CN2313193Y

CN2313193Y - Electricity-saving protector of refrigerator

Info

Publication number: CN2313193Y
Application number: CN 97239167
Authority: CN
Inventors: 周新武; 樊良辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-12
Filing date: 1997-11-12
Publication date: 1999-04-07
Anticipated expiration: 2007-11-12

Abstract

The utility model relates to an electricity-saving protector of a refrigerator, comprising a DC voltage stabilizing circuit, an over voltage and under voltage protective circuit, a power saving control circuit and a time delay protective circuit. The power saving control circuit is composed of a relay, a time-base chip used for timing control, an RC charging and discharging loop and a diode, wherein, the RC charging and discharging loop comprises a season selective switch which can adjust the power supplying time of the refrigerator, the time-base chip is connected with the relay through the time delay protective circuit, and the contact of the relay is connected with the power input terminal of the refrigerator in series to form a loop and then is connected with the AC input terminal. The utility model has conspicuous electricity-saving effect and overall function with convenient use, and can reliably protect the refrigerator to extend the service life.

Description

Refrigerator electricity-saving protection device

The utility model relates to a kind of economize on electricity and protective device of refrigerator.

Refrigerator inside generally all is provided with temperature controller or battery-conserving switch at present, regulates the refrigerator internal temperature to realize economize on electricity.But in fact power savings is also not obvious, and its temperature regulating range is very limited; Refrigerator on the market generally designs by summer high temperature weather, and China's most of area temperature difference throughout the year is bigger, it is temperature required that refrigerator does not need too many electric energy just can keep in the refrigerator under low temperature condition, so waste of energy is very big when spring, autumn and winter using refrigerator.Therefore at present the structure of refrigerator makes its compressor operating time every day about 12 hours, and the compressor start number of times is frequent, and internal temperature of refrigerator remains on the low temperature about-15 ℃ for a long time, and power consumption is big, has also reduced the service life of refrigerator.Present in addition refrigerator protector generally only possesses voltage stabilizing or delayed startup function, function singleness, imperfection.

The purpose of this utility model be to provide a kind of power savings significantly, complete function, easy to use and can protect refrigerator reliably to prolong the refrigerator electricity-saving protection device in its service life.

The technical solution of the utility model is as follows: it comprises direct current regulation circuit, superpressure under-voltage protecting circuit, economize on electricity control circuit and delay protection circuit, wherein said economize on electricity control circuit by relay, carry out time-controlled time base chip, RC charging and discharging circuit and diode that the time that discharges and recharges is adjustable are formed, comprise in the RC charging and discharging circuit that wherein but manual adjustment discharges and recharges resistance value to change the selector switch in season to the refrigerator power-on time, this RC charging and discharging circuit and time base chip link, the time base chip link by delay protection circuit and relay; The loop that a normal opened contact of relay is connected with the refrigerator power input is attempted by the alternating current input.In the RC charging and discharging circuit of economize on electricity in the control circuit, also comprise can regulating continuously for one discharging and recharging resistance value changing the potentiometer of temperature in the refrigerator, this potentiometer and season selector switch link.This economize on electricity control circuit design of the present utility model; can make the user according to environment temperature and use needs; quantitatively provide electric energy for refrigerator; start the working time length of compressor for refrigeration by energising; spring and autumn can be set; summer; gear such as winter and quick-frozen; by season selector switch select; and the temperature of freezer chamber of refrigerator is carried out suitable adjusting by adjustable potentiometer; thereby reach the effect of economize on electricity significantly; can satisfy simultaneously the fresh-keeping electricity consumption requirement of refrigerator refrigeration again; and can reduce the wearing and tearing of compressor, and add the protective effect of delay protection circuit, more can prolong the service life of refrigerator.

The superpressure under-voltage protecting circuit that the utility model disposed can be cut off the electricity supply when external AC-input voltage is too high or too low automatically, and the protection refrigerator is not because of superpressure or under-voltage being damaged.The delay protection circuit can not be damaged the automatic time delay 5 to 8 minutes start-up time of compressor with the protection compressor.

The utility model links with external civil power in use, and provides a refrigerator power input socket to be used to the refrigerator of pegging graft.The user can be according to Various Seasonal and indoor temperature, or according to depositing what of quantity of food in the refrigerator, with season selector switch place corresponding position, if freezer temperature is nonconforming, regulates again and be used for the potentiometer knob that oven temperature, is regulated.When needing rapid ice making or refrigeration, with season selector switch place " quick-frozen " position to get final product.

Economize on electricity amplitude of the present utility model is big, and wherein the economize on electricity in summer is more than 20%, and spring and autumn economizes on electricity more than 60%, the economize on electricity of winter low temperature weather is more than 80%, annual economize on electricity amplitude can reach more than 40%, and the colder area of northerly weather, power savings is more considerable.Overpressure protection operation voltage of the present utility model is 242V ± 2V, and the under-voltage protection operation voltage is 187V ± 2V, and rated voltage is 220V.

The utility model power savings is remarkable, and complete function can be refrigerator overpressure protection, under-voltage protection and delay protection are provided, and can protect refrigerator to prolong its service life reliably, and is easy for operation, is applicable to all kinds of refrigerators.

Further specify the utility model below in conjunction with accompanying drawing.

Fig. 1 is the circuit theory diagrams of the utility model embodiment.

As shown in Figure 1, the civil power of alternating current 220V is from the input input on the figure left side, and K1 is a power switch, and the power input socket of refrigerator is inserted on the socket CK; Transformer B among the figure, bridge rectifier D1～D4, capacitor C 1 and C2 and 7812 mu balanced circuits, make civil power after the input through step-down, rectification, filtering and voltage stabilizing after, supply with 12 volts of DC voltages to other each several part circuit.Base chip when IC1 among the figure and IC2 are the NE555 that is used to control, potentiometer W1 and W2, capacitor C 3 and C4 constitute the superpressure under-voltage protecting circuit, and relay J has disposed control contact J11, J12 and J22; When civil power is reduced to 187V and when following, one of W1 output controls signal to IC2 the 4th pin less than 0.7V's, forces the IC2 3 pin output electronegative potential that resets, and relay J discharges J22 and disconnects, and cuts off refrigerator power, realizes under-voltage protection; When civil power is increased to 242V and when above, the W2 current potential raises, triode BG1 collector current reduces; potential drop is low to moderate below the 0.7V; control IC1 the 4th pin forces IC1 to reset, the 3rd pin output electronegative potential; BG2 ends; to high potential of IC2 the 2nd, 6 pin output, make IC2 the 3rd pin output electronegative potential, relay J discharges J22 and disconnects; cut off refrigerator power, realize overpressure protection.Resistance R 10, R11, R12, capacitor C 7 and relay tip J11 and J12 constitute the delay protection circuit; Behind power connection, charge to C7 by J11, R10, R11, IC2 the 2nd, 6 pin are reduced gradually by high potential, and after 5 to 8 minutes, potential drop is to 4V, and IC2 overturns, its 3rd pin output high potential, refrigerator power is connected in relay J control J22 adhesive; J11 disconnects simultaneously, the J12 closure, and the C7 discharge is for time-delay is next time got ready.Chip IC 1, resistance R 3, R4, R5, R6, R7, adjustable potentiometer W3, diode D5, D6, capacitor C 5, C6, season, selector switch K2-1, K2-2 constituted the economize on electricity control circuit, when connecting power supply, IC1 the 2nd, 6 pin are electronegative potential, the 3rd pin output high potential, delay time after 5 to 8 minutes, make IC2 the 3rd pin also export high potential, refrigerator power is connected in relay J control J22 adhesive; Simultaneously, charge to C5, IC1 the 2nd, 6 pin current potentials are risen gradually by R3, R4, R5, D5 and W3, IC1 upset when rising to 8V, the 3rd pin output electronegative potential makes IC2 the 3rd pin also export electronegative potential, and relay J discharges J22 and disconnects, and cuts off refrigerator power.During IC1 the 3rd pin output electronegative potential, the 7th pin also is an electronegative potential, C5 is through K2-2, R6, D6 discharge, and when potential drop IC1 upset during to 4V, the 3rd pin is exported high potential again, repeat above-mentioned charge and discharge process, go round and begin again, control the refrigerator power break-make automatically, quantitatively power to refrigerator, reduce refrigerator to waste of electric energy, reached the purpose of economize on electricity.

Season, selector switch K2-1, K2-2 were linked switch, can need according to food reserves in Various Seasonal, indoor temperature, the case and use by the user, select suitable position, thereby change power-on time to refrigerator, wherein this switch to be placed position 1 winter, spring and autumn will place position 2, place position 3 summer, quick-frozen then places position 4, in fact in the time of should season, selector switch places diverse location, changed the charging resistor of C5, also just changed charging interval, thereby changed power-on time refrigerator to C5.Potentiometer W3 can change the indoor temperature of refrigerator refrigeration, and the resistance value of regulating W3 has also just changed the charging resistor of C5; W3 is continuously adjustable.Light emitting diode GD is a run indicator, represents refrigerator when lamp is bright in working order, is expressed as stopped status when lamp goes out.Light emitting diode RD is a power supply indicator, represents power connection when lamp is bright, represents the power supply access failure when lamp goes out.

Claims

1, a kind of refrigerator electricity-saving protection device, comprise direct current regulation circuit, superpressure under-voltage protecting circuit, economize on electricity control circuit and delay protection circuit, it is characterized in that described economize on electricity control circuit by relay, carry out time-controlled time base chip, RC charging and discharging circuit and diode that the time that discharges and recharges is adjustable are formed, comprise in the RC charging and discharging circuit that wherein but manual adjustment discharges and recharges resistance value to change the selector switch in season to the refrigerator power-on time, this RC charging and discharging circuit and time base chip link, the time base chip link by delay protection circuit and relay; The loop that a normal opened contact of relay is connected with the refrigerator power input is attempted by the alternating current input.

2, refrigerator electricity-saving protection device according to claim 1; it is characterized in that in the RC charging and discharging circuit in described economize on electricity control circuit; also comprise can regulating continuously for one discharging and recharging resistance value changing the potentiometer of temperature in the refrigerator, this potentiometer and season selector switch link.