CN2696256Y - Electric blanket with overtemperature protection device - Google Patents
Electric blanket with overtemperature protection device Download PDFInfo
- Publication number
- CN2696256Y CN2696256Y CN 200420034724 CN200420034724U CN2696256Y CN 2696256 Y CN2696256 Y CN 2696256Y CN 200420034724 CN200420034724 CN 200420034724 CN 200420034724 U CN200420034724 U CN 200420034724U CN 2696256 Y CN2696256 Y CN 2696256Y
- Authority
- CN
- China
- Prior art keywords
- diode
- electric blanket
- switch
- protection device
- temperature
- 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 - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 abstract description 4
- 230000001012 protector Effects 0.000 abstract 3
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
An electric blanket with an overtemperature protection device of the utility model is composed of a blanket body, double-layer spiral heating wires uniformly arranged in the blanket body and a controller connected with the heating wires. The double-layer spiral heating wire is composed of heating wires H, a temperature-sensing wire S and a nylon insulating layer L arranged between the heating wires H and the temperature-sensing wire S. The controller comprises a protector tube RF, a power switch K, diodes (D1, D2, D3), a light-emitting diode LED and resistors (R1, R2, R3). When the electric blanket with an overtemperature protection device is used and the temperature of the electric blanket is higher than the index value, the insulating layer is changed into a good conductor. The partial heating wires are short-circuited by the temperature-sensing wire. The operating current of the circuit is increased. When the operating current reaches the blowout current of the protector tube RF, the protector tube RF is burnt, the circuit stop working, and the purpose of the safety is obtained. The electric blanket with an overtemperature protection device has simple structure and low cost. The electric blanket with an overtemperature protection device can reliably realize the safeguard of the excess temperature. The electric blanket with an overtemperature protection device can avoid the accident caused by misapplication, such as conflagration.
Description
Relate to the field
The utility model relates to a kind of overtemperature prote electric blanket in the household appliance technical field.
Background technology
Electric blanket is as the liking of consumers in general extremely of warming appliance on the bed, but in use if the non-normal working situation, and its temperature can surpass safe temperature and cause sudden hurt accident such as fire.Though have the safe electric heating blanket of overtemperature prote in the market; can when being in the non-normal working situation, electric blanket realize the overtemperature power-off protection by temperature sensing circuit and temperature-control circuit; but the temperature control equipment of this electric blanket is complex structure not only, and cost of manufacture is also higher.
Summary of the invention:
The purpose of this utility model is a kind of overtemperature prote electric blanket of design, and is not only simple in structure, with low cost, and can realize the overtemperature safeguard protection reliably, causes the generation such as contingencies such as fires when having avoided improper use.
The technical solution of the utility model has reached above-mentioned purpose fully.This electric blanket by the blanket body, be evenly arranged in the double-layer spiral heating line in the blanket body and be connected in the heating line controller form, the double-layer spiral heating line is made of the nylon insulating barrier L that generates heat line H, temp.-sensing wire S and be located between heating line H and the temp.-sensing wire S, and controller comprises protective tube RF, mains switch K, diode (D1, D2, D3), LED, resistance (R1, R2, R3).Feature of the present utility model is a road the linking to each other with the high-end a of K switch an of end of described heating wire H, and another road links to each other with the low side b of K switch by diode D1, and the other end of K switch links to each other with power supply.Positive pole with diode (D2, D3) after the described temp.-sensing wire S shorted on both ends links to each other, and the positive pole knot of diode D2 and diode D3 is gone up on one point, and the negative pole of diode D2 links to each other with the low side b of K switch, links to each other with the high-end a of K switch by diode D1 again.The negative pole of diode D3 links to each other with AC power by K switch.Described resistance R 2 and R3 are in parallel with diode D2 and D3 respectively, and the effect of resistance R 2 and R3 is protection diode D2 and D3 when the high-voltage breakdown experiment is done in electric blanket production.
During electric blanket work,, be the good insulation performance body because the resistivity of nylon insulating barrier when low temperature between temp.-sensing wire and the heating line is very high; But when temperature surpassed its design temperature, its resistivity just sharply reduced, and becomes good conductor again.Therefore when the temperature of any point on the electric blanket surpasses predetermined value, this is located, and insulating barrier promptly becomes good conductor by insulator on the corresponding heating wire, make the part heating wire by the temp.-sensing wire short circuit, the operating current of circuit will increase, reach the blowout current of protective tube RF when operating current, protective tube RF will burn, and circuit quits work, and reach purpose of safety.
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
Embodiment
Referring to Fig. 1, Fig. 2, the utility model is made up of blanket body 1, the controller 6 that is evenly arranged in the double-layer spiral heating line 2 in the blanket body 1 and is connected in heating line 2, double-layer spiral heating line 1 is made of the nylon insulating barrier L that generates heat line H, temp.-sensing wire S and be located between heating line H and the temp.-sensing wire S, and controller 6 comprises protective tube RF, mains switch K, diode (D1, D2, D3), LED, resistance (R1, R2, R3).A road of the end of heating wire H links to each other with the high-end a of K switch, and another road links to each other with the low side b of K switch by diode D1, and the other end of K switch links to each other with power supply; Positive pole with diode (D2, D3) after the temp.-sensing wire S shorted on both ends links to each other, and the positive pole knot of diode D2 and diode D3 is gone up on one point, and the negative pole of diode D2 links to each other with the low side b of K switch, links to each other with the high-end a of K switch by diode D1 again.The negative pole of diode D3 links to each other with the other end of K switch.Resistance R 2 and R3 are in parallel with diode D2 and D3 respectively.In this circuit, the heating major loop is made up of mains switch K, diode D1 and heating wire H.When the K switch closure at high-end a the time, alternating voltage directly is added on heating wire H two ends, heating wire H is with 100% power heat temperature raising.When K switch closure during in low side b, a half-wave of alternating voltage is blocked by diode D1, and another half-wave puts on heating wire H, and heating wire H is with 50% power heat temperature raising.Resistance R 1 series connection LED is indicated as power supply.In the course of the work, when the temperature on the electric blanket surpasses predetermined value, heating wire H goes up insulating barrier L and promptly becomes good conductor by insulator, make part heating wire H by temp.-sensing wire S short circuit, the operating current of circuit will increase, and when operating current reaches the blowout current of protective tube RF, protective tube RF will burn, circuit quits work, and reaches purpose of safety.
Claims (1)
1, a kind of overtemperature prote electric blanket; by the blanket body, be evenly arranged in the double-layer spiral heating line in the blanket body and be connected in the heating line controller form; the double-layer spiral heating line is made of the nylon insulating barrier L that generates heat line H, temp.-sensing wire S and be located between heating line H and the temp.-sensing wire S, and controller comprises protective tube RF, mains switch K, diode (D1, D2, D3), LED, resistance (R1, R2, R3).It is characterized in that a road the linking to each other with the high-end a of K switch an of end of described heating wire H, another road links to each other with the low side b of K switch by diode D1, and the other end of K switch links to each other with power supply; Positive pole with diode (D2, D3) after the described temp.-sensing wire S shorted on both ends links to each other, the positive pole knot of diode D2 and diode D3 is gone up on one point, the negative pole of diode D2 links to each other with the low side b of K switch, link to each other with the high-end a of K switch by diode D1, the negative pole of diode D3 links to each other with AC power by K switch again; Described resistance R 2 and R3 are in parallel with diode D2 and D3 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034724 CN2696256Y (en) | 2004-05-13 | 2004-05-13 | Electric blanket with overtemperature protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420034724 CN2696256Y (en) | 2004-05-13 | 2004-05-13 | Electric blanket with overtemperature protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2696256Y true CN2696256Y (en) | 2005-04-27 |
Family
ID=34773121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420034724 Expired - Fee Related CN2696256Y (en) | 2004-05-13 | 2004-05-13 | Electric blanket with overtemperature protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2696256Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
| CN108322945A (en) * | 2018-03-29 | 2018-07-24 | 刘少华 | The complete anti-authentic safe electric blanket out of control of effect |
-
2004
- 2004-05-13 CN CN 200420034724 patent/CN2696256Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
| CN108322945A (en) * | 2018-03-29 | 2018-07-24 | 刘少华 | The complete anti-authentic safe electric blanket out of control of effect |
| CN108322945B (en) * | 2018-03-29 | 2021-04-30 | 刘少华 | Full-effect out-of-control-preventing full-real safety electric blanket |
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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, No. six, south section of Ring Road, Sichuan, Chengdu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050427 Termination date: 20120513 |