US 6,674,055 B2Granted

Electromagnetic water heater

OwnerShou Jun Zhang, Zheng Qing Yang +1inventors

InventorsShou Jun Zhang, Zheng Qing Yang, Qiang Hua Zhao

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Abstract

A method of heating water comprises providing a helical passageway in juxtaposition a metal core rod and a coil through which an alternating current is passed. The alternating current generates an alternating longitudinal magnetic field that passes through the metal core rod and gives rise to eddy currents that generate heat. Water flowing along a helical passageway is heated and at the same time the water is magnetized as it cuts across lines of magnetic force of the alternating longitudinal magnetic field. A magnetized water generator for uses with the method comprises two bulkheads, a coil, a metal core rod and an outer tube. The core rod is disposed within the outer tube to create a helical passageway. The outer tube and core rod are disposed within the coil. A bulkhead is disposed on each end of the outer tube. Water enters the helical passageway through the water inlet in one end bulkhead and out of the helical passageway via a water outlet on the other end bulkhead.

Claims6

Dependent claims

An electromagnetic water heater comprising:

an outer cover,
a water tank within the cover for receiving and storing a quantity of heated water,
a heating element having an inlet and an outlet connected with the water tank,
a first valve for allowing a flow of cold water to the inlet of the heating element,
a water pump having an inlet connected with the water tank and an outlet,
a second valve connected to the water pump outlet for allowing a flow of water from the water tank to the heating element inlet, and
a controller for selectively opening the first or second valves to provide and maintain a quantity of heated water in the water tank, wherein the heating element further comprises:
an electric coil,
an outer tube disposed within the coil,
a metal core rod disposed within the outer tube,
two end bulkheads, one at each end of the outer tube, and
a water inlet in one end bulkhead and a water outlet on the other end bulkhead, wherein the metal core rod has a screw-shaped through-flute in its surface and two holes separately on its two ends to connect the screw-shaped through-flute with the water inlet and the water outlet, the screw-shaped through-flute creating a helical passage between the metal core rod and the outer tube between the water inlet and water outlet.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/001,284Filed 31 Oct 2001
Priority: CN 00240132 U1 Nov 2000
Published: US 2003/0080115 A11 May 2003
Granted: 6 Jan 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

C02F 1/485
Using electromagnets: located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable
H05B 6/108
Using a susceptor: for heating a fluid
C02F 2201/483
Devices for applying magnetic or electric fields: using coils
C02F 2209/42
Controlling or monitoring parameters in water treatment: liquid level