CN202959766U - Automatic control whole line protection electric blanket - Google Patents
Automatic control whole line protection electric blanket Download PDFInfo
- Publication number
- CN202959766U CN202959766U CN 201220689766 CN201220689766U CN202959766U CN 202959766 U CN202959766 U CN 202959766U CN 201220689766 CN201220689766 CN 201220689766 CN 201220689766 U CN201220689766 U CN 201220689766U CN 202959766 U CN202959766 U CN 202959766U
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- layer metal
- metal silk
- inner layer
- electrode
- silicon controlled
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Abstract
The utility model discloses an automatic control whole line protection electric blanket which comprises a blanket body, a double-helix heating wire and a temperature controller. The double-helix heating wire comprises an inner layer metal wire, a fusible insulation medium layer and an outer layer metal wire. The temperature controller comprises a silicon controlled rectifier, an adjustable resistor, a bidirectional trigger diode, a capacitor and a short circuit protection diode. A second electrode of the silicon controlled rectifier is connected with one end of a power source, a first electrode of the silicon controlled rectifier is connected with one end of the inner layer metal wire, and the other end of the inner layer metal wire is connected with the other end of the power source. One end of the adjustable resistor is connected with the second electrode of the silicon controlled rectifier, the other end of the adjustable resistor is connected with one end of the bidirectional trigger diode, and the other end of the bidirectional trigger diode is connected with a control electrode of the silicon controlled rectifier. The outer layer metal wire is connected with a connection point of the adjustable resistor and a bidirectional trigger diode, one end of the capacitor is connected with the outer layer metal wire, and the other end of the capacitor is connected with the inner layer metal wire. When the temperature at a partial part is high, the electric blanket can automatically lower the temperature so that components are not damaged, and maintenance cost is reduced.
Description
Technical field
The utility model belongs to the electric-heating technology field, is specifically related to a kind of automatic control road protection completely electric blanket.
Background technology
At present, the mode that the temperature control of domestic electric blanket and safeguard protection are mainly adopted is: the resistance-temperature characteristic that utilizes the outer layer metal silk of double helix line with heating function, obtain the voltage signal corresponding with temperature in the process of inner layer metal silk heating power, by the control circuit amplification ratio, the output of control controllable silicon reaches the temperature control effect to electric blanket; Utilize the short characteristic of melting range of the fusible spacer medium layer of double helix line with heating function; when the situation such as folding, wrinkling causes that local temperature is higher because various reason causes when electric blanket; the very fast melting of fusible spacer medium layer; make inner layer metal silk and outer layer metal silk contact short circuit; allow the weak component wear of control circuit internal preset; the output of controllable silicon no current; inner layer metal silk no current; the electric blanket heating of no longer switching on; avoid the blanket body on fire because local temperature continues to raise, reach the safeguard protection to electric blanket.The weak point of this mode is: the control circuit more complicated, and production cost is higher; When carrying out safeguard protection, the weak element in control circuit damages, must send the production unit maintenance, makes troubles to the user, has also increased maintenance cost simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of automatic control road protection completely electric blanket, with when the electric blanket local temperature is higher, can automatically reduces its temperature and need not damage element, reduces maintenance cost.
automatic control described in the utility model road protection completely electric blanket, comprise the blanket body, be arranged in double helix line with heating function in blanket body drawing lines, with the temperature controller that the double helix line with heating function is connected, described double helix line with heating function by the terylene heart yearn, be spirally wound on inner layer metal silk on the terylene heart yearn, be coated on the fusible spacer medium layer of terylene heart yearn and inner layer metal silk outside, the outer layer metal silk that is spirally wound on fusible spacer medium layer outside, the insulating protective layer that is coated on fusible spacer medium layer and outer layer metal silk outside consist of, described temperature controller comprises controllable silicon, adjustable resistance, bidirectional trigger diode, electric capacity and short-circuit protection diode, second electrode of described silicon controlled connects an end of power supply, first electrode connects an end of inner layer metal silk, the other end of another termination power of inner layer metal silk, described short-circuit protection diodes in parallel is at the two ends of inner layer metal silk, its negative pole connects the tie point of controllable silicon and inner layer metal silk, second electrode of a termination silicon controlled of described adjustable resistance, one end of another termination bidirectional trigger diode, another termination silicon controlled of bidirectional trigger diode is controlled the utmost point, described outer layer metal silk connects the tie point of adjustable resistance and bidirectional trigger diode, one termination outer layer metal silk of described electric capacity, another termination inner layer metal silk, the outer layer metal silk, fusible spacer medium layer, the inner layer metal silk forms variable capacitance and the variable resistor with Capacitance parallel connection.
The circuit of the temperature characteristics of capacitance that the double helix line with heating function has and resistance-temperature characteristic and temperature controller together produces temperature automatically controlled effect.
Further, described controllable silicon is one-way SCR, the anode that second electrode of described silicon controlled is one-way SCR, and first electrode is the negative electrode of one-way SCR, described power supply is the direct current of AC220V alternating current after the bridge rectifier rectification.
Further, described controllable silicon is bidirectional triode thyristor, the second plate that second electrode of described silicon controlled is bidirectional triode thyristor, and first electrode is the first anode of bidirectional triode thyristor, described power supply is the AC220V alternating current.
Further, described fusible spacer medium layer has the resistance negative temperature characteristic.
Of the present utility model temperature automatically controlled and the safeguard protection principle is as follows:
when energising, power supply by adjustable resistance to capacitor charging, when the voltage at electric capacity two ends reaches the conducting voltage of bidirectional trigger diode, the bidirectional trigger diode conducting, the voltage at electric capacity two ends is added in silicon controlled control and extremely goes up, controlled silicon conducting, the inner layer metal silk obtains electric current and begins heating, in the process of heating, the temperature of electric blanket constantly raises, when its temperature reaches design temperature (this design temperature is realized by regulating adjustable resistance), by the outer layer metal silk, fusible spacer medium layer, the capacitance of the variable capacitance that the inner layer metal silk forms increases thereupon, by adjustable resistance, the time that discharges and recharges of the RC charge-discharge circuit that electric capacity and variable capacitance consist of increases, the silicon controlled angle of flow reduces, the silicon controlled output current reduces, the electric current that the inner layer metal silk obtains reduces, heating power is reduced, thereby realize temperature automatically controlled function.
When because electric blanket is folding, wrinkling etc. when abnormal condition causes that local temperature is higher, the capacitance of variable capacitance increases fast, variable-resistance resistance reduces gradually simultaneously, the silicon controlled phase shift is triggered over 180 °, the output of controllable silicon no current, inner layer metal silk no current, electric blanket no longer continue heating, after temperature reduces or after the abnormal condition releasing, electric blanket recovers again to work.When causing the temperature of electric blanket further to raise due to other abnormal causes; before arrival burns out electric blanket blanket body; the at high temperature melting of fusible spacer medium layer; inner layer metal silk and outer layer metal silk contact short circuit (being that the variable resistor resistance is zero); silicon controlled is controlled between the utmost point and first electrode without forward bias; the controllable silicon cut-off; no current in the inner layer metal silk; electric blanket no longer heats; avoided electric blanket too high and on fire because of local temperature; reached the effect of safeguard protection, need to take maintenace point maintenance and afterwards could use when using next time.
The utlity model has following effect: (1) control circuit is simple, practical and reliable, production cost can reduce by 30%～40% compared to existing technology; (2) when the electric blanket local temperature is higher, can automatically reduce its temperature and need not damage element, after abnormal condition was removed, electric blanket can recover again normal operation, has avoided maintenance, thereby has reduced maintenance cost; (3) too high in the electric blanket local temperature, arrive burn out electric blanket blanket body before, the melting by fusible spacer medium layer makes inner layer metal silk and outer layer metal silk contact short circuit, and electric blanket is no longer heated, and has reached the safeguard protection effect.
Description of drawings
Fig. 1 is the structural representation of double helix line with heating function in the utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the first control circuit figure of the present utility model.
Fig. 4 is the second control circuit figure of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
embodiment 1: as Fig. 1, Fig. 2, automatic control shown in Figure 3 road protection completely electric blanket, comprise blanket body 6, be arranged in the interior double helix line with heating function 7 of drawing lines of blanket body 6, the temperature controller 8 that is connected with double helix line with heating function 7, wherein, double helix line with heating function 7 is by terylene heart yearn 1, be spirally wound on the inner layer metal silk 2 on terylene heart yearn 1, be coated on the fusible spacer medium layer 3 of terylene heart yearn 1 and inner layer metal silk 2 outsides, be spirally wound on the outer layer metal silk 4 of fusible spacer medium layer 3 outside, the insulating protective layer 5 that is coated on fusible spacer medium layer 3 and outer layer metal silk 4 outsides consists of, fusible spacer medium layer 3 is for having the nylon material of resistance negative temperature characteristic, temperature controller 8 comprises bridge rectifier D 1～D4, the first resistance R 1, LED 1(is used for showing the electric blanket "on" position), unidirectional controllable silicon S CR1, the first adjustable resistance RW1, the second adjustable resistance RW2, the second resistance R 2, the 3rd resistance R 3, diode D5, bidirectional trigger diode DIAC, capacitor C 1, short-circuit protection diode D7, wherein, one end of the first resistance R 1 connects the phase line of AC220V alternating current by bridge rectifier D 1～D4, the positive pole of other end sending and receiving optical diode LED1, the negative pole of LED 1 connects the zero line of AC220V alternating current by bridge rectifier D 1～D4, the anode of unidirectional controllable silicon S CR1 connects the phase line of AC220V alternating current by bridge rectifier D 1～D4, negative electrode connects an end of inner layer metal silk 2, the negative pole of the other end sending and receiving optical diode LED1 of inner layer metal silk 2, short-circuit protection diode D7 is connected in parallel on the two ends of inner layer metal silk 2, its negative pole order is to the tie point of controllable silicon SCR 1 with inner layer metal silk 2, the second resistance R 2, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd resistance R 3 series connection, the anode of one termination unidirectional controllable silicon S CR1 of the second resistance R 2, the positive pole of one terminating diode D5 of the 3rd resistance R 3, the negative pole of diode D5 connects the end of bidirectional trigger diode DIAC, the other end order of bidirectional trigger diode DIAC is to the control utmost point of controllable silicon SCR 1, outer layer metal silk 4 connects the tie point of the 3rd resistance R 3 and diode D5, one termination outer layer metal silk 4 of capacitor C 1, another termination inner layer metal silk 2, outer layer metal silk 4, fusible spacer medium layer 3, inner layer metal silk 2 forms variable capacitance C0 and the variable resistor R0 in parallel with capacitor C 1.
it is temperature automatically controlled and the safeguard protection principle is as follows: when energising, power supply is by the second resistance R 2, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd resistance R 3 gives capacitor C 1 charging, when the voltage at capacitor C 1 two ends reaches the conducting voltage of diode D5 and bidirectional trigger diode DIAC, bidirectional trigger diode DIAC conducting, the voltage at capacitor C 1 two ends is added in the control of unidirectional controllable silicon S CR1 and extremely goes up, unidirectional controllable silicon S CR1 conducting, inner layer metal silk 2 obtains electric current and begins heating, in the process of heating, the temperature of electric blanket constantly raises, when its temperature reaches design temperature (this design temperature is realized by regulating the second adjustable resistance RW2), by outer layer metal silk 4, fusible spacer medium layer 3, the capacitance of the variable capacitance C0 that inner layer metal silk 2 forms increases thereupon, by the second resistance R 2, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd resistance R 3, the time that discharges and recharges of the RC charge-discharge circuit that capacitor C 1 and variable capacitance C0 consist of increases, the angle of flow of unidirectional controllable silicon S CR1 reduces, the output current of unidirectional controllable silicon S CR1 reduces, the electric current that inner layer metal silk 2 obtains reduces, heating power is reduced, thereby realize temperature automatically controlled function.The adjusting head of the first adjustable resistance RW1 is arranged on temperature controller 8 outsides, and the user can regulate the suitable high and low temperature of electric blanket by this adjusting head.
When because electric blanket is folding, wrinkling etc. when abnormal condition causes that local temperature is higher, fusible spacer medium layer 3 partial melting, the capacitance of variable capacitance C0 increases fast, the resistance of variable resistor R0 reduces gradually simultaneously, the phase shift of unidirectional controllable silicon S CR1 is triggered over 180 °, the output of unidirectional controllable silicon S CR1 no current, inner layer metal silk 2 no currents, electric blanket no longer continues heating, and after temperature reduces or after the abnormal condition releasing, electric blanket recovers again to work.when causing the temperature of electric blanket further to raise due to other abnormal causes, burn out the blanket body 6 of electric blanket in arrival before, the at high temperature melting of fusible spacer medium layer 3, inner layer metal silk 2 and outer layer metal silk 4 contact short circuits (resistance that is variable resistor R0 is zero), between the control utmost point of unidirectional controllable silicon S CR1 and negative electrode without forward bias, unidirectional controllable silicon S CR1 cut-off, no current in inner layer metal silk 2, electric blanket no longer heats, avoided electric blanket on fire when too high because of local temperature, reached the effect of safeguard protection, next time is when using, could use after need to taking the maintenace point maintenance.
embodiment 2: as Fig. 1, Fig. 2, automatic control shown in Figure 4 road protection completely electric blanket, its temperature controller 8 is identical with most contents in embodiment 1, difference is, that adopt in embodiment 2 is bidirectional triode thyristor SCR2, it directly is connected with the AC220V alternating current, and do not need rectification, one end of its first resistance R 1 directly connects the phase line of AC220V alternating current, the positive pole of other end sending and receiving optical diode LED1, the negative pole of LED 1 directly connects the zero line of AC220V alternating current, the second plate of bidirectional triode thyristor SCR2 directly connects the phase line of AC220V alternating current, the first anode connects an end of inner layer metal silk 2, the other end of inner layer metal silk 2 directly connects the zero line of AC220V alternating current, short-circuit protection diode D7 is connected in parallel on the two ends of inner layer metal silk 2, its negative pole connects the tie point of bidirectional triode thyristor SCR2 and inner layer metal silk 2, the second resistance R 2, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd resistance R 3 series connection, the second plate of one termination bidirectional triode thyristor SCR2 of the second resistance R 2, the positive pole of one terminating diode D5 of the 3rd resistance R 3, the negative pole of diode D5 connects the end of bidirectional trigger diode DIAC, the control utmost point of another termination bidirectional triode thyristor SCR2 of bidirectional trigger diode DIAC, outer layer metal silk 4 connects the tie point of the 3rd resistance R 3 and diode D5, one termination outer layer metal silk 4 of capacitor C 1, another termination inner layer metal silk 2, outer layer metal silk 4, fusible spacer medium layer 3, inner layer metal silk 2 forms variable capacitance C0 and the variable resistor R0 in parallel with capacitor C 1.
