US2517258A

US2517258A - Furnace refractory support

Info

Publication number: US2517258A
Application number: US564871A
Authority: US
Inventors: Charles E Towner
Original assignee: Crane Co
Current assignee: Crane Co
Priority date: 1944-11-23
Filing date: 1944-11-23
Publication date: 1950-08-01
Anticipated expiration: 1967-08-01

Description

Aug. 1, 1950 c. E. TOWNER FURNACE REFRACTORY SUPPORT 2 Sheets-Sheet 1 Filed NOV. 23, 1944 H y m, Wm H w u m JWJ. 2 W Mm wm E R Q N m Aug. 1, 1950 Filed Nov. 23, 1944 Patented Aug. 1, 1950 UNITED STATES creme EURNAEE"REFRACTORYSUPPORT Cha o s. Oak Lawn, Ill essi p n a L -neCc, flhic g r l i, a mrationpf Illincisr Application November 23, 19514; Serial- Nor 564, 87!- 61 Gi nna- 1 Thisqinvention; relates toarefractory I support 017;;the like, and more'particularly itapplies to a efract r u p r r us with i such heatina devices as boilers. or furnaces employing vaporizing wburuers r w th the pes. of banners ernploying ga s or'stoker feed andjsimilar fuel media.

This inventionapplies particularly to-. an installation inwhich the type of boiler 01' furnace:

with which thedevice-is associated is restricted at its lower portion; to relatively small clearances and wherein; the overhead; space. provided: is: like Wise aha-premium, In; the latter connection in' order-to; obtain a-greaterappreciation of the y contribution; made by this; invention; it should be realized that previously with theremoval of a vertically mounted oil burner; for purposes of inspection orrepair, the former methods of making oil burner installations, for example, required at least 3 clearance below thelburher to allow for such removal. However, in: contrast'to the requirement just referred to with the sectional type of. novel refractory support as hereinafter described. in greater detail, the 011101 other type of burnercan be removed horizontally andwithlittle orno-clearance provisionfor such removal. The latter-convenient methodofremoval also avoids the. usual damageor breakage to the refractory. When the burner is1 removed for repair or inspection. In the present invention the. proposedrefractory support is positioned and. formed so as to minimizelthet-damage thereto when the burner is removed.

A further importantobject of my invention is to; provide ;a refractor support permitting complete access; to the burner vaporizing pot without necessarily disturbing the-refractory hearth.

A further object is to provide a refractory support in which the hearth formedtherewith comprises preferably twoor more sections, a larger section being suitable for attachment to a boiler or the like and with: a smaller section attachable to the oil burner or other similar device.

Another object is to provide a device of the character describedin which when it becomesnecessary to remove the oil burner for reasons above mentioned, the oil line and power 11m. may be simply disconnected and the burner can then bemoved in a horizontal. plane outwardly with the smaller hearth section attached thereto until thevoilburner assemblyis free of the boiler.

A= further important object is to provide a hearth construction possessing such flexibility so-as to be capable of being applied to either rounduorsquare-boilers or furnaces. l

Furthenimportant obj ects and advantages will becomemore readi'l'y apparent in connection with a: reading: 01" the followingr description read; in

light of 'thel accompanying drawings; in which Fig. 1 iszan exterior perspective-viewof anv oilburner u'nit embodying the novel refractory; support toi'my invention, andwith theunit almost? entirely withdrawn from w the: boiler.

Fig. 2 is'a view of 'the reiractory detached from the-boilerandfshowing; the hearth and burner in operative-position.

Fig. 3=is an exterior perspectiveview of the;

novels sectional. frame tor support of" therefractory-a i Similar.- reference characters refer to similar parts throughout-the: several views.

Referring: now.- to' Eig Lin which a lower ex terior fragmentary view of aboiler l is-shown;

the lowenwallof the boiler is provided with a recess orrcutout wallopening 2- below whichthe' refractory: hearth: support generally designated A is mountedand through which th'e centrali- The burner isconnected to the movable refractory element; the means of attachment being hereinafter described-f The novel hearth structure of this invention con portion of the burner moves.

sists essentially of two'parts, one of which is stationary and the other movable.

substantiallyof circular'form and is-designatedit,

but its shape will vary; in accordance with thedevice with which it-cooperates. A smaller ele ment is associated with a burner unit and moves The larger section 3 is fixedly attached to the boiler and the smaller section is attached to the burner transversely Within the larger-element}.

pot, the burner assembly being generally desig; nated 5. The burner and. controls are preferably mounted on a common draft tube iifor "the air supply, as indicated, the draft tube being fixedlyj attached to a lower-portion of the burner assem I bly 5 so as to be movable-together as a unit.

the completed bottom hearth, when assembled,

The larger{ stationary portion which is fitted in abutting relationwith the lower portion of the boilerisfor the burner, the refractory being molded or applied in the usual manner to fill the respective hollow portions of the

frames

3 and 4. The relatively smaller frame section 4 is slidable within the stationary frame member 3 by means of the flanged guide i and is supported by,the draft tube upon which the burner 5 and its indicated controls are mounted. The attachment of the smaller movable frame section of the refractory 8 to the burner pot is accomplished by means of suitable bolts (not shown) engaging the flanges 9 and thereby drawing the hoop H securely around the neck flange 12 of the burner, as shown in Fig. 1.

In order to close the aperture or cut-out wall opening 2 in the boiler, it may be desirable to provide an arcuately extending upwardly projecting shoulder portion l3 in the refractory 8 as indicated, to fill the opening 2 of the boiler when the burner is in the operating position shown in Fig. 2. However, it is clear that this construction will vary depending upon the type of boiler employed. Above the level of the flange H! the boiler is generally provided with the inspection or'access door opening which is normally closed by a hinged door (not shown). Thus it is clear that the

respective frame sections

3 and 4, when assembled, form the bottom portion of the fire chamber of the boiler. The outer end shoulder portion l3 fills the recess or cut-out wall opening 2 of the boiler, the latter recess being made sufi'iciently high to permit the upper part of the burner pot to pass through into the boiler fire chamber. The boiler is suitably supported on legs, not shown, the space between the floor and the bottom of the boiler being sufficient to establish clearance to allow for horizontal move ment of the unit 5 when being withdrawn. The combined burner unit 5 and the draft tube 6 may be provided with the supporting adjustable legs l4 to permit of a nice adjustment with the fire chamber of the boiler and a close fit between the shoulder l3 and the recess 2.

As more clearly shown in Fig. 3, it is apparent that the hearth refractory support mounting is relatively simple and sturdy and the side guide extension iii allows for easy and accurate movability when it becomes necessary to inspect or to repair the burner unit 5. In small boilers in which clearances are held to relatively small di- 3 mensions the advantages of this construction will be quite obvious. It should also be understood that the detailed form and the manner in which the support is provided -may vary substantially depending upon the type of installation used,

and I desire therefore to be limited only to the scope of the appended claims.

I claim? 1. A hearth structure of the character described, in combination with a primary heat generator having a Wall defining the sides of a combustion chamber and having an opening at the lower portion thereof, and a burner unit, the said hearth structure including fixed and movableframe-like portions, the said movable portion moving with said burner unit and being movable transversely relative to the fixed portion of the hearth structure, the movable portion and thefixed portion of the hearth structure cooper ating to close the said opening at the lower portion of the combustion chamber, the said movable frame-like portion being formed at an end toreceive the burner unit and to fit snugly within the fixed frame-like portion.

2. A hearth structure in combination with a 4 primary heat generator having a wall defining the sides of a combustion chamber with an opening at the lower portion thereof, a burner unit, the said hearth structure including a fixed frame portion with a wall cut-out portion and a movable frame-like member, the fixed frame portion having a cut-out central portion open at one end, the movable frame-like member being movable within the cut-out central portion and the opening at one end of the said fixed frame portion cooperating with said burner unit whereby both the frame-like member and said burner unit are movable transversely relative to the fixed frame portion of the hearth structure, the frame-like movable member and the fixed frame portion of the hearth structure cooperating with the said burner unit to close the said opening at the lower portion of the combustion chamber, the said movable frame-like member having an outer end portion upwardly extending to close said cut-out portion in the wall of said fixed frame portion of the hearth structure when the said movable frame-like member is received within the cut-out a central portion and the open end of the said fixed frame portion of the said hearth structure.

opening at the lower portion thereof, a hearth mfi structure comprising a plurality of frames, one

of said frames being movable, the other frame being fixed, a burner unit therefor, the movable frame being movable with the said burner unit and being adapted to move transversely and horizontally relative to the fixed frame of the said hearth structure, the said fixed frame, the said movable frame, and the said burner unit cooperating when assembled to define the lower limits I of the combustion chamber.

erator having a wall defining the sides of a combustion chamber and having a cut-out wall opening at the lower portion thereof, the said hearth structure comprising a plurality of frames, one of said frames being fixed, a movable burner unit,

the other of the said frames being movable with said burner unit, the said latter frame being adapted to move transversely relative to a fixed frame of the said hearth structure, the said fixed frame, the movable frame, and the burner unit cooperating to define the lower limits of the combustion chamber, the said movable frame being movable transversely within the fixed frame, and supporting means burner unit and the said movable frame when the movable frame is moved relative to the said fixed frame.

5. A hearth structure of the character described, in combination with a primary heat generator having a wall defining the sides of a combustion chamber and having an opening at the lower portion thereof, and a burner unit, the

said hearth structure including a stationary frame and a movable frame member, the latter frame member having an outer shoulder portion,

the said movable frame member cooperating with said burner unit and being movable trans versely relative to the stationary frame member of the hearth structure, the outer shoulder portion of the movable frame member and the stationary frame member of the hearth structure cooperating to close the said opening at the lower portion of the combustion chamber and also define its inner lowermost limits, the said movable 4. A hearth structure of the character described, in combination with a primary heat genjointly carrying the said frame member having side extension means slidably engageable with the said stationary frame of the hearth structure, the said stationary frame and the movable frame member having adjoining relieved portions therebetween forming when assembled an aperture to receive at least a portion of the said burner unit.

6. A hearth structure of the character described, in combination with a primary heat generator having a wall defining the sides of a combustion chamber and having an opening at the lower portion thereof, the said hearth structure comprising a plurality of stationary and movable frames, the movable frame having an upwardly extending outer shoulder portion, a burner unit, one of the said frames cooperating with said burner unit to the extent of being movable with the said burner unit and being adapted to move transversely relative to the stationary frame of the said hearth structure, the respective stationary frame, the movable frame, and the burner unit cooperating to close said opening at 6 the lower portion of the combustion chamber, the burner unit being connected to the movable frame and being movable therewith in a horizontal plane within a relieved portion of the said stationary frame.

CHARLES E. TOWNER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 931,712 I Adair Aug. 24, 1909 1,844,932 Chadwick et a1. Feb. 16, 1932 1,871,952 Chadwick et a1. Aug. 16, 1932 2,161,220 Beckett June 6, 1939 2,197,619 Mueller Apr. 16, 1940 2,243,249 Craig May 27, 1941 2,247,859 Purtell July 1, 1941 2,385,065 DuBrie Sept. 18, 194