CN107148096A - Electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate - Google Patents
Electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate Download PDFInfo
- Publication number
- CN107148096A CN107148096A CN201710519478.9A CN201710519478A CN107148096A CN 107148096 A CN107148096 A CN 107148096A CN 201710519478 A CN201710519478 A CN 201710519478A CN 107148096 A CN107148096 A CN 107148096A
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- CN
- China
- Prior art keywords
- press boards
- insulating press
- hot plate
- electric hot
- resistance wire
- 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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
Abstract
The invention discloses a kind of electric hot plate, including electric-heating assembly, electric-heating assembly includes upper insulating press boards, lower insulating press boards and resistance wire, resistance wire is located between insulating press boards and lower insulating press boards, electric hot plate also includes heat-conducting plate, cavity is provided with heat-conducting plate, electric-heating assembly is close in cavity and with cavity inner wall.The electrothermal plate structure is simple, compact, and surface temperature uniformity is good.The preparation method of the electric hot plate, including step one：Resistance wire is clamped between upper insulating press boards and lower insulating press boards；Step 2：Heat Conduction Material is uniformly cast in upper insulating press boards and lower insulating press boards periphery forms heat-conducting plate.The preparation method is easy to operate, and the electric hot plate surface temperature prepared has good uniformity.A kind of vacuum drying oven, including casing, casing are provided with vavuum pump, casing provided with the electric hot plate that multilayer is above-mentioned.The vacuum drying oven can carry out good heating degassing processing, it is ensured that follow-up welding quality before workpiece carries out laser welding.
Description
Technical field
The present invention relates to electroheat technology, be particularly suitable for use in heating degassing processing of the microwave device before laser welding, special
Refer to a kind of electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate.
Background technology
As all kinds of laser generators are to high-power, lighting and the development of economization, laser welding is due to energy source height
It is small that collection neutralizes heat affected area, meet high-quality, low consumption, efficiently, cleaning, the technology such as heat affected area is narrow, joint distortion is small, operation is flexible
Developing direction, and laser beam has the advantages that to weld in an atmosphere, can both make deep penetration welding to large-scale component, again can be with
Micro- shape part precision welding is carried out, its application prospect is boundless.Micro-group dress field is especially applicable to, closed or possess guarantor
Protect in the environment of atmosphere, in the closed container that thick film or thin film integrated circuit are encapsulated into cover plate and housing, play in severe ring
The effect of protection circuit in border, makes circuit possess the performances such as radioresistance, high pressure resistant, stability is good.Because laser welding possesses weldering
Connect performance good, stably, the advantages of process flexible, have in terms of the sealing welding that micro-group is filled and substitute traditional high current contact
The trend of parallel seam welding.
The encapsulation for being widely used in the microwave device of radar generally uses laser welding, is needed device before laser welding
Part, which is placed in vacuum drying oven, carries out heating degassing processing, by heat radiation by the heat transfer on electric hot plate to device, simultaneously
Vavuum pump is set to vacuumize vacuum drying oven, so as to reach the purpose for heating degasification to device.Therefore, simple clean, heating is equal
The good electric boiling plate of even property plays a crucial role in vacuum drying oven.
At present, the heating plate of vacuum drying oven is generally using the structure type disclosed in patent document CN103954117A, energy
It is enough to meet the generally not high occasion of uniformity requirement, but present inventor by substantial amounts of analysis, experiment and
Calculate and find, it requires that higher occasion can not be met for vacuum drying oven heating uniformity, because：Heat conductive insulating plate is heated it
After can occur warpage, the position at two ends is due to outer case bending angle（It is right angle in diagram, can not at outer case bending during actual processing
Form fillet with can avoiding）Influence, heat conductive insulating plate can not be brought into close contact with resistance wire, cause the temperature of electric heating plate surface equal
Even property is not high, and with the increase of use time, this phenomenon is more obvious.In addition, in the technical scheme, resistance wire uses spiral
Structure is wound on filament plate, and effective length and the middle part around filament plate both ends resistance wire have nuance, to a certain extent
Electric hot plate surface temperature uniformity can be influenceed；The heat that resistance wire is produced finally needs to distribute by shell and cover plate, but
It is the position that cover plate is overlapped with shell（Left and right ends on the upside of electric hot plate in figure）Thickness is thicker, and electric heating can be also influenceed to a certain extent
The temperature homogeneity of plate.With the continuous progress of technical merit, welding workpiece is more and more accurate, the heating side of current vacuum drying oven
Formula can not meet requirement.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art there is provided a kind of simple in construction, compact, surface
The good electric hot plate of temperature homogeneity.
Further, the present invention provides a kind of preparation method of above-mentioned electric hot plate.
Further, the present invention provides a kind of vacuum drying oven containing above-mentioned electric hot plate.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of electric hot plate, including electric-heating assembly, the electric-heating assembly include upper insulating press boards, lower insulating press boards and resistance wire, institute
State resistance wire to be located between the upper insulating press boards and the lower insulating press boards, electric hot plate also includes heat-conducting plate, the heat conduction
Cavity is provided with plate, the electric-heating assembly is close in the cavity and with cavity inner wall.
It is used as the further improvement of above-mentioned technical proposal：
Uniform groove is provided between the upper insulating press boards and the lower insulating press boards, the resistance wire is in the uniform groove.
The cross section of the resistance wire is circle, and the uniform groove includes two half slots, and two half slots are divided into institute
State on insulating press boards and the lower insulating press boards.
The S-shaped arrangement of uniform groove.
The resistance wire is provided with ceramic electrode in wire locations.
The cavity wall of cavity uniform thickness everywhere.
A kind of preparation method of above-mentioned uniform electric hot plate, comprises the following steps：
Step one：Resistance wire is clamped between upper insulating press boards and lower insulating press boards；
Step 2：Heat Conduction Material is uniformly cast in upper insulating press boards and lower insulating press boards periphery forms the heat-conducting plate.
A kind of vacuum drying oven, including casing, the casing are provided with vavuum pump, provided with above-mentioned equal of multilayer in the casing
Even electric hot plate.
Compared with prior art, the advantage of the invention is that：Electric hot plate disclosed by the invention, using heat-conducting plate by resistance wire
The heat derives of generation, due to being provided with cavity in heat-conducting plate, upper insulating press boards, lower insulating press boards and cavity inner wall are closely pasted
Close, resistance wire is located between upper insulating press boards, lower insulating press boards, simple in construction, compact, during use insulation can press
Plate, lower insulating press boards are integrally remained with resistance wire and are brought into close contact, it is to avoid upper insulating press boards, lower insulating press boards are heated to be stuck up
It is bent, it is ensured that the uniformity of electric hot plate surface temperature.
The preparation method of electric hot plate disclosed by the invention, upper insulating press boards, lower insulation are uniformly cast in using Heat Conduction Material
Pressing plate periphery forms the mode of heat-conducting plate, easy to operate, ensure that tight with upper insulating press boards, lower insulating press boards inside heat-conducting plate
It is closely connected to close, and then ensure that upper insulating press boards, lower insulating press boards and resistance wire are brought into close contact, the electric hot plate surface temperature prepared
Have good uniformity.
Vacuum drying oven disclosed by the invention, containing above-mentioned electric hot plate, thus is likewise supplied with above-mentioned advantage.
Brief description of the drawings
Fig. 1 is the structural representation of the electric hot plate of the present invention.
Fig. 2 is the partial enlargement structural representation of the electric hot plate of the present invention.
Fig. 3 is the structural representation of the resistance wire in the present invention.
Fig. 4 is the structural representation of the vacuum drying oven of the present invention.
Each label is represented in figure：1st, heat-conducting plate；11st, cavity；2nd, upper insulating press boards；3rd, lower insulating press boards；4th, resistance wire；5、
Uniform groove；51st, half slot；6th, casing；7th, vavuum pump.
Embodiment
The present invention is described in further detail below in conjunction with Figure of description and specific embodiment.
Embodiment one
As shown in Figure 1, Figure 2 and Figure 3, the electric hot plate of the present embodiment, including electric-heating assembly, electric-heating assembly include upper insulating press boards 2,
Lower insulating press boards 3 and resistance wire 4, resistance wire 4 are located between insulating press boards 2 and lower insulating press boards 3, and electric hot plate also includes leading
Cavity 11 is provided with hot plate 1, heat-conducting plate 1, electric-heating assembly is close in cavity 11 and with the inwall of cavity 11.Wherein, upper insulation
Pressing plate 2, lower insulating press boards 3 can use micarex, and resistance wire 4 can use chrome-nickel, and the material of heat-conducting plate 1 is preferred to use aluminium,
With good heat conductivility, and it is easily processed into the liquid that can be poured.
The electric hot plate of the present invention, the heat derives for being produced resistance wire 4 using heat-conducting plate 1, due to being provided with heat-conducting plate 1
Cavity 11, upper insulating press boards 2, lower insulating press boards 3 are brought into close contact with the side wall of cavity 11, resistance wire 4 located at upper insulating press boards 2, under
It is simple in construction, compact between insulating press boards 3, insulating press boards 2, the entirety of lower insulating press boards 3 and resistance wire can be made during use
4 remain and are brought into close contact, it is to avoid upper insulating press boards 2, lower insulating press boards 2 are heated to occur warpage, it is ensured that electric hot plate surface temperature
Uniformity.
Embodiment two
The preparation method of above-mentioned electric hot plate, comprises the following steps：
Step one：Resistance wire 4 is clamped between upper insulating press boards 2 and lower insulating press boards 3；
Step 2：Heat Conduction Material is uniformly cast in upper insulating press boards 2 and the lower periphery of insulating press boards 3 forms heat-conducting plate 1.
As further preferred technical scheme, uniform groove 5, resistance are provided between upper insulating press boards 2 and lower insulating press boards 3
Silk 4 is in uniform groove 5.The structure on filament plate is wound in compared to existing use resistance wire 4, the present invention need not set wrapping wire
Plate, and upper insulating press boards 2, lower insulating press boards 3 can be ensured the effective length of resistance wire 4 is consistent everywhere, upper insulating press boards 2, lower insulation
Each several part of the pressing plate 3 in addition to uniform groove 5 is brought into close contact, and can avoid producing the trickle temperature difference between the two.
In the present embodiment, the cross section of resistance wire 4 is circle, and uniform groove 5 includes two half slots 51, two half slots 51
It is divided on insulating press boards 2 and lower insulating press boards 3.Two half slots 51 are respectively on upper insulating press boards 2 and lower insulating press boards 3
Arranged in identical S types.It is closer that resistance wire 4 is arranged, then the uniformity of electric hot plate surface temperature is better.
In the preparation, first resistance wire 4 can be arranged in the half slot 51 on lower insulating press boards 3, then presses upper insulation
Plate 2 aligns accurate pressure afterwards with lower insulating press boards 3, is finally poured again.
In the present embodiment, resistance wire 4 is provided with ceramic electrode in wire locations（Not shown in figure）, electricity is drawn when being easy to pour
Hinder silk 4.
In the present embodiment, the cavity wall of cavity 11 uniform thickness everywhere advantageously ensures that the uniformity of electric hot plate surface temperature.
Embodiment three
As shown in figure 4, the vacuum drying oven of the present embodiment, including casing 6, casing 6, which is provided with vavuum pump 7, casing 6, is provided with multilayer
Above-mentioned electric hot plate.
In use, workpiece to be baked is put into casing 6, oven door is closed, and vavuum pump 7 is opened, starts to take out very baking oven
Do-nothing operation, electric hot plate is initially powered up heating, after design temperature is reached in baking oven, keeps design temperature to setting time, baking
Terminate, treat that oven temperature is down to normal temperature, vavuum pump 7 is stopped, toward casing 6 in be filled with inert gas, unlatching vacuum drying oven
Door, takes out workpiece.
Vacuum drying oven disclosed by the invention, containing above-mentioned electric hot plate, thus is likewise supplied with above-mentioned advantage, can be carried out in workpiece
Before laser welding, good heating degassing processing is carried out, it is ensured that follow-up welding quality.
Although the present invention is disclosed above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, in the case where not departing from technical solution of the present invention scope, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (8)
1. a kind of electric hot plate, including electric-heating assembly, the electric-heating assembly include upper insulating press boards（2）, lower insulating press boards（3）And electricity
Hinder silk（4）, the resistance wire（4）It is located in the upper insulating press boards（2）With the lower insulating press boards（3）Between, its feature exists
In：Electric hot plate also includes heat-conducting plate（1）, the heat-conducting plate（1）It is interior to be provided with cavity（11）, the electric-heating assembly is located at the cavity
（11）Interior and and cavity（11）Inwall is close to.
2. electric hot plate according to claim 1, it is characterised in that：The upper insulating press boards（2）With the lower insulating press boards
（3）Between be provided with uniform groove（5）, the resistance wire（4）Located at the uniform groove（5）It is interior.
3. electric hot plate according to claim 2, it is characterised in that：The resistance wire（4）Cross section for circle, it is described
Cloth groove（5）Including two half slots（51）, two half slots（51）It is divided into the upper insulating press boards（2）With the lower insulation pressure
Plate（3）On.
4. the electric hot plate according to Claims 2 or 3, it is characterised in that：The uniform groove（5）S-shaped arrangement.
5. electric hot plate according to any one of claim 1 to 3, it is characterised in that：The resistance wire（4）In wire locations
Provided with ceramic electrode.
6. electric hot plate according to any one of claim 1 to 3, it is characterised in that：The cavity（11）Cavity wall everywhere
Uniform thickness.
7. a kind of preparation method of the electric hot plate any one of claim 1 to 6, it is characterised in that：Comprise the following steps：
Step one：By resistance wire（4）It is clamped in insulating press boards（2）With lower insulating press boards（3）Between；
Step 2：Heat Conduction Material is uniformly cast in upper insulating press boards（2）With lower insulating press boards（3）Periphery forms the heat-conducting plate
（1）.
8. a kind of vacuum drying oven, including casing（6）, the casing（6）It is provided with vavuum pump（7）, it is characterised in that：The casing
（6）The interior electric hot plate provided with any one of multilayer claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519478.9A CN107148096A (en) | 2017-06-30 | 2017-06-30 | Electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519478.9A CN107148096A (en) | 2017-06-30 | 2017-06-30 | Electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107148096A true CN107148096A (en) | 2017-09-08 |
Family
ID=59785789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519478.9A Pending CN107148096A (en) | 2017-06-30 | 2017-06-30 | Electric hot plate and preparation method thereof and the vacuum drying oven containing electric hot plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107148096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125509A (en) * | 2019-04-10 | 2019-08-16 | 浙江登新科技有限公司 | Heating structure in reflow machine |
| CN110530543A (en) * | 2019-07-23 | 2019-12-03 | 上海卫星装备研究所 | Closure assembly is heated in vacuum degassing suitable for aerospace product |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203722842U (en) * | 2013-12-11 | 2014-07-16 | 黄昆昆 | PTC heater |
| CN103954117A (en) * | 2014-04-01 | 2014-07-30 | 中国电子科技集团公司第四十八研究所 | Electric heating plate for vacuum drying oven |
| CN203810717U (en) * | 2011-06-21 | 2014-09-03 | 贝洱两合公司 | Heat exchanger |
| CN203912216U (en) * | 2014-06-03 | 2014-10-29 | 上海帕克热敏陶瓷有限公司 | PTC heater for new energy electric vehicle |
| CN203912229U (en) * | 2014-06-03 | 2014-10-29 | 上海帕克热敏陶瓷有限公司 | Tubular PTC constant-current electrical heating tube for heating liquid |
| CN205232479U (en) * | 2015-12-11 | 2016-05-11 | 上海帕克热敏陶瓷有限公司 | PTC electrothermal tube |
-
2017
- 2017-06-30 CN CN201710519478.9A patent/CN107148096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203810717U (en) * | 2011-06-21 | 2014-09-03 | 贝洱两合公司 | Heat exchanger |
| CN203722842U (en) * | 2013-12-11 | 2014-07-16 | 黄昆昆 | PTC heater |
| CN103954117A (en) * | 2014-04-01 | 2014-07-30 | 中国电子科技集团公司第四十八研究所 | Electric heating plate for vacuum drying oven |
| CN203912216U (en) * | 2014-06-03 | 2014-10-29 | 上海帕克热敏陶瓷有限公司 | PTC heater for new energy electric vehicle |
| CN203912229U (en) * | 2014-06-03 | 2014-10-29 | 上海帕克热敏陶瓷有限公司 | Tubular PTC constant-current electrical heating tube for heating liquid |
| CN205232479U (en) * | 2015-12-11 | 2016-05-11 | 上海帕克热敏陶瓷有限公司 | PTC electrothermal tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125509A (en) * | 2019-04-10 | 2019-08-16 | 浙江登新科技有限公司 | Heating structure in reflow machine |
| CN110530543A (en) * | 2019-07-23 | 2019-12-03 | 上海卫星装备研究所 | Closure assembly is heated in vacuum degassing suitable for aerospace product |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170908 |
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| WD01 | Invention patent application deemed withdrawn after publication |