KR101682349B1 - Temperature control method of carbon fiber heating cable - Google Patents
Temperature control method of carbon fiber heating cable Download PDFInfo
- Publication number
- KR101682349B1 KR101682349B1 KR1020160043193A KR20160043193A KR101682349B1 KR 101682349 B1 KR101682349 B1 KR 101682349B1 KR 1020160043193 A KR1020160043193 A KR 1020160043193A KR 20160043193 A KR20160043193 A KR 20160043193A KR 101682349 B1 KR101682349 B1 KR 101682349B1
- Authority
- KR
- South Korea
- Prior art keywords
- carbon fiber
- fiber heating
- temperature
- value
- resistance
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 96
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 95
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 95
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000007769 metal material Substances 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- 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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- 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
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- 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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Inorganic Fibers (AREA)
Abstract
The present invention relates to a method of controlling the temperature of a carbon fiber heating cable, and more particularly, to a method of controlling a temperature of a carbon fiber heating cable, which can rapidly reduce the resistance and power consumption by rapidly converting a carbon fiber heating cable.
Description
The present invention relates to a method of controlling the temperature of a carbon fiber heating cable, and more particularly, to a method of controlling a temperature of a carbon fiber heating cable, which can rapidly reduce the resistance and power consumption by rapidly converting a carbon fiber heating cable.
The carbon fiber heating cable has a lower power consumption than the heating cable (nickel-chrome wire) using a metal material, has a large effect of reducing electric power, has no harmful effect to the human body and generates a large amount of far infrared rays.
In addition, the carbon fiber has a very high thermal conductivity due to its temperature rising due to lattice vibration.
The electrical resistance of carbon fiber is very small, about 0.5 ~ 0.8 × 10 - 3 Ωcm, and it has a characteristic proportional to length.
As shown in FIG. 1, the carbon fiber heating cable is coated with a carbon fiber bundle.
1 is a structural view of a general carbon fiber heating cable.
As shown in FIG. 1, the carbon fiber heating wire is composed mainly of a carbon fiber 1, which is mainly composed of
2 is a temperature rise graph of a general carbon fiber heating wire and a nickel chrome heating wire.
As shown in FIG. 2, in the case of the nickel chromium wire, the temperature increases proportionally with time.
However, in the case of the carbon fiber heating wire, the temperature reaches a high temperature in a shorter time than that of the nickel chrome wire, so that the thermal efficiency is excellent.
On the other hand, a heating cable made of a metal material, for example, a nickel chrome wire increases resistance in proportion to a rise in temperature, so a simple on-off system is constructed without using a separate control technique.
However, the carbon fiber heating cable has a nonlinearity in resistance at an initial low temperature and a low resistance at an elevated temperature, so that power control at a point where the initial resistance is high is required in order to increase thermal efficiency and reduce power consumption.
That is, in the case of a carbon fiber heating cable, since the resistance is low at a low temperature, it is necessary to convert the resistance to a high temperature state as quickly as possible, and there is no method for controlling the resistance.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a carbon fiber heating cable capable of supplying a large amount of electric power in a low- And to provide a temperature control method of a carbon fiber heating cable capable of improving thermal efficiency and reducing power consumption.
According to an aspect of the present invention, there is provided a method of controlling a temperature of a carbon fiber heating cable, comprising: measuring a resistance of a carbon fiber heating cable; A damage determination step of determining whether the carbon fiber heating wire is damaged by the measured resistance; A temperature measuring step of measuring the temperature of the carbon fiber heating line when the carbon fiber heating line is judged to be normal and calculating the measuring temperature Tm; A difference value comparison determination step of determining whether a temperature difference value? T obtained by subtracting the measured temperature Tm from a preset temperature Ts is larger than a preset temperature reference value Tr; When the temperature difference value? T is larger than the temperature reference value Tr, a set power value that is larger than the power value supplied to the current carbon fiber heating line and smaller than the maximum allowable power value that can be supplied to the carbon fiber heating cable A power supply step of supplying power; Wherein the power supply to the carbon fiber heating cable is interrupted when it is determined that the carbon fiber heating cable is damaged in the damage judging step, Controlling the power supplied to the carbon fiber heating cable so that the temperature of the carbon fiber heating cable reaches the set temperature when the temperature difference value (DELTA T) is not greater than the temperature reference value (Tr) And the set power value supplied in the power supply step is set to a value corresponding to a difference between the temperature difference value (DELTA T) and the temperature reference value (Tr) Is a predetermined absolute value that does not exist.
In the resistance measurement step, the resistance of a plurality of carbon fiber heating wires installed in a parallel connection form is measured.
The damage determining step determines that the carbon fiber heating cable is damaged if the resistance of the plurality of carbon fiber heating cables installed in parallel connection type is increased.
The temperature reference value Tr is preferably 5 占 폚.
The set power value is preferably 80 to 90% of a maximum allowable power value that can be supplied to the carbon fiber heating cable.
If it is determined that the carbon fiber heating line is damaged in the damage determination step, an error is output and power supply to the carbon fiber heating line is cut off.
If the termination command is not issued in the termination determination step, the process proceeds to the resistance measurement step.
According to the temperature control method of the carbon fiber heating cable of the present invention as described above, the following effects can be obtained.
When the power of the carbon fiber heating cable is supplied in a high temperature region having a high resistance, the power is supplied to reach the high temperature state as quickly as possible, and the resistance is reduced as the temperature is rapidly reached, There is an effect.
In addition, by continuously monitoring the resistance of the carbon fiber heating wire, it is possible to detect the damage of the carbon fiber heating wire by confirming the resistance change, and if the damage is confirmed, the heating wire can be replaced quickly.
1 is a structural view of a general carbon fiber heating cable,
2 is a graph showing a temperature rise of a general carbon fiber heating wire and a nickel chrome heating wire,
3 is a flowchart illustrating a method of controlling a temperature of a carbon fiber heating cable according to an embodiment of the present invention.
3 is a flowchart illustrating a method of controlling a temperature of a carbon fiber heating cable according to an embodiment of the present invention.
A method for controlling a temperature of a carbon fiber heating cable according to the present invention includes the steps of measuring a resistance S1, determining a damage S2, measuring a temperature S3, comparing a difference value S4, S5), and an end determination step (S6).
The resistance measuring step S1 is a step of measuring a resistance of the carbon fiber heating wire.
In the resistance measuring step S1, the resistances of a plurality of carbon fiber heating wires installed in parallel connection form are measured.
The resistance measurement method may be measured by various known methods.
The damage determining step S2 is a step of determining whether the carbon fiber heating wire is damaged by the resistance measured in the resistance measuring step S1.
The damage determination step S2 detects whether the resistance of the plurality of carbon fiber heating lines installed in parallel connection is increased or not and determines that the carbon fiber heating cable is damaged if the resistance increases.
This is because the resistance of the carbon fiber heating cable increases when the damage occurs.
If it is determined that the carbon fiber heating line is normal in the damage determination step S2, the process goes to the temperature measuring step S3. If it is determined that the carbon fiber heating line is damaged, the error is outputted and then the power supply to the carbon fiber heating cable is cut off.
It is possible to repair the carbon fiber heating cable in a short period of time, thereby preventing an error output and power supply when the carbon fiber heating cable is damaged. In addition, Can be prevented from being generated.
The temperature measuring step S3 is a step of calculating the measured temperature Tm by measuring the temperature of the carbon fiber heating line when the carbon fiber heating line is determined to be normal in the damage determining step S2.
It is possible to calculate the measured temperature (Tm) by measuring the temperature of the carbon fiber heating wire using a known temperature sensor.
The difference value comparison determination step S4 is a step of determining whether or not the temperature difference value? T obtained by subtracting the measured temperature Tm from a predetermined set temperature Ts is greater than a preset temperature reference value Tr.
That is, it is determined whether or not (Ts - Tm =? T)> Tr.
At this time, the temperature reference value Tr is preset by the user, and preferably the temperature reference value Tr is 5 ° C.
If the temperature difference value? T is larger than the temperature reference value Tr in the difference value comparison step S4, the operation proceeds to the power supply step S5 and the temperature difference value? T is compared with the temperature reference value Tr Tr), the electric power supplied to the carbon fiber heating wire is PI-controlled so that the temperature of the carbon fiber heating wire reaches the set temperature.
That is, if the measured temperature does not reach the preset temperature, the power supply step S5 is performed. If the measured temperature reaches the set temperature, the PI power control is performed to set the temperature of the carbon fiber heating wire So that the temperature can be reached.
At this time, a specific method of controlling the PI power may be performed using a conventionally known method as shown in the registration number 10-1286708.
The power supply step S5 is performed when the temperature difference value DELTA T is greater than the temperature reference value Tr and is greater than a power value supplied to the current carbon fiber heating line and a maximum allowable power value A set power value of a smaller value is supplied.
That is, the power supply step S5 is performed when the measured temperature does not reach the preset temperature. In order to allow the measured temperature to reach the set temperature quickly, in the power supply step S5, And supplies a set power value that is smaller than a maximum allowable power value that can be supplied to the carbon fiber heating cable.
The set power value is preferably 80 to 90% of a maximum allowable power value that can be supplied to the carbon fiber heating cable.
At this time, the set power value supplied in the power supply step S5 is a predetermined absolute value irrespective of the difference between the temperature difference value? T and the temperature reference value Tr.
For example, when the set power value is set to 80% of the maximum allowable power value that can be supplied to the carbon fiber heating line, when the power supply step S5 is performed, the temperature difference value DELTA T ) And the temperature reference value (Tr), it is possible to supply 80% of the maximum allowable power value to be supplied to the carbon fiber heating cable to the carbon fiber heating cable.
Therefore, by quickly supplying high power to the carbon fiber heating wire at the initial stage of the power supply at a low temperature of the carbon fiber heating wire, the carbon fiber heating wire can be quickly converted to a high temperature state and the resistance can be lowered.
This is because the higher the temperature, the lower the resistance and the better the thermal efficiency, and the faster the set temperature is reached, the better the effect of reducing the power consumption.
The termination determination step S6 is a step of determining whether or not an end command has been issued.
That is, the user or the like presses an end button or the like to determine whether or not a program end command has been issued.
If the termination command is issued in the termination determination step (S6), the power supply to the carbon fiber heating cable is interrupted.
If it is determined in step S6 that the termination command has not been issued, the process proceeds to the resistance measurement step S1 to repeat the above-described process.
According to the temperature control method of the carbon fiber heating cable of the present invention as described above, when power is initially supplied to the carbon fiber heating cable, high power is rapidly supplied to increase the temperature to reduce the resistance, thereby reducing energy consumption .
The method of controlling the temperature of the carbon fiber heating cable according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea of the present invention.
S1: resistance measurement step S2: damage determination step S3: temperature measurement step S4: difference value comparison determination step S5: power supply step S6: end determination step.
