CN104713218A - Accurate temperature-control electric heating jacket - Google Patents
Accurate temperature-control electric heating jacket Download PDFInfo
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- CN104713218A CN104713218A CN201310695367.5A CN201310695367A CN104713218A CN 104713218 A CN104713218 A CN 104713218A CN 201310695367 A CN201310695367 A CN 201310695367A CN 104713218 A CN104713218 A CN 104713218A
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- resistance
- triode
- electric heating
- diode
- accurate temperature
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Abstract
The invention discloses an accurate temperature-control electric heating jacket. The accurate temperature-control electric heating jacket comprises an electric heating jacket body, a control circuit and a temperature measuring module. The temperature measuring module is connected with the input end of the control circuit through a flexible data line. The control end of the control circuit is connected with a heating module arranged below a heating hole of the electric heating jacket body. The temperature measuring module comprises a thermosensitive diode. According to the accurate temperature-control electric heating jacket, as the thermosensitive diode with the small size is arranged in heated drug liquid, the temperature of the temperature point where the thermosensitive diode is located can be accurately measured, and accurate temperature control can be achieved; as the temperature measuring module is connected with the control circuit through the flexible data line, the electric heating jacket can be suitable for various heating utensils, and inconvenience caused by thermometer replacement is reduced.
Description
Technical field
The present invention relates to a kind of electric heater unit, specifically a kind of accurate temperature controlling electric heating cover.
Background technology
At present, although the widely used heating jacket in laboratory can realize electron temperature-control function, but they can only control the temperature of heating module, because internal fluid heat conduction is uneven, the temperature of heating module is often larger with medicine temperature difference, so, this heating jacket artificially adjusting the temperature of heating module by observing thermometer, accurately cannot control the temperature of added medicine of a warm nature product, cause heating-up temperature inaccuracy, easy generation side reaction makes product impure, even causes danger.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, the invention provides a kind of accurate temperature controlling electric heating cover, it can not only accurately measure the temperature of heating medicine, and automatically can control the temperature of heating medicine.
The present invention solves the technical scheme that its technical problem takes: a kind of accurate temperature controlling electric heating cover, comprise electric heating cover and control circuit, it is characterized in that, also comprise temperature measurement module, described temperature measurement module is connected with the input of control circuit by data wire, and the control end of described control circuit is connected with the heating module be arranged on below electric heating cover bottoming hole.
Preferably, described temperature measurement module comprises thermal diode.
Preferably, described heating module comprises heating resistor.
Preferably, described data wire adopts flexible data line.
Further, described control module comprises thermal diode D1, described control circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, adjustable resistance RW1, adjustable resistance RW2, diode D2, triode Q1, triode Q2, triode Q3 and operational amplifier A 1, and described heating module comprises heating resistor RL; The negative pole of described thermal diode D1 is connected with one end of one end of resistance R1, adjustable resistance RW1 and the positive pole of diode D2, the other end of described adjustable resistance RW1 is connected with adjustable end one end with resistance R2, and the other end of described resistance R2 is connected with the base stage of one end of resistance R3 and triode Q1; The colelctor electrode of described triode Q1 is connected with the inverting input of the negative pole of diode D2 and operational amplifier A 1, and the emitter stage of triode Q1 is connected with one end of resistance R4; The in-phase input end of described operational amplifier A 1 is connected with the adjustable end of adjustable resistance RW2, and output is connected with one end of resistance R7; The two ends of described adjustable resistance RW2 are connected with one end of resistance R5 and one end of resistance R6 respectively, the other end of described resistance R7 is connected with the base stage of triode Q2, the emitter stage of described triode Q2 is connected with the base stage of triode Q3, and the emitter stage of described triode Q3 is connected with one end of heating resistor RL; The other end of described resistance R1, the other end of resistance R5, the positive power source terminal of operational amplifier A 1, the colelctor electrode of triode Q2 access 15V power supply terminal respectively with the colelctor electrode of triode Q3 and are connected, and the other end of the positive pole of described thermal diode D1, the other end of resistance R3, resistance R4, the other end of resistance R6, the negative power end of operational amplifier A 1 are connected with ground terminal respectively with the other end of heating resistor RL.
Preferably, described thermal diode D1 adopts germanium diode.
Preferably, described operational amplifier A 1 adopts UA741 operational amplifier.
The invention has the beneficial effects as follows, the present invention, by the thermal diode of small volume being put into heating medical fluids, accurately can measure the temperature of place temperature spot, realize accurate temperature controlling; Temperature measurement module is connected with control circuit by flexible data line, and this electric heating cover can be allowed to adapt to various heating vessel, decreases the inconvenience changing thermometer.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is circuit diagram of the present invention.
