Automatic electronic drying container at normal temp.

Automatic electronic drying container at normal temp.

  • CN 2,159,540 Y
  • Filed: 03/20/1993
  • Issued: 03/23/1994
  • Est. Priority Date: 03/20/1993
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of autoelectrinic air drying case of being made up of casing (1), drier (2) and control circuit is characterized in that:

  • A, drier (2) is PTC heater (9) to be housed with one in it, and around PTC heater (9), filling efficient hygroscopic agent (18) and the surface has many eyelets, its cross section is trapezoidal moisture absorption box (8) and is placed at one and has in the housing (7) that two fans open and close the damp suction door (11) of interlockings and damp exhausting door (17), and to allow the long base of this moisture absorption box (8) trapezoid cross section facing to the damp suction door (11) of housing (7), short base is facing to the damp exhausting door (17) of housing (7), also will allow the prism of moisture absorption box (8) tilt 20 °

    -35 ° and

    constitute here to damp exhausting door (17) simultaneously;

    B, again this drier (2) is installed in the hole place that is opened on the sidewall of a reliable sealing casing (1), and allows damp exhausting door (17) stretch, can communicate with atmosphere after opening from this hole;

    C, its control circuit have one by resistance-type humidity sensor RH, resistance temperature detector TH and operational amplifier IC 1aAnd the relative air humidity detector of its peripheral cell formation, it is with operational amplifier IC 1aAnd after peripheral cell constitutes an oscillator, allow capacitor C 3, resistance-type humidity sensor RH, resistance temperature detector TH be serially connected between the output and ground of this oscillator;

    D, control circuit also have one by operational amplifier IC 1dThe voltage comparator that constitutes is as driving damp control circuit, and it is by operational amplifier IC 1d, the resistance that are connected in parallel between power supply and the ground of fourth gear interlock switch K and four groups constitute IC 1d" ten " input and R 10Join, the cutter spacing of " one " input and fourth gear interlock switch K is joined, and four gears of K switch respectively with R 11And VR 3Connect power supply after the series connection, with R 12And VR 4Connect power supply after the series connection, with R 13And VR 5Connect power supply after the series connection, with R 14And VR 6Connect power supply after the series connection, and IC 1dOutput as ic chip 4, IC 5, IC 6Working power;

    E, in control circuit, also has one by ic chip 3, IC 4, IC 5The dual-time timer of forming, their power input all with IC 1dOutput join IC 33 pin pass through D on the one hand 6Join with 12 pin of oneself, on the one hand again with IC 414 pin join IC 39 pin and 10 pin pass through C respectively 9And R 20With R 21After the serial connection, again with IC 51 pin and 10 pin join IC 310 pin respectively by adjustable resistance VR 8And VR 7With IC 52 pin and 11 pin join;

    And IC 43 pin pass through resistance R on the one hand 22With switch transistor T 3Base stage join, on the other hand with IC 512 pin join IC 42 pin and IC 513 pin join, IC 44 pin pass through D 7Join with 15 pin of oneself;

    F, the D that in control circuit, shows as humidity value 11, D 12, D 13, D 14Four light emitting diodes are the output footpath R that pass through four operational amplifiers respectively 15, R 16, R 17, R 18Drive, and " ten " input and the IC of these four operational amplifiers 1d" ten " input join, and four " one " input A, B, C, D respectively with VR 3, VR 4, VR 5, VR 6Tap A, B, C, D join.

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