An in-line heater for a liquid food or beverage preparation machine, in which machine liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into said brewing chamber. The heater has a body incorporating an inlet, an outlet a
An in-line heater for a liquid food or beverage preparation machine, in which machine liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into said brewing chamber. The heater has a body incorporating an inlet, an outlet and a heating chamber extending therebetween, with the inlet, outlet and heating chamber forming together a rigid passage for guiding the liquid circulating through the body, and one or more electric components that are secured on or in the body and connected to a printed circuit board arranged to control the heater. The one or more electric components are rigidly connected to the printed circuit board.
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1. An in-line heater for a liquid food or beverage preparation machine, in which machine liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into said brewing chamber, such heater comprising: a body incorporating an inlet,
1. An in-line heater for a liquid food or beverage preparation machine, in which machine liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into said brewing chamber, such heater comprising: a body incorporating an inlet, an outlet and a heating chamber extending therebetween, with the inlet, outlet and heating chamber forming together a rigid passage for guiding the liquid circulating through the body;one or more electric components that are secured on or in the body and connected to a printed circuit board arranged to control the heater;wherein the one or more electric components are rigidly connected to the printed circuit board. 2. The heater of claim 1 wherein the one or more electric components are rigidly connected to the printed circuit board via rigid connector pins or blades. 3. The heater of claim 1 wherein the one or more electric components are rigidly connected to the printed circuit board via rigid plug and socket members. 4. The heater of claim 1, wherein the one or more electric components comprise at least one of sensors, thermal fuses or electric power components. 5. The heater of claim 1, wherein the one or more electric components comprise resistive heating means. 6. The heater of claim 1, wherein the liquid food or beverage preparation machine comprises at least one component selected from the group consisting of a pump, a liquid level detector in a supply reservoir, a valve, a user interface, a power management arrangement, an automatic beverage ingredient supplier including an integrated coffee grinder, and an automatic supplier of ingredient capsules or pods, and wherein the printed circuit board is arranged to control the at least one component of the liquid food or beverage preparation machine. 7. The heater of claim 1, wherein the one or more electric components comprise a power component which is rigidly connected via a rigid electric power pin and a rigid power connector that has a socket for receiving the rigid electric pin, the rigid connector being resilient to allow displacements of the socket for self-positioning the socket around the pin and to secure electric contact between the pin and the connector. 8. A liquid food or beverage preparation machine comprising a heater as defined in claim 1. 9. The machine of claim 8, for the preparation of a liquid food or beverage by brewing a food or beverage ingredient by circulating liquid through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into the brewing chamber. 10. The machine of claim 9, for the preparation of soup, tea or coffee by brewing a food or beverage ingredient that is contained in capsule or a pod. 11. An inline heater for a liquid food or beverage preparation machine, in which machine liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient supplied into the brewing chamber, the heater comprising: a body incorporating an inlet, an outlet, and a heating chamber extending therebetween, with the inlet, outlet, and heating chamber forming together a rigid passage for guiding the liquid circulating through the body; andone or more electric components that are secured on or in the body and rigidly connected to a printed circuit board arranged to control the heater, wherein the one or more electric components comprise a power component which is rigidly connected via a rigid electric power pin and a rigid power connector that has a socket for receiving the rigid electric pin, the rigid connector being resilient to allow displacements of the socket for self-positioning the socket around the pin and to secure electric contact between the pin and the connector, and wherein the power component comprises a resistive heating means that includes a thick-film. 12. The heater of claim 11, wherein the rigid connector is made of one or more spring blades. 13. The heater of claim 11, wherein the power connector comprises a pair of spaced apart feet for connection to a current supply circuit, each foot being connected to a first rigid spring member, the first spring members being connected together via a second rigid spring member, the second member having a socket for receiving and securing a rigid electric pin, the first and second spring members being resiliently displaceable along different directions for self-positioning the socket with respect to the rigid electric pin and thus providing an electric connection permitting passage of high current therethrough. 14. The heater of claim 13, wherein at least one of the first spring members and the second spring member is generally blade-shaped. 15. The heater of claim 13, wherein at least one of the first spring members and the second spring member are generally M-shaped. 16. A liquid food or beverage preparation machine comprising: an in-line heater comprising (1) a body incorporating an inlet, an outlet, and a heating chamber extending therebetween, with the inlet, outlet, and heating chamber forming together a rigid passage for guiding a liquid circulating through the body, and (2) one or more electric components that are secured on or in the body and rigidly connected to a printed circuit board arranged to control the heater;an electric supply circuit connectable to an electric power source, the heater powered by the electric supply circuit; anda thermal fuse device in thermal communication with the heater and associated with the electric supply circuit, the fuse device being arranged to interrupt the electric supply circuit from the power source when the heater exceeds a temperature limit, wherein the thermal fuse device is reversible and comprises a switch for automatically interrupting the electric supply circuit when the heater exceeds the temperature limit, and the switch is operable by a user to close the electric supply circuit when the heater has a temperature that has returned below the temperature limit. 17. The machine of claim 16, wherein the fuse device comprises an actuator that is arranged to push out a pin, rod or piston against the user switch when said temperature limit is exceeded by the heater so as to actuate the user switch and open the circuit.
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