CN2069280U

CN2069280U - Full-automatic ozone generator for refvigerator

Info

Publication number: CN2069280U
Application number: CN 90212292
Authority: CN
Inventors: 洪光中
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-01
Filing date: 1990-06-01
Publication date: 1991-01-16

Abstract

The utility model discloses a deodorization, sterilization and fresh preservation device for refrigerator, in particular to a full-automatic ozone generator for refrigerator, which mainly being composed of a drive circuit, a gas discharge tube Q, and a timing circuit (adopting isolated component or integrated circuit) When the pressure of capacitance C1 of the drive circuit achieves a certain value, a silicon controlled SCR is triggered to conduct electricity and the first coil L4 of a pulse transformer B2 discharges at the moment of conducting SCR. Both ends of the secondary stage L5 of the pulse transformer B2 generate the pulse high pressure over 5000V, and the inside of the gas discharge tube Q generates intense discharge spark and O type gas. The timing circuit is timed to delay 8 hours and the start-up work plays function after 4 minutes.

Description

Full-automatic ozone generator for refvigerator

This utility model provides is a kind of deodorization in the refrigerator, sterilization, fresh-keeping device---refrigerator full-automatic ozone generator of being used for.

Prior art is as full-automatic refrigerator disinfecting sterilization fresh deodoriser (application number 89205461.1).What it adopted is made up of step-down rectifying circuit, high-pressure generating circuit, amplitude limiter circuit, counting circuit etc.It finishes evaluation work with 50 all square wave frequencies (being similar to) as calculating incoming frequency, reaches by foot Q12, Q13, the Q14 contact that changes CMSIC1 to change working time and off time, thereby realizes the full-automatic time-controlled purpose of refrigerator.Its structure more complicated is used for alternating current power supply, inconvenience.

The purpose of this utility model is to propose a kind of employing dc source (No. 5 batteries of four joints), adopt drive circuit, timing circuit, and it has, and power consumption is little, efficient is high, easy to use.Can delay time startup work 4 minutes 8 hours.

Technical solution of the present utility model: it is by a drive circuit (see figure 1), timing circuit (seeing Fig. 2, Fig. 3) and gas-discharge tube (having now).

Accompanying drawing 1 is a drive circuit schematic diagram of the present utility model.

Accompanying drawing 2 is timing circuits that this utility model adopts discrete original paper to form.

Accompanying drawing 3 is timing circuits that this utility model adopts integrated circuit to form.

Provide technical solution of the present utility model in detail below in conjunction with accompanying drawing:

Circuit as shown in Figure 1.Operation principle is as follows: crystal triode BG1, BG2, inductance coil L1, L2, resistance R 1, R2 constitute push-pull oscillator, and crystal triode BG3, BG4 constitute electrical switch.B1 is a booster transformer, and L3 is a step-up coil.When BG3, BG4 conducting, the agitator starting of oscillation, the L3 two ends can generate 100 volts of (virtual value) alternating voltages (non-sinusoidal waveform).After diode D1 rectification,, charge to capacitor C 1 through resistance R 3 simultaneously to energy storage capacitor C2 charging.When C1 goes up voltage and reaches certain value, the controllable silicon SCR conducting that is triggered.SCR conducting moment, the electric charge on the C2 is released rapidly through the primary coil L4 of SCR pulse transformer B2.Produce the high voltage pulse more than 5000 volts simultaneously at the secondary L5 two ends of B2, in gas-discharge tube Q, produce intensive discharge spark, thereby produce O ₃Gas.During the SCR conducting, oscillator loading increases the weight of and is forced to failure of oscillation, and the electric charge on the C2 bleeds off, and SCR turn-offs, and agitator is starting of oscillation again, and the repetition said process that goes round and begins again is till electrical switch BG3, BG4 end.This circuit oscillation frequency is 45HZ～50HZ.

Discrete component timing circuit principle (see figure 2).

After the energized, press button AN, bistable circuit " A " some output high potential, crystal triode BG13, BG14 conducting trigger drive circuit works.Because of " A " high potential, the work delay circuit of making is started working, and electric current gives capacitor C 21 chargings through R5.When charging to the scheduled time (4 minutes), double base diode BG7 exports a direct impulse, and this pulse ends audion BG5, the BG6 conducting, " A " some current potential is immediately by high step-down (0.6 volt), and electrical switch BG13, BG14 close, and drive circuit quits work.

" A " some current potential step-down, " B " some current potential uprises, and the double base diode BG8 in the delay circuit at intermittence starts working at this moment, and electric current gives capacitor C 22 chargings through R17.When being charged to the scheduled time (8 hours), BG8 exports a positive pulse, makes that BG6 ends, the BG5 conducting, and " A " some current potential uprises at this moment, " B " current potential step-down, and intermittently time-delay quits work, and drive circuit is started working.

Integrated timing circuit operation principle (see figure 3).

1/2 7556 intervalometers are connected into the multivibrator working method, and the C31 timing capacitor (R34+R35) is charging resistor, and R35 is a discharge resistance, and the diagram circuit oscillation cycle is 45 minutes.

Decade computer (frequency divider) CD4017 forms the time-delay multiple circuit, and this circuit can double the pulse period of 7556 outputs 10 times.(about 450 minutes).

It is 10% multivibrator that 1/2 7556 intervalometers are connected into occupation efficiency, is controlled by king oiscillator.Capacitor C 41 is timing capacitors among the figure, and resistance R 18, diode D14, capacitor C 41 are charge circuits, and diode D13, resistance R 19 are discharge loops.

This circuit was closed electrical switch BG33, BG34 4 minutes, disconnected 8 hours,, thus made drive circuit works 4 minutes, stop 8 hours, so circulation.

The utlity model has function: adopted the little drive circuit of power consumption, power consumption is little, the efficient height, and four joint No.5 cells can be with more than 40 days. This machine timing circuit reliable operation, volume is little.

Claims

1, a kind of by drive circuit, gas-discharge tube, the refrigerator full-automatic ozone generator that timing circuit is formed, it is characterized in that drive circuit: as crystal triode BG3, the BG4 conducting, the agitator starting of oscillation, step-up coil L3 two ends can generate 100 volts of alternating voltages, charge to energy storage capacitor through diode D1 rectification, charge to capacitor C 1 through resistance R 3 simultaneously, the last voltage of C1 reaches the conducting of certain value controllable silicon SCR, electric charge is through SCR on the capacitor C 2, the coil L4 of transformator B2 releases, produce 5000 volts of above high voltage pulses at the secondary L5 two ends of B2 simultaneously, gas-discharge tube Q discharge spark produces O gas, during the SCR conducting, the blocking of oscillator, electric charge on the capacitor C 2 bleeds off back SCR and turn-offs, agitator is starting of oscillation again, until electrical switch BG3, BG4 ends; Timing circuit: press button AN, bistable circuit " A " some output high potential, crystal triode BG13, the BG14 conducting, trigger drive circuit works, delay circuit work, electric current gives capacitor C 21 chargings through resistance R 5,4 minutes charging intervals, double base diode BG7 exports direct impulse, and BG5 ends, the BG6 conducting, " A " some current potential step-down, BG3, BG4 closes, and drive circuit quits work, and the double base diode BG8 in the delay circuit at intermittence starts working at this moment, electric current charges to C22 through R17, in 8 hours charging intervals, BG8 output positive pulse is ended BG6, the BG5 conducting, " A " some current potential uprises, " B " some current potential step-down, intermittently delay circuit quits work, and drive circuit works stops.

2, refrigerator full-automatic ozone generator according to claim 1, it is characterized in that timing circuit can adopt integrated timing circuit, 1/2 7556 intervalometers are connected into the multivibrator working method, capacitor C 31 is timing capacitors, charging resistor R34+R35, discharge resistance R35, decade computer (frequency divider) CD4017 form the time-delay multiple circuit, and the pulse period of 7556 outputs is doubled 10 times;

It is 10% multivibrator that 1/2 7556 intervalometers are connected into occupation efficiency, be controlled by king oiscillator, capacitor C 41 is timing capacitors, resistance R 18, diode D14, C41 are main electric loops, diode D13, resistance R 19 are discharge loops, audion BG34, BG33 are electrical switches, close 4 minutes, disconnect 8 hours.