CN103148572B - Electromagnetic induction-type quick water heating device - Google Patents

Abstract

A kind of electromagnetic induction-type quick water heating device, relates to a kind of electrical equipment.This water-heating device center arranges heater charge bar, heater charge bar center arranges thermal cut-out protector installing hole, in thermal cut-out protector installing hole, thermal cut-out protector is installed, the lead-out wire of thermal cut-out protector is drawn by thermal cut-out protector installing hole, and with sealing gasket, thermal cut-out protector installing hole is sealed, heater charge bar arranges helicla flute, the helical support member that the thin rod of high-temperature insulation material is made is inlaid with in helicla flute, above assembly is placed in tubular insulator, heater charge bar, the gap between screw formed between tubular insulator and helical support member becomes water channel.The present invention has safe, efficient, energy-conservation, that protective device is more sensitive and accurate advantage; the direct or indirect induction electrical leakage problems of present various electric heater can be solved well; and in heating process, there is good magnetization to water, the magnetized drinking water of high-quality can be made.

Description

Electromagnetic induction-type quick water heating device

Technical field

The present invention relates to a kind of electrical equipment.

Background technology

The existing electric heater for shower divides three kinds substantially to the mode of heating of water, 1, utilize water resistance directly to water power up produce heat mode water is directly heated; 2, to resistive heat generating body power up produce heat by insulating barrier heat conduction to water indirect, 3, utilize electromagnetic induction principle make one magnetic conductor heating, water is by being heated with the direct heat exchange of heater.Although power up directly higher to the mode efficiency of water heating to water resistance, but different water quality heating effect is different and be not easy to control, easily electric leakage is produced when water quality is bad, hydrolysis can be had to cause danger to water during energising, so it is dangerous to water heating to utilize water resistance directly water to be powered up to the mode producing heat; Generation heat is powered up to resistive heat generating body relatively safe to the mode of water indirect by insulating barrier heat conduction, but its security and the efficiency of heating surface are conflicts, should thick dielectric layer being added for pursuing safety, needing thinning insulating barrier, security and the more difficult unification of the efficiency of heating surface for raising the efficiency.

Electromagnetic induction principle is utilized to make a magnetic conductor heating, water by the direct heat exchange with heater by the mode heated, water has thicker insulator to isolate with the electromagnetic induction coil being added with electricity, thickness and the efficiency of heating surface relevance of insulator are little, although security and efficiency all improve than being easier to, but still there is a lot of problem, such as: because the problem electromagnetic induction coil of structure badly can cause coil burnout because dispelling the heat during work, and between electromagnetic induction coil and water, have parasitic capacitance to exist, the high frequency alternating current that electromagnetic induction coil adds can make water-band electricity by this parasitic capacitance, these all can have influence on to water heating efficiency and security.Above subproblem has been solved in ZL201010260385.7 patent of invention; but the thermal cut-out protector because of anti-dry is arranged on the outside of whole heater, thus exist anti-dry protection insensitive, repeatedly after dry combustion method because heater heat production speed can produce the problems such as destruction to tubular insulator very soon.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and there is better security, more sensitive and accurate dry combustion method protection, higher efficiency, the electromagnetic induction-type quick water heating device of more reasonable structure.

The present invention is primarily of heater charge bar, Inlet and outlet water joint, reducing crossover sub, electromagnetic shielding decorative layer, external insulation layer, helical support member, Isolated Shield layer, tubular insulator is protruding, induction coil, thermal cut-out protector, tubular insulator forms, solving the technical scheme that its technical problem adopts is: arrange heater charge bar at water-heating device center, heater charge bar center arranges thermal cut-out protector installing hole, in thermal cut-out protector installing hole, thermal cut-out protector is installed, the lead-out wire of thermal cut-out protector is drawn by thermal cut-out protector installing hole, and with sealing gasket, thermal cut-out protector installing hole is sealed, heater charge bar arranges helicla flute, the helical support member that the thin rod of high-temperature insulation material is made is inlaid with in helicla flute, the material preferably polytetrafluoroethylene of helical support member, helical support member cross section is circular configuration, above assembly is placed in tubular insulator, heater charge bar, the gap between screw formed between tubular insulator and helical support member becomes water channel, above tubular insulator, O-ring seals is set, bottom tubular insulator, is provided with projection, be wound around with litz wire outside tubular insulator and form induction coil, between induction coil and tubular insulator, be wound around one deck Copper Foil as Isolated Shield layer.Inside and outside inner insulating layer and the external insulation layer being all provided with high dielectric strength of induction coil, is wound around one deck electromagnetic shielding decorative layer outside external insulation layer.

Design of the present invention has safe, efficient, energy-conservation advantage, due to by built-in for anti-dry thermal cut-out protector, makes protective device more sensitive and accurate; And between heater and tubular insulator, be provided with the helical support member be made up of the thin rod of high-temperature insulation material, may to the infringement of tubular insulator when reducing heater dry combustion method, make security higher, the direct or indirect induction electrical leakage problems of present various electric heater can be solved well, and in heating process, there is good magnetization to water, the magnetized drinking water of high-quality can be made.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described:

Fig. 1 is structure chart of the present invention;

In figure: 1 water inlet connection, 2 reducing crossover subs, 3 helicla flutes, 4 helical support member cross sections, 5 thermal cut-out protector installing holes, 6 thermal cut-out protectors, 7 helical support member, 8 electromagnetic shielding decorative layers, 9 inner insulating layers, 10 Isolated Shield layers, 11 water outlet joint, 12 lead-out wires, 13 sealing gaskets, 14O RunddichtringO, 15 tubular insulators, 16 heater charge bars, 17 induction coils, 18 external insulation layers, 19 tubular insulator projections.

