CN1548904A

CN1548904A - Method for setting forward or backward rotation compressor dielectric enclose quantity for electric refrigerator

Info

Publication number: CN1548904A
Application number: CNA031299121A
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 present invention relates to one kind of refrigerator with forward/backward rotation compressor and provides one setting method of the sealed compressor medium amount. The sealed amount of low refrigerating capacity medium for compressor in backward rotation is set as the sealed compressor medium amount. The setting method includes the following steps: operating compressor in backward direction; detecting the temperature in evaporator and the temperature at evaporator inlet; calculating the sealed medium amount during identical temperature in evaporator and temperature at evaporator inlet as the set sealed medium amount for the compressor.

Description

Refrigerator just or contrary rotary compressor medium enclosed volume establishing method

Technical field

The present invention relates to a kind of with just or the invention of the refrigerator aspect of contrary rotation compressor, furtherly, relate to a kind of following refrigerator just or contrary rotary compressor medium enclosed volume establishing method (LOCKWISE/COUNTERCLOCKWISE COMPRESSOR REFRIGERANT MOUNT ENACTMEN-TMETHOD FOR REFRIGERATOR): the compressor medium enclosed volume when the contrary direction that will hang down refrigerating capacity is rotated is set at the medium enclosed volume of 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.

For above-mentioned high refrigerating capacity refrigerating circulation system or low refrigerating capacity refrigerating circulation system,, can not embody best freeze cycle with operation mode because the length of expansion gear is identical.With reference to the accompanying drawings prior art is 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 medium steam of low pressure compresses, and makes the medium steam of high temperature, high pressure; Above-mentioned condenser 2 is discharged into the heat of the medium 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 medium of low temperature, low pressure to by capillary 3, and the medium 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 medium of 3 one-tenth low temperature of capillary, low pressure, and the medium 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.

Below the freeze cycle with said structure is elaborated.

At first freezing running, when also being high refrigerating capacity cooling operation, the medium of compressed HTHP flow into above-mentioned condenser 2 in above-mentioned compressor 1, the medium that flow into the HTHP of above-mentioned condenser 2 is condensed, and condensed medium converts the medium of low-temp low-pressure to through above-mentioned capillary 3.

Then, the above-mentioned first evaporimeter F-EVA sucks above-mentioned low-temp low-pressure medium, and above-mentioned low-temp low-pressure medium is evaporated, and discharges the saturated vapor that does not have liquid component to refrigerating chamber then.

The refrigeration running, when also promptly hanging down the refrigerating capacity cooling operation, medium at above-mentioned compressor 1 compressed HTHP flow into above-mentioned condenser 2, and the medium that flow into the HTHP of above-mentioned condenser 2 is condensed, and condensed medium converts the medium of low-temp low-pressure to through above-mentioned capillary 3.

Then, the above-mentioned second evaporimeter R-EVA sucks above-mentioned low-temp low-pressure medium, carries out heat exchange at refrigerating chamber, discharges chilled air.

Wherein, the compressor that freeze cycle adopted at above-mentioned refrigerator only is rotated according to positive direction, all the time be in the high power output state, but after the temperature maintenance stable status in refrigerator, when not needing very strong refrigerating capacity, above-mentioned compressor still is rotated according to positive direction, so power consumption is very big.

In order to address the above problem, occur a kind ofly according to the refrigeration needs, the compressor that can be rotated according to positive direction or contrary direction can reduce power consumption.That is to say,, can reduce power consumption according to contrary direction drive compression machine to produce less refrigerating capacity when the refrigerator process enters into stable state certain duration of runs.

But, for adopted above-mentioned can be just or the refrigerator of contrary rotation compressor, the medium enclosed volume in the compressor during with positive rotation highoutput be that standard is set.

That is to say, as shown in Figure 2, the medium enclosed volume of the some correspondence that the evaporator temperature during with the compressor positive rotation is consistent with the evaporator inlet temperature is set at the medium enclosed volume of compressor, when compressor turns round according to the direction of hanging down refrigerating capacity, the phenomenon of medium deficiency can appear, so reduced freezing efficiency.

Summary of the invention

The present invention proposes in order to solve above-mentioned prior art problems, the purpose of this invention is to provide a kind of refrigerator that can bring following effect just or contrary rotary compressor medium enclosed volume establishing method: be set at the medium enclosed volume of compressor with the medium enclosed volume of compressor when the contrary direction rotation of low refrigerating capacity, the medium when having prevented the positive rotation of compressor or contrary rotation running is foot phenomenon not.

