US1980424A

US1980424A - Water heater

Info

Publication number: US1980424A
Application number: US679377A
Authority: US
Inventors: Leigh F Morgan
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-07-07
Filing date: 1933-07-07
Publication date: 1934-11-13
Anticipated expiration: 1951-11-13

Description

9 L. F. MORGAN 1,930,424

WATER HEATER Filed July 7, 1933 2 Sheets-Sheet 1 IN VEN TOR.

BY QM i ATTORNEY.

Nov. 13, 1934. L. F. MORGAN WATER HEATER Filed July 7, 1953 2 Sheets-Sheet 2 l l l i 3 47% i i a g I 'I 5 II I: I INVENTOR.

fizglwm L BY Mag v ATTORNEY.

Patented Nov. 13, 1934 UNITED STATES WATER HEATER Leigh F. Morgan, Springfield, Mass.

Application July 7, 1933, Serial No. 679,377

Claims.

This invention relates to heating apparatus in its broad aspects and is directed more particularly to improvements in heaters for supplying hot water.

The principal objects of the invention are directed to the provision of a heater which is constructed and arranged to be adapted for use either as a heating unit for a hot water supply system or as a heat interchanger or indirect heater coupling such a system to a heating unit such as a boiler.

In the former case, the heater functions as the sole means of supplying hot water, while in the latter case the water in the hot water system is heated by the boiler by means of the heater of the invention, and the heater may be used to supplement the boiler when coupled thereto.

According to one important object of the invention, the heater comprises separate primary and secondary compartments so constructed and arrangedin a novel manner and so related that the required amount of water in the primary compartment for efficient operation is of comparatively small volume and the heater may operate at pressures which are substantially atmospheric. This not only makes it possible to operate with efliciency and at low cost but the hazards accompanying higher pressures are eliminated and the necessity for safety devices such as temperature and pressure relief valves, fusible plugs and the like is obviated.

According to another important feature of the invention, not only is the primary compartment adapted for small volume for efficient and economical operation but it is associated with the secondary compartment so as to facilitate the utmost efliciency of heat transfer. As a special feature, a combustion chamber and associated fiues are related to the primary compartments so that only a minimum of heat is lost when the heater is operated as the sole means of heating water in the hot water supply system.

According to another object of the invention a heater is provided which has water and heating passageways or compartments arranged in alternate relation.

Various novel features of construction and advantages of the invention will be obvious from the following description thereof which for purposes of disclosure is illustrated in the accompanying drawings. It will be understood that various changes and modifications may be made in the form of the invention as illustrated and therefore I do not wish to be limited to the detail of the precise construction and arrangement shown. In the drawings:

Fig. 1 is a sectional elevational view through a heater embodying the novel features of the in- 9 vention.

Fig. 2 is a side elevational view of the heater shown in Fig. 1.

Fig. 3 is an inverted plan view of the heater shown in Fig. 1. i

Fig. 4 is a sectional plan view on the line 4--4 of Fig. 1 with minor details omitted.

Fig. 5 is a plan view of the cap member of the heater.

Fig. 6 is a sectional plan view on the line 6-6 of Fig. 1.

Fig. 7 is an inverted sectional plan view on the line 7-7 of Fig. 1.

Fig. 8 is a side elevational view of the combustion tube of the heater, and

Fig. 9 is an elevational view of the lower portion of the central baflie of the heater.

Referring to the drawings more in detail the invention will now be fully described.

The heater H preferably includes lower, intermediate and upper or cap sections, 2, 4 and 6 respectively, which are suitably secured together as by bolts 8 to form a shell. If desired these parts may be made integral.

The lower section 2 has a lower wall 10 connected to a central upwardly extending tubular wall portion 12 capped at 14. This tubular portion 12 is similar to an inverted elongated cup and is preferably tapering in a general Way as shown. This may be called a combustion chamber. The wall portion 12 is preferably concentrically disposed relative to the walls of the sections 2 and 4 and provides in co-operation therewith what may be called a primary water compartment P.

A supporting flange 16 depends from the lower section 2 and is arranged for supporting the heater and forms a compartment 18 in the lower side thereof.

A sub wall 20 is provided below wall 10 and a combustion tube 22 extends upwardly therefrom in spaced relation with respect to the wall 12. Transverse walls 24, spaced apart as shown in Fig. 7, abut the flue 22 and form a compartment therebetween. The space between

walls

10 and 20 around tube 22 leads into a flue 26 at one side of section 2 which fiue may be connected by a pipe 28 to a stack or chimney. When it is desired to associate heating means with the heater this may be accomplished in the following manner.

A gas burner nozzle 30 may be associated with a plate 32 below tube 22. Of course an oil burner device may be employed if desired. A fuel supply pipe 34 is provided with a valve apparatus 36 which is adapted to be opened and closed by a temperature sensitive element 38 having a part disposed in the primary compartment P. This mechanism forms no part of the inven tion but is shown by way of explanation and will embody the desired and necessary controls and safety devices. Suffice it to say that when a burner is used with the heater it will be desirable that the burner be controlled in its operation by 5 the temperature in the primary compartment.

