CN2473780Y

CN2473780Y - Temperature control power plug-in board

Info

Publication number: CN2473780Y
Application number: CN 00244847
Authority: CN
Inventors: 苏志才
Original assignee: ZHONGSHAN MIDDLE SCHOOL GUILIN
Current assignee: ZHONGSHAN MIDDLE SCHOOL GUILIN
Priority date: 2000-10-29
Filing date: 2000-10-29
Publication date: 2002-01-23
Anticipated expiration: 2010-10-29

Abstract

The utility model provides a temperature control power inserting plate, which is mainly composed of a power socket, a regulated power supply, a voltage comparator, an electronic switch and a driving controller. The utility model is characterized in that the environment temperature change which is reflected by a temperature sensing resistor is changed into voltage change and then compared with the reference voltage; the comparative result is in charge of the powerdown of an electric fan. The temperature control power inserting plate has simple structure and sensitive and reliable control, which can be used as an ordinary power socket and also has temperature control powerdown function. When the environment temperature is below the set point, the temperature control power inserting plate can automatically cut off the power, so the utility model is especially suitable for matching with an electric fan during the sleeping time in summer night.

Description

The temperature control electric socket

The utility model relates to supply socket, specifically a kind of temperature control electric socket.

Common electric fan is provided with the timing shutdown function mostly, though timer is arranged, but ambient temperature is along with the variation of macroclimate changes, especially at night, used timer still to feel inconvenience, this be because: if timing is long before sleeping, and the environment temperature has been reduced to when not needing electric fan, the people falls asleep again, and electric fan is not shut down yet, and is easy to catch cold; If timing is too short, and the ring temperature is still higher, gets up to reopen electric fan again, has both bothered also influence to have a rest.

The purpose of this utility model just provides a kind of temperature control electric socket, and it not only can be made the common power socket and use, and also has the temperature of setting power down function, and when ambient temperature was lower than set point, the energy automatically cutting off power source quit work electric fan.And after ring temperature gos up, still can keep off-position, in order to avoid cause temperature rise on daytime descendant not the time electric fan phenomenon that but works without cessation.

In order to achieve the above object, the technical scheme that the utility model is taked is: this temperature control electric socket comprises supply socket X1, it is characterized in that it also comprises: rectifying and wave-filtering, stabilized voltage power supply, respectively to circuit supply; A voltage comparator N1, its inverting input is connected with the divider resistance R3 of reference voltage, the mid point of R4, divider resistance is attempted by the two ends of source of stable pressure output, the in-phase input end of N1 is connected with the mid point of the bleeder circuit that temperature adjustment resistance R V, thermo-sensitive resistor RT constitute, and RV, RT are connected to the two ends of source of stable pressure output; The output OUT of N1 is connected with the control end G of an electronic switch, the A of electronic switch, K two ends and a drive coil K1 are in series, and being connected in the output two ends of rectifier U1, controlled normally-closed contact K1-1 and the described supply socket X1 of K1 are in series, and are connected the two ends of city's power supply.

The utility model has the advantages that: simple in structure, control sensitivity reliably, both can have been made the common power socket and use, and also had the temperature of setting power down function, and when ambient temperature was lower than set point, the energy automatically cutting off power source quit work electric fan, brings convenience to life.

Fig. 1 is the circuit diagram of this temperature control electric socket.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Circuit mainly is made up of supply socket, rectification, filtering, pressurizer, voltage comparator, electronic switch, driving relay.In Fig. 1, X1 is supply socket (available diplopore or a porous), and can power fan or other household electrical appliances use, and K1-1 is by the normally-closed contact of relay drive coil K1 control, connects with X1, is connected on the two ends of city power supply AC220V.S1 is the working power switch of temperature control circuit, and T is a transformer, and the 220V step-down is become 12V for rectification usefulness, and U1 is a bridge full wave rectifier, available integrated bridge heap, and also available semiconductor diode, for example: 1N4004 etc. * 4 bridging is formed.C1, C2 are the big capacity electrolytic capacitors that polarity is arranged, and do filtering and use; With smooth output voltage, IC1 is three end integrated voltage regulator sources, the 1st, and input, the 2nd, earth terminal, the 3rd, output.R1 is a current-limiting resistance, and LED is a light-emitting diode, makes indicator light and uses.N1 is an amplifier integrated package (available single amplifier, also available very common on the market double operational, as: MC4558, HA17458, TL082 etc.), making voltage comparator uses, R2, RV are divider resistances under last divider resistance, RT are, mid point is connected on the in-phase input end of N1, RV is adjustable, be contained on the panel, and demarcated the corresponding scale of temperature and change in voltage point, but change its working point set environment temperature controlling point, RT is the thermo-sensitive resistor with negative temperature coefficient feature, promptly encircle the temperature rise resistance decreasing, the ring temperature descends, and it is big that resistance becomes; R3, R4 are the divider resistances of reference voltage, and mid point is connected on the inverting input of N1, provides the comparative voltage benchmark to comparator.R5 is a feedback resistance, plays stable output.R6 isolates current-limiting resistance, and VD6 is a voltage stabilizing didoe.VS is a reverse blocking triode thyrisstor, be commonly called as one-way SCR, make electronic switch usefulness, its controlled end G is connected with the output OUT of N1 by VD6, R6, anode A, negative electrode K are in series with the solenoid K1 that drives relay, between the output that is attempted by U1 is held together.VD5 is the protection diode.

The course of work of circuit is: mixes up RV earlier, sets and start to control temperature spot, and power turn-on switch S 1, U1, IC1 promptly power respectively to circuit, and indicator light is bright.Power supply is through R3, the R4 dividing potential drop provides 4V fixing benchmark comparative voltage for the end of N1, another road is through R2, control voltage is provided for after RV and the RT dividing potential drop end of N1, when ambient temperature be higher than setting play controlling temperature the time, N1 terminal potential is lower than the terminal potential, the N1 output low level, about 2V, (VD6 must select the minimum person of reverse leakage less than the voltage stabilizing value of VD6, it is infinitely-great that ohmmeter X1K shelves record backward resistance), VS is not in cut-off state because of there being enough trigger currents, K1 can not move, and K1-1 is a normally off, and the electric fan that inserts socket has electricity and operate as normal.When ambient temperature descended, the resistance of RT increased along with the decline of ambient temperature, and the current potential of N1 end also and then raises; when the ring temperature drop when being lower than the starting to control of setting, the current potential of end will be higher than the current potential of end, so the state of N1 changes; output is a high level by low transition; nearly 8V, VD6 have electric current to flow through, and trigger the VS conducting; K1 gets electronic work; K1-1 is drawn back, cut off the power supply on the socket, electric fan is promptly shut down.According to the silicon controlled characteristic as can be known; in case controllable silicon conducting; will keep, even the ring temperature is gone up, the N1 output returns low level from the high level saltus step again always; VS still can keep conducting state; voltage unless break on the anode A restarts, therefore, and when after shutting down, needing to use once again; as long as turn-off S1, connection once gets final product again after a while.When not needing temperature control, turn-off S1 and can do the common socket use.

Claims

1, a kind of temperature control electric socket comprises supply socket, it is characterized in that it also comprises: rectifying and wave-filtering, stabilized voltage power supply, respectively to circuit supply; A voltage comparator N1, its inverting input is connected with the divider resistance R3 of reference voltage, the mid point of R4, divider resistance is attempted by the two ends of source of stable pressure output, the in-phase input end of N1 is connected with the mid point of the bleeder circuit that temperature adjustment resistance R V, thermo-sensitive resistor RT constitute, and RV, RT are connected to the two ends of source of stable pressure; The output OUT of N1 is connected with the control end G of an electronic switch, the A of electronic switch, K two ends and a drive coil K1 are in series, be attempted by the output two ends of rectifier U1, controlled normally-closed contact K1-1 and the described supply socket X1 of K1 are in series, and are connected the two ends of city's power supply.