CN208588080U - A kind of induction heating apparatus of high efficient and reliable - Google Patents

Abstract

The utility model discloses a kind of induction heating apparatus of high efficient and reliable, comprising: inside sets the metallic heating body of hot-water cavity；It is set in the isolation part of metallic heating body lateral surface, there is heating chamber between the medial surface of the isolation part and the lateral surface of metallic heating body；The insulating heat-conductive portion being made from a material that be thermally conductive has preheating cavity between the insulating heat-conductive portion and isolation part；It is wrapped in the electromagnetic induction coil in insulating heat-conductive portion；The first end of the preheating cavity is connected to cold water pipe, the second end of the second end connection heating chamber of the preheating cavity, and the first end of heating chamber is connected to the first end of hot-water cavity, and the second end of the hot-water cavity is connected to hot-water line；Rotation section in heating chamber, is set in the spire of metallic heating body lateral surface, and an end and the rotation section of the spire are fixedly linked.The utility model can prevent to generate scale on metallic heating body surface, advantageously reduce electromagnetic induction coil because high temperature generates failure, raising energy conversion efficiency and heat utilization rate and heating speed.

Description

A kind of induction heating apparatus of high efficient and reliable

Technical field

The utility model relates to induction heating techniques, more particularly, to a kind of induction heating apparatus of high efficient and reliable.

Background technique

By taking electromagnet water heater as an example, electromagnet water heater is a kind of typical induction heating apparatus, is passed through using high-frequency current Electromagnetic induction coil generates electromagnetic field, and the heater (for example, heater mostly uses greatly metal tube) in electromagnetic field, which incudes, to be produced Raw eddy-current heating, so that the cold water for conveying metal tube contact is heated.Existing electromagnet water heater lacks of both at least existing It falls into: first is that scale still can be on the surface for being deposited in metal tube, to influence the heat exchange energy of heat-generating pipe in the long-term use Power even causes hot-spot that electromagnetic induction coil is caused dry combustion method damage occur；Second is that since induction coil itself has certain electricity Various reasons, the electromagnetic induction coils such as resistance can all have fever phenomenon during the work time, if electromagnetic induction coil fever is tighter Weight not only may cause overheat dry combustion method damage, it is also possible to dissipate because the heat of induction coil production and surrounding air carry out heat exchange It is lower that hair is not utilized the efficiency for causing electric energy to be converted into heater thermal energy.

In order to solve to generate the technical problem of scale in electromagnet water heater, Chinese patent CN2015205367799 proposes one Electromagnetic heater of the kind for the disassembling cleaning on water heater, is additionally provided on the outer wall of heat-generating pipe for intake tunnel The spiralling spiral guide slot of interior water, due to water, it is spiral, and one side can be effectively automatically to heat-generating pipe The scale that outer surface may have is cleaned, and on the other hand its heating is also more uniform.The technical solution at least exists as follows Defect: it 1. needs to carve spiral guide slot in fever pipe outer wall, increases the processing cost of heat-generating pipe；Though 2. passing through setting spiral Guide groove carries out heat-generating pipe to wash away decontamination, reduces precipitation of scales to a certain extent in fever pipe surface, has centainly Storing scale removal effect, still, current scour scale removal ability or effect are extremely limited, without fundamentally solving to generate scale Technical problem.

In order to solve the technical problem of electromagnetic induction coil fever, Chinese patent application CN 2010102603857 is disclosed Heater charge bar is arranged in electromagnetic induction-type quick water heating device, the water-heating device center, and spiral water is arranged in heater charge bar Road, heater charge bar are placed in tubular dielectric body, are wound outside tubular insulator with litz wire and are constituted electromagnetic induction coil, Induction coil can generate certain heat at work, although the heat that induction coil generates influences smaller meeting to whole efficiency Induction coil temperature is increased, time length can damage coil, so tubular insulator is also not beneficial too thick, generally at 2 millimeters or so, The heat overwhelming majority that induction coil generates in this way can be only absorbed by the water by flowing water in tubular dielectric body by conduction pattern, can So that induction coil, which works long hours, will not enter high temperature.The technical solution is mentioned by the relatively thin tubular insulator of selection tube wall The capacity of heat transmission in high induction coil and tubular dielectric body between water, however, due to water and heater material in tubular dielectric body Stick contacts and is heated rapidly into hot water, so as to cause the induction coil outside the water and tubular insulator inside tubular insulator Between the temperature difference it is smaller, the lesser temperature difference limit induction coil generation heat transfer energy from heat to tubular insulator internal water Power is limited, to allow induction coil heating problem not solve, and converting electric energy to the device can be by tubulose at all The transfer efficiency of the absorbed thermal energy of water inside insulator is lower.

