US1120536A - Oil-fuel heater. - Google Patents

Description

J. REICHENBACH.

OIL FUEL HEATER.

APPLICATION FILED JULY 14, 1913.

1,126,536, Patented Dec. 8, 1914.

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THE NORRIS PETERS :0 PHUTO-LITHO WASHING rmv r\ r JOSEPH BEICI-IENBAGI-I, OF NEW WESTMINSTER, BRITISH COLUMBIA, CANADA.

OIL-FUEL HEATER.

Specification of Letters Patent.

Patented Dec. 3, 1914.

Application filed July 14, 1913. Serial N0. 778,976.

To all whom "it may concern Be it known that I, Josnrn REICHENBAGH, a citizen of the Dominion of Canada, residing at New Westminster, in the Province of British Columbia, Canada, have invented certain new and useful Improvements. in Oil-Fuel Heaters, of which the following is a specification.

This invention relates to a device for initially heating the fuel oil in an oil burning system where that system is applied to the generation of steam in a boiler and where steam from that boiler is applied to vaporize or atomize the oil on delivery to the combustion chamber. It is designed as an improvement to the device on which application for patent was filed on the 20th September, 1912, under Serial No. TQlAH and is now pending before the Office, the improvement being directed to render the apparatus more safe to meet the requirements of the Fire Underwriters. This is attained by substituting a paraflin burner for the gasolene burner used in the oil heating coil of the previous device above referred to and provision for insuring effective combustion of the heavier hydrocarbon by heating the air for its consumption prior to delivery and by providing a means for absolutely controlling the admission of air to the burner and the delivery of the heated gases therefrom.

The invention is particularly described in the following specification, reference being made to the drawings by which it'is accompanied, in which:

Figure l is a general arrangement showing the application of my device to the oil fuel burner of a steam generator. Fig. 2 1s a vertical longitudinal section through the heating coil of the boiler service and its correlated parts. Fig. 3 is a plan view of a portion of the device hereinafter identified.

Fig. at is a section on the line d-l on Fig. 2,

generated in the boiler to operate the normal oil service pump. This initial heating was accomplished by circulating the oil by a hand operated circulating pump 6 through a heating coil 8, receiving the oil through a pipe 5 from the service pipe 3 of the burner the oil heating coil 8 is inclosed within a cylindrical chamber 9 having a heat nonconducting lining, and the upper end of this chamber is closed by an apertured end plate 10 on which-is rotatable a correspondingly apertured damper plate 11, which is pivotally mounted in the center of the plate 10 on the stem 12 which secures to that end plate the bulbous bafde 19 of the coil. This damper plate controls the delivery of the heated gases from the coil cylinder.

The cylindrical coil chamber 9 rests upon the upper end 22 of the air heating chamber 20 within which chamber an inner bafile cylinder 21 depends from the apertured end 2:2, which battle cylinder is concentric with the coil cylinder 9 and the air heating chem ber 20. It is secured to the end 22 by the same bolts which secure the coil cylinder to it and terminates at a short distance from the bottom or base plate 23 of the chamber. Over the apertures of the end 22, which apertures are outside of the coil cylinder, a valve plate at is rotatable having apertures registering with those of 22, that the admission of air to within the air chamber may be regulated. The base plate 23 of the air chamber is supported on legs 25'within a catch plate 26 having upwardly turned edgeswhich plate is similarly supported on kgslat a convenient height above the floor eve Within the lower part of the batlie cylinder 21 is a paraffin oil burner 29 which receives its supply of oil through a pipe 30 from an oil reservoir 31, the pipe 30 being introduced into the upper end of the reservoir and extends downward to near the bottom. A moderate air pressure sufiicient to deliver the oil from this reservoir through the pipe 30 to the burner 29 is maintained within the reservoir 31 by a hand air pump 32 which delivers compressed air into the upper end of the reservoir through the pipe 33. Oil is charged into the reservoir 31 through a filling funnel 34 the pipe connection of which is closed by a stop cook 35.

top cocks 36 and 37 arealso furnished on the air delivery pipe 33 and the oil pipe 30 to the coil heating burner. The reservoir 31, pump 32 and oilcirculating pump 6 are all mounted on a catch tray 26 sothat any drip or leakage of oil does not: fall to the floor. i

The oil reservoir 31 hasa gage 38 that the pressure of air withinthat reservoir maybe time in contact with the coil.