In order to realize the purpose of the invention described above, can be just or the refrigerator of contrary rotation compressor for having adopted, the invention provides a kind of refrigerator just or contrary rotary compressor medium enclosed volume establishing method, its characteristic action: refrigerator of the present invention just or contrary rotary compressor medium enclosed volume establishing method comprise following 3 processes substantially: the 1st process: the user makes compressor to contrary direction running; The 2nd process: when the contrary direction of above-mentioned compressor turns round, detect the temperature and the evaporator inlet temperature of evaporimeter; The 3rd process: calculate the temperature of above-mentioned evaporimeter when consistent with the evaporator inlet temperature, the medium enclosed volume of corresponding points is set at the medium enclosed volume of compressor.

Therefore, by refrigerator of the present invention just or contrary rotary compressor medium enclosed volume establishing method can bring following effect:

With the little direction of refrigerating capacity, the medium enclosed volume of the compressor when that is to say with contrary direction rotation is set at the medium enclosed volume of compressor, prevented from when compressor positive rotation or contrary rotation running, not foot phenomenon of medium to occur, improved the freezing efficiency of refrigerator.

Description of drawings

Fig. 1 demonstrates the schematic diagram of the freeze cycle of general refrigerator;

Medium enclosed volume when Fig. 2 demonstrates positive rotation among Fig. 1 and the graph of a relation between the evaporator temperature;

Fig. 3 demonstrate refrigerator of the present invention just or the workflow diagram of contrary rotary compressor medium enclosed volume establishing method;

Medium enclosed volume when Fig. 4 demonstrates positive rotation among Fig. 3 and the graph of a relation between the evaporator temperature.

The specific embodiment

With reference to the accompanying drawings, to refrigerator of the present invention just or the effect and the effect of contrary rotary compressor medium enclosed volume establishing method be elaborated.

Fig. 3 demonstrate refrigerator of the present invention just or the workflow diagram of contrary rotary compressor medium enclosed volume establishing method.Medium enclosed volume when Fig. 4 demonstrates positive rotation among Fig. 3 and the graph of a relation between the evaporator temperature.

As shown in Figure 3, refrigerator of the present invention just or contrary rotary compressor medium enclosed volume establishing method comprise following 3 processes substantially: the 1st process (SP1): the user makes compressor to contrary direction running; The 2nd process (SP2): when the contrary direction of above-mentioned compressor turns round, detect the temperature and the evaporator inlet temperature of evaporimeter; The 3rd process (SP3-SP5): calculate the temperature of above-mentioned evaporimeter and the medium enclosed volume of the consistent time point of evaporator inlet temperature, be set at the medium enclosed volume of compressor.

Below to refrigerator of the present invention just or the contrary rotary compressor medium enclosed volume establishing method course of work being elaborated.

The SP1 stage: the user selects to make the compressor of refrigerator according to the operation mode of contrary direction running, makes compressor according to contrary direction rotation.

The SP2 stage: under the contrary direction operating condition of compressor, detect evaporator temperature and evaporator inlet temperature.

SP3, the SP4 stage: more above-mentioned then evaporator temperature and evaporator inlet temperature according to comparative result, if evaporator temperature is consistent with the evaporator inlet temperature, calculate the consistent medium amount of putting.

The SP5 stage: more than give an account of the medium enclosed volume that quality settings is a compressor.

That is to say, as shown in Figure 4, the medium amount of Jie's quality during contrary direction during than positive direction is big, so the medium amount during with contrary direction is set at the medium enclosed volume, the medium that produces in the time of solving positive direction and contrary direction running is foot phenomenon not, improves the freezing efficiency of refrigerator.

That is to say, by refrigerator of the present invention just or contrary rotary compressor medium enclosed volume establishing method can bring following effect: because the medium amount during with the many contrary direction of medium amount is set at the medium enclosed volume, the low problem of freezing efficiency that causes owing to the medium deficiency in the time of can preventing driven compressor in advance.

Claims

One kind adopted can be just or the refrigerator of contrary rotation compressor, its compressor medium enclosed volume establishing method comprises:

The 1st process: the user makes compressor to contrary direction running;

The 2nd process: when the contrary direction of above-mentioned compressor turns round, detect the temperature and the evaporator inlet temperature of evaporimeter;

The 3rd process: calculate the temperature of above-mentioned evaporimeter when consistent with the evaporator inlet temperature, corresponding medium enclosed volume is set the medium enclosed volume into compressor.