CN2087393U - Six-function voltage-stabilizing protector for refrigerator - Google Patents
Six-function voltage-stabilizing protector for refrigerator Download PDFInfo
- Publication number
- CN2087393U CN2087393U CN 90223071 CN90223071U CN2087393U CN 2087393 U CN2087393 U CN 2087393U CN 90223071 CN90223071 CN 90223071 CN 90223071 U CN90223071 U CN 90223071U CN 2087393 U CN2087393 U CN 2087393U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- relay
- protection
- stabilizing
- Prior art date
- 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.)
- Withdrawn
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a voltage-stabilizing protector, having six functions of automatic voltage regulation, automatic overvoltage protection, automatic undervoltage protection, automatic timed guard, self-protection and simulated malfunction detection, comprising three international universal integrated circuits, the peripheral elements of the international universal integrated circuits, a relay logical working control circuit, and an autotransformer. The feedback type signal is adopted to sample electric circuit, a relay is adopted to rapidly contact electric circuit, and the reaction sensitivity of the electric circuit working is enhanced. The simulated malfunction detecting circuit has simple structure, achieving the self detection of the protection circuit, having visual effect, making up for the defect of the prior art, increasing reliability, applying to the security protection of the household appliances such as refrigerators, air conditioners, etc. in the regions where have serious voltage fluctuation and power failure.
Description
The utility model belongs to the electrical equipment automation field, relates to a kind of high-performance refrigerator voltage-stabilizing protection device, particularly self-protection function, and simulated failure measuring ability, relay touch circuit fast; Be suitable for the serious zone that often has a power failure again of voltage fluctuation.Protection refrigerator and other household electrical appliance safety.
The voltage-stabilizing protection device of autotransformer tap mode work is switched in existing employing control relay contact; the switching of its relay contact is by certain logic working; when control unit breaks down; logical action promptly gets muddled; voltage-stabilizing protection device output voltage is just out of hand, and the appearance step-down that this boosts is boosted in the appearance of this step-down when serious; as described in multiple functional AC voltage regulator one literary composition of " radio " o. 11th in 1989, its relay J
1, J
2Out of controlly will cause this machine to exchange output overvoltage or under-voltage, pressurizer can only or under-voltagely providing protection to the overvoltage of electrical network, and the overvoltage that fault own is caused or under-voltage powerless.
It is the off-position switched in the relay contact logic of design that the voltage-stabilizing protection device that has exchanges the output switch, as China's utility model on March 22nd, 1989, notification number: CN2034754U accompanying drawing repeat circuit J
2Stop J
3Moving logic state after the relay logic relation gets muddled, except above-mentioned situation takes place, protective circuit is in closure state and can't cuts off the electricity supply because of exporting switch, can not shield, this just brings hidden danger to electrical appliance.
Existing protector just often uses at input voltage as " radio " multiple functional AC voltage regulator of o. 11th in 1989; all can't check this organizational security protective function; can know just when can only wait for overvoltage or under-voltage needing protection whether defencive function is normal; in case defencive function lost efficacy and just to lead to a disaster, this is a defective of the protector reliability of working under the long-term unsupervised.
Known; switch the voltage-stabilizing protection device of autotransformer tap mode work with relay contact; as practical novel C N2G34754U; exist instantaneous power failure phenomenon in the handoff procedure of contact; the instantaneous power failure time is resolute degree when depending on the actuating of relay; the instantaneous power failure time is long, and the television set flicker in the work is serious, and the refrigerator in the work has increased restarts electric current.
Therefore, the voltage-stabilizing protection device of relay contact switch operating, because efficient height, good output waveform, cost are low when generally being adopted, itself reliability and self-protection function seem very important.
The purpose of this utility model is that design a kind ofly can be stablized line voltage within the specific limits; have simultaneously overvoltage, under-voltage protection function, self-protection function, simulated failure measuring ability and the time-delay that has a power failure again and send the high-performance voltage-stabilizing protection device of electric work energy, in order to protection refrigerator and other household electrical appliance safety.
The purpose of this utility model, realized by accompanying drawing:
Accompanying drawing 1 provides the block diagram of the utility model embodiment, and this circuit is touched control circuit (5), simulated failure testing circuit (6), abnormal voltage sample circuit (7), self-protection, over-and under-voltage protective circuit (8), timing closing switching circuit (9) etc. fast and formed by autotransformer (1), relay contact combination (2), rectification circuit (3), voltage stabilizing circuit (4), relay.
The electrical schematic diagram of the utility model embodiment is provided by accompanying drawing 2, now in conjunction with the accompanying drawings circuit working principle of the present utility model is specifically described.
Autotransformer (1) is by actuating coil 1,2,3,4 taps, and low- voltage coil 5,6 taps are formed; Relay contact combination (2) is by the K that is connected to autotransformer 2,3,4 taps
1, K
2, the two pairs of contacts form; Rectification circuit (3) is made up of bridge full wave rectifier VC; Voltage stabilizing circuit (4) is by circuit of three-terminal voltage-stabilizing integrated IC
1And capacitor C
1, C
2, C
3Form; Relay touches control circuit (5) fast by resistance R
1-R
8, capacitor C
4-C
7, transistor V
1-V
6, adjustable resistance W
1, W
2, relay K
1, K
2Form; Simulated failure testing circuit (6) is by double-pole switch HL
1Deng composition; Abnormal voltage sample circuit (7) is by transistor V
7, resistance R
13, R
14, capacitor C
8Deng composition; Self-protection, over-and under-voltage protective circuit (8) are by resistance R
9-R
12And R
15, integrated circuit (IC)
2, transistor V
8, V
9, V
10, compositions such as voltage-stabiliser tube DW; Timing closing switching circuit (9) is by resistance R
16, R
17, capacitor C
9-C
12, integrated circuit (IC)
3, relay K
3Form; Indicating section is by A.C. voltmeter PV, LED
1, LED
2, resistance R
18, R
19Form.
The AC voltage-stabilizing part is touched control circuit fast by autotransformer and relay and is formed relay K under electronic circuit control
1, K
2According to the tap of the alternating voltage height fluctuation signal of taking a sample by logic automatic switchover autotransformer, when input voltage during at 160 volts to 270 volts range changings, output voltage can be stabilized in 200 volts to the 235 volts scopes, when line voltage during in normal range (NR), transport to refrigerator voltage and be line voltage, without the autotransformer coupling, saved magnetizing current.Its repeat circuit touches the control circuit course of work fast: when relay gets electric moment, be serially connected in the capacitor C in the relay coil loop
f(Fig. 2 middle finger C
5, C
7, C
12) be equivalent to short circuit, so, DC power supply V can be regarded as
CcDirectly be added in coil two ends, thereby the quickening of relay contact transfer time, action is resolute, the instantaneous power failure time when having reduced the contact switching.After the actuating of relay, capacitor C
fInoperative, be connected in parallel on C
fThe additional resistance R at two ends
f
（R
f= (V
CCC
f)/(I
L) - R
L）
(R among Fig. 2
fRefer to R
4, R
8, R
17) make the electric current that flows through coil keep rated value.The simulated failure testing circuit is by switch HL
1The input control signal that relay is touched control circuit fast is the connecting to neutral current potential by force, transistor V
1, V
2, V
3, V
4All end, so relay K
1K
2Dead electricity; autotransformer is in maximum pressure-increasning state; at civil power just often; the ac output voltage of voltage-stabilizing protection device will be above 240 volts of the protection values of setting; (can find out) the same with the overvoltage protection process (the overvoltage protection course of work is described in the back) from A.C. voltmeter PV indication; protective circuit is promptly made rapid reaction, by relay K
3The dump simulated failure is eliminated the back time-delay to be sent in 5-7 minute.
The work of protection part is by V
7, R
13, R
14, C
8The abnormal voltage sample circuit of forming is by voltage comparator ic
2, or gating element V
8, V
9, electronic switch V
10, thresholding current potential assembly R
9, R
10, R
11, R
12, the self-protection formed of element such as DW, overvoltage, under-voltage protecting circuit are by time-base circuit IC
3, delay cell R
16, C
9, carry out relay K
3Finish jointly Deng the timing closing switching circuit that element is formed.Defencive function is achieved in that the protective circuit (as 240 volts) that rises to setting when AC voltage-stabilizing part output voltage when being overpressure situation, and this voltage signal is promptly picked up by the inspection of abnormal voltage sample circuit, and is input to overvoltage comparator IC
2(2) with given Upper threshold current potential V
c
（V
c＝V
a× (R
12)/(R
10+ R
11+ R
12) ）
Make IC relatively
2(2) output high level; When the AC voltage-stabilizing output voltage protection voltage (as 180 volts) when being undervoltage condition that is lower than setting partly, the abnormal voltage sample circuit is examined the signal of picking up, by under-voltage comparator IC
2(1) input input is with given Lower Threshold current potential V
b
（V
b＝V
a× (R
11+ R
12)/(R
10+ R
11+ R
12) ）
Make IC relatively
2(1) output high level; No matter be IC
2(1) or IC
2(2) output high level is by V
8, V
9The OR circuit that constitutes is just exported high level makes electronic switch V
10Conducting is with time-base circuit IC
3Input current potential V
DConnect electronegative potential, IC
3Circuit upset output V
EBecome high potential, relay K
3Dead electricity is cut off out-put supply AC
1, realized overvoltage or under-voltage protection function.
The abnormal voltage sample circuit is directly to pick up partly output terminals A C of this machine AC voltage-stabilizing
2Voltage fluctuation signal because DC power supply V
CcElectronegative potential connect with autotransformer the 1st tap, constituted the sampled signal loop, so the signal that picks up not only reflects the fluctuation situation of line voltage, also reflect simultaneously the alternating voltage fluctuation situation after the voltage stabilizing of this machine, work as relay K
1, K
2The contact logic action gets muddled and (establishes 220 volts of input voltages, relay K
1Because of control unit fault dead electricity), output voltage will be above 240 volts of the protection voltages of setting, and the voltage signal that rises after the fault is picked up by the abnormal voltage sample circuit equally, and sends into overvoltage comparator IC
2(2), make IC
2(2) output high-voltage flat, and process or gating element V
9Make electronic switch V
10Conducting, time-base circuit IC
3Because of input V
DBe electronegative potential and overturn output V
EBecome high potential, carry out relay K
3Dead electricity has been cut off out-put supply AC
1, realized the self-protection function.
Rigidly connect energize or have a power failure after send a telegram here again time or time-base circuit IC after the protective circuit work
3Input current potential V
DBecause of C
9Two terminal potentials can not suddenly change and temporarily be electronegative potential, through T(T=1.1 * R
16* C
9, this machine T got 5-7 minute) and time delays, IC
3Input current potential V
D＞2/3 V
Cc, circuit upset, output current potential V
EBecome electronegative potential, carry out relay K
3Get electric adhesive, LED
1(record) is bright, LED
2(red) is dark, and indicating circuit is connected, ac output end AC
1Electricity is arranged, realize the timing closing switching function.
Other electrical appliance can be from AC voltage-stabilizing output terminals A C
2Output enlarges the utility model scope of application.
The utlity model has bigger AC voltage-stabilizing scope, when the input voltage of output voltage correspondence during at 180 volts to 240 volts 140 volts to 275 volts, under-voltage, the overvoltage protection scope is a foundation with the SG215-84 of Ministry of Light Industry refrigerator ministry standard, be lower than 180 volts for under-voltage, be higher than 240 volts and be overvoltage; The delay protection time is 5-7 minute; The utility model has been realized the self-protection problem that the voltage-stabilizing protection device is very necessary with new technological concept, and its self-protection function is monitoring this machine AC voltage-stabilizing operating state partly constantly; Realized voltage-stabilizing protection device autoprotection functional check problem, whether its simulated failure testing circuit can check this organizational security protective function to be devoted to one's duty easily; Thereby solved the voltage-stabilizing protection device of prior art; can't understand the operating state and the inherently safe of its defencive function in the use, can only give free rein to, the problem of stability and poor reliability; just on circuit structure and principle, improve design and address these problems, but do not influence cost.Its relay touches circuit fast, has reduced the impulse current that compressor electric motor is restarted, and compressor operation is comparatively steady.
Claims (4)
1, a kind of Electronic Control six function automatic voltage regulation protectors; this voltage-stabilizing protection device touches control circuit (5), simulated failure testing circuit (6), abnormal voltage sample circuit (7), self-protection, overvoltage, under-voltage protecting circuit (8), timing closing switching circuit (9) and display device fast by autotransformer (1), relay contact combination (2), rectification circuit (3), direct current regulation circuit (4), relay to be formed, and it is characterized in that:
A, self-protection, overvoltage, under-voltage protecting circuit (8) and AC voltage-stabilizing part output terminals A C
2Between connecting abnormal voltage sample circuit (7);
B, relay touch control circuit (5) fast and connect with relay contact combination (2), directly pick up the fluctuation signal of alternating voltage;
C, relay touch the assembly of connecting in the relay coil loop of control circuit (5) additional resistance and electric capacity parallel connection fast;
D, simulated failure testing circuit (6) are by double-pole switch HL
1, be connected in relay and touch fast between control circuit (5) input and the zero potential.
