CN203414839U - Low voltage temperature control alarm electric heating blanket - Google Patents
Low voltage temperature control alarm electric heating blanket Download PDFInfo
- Publication number
- CN203414839U CN203414839U CN201320501326.3U CN201320501326U CN203414839U CN 203414839 U CN203414839 U CN 203414839U CN 201320501326 U CN201320501326 U CN 201320501326U CN 203414839 U CN203414839 U CN 203414839U
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- temperature control
- circuit
- transformer
- alternating current
- control circuit
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Abstract
The utility model relates to a low voltage temperature control electric heating blanket comprising an overload protection circuit, a sound-light alarm circuit, a temperature control circuit, a 36V transformer and a blanket body. The working principle of the low voltage temperature control electric heating blanket is that: after the low voltage temperature control electric heating blanket is powered on, a 220V alternating current flows in from one end of the overload protection circuit and flows out of the other end of the overload protection circuit. Then the 220V alternating current flows into the temperature control circuit and flows out of the other end of the temperature control circuit to enter into an alternating current transformer. The 220V alternating current is converted into a 36V alternating current via the alternating current transformer. The 36V alternating current flows into heating elements inside the blanket body to generate heat. The overload protection circuit is connected with the sound-light alarm circuit. After power is on, a quick-starting button can be started so that the whole circuit is in working state and the electric heating blanket starts to heat. The low voltage temperature control alarm electric heating blanket is the electric heating blanket which is simple in structure, low in manufacture cost, safe and practical, capable of adjusting temperature at will, energy-saving, convenient to operate, quick in temperature rising, cheap in price and great in quality.
Description
Technical field
The utility model belongs to electronic technology field, is specifically related to a kind of low-voltage temperature control alarming electric blanket.
Background technology
At present, commercially available electric blanket major part is directly to use the commercially available power voltage supply of 220V, utmost point fire hazardous; Some use resistance, electric capacity, inductance reach the object that is used for reaching adjusting temperature of step-down current limliting, waste energy; The use thermal sensing element also having can design temperature, but programming rate is slow, complex structure, and cost is high, is easy to damage.Need to invent a kind of electrothermal calefactive rate fast, energy-conserving and environment-protective, can also regulate temperature according to individual demand, safe and convenient to use, cheap and good-quality electric blanket.
Summary of the invention
The utility model is that the technical scheme that technical solution problem is taked is:
A temperature control electric blanket, comprises overload protecting circuit, sound light alarming circuit, temperature control circuit, 36V transformer, blanket body.It is characterized in that: described overload protecting circuit one end is connected with 220V AC power, and the other end is connected with temperature control circuit, and temperature control circuit is connected with AC transformer, the other end of AC transformer is connected with the blanket body of electric blanket.After this actual load is put and is switched on power; 220V alternating current flows into from one end of overload protecting circuit; from the other end, flow out; flow into again temperature control circuit, then flow out from the other end of temperature control circuit, enter AC transformer; by AC transformer, change 36V alternating current into; 36V alternating current enters the heater in blanket body again, produces heat, and overload protecting circuit is connected with sound light alarming circuit.After switching on power, can start and open soon button, now whole circuit is in running order, and electric blanket starts heating.We can according to individual demand arbitrarily set energising and power off time, come regulation heating body quantity of heat production number, the height of electric blanket temperature.When temperature control circuit, AC transformer, any part of heater break down or during short circuit, momentary current increases, overload protective device will be cut off the electricity supply, and sends sound and light alarm, avoids the generation of accident.The utility model electric blanket adopts 36V power voltage supply, has eliminated the hidden danger due to circuit breaking out of fire, and while breaking down in circuit, electric current increases, and overload protective device will be cut off the electricity supply, and sends sound and light alarm, so use safer.With temperature control circuit can according to the variation of personal like, room temperature set at any time energising with power off time come regulation heating body quantity of heat production number, the height of electric blanket temperature.
Positive beneficial effect of the present utility model is: simple in structure, cost of manufacture is low, safe and practical, can arbitrarily regulate temperature, energy-conservation, easy to operate, heat up rapidly, and cheap and good-quality electric blanket.
