CN104279837A - Power restoration time delay contactless protection device for electric refrigerator - Google Patents
Power restoration time delay contactless protection device for electric refrigerator Download PDFInfo
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- CN104279837A CN104279837A CN201410608909.5A CN201410608909A CN104279837A CN 104279837 A CN104279837 A CN 104279837A CN 201410608909 A CN201410608909 A CN 201410608909A CN 104279837 A CN104279837 A CN 104279837A
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- 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
- F25D29/005—Mounting of control devices
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a power restoration time delay contactless protection device for an electric refrigerator. The power restoration time delay contactless protection device is characterized by comprising a 220V alternating current power supply, a resistive and capacitive voltage drop and full bridge rectification circuit, a 12V voltage stabilizing power supply and filtering circuit, a monostable time delay circuit and a state indicating and electric refrigerator control circuit, wherein the monostable time delay circuit consists of a time base circuit IC1, an electrolytic capacitor C3, a linear potentiometer RP and a resistor R2; the time base circuit IC1 adopts NE555; the state indicating and electric refrigerator control circuit consists of a resistor R3, a light emitting diode LED and a BCR bidirectional controllable silicon and electric refrigerator power supply socket CZ; and the resistive and capacitive voltage drop and full bridge rectification circuit consists of a voltage drop capacitor C1, a discharging resistor R1 and a full bridge rectification element QZ. Once power fails or is interrupted and then is restored again during normal running of an electric refrigerator, a motor is easily burned out due to blocked operation of a compressor, and the power restoration time delay contactless protection device is designed for solving the actual problem.
Description
Technical field
The invention belongs to technical field of electronic control, relate to a kind of refrigerator incoming call time delay contactless protector.
Background technology
After compressor for refrigeration quits work suddenly, because the air pressure in compressor is higher, if energising starts again at once, compressor start can be very difficult, and starting current is very large, is easy to burn compressor, although the less appearance of this situation.Refrigerator, in normal operation, once send a telegram here suddenly again after there is 220V AC outage or power-off, starts compressor in this case by force, is easy to occur to burn out motor because of compressor stall.Refrigerator incoming call time delay contactless protector described in invention designs and produces to solve this practical problem.
Refrigerator incoming call time delay contactless protector described in this invention, instead of relay with bidirectional triode thyristor, has stopped the phenomenon of relay contact sparking, and circuit has that components and parts are few, cost is low, without the need to features such as debugging.
Below describe the core technology content that refrigerator of the present invention incoming call time delay contactless protector is involved in manufacturing process in detail.
Summary of the invention
Goal of the invention and beneficial effect: after compressor for refrigeration quits work suddenly, because the air pressure in compressor is higher, if energising starts again at once, compressor start can be very difficult, and electric current is very large, is easy to burn compressor, although the less appearance of this situation.Refrigerator, in normal operation, once send a telegram here suddenly again after there is 220V AC outage or power-off, starts compressor in this case by force, is easy to occur to burn out motor because of compressor stall.Refrigerator incoming call time delay contactless protector of the present invention designs and produces to solve this practical problem.
Circuit working principle: a monostable time delay circuit of refrigerator incoming call time delay contactless protector in fact used time base circuit production.When 12V voltage-stabilized power supply adds to delay circuit, at this moment the 2nd pin of time base circuit IC1 and the 6th pin are high level, then the 3rd pin of time base circuit IC1 exports as low level, and thus bidirectional triode thyristor BCR is in cut-off state.Then 12V voltage-stabilized power supply is by electrochemical capacitor C3, linear potentiometer RP, resistance R2 is to circuit ground, electrochemical capacitor C3 is charged, along with the voltage on electrochemical capacitor C3 raises, 2nd pin of time base circuit IC1 and the voltage of the 6th pin decline gradually, when 2nd pin of base IC circuit 1 and the voltage drop of the 6th pin are to 12V voltage-stabilized power supply voltage 2/3 at that time, it is high level that the 3rd pin output of time base circuit IC1 is overturn by low level, at this moment while high level lights LED, bidirectional triode thyristor BCR conducting is also started working, powered to refrigerator by supply socket CZ, can effectively avoid like this because of compressor for refrigeration pressure do not reach balance time, suddenly send a telegram here again after civil power power-off, in this case compressor cannot start by force without electricity, stop compressor and burn out motor because of stall.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment circuit working schematic diagram that the invention provides a refrigerator incoming call time delay contactless protector.
Detailed description of the invention
According to the refrigerator incoming call time delay contactless protector circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation; and according to annexation between components and parts in each several part circuit described in summary of the invention; and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
Technical characteristic: refrigerator incoming call time delay contactless protector, it comprises 220V AC power, resistance-capacitance depressurization and full bridge rectifier, 12V voltage-stabilized power supply and filter circuit, monostable time delay circuit, state instruction and refrigerator control circuit, it is characterized in that:
Monostable time delay circuit: it is by time base circuit IC1, electrochemical capacitor C3, linear potentiometer RP, resistance R2 forms, the model that time base circuit IC1 selects is NE555, time base circuit IC1 the 2nd pin and the 6th pin connect the negative pole of electrochemical capacitor C3, linear potentiometer RP one end and movable end thereof, linear potentiometer RP other end connecting resistance R2 one end, the resistance R2 other end and time base circuit IC1 the 1st pin connection circuit ground GND, electrochemical capacitor C3 positive pole connection circuit positive pole VCC, time base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, time base circuit IC1 the 3rd pin connects state instruction and refrigerator control circuit,
State instruction and refrigerator control circuit: it is made up of resistance R3 and LED, BCR bidirectional triode thyristor and refrigerator power socket CZ, time base circuit IC1 the 3rd pin connects the positive pole of LED by resistance R3, the negative pole of LED meets the control pole G of BCR bidirectional triode thyristor, the first anode T1 of BCR bidirectional triode thyristor meets the zero line side N of 220V AC power by refrigerator power socket CZ, silicon controlled second plate T2 meets the live wire end L of 220V AC power;
Resistance-capacitance depressurization and full bridge rectifier: it is made up of decompression capacitor C1, bleeder resistance R1 and full-bridge rectification element QZ, the live wire end L of decompression capacitor C1 one end and bleeder resistance R1 mono-termination 220V AC power, the zero line side N of the decompression capacitor C1 other end and the bleeder resistance R1 other end, 220V AC power connects the input of full-bridge rectification element QZ alternating current respectively;
12V voltage-stabilized power supply and filter circuit: full bridge rectifier cathode output end meets the negative pole of Zener diode DW and the positive pole of electrochemical capacitor C2 and circuit anode VCC, full bridge rectifier cathode output end meets the positive pole of Zener diode DW and the negative pole of electrochemical capacitor C2 and circuit ground GND.
The technical parameter of components and parts and selection requirement
IC1 is time base circuit, and the model selected is NE555 or selects KA555; Time base circuit IC1 is that 8 pin dual inline type DIP encapsulate, each pin function respectively: the 1st pin be circuit ground GND; 2nd pin is trigger end; 3rd pin output; 4th pin preset end; 5th pin is control voltage; 6th pin thresholding (threshold value); 7th pin is discharge end; 8th pin connection circuit positive pole VCC;
QZ full-bridge rectification element, technical parameter is 1A/600V, plastic packaging, or uses 4 1N4007 silicon rectifier diodes to be connected into full bridge rectifier;
DW is Zener diode, and technical parameter is 12V/1W, can use domestic model 2CW19;
The resistance of bleeder resistance R1 is 680K Ω, requires power >=1W; The resistance of resistance R2 is 470K Ω; The resistance of resistance R3 is 1K Ω;
RP is linear potentiometer, and its resistance is 1.2M Ω;
The capacity of decompression capacitor C1 is 0.68 μ F, withstand voltage >=400V; Electrochemical capacitor C2 is filter capacitor, and its capacity is 470 μ F/25V; Electrochemical capacitor C3 is timing capacitor, and its capacity is 220 μ F/25V;
LED is light emitting diode, adopts the common red light emitting diodes of ￠ 5mm;
BCR bidirectional triode thyristor, requires that technical parameter is 15A/400V;
CZ is refrigerator power socket, and technical parameter is 15A/250V.
Circuit production main points and circuit debugging
Because the circuit structure of refrigerator incoming call time delay contactless protector is fairly simple, comparison is easy, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present invention does not substantially need to carry out debugging and can normally work;
The delay time of circuit is determined by the value of electrochemical capacitor C3, linear potentiometer RP and resistance R2, that is: T ≈ 1.1 × C3 (RP+R2); According to the needs of refrigerator, the capacity of electrochemical capacitor C3 can be selected within the scope of 100 μ F to 1000 μ F, and resistance R2 is 470K Ω, and the maximum of potentiometer RP is 1.2M Ω; According to the technical parameter of said elements, the delay time of circuit is approximately 2 ~ 10 minutes;
In debugging, if find long-time unlimited time delay, monostable circuit can not overturn, and first should check whether electrochemical capacitor C3 exists leaky; Next checks that whether the resistance of linear potentiometer RP is too large, if the circuit operation time need be extended, should be first-selected to increase the capacity of electrochemical capacitor C3, and be conducive to the adverse effect that circuit delay reliability is produced of self leaking electricity offsetting electrochemical capacitor C3 like this;
Not key technology of the present invention as the outward appearance of the circuit components layout of refrigerator incoming call time delay contactless protector, board design, device and size etc.; neither the technology contents of application claims protection, therefore to illustrate no longer one by one in the description.
Claims (1)
1. a refrigerator incoming call time delay contactless protector, it comprises 220V AC power, resistance-capacitance depressurization and full bridge rectifier, 12V voltage-stabilized power supply and filter circuit, monostable time delay circuit, state instruction and refrigerator control circuit, it is characterized in that:
Described monostable time delay circuit is by time base circuit IC1, electrochemical capacitor C3, linear potentiometer RP, resistance R2 forms, the model that time base circuit IC1 selects is NE555, time base circuit IC1 the 2nd pin and the 6th pin connect the negative pole of electrochemical capacitor C3, linear potentiometer RP one end and movable end thereof, linear potentiometer RP other end connecting resistance R2 one end, the resistance R2 other end and time base circuit IC1 the 1st pin connection circuit ground GND, electrochemical capacitor C3 positive pole connection circuit positive pole VCC, time base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, time base circuit IC1 the 3rd pin connects state instruction and refrigerator control circuit,
Described state instruction and refrigerator control circuit are made up of resistance R3 and LED, BCR bidirectional triode thyristor and refrigerator power socket CZ, time base circuit IC1 the 3rd pin connects the positive pole of LED by resistance R3, the negative pole of LED meets the control pole G of BCR bidirectional triode thyristor, the first anode T1 of BCR bidirectional triode thyristor meets the zero line side N of 220V AC power by refrigerator power socket CZ, silicon controlled second plate T2 meets the live wire end L of 220V AC power;
Described resistance-capacitance depressurization and full bridge rectifier are made up of decompression capacitor C1, bleeder resistance R1 and full-bridge rectification element QZ, the live wire end L of decompression capacitor C1 one end and bleeder resistance R1 mono-termination 220V AC power, the zero line side N of the decompression capacitor C1 other end and the bleeder resistance R1 other end, 220V AC power connects the input of full-bridge rectification element QZ alternating current respectively;
In described 12V voltage-stabilized power supply and filter circuit, full bridge rectifier cathode output end meets the negative pole of Zener diode DW and the positive pole of electrochemical capacitor C2 and circuit anode VCC, and full bridge rectifier cathode output end meets the positive pole of Zener diode DW and the negative pole of electrochemical capacitor C2 and circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608909.5A CN104279837B (en) | 2014-10-31 | 2014-10-31 | Electric refrigerator incoming call time delay contactless protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608909.5A CN104279837B (en) | 2014-10-31 | 2014-10-31 | Electric refrigerator incoming call time delay contactless protector |
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| CN104279837A true CN104279837A (en) | 2015-01-14 |
| CN104279837B CN104279837B (en) | 2016-11-30 |
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| CN201410608909.5A Active CN104279837B (en) | 2014-10-31 | 2014-10-31 | Electric refrigerator incoming call time delay contactless protector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983657A (en) * | 2018-07-06 | 2018-12-11 | 黄月华 | Electric mosquito repellent adjustable timing power-supply controller of electric |
| CN109979166A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator doors forget shutdown delay pattern alarm device |
Citations (5)
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|---|---|---|---|---|
| CN1384327A (en) * | 2001-05-09 | 2002-12-11 | 海尔集团公司 | Phonetically door-opening refrigerator |
| CN1385660A (en) * | 2001-05-16 | 2002-12-18 | 广东科龙电器股份有限公司 | Refrigerator capable of regulation refrigeration quantity between refrigeration chamber and freezer |
| CN2527939Y (en) * | 2002-02-26 | 2002-12-25 | 济南英特制冷有限公司 | Remote monitor device for refrigeration equipment |
| KR100364530B1 (en) * | 1994-12-31 | 2003-03-06 | 엘지전자 주식회사 | Refrigerator |
| CN204100703U (en) * | 2014-10-31 | 2015-01-14 | 王志 | Refrigerator incoming call time delay contactless protector |
-
2014
- 2014-10-31 CN CN201410608909.5A patent/CN104279837B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100364530B1 (en) * | 1994-12-31 | 2003-03-06 | 엘지전자 주식회사 | Refrigerator |
| CN1384327A (en) * | 2001-05-09 | 2002-12-11 | 海尔集团公司 | Phonetically door-opening refrigerator |
| CN1385660A (en) * | 2001-05-16 | 2002-12-18 | 广东科龙电器股份有限公司 | Refrigerator capable of regulation refrigeration quantity between refrigeration chamber and freezer |
| CN2527939Y (en) * | 2002-02-26 | 2002-12-25 | 济南英特制冷有限公司 | Remote monitor device for refrigeration equipment |
| CN204100703U (en) * | 2014-10-31 | 2015-01-14 | 王志 | Refrigerator incoming call time delay contactless protector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983657A (en) * | 2018-07-06 | 2018-12-11 | 黄月华 | Electric mosquito repellent adjustable timing power-supply controller of electric |
| CN109979166A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator doors forget shutdown delay pattern alarm device |
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| Publication number | Publication date |
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| CN104279837B (en) | 2016-11-30 |
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Inventor after: Li Qingdi Inventor before: Wang Zhi |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161027 Address after: 401344 Chongqing city Banan District of the town of Huai village Solitaire force Zi Wan Group No. 1043 Applicant after: Li Qingdi Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20161027 Address after: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 233000 Anhui Province, Bengbu City Economic Development Zone West School Gold Garden Building 6 Unit Four Applicant before: Wang Zhi |
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Effective date of registration: 20190417 Address after: 226100 No. 18 Coastal Avenue, Baochang Town, Haimen City, Nantong City, Jiangsu Province Patentee after: Jiangsu Guangzhong Electronic Technology Co.,Ltd. Address before: 401344 No. 1043, Li Zi Wan Group, new Huai village, Banan, Chongqing Patentee before: Li Qingdi |
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