Abstract: A flow sensor of a domestic appliance has an axle that is substantially perpendicular in the installed state to the flow direction of a fluid channel of the domestic appliance. The bearing component is designed as a single part and has at least two interconnected limbs, each limb having an axle mount for one end of the axle of the flow sensor, wherein the two axle mounts are mutually spaced apart in such a way that they correspond in a relaxed condition of the bearing component to an extension of the axle of the flow sensor. The two limbs are designed to be elastic such that the spacing between the axle mounts can be increased in order to insert the flow sensor between the axle mounts.

Abstract: The invention relates to a safety device (1) for the emergency deactivation of an electrical water heater or a heat pump, wherein the safety device (1) comprises at least one contact pair (70, 80, 90) having at least one first contact assembly (71, 81, 91) and at least one second contact assembly (72, 82, 92), which are designed to direct the current to supply the water heater or the heat pump in a contacted state, and to interrupt the current supply to the water heater or the heat pump in an open state, as well as comprising a retaining device (94) for retaining the second contact assembly (72, 82, 92) on a tension rod (40), wherein the tension rod (40) is designed to release the retaining device (94) and the second contact assembly (72, 82, 92) from the first contact assembly (71, 81, 91) in order to interrupt a current supply to the water heater or the heat pump.

Abstract: A water heater including a cold water intake, a hot water output, a fluid pathway arranged between the cold water intake and the hot water output and adapted to convey water flowing from the cold water intake to the hot water output. A heating element is adapted to heat water that is in the fluid pathway. A power electronics unit is coupled to the heating element. A controller is configured to regulate a temperature of the water in the fluid pathway to an adjustable hot water temperature by controlling the power electronics unit. A water draw-off detector is adapted to detect a water draw-off event and a water sensor is adapted to determine a reference parameter corresponding to a temperature of the water.

Abstract: Method for thermal insulation of an evacuable container comprising an inner container, an outer container and a cavity disposed between the inner container and the outer container, wherein said method comprises a) using a vacuum pump to reduce a pressure in the cavity and after achieving a first value of the pressure interrupting the connection to the vacuum pump, b) subsequently making a connection from a reservoir container of the thermally insulating particulate material to a filling opening provided in the region of the cavity, c) setting the evacuable container into motion, wherein the thermally insulating particulate material flows into the cavity according to a) and the pressure in the cavity increases due to the air introduced with the thermally insulating particulate material, d) terminating the filling at a second value of the pressure by interrupting the connection from the cavity to the reservoir container, e) repeating step a), wherein the output of the vacuum pump with which the cavity is deaer

Abstract: The invention relates to a compensation assembly for use in a hot water device and an associated hot water device. The hot water device includes a water tank for holding water to be heated, and the compensation assembly includes a compensation vessel and a ventilation component that allows air to be exchanged between the compensation vessel and the atmosphere. The ventilation component includes a blocking element designed to prevent water from leaking from the compensation vessel via the ventilation component.

Abstract: An expansion assembly for use in a hot water device, having a water container for receiving water to be heated, includes an expansion tank with a lower expansion tank half shell and an upper expansion tank half shell. The lower expansion tank half shell has a coupling portion for coupling to the water container of the hot water device. The upper expansion tank half shell is configured to be coupled to a cold water feed line. The upper expansion tank half shell and the lower expansion tank half shell are hermetically connected at circumferential edges forming the expansion tank.

Abstract: A water heater including an inflow terminal for connecting a tankless water heater to a cold water supply and an outflow terminal for connecting the tankless water heater to a tap. A fluid channel proves a fluid connection from the inflow terminal to the outflow terminal. A heat element arrangement is arranged at or within at least a section of the fluid channel for transferring heat to fluid present within the fluid channel. An electronic controller is configured to control a heating power provided to the heat element arrangement. A flow sensor is arranged at or within the fluid channel downstream the heat element arrangement. The electronic controller is further configured to detect the presence of air bubbles within the fluid channel based on a change of a flow signal provided by the flow sensor and to adapt the heating power provided to the heat element arrangement in reaction to the determination of air bubbles.

Abstract: A bearing component of a flow sensor of a domestic appliance has a rotary axle which, in the installed state, is oriented so as to be substantially perpendicular to a flow direction of a fluid channel of the domestic appliance. The flow sensor has a first bearing at each of the opposing ends of the rotary axle, two opposing second bearings being contained in the bearing component. The two second bearings are spaced apart from one another in such a way that, in one state of the bearing component, they are engaged with the first bearings of the flow sensor, at least one arm of the bearing component being elastic, so that a distance between the second bearings can be increased in order to insert the flow sensor between the second bearings.

Abstract: A power electronics assembly of a domestic appliance includes a first relay controlling an electrical contact between a first current-carrying conductor and an electric consumer. The assembly further includes a semiconductor switching element that switches the electrical contact between the first current-carrying conductor and the electric consumer and is arranged in parallel with the first relay. A controller is programmed to activate the semiconductor switching element to switch on the electrical consumer before the first relay is closed.

Abstract: A tankless water heater system (100), with a heat exchanger device (20) comprising at least one hollow chamber (21, 22, 23, 24) and at least one electrical heating element (52, 53, 54), and a controller device (30) with a temperature control unit (35), a tap event counter unit (32), a down-time counter unit (33) and a time delay unit (34); an electrical switching element (41, 42, 43) for connecting or is connecting one or several heating elements (52, 53, 54) to/from a power supply; an outlet temperature sensor (27) linked with the temperature control unit (35); a flow rate sensor (29); wherein: the tap counter unit (32) is connected to the flow rate sensor (29) and is triggered when water flow rate exceeds a tap indication threshold the down-time counter unit (33) is triggered and retriggered by the tap counter unit (32) and both provide a down-time event signal after any inactivity period with no water flow and records the duration of inactivity; the time delay unit (34) is connected to and triggered by the

Abstract: The invention relates to an air blower apparatus, in particular a jet air hand dryer, comprising: a housing having an inlet and an outlet, at least one air duct extending inside the housing between the inlet and the outlet, for guiding an air stream, a fan unit for producing a directed stream of air in the air duct, and a UV treatment unit arranged inside a section of the air duct, said UV treatment unit having a treatment chamber for at least parts of the stream passing through the air duct, characterised in that the treatment chamber is at least part of a receiving chamber for a fan impeller in the fan unit, wherein a plurality of lighting adapted to emit UV light are arranged inside the receiving chamber.

Abstract: 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.

Abstract: A method of defrosting a heat pump device including a water tank, a heat exchanger, an electrical heating element, an evaporator, a fan for the evaporator, and a control unit. In a first operating mode, the heat pump device is controlled to heat water inside the water tank. In a second operating mode, the electrical heating element is manually activated to additionally heat the water inside the water tank. In a third operating mode, the electrical heating element is automatically activating to heat the water in the storage tank if: the power supplied by the heat pump device to heat the water inside the water tank is not sufficient; if a time limit after activation of a deicing operation has lapsed; and/or if the number of times the deicing operation has been activated during a predetermined time interval exceeds a threshold value.

Abstract: A tank water heater assembly is provided including a tank water heater and a drain pan provided with a sensor holder for mounting a sensor. The sensor holder accommodates a leak detection sensor at predefined distance above an inner surface of a bottom wall of the drain pan. In this way the presence of harmless small amounts of water in the drain pan do not trigger an alarm. A transport assembly is presented for facilitating transportation of the tank water heater assembly to an installation site and subsequent installation. Finally, a method for installation of a tank water heater assembly is provided.

Abstract: A water heater including a cold water intake, a hot water output, a fluid pathway arranged between the cold water intake and the hot water output and adapted to convey water flowing from the cold water intake to the hot water output. A heating element is adapted to heat water that is in the fluid pathway. A power electronics unit is coupled to the heating element. A controller is configured to regulate a temperature of the water in the fluid pathway to an adjustable hot water temperature by controlling the power electronics unit. A water draw-off detector is adapted to detect a water draw-off event and a water sensor is adapted to determine a reference parameter corresponding to a temperature of the water.

Abstract: A tankless water heater, comprising: a flow channel with a cold-water inlet pipe, a heating unit with an heating element configured to heat water flowing through the heating unit and a hot-water outlet pipe, and a control unit configured to control the tankless water heater, wherein the control unit is configured to receive a power limitation signal of an external facility management system and to control a heating output of the heating element depending on the power limitation signal.

Abstract: A hot water dispenser and a method for determining a boiling point of water in the same. The hot water dispenser contains a reservoir, a heating element, and a sensor. The method includes heating water in the reservoir with a first power value of the heating element during a first period of time until a value indicative of a threshold temperature of water is determined; upon reaching the threshold temperature, heating the reservoir water with a second power value of the heating element, which is lower than the first power value, during a second period of time until a water-temperature-rise-per-time value is lower than a first predetermined value; subsequently, increasing the power value of the heating element to a third power value during a third period of time; determining the boiling-point temperature of water by determining the highest temperature of water between the first and third periods of time.

Abstract: A flow sensor of a domestic appliance has an axle that is substantially perpendicular in the installed state to the flow direction of a fluid channel of the domestic appliance. The bearing component is designed as a single part and has at least two interconnected limbs, each limb having an axle mount for one end of the axle of the flow sensor, wherein the two axle mounts are mutually spaced apart in such a way that they correspond in a relaxed condition of the bearing component to an extension of the axle of the flow sensor. The two limbs are designed to be elastic such that the spacing between the axle mounts can be increased in order to insert the flow sensor between the axle mounts.

Abstract: 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.

Abstract: A method of controlling a heat up of a hot water tank, comprising a tank, which contains water and receives incoming cold-water at a cold-water inlet and outputs heated water through a heated water outlet, the method comprising: heating the water in the tank depending on a thermal energy content calculated as a function of an actual incoming cold-water temperature measured by a cold-water temperature sensor, when a tapping event is identified. A water tank heating device and a controller system for controlling a heat up of a hot water tank depending on a thermal energy content calculated as a function of an actual incoming cold-water temperature.