US2082648A

US2082648A - Water heater construction

Info

Publication number: US2082648A
Application number: US73928A
Authority: US
Inventors: Walter S Moffitt
Original assignee: GENERAL FITTINGS CO
Current assignee: GENERAL FITTINGS CO
Priority date: 1936-04-11
Filing date: 1936-04-11
Publication date: 1937-06-01
Anticipated expiration: 1954-06-01

Description

J1me 7- i w. s. MOFFlTT 2,082,648

WATER HEATER CONSTRUCTION Filed April 11, 1936 Patented June 1, 1937 UNITED STATES v 2,082,648 1 WATER HEATER CONSTRUCTION Walter Moflitt, Warwick, R. I., vassignor to General Fittings Company, Providence, R. L, a

corporation of Rhode Island Application-April 11, 1936, Serial No. 73,928

. v Claims. (Cl. 257-230) My present invention relates to the heating art, and has particular reference to water heater constructions of the indirectty'pe for domestic use. V l

5 It is the principal object of my invention to provide. an indirect water heater construction which may be readily attached to any type of house boiler, and which will furnish an instantaneous supply. of hot water for domestic pur- Doses.

It is a further object of my invention to use a heater construction which eliminates the storage tank and the fittings normally required for the usual type of hot water installations.

An additional objection of my invention is to provide an improved design for an indirect water heater which eliminates all possibility of air binding, and which is always completely filled with water moving in one direction.

A still further object of my invention is to provide an indirect heater construction which may be utilized with a circulating flow system, and without requiring a pump therewith.

Other objects of my invention are to provide a construction that can be thoroughly and quickly drained for cleaning, or for winter layup, and which can be quickly restored to service whenever desired.

With the above and other objects and advantageous features in view, my invention consists of a novel arrangement of parts more fully disclosed in the detailed description following, in conjunction with the accompanying drawing, and more specifically defined in the claims appended thereto.

In the drawing;

Fig. 1 is a side elevation of the novel water heater;

Fig. 2 is a front elevation of Fig. 1, parts being omitted for clearness;

Fig. 3 is a sectional view of the novel header construction on the line 3-3 of Fig. 2;

Fig. 3a is a sectional detail on the line 311-311 of Fig. 2;

Fig. 4 is a perspective view of a header; and Fig. 5 is a diagrammatic view showing the path of flow of water through the heater.

Referring to the drawing, the novel water heater in includes an outer shell or casing II which has a boiler water inlet I2 at its upper end and a boiler water outlet l3 at its lower end, the easing having a front plate [4, see Fig. 2, in which a plurality of coils l5 are mounted, the coils being in the form of connected loops l6, preferably 55 formed from a single length of copper tubing, and

having their ends I! extending through inlet and outlet openings I8 and l8 respectively in the front plate l4, and 'swaged so as to be locked therein. The coils [5 are arranged vertically one above the other, but are inclined to each other at an angle 'to the horizontal, as indicated by the lines 19, see Fig. 5, whereby the flow therethrou'gh is always in an ascending relation, as hereinafter explained. Two

headers

20, 2|, see Fig. 2, are mounted on the front plate I4, 0 as by bolts 22 extending through the headers and seated in cooperating threaded openings 'inthe plate: I 4, flange ll' of the casing II, the header 2!! having an inlet opening 23 for water to be heated and .an outlet opening 24 .for heated water, the openings being threaded to receive. pip.- ing nipples. Both headers have passagewayspr recesses 25, see, Figs. 3a and 4, which serve to conmeet the ends of each coil l5 with the contiguous ends of the adjacent coil, as indicated in the 20 diagrammatic Fig. 5, suitable packing of standard type being interposed between the headers and the front plate to ensure against leakage.

With the above described construction, the water to be heated enters the inlet 23, passes through the loops I6 of the first coil l5, always in an upwardly direction, then through the lowest recess 25 of the header 2| and into the next coil 1 5 which also is positioned so as to cause the flow to be continually upward, then through the lowest recess of the header 20, and so on until the outlet 24 is reached.

The inflow boiler water from a domestic heating plant or the like, enters through the inlet connection l2 and exits through the outflow connection [3, the flow of the boiler water around the coils of the water heater being continually in counter flow relation to the upwardly moving water in the water heating coils, whereby an extremely efiicient transfer of heat from the boiler water to the domestic hot water supply is obtained.

The small cross-section of the heating coils and the very large surface area exposed to heat transfer relation with the hot boiler water produces a very rapid fiow through the coils and a resultant rapid heating of the water, whereby a storage tank is not required. The continually upward flow of the water in the coils permits utilization of the heater in a circulatory system, as no air pockets can form, the flow through the piping being continuous, whereby opening a faucet immediately draws hot water from the system. Moreover, cleaning is facilitated, as removal of the headers exposes the ends of each coil and drainage for cleaning and for summer layoff is positive.

It will be noted that the construction utilizes a small number of easily manufactured parts,

5 readily assembled and installed, whereby the cost of manufacture and of repair is low.

Although I have described a specific embodiment of my invention, it is obvious that changes in the form, sizes, and shapes of the parts to suit J different heating installation requirements may be made, without departing from the spirit and the scope of the invention as defined in the appended claims.

I claim:

' 5 1. In an indirect water heater, a casing having an inlet for heating fluid and an outlet for cooled heating fluid, said casing having a face plate, a plurality of substantially horizontal coils each comprising a plurality of continuous loops in the plane of the coil and in series and having its ends mounted in said face plate, and header means secured to said face plate and connecting said coils in series relation.

-2. In an indirect water heater, a casing having an inlet for heating fluid and an outlet for cooled heating fluid, said casing having a face plate, a plurality of substantially horizontal coils each comprising a plurality of continuous loops in the plane, of the coil and in series and having its ends mounted in said face plate, and header means secured to said face plate and connecting said coils in series relation, the flow of heating fluid through said casing and of water to be heated through said coils being in. counter relation.

3. In anindirect water heater, a casing having an inlet for heating fluid and an outlet for cooled heating fluid, said casing having a face plate, a plurality of substantially horizontal coils each comprising a plurality of continuous loops in the plane of the coil and in series and having its ends mounted in said face plate, and header means secured to said face plate and connecting said coils in series relation, contiguous coils being in inclined relation, and the inlet to said coils being at the lower most point thereof, whereby water to be heated flows through the coils in continually ascending relation.

4. In an indirect water heater, a casing having an inlet for heating fluid and an outlet for cooled heating fluid, said casing having a face plate, a plurality of substantially horizontal coils each comprising a plurality of continuous loops in the plane of the coil and in series and having its ends mounted in said face plate, and header means secured to said face plate and connecting said coils in series relation, the flow of heating fluid through said casing and of water to be heated through said coils being in counter relation, contiguous coils being in inclined relation, and the inlet to said coils being at the lower most point thereof, whereby water to be heated flows through the coils in continually ascending relation.

5. In an indirect water heater, a casing having an inlet for heating fluid and an outlet for cooled heating fluid, said casing having a face plate, and a plurality of substantially horizontal coils each comprising .a plurality of continuous loops in the plane of the coil and in series, said face plate having header means connecting said coils in series relation, contiguous coils being in inclined relation, and the inlet to said coils being at the lower most point thereof, whereby water to be heated flows through the coils in continually ascending relation.

WALTER S. MOFFITT.