KR100386495B1 - Method and device for controlling operation of refrigerator - Google Patents

Abstract

PURPOSE: A method and a device for controlling operation of a refrigerator are provided to prevent food from spoiling and reduce waste of electric power by installing switches to the doors of a chilling chamber and a freezing chamber and deciding a user's use pattern through calculation of the opening frequency of the doors. CONSTITUTION: A method for controlling operation of a refrigerator comprises steps of sensing the opening of doors for predetermined time and storing the pattern as data; sensing the room temperature of the refrigerator and the temperature of a defrosting sensor; sensing the opening of the doors during the time same as the predetermined time of the first step; setting up a new notch value higher than a set notch value if the opening of the doors is not sensed; and setting up the new notch value lower than the set notch value if the opening of the doors is sensed and the opening of the doors is periodic.

Description

Operation control method and apparatus of refrigerator

The present invention relates to an operation control apparatus of a refrigerator, and in particular, when the user's usage pattern is learned from CPI, when the user's frequency of use is low, the operation rate is controlled to be lower than usual to prevent food freezing and the power consumption accordingly. The present invention relates to an operation control method and apparatus for a refrigerator.

1 is a configuration diagram of an operation control apparatus of a conventional refrigerator, and as shown therein, a sensor unit including a refrigerating sensor (S1), a defrost sensor (S2), a freezing sensor (S3), and a notch (NOTCH) that is a temperature controller of a freezer compartment. (1), a CPI (2) for outputting control signals (cs1, cs2, cs3) from the detection result of the sensor unit (1) according to a preset program, and a plurality of buffers (BUF1) (BUF2) (BUF3). And a buffer unit 3 for converting the level of the control signals cs1, cs2, cs3 of the CPI 2, and each of the buffers BUF1, BUF2, BUF3, and the like. Compressor 41 and fan operated by receiving power AC from the control signals cs1, cs2, cs3 converted by the buffer unit 3 including relays RY1, RY2, and RY3 connected thereto. It consists of a drive part 4 consisting of a motor 42 and a defrost heater 43. Unexplained symbols R1.R2 and R3 are divided voltage resistance and R4 is current limiting resistance.

The operation of the operation control apparatus of the conventional refrigerator configured as described above is as follows.

When the power supply AC is applied, the CPI 2 reads the notch set value of the sensor unit 1, that is, the notch set value according to the temperature control of the temperature controller installed in the freezer compartment. After setting the control signal (cs1, cs2) of the high state and outputs the control signal (cs1) (cs2) is converted to a low state in the buffer (BUF1) (BUF2) of the buffer unit 3 and accordingly drive unit ( The input power supply Vcc of 4) flows through the coils of the relays RY1 and RY2, and the switches of the relays RY1 and RY2 are short-circuited , whereby the power supply AC is connected to the compressor 41 and the fan motor 42. ), The compressor 41 and the fan motor 42 are operated.

Thereafter, the CPI 2 senses the temperature inside the refrigerator by the refrigerating sensor S1 or the freezing sensor S3 of the sensor unit 1 and when the notch set value reaches the preset stop value of the compressor 41. The control signals cs1 and cs2 are output in a low state, and thus the operations of the compressor 41 and the fan motor 42 are stopped.

On the other hand, when the detection value of the refrigerating sensor (S1) or the freezing sensor (S3) reaches a predetermined operation value of the compressor 41, the CPI 2 again outputs a control signal (cs1) (cs2) to a high state The compressor 41 and the fan motor 42 are operated.

The temperature in the high according to the above operation is repeated is controlled constant, if the operation rate of the compressor 41 reaches the predetermined time ssipiyu (2) outputs a control signal (cs3) to a high state, yiettara probe (4 The defrost heater 43 is driven to remove the frost attached to the evaporator (not shown), and the defrost sensor S2 of the sensor unit 1 detects the ambient temperature of the evaporator and the ambient temperature reaches a predetermined temperature. When the defrost is completed, the defrost heater 43 is turned off.

In the conventional apparatus operating as described above, when the user sets the notch (NOTCH) as the user adjusts the temperature of the temperature controller of the freezer compartment, the frequency of use of the user, that is, the number of times of opening and closing the door of the refrigerator, is controlled constantly.

Therefore, when the frequency of use is high, food is easily damaged, on the contrary, when the frequency of use is low, the food is not only freezing, but the operation of the compressor is relatively excessive, thereby causing unnecessary power consumption.

Therefore, the present invention is installed in the refrigerating compartment and the freezer compartment door to detect the opening, respectively, calculate the number of openings according to the predetermined time to determine the user's use pattern, the user stops the operation of the compressor if it is determined that frequently used If it is determined that the point is low and, on the contrary, it is not used by the user, the operation stop point of the compressor is set high so that food is not spoiled and power consumption can be reduced.

1 is a block diagram of an operation control apparatus of a conventional refrigerator.

2 is a block diagram of an operation control apparatus of the present invention refrigerator.

3 is an operation flowchart for performing an operation control method of the refrigerator according to the present invention;

4 is a view showing a pattern in which the operating point and the stop point of the compressor 41 changes when the notch value changes according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: sensor unit 2: CPI

3: buffer part 4: driving part

5: open / close detection unit S1: refrigeration sensor

S2: Defrost sensor S3: Refrigeration sensor

BUF1 to BUF5: Buffer 41: Compressor

42: fan motor 43: defrost heater

RY1 to RV3: relays SW1 and SW2; 1st, 2nd switch

PC1, PC2: Photocoupler

The operation control method of the refrigerator of the present invention for achieving the above object, the first step of detecting the door opening of the refrigerator for a predetermined time and storing the pattern as data, and after the first step of the temperature and the defrost sensor of the refrigerator A second step of sensing a temperature; a third step of detecting whether a door is open for a time equal to a predetermined time of the first step; and if a door opening is not detected in the third step, a new notch value is set to a long set notch value. A fourth step of setting higher and a fifth step of setting a new notch value lower than the preset notch value when the door opening is detected in the third step and the door opening is periodic. Apparatus for achieving the operation control method of the refrigerator according to the present invention made as described above is a notch (S1), defrost sensor (S2), freezing sensor (S3) and the temperature controller of the freezer as shown in FIG. A sensor unit 1 consisting of NOTCH; A buffer unit 3 composed of five buffers BUF1 to BUF5 for converting and outputting a level of a signal input to each of the buffers BUF1 to BUF5; A first photocoupler installed on the refrigerating compartment door and operating on the opening and closing of the refrigerating compartment door and electrically insulating a signal according to the operation of the first switch SW1 to the CPI 2. PC1), the second switch (SW2) installed in the freezer door to operate according to the opening and closing of the freezer door, and electrically insulates the signal according to the operation of the second switch (SW2) to transmit to the CPI (2) An opening / closing detection unit 5 including a second photo coupler PC2; The control unit (cs1) (cs2) (cs3) is a buffer unit according to a preset program from a signal transmitted through the detection value of the sensor unit 1 and the buffers BUF4 and BUF5 of the buffer unit 3. Output to the buffer (BUF1) (BUF2) (BUF3) of (3) and also detect the output of the opening and closing detection unit 5 for a predetermined time, and stores the pattern as data and then of the opening and closing detection unit ( 5 ) CPI 2 for changing the notch set value in accordance with the output; Control signals cs1 converted in the buffer unit 3, including relays RY1, RY2 and RY3 connected to the respective buffers BUF1, BUF2 and BUF3 of the buffer unit 3 ( cs2) (cs3) is composed of a drive unit (4) consisting of a compressor 41, a fan motor 42 and a defrost heater (43) operating by receiving a power source (AC), the reference numerals R1, R2, R3 Is the voltage divider and R4 is the current limiting resistor.

The operation of the present invention configured as described above will be described with reference to FIG. 3.

