KR100203068B1 - Self examination method of electronic refrigerator - Google Patents

Abstract

The present invention is characterized in that the refrigerator compartment temperature control button and the freezer compartment temperature control button are pressed simultaneously for 3 seconds so that all the display lamps are turned on for 1 second after the self-diagnosis preparation step is performed, A third step of performing a normal operation with respect to the refrigerator, a third step of detecting whether or not an artificial button signal is inputted during the execution of the third step, and when an artificial button signal is not inputted, A fourth step of continuing the process of step 4; a fifth step in which all the display lamps perform on / off operations for one second when the artificial button signal is input as a result of the detection of the fourth step; A sixth step of performing an off operation three times; a step of detecting whether there is a fault content during the execution of the sixth step and, if there is no fault content, moving to the ninth step to detect the next item; An eighth step of maintaining the on / off state of the display lamp when there is a fault content of the first item as a result of the detection of the seventh step, a ninth step of detecting the fault content of the next item, Detecting a presence or absence of a corresponding failure as a detection result of the step, and performing the process of the eighth step if there is a corresponding failure, If it is determined in step 11 that the detection of all items is completed, a buzzer sound is generated if there is no trouble content, and in addition, And returning to the previous setting state.

Description

Self-diagnosis method of electronic refrigerator

Figure 1 shows a typical refrigerator;

FIG. 2 is a block diagram showing an operation control device of a general electronic refrigerator. FIG.

Figure 3 shows a front temperature display of a typical electronic refrigerator.

FIG. 4 is a flow chart showing the operational flow of the self-diagnosis method of the electronic refrigerator according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

14, 21: first and second fan motors 31: compressor

40: DC power supply unit 50: Temperature control unit

51: Freezer room temperature controller 53: Refrigerator room temperature controller

60: control unit 70: temperature sensing unit

71: freezer compartment temperature sensing unit 73: refrigerator compartment temperature sensing unit

80: indoor temperature sensing unit 90: door opening /

100: compressor driving unit 110: fan motor driving unit

111, 113: first and second fan motor driving sections

The present invention relates to a self-diagnosis method for an electronic refrigerator, and more particularly, to a self-diagnosis method for an electronic refrigerator, in which a status signal of abnormality from a sensing means and a status signal from a load are output through a front- And a self-diagnosis method of an electronic refrigerator in which a display device is not required.

1, the freezer compartment 12 and the refrigerating compartment 13 are formed at upper and lower portions of the main body 10, and the freezing compartment 12 is formed at the front of the main body 10, And doors 12a and 13a for opening and closing the refrigerating chamber 13 are respectively mounted.

The evaporator 14 is mounted on the lower end of the freezing chamber 12 to heat-exchange the air blown by the latent heat of evaporation of the refrigerant into cold air or cool air. On the right side of the evaporator 14, A fan 15a that rotates according to the driving of the fan motor 15 is installed so as to circulate the cool air heat-exchanged by the fan motor 15 to the freezing chamber and the refrigerating chamber 12,

A damper summer 16 for sensing the internal temperature of the refrigerating chamber 13 and controlling the amount of cool air supplied to the refrigerating chamber 13 is mounted on the upper right side of the refrigerating chamber 13, , 13) is equipped with a plurality of shelf members (19) for partitioning the inner space into a cabinet and storing the stored food.

The cool air is circulated to the freezing chamber and the refrigerating chambers 12 and 13 by the rotational force of the fan 15a on the rear surface of the freezing chamber and the refrigerating chambers 12 and 13 And a cooling duct guided by the duct member 6a is connected to the rear wall portions of the freezing chamber and the refrigerating chambers 12 and 13 by the evaporator 14. The freezing chamber and the refrigerating chamber The cool air discharge port 16b is formed so as to be discharged into the discharge ports 12,

A compressor 17 for compressing the low-temperature low-pressure gas refrigerant cooled by the evaporator 14 into a high-temperature high-pressure gas is mounted on the lower end of the main body 10, An evaporation dish 17a for collecting moisture in the air generated when the air blown in accordance with the driving of the evaporator 15a is cooled by the evaporator 14 and cooled, .

On the left and right sides of the frame rear plate 10a and the cabinet 10b of the main body 10, a high-temperature and high-pressure gas refrigerant compressed by the compressor 17 is supplied to the compressor 10 by natural convection with external air or forced convection And a main condenser 18 for liquefying the liquid refrigerant by forced cooling with a low temperature and high pressure liquid refrigerant is mounted in a zigzag shape over the entire surface of the evaporation dish 17a and evaporates the evaporated water collected in the evaporation dish 17a at the lower end of the evaporation dish 17a The auxiliary condenser 18a is installed.

