CN2156449Y

CN2156449Y - Electricity saving device for refrigerator

Info

Publication number: CN2156449Y
Application number: CN 93227822
Authority: CN
Inventors: 刁永谦
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-05
Filing date: 1993-04-05
Publication date: 1994-02-16
Anticipated expiration: 2003-04-05

Abstract

The utility model provides an electricity saving device for a refrigerator, which is connected to form by a sampling circuit, an automatic control circuit, a time delay circuit, an executive circuit and a DC power supply circuit. The utility model can enlarge the time ratio of opening and closing machines of the refrigerator. The time of opening machines is far less than the time of closing machines. On the precondition of not influencing storage foods, on one hand the electric power is saved, on the other hand the frequency of opening and stopping machines of a compressor is reduced. The unit running time of the compressor is reduced. Therefore, the service life of the refrigerator is prolonged.

Description

Electricity saving device for refrigerator

The utility model relates to a kind of battery saving arrangement, especially a kind of refrigerator electricity-saving appliance.

At present; its temperature controller of refrigerator that China produces all is to control the operation of compressor for refrigeration and stop by measuring the highest and minimum temperature in the refrigerator; i.e. opening by refrigerator; recently controlling refrigerator downtime maintains in certain temperature range; general refrigerator is opened; the time ratio of shutting down is 1:2～3; but; if want according to different seasons; different environment temperatures and the different food species of being stored; opening of appropriate change compressor for refrigeration; down time ratio; with energy savings, existing refrigerator temperature controller then can't be realized.

But the purpose of this utility model provides a kind of using electricity wisely and prolongs the refrigerator refrigerator electricity-saving appliance in service life.

Technical solution of the present utility model is: a kind of refrigerator electricity-saving appliance, it is characterized in that: be provided with sample circuit ［ 1 ］, be connected to automatic control circuit ［ 2 ］ with sample circuit ［ 1 ］, be connected to delay circuit ［ 3 ］ and executive circuit ［ 4 ］ with automatic control circuit ［ 2 ］, delay circuit ［ 3 ］ joins with executive circuit ［ 4 ］ again, and DC power supply circuit ［ 5 ］ joins with delay circuit ［ 3 ］ and executive circuit ［ 4 ］ respectively.

The utility model is compared with prior art; owing to can suitably increase the opening of refrigerator, down time ratio; available machine time is much smaller than downtime; do not influencing under the prerequisite that hoards food; saved electric power on the one hand; that has reduced compressor on the other hand opens, shuts down number of times, has reduced the unit running time of compressor, thereby has prolonged the service life of refrigerator.

Accompanying drawing 1 is the block diagram of the utility model embodiment.

Accompanying drawing 2 is the circuit theory diagrams of the utility model embodiment.

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1, be connected to automatic control circuit ［ 2 ］ with sample circuit ［ 1 ］, be connected to delay circuit ［ 3 ］ and executive circuit ［ 4 ］ with automatic control circuit ［ 2 ］, delay circuit ［ 3 ］ joins with executive circuit ［ 4 ］ again, and DC power supply circuit ［ 5 ］ joins with delay circuit ［ 3 ］ and executive circuit ［ 4 ］ respectively.

As shown in Figure 2, sample circuit 1 is joined and is formed by sample resistance R12, diode D2, capacitor C 2.

Automatic control circuit 2 is joined and is formed by triode BG1, BG5, resistance R 2, R7, capacitor C 3, C4.

Delay circuit 3 is by triode BG3, BG4, BG6, and voltage-stabiliser tube DW1, resistance R 3, R4, R5, R6, R8, R9, R10, variable resistor R11, capacitor C 5, diode D1 join and form.

Executive circuit 4 is joined and is formed by triode BG2, capacitor C 1, C7, resistance R 1, relay J and normally opened contact J1-1, J1-2, normally-closed contact J1-3.

DC power supply circuit 5 is joined by transformer B1, dead resistance D3～D6, resistance R 13, capacitor C 6 and voltage-stabiliser tube DW2 and forms.

Operation principle: when A, B two ends input 220V alternating voltage, power supply powers to refrigerator by normally-closed contact J1-3, the sample resistance R12 of relay J, when the refrigerator running refrigerating, sample resistance R12 two ends produce the voltage drop about 2V, behind diode D2, capacitor C 7 rectifying and wave-filterings, add to the base stage of triode BG1, BG5, it is satisfied close conducting, BG2 cutoff relay J release this moment, capacitor C 4 are through the BG5 discharge, and delay circuit is not-time.

When refrigerator moves to predetermined temperature, the dynamo-electric source of refrigerator temperature controllers action compresses is cut off, sample resistance R12 voltage drop disappears, and triode BG1, BG5 end by satisfying with closing to become, and triode BG2 is by closing by becoming to satisfy, relay J adhesive this moment, normally-closed contact J1-3 disconnects, and the power supply that leads to refrigerator is cut off, and contact J1-1 disconnects, normally opened contact J1-2 closure makes BG2 end by satisfying with closing to become.Relay coil is kept adhesive by current-limiting resistance R3, R5, delay circuit is started working, make delay time conform to predetermined requirement by adjusting R11, after time-delay arrives preset time, unijunction transistor BG3 conducting discharge descends the relay coil terminal voltage, and relay discharges, normally-closed contact J1-3 closure, connect power supply, refrigerator begins running refrigerating for the second time.So controlling the startup-shutdown time ratio of compressor for refrigeration repeatedly.

Claims

1, a kind of refrigerator electricity-saving appliance, it is characterized in that: be provided with sample circuit [1], be connected to automatic control circuit [2] with sample circuit [1], be connected to delay circuit [3] and executive circuit [4] with automatic control circuit [2], delay circuit [3] joins with executive circuit [4] again, and DC power supply circuit [5] joins with delay circuit [3] and executive circuit [4] respectively.