is 1. An apparatus .of the character de-' scribed, comprising a housing having an inlet at its upper end, spray nozzles arranged in the sides of the housing, a tank in communication'with the lower end of the housing, and having a portion thereof closed, and having a discharge opening in its upper end, a baffle plate between the housing and discharge opening, and means for main-- taining a predetermined water level in'said tank.- v w 2. An apparatus 'of the character 'de scribed comprising, a housing having an inlet at its upper end, spray nozzles arranged in the sides of the housing, a tankbelow the housing and in communication therewith, and extending'beyond one side thereof, and

a portion havinga closed upper end and having a discharge opening there1n,a baflie plate extending downwardly from the closed end of the tank intermediate the housing and the discharge opening, a discharge at the lower end of the tank, a valve in said discharge and means operated by the overflow of the tank for opening the valve and maintaining the water at a predetermined level. a

3. An apparatus of the character described, comprising a housing having an inlet at its upper end, spray nozzles arranged in the sides of the housing, a tankbelow the housing and in communication therewith and extending beyond one side thereof, and a portion ofthe tank havinga closed upper end sealed with the water in the tank, a fan in communication with the upper end of the closed portion of the tank, a discharge at the lower end of the opened portion of the tank, a valve controlling saiddis'charg'e, and V 2 means operated by the overflow of the tank for opening the valve and maintaining the water at a predetermined level.

4:. An apparatus of the character de-- said discharge, an intermediately pivoted 1 In testimony whereof I aflix my signature;

lever on the outside of the tank, means conin the presence of two Witnesses. necting one end of the lever to the Valve 7 V a cup shaped member carried by the oppo V HARRY ROOS E site end of the lever, and a series of spigots WVitnesses: V V communicating With the tank above the cup FLORENCE RAUcH,

shaped member, substantially as described. Gr. L. GULLMERRY.

It is hereby certified that in Letters Patent No.'1,352,142, granted September 7,

1920, for an improvement in Smoke-Filters and Force-Draft Devices for Furnaces, the name of the patentee is erroneously Written and printed as Harry Roos Palmer, Whereas said name should have been Written and printed as Harry Root Palmer; and that the said Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 17th day of May, A. D., 1921.

[SEAL] E. ROBERTSON,

Commissioner of Patents.

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