A group (6) for supplying hot water in a machine for preparing and dispensing a beverage, for example espresso coffee, comprising: a water accumulation chamber (14) with an inlet (11) for receiving water and an outlet (12); and a heating path (9, 13). The heating path comprises an inlet for receiving water from the outlet (12) of the accumulation chamber (14) and an outlet (15) for dispensing heated water into a brewing chamber (16) for preparing a beverage. The heating path comprises a path bounded by a heatable outer surface (13) and an inner core (9). The inner core (9) comprises a temperature probe (8) located in proximity of the outlet (15) for dispensing heated water.

An electromagnetic induction continuous-flow milk heater for an automatic beverage vending machine has a tubular body that includes an inlet and an outlet. Milk to be heated into the tubular body. Heated milk flows out of the tubular body through the outlet. An electrical winding is wound around the tubular body that can be electrically powered to generate an electromagnetic induction field. The tubular body is made of an electrically conductive material to enable heating by electromagnetic induction from the electromagnetic induction field. The heater can include an insert housed inside the tubular body that extends along a longitudinal axis of the tubular body. The tubular body and the insert delimit, at least between an external surface of the insert and an internal surface of the tubular body, a helical flow channel for the milk, which extends in a helix around the longitudinal axis.

A heating apparatus and method of heating. The embodiments of the invention relate to coffee machine heating apparatuses for providing heated brew water for passing through coffee grounds. The apparatus and method involves using low pressure steam (i.e. less than 1 bar absolute) at a saturation temperature that is substantially equal to the desired brew water temperature. Advantageously, improved temperature control of the brew water is achieved in a manner which is more convenient to an end user. The operating temperatures are more stable (the need for a “cooling flush” is removed) and the operating temperatures is reached in a quicker manner than with conventional machines.

Beverage preparation apparatus for preparing a beverage comprising: —a water tank (2) for storing water, —a brewing unit (3) for receiving a dose of beverage ingredients, —a water line (5) for supplying water from the water tank to the brewing unit (3) including a pressure pump (4) for supplying pressurized liquid to the brewing unit and a fluid heater (29) for heating liquid, —a control unit (6) for selectively controlling the activation of the pressure pump, wherein it further comprises a fluidic interrupter (7) positionable in fluidic interruption position for interrupting the fluidic communication between the water tank (2) and the water line (5) and, reversely, positionable in fluidic communication position for restoring the fluid communication between the water tank and the water line and wherein the control unit (6) is arranged for automatically activating an anti-freeze mode by activating the fluidic interrupter (7) in fluidic interruption position and by running the pressure pump (4) to at least partially empty the water line (5) from water contained therein.

A device for foaming liquid includes a line system and a pump, via which at least one first line of the line system is connectible to at least one storage container in which the liquid to be foamed is stored, and via a second line of the line system is connectible to at least one outlet nozzle, an air-enrichment element by means of which air can pass through the liquid, and a heating element designed as a continuous flow heater. Furthermore, the heating element is arranged in the second line of the line system of the device and is designed as a thick-film heater in which an electric heating resistor is attached to a carrier using thick-film technology, on which carrier a flow path is provided for the liquid.

An apparatus may comprise a heater, a brewer, a chiller, and a heat exchanger. The heater may be configured to heat water to produce heated water. The brewer may be configured to brew a beverage using the heated water. The chiller may be configured to chill the beverage to produce a chilled beverage. The heat exchanger may have a first fluid flow path and a second fluid flow path in thermal communication with the first fluid flow path. An input to the first fluid flow path may be configured to receive source water and an output of the first fluid flow path may be configured to provide the water to the heater. An input to the second fluid flow path may be configured to receive the beverage from the brewer and an output of the second fluid flow path may be configured to provide the beverage to the chiller.

A device for production of milk foam with adjustable temperature includes a pump for conveying the milk from at least one container in lines to an outlet, an air supply for delivering air into the line, a continuous-flow heater and a throttle device. The continuous-flow heater can be disposed on the pressure side of the pump and the throttle device can be disposed downstream from the continuous-flow heater.

The present invention discloses an inner pipe for a liquid heating apparatus, including a hollow pipe body made of a metal or an alloy, where a pipe wall thickness of the pipe body is 0.3-1.0 mm; through a machining method of rolling or pressing, a spiral diversion structure is machined on an inner peripheral wall of the pipe body along an axial direction of the pipe body, so that the spiral division structure is formed to extend along the axial direction of the pipe body. The present invention further discloses a liquid heating apparatus and a manufacturing method therefor. The liquid heating apparatus includes the inner pipe and the outer pipe; a heating assembly is disposed on the outer peripheral wall of the outer pipe.

Heat transfer device (10) for heating a fluid or a fluid foam on demand comprising a path (30) through which the fluid or the fluid foam circulates and at least one layer (11) made of a thermally conductive material, the path (30) being in contact with the layer (11) in such a way that when the layer (11) is heated it transmits heat to the fluid or fluid foam as it circulates through the path (30), wherein the path (30) and the part of the layer (11) in contact with said path (30) are detachably configured so that they are made accessible for being cleaned.

The invention relates to a disposable heat transfer device (10) for heating a fluid or a fluid foam on demand comprising a path (30) through which the fluid or the fluid foam circulates and at least one layer (11) made of a thermally conductive material, the path (30) being in contact with the layer (11) in such a way that when the layer (11) is heated it transmits heat to the fluid or fluid foam as it circulates through the path (30).