KR19990061263A - Dew prevention control method of main PC of refrigerator - Google Patents

Abstract

The present invention relates to a dew point control method of a main PC of a refrigerator, the method of controlling a refrigerator comprising: connecting a power plug of a refrigerator to a power outlet to normally operate the refrigerator, and the main PC temperature sensing unit during normal operation of the refrigerator. Sensing the ambient temperature of the main PC and sending it to the main PC, and during the normal operation of the refrigerator, the refrigerator temperature sensing unit detects the temperature of the refrigerator and sends it to the main PC, and the main PC is the temperature detected by the main PC temperature sensing unit. And comparing the temperature detected by the refrigerator compartment temperature detector, and when the temperature detected by the refrigerator compartment temperature detector is higher than the temperature detected by the main PC temperature detector, the heater installed in the protection cover surrounding the main PC is driven for a predetermined time. To prevent dew from occurring, and the fridge temperature sensor When the detected temperature is lower than the temperature detected by the main PC temperature sensing unit, turning off the heater, thereby eliminating the dew generated in the main PC when the external temperature of the refrigerator enters the refrigerating chamber, thereby improving the reliability of the main PC. It is.

Description

Dew prevention control method of main PC of refrigerator

The present invention relates to a refrigerator, and more particularly, to a dew preventing control method of a main PC of a refrigerator for removing dew generated in a main PC, which is a main controller installed inside the refrigerator.

In general, a refrigerator is an electronic product used for keeping food fresh for a certain period of time. As shown in FIG. 1, the refrigerator is divided into a main body 10 and a freezer compartment for freezing and storing the food. 11) and a refrigerating chamber 12 for refrigerating, a refrigerating chamber door 13 for opening and closing the freezer compartment 11 and a refrigerating chamber door 14 for opening and closing the freezer compartment 11 at the front of the main body 10, It is composed of a freezing cycle for making the cold air required for cooling the freezing chamber 11 and the refrigerating chamber 12, and a cold air supply means for sending the cold air made in the freezing cycle to the freezing chamber 11 and the refrigerating chamber 12.

As shown in FIG. 2, the refrigerating cycle of the refrigerator includes a compressor 15 for compressing a low-temperature, low-pressure gas refrigerant into a high-temperature, high-pressure gas refrigerant, and condensing the high-temperature, high-pressure gas refrigerant to a high-temperature, high-pressure pressure. A condenser 16 for converting a liquid refrigerant, a capillary tube 17 for converting the high temperature and high pressure liquid refrigerant into a low temperature and low pressure liquid refrigerant, and a low temperature and low pressure gas refrigerant for the low temperature and low pressure liquid refrigerant. And an evaporator 18 for evaporating the furnace, and a connecting pipe 19 serving as a moving passage of the refrigerant while integrating the respective components.

Therefore, when the refrigeration chamber 11 is filled with the food for freezing and the refrigeration chamber 12 is supplied with the refrigerated food in the state of filling the refrigerated food, the compressor 15 constituting the refrigeration cycle is driven under the control signal of the controller to operate at low temperature and low pressure. The gas refrigerant is compressed into a gas refrigerant of high temperature and high pressure.

The compressed high-temperature, high-pressure gas refrigerant is guided to the connecting pipe 19 and condensed into a high-temperature, high-pressure liquid refrigerant while passing through the condenser 16. The condensed high-temperature, high-pressure liquid refrigerant is transferred to the connecting pipe 19. Guided through the capillary tube 17, the temperature and pressure is rapidly converted into low-temperature, low-pressure liquid refrigerant and then guided to the connecting pipe 19 to pass through the evaporator 18 to convert to low-temperature, low-pressure gas refrigerant The evaporator 18 is then evaporated. At this time, the ambient air is heat-exchanged by the evaporation of the evaporator 18 so that cold air is generated.

As such, the cold air generated in the evaporator 18 is partially supplied to the freezing chamber 11 by the cold air supply means to cool the freezing chamber 11, so that the food stored in the freezing chamber 11 is frozen and a portion of the cold chamber 12 is cooled. Since the refrigerator is cooled to the refrigerator compartment 12, the food stored in the refrigerator compartment 12 is refrigerated.

In the conventional refrigerator configured as described above, when a user opens the refrigerator door of the refrigerator for a long time (open), warmth flows from the outside into the refrigerator, causing dew on the main PC installed inside the refrigerator.

Therefore, since the main PC is corroded by dew, the refrigerator does not operate normally, which lowers the refrigerating efficiency of the refrigerator, and leads to the deterioration of the food due to the proliferation of microorganisms that cause decay and deterioration of the food.

The present invention has been made to solve the above-mentioned problems of the prior art, an object of the present invention is to install a main PC temperature sensing unit for sensing the ambient temperature of the main PC ratio on one side of the main PC ratio to the main PC temperature sensing unit The present invention provides a method for preventing dew from the main PC of a refrigerator to remove dew generated from the main PC by driving an anti-dew heater according to the sensed temperature.

