The mixing unit for a mixer tap has a generally cylindrical shape defining a main axis and comprises a cartridge comprising a mixing chamber traversed by the main axis, wherein the mixing chamber comprises intakes of the incoming stream and an outlet for an outgoing stream. The mixing unit comprises means for mixing the incoming steams to form the outgoing stream contained in the mixing chamber, and an additional casing extending out of the mixing chamber. According to the invention, the mixing unit comprises a single-piece common part which delimits the mixing chamber, while forming at least a portion of the additional casing. The common part forms a separation wall between the cartridge and the additional casing, extending in a plane that is orthogonal to the main axis, wherein the intakes and the outlet are formed through the separation wall.

A water temperature control system and a water temperature control method are provided. The water temperature control system includes a thermostatic spool, a temperature sensor, a controller, and a stepper motor. The thermostatic spool is configured to mix water at a first temperature and water at a second temperature to produce output water. The temperature sensor is configured to sense a current water temperature of the output water based on a sensing frequency to provide a current water temperature signal. The controller is configured to provide a step number control signal according to a target water temperature signal and a current water temperature signal. Based on a step frequency greater than the sensing frequency, the stepper motor is configured to provide a step number according to a step number control signal to adjust a flow rate of the water at the first temperature and a flow rate of the water at the second temperature.

A cartridge has a base, a slide, a thermostatic actuator, a cover, and a regulation and control system. A mixing chamber has base in an assembled state has two superimposed base parts which, in an assembled state, are superimposed one against the other along an axis with an interpositioned seal. The slide is movable in the chamber to inversely vary the flow sections of two passages, supplied through the two base parts and delimited axially between the slide and the two base parts. The thermostatic actuator in the chamber moves the slide to a regulation position as a function of the temperature of the mixture exiting the chamber. The cover is secured to the base in the assembled cartridge.

A cartridge has a controller, which is movable between an initial position, an intermediate position and a terminal position, an adjuster, which includes a positioner actuated by the controller from a retracted position to an extended position when the controller is moved from the intermediate position to the terminal position, a shutter, which is movable to differentially modify the respective flow rate entering the cartridge, a thermo-actuator, which has a primary part fixedly attached to the shutter and a secondary part moving relative to the primary part as a function of an outlet temperature, and an over-travel spring, which is interposed between the positioner and the secondary part. The positioner is held in the retracted position, when the controller is moved from the initial position to the intermediate position.

A cartridge is disclosed that has a base with a first base portion with a first inlet opening for a first of the cold and hot fluids to be mixed, and a second base portion with a second inlet opening for the second fluid and an outlet opening for a mixture of the cold and hot fluids. The cartridge also has a thermostatic element, as well as a control spool for controlling the temperature of the mixture. The control spool defines a spool axis that is parallel to the base axis. In order to maximize the flow sections of the fluids through the base, the spool axis is offset relative to the base axis.

A mixing unit with a mixer tap for mixing two fluids and a method for manufacturing the mixer tap for mixing fluids are disclosed. The mixing unit has a cartridge, which is provided with a coupling base having an inlet for a first inflow, an inlet for a second inflow, and an outlet for an outflow obtained by mixing the inflows. The mixing unit also has a housing designed to be placed in a coupled position with the coupling base. The housing is designed to change the rate of the first inflow and/or second inflow on the basis of the temperature of the outflow. The mixing unit also includes an attachment for attaching a housing to the coupling base. The attachment allows for movement of the additional housing, in relation to the cartridge, between the coupled position and a separated position.

A hot water supply system includes a water supply pipe for supplying cold water, a hot water supply pipe for supplying hot water heated by a hot water supply device, a drain pipe for draining waste water, a heat exchange device for heating cold water supplied from the water supply pipe using the waste water, and a flow rate control mechanism for controlling, when supplying warm water obtained by mixing cold water heated by the heat exchange device and hot water heated by the hot water supply device, the flow rate of the cold water and the flow rate of the hot water so as to maintain the temperature of the warm water.

A mixer valve of hot and cold water is described, for sanitary fixtures, provided with a pressure balancer of the inlet flows of cold water and hot water. If need be, the valve can also be provided with a temperature regulator and/or a multi-way diverter. The pressure balancer comprises a cylindrical element in which two inlet chambers of cold water and hot water are defined and separated by a movable plunger. When a pressure variation occurs in one of the two inlet flows, the plunger moves correspondingly thus modifying the volume of one of the two chambers, in order to compensate the pressure variation not transmitted to the flows sent to the downstream mixer cartridge. The pressure balancer is coaxial to the other valve components. Advantageously, the movable plunger slides along the longitudinal axis of the valve.

Two problems with existing electronically controlled mixing valves for domestic use is their size and difficulty accessing and repairing them. Their size means that they often become hidden behind wall linings, and because of the way in which they are plumbed into the pipework of a house, they are difficult to access and remove for repair or replacement. Disclosed is a compact and replaceable mixing valve cartridge that can be mated to a fixed fitting that is permanently plumbed into the pipework of a house. The compact size allows the cartridge to be positioned behind the type of removable face plates that are often installed over existing manually operated mixing valves. Simplified valve actuators and a compact mixing and temperature sensing configuration have facilitated the compact size. The valve cartridge can simply be accessed, unbolted and removed, without the need for extensive plumbing re-work.

A water delivery system is disclosed. The water delivery system may have an electronic user interface. The electronic user interface may be a portable device. The electronic user interface may include inputs to select water temperature, water flow rates, water flow patterns, and/or task based presets. A mixing valve for use with either manual faucets or electronic faucets is disclosed.