CN214018574U - Self-checking disinfection system of household disinfection cabinet - Google Patents

Abstract

The utility model discloses a domestic sterilizer self-checking disinfection system relates to the sterilizer, include: the door lock switch circuit is used for outputting a trigger signal when the cabinet door is closed; the timing circuit is connected with the door lock switch circuit and responds to the trigger signal to output a detection instruction signal once at set intervals; the humidity detection circuit is connected with the timing circuit and is used for detecting the humidity in the current cabinet to output a corresponding humidity detection signal after receiving the detection instruction signal; the comparison circuit is connected with the humidity detection circuit and outputs a starting signal when the humidity detection signal is higher than the humidity reference signal; and the first switching circuit is connected with the comparison circuit and is conducted in response to the starting signal so as to supply power to the disinfection device and the dehumidification device for working. The whole process is automatically completed when the humidity is detected to be overlarge periodically, so that the purposes of disinfection and dehumidification are achieved, the service life of the disinfection cabinet can be prolonged, and convenience is brought to use.

Description

Self-checking disinfection system of household disinfection cabinet

Technical Field

The utility model relates to a sterilizer, more specifically say, it relates to a domestic sterilizer self-checking disinfection system.

Background

The sterilizer is through ultraviolet ray, far infrared, high temperature, modes such as ozone, the instrument of disinfecting and dehumidifying is disinfected and carried out for articles such as tableware, the sterilizer can replace ordinary cupboard to play the effect of keeping a public place clean of avoiding clean bowl chopsticks secondary pollution, but if the sterilizer is out of work for a long time, humid air in the sterilizer is difficult to in time discharge, can cause to form the warm humid environment that does benefit to the bacterial reproduction in the cabinet, thereby make the bacterium breed fast and adhere to on the tableware, harm health, shorten the life of sterilizer.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a domestic sterilizer self-checking disinfection system in order to solve the above-mentioned problem, can regularly detect humidity in the cabinet and disinfect disinfection and dehumidification when humidity is great.

The above technical purpose of the present invention can be achieved by the following technical solutions: a home sterilizer self-test sterilization system, comprising: the door lock switch circuit is used for outputting a trigger signal when the cabinet door is closed; the timing circuit is connected with the door lock switch circuit and responds to the trigger signal to output a detection instruction signal once at set intervals; the humidity detection circuit is connected with the timing circuit and is used for detecting the humidity in the current cabinet to output a corresponding humidity detection signal after receiving the detection instruction signal; the comparison circuit is connected with the humidity detection circuit and outputs a starting signal when the humidity detection signal is higher than the humidity reference signal; and the first switching circuit is connected with the comparison circuit and is conducted in response to the starting signal so as to supply power to the disinfection device and the dehumidification device for working.

By adopting the technical scheme, after the cabinet door is closed, the timing circuit outputs a detection instruction signal at intervals for setting time, so that the humidity detection circuit can detect the humidity condition in the cabinet at intervals, the comparison circuit compares whether the detected humidity detection signal is greater than a humidity reference signal or not, the humidity reference signal corresponds to a humidity reference value for judging that sterilization and disinfection are needed, when the detected humidity is greater than the reference value, the comparison circuit outputs a starting signal, the first switch circuit responds to the starting signal for conduction, and then supplies power to the disinfection device and the dehumidification device, so as to carry out ultraviolet sterilization and disinfection in the cabinet and utilize a fan to pump out moisture in the cabinet, the whole process is automatically completed when the humidity is detected to be overlarge at regular time, the periodic automatic opening is carried out without manual operation, the defect that the disinfection cabinet is in a humid environment to promote the propagation of harmful bacteria when the disinfection cabinet is not used for a long time is overcome, not only achieves the purpose of disinfection and dehumidification, but also can prolong the service life of the disinfection cabinet and bring convenience to the use.

The utility model discloses further set up to: the automatic control system further comprises a second switch circuit which is conducted to supply power to the disinfection device and the dehumidification device when the manual trigger is conducted, and a self-locking circuit which maintains the preset long-time working state of the disinfection device and the dehumidification device after the second switch circuit is conducted.

Through adopting above-mentioned technical scheme, through opening of artificial control second switch circuit, and then give degassing unit and dehydrating unit power supply, make it carry out ultraviolet sterilization disinfection and moisture to take out in the cabinet, and can auto-power-off stop work after long when predetermineeing, avoid disinfection dehumidification time overlength and cause unnecessary extravagant, and because the operating condition of sterilizer can artificially control, the user can open the disinfection dehumidification according to actual need, it is more convenient to use.

The utility model discloses further set up to: the illumination detection circuit is used for detecting the illumination intensity in the cabinet when the cabinet door is opened so as to output an illumination detection signal, and the logic circuit is connected with the illumination detection circuit and supplies power to the illuminating lamp when the illumination detection signal is higher than an illumination reference signal.

Through adopting above-mentioned technical scheme, when the cabinet door is opened, detect illumination intensity in the cabinet through illumination detection circuitry to supply power for the light when the light is darker in the cabinet, make the lighting lamp can throw light on to the cabinet in, convenient to use person sees clearly the interior tableware of cabinet and takes.

The utility model discloses further set up to: the door lock switch circuit is a double-pole single-throw switch.

The utility model discloses further set up to: the timing circuit comprises a multivibrator circuit based on a 555 time-base chip.

By adopting the technical scheme, the 555 time base chip is low in cost and contributes to saving the circuit cost.

The utility model discloses further set up to: the multi-resonant circuit is connected with a time adjusting circuit used for adjusting the timing duration.

Through adopting above-mentioned technical scheme, adjust through the resistance to time adjustment circuit to can change the interval and detect length of setting for of humidity, the person of facilitating the use sets for length of time according to circumstances such as time of going out and all ring edge borders humidity and adjusts, and the result of use is better.

The utility model discloses further set up to: the comparison circuit is connected with a reference adjusting circuit for adjusting the size of the humidity reference signal.

Through adopting above-mentioned technical scheme, adjust through the resistance to benchmark regulating circuit, and then can adjust humidity reference signal's size, satisfy user's different humidity detection demands.

The utility model discloses further set up to: the logic circuit is an AND gate circuit.

Through adopting above-mentioned technical scheme, satisfy simultaneously that the cabinet door is opened and throw light on for the light power supply under the lower condition of illumination intensity, it is safer.

To sum up, the utility model discloses following beneficial effect has:

after the cabinet door is closed, a timing circuit outputs a primary detection instruction signal at intervals of set time, so that the humidity detection circuit can detect the humidity condition in the cabinet at intervals, and a comparison circuit compares whether the detected humidity detection signal is greater than a humidity reference signal or not, the humidity reference signal corresponds to a humidity reference value for judging that sterilization and disinfection are needed, when the detected humidity is greater than the reference value, the comparison circuit outputs a starting signal, a first switch circuit responds to the starting signal to be switched on, and then supplies power to the disinfection device and the dehumidification device, so that ultraviolet sterilization and disinfection are carried out in the cabinet, and moisture in the cabinet is pumped out by using a fan, the whole process is automatically completed when the humidity is detected to be too high at regular time, the periodic automatic opening is carried out without manual operation, and the defect that the disinfection cabinet is in a humid environment to promote the propagation of harmful bacteria when the disinfection cabinet is not used for a long time is overcome, not only achieves the purpose of disinfection and dehumidification, but also can prolong the service life of the disinfection cabinet and bring convenience to the use.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

fig. 2 is a schematic circuit diagram of the present invention.

Reference numerals: 1. a door lock switch circuit; 2. a timing circuit; 21. a time adjustment circuit; 3. a humidity detection circuit; 4. a comparison circuit; 41. a reference adjusting circuit; 5. a first switching circuit; 6. a dehumidifying device; 7. a sterilizing device; 8. a second switching circuit; 9. a self-locking circuit; 10. an illumination detection circuit; 11. a logic circuit; 12. an illuminating lamp; 13. a power supply circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A self-checking and disinfecting system of a household disinfection cabinet, referring to figure 1, comprises a door lock switch circuit 1 which reflects the opening and closing state of a cabinet door, a timing circuit 2 for outputting a detection instruction signal once every set time when the cabinet door is closed, and a humidity detection circuit 3 for detecting the humidity in the cabinet when the detection instruction signal is received, the humidity detection circuit 3 is electrically connected with a comparison circuit 4 for comparing the detected humidity with the reference humidity, the comparison circuit 4 outputs a start signal when the humidity in the cabinet is greater than the reference humidity, the comparison circuit 4 is coupled with a first switch circuit 5, the first switch circuit 5 is conducted in response to the start signal to supply power to a disinfection device 7 and a dehumidification device 6, the disinfection device 7 and the dehumidification device 6 disinfect and dehumidify the interior of the cabinet, therefore, the automatic dehumidification and disinfection of the inside of the cabinet can be realized at intervals of set time during storage, so as to ensure the cleanness of the inside of the cabinet.

Referring to fig. 1, the automatic disinfection device further comprises a power circuit 13, wherein the power circuit 13 outputs a direct current meeting the working requirement of the self-checking disinfection system after voltage reduction, rectification, filtering and voltage stabilization are carried out on commercial power.

Referring to fig. 1 and 2, the door lock switch circuit 1 includes a double pole single throw switch S1, the double pole single throw switch S1 is disposed on the cabinet door, and the double pole single throw switch S1 includes a first path that is open when the cabinet door is opened and closed when the cabinet door is closed, and a second path that is closed when the cabinet door is opened and open when the cabinet door is closed.

Referring to fig. 1 and 2, the timing circuit 2 includes a 555 time-based chip IC1, an adjustable resistor RP1, a fixed resistor R1, and a capacitor C1, where the adjustable resistor RP1 is a time adjustment circuit 21 for adjusting a timing duration, pins 4 and 8 of the 555 time-based chip IC1 are electrically connected to a first path of the double-pole single-throw switch S1, a pin 7 is electrically connected to the adjustable resistor RP1 in series and then to the first path of the double-pole single-throw switch S1, a pin 2 is connected to a pin 6, a pin 2 is connected to the capacitor C1 in series and then to ground, the pin 2 is connected to the fixed resistor R1 in series and then to the pin 1 and then to the pin 2 in series and then to ground, thereby forming a multi-resonant oscillation circuit, and the pin 3 is used for outputting a stable periodic rectangular wave signal with high and low levels alternating.

Referring to fig. 1 and 2, the humidity detection circuit 3 includes a humidity sensor RS, a transistor VT1 and a fixed resistor R2, wherein a base of the transistor VT1 is electrically connected to pin 3 of the 555 time-based chip IC1, a collector of the transistor VT1 is electrically connected to the humidity sensor RS in series and then to the first path of the double-pole single-throw switch S1, an emitter of the transistor VT1 is electrically connected to the fixed resistor R2 in series and then to ground, when pin 3 of the 555 time-based chip IC1 outputs a high level, the transistor VT1 is turned on, and at this time, the humidity sensor RS starts to detect the humidity in the cabinet to output a humidity detection signal.

Referring to fig. 1 and 2, the comparison circuit 4 includes a homodromous comparator IC2, an adjustable resistor RP2 and a fixed resistor R3, wherein the adjustable resistor RP2 is a reference adjustment circuit 41 for adjusting the magnitude of the humidity reference signal, the homodromous comparator IC2 uses an LM358 chip, a positive input terminal of the homodromous comparator IC2 is connected to a node between an emitter of the transistor VT1 and the fixed resistor R2, a negative input terminal of the homodromous comparator IC2 is respectively connected to one end of the adjustable resistor RP2 and one end of the fixed resistor R3, the other end of the fixed resistor R3 is electrically connected to the first path of the double-pole single-throw switch S1, the other end of the adjustable resistor RP2 is grounded, the homodromous comparator IC2 compares the humidity detection signal with the humidity reference signal, and outputs a high level when the humidity detection signal is higher than the humidity reference signal.

Referring to fig. 1 and 2, the first switch circuit 5 includes a triode VT2, a base of the triode VT2 is electrically connected to an output terminal of the homodromous comparator IC2, a collector of the triode VT2 is electrically connected to a first path of the double-pole single-throw switch S1, an emitter of the triode VT2 is respectively connected to one end of the sterilizing device 7 and one end of the dehumidifying device 6, the other end of the sterilizing device 7 and the other end of the dehumidifying device 6 are both grounded, and when the base of the triode VT2 receives a high level from the output terminal of the homodromous comparator IC2, the triode VT2 is conducted to supply power to the sterilizing device 7 and the dehumidifying device 6, so that the same works.

Referring to fig. 1 and 2, the sterilizing device 7 adopts an ultraviolet lamp, the dehumidifying device 6 is a fan M, the sterilizing device 7 is connected with the dehumidifying device 6 in parallel, the dehumidifying device 6 is connected with a freewheeling diode VD in parallel, the anode of the freewheeling diode VD is grounded, and the cathode of the freewheeling diode VD is connected with the emitter of a triode VT 2.

Referring to fig. 1 and 2, the automatic sterilizer further comprises a second switch circuit 8 and a self-locking circuit 9, the second switch circuit 8 is switched on when being triggered manually to supply power to the sterilizing device 7 and the dehumidifying device 6, and the self-locking circuit 9 maintains the preset time length working state of the sterilizing device 7 and the dehumidifying device 6 after the second switch circuit 8 is switched on.

Referring to fig. 1 and 2, the second switch circuit 8 is a self-reset button S2, one end of the self-reset button S2 is electrically connected to the input terminal of the power circuit 13 through the second path of the double-pole single-throw switch S1, and the other end of the self-reset button S2 is electrically connected to the input terminal of the parallel connection of the disinfection device 7 and the dehumidification device 6.

Referring to fig. 1 and 2, the self-locking circuit 9 includes a time relay KT of an electrified delay type, the time relay KT is connected to a node between a self-reset button S2 and the sterilizing device 7, and a normally open contact KT-1 of the time relay KT is connected in parallel with a self-reset button S2, under the condition that a cabinet door is closed, the self-reset button S2 is pressed to enable the time relay KT, the sterilizing device 7 and the dehumidifying device 6 to be powered on and operated, the self-reset button S2 is reset, the normally open contact KT-1 is closed to realize self-locking when the time relay KT is powered on and timed, the normally open contact KT-1 is reset after the timing reaches a set value, and the sterilizing device 7 and the dehumidifying device 6 are powered off and stop working.

Referring to fig. 1 and 2, the cabinet illumination detection device further includes an illumination detection circuit 10 and a logic circuit 11, the illumination detection circuit 10 is configured to detect an illumination intensity in the cabinet when the cabinet door is opened to output an illumination detection signal, and the logic circuit 11 is connected to the illumination detection circuit 10 and supplies power to the illumination lamp 12 when the illumination detection signal is higher than the illumination reference signal.

Referring to fig. 1 and 2, the illumination detection circuit 10 includes a negative-correlation photo-resistor RG, a transistor VT3, a fixed resistor R4, and a fixed resistor R5, a base of the transistor VT3 is connected in series with the fixed resistor R4 and then connected to the second path of the double-pole single-throw switch S1, a collector of the transistor VT3 is connected in series with the fixed resistor R5 and then connected to the output terminal of the power circuit 13, an emitter of the transistor VT3 is connected in series with the photo-resistor RG and then grounded, when the cabinet door is opened, the second path of the double-pole single-throw switch S1 is closed, the transistor VT3 is turned on, and the illumination intensity in the cabinet is detected to output an illumination detection signal.

Referring to fig. 1 and 2, the logic circuit 11 is an and circuit, two input terminals of the and circuit are respectively connected to the second path of the double-pole single-throw switch S1 and a node between an emitter of the transistor VT3 and the photo resistor RG, when the cabinet door is opened, an input terminal connected to the second path of the and circuit and the double-pole single-throw switch S1 is at a high level, and when light is dark, that is, when the other input terminal of the and circuit also receives the high level, the and circuit is turned on to supply power to the illumination lamp 12, so as to implement illumination.

The working principle is as follows:

when the cabinet door is in a closed state, the first path of the double-pole single-throw switch S1 is closed, the multivibrator circuit outputs stable periodic rectangular wave signals with high and low levels alternated, the base electrode of the triode VT1 is conducted when receiving the high level, so that the humidity sensor RS starts to detect the humidity condition in the cabinet, the detected humidity condition is converted into a voltage signal and outputs a humidity detection signal to the positive input end of the comparator IC2, the humidity detection signal is compared with a reference humidity signal of the negative input end of the homodromous comparator IC2, when the humidity detection signal is higher than the humidity reference signal, the output end of the homodromous comparator IC2 outputs the high level to conduct the triode VT2, so that the disinfection device 7 and the dehumidification device 6 are electrically operated, the ultraviolet sterilization and disinfection are carried out in the cabinet, the moisture in the cabinet is pumped out, when the multivibrator circuit outputs the low level, the triode VT1 is in a cut-off state, the disinfection device 7 and the dehumidification device 6 do not work, the periodical automatic opening is realized, the manual operation is not needed, the defect that the disinfection cabinet is in a humid environment when not used for a long time to promote the propagation of harmful bacteria is overcome, the purposes of disinfection and dehumidification are achieved, the service life of the disinfection cabinet can be prolonged, and the convenience is brought to the use; under this condition, if when the user need disinfect the tableware temporarily, can press from reset button S2, and then make time relay KT, degassing unit 7 and dehydrating unit 6 get electric work, reset from reset button S2, and normally open contact KT-1 is closed when time relay KT gets electric timing and realizes the auto-lock, normally open contact KT-1 resets after the timing reaches the setting value, degassing unit 7 and dehydrating unit 6 stop work, satisfy user' S multiple demand.

When the cabinet door is in the open mode, double-pole single-throw switch S1 ' S second way is closed, double-pole single-throw switch S1 ' S the disconnection of the first way, multivibrator circuit loses the electricity stop work and resets this moment, and photo resistor RG senses illumination intensity in the cabinet and carries out the resistance change, illumination intensity in the cabinet is lower, photo resistor RG ' S resistance is big more, when two high levels are received to two input of AND gate, output high level, make light 12 electric work throw light on, illuminate the internal environment of cabinet, the person of facilitating the use takes and puts the tableware.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A self-test disinfection system for a household disinfection cabinet, comprising:

the door lock switching circuit (1) is used for outputting a trigger signal when the cabinet door is closed;

the timing circuit (2) is connected with the door lock switch circuit (1) and responds to the trigger signal and outputs a detection instruction signal once at intervals of set time;

the humidity detection circuit (3) is connected with the timing circuit (2) and is used for detecting the humidity in the current cabinet to output a corresponding humidity detection signal after receiving the detection instruction signal;

the comparison circuit (4) is connected with the humidity detection circuit (3) and outputs a starting signal when the humidity detection signal is higher than the humidity reference signal;

and the first switching circuit (5) is connected with the comparison circuit (4) and is conducted in response to the starting signal so as to supply power to the disinfection device (7) and the dehumidification device (6) for working.

2. A self-test disinfection system for household disinfection cabinets according to claim 1, further comprising a second switch circuit (8) that is switched on upon manual activation to supply power to the disinfection device (7) and the dehumidification device (6), and a self-locking circuit (9) that maintains the disinfection device (7) and the dehumidification device (6) in operation for a preset duration after the second switch circuit (8) is switched on.

3. A self-test disinfection system for household disinfection cabinets according to claim 1, further comprising a light detection circuit (10) for detecting the intensity of light inside the cabinet when the cabinet door is opened to output a light detection signal, and a logic circuit (11) connected to the light detection circuit (10) and powering the illumination lamp (12) when the light detection signal is higher than the light reference signal.

4. A self-test disinfection system for household disinfection cabinets according to claim 1, characterized in that said door lock switch circuit (1) is a double pole single throw switch.

5. A household disinfection cabinet self-test disinfection system as claimed in claim 1, characterized in that said timing circuit (2) comprises a multivibrator circuit based on a 555 time base chip.

6. A self-testing disinfection system for household disinfection cabinets according to claim 5, characterized in that a time adjusting circuit (21) for adjusting the timing duration is connected to said multivibrator circuit.

7. A self-test disinfection system for household disinfection cabinets according to claim 1, characterized in that said comparison circuit (4) is connected to a reference regulation circuit (41) for regulating the magnitude of a humidity reference signal.

8. A self-test disinfection system for household disinfection cabinets according to claim 3, characterized in that said logic circuit (11) is an and gate circuit.

Images