A water heater can include a housing and a heating system disposed within the housing, where the heating system is configured to heat a fluid. The water heater can also include a switch coupled to the heating system, where the switch operates between a first position during normal operations and a second position during an outage. The water heater can further include a primary power source coupled to the switch, where the primary power source is configured to provide primary power to the heating system through the switch during the normal operations. The water heater can also include an uninterruptible power supply (UPS) coupled to the switch, where the UPS is configured to provide reserve power to the heating system through the switch during the outage, and where the UPS is integrated with the housing.

A fluid induction heating system includes a heating apparatus having an outer shell and an inner tube. The outer shell may be insulative while the inner tube may be conductive. A fluid chamber may be defined within the outer shell. The area between inner tube and the outer shell may be an outer portion of the fluid chamber, while the area within the inner tube may an inner portion of the fluid chamber. The heating system may also include an electrical system, including electrical wiring around or near the exterior of the outer shell. The heating system may be used in a variety of fluid heating situations, such as pools, heaters, desalination, and energy generation.

The disclosed technology includes systems and methods for operating a fluid heating device comprising an electric heating element and a gas burner. The disclosed technology can include a system and method that can receive flow data from a flow sensor that is indicative of a flow rate of a fluid in a fluid heating system, determine if the flow rate is less than or equal to a threshold flow rate, and output a control signal to heat the fluid with the electric heating element, the gas burner, or both based on the flow rate data.

A heat generating assembly (13), aiming to solve the problem of low heating efficiency in the related art such as a coffee machine. The heat generating assembly (13) includes a water inlet (133), a water outlet (134), and a heat generating body (135) provided between the water inlet (133) and the water outlet (134). The heat generating body (135) includes a heating film (132), a bottom cover (131) for the heating film, the heating film (132) is capable of generating heat upon energization to heat liquid flowing through the heat generating body (135). The heat generating assembly (13) uses film-type heating technology, the heating efficiency is high and accurate control of temperature can be realized.

A fluid conditioning assembly having a body constructed of an insulating material. An inner housing is configured within the body defining a spiral passageway in communication with an inlet for redirecting a fluid flow through an outlet. A shaft extends within the body and rotatably supports a conductive and fluid redirecting plate or like component positioned within the inner housing. At least one magnet or electromagnet is positioned within the inner housing in proximity to the rotating component, causing thermal conditioning of the fluid flow resulting from creation of high frequency oscillating magnetic fields at a given frequency range, the thermally conditioned fluid flow being redirected through the outlet. Additional features include the ability to generate electricity in a cogeneration application of the assembly. Conventional elements can also be incorporated into the assembly for operating simultaneously or being deactivated/turned off after an initial startup period.

A safety device for emergency shut-down of an electric instantaneous water heater. The safety device includes a contact and a counter contact, which are set up to conduct the current for supplying the instantaneous water heater in a contacted state and to interrupt the power supply of the instantaneous water heater in an open state. Further, the safety device includes a mounting device for mounting the counter contact on a tie rod, wherein the tie rod is set up to release the mounting device and the counter contact 4 from the contact to interrupt a power supply of the instantaneous water heater. The contact of the safety device is implemented as a contact rivet which is integrated directly into a circuit board.

A water heater includes a heat exchanger, a heat pump, a first valve in fluid communication with the heat exchanger and the heat pump, and a controller configured to control the first valve. The first valve can be configured to direct water flow toward at least one of the gas heater or the electric heat pump. A second valve in fluid communication with the first valve and the heat pump can be provided, and the controller can be further configured to control the second valve. A water heater inlet and a water heater outlet can be included and in fluid communication with the first valve, and the controller can be configured to monitor a temperature of water entering the water heater inlet and control the first valve dependent upon the monitored temperature.

An instantaneous water heater is provided. The instantaneous water heater comprises a heating mechanism, comprising at least two heating components which are independent from each other; a pipeline mechanism, which is assembled on the heating mechanism; the pipeline mechanism comprises a heat exchange section for heat transfer with outside, a water inlet channel for supplying water to the heating components, and a water outlet channel for outputting hot water; the water inlet channel is at least partially surrounded by the heat exchange section; and a control mechanism, which is at least electrically connected to the heating mechanism. The heat exchange section is in contact with the control mechanism to dissipate heat from the control mechanism.

A fluid warming device has a heat exchange body having an input port and an output port and conducts fluid from the input port to the output port. The fluid warming device has a heater assembly configured to transfer heat to the heat exchange body. The fluid warming device may also have a temperature sensor for measuring a temperature of the heater assembly, and a power sensor for measuring a power to the heater assembly. The fluid warming device also has a controller connected to the temperature sensor and the power sensor. The controller calculates a fluid flow rate and a total volume of fluid delivered through the heat exchange body based on the temperature and the power.

In an illustrative embodiment, a flow-through fluid heating unit includes an annular member, and a heating element deposited on an inner surface of the annular member, the heating element including three sub-heating elements, each sub-heating element being connected to a separate conduit for receiving a separate phase of a three phase electrical power source. The heating unit may include a baffle core including at least one channel providing a fluid flow path, the baffle core being disposed within the annular member and proximate to the heating element. First and second end fittings may be disposed at each end of the annular member, each end fitting including a fluid port for allowing the fluid to flow through the annular member. One of the end fittings may be releasably connected to the annular member to provide access for removal of the baffle core.