CN202771281U

CN202771281U - Intermittent temperature controller of refrigerator

Info

Publication number: CN202771281U
Application number: CN 201220477421
Authority: CN
Inventors: 周芸
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-19
Filing date: 2012-09-19
Publication date: 2013-03-06
Anticipated expiration: 2022-09-19

Abstract

The utility model provides an intermittent temperature controller of a refrigerator. The controller is composed of a 220V alternating current power supply, a resistance-capacitance step down rectifying circuit, a 12V voltage regulator circuit, an intermittent oscillating circuit, an intermittent time regulation circuit, a level power amplification and relay control circuit and a refrigerator working condition indication circuit. The controller is characterized in that the model number of a binary serial counting integrated circuit IC1 in the intermittent oscillating circuit is CD4060. In some refrigerators, poor performance of the temperature controller or little leakage of the refrigerating fluid in a refrigeration system may cause the faults, such as continuous working. Such fault has the hazards that the refrigerator compressor is fatigue and damaged completely for the reason of continuous working, continuous working of the compressor causes waste of power, and fire hazards exist in power utilization of the refrigerator. The intermittent temperature controller of the refrigerator solves the problems in above aspects better without changing the original circuit structure of the inside of the refrigerator, and realizes the aim of effectively guaranteeing safe power utilization and prolonging the service life of the compressor.

Description

The refrigerator intermittent temperature controller

Technical field

The utility model belongs to electronics and temperature control technology field, relates to a kind of refrigerator intermittent temperature controller.

Background technology

All carry temperature controller in the casing of refrigerator, new refrigerator was through the use in several years, and the refrigerator that has can not shut down because the temperature controller poor performance causes compressor, and perhaps cold-producing medium such as has slight leakage also can cause not shut down at the fault in the refrigerator refrigeration system.Although this type of fault is on using impact not too large, such as untimely processing, its harm mainly contains: the one, and the freezer compressor long-term operation is not shut down and is made its fatigue and thorough the damage; The 2nd, compressor is not shut down for a long time can cause unnecessary power wastage; The 3rd, there is disaster hidden-trouble in the refrigerator electricity consumption.Because the volume of refrigerator, weight are all larger, so being inconvenient to bring up to move down, the user in time goes maintenance.

In order to address the above problem, the utility model does not change under the prerequisite of the original circuit structure of refrigerator inside, has well solved above-mentioned several respects problem, effective guarantee safety utilization of electric power and prolong the freezer compressor purpose in serviceable life.

Below describe refrigerator intermittent temperature controller described in the utility model related correlation technique content in implementation process in detail.

The utility model content

Goal of the invention and beneficial effect: all carry temperature controller in the casing of refrigerator; the use in several years of new refrigerator process; the refrigerator that has can not shut down because the temperature controller poor performance causes compressor, and perhaps cold-producing medium such as has slight leakage also can cause not shut down at the fault in the refrigerator refrigeration system.Although this type of fault is on using impact not too large, such as untimely processing, its harm mainly contains: the one, and the freezer compressor long-term operation is not shut down and is made its fatigue and thorough the damage; The 2nd, compressor is not shut down for a long time can cause unnecessary power wastage; The 3rd, there is disaster hidden-trouble in the refrigerator electricity consumption.In order to address the above problem, the utility model does not change under the prerequisite of the original circuit structure of refrigerator inside, has well solved above-mentioned several respects problem, effective guarantee safety utilization of electric power and prolong the freezer compressor purpose in serviceable life.

The circuit working principle: the 220V AC power is through decompression capacitor C4 and bleeder resistance R6 step-down current limliting, by silicon rectifier diode D2 half-wave rectification, obtain the required 12V stabilized voltage supply of temperature controller circuit working through voltage stabilizing diode DW voltage stabilizing and electrochemical capacitor C3 filtering again.

The 10th pin of scale-of-two serial counting circuit IC1 in the intermittent oscillation circuit, the fixed resistance that the 11st pin respectively meets 1 110k Ω, the linear potentiometer of 1 2.2M Ω of adjunction between two fixed resistances.The resistance of these several resistance should be determined according to the debugging situation.The high level of the 1st pin output of scale-of-two serial counting circuit IC1, high level carries out power amplification by resistance R 1 by NPN transistor VT1, drives at last DC relay J work, and the normally opened contact J-1 of DC relay J connects refrigerator supply socket CZ.

The sending and receiving optical diode LED of the 7th pin institute of scale-of-two serial counting circuit IC1 is working state indicating circuit, and it can indicate refrigerator energising or powering-off state.

