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; an open head cylindrical vessel; a closure head at the open end of the vessel; a heat exchanger surrounding the vessel; at least one heat exchange assembly internal to the vessel: said heat exchange assembly being in coil form; a vent that communicates with the atmosphere; a heating element; a thermostatic control device; a radiant barrier shell acting as an outer wall of the device such that cylindrical vessel, the closure head, the heat exchanger and the internal heat exchange assembly are surrounded by the radiant barrier shell.

2. The device of claim 1 wherein the radiant barrier shell comprises a rectangular box form.

3. The device of claim 1, wherein the closure head further comprises: a sealing gland system for a water intake and a water outlet; a sacrificial anode; a sacrificial anode; a valve that can be used to drain or fill the open head cylindrical vessel: and a thermostatic control device.

4. The apparatus of claim 3, wherein the closure head further comprises: Seven holes for attaching four bulkhead fittings to receive the two sealing glands, The sacrificial anode, and the heating element.

5. The device of claim 1 further comprising: a support system for at least one heat exchange assembly, said support system comprising two triangles with a leg; the legs rest upon an inner vessel wall with at least one support rod between the triangles to provide support to at least one heat exchange assembly.

6. The device of claim 1, wherein the vent further comprises; A vent stub pipe fitted with a pressure-temperature-vent assembly comprising of a heat trap loop and a reservoir for direct communication with the atmosphere.

Description

DRAWINGS

(1) FIG. 1

(2) Shows a cutaway of the complete invention.

(3) FIG. 1A

(4) Shows the open head assembly.

(5) FIG. 1B

(6) Shows a heat exchange coil assembly.

(7) FIG. 1C

(8) Shows the end view of the coil support, system.

(9) FIG. 1D

(10) Shows the regenerative pre-heat coil and vessel assembly.

(11) FIG. 2

(12) Shows cut away the temperature/pressure vent assembly installed.

(13) FIG. 3

(14) Shows the sealing glands detail (48) pressure pipe from coil, (42) male by female bushing, (43) rubber sealing, washer, (45) sealing, nut.

(15) FIG. 4

(16) Shows a cutaway of the insulation package.

(17) FIG. 4A

(18) Shows a front view of the completed invention.

(19) FIG. 4B

(20) Shows a front and side view of the completed invention.

(21) FIG. 5

(22) PlumbingStacked option.

(23) FIG. 6

(24) PlumbingStaged option.

DETAILED DESCRIPTION

(25) 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.

(26) 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).

(27) 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).

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

(29) 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).

(30) 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.

(31) 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).

(32) 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).

(33) 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).

(34) 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).