In the prior art, Chinese patent CN0050055 discloses a kind of electromagnetic water heater, belongs to electric heater unit, packet
Include closed shell, iron core and electromagnetism winding.Shell has annular cavity and has inlet/outlet;Iron core is ring-shaped core, iron
The heart is mounted in housing cavity;Conducting ring is cased on iron core, the geometric dimension of conducting ring outer ring is less than the geometric dimension of housing cavity;Electricity
Magnetic winding passes around outside shell.The magnetic flux winding that electromagnetism winding generates passes around outside shell.The magnetic flux that electromagnetism winding generates is being led
Electric ring generates secondary current and generates vortex in iron core and heats jointly to water.Due to whole outer surfaces of iron core and conducting ring
It can be surrounded by water, thus thermal loss is few.
Chinese patent application 201510457013.6 discloses a kind of electromagnetic heater, includes pedestal, support frame, heating
Bar;Electromagnetic generator is provided in the middle part of pedestal;Support can be rotatably set in the side of pedestal;Support frame is L-shaped;Support
One end of frame can be arranged on the support with rotating horizontally, and the other end is provided with heating pole;Heating pole is arranged perpendicular to pedestal;Heating
Bar can move up and down along support frame;Heating pole is made of metal material.
Chinese patent application 201210571033.2 discloses a kind of high-efficiency electromagnetic heating tube, successively by outer layer to internal layer
Are as follows: line of induction ring layer, thermal insulation layer, heater layer, heated material, which are set, stays layer, intermediate heater layer, internal layer substance to set and stay layer;In
Between heater layer be feeromagnetic metal pipe;A netted heat carrier built in intermediate heater layer;Heated material, which is set, stays layer that a net is arranged
Shape heat carrier.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of the utility model is to provide a kind of electromagnetic heating type water heater, prevent
Leakage risk, heating efficiency are high;The number of copper wire is suitable in coil, keeps coil thickness moderate, good heat dissipation effect not will cause
Heat is on fire;Meanwhile make coil axial length be suitable for, then the length of heat generating device be also suitable for take up space it is small.
To achieve the goals above, the utility model provides a kind of electromagnetic heating type water heater, comprising: heating device,
Including the inner tube being made of an electrically conducting material, the outer tube being made of insulating material and coil;
Inner tube is hollow cylindrical shape;
Outer tube is hollow cylindrical shape, is set in except inner tube, and inner and outer pipes gap is equipped between outer tube and inner tube;
Coil is wound in the outer surface of outer tube;Coil includes 350-450 root copper wire, and the outer surface of every copper wire is equipped with
Insulating layer;Insulation sleeve is cased on the outer surface of coil.
Compared with prior art, electromagnetic heating type water heater provided by the utility model is realized by the way of electromagnetic heating
It is water, electrically separated, prevent leakage risk, improves heating efficiency;By being arranged the number of copper wire in coil in suitable model
It encloses, keeps coil thickness moderate, it is on fire not will cause overheat for good heat dissipation effect;Meanwhile the axial length of coil being made to be suitable for then sending out
The length of thermal be also suitable for take up space it is small.
According to another specific embodiment of the utility model, the tail end of inner tube is provided with several inlet through hole, several
The setting of inlet through hole even circumferential;The number of inlet through hole is greater than or equal to 4.
In the utility model, by inner tube tail end be arranged even number inlet through hole, convenient for hot water from inner and outer pipes gap into
Enter internal tube channel, cold water can be effectively prevent to enter internal tube channel.
According to another specific embodiment of the utility model, power 5-6kW;Inductance is 30-42 μ H;The circle of coil
Number is 42-68 circle;The cross-sectional area of copper wire is 2.5-4mm2。
According to another specific embodiment of the utility model, electromagnetic heating type water heater further comprises cold-hot water separating dress
Set, cold-hot water separating device is set to the head end of heating device comprising inner cavity chamber and exocoel, exocoel be placed on inner cavity chamber it
Outside;Exocoel open at one end is simultaneously connected with inner and outer pipes gap, the other end closing of exocoel, sets in the cavity wall of exocoel
There is cold water inlet;One end of inner cavity chamber's both ends open, inner cavity chamber is connected with inner tube, and the other end of exocoel goes out equipped with hot water
The mouth of a river.
In the utility model, cold water inlet and hot water outlet are all set in the cold and hot moisture positioned at heating device head end
From on device, easy constant temperature is grown in water route, and the thermal efficiency is high;Moreover, cold-hot water separating device efficiently separates hot and cold water, make to go out from hot water
The case where water of mouth of a river outflow is the hot water after heating, not will cause hot and cold water doping.
According to another specific embodiment of the utility model, it is equipped between head end between the head end of coil and the head end of outer tube
Away from equipped with tail end spacing between the tail end of coil and the tail end of outer tube, head end spacing and the range of tail end spacing are 1.5cm-
3cm。
In the utility model, by the way that the spacing of 1.5cm-3cm is arranged between overhang and the end of glass tube,
Heat transfer buffer band is formed by the spacing, can effectively prevent that the plastic parts overheating deforming at glass tube both ends is arranged in.
According to another specific embodiment of the utility model, power 8-10kW;Inductance is 38-45 μ H;Coil
The number of turns is 50-70 circle;The cross-sectional area of copper wire is 5-10mm2。
According to another specific embodiment of the utility model, outer tube is made of glass, outer tube with a thickness of 3mm-6mm.
In the utility model, 3mm-6mm is set by the thickness of glass tube, the hardness of glass tube is high, heat transfer and heat dissipation effect
Fruit is good.
According to another specific embodiment of the utility model, inner and outer pipes gap is 2-10mm.
According to another specific embodiment of the utility model, electromagnetic heating type water heater further comprises circuit board, circuit board
It is electrically connected with coil.
According to another specific embodiment of the utility model, electromagnetic heating type water heater further comprises for absorbing circuit plate
The water-cooling heat radiating device of the heat of generation, water-cooling heat radiating device include water cooling tube, and water cooling tube is set on circuit board.
Compared with prior art, the utility model has following the utility model has the advantages that by the way of electromagnetic heating, realizes
It is water, electrically separated, prevent leakage risk, improves heating efficiency;By being arranged the number of copper wire in coil in optimum range,
Keep coil thickness moderate, it is on fire not will cause overheat for good heat dissipation effect;Meanwhile the axial length of coil being made to be suitable for that then generate heat dress
The length set also be suitable for take up space it is small;By the way that even number inlet through hole is arranged in inner tube tail end, convenient for hot water between inner and outer pipes
Gap enters internal tube channel, and cold water can be effectively prevent to enter internal tube channel;Cold water inlet and hot water outlet are equal
It is set on the cold-hot water separating device of heating device head end, the long easy constant temperature in water route, and the thermal efficiency is high;Moreover, hot and cold water
Separator efficiently separates hot and cold water, and making the water flowed out from hot water outlet is the hot water after heating, not will cause hot and cold water
The case where doping;3mm-6mm is set by the thickness of glass tube, the hardness of glass tube is high, heat transfer and good heat dissipation effect;Pass through
The spacing of 1.5cm-3cm is set between overhang and the end of glass tube, heat transfer buffer band, energy are formed by the spacing
It enough effectively prevent that the plastic parts overheating deforming at glass tube both ends is arranged in.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
It is the structural schematic diagram of electromagnetic heating type water heater provided in this embodiment referring to Fig. 1.The electromagnetic heating type water heater packet
It includes: heating device 1, cold-hot water separating device 2, circuit board 3 and water-cooling heat radiating device 4.
Wherein: heating device, including the inner tube 11 being made of an electrically conducting material, the outer tube 12, the coil that are made of insulating material
13 and upper cover 14.
Inner tube 11 is hollow cylindrical shape, and the tail end of inner tube 11 is provided with several inlet through hole 111, several water inlets are logical
The setting of 111 even circumferential of hole;The number of inlet through hole 111 is greater than or equal to 4, it is preferred that the number of inlet opening is even number;
Outer tube 12 be hollow cylindrical shape, outer tube 12 be glass tube, outer tube 12 with a thickness of 3mm-6mm.In it is set in
Except pipe 11;Inner and outer pipes gap is equipped between outer tube 12 and inner tube 11, inner and outer pipes gap is 2-10mm.
Coil 13 is wound in the outer surface of outer tube 12, and coil 13 includes 350-450 root copper wire, the outer surface of every copper wire
It is equipped with insulating layer;Insulation sleeve is cased on the outer surface of coil 13;Head is equipped between the head end of coil 13 and the head end of outer tube 12
Spacing is held, tail end spacing is equipped between the tail end of coil 13 and the tail end of outer tube 12, head end spacing and the range of tail end spacing are equal
For 1.5cm-3cm.
Power is 5-6kW;Inductance is 30-42 μ H;The number of turns of coil is 42-68 circle;The cross-sectional area of copper wire is
2.5-4mm2。
Power is 8-10kW;Inductance is 38-45 μ H;The number of turns of coil is 50-70 circle;The cross-sectional area of copper wire is
5-10mm2。
Upper cover 14 is set to the tail end of outer tube 12 and inner tube 11.
Cold-hot water separating device 2 is set to the head end of heating device comprising inner cavity chamber and exocoel, exocoel are placed on interior
Except chamber;Exocoel open at one end is simultaneously connected with 12 gap of inner and outer pipes, the other end closing of exocoel, exocoel
Cavity wall is equipped with cold water inlet 21;One end of inner cavity chamber's both ends open, inner cavity chamber is connected with inner tube 11, exocoel it is another
End is equipped with hot water outlet 22.
In the present embodiment, cold water is entered by cold water inlet 21, sequentially passes through exocoel and inner and outer pipes gap, from inner tube 11
The inlet through hole 111 on top enters 11 inner passage of inner tube, flows through inner cavity chamber, is flowed out by hot water outlet 22.
Circuit board 3 and coil 13 are electrically connected.
Water-cooling heat radiating device 4 is used for the heat that absorbing circuit plate generates, and water-cooling heat radiating device includes water cooling tube 41, water cooling tube
41 are set on circuit board 3.
Although the utility model is disclosed above in the preferred embodiment, it is not intended to limit the utility model the model of implementation
It encloses.Any those skilled in the art improve in the invention scope for not departing from the utility model when can make a little,
I.e. all same improvement done according to the utility model, should be the scope of the utility model and are covered.