US1614805A - Thermal-efficiency casing for fluid-heating boilers - Google Patents

Thermal-efficiency casing for fluid-heating boilers Download PDF

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US1614805A
US1614805A US568527A US56852722A US1614805A US 1614805 A US1614805 A US 1614805A US 568527 A US568527 A US 568527A US 56852722 A US56852722 A US 56852722A US 1614805 A US1614805 A US 1614805A
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casing
dome
boiler
fluid
thermal
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US568527A
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Ryerson Cornelius Arthur
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Ryerson Cornelius Arthur
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/02Casings; Cover lids; Ornamental panels

Description

Jan. 18, 1927. ,614,805
C. A. RYERSON THERMAL EFFICIENCY CASING FOR FLUID HEATING BOILERS Filed June 15, 1922 INVENTOR: OUR/VELIUS fl. RYERSON 7 a; 51mm). M MGL, ,arromvsvs Patented Jan. 18, 1927.
UNITED STATES CORNELIUS ARTHUR RYERSON, OF TORONTO, ONTARIO, CANADA.
THERMAL-EFFICIENCY CASING FOR- FLUID-HEATING BOILERS.
Application. filed Iune.15, 1922. Serial No. 568,527.
My invention relates to. improvements in thermal efficiency casings for fluid heating boilers and the object of the invention is to devise an improved means for directing the hot gases issuing from the furnace down around the outside of the boiler proper, prior to issuing to the smoke pipe.
A further object is to devise means whereby the length of the path travelled by the hot gases can be varied prior to passing to thesmoke pipe. A further object is to devise means for. preventing an internal explosion in the casing due to ignition of unburnt gases fracturing the casing, which occurs at the present time, and another object is to devise auxiliary means for heating water other than by the water jacket of the furnace, which will supplement such water from the water jacket by being connected into the heating system.
Hitherto casings have been constructed with partitions or baflies in contact with and connecting the outer casing with the outside of the boiler, but in carrying out my invention in its simplest form I do away with any fiues, merely directing the hot gases from the furnace down around the-entire outside of the boiler jacket, thus giving an uninterrupted fiow to such gases. Further, in my :0 construction, in assembling the casing I can compensate for differences in draught which has not hitherto been possible.
My invention consists of a casing constructed and arranged all as hereinafter more particularly described and illustrated in the accompanying drawing in which:
Fig. 1 represents an elevational view of a boiler equipped with a casing showing the casing broken away to expose the construction of the interior.
Fig. 2 is a horizontal section through the line 22 (Fig. 1), and
Fig. 3 is an enlarged vertical section through the line 33 (Fig. 2).
Like characters of reference indicate corresponding parts in the different views.
1 is the boiler proper which in the resent instance is of cylindrical shape with its longitudinal axis vertical, 2 is a casing of required shape extending over the boiler proper, said casing being constructed of suitable refractory material, and being suitably spaced from the boiler proper l and provided with orifices in the front thereof to receive the frames of the respective doors of the furnace. -3 is acentral vent in the top of the casing adapted to be connected by the smoke pipe to the chimney. 4 is a dome or hood applied over the boiler proper and suitably; spaced from the side and top thereof by means of the angular supporting members 5, the top of said dome having a'central vent 6 registering with the vent 3 in the outer casing 2, said vent 6 being adapted'to be closed by the slidable damper 7 sliding in guides 8' and operated by the rod 9.
10 is a hot water outlet from the boiler: 1 which extends through the domeretwandi the outer casing 2.
The dome 4 is hollow and: adapted to :be: filled with water from the pipe 17, the water when heated being ejected through the pipe 18 which is connected into-the hot water heating system. The top of the dome 4 is provided with suitable orifices 11 through; which extend the upper dependingportions 12 of conduits, said conduits havinglower portions 13 adapted to telescope into the upper portions 12 and secured thereto; by the screws 14.
The upper portions 12 of the conduits are provided with conical valves 15 which seat in the top thereof and are operable manu ally by means of the levers 16, or any other suit-able means. It will be noted that should an explosion of unburnt gases occur in the lower part of the casing these valves will be blown open by the gas expanding and thus permit such gas to be expelled direct to the. smoke pipe through the orifice 3 thereby obviating the force of the explosion breakin the casing as might occur if the exploded gas were compelled to follow the restricted upward path between the dome 4 and the outer casing 2.
The operation of my device is as follows:
It will be apparent that as there are no baflles or flues in the casing or dome to interfere with the normal free circulation of the hot gases, such gases after being expelled from the outlet 24 of the boiler proper will be freely circulated in an outward direction over the top of the boiler and downwardly about the outer wall thereof, provided the damper 7 and the valves 15 are closed until such gases reach the lower edge of the dome 4 when they will pass up through the space between the dome and the outer casing 2 and be finally ejected through the vent 3 into the smoke pipe. Should a direct draught be required it is only necessary to open the damper 7 by means of the rod 9 when such hot gases will be expelled directly through the vent 6 and vent 3 without being circulated through the casing.
If the valves 15 are open and the lips of the conduits 13 are positioned above the lower edge of the dome I a portion of the hot gases after being passed down the space between the boiler and the dome 4, will be ejected thereoutof through such conduit portions 13 and 12, provided the damper 7 is closed and the remainder of the gas will pass own about the bottom of the dome and up through the space between such dome and the outer casing 4:. The gas in being ejected from the conduit portions 12 will unite with the gas passing up the outside of the dome and will be finally ejected through the vent 3 into the smoke pipe. The operation of the valves 15 affords a means of varying the temperature of the hot water in the boiler without varying the intensity of the fire.
In assembling the casing the portions 13 can be adjusted in length respectively to the portions 12 of the conduits in order to give the most ettlcient results, dependent upon the draught of the chimney, as it is well known that such draughts vary in each individual case.
In casings of the present type internal explosions occasionally occur through unburnt gases issuing from the boiler being ignited by a flame therefrom and exploding in the casing, thus causing the fracturing thereof. In my present construction this is obviated by the use of the conicalvalves which permits the ignited unburnt gases in the interior of the dome to expand and open the valves. If this means was not provided the gas would be confined and the explosion would be of suflicient force to fracturethe casing.
By theuse of the auxiliary water jacket in the dome 4 it will be seen that I have devised supplemental means for heating water without any further expenditure of fuel which will in fact efl'ect a considerable economy.
hat I claim as my invention is:
1. The combination with the boiler proper, of an outer casing extending about the boiler in spaced relation thereto, an intermediate dome extending over the boiler and spaced therefrom and from the outer casing, said dome having orifices through the top thereof and depending extendible conduits mounted in said orifices, and valves for normally closing the conduits.
2. The combination with the boiler proper, or an outer casing extending about the boiler in spaced relation thereto, an intermediate dome extending over the boiler and spaced theretrom and from the outer casing, said dome having orifices through the top thereot, depending conduits mounted in said orifices and inverted conical valves normally seated in said conduits.
CORNELIUS ARTHUR RYERSON.
US568527A 1922-06-15 1922-06-15 Thermal-efficiency casing for fluid-heating boilers Expired - Lifetime US1614805A (en)

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