CN201551012U - Novel electrically heated blanket - Google Patents
Novel electrically heated blanket Download PDFInfo
- Publication number
- CN201551012U CN201551012U CN2009202439380U CN200920243938U CN201551012U CN 201551012 U CN201551012 U CN 201551012U CN 2009202439380 U CN2009202439380 U CN 2009202439380U CN 200920243938 U CN200920243938 U CN 200920243938U CN 201551012 U CN201551012 U CN 201551012U
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- Prior art keywords
- electrically heated
- temperature
- blanket
- double
- wire
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- 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.)
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Abstract
A novel electrically heated blanket relates to the field of household appliances and comprises a blanket body, a double-layered spiral heating line which is fixed in the blanket body and comprises an electrically heated wire and a temperature sensing wire, and a controller connected with the double-layered spiral heating line and provided with a current-limiting device, wherein two ends of the electrically heated wire of the double-layered spiral heating line are connected with two ends of an output line of the controller; and one end of the temperature sensing wire is arranged overhead, and the other end is connected with one end of the electrically heated wire. In operation, when the excess local temperature is caused by conditions of folding, wrinkling and the like of the electrically heated blanket due to various reasons, the electrically heated blanket immediately starts the automatic protection function so as not to allow the over-temperature part of the electrically heated wire to heat or cut off a power supply, therefore, the fire breakout caused by the continuous increase of the local temperature of the blanket body is avoided, and the safety purpose is achieved. The utility model has the advantages of simple structure, reliable operation and good safety performance, and can better avoid the abnormal over-temperature risk.
Description
Technical field
The utility model relates to a kind of new electrically heating blanket in the household appliance technical field.
Background technology
Electric blanket is a kind of widely used economic and practical warming appliance, but general temperature-adjusting type electric blanket is the circuit structure complexity not only, and in use usually owing to reasons such as electric blanket fold cause the local dangerous phenomenon of unusual overtemperature that occurs of electric blanket, blanket cognition generation heat is melted or is burnt, then cause that the bedding burning is on fire, cause fire.
Summary of the invention:
A kind of not only simple in structure but also dangerous new electrically heating blanket that takes place of unusual overtemperature that can effectively avoid a variety of causes to cause that the technical solution of the utility model designs in order to overcome the above problems just.
The utility model is made up of with the controller that has current-limiting apparatus that is connected with the double-layer spiral heating line blanket body, the double-layer spiral heating line that is fixed in the blanket body, the double-layer spiral heating line by heating wire, temperature-sensitive silk and be located at heating wire and the temperature-sensitive silk between the temperature-sensitive insulating barrier constitute, controller is by protective tube F
X, power switch K, diode (D1, D2), LED, resistance R form by specific connected mode.The output line two ends of the two ends of the heating wire of described double-layer spiral heating line and controller link to each other, and an end of temperature-sensitive silk is vacant, and the other end links to each other with an end of heating wire.
Connect power supply, electric blanket is started working, because an end of the temperature-sensitive silk on the double-layer spiral heating line is unsettled, this moment, electric current did not flow through the temperature-sensitive silk.When the heating wire on the double-layer spiral heating line caused unusual overtemperature because of reasons such as electric blanket fold, the temperature-sensitive insulating barrier melted immediately in its double-layer spiral heating line, 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 bigger, 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 heating wire by the no longer heating of short circuit part on the one hand, makes the electric current in the circuit loop increase a lot on the other hand, current limliting protective tube in the controller is had an effect, power supply is cut off, and electric blanket quits work, thereby has avoided the generation of unusual overtemperature danger.
The utility model is simple in structure, reliable operation, and security performance is good, can avoid the generation of unusual overtemperature danger better.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a circuit connection diagram of the present utility model
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model is made up of with the controller that has current-limiting apparatus 6 that is connected with the double-layer spiral heating line blanket body 1, the double-layer spiral heating line 2 that contains heating wire and temperature-sensitive silk that is fixed in the blanket body 1, and controller 6 is by protective tube F
X, power switch K, diode (D1, D2), LED, resistance R constitute by annexation shown in Figure 2, double-layer spiral heating line 2 by heating wire 7, temperature-sensitive silk 9 and be located at heating wire and the temperature-sensitive silk between temperature-sensitive insulating barrier 8 constitute, the two ends of the heating wire 7 of described heating line link to each other with the output line two ends of controller 6, one end of temperature-sensitive silk 9 is unsettled, and the other end links to each other with an end of heating wire 7.
Connect power supply, electric blanket is started working, because an end of the temperature-sensitive silk 9 on the double-layer spiral heating line 2 is unsettled, this moment, electric current did not flow through temperature-sensitive silk 9.When the heating wire on the double-layer spiral heating line 27 caused unusual overtemperature because of reasons such as electric blanket fold, temperature-sensitive insulating barriers 8 melted immediately in its double-layer spiral heating line 2, 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 bigger, and temperature-sensitive silk 9 every meter resistances are less, after heating wire 7 overtemperatures part is by 9 short circuits of temperature-sensitive silk, electric current flows through from temperature-sensitive silk 9, make heating wire 7 by the no longer heating of short circuit part on the one hand, make the electric current in the circuit loop increase much the current limliting protective tube F in the controller on the other hand
XHave an effect, power supply is cut off, and electric blanket quits work.
Claims (1)
1. new electrically heating blanket, form with the controller that has current-limiting apparatus that is connected with the double-layer spiral heating line by blanket body, the double-layer spiral heating line that contains heating wire and temperature-sensitive silk that is fixed in the blanket body, it is characterized in that: the output line two ends of the two ends of the heating wire of described double-layer spiral heating line and controller link to each other, one end of temperature-sensitive silk is vacant, and the other end links to each other with an end of heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202439380U CN201551012U (en) | 2009-12-11 | 2009-12-11 | Novel electrically heated blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202439380U CN201551012U (en) | 2009-12-11 | 2009-12-11 | Novel electrically heated blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201551012U true CN201551012U (en) | 2010-08-18 |
Family
ID=42610687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202439380U Expired - Fee Related CN201551012U (en) | 2009-12-11 | 2009-12-11 | Novel electrically heated blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201551012U (en) |
-
2009
- 2009-12-11 CN CN2009202439380U patent/CN201551012U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20111211 |