Technical characterictic: refrigerator intermittent temperature controller, it is comprised of 220V AC power, resistance-capacitance depressurization rectification circuit, 12V mu balanced circuit, intermittent oscillation circuit, quiescent interval regulating circuit, level power amplification and control relay circuit and refrigerator work condition indication circuit, and its feature comprises:

Resistance-capacitance depressurization rectification circuit: formed by decompression capacitor C4, bleeder resistance R6, silicon rectifier diode D2, the live wire end L of the termination 220V AC power of the end of decompression capacitor C4 and bleeder resistance R6, the other end of the other end of decompression capacitor C4 and bleeder resistance R6 links to each other with the positive pole of silicon rectifier diode D2, and the negative pole of silicon rectifier diode D2 connects the 12V mu balanced circuit;

The 12V mu balanced circuit: be comprised of voltage stabilizing diode DW, electrochemical capacitor C3, the negative pole of stabilivolt diode DW and the positive pole of electrochemical capacitor C3 connect the negative pole of silicon rectifier diode D2, the negative pole connection circuit ground GND of the positive pole of stabilivolt diode DW and electrochemical capacitor C3;

Intermittent oscillation circuit: formed by scale-of-two serial counting circuit IC1, capacitor C 1, resistance R 2, the model that scale-of-two serial counting circuit IC1 adopts is CD4060, the 12nd pin of scale-of-two serial counting circuit IC1 connects an end of capacitor C 1 and an end of resistance R 2, the anodal VCC of the 16th pin of scale-of-two serial counting circuit IC1 and the other end connection circuit of capacitor C 1, the 8th pin of scale-of-two serial counting circuit IC1 and the other end connection circuit ground GND of resistance R 2;

Quiescent interval regulating circuit: formed by scale-of-two serial counting circuit IC1, capacitor C 2, resistance R 3, resistance R 4 and linear potentiometer RP, the 9th pin, the 10th pin, the 11st pin of scale-of-two serial counting circuit IC1 connects respectively an end of capacitor C 2, an end of resistance R 3, an end of resistance R 4, the end of the other end wiring potentiometer RP of resistance R 3, the lever arm of the other end wiring potentiometer RP of capacitor C 2, the other end of the other end wiring potentiometer RP of resistance R 4;

Level power is amplified and control relay circuit: by NPN transistor VT1; resistance R 1; DC relay J; protection diode D1 and refrigerator supply socket CZ form; the 1st pin of scale-of-two serial counting circuit IC1 connects the base stage of NPN transistor VT1 by resistance R 1; the collector of NPN transistor VT1 connects an end of DC relay J coil and the positive pole of protection diode D1; the other end of DC relay J coil links to each other with circuit anode VCC with the negative pole of protection diode D1; the emitter connection circuit ground GND of NPN transistor VT1; the stationary contact of the normally opened contact J-1 of the termination DC relay J of refrigerator supply socket CZ; the moving contact of DC relay J normally opened contact J-1 meets the live wire end L of 220V AC power; the zero line side N of another termination 220V AC power of refrigerator supply socket CZ, the zero line side N of 220V AC power links to each other with circuit ground GND.

The refrigerator work condition indication circuit: be comprised of LED and dropping resistor R5, the 7th pin of scale-of-two serial counting circuit IC1 is by the positive pole of dropping resistor R5 sending and receiving optical diode LED, the negative pole circuit ground GND of LED.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram of refrigerator intermittent temperature controller; Accompanying drawing 1 DC relay J has 5 pin, wherein: 2 pin of the coil of relay, power stage has 3 pin, and 3 pin form respectively normally opened contact and normally closed contact, and J-1 is the normally opened contact of relay J in the accompanying drawing.

Embodiment

Technical requirement according to circuit working schematic diagram shown in the accompanying drawing 1 and description of drawings and the following stated is implemented, and can realize the utility model.

Components and parts are selected and technical parameter

IC1 is scale-of-two serial counting circuit, and the model of employing is CD4060 or HEF4060, and IC1 is dual inline type 16 pin, packing forms DIP;

DW is voltage stabilizing diode, 12V/1W; LED is ￠ 5 red light emitting diodes;

D1 is the protection diode, and D2 is silicon rectifier diode, and the model of employing is 1N4007;

The resistance of resistance R 1 is 6.8k Ω; The resistance of resistance R 2～R4 is 110k Ω; The resistance of dropping resistor R5 is 1.6k Ω; R6 is bleeder resistance, and its resistance is that 680k Ω, power are 2W;

RP is linear potentiometer, and its resistance is 2.2M Ω;

The capacity of capacitor C 1 is 0.015 μ F; The capacity of capacitor C 2 is 0.33 μ F; Electrochemical capacitor C3 is filter capacitor, and capacity is 1000 μ F/25V; C4 is decompression capacitor, and capacity is 0.68 μ F/450V;

CZ is the supply socket of refrigerator, and the technical parameter of supply socket is 10A/250V.