2, voltage-stabilizing protection device according to claim 1 is characterized in that the overvoltage comparator IC of self-protection, overvoltage, under-voltage protecting circuit (8)
2(2) Upper threshold current potential is connected to the V of thresholding current potential assembly
cPoint, under-voltage comparator IC
2(1) Lower Threshold current potential is connected to the V of thresholding current potential assembly
bPoint, the C of their input and abnormal voltage sample circuit (7)
8Link.
3, voltage-stabilizing protection device according to claim 1 is characterized in that relay touches the additional resistance R that connects in the relay coil loop of control circuit (5) fast
f=(VCC)/(IL)-R
L
4, voltage-stabilizing protection device according to claim 1 is characterized in that, double-pole switch HL
1Be connected in relay and touch two control unit inputs of control (5) fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90223071 CN2087393U (en) | 1990-10-31 | 1990-10-31 | Six-function voltage-stabilizing protector for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90223071 CN2087393U (en) | 1990-10-31 | 1990-10-31 | Six-function voltage-stabilizing protector for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2087393U true CN2087393U (en) | 1991-10-23 |
Family
ID=4900904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90223071 Withdrawn CN2087393U (en) | 1990-10-31 | 1990-10-31 | Six-function voltage-stabilizing protector for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2087393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529281A (en) * | 2013-10-24 | 2014-01-22 | 郑鲲鲲 | Voltage detection circuit with functions of complete coverage and real-time self-diagnosis, electronic equipment and automobile |
-
1990
- 1990-10-31 CN CN 90223071 patent/CN2087393U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529281A (en) * | 2013-10-24 | 2014-01-22 | 郑鲲鲲 | Voltage detection circuit with functions of complete coverage and real-time self-diagnosis, electronic equipment and automobile |
| CN103529281B (en) * | 2013-10-24 | 2016-08-31 | 郑鲲鲲 | Voltage detecting circuit, electronic equipment and the automobile of the real-time OBD of a kind of all standing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100566068C (en) | Hardware overvoltage breaking-off circuit | |
| CN103701141B (en) | Novel multifunctional encoder switch | |
| CN107635343B (en) | Input detection protection circuit and alternating current electronic ballast for HID lamp | |
| CN203839955U (en) | Novel multifunctional code switch with communication module | |
| CN2087393U (en) | Six-function voltage-stabilizing protector for refrigerator | |
| CN214754507U (en) | Circuit with timing function and leakage protection plug | |
| CN202649723U (en) | Novel self-start controller for use after power recovery of air conditioner | |
| CN203839954U (en) | Novel multifunctional code switch with temperature control function | |
| CN2412302Y (en) | Multifunctional protector for electrical appliances | |
| CN2304936Y (en) | Multifunctional wide range constant voltage protector | |
| CN102025160B (en) | Intelligent combined power capacitor | |
| CN2879407Y (en) | Fast exit module having hardware self-holding function | |
| CN201290000Y (en) | Full-automatic intelligent lightning protection ultra-undervoltage protector | |
| CN2821982Y (en) | Anti-lightning and anti-over voltage new household leak breaker | |
| CN2653521Y (en) | Phase lost detection circuit for power supply grid | |
| CN2281029Y (en) | Lightning-protection overvoltage protective moudel for power supply | |
| CN216526175U (en) | Resistive load life monitoring system of JL contactor | |
| CN201528300U (en) | Feedback detection circuit and single-phase motor soft starter | |
| CN2164605Y (en) | Phase-loose protector | |
| CN2165557Y (en) | Multifunctional protector for motor | |
| CN217034171U (en) | Electric life test system of multichannel high-voltage direct-current relay | |
| CN211826442U (en) | Fault current fusing element state detection device | |
| CN2667764Y (en) | Current mutual inductor overvoltage protector | |
| CN217901869U (en) | Alternating current-direct current driving voltage detection circuit | |
| CN216904266U (en) | Multifunctional household power consumption protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |