US1400454A - Furnace - Google Patents

Description

H. H. PEEK.

FURNACE.

APPLICATION FILED APR. 12. 1920.

Patented Dec. 13, 1921.,

4 SHEETS-SHEET 1.

INVENTOR A'ITORNEY H. H. PEEK.

FURNACE.

APPLICATION HLED APR.I2,1920.

'1 ,400,454:.- Patented Dec. 13, 1921.

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H. H. PEEK.

FURNACE.

APPLICATION FILED APR.|2, 1920.

Patented Dec. 13, 1921.

4 SHEETS-SHEET 3.

ATTORNEY WITNESSES,

1 ,400,4:54. I 4 Patented Dec. 13, 1921.

SHEETS-SHEET 4.

INVENTOR ATTORNEY UNITED STATES PATENT OFFlCE.

HORACE H. PEEK, 0F CHATT ANOOGA, TENNESSEE.

FURNACE.

Application filed April 12,

To aZZ whom it may concern Be it known that I, Honacn H. PEEK, a citizen of the United States of America, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented new and useful Improvements in Furnaces, of which the following is a specification.

This invention relates to furnace constructions, and has foran object the provision of a down draft furnace, which is especially designed as a pipe heating furnace, although it will be apparent that it may be used for heating material or objects of any character.

Another object of the invention is the provision of a furnace in which the heat units are evenly distributed to all parts of the heating chamber or oven, so as to uniformly heat the contents thereof, this result being accomplished by novel arrangement of gas and fresh air distributing passages, the latter mixing with the products of combustion at the top of the bridge wall, to aid in the combustion of fine particles of fuel.

Another object is the provision of a fur nace in which the hot gases are taken out upon each side of the hearth through a plurality of passages, thereby insuring an even distribution throughout the oven.

A. further object is the provision of a plurality of separate damper controlled draft passages, with which the gas distributing passages communicate, the draft passages regulating through their dampers. the

amount of draft or suction from each end of the draft passage, so that the products of combustion may be drawn through the oven and distributed over the ovens contents at the proper degree.

Other objects and advantages of the in vention will appear as the following description is read in connection with the accompanying drawings,

In the drawings:

Figure 1 is a vertical sectional view through a furnace embodying the present invention, the section being taken on the line 11 of Fig. 2.

Fig. 2 is a horizontal sectional view on the line 22 of Fig. 1.

Fig. 3 is a vertical section on the line 3-3 of Fig. 2.

Fig. 4 is a horizontal section on the line 44 of Fig. 1.

Referring specifically to the drawings,

Specification of Letters Patent.

Patented Dec. 13, 1921.

1920. Serial No. 373,447.

wherein like characters of reference denote corresponding parts, the furnace comprises an outer casing, which is preferably formed of sheet steel and indicated at 10, an inner lining 11 of asbestos, a second lining 12 of red brick, within which is placed an additional lining of firebrick 13. lVhile this provides a very effective construction of heat insulating wall, it is not the purpose of the present application to be confined to this particular structure, which may be varied as cesired.

Located in one end of the furnace is a pair of fire boxes 14, to which access is attained through feed doors 15 located upon opposite sides of the furnace, the fire boxes being separated by a wall 16. Beneath the fireboxes and separated therefrom by a grate 17 is an ash pit 18, which may extend the entire width of the furnace beneath both fire boxes and be provided with a door at each end.

Also located within the fnurnace is a heating chamber or oven 19, the latter being separated from the fire boxes 17 by means of a bridge wall 20. The oven 19 extends the entire width of the furnace and is provided at one end with a charging door 21 and at its opposite end with a discharging door 22. Extending over the tops of both fire boxes 17 and the oven 19, is a crown or dome 23, the curvature of which directs the products of combustion which rise fromthe fire boxes 17, across the bridge wall and downward into the heating chamber or oven 19.

For the purpose of supplying fresh air to the interior of the furnace for mixture with the gases, and to aid in consuming the line particles of fuel, there i provided beneath the oven extending transversely of the furnace, a fresh air inlet 24. This fresh air inlet is in the form of a passage open at each end and communicating with this passage is a plurality of spaced passages 25, both the passages 24 and 25 being horizontally arranged. Each of the last mentioned passages is provided with oppositely and inwardly extending passages 26, which meet and communicate with vertical passages 27 extending upwardly through the bridge wall 20 and opening at the top thereof. The fresh air is thus delivered to the hot gases a they rise from the fire box and between the said fire box and the oven.

Extending from the opposite sides of the oven 19 is a number of horizontally alined openings 28, these openings being arranged an appreciable distance below the top of the walls of the oven, and communicating with verticallyarranged passages 29. They passages 29 extend downwardly and at their bottoms communicate with horizontally ar ranged draft passages 30, the passages 29 being arranged oppositely and in pairs and each pair beingin communication with an individual draft passage. The passages 30 have one end open to the atmosphere as indicated at 31'and have their opposite ends in communication with the flue 32, so that a draft is established through the passages 30, which will suck the gases through the passages 29 at each side of the oven 19. Each draft passage 30 is provided with a damper 88 for controlling the draft and by manipulating each of the dampers, the distribution of heat through the oven may be regulated.

The invention is susceptible of various changes in its form, proportions and minor details of construction, and the right is herein reserved to make such changes as properly fall within the Scope of the appended claims. 7

Having described the invention what is claimed is v ,1. A furnace comprising a casing, a heating chamber or oven located therein, a fire box located at oneside of the oven and separated therefrom by a bridge wall, a crown wall or dome covering the oven, and fire box for directing the products of combustion from the latter across the bridge wall into the former, fresh air passages opening through the top of the bridge wall and a plurality of passages connecting with the oven through the side walls in a plane below the fresh air inlets for conducting the gases to the atmosphere.

2. A furnace, comprising a casing, a heating chamber or oven located therein, a fire box located at one side of the oven and separated therefrom by a bridge wall, a crown wall or dome covering the oven and fire box for directing the products of combustion from the latter across the bridge wall, spaced vertical draft passages arranged upon opposite sides of and communicating with the oven through said walls at a point below the top thereof, longitudinal passages extending between the oven and establishing communication between the verticalgas passages and the atmosphere and fresh air passages extending through the bridge wall and opening through the .top of the latter for mixing fresh air. with the products of combustion.

3. A furnace comprising a fire box, a heating chamber or oven, means for directing the products of combustion from the fire box into the top of the oven, air'passages for directing a supply of fresh air into the path of the products of combustionbefore they enter the oven, a plurality of gas passages leading from the oven and separate damper controlled passages communicating with the gas passages and open at both ends to the atmosphere. Y

4. A furnace comprising a casing, a heat ing chamber located therein, a firebox 1a cated at one side of said chamber and sepa:

rated therefrom by a bridge wall, a crown wall covering the chamber and fire boxfor directing the products of combustion from the latter across the bridge wall into the formenfresh air passages entering through the top of the bridge wall anda plurality of damper controlled passageshorizontally arranged beneath said fresh air inlets and curved at one end for conducting the gases to the atmosphere. p i

In testimony whereof I affix my signature.- 7 7 VHORACE H. PEEK;

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