UNPRESSURIZED HORIZONTAL ELECTRIC STORAGE TANK WATER HEATER

Abstract

The invention provides for protection of life safety, property and the liability thereof, by means of a intrinsically safe unpressurized storage tank water heater while producing hot pressurized water. The design addresses, with effect, convection, radiation, conduction and evaporative heat energy losses. Heat lost returned as usable hot water resulting in ultra-low standing loss. The stationary water medium prevents sedimentation, fouling of the heating element and gases expelled. Being dielectrically isolated, the medium may also be treated to further reduce corrosion. The design allows for a quick recovery rate and provides adjustable volume of hot water, being stackable, stage able, renewable, repairable and recyclable.

Claims

1. A water-heating device comprising of: a. a open head cylindrical vessel, b. a closure head at the open end of the vessel, c. a heat exchanger surrounding the vessel, d. at least one heat exchange assembly internal to the vessel, e. a vent that communicates with the atmosphere, f. a heating element, g. a thermostatic control device, h. a radiant barrier shell surrounding entire device.

2. The device of claim 1 further comprising: a. a rectangular insulation package surrounding the cylindrical vessel.

3. The device of claim 1 further comprising a. a sealing gland system for the water intake and outlet, b. a sacrificial anode, c. a drain /fill valve, d. a thermostatic mixing valve.

4. The device of claim 1 further comprising: a. internal tubular heat exchanger in coil form.

5. The device of claim 1 further comprising: a. a support system for the internal heat exchanger comprising two triangles whose legs rest upon the inner vessel walls with a support rods between the triangles supporting the heat exchange coil.

6. The device of claim 1 farther comprising: a. the vessel closure head containing seven holes, attaching three bulkhead fittings to receive the two sealing glands, a sacrificial anode, the heating element.

7. The device of claim 1 further comprising: a. a vent stub pipe, of fitted with a pressure-temperature-vent assembly consisting of a heat trap loop, a reservoir and a vent discharging to atmospheric drain, with direct communication with the atmosphere.

8. A method of heating water for a home wherein: a. a cylindrical vessel with an external heat exchanger which provides a capturing mechanism for the heat lost from the cylindrical vessel and subsequently cycling the captured heat from the external heat exchanger to another heat exchanger within the cylindrical vessel.

9. The water-heating method of claim 8 wherein the external heat exchanger is a coil wound around the cylindrical open head vessel walls.

10. The water-heating method of claim 8 wherein the external heat exchange coil outlet is connected upon final assembly to the internal heat exchange.

11. The water-heating method of claim 8 further comprising: a. insulation surrounding the cylindrical vessel and exterior heat exchanger.

12. The water-heating method of claim 11 further comprising: a. the insulation surrounding the cylindrical vessel forms a rectangular box.

Description

DRAWINGS

[0030] FIG. 1

[0031] Shows a cutaway of the complete invention. [0032] FIG. 1A

[0033] Shows the open head assembly. [0034] FIG. 1B

[0035] Shows a heat exchange coil assembly. [0036] FIG. 1C

[0037] Shows the end view of the coil support, system. [0038] FIG. 1D

[0039] Shows the regenerative pre-heat coil and vessel assembly. [0040] FIG. 2

[0041] Shows cut away the temperature/pressure vent assembly installed. [0042] FIG. 3

[0043] Shows the sealing glands detail (48) pressure pipe from coil, (42) male by female bushing, (43) rubber sealing, washer, (45) sealing, nut. [0044] FIG. 4

[0045] Shows a cutaway of the insulation package. [0046] FIG. 4A

[0047] Shows a front view of the completed invention. [0048] FIG. 4B

[0049] Shows a front and side view of the completed invention. [0050] FIG. 5

[0051] PlumbingStacked option. [0052] FIG. 6

[0053] PlumbingStaged option.

DETAILED DESCRIPTION

[0054] Although the invention is illustrated and described herein with reference to specific embodiments, the invention is not intended to be limited to the details shown, Rather various modifications may be made in the details within the scope and range of equivalents of the claims and without departing from the inventions.

[0055] A vessel assembly (38) (FIG. 1D) comprising a 30-gallon open head drum (1) that forms the open head drum assembly (38) (FIG. 1D) with a open head closure assembly (39) (FIG. 1A) on one end and containing a heat exchange coil assembly (40) (FIG. 1B) with a ring seal (3).

[0056] The open head drum (1) wound in piping such as but not limited to Pex-Al-Pex (4) from open end (6) to closed end of the open head drum (1). The pipe coil extended back to the open end to serve as the initial cold-water inlet (5) and extends beyond the limits of the insulation to act as the regenerated preheated water supply. The piping (6) that ends at the open end of the open head drum (1) awaits closure of the open head drum and attachment to heat exchange coil assembly (8).

[0057] (1) The open head drum assembly (38) (FIG. 1D) wrapped in radiant insulation shell (7), set aside for final vessel assembly.

[0058] The open head closure assembly (39) prepared by boring three holes (45, 46, 47) (FIG. 1A) into the open head closure (2) to accommodate the bulkhead fittings for the attachment of the preheated cold inlet (8) and hot outlet (9) with sealing glands (10) (FIG. 3) and a sacrificial anode rod (11).

[0059] A hole is bored for a heating element (12) and four holes bored for bolting the heating element (12), a thermostatic control device (13), and brackets to the open head closure (2). A reducing bushing (14) with the internal vent (15) attached, installed in the internal vent (15) that is located at the upper most portion of the open head closure assembly (39) (FIG. 1A), set aside for final vessel assembly.

[0060] Heat Exchange Coil assembly (40) (FIG. 1B) comprising of: two concentric heat exchange coils (16) formed of pipe, (possibly but not limited to copper), in series, matching discharge of hot water side. The preheated cold inlet (8) and hot outlet (9) heat exchanger coil pipes are extended beyond the vessel walls via bulkhead fittings and the sealing glands (10).

[0061] The heat exchange coil (16) supported by two triangle pieces (17) and three rods (18) inserted into the heat exchange coils (16). The complete vessel assembly (41) (FIG. 1) consists of the heat exchange coil assembly (40) (FIG. 1B) being inserted into the open head drum assembly (38) (FIG. 1D), the open head closure assembly (39) (FIG. 1A) attached to the ring seal (3) and the sealing glands (10) tightened, the heating element (12) inserted, and the thermostatic control device (13) attached and wired constitutes the vessel assembly (38) (FIG. 1D).

[0062] The vessel assembly (38) (FIG. 1D) insulated in a rectangular container with insulating board (19) and two stub pipes (20), one affixed to a lower bung tapping for the drain/fill valve (21), the other stub pipe (22) affixed to a bushing (14) for attachment to the pressure temperature vent assembly (23) (FIG. 2) once the insulating cover is sealed. The preheat discharge (6) connected to the cold water inlet (8) of the heat exchange coil assembly (40) by means of two 90 degree push connectors (36) and a short pipe (37) (FIG. 4B).

[0063] The pressure-temperature vent assembly (FIG. 2) comprising of a 90 degree elbow (24) attached to a stub pipe (22) in a down direction. A pipe attached (25) to a 90 degree elbow (26) set horizontal, a pipe (27) attached a 90 degree elbow (28) in the vertical upright position. A pipe attached (29) attached to a 90-degree elbow (30) in a horizontal position; a pipe and a male adapter (31) attached to the lower port of the reservoir (32) affixed by a the male adapter (33). The bottom of the reservoir must be in line with the highest level in the tank, a 90 degree elbow (34) affixed to the top outlet of a reservoir (32), a discharge pipe (35).