CN2201857Y - Safety temp.-regulating electric-heating rug - Google Patents
Safety temp.-regulating electric-heating rug Download PDFInfo
- Publication number
- CN2201857Y CN2201857Y CN 93237385 CN93237385U CN2201857Y CN 2201857 Y CN2201857 Y CN 2201857Y CN 93237385 CN93237385 CN 93237385 CN 93237385 U CN93237385 U CN 93237385U CN 2201857 Y CN2201857 Y CN 2201857Y
- Authority
- CN
- China
- Prior art keywords
- heating wire
- heating
- alternating current
- inducer
- control apparatus
- 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)
Abstract
The utility model provides a safety temperature regulating electric heating rug. A transformation control device is connected between the alternating current and the heating wire, and contains a filter circuit composed of a capacitor and an inductor; after the alternating current is changed into smooth direct current, the heating wire supplies the electricity. The electric blanket can adjust the temperature by using multiple gears and is favorable to select the needed optimal temperature; simultaneously, the interference and the harm for the human body's biological electricity, which are caused by the alternating electromagnetic field near to the heating wire are eliminated, and use can be safe for a long time.
Description
This utility model belongs to a kind of electric blanket, is a kind of electric blanket with powered by direct current.
Present commercially available electric blanket mostly adopts civil power directly to power, thereby exists harmful alternating electromagnetic field at the heating wire surrounding space.In addition, the thermoregulation circuit of these electric blankets makes the higher harmonic components of heating wire peripheral electromagnetic field increase, thereby even more serious to the interference of human biological electricity.Particularly the most half-wave rectifying circuits of using of these electric blankets are carried out homoiothermic, and temperature control is not too high, is exactly low; Often make human body feel uncomfortable because of dehydration increases, the morbidity of perhaps suffering from cold.The above electric blanket of life-time service all can be unfavorable to health.Therefore, winter, people mostly had to only with electric blanket bedding be carried out preheating before sleep, after going to bed then the power supply electric blanket turn off.This has just limited the function of electric blanket.
The purpose of this utility model provides a kind of alternation around the heating wire or pulse electromagnetic field can avoided to the harm of human body, homoiothermic electric blanket easily.
Electric blanket of the present utility model is made up of conversion control apparatus and heating wire and blanket face.It is characterized in that: between alternating current power supply and heating wire, be connected with a conversion control apparatus that civil power is carried out adjust blood pressure, rectification, filtering.Accompanying drawing is these utility model circuit theory diagrams, now elaborates in conjunction with the accompanying drawings:
Be the circuit diagram of conversion control apparatus in the frame of broken lines.It is made up of adjust blood pressure, rectification, filter circuit three parts.Between alternating current power supply and rectification circuit, be serially connected with the regulating circuit that an inducer L1 and multidiameter option switch K form.Inducer L1 has a plurality of taps, is connected with single pole multiple throw K respectively, adjusts inductance value by the different taps that rotary switch K goes to select to contact L1, thereby reaches the purpose of adjusting output voltage and attemperation.Diode D1, D2, D3, D4 connect into full-wave bridge rectifier circuit, and its ac input end connects voltage regulator control circuit, and dc output end output ripple DC voltage is sent to filter circuit.Capacitor C1, C2 and inducer L2 have constituted filter circuit.Filter circuit is connected between rectification circuit output end and the heating wire R, and its effect is to make the pulsating dc voltage of rectification circuit output become smooth dc voltage, supplies with heating wire R heating then, produces around heating wire simultaneously and stablizes dc electromagnetic field.Heating wire R also is the heating original paper of electric blanket as the load of filter circuit.
After the energized, at first through being added in after the regulating circuit blood pressure lowering on the input of bridge rectifier, rectification circuit output end just has Rectified alternating current output to input 220V alternating current, after filter circuit, pulsating current becomes level and smooth unidirectional current at last just to heating wire R power supply, makes electric blanket heating.
For adapting to the heating needs under the different temperature conditions, rotary switch K goes to select to connect the different taps of L1, and suitable temperature can be set, and this has just overcome commercially available electric blanket temperature and has had only two grades of shortcomings that homoiothermic is too thick.Because the heating wire close with human body is with powered by direct current, what form around the heating wire is D.C. magnetic field, so the alternating electromagnetic field harm that this utility model electric blanket does not have existing product to produce can be used safely for a long time.
Claims (3)
1, the temperature adjustable electrically heated blanket of a kind of safety is made up of conversion control apparatus and heating wire and blanket face.It is characterized in that: between alternating current power supply and heating wire, be connected with a conversion control apparatus that civil power is carried out adjust blood pressure, rectification, filtering.
2, the temperature adjustable electrically heated blanket of safety according to claim 1, it is characterized in that: in conversion control apparatus, contain the filter circuit that constitutes by capacitor C1, C2 and inducer L2, filter circuit is connected between rectification circuit output end and the heating wire, its effect is to make the pulsating dc voltage of rectification circuit output become smooth dc voltage, supply with heating wire R heating then, around heating wire, produce simultaneously and stablize dc electromagnetic field.
3, the temperature adjustable electrically heated blanket of safety according to claim 1, it is characterized in that: between alternating current power supply and rectification circuit, be serially connected with the regulating circuit that an inducer L1 and multidiameter option switch K form, inducer L1 has a plurality of taps, be connected with single pole multiple throw K respectively, adjust inductance value by the different taps that rotary switch K goes to select to contact L1, thereby reach the purpose of adjusting output voltage and attemperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93237385 CN2201857Y (en) | 1993-08-06 | 1993-08-06 | Safety temp.-regulating electric-heating rug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93237385 CN2201857Y (en) | 1993-08-06 | 1993-08-06 | Safety temp.-regulating electric-heating rug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2201857Y true CN2201857Y (en) | 1995-06-28 |
Family
ID=33812348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93237385 Expired - Fee Related CN2201857Y (en) | 1993-08-06 | 1993-08-06 | Safety temp.-regulating electric-heating rug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2201857Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346625A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Multi-load wireless energy transmission device with auxiliary terminal inductance frequency selection |
| CN106413139A (en) * | 2016-08-22 | 2017-02-15 | 北京联合大学 | Alternating current electric heater equipped with rectifying filtering circuit |
-
1993
- 1993-08-06 CN CN 93237385 patent/CN2201857Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346625A (en) * | 2013-07-31 | 2013-10-09 | 哈尔滨工业大学 | Multi-load wireless energy transmission device with auxiliary terminal inductance frequency selection |
| CN103346625B (en) * | 2013-07-31 | 2015-05-20 | 哈尔滨工业大学 | Multi-load wireless energy transmission device with auxiliary terminal inductance frequency selection |
| CN106413139A (en) * | 2016-08-22 | 2017-02-15 | 北京联合大学 | Alternating current electric heater equipped with rectifying filtering circuit |
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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 |