A liquid heating system includes an instantaneous heater (18) having an inlet (20) connected to a reservoir (62). The outlet (22) of the heater is connected to fixtures (72) which use the heated liquid, and is also connected through a return connection (30) to the reservoir. In an idle mode, a pump 40 draws liquid from the reservoir (62), so that the liquid circulates through the heater and back to the reservoir. A controller (52) actuates the heater to heat the liquid to a first setpoint temperature, so that the liquid in the reservoir stabilizes at the first setpoint temperature. In a supply mode, some or all of the heated liquid flows from the outlet to the fixtures (72). Cold liquid is admitted from a supply (60) to the reservoir, and cold liquid desirably also is supplied to the heater inlet along with liquid from the reservoir, so that the heater inlet receives a combination of these. The controller controls the proportion of cold liquid to liquid from the reservoir in the combination, so as to maintain the heater at a setpoint heating rate while also maintaining the temperature of liquid discharged from the heater outlet at or near a setpoint temperature.

A water heater and thermostatic control device for a lavatory faucet includes a hot water tank having a reservoir and a heating element disposed within the reservoir, the heating element heats ambient temperature water received by the reservoir to produce hot water, a thermal mixing valve configured to mix hot water received from the hot water tank with ambient temperature water to produce mixed temperature water. The water heater and thermostatic control device also includes a shut off valve configured to permit flow of mixed temperature water to the lavatory faucet, wherein the shut off valve includes a diaphragm and an armature assembly, and wherein the diaphragm is configured to permit air to bleed or vent through the shut off valve when the mixed temperature water is not imparting pressure on the diaphragm.

A heating device, including at least one heating unit, which is configured to heat at least one fluid; at least one fluid supply line, which is provided for supplying the fluid to the heating unit for heating; at least one fluid discharge line, which is provided for discharging the fluid from the heating unit after the heating; and a control and/or regulating unit, which is configured to operate the heating unit in a pulsed manner, in at least one operating state, in order to set a particular temperature. The heating device includes a valve unit, which is configured to mix the fluid in the fluid discharge line with fluid from the fluid supply line, upstream from an outlet.

A hybrid water heater incudes a storage tank, a first temperature sensor, a tankless heater fluidly coupled to the storage tank, and a controller configured to determine a target output temperature range for the tankless heater based on a temperature setpoint, measure a temperature of hot water stored in an upper portion of the storage tank using the first temperature sensor, determine whether the measured temperature of the hot water is less than a first minimum temperature setpoint, generate an adjusted target output temperature range for the tankless heater based on a determination that the measured temperature is less than the first minimum temperature by increasing a value of both the lower threshold and the upper threshold, and control the tankless heater to produce the heated water according to the adjusted target output temperature range.

A fluid-heating device for heating fluid includes: a heater having a heat generating part, the heat generating part being configured to generate heat upon application of current; an electric component configured to control the application of the current to the heater; a tank having an opening portion, the tank being configured to accommodate the heat generating part; a top-plate portion configured to close the opening portion of the tank, the top-plate portion being configured to form a fluid chamber through which the fluid flows; and a first communication port and a second communication port configured to allow the fluid to flow through the fluid chamber; wherein the electric component is provided on an outer side of the fluid chamber along the top-plate portion.

The invention relates to the field of devices for artificial fog generation for use in security systems. A fog generator comprises an evaporator with an electrical heating element, a reservoir for a liquid to be evaporated, a pump and a programmable electronic control unit. A novel feature is that the electrical heating element is a coil winded by an additional winding, and a silica wrapping is arranged around rounds of the coil. To supply the liquid to be evaporated from the reservoir through the pump and to the evaporator, the device comprises: tubular connections, an additional reservoir, a general line, a needle-like tube having slots. The programmable electronic control unit comprises a microcontroller, transistor modules and units, sensors connected to other device elements. The fog generator enables to increase evaporation area, speed; to avoid the evaporator's excessive energy consumption in a standby mode; to reduce device weight and sizes.

Apparatus for providing heated cleaning fluid to a vehicle surface includes an inlet port for receiving an amount of fluid, a housing bounding a reservoir in fluid communication with the inlet port, and an outlet port in fluid communication with the reservoir for dispensing an amount of heated fluid. A heater element heats fluid passing from the inlet port to the outlet port through the reservoir. A heat exchanger in thermal contact with the heater element for conveying heat to fluid within the reservoir has a strut that divides fluid entering the housing through the inlet port into two flow paths and elongated fins extending outwardly from the strut at transverse angles that bound fluid flow channels for fluid moving through the reservoir. A control circuit energizes the heater element to heat the heating element and the fluid passing from the inlet port to the outlet port through the reservoir.

The invention relates to an arrangement for heating a liquid. An energy unit (1) supplies a heat exchanger (2) with thermal energy. The heat exchanger (2) transfers the thermal energy to the liquid which is received by a container (3). The container (3) has an opening (21). A pump (20) is connected to the opening (21) of the container (3) and to the heat exchanger (2) so as to deliver liquid from the opening (21) and/or from the heat exchanger (2).

The disclosure provides a control method and apparatus for an energy storage heat exchange electric water heater. The energy storage heat exchange electric water heater includes a water tank, an energy storage electric heater, a heat exchanger, a flow-through electric heater and a thermostatic valve, the flow-through electric heater and the thermostatic valve are controlled to be in an activated operating state at the same time, thus the thermostatic valve is able to mix cold water with hot water outputted from the heat exchanger and then allow mixed water to flow through the flow-through electric heater for being heated. The flow-through electric heater is able to directly heat the mixed water outputted from the thermostatic valve, without heating cold water in the thermostatic valve. Therefore, the temperature of water outputted after the flow-through electric heater heats the mixed water is able to reach the second preset temperature value quickly.

Provided is a liquid supply unit for supplying a treatment liquid to a nozzle that discharges the treatment liquid to a substrate, the liquid supply unit including: a tank for storing the treatment liquid; a main circulation line for supplying the treatment liquid from an internal space of the tank to the nozzle or for recovering the treatment liquid to the internal space of the tank; a supply line connected to the main circulation line to supply the treatment liquid to the nozzle; and a heater module installed in the main circulation line and heating the treatment liquid flowing through the main circulation line to a predetermined temperature, in which the heater module includes: a pipe in which the treatment liquid flows and which is made of a quartz material; and a heating element provided on a surface of the pipe.