The dew point control method of the main PC of the refrigerator according to the present invention is characterized in that the step of connecting the power plug of the refrigerator to the power outlet to operate the refrigerator normally, and the main PC temperature sensing unit during the normal operation of the refrigerator Sensing ambient temperature and sending it to the main PC, and during the normal operation of the refrigerator, the refrigerator temperature sensor detects and sends the refrigerator temperature to the main PC, and the main PC is detected and the temperature of the refrigerator Comparing the temperature detected by the sensing unit, and if the temperature detected in the refrigerator compartment temperature sensing unit is higher than the temperature detected by the main PCS temperature sensing unit, the dew heater is driven for a predetermined time by driving the heater installed in the protective cover surrounding the main PC. The temperature detected by the fridge temperature detector When the temperature is lower than the temperature of the PC temperature sensing unit, including the step of turning off the driving of the heater to remove the dew generated in the main PC when the warm air outside the refrigerator to improve the reliability of the main PC.

1 is a longitudinal sectional view showing a main configuration of a general refrigerator;

2 is a block diagram showing a refrigeration cycle of a typical refrigerator;

Figure 3 is a block diagram showing a dewey prevention device of the main PC of the refrigerator according to the present invention,

4 is a flowchart illustrating a control method of an apparatus for preventing dew of a main PC of a refrigerator according to the present invention.

Explanation of symbols on the main parts of the drawings

20: freezer temperature sensor

22: Main PCB (Printed Circuit Board)

24: main PC temperature sensing unit 28: heater driving unit

30: heater

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the dew-proof control method of the main PC of the refrigerator according to the present invention will be described.

FIG. 3 is a block diagram illustrating an apparatus for preventing dew of a main PC of a refrigerator according to the present invention, and FIG. 4 is a flowchart illustrating a control method of an apparatus for preventing dew of a main PC of a refrigerator according to the present invention.

Referring to FIG. 3, the apparatus for preventing dew of the main PC of the refrigerator according to the present invention includes a refrigerator compartment temperature detector 20 and a refrigerator compartment temperature detector 20 for detecting an internal temperature of the refrigerator compartment according to the operation of the refrigerator. The main PCB 22 controlling the entire system of the refrigerator according to the temperature, the main PCB temperature sensing unit 24 sensing the ambient temperature of the main PCB 22 according to the operation of the refrigerator, and the refrigerator compartment temperature detecting unit 20. When the detected temperature is higher than the temperature detected by the main PCC temperature sensing unit 24 is configured by the heater driver 28 for driving the heater 26 in accordance with the control signal of the main PCB (22).

The main PC 22 is wrapped in a protective cover (not shown).

Dew is generated in the main PC 22 when the temperature sensed by the refrigerating compartment temperature detecting unit 20 is higher than the temperature detected by the main PC temperature sensing unit 24.

Therefore, the anti-dew heater 26 is installed on the upper and lower ends of the protective cover.

Referring to FIG. 4, the operation of the apparatus for preventing dew of the main PC of the refrigerator according to the present invention configured as described above is as follows.

First, when the power plug of the refrigerator is connected to the power outlet, the refrigerator performs normal operation (S101).

Subsequently, during the normal operation of the refrigerator, the main PC temperature sensor 24 detects the ambient temperature of the main PC 22 and sends it to the main PC 22 (S102).

In addition, the refrigerator compartment temperature detection unit 20 detects the refrigerator compartment temperature during the normal operation of the refrigerator and sends it to the main PC 22 (S103).

The main PC 22 compares the temperature sensed by the main PC temperature sensing unit 24 with the temperature sensed by the refrigerating compartment temperature sensing unit 20 (S104).

Dew is generated in the main PC 24 when the temperature sensed by the refrigerating compartment temperature detecting unit 20 is higher than the temperature detected by the main PC temperature sensing unit 24.

Therefore, when the temperature sensed by the refrigerating compartment temperature detector 20 is higher than the temperature detected by the main PCB temperature detector 24, the heater installed in the protective cover surrounding the main PCB 22 is driven for a predetermined time (S105). Do not allow dew to occur.

If the temperature sensed by the refrigerating compartment temperature detector 20 is lower than the temperature detected by the main PCB temperature detector 24 (S106), the driving of the heater is turned off (S107).

Dew prevention control method of the main PC of the refrigerator according to the present invention has the effect of improving the reliability of the main PC by removing the dew generated in the main PC when the warm outside the refrigerator is introduced into the refrigerator.

Claims (1)

In the control method of the refrigerator, Connecting the power plug of the refrigerator to a power outlet to drive the refrigerator normally; While the refrigerator is in normal operation, the main PC temperature sensing unit detects an ambient temperature of the main PC and sends it to the main PC; During the normal operation of the refrigerator, refrigerating room temperature detection unit detecting a refrigerating room temperature and sending it to the main PCB; The main PC ratio may include comparing the temperature detected by the main PC temperature sensing unit with a temperature detected by the refrigerating compartment temperature sensing unit; When the temperature sensed by the refrigerating chamber temperature detector is higher than the temperature detected by the main PC ratio temperature detector, driving a heater installed on the protective cover surrounding the main PC ratio for a predetermined time to prevent dew; And turning off the driving of the heater when the temperature sensed by the refrigerating compartment temperature sensing unit is lower than the temperature sensed by the main PC ratio temperature sensing unit.