Abstract: A water heater control system comprising a temperature sensor, an anode rod, and a controller. The controller is configured to receive a signal indicative of a temperature from the temperature sensor and apply a voltage and/or current to the anode rod. A mounting bracket mates with a spud of a water heater and provides a conduit space for conductors providing connectivity among the controller, temperature sensor, and anode rod. The mounting bracket may provide mechanical support for the anode rod and the temperature sensor. The mounting bracket may comprise a housing mechanically supporting and surrounding the controller.

Abstract: A device for supplying ammonia with solid adblue includes a urea tank, a gasholder, a heating apparatus, a mixing mechanism, a one-way valve, a first temperature sensor, a second temperature sensor, a first baroceptor, a controller. The mixing mechanism includes a first pipe, second pipe a third pipe, and media. The device is easy to has the same temperature everywhere, and then the heat distribution of the urea tank can be evenly. Thus the effectiveness about the heating apparatus is elevated.

Abstract: A water supply and heating system that includes a flexible water tank, a flexible heating carpet and an electrical connection mechanism. The water tank includes a flexible outer layer and separable inflatable and collapsible water bag. The water bag is equipped with a water inlet and outlet hoses for receiving supplying water. The water bag is positioned inside the outer layer and is designed to remain collapsed when and to inflate when filled with water. The outer layer too is designed to inflate when the water bag is filled with the water and to deflate when the water is drained from the water bag. A dry space is defined between the outer layer and the water bag in which the heating carpet is positioned. The heating carpet includes flexible flat electrical heating strips that are connected to the electrical connection mechanism.

Abstract: A hot water heater is provided and includes a tank, a cold water supply, a hot water outlet, and a heating element. The element has a component with incorporated screw bulkhead, plastic terminal block, resistor and Ultem sleeve.

Abstract: The invention relates to a hot water heater that includes a tank, one or more heating elements, one or more thermostats and one or more heater exchanger tubes. The tank has a water outlet and one or more water inlets. The one or more heating elements extend within the tank. The one or more thermostats function to control the energy applied to the one or more heating elements. The one or more heater exchanger tubes are positioned within the tank. Each heater exchanger tube has a first end with a first opening and a second end with a second opening and defines a channel between the two openings. The second opening in the channel opens into the tank. Each heater exchanger tube surrounds at least a portion of one heating element. The water inlet includes an opening into the heater exchanger tube for water to enter the heater exchanger tube.

Abstract: An apparatus includes an inner rim, a base wall, a side wall and an outer rim. The inner rim has a first opening formed therein. The base wall extends outward from an inner edge of the inner rim and is integral with the inner rim. The side wall extends outward from an outer edge of the inner rim and is integral with the inner rim. The outer rim has a second opening formed therein and an inner edge integral with the side wall. The inner rim, base wall, side wall and outer rim are formed to prevent liquid seepage to one or more surrounding components of an appliance in which the apparatus is installed.

Abstract: A method is provided for interconnecting a single electrical heating element of a hot water heater to first and second AC electrical power sources. Typically, these first and second AC electrical power sources include a utility provided electrical power source and a renewable power source that generates AC power from DC power. The method includes operating a controller that selectively connects and disconnects the first and second power sources. If sufficient electrical power is available from the renewable power source, the utility provided electrical power source may be disconnected to preferentially utilize renewable energy.

Abstract: A heater assembly for a fluid reservoir includes an outer housing coupled to a flange on the fluid reservoir, an inner tubular member disposed within the outer housing, the inner tubular member having a central passageway therethrough, wherein an annulus is formed between the outer housing and the inner tubular member, and a heating device coupled to a lower end of the outer housing and having heating elements which extend upwardly into the central passageway of the inner tubular member.

Abstract: A heater assembly for a fluid reservoir includes an outer housing coupled to a flange on the fluid reservoir, an inner tubular member disposed within the outer housing, the inner tubular member having a central passageway therethrough, wherein an annulus is formed between the outer housing and the inner tubular member, and a heating device coupled to a lower end of the outer housing and having heating elements which extend upwardly into the central passageway of the inner tubular member.

Abstract: The water heater (2) or steam generator comprises a chamber (4) in two sections (5, 6) formed in particular by stamping. Inside this chamber a heating element (8) is arranged, which has a spiral-shaped main section (10) and two end sections (11, 12) passing through two circular openings of the chamber. The two end sections are welded to the chamber by a laser beam such that the weld obtained is continuous and ensures a good mechanical fixture of the heating element and an adequate tightness for the water heater or steam generator. For this purpose, a flange (18) is arranged at the periphery of each opening. Moreover, the two sections of the chamber have a widened edge (28) to allow them to be welded effectively.

Abstract: Disclosed is a heating unit which can comprise a tube, or pipe, having an aperture therein which can be configured to receive a heating element. In various embodiments, the heating element can comprise a resistive element which can be configured to generate heat when a voltage differential is applied thereto. In certain embodiments, the heating unit can further comprise a collar which is threadably engaged with the tube, wherein a flame path, or exhaust path, can be defined between threads on the pipe and threads on the collar, for example. In certain embodiments, the flame path can comprise a passageway defined between the circumference, or perimeter, of the tube and the collar. Such a flame path can be configured to allow pressurized gasses to safely escape from the tube along a predetermined path.

Abstract: This invention relates to an apparatus to efficiently and rapidly heat any liquid or fuel by providing large heat distribution. This apparatus has innumerable applications for efficiently heating water/fuel, using limited resources and providing cost-savings to private and commercial entities.

Abstract: A system for preventing a deicer from being removed from a liquid receptacle includes a deicer, an anchoring assembly and a tether. The deicer includes a main body and a heating element. The heating element is configured to heat liquid within the liquid receptacle. The anchoring assembly is configured to be secured to or within the liquid receptacle. The tether has first and second ends. The first end is securely fastened to a portion of the deicer. The second end is securely fastened to the anchoring assembly. The anchoring assembly is configured to ensure that the deicer remains within the liquid receptacle.

Abstract: A modular water heating assembly containing two heating elements (1, 2), each having a thermostat module (5, 6) inserted into a sensing tube (3, 4) and attached to the same threaded boss (7). The heating elements are therefor contained in a single assembly with the elements having a fixed temperature set point differential such that the elements are switched on or off to maintain a constant temperature and reduce energy consumption by minimizing temperature overshoot.

Abstract: A vertical water heater includes a machine body installed therein with plural quartz heating tubes respectively composed of a quartz external tube having its opposite ends sealed and a quartz internal tube positioned in the quartz external tube. Each quartz internal tube is provided with a remote-infrared-ray heating member in the interior and has one end connected with an electrode terminal. Each quartz external tube has its lower wall bored with plural water intakes 212 and its upper wall bored with vapor vents. The machine body has its bottom provided with a water inlet and a water outlet and its topside bored with an exhaust vent having a pressure release valve assembled thereon. The vertical water heater carries out heat conduction by vapor and by light and heat radiation, impossible to produce water stains and able to economize energy.

Abstract: A high efficiency, peak-power reducing, domestic hot water heater is described. It comprises a closed tank having a predetermined water holding capacity. A hot water outlet is provided in a top end wall of the tank. A cold water inlet is provided in a side wall of the tank adjacent a bottom wall thereof. Three spaced apart resistive heating elements project substantially horizontally in the tank. A bottom one of the resistive heating elements extends in the tank and spaced slightly above the bottom wall. A middle one of the resistive heating elements extends in the tank at a level close to an average maximum water consumption volume drawn during a peak power demand time period. A top one of the resistive heating elements extends between the middle element and the top end wall of the tank. The bottom element has a low watt density in the range of from about 15 to 30 W/in2.