A capillary 18b for rapidly expanding the low-temperature low-pressure liquid-phase refrigerant liquefied in the main condenser 18 to the evaporation pressure and reducing the pressure to the low-temperature low-pressure free phase refrigerant is mounted on one side of the compressor 17, A condensation prevention pipe 18c is mounted on the outer circumferential surface of the flange to prevent dew condensation by hot air from the outside and cold air in the main body 10. [

Meanwhile, the conventional refrigerator as described above can detect a signal from the sensor of the refrigerator during operation, for example, a sensor housing detachment, a contact failure, a sensor wire disconnection and a short circuit, There is a problem that a separate display device must be installed.

In addition, when the defrost system breaks down, the food stored in the refrigerating compartment is damaged, and thus it is difficult to accurately diagnose and quickly cope with a fault.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a refrigerator which is capable of providing a self- The present invention provides a self-diagnosis method of an electronic refrigerator in which a device is not required.

According to an aspect of the present invention, there is provided a self-diagnosis method of an electronic refrigerator capable of displaying a status signal of abnormality from a sensing means and a status signal from a load in performing self-diagnosis of the electronic refrigerator, A first step in which all the display lamps are turned on for one second after the self-diagnosis preparation step is performed by pressing the refrigerator compartment temperature control button and the freezer compartment temperature control button simultaneously for 3 seconds, and a step for setting each item mode A third step of performing a normal operation for the refrigerator, a third step of detecting whether or not an artificial button signal is inputted during the execution of the third step, and continuing the third step if no artificial button signal is input A fifth step in which all the display lamps perform ON and OFF operations for one second when the artificial button signal is detected as a result of the detection of the fourth step, A sixth step of performing the on / off operation three times for 1 second for the display lamp of the neck, a step of detecting whether there is a failure during the execution of the sixth step, and if there is no trouble, A fourth step of detecting the failure of the first item, and a seventh step of detecting the failure of the first item if there is a failure of the first item, Detecting whether or not there is a corresponding fault content as a result of the detection of the ninth step and performing the process of the eighth step if there is a corresponding fault content; If it is determined that the detection of all items is not completed, performing the process of the ninth step if the detection of all the items is not completed; and if the detection of all the items is completed, And if not, a buzzer sound is generated and a previous setting state is restored.

According to the present invention configured as described above, in the case of occurrence of abnormality in various sensors, sensing parts, and loads required for control in an electronic refrigerator, an abnormality of a refrigerator is immediately output by outputting through a front temperature display, do.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of an operation control apparatus for a general electronic refrigerator. Referring to FIG. 2, a DC power supply unit 40 receives a DC voltage from a commercial AC power source (not shown) And supplies them to the respective driving circuits.

The temperature controller 50 includes a freezer compartment temperature controller 51 for setting the internal temperature Tf of the freezer compartment and a refrigerator compartment temperature controller 53 for setting the internal temperature Tr of the refrigerating compartment. And performs a function of a key position for setting the in-room temperature Tr of the desired refrigerator.

The control unit 60 receives the DC voltage supplied from the DC power supply unit 40 to initialize the refrigerator and controls the overall operation of the refrigerator according to the internal temperature of the freezer compartment and the refrigerating compartment set by the temperature controller 50 .

The temperature sensing unit 70 includes a freezer compartment temperature sensing unit 71 including a thermistor for sensing the in-compartment temperature Tf of the freezing compartment and a refrigerator compartment temperature sensing unit 71 including a thermistor for sensing the internal temperature Tr of the refrigerating compartment 73), and detects the internal temperature (Tr) of the refrigerator so as to control the internal temperature (Tr) at a temperature set by the user by the temperature controller (50) and perform a cooling operation of the refrigerator, (60).

The room temperature sensing unit 80 is formed of a thermistor mounted on the upper right side of the refrigerating compartment to sense the temperature of the outside air installed in the refrigerator, for example, the room temperature Tr.

The door opening / closing detector 90 is installed inside the refrigerator compartment door to detect whether the refrigerator compartment door of the refrigerator is opened or closed. When the door is closed, the door opening / closing detector 90 outputs a high level signal to the controller 60, When the door is opened, a low level signal is outputted.

The compressor driving unit 100 may control the compressor driving unit 100 in accordance with the control signal output from the controller 60 according to the difference between the temperature set by the user by the temperature adjusting unit 50 and the internal temperature sensed by the temperature sensing unit 70 The compressor for performing the cooling operation of the refrigerator is driven.

The fan motor driving unit 110 drives the fan motor driving unit 110 in response to a control signal outputted from the control unit 60 so as to maintain a constant temperature Tf of the freezing room at a temperature set by the user by the freezing room temperature adjusting unit 51 A first fan motor driving unit 111 for driving the first fan motor 14 and a control unit (not shown) for maintaining the internal temperature Tr of the refrigerating compartment constant at a temperature set by a user by the refrigerating compartment temperature adjusting unit 52 And a second fan motor driving unit 113 for driving the second fan motor 21 by a control signal output from the second fan motor 60. [

In addition, the driving unit 110 may include a fan (not shown) that circulates the heat exchanger cooler of the evaporator by a control signal output from the controller 60 to maintain the internal temperature constant by the temperature controller 50, The motors 14 and 21 are driven.

FIG. 3 is a view showing a front temperature display of a general electronic refrigerator. First, a refrigerator room temperature control button shown in a front temperature display is used for controlling a refrigerator room temperature, and a freezer room temperature control button is used for controlling a freezer room temperature.

In the present invention, the refrigerator is used for self-diagnosis of the refrigerator using the refrigerator temperature control button and the freezer temperature control button. Accordingly, when the refrigerator compartment temperature and the freezer compartment temperature are abnormally or abnormally generated, if the refrigerator compartment temperature control button and the freezer compartment temperature control button are simultaneously pressed, the self-diagnosis function of the refrigerator is performed, It is displayed by lighting and blinking.

Therefore, in order to perform the self-diagnosis of the electronic refrigerator according to the present invention, the self-diagnosis preparation step is performed by pressing the refrigerator room temperature control button and the freezer room temperature control button simultaneously for 3 seconds.

Thereafter, when the two temperature control button signals (artificial button signals) are inputted, the lamps of the front temperature display are all turned on and then turned off. The operation states of the front surface temperature display lamps indicate the failure states shown in Table 1.

Thereafter, the lamp of the step of the freezing room temperature indicating lamp performs the ON / OFF operation for one second three times (six seconds), thereby indicating the first item, for example, the abnormality of the freezing room sensor. Next, the lamp of the weak freezing stage among the freezing room temperature indicating lamps performs the ON / OFF operation for one second three times (six seconds), thereby indicating whether or not the second item, for example, the refrigerating room sensor is abnormal.

Then, the middle stage lamp of the freezer room temperature indicating lamp performs the ON / OFF operation for one second three times (six seconds), thereby indicating the third item, for example, the abnormality of the refrigerating chamber sensor. Thereafter, the ramp of the freezing room temperature indicating lamp indicates that the fourth item, for example, an abnormality of the outside air sensor, is obtained by performing ON / OFF operation for one second for three (six) seconds.

Next, the lamp of the weakest stage among the refrigerating room temperature indicating lamps performs the ON / OFF operation for one second three times (six seconds), thereby indicating whether or not the fifth item, for example, the COMPOR portion, is abnormal. Then, the refrigerating room temperature display lamp is moved to the cold room temperature display lamp, and the lamp of the cold room temperature is turned on and off for three seconds (six seconds) for one second to indicate whether the sixth item, for example, the EVA fan unit is abnormal.

Thereafter, the middle stage lamp of the refrigerating room temperature indicating lamp performs ON / OFF operation for one second three times (six seconds) to indicate the seventh item, for example, abnormality of the defrosting system. Then, the mid-high-grade lamp among the refrigerating room temperature indicating lamps performs the ON / OFF operation for one second three times (six seconds), thereby indicating whether or not the eighth item such as bimetal is abnormal.

Next, the lamp of the strong stage of the refrigerating room temperature indicating lamp performs the on / off operation for one second three times (six seconds), thereby indicating the ninth item, for example, the abnormality of the electric damper.

At this time, when a failure occurs in a predetermined item among the items, the display lamp repeats ON / OFF operations at intervals of 1 second to detect all the failure modes of the nine items. Therefore, the contents of the failure of the refrigerator can be easily detected only by the recognition of the display lamp, and quick repair is possible.

If no failure mode corresponding to the nine items has occurred, each lamp continues to be turned on and off, and a buzzer, for example, a beep sound is generated for one second, and then automatically returned to the pre-check setting state.

FIG. 4 is a flowchart illustrating an operational flow of the self-diagnosis method of the electronic refrigerator according to the present invention. First, in performing the self-diagnosis of the electronic refrigerator, a status signal indicating abnormality from the sensing means and a status signal from the load In the first step (S1), all of the indicator lamps are turned on for one second after the self-diagnosis preparation step is performed by pressing the refrigerator compartment temperature control button and the freezer compartment temperature control button simultaneously for 3 seconds .

The second step S2 sets each item mode for each display lamp, the third step S3 performs normal operation for the refrigerator, and the fourth step S4 corresponds to the third step S3 , It is determined whether or not an artificial button signal is inputted. If the artificial button signal is not input, the process of the third step S3 is continued.

In the fifth step S5, if an artificial button signal is detected as a result of the fourth step S4, all the display lamps perform the ON / OFF operation for one second. In the sixth step S6, The on-off operation for one second is performed three times.

The seventh step S7 detects whether or not there is a failure during the execution of the sixth step S6. If there is no failure, the process proceeds to step S9 to detect the next item , And in the eighth step S8, if there is a failure content of the first item as a result of the detection of the seventh step S7, the corresponding display lamp remains on and off.

In the ninth step S9, the failure content detection of the next item is performed, and in the tenth step S10, as a result of the detection in the ninth step S9, whether or not there is a corresponding failure content is detected, The process of the eighth step S8 is performed.

In the eleventh step S11, it is detected whether or not the detection of all the items is completed when the failure content is detected as a result of the tenth step S10. If not, the process of the ninth step S9 is performed In the twelfth step S12, if the detection of all the items is completed as a result of the detection of the eleventh step S11, if there is no malfunction, the buzzer sounds and returns to the previous setting state.

In addition, various modifications may be made without departing from the gist of the invention.

As described above, according to the present invention, when an abnormality occurs in various sensors, sensing parts, and loads necessary for control in an electronic refrigerator, the abnormality of the refrigerator is immediately output by outputting through the front temperature display, .

Claims (10)

A method for self-diagnosis of an electronic refrigerator in which a status signal of an abnormality from a sensing means and a status signal from a load can be displayed when performing a self-diagnosis of the electronic refrigerator, wherein the refrigerator temperature control button and the freezer temperature control button are simultaneously A first step (S1) in which all the display lamps are turned on for one second after the self-diagnosis preparation step is carried out by pressing down for one second, a second step (S2) for setting each item mode for each display lamp, A third step S3 of performing a normal operation and a third step S3 if it is determined that an artificial button signal has not been input during the execution of the third step S3, (S5) in which all the display lamps are turned on and off for one second when the artificial button signal is detected as a result of the detection of the fourth step S4, Lt; / RTI > A sixth step S6 of performing ON / OFF operation three times, and a step S6 for detecting whether there is a failure during the execution of the sixth step S6. A seventh step S7 of performing detection of the next item, and a seventh step S7 in which if there is a failure content of the first item as a result of the detection, the eighth step S8 (Step S9) of detecting the contents of the failure of the next item, detecting whether or not there is a corresponding failure as a result of the detection of the ninth step (S9), and if there is a corresponding failure, S8). If it is determined in step S10 that there is no fault, it is detected whether or not the detection of all items is completed. If the detection is not completed, the tenth step (S10) S9), and the detection of all items as a result of the detection of the eleventh step (S11) If fault information is expired without self-diagnosis method of an electronic refrigerator, it characterized in that a buzzer sound is generated and also in addition comprising a first step 12 (S12) is returned to the previous setting. The method of claim 1, wherein the indicator of the freezing compartment temperature indicating lamp of the display lamp indicates an abnormality of the freezing compartment sensor. The method of claim 1, wherein the lamp of the freezing compartment temperature indicating lamp of the display lamp indicates an abnormality of the freezing compartment sensor. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the middle stage lamp of the freezer room temperature indicator lamp of the display lamp indicates an abnormality of the freezer sensor. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the middle-stage lamp of the freezing room temperature indicating lamp of the display lamp indicates an abnormality of the freezing room sensor. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the lamp in the strong stage of the freezer room temperature indicating lamp of the display lamp indicates an abnormality of the COMPOR part. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the indicator of the refrigerator compartment temperature indicating lamp of the display lamp indicates an abnormality of the EVA-FAN unit. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the indicator of the refrigerator compartment temperature indicating lamp of the display lamp indicates an abnormality of the defrost system. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the middle stage lamp of the refrigerating room temperature indicating lamp among the display lamps indicates abnormality of the bimetal. The self-diagnosis method of an electronic refrigerator according to claim 1, wherein the middle-stage lamp of the refrigerating room temperature indicating lamp among the display lamps indicates an abnormality of the vibration damper.