公开(公告)号：EP1110430A4

公开(公告)日：2008-01-16

申请号：EP99945178

申请日：1999-08-24

申请人： NESTLE SA

发明人： HERRICK JAMES P ,  SASTRY SUDHIR ,  CLYDE GENE F ,  WEDRAL ELAINE R

IPC分类号： H05B3/00 ,  F24H1/10 ,  H05B3/03 ,  H05B3/60

CPC分类号： H05B3/60 ,  H05B2203/021

摘要： A liquid heater (101) includes at least a pair of electrodes (103, 109) each of which having an electrically conducting surface (105, 111) and being spaced apart from each other. The liquid heater (101) also includes a first heating passage (107) defined, at least in part, by the electrically conducting surfaces (105, 111) of the electrodes (103, 109). Electrical power to the liquid heater (101) is provided by an electrical power supplier (17) configured to draw an alternating electrical current having a frequency less than or substantially equal to 60 Hz and supply an alternating electrical voltage having a frequency substantially equal to or higher than 50Hz across the electrodes (103, 109). The electrodes (103, 109) are arranged to make electrical contacts with liquid received into the heating passage (107). The liquid in the heating passage (107) generates heat when an electric current flows through the liquid and between the electrodes (103, 109).