where the pipe 3 leads down to the boiler burner 4i l/Vhen this preheating device is to be used as when it is required to get up steam in the boiler, the stop cook 15 is closed cutting cit admission of oil to the burner 4 until it has'been heated and is under a certain expansive pressure, the stop cook 14 is opened admitting the 'oil from the service pipe 3 to the preheating coil '8 through the pipe 5. The required air pressure'is by the hand pump 32 acquired in the oil reservoir 31, and the coil burner 29 is ignited through the hand door 17. Air admission is given to that burner by the apertured damper plate 24. The flame from the burner 29 passing up through the coil 8 heats the oil in that pipe and it may be circulated by the pump 6 until it hasattained the necessary temperature and pressure to spray'the oil etlectively through the boilerburner 4, when admission to that burner from the circulating pipe is given by opening the stop cook 15. The admission of air to the coil heating burner 29 is controlled by the damper plate 24and the air passing downward therethrough has to pass under the lower edge of the cylindrical battle 21 and upward around the burner 29 in which movement it becomes sufliciently heated to insure satisfactory combustion. The delivery to the atmosphere of the products of combustion after they have passed through the heating coil 8 is regulated by the damper plate 11 so.

as to retain the'heated gases for a sufiicient The delivery of the oil heated in the coil to the burner 4 is continued until a sufficient pressure of,

steam is obtained in the boiler tooperate the normal oil service pump. When this is as new and desire to be attained the function for which the preheating system, which is the subject of this application, has been accomplished. The oil to the burner 29 is then cut 015? by closing the stop cook 37, the damper plate 24 is closed and the heating flame is at once extinguished. Thestop cook 14 is closed cutting oli this preheating system and the normal oil service of the boiler is carried on by the steam operated pump.

The system is free from complication and i is thoroughly effective in that it enables the oil fuel to be used for initially generatingv steam .in the boiler, a service which has heretofore been accomplished by kindling a fire in the grate, and as soon as sufiicient steam pressure has been generated in the boiler to operate the normal oil fuel service, this supplementary service can be simply cut out. q I

. By providing the air heating chamberyl am enabled to use a distillate in the oil burner having a safe flash point and by having control of the air admission to this burner and of the products of combustion therefrom, every precaution is provided for cutting off the air supply and extinguishing the flame when occasionmay require. The

provision of a catch tray under all the parts where leakage of the oil may occur is a further precaution for safety against fire.

I am aware that devices have previously been used for preheating oil before its delivery to its burner in order to insure a moreeffective vaporization of the oil, 'butI make no claim broadly to this. application, but to the construction herein set forth by which this supplementary oil heating service may be conveniently applied to an oil burning system for initially generating steam in the boiler.

Having now particularly described my inventiomlhe'reby declare that What I claim protected in by Let-- ters Patent, is:

1. An oil fuel heater, comprising the combination with a heating c0il,-a casing of non-conducting material inclosing the heat-' ing coil said casing having apertures in its upper end, an air heating chamber on which the heat ng coll casing is secured and with which it is in direct communication said air' chamber having a bafile secured to itsupper end and downwardly projecting therefrom to a short distance from the bottom and having also apertures in-the upper end delivering from the outside into the" space around the battle, means for heating the coil.

2. An oil fuel heater, comprising the combination with a heating co1l, a cylindrical casing inclosing the heating coil said casing having'closable apertures in its upper end, an air heating cylinder on which the heating coil casing is mounted and with the centralpart of which casing it is indirect communication said air cylinder having a cylindrical bafile secured to the upper end and downwardly projecting therefrom to a short distance from the bottom and having closable apertures in the upper end delivering into the annular space around the bafile, a burner adjacent to the base of the coil and adjustable means for closing said closable apertures.

3. An oil fuel heater comprising a substantially closed air heating drum provided with apertures in its top Wall, and a shutter plate for controlling the area of said apertures, a heating coil mounted above said drum, a heat non-conducting cylinder mounted on the top of said drum to inclose said coil and retain said shutter plate in position, said cylinder having its upper end provided with apertures, a damper plate for controlling the area of said cylinder apertures, a burner mounted within said drum, and an inner baffle cylinder depending from the top of said drum and enveloping said burner, said inner bafile cylinder being spaced from the bottom of said drum to leave an air passage, said drum having an opening in its top for effecting communication between said inner baffle cylinder and said coil cylinder.

4:. An oil fuel heater comprising a substantially closed air heating drum provided with apertures in its top wall, and a shutter plate for controlling the area of said apertures, a heating coil mounted above said drum, a heat non-conducting cylinder mounted on the top of said drum to inclose said coil and retain said shutter plate in position, said cylinder having its upper end provided with apertures, a damper plate for controlling the area of said cylinder apertures, a burner mounted Within said drum, and an inner baffle cylinder depending from the top of said drum and enveloping said burner, said inner bafile cylinder being spaced from the bottom of said drum to leave an air passage, said drum having an opening in its top for effecting communication between said inner baflle cylinder and said coil cylinder, and means for supplying fuel to said burner, means for forcing the' oil to be heated through said coil, said fuel supplying means for said burner including a. fuel reservoir, means for delivering the fuel from the reservoir to the burner, and a catch tray in which all of the aforesaid parts are mounted, substantially as shown and for the purposes described.

In testimony whereof I affix my signature in presence of two Witnesses.

JOSEPH REIOHENBACH.

Witnesses ROWLAND BRITTAIN, MAY WHYTE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). Or.

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