CN109631315A - A kind of electromagnetic heater and a kind of instant heating type electromagnet water heater - Google Patents
A kind of electromagnetic heater and a kind of instant heating type electromagnet water heater Download PDFInfo
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- CN109631315A CN109631315A CN201811563408.4A CN201811563408A CN109631315A CN 109631315 A CN109631315 A CN 109631315A CN 201811563408 A CN201811563408 A CN 201811563408A CN 109631315 A CN109631315 A CN 109631315A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 225
- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 84
- 229910052751 metal Inorganic materials 0.000 claims abstract description 84
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 230000005674 electromagnetic induction Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 2
- 230000003685 thermal hair damage Effects 0.000 abstract description 2
- 210000002445 nipple Anatomy 0.000 description 25
- 230000009467 reduction Effects 0.000 description 25
- 230000017525 heat dissipation Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 239000008236 heating water Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002510 pyrogen Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/08—Induction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Induction Heating (AREA)
Abstract
The present invention relates to continuous flow heater technical fields, disclose a kind of electromagnetic heater and a kind of instant heating type electromagnet water heater, wherein electromagnetic heater includes metal shell, electromagnetic coil, form the shell of accommodating chamber, metal shell is at least partially arranged in the accommodating chamber of shell, part of the metal shell in accommodating chamber is surrounded by separation sleeve, electromagnetic coil is arranged in accommodating chamber outside separation sleeve, space in accommodating chamber outside separation sleeve is packaged with insulating heat-conductive liquid, metal shell is equipped with inlet and outlet, the inlet and outlet of metal shell seal be connected to outside shell respectively.The present invention is heated using electromagnetic coil, and most of electronic component is immersed in insulating heat-conductive liquid, heat conduction is carried out using insulating heat-conductive liquid, to realize that water power is isolated, the purpose of insulating radiation avoids electronic component short circuit or crosses cause thermal damage, it is ensured that heating device operates normally, safety coefficient is high, long service life.
Description
Technical field
The present invention relates to continuous flow heater technical fields, more particularly to a kind of electromagnetic heater and one kind
Instant heating type electromagnet water heater.
Background technique
There are many small kitchen treasured products, such as instant electric tap, small-sized instant electric water heater etc. currently on the market.
These small kitchen treasured products are quickly to heat the water flowed through in pipeline, the temperature for making water temperature rise rapidly to that user is allowed to be comfortable on
Degree.In cold winter, these small kitchen treasured products bring many conveniences to user, can use comfortable warm water or heat at any time
Washing hand washes the dishes, wash vegetables etc..But existing most of small kitchen treasured products are all that heat-generating pipe or heating film are immersed in water
In heated, after a period of use, heat-generating pipe perhaps heat film surface be easy to generate scale cause heat-generating pipe or
The heat of heating film is difficult to transmit water supply, on the one hand reduces heating efficiency, slows down heating speed, on the other hand be easy to cause fever
Pipe or heating film overheat, generate booster phenomenon, cause electric leakage safety accident.There are heat-generating pipe or heating film to be easy to be corroded again
Damage is easy to generate leaky in this way, and there are security risks.
Some designers develop electromagnet water heater, such as a kind of entitled instant heating type electromagnet water heater, application number thus
A kind of electromagnet water heater scheme is disclosed for 201510863465.4 Chinese invention patent, the program is added using electromagnetic induction
Pyrogen reason, realizes the purpose of electricity separation.But electromagnetic coil has larger current when being powered on and passes through, meeting in this way
Electromagnetic coil itself is set to generate certain heat, the electromagnetic coil in the program is arranged in water heater liner, is difficult in this way
It is preferably radiated to electromagnetic coil, after long-time use, electromagnetic coil is easily damaged.In addition, the small kitchen of the similar program
The control circuit board of precious product is generally all mounted in common shell, although some products are using air-cooled form to control electricity
Road plate is cooled down, but such small kitchen treasured product is typically mounted in toilet or near the tap in kitchen, these ground
Square environment is moister, it is easy to cause other electric elements in control circuit board and its electric elements or shell above
Short circuit phenomenon occurs, to influence the normal use of product, and there are some potential safety problemss.
Summary of the invention
The present invention is to overcome the deficiencies in the prior art described above, and provides a kind of electromagnetic heater and a kind of instant heating type electricity
Magnetic water heater.
The present invention is achieved through the following technical solutions above-mentioned purpose.
A kind of electromagnetic heater, including that can be generated heat by electromagnetic induction for water storage or the metal-back flowed through that supplies water
The electromagnetic coil that body, electromagnetic induction metal shell generate heat, further includes the shell to form closed accommodating chamber, metal shell above-mentioned
At least electromagnetic induction heating part be arranged in the accommodating chamber of shell, metal shell in the accommodating chamber of shell part sealing
Formula is surrounded by separation sleeve, and electromagnetic coil above-mentioned is arranged in the accommodating chamber of shell outside separation sleeve, isolation in the accommodating chamber of shell
Space outside set is packaged with insulating heat-conductive liquid, and metal shell is equipped with inlet and outlet, the water inlet of metal shell and water outlet
Sealing is connected to outside shell mouth respectively.