Circuit production main points and circuit debugging

According to the circuit working schematic diagram shown in the accompanying drawing 1, welding correctness and the welding quality of whole components and parts in the check circuit, it is intact to need only generally speaking element quality, and the circuit welding is errorless, and the refrigerator intermittent temperature controller connects the 220V AC power and can work;

According to the connection of components and parts on the circuit working schematic diagram in the accompanying drawing 1, require DC relay J to use normally opened contact, can effectively stop like this 220V AC power and then restore electricity rapidly again in suddenly power failure, cause easily the fault of freezer compressor stall;

Technical parameter according to above-mentioned components and parts, the circuit timing operation of refrigerator intermittent temperature controller is 24 minutes with the T.T. of regularly shutting down, and just can be regularly to shut down timing operation 18 minutes 6 minutes, perhaps be adjusted into regularly and shut down timing operation 6 minutes 18 minutes; Within T.T., can the combination in any timing operation and the time of regularly shutting down;

The refrigerator intermittent temperature controller in use should be according to the temperature variation of Various Seasonal, and suitably the resistance of linear adjustment potentiometer RP makes the interior maximum temperature of refrigerator cold-storage case and minimum temperature be controlled at 4～7 ℃.

Claims

1. refrigerator intermittent temperature controller, it is comprised of 220V AC power, resistance-capacitance depressurization rectification circuit, 12V mu balanced circuit, intermittent oscillation circuit, quiescent interval regulating circuit, level power amplification and control relay circuit and refrigerator work condition indication circuit, and its feature comprises:

Described resistance-capacitance depressurization rectification circuit is comprised of decompression capacitor C4, bleeder resistance R6, silicon rectifier diode D2, the live wire end L of the termination 220V AC power of the end of decompression capacitor C4 and bleeder resistance R6, the other end of the other end of decompression capacitor C4 and bleeder resistance R6 links to each other with the positive pole of silicon rectifier diode D2, and the negative pole of silicon rectifier diode D2 connects the 12V mu balanced circuit;

Described 12V mu balanced circuit is comprised of voltage stabilizing diode DW, electrochemical capacitor C3, the negative pole of stabilivolt diode DW and the positive pole of electrochemical capacitor C3 connect the negative pole of silicon rectifier diode D2, the negative pole connection circuit ground GND of the positive pole of stabilivolt diode DW and electrochemical capacitor C3;

Described intermittent oscillation circuit is comprised of scale-of-two serial counting circuit IC1, capacitor C 1, resistance R 2, the model that scale-of-two serial counting circuit IC1 adopts is CD4060, the 12nd pin of scale-of-two serial counting circuit IC1 connects an end of capacitor C 1 and an end of resistance R 2, the anodal VCC of the 16th pin of scale-of-two serial counting circuit IC1 and the other end connection circuit of capacitor C 1, the 8th pin of scale-of-two serial counting circuit IC1 and the other end connection circuit ground GND of resistance R 2;

Described quiescent interval regulating circuit is comprised of scale-of-two serial counting circuit IC1, capacitor C 2, resistance R 3, resistance R 4 and linear potentiometer RP, the 9th pin, the 10th pin, the 11st pin of scale-of-two serial counting circuit IC1 connects respectively an end of capacitor C 2, an end of resistance R 3, an end of resistance R 4, the end of the other end wiring potentiometer RP of resistance R 3, the lever arm of the other end wiring potentiometer RP of capacitor C 2, the other end of the other end wiring potentiometer RP of resistance R 4;

Described level power amplification and control relay circuit are by NPN transistor VT1; resistance R 1; DC relay J; protection diode D1 and refrigerator supply socket CZ form; the 1st pin of scale-of-two serial counting circuit IC1 connects the base stage of NPN transistor VT1 by resistance R 1; the collector of NPN transistor VT1 connects an end of DC relay J coil and the positive pole of protection diode D1; the other end of DC relay J coil links to each other with circuit anode VCC with the negative pole of protection diode D1; the emitter connection circuit ground GND of NPN transistor VT1; the stationary contact of the normally opened contact J-1 of the termination DC relay J of refrigerator supply socket CZ; the moving contact of DC relay J normally opened contact J-1 meets the live wire end L of 220V AC power; the zero line side N of another termination 220V AC power of refrigerator supply socket CZ, the zero line side N of 220V AC power links to each other with circuit ground GND.

2. described refrigerator intermittent temperature controller according to claim 1, it is characterized in that: the refrigerator work condition indication circuit is comprised of LED and dropping resistor R5, the 7th pin of scale-of-two serial counting circuit IC1 is by the positive pole of dropping resistor R5 sending and receiving optical diode LED, the negative pole circuit ground GND of LED.