CN2607601Y

CN2607601Y - Automatic thermostat for electric heating cotton-padded mattress

Info

Publication number: CN2607601Y
Application number: CN 03241511
Authority: CN
Inventors: 蒙回春
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-21
Filing date: 2003-03-21
Publication date: 2004-03-24
Anticipated expiration: 2013-03-21

Abstract

The utility model relates to an automatic thermostat for an electric blanket and is characterized in that signals input by a constant-temperature control unit is used to control an actuating unit which carries on a constant-temperature control on the load; a controller circuit is provided with a timing circuit which timely controls a temperature-rise program circuit; the temperature-rise program circuit is connected with the constant-temperature control unit; The constant-temperature control unit is triggered to change the output electric potential when the temperature rise is ended; the constant-temperature control, the temperature-rise program control and the timing power-cut control are realized through an oscillation of an oscillator, a high electric level input and a lower electric level output. The utility model has the advantages of a small power consumption and a modulated structure on the bases of a programmed-control temperature rise and automatic constant-temperature control, and increases and realizes timing power-cut or double-temperature double-control series products by adding the timing module.

Description

The electric blanket automatic thermostat

Technical field

The utility model relates to a kind of electric blanket automatic thermostat.

Background technology

(name is called: the general automatic thermostat of electric blanket), this patent is to adopt to make oscillator by time base circuit to the ZL92209505 Chinese patent that the inventor has applied for, utilizes oscillator that electric blanket is carried out thermostatic control.Because this patent can only be carried out thermostatic control, do not possess regularly power-down circuit, thereby usable range is limited; The power end that its heating schedule control is direct control generator is controlled, and the power consumption of requirement is big.

Summary of the invention

It is little that the purpose of this utility model just provides a kind of power consumption, has the structure of modular, and its basis is program control intensification and automatic constant-temperature, can add regularly module and realize the regularly electric blanket automatic thermostat of series of products such as power down function or double temperature double control type.

Solution of the present utility model is such: in the housing, utilize the signal controlling performance element of constant temperature unit output that thermostatic control is carried out in load, have in the controller circuitry by timing circuit and carry out time-controlled heating schedule circuit, the heating schedule control circuit is received temperature control unit, the duty of control constant temperature unit determines to export when its starting of oscillation still is failure of oscillation, failure of oscillation high level or low level.

Because temperature control unit is to adopt oscillator, when the oscillator oscillatory work, sends the wave of oscillation and carries out thermostatic control, this is a kind of duty of oscillator; Be in the intensification heated condition if utilize timing circuit to make temperature control unit before regularly finishing, keep the output high level just can keep temperature control unit; Be in regularly off-position if utilize another timing circuit to make temperature control unit after regularly finishing, keep output low level just can keep temperature control unit again.The utility model is exactly to utilize three kinds of duties of above-mentioned oscillator to realize thermostatic control, heating schedule control and regularly outage control.

The utility model has the advantages that power consumption is little, have the structure of modular, its basis is program control intensification and automatic constant-temperature, and adding time block increases series of products such as realizing timing power down function or double temperature double control type again.

Description of drawings

Accompanying drawing is embodiment of the present utility model.

Accompanying drawing 1 is the circuit theory diagrams that the utility model is realized the program control back automatic constant-temperature that heats up.

Accompanying drawing 2 is circuit block diagrams that the utility model is realized program control intensification, automatic constant-temperature, timing power down function.

Accompanying drawing 3 is physical circuit schematic diagrams of block diagram shown in the accompanying drawing 2.

Embodiment

The utility model is installed in the housing, utilize the signal controlling performance element of constant temperature unit output that thermostatic control is carried out in load, have by timing circuit and carry out time-controlled heating schedule circuit, the heating schedule control circuit is received temperature control unit, the duty of control constant temperature unit, determine to export when its starting of oscillation still is failure of oscillation, failure of oscillation high level or low level, heat up and finish back constant temperature unit starting of oscillation work, this technical scheme is the embodiment of the program control back automatic constant-temperature that heats up, and its circuit diagram as shown in Figure 1.

In circuit shown in the accompanying drawing 1, if add by timing circuit and carry out timing power-down circuit regularly, regularly power-down circuit is received temperature control unit, regularly in the phase, it is output as low level, and constant temperature unit is uncontrolled, finishes to send high level control temperature control unit in timing and is output as low level, this technical scheme is the embodiment of program control intensification, automatic constant-temperature, timing outage, and its circuit diagram is shown in accompanying drawing (2,3).

Described constant temperature unit is to be core by IC2, adopts 555 time base circuits to form oscillatory circuit; 7 pin of IC2 are received in the output of described timing circuit.

Described constant temperature unit is to be core by IC2, adopts 555 time base circuits to form oscillatory circuit; Described heating schedule circuit is to be made of switch S 1, transistor (V1, V2) and capacitor C 3, and transistor V2 receives 7 pin of IC2.

Described timing circuit is to be made of switch S 2, transistor V3, capacitor C 4 and IC1, and 6 pin of IC2 are received in the output of IC1.IC1 adopts 555 time base circuits.

The principle of work of heating schedule circuit is: as touch-switch S1, capacitor C 3, transistor (V1, V2) is satisfied and is closed conducting, the 7th pin of IC2 by pincers in low level, the 3 pin output high level of IC2, trigger controllable silicon SCR 1, SCR2 conducting, electric blanket RFZ1, RFZ2 are heated, be soaking condition; When voltage drop on the capacitor C 3 when being lower than the valve level of V1, transistor (V1, V2) ends, the current collection of V2 is high level very, promptly 7 pin of IC2 are high level, the IC2 starting of oscillation, constant temperature unit is worked under temperature constant state, has finished heating schedule, enters the constant temperature program.If do not need to heat up, then do not press switch S 1, opening power just can be worked under temperature constant state, the course of work of Here it is circuit shown in the accompanying drawing 1.

Regularly the principle of work of power-down circuit is: in the time of need regularly cutting off the power supply, and touch-switch S2, capacitor C 4, V3 launches very high level, and IC1 is output as low level, because the buffer action of diode D6, IC2 is controlled by the heating schedule circuit, determines that in intensification still be temperature constant state work.When the threshold level of V3 is arrived in voltage drop on the capacitor C 4, V3 ends, the e of V3 is low level very, IC1 exports high level, by R6, D6 commissure 2,6 pin to IC2, the current potential of this bipod is elevated, and 3 pin of IC2 are low level, controllable silicon SCR 1, SCR2 can't trigger, and electric blanket RFZ1, RFZ2 outage quits work; Temperature control unit is in holding state, and up to pressing switch S 2 once more, temperature control unit is started working again, reaches regularly power down function.Automatically change constant temperature work over to after heating up if desired, outage automatically then then needs touch-switch (S1, S2) simultaneously; Touch S2 separately, the back outage of then can only under temperature constant state, working.

Control execution unit is made up of switch (K1, K2), resistance (R13, R14), LED2, LED3, SCR1, SCR2, and present embodiment is to provide the double temperature double control structure, control K1 and K2, and the work that just can determine load is whether.When only adopting a load, need not use K switch 1, K2, and remove to trigger a SCR with a resistance, a LED, just can drive loaded work piece.Whether the bringing onto load work of decision institute, and the output that is exactly IC2 is high level or low level, and load just quits work during low level.

Integrated circuit (IC) 1, IC2 also can adopt other model to substitute.

Claims

1, a kind of electric blanket automatic thermostat, be mounted in the housing, utilize the signal controlling performance element of constant temperature unit output that thermostatic control is carried out in load, it is characterized in that having by timing circuit and carry out time-controlled heating schedule circuit, the heating schedule control circuit is received temperature control unit, and the output potential that triggers temperature control unit when heating up changes.

2, electric blanket automatic thermostat according to claim 1 is characterized in that described constant temperature unit is is core by IC2, adopts 555 time base circuits to form oscillatory circuit; 7 pin of IC2 are received in the output of described timing circuit.

3, electric blanket automatic thermostat according to claim 2 is characterized in that described constant temperature unit is is core by IC2, adopts 555 time base circuits to form oscillatory circuit; Described timing circuit is to be made of switch S 1, transistor (V1, V2) and capacitor C 3, and transistor V2 receives 7 pin of IC2.

4, according to claim 1 or 2 or 3 described electric blanket automatic thermostat, it is characterized in that also having and carry out timing power-down circuit regularly by timing circuit, regularly power-down circuit is received temperature control unit, is output as low level at the signal controlling temperature control unit that regularly finishes to send.

5, electric blanket automatic thermostat according to claim 4 is characterized in that described timing circuit is to be made of switch S 2, transistor V3, capacitor C 4 and IC1, and 6 pin of IC2 are received in the output of IC1.