Invention Grant
- Patent Title: Prevention or reduction of scaling on a heater element of a water heater
- Patent Title (中): 防止或减少热水器加热元件上的结垢
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Application No.: US13700757Application Date: 2011-07-13
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Publication No.: US09347684B2Publication Date: 2016-05-24
- Inventor: Ytsen Wielstra
- Applicant: Ytsen Wielstra
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP10170384 20100722
- International Application: PCT/IB2011/053133 WO 20110713
- International Announcement: WO2012/011026 WO 20120126
- Main IPC: H05B1/02
- IPC: H05B1/02 ; F24H9/20 ; F22B1/30 ; F24D19/00 ; F24H9/00
Abstract:
The invention provides a method of using a water heater arranged for heating an aqueous liquid wherein the water heater comprises a heating element to heat aqueous liquid in the water heater. The method comprising (a) heating aqueous liquid in the water heater with the heating element, wherein the heating element is in contact with the aqueous liquid; and (b) applying a first AC voltage between the heating element and a counter electrode and applying a second AC voltage between the heating element and the counter electrode, wherein the second AC voltage has a second AC frequency selected from the range of 0.02 Hz-5 Hz and wherein the ratio between the first AC frequency and the second AC frequency is 2 or more.
Public/Granted literature
- US20130089310A1 PREVENTION OR REDUCTION OF SCALING ON A HEATER ELEMENT OF A WATER HEATER Public/Granted day:2013-04-11
Information query
