CN2453786Y - Controller for electric-heated blanket - Google Patents
Controller for electric-heated blanket Download PDFInfo
- Publication number
- CN2453786Y CN2453786Y CN 00244983 CN00244983U CN2453786Y CN 2453786 Y CN2453786 Y CN 2453786Y CN 00244983 CN00244983 CN 00244983 CN 00244983 U CN00244983 U CN 00244983U CN 2453786 Y CN2453786 Y CN 2453786Y
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- Prior art keywords
- circuit
- power
- temperature
- output
- controller
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- Expired - Fee Related
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- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 230000004927 fusion Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 4
- 238000005070 sampling Methods 0.000 abstract 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model relates to a controller for electric heating blankets, which is composed of a power supply circuit, a synchronous pulse circuit, a sampling circuit, a temperature regulating circuit, a pulse comparison output circuit, a power output circuit, and an over-temperature fusing protecting circuit. An insulating layer impedance which is positioned in a double-layer spiral temperature sensing heating wire dose not have special requirement, and then the safety temperature controlling electric heating blanket is easy to popularize. The over-temperature fusing protecting circuit adopts a non self-reset thermal cut-out which is connected with the power supply circuit and the sampling circuit in series, and then the safety of the electric heating blanket is enhanced. A heating filament of the double-layer spiral temperature sensing heating wire is connected with two loading terminals of the power output circuit, and the power output circuit outputs current in a positive-negative half-cycle of a commercial power, the power factor reaches to 1, and then the controller for electric heating blanket dose not have harmonic interference. A temperature sensing filament is connected with two input terminals of the sampling circuit.
Description
The utility model relates to a kind of electric blanket controller.
The safety temperature control electric blanket of Tui Chuing is having very much progress than common temperature-adjusting type electric blanket aspect the security in the market, has overcome personal safety or fire failure that electric blanket may cause because of local overheating.The heating line that it adopts is double-layer spiral temperature-sensitive heating line, and the inner insulating layer of double-layer spiral temperature-sensitive heating line is special semiconductor nylon material, the control principle of present this safety temperature control electric blanket is to utilize the impedance of inner insulating layer semiconductor nylon thermoplastic to vary with temperature and change, thus the power input size of control electric blanket.The control mode of this safety temperature control electric blanket requires double-layer spiral temperature-sensitive heating line inner insulating layer work in-process to keep very high dimensional accuracy, to guarantee the consistance of impedance, just can guarantee temperature controlled accuracy, thereby reach purpose of safety.Because this double-layer spiral temperature-sensitive heating line manufacture difficulty is bigger, this has just greatly limited promoting the use of of this kind safety temperature control electric blanket.If the inner insulating layer of double-layer spiral temperature-sensitive heating line can be changed into the molten soon thermoplastic of common nylon, just greatly reduce the manufacture difficulty of double-layer spiral temperature-sensitive heating line, guarantee simultaneously the security performance of safety temperature control electric blanket again, help promoting the use of of safety temperature control electric blanket like this.
It is the common nylon electric blanket controller that is complementary of the double-layer spiral temperature-sensitive heating line of molten thermoplastic soon that the purpose of this utility model provides a kind of novel and inner insulating layer.
A kind of electric blanket controller of the present utility model is made up of than output circuit, power output circuit, display circuit and overheat fusion holding circuit power circuit, clock circuit, sample circuit, temperature regulation circuit, ratio of pulse length to the total cycle length.Wherein, the input termination mains supply of power circuit, clock circuit is connected with the output terminal of power circuit; Sample circuit is connected with the output terminal of clock circuit, temperature regulation circuit is connected than output circuit with ratio of pulse length to the total cycle length, and ratio of pulse length to the total cycle length accesses the sample circuit output end than the output circuit input end simultaneously; Ratio of pulse length to the total cycle length is than output circuit output termination power output circuit control end; Display circuit inserts power circuit and power output circuit respectively; The overheat fusion holding circuit is serially connected with power circuit and sample circuit.Controller of the present utility model must use with the double-layer spiral temperature-sensitive heating line of ordinary hot plastic material as inner insulating layer when being connected with electric blanket.When carrying out the circuit connection, the heating wire of double-layer spiral temperature-sensitive heating line is connected with controller power output circuit two load ends, and the temperature-sensitive silk is connected with two input ends in the sample circuit.The temperature-sensitive silk of double-layer spiral temperature-sensitive heating line detects the temperature of sensing electric blanket in real time, its resistance varies with temperature has positive temperature coefficient (PTC), this signal reflects the variation of current potential in sample circuit, the current potential of this variation is sent into ratio of pulse length to the total cycle length and is compared with the setting current potential of temperature regulation circuit than output circuit, if this current potential is lower than the setting current potential, ratio of pulse length to the total cycle length is just exported trigger pulse than output circuit, because double-layer spiral temperature-sensitive heating line heating wire is connected with two output terminals of power output circuit, when the power output circuit control end has the trigger pulse input, positive-negative half-cycle at sine wave alternating current all forms conducting, at this moment heating wire has electric current to flow through, and electric blanket is in heated condition; Otherwise electric blanket is in not heated condition.Like this, this controller has just reached the purpose of control temperature.If overtemperature, i.e. local overheating, inner insulating layer melts fast between the heating wire of double-layer spiral temperature-sensitive heating line and temperature-sensitive silk, causes heating wire and temperature-sensitive wire connection to be touched.Line voltage directly puts on the temperature-sensitive silk, and this signal is delivered to sample circuit, and the bridge resistance, of sample circuit generates heat because of there being big electric current to flow through.Because non-automatic-reset thermal breaker and bridge resistance, thermal coupling closely in the overtemperature prote circuit; when the temperature of heating reaches non-automatic-reset thermal breaker operating temperature; the non-automatic-reset thermal breaker cuts off the major loop of power circuit; the controller dead electricity is not worked, and power output circuit does not have electric current output.Because of the non-automatic-reset thermal breaker can not automatically reset, electric blanket has permanently been cut off power path.The fire failure of so just having avoided the lasting rising of temperature to cause, thus the safety in utilization of electric blanket ensured.The power circuit of controller is supplied with low-voltage dc voltage, and to keep controller work, the while is to the synchronizing signal of clock circuit sine wave output alternating current; Temperature regulation circuit is the reference potential of regulating impulse comparison output circuit comparer in fact, to select the reference mark of electric blanket temperature.
A kind of electric blanket controller of the present utility model has not only overcome the drawback that existing safety temperature control electric blanket uses special material; Simultaneously, because power output circuit is at the equal output current of the positive-negative half-cycle of sine wave alternating current, its power factor reaches COS φ=1, no harmonic interference, efficient height; Increase the overheat fusion holding circuit, and adopted the non-automatic-reset thermal breaker, further improved the reliability of electric blanket security aspect.
Below in conjunction with accompanying drawing this utility model is described further.
Fig. 1 is a kind of circuit theory diagrams of electric blanket controller.
As shown in Figure 1, power circuit comprises double-point double-throw switch F1, K, R1, D1, D2, DW1, C1, C2, R2; Clock circuit is made up of D3, R4, R3, R5, A1, D4; Sample circuit is made up of R10, R8, S (the temperature-sensitive silk of double-layer spiral temperature-sensitive heating line); Temperature regulation circuit is made up of R6, D5, R7, RW1, RW2, R17; Ratio of pulse length to the total cycle length is made up of R18, R19, A2, R20, A3, R9, D6, R11, D7, R12 than output circuit; Power output circuit is made up of D8, V1, D9, C3, D11, R15, R16, D10, V2, C4, H (heating wire of double-layer spiral temperature-sensitive heating line); Display circuit is made up of R13, L1, R14, L3; The non-automatic-reset thermal breaker F2 of overtemperature prote circuit is serially connected in the major loop of power circuit, and R10, R8 are the part of sample circuit, is again the overtemperature prote network component simultaneously.
When using the controller of present embodiment, the temperature-sensitive silk of double-layer spiral temperature-sensitive heating line is connected with 2 of a, b, and heating wire is connected with 2 of c, d.When controller is worked, civil power is through power circuit R1 step-down, D1, DW1, C1 produces low-voltage dc power supply and supplies with the required working power of controller, while C2, R2 exports and the synchronous pulse of civil power sine wave alternating current to clock circuit by D3, and by R4, R3, R5, A1, deliver to sample circuit after the D4 shaping, the reference potential given with temperature regulation circuit carries out current potential relatively at comparer A2, when if the detected temperature of temperature-sensitive silk makes current potential Va be lower than reference potential, comparer A2 output and the synchronous pulse of civil power, by R9, R11, D7, R12 exports the control end of power output circuit to, and controllable silicon V1 obtains trigger pip and forms conducting jointly at the positive half cycle and the D10 of alternating current; C3 is recharged simultaneously, and the C3 discharge triggers controllable silicon V2 conducting, also conducting of D8 simultaneously when negative half period.Like this, power output circuit all provides heating current to heating wire in the positive-negative half-cycle of alternating current, i.e. the all-wave way of output.When the detected temperature of temperature-sensitive silk makes current potential Va be higher than reference potential, comparer A2 no-output, power output circuit is no-output also.If because of non-normal working appears in certain reason electric blanket, to form abnormal high temperature in the part of electric blanket, to make the temperature-sensitive silk of double-layer spiral temperature-sensitive heating line and the fast molten thermoplastic plastic layer between heating wire, promptly inner insulating layer melts fast, and electrically contacting appears in temperature-sensitive silk and heating wire.A point current potential Va is reduced to and is lower than Ve, and A3 has clamped down on trigger pulse output, the power output circuit no-output, and electric blanket stops heating; R10, R8 cause rapid heating because of flowing through big electric current simultaneously, and when the temperature of heating reached the operating temperature of non-automatic-reset thermal breaker F2, F2 was the permanent path that has cut off civil power and power circuit, have realized the local overheating protection of electric blanket.Therefore, have inner insulating layer and be common nylon soon the electric blanket of the double-layer spiral temperature-sensitive heating line of molten thermoplastic use this controller, the Controllable Temperature of its electric blanket, and reached purpose of safety.
Claims (3)
1. an electric blanket controller is made up of than output circuit, power output circuit, display circuit and overheat fusion holding circuit power circuit, clock circuit, sample circuit, temperature regulation circuit, ratio of pulse length to the total cycle length, the input termination mains supply of power circuit, clock circuit is connected with the output terminal of power circuit; Get that auspicious circuit is connected with the output terminal of clock circuit, temperature regulation circuit is connected than output circuit with ratio of pulse length to the total cycle length, ratio of pulse length to the total cycle length accesses the sample circuit output end than the output circuit input end simultaneously; Ratio of pulse length to the total cycle length is than output circuit output termination power output circuit control end; Display circuit inserts power circuit and power output circuit respectively; The overheat fusion holding circuit is serially connected with power circuit and sample circuit; The heating wire of electric blanket double-layer spiral temperature-sensitive heating line is connected with controller power output circuit two load ends, and the temperature-sensitive silk is connected with two input ends in the sample circuit.
2. electric blanket controller as claimed in claim 1 is characterized in that the positive-negative half-cycle of power output circuit sine wave output alternating current.
3. electric blanket controller as claimed in claim 1 is characterized in that using the overheat fusion circuit of non-automatic-reset thermal breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244983 CN2453786Y (en) | 2000-11-15 | 2000-11-15 | Controller for electric-heated blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244983 CN2453786Y (en) | 2000-11-15 | 2000-11-15 | Controller for electric-heated blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453786Y true CN2453786Y (en) | 2001-10-17 |
Family
ID=33604559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244983 Expired - Fee Related CN2453786Y (en) | 2000-11-15 | 2000-11-15 | Controller for electric-heated blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453786Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1925699B (en) * | 2006-11-02 | 2010-11-03 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN102871454A (en) * | 2012-10-08 | 2013-01-16 | 李文忠 | Heat-accumulation electromagnetic-heating warm mattress |
| WO2015196355A1 (en) * | 2014-06-24 | 2015-12-30 | 东莞市光为电器有限公司 | Thermostatic control circuit for electric blanket and heating pad |
-
2000
- 2000-11-15 CN CN 00244983 patent/CN2453786Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1925699B (en) * | 2006-11-02 | 2010-11-03 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN102871454A (en) * | 2012-10-08 | 2013-01-16 | 李文忠 | Heat-accumulation electromagnetic-heating warm mattress |
| WO2015196355A1 (en) * | 2014-06-24 | 2015-12-30 | 东莞市光为电器有限公司 | Thermostatic control circuit for electric blanket and heating pad |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Patentee address after: Chengdu City, Sichuan province 610045 Wuhou Avenue along the River No. 73 Patentee address before: 610061, Ju Bixiu, No. six, south section of first ring road, Sichuan, Chengdu |
|
| 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 |