초록 ▼

A device for heating a liquid for a domestic appliance, comprising a main body (1) which is connected to a reservoir of liquid and associated with an additional element (3) covering a surface of the main body (1) in order to define a liquid circulation volume, characterized in that the main body exh

A device for heating a liquid for a domestic appliance, comprising a main body (1) which is connected to a reservoir of liquid and associated with an additional element (3) covering a surface of the main body (1) in order to define a liquid circulation volume, characterized in that the main body exhibits a thermal inertia which is lower than that of aluminum and in that the additional element (3) has a serigraphed heating resistor on the surface opposite the surface facing the main body (1).

대표청구항 ▼

The invention claimed is: 1. Device for heating a liquid for a household electric appliance, having a main body (1) provided with an inlet for receiving a liquid from a supply, and an additional element (3) covering a face of the main body (1) to define a liquid circulation volume between said main

The invention claimed is: 1. Device for heating a liquid for a household electric appliance, having a main body (1) provided with an inlet for receiving a liquid from a supply, and an additional element (3) covering a face of the main body (1) to define a liquid circulation volume between said main body and said additional element, said liquid circulation volume being in communication with said inlet, wherein the main body presents a thermal inertia lower than that of aluminum and said additional element (3) has a heating resistance (2) screen printed on its face opposed to that facing the main body (1). 2. Device for heating according to claim 1, wherein the main body (1) is made of plastic. 3. Device for heating according to claim 1, wherein the additional element (3) made of metallic material presents a transversal thermal conduction coefficient (Cth) higher than 40. 4. Device for heating according to claim 3, wherein the additional element (3) is made of stainless steel with a thickness comprised between 0.5 and 1.5 millimeters. 5. Device for heating a liquid for a household electric appliance, having a main body (1) connected to a reservoir for liquid, and associated with an additional element (3) covering a face of the main body (1) to define a liquid circulation volume, wherein the main body presents a thermal inertia lower than that of aluminum, and said additional element (3) has a heating resistance (2) screen printed on its face opposed to that facing the main body (1), wherein the main body (1) has a groove making it possible to define with the additional element (3) a channel (4) for circulation of the liquid. 6. Device for heating according to claim 5, wherein said screen printed resistance (2) is localized substantially in line with the liquid circulation channel (4). 7. Device for heating according to claim 5, wherein the main body (1) is flat and in that the groove is in the form of a spiral. 8. Device for heating according to claim 1 wherein the main body (1) is cylindrical, and receives on its outer face the additional element (3) in the form of a sleeve. 9. Device for heating according to claim 5 wherein the groove is helical. 10. Device for heating according to claim 8, wherein the main cylindrical body (1) is hollow. 11. Device for heating according to claim 1 wherein a temperature sensor (12) is arranged on the additional element, and in that the device comprises an electric/electronic circuit connected to the heating resistance in order to control the temperature of the additional body. 12. Device for heating according to claim 3, wherein the additional element (3) is made of stainless steel with a thickness comprised between 0.8 and 1 millimeter. 13. Device for heating according to claim 1, wherein the liquid is water and said device further comprises a reservoir constituting the supply and connected to supply the water to said inlet. 14. Device for heating according to claim 5, wherein the liquid is water, and said liquid circulation volume is defined between said main body and said additional element and is connected to receive the water from the reservoir.