CN1548898A

CN1548898A - Method for controlling running of forward or backward rotary compressor of refrigerator

Info

Publication number: CN1548898A
Application number: CNA031299008A
Authority: CN
Inventors: 金道亨
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2003-05-22
Filing date: 2003-05-22
Publication date: 2004-11-24

Abstract

The present invention relates to forward and backward rotation control method of compressor in refrigerator. In starting the compressor after defrosting, the compressor is made to forward rotate to provide great amount of cold air for fast cooling food without decay. Compressor capable of rotating in both forward and backward direction is selected, so that the user can select refrigerator operation mode. The operation process of refrigerator includes the following steps: repeated backward rotation and stopping of the compressor; sensing the temperature inside the refrigerator and defrosting when the sensed temperature reaches the defrosting temperature; rotating the compressor in forward direction after finishing defrosting step; and rotating the compressor in backward direction and repeated operation and stopping.

Description

Refrigerator just, contrary rotary compressor method for controlling of operation

Technical field

The present invention relates to a kind of refrigerator just, contrary rotary compressor method for controlling of operation (clockwise, counterclockwise compressor driving control method forrefrigerator), particularly, relating to a kind of compressor of refrigerator that makes when the initial start-up of defrosting running back provides a large amount of cold air with the positive rotation running with this, thus cool off rapidly the indoor temperature of refrigerator prevent food the refrigerator that addles just, contrary rotary compressor method for controlling of operation.

Background technology

Generally, the refrigeration system of refrigerator can be divided into to refrigerating chamber provides the high cold power system of cold air and the low cold power system of cold air is provided to refrigerating chamber.

Fig. 1 is the schematic drawing that shows the refrigeration system of general refrigerator, and as shown in the figure, this refrigeration system comprises: compressor 1, the low temperature that flows out from evaporimeter, the refrigerant steam of low pressure are compressed, and convert the steam of high temperature, high pressure to; Condenser 2, the heat of the high temperature that will emit from compressor 1, the refrigerant steam of high pressure is emitted to water or air, changes into the saturated solution of high pressure; Capillary 3, the saturated solution of the high pressure that will flow out from above-mentioned condenser 2 converts the refrigerant of low temperature, low pressure to; The first evaporimeter F-EVA carries out heat exchange at refrigerating chamber, the air of discharge temperature step-down; The second evaporimeter R-EVA carries out heat exchange at refrigerating chamber, the air that discharge temperature cools off.

At first, during freezing running, when also being the running of high cold power system, after the refrigerant of the HTHP in compressor 1 after the compression flows into condenser 2 condensations, become the refrigerant of low-temp low-pressure through capillary 3.

Then, the refrigerant that the first evaporimeter F-EVA sucks above-mentioned low-temp low-pressure evaporates, and discharges the saturated vapor that does not have liquid to divide to refrigerating chamber.

When running refrigeration, the running of low cold power system, the refrigerant of the HTHP in compressor 1 after the compression, flow into condenser 2 condensations after, become the refrigerant of low-temp low-pressure through capillary 3.

Afterwards, the refrigerant that the 2nd evaporimeter R-EVA sucks above-mentioned low-temp low-pressure evaporates, and carries out heat exchange at refrigerating chamber, the air of discharge temperature step-down.

At this, the compressor that adopts in the refrigeration system of above-mentioned refrigerator is only positive direction rotation, therefore power output height all the time, thereby, during temperature maintenance stable status in refrigerator, under the situation that does not need big cold power, the running of compressor positive rotation exists increases the big problem of the electric consumption.

In order to address the above problem, on refrigerator, adopt according to the size of cold power and carry out positive direction or produce cold power against the direction rotation compressor, for this reason, take temperature from reducing electric consumption, when compressor reaches stable state, adopt the method for contrary direction drive compression machine to make its power reduction, reduce the electric consumption.

But, in the said method, promptly carry out in positive direction or the backward driving process according to the size of cold power, when the defrosting of the white liquid in refrigerator is removed in execution is turned round, because of the temperature in the defrosting running refrigerator raises, when making compressor inverse rotation running then, the temperature in the refrigerator reaches the process need more time of design temperature, therefore, there are the interior problems such as food spoilage of refrigerator.

Summary of the invention

The present invention designs in order to address the above problem, when the object of the invention is to provide a kind of defrosting running back just to start, the compressor that makes refrigerator provides big cold air with the positive rotation running with this, so rapidly the temperature in the cooling chamber prevent food the refrigerator that addles just, contrary rotary compressor method for controlling of operation.

The present invention to achieve these goals, employing can be just, the refrigerator of contrary rotation compressor, by the operation mode that the user selects refrigerator, carry out following operation process: make that freezer compressor is contrary to be rotated, and first process that turns round repeatedly and stop; If the temperature that the perception refrigerator is indoor, its sense temperature be consistent with the defrosting temperature, then the 2nd process of defrosting running; When finishing above-mentioned defrosting running, make the compressor positive rotation starting operation of refrigerator after, make the compressor inverse rotation of refrigerator, and the 3rd process that turns round repeatedly and stop.

Effect of the present invention is: the defrosting running, and the temperature in the refrigerator raises, after the defrosting running, after positive rotation running freezer compressor is supplied with a large amount of cold air during starting just, contrary rotation is turned round and is stopped freezer compressor, and then reduces the indoor temperature of refrigerator rapidly after the defrosting, prevents food spoilage.

Description of drawings

Fig. 1 is the schematic drawing that shows the refrigeration system of general refrigerator;

Fig. 2 be for refrigerator of the present invention just, the action flow chart of contrary rotary compressor method for controlling of operation.

The specific embodiment

Describe in detail with reference to the accompanying drawings for refrigerator of the present invention just, the effect and the effect of contrary rotary compressor method for controlling of operation.

As shown in the figure, the selection refrigerator operation mode by the user comprises: make the contrary rotation of freezer compressor, and turn round repeatedly and first process that stops (SP1, SP2); If the temperature that the perception refrigerator is indoor, its sense temperature be consistent with the defrosting temperature, then the 2nd process of defrosting running (SP3, SP4); When finishing above-mentioned defrosting running, make the compressor positive rotation starting operation of refrigerator after, make the compressor inverse rotation of refrigerator, and turn round repeatedly and the 3rd process that stops (SP5, SP6).

At first, when selecting the refrigerator operation mode by the user, the refrigerator start of run, compressor dextrorotation, with big cold power operation, and then the temperature that reduces rapidly in the refrigerator arrives design temperature; Thereafter in the running, little cold power takes place in contrary direction rotary compressor, so for continue to keep state in the refrigerator with the some cycles be running repeatedly at interval (SP1, SP2).

Afterwards, according to the temperature sensor that is provided with in the refrigerator, the temperature in the perception refrigerator, if temperature is consistent with the defrosting temperature in the refrigerator, the running that then defrosts (SP3, SP4).

Afterwards, when finishing above-mentioned defrosting running (SP5), positive rotation starting operation freezer compressor (SP6), come temperature in the rapid decline refrigerator behind design temperature by defrosting running, after running in, contrary direction rotary compressor, some cycles is carried out repeatedly at interval, and then continues to keep the state (SP7) in the refrigerator.

In addition, the effect that the present invention reaches is: after the defrosting running of refrigerator, after temperature in the refrigerator is elevated to uniform temperature, be reduced to design temperature rapidly, after finishing the defrosting running, big cold power takes place in the positive direction rotary compressor when just turning round, and the temperature in refrigerator drops under the state of certain design temperature, contrary direction is with interval some cycles running above-mentioned compressor, and then continues to keep the state in the existing refrigerator.

Claims

1, a kind of refrigerator just, contrary rotary compressor method for controlling of operation, it is characterized in that select the operation mode of refrigerator by the user, the control step comprises:

Make the contrary rotation of freezer compressor, and first process that turns round repeatedly and stop;

If the temperature that the perception refrigerator is indoor, its sense temperature be consistent with the defrosting temperature, then the 2nd process of defrosting running;

When finishing above-mentioned defrosting running, make the compressor positive rotation starting operation of refrigerator after, make the compressor inverse rotation of refrigerator again, and the 3rd process that turns round repeatedly and stop.