CN1548905A

CN1548905A - Control method for positive/negative rotary compressor of electric refrigerator

Info

Publication number: CN1548905A
Application number: CNA031299156A
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 ambient temperature around the refrigerator, judging whether the ambient temperature to be over the set forward rotation temperature, and maintaining the compressor in forward rotation to maintain the temperature inside the refrigerator if the ambient temperature is over the set forward rotation temperature; making the compressor in backward rotation to maintain the temperature inside the refrigerator if the ambient temperature is below the set forward rotation temperature; turning off the compressor after the compressor rotates in forward or backward direction to make the temperature inside the refrigerator reach the user set temperature; and repeating the foregoing process if the temperature inside the refrigerator is higher than the user 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 external temperature compressor inverse direction rotation when uniform temperature is following when refrigerator, the external temperature of refrigerator when uniform temperature is above, thereby compressor positive direction rotation keep the temperature that the user sets refrigerator just, contrary rotary compressor method for controlling of operation.

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 said method: according to the internal temperature in the refrigerator, selection positive direction that above-mentioned compressor can only be single or contrary direction provide cold air, so can not critically control the temperature in the refrigerator.

Summary of the invention

The present invention designs in order to address the above problem, the object of the invention be to provide refrigerator with following effect just, contrary rotary compressor method for controlling of operation: when external temperature compressor inverse direction rotation when uniform temperature is following of refrigerator, the external temperature of refrigerator is when uniform temperature is above, thereby the temperature that the rotation of compressor positive direction can critically be controlled in the refrigerator reaches the temperature that the user sets.

In order to realize aforesaid purpose, compressor of the present invention just, the rotation of contrary direction makes the operation process of refrigerator of the temperature that the temperature maintenance in the refrigerator sets as follows: the temperature around the perception refrigerator, judge whether the temperature around the above-mentioned refrigerator is more than the positive rotation operating temperature that sets, if the phase I that the compressor positive direction selects to keep the interior temperature of refrigerator when to be the positive rotation operating temperature that sets above of the temperature around the above-mentioned refrigerator; Temperature around the above-mentioned refrigerator is the positive rotation operating temperature that sets when following, and compressor inverse direction selects to keep the second stage of the interior temperature of refrigerator; As mentioned above, compressor positive direction or the rotation of contrary direction, close compressor when making temperature in the refrigerator satisfy user's design temperature when the temperature in the above-mentioned refrigerator does not satisfy user's design temperature, repeats the phase III of said process.

Effect of the present invention is: when the external temperature of refrigerator when uniform temperature is following, the compressor inverse direction rotation, the external temperature of refrigerator is when uniform temperature is above, the rotation of compressor positive direction, thereby realize it being to make minimum power consumption, the temperature that can critically control in the 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 just or contrary rotation make the operation process of refrigerator of the temperature that the temperature maintenance in the refrigerator sets as follows: the phase I: the temperature around the perception refrigerator, judge whether the temperature around the above-mentioned refrigerator is more than the positive rotation operating temperature that sets, if the temperature around the above-mentioned refrigerator is when to be the positive rotation operating temperature that sets above, the compressor positive direction is rotated; Second stage: judge that temperature around the above-mentioned refrigerator is the positive rotation operating temperature that sets when following, the interior temperature of refrigerator is kept in the compressor inverse direction rotation; Phase III: compressor positive direction or contrary direction rotation, when making the interior temperature of refrigerator satisfy user's design temperature, close compressor when the temperature in the above-mentioned refrigerator does not reach user's design temperature, repeats said process.The present invention's running and effect with above-mentioned operation process are described in detail as follows.

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

At this moment, the environment temperature of refrigerator external temperature sensor (SENSOR) perception is below 43 ℃ the time, and just above-mentioned or reverse rotation signal generator sends the control signal of control compressor inverse direction rotation, reduces amount of cooling water and keeps the temperature that sets in the refrigerator; The environment temperature of refrigerator is more than 43 ℃ 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.The cycle compartment of terrain is carried out aforesaid process (step SP2～SP5), keep the temperature that sets in the refrigerator according to the refrigerator external temperature repeatedly.

Above-mentioned 43 ℃ for judging that compressor just or the judgment standard temperature whether moved of contrary rotation.

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

That is, among the present invention, the refrigerator environment temperature is when both fixed temperature is more than 43 ℃, positive rotation compressor, refrigerator environment temperature are when both fixed temperature is below 43 ℃, and contrary rotary compressor comes cool-air feed, so, reduce electric power consumption, critically carry out the cold air control of refrigerator.

Claims

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

Phase I: the temperature around the perception refrigerator, judge whether the temperature around the above-mentioned refrigerator is more than the positive rotation operating temperature that sets, if the temperature around above-mentioned refrigerator when to be the positive rotation operating temperature that sets above, the compressor positive direction is rotated;

Second stage: the temperature around the above-mentioned refrigerator is the positive rotation operating temperature that sets when following, and the interior temperature of refrigerator is kept in the compressor inverse direction rotation;

Phase III: compressor positive direction or the rotation of contrary direction, close compressor when making temperature in the refrigerator satisfy user's design temperature when the temperature in the above-mentioned refrigerator does not satisfy user's design temperature, repeats said process.