Detailed description of the invention

As shown in FIG.: at water-heating device center, heater charge bar 16 is set, heater charge bar 16 first half centre drill one blind hole, the bottom of blind hole is bored one along radial direction and is connected the aperture of blind hole and milling one chain-wales, form thermal cut-out protector installing hole 5, in thermal cut-out protector installing hole 5, thermal cut-out protector 6 is installed, the lead-out wire 12 of thermal cut-out protector 6 is drawn by thermal cut-out protector installing hole 5, and with sealing gasket 13, thermal cut-out protector installing hole 5 is sealed, heater charge bar 16 produces the same helicla flute 3 of a similar leading screw with revolving mill-turn, pitch outline is larger, pass through in order to water, the helical support member 7 that the thin rod of high-temperature insulation material is made is inlaid with in helicla flute 3, the material preferably polytetrafluoroethylene of helical support member 7, helical support member cross section 4 is circular configuration, above assembly is placed in tubular insulator 15, heater charge bar 16, the gap between screw formed between tubular insulator 15 and helical support member 4 becomes water channel, make rotational flow in the spiral channel of water between tubular insulator 15 and heater charge bar 16, the heat that abundant absorption heater charge bar 16 produces, tubular insulator 15 and reducing crossover sub 2 junction arrange O-ring seals 14, for enabling water flow through heater smoothly, bottom tubular insulator 15, being provided with projection 19, supporting heater charge bar 16, prevent its decline from blocking outlet, be wound around with litz wire outside tubular insulator 15 and form induction coil 17, to be that the thinner enamel covered wire of multiply is stranded form litz wire, tubular insulator 15 is also not beneficial too thick, general in 2 millimeter, the heat overwhelming majority that such induction coil 17 produces can be only absorbed by the water by conduction pattern by the water of flowing in tubular insulator 15, induction coil 17 can be made to work long hours and can not enter high temperature, also the efficiency of heater is further increased, although induction coil 17 can not produce direct electrical contact in water because of the existence of tubular insulator 15, but there is parasitic capacitance to exist between induction coil 17 and water, because induction coil 17 is larger with the relative area of water, so the value of this parasitic capacitance is also larger, and for making electromagnetic induction heater volume little so induction coil 17 will apply high frequency alternating current, this high frequency alternating current can form higher Leakage Current by the parasitic capacitance between induction coil 17 and water to water, have impact on the security feature of electromagnetic induction heater, design of the present invention will focus on the electrical quantity performance of material on the one hand when selecting the material of tubular insulator for this reason, reduce parasitic capacitance, one deck Copper Foil is wound around as Isolated Shield layer 10 on the other hand between induction coil 17 and tubular insulator 15, to eliminate the Leakage Current of parasitic capacitance between induction coil and water, as long as this ground connection Isolated Shield layer 10 is connected on a constant current potential, the present invention is connected in rectifier negative line, inside and outside inner insulating layer 9 and the external insulation layer 18 being all provided with high dielectric strength of induction coil 17, is wound around one deck electromagnetic shielding decorative layer 8 outside external insulation layer 18.The structure of water inlet connection 1, reducing crossover sub 2, electromagnetic shielding decorative layer 8, inner insulating layer 9, Isolated Shield layer 10, water outlet joint 11, O RunddichtringO 14, tubular insulator 15, induction coil 17, external insulation layer 18, tubular insulator projection 19 is same as the prior art.

Claims (1)

1. an electromagnetic induction-type quick water heating device, by heater charge bar, Inlet and outlet water joint, reducing crossover sub, electromagnetic shielding decorative layer, external insulation layer, helical support member, Isolated Shield layer, tubular insulator is protruding, induction coil, thermal cut-out protector, tubular insulator forms, it is characterized in that water-heating device center arranges heater charge bar, heater charge bar center arranges thermal cut-out protector installing hole, in thermal cut-out protector installing hole, thermal cut-out protector is installed, the lead-out wire of thermal cut-out protector is drawn by thermal cut-out protector installing hole, and with sealing gasket, thermal cut-out protector installing hole is sealed, heater charge bar arranges helicla flute, the helical support member that the thin rod of high-temperature insulation material is made is inlaid with in helicla flute, the material of helical support member is polytetrafluoroethylene (PTFE), helical support member cross section is circular configuration, be placed in tubular insulator by above assembly, the gap between screw formed between heater charge bar, tubular insulator and helical support member becomes water channel, above tubular insulator, O-ring seals is set, bottom tubular insulator, is provided with projection, be wound around with litz wire outside tubular insulator and form induction coil, between induction coil and tubular insulator, be wound around one deck Copper Foil as Isolated Shield layer, inside and outside inner insulating layer and the external insulation layer being all provided with high dielectric strength of induction coil, is wound around one deck electromagnetic shielding decorative layer outside external insulation layer.