CN105934008A - High-low voltage electric heating module - Google Patents
High-low voltage electric heating module Download PDFInfo
- Publication number
- CN105934008A CN105934008A CN201610541627.7A CN201610541627A CN105934008A CN 105934008 A CN105934008 A CN 105934008A CN 201610541627 A CN201610541627 A CN 201610541627A CN 105934008 A CN105934008 A CN 105934008A
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- CN
- China
- Prior art keywords
- low pressure
- electrothermal module
- bar
- insulation
- ribbon heater
- 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.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
- H05B3/64—Heating elements specially adapted for furnaces using ribbon, rod, or wire heater
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- Resistance Heating (AREA)
Abstract
This invention provides a high-low voltage electric heating module, and relates to the field of electrothermal furnace. The module comprises a frame and a plurality of ribbon heaters; each ribbon heater is evenly bent into a plurality of sections; the bending parts of a plurality of sections are parallel with each other; the ends of a plurality of ribbon heaters are connected in series and in sequence; a plurality of ribbon heaters are stacked after being bent; at least three insulating porcelain strips are arranged between each two adjacent ribbon heaters and at the outer sides of two ribbon heaters located at the two ends; a plurality of insulating saw teeth are arranged on each insulating porcelain strip; the bending part of each section is clamped between two adjacent insulating saw teeth; the frame comprises at least one circle of rectangular frame; at least three pairs of parallel slots are fixedly connected in at least one circle of rectangular frame; at least three pairs of parallel slots are perpendicular to the rectangular frame; and two ends of each insulating porcelain strip are inserted in one pair of slots. The module provided by the application solves the technical problems that the electrothermal furnace is not easy to be maintained, the furnace needs to be stopped when being overhauled and the high voltage cannot be used in the prior art.
Description
Technical field
The present invention relates to muffle electric furnace technical field, especially relate to a kind of high-low pressure electrothermal module.
Background technology
Traditional fuel energy, has coal, oil, and Linesless charcoal and combustion gas etc., along with industry is continuous
Development, makes air pollution arrive the epoch of reform, along with large power, electrically firing equipment
Coming out, solve and want to change electricity, no fund, want to change gas, source of the gas construction cost is high, and source of the gas is not enough
Various contradictions Deng factors restriction production development.
But, existing muffle electric furnace, general power and rated voltage are certain, internal heating
Fixing, not easy-maintaining and change power, meanwhile, existing muffle electric furnace, after dispatching from the factory, is examined
Repairing relatively difficult, whole device is the most quick detachable, also needs to blowing out, delay heating when needing repairing
Time.
Based on this, the invention provides a kind of high-low pressure electrothermal module and ask to solve above-mentioned technology
Topic.
Summary of the invention
It is an object of the invention to provide a kind of high-low pressure electrothermal module, to solve in prior art
Muffle electric furnace exist not easy-maintaining, maintenance need blowing out and the technology of high-tension electricity can not be used
Problem.
The high-low pressure electrothermal module that the present invention provides, including framework and Duo Gen ribbon heater, every institute
State ribbon heater and be bent into multistage uniformly, parallel to each other between multistage kink；Many described electricity
The torrid zone is sequentially connected in series in end；
After many described ribbon heater bendings, stacking is placed；Between two adjacent described ribbon heaters with
And the outside being positioned at two described ribbon heaters at two ends is provided with at least three insulation porcelain bars；Extremely
Few three described insulation porcelain bars are each perpendicular to described kink；At least three described insulation porcelain bar edges
The length direction of described kink is evenly arranged, and wherein two described insulation porcelain bars are positioned at described curved
The two ends of folding part；It is provided with multiple insulation sawtooth, described in every section on every described insulation porcelain bar
Kink is installed between adjacent two described insulation sawtooth；
Described framework includes at least one circle rectangle frame, and the inside of at least one described rectangle frame of circle is affixed
Having at least three to slot parallel to each other, at least three are each perpendicular to described rectangle to described slot
Frame；The two ends of every described insulation porcelain bar are inserted in a pair slot respectively.
Optionally, the surface of described framework and ribbon heater is all done by nanometer insulation meterial and is insulated
Process.All use high-temperature resistant nano insulant that insulation is set on the surface of framework and ribbon heater
Layer, carries out insulation processing protection, after insulation processing has been done on whole framework and surface, ribbon heater,
Use under high-tension electricity state and will not produce conduction and electrical phenomena of lying prone.Due to the guarantor at insulant
Protecting under effect, metal material can keep consistent rigidity in the case of 1100 degree, will not deform
Or destroy, be greatly saved materials cost.This insulating protection was already subjected to 42KV's
Proof voltage is tested, it is possible to the most breakdown under high-tension electricity, it is ensured that the safety of insulation protection.
Optionally, surface, described ribbon heater is reinforced concavo-convex zone face.This zone face designs
Can still keep certain rigidity when surface temperature reaches 1100 degree of high temperature, will not produce curved
Song or lodging.
Optionally, described framework is additionally provided with dismountable type handle.Use detachable movable hands
Handle, installs when entering stove for module and come out of the stove, and is easy to module propelling and pull-out is used, after being finished
Unload, be both not take up cavity space, do not damaged by high temperature barbecue.
Optionally, described ribbon heater is high rare earth alloy band.Temperature intensity is high, and corrosion resistance is strong,
Not corrosion, does not fall slag, is suitable under any mal-condition using, recovery rate 95%.
Optionally, by hydraulic die between many described ribbon heaters, disposal molding connects,
No-welding-seam interface.So arrange ribbon heater connect compare firm, there is no interface not easy fracture.
Optionally, the outermost end of the described ribbon heater being positioned at two ends is connected to resistant to elevated temperatures
Connecting line, described connecting line is provided with high temperature resistant interface.Spare interface facilitates multiple heated mould
Combination between block, the form of interface can be with the form of plug of disassembling and using, in existing electric elements
There is multiple high temperature resistant plug and socket, can need arbitrarily to select according to client.
Optionally, described slot be shaped as rectangular blocks, one of them length and width face is provided with
Bar-shaped trough, the opposite side relative with described bar-shaped trough is affixed with the inwall of described rectangle frame.So
Processing is easy in setting, and industrial processes is simple, also allows for the plug-in mounting of insulation porcelain bar.
Optionally, the two ends of every described bar-shaped trough are respectively arranged with through hole, every described absolutely
The two ends of edge porcelain bar are respectively provided with screwed hole, and the two ends of many described insulation porcelain bars are by resistant to elevated temperatures
Insulated bolt is fixed in described bar-shaped trough.The two ends insulation and obturation of slot, preferably passes through bolt
Etc. fixing insulation porcelain bar, it is simple to dismantle and change, prevent porcelain bar from coming off.
Optionally, described insulation sawtooth is square shaped teeth.Square sawtooth two ends are the most smooth, no
The surface of ribbon heater can be damaged, also will not destroy surface insulation layer, cause electric leakage conduction.
The described high-low pressure electrothermal module that the present invention provides, described ribbon heater is can heating power
Electrical equipment original paper, alloy make according to leading with electrician and heat transfer requirements, certain length is many
The requirement being connected serially to meet assigned voltage is adopted in root ribbon heater.In order to save space,
The each serpentine-like bending in ribbon heater, is then stacked together.Between two-layer resistor and
Resistor outermost after stacked, placed many insulation porcelain bars, had both played and prevented module
Occur conducting electricity and taking off electrical phenomena between the zone face of interior two ribbon heaters playing insulating effect, be also prevented from
Conduct electricity between the zone face of the ribbon heater of intermodule and take off electricity, also functioning to fixation simultaneously.Each
The insulation sawtooth that kink protrudes is clamped, and can fix ribbon heater, also by two sections of kinks every
Open, prevent from conducting electricity between kink, it is ensured that indeformable under the condition of high temperature, do not relax, but can fit
Answer freely stretching under high temperature and worst cold case.
