CN201008479Y - Electrothermal blanket - Google Patents
Electrothermal blanket Download PDFInfo
- Publication number
- CN201008479Y CN201008479Y CNU2007200473918U CN200720047391U CN201008479Y CN 201008479 Y CN201008479 Y CN 201008479Y CN U2007200473918 U CNU2007200473918 U CN U2007200473918U CN 200720047391 U CN200720047391 U CN 200720047391U CN 201008479 Y CN201008479 Y CN 201008479Y
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- China
- Prior art keywords
- circuit
- temperature control
- connects
- heating wire
- output
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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.)
- Expired - Fee Related
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- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
The utility model discloses an electric blanket, which includes a thermal fuse connecting a voltage adjustment and automatic temperature control device. The voltage adjustment and automatic temperature control device consists of a voltage-reduction commutate circuit which connects with an electric network, a temperature control circuit, an electronic voltage adjustment device and a commutate diode which isolates the thermal fuse from the electric network. The output end of the temperature control circuit connects with one end of the thermal fuse through the electronic voltage adjustment device. Because the input end of the thermal fuse of the electric blanket connects with the voltage adjustment and automatic temperature control device, power switch control is carried out through a voltage-reduction commutate circuit which connects with the electric network, the temperature control circuit, the electronic voltage adjustment device and the commutate diode which isolates the thermal fuse from the electric network. The input commercial power voltage can be converted into a low safe voltage through the components. The utility model has the advantages of normal heating, use safety and reliability and the automatic temperature control device which can keep the electric blanket within a certain temperature that results in good use effect.
Description
Technical field
The utility model relates to a kind of electric blanket, particularly a kind of heating wire operating on low voltage, fully-automatic thermostatic, electric blanket safe in utilization.
Background technology
In the winter of cold, people are in bed for warming, place mat electric blanket in bed often, and during use, after electric blanket was connected with the mains, its heating wire can the work heating, thus the user has a warm sleep environment.Yet, the structure of electric blanket is to be placed in directly being connected with utility grid by cut-off switch of the interior heating wire of woollen blanket at present, its operating voltage is the line voltage of 220V or 110V, because this voltage is higher, if this woollen blanket occurs damaged and situation exposed heating wire, then the user is constituted security threat, it is unreliable to use.
In addition, existing electric blanket generally all is promptly to turn off power supply after being preheating to uniform temperature earlier, its temperature can only be comparatively warm in the sleep starting stage, often sleep after a period of time, the temperature of this woollen blanket promptly begins to descend, and can not keep the constant of temperature, or be not related to the power down source, temperature stack in the quilt is increased and is used perspiration, and all result of use is bad.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of safe in utilization, reliable, effective electric blanket.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of electric blanket, comprise the heating wire that is placed in the woollen blanket, it is characterized in that: this heating wire connects voltage adjustment and thermostat, described voltage adjustment comprises the step-down rectifying circuit that is connected electrical network with thermostat, temperature control circuit, electronic pressure controller and the commutation diode that heating wire is carried out the electrical network isolation, the output of temperature control circuit is connected to an end of heating wire by electronic pressure controller, the other end of heating wire is connected to electrical network by commutation diode, wherein, temperature control circuit comprises temperature setting adjuster, be placed in the temp probe in the woollen blanket, temperature control difference channel, voltage comparator, temperature control output circuit and on-off circuit, temp probe, the output that temperature is set adjuster connects temperature control difference channel, voltage comparator, the temperature control output circuit, on-off circuit is connected to electronic pressure controller; Electronic pressure controller comprises SCR control utmost point impulse circuit and the controllable silicon that is connected SCR control utmost point impulse circuit output, and SCR control utmost point impulse circuit connects the output of temperature control circuit, and the silicon controlled output connects heating wire.
As further preferred implementation of the present utility model, described voltage adjustment and thermostat also comprise work condition indicator, and it comprises the relay indicating light that connects the temperature control output circuit, and this relay indicating light connects thermostatical pilot lamp by phase inverter.
In addition, described step-down rectifying circuit is the resistance-capacitance depressurization rectification circuit, and purpose is to reduce the volume of power supply device.
The beneficial effects of the utility model are: because the input of this electric blanket heating silk is connected with voltage adjustment and thermostat, by connecting the step-down rectifying circuit of electrical network, temperature control circuit, electronic pressure controller and heating wire is carried out the commutation diode that electrical network isolates heating wire is carried out switch control, the line voltage of being imported is by promptly becoming the safe voltage as 36V after the above-mentioned parts, electric blanket not only can normally generate heat, and it is safe and reliable, and owing to have thermostat, electric blanket is remained within certain temperature, and result of use is good.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a structural principle block diagram of the present utility model;
Fig. 3 is physical circuit figure of the present utility model.
The specific embodiment
With reference to Fig. 1, Fig. 2, a kind of electric blanket of the present utility model, comprise the heating wire that is placed in the woollen blanket, this heating wire connects voltage adjustment and thermostat, described voltage adjustment comprises the step-down rectifying circuit that is connected electrical network with thermostat, temperature control circuit, electronic pressure controller and the commutation diode that heating wire is carried out the electrical network isolation, the output of temperature control circuit is connected to an end of heating wire by electronic pressure controller, the other end of heating wire is connected to electrical network by commutation diode, wherein, temperature control circuit comprises temperature setting adjuster, be placed in the temp probe in the woollen blanket, temperature control difference channel, voltage comparator, temperature control output circuit and on-off circuit, temp probe, the output that temperature is set adjuster connects temperature control difference channel, voltage comparator, the temperature control output circuit, on-off circuit is connected to electronic pressure controller; Electronic pressure controller comprises SCR control utmost point impulse circuit and the controllable silicon that is connected SCR control utmost point impulse circuit output, and SCR control utmost point impulse circuit connects the output of temperature control circuit, and the silicon controlled output connects heating wire.
Wherein, as further preferred implementation of the present utility model, described voltage adjustment and thermostat also comprise work condition indicator, it comprises the relay indicating light that connects the temperature control output circuit, this relay indicating light connects thermostatical pilot lamp by phase inverter, to show the duty of electric blanket.
In addition, described step-down rectifying circuit is preferably the resistance-capacitance depressurization rectification circuit, and purpose is to reduce the volume of power supply device.
Concrete enforcement circuit of the present utility model as shown in Figure 3, wherein, the resistance-capacitance depressurization rectification circuit comprises diode D4, D5, voltage-stabiliser tube D6, D7, capacitor C 2, resistance R 15, R16, R17; Temp probe is R7; Temperature control difference channel comprises triode T4, T5; Steady control output circuit comprises triode T3; On-off circuit comprises that light is every IC; The SCR control utmost point impulse circuit of electronic pressure controller comprises resistance R 1～R4, switch transistor T 2 diode D1 and capacitor C 1; It is adjustable resistance R10 that temperature is set adjuster; Controllable silicon is one-way SCR T1, and the pin of this one-way SCR T1 is connected to the input of heating wire by protective tube RU, and the other end of heating wire is connected to electrical network by commutation diode D10.
Work condition indicator comprises relay indicating light D3 and the resistance R 19 that connects the temperature control output circuit, connects thermostatical pilot lamp D2 by phase inverter T7.
Wherein, the bridge rectifier in the described resistance-capacitance depressurization rectification circuit includes voltage-stabiliser tube D6, D7, and result of use is better.
Because the input of this electric blanket heating silk is connected with voltage adjustment and thermostat, by step-down rectifying circuit, temperature control circuit, electronic pressure controller that connects electrical network and the commutation diode that heating wire is carried out the electrical network isolation heating wire is carried out switch control, the line voltage of being imported is by promptly becoming the safe voltage as 36V after the above-mentioned parts, electric blanket not only can normally generate heat, and it is safe and reliable, and owing to have thermostat, electric blanket is remained within certain temperature, and result of use is good.
Certainly, the utility model is except the foregoing description, and other equivalent technical solutions also should be within the protection domain of the invention.
Claims (4)
1. electric blanket, comprise the heating wire that is placed in the woollen blanket, it is characterized in that: this heating wire connects voltage adjustment and thermostat, described voltage adjustment comprises the step-down rectifying circuit that is connected electrical network with thermostat, temperature control circuit, electronic pressure controller and the commutation diode that heating wire is carried out the electrical network isolation, the output of temperature control circuit is connected to an end of heating wire by electronic pressure controller, the other end of heating wire is connected to electrical network by commutation diode, wherein, temperature control circuit comprises temperature setting adjuster, be placed in the temp probe in the woollen blanket, temperature control difference channel, voltage comparator, temperature control output circuit and on-off circuit, temp probe, the output that temperature is set adjuster connects temperature control difference channel, voltage comparator, the temperature control output circuit, on-off circuit is connected to electronic pressure controller; Electronic pressure controller comprises SCR control utmost point impulse circuit and the controllable silicon that is connected SCR control utmost point impulse circuit output, and SCR control utmost point impulse circuit connects the output of temperature control circuit, and the silicon controlled output connects heating wire.
2. a kind of electric blanket according to claim 1, it is characterized in that: described voltage adjustment and thermostat also comprise work condition indicator, it comprises the relay indicating light that connects the temperature control output circuit, and this relay indicating light connects thermostatical pilot lamp by phase inverter.
3. a kind of electric blanket according to claim 1 is characterized in that: described step-down rectifying circuit is the resistance-capacitance depressurization rectification circuit.
4. a kind of electric blanket according to claim 3 is characterized in that: the bridge rectifier in the described resistance-capacitance depressurization rectification circuit includes voltage-stabiliser tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200473918U CN201008479Y (en) | 2007-01-08 | 2007-01-08 | Electrothermal blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200473918U CN201008479Y (en) | 2007-01-08 | 2007-01-08 | Electrothermal blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201008479Y true CN201008479Y (en) | 2008-01-23 |
Family
ID=39043411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200473918U Expired - Fee Related CN201008479Y (en) | 2007-01-08 | 2007-01-08 | Electrothermal blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201008479Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622009A (en) * | 2012-03-30 | 2012-08-01 | 苏州苏海亚电气有限公司 | Temperature controller |
| CN102871454A (en) * | 2012-10-08 | 2013-01-16 | 李文忠 | Heat-accumulation electromagnetic-heating warm mattress |
-
2007
- 2007-01-08 CN CNU2007200473918U patent/CN201008479Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622009A (en) * | 2012-03-30 | 2012-08-01 | 苏州苏海亚电气有限公司 | Temperature controller |
| CN102871454A (en) * | 2012-10-08 | 2013-01-16 | 李文忠 | Heat-accumulation electromagnetic-heating warm mattress |
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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: 20080123 |