CN107267729A - A kind of multistation vacuum drying oven is uniformly heated and temperature control system - Google Patents
A kind of multistation vacuum drying oven is uniformly heated and temperature control system Download PDFInfo
- Publication number
- CN107267729A CN107267729A CN201710307424.6A CN201710307424A CN107267729A CN 107267729 A CN107267729 A CN 107267729A CN 201710307424 A CN201710307424 A CN 201710307424A CN 107267729 A CN107267729 A CN 107267729A
- Authority
- CN
- China
- Prior art keywords
- heater
- sidewall
- temperature control
- bell jar
- vacuum drying
- 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
Links
- 238000001291 vacuum drying Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Uniformly heated and temperature control system the invention discloses a kind of multistation vacuum drying oven, including bell jar, it is characterized in that, there are some top heaters on the top of the inwall of the bell jar by the first bolt connection, the top heater centrally through the second bolt connection has central heater, the bell jar inside sidewalls have some the first side wall heaters by the 3rd bolt connection, the bell jar bottom sidewall has some second sidewall heaters by the 4th bolt connection, the top heater, central heater, the first side wall heater and second sidewall heater distinguish integrated K-type thermocouple, the K-type thermocouple is connected by compensating wire with PID temperature controllers one end, the PID temperature controllers other end by solid-state relay respectively with top heater, central heater, the first side wall heater is connected with second sidewall heater.Beneficial effect of the present invention：By PID temperature controller temperature controls, temperature control is accurate, so as to reach higher temperature homogeneity.
Description
Technical field
The present invention relates to vacuum drying oven technical field, it particularly relates to a kind of uniformly heating and the temperature control of multistation vacuum drying oven
System.
Background technology
The emergence and fast development of vacuum furnace, on the one hand come from industrial technology development the need for, be on the other hand by
There are a series of incomparable outstanding advantages of other heat treatments in vacuum heat：Prevent processed workpiece surface from aoxidizing,
Decarburization simultaneously has reduction derusting action, saves surface grinding process, so that the consumption saved material, saves process time；
Vacuum outgas is acted on, and improves material surface purity, improves fatigue strength, plasticity and the toughness of material, improves corrosion resistance；It is de-
Fat is acted on, and is removed residual grease, is improved product quality；Handle workpiece dangerous without hydrogen embrittlement, prevent that titanium and refractory metal surfaces are brittle；
Quenching distortion is small；Compared with controlled atmosphere generator, high-quality fuel gas source of the gas is not required to, accumulation of heat loss is small, and the thermal efficiency is high, saves energy
Source, can be achieved to be rapidly heated and fast cooling；The stability of vacuum heat treatment process and reproducible；Safe operation, automation
Degree is high, and working environment is good, pollution-free nuisanceless.
The heater element of vacuum drying oven is typically arranged in a circular formation, and for the relatively common stove of heating in vacuum, its heat transfer type only has
Radiation, does not conduct and convection current, and workpiece heating is slow under vacuum state, during especially less than less than 600 DEG C heating, and heating is more
Slowly, workpiece temperature has certain hysteresis with respect to the temperature of temperature-control heat couple.
The problem of in correlation technique, effective solution is not yet proposed at present.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of multistation vacuum drying oven uniformly heating and temperature control
System, can solve the problem that under vacuum state that workpiece heating is slow, and workpiece temperature has certain delayed with respect to the temperature of temperature-control heat couple
Phenomenon.
To realize above-mentioned technical purpose, the technical proposal of the invention is realized in this way：A kind of multistation vacuum drying oven is uniform
Heating and temperature control system, including bell jar, it is characterised in that the top of the inwall of the bell jar has some by the first bolt connection
Top heater, the top heater centrally through the second bolt connection has central heater, the bell jar inside sidewalls
There are some the first side wall heaters by the 3rd bolt connection, the bell jar bottom sidewall has some by the 4th bolt connection
Two side-wall heaters, the top heater, central heater, the first side wall heater and second sidewall heater difference are integrated
K-type thermocouple, the K-type thermocouple is connected by compensating wire with PID temperature controllers one end, the PID temperature controllers other end
It is connected respectively with top heater, central heater, the first side wall heater and second sidewall heater by solid-state relay
Connect.
Further, the top heater, central heater, the first side wall heater and second sidewall heater difference
Including heater strip fixed plate, fixed strip is welded with the heater strip fixed plate, the groove of the fixed strip has been embedded in armouring
Heater strip, the armouring heater strip is connected with K-type thermocouple.
Further, the heater strip fixed plate of the top heater, the first side wall heater and second sidewall heater
It is provided with double thermal insulation screen.
Further, the outer tube material of the armouring heater strip is stainless steel, and the filler of the armouring heater strip is oxygen
Change magnesium.
Further, the bell jar is provided with several observation windows.
Further, the bell jar periphery is provided with cooling water channel.
Beneficial effects of the present invention：By PID temperature controller temperature controls, temperature control is accurate, so as to reach that higher temperature is equal
Even property.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the bell jar of a kind of uniform heating of multistation vacuum drying oven described according to embodiments of the present invention and temperature control system
Structural representation；
Fig. 2 is that a kind of multistation vacuum drying oven described according to embodiments of the present invention is uniformly heated and the top of temperature control system adds
The structural representation of hot device；
Fig. 3 is that a kind of multistation vacuum drying oven described according to embodiments of the present invention is uniformly heated and the center of temperature control system adds
The structural representation of hot device；
Fig. 4 is the first side of a kind of uniform heating of multistation vacuum drying oven described according to embodiments of the present invention and temperature control system
The structural representation of wall heater and second sidewall heater；
Fig. 5 is the circuit of a kind of uniform heating of multistation vacuum drying oven described according to embodiments of the present invention and temperature control system
Figure；
Fig. 6 is that a kind of multistation vacuum drying oven described according to embodiments of the present invention is uniformly heated and the temperature control of temperature control system is former
Reason figure；
Fig. 7 is the uniformity of a kind of uniform heating of multistation vacuum drying oven described according to embodiments of the present invention and temperature control system
Measuring principle figure.
In figure：
1st, top heater；2nd, double thermal insulation screen；3rd, the first side wall heater；4th, observation window；5th, second sidewall heater；
6th, heater strip fixed plate；7th, cooling water channel；8th, bell jar；9th, central heater；10th, armouring heater strip；11st, K-type thermocouple；12、
PID temperature controllers；13rd, solid-state relay.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belongs to what the present invention was protected
Scope.
As shown in figs. 1-7, described a kind of multistation vacuum drying oven according to embodiments of the present invention is uniformly heated and temperature control system,
Including bell jar 8, it is characterised in that there are some top heaters 1 on the top of the inwall of the bell jar 8 by the first bolt connection,
The top heater 1 has central heater 9 centrally through the second bolt connection, and the inside sidewalls of bell jar 8 pass through the 3rd
Bolt connection has some the first side wall heaters 3, and the bottom sidewall of bell jar 8 has some second sidewalls by the 4th bolt connection
Heater 5, the top heater 1, central heater 9, the first side wall heater 3 and second sidewall heater 5 distinguish integrated K
Type thermocouple 11 is used for temperature control, and the K-type thermocouple 11 is connected by compensating wire with the one end of PID temperature controllers 12, the PID
The other end of temperature controller 12 by solid-state relay 13 respectively with top heater 1, central heater 9, the first side wall heater 3 and
Second sidewall heater 5 is connected.
In one particular embodiment of the present invention, the top heater 1, central heater 9, the first side wall heater
3 and second sidewall heater 5 include heater strip fixed plate 6 respectively, be welded with fixed strip in the heater strip fixed plate 6, it is described
The groove of fixed strip has been embedded in armouring heater strip 10, and the armouring heater strip 10 is connected with K-type thermocouple 11.
In one particular embodiment of the present invention, the top heater, the first side wall heater and second sidewall add
The heater strip fixed plate 6 of hot device is provided with double thermal insulation screen 2, is processed by double thermal insulation screen 2 using mirror finish plate, minute surface court
To armouring heater strip 10, it is easy to increase to reflect.
In one particular embodiment of the present invention, the outer tube material of the armouring heater strip 10 is stainless steel, the armour
The filler for filling heater strip 10 is magnesia, it is to avoid the vacuum discharge phenomenon under normal voltage 220V, extends service life；
It is luminous to be blocked by outer tube, it is to avoid the visible ray of heated object influenceed.
In one particular embodiment of the present invention, the bell jar 8 is provided with several observation windows 4, is easy to observe bell jar
Inner structure.
In one particular embodiment of the present invention, the periphery of bell jar 8 is provided with cooling water channel 7.
Understand for convenience the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical scheme is described in detail.
When specifically used, according to a kind of multistation vacuum drying oven of the present invention uniformly heating and temperature control system, heating
Device is divided into 4 areas, the area of side 2, the area of top 1 and the area of center 1, by the top heater 1, the and of the first side wall heater 3
Second sidewall heater 5 is bolted on the chamber inner wall of bell jar 8 by the first bolt, the 3rd bolt and the 4th respectively, in
Center heater 9 passes through the second center for being bolted to top heater 1, top heater 1, central heater 9, the first side wall
Heater 3 and second sidewall heater 5 distinguish integrated K-type thermocouple 11, and every group of heating unit realizes PID closed-loop controls, control
The temperature of respective warm area, sets temperature, the output control of PID temperature controllers 12 letter by the instrument face plate on PID temperature controllers 12 first
Number arrive solid-state relay 13, the break-make of the power supply of armouring heater strip 10 is then controlled by solid-state relay 13；By correcting every group 6
Design temperature realizes overall control temperature uniformity；K-type thermocouple 11 feeds back to PID temperature controllers 12 for measuring actual temperature,
PID temperature controllers 12 are according to the comparison of actual measurement temperature and design temperature, then adjust output signal and control top heater respectively
1st, central heater 9, the first side wall heater 3 and second sidewall heater 5, reach the effect of temperature control.
In summary, by means of the above-mentioned technical proposal of the present invention, by PID temperature controller temperature controls, temperature control is accurate, from
And reach higher temperature homogeneity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of multistation vacuum drying oven uniformly heating and temperature control system, including bell jar (8), it is characterised in that the bell jar (8)
There are some top heaters (1) on the top of inwall by the first bolt connection, the top heater (1) centrally through second
Bolt connection has central heater (9), and bell jar (8) inside sidewalls have some the first side walls to heat by the 3rd bolt connection
Device (3), bell jar (8) bottom sidewall has some second sidewall heaters (5), the top heating by the 4th bolt connection
Device (1), central heater (9), the first side wall heater (3) and the integrated K-type thermocouple of second sidewall heater (5) difference
(11), the K-type thermocouple (11) is connected by compensating wire with PID temperature controllers (12) one end, the PID temperature controllers (12)
The other end by solid-state relay (13) respectively with top heater (1), central heater (9), the first side wall heater (3) and
Second sidewall heater (5) is connected.
2. multistation vacuum drying oven according to claim 1 is uniformly heated and temperature control system, it is characterised in that the top adds
Hot device (1), central heater (9), the first side wall heater (3) and second sidewall heater (5) are fixed including heater strip respectively
Fixed strip is welded with plate (6), the heater strip fixed plate (6), the groove of the fixed strip has been embedded in armouring heater strip
(10), the armouring heater strip (10) is connected with K-type thermocouple (11).
3. multistation vacuum drying oven according to claim 2 is uniformly heated and temperature control system, it is characterised in that the top adds
The heater strip fixed plate (6) of hot device, the first side wall heater and second sidewall heater is provided with double thermal insulation screen (2).
4. multistation vacuum drying oven according to claim 2 is uniformly heated and temperature control system, it is characterised in that the armouring adds
The outer tube material of heated filament (10) is stainless steel, and the filler of the armouring heater strip (10) is magnesia.
5. multistation vacuum drying oven according to claim 1 is uniformly heated and temperature control system, it is characterised in that the bell jar
(8) several observation windows (4) are provided with.
6. the multistation vacuum drying oven according to claim any one of 1-5 is uniformly heated and temperature control system, it is characterised in that institute
State bell jar (8) periphery and cooling water channel (7) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307424.6A CN107267729A (en) | 2017-05-04 | 2017-05-04 | A kind of multistation vacuum drying oven is uniformly heated and temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307424.6A CN107267729A (en) | 2017-05-04 | 2017-05-04 | A kind of multistation vacuum drying oven is uniformly heated and temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107267729A true CN107267729A (en) | 2017-10-20 |
Family
ID=60074301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307424.6A Pending CN107267729A (en) | 2017-05-04 | 2017-05-04 | A kind of multistation vacuum drying oven is uniformly heated and temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107267729A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941002A (en) * | 2017-11-16 | 2018-04-20 | 石昌梅 | A kind of vacuum smelting furnace |
| CN109249029A (en) * | 2018-11-20 | 2019-01-22 | 桂林特邦新材料有限公司 | Sintering process method suitable for a double-body furnace low pressure sintering beading |
| WO2019128064A1 (en) * | 2017-12-29 | 2019-07-04 | 山东才聚电子科技有限公司 | Vacuum welding furnace with wide range of application |
| CN111261474A (en) * | 2020-01-29 | 2020-06-09 | 北方夜视技术股份有限公司 | Exhaust apparatus for high temperature uniformity in microchannel plate type photomultiplier fabrication |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020969A (en) * | 2007-03-20 | 2007-08-22 | 罗希文 | Sealed vacuum electrically heated furnace as internally heating continuous magnesium producing apparatus |
| CN102538462A (en) * | 2012-01-16 | 2012-07-04 | 陕西理工学院 | Experiment electric furnace with accurate temperature control |
| CN103937944A (en) * | 2014-05-06 | 2014-07-23 | 佛山市南海矽钢铁芯制造有限公司 | Vacuum annealing furnace |
| CN205897871U (en) * | 2016-07-05 | 2017-01-18 | 深圳市美格真空炉有限公司 | Vacuum furnace heating system |
-
2017
- 2017-05-04 CN CN201710307424.6A patent/CN107267729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020969A (en) * | 2007-03-20 | 2007-08-22 | 罗希文 | Sealed vacuum electrically heated furnace as internally heating continuous magnesium producing apparatus |
| CN102538462A (en) * | 2012-01-16 | 2012-07-04 | 陕西理工学院 | Experiment electric furnace with accurate temperature control |
| CN103937944A (en) * | 2014-05-06 | 2014-07-23 | 佛山市南海矽钢铁芯制造有限公司 | Vacuum annealing furnace |
| CN205897871U (en) * | 2016-07-05 | 2017-01-18 | 深圳市美格真空炉有限公司 | Vacuum furnace heating system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941002A (en) * | 2017-11-16 | 2018-04-20 | 石昌梅 | A kind of vacuum smelting furnace |
| WO2019128064A1 (en) * | 2017-12-29 | 2019-07-04 | 山东才聚电子科技有限公司 | Vacuum welding furnace with wide range of application |
| CN109249029A (en) * | 2018-11-20 | 2019-01-22 | 桂林特邦新材料有限公司 | Sintering process method suitable for a double-body furnace low pressure sintering beading |
| CN111261474A (en) * | 2020-01-29 | 2020-06-09 | 北方夜视技术股份有限公司 | Exhaust apparatus for high temperature uniformity in microchannel plate type photomultiplier fabrication |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171020 |