CN202979315U - Over-temperature protection controller for flexible heating device - Google Patents
Over-temperature protection controller for flexible heating device Download PDFInfo
- Publication number
- CN202979315U CN202979315U CN2012206689796U CN201220668979U CN202979315U CN 202979315 U CN202979315 U CN 202979315U CN 2012206689796 U CN2012206689796 U CN 2012206689796U CN 201220668979 U CN201220668979 U CN 201220668979U CN 202979315 U CN202979315 U CN 202979315U
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- CN
- China
- Prior art keywords
- temperature
- heating device
- over
- controller
- flexible heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 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
- H05B1/0227—Applications
- H05B1/0288—Applications for non specified applications
- H05B1/0294—Planar elements
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- Control Of Resistance Heating (AREA)
Abstract
An over-temperature protection controller for a flexible heating device consists of a protective tube FX, a power switch K, diodes (D1, D2), a light emitting diode LED and a resistor R connected with each other in a specific manner. Two ends of an output line of the controller are connected with two ends of a heating filament. One end of a temperature-sensitive filament is vacancy and the other end is connected with one end of a heating wire. During operation, when a local temperature of the flexible heating device is very high caused by folding and wrinkling conditions due to various reasons, the flexible heating device immediately starts an automatic protection function, so that a local over-temperature part isn't heated or is cut off the power supply. Fire caused by the continuous rise of the local temperature can be avoided to achieve a safe purpose. The controller provided by the utility model has the advantages of a simple structure, reliable operation and a good safe performance and can preferably avoid generation of an abnormal over-temperature danger.
Description
Technical field
The utility model belongs to field of household appliances, relates to a kind of overtemperature prote controller for the flexible heater tool.
Background technology
The flexible heater tools such as the electric blanket on the existing market, electric pad are a kind of widely used economic and practical warming appliances, but not only circuit structure is complicated to be used on these flexible heater tools controller, and in use usually because the reasons such as flexible heater tool fold cause the local dangerous phenomenon of abnormal overtemperature that occurs of flexible heater tool, making the flexible heater tool can produce heat melts or burns, then cause that the bedding burning is on fire, cause fire.
Summary of the invention:
A kind of overtemperature prote controller for the flexible heater tool that the utility model designs for above deficiency just.
Not only simple in structure but also can avoid effectively that abnormal overtemperature that a variety of causes causes is dangerous to be occured.
The utility model is by protective tube F
X, mains switch K, diode (D1, D2), LED, resistance R form by specific connected mode.The output line two ends of described controller and the two ends of heating wire are connected, and an end of temperature-sensitive silk is vacant, and the other end is connected with an end of heating wire.
Switch on power, the flexible heater tool is started working, because an end of temperature-sensitive silk is unsettled, this moment, electric current did not flow through the temperature-sensitive silk.When heating wire caused abnormal overtemperature because of reasons such as flexible heater tool fold, between its heating wire and temperature-sensitive silk, the temperature-sensitive insulating barrier melted immediately, and the fusing of temperature-sensitive insulating barrier just makes the temperature-sensitive silk heating wire overtemperature partial short circuit.Because every meter resistance of heating wire is larger, and every meter resistance of temperature-sensitive silk is less, after heating wire overtemperature part is by the short circuit of temperature-sensitive silk, electric current flows through from the temperature-sensitive silk, makes on the one hand heating wire by the no longer heating of short circuit part, makes on the other hand the electric current in circuit loop increase a lot, current limliting protective tube in controller is had an effect, power supply is cut off, and the flexible heater tool quits work, thereby has avoided the generation of abnormal overtemperature danger.
The utility model is simple in structure, reliable operation, and security performance is good, can avoid better the generation of abnormal overtemperature danger.
Further illustrate the utility model below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is structural representation of the present utility model
Fig. 2 is circuit connection diagram of the present utility model
Embodiment
Referring to Fig. 1, Fig. 2, the utility model is by protective tube F
X, mains switch K, diode (D1, D2), LED, resistance R consist of by annexation shown in Figure 2, the output line two ends of the two ends of described heating wire 7 and controller 6 are connected, one end of temperature-sensitive silk 9 is unsettled, and the other end is connected with an end of heating wire 7.
Switch on power, the flexible heater tool is started working, because an end of temperature-sensitive silk 9 is unsettled, this moment, electric current did not flow through temperature-sensitive silk 9.When heating wire 7 caused abnormal overtemperature because of reasons such as flexible heater tool fold, between its heating wire 7 and temperature-sensitive silk 9, temperature-sensitive insulating barrier 8 melted immediately, and the fusing of temperature-sensitive insulating barrier 8 just makes temperature-sensitive silk 9 heating wire 7 overtemperature partial short circuits.Because heating wire 7 every meter resistances are larger, and temperature-sensitive silk 9 every meter resistances are less, after heating wire 7 overtemperature parts are by 9 short circuits of temperature-sensitive silk, electric current flows through from temperature-sensitive silk 9, make on the one hand heating wire 7 by the no longer heating of short circuit part, electric current in circuit loop is increased a lot, the current limliting protective tube F in controller
XHave an effect, power supply is cut off, and the flexible heater tool quits work.
Claims (1)
1. overtemperature prote controller that is used for the flexible heater tool is by protective tube F
X, mains switch K, diode (D1, D2), LED, resistance R form by specific connected mode, it is characterized in that the output line two ends of described controller and the two ends of heating wire are connected, one end of temperature-sensitive silk is vacant, and the other end is connected with an end of heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206689796U CN202979315U (en) | 2012-12-07 | 2012-12-07 | Over-temperature protection controller for flexible heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206689796U CN202979315U (en) | 2012-12-07 | 2012-12-07 | Over-temperature protection controller for flexible heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979315U true CN202979315U (en) | 2013-06-05 |
Family
ID=48520330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206689796U Expired - Lifetime CN202979315U (en) | 2012-12-07 | 2012-12-07 | Over-temperature protection controller for flexible heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979315U (en) |
-
2012
- 2012-12-07 CN CN2012206689796U patent/CN202979315U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |