CN2116293U - Electronic electricity-saving full-automatic protector for refrigerator - Google Patents
Electronic electricity-saving full-automatic protector for refrigerator Download PDFInfo
- Publication number
- CN2116293U CN2116293U CN 92200898 CN92200898U CN2116293U CN 2116293 U CN2116293 U CN 2116293U CN 92200898 CN92200898 CN 92200898 CN 92200898 U CN92200898 U CN 92200898U CN 2116293 U CN2116293 U CN 2116293U
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- refrigerator
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- circuit
- capacitor
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- 230000001012 protector Effects 0.000 title claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 230000006837 decompression Effects 0.000 claims 1
- 235000013305 food Nutrition 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013611 frozen food Nutrition 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000028016 temperature homeostasis Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The electronic energy-saving full-automatic protector for refrigerator is suitable for saving energy and protecting refrigerator. The existing refrigerator only needs to refrigerate articles or only needs to freeze articles for a short time, so that the utilization rate is low, and much electric energy is wasted. The utility model discloses it is constituteed to detect super under-voltage time delay protection circuit and time control circuit by power, commercial power. The electric refrigerator is connected between the commercial power and the refrigerator in series, so that the electric refrigerator can keep the original function, has a remarkable electricity-saving function when only the articles are refrigerated or frozen for a short time, and can be effectively protected when the electric refrigerator is subjected to overpressure, undervoltage and instant power failure.
Description
The utility model belongs to the economize on electricity field, relates to a kind of economize on electricity and protective device of household electric refrigerator.
(write by Wan Bao Electrical Appliance Industry Company in Guangzhou as " household electric refrigerator uses and maintenance " for the refrigerator that generally uses at present, China Economy Press's publication) described in the book, be provided with refrigerating chamber and refrigerating chamber respectively, wherein refrigerating chamber is provided with for the long-term storage frozen food, though its volume only accounts for about 1/4th of refrigerator overall volume, has consumed most of electric energy.Refrigerator in the market substantially all be Samsung, four-star its freezer temperature below-18 ℃ when ambient temperature is 32 ℃, the refrigerating chamber internal-external temperature difference reaches about 50 ℃, therefore, the temperature difference of the inside and outside great disparity of refrigerating chamber is the basic place of consumed power.In real life, when only needing the short-term store food or only needing chilled goods, then wasted a large amount of electric energy in vain.
As realizing that on refrigerator temperature switches, but saves energy then, (refrigerating chamber is switched to refrigerating chamber or the four-star cryogenic temperature of Samsung is switched to a star cryogenic temperature) according to living needs.But must use electromagnetically operated valve or employing double-compressor group in refrigerating system inside, but because the double-compressor cost is too high, and electromagnetically operated valve exists shortcomings such as making difficulty, easily leakage, cost height, life-span weak point, still can not be widely used in the normal domestic use refrigerator at present.(" electric era " 1991 the 5th phase, China Institute of Electrical Engineering Technology sponsors, and China Machine Press publishes; " household electrical appliance " 1989 the 3rd, the 12nd phase, Chinese light industry association, household electrical appliance engineering association sponsors, household electrical appliance publishing house publishes)
In addition, because China's power capacity is not enough, superpressure, under-voltage and instant cut-off phenomenon often appear in a lot of regional power supply voltage instabilities, and this all is unfavorable for the normal use of refrigerator, fragile compressor or shorten its useful life.
The utility model purpose is to overcome above shortcoming, avoid the deficiencies in the prior art, a kind of additional electronics of refrigerator is provided, make refrigerator both can keep original function, when needs, refrigerating chamber can be switched to refrigerating chamber again and use (0 ℃-10 ℃ of standard refrigerated storage temperatures), for Samsung, four-star refrigerator (below the cryogenic temperature-18 ℃, but store food is more than half a year) this device can switch to its cryogenic temperature one star and use (about 6 ℃, but store food can satisfy general family needs in one month) with saves energy.The superpressure that civil power is occurred, under-voltage and instant cut-off play in time and effectively protective effect simultaneously.
The utility model is by power supply; The refrigerator electron electricity-saving protection device that city's electro-detection ultra under-pressure delay protection circuit and time control circuit are formed; it is serially connected with between civil power and the refrigerator; the start-stop ratio of control and change compressor when needing; the temperature of freezer compartment of refrigerator is risen to a standard refrigerated storage temperature (0 ℃-10 ℃) or a star cryogenic temperature (6 ℃) and maintain, be used to deposit the frozen food that only needs chilled food or only need short-term to deposit.Because refrigerating chamber only be about 1/4th of refrigerator volume, reduced the temperature difference of the inside and outside great disparity of refrigerator after having changed the temperature of refrigerating chamber in addition, so can make power consumption reduce greatly through test in the time need refrigerating power saving rate up to more than 70%, test data such as Fig. 3.
When only needing short-term to deposit frozen goods, then can be by adjusting thermoregulation knob, make refrigerating chamber keep a star cryogenic temperature, because a star cryogenic temperature is higher than Samsung, four-star cryogenic temperature far away, therefore also reduced the inside and outside greatly different temperature difference of case, and making the compressor operating time decreased so power consumption reduces greatly through test, power saving rate can reach about 40%, test data such as Fig. 4.
Because in power-saving running, the compressor bank operating time shortens, and has avoided temperature rise too high, so prolonged its useful life comparatively speaking.In power-saving running, former temperature of refrigerating chamber is lower than the ring temperature, can be used to deposit the article that birds, beasts and eggs, vegetables, fruit etc. do not need deepfreeze.
Arrive refrigerator when on the shelf when winter, refrigerator can be in the power-saving running state, to reach refrigerator maintainability running purpose.
In addition, because the national conditions and habits and customs of China, the refrigerator utilance is very low at ordinary times, and often feels that during the Spring Festival refrigerating chamber puts inadequately, and this section non-electricity protector can make cold storage chamber of refrigerator reach when needed below the freezing point (0 ℃);
No matter which kind of running status refrigerator is in, and can cut off the electricity supply rapidly as civil power superpressure, under-voltage the utility model; Can play the delay protection effect to refrigerator as momentary power failure.
In addition, the utility model also has easy to install the need that refrigerator is made any change, reliable operation, characteristics such as high performance price ratio.
Describe concrete structure of the present utility model and operation principle in detail below in conjunction with accompanying drawing:
Fig. 1 is external form figure of the present utility model, and Fig. 2 is circuit theory diagrams of the present utility model, and Fig. 3 Fig. 4 is the comparison diagram that refrigerator uses the utility model front and back power consumption.
Referring to Fig. 1 and Fig. 2, indicator light 4,5(LED are arranged on shell 10
1, LED
2) reset switch 6(K switch
2) cold expansion switch 7(K switch
1), thermoregulation knob 9(and potentiometer W
3Match), and socket T.The electrical appliance part of electronic power-saving device is installed in the shell 10.Power supply 1 connects civil power by plug 8, and socket T is by relay normally open contact J-1 control on/off, D
1-D
4Constitute its input of rectification full-bridge through C
1Be parallel to the civil power two ends after (or transformer), output is parallel with voltage-stabiliser tube DW
1Filter capacitor C
2
City's electro-detection, ultra under-pressure delay protection circuit 2 are by IC
1, (555 time-base integrated circuit) BG
1, BG
2Deng form IC wherein
1Be connected into bistable circuit (Schmidt trigger), IC
12. 6. be connected to delay capacitor C between bipod and ground, and pass through R
3Connect power positive end, 8. 4. bipod connects power positive end, 1. pin ground connection, and 5. pin passes through C
63. ground connection be connected to LED between pin and power positive end
1, R
6And join with the ground end of circuit 3.D
5Positive pole connects civil power, the other end passes through R
1, W
1And R
2, W
2Ground connection, DW
2Be serially connected with W
1With BG
1Between the base stage, DW
2Be connected to capacitor C between negative pole and ground
3, DW
3Be serially connected with W
2With BG
2Between the base stage, DW
3Be connected to capacitor C between negative pole and ground
4BG
1, BG
2Be connected to R between collector electrode and power positive end respectively
3, R
4, BG
1, BG
2The equal direct ground connection of emitter.D
6Positive pole and BG
1Collector electrode joins, the other end and DW
3Negative pole joins, D
7Negative pole meets BG
2Collector electrode, positive pole be connected to the A point.
Time control circuit 3 is by IC
2The astable multivibrator that (555 time-base integrated circuit) is connected into is formed, wherein W
3, R
7, R
8, R
9, R
10, C
7Series connection back cross-over connection power positive end and IC
13. between the pin, at R
7, R
8, R
9, R
10Be connected in parallel to K switch on Chuan Jie three contacts mutually
1, at C
7Two ends be connected in parallel to K switch
2, R wherein
7, R
9Be thermistor.IC
27. pin be connected to R
8With R
9Contact, 2. 6. bipod is connected to B point, D
8Positive pole meets 7. another termination of pin B point, IC
28. 4. bipod connects power positive end, 1. pin meets IC
13. pin, IC
25. pin passes through capacitor C
4Meet IC
13. pin, IC
23. pin and IC
13. be connected to relay J, D between pin, and R
11, LED
2
Because the utility model is controlled at a standard refrigerated storage temperature or a star cryogenic temperature with the freezer temperature of refrigerator when power-saving running, though and at this moment the temperature of cold compartment of refrigerator is lower than ambient temperature, be in on-state all the time but still be higher than temperature so the former control system of refrigerator that former each grade of thermostat controlled in the refrigerator.
When the need power-saving running with K
1Be allocated to G shelves, K
2Open, power supply 1 is connected, and civil power passes through C
1Step-down, D
1-D
4Rectification, DW
1Voltage stabilizing C
2Be low-voltage dc power supply after the filtering, it is through R
5To C
5Charging raises A point current potential gradually, when rising to＞IC during 2/3 Vcc
13. the pin upset is low level, and circuit 3 is started working.This moment is because C
7Both end voltage can not be suddenlyd change, so B point current potential is lower than 1/3 Vcc, so IC
23. pin is exported high level, the relay J adhesive, and normally opened contact J-1 closure is started working with the compressor for refrigeration that socket T is connected.Power supply passes through W simultaneously
3, R
7D
8To capacitor C
7Charging raises B point current potential gradually, when rising to＞IC during 2/3 Vcc
23. the pin upset is low level, and J discharges, J-1 disconnects, compressor quits work.IC meanwhile
27. pin conducting over the ground, C
7Pass through R
10, R
9And IC
27. pin discharges over the ground, and B point current potential is descended gradually, when B point current potential drop to＜during 1/3 Vcc, IC
23. pin upset output high level, J adhesive, compressor are started working again.Can make the freezer chamber of refrigerator temperature constant and so forth in certain scope.Adjust W
3Can change C
7Charging interval, just change time of compressor operating, the freezer compartment of refrigerator temperature is changed between-6 ℃ to 10 ℃.Therefore adjust W
3Freezer compartment of refrigerator can be switched to the refrigerating chamber use or Samsung, four-star refrigerator refrigerating chamber are switched to a star and use.In power-saving running, owing to exist the temperature difference of spring, summer, autumn, the four seasons in winter and Day and night, the temperature in the refrigerating chamber also fluctuates with variation of ambient temperature, the utility model when variation of ambient temperature by thermistor R
7, R
9Automatically carry out temperature-compensating; When the ring temperature rise, negative is thermistor R
9Resistance diminishes, and makes C
7Discharge time shorten the compressor shutdown time shortened, otherwise then elongated; Also making when the ring temperature rise just is being thermistor R
7It is big that resistance becomes, and makes C
7Charging interval is elongated, just the compressor operating time elongated, otherwise then shorten.
If need to recover the former function of refrigerator, then only need with reset switch K
2Close, at this moment C
7By short circuit, the B point is always electronegative potential, IC
2All the time can not overturn, J is adhesive all the time, and socket T powers all the time, so refrigerator has recovered former function.Though do not play the economize on electricity effect this moment, but still have defencive function.When meeting instant cut-off, the very high (9-14kg/cm of refrigerating system internal pressure
2), compressor starts difficulty immediately, and easily burns.The utility model can both play the delay protection effect under any state, J discharges after outage, and refrigerator circuit is cut off, and at this moment then must pass through R again if restore electricity
5To C
5Charging makes A point potential rise to＞2/3 Vcc, IC
13. pin could overturn and be low level, and circuit 3 refrigerator of just reworking just can be resumed power supply (delay time is 4-6 minute).
The civil power sampled signal is through D
5After the rectification respectively through R
1, W
1And R
2, W
2Take out after the dividing potential drop, as civil power BG just often
2End, its current collection is high potential very, so A point current potential can rise to＞2/3 Vcc IC
13. pin be low level, circuit 3 work.When civil power surpasses 245V, R
2, W
2Dividing potential drop increases, voltage-stabiliser tube DW
3Breakdown conducting, BG
2Also conducting simultaneously, collector potential descend and make A point current potential＜1/3 VccIC
1Upset, it is pin output high level 3., and circuit 3 quits work, and J discharges and cuts off the refrigerator power supply.
When civil power is lower than 175V, R
1, W
1Dividing potential drop reduces, DW
2Turn-off BG
1End, its current collection is high potential very, makes DW
3Conducting, BG
2Also conducting simultaneously, its collector potential descend and make A point current potential＜1/3 Vcc, and circuit 3 quits work equally, cuts off the electricity supply, thereby refrigerator is protected.
Reasonably control the start-stop ratio of freezer compressor, the refrigerating chamber of refrigerator can be switched to refrigerating chamber uses, for example during the Spring Festival, the start-stop ratio of general refrigerator mostly is between the 1:2 to 1:4, this moment as with the start-stop ratio change between the 1:1 to 2:1, temperature of refrigerating chamber can reduce to below 0 ℃.
When need switch to the refrigerating chamber use with refrigerating chamber, with K
2Open K
1Place the E shelves, at this moment R
9By short circuit, so C
7Discharge time shorten, just the compressor shutdown time shortens, simultaneously charging circuit has added R
8Make C
7Charging interval just the compressor operating time elongated, therefore changed the start-stop ratio of compressor.Use this kind drive manner to be different to use " cold by force " shelves of thermostat in the refrigerator, power consumption is too high when turning round because of " cold by force " shelves, and can not shut down because of the continuous running of freezer compressor and make the compressor temperature rise too high.
Claims (4)
1, a kind of refrigerator electron economize on electricity full-automatic protector, feature of the present utility model is:
A, power supply 1 are by decompression capacitor C
1(or transformer), rectifying tube D
1-D
4, voltage-stabiliser tube DW
1With filter capacitor C
2Constitute D wherein
1-D
4Form bridge rectifier, its input is through C
1Be parallel to the civil power two ends, output is connected in parallel to DW
1With C
2, and be connected in parallel to the supply socket T of relay J (or bidirectional triode thyristor) its break-make of controlling that is subjected in the circuit 3 at the civil power two ends,
B, city's electro-detection, ultra under-pressure delay protection circuit 2 are by IC
1(555 time-base integrated circuit), BG
1, BG
2Deng form IC wherein
1Be connected into bistable circuit (Schmidt trigger), IC
12. 6. be connected to delay capacitor C between bipod and ground
3, and pass through R
5Connect power positive end, 8. 4. bipod connects power positive end, 1. pin ground connection, 5. pin passes through C
6Ground connection, 3. the ground end of pin and circuit 3 links D
5Positive pole connects civil power, and the other end passes through R
1, W
1And R
2, W
2Ground connection, DW
2Be serially connected with W
1With BG
1Between the base stage, DW
2Be connected to capacitor C between negative pole and ground
3, DW
3Be serially connected with W
2With BG
2Between the base stage, DW
3Be connected to capacitor C between negative pole and ground
4, BG
1, BG
2Be connected to R between collector electrode and power positive end respectively
3, R
4, BG
1, BG
2The equal direct ground connection of emitter.D
6Positive pole and BG
1Collector electrode joins, the other end and DW
3Negative pole joins, D
7Negative pole meets BG
2Collector electrode, positive pole is connected to the A point,
C, time control circuit 3 are by IC
2The astable multivibrator that (555 time-base integrated circuit) is connected into is formed, wherein W
3, R
7, R
8, R
9, R
10, C
7Series connection back cross-over connection power positive end and IC
13. between the pin, IC
27. pin be connected to R
8With R
9Contact, 2. 6. bipod is connected to B point, D
8Positive pole meets IC
27. pin, another termination B point, IC
28. 4. bipod connects power positive end, and 1. pin meets IC
13. pin, IC
25. pin pass through capacitor C
8Meet IC
13. pin, IC
23. pin and IC
13. be connected to relay J, D between pin
9
2, electronics electricity-saving protection device according to claim 1 is characterized in that at R
7, R
8, R
9, R
10Be connected in parallel to K switch on Chuan Jie three contacts mutually
1, in capacitor C
7Two ends be connected in parallel to K switch
2
3, electronics electricity-saving protection device according to claim 1 and 2 is characterized in that the R in the circuit 3
7, R
9Be thermistor.
4, electronics electricity-saving protection device according to claim 1 is characterized in that at power positive end and IC
13. be serially connected with R between pin
6With LED
1, at IC
23. pin and IC
13. be serially connected with R between pin
11With LED
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92200898 CN2116293U (en) | 1992-01-18 | 1992-01-18 | Electronic electricity-saving full-automatic protector for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92200898 CN2116293U (en) | 1992-01-18 | 1992-01-18 | Electronic electricity-saving full-automatic protector for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2116293U true CN2116293U (en) | 1992-09-16 |
Family
ID=4948058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92200898 Granted CN2116293U (en) | 1992-01-18 | 1992-01-18 | Electronic electricity-saving full-automatic protector for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2116293U (en) |
-
1992
- 1992-01-18 CN CN 92200898 patent/CN2116293U/en active Granted
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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 |