By slot, many insulation porcelains are fixed, prevent it from moving.The most also facilitate heating module
Overall taking-up.The two ends insulation and obturation of slot, preferably fixes insulation porcelain bar by bolt etc.,
Readily accessible and change, and combine closely, indeformable after high temperature.Framework and slot by
Resistant to elevated temperatures material manufacture, only contacts with pottery bar, prevents conduction.
So, whole module is an overall heating module, can individually be placed on electric heating
Heat in stove, it is also possible to multiple heating modules serial or parallel connection together is placed on electric heating body of heater
In, by placing different numbers, change different outputs, adapt to different electrical power voltage,
I.e. can be applicable to high pressure and also apply be applicable to low pressure.Meanwhile, it is also convenient for maintenance, it is not necessary to blowing out,
Having only to during maintenance extract the heating damaged out, whole module is changed, very together
Convenient, decrease the raising of the operation cost that blowing out brings.
Based on this, the present invention, than original technology, has operation cost low, it is possible to adapt to difference
The power supply of voltage, it is provided that different heating power and facilitate the advantages such as maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical side of the prior art
Case, will make letter to the accompanying drawing used required in detailed description of the invention or description of the prior art below
Singly introduce, it should be apparent that, the accompanying drawing in describing below is some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is high-low pressure electrothermal module front view；
Fig. 2 is that the A of Fig. 1 is to sectional view；
Fig. 3 is that the B of Fig. 1 is to sectional view；
Fig. 4 is the partial schematic diagram that insulation porcelain bar coordinates with ribbon heater.
Reference:
1-high-low pressure electrothermal module；2-ribbon heater；3-kink；
4-insulation porcelain bar；5-insulate sawtooth；6-rectangle frame；
7-slot.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, aobvious
So, described embodiment is a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work
The every other embodiment obtained under premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score,
Orientation or the position of the instruction such as "left", "right", " vertically ", " level ", " interior ", " outward " are closed
System, for based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and Jian
Change describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally,
Term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicate
Or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited,
Term " is installed ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixing even
Connect, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to
It it is electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
Embodiment one
Fig. 1 is high-low pressure electrothermal module front view；Fig. 2 is that the A of Fig. 1 is to sectional view；Fig. 3
For the B of Fig. 1 to sectional view；Fig. 4 is the partial schematic diagram that insulation porcelain bar coordinates with ribbon heater.
As Figure 1-4, a kind of high-low pressure electrothermal module, described height are provided in the present embodiment
Piezoelectricity thermal modules 1 includes Insulating frame and Duo Gen ribbon heater 2, and every described ribbon heater 2 is uniform
Be bent into multistage, parallel to each other between multistage kink 3；Many described ribbon heaters 2 exist
End is sequentially connected in series；
After many described ribbon heater 2 bendings, stacking is placed；Two adjacent described ribbon heaters 2
Between and the outside of two described ribbon heaters 2 being positioned at two ends be provided with at least three eradications
Edge porcelain bar 4；At least three described insulation porcelain bars 4 are each perpendicular to described kink 3；At least three
Insulation porcelain bar 4 described in root is evenly arranged along the length direction of described kink 3, wherein two institutes
State insulation porcelain bar 4 and be positioned at the two ends of described kink 3；It is all provided with on every described insulation porcelain bar 4
Being equipped with multiple insulation sawtooth 5, every section of described kink 3 is installed in the described insulation of adjacent two
Between sawtooth 5；
Described framework includes at least one circle rectangle frame 6, and at least one encloses the inside of described rectangle frame 6
Being connected with at least three to slot 7 parallel to each other, at least three are each perpendicular to institute to described slot 7
State rectangle frame 6；The two ends of every described insulation porcelain bar 4 are inserted in a pair slot 7 respectively.
Preferred described slot be shaped as rectangular blocks, one of them length and width face is provided with bar shaped
Groove, the opposite side relative with described bar-shaped trough is affixed with the inwall of described rectangle frame.So arrange
Being easy to processing, industrial processes is simple, also allows for the plug-in mounting of insulation porcelain bar.
Further, the two ends of every described bar-shaped trough are respectively arranged with through hole, every described absolutely
The two ends of edge porcelain bar are respectively provided with screwed hole, and the two ends of many described insulation porcelain bars are by resistant to elevated temperatures
Insulated bolt is fixed in described bar-shaped trough.
This heating module, described ribbon heater 2 be can the electrical equipment original paper of heating power, by alloy
Make and lead according to electrician and heat transfer requirements, many ribbon heaters of certain length are used series system
Connect with the requirement meeting assigned voltage.In order to save space, each ribbon heater 2 is serpentine-like
Bending, is then stacked together.Between two-layer resistor and stacked after resistor
Outermost, placed many insulation porcelain bars 4, had both played and has prevented two ribbon heaters 2 in module
Occur between zone face conducting electricity and taking off electrical phenomena playing insulating effect, also prevent the electric heating of intermodule
Conduct electricity and take off electricity between the zone face of band, make electric current only along the length direction following current of ribbon heater, with
Time also function to fixation.Each kink 3 insulation sawtooth 5 protruded is clamped, Ji Nenggu
Determine ribbon heater 2, also to be separated by two sections of kinks 3, prevent from conducting electricity between kink 3, it is ensured that
Under the condition of high temperature indeformable, do not relax, but adapt to freely stretching under high temperature and worst cold case
Contracting.
By slot 7, many insulation porcelain bars 4 are fixed, prevent it from moving.The most conveniently add
Thermal modules entirety is taken out.The two ends insulation and obturation of slot 7, is preferably fixed absolutely by bolt etc.
Edge porcelain bar 4, it is simple to dismantle and change, prevents porcelain bar from coming off, and combines closely, high temperature
The most indeformable.Framework and slot 7 are manufactured by resistant to elevated temperatures material, only contact with pottery bar,
Prevent conduction.
So, whole module is an overall heating module, can individually be placed on electric heating
Heat in stove, it is also possible to multiple heating modules are the most in series or in parallel is placed on muffle electric furnace
Internal, by placing different numbers, change different outputs, meanwhile, be also convenient for dimension
Repair, it is not necessary to blowing out, have only to during maintenance extract the heating damaged, whole module out
Change together, convenience very, decrease the raising of the operation cost that blowing out brings.
In the alternative of the present embodiment, described framework uses resistant to elevated temperatures 310S material to manufacture,
And all use high temperature resistant receiving on the surface of these resistant to elevated temperatures metal material surfaces and ribbon heater
Rice insulant arranges insulating barrier, carries out insulation processing protection, whole framework and surface, ribbon heater
After having done insulation processing, use under high-tension electricity state and will not produce conduction and electrical phenomena of lying prone,
Ensure the safety of whole module, do not have danger.Due to the protective effect at insulant
Under, metal material can keep consistent rigidity in the case of 1100 degree, will not deform or broken
Bad, it is greatly saved materials cost.This insulating protection was already subjected to the proof voltage of 42KV
Test, it is possible to the most breakdown under high-tension electricity, it is ensured that the safety of insulation protection.
It is additionally, since all metal surfaces of module and all makees insulation protection, in a high voltage state,
Body of heater can contact with zero distance with site operation personnel, and security reliability is strong.
Being additionally, since employing bending and stack, the power of many can arbitrarily increase combination, many
Root power can between 50KW-500KW independent assortment, take up room little.
In the alternative of the present embodiment, described framework is additionally provided with dismountable type handle.
Module pulls handle to arrange rationally, uses detachable movable handle, enters stove for module and goes out
Install during stove, be easy to module propelling and pull-out is used, unload after being finished, be both not take up cavity
Space, is not damaged by high temperature barbecue.
In the alternative of the present embodiment, described ribbon heater is high rare earth alloy band.
Preferably employing Ni-based evanohm, elevated temperature strength is high, and corrosion resistance is strong, and not corrosion is not fallen
Slag, is suitable under any mal-condition using, recovery rate 95%, and is easy to maintenance, only change
Need a few minutes, do not affect normal production.Wide cut foil is made beforehand through hydraulic tensioning technique,
Heating surface can be increased amass, save material cost about more than 40%, and the most variable when high temperature
Shape, increases elevated temperature strength, improves service life more than 5 times.
Such as Fig. 1-4, in the alternative of the present embodiment, surface, described ribbon heater is reinforced
Concavo-convex zone face.
The ribbon heater of concavo-convex zone face can use hydraulic die disposal molding, this zone face to set
Meter can still keep certain rigidity when surface temperature reaches 1100 degree of high temperature, will not produce
Bending or lodging.
In the alternative of the present embodiment, by resistant to elevated temperatures company between many described ribbon heaters
Wiring is connected.Further, the outermost end of the described ribbon heater being positioned at two ends is connected to
Resistant to elevated temperatures connecting line, described connecting line is provided with high temperature resistant interface.Or many described electricity
By hydraulic die between the torrid zone, disposal molding connects, no-welding-seam interface.
So arrange ribbon heater connect compare firm, there is no interface not easy fracture.Spare interface
Facilitating the combination between multiple heating module, the form of interface can be existing with the form of plug of disassembling and using
Some electric elements have multiple high temperature resistant plug and socket, can need arbitrarily to select according to client
With.
Such as Fig. 2, in the alternative of the present embodiment, described insulation sawtooth is square shaped teeth.
Square sawtooth two ends are the most smooth, will not damage the surface of ribbon heater, also will not
Destroy surface insulation layer, cause electric leakage conduction.
It is last it is noted that various embodiments above is only in order to illustrate technical scheme,
It is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments,
It will be understood by those within the art that: it still can be to described in foregoing embodiments
Technical scheme modify, or the most some or all of technical characteristic carried out equivalent replace
Change；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the present invention each
The scope of embodiment technical scheme.
Claims (10)
1. a high-low pressure electrothermal module, it is characterised in that described high-low pressure electrothermal module bag
Including framework and Duo Gen ribbon heater, every described ribbon heater is bent into multistage uniformly, and multistage bends
Between portion parallel to each other；Many described ribbon heaters are sequentially connected in series in end；
After many described ribbon heater bendings, stacking is placed；Between two adjacent described ribbon heaters with
And the outside being positioned at two described ribbon heaters at two ends is provided with at least three insulation porcelain bars；Extremely
Few three described insulation porcelain bars are each perpendicular to described kink；At least three described insulation porcelain bar edges
The length direction of described kink is evenly arranged, and wherein two described insulation porcelain bars are positioned at described curved
The two ends of folding part；It is provided with multiple insulation sawtooth, described in every section on every described insulation porcelain bar
Kink is installed between adjacent two described insulation sawtooth；
Described framework includes at least one circle rectangle frame, and the inside of at least one described rectangle frame of circle is affixed
Having at least three to slot parallel to each other, at least three are each perpendicular to described rectangle to described slot
Frame；The two ends of every described insulation porcelain bar are inserted in a pair slot respectively.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Insulation processing is all done by nanometer insulation meterial in the surface of framework and ribbon heater.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Surface, ribbon heater is reinforced concavo-convex zone face.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Dismountable type handle it is additionally provided with on framework.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Ribbon heater is high rare earth alloy band.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that many
By hydraulic die between described ribbon heater, disposal molding connects, no-welding-seam interface.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that be positioned at
The outermost end of the described ribbon heater at two ends is connected to resistant to elevated temperatures connecting line, described connecting line
On be provided with high temperature resistant interface.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Slot be shaped as rectangular blocks, one of them length and width face is provided with bar-shaped trough, with described bar shaped
The opposite side that groove is relative is affixed with the inwall of described rectangle frame.
High-low pressure electrothermal module the most according to claim 8, it is characterised in that every
The two ends of described bar-shaped trough are respectively arranged with through hole, and the two ends of every described insulation porcelain bar are respectively provided with
Screwed hole, the two ends of many described insulation porcelain bars are fixed on described by resistant to elevated temperatures insulated bolt
In bar-shaped trough.
High-low pressure electrothermal module the most according to claim 1, it is characterised in that described
Insulation sawtooth is square shaped teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541627.7A CN105934008B (en) | 2016-07-11 | 2016-07-11 | High-low voltage electric heating module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541627.7A CN105934008B (en) | 2016-07-11 | 2016-07-11 | High-low voltage electric heating module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105934008A true CN105934008A (en) | 2016-09-07 |
| CN105934008B CN105934008B (en) | 2022-12-06 |
Family
ID=56827923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610541627.7A Active CN105934008B (en) | 2016-07-11 | 2016-07-11 | High-low voltage electric heating module |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB333457A (en) * | 1928-10-23 | 1930-08-14 | British Thomson Houston Co Ltd | Improvements in and relating to electric furnaces |
| CN1039500A (en) * | 1988-05-20 | 1990-02-07 | 莫塞巴克制造公司 | The resistance grid that central authorities ventilate |
| CN101644536A (en) * | 2009-09-08 | 2010-02-10 | 丹阳新辉电炉制造有限公司 | Vacuum heating furnace for smelting spongy titanium and spongy zirconium |
| CN101944414A (en) * | 2010-08-09 | 2011-01-12 | 华中科技大学 | High-power pulse linear dummy load |
| CN203517974U (en) * | 2013-08-14 | 2014-04-02 | 深圳市联创电器实业有限公司 | Electric heater provided with heating unit with metal resistance straps, and heating unit of electric heater |
| CN204029505U (en) * | 2014-07-04 | 2014-12-17 | 上海鹰峰电子科技有限公司 | Belt Power Resistor |
| CN204787854U (en) * | 2015-07-13 | 2015-11-18 | 天津三元鼎盛科技有限公司 | Soft resistance wire heater device |
| CN205883612U (en) * | 2016-07-11 | 2017-01-11 | 季国民 | High -low pressure electric heating module |
-
2016
- 2016-07-11 CN CN201610541627.7A patent/CN105934008B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB333457A (en) * | 1928-10-23 | 1930-08-14 | British Thomson Houston Co Ltd | Improvements in and relating to electric furnaces |
| CN1039500A (en) * | 1988-05-20 | 1990-02-07 | 莫塞巴克制造公司 | The resistance grid that central authorities ventilate |
| CN101644536A (en) * | 2009-09-08 | 2010-02-10 | 丹阳新辉电炉制造有限公司 | Vacuum heating furnace for smelting spongy titanium and spongy zirconium |
| CN101944414A (en) * | 2010-08-09 | 2011-01-12 | 华中科技大学 | High-power pulse linear dummy load |
| CN203517974U (en) * | 2013-08-14 | 2014-04-02 | 深圳市联创电器实业有限公司 | Electric heater provided with heating unit with metal resistance straps, and heating unit of electric heater |
| CN204029505U (en) * | 2014-07-04 | 2014-12-17 | 上海鹰峰电子科技有限公司 | Belt Power Resistor |
| CN204787854U (en) * | 2015-07-13 | 2015-11-18 | 天津三元鼎盛科技有限公司 | Soft resistance wire heater device |
| CN205883612U (en) * | 2016-07-11 | 2017-01-11 | 季国民 | High -low pressure electric heating module |
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| Publication number | Publication date |
|---|---|
| CN105934008B (en) | 2022-12-06 |
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