Claims (7)
A damage determination step of determining whether the carbon fiber heating wire is damaged by the measured resistance;
A temperature measuring step of measuring the temperature of the carbon fiber heating line when the carbon fiber heating line is judged to be normal and calculating the measuring temperature Tm;
A difference value comparison determination step of determining whether a temperature difference value? T obtained by subtracting the measurement temperature Tm from a preset temperature Ts is larger than a preset temperature reference value Tr;
When the temperature difference value? T is larger than the temperature reference value Tr, a set power value that is larger than the power value supplied to the current carbon fiber heating line and smaller than the maximum allowable power value that can be supplied to the carbon fiber heating cable A power supply step of supplying power;
And a termination determination step of determining whether or not a termination command has been issued,
Wherein, when it is determined that the carbon fiber heating line is damaged in the damage determination step, power supply to the carbon fiber heating cable is interrupted,
In the difference value comparison step, when the temperature difference value? T is not greater than the temperature reference value Tr, the power supplied to the carbon fiber heating line is controlled by the PI so that the temperature of the carbon fiber heating line reaches the set temperature ,
If the termination command is issued in the termination determination step, the power supply to the carbon fiber heating cable is interrupted,
Wherein the set power value supplied in the power supply step is a predetermined absolute value irrespective of the difference between the temperature difference value (DELTA T) and the temperature reference value (Tr).
Wherein the resistance measuring step measures the resistance of the plurality of carbon fiber heating wires installed in parallel connection form.
Wherein the damage determining step determines that the carbon fiber heating wire is damaged if the resistance of the plurality of carbon fiber heating wires installed in parallel connection is increased.
Wherein the temperature reference value (Tr) is 5 占 폚.
Wherein the set power value is 80 to 90% of a maximum allowable power value that can be supplied to the carbon fiber heating cable.
And when the carbon fiber heating line is determined to be damaged in the damage determination step, an error is output and power supply to the carbon fiber heating line is cut off.
And if the termination command is not issued in the termination determination step, the temperature measurement step is moved to the resistance measurement step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160043193A KR101682349B1 (en) | 2016-04-08 | 2016-04-08 | Temperature control method of carbon fiber heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160043193A KR101682349B1 (en) | 2016-04-08 | 2016-04-08 | Temperature control method of carbon fiber heating cable |
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| Publication Number | Publication Date |
|---|---|
| KR101682349B1 true KR101682349B1 (en) | 2017-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020160043193A KR101682349B1 (en) | 2016-04-08 | 2016-04-08 | Temperature control method of carbon fiber heating cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200300683Y1 (en) | 2002-09-13 | 2003-01-14 | 우주산업(주) | Carbon fiber heating wire |
| KR200350411Y1 (en) | 2004-02-26 | 2004-05-12 | 김기호 | Electric Cable which Composed with Metallic Core Wires Wound with Carbon Fiber Thread |
| KR20090032400A (en) * | 2007-09-27 | 2009-04-01 | 한국전력공사 | Apparatus for variable voltage and current supplier for cable experiment of unloading electrical equipment and control method thereof |
| US20100282458A1 (en) * | 2009-05-08 | 2010-11-11 | Yale Ann | Carbon fiber heating source and heating system using the same |
| KR101465144B1 (en) * | 2014-05-30 | 2014-11-28 | 이재준 | Heating line control device for anti-freezing and heating line control system having the same |
| JP2016028398A (en) * | 2012-09-11 | 2016-02-25 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Device and method for limiting temperature by controlling electric heater |
-
2016
- 2016-04-08 KR KR1020160043193A patent/KR101682349B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200300683Y1 (en) | 2002-09-13 | 2003-01-14 | 우주산업(주) | Carbon fiber heating wire |
| KR200350411Y1 (en) | 2004-02-26 | 2004-05-12 | 김기호 | Electric Cable which Composed with Metallic Core Wires Wound with Carbon Fiber Thread |
| KR20090032400A (en) * | 2007-09-27 | 2009-04-01 | 한국전력공사 | Apparatus for variable voltage and current supplier for cable experiment of unloading electrical equipment and control method thereof |
| US20100282458A1 (en) * | 2009-05-08 | 2010-11-11 | Yale Ann | Carbon fiber heating source and heating system using the same |
| JP2016028398A (en) * | 2012-09-11 | 2016-02-25 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Device and method for limiting temperature by controlling electric heater |
| KR101465144B1 (en) * | 2014-05-30 | 2014-11-28 | 이재준 | Heating line control device for anti-freezing and heating line control system having the same |
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