US838427A - Kiln-heating apparatus. - Google Patents

Description

w/TNESS si PATENTBD DEG. 11, 1906.

s., o. LARKINS.

KILN HEATING APPARATUS. APPLICATION FILED MAR. ao, 190e.

Arma/vers SAMUEL O. LARKINS, OF ROLAND PARK, MARYLAND.

KlLN-HEATING APPARATUS.

Specification of Letters Patent.

Patented Dec. 1 1, 190e.

Application filed March 30, 1906. Serial No. 308,864.

To all whom it may concern.-

Be it known that I, SAMUEL O. LARxrNs, a citizen of the United States, and a resident of Roland Park, in the county of Baltimore and State of Maryland, have invented a new and Improved Kiln-Heating Apparatus, of which the following is a specification.

My invention has to do with heating apparatus employed in lumber kilns or houses, and has for its object peculiar, novel, and improved apparatus of the character stated using steam as the heating medium.

The invention consists of the special construction shown by the accompanying drawings and hereinafter fully described, the features of novelty being pointed out in the ap ended claims.

An the drawings, Figure 1 is a detail view of my kiln-heating apparatus, the same being shown in side elevation. Fig. 2 is a vertical longitudinal sectional vienT through the heating-apparatus header. Fig. 3 is aside elevation of the header viewed from its radiatingpipe side, and Fig. 4 is a similar view of the header'viewed from its other side. Fig. 5 is a transverse vertical sectional view through the header, taken on line 5 5 of Fig. 2.

My improved heating apparatus is designed for arrangement in kilns or houses adapted for the reception of cars loaded with lumber to be dried. Kilns or houses of the general character stated are Well understood, and need not, therefore, be further referred to for a full understanding of my invention.

In the practice of my invention 'I employ a header 1, into which steam is conveyed, as will appear further on.

2 and 3 designate, respectively, upper and lower series of pipes or returncirculation radiating-tubes extending from the header 1, the same consisting of pipes 2a and 3b in the respective series, connected at their far ends from the header 1 by couplings 4, substantially as shown by Fig. 1. The several series of radiating-tubes 2 3 are arranged at an upward inclination from their connection with the header 1 and are cprovided with any suitable support 5 at their coupled end 4, as will be understood upon reference to Fig. l of my drawings.

Referring now to Fig. 2, it will be noticed that the header 1 is constructed with a serpentine transverse partition-Wall 6, dividing the interior of the header into chambers 7 8, made communicating through a passage-Way 9, and like chambers 10 11 made communieating through a passage-way 12. 13 denotes a pipe adapted to lead into the passageway 12, and 14 denotes a similar pipe adapted to lead into the passage-Way 9. The pipes 13 14 are provided with cut-off valves 15 16 and made communicating with a common supply-pipe 17. The latter pipe is designed to extend to any suitable steamgenerator, obvious and not necessary to illustrate, and is provided with a cut-off valve 17a.

According to my invention the up er pipe 2il in each loop of the series 2 thereo is made communicating with the header-chamber 7, and the lower pipe 2aL is made communicating with the header-chamber 10. The upper and lower pipes 3b of the series of loops 3 are arranged communicating with the respective header chambers 8 11, substantially as the pipes 2a communicate with the chambers 7 10.

It will be noticed (see Fig. 4) that the portions 18 of the partition-wall 6 extending longitudinally of the header are made inclining to common openings 19 through one vertical side of the header.

2O denotes a drain-pipe leading from the opening 19 in the chamber 8, and 21 a similar pipe leading from the opening 19 in the chamber 11.

22 denotes a branch pipe extending from the pipe 20 and leading into the chamber 7 through its opening 19, and 23 a similar pipe extending from the pipe 21 and leading into the chamber 10 through its opening 19. It is designed to extend the pipes 20 21 to any suitable hot-Wells or condensers 24 and provide them with cut-off valves 25 26, as shown by Fig. 3.

The construction of my improved heating apparatus Will be understood from the above description and its use rendered apparent by the following statement. In the use of my heating apparatus the valves 25 and 26 are closed, and the valve 17a in the steam-supply pipe 17 is opened. Now it is apparent that unless air contained in the header- chambers 7, 8, 10, and 11 and the series of radiating-loops 2 3 is exhausted best results are ICO royl

not likely to be had from all portions of the heating apparatus, owing to imperfect circulation of the steam, due to formation of airtraps, all as well understood.

In the use of my improved heating apparatus all the valves should be closed when starting operation. Upon opening the valve IIO 17 a, 15, and 16 steam is free to low through the pipe 14 into the chambers '7 and 8, and it is also free to flow simultaneously through the pipe 13 into the chambers 10 and 11.

5 Steam in said chambers obviously is free to flow therefrom to the respective drain- pipes 20, 21, 22, and 23. In order that the whole apparatus shall be free to be filled with highpressure steam, lthe valves 25 and 26 are lo opened as occasion requires to drain off water of condensation and any air that may-be `trapped in the several header-chambers.

My heating apparatus is peculiar and novel in that the series of radiating-loops 2 3 are arranged adapted for complete drainage of all condensation-water, and by reason of their peculiar pipe connections 2a and 3h with the respective steam-chambers 7 8 and 10 11 of theheader l when steam is turned zo on through the pipe 17 the whole heating apparatus will be lled with high-pressure steam, substantially as in the dome of a steam-boiler. i

I claim- 1. A heating apparatus comprising a header constructed with inner division-walls forming separated series of vertically-arranged communicating chambers, the chambers of one series being located between simi- 3o lar chambers of a separate series, drain-pipes with cut-ofi? valves leadingfrom the several chambers in the header, steam-conveying pipes leading into the respective series of header-chambers, cut-off valves in said steamconveying pipes, and heater-pipes providing communication for a chamber in one series thereof into a lower chamber of a separate series of chambers, the heater-pipes being arranged upwardly inclining from their connection with the header.

2. A heating apparatus comprising a header constructed with inner division-walls forming separated series of vertically-arranged communicating chambers, the chambers of one series ,being located between similar chambers of a separate series, drain-pipes with cut-0E valves leading Jfrom the several chambers in the header, the chambers being constructed with inner bottoms, made downwardly inclining to centrally-located discharge-openings, providing passage-ways into the drain-pipes, steam-conveying pipes leading into the respective series of header-chambers, cut-olf valves in said steam-conveying pipes, and heater-pipes providing open communication from a chamber inone series thereof to a lower chamber in a separate series oi" chambers, the heater-pipes being arranged upwardly inclining from their connection with the header.

SAMUEL O. LARKINS. Witnesses:

A. MCD. BURGrEss,l B, C. MALLARD.

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