A standoff assembly for use in terminating a plurality of resistive heaters disposed within a fluid vessel includes a pressure adapter plate, an electrical enclosure adapter plate, and a plurality of conduits. An end portion of each of the resistive heating elements extends through the pressure adapter plate. The electrical enclosure adapter plate is spaced apart from the pressure adapter plate to define a dry volume therebetween. The conduits are secured to the pressure adapter plate and the electrical enclosure adapter plate. Each conduit is aligned concentrically with each of the resistive heating elements. An electrical termination portion of each resistive heating element is disposed within the conduit.

The invention relates to a device for electrically heating (1) a liquid, comprising a heating body (11), and a housing (3) defining, at least in part, a chamber (30) for circulating the liquid, the heating body (11) comprising at least one electric heating element (7, 9) extending in the chamber (30) and attached to an inner wall of the device defining, at least in part, the chamber (30) for circulating the liquid, so as to form a first mechanical connection. According to the invention, the electric heating device (1) comprises at least one mechanical connecting element (21) arranged in the chamber (30) and mechanically connecting the at least one electric heating element (7, 9) to an inner surface of the housing (3) extending opposite the heating body (11), so as to form a second mechanical connection separate from the first mechanical connection.

Provided is an ultrafine bubble generating apparatus that generates ultrafine bubbles by generating film boiling by causing a heater provided in a liquid to generate heat, the ultrafine bubble generating apparatus including: an element substrate including a first heater that generates the film boiling in the liquid and a second heater that is arranged adjacent to the first heater, in which the first heater and the second heater are driven in different timings.

A flow heater for new forms of vehicles. The flow heater comprises a passageway for liquid, a heating source, a swing mechanism arranged in the passageway, and a sensor for detecting a position of the swing mechanism. In some embodiments, the swing mechanism includes a flap and a stopper wherein the flap is hinged to an inner wall and the stopper is fixed to an inner wall and located to abut the flap in the absence of flow.

The present application provides a water flow heating device with a protection function, including: a heating cylinder, a heating wire disposed in the heating cylinder and a water flow temperature sensor, and a protection circuit respectively connected with the heating wire and the water flow temperature sensor; the protection circuit includes a first voltage comparator, an environmental thermal conductivity detection circuit for detecting an environmental thermal conductivity of the water flow temperature sensor and a protection switch for switching on and off the heating wire; the water flow temperature sensor is connected with an input terminal of the first voltage comparator and the environmental thermal conductivity detection circuit, respectively; an output terminal of the first voltage comparator is connected with the protection switch; and the environmental thermal conductivity detection circuit is connected with an enable terminal of the heating wire. The present application can prohibit the heating wire from being turned on when the water flow is not full or slow, and can also cut off the power supply of the heating wire when an internal temperature of the heating cylinder is too high, thus improving the stability and safety of equipment operation.

The present invention relates to an electric fluid-heating device (1), in particular for a motor vehicle, comprising a housing having a first fluid-circulation chamber (21), at least one electric heating element (4) for heating the fluid in said first chamber (21), an electronic board (81) for controlling a current circulating in said electric heating element or elements (4), at least one thermal sensor. Said device is characterised in that the thermal sensor or sensors are positioned on the electronic board (81) and thermally connected to the first chamber (21) via a heat sink (9).

A closed-loop temperature controller employing at least two sensors: a control temperature sensor and a safety sensor at the heat-transfer element. The heat-generating element is separated from the controlled mass/volume by a transport delay so that the mass or volume that is being heated or cooled is located in a vessel which is located remotely from the heat-transfer unit. Thermally conducting fluid flows through a conduit that connects the heat-transfer unit to the vessel. Upon fluid flow interruption or control sensor removal, the temperature controller quickly detects thermal runaway before the safety sensor has reached the critical temperature. In heated systems, the temperature controller will therefore minimize direct damage and/or overshoot damage caused by excessive heat. It will also maintain the heater's output at an elevated, but non-damaging level to enable a fast recovery to the original setpoint temperature after the nonlinearity subsides.

A swimming pool or spa may include hybrid heater. The hybrid heater includes an enclosure, a first heat source within the enclosure, and a second heat source within the enclosure. The first heat source may include an electric heater. A method of heating a swimming pool or spa using the hybrid heater includes receiving information about a desired temperature of the pool, determining an operating mode of the hybrid heater based on the received information, and controlling the hybrid heater pursuant to the determined operating mode.

Disclosed is a flow heater for automobiles. The flow heater has a metal housing surrounding a housing interior and a flow channel configured for liquid to be heated is disposed in the housing interior and extends from a liquid inlet to a liquid outlet. A heating resistor is arranged in the housing interior and is configured to heat liquid flowing from the liquid inlet to the liquid outlet. A wall separates the flow channel from a dry part of the housing interior, and control electronics are arranged in the dry part of the housing interior. A metal housing cover is provided that has a peripheral groove into which the metal housing engages. The peripheral groove contains adhesive that bonds the housing cover to the metal housing.

A modular manifold for a tankless water heater includes a first cavity member having a first opening, a second opening, and a base wall; a second cavity member coupled to the first cavity member, the second cavity member having a first opening, a second opening, and a base wall; a first cover plate coupled to either the first cavity member or the second cavity member; and a second cover plate coupled to either the first cavity member or the second cavity member, wherein two openings in the first and second openings are covered by the first and second cover plates, respectively, and wherein the base walls of the first and second cavity members, the first and second cover plates, and the two openings in the first and second openings not covered by the first and second cover plates define a fluid flow path in the modular manifold.