Utility model content

The utility model proposes a kind of induction heating apparatuses of high efficient and reliable, on the one hand pass through the scaler of automatically descaling Structure is thoroughly to prevent to generate scale, on the other hand by setting preheating cavity to electromagnetic induction coil radiating and cooling and to cold water progress Preheating, it is ensured that temperature is lower to realize reliable steady operation at work for electromagnetic induction coil, and improves energy conversion effect Rate and heating speed, to solve currently available technology, there are electromagnetic induction coil, easy dry combustion method damage causes reliably during the work time Property the difference and lower technical problem of capacity usage ratio.

The utility model adopts the following technical solution realizes: a kind of induction heating apparatus of high efficient and reliable comprising: inside set The metallic heating body 1 of hot-water cavity；It is set in the isolation part 2 of 1 lateral surface of metallic heating body, the medial surface and metal of the isolation part 2 There is heating chamber 3 between the lateral surface of heater 1；The insulating heat-conductive portion 4 being made from a material that be thermally conductive, the insulating heat-conductive portion 4 are arranged There is preheating cavity 5 between 2 lateral surface of isolation part, 2 lateral surface of medial surface and isolation part in the insulating heat-conductive portion 4；It is wrapped in absolutely The electromagnetic induction coil 6 of 4 lateral surface of edge heat-conducting part；The first end of the preheating cavity 5 is connected to cold water pipe 723, and the of the preheating cavity 5 Two ends are connected to the second end of heating chamber 3, and the first end of heating chamber 3 is connected to the first end of hot-water cavity, the hot water The second end of chamber is connected to hot-water line 841；Rotation section 91 in the second end of heating chamber 3, is set in metallic heating body 1 The spire 92 of lateral surface, an end and the rotation section 91 of the spire 92 are fixedly linked.

Wherein, rotation section 91 is turbine or impeller.

Wherein, insulating heat-conductive portion 4 is made of glass, quartz or silicon wafer, and isolation part 2 is made of plastic cement or ceramics.

Wherein, the shape in insulating heat-conductive portion 4, isolation part 2 and metallic heating body 1 all can be round, oval or rectangular, And insulating heat-conductive portion 4, isolation part 2 and the central axis having the same of metallic heating body 1.

Wherein, metallic heating body 1 is stainless pipe, and isolation part 2 is ceramic tube or plastic tube, and insulating heat-conductive portion 4 is silicon Crystalline substance pipe, glass tube or quartz ampoule, the caliber in the caliber < insulating heat-conductive portion 4 of the isolation part caliber < 2 of metallic heating body 1, and gold Belong to heater 1, isolation part 2 and 4 three of insulating heat-conductive portion coaxial arrangement.

Wherein, it is equipped in preheating cavity 5 for increasing the cold water and the insulating heat-conductive portion 4 that enter preheating cavity 5 from cold water pipe 723 Between contact area cooling fin, which is fixed on the inner sidewall in insulating heat-conductive portion 4.

Wherein, cooling fin is one or more pieces, is arranged on the inner sidewall in insulating heat-conductive portion 4 in annulus or helical arrangement.

Wherein, the induction heating apparatus further includes the first end for making the first end of preheating cavity 5 Yu heating chamber 3 Portion, hot-water cavity first end be not attached to logical and the first end of heating chamber 3 made to be connected with the first end of hot-water cavity Intake end cover, which is arranged in the first end in insulating heat-conductive portion 4, and cold water pipe 723 is arranged on the intake end cover.

Wherein, the length of metallic heating body 1 is less than the length of isolation part 2, the first end of metallic heating body 1, second end The notch 31 in heating chamber 3 is all had between the first end of portion and isolation part 2, the second end；Intake end cover includes: close Envelope is connected to the first water guide cover 72 of the first end in insulating heat-conductive portion 4, and the first water guide cover 72 is interior with cold water pipe 723 and in advance The cold water gap 721 that hot chamber 5 is connected；Lid closes the first water seal cover 73 in 72 end of the first water guide cover；Sequentially pass through the first envelope First water guide tube 74 at the axial middle part of water cover 73, the first water guide cover 72, the lower end of first water guide tube 74 extend to heating Notch 31 in chamber 3 simultaneously protrudes into the hot-water cavity of metallic heating body 1, and the lower end of first water guide tube 74 has the first water inlet Hole 741, first inlet opening 741 are located at the notch 31 in heating chamber 3 to which the first inlet opening 741 is connected to notch 31.

Wherein, the induction heating apparatus further includes the second end for making the second end of preheating cavity 5 Yu heating chamber 3 Be connected and make the second end of preheating cavity 5, the second end of heating chamber 3 be not attached to the second end of hot-water cavity it is logical go out Water end (W.E.) lid, which is arranged in the second end in insulating heat-conductive portion 4, and the setting of hot-water line 841 is covered in the water outlet.

Wherein, water outlet end cap includes: the second water guide cover 82 for being sealedly connected on the second end in insulating heat-conductive portion 4, and second Water guide cover 82 is equipped with the hot water gap 821 for the second end of preheating cavity 5 to be connected with the second end of heating chamber 3； Lid closes the second water seal cover 83 in 82 end of the second water guide cover；Sequentially pass through the axial direction of the second water seal cover 83, the second water guide cover 82 Second water guide tube 84 at middle part, second water guide tube 84 are that two ends all have the bobbin of opening, second water guide tube 84 its In an end be arranged in the hot-water cavity in metallic heating body 1, another end of second water guide tube 84 is set as hot-water line 841。

Compared with prior art, the utility model has the following beneficial effects:

1. rotation section is arranged in the second end of heating chamber, rotation section drives spire to rotate together by water slug, spiral Portion during rotation can scrape the foreign matters such as the scale that may be deposited in metallic heating body outer surface, so that metal be made to send out Hot external surface thoroughly generates scale without chance, has reached the ultimate aim for preventing scale generation, and metal hair not only can be improved The heat-exchange capacity of hot body can also thoroughly solve to cause electromagnetic induction coil dry combustion method occur because generating scale on metallic heating body The technical problem of damage.

2. the utility model flows through preheating cavity to electromagnetic induction line by increasing preheating cavity in induction coil, using cold water Circle carries out radiating and cooling, not only contributes to reduce electromagnetic induction coil because high temperature generates failure, improves the work of induction heating apparatus Make stability and reliability；And since the external heat that distributes of the lower event of electromagnetic induction coil operating temperature is smaller, energy is reduced Consume is lost, so as to improve energy conversion efficiency；Furthermore preheating cavity is by absorbing the partial heat of electromagnetic induction coil to cold Water is preheated, and heating efficiency not only can be improved, additionally it is possible to be further improved heat utilization rate, be played the work for reducing energy consumption With.

3. the utility model proposes induction heating apparatus it is simple and compact for structure, cost of implementation is low, it is easy to process manufacture etc. Advantage.

To sum up, the utility model improves the reliability of induction heating apparatus by two aspects: first is that by scale removal mechanism Prevent metallic heating body outer surface and generates scale to ensure not will lead to electromagnetic induction coil part overheat, on the other hand by pre- The cold water of hot chamber carries out radiating and cooling to electromagnetic induction coil in warm, to ensure that electromagnetic induction coil is not in dry Scaling loss is bad, to improve functional reliability.Furthermore the utility model ensures the height of induction heating apparatus also by two aspects Imitate work: first is that heating efficiency is high, this is because first with preheating cavity to electromagnetic induction coil progress radiating and cooling to cold water into Row preheating, the water by preheating is again heated to the opposite reduction of preset temperature when institute calorific requirement, thus heating time section, hot water effluent It is high-efficient；Second is that energy conversion efficiency is high, this is also the part heat that electromagnetic induction coil fever is taken full advantage of by preheating cavity Can, reduce electromagnetic induction coil and distribute loss caused by heat, to reach efficient energy conversion efficiency.Also, it is above-mentioned Also induction heating apparatus is promoted while improving the reliability of induction heating apparatus simultaneously with efficient operation performance, scaler Structure and preheating cavity the two technical characteristics complement each other in entire technical solution, collective effect allows induction heating apparatus to have height Imitate reliable working performance.

Detailed description of the invention

Fig. 1 is the schematic perspective view the utility model proposes induction heating apparatus.

Fig. 2 is that the utility model proposes the decomposition texture schematic diagrams of induction heating apparatus one embodiment.

Fig. 3 is the schematic diagram of internal structure of induction heating apparatus shown in corresponding diagram 2.

Fig. 4 is that the decomposed structural schematic diagram of induction heating apparatus in one embodiment (is not drawn into absolutely compared to Fig. 2, Fig. 4 Edge heat-conducting part 4 and electromagnetic induction coil 6).

