CN2140595Y - General automatic thermostat for electrothermal blanket - Google Patents

Abstract

The utility model relates to a general automatic thermostat for electrothermal blanket, which comprises a casing 1, a power supply circuit, a temperature rising automatic program circuit, a thermostatic setting circuit and a controlling executive circuit. The output signal of the temperature rising automatic program circuit ic 1 is used as the working power supply of the thermostatic setting circuit to control the working state of the thermostatic setting circuit, the output end of the temperature rising automatic program circuit and the output end of the thermostatic setting circuit are respectively connected with the control ends of the controlling executive circuit, the electrothermal blanket is controlled by the controlling executive circuit, and the temperature rising control is automatically changed into the thermostatic control. The utility model has the advantages that the temperature rising efficacy and the wet driving efficacy of the electrothermal blanket before retiring is retained, the energy conservation effect is favorable, the processing technique of the automatic thermostatic type electrothermal blanket is simple by using the utility model, and the universality is high.

Description

General automatic thermostat for electrothermal blanket

The utility model belongs to the general self-acting thermos of a kind of electric blanket.

The electric blanket thermostat has been developed into by the manual temperature control type at initial stage and has utilized bed temperature (point or line) sampling to reach temperature automatically controlled thermostat at present, adopt the electric blanket complex manufacturing of this class automatic thermostat, cost is higher, in case the bed temperature of sampling is put fixed back with regard to temperature automatically controlled (the required bed temperature of sleeping), can't realize that electric blanket heats up to drive the peculiar effect of the wet tide of dispelling to bed before sleeping.Because of being difficult to guarantee everyone, the automatic thermostat of point, line sampling can both lie on the sampling point put, the line again, so its temperature control effect is undesirable, both made to lie on the sampling point put, the line, just can not obtain desirable actual bed temperature if standing up displacement has departed from after sampling point, the line.

The utility model purpose is to provide a kind of simple production technology that had both kept original manual type electric blanket, and don't need the sampling temperature adjustment just can to electric blanket carry out automatic temperature-adjusting control and manufacturing cost lower, and can keep electric blanket sleeping before to the heat up general self-acting thermos of electric blanket of the peculiar effect of driving the protection against the tide of wetting of bed clothes on the bed.

Self-acting thermos provided by the utility model comprises that power circuit, constant temperature are put and decides circuit, control executive circuit that put at power circuit and constant temperature and decide to be provided with between the circuit intensification auto-programming circuit, it is by button S ₁, transistor V ₁, V ₂, capacitor C ₃, resistance R ₁, R ₂, R ₃With time-base circuit IC ₁Constitute S ₁, C ₃The serial connection back is connected V with power circuit ₁Base stage be connected in S ₁With capacitor C ₃Between the positive pole, the output of its (emitter) and time-base circuit IC ₁2., 6. pin connects together, IC ₁3. pin (output) provide constant temperature to put to decide circuit work power, put the operating state of deciding circuit, transistor V with control constant temperature ₂Base stage be connected in IC again ₁3. pin on, its collector electrode is connected with the input of control executive circuit, constant temperature is put on the input that the output of deciding circuit also is connected in the control executive circuit, is controlled the operating state of electric blanket by the control executive circuit.Press S after connecting with the mains ₁, C ₃Charging, V ₁Conducting, V ₁Emitter (output) be high level, this moment input be connected in V ₁Time-base circuit IC on the emitter ₁3. pin (output) output low level, nip constant temperature put the current potential of deciding circuit, constant temperature is put and is decided the circuit dead electricity and do not work, and base stage is connected in IC ₁3. the transistor V on the pin (output) ₂Be in cut-off state, its collector electrode output high level, control executive circuit energising work, electric blanket is heated up.The process scheduled time is promptly worked as C ₃Last discharge back voltage repeatedly arrives deficiency down so that V ₁During conducting, IC ₁2., 6. the pin input becomes low level, IC ₁3. pin (output) be turned to high level from low level immediately, constant temperature is put and is decided circuit and get electric work, promptly the temperature-rise period of electric blanket changes temperature constant state over to after finishing automatically.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1---be functional-block diagram of the present utility model

Fig. 2---be the electrical schematic diagram of the embodiment of Fig. 1

Fig. 3---be the utility model face shaping schematic diagram

Fig. 4---be the utility model stereoscopic schematic diagram

As shown in Figure 1, 2, the utility model comprise power circuit, intensification auto-programming circuit, constant temperature put decide circuit, control executive circuit.By capacitor C ₁, C ₂, diode D ₁, D ₂, voltage stabilizing didoe D ₃Form DC-stabilized circuit and supply with the working power of intensification auto-programming circuit, intensification auto-programming circuit is by button S ₁, capacitor C ₃, transistor V ₁, V ₂, resistance R ₁-R ₃Timely basic IC circuit ₁Constitute.Button S ₁With capacitor C ₃Positive pole connect the back and insert power circuit, transistor V ₁Base stage be connected in button S ₁With C ₃Positive pole between, as the S that pushes button ₁The time, C ₃Be recharged, at this moment V ₁Saturation conduction, its emitter output high level.IC ₁2., 6. pin connects back and V ₁Emitter link to each other, so IC ₁Output (3. pin) be low level.Because of IC ₁3. pin (output) through resistance R ₂With transistor V ₂Base stage link to each other, make V ₂By its collector electrode output high level, V ₂Collector electrode be connected with the control end of control circuit, control executive circuit comprise R ₇, R ₈, LED ₁, LED ₂, bidirectional triode thyristor SCR.R ₇, R ₈Respectively with LED ₂, LED ₁Negative pole link to each other to connect together again and be connected on the control end of bidirectional triode thyristor SCR, by the conducting of bidirectional triode thyristor SCR with by control electric blanket R _F2Operating state.Resistance R ₈The other end and transistor V ₂Collector electrode link to each other, this moment V ₂Output signal through R ₈, LED ₁Trigger the SCR conducting, electric blanket R _FzGet electric intensification, simultaneously IC ₁Output 3. pin put the working power of deciding circuit as constant temperature again, because of IC ₁(3. pin) output is a low level, and constant temperature is put and decided the circuit dead electricity and do not work.Work as C ₃Pass through V ₁, R ₁Discharge into and to keep V ₁During conducting, i.e. V ₁End IC ₁Input 2., 6. pin is a low level, its output 3. pin upset is high level, V ₂Saturation conduction, its collector electrode output becomes low level, LED ₁Extinguish, CSR ends, and electric blanket is finished temperature-rise period, is connected in IC simultaneously ₁3. the constant temperature on the pin is put and is decided circuit and get electric work and change temperature constant state automatically over to.Constant temperature is put and is decided circuit by time-base circuit IC ₂, variable resistor W ₁, resistance R ₄-R ₆, capacitor C ₄, C ₅, diode D ₄, D ₅Form astatic multivibrator.IC ₂Power end and IC ₁Output (3. pin) connect its output and resistance R ₇Connect.Because IC ₁Its output after overturning (3. pin) keeps high level, constant temperature to put deciding circuit to establish by cable starting from exciting swinging always, passes through IC ₂3. the output duty cycle of pin (adjustable) is controlled the conducting of bidirectional triode thyristor SCR and is ended, thereby realizes the automatic constant-temperature of electric blanket.Regulate W ₁, just can put basic, normal, high (stepless) the different constant temperature value of deciding electric blanket.This thermostat is marked with attaching plug 2(in housing 1 embedding and sees Fig. 4), thereby avoided thermostat being put the unsafe factor that brings in bed in the past, in order directly and to have a large amount of manual temperature control type electric blanket adapteds now, under housing 1, be provided with socket aperture 3, as long as the temperature regulating switch of manual temperature control type electric blanket is pushed the high temperature shelves, with its plug insertion socket hole 3, can realize heating up automatically and constant temperature.If on mould, adopt removable pin to realize with the supporting socket aperture 3(that cancels of manufacturer), utilize lower housing portion preformed hole 4 line of common electric blanket can be introduced welding, make it become automatic constant-temperature type electric blanket.

As a kind of conversion of the present utility model, the time-base circuit IC of intensification auto-programming circuit ₁, can substitute by other single-shot trigger trigger.

The utility model is compared with existing automatic thermostat for electric heating cotton-padded has following advantage: 1. because it does not need the temperature adjustment of taking a sample, therefore can keep simple production technology and the cost of manual temperature control type electric blanket lower. 2. because this thermostat is provided with intensification auto-programming circuit, before sleeping, bed clothes on the bed to be heated and drive wet peculiar effect so can keep electric blanket, it can change constant temperature over to after heating up automatically, and the constant temperature value is stepless adjustable, good constant-temperature effect. 3. because being provided with socket aperture or preformed hole at housing, can with the direct adapted of common manual temperature control type electric blanket, it is supporting with the producer that produces electric blanket also to can be used as parts, so its highly versatile. 4. good energy-conserving effect.

Claims (4)

1, the general self-acting thermos of a kind of electric blanket comprises that housing (1), power circuit, constant temperature are put and decides circuit, control executive circuit, it is characterized in that by button S ₁, capacitor C ₃, resistance R ₁-R ₃, transistor V ₁, V ₂Timely basic IC circuit ₁The intensification auto-programming circuit of forming is arranged on power circuit and constant temperature and puts and decide between the circuit button S ₁With C ₃Positive pole be connected on the power circuit transistor V after connecting ₁Base stage be connected in S ₁With C ₃Positive pole between, its emitter and time-base circuit IC ₁Input (connect together 2., 6. pin) link to each other IC ₁Output 3. pin put the power end of deciding circuit with constant temperature and be connected, by IC ₁Output signal control constant temperature put the operating state of deciding circuit, constant temperature is put the output of deciding circuit and is connected while transistor V with the control end of control executive circuit ₂Pass through resistance R ₂Be connected on IC ₁Output 3. on the pin, and V ₂Collector electrode also be connected with the control end of control circuit, by the operating state of control executive circuit control electric blanket.

2, self-acting thermos according to claim 1 is characterized in that constant temperature is put and decides circuit by time-base circuit IC ₂, variable resistor W ₁, resistance R ₄-R ₆, capacitor C ₄, C ₅, diode D ₄, D ₅The astatic multivibrator of forming, time-base circuit IC ₂Power end (4., 8. pin) and IC ₁Output (3. pin) connect, its output (3. pin) is connected with the control end of controlling executive circuit.

3, self-acting thermos according to claim 1 is characterized in that time-base circuit IC ₁Can adopt other single-shot trigger triggers.

4, according to claim 1 or 2 or 3 described self-acting thermos, it is characterized in that embedding is marked with attaching plug (2) on the housing 1, be provided with socket aperture (3) or preformed hole (4) under it.

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