CN105682276A - Novel electromagnetic eddy current heating device - Google Patents

Novel electromagnetic eddy current heating device Download PDF

Info

Publication number
CN105682276A
CN105682276A CN201610253668.6A CN201610253668A CN105682276A CN 105682276 A CN105682276 A CN 105682276A CN 201610253668 A CN201610253668 A CN 201610253668A CN 105682276 A CN105682276 A CN 105682276A
Authority
CN
China
Prior art keywords
heating
electromagnetic
internal layer
layer
heat generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610253668.6A
Other languages
Chinese (zh)
Inventor
张欣翼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Xinming Energy Saving Technology Co Ltd
Original Assignee
Chengdu Xinming Energy Saving Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Xinming Energy Saving Technology Co Ltd filed Critical Chengdu Xinming Energy Saving Technology Co Ltd
Priority to CN201610253668.6A priority Critical patent/CN105682276A/en
Publication of CN105682276A publication Critical patent/CN105682276A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/36Coil arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

The invention discloses a novel electromagnetic eddy current heating device comprising at least one composite cylinder heating layer (1), at least one composite tube heating layer (2) and at least one electromagnetic coil layer (3). The electromagnetic coil layer (3) is arranged between the adjacent composite cylinder heating layer (1) and the composite tube heating layer (2). The side wall of the composite cylinder heating layer (1) comprises a first antirust internal layer (101) and a first electromagnetic eddy current heat generation layer (102) which are arranged from inside to outside in turn. A cavity (6) used for loading heated liquid is also formed at the internal wall of the first antirust internal layer (101). The composite tube heating layer (2) also comprises a second antirust internal layer (201) and a second electromagnetic eddy current heat generation layer (202) which are arranged from inside to outside in turn. A current carrying pipeline (5) is also formed at the internal wall of the second antirust internal layer (201). Electromagnetic induction utilization rate can be effectively enhanced, and the problems that composite tubes and composite cylinders are liable to be corroded or electromagnetic induction efficiency is low can be overcome.

Description

A kind of electromagnetic vortex heating unit
Technical field
The present invention relates to electromagnetism heating field, particularly relate to a kind of electromagnetic vortex heating unit.
Background technology
Usual people are to the heating of object, and one is combustion heating, and the burning such as coal, oil, gas equal energy source produces heat; Two is the principle utilizing and producing joule heating on resistance, utilizes resistance wire to convert electric energy to heat. These heats, only by the mode (thermal conduction, thermal convection, thermal radiation) of heat trnasfer, just can be delivered on the object needing heating, also just can reach the object of heating object. As to liquid heat, being the object by being heated by heating liquids is delivered in liquid to realize heating up such as steel absorb outside heat again. Therefore, they all belong to indirect heating mode. And based on electromagnetic inductive heating principle, to metal object heating and non-metallic objectsit is not a metal object type of heating, belong to direct heating mode exactly.
For non-metallic objectsit is not a metal object, adopt operating frequency be about 240MHZ and more than, the vibration of its interior molecules, atom every second can be made, rubbing makes for more than one hundred million times object self produce heat, such as microwave heating.
For metal object, then can adopt operating frequency at a few kilohertz (KHZ) to intermediate frequencies more than several hundred kilohertzs, high-frequency induction heating. Low frequency induction can also be adopted to heat, such as power frequency 50HZ etc. Utilizing electromagnetic induction principle, alternating-current on logical on telefault, can produce the alternating magnetic field of a same frequency, put into metallic object in magnetic field, and metal body surface can produce eddy current. Utilize eddying effect, by the resistance in metal object, convert thereof into heat energy. While eddy current, adding a small amount of heat such as hysteresis effect, skin effect, fringing effect, they make the temperature of metal object raise rapidly jointly, it is achieved the object of rapid heating.
But, use electromagnetic eddy liquid-heater at present, it is utilize to produce the container made of iron loading liquid Ru Shui of electromagnetic eddy, oil etc. mostly, then outside container made of iron around on electromagnetic heating coil as electromagnetic eddy liquid-heater, electromagnetic heat energy is produced at container body by electromagnetic induction, electromagnetic heat energy conduction liquid, it is achieved to the heating of liquid.
Existing well heater has the following disadvantages:
1, when adding hot water, if adopting non-non-corrosive material, water can bring corrosion problem;If employing non-corrosive material, electromagnetic induction efficiency is lower again;
2, to hold in body heater the heat interchanging area to liquid big not as holding body (multitube) heat interchanging area compared with little more single for equal quality liquid.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of electromagnetic vortex heating unit, the utilization ratio overcoming the solenoid when heating liquid is low, and multiple-unit tube, compound cylinder are perishable or the inefficient problem of electromagnetic induction.
It is an object of the invention to be achieved through the following technical solutions: a kind of electromagnetic vortex heating unit, comprising at least one compound cylinder zone of heating, at least one multiple-unit tube zone of heating and at least one insulated wire ring layer, described insulated wire ring layer is arranged between two multiple-unit tube zones of heating between two compound cylinder zones of heating between adjacent two compound cylinder zones of heating and multiple-unit tube zone of heating, adjacent and/or adjacent.
The sidewall of described compound cylinder zone of heating comprises the first antirust internal layer and the first electromagnetic eddy heat generating layers from the inside to the outside successively, the outer wall of described first antirust internal layer is fixedly connected with the interior wall seamless of the first electromagnetic eddy heat generating layers, and the inwall of described first antirust internal layer is also formed for loading by the cavity of heating liquid.
Described multiple-unit tube zone of heating also comprises the 2nd antirust internal layer and the 2nd electromagnetic eddy heat generating layers from the inside to the outside successively, the outer wall of described 2nd antirust internal layer is fixedly connected with the interior wall seamless of the 2nd electromagnetic eddy heat generating layers, and the inwall of described 2nd antirust internal layer also forms the liquid-filled pipe of this multiple-unit tube zone of heating.
Based on above-described embodiment, further, between described insulated wire ring layer and multiple-unit tube zone of heating, and between described insulated wire ring layer and compound cylinder zone of heating, it is equipped with thermofin.
Based on any one in above-described embodiment, further, described first antirust internal layer and the 2nd antirust internal layer at least comprise the one in the antirust internal layer of stainless steel and the antirust internal layer of copper product.
Based on any one in above-described embodiment, further, described first electromagnetic eddy heat generating layers and the 2nd electromagnetic eddy heat generating layers at least comprise the one in carbon steel electromagnetic eddy heat generating layers, silicon steel electromagnetic eddy heat generating layers and graphite electromagnetic eddy heat generating layers.
Based on any one in above-described embodiment, further, described 2nd antirust internal layer and the 2nd electromagnetic eddy heat generating layers are thin-walled tube.
Based on any one in above-described embodiment, further, the multiple-unit tube in described multiple-unit tube zone of heating forms heating member by coiling, and in this heating member, the outside surface of two adjacent rings multiple-unit tube contacts with each other.
The invention has the beneficial effects as follows:
(1) multiple-unit tube and the compound cylinder that the present invention proposes forms by antirust internal layer and the electromagnetic eddy heat generating layers of seamless compact siro spinning technology, overcome well heater to corrosion problem during liquid heat, ensure quality by heating liquid while, also assures that electromagnetic induction efficiency.
(2) insulated wire ring layer or be arranged between adjacent two compound cylinder zones of heating and multiple-unit tube zone of heating in the present invention, or it is arranged between adjacent two compound cylinder zone of heating, or between adjacent two multiple-unit tube zones of heating, the electromagnetic field of insulated wire ring layer both sides is all utilized by compound cylinder zone of heating or multiple-unit tube zone of heating, heat two zones of heating simultaneously, effectively improve the electromagnetic induction efficiency of insulated wire ring layer, reduce its electromagnetic induction amount of leakage, under same power, the heat of generation is bigger than non-sandwich type structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of electromagnetic eddy current heater of the present invention;
Fig. 2 is the structural representation of compound cylinder in the present invention;
Fig. 3 is the structural representation of multiple-unit tube in the present invention;
In figure, 1 compound cylinder zone of heating, 101 first antirust internal layers, 102 first electromagnetic eddy heat generating layers, 2 multiple-unit tube zones of heating, 201 the 2nd antirust internal layers, 201 the 2nd electromagnetic eddy heat generating layers, 3 insulated wire ring layers, 4 thermofins, 5 liquid-filled pipes, 6 cavitys.
Embodiment
The technical scheme of the present invention is described in further detail below in conjunction with accompanying drawing, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, the present invention proposes a kind of electromagnetic vortex heating unit, comprising at least one compound cylinder zone of heating 1, at least one multiple-unit tube zone of heating 2 and at least one insulated wire ring layer 3, described insulated wire ring layer 3 is arranged between two multiple-unit tube zones of heating 2 between two compound cylinder zones of heating 1 between adjacent two compound cylinder zones of heating 1 and multiple-unit tube zone of heating 2, adjacent and/or adjacent.
As shown in Figure 2, the sidewall of described compound cylinder zone of heating 1 comprises the first antirust internal layer 101 and the first electromagnetic eddy heat generating layers 102 from the inside to the outside successively, the described outer wall of the first antirust internal layer 101 is fixedly connected with the interior wall seamless of the first electromagnetic eddy heat generating layers 102, and the inwall of described first antirust internal layer 101 is also formed for loading by the cavity 6 of heating liquid. The antirust internal layer 101 of described first and the first electromagnetic eddy heat generating layers 102 are in close contact, and its implementation can adopt any a kind of complete processing, such as the mode etc. compressed.
In the present invention, the cavity 6 in compound cylinder zone of heating 1 makes double to make bin, and liquid enters cavity 6 after heating by multiple-unit tube, it is possible to be introduced in the liquid-filled pipe 5 that cavity 6 flows into multiple-unit tube again.
As shown in Figure 3, described multiple-unit tube zone of heating 2 also comprises the 2nd antirust internal layer 201 and the 2nd electromagnetic eddy heat generating layers 202 from the inside to the outside successively, the described outer wall of the 2nd antirust internal layer 201 is fixedly connected with the interior wall seamless of the 2nd electromagnetic eddy heat generating layers 202, and the inwall of described 2nd antirust internal layer 201 also forms the liquid-filled pipe 5 of this multiple-unit tube zone of heating 2. The antirust internal layer 201 of described the 2nd and the 2nd electromagnetic eddy heat generating layers 202 are in close contact, and its implementation also can adopt any a kind of complete processing, such as the mode etc. compressed.
Based on above-described embodiment, further, between described insulated wire ring layer 3 and multiple-unit tube zone of heating 2, and between described insulated wire ring layer 3 and compound cylinder zone of heating 1, it is equipped with thermofin 4.
Based on any one in above-described embodiment, further, described first antirust internal layer 101 and the 2nd antirust internal layer 201 at least comprise the one in the antirust internal layer of stainless steel (such as 304 stainless steels) and the antirust internal layer of copper product (such as TP2 copper).
Based on any one in above-described embodiment, further, described first electromagnetic eddy heat generating layers 102 and the 2nd electromagnetic eddy heat generating layers 202 at least comprise the one in carbon steel electromagnetic eddy heat generating layers, silicon steel electromagnetic eddy heat generating layers and graphite electromagnetic eddy heat generating layers.
When heating liquid, when particularly adding hot water, the first antirust internal layer 101 and the 2nd antirust internal layer 201 can play anticorrosion, to ensure water quality clean, avoids cavity 6 and the inner rustization of liquid-filled pipe 5 etc. to act on. First electromagnetic eddy heat generating layers 102 and the 2nd electromagnetic eddy heat generating layers 202, such as carbon steel, can play the effect producing electromagnetic eddy heat.
Based on any one in above-described embodiment, further, described 2nd antirust internal layer 201 and the 2nd electromagnetic eddy heat generating layers 202 are thin-walled tube.
Based on any one in above-described embodiment, further, the multiple-unit tube in described multiple-unit tube zone of heating 2 forms heating member by coiling, and in this heating member, the outside surface of two adjacent rings multiple-unit tube contacts with each other.
In the present invention, thermofin 4 can adopt insulating layer of asbestos, it is also possible to adopts the thermofin that the heat-stable materials such as glass heat insulation foam are made. Solenoid can with copper pipe, higher temperature line, electromagnetism twisted wire or enameled wire etc. Described insulated wire ring layer 3 comprises single group or plurality of electromagnetic coil.
As shown in Figure 1, Fig. 1 is an optimum embodiment of the present invention, this embodiment comprises a compound cylinder zone of heating 1, a multiple-unit tube zone of heating 2, two insulated wire ring layers 3 and three thermofins 4, form a sandwich type structure, in this embodiment, described two insulated wire ring layers 3 i.e. the first insulated wire ring layer 301 and the 2nd insulated wire ring layer 302, described i.e. the first thermofin 401 of three thermofins 4, 2nd thermofin 402 and the 3rd thermofin 403, in this embodiment, it is set to compound cylinder zone of heating 1 from inside to outside successively, 3rd thermofin 403, first insulated wire ring layer 301, 2nd thermofin 402, multiple-unit tube zone of heating 2, first thermofin 401 and the 2nd insulated wire ring layer 302. wherein, the first insulated wire ring layer 301 and the 2nd insulated wire ring layer 302 include two groups of solenoids. in this embodiment, first insulated wire ring layer 301 can heat compound cylinder zone of heating 1 and multiple-unit tube zone of heating 2 simultaneously, effectively improves the electromagnetic induction efficiency of the first insulated wire ring layer 301, reduces its electromagnetic induction amount of leakage, under same power, the heat of generation is bigger than non-sandwich type structure.
Certainly, the electromagnetism utilization ratio of the 2nd insulated wire ring layer 302 does not have the first insulated wire ring layer 301 high, in actual applications, can also set up according to temperature requirements or save, in addition, 2nd insulated wire ring layer 302 also can continue to set up multiple multiple-unit tube zone of heating 2 or compound cylinder zone of heating 1, and compound cylinder zone of heating 1 and multiple-unit tube zone of heating 2 interval are arranged, and increases heat exchange area with this, improves heating rate, promotes the utilization ratio of electromagnetic induction.
The present invention has broken traditional electric heating coil (resistance wire) and has generated heat mode, adopt most advanced magnetic field induction eddy heating for heating principle, namely electric current produces magnetic field by coil, in magnetic field, magnetic line of force is by making to produce in metallic object countless little eddy current during magnetic conductive metal material, make metallic substance heating at a high speed voluntarily itself, reach object temperature in heating of metal material bodies. So just greatly reducing scattering and disappearing of heat, it is to increase thermo-efficiency, therefore power savings is very remarkable, can reach 30%~75%. Because electromagnetism heating collar itself does not generate heat, and be adopt insulating material and high temperature cables manufacturing, so there is not the problem that the resistance wire as former electric heating coil is oxidized and shorten work-ing life at high operating temperatures, have long service life, temperature rise rate fast, the advantage such as need not keep in repair, decrease servicing time, reduce cost. Compare with resistance heater, when same volumetric water, the temperature rising-time of the present invention effectively shortens, use power reduces, in life-time service compound cylinder, the recirculated water of non-corroding, heating is cleaning, transparent, clean, the present invention had both ensured by the quality of heating liquid, turn improved electromagnetic induction efficiency.
A kind of electromagnetic vortex heating unit according to the present invention is described in an illustrative manner above with reference to accompanying drawing.But; those skilled in the art are to be understood that; for above-mentioned a kind of electromagnetic vortex heating unit proposed by the invention; various improvement can also be made on the basis not departing from content of the present invention; or wherein part technology feature is carried out equivalent replacement; within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention. Therefore, protection scope of the present invention should be determined by the content of appending claims.

Claims (6)

1. an electromagnetic vortex heating unit, it is characterized in that: comprise at least one compound cylinder zone of heating (1), at least one multiple-unit tube zone of heating (2) and at least one insulated wire ring layer (3), described insulated wire ring layer (3) is arranged between two multiple-unit tube zones of heating (2) between two compounds cylinder zone of heating (1) between adjacent two compounds cylinder zone of heating (1) and multiple-unit tube zone of heating (2), adjacent and/or adjacent;
The sidewall of described compound cylinder zone of heating (1) comprises the first antirust internal layer (101) and the first electromagnetic eddy heat generating layers (102) from the inside to the outside successively, the outer wall of described first antirust internal layer (101) is fixedly connected with the interior wall seamless of the first electromagnetic eddy heat generating layers (102), and the inwall of described first antirust internal layer (101) is also formed for loading by the cavity (6) of heating liquid;
Described multiple-unit tube zone of heating (2) also comprises the 2nd antirust internal layer (201) and the 2nd electromagnetic eddy heat generating layers (202) from the inside to the outside successively, the outer wall of described 2nd antirust internal layer (201) is fixedly connected with the interior wall seamless of the 2nd electromagnetic eddy heat generating layers (202), and the inwall of described 2nd antirust internal layer (201) also forms the liquid-filled pipe (5) of this multiple-unit tube zone of heating (2).
2. a kind of electromagnetic vortex heating unit according to claim 1, it is characterized in that: between described insulated wire ring layer (3) and multiple-unit tube zone of heating (2), and between described insulated wire ring layer (3) and compound cylinder zone of heating (1), it is equipped with thermofin (4).
3. a kind of electromagnetic vortex heating unit according to claim 1, it is characterised in that: described first antirust internal layer (101) and the 2nd antirust internal layer (201) at least comprise the one in the antirust internal layer of stainless steel and the antirust internal layer of copper product.
4. a kind of electromagnetic vortex heating unit according to claim 1, it is characterised in that: described first electromagnetic eddy heat generating layers (102) and the 2nd electromagnetic eddy heat generating layers (202) at least comprise the one in carbon steel electromagnetic eddy heat generating layers, silicon steel electromagnetic eddy heat generating layers and graphite electromagnetic eddy heat generating layers.
5. a kind of electromagnetic vortex heating unit according to claim 1, it is characterised in that: described 2nd antirust internal layer (201) and the 2nd electromagnetic eddy heat generating layers (202) are thin-walled tube.
6. a kind of electromagnetic vortex heating unit according to claim 1, it is characterised in that: the multiple-unit tube in described multiple-unit tube zone of heating (2) forms heating member by coiling, and in this heating member, the outside surface of two adjacent rings multiple-unit tube contacts with each other.
CN201610253668.6A 2016-04-22 2016-04-22 Novel electromagnetic eddy current heating device Pending CN105682276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610253668.6A CN105682276A (en) 2016-04-22 2016-04-22 Novel electromagnetic eddy current heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610253668.6A CN105682276A (en) 2016-04-22 2016-04-22 Novel electromagnetic eddy current heating device

Publications (1)

Publication Number Publication Date
CN105682276A true CN105682276A (en) 2016-06-15

Family

ID=56215520

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610253668.6A Pending CN105682276A (en) 2016-04-22 2016-04-22 Novel electromagnetic eddy current heating device

Country Status (1)

Country Link
CN (1) CN105682276A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106028492A (en) * 2016-06-29 2016-10-12 雷中喜 High-frequency electromagnetic induction heating device submersed into liquid, gas, or solid
CN113028692A (en) * 2021-03-31 2021-06-25 东北大学 Direct type electromagnetic induction heating heat pump defrosting device and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2810089Y (en) * 2005-02-07 2006-08-23 杨家华 Power frequency electric heater unit
CN201748649U (en) * 2010-07-28 2011-02-16 朱维宣 Inside and outside electromagnetic heating body
CN202928070U (en) * 2012-10-31 2013-05-08 无锡物华电子科技有限公司 Rapid heating device with electromagnetic heating
CN103249192A (en) * 2013-05-15 2013-08-14 曲颜发 Electromagnetic heating device and application thereof, and heater
CN104474903A (en) * 2014-10-31 2015-04-01 北京迈淩医疗技术发展有限公司 Electromagnetic heating apparatus and hemodialysis ultrapure water preparation system
CN205726496U (en) * 2016-04-22 2016-11-23 成都市新明节能科技有限公司 A kind of electromagnetic vortex heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2810089Y (en) * 2005-02-07 2006-08-23 杨家华 Power frequency electric heater unit
CN201748649U (en) * 2010-07-28 2011-02-16 朱维宣 Inside and outside electromagnetic heating body
CN202928070U (en) * 2012-10-31 2013-05-08 无锡物华电子科技有限公司 Rapid heating device with electromagnetic heating
CN103249192A (en) * 2013-05-15 2013-08-14 曲颜发 Electromagnetic heating device and application thereof, and heater
CN104474903A (en) * 2014-10-31 2015-04-01 北京迈淩医疗技术发展有限公司 Electromagnetic heating apparatus and hemodialysis ultrapure water preparation system
CN205726496U (en) * 2016-04-22 2016-11-23 成都市新明节能科技有限公司 A kind of electromagnetic vortex heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106028492A (en) * 2016-06-29 2016-10-12 雷中喜 High-frequency electromagnetic induction heating device submersed into liquid, gas, or solid
CN113028692A (en) * 2021-03-31 2021-06-25 东北大学 Direct type electromagnetic induction heating heat pump defrosting device and method

Similar Documents

Publication Publication Date Title
CN101886843B (en) Method and device for heating flowing fluid as well as heating equipment applying same
CN205726496U (en) A kind of electromagnetic vortex heater
CN105682276A (en) Novel electromagnetic eddy current heating device
CN106604433A (en) Electromagnetic eddy-current liquid heater
CN201473564U (en) Electromagnetic induction heating device
CN105783246A (en) Electromagnetic eddy current heating system
CN104053262B (en) Electromagnetic heating device and heating system
CN205678869U (en) A kind of compound cylinder and electromagnetic eddy liquid heater
CN205666976U (en) Compound pipe and electromagnetic eddy currents liquid heater
CN203744512U (en) Electromagnetic water heater
CN202188648U (en) Eddy-induction energy-saving heating device
CN206272884U (en) A kind of electromagnetic eddy liquid heater
CN206222700U (en) Finned Electromagnetic heat tube
CN201163099Y (en) Oil immersion type electromagnetic pipeline heater
CN109724443A (en) A kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange
CN204259194U (en) Zero radiation high-efficiency electrical heat energy energy converter
CN204559919U (en) Superaudio load coil assembly in a kind of pipe
CN207540415U (en) A kind of spiral horizontal fin formula finned tube using electromagnetism enhanced heat exchange
CN210861716U (en) Electromagnetic induction heating furnace capable of rapidly heating
CN108050832A (en) Energy-saving electrical furnace system
CN207936754U (en) A kind of single-screw embeds hot magnesium vacuum reduction stove in Exciting-simulator system electromagnetic induction
CN201514020U (en) Overclocking/variable frequency electromagnetic induction electronic water boiler
CN102607177A (en) Heat-conduction oil furnace heater
CN204535383U (en) A kind of high-frequency electromagnetic induction heated crucible
CN2842968Y (en) Electromagnetic induction heat-pipe

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160615

RJ01 Rejection of invention patent application after publication