CN2269661Y - Electronic temperature controlled power saving protector for refrigerator - Google Patents
Electronic temperature controlled power saving protector for refrigerator Download PDFInfo
- Publication number
- CN2269661Y CN2269661Y CN 95206501 CN95206501U CN2269661Y CN 2269661 Y CN2269661 Y CN 2269661Y CN 95206501 CN95206501 CN 95206501 CN 95206501 U CN95206501 U CN 95206501U CN 2269661 Y CN2269661 Y CN 2269661Y
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- circuit
- refrigerator
- voltage
- resistance
- pin
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Abstract
The utility model discloses an electronic temperature controlled power saving protector for a refrigerator and overcomes the defect that the use of the existing refrigerator machine or the electronic temperature controller results in big power consumption and low utilization rate of the refrigerator. The utility model is composed of a protective circuit which can prolong the time when the voltage is overused or insufficient, a rectifying voltage stabilizing circuit which can provide working voltage, and a branching temperature control lighting starting circuit which is controlled by the rectifying voltage stabilizing circuit. The utility model can keep the original function of the refrigerator, and can save energy power when little food is stored in a short time in the refrigerator or the food only needs to be chilled; in addition, the refrigerator is protected well when the voltage is overused or insufficient, or when the electricity is cut off suddenly, and the service life of the refrigerator compressor is extended.
Description
The utility model is a kind of refrigerator electron formula temperature control electricity-saving protection device, and it belongs to the refrigerating equipment field, particularly relates to the control of these equipment and the configuration and the installation of safety device.It is formed by super, under-voltage delay protection circuit with by it provides the regulator rectifier circuit of operating voltage.
The household electric refrigerator forward low temperature of China, big volume development at present, but, Chinese people is liked fresh food, frozen food is not also generally accepted, who is reluctant that also the fresh high protein diet that price is higher such as chicken, fish, shrimp etc. are frozen into the lower frozen food of price and eat, and the family of China is the trend miniaturization again, and is in the majority with three-person household, concentrate the shopping cycle short, so the utilance of refrigerator is not high in addition.When refrigerator is deposited food and seldom and is only needed the short-term frozen food or only need chilled food (this situation be again account for the whole behaviour in service of refrigerator 80%), then wasted a large amount of electric energy in vain.
(Guan Wanli writes general refrigerator as " household electric refrigerator ", Shanghai scientific and technical literature publishing house July in 1987 the 3rd edition) book is introduced, it is provided with refrigerating chamber and refrigerating chamber, though wherein refrigerating chamber only accounts for 1/3rd to 1/4th of refrigerator overall volume, has consumed most of electric energy.For example the freezer temperature of Samsung, four-star refrigerator all is lower than-18 ℃ (drawing from national refrigerator standard GB8059.1-87), when ambient temperature is 32 ℃, the case internal-external temperature difference reaches about 50 ℃, so the temperature difference of the inside and outside great disparity of refrigerating chamber is the main cause of refrigerator consumed power.In addition, through reality test, the power consumption of the empty van power consumption of refrigerator when filling food is very nearly the same, that is to say, as long as refrigerator is in use, also can not make the few power consumption of refrigerator even deposit or do not deposit food less, it also will exhaust identical many electric energy.In sum, if can on refrigerator, realize the switching of temperature, but use then saves energy as Samsung, four-star cryogenic temperature being switched to a star cryogenic temperature or refrigerating chamber is switched to refrigerating chamber according to the actual needs in the life, but present refrigerator is adjusted the temperature-control range of thermostat before dispatching from the factory, the user can only adjust in the scope of adjusting, during switching temperature, the thermostat of current refrigerator can't be satisfied the demand if need according to the real life needs.Also have, since China's power capacity deficiency, many regional power supply voltage instabilities, super, the under-voltage and instant cut-off phenomenon of normal appearance, the normal use that this all is unfavorable for refrigerator very easily damages the compressor of refrigerator or shortens its useful life; For this reason, various forms of refrigerators are super, the under-voltage protection device occurs though have, and sell in the market, function singleness all arranged, the deficiency that cost is high.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and provides a kind of refrigerator that makes can keep former function; when needing, the freezer temperature of Samsung, four-star refrigerator can be switched to a star temperature or refrigerated storage temperature again and use, also its refrigerating chamber can be switched to the refrigerator electron formula temperature control electricity-saving protection device that refrigerating chamber uses for general refrigerator.
The purpose of this utility model can reach by following measure: the temperature control circuit that use is surpassed, under-voltage delay protection circuit is clamped down on comes the temperature of freezer chamber of refrigerator is controlled; this temperature control circuit is made up of astable multivibrator and voltage comparator, and astable multivibrator wherein is by 555 time-base integrated circuit IC
2Etc. formation, voltage comparator is by integrated operational amplifier A
4Etc. formation.Can make like this when not needing long-term storage food or only needing chilled food, the temperature of refrigerating chamber can be switched to a star (about 6 ℃) or refrigerated storage temperature (0～10 ℃), with saves energy.
