US1500505A - Vent structure for furnaces - Google Patents

Description

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G. F. LENK VENT STRUCTURE FOR FURNACES Filed Sept. 29, 1923 2 Sheets-Sheet l Jul 8 1924. 1,500,505

G. F. LENK VENT STRUCTURE FOR FURNACES Filed Sept. 29 192-3 2 Sheets-Sheet 2 naces.

Patented July 8, 19.24.

ens RLE'NK, or nAL nA's, TEXAS.

-VE1\TT STRUCTURE FOR FURNACES.

Application filed September 29, 1923.- S'e-rial No. 665,616.

To all whom/it may concern Be it known that 1, Gus F. LENK, citizen of theUnited States of America, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Vent- Structures for Furnaces, of which the following i is a specification.

This invention relates to new and useful improvements in vent structures for fur- In the operation of furnaces it is desired to conserve the heat and prevent as much as is possible, its dissipation by radiation and to this end insulation is inserted in the furnace walls. While this is effective,

the temperature around the furnace is usually 'exceedingly high, according to the intensity of the fire. The object of my invention is to vent the furnace walls by includinga space over the "fire arch andcirculating airthrough said space.

A further object is to reduce thetemperature around the furnace by carrying off -the hot air through a vent opening in the furnace*walhthrough which vent outside air is drawn.

Another object is todischarge the circulatory air into the smoke stack. independently of the furnace gasesywhereby circulation is 1 promoted.

Aparticular object of the invention is to cool the working floor above the arch and also to'cool themetal charging hoppers.

An advantage of the invention is that by I utilizing the vertical fiue passage andtaking in the air from the furnace all the advan E tages of an 'artificial mechanical suction sys- 118111 arehadwithout the expense of installation or operation thereof.

A construction designed to carry'outthe invention will be hereinafter described together with other features of the invention.

' The invention will be more readily understood from-a reading of the following specificationand by reference to the accompanying drawings, in which an example of the in vention is shownyand wherein: V

Fig. 1 is a transverse" sectional View of a furnace constructed in accordance with my invention,

Fig. 2 is a longitudinal sectional view of the same, and

Fig. 3 is a plan view, the roof being broken away to show the air chambers.

burning chamber.

center of the burning chamber. the baffle wall and the side wall 14 consump- In the drawings the numeral 10 designates the base or bottom of an incinerator or furnace. A front wall 11 and a back wall 12 e-xtend upwardly and are connected byside walls 13 and'll respectively, all of which extend upwardly from the base. The

tion grates 20 are provided. 1 Ash pits 18 and 20 are provided under the grates 18 and 20 respectively.

In the lower forward portion of the burning chamber an arched opening 21 is provided, contiguous to the surface of the ad- JtLCGIlt grate 20. The details of the burning chamber are not considered essential as the same issubject to considerable variation, however the side escape of the products of combustio-ns or gases over the grates is important.

Contiguous to the side wall 14 is built airauxiliary combustion. chamber formed by -a floor 22 an outer wall 28, a front wall 11,

a rear wall 12 and an arch 24-. The coin- "bustionchamber is of course lined with re fractory material. In'the wall 12 is formed a vertical opening orflue entrance 25 which is considerablyles's in width than the chamher and has its upper end some distance below the arch 24.

The arch 15 is covered on its upper side with a layer 26 of suitable insulating niaterial and the arcli 2 1 likewise has a similar "covering 27. Between the coverings and the roof or floor 17 is an air chamber 28. It is pointed out that this air chamber extends over the entire interior of the furnace.

In the right handend (Fig. 3) of the front wall 11 and above the burning chamber I provide an air adinittingduct 29 and a similar duct 30 is provided in the front wall 11, which'latter is in fact a continuation and part of the front wall 11. Air is admitted to the air chamber by these two ducts, and after circulating therein passes which are immediately under the floor, the

hot air from in front of the incinerator is carried off and a circulation set up which promotes a lower temperature around the furnace. The air passing through the chamber 28 will keep the floor 17 cool and carry off the excess heat therefrom. This circulation will also cool the hopper lining 16 of the charging holes. An incinerator equipped with this air chamber will have a longer life and function more satisfactorily. It is obvious that the vertical passage 33 in the stack will cause a good circulation through the chamber 28.

Various changes in the arrangement and structure of the different elements as well as modifications and alterations, may be made within the scope of the appended claims.

W hat I claim is:

1. In a furnace, the combination with a burning chamber having a fire arch covering its top, a floor above the arch, and a stack having a central smoke conduit, of an air chamber extending over the arch between the chamber and the floor, said chamber having an air admitting opening in one end and an outlet at the opposite end free from connection with the conduit of the stack. I i

2. In a furnace, the combination with a burning chamber having a fire arch covering its top, a combustion chamber connecting with the burning chamber and having an arch covering its top, of a floor above the arches, air admitting ducts for the chamber above each arch, a vertical air passage in the stack of the furnace separate from the smoke conduit thereof and ducts contiguous to the arches leading into said passage.

3. In a furnace, the combination of a burning chamber, having a fire arch at its top, a combustion chamber having an arch at its top, a stack connected with the com bustion chamber and having a vertical smoke conduit, and a floor above the arches, an air chamber extending over the entire interior of the furnace between the arches and the floor and having an air admitting opening at one end and an air outlet at its opposite end, said outlet being free from connection with the conduit of the stack.

4. In a furnace, the combination of a burning chamber, having a fire arch at its top, a combustion chamber having an arch' at its top, a stack connected with the combustion chamber having a vertical smoke conduit, a floor above the arches, an air chamber extending over the entire interlor of the furnace between the arches and the floor and having an air admitting opening at one end and an air outlet at its opposite end, and a vertical air passage in the stack separate from the conduit with which the chamber outlet connects.

5. In a furnace, the combination of a burning chamber having a front wall and an arch at its top, a stack having a vertical smoke conduit, and a floor above the arch, an air chamber between the arch and the floor, an air admitting duct in the front wall above the arch leading to the chamber, a vertical air passage in the stack separate from the conduit, and an air outlet duct leading from the chamber to the air passage of the stack.

6. In a furnace, the combination of a burning chamber having a front wall and an arch at its top, a combustion chamber having a front wall and an arch at its top,

a floor spaced above the arches, a stack con-V nected with'the combustion chamber and having a smoke conduit, an air chamber extending horizontally between the arches and the floor, an air admitting duct in the front wall of the burning chamber between the arch and the floor, a second air admitting duct in the front wall of the combustion chamber between the arch thereof and the floor, both of said ducts leading to the air chamber, a pair of air outlet ducts leading through the sides of the stack from the air chamber, and a vertical air passage in the stack separate from the conduit into which said outlet ducts discharge.

7. In a furnace having a burning chamber with an air chamber above and separate from the burning chamber and a floor above the air chamber, said air chamber having an air inlet immediately under the floor and an outlet for creating a draft through the air chamber.

8. In a furnace having a burning chamber with an air chamber above and separate from the burning chamber, a floor above the air chamber, and a stack having a smoke conduit connected with the burning chamber, the air chamber having an air inlet at one side and an air outlet at the other side and being free from connection withthe burning chamber or'the smoke conduit of the stack. 7

In testimony whereof I affix my signature.

en s F. LjENK.

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