CN2105716U - Fireproof temperature-regulated controller for electric mattress - Google Patents
Fireproof temperature-regulated controller for electric mattress Download PDFInfo
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- CN2105716U CN2105716U CN 91222653 CN91222653U CN2105716U CN 2105716 U CN2105716 U CN 2105716U CN 91222653 CN91222653 CN 91222653 CN 91222653 U CN91222653 U CN 91222653U CN 2105716 U CN2105716 U CN 2105716U
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Abstract
The utility model relates to a fireproof temperature-regulated controller for electric mattress, which adopts full-bridge rectification and the temperature controlling is realized through the control of a thermal resistor R-[t] by a power driving circuit composed of an operational amplifier F007, a transistor BG and a relay J. When the resistance of R-[t] is high, the voltage of the foot point 3 of the comparator F007 is higher than that of the foot point 2, and positive voltage put out from the point 6 passes over DW and makes BG to switch on and J to attract together to heat. When the resistance of R-[t] reduces, the voltage of the foot point 3 drops down, the comparator F007 rolls over, the foot point 6 puts out low voltage, and BG is no longer switched on, and J releases, and then the heating circuit is disconnected. Such recurrently variation makes the temperature.
Description
The utility model is that a kind of family, hotel, hospital's warming of being used for is with electric mattress fire prevention constant temperature adjustable controller.
But the electrical blanket of Xiao Shouing has temperature adjustment in the market, but exist the shortcoming that power consumption height, temperature height does not wait, its maximum disadvantage is a fire hazardous, the main cause of catching fire is that supply voltage 220V alternating current is directly inputted on the resistive heater, when the heating wire temperature is too high, temperature can not get absorbing or distributing, reach caused during the kindling point of coated material.Because power supply continuously for a long time, it is many that not only electricity wasting, and the temperature that electrical blanket produced often exceeds the human body normal body temperature, like this user's the rest and the physiological health of human body all had bad influence.
In order to overcome the deficiency that above-mentioned electric mattress exists, guarantee the safety of family and social property, the utility model will design that a kind of manufacturing process is simple, volume is little, lightweight electrical blanket fire prevention constant temperature adjustable controller, reach fire prevention, energy-conservation, temperature control is constant, and is safe and reliable, the purpose that the user is without fear of an attack from the rear.
For the utility model there being further understanding, be described below in conjunction with Figure of description: accompanying drawing 1 is the structural representation of electrical blanket fire prevention constant temperature adjustable controller.Battery main switch of figure middle controller (1) and power light (2) be contained in housing (3) above, pick out input attaching plug (5) in the back of it and shell base plate (4), control circuit board (6) is housed in the shell, the front portion of housing is out-put supply socket (7) and temperature control thermistor (8), and the manual control gear switch (9) and the intensification pilot lamp (10) of adjustable 36 ℃, 37 ℃, 38 ℃, 40 ℃, 45 ℃ five kinds of temperature is equipped with on housing top.
Accompanying drawing 2 is electrical schematic diagrams of the circuit board (6) in the electrical blanket fire prevention constant temperature adjustable controller structure.Entire circuit comprises rectification and temperature control two parts, battery main switch K
1After the connection, pilot lamp LED
1Indication, transformer B is converted to low alternating current 12V with supply voltage 220V, through the VD1-4 full-bridge rectification, partly uses for temperature control, in order to reduce anti-interference C again
1It is the filter capacitor in the circuit.
Operational amplifier F007, transistor BG and relay J have been formed a power driving circuit in the temperature control part, and its principle of work is a power turn-on, selects required temperature shelves, thermistor R
tIt is very big to be under the low temperature its resistance, 3 pin point voltages are than the voltage height of 2 pin points in the voltage comparator that operational amplifier F007 forms, and the 6 pin points of F007 are exported positive voltage, and its positive voltage is crossed DW and made transistor BG conducting, relay J obtains the working current adhesive, and the electrical blanket circuit begins heating after the adhesive.Along with the rising gradually of temperature, thermistor R
tResistance from large to small, this moment, the 3 pin point voltages of comparer F007 descended, when dropping to a certain degree, comparer F007 upset, its 6 pin point output LOW voltages, no longer conducting of transistor BG, relay J discharges, the heater circuit disconnection; By the time temperature drops to the 3 pin point voltages of F007, and heating begins once more during once more greater than 2 pin point voltages, goes round and begins again like this, and temperature is controlled in the value of the drafting scope.Temperature just depends on the W among the figure
1-W
5Five semifixed resistors between different resistances.
Characteristics of the present utility model are: volume is little, in light weight, than existing common electrical blanket economize on electricity 30% to more than 50%, the temperature before can selecting as required to sleep near normal human's constant temperature, helps the needs of human body rest and physiological health during with rest; This controller is safe and reliable, as long as temperature detecting resistance places on the electrical blanket, whenever can not cause fire, causes mishap; Best for the sake of security and electrical blanket factory forms a complete production network, and temperature detecting resistance can directly be made in electrical blanket, and its lead-in wire can be in the direct access controller of the circumscripted power line of electrical blanket.This engine housing single injection-molded is processed very convenient.
The concrete use operated:
Earlier thermistor is fixed in the electrical blanket heating wire with on interior any position during use, the input plug of electrical blanket inserts on the accessory power outlet of controller, opens the original switch of electrical blanket, connects with the mains then, open the power switch (1) on the controller, select temperature more as required.
Important technological parameters: power 60 300W
Power supply: 220V
Machine is heavy:＜200g
Volume 30 * 60 * 80(mm)
Claims (2)
1, a kind of electrical blanket fire prevention constant temperature adjustable controller, it is made up of the circuit board (6) that is equipped with in the power switch (1), power light (2), input attaching plug (5), out-put supply socket (7), thermistor (8), manual temperature control switch (9), intensification pilot lamp (10) and housing base plate (4) and the shell that are located on the housing (3), it is characterized in that circuit board (6) includes rectification and temperature-adjusting circuit two parts.
2, a kind of electrical blanket fire prevention constant temperature adjustable controller according to claim 1 is characterized in that the transformer B that the rectification circuit in the circuit board (6) partly adopts is converted to low alternating current 12V with supply voltage 220V, again through the VD1-4 full-bridge rectification; Temperature-adjusting circuit adopts operational amplifier F007, transistor BG and relay J to form a power driving circuit, thermistor R
tResistance is big under the low temperature, and 3 pin point voltages in the voltage comparator that F007 forms are than 2 pin point voltage height, and the 6 pin points of F007 output positive voltage is crossed DW and made BG conducting J adhesive heating, works as R
tResistance during by high step-down, 3 pin point voltage decline comparer F007 upset, 6 no longer conductings of pin point output LOW voltage transistor BG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91222653 CN2105716U (en) | 1991-12-12 | 1991-12-12 | Fireproof temperature-regulated controller for electric mattress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91222653 CN2105716U (en) | 1991-12-12 | 1991-12-12 | Fireproof temperature-regulated controller for electric mattress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2105716U true CN2105716U (en) | 1992-05-27 |
Family
ID=4929498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91222653 Granted CN2105716U (en) | 1991-12-12 | 1991-12-12 | Fireproof temperature-regulated controller for electric mattress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2105716U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425152A (en) * | 2012-05-21 | 2013-12-04 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN103823488A (en) * | 2014-03-16 | 2014-05-28 | 王志 | Temperature adjuster of heat preservation panel of dining table |
| CN104216435A (en) * | 2013-05-31 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Control circuit |
-
1991
- 1991-12-12 CN CN 91222653 patent/CN2105716U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425152A (en) * | 2012-05-21 | 2013-12-04 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN103425152B (en) * | 2012-05-21 | 2017-07-28 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN104216435A (en) * | 2013-05-31 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Control circuit |
| CN103823488A (en) * | 2014-03-16 | 2014-05-28 | 王志 | Temperature adjuster of heat preservation panel of dining table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |