KR19990041815A - Refrigerator and its control method - Google Patents

Abstract

In particular, the refrigerator includes a refrigerator including a condenser, a capillary tube, an evaporator, and a freezer compartment, comprising: a door open / close detection unit detecting whether the door is opened or closed, a freezer temperature detection unit detecting a predetermined temperature of the freezer compartment, and a freezer temperature A central control unit controlling the entire system according to a predetermined temperature sensed by the sensing unit, a ROM in which a program operates according to a control signal of the central control unit, a RAM storing data selected from the central control unit and reading out the stored data, and a freezer compartment The compressor which is controlled by the central control unit according to the predetermined temperature detected by the temperature sensing unit and compresses the low-temperature and low-pressure gas refrigerant into the high-temperature and high-pressure gas refrigerant in the refrigerator, and the high-temperature and high-pressure gas refrigerant generated by the compressor are condensers. Low-temperature, low-pressure gaseous refrigerants through capillary tubes and evaporators Refrigeration and refrigerating fan which sends coolant of refrigerant to freezer and refrigerating chamber, sleep operation key to input sleep key when the user takes the control to central control unit, and sleep operation to inform user when sleep operation key is applied to central control unit. It consists of a display unit to achieve a comfortable sleep when the user sleeps.

Description

Refrigerator and its control method

The present invention relates to a refrigerator, and more particularly, to a refrigerator and a control method of turning off a compressor and a freezer / refrigerating fan which are a source of noise of a refrigerator when a user takes a drink.

In general, a refrigerator is an electronic product used for keeping food fresh for a predetermined 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 food in the main body 10. (11) and the refrigerating compartment 12 for refrigerating, the freezer compartment 13 installed at the front of the main body 10 to open and close the freezer compartment 11, and the refrigerating compartment door 14 for opening and closing the refrigerating compartment 12; It is largely composed of a freezing cycle for making cold air required for cooling the freezing chamber 11 and the refrigerating chamber 12, and 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.

The conventional refrigerator configured as described above has a problem of disturbing the user's sleep due to noise caused by the start of the compressor and the refrigerating / freezing chamber fan of the refrigerator.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide a refrigerator and a control method for achieving a comfortable sleep when a user sleeps by installing a sleep operation key on the outer side of the refrigerator. have.

Features of the refrigerator according to the present invention, the door opening and closing detection unit for detecting whether the door opening and closing of the refrigerator, the freezer compartment temperature detection unit for detecting a predetermined temperature of the freezer compartment of the refrigerator, the entire temperature according to the predetermined temperature detected by the freezer compartment temperature detection unit The central control unit for controlling the system, the ROM in which the program operates according to the control signal of the central control unit, the RAM storing the data selected by the central control unit and reading the stored data, and the predetermined temperature detected by the freezer temperature sensing unit The compressor which is controlled by the central control unit and compresses the low temperature and low pressure gas refrigerant into the high temperature and high pressure gas refrigerant in the refrigerator, and the high temperature and high pressure gas refrigerant generated by the compressor is controlled by the condenser, the capillary tube and the evaporator. Refrigeration and refrigerating fan which is converted into gas refrigerant and sends the cold air of the low temperature and low pressure gas refrigerant to the freezing and refrigerating chamber. And a sleep operation key for inputting a sleep key when the user is taken to the central control unit, and a sleep operation indicator for informing the user when the sleep operation key is applied to the central control unit. Determining whether the sleep operation key has been applied; determining whether the sleep operation key has been applied again within a predetermined time; and checking whether there is an abnormality in the freezer compartment temperature detection unit and the door opening / closing detection unit when the sleep operation key is applied; Determining whether the temperature sensed by the freezer temperature sensing unit is less than or equal to the first predetermined temperature, and if the temperature is less than or equal to the first predetermined temperature, entering the sleep operation for a predetermined time and turning on the sleep operation indicator consisting of LEDs; After the freezer / refrigerator fan is turned off and the compressor and freezer / refrigerator fan are turned off, the temperature detected by the freezer compartment temperature sensor is removed. When the temperature detected by the freezer compartment temperature sensing unit is greater than or equal to the second preset temperature by determining whether the temperature is greater than or equal to the second preset temperature, delaying the operation of the freezer / refrigerator fan for a predetermined time and then operating the user for a predetermined time for sleeping At the same time to achieve a comfortable sleep.

