Abstract: An automatic modulating regulator device and method of operation for use with a non-electrical hot water heat source supplied by a pressurized water supply. The hot water heat source has a hot water circuit to pump hot water to heat exchange elements. The regulator device comprises a valve which when a power failure occurs changes to a normally open state. The regulator device is adapted to be connected to a hot water return conduit of the hot water circuit. A self-powered thermostatic valve is responsive to a temperature sensor and modulates the flow of hot water returned through the regulator device. A flow restrictor is connected downstream of the regulator device for releasing controlled quantities of water from the return hot water conduit to a drain.

Abstract: A liquid heating device, comprising a pump for pumping a liquid, a convertor for converting of a flow of the liquid, heat exchange a unit, the convertor being formed as a cyclone connected with the pump and having a main spiral passage for a tangential supply of the liquid, passage a unit from withdrawal of the liquid, and an additional spiral passage which is directed toward a side which is opposite toward the main passage is directed, the spiral passages having outlets which are offset relative to one another along an axis of the cyclone.

Abstract: A heat transfer system for use with a conventional fireplace for radiating heat at a remote location from the fireplace. The heat transfer system includes a network of interconnecting conduit sections charged with an internal fluid medium and consists of a plurality of coils located within the fireplace so that the fluid medium is subjected to heat generated within the fireplace. The conduit network further includes a radiant convection device for convecting the heat generated within the fluid medium to the surrounding area and an expansion tank located on a cool side of the convection device for storing a volume of the medium for subsequent redelivery to the fireplace coils. A series of first, second and third valves are located along the conduit network and separate the fireplace coils and radiant convection device, the convection device and the expansion tank, and the expansion tank and the fireplace coils, respectively.

Abstract: A flow-quantity control valve controlling hot-water flow to a heat exchanger and a bypass circuit allowing hot water to bypass the heat exchanger are provided along with a pressure-actuated valve in the bypass circuit which is responsive to a pressure increase of hot water from an engine. Inlet-side opening portions, outlet-side opening portions, and a bypass-side opening portion are provided in a control passage of a valve body of the flow-quantity control valve. Main flow of dynamic pressure of hot water sprayed from portions on a small opening-degree side act upon a valve body side of the pressure-actuated valve. Due to this, dynamic pressure of the hot water in a small opening-degree region of the flow-quantity control valve can be effectively used to increase a valve-lift quantity of the pressure-actuated valve, thereby reducing a fluctuation range of blown-air temperature of the heat exchanger.

Abstract: A method for automatically adjusting the temperature of the boiler water in a hot water heating system in proportion to changes in the heat demand rate in the space heated by the boiler water wherein the change in heat demand rate is established on the basis of the off-time interval in the cyclic off and on activation of the pump which circulates the boiler water through heat radiators in the space being heated. The circulating pump off times are measured, and the boiler water temperature is continuously measured. The change in space heat demand rates is calculated by calculating the change in the length of the off-time intervals of the circulating pump. The boiler water control circuits are activated to adjust the boiler water temperature control set points upward or downward in direct proportion to the change in the calculated space heat demand rate. Apparatus for conducting the method.

Abstract: A heating system that allows independent control of the temperatures within different rooms in a building by independently controlling the flow of heating fluid to each room in response to a thermostat provided in each individual room. The output of the thermostat controls the operation of a three-way valve upstream of a radiator or convector in each room. When the room temperature is at or above the setpoint for that room, the valve operates to divert all heating fluid flow through a bypass pipe or shunt extending from the valve to the outlet of the radiator or convector. When the temperature drops below the setpoint, the valve operates to resume heating fluid flow through the radiator or convector while shutting off heating fluid flow through the bypass pipe. In another embodiment, independent control of room temperature in heated air distribution systems, is effected by thermostatically controlled louvers provided at the heated air register in each room.

