SELF-CLEANING MILK FROTHING DEVICE
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United States of America Patent
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Issued Date -
Feb 13, 2014
app pub date -
Aug 8, 2013
filing date -
Aug 8, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A self-cleaning milk frothing device has a frothing mechanism, a milk-suction conduit and a milk-discharge conduit to discharge the rest milk. The frothing mechanism has a steam conduit to generate negative pressure inside. The milk-suction conduit includes a first flexible tube inserted into the milk, a second flexible tube connected to the frothing mechanism and a three-way pipe connected to the first flexible tube and the second flexible tube. An electromagnetic valve to control one end of the three-way pipe to connect to or separate from the air, and a controller to control the on-off of the electromagnetic valve is further disposed. After frothing the milk, the controller controls the electromagnetic valve, connecting the three-way pipe to the air, the suction air is passing through the second flexible tube and the frothing mechanism and then going out of the milk-discharge conduit.
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