In Fig. 1,1 electric heating cover, 2 control circuits, 3 temperature measurement modules, 4 data wires, 5 bottoming holes, 6 heating modules, 7 flasks.
Detailed description of the invention
As shown in Figure 1, a kind of accurate temperature controlling electric heating cover of the present invention, it comprises electric heating cover 1, control circuit 2 and temperature measurement module 3, described temperature measurement module 3 is connected with the input of control circuit 2 by flexible data line 4, and the control end of described control circuit 2 is connected with the heating module 6 be arranged on below electric heating cover bottoming hole 5.
As shown in Figure 1, control module 3 of the present invention comprises thermal diode D1, described control circuit 2 comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, adjustable resistance RW1, adjustable resistance RW2, diode D2, triode Q1, triode Q2, triode Q3 and operational amplifier A 1, and described heating module 6 comprises heating resistor RL; The negative pole of described thermal diode D1 is connected with one end of one end of resistance R1, adjustable resistance RW1 and the positive pole of diode D2, the other end of described adjustable resistance RW1 is connected with adjustable end one end with resistance R2, and the other end of described resistance R2 is connected with the base stage of one end of resistance R3 and triode Q1; The colelctor electrode of described triode Q1 is connected with the inverting input of the negative pole of diode D2 and operational amplifier A 1, and the emitter stage of triode Q1 is connected with one end of resistance R4; The in-phase input end of described operational amplifier A 1 is connected with the adjustable end of adjustable resistance RW2, and output is connected with one end of resistance R7; The two ends of described adjustable resistance RW2 are connected with one end of resistance R5 and one end of resistance R6 respectively, the other end of described resistance R7 is connected with the base stage of triode Q2, the emitter stage of described triode Q2 is connected with the base stage of triode Q3, and the emitter stage of described triode Q3 is connected with one end of heating resistor RL; The other end of described resistance R1, the other end of resistance R5, the positive power source terminal of operational amplifier A 1, the colelctor electrode of triode Q2 access 15V power supply terminal respectively with the colelctor electrode of triode Q3 and are connected, and the other end of the positive pole of described thermal diode D1, the other end of resistance R3, resistance R4, the other end of resistance R6, the negative power end of operational amplifier A 1 are connected with ground terminal respectively with the other end of heating resistor RL.Wherein, described thermal diode D1 adopts germanium diode, and described operational amplifier A 1 adopts UA741 operational amplifier.
The present invention utilizes thermal diode that temperature signal is transformed into the signal of telecommunication, thus effectively achieves the feedback of temperature to heater circuit, controls the switch of heating module, realize the control to temperature with this.During use, be described to prepare sodium cinnamate, first the flask 7 adding 1.0g potash, 7ml acetic anhydride and 2.5ml benzaldehyde is placed in bottoming hole 5, the end (i.e. germanium thermal diode) of temperature measurement module 3 to be placed in flask 7 and below the liquid level that submerges, starting electric heating cover 1 utilizes heating module 6 to heat, and setting expection heating-up temperature 130 DEG C is reference voltage.After starting heating, because fluid temperature is lower than design temperature, negative terminal voltage is lower than reference voltage, and circuit turn-on, heating module starts heating.After being heated to design temperature, negative terminal voltage is higher than reference voltage, and circuit automatic cut-off, heating module stops heating, ensures that fluid temperature is constant and no longer changes on design temperature.Because the germanium diode temperature range adopted is between 77-300 DEG C, not only ensure that the accurate temperature controlling of temperature fluctuations scope in ± 0.1 DEG C, and meet general laboratory heating requirements.
The above is the preferred embodiment of the present invention, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also regarded as protection scope of the present invention.
Claims (7)
1. an accurate temperature controlling electric heating cover, comprise electric heating cover and control circuit, it is characterized in that, also comprise temperature measurement module, described temperature measurement module is connected with the input of control circuit by data wire, and the control end of described control circuit is connected with the heating module be arranged on below electric heating cover bottoming hole.
2. a kind of accurate temperature controlling electric heating cover according to claim 1, it is characterized in that, described temperature measurement module comprises thermal diode.
3. a kind of accurate temperature controlling electric heating cover according to claim 1, it is characterized in that, described heating module comprises heating resistor.
4. a kind of accurate temperature controlling electric heating cover according to claim 1, is characterized in that, described data wire adopts flexible data line.
