CN2199651Y - Optically cotrolled electric heating blanket - Google Patents
Optically cotrolled electric heating blanket Download PDFInfo
- Publication number
- CN2199651Y CN2199651Y CN 94220643 CN94220643U CN2199651Y CN 2199651 Y CN2199651 Y CN 2199651Y CN 94220643 CN94220643 CN 94220643 CN 94220643 U CN94220643 U CN 94220643U CN 2199651 Y CN2199651 Y CN 2199651Y
- Authority
- CN
- China
- Prior art keywords
- relay
- optically
- cotrolled
- electric heating
- heating blanket
- 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
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- Control Of Resistance Heating (AREA)
- Central Heating Systems (AREA)
Abstract
The utility model belongs to an optically controlled electric heating blanket, comprising a heating section and a control section. The output end of the secondary coil of a transformer is connected with the input end of a bridge rectifier circuit d 1-d 4; the output end is connected with a working circuit composed of a relay, a photoresistor, a transistor, and a capacitance; the action of the relay is controlled by utilizing the change of the resistance value of the photoresistor; the normally-closed contact on the heating element is switched off or switched on to achieve the purposes of safety and automatic control.
Description
The utility model belongs to a kind of electrically heated sleeping rug.
At present, the electric blanket of market sale and use is generally electrical heating wire is connected with the control switch that has, and is connected to power supply by plug, mainly relies on temperature regulating switch outage or conducting electric blanket.So after causing easily using, can not get in time closing or dial plug down, make electric blanket in running order all the time, cause electric blanket temperature to gather and increase, or, bring loss for family and country because of the heating wire short circuit causes fire.
The purpose of this utility model aims to provide a kind of Optically cotrolled electric heating blanket, and by utilizing the power of light, the conducting of automatic control switch or disconnection reach safe application target.
For achieving the above object, the utility model is achieved through the following technical solutions: the input that is connected to bridge rectifier D1-D2 by the secondary coil output of transformer B, its output is connected to the operating circuit of being made up of relay J, photo resistance R, transistor BG, capacitor C, utilize the variation of photo resistance R resistance, the adhesive of control relay J, release disconnect or conducting the normally-closed contact JK on the heating element.
The utility model has following advantage compared to existing technology:
1, adopt light-sensitive element, make its power of utilizing light, the size of current that is produced drives relay, and the contact on the heating element is disconnected or turn-on power, thereby reaches the application target of automatic control.
2, avoid all unnecessary things to take place because of adopting light-operated form, can controlling, after using, green onion is busy to be left or indoor unmanned, and forget and cut off the electricity supply, or because of the heating element short circuit, can cut off operating circuit automatically by light controlling device, can not cause electric blanket to cause fire by poly-the increasing of Yin Wendu.
3, utilize natural daylight control, save electric blanket and use front and back every day, need the trouble of frequent startup mains switch.
Description of drawings:
Fig. 1 is the circuit diagram of Optically cotrolled electric heating blanket.
Be further described below in conjunction with accompanying drawing embodiment of the present utility model:
See that Fig. 1 shows the electric elements and the component parameters of Optically cotrolled electric heating blanket.Be connected to input by the secondary coil output of transformer B, be connected in the operating circuit of forming by filter capacitor C, amplifier transistor BG, photo resistance R, resistance R 1, relay J by the output after the D1-D4 rectification by the D1-D4 bridge rectifier.Driving relay J work by photo resistance R, resistance R 1 by transistor BG amplified current, in order to the relay normally-closed contact JK on the control heating element.When photo resistance R received illumination, the resistance of photo resistance R reduced, and electric current increases, and amplified by transistor BG electric current, drove relay J action adhesive, and the normally-closed contact JK of the relay J on the heating element is disconnected, and promptly cut off the electricity supply; When a little less than the illumination, photo resistance R resistance increases, and electric current reduces, and relay J is discharged, and normally-closed contact JK conducting makes electric blanket work.
Optically cotrolled electric heating blanket mainly utilizes photoresistance cell, produces the size of electric current, drives the disconnection or the conducting of the normally-closed contact control power supply of relay, thereby reaches the purpose of automatic control.
Claims (1)
1, Optically cotrolled electric heating blanket, comprise heating part and control section composition, it is characterized in that secondary coil output by transformer B, be connected to the input of bridge rectifier D1-D4, its output connects the operating circuit of being made up of relay J, photo resistance R, transistor BG, capacitor C, the adhesive of control relay J discharges, and the normally-closed contact JK on the heating element is disconnected or conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220643 CN2199651Y (en) | 1994-09-04 | 1994-09-04 | Optically cotrolled electric heating blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220643 CN2199651Y (en) | 1994-09-04 | 1994-09-04 | Optically cotrolled electric heating blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199651Y true CN2199651Y (en) | 1995-05-31 |
Family
ID=33835180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94220643 Expired - Fee Related CN2199651Y (en) | 1994-09-04 | 1994-09-04 | Optically cotrolled electric heating blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199651Y (en) |
-
1994
- 1994-09-04 CN CN 94220643 patent/CN2199651Y/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 | ||
| 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 |