CN110470100A - The reliable alarm set of refrigerator enabling - Google Patents
The reliable alarm set of refrigerator enabling Download PDFInfo
- Publication number
- CN110470100A CN110470100A CN201910812171.7A CN201910812171A CN110470100A CN 110470100 A CN110470100 A CN 110470100A CN 201910812171 A CN201910812171 A CN 201910812171A CN 110470100 A CN110470100 A CN 110470100A
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- China
- Prior art keywords
- circuit
- refrigerator
- door
- anode
- cathode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a kind of reliable alarm set of refrigerator enabling, feature includes 12V DC power supply, gate controlled switch and potential balance circuit, delay circuit, unbalanced signal amplifying circuit, one-way SCR triggering and its control circuit.It makes using only a small amount of discrete electronic component, realizes refrigerator opening after door tens seconds, user can be reminded to close door of refrigerator in time by voice mode.It is opened for a long time the present invention be directed to certain door of refrigerator or a kind of reliable alarm set that door of refrigerator is not shut.After installing and using the present invention, as long as the time for opening door of refrigerator is more than 35 seconds, the refrigerator buzzer in reliable alarm set that opens the door will pipe and not stop, substantially phenomena such as having prevented the problems such as food refrigerated in refrigerator causes food to thaw or go bad because of long-time enabling, and having caused power wastage due to compressor is in operating condition for a long time.
Description
Technical field
It is the reliable alarm set that opens the door about a kind of refrigerator the invention belongs to technical field of electronic control.
Background technique
There is part refrigerator not design installation in the market and forget shutdown or long-time door open prompting apparatus, when refrigerator is deposited
After taking food, once forgetting to shut door of refrigerator in time, electric power is gently then wasted, the food refrigerated in refrigerator is made to thaw or become
Matter；Heavy then loss and the service life for influencing compressor；Refrigerator of the present invention opens the door reliable alarm set using only a small amount of point
Vertical fabrication of electronic components realizes refrigerator opening after door tens seconds, user can be reminded to close in time by voice mode
Door of refrigerator.It is opened for a long time the present invention be directed to certain door of refrigerator or door of refrigerator is not shut that one kind is reliable reminds dress
It sets.
After installing and using the present invention, as long as the time for opening door of refrigerator is more than 35 seconds, refrigerator, which opens the door, reliably reminds dress
Set middle buzzer and will pipe and do not stop, prevented substantially the food refrigerated in refrigerator because long-time open the door cause food thaw or
The problems such as rotten, and phenomena such as cause power wastage due to compressor is in operating condition for a long time.
The reliable alarm set phase involved in implementation process of refrigerator enabling of the present invention described further below
Close technology contents.
Summary of the invention
Goal of the invention and a small amount of discrete electric is used only in reliable alarm set the utility model has the advantages that refrigerator of the present invention opens the door
Subcomponent production realizes refrigerator opening after door tens seconds, user can be reminded to close electric ice in time by voice mode
Chamber door.It is opened for a long time the present invention be directed to certain door of refrigerator or a kind of reliable alarm set that door of refrigerator is not shut.
After installing and using the present invention, as long as the time for opening refrigerator doors is more than 35 seconds, buzzer in the reliable alarm set of refrigerator enabling
It will pipe and not stop, prevent the food refrigerated in refrigerator substantially and open the door because of long-time that food is caused to thaw or rotten etc. ask
Phenomena such as inscribing, and causing power wastage due to compressor is in operating condition for a long time.
Circuit operation principle: when closed button switch AN1 is connected in the reliable alarm set circuit of refrigerator enabling, 12V
DC power supply is added on circuit, and circuit is activated at this time, is in standby.
When door of refrigerator normal switching-off, the gate key switch AN2~AN3 being one another in series is in closed state, 12V
DC power supply is all added in the both ends of resistance R1, ends silicon rectifier diode D2.Therefore, the effect of resistance R1 is to prevent NPN
Transistor npn npn VT1 conducting, alarm set is in standby in the meantime.When you open door of refrigerator, key switch is gated
AN2~AN3 goes off state at once, and after electrolytic capacitor C1 charging delay about 35 seconds, NPN transistor VT1 is led circuit
It is logical, so that triggering unidirectional controllable silicon S CR is connected and buzzer HA is driven to pipe, urges this moment and you is reminded to close refrigerator as early as possible
Door.Even if at this moment having shut door of refrigerator, unidirectional controllable silicon S CR still can maintain to be connected, and buzzer HA can ceaselessly ring
It cries.
Make alarm set circuit reset, closed button switch AN1 can be turned off once, when alarm set circuit is cut off
When DC power supply is powered, buzzer HA will stop piping, and alarm set reenters standby mode at once.
Technical characteristic: the reliable alarm set of refrigerator enabling includes 12V DC power supply, gate controlled switch and potential balance electricity
Road, delay circuit, unbalanced signal amplifying circuit, one-way SCR triggering and its control circuit, it is characterised in that:
Gate controlled switch and potential balance circuit: it is whole by gate key switch AN2~AN3 and silicon rectifier diode D1, silicon
Diode D2 and resistance R1 composition is flowed, the anode of silicon rectifier diode D1 connects one end of gate key switch AN3, and gate key is opened
It is connected after closing the other end concatenation gate key switch AN2 of AN3 with circuit anode VCC, the cathode of silicon rectifier diode D1 connects silicon
The cathode of rectifier diode D2 and one end of resistance R1, another termination circuit of resistance R1 ground GND；
Delay circuit: it is made of electrolytic capacitor C1 and resistance R2, and the emitter of NPN transistor VT1 connects electrolytic capacitor
Another termination circuit of the anode of C1 and one end of resistance R2, the cathode of electrolytic capacitor C1 and resistance R2 ground GND；
Current potential is unbalance amplifying circuit: the anode of silicon rectifier diode D2 connects the base stage of NPN transistor VT1, NPN type crystal
The collector of pipe VT1 meets circuit anode VCC, and the emitter of NPN transistor VT1 connects the anode of silicon rectifier diode D3；
One-way SCR triggering and its control circuit: after the control electrode series resistor R3 of unidirectional controllable silicon S CR with silicon rectifier
The cathode of diode D3 connects, and the anode of unidirectional controllable silicon S CR meets circuit anode VCC, and the cathode of unidirectional controllable silicon S CR connects buzzing
The anode of device HA, the cathode of buzzer HA with connecing circuit GND；
The anode of 12V DC power supply meets circuit anode VCC, the cathode of 12V DC power supply with connecing circuit GND.
Detailed description of the invention
Attached drawing 1 is the embodiment circuit fundamental diagram that the present invention provides that a refrigerator opens the door reliable alarm set.
Specific embodiment
It opens the door reliable alarm set circuit fundamental diagram and Detailed description of the invention according to attached refrigerator shown in FIG. 1, and according to
The ginseng of component technology described in connection relationship and embodiment between component in each section circuit described in summary of the invention
Number requires and circuit production main points carry out implementing that the present invention can be realized, and makees with reference to embodiments to the relevant technologies of the invention
Further description.
The technical parameter of component and its selection require
VT1 is NPN transistor, the model BC557 of selection, or selection 2SC9013；
D1~D3 is silicon rectifier diode, the model 1N4001 of selection；
SCR is one-way SCR, the model BT169 of selection；
Resistance uses RTX-1/4W type metalfilmresistor, and the resistance value of resistance R1 is 100K Ω；The resistance value of resistance R2 is
1.0MΩ；The resistance value of resistance R3 is 18K Ω；
C1 is electrolytic capacitor, and model CD11-25V type, capacity is 680 μ of μ F~820 F；
AN1 is closed button switch, is selected monopole key switch (that is: normally-closed contact)；
AN2~AN3 is gate key switch, is selected monopole key switch (that is: normally opened contact)；
HA is buzzer, and inside is equipped with the micro buzzer-phone of 2Hz audio oscillator circuit, operating voltage 12V.
Circuit production main points and circuit debugging
Because refrigerator open the door reliable alarm set circuit structure it is fairly simple, comparison be easy, under normal circumstances only
The electronic component performance to be selected is intact, and the component connection relationship in attached drawing 1 is welded to specifications, and physics connects
Wiring and welding quality through going through it is correct after, circuit of the present invention does not need to carry out debugging substantially can normal work
Make；
It is required that the gate hidden installation of key switch AN2~AN3, and require the reliable in action of gate key switch.If user
Feel that the delay time of circuit is improper, it can be with the resistance value of the capacity of appropriate adjustment electrolytic capacitor C1 or increase resistance R2.If sense
Feel that the sound of buzzer HA at work is not big enough, can suitably reduce the resistance value of resistance R3.
Circuit structure design of the invention, components' placement and its structure feature, face shaping and size etc.
It is not key technology of the invention, nor claimed key technique content, because not influencing tool of the present invention
The realization of body implementation process and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
- The reliable alarm set 1. a kind of refrigerator opens the door, it includes 12V DC power supply, gate controlled switch and potential balance circuit, prolongs When circuit, unbalanced signal amplifying circuit, one-way SCR triggering and its control circuit, it is characterised in that:The gate controlled switch and potential balance circuit is by gate key switch AN2~AN3 and silicon rectifier diode D1, silicon rectifier Diode D2 and resistance R1 composition, the anode of silicon rectifier diode D1 connect one end of gate key switch AN3, gate key switch It is connected after the other end concatenation gate key switch AN2 of AN3 with circuit anode VCC, it is whole that the cathode of silicon rectifier diode D1 connects silicon Flow the cathode of diode D2 and one end of resistance R1, another termination circuit of resistance R1 ground GND；The delay circuit is made of electrolytic capacitor C1 and resistance R2, and the emitter of NPN transistor VT1 meets electrolytic capacitor C1 Anode and resistance R2 one end, another termination circuit of the cathode of electrolytic capacitor C1 and resistance R2 ground GND；In the current potential is unbalance amplifying circuit, the anode of silicon rectifier diode D2 connects the base stage of NPN transistor VT1, NPN type The collector of transistor VT1 meets circuit anode VCC, and the emitter of NPN transistor VT1 connects the anode of silicon rectifier diode D3；In the described one-way SCR triggering and its control circuit, after the control electrode series resistor R3 of unidirectional controllable silicon S CR with silicon The cathode of rectifier diode D3 connects, and the anode of unidirectional controllable silicon S CR meets circuit anode VCC, and the cathode of unidirectional controllable silicon S CR connects The anode of buzzer HA, the cathode of buzzer HA with connecing circuit GND；The 12V DC positive pole meets circuit anode VCC, 12V DC power cathode with connecing circuit GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812171.7A CN110470100A (en) | 2019-08-30 | 2019-08-30 | The reliable alarm set of refrigerator enabling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812171.7A CN110470100A (en) | 2019-08-30 | 2019-08-30 | The reliable alarm set of refrigerator enabling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110470100A true CN110470100A (en) | 2019-11-19 |
Family
ID=68514279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910812171.7A Withdrawn CN110470100A (en) | 2019-08-30 | 2019-08-30 | The reliable alarm set of refrigerator enabling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110470100A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737848A (en) * | 1971-06-18 | 1973-06-05 | Trw Inc | Vehicle transistorized warning circuit |
| CN201981862U (en) * | 2011-03-23 | 2011-09-21 | 刘昭利 | Automobile multi-door combination control anti-theft device |
| CN102442247A (en) * | 2011-12-13 | 2012-05-09 | 刘德军 | Automobile gated warning device |
| CN109979423A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator shutdown buzzing reminiscences |
| CN109974391A (en) * | 2019-03-30 | 2019-07-05 | 周芸 | Closing door of refrigerator acousto-optic delay alarm set |
-
2019
- 2019-08-30 CN CN201910812171.7A patent/CN110470100A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737848A (en) * | 1971-06-18 | 1973-06-05 | Trw Inc | Vehicle transistorized warning circuit |
| CN201981862U (en) * | 2011-03-23 | 2011-09-21 | 刘昭利 | Automobile multi-door combination control anti-theft device |
| CN102442247A (en) * | 2011-12-13 | 2012-05-09 | 刘德军 | Automobile gated warning device |
| CN109979423A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator shutdown buzzing reminiscences |
| CN109974391A (en) * | 2019-03-30 | 2019-07-05 | 周芸 | Closing door of refrigerator acousto-optic delay alarm set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191119 |