The water inlet of metal shell in this programme is used to be connected to water source, such as is connected to tap water pipe line.Metal-back
The water outlet of body is used to be connected to user with water terminal, such as is connected to tap, shower etc..Metal shell in this programme
Inner cavity formed for water storage or the water cavity that flows through of supplying water, heat dissipation cavity is formed between separation sleeve and shell, heat dissipation cavity is provided with
Insulating heat-conductive liquid.Water cavity and heat dissipation cavity are mutually indepedent, are not connected to mutually, realize electricity separation, can reduce or even avoid metal-back
Heat conduction between body and water and insulating heat-conductive liquid by heating.Electromagnetic coil in this programme is to be immersed in insulating heat-conductive
In liquid, the heat that itself is generated when electromagnetic coil is powered on can rapidly be conducted to insulating heat-conductive liquid, under normal conditions
Partial heat itself can be absorbed in insulating heat-conductive liquid, but also heat can be conducted to shell, and shell is radiating heat into
In ambient enviroment, to realize the purpose to radiate to electromagnetic coil, electromagnetic coil is avoided to be easily damaged.
The lead of electromagnetic coil in this programme can be using the sealing elements hermetically passing shells such as rubber sleeve, silica gel sheath, benefit
It come hermetically passing lead is technological means common in the art with these sealing elements.It can make the electromagnetism in this programme in this way
Coil is connected with external control circuit, thus using the work of external control circuit control electromagnetic coil, and outside control is electric
Road is arranged in the place of relatively dry, avoids external control circuit that short circuit phenomenon occurs, improves the stability and safety of product.
The electromagnetic heater of this programme can be used in immediately heating water heater, can also be used in storage-type electric water heater, heating power
It can be rationally designed according to form of water heater etc..Such as the metal shell in this programme can be using the metal flowed through that only supplies water
Pipe, is heated using electromagnetic coil to flowing water, and the water heating for flowing through metal tube quickly, can be used directly, be suitable for
Immediately heating water heater.No doubt, it is connected to water tank or water storage cylinder in the water outlet of metal tube, has also may be constructed a kind of storage-type heat
Hydrophone.Metal shell in this programme can also utilize electromagnetic coil using the water tank or water storage cylinder that can store more water
It is heated to the water of storage, user reuses the hot water of storage, also may be constructed a kind of storage-type electric water heater in this way.Certainly,
The electromagnetic heater of this programme is not limited to be used in immediately heating water heater or storage-type electric water heater.
As improved structure type, there are insulation voids between above-mentioned metal shell and separation sleeve, metal shell
Water inlet is located in the accommodating chamber of above-mentioned shell, is equipped with the heat carrier with cavity in the accommodating chamber of shell, metal shell into
The mouth of a river is connected to the exit seal of the cavity of heat carrier, and the import sealing of the cavity of heat carrier is connected to outside shell, heat carrier leaching
Enter in the insulating heat-conductive liquid in the accommodating chamber of shell.The insulation voids shape between metal shell and separation sleeve in the structure type
At heat-insulation chamber, water cavity, heat-insulation chamber and heat dissipation cavity are mutually indepedent, are not connected to mutually, electricity separation are better achieved, and can be greatly
Reduce the heat conduction even avoided between metal shell and water and insulating heat-conductive liquid by heating.Leading in the structure type
The import of the cavity of hot body with external water source for being connected to, and the water into the cavity of heat carrier is generally cold water, and heat carrier soaks
Bubble is in insulating heat-conductive liquid, to conduct heat between cold water and insulating heat-conductive liquid using heat carrier.Generally, insulation is led
The temperature of hydrothermal solution is higher than the temperature of cold water, especially in cold winter, can both cool down to insulating heat-conductive liquid in this way, reinforce
To the heat dissipation effect of electromagnetic coil, and temperature of cold water rises can be given, play the role of preheating cold water.Heat carrier in the structure type
It is preferred that being made of the good metal material of heating conduction, such as copper alloy or aluminium alloy.
As improved structure type, above-mentioned heat carrier has heat transmission fin.Heat transmission fin can be arranged in heat carrier
Cavity in, the lateral surface of heat carrier can also be arranged in, can also in the cavity of heat carrier and the lateral surface of heat carrier all
It arranges heat transmission fin, to reinforce heat-conducting effect, improves heat-transfer rate.
The present invention also describes a kind of instant heating type electromagnet water heater, further includes control including above-mentioned electromagnetic heater
Circuit board and Hall water flow sensing unit, above-mentioned metal shell are metal tube, and two ports of metal tube are respectively above-mentioned gold
Belong to the inlet and outlet of shell, the import of the cavity of above-mentioned heat carrier and the water outlet of Hall water flow sensing unit seal and connect
It is logical, Hall water flow sensing unit and above-mentioned electromagnetic coil all circuit connections to control circuit board.
The above-mentioned electromagnetic heater that this programme is constituted using the metal tube flowed through that only supplies water, and combine control circuit board
Instant heating type electromagnet water heater is constituted with Hall water flow sensing unit etc..Hall water flow sensing unit is for detecting in water route whether have water flow
Pass through.When there is water flow to pass through, the transmission of Hall water flow sensing unit has water signal to control circuit board, and control circuit board controls electromagnetism
Coil working.When not having water flow to pass through, Hall water flow sensing unit sends no water signal to control circuit board, control circuit board control
Electromagnetic coil processed stops working.To realize the automatic heating of intelligence, greatly it is convenient for the user to use.
As improved structure type, above-mentioned control circuit board and Hall water flow sensing unit are all disposed within above-mentioned shell
Accommodating chamber in and all immerse in above-mentioned insulating heat-conductive liquid, the inlet seal of Hall water flow sensing unit is connected to shell
Outside.Currently, for can generally arrange more electronic component, example in the control circuit board of the electromagnetic coil of electromagnetic induction fever
Such as IGBT, rectifier bridge, power tube, high-voltage capacitance, conventional capacitive, resistance, choke coil, the fever of some of them electronic component
Also larger.Control circuit board and Hall water flow sensing unit are also immersed in insulating heat-conductive liquid by the structure type, can be saved in this way
Lead, and the lead between control circuit board, Hall water flow sensing unit and electromagnetic coil can hide the accommodating chamber for being contained in shell
It is interior, in order to avoid there is excessive lead exposed, keep electromagnet water heater more integrated, convenient for assembling and installation.And it can use absolutely
Cooling electronic component of the edge conductive fluid to control circuit board and its above.In addition, using insulating heat-conductive liquid by control circuit board
And its thoroughly isolation such as electronic component above and water, vapour, it avoids that short circuit phenomenon occurs, eliminates safe hidden trouble, it is ensured that electromagnetism
Water heater operates normally.
As improved structure type, above-mentioned Hall water flow sensing unit includes the cavity of straight-tube shape, Hall water flow sensing
The inlet and outlet of device are located at both ends of cavity and coaxially arranged, and inner impeller, inner impeller are rotatably connected in cavity
Center of rotation and Hall water flow sensing unit water inlet and water outlet it is coaxial, in inner impeller deviate center of rotation location arrangements
There is magnet, the Hall sensor for detecting magnet is disposed on the outside of cavity, hall sensor circuit is connected to the control
Circuit board.When having water flowing in the cavity of Hall water flow sensing unit, water flow just will drive inner impeller and rotate, and inner impeller
The water inlet and water outlet of center of rotation and Hall water flow sensing unit are coaxial, it can be ensured that inner impeller reaction is sensitiveer.Internal lobe
Magnet on wheel can be one, be also possible to multiple, it is preferable that deviate the location arrangements of center of rotation in inner impeller
Multiple magnet, and these magnet are evenly arranged around the center of rotation of inner impeller.More preferred scheme is around inner impeller
Center of rotation is arranged symmetrically two or four magnet, will not both increase when inner impeller starts turning because magnet is excessive in this way
Inertia force, and inner impeller can be made to obtain better dynamic balancing, keep inner impeller rotation more steady, to reduce the mill of inner impeller
Damage, prolongs the service life.
As improved structure type, it is rotatably connected to out rotor on the outside of the cavity of above-mentioned Hall water flow sensing unit,
The center of rotation of out rotor and the center of rotation of the inner impeller are coaxial, and magnet, the magnetic on out rotor are disposed on out rotor
Magnet on iron and inner impeller apart from it is nearest when be that homopolarity is opposite or heteropolar opposite, by between magnet when inner impeller rotates
Interaction drives out rotor rotation, and Hall sensor is used to detect the magnet on the magnet or out rotor in inner impeller.It should
Hall water flow sensing unit in structure type is immersed in insulating heat-conductive liquid, and out rotor is also immersed in insulating heat-conductive liquid.Internal lobe
Out rotor rotation is driven by the magnet principle that identical charges repel each other or there is a natural attraction between the sexes when wheel rotation, out rotor rotation can stir insulation
Conductive fluid flows insulating heat-conductive liquid in accommodating chamber, thus make insulating heat-conductive liquid conduction heat speed faster, can be more preferable
Ground passes through the effectively heat dissipation such as heat carrier, shell.
As improved structure type, above-mentioned separation sleeve is isolating cylinder, the sealed set of isolating cylinder in the outside of metal tube,
One end of isolating cylinder and above-mentioned shell are tightly connected, and the other end of isolating cylinder and above-mentioned heat carrier are tightly connected, above-mentioned
The water outlet end of metal tube exposes to shell.Isolating cylinder in the structure type can be integrated sealing with shell and connect,
It can be tightly connected by way of being threadedly engaged and compressing sealing ring.Metal tube need to be only inserted into isolating cylinder by the structure type
In, and the water inlet of metal tube is connected to the exit seal of the cavity of heat carrier, isolating cylinder and heat carrier are tightly connected, and
The water outlet end of metal tube is set to expose to shell, it is mutually indepedent thus to may be implemented water cavity, heat-insulation chamber and heat dissipation cavity, further
Simplify structure, convenient for assembling.Furthermore, it is possible to which the water outlet of metal tube is facilitated to connect with exterior line, metal tube can also be avoided
Water outlet end and insulating heat-conductive liquid contact, in order to avoid by heating water conduct heat in insulating heat-conductive liquid.
As improved structure type, the water outlet end of above-mentioned metal tube is equipped with for detecting water flow temperature in metal tube
Temperature sensor, temperature sensor circuit is connected to control circuit board.Utilize the water outlet of temperature sensor detection metal tube
The leaving water temperature of the water temperature at place, detection is more accurate.And the online value that leaving water temperature can be set in control circuit board, when
When the leaving water temperature of detection is higher than online value, electromagnetic coil is controlled by control circuit board and is stopped working, security protection is played
Effect.
As improved structure type, above-mentioned outer side of shell is connected with cap, is formed between shell and cap and accommodates pair
Chamber, the water outlet end and temperature sensor of above-mentioned metal tube are secondary intracavitary positioned at accommodating, and the water outlet of metal tube is connected to cap
The lead in outside, lead, control circuit board and external power supply connection between temperature sensor and control circuit board passes through
Silica gel sheath hermetically passing shell, and the position that lead passes through is accommodating in the corresponding region of secondary chamber.The structure type utilizes cap
The water outlet end of metal tube, temperature sensor, some leads, silica gel sheath and lead are surrounded across position with shell, it can
To play the role of protection, unexpected touch is avoided to damage.And it is relatively isolated temperature sensor and external environment, it avoids
It is a greater impact, the temperature value that temperature sensor detects is more accurate.
The present invention mainly had the following beneficial effects: heated using electromagnetic coil compared with prior art, and will be big
Part electronic component is immersed in insulating heat-conductive liquid, carries out heat conduction using insulating heat-conductive liquid, thus realize that water power is isolated,
The purpose of insulating radiation avoids electronic component short circuit or crosses cause thermal damage, it is ensured that and heating device operates normally, and safety coefficient is high,
Long service life.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the embodiment of the present invention one.
Fig. 2 is the partial enlarged view in Fig. 1 at K.
Fig. 3 is the schematic perspective view of the heat carrier in the embodiment of the present invention one.
Fig. 4 is the schematic diagram of the section structure of the embodiment of the present invention two.
Fig. 5 is the schematic diagram of the section structure of the Hall water flow sensing unit in the embodiment of the present invention two.
Fig. 6 is the dimensional decomposition structure diagram of the Hall water flow sensing unit in the embodiment of the present invention two.
Fig. 7 is the dimensional decomposition structure diagram of the embodiment of the present invention two.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.Attached drawing only for illustration, should not be understood as to this
The limitation of patent.
For the more succinct the present embodiment that illustrates, certain in attached drawing or explanation well known to a person skilled in the art but with this
The incoherent components of the main contents of invention can be omitted.In addition for convenient for stating, certain components have province in attached drawing
Slightly, it zooms in or out, but does not represent the size or entire infrastructure of actual product.
Embodiment one:
As shown in Figure 1, a kind of electromagnetic heater, tubular upper casing 11, the lower end of capping upper casing 11 including lower end opening are open
Bottom cover 12, can be generated heat by electromagnetic induction and the supply water metal tube 21 flowed through, coil block 22, the heat carrier with straight-through chamber
23。
For metal tube 21 in the present embodiment using the stainless steel tube of straight-tube shape, the both ends of metal tube 21 are respectively equipped with outer spiral shell
Tooth.Two ports of the lumen of metal tube 21 are respectively inlet and outlet.Heat carrier 23 in the present embodiment is using thermally conductive
Metal material of good performance is made, such as aluminium alloy.
The lower end that bottom cover 12 covers upper casing 11 is open, and the progress of the first sealing ring 14 is accompanied between bottom cover 12 and upper casing 11
Sealing, upper casing 11 and bottom cover 12 surround an accommodating chamber.The upper end top plate inner face of upper casing 11 extends isolating cylinder 13 straight down,
The upper port of the open at both ends of isolating cylinder 13, isolating cylinder 13 is located at the upper end top plate of upper casing 11, the lower port position of isolating cylinder 13
In in accommodating chamber.The upper port of isolating cylinder 13 and the upper end top plate of upper casing 11 are integral type sealed connection.
Coil block 22 includes the coil plate rail 221 with helix groove of tubular and the wire casing for being coiled in coil plate rail 221
Interior electromagnetic coil 222.22 sets of the coil block outsides in isolating cylinder 13, metal tube 21 are inserted into the barrel chamber of isolating cylinder 13, gold
The middle section part for belonging to pipe 21 can be generated heat by 222 electromagnetic induction of electromagnetic coil.Between metal tube 21 and isolating cylinder 13 there are every
Hot gap.
The inlet end of metal tube 21 passes through the lower port of isolating cylinder 13 and is located in accommodating chamber.The straight-through chamber of heat carrier 23
Two-port be respectively inlet and outlet, the inlet and outlet of heat carrier 23 is respectively equipped with internal screw thread, the water inlet of metal tube 21
The internal screw thread of the outlet of the external screw teeth and heat carrier 23 at end is threadedly engaged, and the inlet end of metal tube 21 and heat carrier 23 go out
Mouth end accompanies the second sealing ring 31 and is sealed, and is connected to the lumen of metal tube 21 with the sealing of the straight-through chamber of heat carrier 23.It is thermally conductive
The import of body 23 is connected with the first reduction nipple 24, the external screw teeth of the bigger diameter end of the first reduction nipple 24 and heat carrier 23
The internal screw thread of import is threadedly coupled, and is accompanied third sealing ring 32 between the first reduction nipple 24 and heat carrier 23 and is sealed,
Make straight-through chamber and the sealing connection of the first reduction nipple 24 of heat carrier 23.The miner diameter end of first reduction nipple 24 passes through bottom cover
12, the 4th sealing ring 33 accompanied between the step surface and bottom cover 12 of the first reduction nipple 24, the first reduction nipple 24
The part that miner diameter end exposes to bottom cover 12 is equipped with external screw teeth and is locked with the first nut 25, and tightening the first nut 25 can clamp
4th sealing ring 33 is to make the miner diameter end hermetically passing bottom cover 12 of the first reduction nipple 24.First reduction nipple 24 it is small
Diameter end exposes to the part of the first nut 25 for connecting external water source pipeline, such as municipal tap water pipeline.
The water outlet end of metal tube 21 passes through the upper port of isolating cylinder 13, and exposes to outside the upper end top plate of upper casing 11.