Below in conjunction with accompanying drawing, the utility model is elaborated:
Accompanying drawing explanation:
Fig. 1 is low-voltage temperature control alarming electric blanket block scheme;
Fig. 2 is low-voltage temperature control alarming electric blanket circuit theory diagrams.
Embodiment:
Referring to Fig. 1 and Fig. 2, a kind of low-voltage temperature control electric blanket, comprises overload protecting circuit 1, temperature control circuit 2,36V AC transformer 3, blanket body 4, sound light alarming circuit 5.It is characterized in that: described overload protecting circuit 1 one end is connected with 220V AC power, and the other end is connected with temperature control circuit 2, and temperature control circuit 2 is connected with AC transformer 3, the other end of AC transformer 3 is connected with the blanket body 4 of electric blanket.After the utility model switches on power, 220V alternating current flows into from one end of overload protecting circuit 1; from the other end, flow into and enter temperature control circuit 2; from the other end of temperature control circuit 2, flow out again; enter AC transformer 3; by AC transformer 3, change 36V alternating current into; 36V alternating current enters the heater 6 in blanket body 4 again, produces heat.Described heater 5 by the insulating property of diameter 0.25mm-0.40mm reach standard copper wire tortuous inweave or sew up in blanket body form, the heater that the tortuous success ratio of selected diameter 0.30mm length 67m copper conductor is 80w.
Described overload protecting circuit 1 is comprised of rectifier bridge, adjustable potentiometer, transformer, bilateral diode, controllable silicon, relay.WR1 and WR2 are accurate adjustable potentiometer; resistance is obtained comparative voltage from Q101, Q102 output terminal respectively as a comparison; wherein WR1 plays action range regulation potentiometer as current foldback circuit; WR2 is as reference potential device; as heating transformer T3; while becoming large because of overload current, it is large that the electric current on T1, T2 also becomes simultaneously, and therefore the voltage of rectifier bridge Q101, Q102 output raise.WR1, WR2 centre tap obtain comparative voltage and raise, and comparative voltage applies forward voltage by bilateral diode D3 to SCR control end, makes controlled silicon conducting; cause relay J 101 actions; its normally closed contact K101-1 disconnects, and cuts off heater circuit, protects whole circuit to exempt from overcurrent and damages.
Described temperature control circuit 2 has adopted a time-base integrated circuit NE555 to make cycle timing controller.When power connection, due to IC1 2., 6. pin is low level, IC1 triggers set, its 3. pin become high level, now relay J 201 excitation adhesives, its normally closed battle of K201-2 disconnects, R203 is inoperative.Meanwhile, often touch contact K201-1 closed, heater must be established the heating of beginning by cable.Now because the 3. pin of IC1 is in high level state, diode VD6 conducting, electric current charges to C202 through resistance R 201, WR201, As time goes on, when the voltage at C202 two ends rises to 2/3 supply voltage, IC1 automatically resets, its 3. pin become low level, corresponding relay J 201 also discharges without electricity, and heater stops heating, in keeping warm mode.Stop after heating, because the 3. pin of IC1 is low level, now K201-2 has connected R203, and K201-1 disconnects, and due to the access of R203, the threshold voltage that makes IC1 is not 1/3 supply voltage, but IC1 5. pin voltage 1/2.Now C202 is through WR202, R202 and IC1 internal discharge tube discharge, when being put into voltage on C202 always and being down to 1V left and right, and the IC1 set of overturning again, the 3. pin of IC1 transfers again high level to.So because the access of R203 can make less WR202, R202 resistance obtain longer time delay, also can to reduce poor with the duration of charging of each time later for the first time simultaneously.According to the value of this schematic diagram, suitably regulate WR201, WR202, can make the heating of heater and stand-by time be controlled at separately variation about 1-15 minute.
Described sound light alarming circuit is comprised of transistor Vl-V4, capacitor C501, resistor R501, R502, light emitting diode VL and hummer HA.During circuit nonoverload, the normally opened contact K101-2 of relay J 101 disconnects, while normally closed some K101-1 closure, and Vl is in cut-off state, and sound light alarming circuit is not worked, and VL is not luminous, and HA is sounding not.During current overload, cause relay J 101 actions,, normally closed some K101-1 disconnects and cuts off heater circuit simultaneously, and its normally opened contact K101-2 is closed, makes Vl-V4 conducting, and VL lights, and HA sends chimes of doom.Adjust the resistance of R501, can change the sensitivity of alarm action.
Described heater 5 by the insulating property of diameter 0.25mm-0.40mm reach standard copper wire tortuous inweave or sew up in blanket body form, the heater that the tortuous success ratio of selected diameter 0.3mm length 67m copper conductor is 80w.
After switching on power, can start and open soon button, now whole circuit is in running order, and electric blanket starts heating.We can arbitrarily set the start and stop time according to individual demand, carry out the number of regulation heating body quantity of heat production, the height of electric blanket temperature.When temperature control circuit, AC transformer, any part of heater break down or during short circuit, momentary current increases, overload protective device will be cut off the electricity supply, and sound light alarming circuit sends alerting signal, avoids the generation of accident.The utility model electric blanket adopts 36V power voltage supply, has eliminated the hidden danger due to circuit breaking out of fire, and while breaking down in circuit, electric current increases, and overload protective device will be cut off the electricity supply, so use safer.With temperature control circuit, can set at any time according to the variation of personal like, room temperature the number of start and stop time regulation heating body quantity of heat production, the height of electric blanket temperature.
Positive beneficial effect of the present utility model is: simple in structure, cost of manufacture is low, safe and practical, energy-conservation, easy to operately can arbitrarily regulate temperature, heat up rapidly, and cheap and good-quality electric blanket.
Claims (2)
1. a low-voltage temperature control alarming electric blanket, comprises overload protecting circuit, sound light alarming circuit, temperature control circuit, 36V transformer, blanket body; It is characterized in that: described overload protecting circuit one end is connected with 220V AC power, and the other end is connected with temperature control circuit, and temperature control circuit is connected with AC transformer, the other end of AC transformer is connected with the blanket body of electric blanket; After this actual load is put and is switched on power; 220V alternating current flows into from one end of overload protecting circuit; from the other end, flow out; flow into again temperature control circuit, then flow out from the other end of temperature control circuit, enter AC transformer; by AC transformer, change 36V alternating current into; 36V alternating current enters the heater in blanket body again, produces heat, and overload protecting circuit is connected with sound light alarming circuit.
2. according to claim 1, a kind of low-voltage temperature control alarming electric blanket, comprises overload protecting circuit 1, temperature control circuit 2,36V AC transformer 3, blanket body 4, sound light alarming circuit 5; It is characterized in that: described overload protecting circuit 1 one end is connected with 220V AC power, and the other end is connected with temperature control circuit 2, and temperature control circuit 2 is connected with AC transformer 3, the other end of AC transformer 3 is connected with the blanket body 4 of electric blanket; After the utility model switches on power, 220V alternating current flows into from one end of overload protecting circuit 1, from the other end, flow into and enter temperature control circuit 2, from the other end of temperature control circuit 2, flow out again, enter AC transformer 3, by AC transformer 3, change 36V alternating current into, 36V alternating current enters the heater 6 in blanket body 4 again, produces heat; Described heater 5 by the insulating property of diameter 0.25mm-0.40mm reach standard copper wire tortuous inweave or sew up in blanket body form, the heater that the tortuous success ratio of selected diameter 0.30mm length 67m copper conductor is 80w.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501326.3U CN203414839U (en) | 2013-08-16 | 2013-08-16 | Low voltage temperature control alarm electric heating blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501326.3U CN203414839U (en) | 2013-08-16 | 2013-08-16 | Low voltage temperature control alarm electric heating blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414839U true CN203414839U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320501326.3U Expired - Fee Related CN203414839U (en) | 2013-08-16 | 2013-08-16 | Low voltage temperature control alarm electric heating blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102023A (en) * | 2019-05-09 | 2019-08-09 | 中国康复研究中心 | A kind of ankle-joint warm training aids |
-
2013
- 2013-08-16 CN CN201320501326.3U patent/CN203414839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102023A (en) * | 2019-05-09 | 2019-08-09 | 中国康复研究中心 | A kind of ankle-joint warm training aids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20150816 |
|
| EXPY | Termination of patent right or utility model |