US1393493A

US1393493A - Open-hearth furnace

Info

Publication number: US1393493A
Application number: US307469A
Authority: US
Inventors: Vere B Browne
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-06-28
Filing date: 1919-06-28
Publication date: 1921-10-11
Anticipated expiration: 1938-10-11

Description

V. B. BROWNE.

OPEN HEABTH FURNACE.

APPLICATION F|LED.|UNE28 1919- RENEWED AUG- 8, 1921- gm mg; r I Patented m M9 mm.

2 SHEETS-SHEET l.

WITNESSES V. B. BROWNE.

OPEN HEARTH FURNACE.

APPLICATION FILE-D JUNE 28. 1919- RENEWED AUG. 8.1921.

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specification of Letters Patent.

Patented tlct. ill, T921.

Application flled tune'tt, W19, Nerlal No. 307,469. Nenewed August a, 1921. Serial No. M0309.

' I To all whom it may concern."

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Be it known that T, Venn B. Browne, a citizen of the United States, and a resident of Tarentum in the county of Allegheny and State of f ennsylvania have made a new and useful lnvention in dpen-lfllearth Furnaces, of which the following is a specification. a

This invention relates to improvements in open hearth furnaces and has as an object the provision of certain new arrangements whereby powdered fuel (such as powdered coal) may be used with a material decrease in the clogging of the checkers over that occurrin in the present arrangements.

A. further object is the provision of a furnace of the above type in which the checker work is located entirely above the ground level thus enabling relatively easy repairs and renewals.

These, as well as other obfects which will readily appear to those skil ed in this particular art ll attain in the furnace described in the specification and illustrated in the drawings accompanying and forming a part of this application.

In the drawings, Figure 1 is a longitudinal vertical section of a furnace embodying this invention and Fig. 2 is a longitudinal horizontal section taken at a point just above the hearth.

.The furnace consists of a hearth 3 of.

ordinary construction supported on the foundation 4 andprovided with a roof 5. A checker work regenerator 6 connects with one end of the hearth by means of flue 7 of novel construction while a checker work regenerator 8 connects with the other end of the hearth by means of a flue 9 of similar novel construction.

Powdered fuel, such as powdered coal, is forced into the combustion chamber above the hearth through ports or nozzles 10 (preferably water cooled) of suitable size and number and which are positioned so as to discharge the fuel at the proper angle into the combustion chamber. K

Each of the flues 7 and 9 is constructed with a central wall 11 having a ort 12 extending therethrough. The wal thus. converts each flue into an up and down-take having a connecting port. The space below the bottom of the port is a dead air space and serves to collect the ash and other solid matter carried through the flue toward the checker brick with the products of combustion. Each of the separate chambers of the separator is provided with tracks 13 for slag cars 14. x

The checker work will merely be used to regenerate the air and if desired each end of the furnace may be provided with an extra checker Work 15 in order to serve as a spare regenerator. If it becomes necessary to clean out or repair one of the main regenerators without stopping the operation of the furnace this may be done by opening up port 16 which connects spare regenerator 15 with .one of the flues 7 or 9 and when this is done opening 17 will be closed as shown at 18, Flg. 2. The furnace is provided with a suitable stack 19, valves 20 and 21 and dampers 20*, 20 and 20 for reversing the operation of the regenerators.

Each regenerator is provided with a cleaning door indicated by circle 22 and since these are located above the ground level 23 the checker work may be repaired or renewed from time to time without dismantling the entire regenerators as is now customary.

The products of combustion passing through the flue to the regenerator in striking the partition between the up and downtake has its direction changed and the solids tend to fall down along the partition wall to the dead air space at the bottom of the down-take. Tn crossing through the port 12 to the up-take the direction is again changed and the solids impinging on the far wall of the up-take tend to fall down along said wall to the dead air space at the bottom of the up-take. The flue with its central partition, which serves as a baflie, acts in the nature of a separator. The solids and heavy particles contained in the gases fall into the dead air spaces and the effective efiicient life of the regenerators is increased over those now in use. The terms up and down-take as just used apply to each flue when it is being utilized to convey the products of combustion to a regenerator. When these flues are used for conveying heated air from the regenerator to the hearth or to the combustion chamber above the hearth the portions of the flue of course will be reversed and what before was the down-take becomes the uptake, etc.

In accordance with the provisions of the patent statutes T have described the principle of the operation ofrny invention, to-

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llllll ltlll llllh gether with the device which I now consider to represent the best embodiment thereof, but I desire to have it understood that the device shown is only illustrative and that the invention can be carried out in other wa s.

aving thus described my invention what I claim is- 1. The combination with a hearth. of regenerators arranged to be alternately utilized and central walls each provided with a through port to form separators between said hearth and said regen'erators.

2. The combination with a hearth, of regenerators arranged to be alternately utilized and separators between said hearth and said regenerators each having an up and down-take formed by a central wall bafile provided with a through port.

3. The combination with a hearth of a regenerator arranged at each end of said hearth, an additional regenerator located adjacent one of the first-mentioned regenerators, and a central wall to form a pair of separating chambers between each regenerator and the hearth.

4. The combination with ahearth, of regenerators arranged to be alternately utilized and located above the ground level and a separator between said hearth and each regenerator provided with two dead air pockets.

5. The combination with a furnace hearth, of regenerators arranged to be alternately utilized, separators arranged between said- VERE B. BaowNE.

the roof thereof and at an inclina-