CN1176409C - Heating installation power supply control apparatus - Google Patents
Heating installation power supply control apparatus Download PDFInfo
- Publication number
- CN1176409C CN1176409C CNB021209278A CN02120927A CN1176409C CN 1176409 C CN1176409 C CN 1176409C CN B021209278 A CNB021209278 A CN B021209278A CN 02120927 A CN02120927 A CN 02120927A CN 1176409 C CN1176409 C CN 1176409C
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- voltage
- heater
- power supply
- heating
- supply control
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Abstract
The present invention relates to a heater power supply control device which belongs to the field of heating control devices, particularly to a heater power supply control device with a heating element using a Nichrom (nickel-chromium) wire. The heater power supply control device applies voltage to control heating by a heating element with increased resistance when the temperature rises. A voltage output circuit with variable output voltage and a current detection circuit for measuring the current intensity of the heating element are arranged in the heater power supply control device. The present invention is characterized in that the voltage outputted by the voltage output circuit can be changed by the magnitude of the measured current intensity. The heating device of the present invention applies a small amount of voltage to the heating element to measure the current after being started up, and then the voltage is increased slowly. The current detection is started up after the heating device is started up, and is stopped after the current of the heating element reaches to a certain value and lies in a normal state.
Description
Technical field
The invention belongs to the heating control apparatus field, especially used Nichrom (nickel chromium triangle) line in the heater.
Background technology
Carry out the snow melt of road or the heating arrangement of ground greenhouse in the past and used the Nichrom line.The heat generation characteristic of Nichrom line applies certain voltage, and temperature raises, and resistance reduces, and electric current increases.The excessive phenomenons such as overheated, disconnected heat that cause of electric current will take place in time one length like this.So when making every effort to study the temperature rising in recent years, the heater that resistance increases.This heater is called (semiconductor heat booster), is cooperated by conductive carbon and polymkeric substance to form.
Semiconductor is made of emboliform conductive carbon (opposing heater) and resin particle (being dispersed in the conductive carbon).Resin particle shrinks in the time of low temperature, and electric current is easy to by conductive carbon, and resin particle expands in the time of high temperature, constrains the particle of conductive carbon, makes electric current be difficult for passing through, so resistance increases.
Characteristic when semiconductor heat booster applies certain voltage is that resistance is little when beginning to apply voltage, and thermal value is big, but the time one is long, and resistance increases, so thermal value reduces.
The temperature of semiconductor heat booster raises, and resistance increases, and electric current reduces, and the result has the automatic control of the uniform temperature kept.According to this automatic control, when being in superheat state, semiconductor heat booster, can automatically restore to normal condition because electric current is little.Use the device of semiconductor heat booster production control and security brilliance.But, the well heater that utilizes semiconductor to make, the low-temperature condition when beginning to start has big electric current to be passed through.
At this time need power supply to have high capacity, may cause cost to increase above normal condition.
Summary of the invention
The present invention has the shortcoming that will solve above-mentioned original technology to create, and its objective is provides the heating of the control that can be adapted to semiconductor heat booster to put.
In order to solve above-mentioned problem, the heater that resistance increased when the present invention was intensification applies voltage to be changed thereupon, makes the control device of above-mentioned heater heating.Built-in output voltage is the voltage output loop of variable voltage and the current detection circuit of measuring the electric current of heater.It is characterized in that above-mentioned voltage output loop is exported to the voltage of heater, the size that can pass through the electric current measured changes.The control device of the present invention's record can apply certain voltage to heater under normal condition.Be characterized in, start back voltage output loop and apply than the electric current of measuring heater after the little initial voltage of above-mentioned certain voltage, increase or reduce above-mentioned initial voltage then to heater.Control device of the present invention, feature are that above-mentioned initial voltage is below the 10V.
Control device of the present invention is provided with the temperature detection loop of the temperature of measuring above-mentioned heater.Feature is that the change value of the voltage of above-mentioned voltage output loop can change according to the temperature of heater.According to the temperature that the temperature detection loop is measured, the thermal value of control heater.Control device of the present invention.Be characterized in,, derive temperature, the thermal value of control heater according to the size of current and the added voltage of heater.Connected resistance increased when temperature raise heater and corresponding control device, heater directly is connected the output terminal of heating arrangement.
The present invention such as above-mentioned method constitute, and are a kind ofly to give that resistance makes the heating arrangement of heater heating also along with the heater that increases applies voltage when heating up.
This heating arrangement starts the back and applies voltage in a small amount to heater, measures electric current, increases voltage more slowly.The detection of electric current begins to reach certain value to the electric current by heater after heating arrangement starts, and is in till the normal condition.
Reach before the normal condition, the voltage output loop can be supplied with maximum current to heater, improves the temperature of heater rapidly.The voltage that heater is applied increases from small to large slowly, and voltage reduced when electric current was excessive, did not have super-high-current to continue the danger of passing through, and does not therefore need the power supply or the isolating switch of high-capacity.
When starting the low temperature heater, the voltage that isolating switch is applied begins to good from about 10V usually.
When heater begins to switch on, can infer the temperature of heater, set the change value that applies voltage according to the relation that applies voltage and current.For example, when heater is in the condition of high temperature, the change value that applies voltage is increased.In addition, when the temperature of heater descends in the use, the change value that applies voltage is reduced, prevent that super-high-current from passing through.
If can infer the temperature of heating, just can make heater simply keep desired temperature.
Description of drawings
Fig. 1 is heating arrangement of the present invention and control loop process flow diagram.
Fig. 2 is the process flow diagram of the operating state of heating arrangement of the present invention.
Fig. 3 represents that the present invention carries out the process flow diagram of temperature detection.
Fig. 4 (a) is the planimetric map and the sectional drawing of semiconductor heat booster pattern of the present invention (b).
Embodiment
The embodiment of heating arrangement of the present invention is described.With reference to Fig. 1, symbol 2 an expressions heating arrangement of the present invention, the heater 11 that control device is made up of the semiconductor heating arrangement, heating arrangement 2, temperature-sensing element (device) 14 are formed.
The planimetric map of Fig. 4 (a) expression heater 11, figure (b) expression sectional drawing.Heater 11 is made up of power voltage line 21, ground voltage line 22, heater material 23.The heater that heater material 23 is made up of conductive carbon and be dispersed in the expand with heat and contract with cold resin particle of characteristic of having in the conductive carbon and constitute.
Connect by fine rule between power voltage line 21 and the ground voltage line 22, can make heater 11 bendings.
The symbol 31 of Fig. 1 is expression voltage source modes.This voltage source 31 can be exported commercial (as 100V) alternating voltage.
Control device 2 is made up of voltage output loop 12, current detection circuit 13, temperature-sensing element (device) 14, temperature detection loop 15, voltage control loop 16.The voltage of voltage output loop 12 is supplied with by voltage source 31.The signal that voltage output loop 12 is exported according to voltage control loop 16, the voltage that control voltage source 31 is supplied with.The voltage of these voltage control loop 16 outputs is applied between the power voltage line 21 and ground voltage line 22 of heater 11.
Be provided with current detection circuit 13 between voltage supply circuit 12 and the heater 11, therefore can measure the electric current of heater 11.
The temperature detection loop 15 that heater is 11 li links to each other with temperature-sensing element (device) 14.The signal of temperature detection loop 15 and current detection circuit output is input to voltage control loop 16.
With reference to Fig. 2, drop into power supply (step S1) earlier, set the initial value of output voltage and the maximal value (step S2) of electric current, voltage output loop 12 output currents, voltage output loop 12 applies initial value voltage according to the signal of output to heater.The original state of heater is a low temperature, and small resistor is so initial voltage is very little about 1V.At this moment the strength of current by heater 11 is about 100A.
When applying initial voltage, measure electric current I m (step S4) earlier by heater 11.The electric current I m of comparative measurements and predetermined maximum are held electric current I o (step S5) then.According to result relatively, carry out suitable processing at last.
The electric current I m that measures big the time, reduces the voltage of voltage output loop 12 than the maximum electric current I o that holds, and voltage is put on heating element 11 (step S6), measures electric current, holds electric current I o relatively with maximum once more.
Little the time, affirmation could be changed the voltage (step S7) of voltage output loop 12 outputs to the electric current I m that measures than the maximum electric current I o that accommodates.If variable, will increase output voltage (step S8), measure the electric current I m (step S4) of heater 11.Apply change voltage, flow through the electric current I m of heater 11 big the time, reduce voltage (step S6); When current value is little, increase voltage (step S7, S8).
In addition, the value of the electric current I m of mensuration does not reach maximum and accommodates electric current I o, but setting voltage does not change voltage when having reached the exportable maximum voltage value of voltage output loop 12.
As implied above, during the voltage that in this invention heater 11 applied, should establish little (below the 10V, it is following to be more preferably 1V as far as possible) during original state, finally the output voltage of voltage source 31 is increased to (100V).
As implied above, increase when power supply is adjusted the voltage of exporting in loop 12 and can increase setting value, for example can increase by 2 times, 3 times multiple.When the electric current I m of heater 11 is excessive, reduce the voltage of voltage output loop 12 outputs, in the time of too little, increase output voltage.
Current value I m surpasses maximum and accommodates electric current I o, and when the electric current in power supply adjustment loop 12 was maximum output current, heater 11 was by big electric current, heat up, resistance reduces, and Im also will diminish, reduce power supply and adjust the output voltage in loop 12, pass through maximum output current at short notice.The time that this electric current passes through, preferably be made as in the allowed time scope of safety features such as isolating switch.
The temperature of the heater of measuring according to temperature-sensing element (device) 14 and temperature detection loop 15 11, setting increases or reduces output voltage.
Process flow diagram shown in Figure 3 has carried out temperature measuring and amperometric determination (step T1) simultaneously on the basis of process flow diagram shown in Figure 2.According to the state of the temperature judgement heater of measuring 11, the change value (step T2) of setting voltage.When heater 11 heats up, increase the change value (recruitment or reduction) of voltage; Heater 11 is in low temperature, when resistance is little, reduces the change value of voltage.Like this, can be according to the output voltage (step S6, S8) of setting change value control voltage output loop.
The temperature of heater 11 raises, and when resistance increases, can apply certain voltage to heater, returns to normal condition.
After the startup, the electric current of semiconductor heat booster is increased.Especially in the scope of the current supply ability that is no more than power supply, by maximum current, can make semiconductor heat booster reach institute's fixed temperature rapidly as far as possible.
Under normal condition, little by the electric current of semiconductor heat booster, can utilize the automatic control adjusting of semiconductor heat booster.
Claims (5)
1, a kind of heating installation power supply control apparatus, the heater that resistance increases when heating up by giving applies the device that voltage is controlled heating, and built-in output voltage is variable voltage output loop and the current detection circuit of measuring the strength of current of heater;
The voltage that it is characterized in that the output of voltage output loop can be according to the big minor change of the strength of current of being measured.
2, heating installation power supply control apparatus as claimed in claim 1 is characterized in that being provided with the temperature detection loop of measuring above-mentioned heater, and the voltage of above-mentioned voltage output loop output can change according to the temperature that the temperature detection loop is measured.
3, heating installation power supply control apparatus as claimed in claim 1 is characterized in that heater directly is connected the output terminal of heating arrangement.
4, heating installation power supply control apparatus as claimed in claim 3, it is characterized in that heater is made up of power voltage line, ground voltage line, heater material, heater material is arranged between the power voltage line and ground voltage line by equidistant configuration, global shape becomes wire, the insulating material of reeling on every side.
5, heating installation power supply control apparatus as claimed in claim 4 is characterized in that the heater that heater material is made up of conductive carbon and is dispersed in the expand with heat and contract with cold resin particle of characteristic of having in the conductive carbon constituting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021209278A CN1176409C (en) | 2002-06-12 | 2002-06-12 | Heating installation power supply control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021209278A CN1176409C (en) | 2002-06-12 | 2002-06-12 | Heating installation power supply control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1464349A CN1464349A (en) | 2003-12-31 |
| CN1176409C true CN1176409C (en) | 2004-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021209278A Expired - Fee Related CN1176409C (en) | 2002-06-12 | 2002-06-12 | Heating installation power supply control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1176409C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7928342B2 (en) * | 2007-04-03 | 2011-04-19 | Tutco, Inc. | Metal sheathed heater with solid state control device |
| JP5163719B2 (en) | 2010-09-15 | 2013-03-13 | コニカミノルタビジネステクノロジーズ株式会社 | Image forming apparatus |
| CN106982481A (en) * | 2016-08-30 | 2017-07-25 | 广东天物新材料科技有限公司 | A kind of rapid heating element |
| CN108021023A (en) * | 2016-11-01 | 2018-05-11 | 株洲时代新材料科技股份有限公司 | Megawatt wind turbine blade mould electric-heating control system and control method |
| CN108306258B (en) * | 2018-04-04 | 2023-12-29 | 奥然生物科技（上海）有限公司 | Over-temperature detection circuit and over-temperature protection circuit for heater |
-
2002
- 2002-06-12 CN CNB021209278A patent/CN1176409C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1464349A (en) | 2003-12-31 |
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