A hot water supply device (10) is provided with: a first device (for example, a kitchen remote controller (13)) for performing control relating to hot water supply; a second device (for example, a water heater (11)) that is communicably connected to the first device and performs control relating to hot water supply; and a communication unit that is provided in the first device and can be connected to an external communication network. The first device divides data of control software of the second device acquired from an external device (for example, a server (50)) via the communication unit, into a plurality of parts, and transmits to the second device.

An electric integrated circuit water heater apparatus includes: a cold water inlet for allowing input of cold water into a storage tank with heating elements comprised of integrated circuits configured to exchange heat from the heating elements to the water in the storage tank through a heat exchanger, in which heat produced by running the integrated circuits is recovered into the heat exchanger, thereby heating the stored water by using heat from the integrated circuits. A hot water outlet is provided in the upper portion of storage tank such that the water will have passed all of the heating elements prior to exiting the hot water outlet.

A rotor is a rotor for a pump. The rotor includes a rotor core having a magnet insertion hole and having an annular shape about an axis, a permanent magnet inserted in the magnet insertion hole, and a rotor cover surrounding the rotor core from outside in a radial direction about the axis. The rotor core has a first core portion disposed on an inner side of the magnet insertion hole in the radial direction, a second core portion disposed on an outer side of the magnet insertion hole in the radial direction, and a hole separating the first core portion and the second core portion from each other. The rotor cover has a positioning portion that positions the first core portion and the second core portion in a circumferential direction about the axis.

A method for controlling a water heater comprising: receiving report information transmitted by a user-wearable device at a predetermined frequency; determining whether a user is coming back according to user location information included in the report information; and if the user is coming back, turning on a return water pump to permit water outputted from a water outlet of the water heater to return to the water heater through a water return port. The present disclosure determines a movement direction and the user location by using report information transmitted by the user-wearable device. If the user is coming back, the return water pump is turned on to permit water to return, so that the user can take a hot bath immediately after arriving home, thereby improving user's experience.

This invention relates to a heater. A combustion air blower feeds combustion air to a burner device. The burner device burns a gas-air mixture from the combustion air and a fuel and serves for heating air. A circulating air blower discharges heated air from the heater. A control device acts on at least one component of the heater, wherein a night mode parameter set associated with an operation of the heater in a night mode and a default parameter set are stored in a data storage device. After an activation of the night mode, the control device accesses the night mode parameter set and uses the same for acting on the component. The night mode parameter set effects a reduction of background noise generated by the heater.

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.

The flameless heater system includes an energy source comprising a diesel engine configured to create volumes of air, a hydraulic system to control engine loading for heat generation and for air moving, and a control system, operatively coupled with the energy source and the hydraulic system to control at least one of a speed of the diesel engine, a loading of the diesel engine, or a fan speed.

The disclosed technology includes a system and method of preventing short cycling in a water heater. The system can include a burner, a temperature sensor, and a controller. The controller can be configured to perform several steps to determine whether to turn on a burner and whether to increment a temperature offset value based on the amount of time that has elapsed since the last time the burner was on.

A portable space heater includes a housing with an air inlet through which ambient air is received and an air vent through which heated air is expelled. A centrifugal fan of the heater is configured to drive air flow into the air inlet. A flow channel of the heater is configured to direct the air flow toward the air vent and a heating element heats the air flow in the flow channel. The heater additionally includes a sensor configured to sense proximity of a body part to the air vent and a controller configured to pause operation of the heating element based on the sensing, wherein the centrifugal fan, the flow channel, the heating element, the sensor and the controller are housed in the housing.

A tankless water heater comprising a bare wire heating element is disclosed which is connected to an electronic temperature control system. At least one sensor is furthermore connected to the electronic temperature control system. A fluid heating chamber is made of insulating non conductive material wherein the heating element is located. At least one switch is connected to at least one bare wire heating element and to a phase of an AC line. An electrode system and an electronic detecting circuit are interconnected. The electrode system is arranged in a fluid channel, in a short distance from the bare wire heating element which acts like electrode 1. The electrode 2 of the electrode system is made from a conductive tube material hydraulically connected to a throttle valve made from non conductive material to insulate the electrode 2 from the grounded collector. The electrode 2 is electrically connected to a electronic control system via a conductive material.