The purpose of this utility model can also reach by following measure, in the oscillation circuit of astable multivibrator, be provided with a multiple spot change over switch and with the corresponding a string resistance that contains thermistor of this switch, while goes back in this oscillation circuit and is connected to diode, can change the operating frequency of oscillator and then make the utility model that bigger temperature-control range be arranged by rotating switch; Making things convenient for the user or to make refrigerator be in former function, or freezer temperature is switched to a star temperature, or refrigerating chamber is switched to refrigerating chamber, or temperature of refrigerating chamber switched to below 0 ℃ use.Use in the integrated four-operational amplifier one of A
4Constitute the voltage comparator in the temperature control circuit, other three operational amplifier A
1～A
3Be used for constituting window voltage comparator and delay circuit, to improve its whole reliability and stability and to reduce cost.Integrated operational amplifier A in super, under-voltage delay protection circuit
1, A
2In-phase input end and output between be connected to resistance respectively so that have Schmidt's (sluggishness) characteristic by its window voltage comparator that constitutes.The acoustics circuit of surpassed for improving its intelligent degree, also being installed with, under-voltage delay protection circuit being controlled.
The utility model has following advantage compared to existing technology:
1. the use value of refrigerator is improved, make its existing former function, the electricity-saving function of suitable China's national situation and habits and customs is arranged again;
2. when refrigerator is in power-saving running, its power consumption is reduced greatly, through test, when the freezer temperature with Samsung or four-star refrigerator switched to a star temperature, its power saving rate can reach about 40%, sees following table for details:
And when freezer temperature switched to refrigerated storage temperature, power saving rate saw following table for details then up to 70%:
3. when power-saving running, both avoided temperature rise too high, reduced mechanical wear again, so prolonged its useful life relatively because the shortening of compressor for refrigeration operating time makes;
4. when refrigerator is idle in the winter time, it can be in the power-saving running state, to reach purpose to its maintainability running, the possibility of having avoided the freezing liquid precipitation to stop up and corrode condenser pipe;
5. the temperature of cold storage chamber of refrigerator is reached below 0 ℃, solving refrigerator in that utilance is low at ordinary times, and during the Spring Festival, all often feel the not enough contradiction of refrigerating chamber;
6. have the delay protection function of super, under-voltage and instant cut-off and the aural warning prompt facility when these situations occurring simultaneously;
7. it is connected between refrigerator and the civil power, need change the circuit and the structure of refrigerator, can between former function and electricity-saving function, switch apace easily by toggle switch.
Describe concrete structure of the present utility model and working condition in detail below in conjunction with accompanying drawing.
Fig. 1 is an outline drawing of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
With reference to Fig. 1, Fig. 2, be respectively arranged with thermoregulation knob 9 on the shell 11 (with potentiometer W
3Corresponding), push-button switch 8 (K switch
2), step switch 7 (K switch
1), indicator light 5,6 (LEDs
1, LED
2) and socket 4.Electrical appliance part is installed in the inside of shell 11.Regulator rectifier circuit 1 connects civil power by plug 10, and socket 4 is by the break-make of the normally opened contact J-1 control city power supply of relay J.Regulator rectifier circuit 1 is made up of with voltage stabilizing, filter circuit capacitance decompression, bridge rectifier.Super, under-voltage delay protection circuit is to be made of window voltage comparator and delay circuit, and also additional in addition acoustics circuit is formed jointly.Temperature control circuit 3 is made up of astable multivibrator and voltage comparator.Astable multivibrator wherein is potentiometer W
3Resistance R
10, R
11, R
12, R
13, thermistor R
t, capacitor C
6Back cross-over connection V is in series
CCWith A super, under-voltage delay protection circuit 2
3Between the output, R
tThe thermistor of optional negative temperature coefficient is in resistance R
10, R
11, R
12, R
13With thermistor R
t4 contacts and the negative terminal V of circuit 1
SSBetween be connected to K switch
1555 time-base integrated circuit IC
27. pin connecting resistance R
12, R
13Contact, and be connected to diode D with A point span again
8, 2., 6. pin connects the A point, 8., 4. bipod meets V
CC, 5. pin is connected in series capacitor C
7The back meets negative terminal V with 1. pin
SS, 3. pin and V
CCBetween be serially connected with capacitor C
8, resistance R
14, with V
SSIndirect resistance R
15, LED
2, and also through relay J and diode D
9Meet negative terminal V
SSVoltage comparator is integrated operational amplifier A
4In-phase input end connect VD point in super, the under-voltage delay protection circuit 2, inverting input connects capacitor C
8, resistance R
14Contact h point, output is through diode D
10, K switch
2Connect the A point.
Civil power is through capacitor C
1Step-down, diode D
1～D
4After the rectification, again by voltage-stabiliser tube DW
1, capacitor C
2Voltage stabilizing, filtering and become a stable dc low-voltage are to offer circuit 2 and circuit 3.The civil power sampled signal is through diode D
5After the rectification, by resistance R
3, R
4Take out after the dividing potential drop and send into A
1Inverting input and A
2In-phase input end so that with by resistance R
5, R
17Dividing potential drop is through potentiometer W
1, W
2Send into A after the taking-up
1In-phase input end, A
2The reference voltage of inverting input compare.At civil power just often (175V～245V), A
1, A
2All export high level, B point current potential can rise to greater than reference voltage V D, A
3Output is a low level, circuit 3 work.When civil power surpassed 245V, the current potential that C is ordered raise and makes A
1The inverting input current potential greater than the in-phase input end current potential, this moment A
1Output is a low level, diode D
6Conducting descends B point current potential, causes A
3The output high level quits work circuit 3, and relay J discharges cuts off the refrigerator power supply.When civil power was lower than 175V, C point current potential descended, and makes A
2The in-phase input end current potential less than inverting input current potential, A
2Output be low level, diode D
7Conducting descends B point current potential, cuts off civil power equally refrigerator is protected.When super, under-voltage delay protection, A
3Output be high level, give IC
3V
DDEnd adds operating voltage, and simultaneously from RPT end input triggering signal, so buzzer HTD sends the sound equipment prompting of civil power abnormality warnings.
When the need power-saving running, with K switch
1Be allocated to 1 grade or 2 grades, if rigidly connect logical civil power, then this moment is because capacitor C
5Both end voltage can not be suddenlyd change, and makes A
3The in-phase input end current potential is greater than inverting input, and causing its output is high level, thus A point current potential greater than
V
CC, IC
23. pin be low level, not adhesive of relay J.Circuit 1 passes through resistance R simultaneously
8To capacitor C
5Charging raises B point current potential gradually, when rising to greater than A
3During the in-phase input end current potential, A
3Output upset be low level, circuit 3 is started working; This moment since A point current potential less than
V
CC, so IC
23. pin output high level, the relay J adhesive, normally opened contact J-1 closure is started working with the refrigerator that socket 4 is connected.Circuit 1 is by potentiometer W simultaneously
3, resistance R
10(2 grades are passed through W
3, R
10, R
11), diode D
8To capacitor C
6The charging, A point current potential is raise gradually, when rise to greater than
V
CCThe time IC
23. pin upset be low level, relay J discharges, compressor quits work.IC meanwhile
27. pin to negative terminal V
SSConducting, capacitor C
6By thermistor R
t, resistance R
13To V
SSThe discharge, A point current potential is descended gradually, when A point current potential drop to less than
V
CCThe time, IC
23. pin upset output high level, the relay J adhesive, compressor is started working again.Can make the freezer chamber of refrigerator temperature constant and so forth within certain scope, adjust potentiometer W
3Can change capacitor C
6Charging interval, the refrigerator refrigeration room temperature is changed at (2 grades about-6 ℃) between 0～10 ℃.When power-saving running, by thermistor R
tBy changing capacitor C voluntarily
6The time that discharges and recharges the fluctuation of the caused freezer temperature of variation of ambient temperature is automatically regulated.
If need to recover the former function of refrigerator, can be with K switch
1Be allocated to 4 grades, this moment is to capacitor C
6Charging circuit by short circuit, A point current potential all the time less than
V
CC, IC
23. pin can not overturn all the time, relay J is adhesive all the time, so refrigerator recovers former function.When meeting instant cut-off, relay J discharges, and refrigerator circuit is cut off, and at this moment then must pass through resistance R again if restore electricity
8To capacitor C
5Charging just can make A
3Output low level, circuit 3 just can be reworked (delay time is 4～6 minutes), have avoided refrigerator at this moment because the very high (9～14Kg/cm of its refrigerating system pressure inside
2), the compressor possibility that starts difficulty immediately and easily burn.
When need switch to refrigerating chamber when using with the refrigerating chamber of refrigerator, can be with K switch
1Be allocated to 3 grades, at this moment resistance R
13By short circuit, so capacitor C
6Discharge time shorten, simultaneously added resistance R because of charging circuit
12And make capacitor C
6Charging interval elongated, also promptly changed the start-stop ratio of freezer compressor, make the temperature of refrigerating chamber can reduce to below 0 ℃.
By IC
1A
4With diode D
10, K switch
2, resistance R
14, capacitor C
9The illumination start-up circuit of being formed (that is to say voltage comparator) has the protection of compressor and the effect of stablizing refrigerator temperature.When freezer compressor is just shut down make the refrigerator outage because relay J discharges, this moment the user if unpack door then case intraoral illumination lamp do not work, if make the relay J adhesive by force, though illuminating lamp is bright, in sum, very easily damage compressor owing to the high pressure of refrigerating system inside; Therefore, when just shutting down, IC
23. pin be low level, capacitor C
8Pass through resistance R
14Charging raises h point current potential gradually, after after a while, and A
4The inverting input current potential greater than the in-phase input end current potential, make A
4Output is a low level, at this moment toggle switch K
2Just can make A point current potential less than
V
CC, the adhesive of relay J ability, refrigerator could be switched on, and is unlikely damage in the time of can guaranteeing under any circumstance to start illuminating lamp like this or jeopardizes compressor.In addition, owing to when starting illuminating lamp, also started compressor,, played the effect of stable refrigerator temperature so can remedy or reduce because of opening the fluctuation of the temperature inside the box that refrigerator doors causes.
Claims (5)
1. refrigerator electron formula temperature control electricity-saving protection device; comprise super, under-voltage delay protection circuit (2) and provide the regulator rectifier circuit (1) of operating voltage for it; it is characterized in that also being equipped with surpassed, temperature control circuit (3) that under-voltage delay protection circuit (2) is clamped down on; said temperature control circuit (3) is made up of astable multivibrator and voltage comparator, and said astable multivibrator is by 555 time-base integrated circuit IC
2Etc. formation, said voltage comparator is by integrated operational amplifier A
4Etc. formation.
2. electricity-saving protection device according to claim 1 is characterized in that astable multivibrator is potentiometer W
3, resistance R
10, R
11, R
12, R
13, thermistor R
t, capacitor C
6Back cross-over connection V is in series
CCA with circuit (2)
3Between the output, in resistance R
10, R
11, R
12, R
13With thermistor R
t4 contacts and negative terminal V
CCBetween be connected to K switch
1, 555 time-base integrated circuit IC
27. pin connecting resistance R
12, R
13Contact, and be connected to diode D with A point span
8, 2., 6. pin connects the A point, 8., 4. bipod meets V
CC, 5. pin is connected in series capacitor C
7The back meets V with 1. pin
SS, 3. pin and V
CCBetween be connected in series capacitor C
8, resistance R
14, also meet V simultaneously through relay J
SSVoltage comparator is integrated operational amplifier A
4In-phase input end connection circuit (2) in the VD point, inverting input connects the h point, its output is through diode D
10, K switch
2Connect the A point.
3. electricity-saving protection device according to claim 2 is characterized in that the two ends of the relay J in the astable multivibrator and is connected to diode D
9, IC
23. pin and V
SSBetween be serially connected with resistance R
15With LED
2, thermistor R
tThermistor for negative temperature coefficient.
4. according to claim 1 or 3 described electricity-saving protection devices, it is characterized in that the integrated operational amplifier A in the circuit (2)
1, A
2In-phase input end and output between be connected to resistance R respectively
6, R
7, so that have Schmidt's characteristic by its window voltage comparator that constitutes.
5. according to claim 1 or 3 described electricity-saving protection devices, it is characterized in that in the circuit (2) with the acoustics circuit that is subjected to circuit (2) control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95206501 CN2269661Y (en) | 1995-03-18 | 1995-03-18 | Electronic temperature controlled power saving protector for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95206501 CN2269661Y (en) | 1995-03-18 | 1995-03-18 | Electronic temperature controlled power saving protector for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2269661Y true CN2269661Y (en) | 1997-12-03 |
Family
ID=33858410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95206501 Expired - Fee Related CN2269661Y (en) | 1995-03-18 | 1995-03-18 | Electronic temperature controlled power saving protector for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2269661Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390047A (en) * | 2017-06-22 | 2017-11-24 | 厦门芯阳科技股份有限公司 | A kind of method that potentiometer gear is determined based on RC discharge and recharges |
| CN109088392A (en) * | 2018-09-06 | 2018-12-25 | 深圳和而泰智能控制股份有限公司 | A kind of protection circuit and electronic equipment |
-
1995
- 1995-03-18 CN CN 95206501 patent/CN2269661Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390047A (en) * | 2017-06-22 | 2017-11-24 | 厦门芯阳科技股份有限公司 | A kind of method that potentiometer gear is determined based on RC discharge and recharges |
| CN109088392A (en) * | 2018-09-06 | 2018-12-25 | 深圳和而泰智能控制股份有限公司 | A kind of protection circuit and electronic equipment |
| CN109088392B (en) * | 2018-09-06 | 2024-04-05 | 深圳和而泰智能控制股份有限公司 | Protection circuit and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |