CN1548911A

CN1548911A - Operation control method for clockwise/anti-clockwise rotary compressor of refrigerator

Info

Publication number: CN1548911A
Application number: CNA031299210A
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 control method for clockwise/counterclockwise rotation compressor in refrigerator capable of maintaining the user set temperature and operating in cold storage mode includes the following periodically repeated stages: the first stage of rotating the compressor clockwise to increase refrigerating capacity; the second stage of judging whether the operation time exceeds the set clockwise rotation time; the third stage of rotating the compressor counterclockwise to reduce refrigerating capacity if exceeding the set clockwise rotation time; and the fourth stage of stopping the compressor if the temperature inside the refrigerator is lowered to the set lower limit temperature owing to the counterclockwise rotation of the compressor. The said method can reduce the power consumption of refrigerator.

Description

Refrigerator clockwise/be rotated counterclockwise the method for controlling of operation of compressor

Technical field

The present invention relates to refrigerator clockwise/be rotated counterclockwise the method for controlling of operation of compressor.

Background technology

In general, the kind of refrigeration cycle that acts on refrigerator generally is divided into and is used for to the cold power circulation of the pressure of refrigerating chamber supply cold air and is used for weak refrigeration power circulation to refrigerating chamber supply cold air.

Here, for forcing cold power kind of refrigeration cycle or weak refrigeration power kind of refrigeration cycle, because the length of their expansion structures is identical, therefore can not realize best kind of refrigeration cycle according to operation mode, with reference to the accompanying drawings the prior art that possesses this structure is illustrated.

As shown in Figure 1, in such kind of refrigeration cycle, generally comprise compressor (1), condenser (2), the 1st evaporimeter (F-EVA), the 2nd evaporimeter (R-EVA) and capillary (3); Be compressor (1), it can suck the cold media gas of the low temperature of being discharged by evaporimeter, low pressure, handles the gas that the refrigerant that makes state becomes high temperature, high pressure by compression then; Condenser (2), it can make the heat by the cold media gas of the high temperature of compressor (1) discharge, high pressure be discharged in water or the air, makes it become the saturated liquid of high pressure; The 1st evaporimeter (F-EVA), the refrigerant saturated liquid of the high pressure of being discharged by above-mentioned condenser (2) can become the refrigerant liquid of low temperature, low pressure after by capillary (3), and evaporimeter (F-EVA) can suck such refrigerant and make its evaporation, supplies cold air then in refrigerating chamber by heat exchange; The 2nd evaporimeter (R-EVA), the refrigerant saturated liquid of the high pressure of being discharged by condenser (2) can become the refrigerant liquid of low temperature, low pressure after by capillary (3), and above-mentioned evaporimeter (R-EVA) can suck such refrigerant and make its evaporation, supplies cold air then in refrigerating chamber by heat exchange;

At first, when carrying out freezing (force cold power circulation), the refrigerant that is compressed into high temperature, high pressure in compressor (1) can flow in the condenser (2) and be condensed, and can become the refrigerant of low temperature, low pressure afterwards after flowing through (3) capillary (3).

Next, the 1st evaporimeter (F-EVA) sucks and makes its evaporation with the refrigerant of low temperature, low pressure, thereby discharges the saturated gas that does not have liquid component to refrigerating chamber.

When refrigerating (weak refrigeration power circulation), the refrigerant that is compressed into high temperature, high pressure in compressor (1) can flow in the condenser (2) and be condensed, and can become the refrigerant of low temperature, low pressure afterwards after flowing through (3) capillary (3).

Next, the 2nd evaporimeter (R-EVA) sucks and makes its evaporation with the refrigerant of low temperature, low pressure, supplies cold air by heat exchange to refrigerating chamber then.

Here, the compressor that is adopted in the kind of refrigeration cycle of refrigerator can only rotate in the direction of the clock, thereby always with high way of output work, therefore the temperature at refrigerator keeps stable state, do not need under the situation of very strong refrigeration, compressor also still carries out clockwise rotation, thus the problem of bringing power consumption to increase.

In order to address this problem, adopted in the present refrigerator a kind of can be according to the needs of refrigeration power and clockwise or the compressor that is rotated counterclockwise, and reduce power consumption by this technology.That is to say,, thereby entered stable state by being assert if surpassed the time point of a setting running time of refrigerator, so refrigerator will the drive compression machine by rotation counterclockwise, thereby produce weak refrigeration power, reduce power consumption.

But for said method; when refrigerator moves according to user's order; usually have following situation and take place, produce cold air thereby promptly still turn clockwise, and this still can bring the problem that power consumption is increased at the situation lower compression machine that does not need very big output.

Summary of the invention

In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides a kind of refrigerator clockwise/be rotated counterclockwise the method for controlling of operation of compressor, so that refrigerator can be according to the temperature of the refrigerator that monitors, utilize clockwise/compressor that is rotated counterclockwise to control the temperature inside the box of refrigerator, promptly the needs according to refrigeration power change, the stroke distances of compressor piston, thus reduce power consumption and the temperature inside the box is remained on the design temperature.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of refrigerator clockwise/be rotated counterclockwise the method for controlling of operation of compressor, its feature is: it by with some cycles repeatedly following several stages realize control: compressor rotates in the direction of the clock, thus the 1st stage that refrigeration power is increased; Judge and whether surpassed the 2nd stage of described stipulated time of rotating in the direction of the clock the duration of runs of compressor; If surpassed the described stipulated time of rotation in the direction of the clock, so just make compressor by rotation counterclockwise, thus the 3rd stage that refrigeration power is reduced; If make temperature in the case drop to the lower limit temperature of design temperature, compressor is quit work the 4th stage of (off) by being rotated counterclockwise of described compressor.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the simple schematic diagram of the kind of refrigeration cycle (cycle) of general refrigerator

Fig. 2 for refrigerator of the present invention clockwise/be rotated counterclockwise the flow chart of the method for controlling of operation of compressor

The specific embodiment

With reference to the accompanying drawings example of the present invention is described in detail.

As shown in Figure 2, the present invention is in temperature that can keep the user to set and the refrigerator with the refrigeration mode operation, by with some cycles repeatedly following several stages realize control, promptly compressor rotates in the direction of the clock, thus the 1st stage that refrigeration power is increased; Judge and whether surpassed the 2nd stage of above-mentioned stipulated time of rotating in the direction of the clock the duration of runs of compressor; If surpassed the above-mentioned stipulated time of rotation in the direction of the clock, so just make compressor by rotation counterclockwise, thus the 3rd stage that refrigeration power is reduced; If make temperature in the case drop to the lower limit temperature of design temperature, compressor is quit work the 4th stage of (off) by being rotated counterclockwise of above-mentioned compressor.Below aforesaid course of action of the present invention is illustrated.

At first, if the user has selected the operational mode of refrigerator, in the starting stage compressor of refrigerator is rotated in the direction of the clock so, produce the cold power of forcing, thereby make the temperature of refrigerator inside promptly reduce to design temperature, judge then whether the time of operation has surpassed the stipulated time (SP1, SP2) like this.

According to above-mentioned judged result, if surpassed the stipulated time, the compressor of refrigerator is rotated repeatedly by counter clockwise direction with certain cycle, produce weak refrigeration power, thereby make refrigerator inside continue maintenance existing state (SP3).

Here, the described stipulated time refers to the required time of following state that reaches, such state refers to the temperature that sets according to the user, thereby compressor the starting stage turn clockwise produce to force cold power after, refrigerator continues keeping design temperature and the state that do not need to force cold power.

Next, compressor can be by rotation counterclockwise, if when the temperature in the case can satisfy the temperature that the user sets, and compressor quit work (off) then; If the temperature in the case can not satisfy the temperature that the user sets, then carry out said process repeatedly, thereby temperature in the case is remained on the temperature that the user sets (SP4) with some cycles.

Afterwards,, thereby can satisfy the temperature that the user sets, so compressor will quit work (SP5) if above-mentioned the temperature inside the box has reached uniform temperature.When the temperature inside the box can not satisfy the temperature that the user sets once more, compressor can restart, aforesaid repeatedly course of action then.

In other words, the present invention rotates compressor in the direction of the clock, forces cold power thereby produce, and reduces under the state of design temperature at the temperature inside the box then, compressor is rotated by counter clockwise direction with some cycles, thereby make the inside of refrigerator continue to keep standing state.

The effect of invention

Describe in detail as top, at first the refrigerator among the present invention can be according to the refrigerator that monitors Temperature, the compressor that utilization can rotate clockwise/counterclockwise is controlled the temperature inside the box of refrigerator, and The present invention is carrying out aspect such control, can make compressor by clockwise when needs increase refrigeration power Direction rotation, thus make the stroke distances of compressor piston elongated, when reducing to freeze power, needs then make Compressor rotates by counter clockwise direction, thereby the stroke distances of piston is shortened. Thereby by energy of the present invention Enough reach the effect that reduces power consumption.

Claims

1, a kind of refrigerator clockwise/be rotated counterclockwise the method for controlling of operation of compressor, it is characterized in that, it by with some cycles repeatedly following several stages realize control: compressor rotates in the direction of the clock, thus the 1st stage that refrigeration power is increased; Judge and whether surpassed the 2nd stage of described stipulated time of rotating in the direction of the clock the duration of runs of compressor; If surpassed the described stipulated time of rotation in the direction of the clock, so just make compressor by rotation counterclockwise, thus the 3rd stage that refrigeration power is reduced; If make temperature in the case drop to the lower limit temperature of design temperature, compressor is quit work the 4th stage of (off) by being rotated counterclockwise of described compressor.