US1448850A - Water heater - Google Patents

Description

Mar. 20, 1923.

3. J. T. LONG.

WATER HEATER.

FILED SEPT. 15, 1920.

2 SHEETSSHEET l.

FIG.

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S. J. T. LONG.

WATER HEATER.

FILED SEPT. 15. 1920. 2 SHEETS-SHEET 2 FIE. E.

Patented ll/llar. Z@, 1923.,

SIDNEY JAMES THOMAS LONG,

0F AUCKLAND, NEW ZEALAND.

WATER HEATER.

Application filed September 15, 1920. Serial No. 410,438.

To all whom it may concern:

Be it known-that SIDNEY JAMES THOMAS LONG, citizen of the Dominion of New Zealand, residing at Auckland,New Zealand,has

invented certain new and useful Improve ments in Water Heaters, of which the following is a specification.

This invention relates towater heaters of that class wherein water jackets or spaces enclose a. heat or combustion chamber, and water is caused to circulate around baffle plates fitted in chambersexposed exteriorly to heated gases, for the purpose of providing a large heating surface and of presenting the water to the latter in a thin body, in order to ensure rapid heating.

The object of the presentinvention is to provide an improved construction of heater whereinwater can be rapidly and economically heated to the required degree of temperature, the construction being such that the apparatus can be readily taken apart for inspection, cleaningv and repair purposes According to the invention the heater is formed with-separate sides, back and front,

-eaoh of which contains a vertical water back and front.

de elevation of the heater,

Figures 5 and 6 are a front sectional elevation (with cover removed), and a sectional plan respectively, of a modified construction.

Referring to the drawings, for the purposes of illustration, 1 and 2 represent sides of the heater and 3 and 4: the back and front thereof. Each of the sides 1 and 2, the back 3 and the front 4, is formed separately and contains a vertical water space 5.

The sides 1 and 2, back 3 and front 4 are secured together to provide an enclosed heat or combustion chamber by couplings 9 which pass across the inter1or corners of sa d meeting sides, back and front.

Detachable clips 7 which engage beads or projections 8 on the exterior corners of the meeting sides 1 and 2, back 3 and front 4, also serve to hold the latter securely together, (Figure 2).

From said sides 1 and 2, back 3 and front 4, tubes 10 (Figures 2, 3, and 4) project hor1zontally into the chamber 6, said tubes being closed at their outer ends, and proectlng almost right across said chamber 6.

The tubes 10 are also preferably tapered as illustrated in Figure 2.

Baffle plates 11 secured to the outer walls of the sides 1 and 2, back 3 and front 4 extend almost to the outer ends of said tubes 10 and divide the latter into upper and lower compartments, said plates 11 being kept centrally within the tubes 10 by studs or spacers 11 1 The tubes 10 are flattened and in communication with the water spaces 5 of the sides 1 and 2, back 3 and front a.

The baffle plates 11 extend the full width of the tubes 10, so that communication between the upper and lower compartments of said tubes is provided only at the outer ends of the latter.

The projection of the tubes 10 from the sides 1 and 2, back 3 and front 4 is arranged as shown in Figure 3, so that a zig-zag or tortuous passage as indicated by the arrows (Figure 3) is provided upwards in thechamher 6 for the heated gases, which must necessarily pass between said tubes 10, so that the latter provide considerable heating area.

The sides 1 and 2, back 3 and front 4: rest on a base 12 provided with a channel 13 as shown in Fig. 5', which collects and disposes of the efi'ects of condensation.

A cover 14 provided with an uptake 15 is fitted to the sides 1 and 2, back 3 and front 4.

Heat is generated by any suitable means,

such as a gas burner 16 located beneath the lower end of the device. The heated gases pass upwards between the sides 1 and 2, back 3 and front 4, and circulate through tortuous passage, below, between and over the tubes 10, and finally escape through the uptake or vent 15.

From the inlet pipe 17 water enters the top of the space 5 of the side 1 and passes downwards through said side 1 and over and under the baffle plates 11 in the tubes 10 in communication therewith, to the lower coupling 9 leading into the bottom of the Water space 5 of the back'3. Said water then rises in the back 3 and passes under and over the bafiie plate'll in the tube 10 open to the water space of'said back 3, and enters the top of the water space of the side 2, by way of the upper coupling 9. From the top of said side 2, the water passes downwards in the water space thereof, and over and; under the plates 11 in the tubes 10 open thereto to thelower coupling 9, opposite the first mentionedlower coupling into the front 4 and then upwards in the water space 5 thereof, under and over the plate 11' in the tube in communication therewith, and finally leaves the heater through the outlet pipe 18 from the top of the front 4.

By having the inlet 17 and outlet 18 both at the top of the heater, the latter is always kept full of water and emptying is prevented. Also the whole of the water must pass through the tubes 10. There is no direct communication between the water spaces 5 of the side land the front 4, the coupling 9 shown in Figure 2 not providing communication between said spaces, but be ng merely. a blank or provided only as a stay.

Where the heater is situated in the basement of a building and a substantial construction is necessary to withstand the pressure of water, the construction can be as shown in Figures 5' and 6, with the sides 1 and 2, back 3 and front 4 of stronger material than that used in the former construction and bolted together by corner pieces 20.

Instead of employing flattened tubes 10, horizontal rows of tubes. 21 each containing a baflie plate 11 as before are employed, only this construction the bafiie plates 11 comprise a series of fingers extending from plates 22 secured to the outer walls of the sides 1 and 2, back 3 and front 4 so that water can only pass from the upper or lower portion of a water space 5 to the lower or upper portion thereof, by way of the tubes 21.

The tubes 21 are passed through the inner walls of the sides 1 and 2, back 3 and front 4 or plates attached thereto and are secured by back nuts 24.

The passage of water through the last described construction is similar to that which occurs in the first described construction.

In the latter construction, the heated gases ing'of the full width of the side at their connection with the inner wall thereof and tapering from-this width toward their free ends, the respective tubes-projecting from the respective sides in succession and being themselves spaced apart vertically of the heater, and means for'heatlng arranged below the lowermost tube, whereby the tubes I form complete baflies against the vertical movement of the heat products.

2. A water heater having independent sides made up of spaced plates to provide a water space, means engaging the exterior plate of adjacent sides and thruout the longitudinal edges thereof to secure, said sides together to form a rectangular heater, f

the inner wall of each side having tubes extending therefrom in open communication with the water space of that side, the tubes being of the full width of the side at their connection with the inner wall thereof and tapering from this width toward their free 'ends, the respective tubes projecting from the respective sides in succession and being themselves spaced apart vertically of the heater, a baffle plate arranged in each tube and connected to the outer wall of said side.

and of the full width of the tube and side,

the baffle plate extending within the tube and terminating short of the free end of the tube, and means for heating arranged belowthe lowermost tube, whereby the tubes form complete baflies against the vertical,

movement of. the heat products.

In testimony whereof I afiix my signature in resence of two witnesses.

SID Witnesses: WILLIAM Pmcmus,

MARY PILKINGTON.

EYJAMES THOMAS LONG.

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