US1900570A - Furnace - Google Patents

Description

March 7, 1933. G. LEIMAN 1,900,570

FURNACE Filed'Nov. 2, 1929 F/ b l. 12 L F 972.

- INVENTOR 2 M ATTORNEYS Patented Mar. 7, 1933 UNITED STATES PATENT FOIF'FITCE,

ousravn LEIMAILOF NEW YORK, a. Y., nssronoa'ro LEIMAN 330s. me; or NEWARK,

. NEW JERSEY, A coaronnrron ornnw JERSEY ruarmcn Application filed Novemberfl, 1929. Serial No. 404,284;'

This invention relates to improvements in furnaces and more particularly to boilers of furnaces having oil burningdevices incorporated therewith. 7

? One object of the inventioniis to provide an attachment of hollow tubular formation capable of being applied to a boiler above the oil burning device and disposed in position to feed a column of air to the combustion chamber to increasethe volume of heat created in the chamber and reduce the noise caused by the Operation of the oil burner.

Another object is to provide a hollow tubular attachment having means applied thereto for regulating the volume of air passing therethrough.

Another object is to provide a hollow tubular attachment disposedin an inclined position in the combustion chamberand having air towardthe flame of the oil burner, thereby obtaining a balanced mixture of the air and fuel in the combustion chamber and as sistinginv the combustion of the fuel emitted from the oil burnenf 1 Another object is to provide 'certainimprovements in the form, construction and arrangement of "the parts whereby the above named and other objects may'efi'ectively be attained. 1 i

A practical embodiment of my invention is represented in the accompanying drawing, in which 'Fig. .1 represents a front elevation of a boiler having my improved attachment applied thereto and showing a nozzle of the oil buring device in section. I

Fig. 2 represents a side elevation of the same, partly in section. Fig. '3 represents a plan view, on

larged scale, of .my attachment.

Fig, l'xrepresents a front elevation of the same. i

p 7 Fig; 5 represents a longitudinal vertical section taken in the plane of the line VV bottom .plan

its lower wall cut away to direct a current of.

tical section of my attachment having a modifiedform of shutter pivoted therein;

The furnace maybe of any well-known or approved construction havingaboiler; d'e-. noted by 1, a base 2 for supporting the boilerand a combustion chamber 3 therein. The boiler is providedwith the usual clean out doors 4, 5,"and thebase has a'door6. The water inlet pipes for the boiler are denoted by 7, 8, while-the outlet pipes are denoted by 9, 10.- A smoke pipe ll i's secured to the top of the boiler in the usual manner.

An oil burner 12 of anywell-known or.- approved type'having a nozzle 13 is disposed l in position with the nozzle projecting a through a hole 14 in the door 6, from which nozzle the fuel is ignited anddirected into the combustion chamber Air from the exterior of the boiler is allowed to pass into the combustion chamber through a hollow tubular member composed of an upper wall 15, a lower wall 16, andside walls 17, 18; The walls are preferably disposed in rec-I tangular form in cross section, and provided at one end, with aperipheral flange 19, by which flange the member is secured in an opening 20 in the boiler. 1. :Themember' is inclined downwardly in-andi toward'the rear of the combustion chamber 3,so as .to direct the column of air passing therethrough into contact with the fuel. The lower wall 16 of the member has a portion cut away toform a V-shaped opening 21, the walls of which opening are widely separated'at 22 and con verge'to a point .23 located approximately abouttwo-thirds of the distance toward-the front of the member. This opening 21 allows a portion of the column of air passing through the member to be directed down wardly onto the ignited vfuel'emitted from the nozzle immediately below it.

. Asa means of restricting the column of. air passing through the hollow tubular member or to close the passage entirelyaI have shown in the present instance, a shutter 24 pivoted at 25 in the side walls. 17, 18 and arranged to swing toward and away from the upper wall 15 and lower wall 16, thereby controlling the volume of air passing through themember. The shutter 24 is closed 1 that the shutter will be allowed to swing, by.

gravity, on its pivot and cause the edge 29 to maintain its position in contact with the cam.

In Fig. 7 Ihave shown a. tubular member 31 having a shutter 32 pivoted at 33 and provided at its outer end'34 with a rod 35 screw threaded to receive a weight 36 adjustably (secured, in position thereon. In this form,

' the weight 36 may be moved on the rod-35 and the shutter 32 balanced so as to be held in position with the passage in the member normally open. The passage in the member may be closed by moving the weight 36 on its rod 35 toward'the shutter so that the inner end of the shutter will over-balance the outer end and weight, or a hook or other device, not

' shown, may be arranged to engage the outer iend-of the shutter to support the same.

While I have described the attachment for use in'conne'ction with-oil burning furnaces, Iwish it understood that the attachment may be used advantageously with a furnace having Tany gaseous or liquid burning device.

'It is obvious-that various changes may be resorted to in'the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the details herein shown and described except as the same are set forth in the claims. What I claim is: 1.. An air admission attachment for veritical tubular boilers including a firebox, a

base therefor and an oil burning device in the base, said attachment comprising a straight open ended tubular member having the inner end of one of its walls cut away to .form a. longitudinal opening therein and secured to the boiler in position to project into the firebox for admitting air thereinto, and a gravity operated shutter pivoted adjacent the outer end of said member and adapted 7170 be moved toward and away from said longitudinal opening in the wall of the memher by the draught in the boiler to control the amount of air passing through the memher to the firebox.

2. An air admission attachment for ver-.'

tical tubular boilers including a firebox, a base therefor and an oil burning device in the base, said attachment comprising a straight open ended tubular-member having the inner end of one of its walls cut away to form a to the firebox.

longitudinal opening therein and secured to the boiler in position to project into the firebox for admitting air thereinto, a gravity operated shutter pivoted adjacent the outer end of said member and adapted to be moved toward and away from said longitudinal opening in the wall of the member by the draught in the boiler to control the amount of air passing through the member to the V firebox, saidshutterhaving its upper end extending outwardly from the tubular member, and a device arranged to engage said upper end of said shutter to hold it out of operation 3. An air admission attachment for vertical tubular boilers including afireboxj abas'e therefor-and an oilburning device in the base, said-attachment comprising a straight open ended tubular member having the inner'end 'of its lower wall cut away to form a longitudinal opening therein and secured to the boiler .inposition to project into the-firebox for admitting air thereinto, and a counter-balanced gravity operated shutter pivoted adjacent the outer end'of said member and adapted to be moved'towardand' away from said longitudinal opening in the lower 1 wall of the member by the draught in the boiler to control the amount of air passing through the member to the'firebox.

4. An air admission attachment for vertical tubular boilers including a firebox, a base therefor and 'anoil burning device in the base, said attachment comprising a straight open ended tubular member having its lower wall cut away to. form a longitudinal open ingtherein and secured to the boiler in position to project intothe firebox for admitting air thereinto, a counterbalanced gravity op-- erated shutter pivoted adjacent the outer end ofsaid-member and adapted to be moved toward and away from 'said longitudinal 7 opening in the lower wall of the member by the draught in the boiler to control the amount of air passing through the member to the firebox, said shutter having its upper end extending outwardly from. the tubular member, and a device arrangedto engage.

said upper end of said shutter to hold it out ofoperation. V

5. An air admission attachment for vertical tubular boilers including afirebox, a base therefor and an oil burning device: in the base,

said attachment comprising a straight open ended tubularmember having its lower wall cut away to form a longitudinalopening progressively-increasing in width toward'the inner end, said member being secured to the boiler in position to project into the firebox for admitting air thereinto, and a gravity.

operated shutter pivoted adjacentthe-outer end of said member and adapted to be moved-- by: the draught in the boiler to control the amount of air passing through-the member 6. An air admission attachment for vertical tubular boilers including a firebox, a base therefor and an oil burning device in the base, said attachment comprising a straight open ended tubular member having its lower wall cut away to form a longitudinal opening progressively increasing in width toward the inner end, said member being secured to the boiler in position to project into the firebox for admitting air thereinto, a gravity operated shutter pivoted adjacent the outer end of said member and adapted to be moved by the draught in the boiler to control the amount of air passing through the member to the firebox, and a device for engaging said shutter to hold it out of operation.

7. An air admission attachment for vertical tubular boilers including a firebox, a base therefor and an oil burning device in the base, said attachment comprising a straight open ended tubular member having its lower wall cut away to form a longitudinal opening progressively increasing in width toward the inner end, said member being secured to the boiler in position to project downwardly into the firebox for admitting and directingv air toward the base, and a counterbalanced gravity operated shutter pivoted adjacent the outer end of said member and adapted to be moved by the draught in the boiler to control the amount of air passing through the member in the firebox.

8. An air admission attachment for vertical tubular boilers including a firebox, a base therefor and an oil burning device in the base, said attachment comprising a straight open ended tubular member having its lower wall cut away to form a longitudinal opening progressively increasing in width toward the inner end, said member being secured to the boiler in position to projectdownwardly into the firebox for admitting and directing air toward the base, counterbalanced gravity operated shutter pivoted adjacent the outer end of said member and adapted to be moved by the draught in the boiler to control the amountiof air passing through the t member in the firebox, and a device for engaging said shutter to hold it out of operation. 7

In testimony, that I claim the foregoing as my invention, I have signed my name this 25th day of October, 1929.

GUSTAVE LEIMAN.

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