CN88200753U - Safety electricity-saving thermostatic controller for electric heating blanket - Google Patents
Safety electricity-saving thermostatic controller for electric heating blanket Download PDFInfo
- Publication number
- CN88200753U CN88200753U CN 88200753 CN88200753U CN88200753U CN 88200753 U CN88200753 U CN 88200753U CN 88200753 CN88200753 CN 88200753 CN 88200753 U CN88200753 U CN 88200753U CN 88200753 U CN88200753 U CN 88200753U
- Authority
- CN
- China
- Prior art keywords
- temperature
- electric heating
- heating blanket
- circuit
- trigger circuit
- 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.)
- Withdrawn
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Abstract
The utility model discloses a safety electricity-saving thermostatic controller for the electric heating blanket, comprising a controllable silicon with small power, a temperature comparison triggering circuit, etc. The electric heating blanket sold at present has no the device. Consequently after a user falls asleep, a temperature is quite low, and the sense is not enough for the warmth. The exorbitant temperature makes the body uncomfortable. The electrical energy is wasted, and the electrical energy is not enough completely. After the device is adopted, when the temperature of the electric heating blanket is below the temperature required, the controllable silicon is triggered and conducted. The electric heating blanket is heated. When the temperature of the electric heating blanket is lifted to the temperature required, the controllable silicon is not conducted. The temperature of the electric heating blanket is not lifted any longer. The user can select the constant temperature required according to the scale indication of the potentiometer. The utility model has the advantages of low cost and high reliability. J[-130].
Description
The utility model relates to the contactless thermostatically-controlled equipment of a kind of electronics, particularly a kind of thermostatically-controlled equipment that can play the safety electricity-saving effect to electric blanket (cotton-padded mattress).
Existing electronic thermostatic control device circuit complexity, the cost height.The electric blanket of selling on the market (cotton-padded mattress) is generally to adopt the method for manual temperature adjustment to carry out temperature controlled now.Because the inertia on the conduction life period of temperature, and the temperature of heater self is subjected to the influence of ambient temperature, so the user must often carry out manual adjustments, just can obtain the best and experience temperature.Obviously after the user is sleeping, can not accomplish, because adjustment is crossed low or powered-down after warm inadequately, regulates too highly then human body skin is produced pessimal stimulation, uncomfortable answering, also consume electric power in vain, also can produce high temperature when careless and inadvertent, cause accident.
The purpose of this utility model provides electric blanket (cotton-padded mattress) thermostatically-controlled equipment of a kind of simple, cheap, safety, economize on electricity, and it can overcome existing some above-mentioned drawbacks of electric blanket.
This device mainly compares trigger circuit by thyristor supply on-off circuit, temperature and triggers power circuit and form.
Accompanying drawing is a circuit diagram of the present utility model.
The thyristor supply on-off circuit is by diode D in the accompanying drawing
1～D
4And single-phase silicon-controlled SCR forms; Temperature compares trigger circuit by triode BG
1, BG
2, diode D
5, resistance R
2, R
3, R
7, thermistor R
5, adjustable resistance R
6And capacitor C
1Form; Trigger power circuit by resistance R
1, LED and stabilivolt DW form.
Now in conjunction with the accompanying drawings circuit theory is described.
220 volts of AC power are through diode D
1～D
4Become direct supply after the rectification, so both can adopt a single-phase silicon-controlled SCR that switch control is carried out in load (heating wire), also provide direct supply simultaneously for temperature comparison trigger circuit.
Compare in the trigger circuit, in temperature by a PNP triode BG
1And another NPN triode BG
2Mutual compound back constitutes trigger, by resistance R
2, R
3, R
6R
7And thermistor R
5Constitute the temperature-sensitive electric bridge.R
5Be placed in the miniature metal shell and heating wire together is arranged in the corresponding site of electric blanket inboard.2 of the A of temperature-sensitive electric bridge, B respectively with BG
1Emitter be connected with base stage.When the temperature of electric blanket is lower than when temperature required, because R
5Resistance big, B point current potential is low, diode BG
1Base current Ib is arranged
1Flow through, simultaneously BG
1Collector and BG
2Base stage has β
1Ib
1Electric current flows through, simultaneously BG
2Collector has β
1β
2Ib
1Electric current flows through, thereby makes BG
1Base current Ib
1Further increase ...So move in circles, strong chain reaction makes BG
1, BG
2Rapid saturation conduction, capacitor C
1Pass through BG
1, BG
2And R
4Discharge, thereby at R
4Pulse signal appears in two ends, makes the single-phase silicon-controlled SCR conducting that is triggered, and electric blanket is heated.When the temperature of electric blanket rises to when temperature required, because R
5Resistance reduce, B point current potential raises, triode BG
1No base current, BG
1, BG
2Be in cut-off state, R
4Two ends no pulse signal output, not conducting of SCR, electric blanket temperature no longer raises.Regulate adjustable resistance R
6Resistance can change B point current potential, electric blanket temperature is constant in required numerical value, therefore at R
6Scale and knob on carry out scale indication after, just can indicate and go to select required steady temperature according to scale.
The required working power of temperature comparison trigger circuit is through R
1Supply with after step-down, the DW voltage stabilizing, LED can play the effect of power light.
Accompanying drawing can be as embodiment of the present utility model.
D in the accompanying drawing
1～D
4Adopt 1N4006, D
5Adopt 2CP12, BG
1Adopt CS9012, BG
2Adopt 3DG201B, SCR to adopt CR3AM, LED to adopt 2EFG3, DW to adopt 2CW3, R
6Adopt the small-sized solid potentiometer of 2.7K Ω, R
5Adopt MF-53 type 5.6K Ω thermistor, other capacitance-resistance value is as follows:
R
1－1W／82KΩ R
4－0.125W／470Ω
R
2－0.125W／6.2KΩ R
7－0.125W／16KΩ
R
3－0.125W／27KΩ C
1－0.047μF
The utility model cost is low, and circuit is simple and reliable, and suitable to electric blanket (cotton-padded mattress), electric incubator etc. carry out thermostatic control.
Claims (5)
1, a kind of electric blanket thermostatically-controlled equipment is made up of thyristor supply on-off circuit, temperature comparison trigger circuit and triggering power circuit, it is characterized in that:
In a, the thyristor supply on-off circuit, rectifier D
1～D
4Positive output end be connected with an end of heating wire, negative output terminal is connected with the negative electrode of controllable silicon SCR, the anode of SCR is connected with the other end of heating wire, the conducting of SCR and turn-off and can carry out temperature control to electric blanket,
B, temperature compare in the trigger circuit, by resistance R
2, R
3, R
5, R
6, R
7Constitute the temperature-sensitive electric bridge, 2 of the A of electric bridge, B respectively with BG
1Emitter be connected with base stage,
In c, the triggering power circuit, at R
1With the LED of connecting between the DW, R
1Resistance between 15k Ω～150k Ω.
2, temperature as claimed in claim 1 compares trigger circuit, it is characterized in that thermistor R, with adjustable resistance R
6The series connection back constitutes a brachium pontis of temperature-sensitive electric bridge mutually, and an end of this brachium pontis is connected with the anode of stabilized voltage supply, the other end and BG
1Base stage be connected.
3, temperature as claimed in claim 1 compares trigger circuit, it is characterized in that thermistor R
5Be to be placed in the miniature protecting sheathing, the middle part inside line ， And that is arranged in electric blanket is fixed in the middle of the mutual gap of heating wire.
4, temperature as claimed in claim 1 compares trigger circuit, it is characterized in that the brachium pontis R at the temperature-sensitive electric bridge
3Two ends capacitor C in parallel
1, its numerical value is between 0.01 μ F～0.56 μ F.
5, temperature as claimed in claim 1 compares trigger circuit, it is characterized in that R
6Index dial be marked with constant scope and Temperature numerical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200753 CN88200753U (en) | 1988-01-15 | 1988-01-15 | Safety electricity-saving thermostatic controller for electric heating blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200753 CN88200753U (en) | 1988-01-15 | 1988-01-15 | Safety electricity-saving thermostatic controller for electric heating blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88200753U true CN88200753U (en) | 1988-09-21 |
Family
ID=4836112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200753 Withdrawn CN88200753U (en) | 1988-01-15 | 1988-01-15 | Safety electricity-saving thermostatic controller for electric heating blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88200753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103853213A (en) * | 2012-11-30 | 2014-06-11 | 海洋王照明科技股份有限公司 | Constant-temperature circuit |
-
1988
- 1988-01-15 CN CN 88200753 patent/CN88200753U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103853213A (en) * | 2012-11-30 | 2014-06-11 | 海洋王照明科技股份有限公司 | Constant-temperature circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C61 | Other related matters missed announcement to grant the patent right of following patent application on september 13, 1989 | ||
| OR01 | Other related matters | ||
| 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 |