US1315582A - A cobpobation - Google Patents

Description

L. N. STAGY.

INCINERATOR.

APPLICATION msn MAY lo. 1915.

Patented Sept. 9, 1919.

2 S MEETS- E. N. STACY.

INCINERATOR. APPLICATION min MAY10'.19|5.

Patented Sept. 9, 1919.

2 SHEETS-SHEET 2 UNITED sTATEs PATENT oEEIoE.

ELMEB N. STACY, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO DECARIE INCINERATOR COMPANY, OF MINNEAPOLIS, MINNESOTA; A CORPORATION.

INCINERATOR.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application led May 10, 1915. Serial No.- 27,237.

To aZZ whom t may concern:

Be it known thatI I, ELMER il. STACY, citizenof the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Incinerators, of which the following is a specification.

The object of my invention is to provide improved means for utilizing a forced draft to be directed through the grate and combustion chamber of the incinerator, with improved means for pre-heating the air before reaching said chamber.

A further object is to provide improved means for app ying a suction or induced draft through the iiues leading from the combustion chamber,'these dra-ft appliances being active or inactive, as desired, and operalble independently of one another.

A further and particular object is to provide means for introducing a volume of pure air into the products of combustion flue to -mix with the hot gases and promote and accelerate the combustion thereof.

The invention consists generally in va- A ratus,

Fig. 3 is a vertical sectional view on the line wof Fig. 1, and a--z of Fig. 2, and

Fig. 4 is a similar view on the line y--jz/ of Fig. 1, also looking in the direction of the arrow.

In the drawing, 2 represents the wall of the building in which the incinerating apparatus is located, and 3 is the incinerator proper, having a combustion chamber 4 wherein the header 5 and circulating pipes 6 are arranged. v Beneath the header are the grates 7 having pits 8, 9 and 10 beneath them, separated by partitions or walls 1l. A licor 12 forms the bottom of these pits and beneath this floor I provide a chamber 13.

Adjacent to the combustion chamber is a chamber 14 wherein the pre-heater is arranged, composed of flue sheets 15 and tlues 16 between these sheets. A cold air intake trunk 17 leads through the wall of the building to the space between the flue sheets 15 and a trunk 18 communicates with this space and with a force fan 19 which in turn communicates through a passage 20 with the chamber 13 (Fig. By means of this fan the cold air is dra-wn in through the pipe 17, circulates among the flues 16 and is delivered in an' expanded heated condition to the chamber 13. From this chamber pipes 21 extend to the pit 10 and trunks 22 lead from the chamber 13 to the pits 8 and 9 and through these pipes and trunks a volume of heated air will be forced through the crate bars and into the 'combustion chamber to form a forced draft and hasten combustion. I also provide a pipe 22 leading upwardly from the passage 20 and having depending ends 22l for discharging heated air into the mixing chamber 23 adjacent to the passage through which the products of combustion flow from the chamber 4. This heated air lmixes with the products of' combustion in the chamber 23 and promotes and accelerates the combustion of the heated gases. I regard this arrangement for delivering the volume of air to the flue and the hot gases as an important feature of my invention.

A mixing chamber 23 is provided in the rear of the combustion chamber and communicates therewith through a passage 24, and a checkered wall 25 separates the chamber 23 from the chamber 26. The checkered wall will become incandescent in the operation of theincinerator and aid materially in accelerating combustion of the hot gases mixed with the fresh air and coming in contact with this wall. From this chamber 26 a 4liuc 27 having a damper 28 therein opens into a flue 34 which leads to the stack flue 38. A passage 30 (Fig. 4) leads from the chamber 26 into the chamber 14, sufficient space being provided in the bottom of this chamber to allow precipita-tion of ashes and soot. The gases and products of combustion from the chamber 14 pass through the fiues 16 to a chamber 31 (Figs. 2 and 4) above these flues which communicates through a trunk 32 with a suction or induced draft fan 33 from which a trunk 34 leads to the stackilue 38 of the stack 29. A valve 35 4is provided in the trunk 32 for shutting off the passage therethrough, and a trunk 36 (Fig.

2) leads from the chamber 31 to the stacklue v38 of the stack and is provided with a valve 37 which, when opened, allows the products of combustion to flow directly to the stack through the stack-flue 38 without passing to the fan 33.

With the foregoing described apparatus I am able to utilize the hot gases for pre-heating the incoming cold air before its delivery to the lower part of the combustion chamber and at the same time I can deliver a quantity of this air to the products of combustion flue to mix with the gases therein and eiect a more perfect combustion thereof. I am also able by `means of the suction fan to establish an induced draft andI accelerate the flow of the products of combustion from the incinerator. When preferred, the natural draft may be utilized, the products of combustion passing directly to the stack.

In-various ways the details of construc-y tion herein shown and described may be modified andstill be within the scope of my invention.

I claim as my invention:

chamber, a mixin chamber, and an outlet from the former discharging into the latter,

a preheater having a cold air intake, a blast fan mounted to receive air from said preheater, an air trunk leading from said fan to the lower portionA of said combustion chamber and having a branch leading to said mixing chamber for mixing air with the heated gases, a, iue, having communication with the mixln chamber and leading to a stack, and a va ve controlled exit flue in indirect communication with the mixing chamber through the preheater..

2. An incinerator having a combustion chamber, a mixing chamber, and an outlet from the former discharging into the latter, a preheater having a cold alr intake, a blast fan mounted to' receive air from said preheater, an air trunk leading from said fan to the lower portion of said combustion Ychamber and having a branch leading to 'said mixing chamber for mixing air with the heated gases, a flue, having a damper, in communication with the mixing` chamber and leading to a stack, a valve controlled a damper, in

exit flue in indirect communication with the from the former discharging into the latter,

apre-heater having a cold air intake, a blast fan mounted to receive air from said preheater, an air trunk leadingV from said fan to the lower` portion of said combustion chamber and having a branch leading to said mixing chamber for mixing air with the heated gases, a checkered wall in said mixing chamber, a flue having a damper and incommunication with the mixing chamber for the direct passage of products of combustion to a stack without passing through the preheater, an exit iiue in indirect communication with the mixing chamber through the preheater, and a suction fan for said exit flue.

4. An incinerator having a combustion chamber, an outlet for the products of com bustion and a mixing chamber into which the products of combustion discharge, a preheater in communication with the mixing chamber and having a cold air intake, a blast fan mounted to receive air from said preheater, an air trunk leading from said fan to the lower portion of said combustion chamber, and a branch pipe leading from said air trunk and having downwardly turned end portions for discharging heated air into said mixing chamber.

5. An incinerator having a .combustion chamber, a mixing chamber, and an outlet from the former into the latter, a preheater in communication with the mixing chamber,

a blast fan and air conduit for transmission of air from the preheater to the lower portion of the combustion chamber, a flue, having a damper, in communication with the mixing chamber and leading to a stack, a

lue,vhaving a damper, and leading from the 9.

preheater to a stack, and a valve controlled exit flue in indirect communication with the mixing chamber through the preheater and provided with a suction fan.

In witness whereof, I have hereunto set l my hand this 4th day of May 1915.

ELMER N. STACY.

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