CN86201116U

CN86201116U - Self-regulation voltage protector of refrigerator

Info

Publication number: CN86201116U
Application number: CN 86201116
Authority: CN
Inventors: 丁志津
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-03-04
Filing date: 1986-03-04
Publication date: 1987-06-10

Abstract

The utility model discloses a self-regulation voltage alarm device of refrigerator used for the automatic adjustment and the protection of the power supply voltage of the single-phase source of refrigerator, window type air conditioner, etc. The self-regulation voltage protector is the development of the patent of number 85200443, which uses the standard SG215-84 of light industry department as basis; apart from having the advantages of the patent of number 85200443, the self-regulation voltage protector can also be automatically adjusted to the voltage which meets the specification when the mains supply electric voltage is higher than or lower than the standard specification. When the voltage meets the specification, the voltage is directly transmitted into the refrigerator without transformer, and thereby, the magnetization current is saved, the alarm time is reduced, and the life of the partial elements of the refrigerator is lengthened. The utility model has the function of alarm and prefiguration, which provides convenience for adjusting the alarm action time.

Description

Self-regulation voltage protector of refrigerator

The utility model is used for the adjustment and the protection of single phase poaer supply supply voltages such as refrigerator, window air conditioner.

The utility model is the development of No. 85200443 patent of the People's Republic of China (PRC), and this patent has following circuit:

1, postpone to cut off the power supply circuits of hermetic compressor winding (2) (hereinafter to be referred as winding):

According to the standard code of SG215-84 household electric refrigerator: starting ability test: during 32 ℃ ± 1 ℃ starting of environment temperature, every energising once allows overcurrent protection tripping secondary.

As shown in drawings: a current potential that is bordering on line voltage can be arranged at the elementary two ends of B1 after temperature overcurrent protection (1) (hereinafter to be referred as this device) tripping; the B1 secondary voltage through rectification after R3 charge to C2; C2 two ends current potential raises and makes the BG1 conducting; J1 adhesive J1-1 closure; make the J2 adhesive; closed and the self-sustaining of J2-1, J2-2, J2-3 disconnect, and reach to stop the effect of powering to winding behind this device tripping secondary.

2, warning and delayed management circuit:

After the J2 adhesive, LED1 sends alarm signal, and civil power charges to C3 through R7 after B2 and D5-8 rectification, and the C3 current potential raises, BG2 conducting J3 adhesive, and J3-1 disconnects J2 is resetted, and makes winding (2) starting of switching on once more.

3, warning memory circuit:

After the J3 adhesive, J3-2 triggers controllable silicon SCR 1 and makes LED2 luminous continuously, and keeps conducting, plays the warning memory effect, only presses AN1 and eliminates the memory of reporting to the police.

4, self-checking circuit:

When K switch 1 is removed the K1-A side, civil power is inserted B1 replace alarm signal voltage, finish the effect that function course such as protection, warning memory reach self check.

The utility model has also remedied its weak point and has been except that the characteristics that possessed this patent:

1, this patent is only sent signal to the highest minimum operating voltage that reaches the standard code of SG215-84 household electric refrigerator; just protect winding and stop power supply; though can protect winding like this but can not adjust to supply voltage; this is bigger to the regional refrigerator storage temperature fluctuation that mains ripple greatly often can not reach standard-required, and influences the chilled goods quality.

2, this patent is only stipulated being above standard to cut off the electricity supply after this device tripping for several times and is sent warning, but not indication during each tripping, thereby comparatively difficult to the time of adjusting the protection action.

The drawing explanation:

Accompanying drawing is a refrigerator automatic Regulation protector circuit diagram.

It among the figure basic circuit of No. 85200443 patents.A is a heating wire among the figure; B is the bimetal leaf that the contact is arranged; 1 is the electric current overtemperature protection system; 2 is the hermetic compressor winding; D1-8 is a diode; DW1-12 is a Zener diode, and BG1-2 is a transistor, and R1-11 is a resistor; C1-12 is a capacitor; LED1-11 is a light emitting diode, and AN1 is a press button, and K1 is a double-point double-throw switch; K1-A is its contact; J1-12 is a relay, J1-1; J2-1; J2-2; J2-3; J3-1; J3-2; J11-1; J11-2; J12-1; J12-2 is respectively relay J 1; J2; J3; J11; the contact of J12, SCR1-12 is a controllable silicon.

The utility model has adopted following circuit:

1, voltage-regulating circuit:

SG215-84 household electric refrigerator standard 22C item regulation supply voltage scope is the 180-240 volt.

As shown in the figure: after circuit is connected, one current potential that changes with line voltage is arranged after the dividing potential drop sampling at W11, W12 two ends, when this voltage reaches the voltage stabilizing value of voltage-stabiliser tube DW11, DW12, controllable silicon SCR 11, SCR12 conducting, J11, J12 adhesive, J11 is the lower voltage limit relay, and J12 is the upper voltage limit relay.

When civil power is lower than assigned voltage, J11, all not adhesives of J12, the power supply of refrigerator is supplied with B3 with magnetizing current through J11-2 normally-closed contact and J12-1, J11-1 normally-closed contact, transports to refrigerator after N2 and J12-2 normally-closed contact boost.

When civil power value up to specification, J11 adhesive J12 adhesive, power supply is through the J11-2 normally opened contact, and J12-1 is normally closed directly to transport to refrigerator with the J11-1 normally opened contact without transformer B3.

When civil power is higher than setting, J11, all not adhesives of J12, power supply is supplied with B3 with magnetizing current through J12-1 and J12-2 normally opened contact, transports to refrigerator after N1 and the step-down of J11-2 normally opened contact.

2, warning is given and is shown circuit:

When the current protective device tripping of refrigerator, at R11 and LED11 two ends one electricity is arranged The position makes LED11 send the light signal, and reaching reports to the police gives the effect of showing.

The utility model advantage:

1, cuts off the power supply of winding except the delay that possesses No. 85200443 patents, report to the police and delayed management, outside the functions such as memory and self check, can also be when line voltage be higher or lower than regulation, automatically be adjusted into voltage up to specification and supply with refrigerator, so can make refrigerator in the bigger area normal operation of mains ripple, improve the refrigeration quality, also can prolong the life-span of refrigerator subelement.

2, at most areas, supply voltage time up to specification is necessarily greater than the against regulation time, because of this automatic circuit transformer B3 no power when up to specification, so a large amount of saves energy and reduce caloric value.

3, circuit is simple and reliable, highly versatile, can use transistor, switching tube, integrated circuit, thyratron, voltage-stabiliser tube or voltage relay to replace such as controllable silicon SCR 11, SCR12, thereby transformer B3 can be that auto-transformer, inductance transformer are for producing the sharp condition that provides.

Claims

1, a kind of refrigerator automatic Regulation protector, it comprises by BG ₁J ₁The power supply circuits of winding are cut off in the delay of forming, and BG ₂J ₂J ₃Warning and the delayed management circuit formed are with LED ₂SCR ₁The warning memory circuit of forming is characterized in that:

A, voltage automatic circuit are mainly by SCR ₁₁SCR ₁₂With B ₃Constitute SCR when civil power forces down in standard code ₁₁SCR ₁₂Equal not conducting B ₃Boost SCR when civil power meets standard code ₁₁Conducting SCR ₁₂Not conducting is without B ₃Directly output, SCR when city's voltage is higher than standard code ₁₁SCR ₁₂Equal conducting B ₃Export after the step-down,

B, warning are given and are shown circuit, it is characterized in that increasing R again at this circuit ₁₁LED ₁₁The warning that is constituted is given and is shown circuit.

2, according to the automatic Regulation protector of claim 1, it is characterized in that controllable silicon SCR ₁₁SCR ₁₂Be controllable silicon, thyratron, transistor, switching tube, integrated circuit, voltage-stabiliser tube or voltage relay.

3, the automatic Regulation protector according to claim 1 or 2 is characterized in that transformer B ₃Be auto-transformer, inductance transformer.