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;

3 is a block diagram of a refrigerator according to the present invention;

FIG. 4 is a view illustrating a sleep operation key and a sleep operation indicator of FIG. 3 installed at a predetermined position outside the refrigerator; FIG.

5 is a flowchart illustrating a control method of a refrigerator according to the present invention.

Explanation of symbols on the main parts of the drawings

20: door open and close detection unit 21: freezer compartment temperature detection unit

22: central control unit 23: ROM

24 RAM 25 Compressor

26: freezer compartment fan drive unit 27: the sleep operation key

28: sleep operation indicator

Hereinafter, a preferred embodiment of a refrigerator and a control method thereof according to the present invention will be described with reference to the accompanying drawings.

3 is a block diagram of a refrigerator according to the present invention, FIG. 4 is a view illustrating a sleep operation key and a sleep operation indicator of FIG. 3 installed at a predetermined position outside the refrigerator, and FIG. 5 is a control method of the refrigerator according to the present invention. It is a flow chart showing.

Referring to Figure 3, the refrigerator according to the present invention, the door opening and closing detection unit 20 for detecting whether the door of the refrigerator opening or closing, the freezer compartment temperature detecting unit 21 for detecting a predetermined temperature of the freezer of the refrigerator, freezer compartment temperature detection The central control unit 22 controls the entire system according to the predetermined temperature sensed by the unit, a ROM 23 in which a program operates according to the control signal of the central control unit 22, and the central control unit 22 is selected. RAM 24 which stores data and reads out the stored data, and which is controlled by the central control unit 22 according to a predetermined temperature detected by the freezer compartment temperature sensing unit 21 and is a low-temperature, low-pressure gas in the refrigerator. The compressor 25 compresses the refrigerant into a high-temperature, high-pressure gas refrigerant, and the high-temperature, high-pressure gas refrigerant generated by the compressor 25 is provided through a condenser (not shown), a capillary tube (not shown), and an evaporator (not shown). Converted to a low-temperature, low-pressure gas refrigerant A refrigeration / refrigeration chamber fan 26 which sends cold air of low-temperature and low-pressure gas refrigerant to the refrigerating and refrigerating chamber, a sleep operation key 27 for inputting a sleep key when the user is taken to the central control unit 22, and It is composed of a sleep operation indicator 28 to inform the user when the sleep operation key 27 is applied to the central control unit 22.

The sleep operation key 27 and the sleep operation indicator 28 are provided at a predetermined position outside the refrigerator as shown in FIG.

The operation of the refrigerator according to the present invention configured as described above will be described with reference to FIG. 5.

First, when the refrigerator is in sleep operation, it is determined whether the sleep driving key 27 is applied from the user (S101).

If the sleep operation key 27 is not applied, it is determined whether the sleep operation key 27 is applied again within a predetermined time 40 minutes (S102).

If the sleep operation key 27 is not applied again within a predetermined time 40 minutes, it is checked whether there is an abnormality of the freezer compartment temperature detecting unit 21 (S103).

When there is no abnormality in the freezer compartment temperature detecting unit 21, it is checked whether or not the door opening and closing detecting unit 20 is abnormal (S104).

When the door open / close detection unit 20 has no abnormality, it is determined whether the temperature detected by the freezer compartment temperature detection unit 20 is -15 ° C. or less (S105).

When the temperature sensed by the freezer compartment temperature sensing unit 21 is -15 ° C. or less, it enters the sleep operation (S106) and operates the sleep operation for a predetermined time 60 minutes (S107).

When the sleep operation is started, the sleep operation indicator 28 made of LED is turned on (S108), and the compressor and the freezer / refrigerator fan are turned off (S109).

Therefore, the temperature of the refrigerating compartment gradually decreases after a predetermined time due to the compressor and the refrigerating / freezing compartment fan being turned off.

At this time, it is determined whether the temperature detected by the freezer compartment temperature detecting unit 21 is -9 ° C. or higher (S110).

If the temperature detected by the freezer compartment temperature detection unit 21 is -9 ° C. or more, the freezer / refrigerator fan is delayed for a predetermined time by 5 minutes, and then driven for a predetermined time period of 40 minutes (S111).

At this time, the sleep operation display unit 28 made of the LED is turned off (S112), the normal operation of the refrigerator is carried out (S115).

If the temperature detected by the freezer compartment temperature sensing unit 21 is below -9 ° C, it is determined whether the sleep operation has passed a predetermined time 60 minutes (S113).

If the sleep operation has passed a predetermined time 60 minutes, the process proceeds to the step S111. If the sleep operation has not passed 60 minutes, it is determined whether the cumulative open time of the door has elapsed 30 seconds (S114).

If the cumulative open time of the door has passed 30 seconds, the process proceeds to step S112. If the cumulative open time of the door does not pass the predetermined time 30 seconds, the process proceeds to step S108.

When the refrigerator is in sleep operation, if the sleep driving key 27 is applied from the user, the flow proceeds to step S112.

When the sleep operation key 27 is applied again within a predetermined time 40 minutes, the flow proceeds to step S112.

If there is an abnormality in the freezer compartment temperature sensing unit, the flow proceeds to step S112.

If there is an abnormality of the door opening and closing detecting unit 20, the flow proceeds to step S112.

The refrigerator and its control method according to the present invention select a sleep operation key installed on the outside of the refrigerator to turn off the compressor and the freezer / refrigerator fan, which are the causes of the noise of the refrigerator, to achieve a comfortable sleep when the user sleeps.

Claims (5)

A refrigerator having a condenser, a capillary tube, an evaporator and a freezer, A door opening and closing detection unit detecting whether the door is opened or closed in the refrigerator; A freezer compartment temperature sensing unit sensing a predetermined temperature of the freezer compartment of the refrigerator; A central controller controlling the entire system according to a predetermined temperature detected by the freezer compartment temperature sensing unit; A ROM for operating a program according to a control signal of the central controller; A RAM for storing the data selected by the central controller and reading the stored data; A compressor controlled by a central controller according to a predetermined temperature detected by the freezer compartment temperature sensing unit and compressing a low temperature and low pressure gas refrigerant into a high temperature and high pressure gas refrigerant in the refrigerator; The high-temperature, high-pressure gas refrigerant generated by the compressor is converted into a low-temperature, low-pressure gas refrigerant through a condenser, a capillary tube, and an evaporator, and a freezing / freezing chamber fan that sends the converted low-temperature, low-pressure gas refrigerant to a freezing and refrigerating chamber. ; A sleep operation key for inputting a sleep key when a user is taken to the central controller; And a sleep operation indicator for informing a user when the sleep operation key is applied to the central controller. The refrigerator of claim 1, wherein the sleep operation key and the sleep operation indicator are provided at one side of the refrigerator. Determining whether a sleep operation key is applied to the refrigerator; Determining whether the sleep operation key is applied again within a predetermined time; Checking whether there is an abnormality in the freezer compartment temperature detecting unit and the door opening / closing detecting unit when the sleep operation key is applied; Determining whether the temperature sensed by the freezer compartment temperature sensing unit is less than or equal to a first predetermined temperature, and when the temperature is less than or equal to the first predetermined temperature, entering a sleep operation for a predetermined time and turning on a sleep operation indicator comprising an LED; Turning off the compressor and the refrigerating / freezing compartment fan when the water is driven; After the off time of the compressor and the freezer / freezer compartment, it is determined whether the temperature detected by the freezer compartment temperature sensing unit is greater than or equal to the second set temperature. If the temperature detected by the freezer compartment temperature sensing unit is greater than or equal to the second predetermined temperature, the freezer / freezer compartment And controlling the operation of the fan for a predetermined time, and then operating the fan for a predetermined time. 4. The method of claim 3, wherein the control operation comprises a step of turning off the sleep operation indicator made of the LED during the normal operation. The method of claim 3, wherein when the temperature detected by the freezer compartment temperature sensing unit is less than or equal to the second predetermined temperature, it is determined whether the sleep operation has elapsed for a predetermined time and the sleep operation has not elapsed for a predetermined time. Determining whether the cumulative open time of the door has passed a predetermined time; If the cumulative open time of the door does not pass a predetermined time, the control method of the refrigerator comprising the step of turning on the sleep operation indicator made of the LED.