Specific embodiment

Further to illustrate that the application is the technical means and efficacy reaching predetermined purpose and being taken, below in conjunction with attached drawing And preferred embodiment, to specific embodiment, structure, feature and its effect according to the application, detailed description is as follows.Following In explanation, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, in one or more embodiments Special characteristic, structure or feature can be combined by any suitable form.

In conjunction with shown in Fig. 1-Fig. 3.The utility model proposes a kind of induction heating apparatuses of high efficient and reliable, comprising: inside sets heat The metallic heating body 1 of water cavity；It is set in the isolation part 2 of 1 lateral surface of metallic heating body, the medial surface and metal of the isolation part 2 are sent out The heating chamber 3 formed between the lateral surface of hot body 1 with gap；It is set in the insulating heat-conductive portion 4 of 2 lateral surface of isolation part, this is absolutely The preheating cavity 5 formed between 2 lateral surface of medial surface and isolation part of edge heat-conducting part 4 with gap；It is wrapped in outside insulating heat-conductive portion 4 The electromagnetic induction coil 6 of side, the electromagnetic induction coil 6 and external high frequency alternating current are electrically connected to generate alternating magnetic field Metallic heating body 1 is allowed to generate vortex to generate heat；Wherein by preheating cavity 5, heating chamber 3 and hot-water cavity (or metallic heating body 1) One same end is disposed as first end, and another same end is disposed as the second end, and the first of the preheating cavity 5 End connection cold water pipe 723, the second end of the second end connection heating chamber 3 of the preheating cavity 5, and the first end of heating chamber 3 Portion is connected to the first end of hot-water cavity, and the second end of the hot-water cavity is connected to hot-water line 841；For drive preheating after water from The second end of heating chamber 3 spirally flows to the scale removal mechanism 9 of the first end of heating chamber 3 along metallic heating body 1.

There is water inlet 32, the water inlet 32 is for allowing between the second end of preheating cavity 5 and the second end of heating chamber 3 The water preheated by preheating cavity 5 enters the second end of heating chamber 3 from the second end of preheating cavity 5.Further combined with Fig. 2- Shown in Fig. 4, in one embodiment, scale removal mechanism 9 includes: the rotation section 91 in the second end of heating chamber 3, the rotation The water that portion 91 is entered heating chamber 3 from the second end of preheating cavity 5 drives rotation；The spiral being set on metallic heating body 1 Portion 92(is for example, spire 92 is a spring), an end and the rotation section 91 of the spire 92 are fixedly linked, thus rotation section 91 drive spire 92 to rotate.Wherein, rotation section 91 is turbine or impeller.Also, since metal heat-generating pipe 1 is located at heating chamber 3 Interior part is the consistent cylindrical shape of outer diameter, therefore the internal diameter in spiral stream guidance portion 92 is 2 ~ 10mm bigger than the outer diameter of metallic heating body 1, from And spire 92 is made to be tightly attached to the outer surface of metallic heating body 1.When rotation section 91 is generated rotation by the water slug for entering heating chamber 3 Turn, rotation section 91 drives spire 92 to rotate synchronously, which is not only that cold water is moved to from the second end of heating chamber 3 Guiding role is provided in the flow process of the first end of heating chamber 3, is also tightly attached to 1 appearance of metallic heating body during rotation Face rotates, and can scrape to foreign matters such as the scales that may be deposited in 1 outer surface of metallic heating body in rotation process, to make gold Belong to 1 outer surface of heater and thoroughly generate scale without chance, it is ensured that will not may be used also because of the heat-exchange capacity of metallic heating body 1 Thoroughly to solve the technical problem for causing electromagnetic induction coil 6 dry combustion method damage occur because generating scale on metallic heating body 1.

Preferably, insulating heat-conductive portion 4, isolation part 2 and the central axis having the same of metallic heating body 1, insulating heat-conductive portion 4, the shape of isolation part 2 and metallic heating body 1 all can be round, ellipse or the arbitrary shapes such as rectangular.For example, insulating heat-conductive Portion 4, isolation part 2 and metallic heating body 1 are circular tube shaped or square tube type；Even, insulating heat-conductive portion 4 or/and isolation part 2 are round tube Shape, and isolation part 2 or/and metallic heating body 1 are square tube type, are illustrated with this.In Fig. 2, embodiment illustrated in fig. 3, metal Heater 1, isolation part 2 and insulating heat-conductive portion 4 are tubular, and metallic heating body 1 is located in isolation part 2, and isolation part 2 is located at insulation In heat-conducting part 4, three's central axis having the same, thus the preheating cavity 2 between isolation part 2 and insulating heat-conductive portion 4, position Heating chamber 5 between isolation part 2 and metallic heating body 1 is cylindric in a ring, with ensure preheating cavity 2, heating chamber 5 respectively with There is biggish thermo-contact surface between insulating heat-conductive portion 4, metallic heating body 1.