The part that the external screw teeth of the water outlet end of metal tube 21 exposes to the upper end top plate of upper casing 11 is locked with the second nut 26, the second spiral shell
Mother 26 is against outside the upper end top plate of upper casing 11.The 5th sealing ring 34 is accompanied between the lower port and heat carrier 23 of isolating cylinder 13,
Locking the second nut 26 can drive heat carrier 23 to clamp the 5th sealing ring 34 by metal tube 21, to make 13 He of isolating cylinder
Heat carrier 23 is tightly connected, and is equivalent to the sealed part for surrounding metal tube 21 and being located in accommodating chamber of isolating cylinder 13.Metal tube
The part that 21 water outlet end exposes to the second nut 26 is connected with the second reduction nipple 27, the water outlet end of metal tube 21
The internal screw thread of the bigger diameter end of external screw teeth and the second reduction nipple 27 is threadedly coupled, the water outlet end of metal tube 21 and the second variable diameter
The 6th sealing ring 35 is accompanied between pipe fitting 27 to be sealed, and connects the lumen of metal tube 21 and the sealing of the second reduction nipple 27
It is logical.The miner diameter end of second reduction nipple 27 is used to connect the use water terminal of user, such as tap.
In the accommodating chamber that upper casing 11 and bottom cover 12 surround, and isolating cylinder 13, heat carrier 23 and the first reduction nipple 24
Outer space is the space of closing and sealing, insulating heat-conductive liquid is filled in this space, electromagnetic coil 222 and heat carrier 23 all soak
Bubble is in insulating heat-conductive liquid.The insulating heat-conductive liquid of the present embodiment is oily using the good insulating heat-conductive of heating conduction, such as commonly
Transformer oil.
The upper end top plate integral molding of the upper casing 11 of the present embodiment goes out cavity 111, and interference fit has silica gel in cavity 111
15 are covered, there is the pressing plate 16 of capping cavity 111 on the upper end top plate of upper casing 11 using screw locking, the lead of electromagnetic coil 222 is worn
Cavity 111, silica gel sheath 15 and pressing plate 16 are crossed, pressing plate 16 squeezes silica gel sheath 15, silica gel sheath when being connected to the upper end top plate of upper casing 11
15 squeeze the lead of cavity 111 inner face and electromagnetic coil 222 again, so that the lead-in wire sealing of electromagnetic coil 222 is made to pass through upper casing 11,
Electromagnetic coil 222 to be connected with external control circuit.
The operation logic of the electromagnetic heater of the present embodiment is: cold water is flowed into from the first reduction nipple 24, by leading
The straight-through chamber of hot body 23 enters the lumen of metal tube 21, is then flowed out by the second reduction nipple 27.Make electromagnetism when cold water flows through
Coil 222 is powered on, and heat is conducted to cold water after being generated heat by electromagnetic induction by metal tube 21, in this way from the second reduction nipple
The water of 27 outflows just becomes warm water or hot water.
As depicted in figs. 1 and 2, the water cavity 100 that the segment dislocation water supply of the metal tube 21 in the present embodiment is flowed through, metal tube
Insulation voids between 21 and isolating cylinder 13 form heat-insulation chamber 200, isolating cylinder 13, heat carrier 23,24 and of the first reduction nipple
Heat dissipation cavity 300 is formed between upper casing 11 and bottom cover 12, fills insulating heat-conductive liquid in heat dissipation cavity 300.Water cavity 100,200 and of heat-insulation chamber
Heat dissipation cavity 300 is mutually independent, is not connected to mutually, realizes electricity separation.Metal tube 21 and insulating heat-conductive liquid in the present embodiment do not have
There is direct contact, can greatly reduce or even avoid the heat between metal tube 21 and water and insulating heat-conductive liquid by heating
Conduction.
Electromagnetic coil 222 in the present embodiment is immersed in insulating heat-conductive liquid, when electromagnetic coil 222 is powered on itself
The heat of generation can rapidly be conducted to insulating heat-conductive liquid, and part heat can be absorbed in insulating heat-conductive liquid itself under normal conditions
Amount, but also heat can be conducted to upper casing 11 and bottom cover 12, upper casing 11 and bottom cover 12 radiate heat into ambient enviroment again
In, to realize the purpose to radiate to electromagnetic coil 222, electromagnetic coil 222 is avoided to be easily damaged.
In addition, the water into the straight-through chamber of heat carrier 23 is generally cold water, and heat carrier 23 is immersed in insulating heat-conductive liquid,
To conduct heat between cold water and insulating heat-conductive liquid using heat carrier 23.Generally, the temperature of insulating heat-conductive liquid wants high
It in the temperature of cold water, especially in cold winter, both can preferably cool down to insulating heat-conductive liquid in this way, reinforce electromagnetic coil
222 heat dissipation effect, and temperature of cold water rises can be given, play the role of preheating cold water.
As shown in figure 3, improving heat-transfer rate, the present embodiment is in heat carrier 23 to reinforce the heat-conducting effect of heat carrier 23
Lateral surface be evenly arranged multiple heat transmission fins 231.
The present embodiment can be used in immediately heating water heater, can also be used in storage-type electric water heater, heating power can be with
Form according to water heater etc. rationally designs.Such as the present embodiment be used in immediately heating water heater in when, flow through the water of metal tube 21
It is rapidly heated, can directly use.For another example when the present embodiment is used in storage-type electric water heater, connect at the second reduction nipple 27
Logical water tank or water storage cylinder.Certainly, the electromagnetic heater of the present embodiment is not limited to be used in immediately heating water heater or storage
In ability of swimming water heater.
It is either used in which kind of water heater, or is used in other electrical equipments, may be by external control circuit
Control the work of electromagnetic coil 222, and external control circuit can be arranged in the place of relatively dry, avoid external control electricity
Short circuit phenomenon occurs for road, improves the stability and safety of product.