5. a kind of accurate temperature controlling electric heating cover according to any one of Claims 1-4, it is characterized in that, described control module comprises thermal diode D1, described control circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, adjustable resistance RW1, adjustable resistance RW2, diode D2, triode Q1, triode Q2, triode Q3 and operational amplifier A 1, and described heating module comprises heating resistor RL; The negative pole of described thermal diode D1 is connected with one end of one end of resistance R1, adjustable resistance RW1 and the positive pole of diode D2, the other end of described adjustable resistance RW1 is connected with adjustable end one end with resistance R2, and the other end of described resistance R2 is connected with the base stage of one end of resistance R3 and triode Q1; The colelctor electrode of described triode Q1 is connected with the inverting input of the negative pole of diode D2 and operational amplifier A 1, and the emitter stage of triode Q1 is connected with one end of resistance R4; The in-phase input end of described operational amplifier A 1 is connected with the adjustable end of adjustable resistance RW2, and output is connected with one end of resistance R7; The two ends of described adjustable resistance RW2 are connected with one end of resistance R5 and one end of resistance R6 respectively, the other end of described resistance R7 is connected with the base stage of triode Q2, the emitter stage of described triode Q2 is connected with the base stage of triode Q3, and the emitter stage of described triode Q3 is connected with one end of heating resistor RL; The other end of described resistance R1, the other end of resistance R5, the positive power source terminal of operational amplifier A 1, the colelctor electrode of triode Q2 access 15V power supply terminal respectively with the colelctor electrode of triode Q3 and are connected, and the other end of the positive pole of described thermal diode D1, the other end of resistance R3, resistance R4, the other end of resistance R6, the negative power end of operational amplifier A 1 are connected with ground terminal respectively with the other end of heating resistor RL.
6. a kind of accurate temperature controlling electric heating cover according to claim 5, is characterized in that, described thermal diode D1 adopts germanium diode.
7. a kind of accurate temperature controlling electric heating cover according to claim 5, is characterized in that, described operational amplifier A 1 adopts UA741 operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695367.5A CN104713218A (en) | 2013-12-17 | 2013-12-17 | Accurate temperature-control electric heating jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695367.5A CN104713218A (en) | 2013-12-17 | 2013-12-17 | Accurate temperature-control electric heating jacket |
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| Publication Number | Publication Date |
|---|---|
| CN104713218A true CN104713218A (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310695367.5A Pending CN104713218A (en) | 2013-12-17 | 2013-12-17 | Accurate temperature-control electric heating jacket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105902079A (en) * | 2016-05-06 | 2016-08-31 | 西安唐城电热毯电器有限公司 | Intelligent electric blanket |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220087A (en) * | 1988-06-21 | 1989-12-28 | Arthur Whilhelmus Hend Mulders | Control of a heating system having an electric boiler |
| CN2519698Y (en) * | 2001-11-15 | 2002-11-06 | 徐安文 | Microcomputer time-controlled constant temp. electric heating jacket |
| CN2597074Y (en) * | 2003-01-20 | 2004-01-07 | 张林芳 | Numerically controlled stirring multifunctional electrothermic cover |
| CN1945158A (en) * | 2006-10-26 | 2007-04-11 | 华东理工大学 | Multipurpose direct flow pipe shielded heat carrier boiler |
| CN202377008U (en) * | 2011-12-16 | 2012-08-15 | 西南石油大学 | Rapid-constant-temperature electric heating sleeve |
| CN202962501U (en) * | 2012-09-06 | 2013-06-05 | 淄博职业学院 | Electric heating sleeve with test tube rack |
| CN203719098U (en) * | 2013-12-17 | 2014-07-16 | 马琳 | Precise temperature control electric heating sleeve |
-
2013
- 2013-12-17 CN CN201310695367.5A patent/CN104713218A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220087A (en) * | 1988-06-21 | 1989-12-28 | Arthur Whilhelmus Hend Mulders | Control of a heating system having an electric boiler |
| CN2519698Y (en) * | 2001-11-15 | 2002-11-06 | 徐安文 | Microcomputer time-controlled constant temp. electric heating jacket |
| CN2597074Y (en) * | 2003-01-20 | 2004-01-07 | 张林芳 | Numerically controlled stirring multifunctional electrothermic cover |
| CN1945158A (en) * | 2006-10-26 | 2007-04-11 | 华东理工大学 | Multipurpose direct flow pipe shielded heat carrier boiler |
| CN202377008U (en) * | 2011-12-16 | 2012-08-15 | 西南石油大学 | Rapid-constant-temperature electric heating sleeve |
| CN202962501U (en) * | 2012-09-06 | 2013-06-05 | 淄博职业学院 | Electric heating sleeve with test tube rack |
| CN203719098U (en) * | 2013-12-17 | 2014-07-16 | 马琳 | Precise temperature control electric heating sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105902079A (en) * | 2016-05-06 | 2016-08-31 | 西安唐城电热毯电器有限公司 | Intelligent electric blanket |
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Application publication date: 20150617 |