It is temperature automatically controlled and the safeguard protection principle is identical with embodiment 1.
Claims (4)
1. automatically control the electric blanket of road protection completely for one kind, comprise blanket body (6), be arranged in the double helix line with heating function (7) in blanket body drawing lines, the temperature controller (8) that is connected with the double helix line with heating function, described double helix line with heating function (7) is by terylene heart yearn (1), be spirally wound on the inner layer metal silk (2) on the terylene heart yearn, be coated on the fusible spacer medium layer (3) of terylene heart yearn and inner layer metal silk outside, be spirally wound on the outer layer metal silk (4) of fusible spacer medium layer outside, the insulating protective layer (5) that is coated on fusible spacer medium layer and outer layer metal silk outside consists of, it is characterized in that:
described temperature controller (8) comprises controllable silicon, adjustable resistance, bidirectional trigger diode (DIAC), electric capacity (C1) and short-circuit protection diode (D7), second electrode of described silicon controlled connects an end of power supply, first electrode connects an end of inner layer metal silk (2), the other end of another termination power of inner layer metal silk (2), described short-circuit protection diode (D7) is connected in parallel on the two ends of inner layer metal silk (2), its negative pole connects the tie point of controllable silicon and inner layer metal silk (2), second electrode of a termination silicon controlled of described adjustable resistance, one end of another termination bidirectional trigger diode (DIAC), another termination silicon controlled of bidirectional trigger diode (DIAC) is controlled the utmost point, described outer layer metal silk (4) connects the tie point of adjustable resistance and bidirectional trigger diode (DIAC), one termination outer layer metal silk (4) of described electric capacity (C1), another termination inner layer metal silk (2), outer layer metal silk (4), fusible spacer medium layer (3), inner layer metal silk (2) forms variable capacitance (C0) and the variable resistor (R0) in parallel with electric capacity (C1).
2. automatic control according to claim 1 is protected electric blanket in the road completely; it is characterized in that: described controllable silicon is one-way SCR (SCR1); the anode that second electrode of described silicon controlled is one-way SCR (SCR1); first electrode is the negative electrode of one-way SCR (SCR1), and described power supply is the AC220V alternating current through the bridge rectifier (direct current after the rectification of D1 ~ D4).
3. automatic control according to claim 1 is protected electric blanket in the road completely; it is characterized in that: described controllable silicon is bidirectional triode thyristor (SCR2); the second plate that second electrode of described silicon controlled is bidirectional triode thyristor (SCR2); first electrode is the first anode of bidirectional triode thyristor (SCR2), and described power supply is the AC220V alternating current.
4. according to claim 1 and 2 or 3 described automatic controls are protected electric blankets in the road completely, and it is characterized in that: described fusible spacer medium layer (3) has the resistance negative temperature characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689766 CN202959766U (en) | 2012-12-13 | 2012-12-13 | Automatic control whole line protection electric blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689766 CN202959766U (en) | 2012-12-13 | 2012-12-13 | Automatic control whole line protection electric blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202959766U true CN202959766U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220689766 Expired - Fee Related CN202959766U (en) | 2012-12-13 | 2012-12-13 | Automatic control whole line protection electric blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202959766U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109527873A (en) * | 2018-09-29 | 2019-03-29 | 浙江想能睡眠科技股份有限公司 | A kind of double helix heating wire heating mattress of soft or hard intelligence control |
| CN112954835A (en) * | 2021-02-01 | 2021-06-11 | 北海翰博士科技有限公司 | Conductive metal film with heating function |
-
2012
- 2012-12-13 CN CN 201220689766 patent/CN202959766U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109527873A (en) * | 2018-09-29 | 2019-03-29 | 浙江想能睡眠科技股份有限公司 | A kind of double helix heating wire heating mattress of soft or hard intelligence control |
| CN112954835A (en) * | 2021-02-01 | 2021-06-11 | 北海翰博士科技有限公司 | Conductive metal film with heating function |
| CN112954835B (en) * | 2021-02-01 | 2023-03-17 | 北海翰博士科技有限公司 | Conductive metal film with heating function |
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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: 20130605 Termination date: 20201213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |