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US 5,074,998 AGranted
Apparatus for treating liquid to prevent and/or remove scale deposits
OwnerJan P. De Baat Doelmaninventor
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OwnerJan P. De Baat Doelmaninventor
Estimating the term…
Apparatus for treating liquid to prevent and/or remove scale deposits, made up of at least one solenoid-type electrical coil (5) for generating a magnetic field for acting on the liquid to be treated and an electrical energizing unit (2) having at least one signal output (3, 4) for connecting the ends of the at least one coil (5). The energizing unit (2) is provided with means for generating an energizing signal to be varied in frequency. The at least one coil (5) can also be sited alongside a pipe (1) instead of around a pipe (1), if necessary together with the energizing unit (2) in one and the same housing. To vary the magnetic field generated as a function of the flow rate of the liquid to be treated, the energizing unit is provided with a control input (6, 7) for connecting a flow rate transducer (8).
An apparatus for treating liquid to prevent and/or remove scale deposits, comprising at least one solenoid-type electrical coil for generating a magnetic field for acting on the liquid to be treated, said at least one coil having connecting ends to energize the same with an electrical energizing signal, and an electrical energizing unit having at least one signal output connected to the ends of said at least one coil, said energizing unit having generating means for generating a continuously frequency varied energizing signal independently of the flow rate of the liquid to be treated.
An apparatus for treating liquid to prevent and/or remove scale deposits, comprising at least one solenoid-type electrical coil for generating a magnetic field for acting on the liquid to be treated, said at least one coil having connecting ends to energize the same with an electrical energizing signal, and an electrical energizing unit having at least one signal output connected to the ends of said at least one coil, said energizing unit being provided with frequency control input means for generating an energizing signal to be varied in frequency, wherein at least one transducer means for generating a control signal dependent on the flow rate to be treated is connected to said frequency control input means to vary the frequency of the energizing signal in dependence with the flow rate of said liquid.
An apparatus for treating liquid in a pipe to prevent and/or remove scale deposits, comprising a housing, at least one solenoid-type electrical coil for generating a magnetic field for acting on the liquid to be treated, said at least one coil having connecting ends to energize the same with an electrical energizing signal, and an electrical energizing unit having at least one signal output connected to the ends of said at least one coil, wherein said at least one coil and said energizing unit are disposed in the housing, said housing having means for fixing said housing alongside said pipe said fixing means being configured so that said coil extends parallel to said pipe and does not encompass said pipe.
Dependencies are inferred from the claim text.