发明申请
- 专利标题： CONTROLLING A LIQUID FLOW THROUGH HEATER
- 专利标题（中）： 通过加热器控制液体流
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申请号： PCT/IB2008/050479申请日： 2008-02-11
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公开(公告)号： WO2008099322A2公开(公告)日： 2008-08-21
- 发明人: MULDER, Bernardo, A.
- 申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MULDER, Bernardo, A.
- 申请人地址： Groenewoudseweg 1 NL-5621 BA Eindhoven NL
- 专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.,MULDER, Bernardo, A.
- 当前专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.,MULDER, Bernardo, A.
- 当前专利权人地址： Groenewoudseweg 1 NL-5621 BA Eindhoven NL
- 代理机构： UITTENBOGAARD, Frank et al.
- 优先权： EP07102580.3 20070216
摘要：
A liquid flow through heater for heating a liquid (10) comprises a channel (4) and an electric heater element (50) for heating at least a portion of the channel (4). A temperature sense unit (6, 60) senses a temperature (ST1; ST1, ST2) indicative of the temperature of the liquid. A flow control means (3) controls a flow of the liquid (10) through the channel (4). A controller (7) controls in a first phase (PH1), (i)the electric heater element (50) to pre-heat at least the portion of the channel (4), and (ii) the flow control means (3) to obtain a rate of flow ofthe liquid (10 through the channel (4) which is zero or relatively small withrespect to a rate of flowduring a second and/or third phase. The controller (7) controls in thesecond phase (PH2) succeeding the first phase (PH1), (i) the electric heater element (50) to supplya predetermined heating power independent on the sensed temperature (ST1; ST1, ST2),and (ii) the flow control means (3) to obtain a flow of the liquid (10) through the channel (4), and in thethird phase (PH3) succeeding the second phase (PH2), (i) the electric heater element (50) to supply a heating power (HP) in dependence on the sensed temperature (ST1; ST1, ST2) to substantially stabilize the sensed temperature (ST1; ST1, ST2) on a desired target value (TV), and (ii) the flow control means (3) to obtain a flow of the liquid (10) through the channel (4).