When the power supply AC is applied, the CPI 2 reads the notch set value of the sensor unit 1, that is, the notch set value according to the temperature control of the temperature controller installed in the freezer compartment. After setting the control signal (cs1) (cs2) and outputs accordingly the power source (AC) is supplied to the compressor 41 and the fan motor 42, the compressor 41 and the fan motor 42 is operated.

On the other hand, when the user opens and closes the freezer compartment or the refrigerating compartment door during the operation of the refrigerator as described above, the first switch SW1 or the second switch SW2 of the open / close detection unit 5 operates and the corresponding signal is the first photocoupler ( It is electrically insulated through the PC1) or the second photocoupler PC2, and is input to the input terminals 11 and 12 of the CUP 2 through the buffer BUF4 or the buffer BUF5 of the buffer unit 3. The CPE 2 counts the input signal for a predetermined time and stores the pattern in the internal memory so that the user learns and stores the pattern using the refrigerator. 1) The internal temperature detected by the refrigeration sensor (S1) or the freezing sensor (S3) is input.

Next, the CPI 2 checks whether the user opens or closes the door for a predetermined time shorter than the predetermined time. That is, it is checked whether the first switch SW1 or the second switch SW2 of the open / close detection unit 5 is operated.

If there is no operation of the first switch SW1 or the second switch SW2 of the open / close detection unit 5, it is determined that the user does not open or close the door, and thereafter, it is determined whether the door is opened periodically for the predetermined time. If not, return to the initial state and if not, set the new value higher than the preset notch.

In addition, if there is an operation of the first switch SW1 or the second switch SW2 of the opening / closing detection unit 5, it is determined that the user has opened and closed the door, and whether there is a door opening periodically for the predetermined time. If it is judged, if not, it returns to the initial state and if it is reversed, it is determined that the user frequently opens and closes the door, and sets a new notch value that is lower than the preset notch value.

After the notch value is changed as described above, the CPI 2 senses the internal temperature of the refrigerator by the refrigerating sensor S1 or the freezing sensor S3 of the sensor unit 1, and the newly set notch value is preset compressor 41. When the stop value is reached, the control signals cs1 and cs2 are output in a low state, and thus the operations of the compressor 41 and the fan motor 42 are stopped.

On the other hand, when the detection value of the refrigerating sensor (S1) or the freezing sensor (S3) reaches the predetermined operation value of the compressor 41, the CPI 2 again outputs a control signal (cs1) (cs2) in a high state The compressor 41 and the fan motor 42 are operated.

4 is a view showing a pattern in which the operating point and the stop point of the compressor 41 changes when the notch value changes according to the present invention.

As described above, in the present invention, when the door is opened periodically, it is determined that the time is frequently used by the user, and the stop point of the compressor is set low to increase the compressor operation rate, thereby preventing food from being damaged. By reducing the operation rate of the unnecessary power consumption can be saved.

Claims (2)

A first step of detecting the door opening of the refrigerator for a predetermined time and storing the pattern as data; a second step of sensing the temperature in the refrigerator and the temperature of the defrost sensor after performing the first step; A third step of detecting whether there is a door open for the same time as a predetermined time, a fourth step of setting a new notch value higher than a preset notch value if the door open is not detected in the third step, and in the third step And a fifth step of setting a new notch value lower than a preset notch value when the door opening is detected and the door opening is periodically performed. A sensor unit for sensing the temperature of the refrigerator compartment and the temperature of the defrost sensor: a first sensing means for detecting the opening and closing of the refrigerator compartment door of the refrigerator and outputting a signal according to the first detection means and for outputting the corresponding signal An opening / closing detection unit comprising two sensing means: receiving the output of the sensor unit and outputting a control signal to a buffer according to a preset notch value, and detecting the output of the opening / closing detection unit for a predetermined time and storing the pattern as data. CPI after changing the notch set value according to the output of the opening and closing detection unit; And a driving unit including a compressor, a fan motor, and a defrost heater, which is operated by receiving power by the control signal of the CPI oil.