Certainly, in another embodiment, surface is thermally contacted between preheating cavity 2 and insulating heat-conductive portion 4 in order to increase, The inner surface in insulating heat-conductive portion 4 is equipped with several cooling fins, and cold water is allowed to flow to the process of the second end from the first end of preheating cavity 5 In have to flow through cooling fin, to promote the capacity of heat transmission between cold water and insulating heat-conductive portion 4, improve to electromagnetic induction coil 6 radiating and cooling ability.Cooling fin is one or more pieces, and the inner sidewall in insulating heat-conductive portion 4 is arranged in annulus or helical arrangement On.Cooling fin can be structure as a whole with insulating heat-conductive portion 4.Certainly, cooling fin may be to separate knot with insulating heat-conductive portion 4 Structure, for example, cooling fin is spiral helicine copper sheet, which is arranged in preheating cavity 5 and adequately thermally contacts with insulating heat-conductive portion 4 It is connected so that the heat in insulating heat-conductive portion 4 can pass to rapidly copper sheet, and copper sheet can increase and the contact of water in preheating cavity 5 Area is to improve in preheating cavity 5 water to the radiating and cooling ability of electromagnetic induction coil 6.

Insulating heat-conductive portion 4 is made of the material with good insulation characteristic and good heat conductive characteristic, for example, insulating heat-conductive portion 4 are made of glass, quartz or silicon wafer.Isolation part 2 is advisable with being made of the poor material of heating conduction, to avoid heating as far as possible Water in chamber 3 transfers heat to the cold water in preheating cavity 5 by isolation part 2, for example, isolation part 2 uses plastic cement or ceramic system At；Certainly, isolation part 2 can also be made of materials such as glass, quartz, but can influence preheating cavity 5 to a certain extent Radiating and cooling ability of the water to electromagnetic induction coil 6.

In a preferred embodiment, metallic heating body 1 is stainless pipe, and isolation part 2 is ceramic tube, insulating heat-conductive portion 4 be silicon wafer pipe, the caliber of the caliber < silicon wafer pipe of the caliber < ceramic tube of stainless pipe, and stainless pipe, ceramic tube and Silicon wafer pipe three coaxial arrangement.

Preheating cavity 5, heating chamber 3 and the respective first end of metallic heating body 1 are the first end of induction heating apparatus, in advance Hot chamber 5, heating chamber 3 and the respective the second end of metallic heating body 1 are the second end of induction heating apparatus.Induction heating apparatus First end be equipped with intake end cover, the intake end cover be used for make preheating cavity 5 first end and heating chamber 3 first end, The first end of hot-water cavity is not attached to logical and the first end of heating chamber 3 is made to be connected with the first end of hot-water cavity, should be into Water end (W.E.) is covered equipped with cold water pipe 723, the cold water pipe 723 be connected to preheating cavity 3 first end so as to the cold water in cold water pipe 723 into Enter preheating cavity 3；The second end of induction heating apparatus is equipped with water outlet end cap, which is used to make the second end of preheating cavity 5 Portion be connected with the second end of heating chamber 3 and make the second end of preheating cavity 5, heating chamber 3 the second end and hot-water cavity The second end be not attached to lead to, which covers equipped with hot-water line 841, and the second end of the hot-water line 841 and hot-water cavity connects Just hot water is passed to be discharged by hot-water line 841.

In one embodiment, the length of metallic heating body 1 is less than the length of isolation part 2, the first end of metallic heating body 1 Portion, the first end of the second end and isolation part 2 all have the notch 31 in heating chamber 3 between the second end.In the reality It applies in example, intake end cover includes: the first water guide cover 72, which is sealedly connected on insulation by the first sealing ring 71 The first end of heat-conducting part 4, and there is the cold water gap being connected with cold water pipe 723 and preheating cavity 5 in the first water guide cover 72 721；Lid closes the first water seal cover 73 in 72 end of the first water guide cover；Sequentially pass through the first water seal cover 73, first water guide cover 72 First water guide tube 74 at axial middle part, first water guide tube 74 are the bobbin that lower end has opening, first water guide tube 74 Notch 31 that lower end extends in heating chamber 3 simultaneously protrudes into the hot-water cavity of metallic heating body 1, and under first water guide tube 74 End has the first inlet opening 741, first inlet opening 741 be located at the notch 31 in heating chamber 3 to the first inlet opening 741 and Notch 31 is connected to.Water outlet end cap specifically includes: being sealedly connected on the second end in insulating heat-conductive portion 4 by the second sealing ring 81 Second water guide cover 82, the second water guide cover 82 are equipped with for the second end of preheating cavity 5 to be connected with the second end of heating chamber 3 Logical hot water gap 821；Lid closes the second water seal cover 83 in 82 end of the second water guide cover；Sequentially pass through the second water seal cover 83, Second water guide tube 84 at the axial middle part of two water guide covers 82, second water guide tube 84 are the bobbin that two ends all have opening, should A wherein end for second water guide tube 84 is arranged in the hot-water cavity in metallic heating body 1, another end of second water guide tube 84 End is set as hot-water line 841, which is located at the outside of the second end of induction heating apparatus.Therefore, cold water pipe 723 Cold water after the first end that cold water gap 721 enters preheating cavity 5, preheating cavity 5 absorb electromagnetic induction coil 6 pass through it is exhausted The heat that edge heat-conducting part 4 transmits is preheated, and the cold water gap of the first water guide cover 72 is then passed through from the second end of preheating cavity 5 721 enter heating chamber 3, carry out heat exchange with metallic heating body 1 in heating chamber 3 and are heated, then from the first water guide tube 74 First inlet opening 741 enters hot-water cavity, continues to carry out heat exchange with metallic heating body 1 in hot-water cavity, finally from hot-water cavity second Hot water is discharged in the hot-water line 841 of end.

In the above-described embodiments, the first water guide cover 72, the first water seal cover 73 and 74 three of the first water guide tube can be integrated Structure, alternatively, both the first water seal cover 73 and the first water guide tube 74 can be structure as a whole；Second water guide cover 82, the second water shutoff Lid 83 and 84 three of the second water guide tube can be structure as a whole, alternatively, both the second water seal cover 83 and second water guide tube 84 can be with It is structure as a whole.

In one embodiment, hot water is discharged for the ease of grasping the cold water temperature of cold water and grasping from hot-water line 841 Hot water temperature, be adjust water outlet (hot water) water temperature either according to the electric current of lower water temperature electromagnetic induction coil 6 realize power Control provides prerequisite, therefore the first temperature sensor for detecting inlet water temperature is equipped in cold water pipe 723, in hot-water line The second temperature sensor for detecting discharge hot water water temperature is equipped in 841.

The induction heating apparatus of the utility model at work, the electromagnetic induction coil 6 and external high frequency alternating current It is electrically connected, will lead to 6 self-heating of electromagnetic induction coil due to electromagnetic induction coil 6 is there are certain resistance etc., if The electric energy that then will affect the induction heating apparatus when 6 calorific value of electromagnetic induction coil is excessively high is converted into the transfer efficiency of thermal energy, is This, the utility model is by insulating heat-conductive portion 4 by the heat transfer of 6 self-heating of electromagnetic induction coil in insulating heat-conductive portion 4 Cold water in side preheating cavity 5, absorb partial heat by cold water not only can also allow to 6 radiating and cooling of electromagnetic induction coil Cold water achievees the purpose that preheating.

Specifically, the utility model proposes induction heating apparatus working principle it is as follows: will be warm by cold water pipe 723 The cold water for spending t0 is sent into the first end of preheating cavity 5, and cold water flows to the second end of preheating cavity 5 from the first end of preheating cavity 5, In the process, since the heating conduction in insulating heat-conductive portion 4 is well so as to transmitting rapidly the heat of electromagnetic induction coil 6 To the cold water in preheating cavity 5, cold water is able to be preheating to temperature t1(temperature t1 higher than temperature t0) and can allow electromagnetic induction coil 6 Temperature reduced rapidly；Water by 5 the pre-heat treatment of preheating cavity enters the of heating chamber 3 from the second end of preheating cavity 5 Two ends, during the first end that heating chamber 3 is then flowed to from the second end of heating chamber 3, the water of temperature t1 with because of sense Should generate heat and temperature higher metallic heating body 1 contact is able to rapid heat temperature raising, then again from the first end of heating chamber 3 into Enter the first end of hot-water cavity, then reaches estimating temperature t2(temperature t2 from the discharge of the hot-water line 841 of the second end of hot-water cavity Hot water higher than temperature t1).It can be seen that the utility model is on the outside of heating chamber by being arranged preheating cavity, and cold water is allowed first to lead to It crosses preheating cavity and enters back into heating chamber, can at least generate the technical effect of following several respects:

1. being conducive to improve thermal energy conversion efficiency and improving heating efficiency.Electromagnetic induction line is absorbed by the cold water of preheating cavity The heat that circle 6 generates itself is cooled down by electromagnetic induction coil 6, not only cold water can be preheating to temperature t1 by temperature t0, Electromagnetic induction coil 6 is also reduced to surrounding heat dissipation the consumed energy of heat, and heating chamber heats the water of temperature t1 after preheating To preset temperature t2, compared to the cold water of temperature t0 is directly heated to preset temperature t2, not only heating efficiency faster, energy consumption more It is low, moreover it is possible to promote the transfer efficiency that electric energy is converted into thermal energy on the whole.

2. being conducive to improve the functional reliability of induction heating apparatus.Since the cold water by preheating cavity is to magnetic induction coil 6 carry out radiating and cooling, and 6 temperature of magnetic induction coil is lower to lead to magnetic induction coil 6 because temperature is excessively high, heat dissipation is bad to overcome The technical problem burnt；Also, the heat that magnetic induction coil 6 is distributed to surrounding reduces, to allow the machine of induction heating apparatus Device internal temperature reduces, and improves the functional reliability and job stability of induction heating apparatus entirety.

3. rotation section 91 is driven by water slug and rotates, spire 92 can generate heat that may be deposited in metal during rotation The foreign matters such as the scale of 1 outer surface of body are scraped, so that 1 outer surface of metallic heating body be made thoroughly to generate scale without chance, are reached The ultimate aim for preventing scale generation, not only can be improved the heat-exchange capacity of metallic heating body 1, can also thoroughly solve because The technical problem that scale causes electromagnetic induction coil 6 dry combustion method damage occur is generated on metallic heating body 1.

Applicant is using the technical effect for confirming technical solutions of the utility model by comparative test: using the applicant Induction heating apparatus (referred to as " comparison machine ") and this Shen of technical solution disclosed in applied for a patent CN 201721311626X Please involved in induction heating apparatus (referred to as " the application machine ") test as a comparison, wherein " comparison machine " and " the application The maximum power of machine " is 8 kilowatts, is heated using the cold water (25.2 DEG C of temperature) of identical cold water source, and set 45 DEG C of the hot water temperature of outflow.Respectively with 2 electric energy meter measurements " comparison machine " and " the application machine " institute consuming electric power；And in work 5 measurements are respectively taken every 3 minutes middle parts in " comparison machine " and " the application machine " respective electromagnetic induction coil during work Trip temperature measurement is clicked through, after work in 1 hour, just " comparison machine " measures respective electromagnetic induction with " the application machine " respectively Coil obtains 100 measured temperatures, and mean value is taken to obtain the surface temperature mean value of various electromagnetic induction coils respectively.Finally, it counts Obtain: " comparison machine " the surface temperature mean value of electromagnetic induction coil is 74.7 DEG C during the work time, and institute's consuming electric power is 5.43 degree；And the surface temperature mean value of " the application machine " electromagnetic induction coil during the work time is 41.5 DEG C, institute's consuming electric power Upper 3.48 degree.It can be seen that " the application machine " allows electromagnetism because having preheating cavity to carry out radiating and cooling to electromagnetic induction coil The surface temperature of induction coil is greatly reduced, and improves energy conversion efficiency, thus hot water outlet efficiency faster, required energy consumption more It is low, meet energy-saving and environment-friendly trend requirement.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of induction heating apparatus of high efficient and reliable characterized by comprising inside set the metallic heating body (1) of hot-water cavity；Set It is located at the isolation part (2) of metallic heating body (1) lateral surface, the medial surface of the isolation part (2) and the lateral surface of metallic heating body (1) Between have heating chamber (3)；The insulating heat-conductive portion (4) being made from a material that be thermally conductive, the insulating heat-conductive portion (4) are set in isolation part (2) lateral surface has preheating cavity (5) between the medial surface and isolation part (2) lateral surface in the insulating heat-conductive portion (4)；It is wrapped in absolutely The electromagnetic induction coil (6) of edge heat-conducting part (4) lateral surface；Wherein, hot-water cavity, metallic heating body (1), isolation part (2), heating chamber (3), two same ends of insulating heat-conductive portion (4) and preheating cavity (5) are respectively set to respective first end and the second end, The first end of the preheating cavity (5) is connected to cold water pipe (723), and the second of the second end connection heating chamber (3) of the preheating cavity (5) End, and the first end of heating chamber (3) is connected to the first end of hot-water cavity, the second end of the hot-water cavity is connected to hot-water line (841)；Rotation section (91) in the second end of heating chamber (3), is set in the spire of metallic heating body (1) lateral surface (92), an end of the spire (92) is fixedly linked with rotation section (91).

2. induction heating apparatus according to claim 1, which is characterized in that rotation section (91) are turbine or impeller.

3. induction heating apparatus according to claim 1, which is characterized in that insulating heat-conductive portion (4), isolation part (2) and metal The shape of heater (1) all can be round, oval or rectangular, and insulating heat-conductive portion (4), isolation part (2) and metal fever Body (1) central axis having the same.

4. induction heating apparatus according to claim 1, which is characterized in that metallic heating body (1) is stainless pipe, isolation Portion (2) is ceramic tube or plastic tube, and insulating heat-conductive portion (4) are silicon wafer pipe, glass tube or quartz ampoule, the pipe of metallic heating body (1) The caliber in the caliber < insulating heat-conductive portion (4) of the isolation part diameter < (2), and metallic heating body (1), isolation part (2) and insulating heat-conductive Portion (4) three coaxial arrangement.

5. induction heating apparatus according to claim 1, which is characterized in that be equipped in preheating cavity (5) for increasing from cold Water pipe (723) enters the cooling fin of contact area between the cold water and insulating heat-conductive portion (4) of preheating cavity (5), which fixes Inner sidewall in insulating heat-conductive portion (4).

6. induction heating apparatus according to claim 5, which is characterized in that cooling fin is one or more pieces, is in annulus or spiral shell Rotation is arranged on the inner sidewall of insulating heat-conductive portion (4).

7. induction heating apparatus according to claim 1, which is characterized in that further include the first end for making preheating cavity (5) Portion is not attached to first end that is logical and making heating chamber (3) and heat with the first end of heating chamber (3), the first end of hot-water cavity The first end in insulating heat-conductive portion (4), and cold water is arranged in the intake end cover that the first end of water cavity is connected, the intake end cover (723) are managed to be arranged on the intake end cover.

8. induction heating apparatus according to claim 7, which is characterized in that the length of metallic heating body (1) is less than isolation part (2) length, the first end of metallic heating body (1), the first end of the second end and isolation part (2), between the second end All have the notch (31) being located in heating chamber (3)；Intake end cover includes: the first end for being sealedly connected on insulating heat-conductive portion (4) First water guide cover (72) in portion, the first water guide cover (72) are interior between the cold water being connected with cold water pipe (723) and preheating cavity (5) Gap (721)；Lid closes the first water seal cover (73) in the first water guide cover (72) end；Sequentially pass through the first water seal cover (73), first First water guide tube (74) at the axial middle part of water guide cover (72), the lower end of first water guide tube (74) extend to heating chamber (3) Interior notch (31) simultaneously protrudes into the hot-water cavity of metallic heating body (1), and the lower end of first water guide tube (74) has first Inlet opening (741), first inlet opening (741) are located at the notch (31) in heating chamber (3) to the first inlet opening (741) and lack Mouth (31) connection.

9. induction heating apparatus according to claim 1, which is characterized in that further include the second end for making preheating cavity (5) Portion be connected with the second end of heating chamber (3) and make the second end of preheating cavity (5), heating chamber (3) the second end with The second end of hot-water cavity is not attached to logical water outlet end cap, which is arranged the second end in insulating heat-conductive portion (4), and Hot-water line (841) setting is covered in the water outlet.

10. induction heating apparatus according to claim 1, which is characterized in that water outlet end cap includes: to be sealedly connected on insulation to lead The second water guide cover (82) of the second end of hot portion (4), the second water guide cover (82) are equipped with for by the second end of preheating cavity (5) The hot water gap (821) that portion is connected with the second end of heating chamber (3)；Lid closes the second envelope in the second water guide cover (82) end Water cover (83)；Second water guide tube (84) at the axial middle part of the second water seal cover (83), the second water guide cover (82) is sequentially passed through, this Two water guide tubes (84) are the bobbin that two ends all have opening, and the wherein end setting of second water guide tube (84) is sent out in metal In hot-water cavity in hot body (1), another end of second water guide tube (84) is set as hot-water line (841).