CN2101971U

CN2101971U - Electronic starter for refrigerator

Info

Publication number: CN2101971U
Application number: CN 91221356
Authority: CN
Inventors: 李功温
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-20
Filing date: 1991-07-20
Publication date: 1992-04-15

Abstract

The utility model relates to an electronic starter for a refrigerator, belonging to a starting device of the motor of the refrigerator. The electronic starter for a refrigerator is mainly composed of a power supply circuit, a rectification circuit, and a direct current relay. The starting winding of the motor is controlled by the direct current relay. The starting time of the starting winding of the motor is ensured by the charge and discharge characters of a capacitor. The danger that the running winding of the motor is energized for a long time, but the motor can not be normally started to be burned out is avoided in a zone with lower voltage. When network voltage is above 155v, the electronic starter for a refrigerator can be reliably started. The electronic starter for a refrigerator has simple structure, convenient installation, and reliable performance. The electronic starter for a refrigerator can be used for refrigerators with any types. The utility model is a more ideal starter for a refrigerator.

Description

Electronic starter for refrigerator

A kind of refrigerator electronic starter belongs to the refrigerator motor starting device, can replace with the refrigerator starter of any model.

Existing refrigerator starter, mainly be to utilize the current start device to control the startup winding of motor, this starter is for the lower area of line voltage with when the electricity consumption crest voltage is low, because voltage is low, electric current is little, makes the iron core magnetic force of current start device not reach, the contact can not well contact, the result makes the startup winding can not get sufficient start-up time, and the electric motor starting difficulty causes the operation winding current to increase, time has been grown the life-span that can influence motor, will cause the damage of motor when serious.

The purpose of this utility model is the problem at above existence, design a kind of electronic starter, this starter utilizes electronic line structure, the charge-discharge characteristic of electric capacity, startup winding by direct current relay control motor, thereby satisfy to start winding required start-up time, solve the current start device because the problem of the low electric motor starting difficulty of voltage.

The utility model is achieved in that this starter mainly is made up of power circuit, rectification circuit and driving relay, the operation winding A of current relay coil and motor joins, the break-make of its contact control transformer primary source, with electrochemical capacitor and direct current relay and connect, the startup winding B of motor is by the contact control of direct current relay behind bridge rectifier for transformer secondary output.

Accompanying drawing 1 is an electrical schematic diagram of the present utility model.

Below with reference to accompanying drawing the utility model is further described below:

As line voltage ∠ 180V, when being lower than the minimum of refrigerator electric motor starting, power connection drives the normally opened contact S of current relay S by the electric current of motor operation winding _1-1, have only the pickup time about 0.3, at this moment, electronic circuit is connected, and produces the 12V power supply after the transformation, behind bridge rectifier electrochemical capacitor C is dashed electricity, and direct current relay J gets its normally opened contact of electric drive J simultaneously _1-1Closure makes electric motor starting.The effect of capacitor makes the normally opened contact J of direct current relay _1-1Time-delay disconnects, and the time is 1-2 second, the start-up time of satisfying motor; When the motor entry into service, the electric current in the operation winding reduces the normally opened contact S of current relay S _1-1Restore, electronic circuit is not charged, and motor runs well.

This electronic starter is simple in structure, and is easy for installation, and general refrigerator starting resistor minimum is 180

, be lower than this value motor and all can not normally start, use this starter by test, line voltage is 155

-180

Between motor all can start rapidly, avoided the long-time energising of motor operation winding and phenomenon that motor can not start takes place, be a kind of comparatively desirable refrigerator motor starter.

Claims

1, a kind of refrigerator electronic starter, form by power circuit, rectification circuit and direct current relay, the break-make that it is characterized in that the contact control transformer primary source of the current relay that is in series with motor operation winding, transformer secondary output output behind bridge rectifier with electrochemical capacitor and direct current relay and connect the startup winding of the contact control motor of direct current relay.