Abstract: A recirculating hot water system comprises a boiler for heating a continuous supply of hot water, a recirculating water line comprising a supply line connected to an outlet of the boiler for conveying water from the boiler to at least one use station and a return line for returning water not consumed at the station to the boiler, a circulating pump in the return line for continuously circulating water in the water line, a by-pass circuit for by-passing the recirculating line connected at an outlet of the pump and an inlet to the pump, and a by-pass valve in the recirculating line at the by-pass line for directing water at a predetermined temperature through the by-pass line.

Abstract: A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a supply water line from the source, a return water line to the reservoir and at least one heating loop through which water flows from the supply line to the return line, a three-way valve for feeding return water from the return water line to the supply water line to reduce the temperature of water flow to said heating loop and a valve feedback controller for varying the temperature of water flow to the heating loop, has an input to the valve controller representative of outdoor temperature, so that the temperature of water flow to the heating loop is increased or reduced when outdoor temperature falls or rises, respectively.

Abstract: A combination water heating and space heating apparatus includes a water heating unit and a space heating unit releasably coupled with the water heating unit. The water heating unit has a water storage tank and a helically wound tubular heat exchanger inside the tank for exhausting products of combustion from a combustion chamber located in a top part of the tank and for transferring heat from the products of combustion to the surrounding water. The space heating unit is an air handler with an hydronic heat exchanger coil and a blower for blowing air over the coil. Hot water is supplied from the tank to the coil and is returned to the tank by means of a water circulation pump located in the space heating unit. Air blown over the coil is heated by the hot water flowing over the coil.

Abstract: An integrated wet-rotor zoning circulator for circulating fluid within a zone in a hydronic heating or cooling system. The zoning circulator has three primary components: a motor, an impeller casing, and a controller. The controller, which is integrated with the motor, houses a voltage transforming device (e.g., a transformer) and a switching device (e.g., a relay). When a thermostat in the zone being served by the zoning circulator closes, the switching device closes and the pump is activated.

Abstract: The heat charging apparatus includes a chair-like frame structure into which a cube-shaped housing is installed about 1 meter from the floor. The housing includes a heat pump, a fan, and other necessary equipment. On its front side the housing is provided with an air intake and on both side walls as well as on the top with air outlets for the pressurized air produced by the fan. The housing is equipped with pipe connections for the supply of warm water as well as for water to be heated as well as with a drip water outlet. The device has a compact design for the housing or the heat pump with a side length of only 55 cm for an output up to 5 kW. As a consequence, the housing with its content is very light and can be replaced by a single unskilled worker so that vast amounts of installation and maintenance costs are saved.

Abstract: The volume of water in circulation is controlled by means of a bell-type mixer (4) which has a stationary section disc (6) and a somewhat sickle-shaped rotary distributor bell (7). The section disc has at least three separate passage openings, the first of which is connected with the boiler feed pipe (KV), the second (12) with the heating pipe (HV) and the third with the boiler return pipe. The distributor bell (7) is acted upon externally by the heating return water pressure and internally housing a communication duct (19). The distributor bell shunts the boiler feed pipe over a limited area of rotation via the second passage opening (12) with the heating pipe and simultaneously frees a variable area of the opening into the second passage for the admixture of return water. In this way optimal regulation is achieved with little structural, maintenance or operational outlay.

Abstract: In a three-way, variable position, automatically controlled diverting valve that is provided in the return line to the boiler of a hydronic heating system between the heating loop return and the boiler return, the valve having its input from the heating loop return, its through output to the boiler return and its diverted output to the heating loop supply, so that the valve diverts some of the cooler return water to the boiler hot supply water, diluting the supply water to reduce the temperature of supply water that feeds the heating loop, a method and means of adapting the diverting valve so that the valve cannot be positioned so that the diverted water flow therefrom is closed, including a stop plug inserted into a housing of the valve that reduces the range of said variable positioning.

Abstract: An apparatus including a hot water tank directing an outlet conduit into a valve assembly, wherein the valve assembly includes a first and a second outlet conduit directed to a respective water faucet and a bypassing arrangement to the hot water tank respectively. The valve assembly includes a first chamber and second chamber utilizing a bi-metallic bellows shuttle valve to direct water selectively relative to the first and second conduits.

Abstract: A three-way modulated diverting valve is provided in the return line to the boiler of a hydronic heating system between the heating loop return and the boiler return, the valve having its input from the heating loop return, one output to the boiler return and the second output to the heating loop supply, so that the valve diverts some of the cooler return water to the boiler hot supply water, diluting the supply water to reduce the temperature of supply water that feeds the heating loop; and the valve is modulated by a feedback signal representative of the temperature of the diluted supply water. In a preferred embodiment, the feedback modulation is accomplished using a non-electric thermostatic actuator head that drives the valve stem and is controlled by a capillary temperature sensor, the sensor bulb being immersed in the diluted supply water or clamped to the supply line next to the heating loop supply so that it is at the temperature of the diluted supply water.

Abstract: A bypass valve device in particular for a fluid circuit, in particular for a liquid circuit associated with a heater, the device being suitable for being interposed between the fluid inlet and outlet tubes or hoses of the heater. The device is constituted by a unit assembly shaped to provided two passages (24, 30) for the fluid and interconnected by said valve (13), the unit assembly being embedded, preferably by overmolding, in a plastic material or an elastomer material (40) similar to that of the hoses or compatible therewith.

Abstract: This invention relates to an auxiliary heating system for vehicles which is intended for effective heating of vehicles by installing it together with a pre-existing vehicle heating system. This invention utilizes a modified boiler with an improved burner as a heat source instead of engine waste heat. In addition, the invention features various kinds of safety devices. The invention provides for increased efficiency in the heating of a vehicle and yet represents an inexpensive heating system. The invention also expands the scope of vehicles in which the above heating system can be installed by decreasing the weight and lessening the size of the boiler.

Abstract: A radiant heating system especially useful for floor heating is provided with a fluid flow apparatus that includes means for pumping a fluid such as water, a temperature-responsive actuator and a valve positionable within a valve housing in response to measured fluid temperature. The system includes heat transfer means, typically a tube embedded in the floor that receives heated fluid from the flow apparatus which in turn receives fluid at generally a higher temperature from a fluid heating apparatus such as a water boiler. The amount of heated fluid recirculated to the heat transfer means is controlled by the position of the valve in the valve housing.

Abstract: A heating appliance has a burner of the type having full premixing and forced draught and a mixing chamber to which an air supply line and a fuel supply are connected. The mixing chamber has a burner plate which is provided with apertures and which adjoins a combustion chamber in which a heat exchanger is disposed some distance from the burner plate and is passed through by the medium to be heated. A flue is connected to the combustion chamber. The effective heat transfer of the flue gases to the heat exchanger is varied depending on the load on the heating appliance.

Abstract: The invention refers to a mixer valve, particularly for heating and hot water installations, which is integrated into the housing of a circulation pump in such a manner that the wheel-shaped actuator, which is provided with blades, and the running wheel of the circulation pump are arranged with flush axles, so that the mixer actuator can be adjusted by means of coupling links which can be inserted or removed in relation to the running wheel of the circulation pump via a controllable coupling. According to the invention, the actuator is designed in such a manner that, independently of the position of the actuator and/or its blade, a water exchange in the order of magnitude of 10% of the water throughput will take place even in the blocked position, so that the water returning from the heating circuit is mixed and thus warmed prior to returning into the boiler.

Abstract: A jet pump, in particular for hot-water heating systems or water-heating systems with return-flow mixing has a feeder head which is connected with a housing containing the receptor nozzle 13. The housing (7) contains a mixing tube (14) which is connected via a diffuser if needed with a second line connection (12), is coaxial with an injector nozzle (10) and adjoins the receptor nozzle (13); the mixing tube (14) also extends longitudinally through a chamber (22) of the housing in which at least a third line connection (18) and, if desired, a fourth line connection (19), directed respectively transversely to the mixing tube, discharges.In order to attain, e.g.

Abstract: This invention regards a control arrangement for heating systems for localities. Heat is given off continuously and the control may take place by changing the temperature (t.sub.w) of the heat carrier medium, thereby sensing the interior temperature (t.sub.i) in the locality and the outdoor temperature (t.sub.u) outside of the locality. A function controller (33) is fed with a known functional relation between the outdoor temperature (t.sub.u) and the temperature (t.sub.w) of the heat carrier medium. The difference between the existing inside temperature (t.sub.i) and the desired inside temperature (t.sub.r) is stated, and the functional relation between the outdoor temperature (t.sub.u) and the temperature of the heat transfer medium (t.sub.w) is divided up into a number of zones, limited from each other dependent upon the difference between the desired inside temperature (t.sub.r) and the inside temperature proper (t.sub.i).

Abstract: A method of controlling the ratio between the water flow rates in the primary and secondary circuits of hot water heating systems, particularly of low-temperature hot water heating systems, by mixing flow water with return water passing through an adjustable bypass by means of a multi-way mixing device. To make maximum use of the rangeability of said mixing device and to optimize overall heating system control, the bypass water flow rate is controlled as a function of the mixing device position and the bypass is substantially closed when the way from the primary circuit flow piping to the secondary circuit flow piping is fully opened and/or an appropriate signal is given by the heating system controller.

Abstract: The present invention relates to a method and to apparatus for regulating a heating installation in a premises comprising a plurality of heating generators. The apparatus comprises temperature probes (10, 20, 140) which are sensitive to the outside temperature, to the inside temperature, and to the departure temperature of the heating fluid leaving the heating generators. The apparatus further includes means (50, 60, 70, 80 and 100) for determining a reference temperature on the basis of a set temperature (Tc) as indicated by a setting unit (30). A proportional-integral regulator (120), sensitive to the difference between the reference temperature and the departure temperature of the fluid, generates a signal which is applied to threshold detectors which detect the passage of said signal through successive predetermined thresholds, thereby generating successive signals for bringing into service the corresponding heating generator.

Abstract: A pool or spa water heater comprises:(a) a housing containing a combustion chamber,(b) gas burner means associated with the housing to produce hot products of combustion rising in said chamber,(c) a heat exchanger associated with said chamber in the path of said products of combustion to transfer heat to water flowing through said exchanger,(d) said exchanger including inner and outer metal tubes for transferring heat from the outer to the inner tubes and then to water flowing in the inner tube or tubes, said tubes having metal to metal contact,(e) whereby condensation of moisture from said products of combustion on exposed surfaces carried by the outer tubes is reduced.

Abstract: The invention relates to a control unit comprising two bodies, one of which is located in a main fluid-distributing section, such as a hot water heating system. A shunt valve in this main section body provides for shunting the hot water, of a boiler in the main section, between different channels which are enclosed within the two bodies. The second body section is located in a group flow-distributing section, and may be used in conjunction with a circulating pump. The two bodies are connected to each other via a mechanical heat-blocking device, made of a material having a heat conductivity figure which is lower than .lambda.=1.00 kcal/m h .degree.C. This heat-blocking device also establishes a communication for fluid flow between the channels, enclosed in the two bodies.

Abstract: A heating apparatus for a passenger compartment of a motor vehicle including a heater is provided with a bypass passage which bypasses an engine water jacket and an engine driven water pump, and a thermostat valve disposed between a feed passage from the engine water jacket and the heater so that the liquid from the engine water jacket is prevented from flowing into the heating circuit until the liquid temperature reaches to a predetermined level. A rapid warming up of the passenger compartment is enabled by forming a heating circuit with small water capacity through the bypass passage.

Abstract: A wind turbine to convert wind energy into hydraulic energy by a positive displacement hydraulic pump driven by a wind mill. To the oil outlet of the hydraulic pump, a thermo-sensitive control element is attached, which functions when the oil temperature exceeds a certain limit. By the control element, the oil outlet is closed, suppressed, or opened to ensure safety of equipment and for effective use of energy.

Abstract: A system of solar heating by means of fan radiators with a fluid circuit and without storage includes solar panels or collectors connected in series. The solar circuit feeds a heat exchanger, the fluid being propelled through the circuit by a pump. The solar circuit is electronically controlled by an electronic panel, the start-up or shut-off of which is determined by temperature differential sensors. When the solar circuit is activated, the transmission of heat is effected by means of the heat exchanger from which the absorbed solar heat energy is transferred to a heating circuit, and when the solar circuit has reached its stabilization point and its temperature has increased to a predetermined value, a contact thermostat activates a heating circulating pump which circulates a fluid through the fan radiators.

Abstract: A water cooling loop is connected to cool an engine of a railway car or the like and includes a heat exchanger. A system for heating a compartment includes a pump for pumping water to heating elements. The water from the pump is selectively pumped through a first path which includes the heat exchanger or through a second path which by-passes the heat exchanger dependent upon the temperature condition inside the car.

Abstract: A thermally actuated modulating valve preferably for fail safe energy conservation systems includes a valve body having, a main inlet for cold source water, an outlet for heated water, and a fluid transfer chamber connected for delivering heated water to the outlet. A proportioning slide valve assembly formed in said valve body connected to the main inlet to receive cold water therefrom includes, spaced outlets, a slide valve to vary the volume of cold water delivered respectively through the spaced outlets, one of said spaced outlets for delivering varying volumes of cold water to be heated. The valve body has a mixing chamber connected to one of the spaced outlets of the proportioning slide valve assembly to receive cold water therefrom, an inlet for the heated water from the other of said spaced outlets, an outlet for delivering the mixture of cold and heated water to the fluid transfer chamber.

Abstract: A heating system includes a heat storage tank containing a heat transfer fluid (water) electrically heated to a high temperature. A tube/shell heat exchanger having a pair of fluid flow paths arranged in counter flow relationship is provided for extraction of heat from storage tank by the circulation of the heat transfer fluid therethrough. Conduit means connect the outlet of the tank to the inlet of the first flow path. The outlet of the first flow path is connected to the inlet of a temperature responsive diverter valve having a pair of outlets. A first diverter valve outlet is connected to the inlet of the tank and the second diverter valve outlet is connected to the inlet of the first flow path. A pump responsive to the temperature at the outlet of the first flow path causes the heat transfer fluid to be circulated when the temperature at the outlet drops.

Abstract: A heater system comprising a main water discharge and main water return adapted for connection to space or domestic hot water heating means, a main water heater operative for heating water flow therethrough and connected in series with a main pump, and a control system adapted for connection to the space or domestic water heating means and operative to actuate the pump and cause the heater to heat water passing therethrough in response to a signal from a thermostatic sensor in the space or domestic water heating means.

Abstract: In a circulating water heater, a water heater is located in a flow circuit connected in parallel with a domestic water circuit. A heating circuit is connected in parallel with the domestic water circuit. A change-over valve interconnects the flow circuit containing the water heater with the domestic water circuit and the valve is also connected to the heating circuit. A short-circuit line including a pump interconnects the supply flow line and the return flow line in the flow circuit containing the water heater.

Abstract: A water boiler adapted for use in a fireplace is disclosed having an inlet header pipe, an outlet header pipe, and a series of pipes disposed parallel to one another and connected between the inlet and the outlet header pipes. The series of pipes is fashioned so as to form a grate suitable for supporting a log fire, including a horizontal portion upon which the logs may be supported and a remaining portion which extends upward along the rear wall of the fireplace through an arc back toward the top front of the fireplace, whereby heat rising from the fire passes between the series of pipes for added boiler efficiency.A heating system using the fireplace boiler and operating in conjunction with a conventional residential heating system is also disclosed. The fireplace boiler contributes heat a conventional furnace to reduce the amount of energy consumed by the latter.