Embodiment two:
As shown in figs. 4 and 7, the present embodiment introduces a kind of instant heating type electromagnetism that the electromagnetic heater using embodiment one is constituted
The first reduction nipple 24 in embodiment one is substituted for Hall water flow sensing unit 41 first by water heater.The present embodiment also wraps
Include control circuit board 28.The control circuit board 28 and Hall water flow sensing unit 41 of the present embodiment are all immersed in heat dissipation cavity 300
In insulating heat-conductive liquid.
Inventor refer to Hall water flow sensing unit in the prior art, and according to its function in the present embodiment need into
Simplified and Curve guide impeller is gone.As shown in Figure 5 and Figure 6, the Hall water flow sensing unit 41 in the present embodiment includes 411 He of upper half shell
Lower half shell 412, upper half shell 411 and lower half shell 412 pass through the chamber for being threadedly engaged and fastening and surrounding a straight-tube shape, upper half shell 411
The 7th sealing ring 413 is accompanied between lower half shell 412, is tightly connected upper half shell 411 and lower half shell 412.Upper half shell 411 is equipped with
The circular ring shape water outlet end of evagination, lower half shell 412 are equipped with the circular ring shape inlet end of evagination, the water outlet of Hall water flow sensing unit 41
Mouthful end and inlet end are located at the upper and lower side of chamber and coaxially arranged.The water outlet end of Hall water flow sensing unit 41 and water inlet
Mouth end is respectively equipped with external screw teeth.The internal screw thread of the import of the external screw teeth and heat carrier 23 of the water outlet end of Hall water flow sensing unit 41
It is threadedly coupled, third sealing ring 32 is clamped between the water outlet end of Hall water flow sensing unit 41 and heat carrier 23, makes thermally conductive
The straight-through chamber of body 23 is connected to the cavity seal of Hall water flow sensing unit 41.The inlet end of Hall water flow sensing unit 41 passes through bottom
Lid 12, the 4th sealing ring 33 are sandwiched between the step surface and bottom cover 12 of the lower half shell 412 of Hall water flow sensing unit 41, the first spiral shell
The inlet end of mother 25 and Hall water flow sensing unit 41 exposes to the external screw teeth of 12 part of bottom cover and is threadedly engaged and locks, and tightens the
One nut 25 can clamp the 4th sealing ring 33, to make the inlet end hermetically passing bottom cover 12 of Hall water flow sensing unit 41.
The inlet end of Hall water flow sensing unit 41 exposes to the part of the first nut 25 for connecting external water source pipeline, such as municipal administration
Tap water pipe line.
Inner impeller 414, the center of rotation and Hall of inner impeller 414 are rotatably connected in the chamber of Hall water flow sensing unit 41
The inlet end and water outlet end of water flow sensing unit 41 are coaxial, and there are two the location arrangements that center of rotation is deviateed in inner impeller 414
Magnet 415, two magnet 415 in inner impeller 414 are arranged symmetrically around the center of rotation of inner impeller 414 and close to inner impellers
414 outer edge.The outside rotation of the upper half shell 411 of Hall water flow sensing unit 41 is socketed with out rotor 416, out rotor 416
Center of rotation and the center of rotation of inner impeller 414 are coaxial.Arrangement is there are two magnet 415 on out rotor 416, on out rotor 416
Two magnet 415 are arranged symmetrically around the center of rotation of out rotor 416 and close to the inward flanges of out rotor 416.On out rotor 416
Two magnet 415 and two magnet 415 in inner impeller 414 apart from it is nearest when be that homopolarity is opposite, when inner impeller 414 rotates
Out rotor 416 is pushed to rotate by the interaction between magnet 415.It is fixed on the outside of the lower half shell 412 of Hall water flow sensing unit 41
Connection one for detecting the Hall sensor 417 of the magnet 415 on out rotor 416.
Again as shown in figs. 4 and 7, the present embodiment is tightly connected one for examining on the side wall of the second reduction nipple 27
The NTC formula temperature sensor 29 of coolant-temperature gage is measured, the second reduction nipple is protruded into the sound end sealing of NTC formula temperature sensor 29
In 27.The outer upper side of the upper end top plate of upper casing 11 is connected with cap 17, in this way between the upper end top plate of upper casing 11 and cap 17
The secondary chamber 400 of a receiving is formed, the water outlet end of metal tube 21, a part of the second reduction nipple 27 and NTC formula temperature pass
Sensor 29, which is all hidden, to be contained in the secondary chamber 400 of receiving.It is corresponding that the cavity 111 of the upper end top plate of upper casing 11 also is located at the secondary chamber 400 of receiving
In region, i.e., cavity 111, silica gel sheath 15 and pressing plate 16 are all covered in by cap 17.The miner diameter end of second reduction nipple 27 is worn
Cap 17 is crossed in order to connect the use water terminal of user, such as tap.
Hall sensor 417, electromagnetic coil 222 and all circuit connections of NTC formula temperature sensor 29 are to control circuit board 28.
Lead, electromagnetic coil 222 between Hall sensor 417 and control circuit board 28 and the lead between control circuit board 28 all may be used
To be arranged in heat dissipation cavity 300, do not have to across upper casing 11 and bottom cover 12.NTC formula temperature sensor 29 and control circuit board 28 it
Between lead pass through upper casing 11 upper end top plate cavity 111, silica gel sheath 15 and pressing plate 16, i.e., the lead-in wire sealing pass through upper casing
11.Similarly, control circuit board 28 for electrical lead also from hermetically passing upper casing 11 from cavity 111, be then then passed through cap 17 with
For connecting external power supply.
When having water flowing in the chamber of the Hall water flow sensing unit 41 in the present embodiment, water flow just will drive inner impeller 414
Rotation, the center of rotation of inner impeller 414 and the inlet end and water outlet end of Hall water flow sensing unit 41 are coaxial, it can be ensured that interior
Impeller 414 is quick on the draw.It is arranged symmetrically two magnet 415 in inner impeller 414, both will not increase inner impeller because magnet is excessive
Inertia force when starting turning, and inner impeller can be made to obtain better dynamic balancing, keep inner impeller rotation more steady, to drop
The abrasion of low inner impeller, prolongs the service life.
The present embodiment one electromagnetic heater and control circuit board 28 and Hall water flow sensing unit 41 etc. in conjunction with the embodiments
Constitute instant heating type electromagnet water heater.Whether Hall water flow sensing unit 41 has water flow to pass through for detecting in water route.When there is water flow logical
Out-of-date, the transmission of Hall sensor 417 has water signal to control circuit board 28, and control circuit board 28 controls electromagnetic coil 222 and works.
When not having water flow to pass through, Hall sensor 417 sends no water signal to control circuit board 28, and control circuit board 28 controls electromagnetism
Coil 222 stops working.And the Hall water flow sensing unit 41 in the present embodiment can also detect the size of water flow in water route, water
Stream is bigger, and inner impeller 414 rotates faster, and the frequency that Hall sensor 417 sends signal is higher, in this way can be in control circuit
The heating power for automatically adjusting electromagnetic coil 222 according to the height of signal frequency is set in plate 28, is added to realize that intelligence is automatic
Heat is greatly convenient for the user to use.
The present embodiment also utilizes NTC formula temperature sensor 29 to detect leaving water temperature, in this way can be in control circuit board 28
The online value for setting leaving water temperature controls electromagnetic wire by control circuit board 28 when the leaving water temperature of detection is higher than online value
Circle 222 stops working, and plays the role of security protection.
Currently, more electronic component can generally be arranged by being used to control in the control circuit board of electromagnetic coil, such as
IGBT, rectifier bridge, power tube, high-voltage capacitance, conventional capacitive, resistance, choke coil etc., the fever of some of them electronic component
It is larger.Control circuit board 28 and Hall water flow sensing unit 41 are all immersed in insulating heat-conductive liquid by the present embodiment, can be saved in this way
Lead is saved, and the lead between control circuit board 28, Hall sensor 417 and electromagnetic coil 222 can be hidden and be contained in heat dissipation cavity
In 300, in order to avoid there is excessive lead exposed, keep instant heating type electromagnet water heater more integrated, convenient for assembling and installation.And it can
With the cooling electronic component using insulating heat-conductive liquid to control circuit board 28 and its above.In addition, will using insulating heat-conductive liquid
The thoroughly isolation such as control circuit board 28 and its electronic component above and water, vapour, avoids that short circuit phenomenon occurs, it is hidden to eliminate safety
Suffer from, it is ensured that electromagnet water heater operates normally.
In addition, the out rotor 416 in the present embodiment is also immersed in insulating heat-conductive liquid.Inner impeller 414 passes through magnetic when rotating
The iron principle that identical charges repel each other pushes out rotor 416 to rotate, and the rotation of out rotor 416 can stir insulating heat-conductive liquid, makes insulating heat-conductive
Liquid flows in heat dissipation cavity 300, thus make insulating heat-conductive liquid conduction heat speed faster, can better by heat carrier,
Shell etc. effectively radiates to electromagnetic coil 222, control circuit board 28 and its electronic component above etc..Inner impeller 414
Rotate faster, out rotor 416 just rotates faster, and stronger to the agitation of insulating heat-conductive liquid, heat dissipation effect is better, certain
Play the role of automatically adjusting heat dissipation effect in degree.
In addition, the present embodiment utilizes cap 17 and upper casing 11 by the water outlet end of metal tube 21, the second reduction nipple 27
A part, NTC formula temperature sensor 29, some leads, silica gel sheath 15 and lead risen in the encirclements such as position that pass through of upper casing 11
Come, protection can be played the role of, avoids unexpected touch from damaging, and make NTC formula temperature sensor 29 and external environment
It is relatively isolated, avoids being a greater impact, the temperature value that NTC formula temperature sensor 29 detects is more accurate.
The above is only two specific embodiments of the invention, but the design concept of the present invention is not limited to this, all utilizations
The insubstantial modifications that present inventive concept makes the present invention, fall within the scope of protection of the present invention.
Claims (10)
1. a kind of electromagnetic heater, including that can be generated heat by electromagnetic induction for water storage or the metal-back flowed through that supplies water
The electromagnetic coil that body, electromagnetic induction metal shell generate heat, which is characterized in that further include the shell to form closed accommodating chamber, institute
At least electromagnetic induction heating part for the metal shell stated is arranged in the accommodating chamber of shell, accommodating chamber of the metal shell in shell
Interior part is sealed to be surrounded by separation sleeve, and the electromagnetic coil is arranged in the accommodating chamber of shell outside separation sleeve, shell
Space in accommodating chamber outside separation sleeve is packaged with insulating heat-conductive liquid, and metal shell is equipped with inlet and outlet, metal shell
Inlet and outlet seal be connected to outside shell respectively.
2. electromagnetic heater according to claim 1, which is characterized in that stayed between the metal shell and separation sleeve
There are insulation voids, the water inlet of metal shell is located in the accommodating chamber of the shell, and band cavity is equipped in the accommodating chamber of shell
Heat carrier, the exit seal of the cavity of the water inlet and heat carrier of metal shell is connected to, the import sealing of the cavity of heat carrier
It is connected to outside shell, heat carrier immerses in the insulating heat-conductive liquid in the accommodating chamber of shell.
3. electromagnetic heater according to claim 2, which is characterized in that the heat carrier has heat transmission fin.
4. a kind of instant heating type electromagnet water heater, which is characterized in that including electromagnetic heater as claimed in claim 2, further include
Control circuit board and Hall water flow sensing unit, the metal shell are metal tube, and two ports of metal tube are respectively described
Metal shell inlet and outlet, the import of the cavity of the heat carrier and the water outlet of Hall water flow sensing unit are close
Connection, Hall water flow sensing unit and the electromagnetic coil all circuit connections are sealed to control circuit board.
5. instant heating type electromagnet water heater according to claim 4, which is characterized in that the control circuit board and Hall water
Flow sensor is all disposed in the accommodating chamber of the shell and all immerses in the insulating heat-conductive liquid, Hall water flow sensing
The inlet seal of device is connected to outside shell.
6. instant heating type electromagnet water heater according to claim 5, which is characterized in that the Hall water flow sensing unit includes
The cavity of straight-tube shape, the inlet and outlet of Hall water flow sensing unit are located at the both ends of cavity and coaxially arranged, cavity
It is inside rotatably connected to inner impeller, the center of rotation of inner impeller and the water inlet and water outlet of Hall water flow sensing unit are coaxial, internal lobe
The location arrangements for deviateing center of rotation on wheel have magnet, and the Hall sensor for detecting magnet, Hall are disposed on the outside of cavity
Sensor circuit is connected to the control circuit board.
7. instant heating type electromagnet water heater according to claim 6, which is characterized in that the chamber of the Hall water flow sensing unit
It is rotatably connected to out rotor on the outside of body, the center of rotation of the center of rotation of out rotor and the inner impeller is coaxial, out rotor
On be disposed with magnet, the magnet on magnet and inner impeller on out rotor apart from it is nearest when be that homopolarity is opposite or heteropolar phase
It is right, out rotor rotation is driven by the interaction between magnet when inner impeller rotates, Hall sensor is for detecting inner impeller
Magnet or out rotor on magnet.
8. instant heating type electromagnet water heater according to claim 5, which is characterized in that the separation sleeve is isolating cylinder, every
From the sealed set of cylinder in the outside of metal tube, one end of isolating cylinder and the shell are tightly connected, the other end of isolating cylinder and
The heat carrier is tightly connected, and the water outlet end of the metal tube exposes to shell.
9. instant heating type electromagnet water heater according to claim 8, which is characterized in that the water outlet end of the metal tube is set
There is the temperature sensor for detecting water flow temperature in metal tube, temperature sensor circuit is connected to control circuit board.
10. instant heating type electromagnet water heater according to claim 9, which is characterized in that the outer side of shell is connected with shell
Lid forms between shell and cap and accommodates secondary chamber, and the water outlet end and temperature sensor of the metal tube, which are located at, accommodates secondary chamber
Interior, the water outlet of metal tube is connected on the outside of cap, the lead, control circuit board between temperature sensor and control circuit board with
The lead of external power supply connection passes through silica gel sheath hermetically passing shell, and the position that lead passes through is corresponding in the secondary chamber of receiving
In region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563408.4A CN109631315B (en) | 2018-12-20 | 2018-12-20 | Electromagnetic heating device and instant electromagnetic water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563408.4A CN109631315B (en) | 2018-12-20 | 2018-12-20 | Electromagnetic heating device and instant electromagnetic water heater |
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| CN109631315A true CN109631315A (en) | 2019-04-16 |
| CN109631315B CN109631315B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811563408.4A Active CN109631315B (en) | 2018-12-20 | 2018-12-20 | Electromagnetic heating device and instant electromagnetic water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110536497A (en) * | 2019-09-23 | 2019-12-03 | 西安慧金科技有限公司 | A kind of Double layer high efficient induction heater and heating means |
| CN111334327A (en) * | 2020-03-13 | 2020-06-26 | 陆克思 | Petroleum screening device |
| CN113587420A (en) * | 2020-04-30 | 2021-11-02 | 马勒国际有限公司 | Electric heating device |
| CN114811938A (en) * | 2022-04-22 | 2022-07-29 | 康亿佳(山东)电器有限公司 | Instant water heater |
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| CN209326083U (en) * | 2018-12-20 | 2019-08-30 | 中山市雅乐思电器实业有限公司 | A kind of electromagnetic heater and a kind of instant heating type electromagnet water heater |
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| CN2575546Y (en) * | 2002-10-22 | 2003-09-24 | 谭宏章 | Electrical shock protective electric water heater |
| WO2009115013A1 (en) * | 2008-03-19 | 2009-09-24 | 卢金河 | Instant-heating electric water heater |
| CN201858773U (en) * | 2010-09-13 | 2011-06-08 | 缪博华 | Electromagnetic heating device of electromagnetic coil soaked in liquid |
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| CN110536497A (en) * | 2019-09-23 | 2019-12-03 | 西安慧金科技有限公司 | A kind of Double layer high efficient induction heater and heating means |
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|---|---|
| CN109631315B (en) | 2024-07-02 |
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