Abstract: A heating system for heating fluid media including a carrier unit, a heating unit arranged on the carrier unit and a heat transfer element arranged on the carrier unit and includes a material which is a good conductor of heat, which heat transfer element has a first mounting portion for mounting a first safety device which responds at a first response temperature and a second mounting portion for mounting a second safety device which responds at a second response temperature which is lower than the first response temperature, which heat transfer element has a first temperature pickup portion which is in direct heat-conducting contact with the heating unit and the first safety device. The heat transfer element has a second temperature pickup portion is spatially separate from the first temperature pickup portion and in heat-conducting contact with the medium to be heated and the second safety device.

Abstract: The invention relates to a urea supply system for a waste gas cleaning catalyst of an internal combustion engine, comprising a urea tank for the receiving of urea solution, a connecting line that connects the urea tank with a waste gas cleaning catalyst, a pump in order to pump urea solution via the connecting line from the urea tank to the catalyst, and a heating insert for the defrosting of frozen urea solution. According to the invention it is provided that the return line is configured and arranged in such a manner that, during operation, because of the urea solution discharged from the return line there is prevented the forming of an air gap between the heating insert and the frozen urea solution. The invention relates also to a heating insert for such a urea supply system.

Abstract: An electric water heater has a tubular side port insert, projecting into the interior of the filament-wound plastic tank portion of the water heater tank, operative to conduct tank water heat to an external temperature controller. The insert has a tubular base extending through the tank wall and circumscribing a cold pin portion of an electrical resistance type heating element extending into the tank, and a hood portion forming a horizontally inward extension of the insert base and extending along only a top side portion of the element in an upwardly spaced relationship therewith so that no portion of the insert extends beneath the active portion of the heating element. In this manner, scale forming on the active portion of the element, and falling therefrom, does not become trapped between the heating element and the side port insert, and overshoot of the controlled tank water temperature is substantially reduced.

Abstract: The invention relates to a tank heating system, in particular for a urea tank of an internal combustion engine, comprising: a housing (2) in which is provided at least one PTC element, an electric connection line (3, 4) that is connected to the PTC element in order to carry a heating current via the PTC element, an intake pipe (5) for the conveyance of fluid, wherein at least a section of the electric connection line (5) is configured as a resistance heating element, that is in heat-conducting conduction with the inside of the intake pipe (5).

Abstract: A fluid heating device includes a heating part and a plurality of heat transfer sections. The heating part is disposed in a fluid stored in a container and is elongated in an axial direction for heating the fluid between a lower portion and an upper portion of the container by being supplied with electricity. The heat transfer sections arranged along the axial direction of the heating part. Each of the heat transfer sections has a plate shape extending from the heating part to a radial outside of the heating part approximately perpendicularly to the axial direction of the heating part.

Abstract: A high efficiency, peak-power reducing, domestic hot water heater is described. It comprises a closed tank having a predetermined water holding capacity. A hot water outlet is provided in a top end wall of the tank. A cold water inlet is provided in a side wall of the tank adjacent a bottom wall thereof. Three spaced apart resistive heating elements project substantially horizontally in the tank. A bottom one of the resistive heating elements extends in the tank and spaced slightly above the bottom wall. A middle one of the resistive heating elements extends in the tank at a level close to an average maximum water consumption volume drawn during a peak power demand time period. A top one of the resistive heating elements extends between the middle element and the top end wall of the tank. The bottom element has a low watt density in the range of from about 15 to 30 W/in2.

Abstract: The present invention discloses an electrical water heater including a container body which is adapted to contain a predetermined volume of water, a heating unit mounted to the heater body for heating the water, and a temperature control unit for operating the heating unit to heat the water. The temperature control unit includes a temperature adjuster for setting a heat-up temperature of the water, a thermal sensor for instantly monitoring a temperature of the water, a controlling circuit electrically coupled to the thermal sensor and the temperature adjustor for comparing the heat-up temperature and the temperature, whenever the temperature and the heat-up temperature are not matched, the controlling circuit is capable of outputting an operative signal to heating unit to manage a heating process.

Abstract: An external reset device that is operable in combination with an electric water heater is disclosed. The external reset device is attached to an element cover that is mounted to the water heater and conceals the water heater's control device, such as a manual reset thermostat. The external reset device comprises a bushing member and a key member attached to the element cover. The bushing member is aligned with a reset button on the control device. The key member is adapted for insertion into the bushing member to depress the reset button and close a switch, enabling the heating elements of the electric water heater to power ON and heat the water within the electric water heater.

Abstract: A bracket operable to support a temperature control device and a sensor probe at an external surface of a water tank for controlling and monitoring the water temperature of the tank. The bracket comprises a first receptacle, a second receptacle, and a coupling feature. The first receptacle is operable to receive the temperature control device. The second receptacle is operable to receive the sensor probe. The coupling feature is operable to attach the bracket at the external surface of the water tank.

Abstract: A used cooking oil and grease storage tank is comprised of a plastic material such as, polyethylene. Advantageously, a metal heating element or member is secured to a top cover member of the tank and extends downward into the used cooking all and grease stored with in the plastic tank member. Input and drain connections are also preferably made through the top cover member.

Abstract: A liquid heater comprising a plurality of storage compartments for containing liquid to be heated. The storage compartments being connected together in series and comprising at least a first end compartment for receiving liquid to be heated and a second end compartment from which heated liquid can be drawn. A heating means is provided in each compartment for heating the liquid contained therein. A first flow control means is operable to allow liquid in one compartment to flow into the next compartment in a flow direction towards the first end compartment when liquid contained in said one compartment reaches a predetermined temperature. A second flow control means is operable to allow liquid flow from one compartment to the next compartment in a flow direction towards the second end compartment while preventing reverse flow.

Abstract: Electrical components projecting outwardly from the storage tank portion of an electric water heater are shielded from foam insulation material being injected into an insulation space between the tank and an outer jacket portion of the water heater by a hollow, open sided foam dam structure extending through a jacket opening and circumscribing the electrical components. Force exerting projections on the dam engage the interior side surface of the jacket and forcibly hold the inner side of the dam structure in sealing engagement with the tank. The projections also hold an outer side peripheral lip of the dam in a an outwardly and resiliently deflected orientation in which it is sealingly pressed inwardly against the outer side surface of the jacket around the periphery of the opening therein to prevent injected foam from being forced outwardly through the jacket opening.

Abstract: The invention relates to armoured heating elements. The invention specifically relates to a heating device (1) consisting of a tubular envelope, wherein a heating element (4) surrounded by insulation (3) is arranged, said heating element (4) is connected to an electric supply circuit by connecting (14) rods and pins (10,12) and said tubular envelope (2) is provided with two cylindrical sealing beads (16) arranged in the ends thereof, whereby at least one of the beads known as a specific bead (16) is in direct contact with the insulation (3) surrounding the heating element (4); The invention is characterized in that the specific bead (16) comprises an axially transversal recess (18), wherein a thermal fuse (20) is inserted and electrically and serially mounted with said heating element (4).

Abstract: An electric water heater for use with a livestock water tank includes a heating element, a housing including a drain plug fitting, and a power cord. The power cord is interconnected with the heating element through a temperature control device, e.g. a thermostat, for delivering electrical power to the heating element in a controlled fashion so as to regulate the temperature of the contents of the tank. The heating element and housing are sized and configured for insertion through the drain plug opening from the outside of the tank. The housing includes a drain plug fitting for affixing the heater to the tank through the drain plug opening in a sealed manner, thereby preventing inadvertent removal of the heater and also preventing the contents of the tank from leaking out of the drain plug opening. The fitting includes a threaded portion or boss sized for insertion through the drain plug opening and a back wall which is larger than that of the drain plug opening.

Abstract: An electric water heater for use with a livestock water tank includes a heating element, a housing including a drain plug fitting, and a power cord. The power cord is interconnected with the heating element through a temperature control device, e.g. a thermostat, for delivering electrical power to the heating element in a controlled fashion so as to regulate the temperature of the contents of the tank. The heating element and housing are sized and configured for insertion through the drain plug opening from the outside of the tank. The housing includes a drain plug fitting for affixing the heater to the tank through the drain plug opening in a sealed manner, thereby preventing inadvertent removal of the heater and also preventing the contents of the tank from leaking out of the drain plug opening. The fitting includes a threaded portion or boss sized for insertion through the drain plug opening and a back wall which is larger than that of the drain plug opening.

Abstract: A heating vessel for concentration is formed in an elongated one, and a baffle plate is arranged to increase sulfuric acid liquid concentration at an outlet to a high level. The heating vessel for concentration and a heating vessel for distillation are installed so that the respective heating vessels have substantially the same waste sulfuric acid liquid level therein, forming continuous flow of the sulfuric acid liquid without presence of a valve or an intermediate tank in a connecting pipe. The heating vessel for distillation is formed in an elongated one with a baffle plate arranged therein to increase the impurity concentration included in concentrated sulfuric acid liquid at an outlet to a high level.

Abstract: A fitting for connecting a gas control valve to a water storage tank of a gas water heater comprising a base member having an elongated opening sized and shaped to receive a mating locator attached to the tank, which permits connection of the valve and tank together and allows relative movement while the connection is maintained.

Abstract: An electric water tank heater is installable through the drain plug opening of a water tank. The heater includes a power cord interconnected with a heating element through a temperature control device for delivering electrical power to the heating element in a controlled fashion. A housing hermetically seals the interconnection between the heating element, the power cord and the temperature control device. The power cord extends through the drain plug opening of the tank and terminates in a conventional male plug that is configured for insertion into a reciprocal power outlet. A drain plug adapter is secured about the power cord and is mountable through the drain plug opening in a water-tight fashion. The drain plug adapter may be permanently mounted about the power cord or may be removably mountable about the power cord. The power cord may include a detachable connector interposed between the heating element and the male plug.

Abstract: An apparatus for sealing an end portion of a hot-water tube in which electric heating wires are inserted enables electric heating wires in hot-water tubes to extend through to the outside, while preventing leakage of water from the hot-water tubes. A plug (3) is screw-connected to the end portion (1a) of a hot-water tube (1). A silicone cock (4) of an elastic material, through which coated electric heating wires (2) of the hot-water tube are placed, is inserted into the cylinder-like concave (3b) of the plug (3). A crown nut (5) is screwed onto the plug (3), pressing the cock (4) to enhance the water-tightness of the end portion of the hot-water tube and to allow the electric heating wires to be placed effectively from inside to the outside of the hot-water tube.

Abstract: A new encapsulated heating element fluid heater for heating a fluid such as water. The inventive device includes a vessel and an end cap. The end cap has a plurality of bores therethrough extending between the first and second ends of the end cap. A plurality of elongate heating element rods extend through the bores of the end cap and each heating element rod has a heating portion outwardly extending from the first end of the end cap and an electric coupling portion outwardly extending from the second end of the end cap. The first end of the end cap is inserted into an open end of the vessel such that the heating portions of the heating elements extend into the vessel. The end cap is then welded to the end of the vessel.

Abstract: The present invention presents a heat dissipating system for protecting a hot water tank dispenser from damage during a dry operation. The dispenser includes a hot water tank with a plastic wall. The hot water tank contains a heating element extending through a plurality of bushings mounted to the plastic wall. The heat dissipating system comprises at least one heat dissipation plate mounted to the plastic wall by the bushing and isolated from the heating element by the bushing.

Abstract: An electric water heater is provided with simplified phase conversion apparatus including a terminal structure having replaceable line lug portions which are wired to a single phase row of multi-pin connector sockets by single phase routing circuitry, and to a three phase row of multi-pin connector sockets by three phase routing circuitry. Electrical supply wires from sets of fuse holders connected to multiple thermostat/heating element sets are grouped and connected to associated multi-pin connector plugs. To ready the water heater for single phase operation, the plugs are connected to the single phase row of sockets, and to convert the water heater to three phase operation the plugs are simply disconnected from the single phase sockets and connected to the three phase sockets. In this manner the necessity of individually repositioning all of the fuse holder wires on the terminal structure to change from single to three phase operation, or vice versa, is eliminated.

Abstract: A screwplug type water heating unit (10) has a body (12) through which ends (14a, 14b) of a heating element (14) extend. Separate terminal quick connects (22) have tabs (38a, 38b) which engage the ends of the heating element. Electrical leads (L1, L2) which connect with the ends of the heating element are separately engaged in slots (50) of each terminal quick connect by an engagement tab (60) so the heating element is electrically connected in a circuit supplying power to the heating unit. A terminal block (24) attaches to an outer face (26) of the screwplug. The terminal block has openings (94a, 94b, 96a, 96b, 98a, 98b) in it by which the terminal quick connects are installed in the terminal block. The terminal quick connects each have a tab (70) received in a slot (98a, 98b) formed in the terminal block to attach the terminal quick connects to the terminal block.

Abstract: An electric water tank heater is installable through the drain plug opening of a water tank. The heater includes a power cord interconnected with a heating element through a temperature control device for delivering electrical power to the heating element in a controlled fashion. A housing hermetically seals the interconnection between the heating element, the power cord and the temperature control device The power cord extends through the drain plug opening of the tank and terminates in a conventional male plug that is configured for insertion into a reciprocal power outlet. The power cord includes detachable connector interposed between the heating element and the male plug. The connector is smaller than the electrical plug, and, as a result, the heater may be installed through drain plug openings that are too small to permit the passage of the electrical plug. The connector can be positioned anywhere along the length of the power cord, and integrally formed with the male plug or the heater housing.

Abstract: A water heater heating element including a base member adapted to extend through and sealingly engage a wall of a water heater tank, the base member having a recess; a thermistor positioned in the recess; members connected to the thermistor and extending outwardly of the base member to transmit temperature information; a sheathing sealed to and extending outwardly from the base member; a heating coil positioned within the sheathing; cold pins connected to opposed ends of the heating coil and to the base member, the cold pins being sufficiently long that heat generated by the heating coil is not detected by the thermistor; and members connected to the cold pins and extending outwardly of the base member to transmit power to the heating coil.

Abstract: A sanitary fluid heater includes a corrosion resistant stainless steel housing, a stainless steel cap securely positioned over an open end of the housing, and a heating element disposed within the housing. The cap defines an internal cavity which includes an internal wall having an aperture therethrough for receiving an end of the heating element which extends beyond the open end of the housing to form a corrosion resistant hermetic seal over the open end of the housing. Fluid contacting inner surfaces of the housing and the cap are polished smooth. In one embodiment, inlet and outlet fittings are attached to the housing to define, respectively, a fluid inlet and a fluid outlet. The inlet and outlet each have a sanitary fitting at an end thereof which faces a corresponding sanitary fitting of a respective fluid inlet or fluid outlet line. Gaskets placed between facing sanitary fittings and clamps form fluid-tight connections between the facing sanitary fittings.

Abstract: A screwplug type water heater (10) has a heating element (12) immersible in a water heater tank (T) to heat water (L). Electrical terminals (28) on the outer end of the heater connect the heating element into a heater circuit (H) for a control unit (14). The control unit also includes a sensing circuit (S) for the unit to be responsive to water temperature inputs to turn-on the heater to heat water to a desired temperature and maintain it there. A thermistor (16) provides a temperature input to the control circuit. The thermistor is encapsulated in a bracket (32) mounted in, or integrally formed with, the screwplug to sense water temperature. Terminals (36) on the outer end of the heater allow the thermistor to be connected into the control circuit.

Abstract: Disclosed is a water distiller of the type having a raw water container, a heater for boiling water in the container and a thermostat for disabling the heater. In the improvement, the container includes a water cavity having a upper perimeter around a panel and the heater is mounted in heat-transfer relationship to the panel. The container includes a thermostat in heat-transfer relationship to the panel and connected to the heater. When water diminishes to a level at which the panel is no longer submerged, the panel temperature rises and trips the thermostat.A heater retention member secures the heater to the panel and a reflective heat shield has a first portion spaced from the retention member. The heater is between the panel and the first portion. The thermostat projects through an aperture in the retention member and an opening in the heat shield so that such thermostat is in intimate, heat-transfer relationship to the panel.

Abstract: A compressible and thermally conductive heat transfer membrane is placed between heating blocks and the bottom of a reservoir in a steam oven. This heat transfer membrane assists in distributing the heat from the heating block to the reservoir while serving as a compliant interface for maximizing contact uniformity and heat distribution between the heating block and the reservoir. Optionally, spaces within and around the heat transfer membrane may be filled with a thermally conductive grease material to facilitate thermal contact and heat transfer. The inclusion of the heat transfer membrane in steam ovens provides an economical, thermally efficient way to compensate for surface irregularities and mis-matches between heating blocks and reservoir surfaces.

Abstract: Multiple resistance type electric heating elements projecting into the interior of the storage tank portion of an electric water heater are protected against dry firing damage by using a water soluble member, representatively a sugar cube, positioned in the empty tank and blocking the spring-driven movement of a switch closure member that maintains an electrical circuit in an open state preventing electrical current flow through any of the heating elements. When the tank is initially filled with water the sugar cube dissolves, thereby unblocking the switch closure member and permitting it to be spring-driven into a circuit closing position to permit electrical current flow through the heating elements.

Abstract: An immersion heater has a support plate on which there is provided an electrical heating element in the form of a printed circuit conductive track. The element is provided with a portion which allows it to be clamped in direct relation to a control unit in order to provide direct electrical, thermal, and mechanical connection to that unit. This allows the control unit to operate in the same manner as a control unit connected to a conventional immersion heater. A water heating vessel using the immersion heater mounted to a control unit through an aperture in the base of the vessel is also described.

Abstract: A Deglor furnace includes heating elements each having a heater rod being surrounded by a protective tube. The protective tube is mounted on a ceiling of the Deglor furnace and is run through an opening in the ceiling into the interior of the Deglor furnace. Heat insulation of the ceiling which borders the opening is protected against corrosive gases from the interior by a shield.

Abstract: A lined water heater storage tank having a welded metallic shell and a bag-like liner within the shell. The welded metallic shell has ports for flow of water into and out of the storage tank, and the liner has fittings corresponding to the ports on the shell for the flow of water into and out of the liner. The fittings on the liner are mounted on the ports on the metallic shell. The bag-like liner prevents contact between water within the liner and the inner surface of the shell.

Abstract: A combined heating element and thermostat for use in a water heater. An electrical heating element includes a U-shaped rod having first and second legs, the first leg being longer than the second. A plug fits in a sidewall of the heater. The rod is installed in the plug. The outer end of the legs are inserted in the plug. A thermostat is also mounted in the plug. An electrical terminal is attached to the plug and includes a first terminal contacting the outer end of the first leg of the rod. A second terminal contacts the other leg of the rod. A switch connects and disconnects the second terminal with the second leg of the rod. The switch is movable by the thermostat and includes a bumper element. The thermostat moves the bumper to disconnect the rod leg from the terminal when the water is heated to a desired temperature.