CN1548906A

CN1548906A - Method for controlling forward or backward rotary compressor of electric refrigerator

Info

Publication number: CN1548906A
Application number: CNA031299164A
Authority: CN
Inventors: 高勇德
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 control method for forward/backward rotation compressor in refrigerator includes the following steps: sensing the temperature inside the refrigerator; comparing the sensed temperature with the user set temperature; making the compressor rotate in forward direction to increase refrigerating amount if the sensed temperature is higher than the set temperature; and making the compressor rotate in backward direction to decrease refrigerating amount if the sensed temperature is lower than the set temperature.

Description

Refrigerator just or the control method of contrary rotary compressor

Technical field

The present invention relates to a kind of refrigerator just or the control method (CLOCKWISE/COUNTERCLOCKWISE COMPRESSOR DRIVING CONTROL APPARATUS ANDMETHOD FOR REFRIGERATOR) of contrary rotary compressor, furtherly, then relate to a kind of by the excessive load in the perception refrigerator, corresponding excessive load compressor positive direction rotation, supply with fast a large amount of cold air with the refrigerator of quick corresponding load variations just or the control method of contrary rotary compressor.

Background technology

Generally speaking, the refrigerating circulation system that is applicable to refrigerator has following two kinds: the high refrigerating capacity circulatory system of cold air is provided and the low refrigerating capacity circulatory system of cold air is provided to refrigerating chamber to refrigerating chamber.

Above-mentioned high ability refrigerating capacity refrigerating circulation system or low ability refrigerating circulation system because the length of expansion gear is identical, can not embody the best freeze cycle with operation mode, with reference to the accompanying drawings prior art are elaborated.

Fig. 1 demonstrates the schematic drawing of the refrigerating circulation system of existing technology refrigerator, and as shown in the figure, the refrigerating circulation system of prior art refrigerator comprises as lower member: compressor 1, condenser 2, the first evaporimeter F-EVA, the second evaporimeter R-EVA.Above-mentioned compressor 1 sucks the low temperature of evaporimeter discharge, the refrigerant steam of low pressure compresses, and makes the refrigerant steam of high temperature, high pressure; Above-mentioned condenser 2 is discharged into the heat of the refrigerant steam of the high temperature of discharging from above-mentioned compressor 1, high pressure water or the air, again it is changed into the high pressure saturated solution; The high pressure saturated solution of discharging in the above-mentioned condenser 2 converts the refrigerant of low temperature, low pressure to by capillary 3, and the refrigerant that the above-mentioned first evaporimeter F-EVA sucks above-mentioned low temperature, low pressure makes its evaporation, and carries out heat exchange at refrigerating chamber, discharges chilled air; The high pressure saturated solution of discharging in the above-mentioned condenser 2 is by the refrigerant of 3 one-tenth low temperature of capillary, low pressure, and the refrigerant that the above-mentioned second evaporimeter R-EVA sucks above-mentioned low temperature, low pressure makes its evaporation, and carries out heat exchange at refrigerating chamber, discharges chilled air.

At first, freezing running, when also being the running of high refrigerating capacity, the refrigerant of the HTHP of compression in compressor 1, flow into condenser 2 condensations after, 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 the saturated vapor that does not have liquid is discharged to refrigerating chamber.

When low refrigerating capacity turned round when refrigerating running, the refrigerant of the HTHP of compression on compressor 1 after 2 condensations of inflow condenser, became the refrigerant of low-temp low-pressure through capillary 3.

Afterwards, the refrigerant that the second evaporimeter R-EVA sucks above-mentioned low-temp low-pressure evaporates, and carries out heat exchange at refrigerating chamber, discharges chilled air.

At this, the compressor that the refrigerating circulation system of above-mentioned refrigerator adopts is only to the positive direction rotation, therefore output high-power all the time.Under the temperature maintenance stable status in refrigerator, do not need big refrigerating capacity to make compressor positive direction rotation yet, make the refrigerating circulation system of refrigerator of this prior art exist the big problem of the electric consumption.

In order to address the above problem, a kind of technology has appearred, and on refrigerator, adopt according to the size of refrigerating capacity and can select positive direction or contrary direction rotation compressor, reduce power consumption.When refrigerator through certain duration of runs, when being perceived as stable state, the compressor inverse direction rotation produces amount of cooling water in a small amount, to reduce power consumption.

But there are the following problems for above-mentioned technical method: in order to keep the temperature that sets in the refrigerator, high frequent do positive rotation or contrary rotation, when therefore needing at a certain temperature causing contrary rotation, compressor is done dextrorotation then the problem that increases electric power and consume.

Summary of the invention

In order to solve the problem that exists in the above-mentioned technology, the object of the invention be to provide a kind of refrigerator with following effect just or the control method of contrary rotary compressor: the temperature in the refrigerator is that uniform temperature is when following, the compressor inverse direction rotation, temperature in the refrigerator is that uniform temperature is when above, the temperature that the user sets is kept in the rotation of compressor positive direction.

In order to realize aforesaid purpose, the invention provides a kind of by compressor just or contrary rotation keep the refrigerator of the temperature that sets in the refrigerator, its operation process is as follows: perception refrigerator temperature inside; The temperature of said sensed is compared with the temperature that the user sets, if the temperature in the above-mentioned refrigerator is design temperature when above, and compressor positive direction rotation increase refrigerating capacity; Temperature in the above-mentioned refrigerator is design temperature when following, compressor inverse direction rotation minimizing refrigerating capacity.

Effect of the present invention is: when the internal temperature of refrigerator when uniform temperature is following, compressor inverse direction rotation, the external temperature of refrigerator are when uniform temperature is above, and the compressor positive direction is rotated, thereby the realization minimum power consumption, the temperature in the accurate control refrigerator reaches the temperature that the user sets.

Description of drawings

Fig. 1 demonstrates the schematic drawing of the refrigerating circulation system of general refrigerator;

Fig. 2 demonstrate refrigerator of the present invention just or the action flow chart of the control method of contrary rotary compressor.

The specific embodiment

Below, the accompanying drawing with reference to one embodiment of the invention is described in detail as follows.

Fig. 2 demonstrate refrigerator of the present invention just or the action flow chart of the control method of contrary rotary compressor.As shown in the figure, compressor of the present invention just or against the running of rotating the refrigerator of keeping the temperature that sets in the refrigerator comprises following process: perception refrigerator temperature inside; The temperature of said sensed is compared with the temperature that the user sets, if the temperature in the above-mentioned refrigerator is design temperature when above, and compressor positive direction rotation increase refrigerating capacity; Temperature in the above-mentioned refrigerator is design temperature when following, compressor positive direction rotation minimizing refrigerating capacity.The present invention's running and effect with above-mentioned operation process are described in detail as follows.

At first, according to the operation mode that the user sets, after micro computer (microcomputer) 12 calculates cold air supply, just communicating information to or reverse rotation signal generator (step SP1).

At this moment, the environment temperature of refrigerator internal temperature sensor (SENSOR) perception is below 8 ℃ the time, and just above-mentioned or reverse rotation signal generator sends the control signal of control compressor inverse direction rotation, reduces refrigerating capacity and keeps the temperature that sets in the refrigerator; The environment temperature of refrigerator is more than 8 ℃ the time, and just above-mentioned or reverse rotation signal generator sends the control signal of control compressor positive direction rotation, increases amount of cooling water fast to keep the temperature that sets in the refrigerator.The aforesaid process of execution repeatedly (the step SP2～SP5), keep the temperature that sets in the refrigerator according to the refrigerator internal temperature of all period interval.

Above-mentioned 8 ℃ for judging that compressor just or the moving judgment standard temperature of contrary rotation.

Then, the close compressor when temperature in the above-mentioned refrigerator satisfies user's design temperature, when the temperature in the above-mentioned refrigerator did not satisfy user's design temperature, compressor was in on-state, carries out above-mentioned operation process (step SP6) repeatedly.

That is, among the present invention, the environment temperature in the refrigerator is the positive rotation compressor when both fixed temperature is more than 8 ℃, environment temperature in the refrigerator is come cool-air feed against rotary compressor when both fixed temperature is below 8 ℃, so, reduce electric power consumption, the accurate cold air control of carrying out refrigerator.

Claims

One kind by compressor just or contrary rotation keep the refrigerator of the temperature that sets in the refrigerator, it is characterized in that the operation process of compressor is:

Perception refrigerator temperature inside;

The temperature of said sensed is compared with the temperature that the user sets, if the temperature in the above-mentioned refrigerator is design temperature when above, and compressor positive direction rotation increase refrigerating capacity; Temperature in the above-mentioned refrigerator is design temperature when following, compressor inverse direction rotation minimizing refrigerating capacity.