CN204881181U - Fritting furnace for experiments - Google Patents
Fritting furnace for experiments Download PDFInfo
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- CN204881181U CN204881181U CN201520663592.5U CN201520663592U CN204881181U CN 204881181 U CN204881181 U CN 204881181U CN 201520663592 U CN201520663592 U CN 201520663592U CN 204881181 U CN204881181 U CN 204881181U
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Abstract
The utility model discloses a fritting furnace for experiments, including the heating module, the heating module is provided with threely at least, and each heating module is provided with a control circuit respectively, and control circuit all is coupled in detection module, and detection module is used for detecting sintering furnace temperature and exports sample voltage, and each control circuit is coupled and has been coupled master module respectively, and each master module provides the reference voltage that the amplitude is different, in arbitrary control circuit, when sample voltage is higher than reference voltage, heating module work that control corresponds, when the heating, temperature through detection module real -time detection compensates the output frequency channel of its heating, and output is higher when tentatively heating, but heating to the predetermined temperature before, reduces output one by one, prevents that the too high phenomenon that is difficult to the readjustment of temperature rise from taking place, has guaranteed heating efficiency simultaneously, has improved the heating precision greatly, has guaranteed experiment precision effect.
Description
Technical field
The utility model relates to a kind of experiment sintering furnace.
Background technology
Sintering furnace be one at high temperature, by heating module (heating wire or electric hot plate), inside is heated, make the mutual binding of ceramic green solid particle, grain growth, space (pore) and crystal boundary gradually reduce, and by the transmission of material, its cumulative volume shrinks, density increases, and finally becomes the stove and accessory with certain microstructural dense multicrystalline sintered body.When processing new material, in order to obtain preferably experimental data and an experiment effect, can be higher than general industry sintering furnace to the requirement of heating accuracy, particularly common heating sintering furnace exist temperature rise more high-leveled and difficult with readjustment situation, affect product effect quality, affect the accuracy of last experimental data, cause experimental result to occur deviation.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is the experiment sintering furnace providing a kind of degree of regulation high.
For achieving the above object, the utility model provides following technical scheme: a kind of experiment sintering furnace, comprise heating module, described heating module is at least provided with three, heating module described in each is respectively arranged with a control circuit, and described control circuit is all coupled to detection module, and described detection module is for detecting sintering in-furnace temperature and exporting sampled voltage, control circuit described in each couples and is coupled with base modules respectively, the reference voltage that base modules described in each provides amplitude different; In arbitrary control circuit, when sampled voltage is higher than reference voltage, control corresponding heating module work, when sampled voltage is lower than reference voltage, controls corresponding heating module and quit work.
By at least arranging three heating modules, make its power output can be at least three frequency ranges, so when heating, the temperature detected in real time by detection module is compensated the output frequency range that it heats, and when preliminary heating, power output is higher, but before being heated to predetermined temperature, successively reduce power output, prevent the too high phenomenon being difficult to adjust back of temperature rise from occurring, ensure that the efficiency of heating surface simultaneously, substantially increase heating accuracy, ensure that experimental precision effect.
The utility model can be set to further: described control circuit comprises comparator, and described comparator is for comparing the size of sampled voltage and reference voltage, and described comparator model is set to HJ6574.By being set to comparator, ensureing its response speed, being set to HJ6574, it is a high temperature general monolithic twin voltage comparator.Have that operating temperature range is wide, output voltage range is wide, supply voltage wide ranges and the feature such as quiescent dissipation is low.Adopt CMOS special warfare technology, there is high temperature applications expanding space, ensured device can under 180 DEG C of high temperature long-term reliably working continuously.
The utility model can be set to further: base modules described in each comprises the first resistance and the second resistance that are arranged in series, and the node that described first resistance and the second resistance couple provides reference voltage.Each base modules is provided with the first resistance and the second resistance, by arranging the resistance of the first resistance and the second resistance in each base modules, just can arrange the difference of each reference voltage, convert and show that this operating temperature arranging each heating module is interval, adaptability is stronger.
The utility model can be set to further: one end of the second resistance described in each mutually couples and is coupled with adjustable resistance with ground end.Such user just can regulate the size of reference voltage according to actual needs, and realizes the adjustment to the reference voltage of all base modules by an adjustable resistance, more rationally facilitates.
The utility model can be set to further: described first resistance and the second resistance and adjustable resistance are all set to metal oxidation resistance.The Standard resistance range of metal-oxide film resistor is this resistor of 1 Ω ~ 200k Ω is formed by the Surface disintegration deposition of the metal salt solution that can be hydrolyzed (as butter of tin and trichloride antimony) at red-hot glass or pottery.Along with the difference of manufacturing condition, the performance of resistor also has very big-difference.The main feature of this resistor is high temperature resistant, and operating temperature range is+140 ~ 235 DEG C and can excess load uses at short notice.Ensure that its resistance to elevated temperatures.
The utility model can be set to further: described heating module is set to heating wire.Lower compared to its power consumption of electric hot plate, be applicable to lower scope.
By adopting technique scheme, serve following effect compared to existing technology: by least arranging three heating modules, make its power output can be at least three frequency ranges, so when heating, the temperature detected in real time by detection module is compensated the output frequency range that it heats, when preliminary heating, power output is higher, but before being heated to predetermined temperature, successively reduce power output, prevent the too high phenomenon being difficult to adjust back of temperature rise from occurring, ensure that the efficiency of heating surface simultaneously, substantially increase heating accuracy, ensure that experimental precision effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model circuit diagram;
Fig. 3 position the utility model heating change curve map.
Reference numeral: 1a, support body; 2a, control panel; 3a, pressure gauge; 4a, burner hearth; 5a, chamber door; 11, first control circuit; 12, second control circuit; 13, the 3rd control circuit; 2, detection module; 31, the first base modules; 32, the second base modules; 33, the 3rd base modules.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the utility model embodiment is described further.
Sintering furnace as shown in Figure 1, temperature setting is carried out by the control panel on support body 1a, regulate the resistance of R3 in Fig. 2, the heating-up temperature that it can be regulated to preset, is provided with temperature sensor or thermistor in burner hearth 4a, for detecting temperature in burner hearth 4a, carry out Real-time Feedback, chamber door 5a is provided with rubber strip and burner hearth 4a realizes hermetically-sealed construction, makes its inner vacuum, ensure sintering effect, carry out internal pressure by pressure gauge and obtain display.
As shown in Figure 2, circuit part is described in detail, comprise heating module, described heating module is provided with three, be respectively the first heating wire, second heating wire and the 3rd heating wire, heating module described in each is respectively arranged with a control circuit, correspond to first control circuit 11, second control circuit 12 and the 3rd control circuit 13, described control circuit is all coupled to detection module 2, thermistor or temperature sensor can be set to, described detection module 2 is for detecting sintering in-furnace temperature and exporting sampled voltage, control circuit described in each couples and is coupled with base modules respectively, the reference voltage that base modules described in each provides amplitude different, base modules described in each comprises the first resistance and the second resistance that are arranged in series, the node that described first resistance and the second resistance couple provides reference voltage.Described first resistance and the second resistance and adjustable resistance are all set to metal oxidation resistance.One end of second resistance described in each mutually couples and is coupled with adjustable resistance with ground end.First base modules 31 comprises R11 and R12, the first corresponding reference voltage; Second base modules 32 comprises R21 and R22, corresponding second reference voltage; 3rd base modules 33 comprises R31 and R32, corresponding 3rd reference voltage; In arbitrary control circuit, when sampled voltage is higher than reference voltage, control corresponding heating module work, when sampled voltage is lower than reference voltage, controls corresponding heating module and quit work.
Each control circuit comprises comparator, described comparator is for comparing the size of sampled voltage and reference voltage, described comparator model is set to HJ6574, comparator output terminal is coupled with a light emitting diode, the negative electrode of light emitting diode is coupled with the base stage of NPN triode, and described NPN triode is coupled with bidirectional triode thyristor, and described bidirectional triode thyristor and heater strip are series in same external power source loop, when its conducting, heating wire works.
Composition graphs 2 is with reference to shown in Fig. 3, when heating is started, RL1, RL2, RL3 works simultaneously, so its power output is larger, the efficiency of heating surface is higher, when temperature rises to T1, RL1 drives corresponding controllable silicon cut-off because sampled voltage is greater than reference voltage that the first base modules 31 provides, keep RL2 and RL3 work, so the efficiency of heating surface reduces, when temperature is increased to T2, similarly RL2 quits work, RL3 works independently, the efficiency of heating surface is reduced further, break-make now with regard to control RL3 ensures its sintering temperature, so, the power of RL3 can much little than original heater strip power setting, also its efficiency of heating surface can be ensured, make it can not cause because temperature rise is too high being difficult to readjustment, affect precision.
The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an experiment sintering furnace, comprise heating module, it is characterized in that: described heating module is at least provided with three, heating module described in each is respectively arranged with a control circuit, described control circuit is all coupled to detection module, described detection module is for detecting sintering in-furnace temperature and exporting sampled voltage, and control circuit described in each couples and is coupled with base modules respectively, the reference voltage that base modules described in each provides amplitude different; In arbitrary control circuit, when sampled voltage is higher than reference voltage, control corresponding heating module work, when sampled voltage is lower than reference voltage, controls corresponding heating module and quit work.
2. a kind of experiment sintering furnace as claimed in claim 1, it is characterized in that: described control circuit comprises comparator, described comparator is for comparing the size of sampled voltage and reference voltage, and described comparator model is set to HJ6574.
3. a kind of experiment sintering furnace as claimed in claim 1, is characterized in that: base modules described in each comprises the first resistance and the second resistance that are arranged in series, and the node that described first resistance and the second resistance couple provides reference voltage.
4. a kind of experiment sintering furnace as claimed in claim 3, is characterized in that: one end of the second resistance described in each mutually couples and is coupled with adjustable resistance with ground end.
5. experiment sintering furnace as claimed in claim 4 a kind of, is characterized in that: described first resistance and the second resistance and adjustable resistance are all set to metal oxidation resistance.
6. the one experiment sintering furnace as described in claim 1 or 2 or 3 or 4 or 5, is characterized in that: described heating module is set to heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663592.5U CN204881181U (en) | 2015-08-29 | 2015-08-29 | Fritting furnace for experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663592.5U CN204881181U (en) | 2015-08-29 | 2015-08-29 | Fritting furnace for experiments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204881181U true CN204881181U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520663592.5U Expired - Fee Related CN204881181U (en) | 2015-08-29 | 2015-08-29 | Fritting furnace for experiments |
Country Status (1)
| Country | Link |
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| CN (1) | CN204881181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827444A (en) * | 2019-01-23 | 2019-05-31 | 深圳市能佳自动化设备有限公司 | A kind of control method, device and the computer readable storage medium of Multi-layer warming furnace |
-
2015
- 2015-08-29 CN CN201520663592.5U patent/CN204881181U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827444A (en) * | 2019-01-23 | 2019-05-31 | 深圳市能佳自动化设备有限公司 | A kind of control method, device and the computer readable storage medium of Multi-layer warming furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |