CN2171221Y

CN2171221Y - Temp. controlled electrothermal clothes with protection function

Info

Publication number: CN2171221Y
Application number: CN 93242397
Authority: CN
Inventors: 王再祥
Original assignee: Bailin Electrical Equipment Co Ltd China-Foreign Joint-Ventured Enterprise (c
Current assignee: Bailin Electrical Equipment Co Ltd China-Foreign Joint-Ventured Enterprise (c
Priority date: 1993-10-16
Filing date: 1993-10-16
Publication date: 1994-07-13
Anticipated expiration: 2003-10-16

Abstract

The utility model relates to a temperature controlled electrothermal clothing with protection function, comprising an accumulator, a heating body, facing material, lining and a temperature controlled protector, wherein, the temperature controlled protector has the functions of controlling the temperature, overheating the heating body and over discharging the accumulator. Therefore, the utility model has the advantages of stable working performance, reliable operation and controllable temperature of the heating body, and can effectively protect the accumulator from damage owing to over discharge so as to prolong the service life of the accumulator.

Description

Temp. controlled electrothermal clothes with protection function

The utility model relates to a kind of by the portable storage battery power supply, and has the thermostat galvanothermy clothes of defencive function, belongs to daily necessities.

According to preliminary search, there be not to find the electric heating clothes identical with the utility model.Electric heating clothes of the prior art does not all have the temperature control protective device, though they have characteristics such as simple in structure, easy to manufacture, exposes many deficiencies yet, and is easily out of control and cause overheated, storage battery because of the overdischarge damage etc. as temperature.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of thermostat galvanothermy clothes with temperature control and overheated, over, warning function is provided.

The purpose of this utility model can reach by following measure: a temperature-control protector with temperature control and overheated (broken down cause by the temperature sampling loop), over (send sound simultaneously, light is reported to the police) function is set between storage battery and electric heating clothes heater.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the temperature-control protector electrical schematic diagram in the utility model.

Be described in further detail below in conjunction with accompanying drawing:

Shown in Figure 1, (1) is storage battery, can adopt the portable hermetically sealed cell of 6 volt of 2.2 ampere-hour in the utility model; (2) plug that is connected with storage battery for temperature-control protector; (3) be temperature-control protector; (4) be the temperature sampling element (adopting the thermistor Rt of tool negative temperature characteristic) of temperature-control protector; (5) be heater, make with heating wire usually that (6), (7) are respectively the lining and the lining of electric heating clothes.Temperature-control protector (3) goes up corresponding socket with plug with storage battery (1) and heater (5) and is connected; heater (5) is made between lining (6) and lining (7); temperature sampling element (4)--thermistor Rt can be fixed on any position of being close to heater (5); in order when wearing, to avoid extruding, to bump and block, should be fixed on below the shoulder of electric heating clothes anter.The utility model is except being provided with the temperature-control protector (3) (its structural principle will be illustrated hereinafter) between storage battery (1) and heater (5), and the combination between the other parts is identical with electric heating clothes of the prior art, so do not give unnecessary details.

In the temperature-control protector electrical schematic diagram shown in Figure 2; temperature-control protector is by temperature control and overheated; two unit of over and sound and light alarm thereof constitute; wherein temperature conditioning unit is by voltage comparator ic 1; IC2 and the switching amplifier BG1(PNP type that controlled by IC1) form; R1; Rt is connected on voltage stabilizing circuit (by R6; DW and C1 constitute; the voltage stabilizing value is lower than the whole discharge voltage of storage battery) "+"; between "-" output; be the temperature sampling microwave network; its common junction meets IC1; the inverting input of IC2; be connected on "+" of voltage stabilizing circuit; W between "-" output; R2 and R3 are the reference voltage sample resistance of the in-phase input end of IC2; the IC1 in-phase input end is in parallel with the IC2 output after R5 connects voltage stabilizing circuit "+" end; the IC1 output connects the BG1 base stage through R7; R8 is the BG1 emitter resistance; the winding of relay J is the BG1 load; D1 is the protection diode; the a pair of normally open contact of relay J and heater (RL) are serially connected in storage battery the two poles of the earth, the parallel branch R20 of heater; the LED2(green) is the work indication.The setting of the initial condition of this unit: IC1, IC2 inverting input current potential are higher than in-phase input end, and BG1 is in conducting state.Overheated, over and acousto-optic warning unit thereof are made up of transistor (NPN type) switching circuit BG2, BG3 voltage comparator ic 3, RC oscillator IC4 and buzzer Y.BG3 and IC3 are overheated, over circuit, contact, collector electrode that the BG2 base stage meets R1, Rt meet storage battery "+" utmost point, emitter-base bandgap grading and IC3 in-phase input end voltage sampling resistor R11, R12 and are connected between storage battery "+", "-" utmost point, be the supply voltage sampling microwave network, the IC3 output connects the BG1 base stage through D2; (NPN type) transistor BG3, RC oscillator IC4 and related elements R13-19, C2, LED1(redness), buzzer Y constitutes sound light alarming circuit.This unit initialization state is provided with: BG2, BG3 end, and IC3, IC4 reversed-phase output current potential are higher than in-phase input end, and RC oscillator IC4 does not work.

Operation principle of the present utility model is as follows:

Heat temperature raising and insulation plug in behind the plug, because of IC4, IC2 inverting input level is higher than in-phase input end, so the IC1 output low level, BG1 conducting this moment, the relay winding gets, the normally open contact adhesive, electric current flows through heater (LED2 lights, green), and the electric heating clothes temperature rises gradually, the Rt resistance begins to reduce, both end voltage also reduces thereupon, prescribes a time limit IC2 when temperature is raised to going up of setting, the IC1 upset, BG1 ends, relay normally open contact discharges because of the winding dead electricity, the heater no current flows through and no longer heat up (this moment, LED2 extinguished), and electric heating clothes transfers insulation to by intensification, as time passes, temperature reduces gradually, the Rt resistance raises gradually, and both end voltage rises gradually, IC1, IC2, BG1 overturns once more, electric heating clothes changes heat temperature raising again over to, carries out so again and again.

In a single day break down between the overtemperature protection input 1,2 (Rt lost efficacy or the input open circuit); BG2, BG3 conducting, IC3 overturn by (output high potential), force BG1 to end, and IC4 vibration, buzzer send chimes of doom; LED1 lights indication, and heater and storage battery disconnect.

Over is along with the storage battery both end voltage reduces; IC3 inverting input current potential descends thereupon; in case drop to less than the in-phase input end current potential; the IC3 counter-rotating; BG1 is ended; heater and storage battery disconnect, IC4 vibration, buzzer warning (stopping to report to the police after pulling up storage battery).

The utility model compared with prior art, except stable performance, outside the characteristics such as reliable operation, heater temperature are controlled, maximum advantage is effectively to protect battery to avoid overdischarge and damage, and has guaranteed the service life of battery.

Claims

1, a kind of thermostat galvanothermy clothes with defencive function, except storage battery, heater, lining and 4 elements of lining, it is characterized in that also being provided with between storage battery and the heater temperature-control protector, it comprises temperature control and overheated, over and two unit of sound and light alarm thereof, temperature conditioning unit is formed (IC1, IC2 inverting input current potential are higher than in-phase input end, and BG1 is in conducting) by voltage comparator ic 1, IC2 and switching amplifier BG1; Overheated, over alarm unit is made up of switching circuit BG2, BG3 (initial condition all by), voltage comparator ic 3, RC oscillator IC4 (initial condition: IC3, IC4 inverting input current potential are higher than in-phase input end, and oscillator is not worked) and buzzer.

2; electric heating clothes according to claim 1; voltage comparator ic 1 in its temperature-control protector temperature conditioning unit; the inverting input of discharge circuit IC2 is attempted by R1; the branch pressure side of Rt sampling network; the in-phase input end of IC1 is in parallel with the IC2 output; IC1 exports termination BG1 input (base loop); overheated; the over alarm unit meets R1 by switching circuit BG2(base stage; the Rt sampling network divides pressure side); voltage comparator ic 3(in-phase input end connects the BG3 emitter-base bandgap grading, and output connects the BG base stage through D2) protective circuit and the IC4 that form; BG3 warning indicating circuit constitutes.