| 摘要 |
<p>A device for detecting the liquid level in a tank of an electric household appliance, including an airtight bell connected on one side to the tank and on the opposite side to a pressure switch by means of a hose-carrier nipple; wherein the airtight bell is defined by a rectilinear tube which obliquely protrudes from underneath the tank and externally to the same, towards a front panel of a casing of the household appliance, towards which it is fluid-tightly closed by a screw-on cap carrying the nipple for the connection to the pressure switch; the rectilinear tube is obtained integrally in one piece with a draining sump for the tank arranged immediately underneath a bottom wall of the tank and presents a first threaded end carrying the screw-on cap and a second end, opposite to the first, leading into the sump, flushed with a side wall of the same; shielding means being arranged in front of the second end of the rectilinear tube, preferably to create a siphon between the latter and the tank.
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