CN1070508A - Thermosensitive heating wire - Google Patents
Thermosensitive heating wire Download PDFInfo
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- CN1070508A CN1070508A CN 92105981 CN92105981A CN1070508A CN 1070508 A CN1070508 A CN 1070508A CN 92105981 CN92105981 CN 92105981 CN 92105981 A CN92105981 A CN 92105981A CN 1070508 A CN1070508 A CN 1070508A
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Abstract
The present invention relates to a kind of thermosensitive heating wire, it is included in concentric circles is provided with in turn on the core 1 involute conductor 2, macromolecule temperature-sensing body 3, rolls up conductor 4, insulating coating 5 outward; Macromolecule temperature-sensing body is made of nylon 12, polyamide copolymer synthetic rubber and the average degree of polymerization phenol series thermoplastic resin composition more than 10.Its volume intrinsic impedance 80 ℃, during 60Hz greater than 1.0 * 10
9The temperature of Ω cm and display medium losstangenttan=1 is more than 80 ℃.Protective resistance is connected with above-mentioned pair of conductors, and its two ends apply the above AC supply voltage of 200V, and in the detected temperatures signal, above-mentioned outer volume conductor also makes it to be also used as heater wire.
Description
The present invention relates to be used for the thermosensitive heating wire of the flexible wire of electric greenhouse utensils (heating utensil) such as electric woollen blanket, electric carpet.
In the past, in the flexible linear temperature sensors that is used for electric heating utensils such as electric woollen blanket, electric carpet, had and adopt the two wires mode be called temperature detection line and these other two lines of heater wire and adopt a line mode of their incorporate thermosensitive heating wires.One line mode, though a thermosensitive heating wire is configured in the heating machine just passable, but then owing in this root line, have heating and security personnel concurrently with the function of temperature fuse, thereby in this formation, the problem that has many restrictions and need to solve.
One of problem, because thermosensitive heating wire has heating and security personnel concurrently with the function of temperature fuse, it is impossible using the loop that separates with AC power to constitute and doing control, must directly be coupled with this AC power and constitutes the driving loop.In the past, a this line mode was used in the civil power about 100 volts.
But under the situation of the AC power more than 200 volts, the spontaneous heating of thermistor itself becomes new problem.That is, the spontaneous heating that in thermal resistor layer, produces, when in the time of 200 volts, being 100 volts 4 times, if thereby the thermosensitive heating wire that in the past constitutes in statu quo is used for 200 volts, then existing can bigger this problem of spontaneous heating of generation.
Again, usually, avoid the method for spontaneous heating, have to connect series resistance, the method for restriction electric current to prevent that thermistor from damaging as thermistor.But, because this thermosensitive heating wire also has the function of security personnel with temperature fuse, the restriction that then exists such current-limiting resistance not insert concurrently.
Moreover even the thickness of the electrode area of the electrode cable of thermosensitive heating wire and macromolecule temperature-sensing body layer etc. can make impedance variation, but big change is extremely difficult.
Therefore, the objective of the invention is to solve the problem of prior art, adopt 200 volts of above AC power also not produce the thermosensitive heating wire of self-heating even provide a kind of.
In order to achieve the above object, thermosensitive heating wire of the present invention be core (core system) go up concentric circles be provided with in turn involute conductor (the involute Guide body of using), macromolecule temperature-sensing body, outside roll up the thermosensitive heating wire of conductor, insulating coating, it is characterized in that, above-mentioned macromolecule temperature-sensing body is made of the mixed component of three kinds of compositions that nylon 12, polyamide copolymer synthetic rubber and the average degree of polymerization phenol series of heat plastic resin more than 10 is formed at least, its volume intrinsic impedance 80 ℃, during 60HZ greater than 1.0 * 10
9The temperature of Ω cm and display medium losstangenttan=1 is positioned at more than 80 ℃; During unusual the intensification, because short circuit between above-mentioned pair of conductors, the protective resistance less than 2K Ω of heating is connected with above-mentioned pair of conductors, and its two ends apply the above AC supply voltage of 200V, and in the time of the detected temperatures signal, above-mentioned outer volume conductor is also used as heater wire.
In the above-described configuration, the amide copolymer that preferably replaces of polyamide copolymer synthetic rubber from the N of the nylon 11 series that contains N-alkyl substituted amide unit or nylon 12 series; Or has an at least a synthetic rubber of selecting in the ether amide copolymer of the nylon 11 series of epoxides unit or nylon 12 series.
Again, in the above-described configuration, at least a resin preferably from alkylphenol-copolyoxymethylenes, hydroxybenzoate-formaldehyde condensation products and polyhydroxy styrene (Port リ ヒ De ロ キ シ ス チ レ Application), selected of the phenol series of heat plastic resin of average degree of polymerization more than 10.
If according to the formation of the invention described above, thermosensitive heating wire can be brought into play the premium properties that does not produce self-heating under the AC field more than the 200V.Promptly, macromolecule temperature-sensing body of the present invention, the mixed component of at least three kinds of compositions being made up of nylon 12, polyamide synthetic rubber and the average degree of polymerization phenol series of heat plastic resin more than 10 constitutes, these all are macromolecular materials, the electric insulating quality height, its volume intrinsic impedance 80 ℃, can accomplish 1.0 * 10 during 60HZ
9It is more than 80 ℃ that above and temperature display medium losstangenttan=1 of Ω cm also can make it.
Here, polyamide copolymer synthetic rubber and the average degree of polymerization phenol series of heat plastic resin more than 10 has the effect that the humidity interdependence that makes this macromolecule temperature-sensing body reduces greatly.The special combined effect of the aldehyde polycondensate of this polyamide copolymer synthetic rubber and phenol series compound is opened clear 61-2302 communique the spy already, the spy opens in the clear 61-2303 communique and disclosed.
In the present invention, owing in the aldehyde condensed polymer of phenol series compound, use the phenol series of heat plastic resin of average degree of polymerization 10 or more, its electric insulation resistance height and do not reduce the resistance of constituent.Thus, the volume intrinsic impedance of macromolecule temperature-sensing body 80 ℃, can remain on 1.0 * 10 during 60HZ
9More than the Ω cm.Volume intrinsic impedance (the Z of macromolecule temperature-sensing body
8P) temperature dependency, as shown in Figure 3, with the shunt circuit approximate representation of capacitive reactances (1/ ω c) and volume intrinsic resistance (ρ), its intersection point is the point of tan δ=1, this temperature as shown in Figure 3.Macromolecule temperature-sensing body of the present invention is at the point that has tan δ=1 more than 80 ℃.
Macromolecule temperature-sensing body is determined by dielectric constant at the volume intrinsic impedance of normal temperature (low temperature side), when 60HZ, no matter this value of which kind of macromolecule remains on about more than 2.Thus, the Z of normal temperature (low temperature side)
SpCan not make bigger value greater than this value.That is, be 2 at dielectric constant, during 60HZ, S
SpBe 1.5 * 10
10Ω cm.The dielectric constant of nylon is also little when the low temperature below 10 ℃, is about about 3.5.It is equivalent to Z
Sp=8.6 * 10
9Ω cm.On the one hand, the point of tan δ=1 is present in about Z in the nylon constituent
Sp=1 * 10
9Near the Ω cm.Thus, according to the dielectric constant from normal temperature to tan δ=1, the thermistor temp coefficient is between these values, and the composition of above-mentioned macromolecule temperature-sensing body of the present invention is suitable for making and has this specific character.
This macromolecule temperature-sensing body has sharp-pointed molten point, even also show the remarkable characteristic that dissolves as temperature fuse.Again, the sharp-pointed molten point of above-mentioned what is called refers to from the solid-state state of dissolving that becomes sharp.By the heat analysis of DSC and so on,, can confirm this point by the demonstration of rapidly heat absorption change.
On the other hand; during unusual the intensification; thermosensitive heating wire of the present invention; macromolecule temperature-sensing body dissolves, short circuit between pair of conductors, and the above AC supply voltage of 200V adds to the protective resistance less than 2K Ω that series connection links; make it heating; because this heating, the temperature fuse of main power circuit cuts off, thereby guarantees safety.Roll up electrode outward and be also used as heater wire as shown in Figure 2 with conductor again.
Like this, thermosensitive heating wire of the present invention is depressed at the High Level AC Voltage more than 200, and the detected temperatures signal simultaneously, also can be also used as temperature fuse and heater wire.
Fig. 1 is the figure of the formation of expression thermosensitive heating wire of the present invention.
Fig. 2 is a figure who constitutes example of the temperature control loop of expression employing thermosensitive heating wire of the present invention.
Fig. 3 is the figure of the volume intrinsic impedance-temperature characterisitic of expression macromolecule temperature-sensing body of the present invention.
Below, embodiment comes more specific description the present invention by the narration of reference accompanying drawing.
Among the figure, the 1st, core, the 2nd, involute conductor; the 3rd, macromolecule temperature-sensing body, the 4th, outer volume conductor, the 5th, insulating coating; the 6th, thermosensitive heating wire; the 7th, protective resistance, the 8th, control loop, the 9th, temperature is set the loop; the 10th, the temperature detection loop; the 11st, controllable silicon, the 12nd, the AC power that 200V is above, the 13rd, temperature fuse.
Fig. 1 is the pie graph of expression thermosensitive heating wire of the present invention.Use the embodiment of formation of the control loop of this heater wire to be shown in Fig. 2.Thermosensitive heating wire 6, as shown in Figure 1, in turn involute conductor 2, macromolecule temperature-sensing body 3, be arranged on the core 1 outward with rolling up conductor 4, insulating coating 5 concentric circles.Above-mentioned macromolecule temperature-sensing body 3 of the present invention is that the mixed component by nylon 12, polyamide copolymer synthetic rubber and the average degree of polymerization phenol series of heat plastic resin more than 10 constitutes.Roll up outside between the insulating coating 5 of conductor 4 and also the separating layer that is made of polyester film and so on can be arranged.
Though have in the polyamide copolymer synthetic rubber: the acid amides that the N-alkyl replaces, ether acid amides (ェ one テ Le ァ ミ De), esteramides (エ ス テ Le ァ シ De) etc., but the amide copolymer that the N that contains in the present invention, the nylon 11 series of N-alkyl substituted amide unit or nylon 12 series replaces; Or the ether amide copolymer with nylon 11 series or nylon 12 series of epoxides unit, when being phenol based thermoplastic resin combination more than 10, having the effect that reduces the moisture absorption, and be applicable to the present invention with above-mentioned average degree of polymerization.The phenol based thermoplastic resin of average degree of polymerization more than 10, electric insulation resistance is high and do not reduce the resistance of composition, and specifically, what be fit to has: alkylphenol-formaldehyde condensation products, hydroxybenzoate-formaldehyde condensation products, polyhydroxy styrene etc.
Thermosensitive heating wire 6 of the present invention is made of above-mentioned macromolecule temperature-sensing body, the volume intrinsic impedance of this macromolecule temperature-sensing body 80 ℃, be during 60HZ greater than 1.0 * 10
9Ω cm, and the temperature of display medium losstangenttan=1 is positioned at more than 80 ℃.
Again, the thickness of the macromolecule temperature-sensing body 3 of the thermosensitive heating wire 6 that adopts in the present invention is preferably about 0.15-0.3mm.And the thickness of thermosensitive heating wire 6 is preferably about 2.0-4.0mm.
Adopt such thermosensitive heating wire, as shown in Figure 2, constitute electric control loop.Following protective resistance 7 series connection of 2K Ω are attached to the pair of conductors 2,4 of thermosensitive heating wire 6, when unusual the intensification, and macromolecule temperature-sensing body 3 fusings, because short circuit between above-mentioned pair of conductors, high voltage adds to protective resistance 7 and makes it heating.Then, the temperature fuse of the main power source of cut-out and thermal coupling.Just often, the temperature signal of thermosensitive heating wire 6 detects and is input to control loop 8 by temperature detection loop 10.Control loop 8 the signal in this signal and temperature setting loop is relatively controlled the triggering of controllable silicon 11.Apply the AC supply voltage 12 more than 200 volts at the two ends of thermosensitive heating wire 6.This thermosensitive heating wire 6 also will be rolled up conductor 4 outward and be also used as heater wire.Like this, thermosensitive heating wire not only has the function of temperature detection, and the function as temperature fuse, heater wire is arranged.Thermosensitive heating wire of the present invention not only can use controllable silicon in as this control mode of the half-wave of power control component, also can constitute the temperature control loop with all-wave control bidirectional triode thyristor, relay and so on.Again, in having the loop of microcomputer, thermosensitive heating wire of the present invention can constitute all temps control loop.
Although this thermosensitive heating wire has the thermistor characteristic, having to connect is used to prevent the restriction of the current-limiting resistance that thermistor damages.But the present invention may use surpassing under the high power supply voltage of 200V, even realized that when high temperature with high reliability, the high life is used thermosensitive heating wire.
Below, with specific embodiment the present invention is described.
On aromatic polyester (Network ラ レ makes vectra) (the ベ Network ト ラ Application) core 1 of 1500 Denier (デ ニ one Le), the tinning copper cash of the wide 0.3mm of paper tinsel, the thick 0.07mm of paper tinsel (tin Ru η Copper Line) is rolled into helical form as involute conductor 2 with the spacing of 0.8mm, then, lining macromolecule temperature-sensing body 3.This macromolecule temperature-sensing body is the decyl amide copolymer synthetic rubber that (A) nylon 12, (B) N-octyl group (35%) (weight) are replaced, and (C) the thermoplasticity dodecyl resinox of average degree of polymerization 280 is the constituent (containing stabilizer) that 70: 30: 15 013 ratio mixes with the weight ratio of A: B: C.Its volume intrinsic impedance is 5 * 10 in the time of 30 ℃ when 60HZ
9Ω cm is 1.6 * 10 in the time of 80 ℃
9Ω cm, the temperature of display medium losstangenttan=1 is 91 ℃.Then, the corronil line of 0.24mm diameter is made the paper tinsel of thick 0.08mm, wide 0.56mm and formed helical form as outer volume conductor 4 with the spacing of 1.6mm, process extruder, soft PVC insulating coating 5 is covered thereon, obtain thermosensitive heating wire with line.
This thermosensitive heating wire 25m distribution in electric woollen blanket, the electric control loop that pie graph 2 is such.1.2K the protective resistance 7 of Ω is connected in series with the pair of conductors 2,4 of thermosensitive heating wire 6.The 220V AC power is connected to this temperature control loop, can does accurate temperature control.Again, a part of crooked (the curved circle) of thermosensitive heating wire made abnormality, detect its hotwork temperature of crossing and control.Moreover, when making other thermal source of 200 ℃ of contacts, 3 fusing of macromolecule temperature-sensing body layer; because short circuit between above-mentioned pair of conductors adds high voltage on protective resistance 7, protective resistance 7 heatings; cut off the temperature fuse of the main power source that interrelates with heat, guaranteed safe in utilization.
The decyl amide copolymer synthetic rubber that Ge Liluo acid amides (the グ リ Le ァ ミ De) ELY60 of employing EMS-CHEMIE corporate system replaces the N-octyl group (35%) among the embodiment 1 to replace is as ether amide copolymer synthetic rubber.Again, hydroxybenzoic acid undecyl-formaldehyde (the オ キ ミ benzoic acid ウ Application デ シ Le one ホ Le system ア Le デ ヒ De) condensation polymer that adopts average degree of polymerization 150 constitutes macromolecule temperature-sensing body as phenol series of heat plastic resin.Its volume intrinsic impedance when 60HZ, is 6 * 10 in the time of 30 ℃ as shown in Figure 3
9Ω cm, be 1.2 * 10 80 ℃ the time
9Ω cm, the temperature of display medium losstangenttan=1 is 86 ℃.Constitute thermosensitive heating wire similarly to Example 1, in same loop, carry out temperature control experiment.Obtain good result similarly to Example 1.
According to above-mentioned the present invention, thermosensitive heating wire can reach the premium properties that does not produce spontaneous heating under the AC field more than the 200V.That is, can obtain good thermosensitive heating wire, utilize this heater wire except that temperature detection, also to have the function of heating and security personnel's usefulness temperature fuse concurrently under the AC power more than 200V; Can be formed in good temperature control equipment under 200 volts of above AC power.
Again, according to the present invention, can be formed under the above AC power of 200V, although when the spontaneous heating that produces in thermal resistor layer becomes 100V 4 times, thermistor self does not produce the good thermosensitive heating wire of spontaneous heating.Thus, even under the high power supply voltage more than the 200V, use, can at high temperature use thermosensitive heating wire, so formation of the present invention has big value with high reliability, high life.Industrial value of the present invention as mentioned above is very big.
Claims (3)
1, a kind of thermosensitive heating wire is included in concentric circles is provided with in turn on the core involute conductor, macromolecule temperature-sensing body, rolls up conductor, insulating coating outward; It is characterized in that described macromolecule temperature-sensing body is to be made of nylon 12, polyamide copolymer synthetic rubber and the average degree of polymerization phenol series thermoplastic resin composition more than 10.Its volume intrinsic impedance 80 ℃, during 60Hz greater than 1.0 * 10
9The temperature of Ω cm and display medium losstangenttan=1 is more than 80 ℃; During unusual the intensification; because short circuit between above-mentioned pair of conductors, protective resistance and the above-mentioned pair of conductors following the 2K Ω of heating are connected in series, and its two ends apply the above AC supply voltage of 200V; in the time of the detected temperatures signal, described outer volume conductor is also used as heater wire.
2, thermosensitive heating wire as claimed in claim 1, it is characterized in that, described polyamide copolymer synthetic rubber is the amide copolymer that replaces from the N of nylon 11 series that contains N-alkyl substituted amide unit or nylon 12 series, perhaps has in the ether amide copolymer of the nylon 11 series of epoxides unit or nylon 12 series to select at least a synthetic rubber.
3, thermosensitive heating wire as claimed in claim 1, it is characterized in that the phenol series thermoplastic resin of described average degree of polymerization more than 10 is by selecting at least a resin in alkylphenol-formaldehyde condensation products, hydroxybenzoate-formaldehyde condensation products and the polyhydroxy styrene.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19902291A JPH0547459A (en) | 1991-08-08 | 1991-08-08 | Heat sensitive heater wire |
| JP199022/91 | 1991-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1070508A true CN1070508A (en) | 1993-03-31 |
| CN1028686C CN1028686C (en) | 1995-05-31 |
Family
ID=16400823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105981 Expired - Fee Related CN1028686C (en) | 1991-08-08 | 1992-07-15 | Thermosensitive heating wire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0547459A (en) |
| CN (1) | CN1028686C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179703A (en) * | 2011-12-26 | 2013-06-26 | 香港塔祈巴那电器有限公司 | Wire type heating wire device |
| CN103179697A (en) * | 2011-12-22 | 2013-06-26 | 王清传 | Heating structure and method capable of preventing overheating of hot line |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100417501B1 (en) * | 2001-06-09 | 2004-02-11 | 이명신 | Temperature response type heater |
-
1991
- 1991-08-08 JP JP19902291A patent/JPH0547459A/en active Pending
-
1992
- 1992-07-15 CN CN 92105981 patent/CN1028686C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103179697A (en) * | 2011-12-22 | 2013-06-26 | 王清传 | Heating structure and method capable of preventing overheating of hot line |
| CN103179703A (en) * | 2011-12-26 | 2013-06-26 | 香港塔祈巴那电器有限公司 | Wire type heating wire device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1028686C (en) | 1995-05-31 |
| JPH0547459A (en) | 1993-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |