US2147378A

US2147378A - Boiler

Info

Publication number: US2147378A
Application number: US152802A
Authority: US
Inventors: James R Mcguiness
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-07-09
Filing date: 1937-07-09
Publication date: 1939-02-14
Anticipated expiration: 1956-02-14

Description

Feb. 14, 1939. J R. M GulNEss BOILER Filed July 9, 1957 INVENTOR.

ATTORNEY.

Patented Feb. 14, 1939 UNITED STATES PATENT OFFICE 3 Claims.

My invention relates to a new and useful improvement in a boiler in which there is utilized both water tubes and fire tubes and the invention has for its object the provision of a boiler which will be simple in structure, economical of manufacture, durable, compact and highly eflicient in use.

Another object of the invention is the provision of a boiler so arranged and constructed that the upper ends of vertically extended water tubes will be first subjected to the hot gases which will be forced to travel downwardly around the vertically extended fire tubes so that efficiency is provided for rapid steaming.

" Another object of the invention is the provision of a construction whereby, the hot gases after passing around the water tubes are forced to pass around fire tubes thus utilizing the hot gases to the maximum extent.

Another object of the invention is the provision of a boiler so constructed and arranged that violent disturbances in the water tubes may be avoided.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which 39 forms a part of this specification, and in which,

Fig. 1 is a longitudinal, vertical, central, sectional view of the invention.

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

35 Fig. 3 is a fragmentary, sectional View taken on line 33 of Fig. 1.

As shown in the drawing, the boiler comprises an inner casing having a front 1, a back 8 and an intermediary wall forming portion 9. The

40 back 8 is rearwardly ofiset or angularly turned as at 9 and thence turned downwardly to provide the portion III, the lower end of which is flanged at H. The lower edge of the front I as well as the intermediary portion is flanged at I2, these 45 flanges engaging against and being welded to the outer casing embodying the back l3, the front I4 and the shell or intermediary portion IS. The

inner casing and the outer casingare spaced apart.

The space 16 between the fronts I and I4 being comparatively shallow and the space I! between the back l3 and the portion In also being comparatively shallow to provide water legs. The intermediary or shell forming portion 9 is of less length than the shell forming portion I 5 so u that there is a compartment or enlarged space I8 between the backs 8 and I3. Suitable stay bolts I!) serve to connect the inner shell with the outer shell. The space or compartment 29 above the inner shell or casing provides a steam dome from which the steam outlet pipe leads. The 5 back 13 is turned inwardly, adjacent its upper end as at 22, and thence vertically to provide the vertically extended portion 23 and thus form a smoke box 24 from which extends the outlet flue 25. The front I 4 is braced by the stay rods or 10 brace bolts 28 and the portion 23 is braced by the stay rods or brace bolts 21. Water tubes having the vertically directed portion 28 projecting through the upper portion of the shell or inner casing 9 to communicate with the compartment 15 20. These water tubes are angularly turned at their lower ends to provide the horizontally directed or angularly turned portion 29, these tubes projecting through the portion In to communicate with the water leg IT. The front wall [4 is 20 provided with the opening 38 communicating with the ash pit 3| and with the opening 32 communicating with the fire box or combustion chamber 33, the grates being located as indicated in dotted lines as at 34. Projecting upwardly from the bot- 25 tom 35 of the boiler is a bridge wall support 36 supporting a transversely directed angle iron 3'! on which a bridge wall or baffle 38 rests. This bridge wall is normally inclined to the vertical as shown in Fig. 1 and rests against the angle irons 39 which are secured to the shell 9 of the inner casing.

Traversing the space l8 are the fire tubes 40 which project through the portion 9 of the inner casing and through the portion 22 of the outer casing so as to establish communication between the interior of the inner casing 9 and the smoke box 24. The construction is such that the heated gases are forced to pass over the top of the bridge wall 9 thus coming into contact with the water tubes 28 adjacent their upper ends. These hot gases then travel downwardly around the vertical portion of the tubes 28 and then around the horizontally turned portion and thence upwardly through the fire tubes 40 into the smoke box 24 and thence outwardly through the flue 25. The smoke box is positioned below the water level so that the bottom and a portion of the rear thereof is in contact with the water which fills the space I8. In this way, a violent disturbance of the water in the water tubes is avoided as the heated gases travel downwardly along the vertical extended portions 28. Due to the fact that the heated gases are brought into contact with a maximum heating area the efficiency of the de- 5 vice is raised to a high degree and a very efficient boiler is provided especially adapted for use for heating purposes.

A hot water coil 43 is positioned in the steam dome 24 with one portion thereof below the normal water level of the boiler. An inlet water delivery pipe 44 communicates with the water leg H. The entire boiler is provided with a cover 45 which serves to retain the usual insulation in position.

With a boiler constructed in this manner, an eflicient, compact, economical, durable structure is provided.

While I have illustrated and described the pre ferred form of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as may come within the. scope of the appended claims.

What I claim as new is:

1. A boiler of the class described, comprising: an outer casing; an inner casing positioned within and spaced from said outer casing to provide a water-tight compartment; a plurality of water tubes communicating at their opposite ends with said water compartment, one end of said tubes communicating with said water compartment adjacent the top thereof and the other end communicating with said water compartment adjacent the bottom thereof, said tubes being angularly turned intermediate their ends to provide a vertically extending portion and a horizontally projected portion; a bridge wall positioned in front of the vertically directed portion of said tubes for deflecting the heating gases toward the upper end of said tubes, the path of travel of said heating gases being along said tubes and outwardly from said inner casing adjacent the horizontally directed portion of said tubes; and a plurality of fire tubes communicating with said inner casing adjacent the horizontally directed portion of said water tubes and projecting outwardly of said outer casing adjacent the upper end thereof, said fire tubes extending throughout their length in said water compartment.

2. A boiler of the class described, comprising:

an outer casing; an inner casing positioned within and spaced from said outer casing to provide a water compartment; a plurality of water tubes communicating at one end through the top of said inner casing with said water compartment and at their opposite ends through the rear of said casing adjacent the bottom thereof with said water compartment, said tubes being angularly turned intermediate their ends to provide a vertically directed portion and a horizontally directed portion; a bridge wall positioned in front of said water tubes for deflecting the heating gases toward the upper end of the vertically directed portion of said water tubes, there being provided a passage for said heated gases extending downwardly from the upper ends of said water tubes and outwardly of said inner casing adjacent the horizontally turned portion of said water tubes; and a plurality of fire tubes extending through said water compartment and adapted for conducting the heating gases outwardly of said casings from adjacent the horizontally directed portion of said water tubes.

3. A boiler of the class described, comprising: an outer casing; an inner casing positioned within and spaced from said outer casing to provide a water-tight compartment; a plurality of water tubes communicating at their opposite ends with said water compartment, one end of said tubes communicating with said water compartment adjacent the top thereof and the other end communicatin with said water compartment adjacent the bottom thereof, said tubes being angularly turned intermediate their ends to provide a vertically extending portion and an angularly turned portion; and a plurality of fire tubes communicating with said inner casing adjacent the angularly turned portion of said tubes and projecting upwardly and outwardly of said outer casing adjacent the upper end thereof, said fire tubes extending through said water compartment and serving as a means for conducting the heated gases from adjacent the ends of said angularly turned portions of said tubes outwardly from said inner casing.

JAMES R. MCGUINESS.