With the burner disposed as shown, the products of combustion passupwardly in the tube 22 which as will be observed is relatively long. The heat strikes the part 14 of the combustion chamber and the gases pass downwardly between the flue and wall 12 in passageway 13 and out flue 26. It will be noted that the hot gases are in contact with a large area of wall of the primary compartment for the most efficient transfer of heat and that the gases are not unduly obstructed but on the contrary are caused to travel upwardly, downwardly and then upwardly to facilitate the utmost efliciency' in operation.

A secondary water compartment which may be connected to a hot water supply system is disposed entirely within the primary compartment. This in the embodiment of the invention shown is in the form of a pipe coil or coils 40 having opposite ends connected to upper and lower headers 42 and 44. These headers are connected to

pipes

46 and 48 which may be connected to a hot water supply system or supply tank for a system.

A central bafile member 50 is provided which is tubular in form and is spaced from and surrounds the inner wall 12 or combustion chamber. This has an upper end wall 52 provided with one or more ports 54. Its lower end rests on wall 10 and is provided with ports such as 56. Water in the primary compartment outside of member 50 may circulate through openings56 in the lower side of member 50 into and upwardly through the relatively narrow passageway between wall 12 and bafile, as shown, and then out the top of the baflle. In this way when the wall 12 is heated the water in the passageway 53 is heated to facilitate the circulation and accelerate the heating of the primary water.

Various openings are provided in the shell which are arranged so that the heater may be connected in various ways to a boiler or the like. Any of the openings not used may be closed by suitable means such as the plugs 60, shown.

The heater as shown in Fig. l is arranged with a burner and may be connected to a boiler or the like by means of pipes 62 and 64. This is so the primary water may be heated directly from the boiler or by means of the burner or the burner may operate to heat the primary water in addition to the heating by the boiler.

When the heater is not connected to a boiler the opening for pipe 64 may be plugged and the opening for pipe 62 may be connected to a water supply or open to atmosphere. When the heater is operated by the burner the primary water tends, as it is heated, to circulate upwardly through the space 53 between bafile 50 and wall 12, through port 54 in part 52 and downwardly through a lower port or ports 56.

A horizontal baflle plate provided with ports 72 is disposed near the top of the heater which facilitates the circulation mentioned. When the heater is connected to a boiler or other heating unit, water therefrom enters through pipe 62, circulates as above described and passes out pipe 64.

Altogether there is a continuous circulation and since the primary water is of substantially small volume and is in contact with relatively large surface areas the heat transfer is rapid. It will be observed that it is not necessary, according to this invention, to close the primary compartment entirely wherefore the danger of building up excessive pressure is obviated and the resultant hazards eliminated.

It will also be seen that the primary water may be heated by the burner alone or that it may be supplied fron'ra boiler. In either case,-

the continuous circulation is. assured for the desired efliciency in transfering heatnto the secondary coils.

The invention is adapted for broad application and various changes may be made without departing from the spirit and scope; therefore, what I'desire to claim and secure by Letters Patent of the United States is:

1. An apparatus of the class described comprising in combination, a shell having upper and lower and side walls with an inner wall extending upwardly from the lower wall within the side walls and spaced therefrom to form an annular primary water compartment about said inner wall, a secondary water compartment within the primary compartment and separate therefrom, and a tubular baille member between the secondary compartment and inner wall extending upwardly between said outer and inner walls and spaced therefrom to form a passageway between said secondary water compartment and the inner wall provided with lower and upper ports whereby water in the primary compartment may circulate upwardly in said passageway.

2. An apparatus of the class described comprising in combination, a shell having outer walls capped by an upper end wall, a bottom wall, inner walls extending upwardly from the bottom wall in spaced relation with respect to the outer walls arranged at their upper ends to form a heating chamber closed at its upper and open at its lower end and a primary water compartment therearound, a secondary compartment around said chamber within the primary compartment and separate therefrom, a central flue member extending upwardly within the chamber spaced from the inner walls and from the closed upper side of the chamber to provide a continuous passageway upwardly within the flue member and downwardly between said member and said inner walls, a baflle member within the primary compartment between the secondary compartment and inner walls extending upwardly from the bottom wall and spaced from the inner walls to form a passageway adjacent said inner walls.

3. An apparatus of the class described comprising in combination, a shell having outer walls capped by an upper end wall, a bottom wall, inner walls'extending upwardly from the bottom wall in spaced relation with respect to the outer walls arranged at their upper ends to form a heating chamber closed at its upper and open 4 at its lower end and a primary water compartment therearound, a secondary compartment around saidchamber within the primary compartment and separate therefrom, a central flue member extending upwardly within the chamber spaced from the innerwalls and from the closed upper bottom wall and spaced from the inner walls to form a passageway adjacent said inner walls, and a perforated baflle plate transversely disposed between the upper end of said baflie member and said upper end wall of the shell.

4. An apparatus of the class described comprising in combination, a shell having outer walls capped by an upper end Wall, a bottom wall, inner walls extending upwardly from the bottom wall in spaced relation with respect to the outer walls arranged at their upper ends to form a heating chamber closed at its upper and open at its lower end and a primary water compartmenttherearound, a secondary compartment around said chamber within the primary compartment and separate therefrom, a central flue member extending upwardly within the chamber spaced from the inner walls and from the closed upper side of the chamber to provide a continuous passageway upwardly within the flue member and downwardly between said member and said inner walls, a bafile member within the primary compartment between the secondary compartment and inner walls extending upwardly from the bottom wall and spaced from the inner walls to form a passageway adjacent said inner walls, the said inner walls convergingmpwardly to provide a widened entrance for the chamber.

5. An apparatus of the class described comprising in combination, a shell having outer walls capped by an upper end wall, a bottom wall, inner walls extending upwardly from the bottom wall in spaced relation with respect to the outer walls arranged at their upper ends to form a heating chamber closed at its upper and open at its lower end and a primary water compartment therearound, a secondary compartment around said chamber within the primary compartment and separate therefrom, a central flue member extending upwardly within the chamber spaced from the inner walls and from the closed upper side of the chamber to provide a continuous passageway upwardly within the flue member and downwardly between said member and said inner walls, a baflle member within the primary oompartment between the secondary compartment and inner walls extending upwardly from the bottom wall and spaced from the inner walls to form a passageway adjacent said inner walls, the said inner walls, baffle member and flue converging from the lower ends thereof.

6. An apparatus of the class described comprising in combination, a shell having outer walls capped by an upper end wall, a bottom wall, inner walls extending upwardy from the bottom wall in spaced relation with respect to the outer walls arranged at their upper ends to form a heating chamber closed at its upper and open at its lower end and a primary water compartment therearound, a secondary compartment around said chamber within the primary compartment and separate therefrom, a central flue member extending upwardly within the chamber spaced from the inner wall and from the closed upper side of the chamber to provide a continuous V passageway upwardly within the flue member and downwardly between said member and said r inner wall, a bafile member within the primary closing'the-upper ends thereof forming a water compartment around a heating chamber which is open at its lower side, a baffle extending upwardly between said outer and inner wall forming a passageway adjacent the inner wall, a coil in said compartment outside said baflie, connections associated with the outer wall supporting said coil, a sub-wall spaced from and connected to said lower wall, wall portions associated with the lower and sub-wall forming a radially disposed flue and a flue member extending through the sub-wall upwardly in said chamber and spaced from said inner wall to provide a passageway therebetween, the lower wall, sub-wall, wall portions and flue member forming a chamber in communication with said passageway and flue.

8. An apparatus of the class described comprising in combination, a lower wall, an outer wall and an inner wall extending upwardly therefrom in spaced relation with wall members closing the upper ends thereof forming a water compartment around a heating chamber which is open at its lower side, a bafiie extending upwardly between said outer and inner wall forming a passageway adjacent the inner wall, a coil in said compartment outside said baflle, connections associated with the outer wall supporting said coil, a horizontal baffle in said compartment above said first-named bafile having an opening therethrough, a sub-wall spaced from and connected to said lower wall, wall portions associated with the lower and sub-wall forming a radially disposed flue, and a flue member extending through the sub-wall upwardly in said chamber and spaced from said inner wall to provide a passageway therebetween, the lower wall, sub-wall, wall portions and flue member forming a chamber in communication with said passageway and flue.

9. An apparatus of the class described comprising in combination, a shell having upper and lower and side walls with an inner wall extending upwardly from the lower wall within the side walls and spaced therefrom to form an annular primary water compartment about said inner wall, a secondary water compartment within the primary compartment and separate therefrom, a tubular baflie member between the secondary compartment and inner wall extending upwardlybetween said outer and inner walls and spaced therefrom to form a passageway between said secondary water compartment and the inner wall provided with upper and lower ports whereby water in the primary compartment may circulate upwardly in said passageway, and a closure for the upper end of said bafile member.

10. An apparatus of the class described comprising in combination, a shell having upper and lower and side Walls with an inner wall extending upwardly from the lower wall within the side walls and spaced therefrom to form an annular primary water compartment about said inner wall, asecondary water compartment within the primary compartment and separate therefrom, a tubular baffle member between the secondary compartment and inner wall. extending upwardly between said outer and inner walls and spaced therefrom to form a passageway between said secondary water compartment and the inner wall provided with upper and lower ports whereby water in the primary compartment may circulate upwardly in said passageway, and a perforated bafiie plate transversely of the primary compartment between the upper wall. and upper end of the baille member.

LEIGH F. MORGAN.